Official edition
PUBLISHING STANDARDS M o t k ■ a
UDC 621.914.6:006.354 Group G21
STATE STANDARD OF THE UNION OF THE SSR
WORM FINISHING CUTTERS FOR SPLINED SHAFTS WITH EVOLVENT PROFILE
Finishing involute spline hobs. Specifications
okp ze i8i6
Introduction date 01.01.82
This standard applies to worm solid finishing cutters for processing gear (splined) shafts with an involute profile in accordance with GOST 6033-80 and GOST 6033-51.
The requirements of the standard in Sec. 1, 2, 4, 5 and 3.2 are mandatory, other requirements of this standard are recommended.
1. TYPES and BASIC DIMENSIONS
1.1. Mills must produce types:
1 - for processing shafts with a flat cavity;
2 - for processing shafts with a rounded cavity.
1.2. The cutters must be made with right-handed helical grooves with left-hand direction of accuracy classes A, B and C.
1.3. The main dimensions of solid cutters must correspond to those indicated in the drawing and in table. one.
Example symbol cutters with modulus /Ppo=5.0 mm, accuracy class A, type 1:
Official publication Reprint prohibited
© Standards Publishing, 1980 (6) Standards Publishing, 1994 Reissued with changes
% GOST ttS7-S#
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mm Table! |
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Notes:
1. Cutters on the 1st row of modules are preferred for use.
2. The size in brackets is not recommended.
3 For cutters manufactured in a centralized manner - rake angle in normal section 0 °
It is allowed to produce the keyway of cutters with a tolerance field for the width L - B12, for the height C1 - H14.
1.5. The calculated dimensions of the cutters are indicated in Appendix 1.
1.6. The dimensions of the tooth profile of the cutters are indicated in Appendix 2.
1.7. The purpose of the cutters is indicated in Appendix 3.
2. TECHNICAL REQUIREMENTS
2.1. Cutters must be manufactured in accordance with the requirements of this standard according to working drawings approved in the prescribed manner.
2.2. Milling cutters must be made of high-speed steel according to GOST 19265. It is allowed to manufacture milling cutters from other grades of high-speed steel, which ensure the resistance of cutters in accordance with the requirements of this standard.
2.3. The hardness of cutters made of high-speed steel is 63... 66 HRC,. The hardness of cutters made of high-speed steel with vanadium content of 3% or more, cobalt of 5% or more is 64 ... 66 HRC 3 .
2.2, 2.3. (Revised edition, Rev. No. 1).
2.4. On the surface of the cutter there should be no cracks, hairline, shells, corrosion. Appearance cutters manufactured for export must comply with the control sample agreed with the foreign trade organization.
2.5. On the working surfaces of the teeth, on the seating surface of the hole and on the end surfaces there should be no nicks, burrs, crushing marks, arson.
2.5a. The ground part of the cutters, which ensures the required profile accuracy, must be at least 1/2 of the tooth length along the outer diameter for cutters of modules up to 4 mm and 1/3 of the tooth length for cutters of modules over 4 mm.
The criterion for blunting cutters is wear on the back surface of the cutter teeth. Wear should not exceed the values specified in Table. 2a.
(Introduced additionally, Rev. No. 1).
(Revised edition, Rev. No. 2).
2.6. The parameters of the surface roughness of cutters according to GOST 2789 should be no more than, microns:
bore for accuracy class
Sun. . ... . . Ra 0.63
tooth rake for accuracy class
B, S. .... . , Rz 6.3
end face and cylindrical shoulder surface for accuracy classes
A (modules from 0.5 to 3.5) *. . . . Ra 0.32
A (modules sv 3.5 to 10) Ra 0.63
FROM. . . . Ra 1.25
a back surface of teeths, on lateral faces, on top for accuracy classes -
A (modules from 0.5 to 3.5) ...... Rz 1.6
A (modules sv 3.5 to 10) ... Rz 3.2
AT. . . . ...Rz 2.2
FROM. . ...... Rz 6.3
* At the request of the consumer, the surface roughness of the ends of the beads Ra ^.0.63 microns is allowed
2.7. Incomplete turns must be blunted so that the thickness of the upper part of the tooth along its entire length is not less than 0.5 module.
(Revised edition, Rev. No. 1).
2.8. Unspecified limit deviations of dimensions: H16, N6,
T. 2.
2.9. Tolerances and limit deviations of the checked parameters of the cutters should not exceed the values \u200b\u200bspecified in Table. 2.
2 10. The average and 95% life of cutters should be no less than those specified in Table. 2a, subject to the conditions of "testing" given in Sec. four.
(Introduced additionally, Rev. No. 1).
(Revised edition, Rev. No. 2).
1. Bore diameter deviation
2. Radial runout of the cylindrical surface of the beads
- THEM
|
goet "37-80 C.S |
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|
Name and designation of the checked parameters 3. Tornov** tusks" of the surfaces of the shoulders 4. Radial runout on outer diameter |
Continuation of the table. 2
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Continuation of the table. L
post at the working height of the tooth
At
grooves within a turn
|
Designation of tolerances and limit deviations |
Accuracy class |
Module, mm |
||||
|
St. 2 to. 3.5 |
St. 3.5 to 6 |
St. 6 to No. |
||||
|
Tolerances and limit deviations, microns |
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Engineering. GOST 6637-80: Finishing worm cutters for splined shafts with involute profile. Specifications. OKS: Mechanical engineering, Cutting tools. GOSTs. Finishing worm cutters for splined shafts with.... class=text>
GOST 6637-80
Finishing worm cutters for splined shafts with involute profile. Specifications
GOST 6637-80
Group G23
STATE STANDARD OF THE UNION OF THE SSR
WORM FINISHING CUTTERS FOR SLOT
SHAFTS WITH EVOLVENT PROFILE
Specifications
Finishing involute spline hobs.Specifications
Introduction date 1982-01-01
INFORMATION DATA
1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry of the USSR
DEVELOPERS
A.N. Shevchenko, I.G. Lobanova
2. APPROVED AND INTRODUCED BY Decree of the State Committee of the USSR for Standards dated 14.05.80 N 2105
3. Term of verification - 1992
4. REPLACE GOST 6637-53
5. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS
Item number, applications |
|
GOST 8.051-81 | |
GOST 659-89 | |
GOST 1050-88 | |
GOST 2789-73 | |
GOST 4543-71 | |
GOST 6033-80 | Introduction, appendix 3 |
GOST 6033-51 | |
GOST 9013-59 | |
GOST 9378-93 | |
GOST 9472-90 | |
GOST 17336-80 | |
GOST 18088-83 | |
GOST 19265-73 | |
GOST 20799-88 | |
GOST 23677-79 | |
GOST 23726-79 | |
GOST 25706-83 |
6. Decree of the State Standard of the USSR N 1735 dated 11/13/91 removed the limitation of the validity period
7. REPUBLICATION (May 1996) with Amendments No. 1, 2, approved in March 1987, November 1991 (IUS 6-87, 2-92)
This standard applies to worm solid finishing cutters for processing gear (splined) shafts with an involute profile in accordance with GOST 6033-80 and GOST 6033-51.
The requirements of the standard in parts of sections 1, 2, 4, 5 and clause 3.2 are mandatory, other requirements of this standard are recommended.
1. TYPES AND BASIC DIMENSIONS
1. TYPES AND BASIC DIMENSIONS
1.1. Mills should be made of types:
1 - for processing shafts with a flat cavity;
2 - for processing shafts with a rounded cavity.
1.2. Cutters should be made right-handed with left-hand helical grooves of accuracy classes A, B and C.
1.3. The main dimensions of solid cutters must correspond to those indicated in the drawing and in Table 1.
Table 1
Cutter type 1 | Cutter type 2 | Module | Number of teeth |
|||||||||
Designation | At- | Designation | At- | Previous off | ||||||||
Notes:
1. Cutters on the 1st row of modules are preferred for use.
2. The size in brackets is not recommended.
3. For cutters manufactured in a centralized manner, the rake angle in normal section is 0°.
An example of a symbol for a cutter with a modulus = 5.0 mm, accuracy class A, type 1:
Cutter 2520-0685 5.0 A GOST 6637-80
1.4. Keyway - according to GOST 9472.
It is allowed to produce a keyway of cutters with a tolerance field for width - B12, for height - H14.
1.5. The calculated dimensions of the cutters are indicated in Appendix 1.
1.6. The dimensions of the tooth profile of the cutters are indicated in Appendix 2.
1.7. The purpose of the cutters is indicated in Appendix 3.
2. TECHNICAL REQUIREMENTS
2.1. Cutters should be manufactured in accordance with the requirements of this standard according to working drawings approved in the prescribed manner.
2.2. Cutters should be made of high-speed steel according to GOST 19265. It is allowed to manufacture cutters from other grades of high-speed steel that ensure the durability of the cutters in accordance with the requirements of this standard.
2.3. The hardness of cutters made of high-speed steel is 63...66 HRC. The hardness of cutters made of high-speed steel with vanadium content of 3% or more, cobalt of 5% or more is 64...66 HRC.
2.2, 2.3. (Changed edition, Rev. N 1).
2.4. On the surface of the cutter there should be no cracks, hairline, shells, corrosion. The appearance of a cutter manufactured for export must correspond to a control sample agreed with a foreign trade organization.
2.5. On the working surfaces of the teeth, on the seating surface of the hole and on the end surfaces there should be no nicks, burrs, crushing marks, arson.
2.5a. The ground part of the cutters, which ensures the required profile accuracy, must be at least 1/2 of the tooth length along the outer diameter for cutters of modules up to 4 mm and 1/3 of the tooth length for cutters of over 4 mm modules. 4 mm.
The criterion for blunting cutters is wear on the back surface of the cutter teeth. Wear should not exceed the values specified in Table 2a.
Table 2a
Module, mm | Durability period, min | Permissible wear, mm |
|
average | |||
0.5 to 0.8 | |||
" 8,0 " 10,0 | |||
2.6. The parameters of the surface roughness of cutters according to GOST 2789 should be no more than, microns:
- mounting hole for accuracy classes:
Tooth rake for accuracy classes:
End surface and cylindrical shoulder surface for accuracy classes:
A (modules from 0.5 to 3.5)* | ||||
A (modules over 3.5 to 10) | ||||
________________
* At the request of the consumer, the surface roughness of the ends of the beads is 0.63 microns.
- back surface of the teeth, on the sides, on the top for accuracy classes:
A (modules from 0.5 to 3.5) | ||||
A (modules over 3.5 to 10) | ||||
2.7. Incomplete turns must be blunted so that the thickness of the upper part of the tooth along its entire length is not less than 0.5 module.
(Changed edition, Rev. N 1).
2.8. Unspecified limit deviations of dimensions: H16, h16,.
2.9. Tolerances and limit deviations of the checked parameters of cutters should not exceed the values specified in Table 2.
2.10. The average and 95% life of cutters must not be less than those specified in Table 2a, subject to the test conditions given in Section 4.
(Introduced additionally, Rev. N 1).
(Changed edition, Rev. N 2).
table 2
Module, mm |
|||||||
Name and designation of the checked parameters | Designation | Accuracy class | St. 1 to 2 | St. 2 to 3.5 | St. 3.5 to 6 | St. 6 |
|
Tolerances and prev. off, µm |
|||||||
1. Bore diameter deviation | BUT | ||||||
2. Radial runout of the cylindrical surface of the beads | |||||||
3. Face runout of the surfaces of the beads | |||||||
4. Radial runout on outer diameter | |||||||
5. Deviation from straightness and inclination of the front surface at the working height of the tooth | |||||||
6. The largest difference between adjacent circumferential pitches of flutes within a revolution | |||||||
7. The accumulated error of the circumferential pitch of the flutes | |||||||
The largest difference in deviations of the actual circumferential steps from the nominal, measured along the arc of a circle close to the dividing one on one revolution | |||||||
8. Deviation of the direction of the chip grooves per 100 mm of the length of the working part of the cutter | |||||||
9. Tooth profile deviations | |||||||
10. Tooth thickness deviation minus | |||||||
11. Deviation of the helix of the cutter from tooth to tooth | |||||||
12. Deviation of the helix of the cutter on one revolution | |||||||
13. Deviation of the helix of the cutter at three revolutions | |||||||
14. Limit pitch deviations (distance between adjacent tooth profiles of the same name) | |||||||
15. Cumulative step error over the length of any three neighboring steps | |||||||
Notes:
1. The maximum deviation of the landing hole must be maintained at 60% of the length of each landing belt. In the area of the keyway at the central angle, not exceeding 25% of the axis of symmetry in both directions, it is allowed to break out the hole for cutters with a longitudinal keyway.
2. To control cutters, two groups of checks are recommended:
1st group - , , , , , or
, , , , , ;
2nd group - , , , ; ; or
, , , , , .
Milling cutters of accuracy class A are certified according to the 1st group of checks; accuracy classes B, C - according to the 2nd group of checks (for cutters of class B, in agreement with the consumer, the 1st
test group).
2.11. The average and established periods of cutter life must be at least those specified in Table 2a, subject to the test conditions given in Section 4.
(Introduced additionally, Rev. N 1).
2.12. At the end of each cutter must be applied:
- trademark manufacturer;
- cutter designation (last 4 digits);
- module;
- profile angle;
- designation of the accuracy class;
- material grade (it is allowed to mark the letters HSS instead of the steel grade, for steel grades containing cobalt - HSS Co);
- the angle of elevation of the coil;
- helical groove pitch;
- year of issue.
2.13. By agreement with the consumer, a class A milling cutter must have a passport indicating deviations from the nominal dimensions.
2.14. Transport marking, marking of consumer packaging and packaging - according to GOST 18088.
2.12-2.14. (Introduced additionally, Rev. N 2).
3. ACCEPTANCE
3.1. Acceptance rules - according to GOST 23726.
3.2. Tests for the average durability period are carried out once every three years, for a 95% durability period - once every two years on at least three cutters.
(Changed edition, Rev. N 2).
4. TEST METHODS
4.1. Milling cutter tests should be carried out on gear-cutting machines that comply with the accuracy and rigidity standards established for them in accordance with GOST 659.
The cutters are tested on workpieces made of steel grade 45 according to GOST 1050 or steel grade 40X according to GOST 4543 with a hardness of 170 ... 207 HB.
As a cutting fluid, a 5% by weight solution of emulsol or industrial oil I-20A according to GOST 20799 is used.
Milling cutter tests should be carried out in the modes indicated in Table 3.
Table 3
Module, mm | Submission, mm/rev | Cutting speed, m/min |
||
for solid metal | on a cut tooth | for solid metal | on a cut tooth |
|
0.5 to 0.8 | ||||
0.8 to 3.5 | ||||
3.5 to 6.0 | ||||
6.0 to 8.0 | ||||
8.0 to 10.0 | ||||
Note. The cutting speed of cutters made of steel containing 3% or more vanadium or 5% or more cobalt should be 25% higher than the speed indicated in Table 3.
(Changed edition, Rev. N 1).
4.1a. Acceptance values of the average and established periods of cutter life must be at least those indicated in Table 4.
Tests for the average and 95% periods of resistance are carried out on cutters of two sizes in the range of modules from 1 to 8 mm.
Table 4
Module, mm | Acceptance values of durability periods, min |
|
middle | 95% |
|
0.5 to 0.8 | ||
" 8,0 " 10,0 | ||
(Introduced additionally, Rev. N 1, revised edition, Rev. N 2).
4.2. The performance of the cutters is checked for 10 minutes of machine time. After the test, the cutter shall be free of chipped and crumpled cutting edges, must retain its cutting properties and be suitable for further work.
(Changed edition, Rev. N 1).
4.3. The parameters of the cutters must be controlled by measuring instruments with a measurement error of not more than:
a) when measuring linear dimensions - the values \u200b\u200bspecified in GOST 8.051;
b) the parameters according to clause 2.9 (table 2, clauses 14, 15) are checked on instruments whose error does not exceed those specified in GOST 17336;
c) when controlling the shape and location of surfaces - no more than 25% of the tolerance value for the parameter being checked.
4.4. The control of cutters according to clause 2.3 must be carried out in accordance with GOST 9013 on devices of the TR type in accordance with GOST 23677.
4.5. Surface roughness (clause 2.6) is checked by comparison with roughness samples according to GOST 9378 or with exemplary tools, the surfaces of which have limit values for roughness parameters; comparison is carried out visually using a magnifying glass LP-1-4 according to GOST 25706.
(Changed edition, Rev. N 1).
5. TRANSPORT AND STORAGE
5.1. Transportation and storage of cutters - according to GOST 18088.
(Changed edition, Rev. N 2).
APPENDIX 1 (mandatory). CALCULATED DIMENSIONS OF MILLS
ATTACHMENT 1
Mandatory
Dimensions, mm
Module | Helical flute pitch |
||||
Note. Cutters with a helix angle of 5° or less can be made with straight axial grooves.
APPENDIX 2 (mandatory). PROFILE DIMENSIONS OF MILL TOOTHS IN NORMAL SECTION
APPENDIX 2
Mandatory
Damn.1. Type 1
Type 1
Damn.1
Table 1
Module | No more | No more |
|||||
Damn.2. Type 2
Type 2
Damn.2
table 2
Module | No more |
||||||
Notes:
1. Milling cutters with modulus from 1.0 to 2.5 mm can be made without nose radius.
2. The shape of the cavity in the area below the line determined by the nominal height of the tooth is arbitrary.
3. Dimensions and - theoretical.
Recommended purpose of milling cutters according to accuracy classes:
- accuracy class of cutters A - for splined shafts of the 8th degree of accuracy according to GOST 6033-80, for splined shafts with tolerance fields for the thickness of the shaft tooth SH, SC, SX according to GOST 6033-51;
- accuracy class of cutters B - for splined shafts of the 9th degree of accuracy according to GOST 6033-80; for splined shafts with shaft tooth thickness tolerance fields SN, SC, SX according to GOST 6033-51.
- milling accuracy class C - for splined shafts of the 10th and 11th degrees of accuracy according to GOST 6033-80; for splined shafts with shaft tooth thickness tolerance fields SSH according to GOST 6033-51.
(Introduced additionally, Rev. N 1, revised edition, Rev. N 2).
GOST 6637-80
Group G23
STATE STANDARD OF THE UNION OF THE SSR
WORM FINISHING CUTTERS FOR SLOT
SHAFTS WITH EVOLVENT PROFILE
Specifications
Finishing involute spline hobs.Specifications
Introduction date 1982-01-01
INFORMATION DATA
1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry of the USSR
DEVELOPERS
A.N. Shevchenko, I.G. Lobanova
2. APPROVED AND INTRODUCED BY Decree of the State Committee of the USSR for Standards dated 14.05.80 N 2105
3. Term of verification - 1992
4. REPLACE GOST 6637-53
5. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS
Item number, applications |
|
GOST 8.051-81 | |
GOST 659-89 | |
GOST 1050-88 | |
GOST 2789-73 | |
GOST 4543-71 | |
GOST 6033-80 | Introduction, appendix 3 |
GOST 6033-51 | |
GOST 9013-59 | |
GOST 9378-93 | |
GOST 9472-90 | |
GOST 17336-80 | |
GOST 18088-83 | |
GOST 19265-73 | |
GOST 20799-88 | |
GOST 23677-79 | |
GOST 23726-79 | |
GOST 25706-83 |
6. Decree of the State Standard of the USSR N 1735 dated 11/13/91 removed the limitation of the validity period
7. REPUBLICATION (May 1996) with Amendments No. 1, 2, approved in March 1987, November 1991 (IUS 6-87, 2-92)
This standard applies to worm solid finishing cutters for processing gear (splined) shafts with an involute profile in accordance with GOST 6033-80 and GOST 6033-51.
The requirements of the standard in parts of sections 1, 2, 4, 5 and clause 3.2 are mandatory, other requirements of this standard are recommended.
1. TYPES AND BASIC DIMENSIONS
1. TYPES AND BASIC DIMENSIONS
1.1. Mills should be made of types:
1 - for processing shafts with a flat cavity;
2 - for processing shafts with a rounded cavity.
1.2. Cutters should be made right-handed with left-hand helical grooves of accuracy classes A, B and C.
1.3. The main dimensions of solid cutters must correspond to those indicated in the drawing and in Table 1.
Table 1
Cutter type 1 | Cutter type 2 | Module | Number of teeth |
|||||||||
Designation | At- | Designation | At- | Previous off | ||||||||
Notes:
1. Cutters on the 1st row of modules are preferred for use.
2. The size in brackets is not recommended.
3. For cutters manufactured in a centralized manner, the rake angle in normal section is 0°.
An example of a symbol for a cutter with a modulus = 5.0 mm, accuracy class A, type 1:
Cutter 2520-0685 5.0 A GOST 6637-80
1.4. Keyway - according to GOST 9472.
It is allowed to produce a keyway of cutters with a tolerance field for width - B12, for height - H14.
1.5. The calculated dimensions of the cutters are indicated in Appendix 1.
1.6. The dimensions of the tooth profile of the cutters are indicated in Appendix 2.
1.7. The purpose of the cutters is indicated in Appendix 3.
2. TECHNICAL REQUIREMENTS
2.1. Cutters should be manufactured in accordance with the requirements of this standard according to working drawings approved in the prescribed manner.
2.2. Cutters should be made of high-speed steel according to GOST 19265. It is allowed to manufacture cutters from other grades of high-speed steel that ensure the durability of the cutters in accordance with the requirements of this standard.
2.3. The hardness of cutters made of high-speed steel is 63...66 HRC. The hardness of cutters made of high-speed steel with vanadium content of 3% or more, cobalt of 5% or more is 64...66 HRC.
2.2, 2.3. (Changed edition, Rev. N 1).
2.4. On the surface of the cutter there should be no cracks, hairline, shells, corrosion. The appearance of a cutter manufactured for export must correspond to a control sample agreed with a foreign trade organization.
2.5. On the working surfaces of the teeth, on the seating surface of the hole and on the end surfaces there should be no nicks, burrs, crushing marks, arson.
2.5a. The ground part of the cutters, which ensures the required profile accuracy, must be at least 1/2 of the tooth length along the outer diameter for cutters of modules up to 4 mm and 1/3 of the tooth length for cutters of over 4 mm modules. 4 mm.
The criterion for blunting cutters is wear on the back surface of the cutter teeth. Wear should not exceed the values specified in Table 2a.
Table 2a
Module, mm | Durability period, min | Permissible wear, mm |
|
average | |||
| 0.5 to 0.8 | |||
| " 0,8 " 8,0 | |||
| " 8,0 " 10,0 | |||
2.6. The parameters of the surface roughness of cutters according to GOST 2789 should be no more than, microns:
Mounting hole for accuracy classes:
Tooth rake for accuracy classes:
End surface and cylindrical shoulder surface for accuracy classes:
A (modules from 0.5 to 3.5)* | ||||
A (modules over 3.5 to 10) | ||||
________________
* At the request of the consumer, the surface roughness of the ends of the beads is 0.63 microns.
Tooth flanks, on flanks, on tip for accuracy classes:
A (modules from 0.5 to 3.5) | ||||
A (modules over 3.5 to 10) | ||||
2.7. Incomplete turns must be blunted so that the thickness of the upper part of the tooth along its entire length is not less than 0.5 module.
(Changed edition, Rev. N 1).
2.8. Unspecified limit deviations of dimensions: H16, h16,.
2.9. Tolerances and limit deviations of the checked parameters of cutters should not exceed the values specified in Table 2.
2.10. The average and 95% life of cutters must not be less than those specified in Table 2a, subject to the test conditions given in Section 4.
(Introduced additionally, Rev. N 1).
(Changed edition, Rev. N 2).
table 2
Module, mm |
|||||||
Name and designation of the checked parameters | Designation | Accuracy class | St. 1 to 2 | St. 2 to 3.5 | St. 3.5 to 6 | St. 6 |
|
Tolerances and prev. off, µm |
|||||||
1. Bore diameter deviation
| |||||||
2. Radial runout of the cylindrical surface of the beads | |||||||
| |||||||
3. Face runout of the surfaces of the beads | |||||||
| |||||||
4. Radial runout on outer diameter | |||||||
| |||||||
5. Deviation from straightness and inclination of the front surface at the working height of the tooth | |||||||
| |||||||
6. The largest difference between adjacent circumferential pitches of flutes within a revolution | |||||||
| |||||||
7. The accumulated error of the circumferential pitch of the flutes | |||||||
| |||||||
The largest difference in deviations of the actual circumferential steps from the nominal, measured along the arc of a circle close to the dividing one on one revolution | |||||||
8. Deviation of the direction of the chip grooves per 100 mm of the length of the working part of the cutter | |||||||
| |||||||
9. Tooth profile deviations | |||||||
| |||||||
10. Tooth thickness deviation minus | |||||||
| |||||||
11. Deviation of the helix of the cutter from tooth to tooth | |||||||
| |||||||
12. Deviation of the helix of the cutter on one revolution | |||||||
| |||||||
13. Deviation of the helix of the cutter at three revolutions | |||||||
| |||||||
14. Limit pitch deviations (distance between adjacent tooth profiles of the same name) | |||||||
| |||||||
15. Cumulative step error over the length of any three neighboring steps | |||||||
| |||||||
Notes:
1. The maximum deviation of the landing hole must be maintained at 60% of the length of each landing belt. In the area of the keyway at the central angle, not exceeding 25% of the axis of symmetry in both directions, it is allowed to break out the hole for cutters with a longitudinal keyway.
1st group - , , , , , or
2nd group - , , , ; ; or
Milling cutters of accuracy class A are certified according to the 1st group of checks; accuracy classes B, C - according to the 2nd group of checks (for cutters of class B, in agreement with the consumer, the 1st
test group).
2.11. The average and established periods of cutter life must be at least those specified in Table 2a, subject to the test conditions given in Section 4.
(Introduced additionally, Rev. N 1).
2.12. At the end of each cutter must be applied:
Trademark of the manufacturer;
Cutter designation (last 4 digits);
Profile angle;
Accuracy class designation;
Material grade (it is allowed to mark the letters HSS instead of the steel grade, for steel grades containing cobalt - HSS Co);
Helix angle;
Helix pitch;
Year of issue.
2.13. By agreement with the consumer, a class A milling cutter must have a passport indicating deviations from the nominal dimensions.
2.14. Transport marking, marking of consumer packaging and packaging - according to GOST 18088.
2.12-2.14. (Introduced additionally, Rev. N 2).
3. ACCEPTANCE
3.1. Acceptance rules - according to GOST 23726.
3.2. Tests for the average durability period are carried out once every three years, for a 95% durability period - once every two years on at least three cutters.
(Changed edition, Rev. N 2).
4. TEST METHODS
4.1. Milling cutter tests should be carried out on gear-cutting machines that comply with the accuracy and rigidity standards established for them in accordance with GOST 659.
The cutters are tested on workpieces made of steel grade 45 according to GOST 1050 or steel grade 40X according to GOST 4543 with a hardness of 170 ... 207 HB.
As a cutting fluid, a 5% by weight solution of emulsol or industrial oil I-20A according to GOST 20799 is used.
Milling cutter tests should be carried out in the modes indicated in Table 3.
Table 3
Module, mm | Submission, mm/rev | Cutting speed, m/min |
||
for solid metal | on a cut tooth | for solid metal | on a cut tooth |
|
0.5 to 0.8 | ||||
0.8 to 3.5 | ||||
3.5 to 6.0 | ||||
6.0 to 8.0 | ||||
8.0 to 10.0 | ||||
Note. The cutting speed of cutters made of steel containing 3% or more vanadium or 5% or more cobalt should be 25% higher than the speed indicated in Table 3.
(Changed edition, Rev. N 1).
4.1a. Acceptance values of the average and established periods of cutter life must be at least those indicated in Table 4.
Tests for the average and 95% periods of resistance are carried out on cutters of two sizes in the range of modules from 1 to 8 mm.
Table 4
Module, mm | Acceptance values of durability periods, min |
|
middle | 95% |
|
0.5 to 0.8 | ||
" 8,0 " 10,0 | ||
(Introduced additionally, Rev. N 1, revised edition, Rev. N 2).
4.2. The performance of the cutters is checked for 10 minutes of machine time. After the test, the milling cutter must not have chipped and crumpled cutting edges, must retain its cutting properties and be suitable for further work.
(Changed edition, Rev. N 1).
4.3. The parameters of the cutters must be controlled by measuring instruments with a measurement error of not more than:
a) when measuring linear dimensions - the values \u200b\u200bspecified in GOST 8.051;
b) the parameters according to clause 2.9 (table 2, clauses 14, 15) are checked on instruments whose error does not exceed those specified in GOST 17336;
c) when controlling the shape and location of surfaces - no more than 25% of the tolerance value for the parameter being checked.
4.4. The control of cutters according to clause 2.3 must be carried out in accordance with GOST 9013 on devices of the TR type in accordance with GOST 23677.
4.5. Surface roughness (clause 2.6) is checked by comparison with roughness samples according to GOST 9378 or with exemplary tools, the surfaces of which have limit values for roughness parameters; comparison is carried out visually using a magnifying glass LP-1-4 according to GOST 25706.
(Changed edition, Rev. N 1).
5. TRANSPORT AND STORAGE
5.1. Transportation and storage of cutters - according to GOST 18088.
(Changed edition, Rev. N 2).
APPENDIX 1 (mandatory). CALCULATED DIMENSIONS OF MILLS
ATTACHMENT 1
Mandatory
Dimensions, mm
Module | Helical flute pitch |
||||
STATE STANDARD
UNION SSR
TECHNICAL CONDITIONS
GOST 6637-80
Official edition
PUBLISHING HOUSE OF STANDARDS Moscow
UDC 621.914.6:006.354 Group G2X
STATE STANDARD OF THE UNION OF THE SSR
WORM FINISHING CUTTERS FOR SPLINED SHAFTS WITH EVOLVENT PROFILE
Specifications
Finishing involute spline hobs. Specifications
Introduction date 01.01.82
This standard applies to worm gear finishing cutters for processing gear (splined) shafts with an involute profile in accordance with GOST 6033-80 and GOST 6033-51.
The requirements of the standard in Sec. 1, 2, 4, 5 and 3.2 are mandatory, other requirements of this standard are recommended.
1. TYPES AND BASIC DIMENSIONS
1.1. Mills must produce types:
1 - for processing shafts with a flat cavity;
2 - for processing shafts with a rounded cavity.
1.2. The cutters must be made with right-handed helical grooves with left-hand direction of accuracy classes A, B and C.
1.3. The main dimensions of the cutters must correspond to those indicated in the drawing and in table. one.
An example of a symbol for a cutter with a module /Ppo=5.0 mm, accuracy class A, type 1:
Cutter 2520-0685 5.0 A GOST 6637-80
Official publication Reprint prohibited
© Standards Publishing, 1980 © Standards Publishing, 1994 Reissued with amendments
mm Table I
|
Type 1 cutter 1 Type 2 cutter |
Module m n0 | |||||||||||
Notes:
1. Cutters on the 1st row of modules are preferred for use.
2. The size in brackets is not recommended.
3 For cutters manufactured in a centralized manner - rake angle in normal section 0 °
1.4. Shponochny groove - in accordance with GOST 9472.
It is allowed to produce the keyway of cutters with a tolerance field for width B - B12, for height Ci - H14.
1.5. The calculated dimensions of the cutters are indicated in Appendix 1.
1.6. The dimensions of the tooth profile of the cutters are indicated in Appendix 2.
1.7. The purpose of the cutters is indicated in Appendix 3.
2. TECHNICAL REQUIREMENTS
2.1. Cutters must be manufactured in accordance with the requirements of this standard according to working drawings approved in the prescribed manner.
2.2. Cutters must be made of high speed steel in accordance with GOST 19265. It is allowed to manufacture cutters from other grades of high speed steel that ensure the durability of the cutters in accordance with the requirements of this standard.
2.3. The hardness of HSS cutters is 63... 66 HRC 3 . The hardness of cutters made of high-speed steel with vanadium content of 3% or more, cobalt of 5% or more is 64 ... 66 HRC 3 .
2.2, 2.3. (Revised edition, Rev. No. 1).
2.4. On the surface of the cutter there should be no cracks, hairline, shells, corrosion. The appearance of a cutter manufactured for export must correspond to a control sample agreed with a foreign trade organization.
2.5. On the working surfaces of the teeth, on the seating surface of the hole and on the end surfaces there should be no nicks, burrs, crushing marks, arson.
2.5a. The ground part of the cutters, which ensures the required profile accuracy, must be at least 1/2 of the tooth length along the outer diameter for cutters of modules up to 4 mm and 1/3 of the tooth length for cutters of modules over 4 mm.
The criterion for blunting cutters is wear on the back surface of the cutter teeth. Wear should not exceed the values specified in Table. 2a.
table 2
(Introduced additionally, Rev. No. 1).
(Revised edition, Rev. No. 2).
2.6. The parameters of the surface roughness of cutters according to GOST 2789 should be no more than, microns;
bore for accuracy class
|
rake face for class |
accuracy | ||
|
end face and cylindrical surface | |||
|
flanges for accuracy classes A (modules from 0.5 to 3.5)* | |||
|
A (modules sv 3.5 to 10) | |||
|
rear surface of the teeth, on the side |
sides, | ||
|
on top for accuracy classes* A (modules from 0.5 to 3.5) .... | |||
|
A (modules sv 3.5 to 10) | |||
* At the request of the consumer, the roughness of the surface of the ends of the beads Ra ^.0.63 microns is allowed
2.7. Incomplete turns must be blunted so that the thickness of the upper part of the tooth along its entire length is not less than 0.5 module.
(Revised edition, Rev. No. 1).
2.8. Unspecified limit deviations of dimensions: H16, N6, IT14
2.9. Tolerances and limit deviations of the checked parameters of the cutters should not exceed the values \u200b\u200bspecified in Table. 2.
2 10. Average and 95% cutter tool life should! not less than those specified in Table. 2a subject to the test conditions given in Sec. four.
(Introduced additionally, Rev. No. 1).
(Revised edition, Rev. No. 2).
1. Bore diameter deviation
2. Radial runout of the cylindrical surface of the collars
GOST *837-80 C.
3. End cutter runout of flange surfaces
4. Radial runout on outer diameter
|
Fineness class |
Module, mm |
||||||
|
St. 2 BEFORE. 3.5 | |||||||
|
Tolerances and limit* deviations, mKm |
|||||||
I. 6 GOST 6637-80
5. Deviation from straightness and inclination of the front surface at the working height of the tooth
grooves within a turn
GOST vv37-80 C.
Clicked and the designation of the parameters to be checked
7 Pah "Sh1 Miaya error of the circumferential pitch of the chip grooves
The largest difference in deviations of the actual circumferential steps from the nominal, measured along the arc of a circle close to the dividing one on one revolution_
8. Deviation of the direction of the chip grooves per 100 mm of the length of the working part of the cutter
M-1199 LEO! 9 *e
9 Tooth profile deviations
10 Tooth thickness deviation minus
|
Designation of tolerances and limit deviations |
Accuracy class | ||||||
|
St. in DO 10 |
|||||||
|
Tolerances and limit deviations, microns |
|||||||
GOST 6637-80 C
1 Deviation of the helix of the cutter from tooth to tooth
12 Cutter helix deflection per revolution
10 GOST 6637-80
13. Deviation of the helix of the cutter at three revolutions
GOST 6637-80 C II
Name and designation of the checked parameters
O L QJ X W
CJ 4> th O&H
14. Limit pitch deviations (distance between adjacent tooth profiles of the same name)
15. Cumulative step error over the length of any three neighboring steps
Module, mm
1* GOST 6637-80
Notes
1 The maximum deviation of the mounting hole must be maintained at 60% of the length of each landing belt. In the area of the keyway at the central angle, not exceeding 25% of the axis of symmetry in both directions, it is allowed to split the hole for milling cutters with a longitudinal keyway.
1- I group fd, f y , ft, fy , fda, fpto OR
Fpo, Tco, f x , F p p
2- group f d , f y , ft, F v ; f d a, f Pt0 or
Fpo, Tco, fx, ffo, fpxO, fPx30
Mills of accuracy class A are arrested according to the 1st group of checks, accuracy classes B, C - according to the 2nd group of checks (for cutters of classes B, in agreement with the consumer, the 1st group of checks can be used).
2.11. At the end of each cutter must be applied: the trademark of the manufacturer; cutter designation (last 4 digits);
module; profile angle;
designation of the accuracy class,
material grade (it is allowed to mark the letters HSS instead of the steel grade, for steel grades containing cobalt - HSS Co); turn angle; helical groove pitch; year of issue.
2.12. By agreement with the consumer, a class A milling cutter must have a passport indicating deviations from the nominal dimensions.
2.13. Transport marking, marking of consumer packaging and packaging - according to GOST 18088.
2.11-2.13. (Introduced additionally, Amendment No. 2).
3 ACCEPTANCE
3.1. Acceptance rules - according to GOST 23726.
3.2. Tests for the average durability period are carried out once every three years, for a 95% durability period - once every two years, at least on 3 cutters.
(Revised edition, Rev. No. 2).
4 TEST METHODS
4.1. Milling cutter tests should be carried out on gear-cutting machines that meet the established standards for precision-w and stiffness in accordance with GOST 659.
The cutters are tested on workpieces made of steel grade 45 according to GOST 1050 or steel grade 40X according to GOST 4543 with a hardness of 170 ... 207 HB.
As a cutting fluid, a 5% by weight emulsol solution or industrial oil I-20A according to GOST 20799 is used.
Milling cutter tests should be carried out in the modes indicated in Table. 3.
Table 3
Note. The cutting speed of cutters made of steel with a vanadium content of 3% or more or cobalt of 5% or more ^ should be 25% higher than the speed indicated in Table. 3.
(Revised edition, Rev. No. 1).
4.1a. The acceptance values of the average and established periods of cutter life must be at least those indicated in Table. four.
Tests for the average and 95% periods of resistance are carried out on cutters of two sizes in the range of modules from 1 to 8 mm.
Table 4
(Introduced additionally, Rev. No. 1). (Revised edition, Rev. No. 2).
4.2. The performance of the cutters is checked for 10 minutes of machine time. After the test, the cutter must not have chipped and crushed cutting edges, must retain its cutting properties and must be suitable for further work.
(Revised edition, Rev. No. 1).
4.3. The parameters of the cutters must be controlled by measuring instruments with a measurement error of not more than:
a) when measuring linear dimensions - the values \u200b\u200bspecified in GOST 8.051;
b) check the parameters according to clause 2.9 (14-15) on instruments whose error does not exceed those specified in GOST 17336;
c) when controlling the shape and location of surfaces - no more than 25% of the tolerance value for the parameter being checked.
4.4. The control of cutters according to clause 2.3 must be carried out in accordance with GOST 9013 on devices of the TR type in accordance with GOST 23677.
4.5. The surface roughness of clause 2.7 is checked by comparison with roughness samples according to GOST 9378 or with exemplary tools, the surfaces of which have limit values for roughness parameters, the comparison is carried out visually using a magnifying glass LP-1-4 x according to GOST 25706.
(Revised edition, Rev. No. 1).
5. TRANSPORT AND STORAGE
Transportation and storage - according to GOST 18088.
APPENDIX J Required*
CALCULATED DIMENSIONS OF MILLS
Dimensions, mm
|
Module m n0 |
Screw pitch chipboard |
||||
Note. Cutters with a helix angle of 5° or less can be machined with straight axial grooves.
APPENDIX 2 Mandatory
PROFILE DIMENSIONS OF MILL TOOTHS IN NORMAL SECTION
Table 1
|
Module W n0 | |||||||
table 2
|
Module m n0 Row | |||||||
Notes:
1 Milling cutters with a modulus of 1.0 to 2.5 mm can be made without a radius at the top.
2 The shape of the cavity in the area below the line determined by the nominal height of the tooth is arbitrary.
3. Dimensions h a0 and L p - theoretical.
accuracy class of milling cutters A- for splined shafts of the 8th degree of accuracy not GOST 6033-80, for splined shafts with shaft tooth thickness tolerance fields S 3 H, S 3 C, S 3 x according to GOST 6033-51;
cutter accuracy class B - for splined shafts of the 9th degree of accuracy according to GOST 6033-80; for splined shafts with shaft tooth thickness tolerance fields S Sa H, S 3a C, S 3 aX according to GOST 6033-51;
milling accuracy class C - for splined shafts of the 10th and 11th degrees of accuracy according to GOST 6033-80; for splined shafts with tolerances for shaft tooth thickness S 4 m according to GOST 6033-51.
(Introduced additionally, Amendment No. 1).
(Revised edition, Rev. No. 2).
INFORMATION DATA
1. DEVELOPED AND INTRODUCED by the Ministry of Machine Tool and Tool Industry of the USSR
DEVELOPERS
A. N. Shevchenko, I. G. Lobanova
2. APPROVED AND INTRODUCED BY Decree of the USSR State Committee for Standards No. 2105 dated 14.05.80
3. Term of verification - 1992
4. REPLACE GOST 6637-53
5. REFERENCE REGULATIONS
Item number, applications
GOST 8.051-81 GOST 659-89 GOST 1050-88 GOST 2789-73 GOST 4543-71 GOST 603 3-80 GOST 6033-51 GOST 9013-59 GOST 9 378-75 GOST 9472-90 GOST 17336-8 E GOST 18038- 83 GOST 19265-73 GOST 20799-88 GOST 23677-79 GOST 23726-79 GOST 25706-83
Introduction, appendix 3
6. Decree of the State Standard of the USSR No. 1735 dated 11/13/91 removed the limitation on the validity period
7. REPUBLICATION (April 1994) with Amendments No. 1, 2, approved in March 1987, November 1991 (IUS 6-87, 2-92)
Editor L. L. Vladimirok Technical editor O. N. Nikitina Proofreader N. I. Gavrishchuk
Rented in emb. 04/19/94. Signed in the oven 27.05.94. Uel. p, l. 3.40. Uel. kr.-ott. 1.49 _Uch.-ed. l. 1.20. Tyr. 594 akz. From 1358,
Order "Zna * Honor" Publishing house of standards, 107076, Moscow, Kolodezny lane. 14. Kaluga printing house of standards, st. Moscow, 256. Zach. 876
