CN204893104U - Asymmetric hobbing cutter - Google Patents
Asymmetric hobbing cutter Download PDFInfo
- Publication number
- CN204893104U CN204893104U CN201520394842.XU CN201520394842U CN204893104U CN 204893104 U CN204893104 U CN 204893104U CN 201520394842 U CN201520394842 U CN 201520394842U CN 204893104 U CN204893104 U CN 204893104U
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- CN
- China
- Prior art keywords
- flank profil
- side flank
- asymmetric
- straightway
- hobboing cutter
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- 238000000465 moulding Methods 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Abstract
The utility model discloses an asymmetric hobbing cutter, asymmetric hobbing cutter's axial profile comprises left side flank profil and right side flank profil, and the left side flank profil comprises straightway HI, IJ, KL and circular arc section JK, the right side flank profil comprises straightway PO, ON, ML and circular arc section NM. The utility model discloses a flank profil obtained different gradually burst at the seams originated spot diameter and tooth root curve about asymmetric hobbing cutter enabled to be processed the gear, and the idler and the planet wheel that are favorable to processing to participate in two -way meshing improve its intensity and reliability.
Description
Technical field
The utility model relates to a kind of hobboing cutter of machining gears.
Background technology
With the intermediate idler of two gears meshing or planetary gear while that gear train assembly being commonly used, because their teeth are by the effect of compound bending load, the most easily there is bending fractureing in the tooth root of this gear, such as specify in GB/T3480-1997 " Load Capacity of Involute. Cylindrical Gears computational methods " P56: for the gear (as breast wheel or planetary gear) by symmetrical compound bending, the bending fatigue limit value of gear should be multiplied by the bending fatigue limit that coefficient 0.7 can bear as this type gear.In addition, intermediate idler or different from two the respectively gears meshing of the planetary gear left and right flank of tooth, therefore intermediate idler or the planetary gear teeth left and right sides bending strength of bearing respectively is different, the starting point of the required flank of tooth involute of engagement is also different, and the starting point height of involute directly affects the tooth root circular arc radius of curvature of gear, and then affect the teeth bending strength of gear.Traditional method for designing does not consider the starting point difference of left and right flank of tooth involute, the profile of tooth of design is the left and right flank of tooth and tooth root full symmetric, see GB/T1356-2001 " universal machine and the basic rack tooth profile of heavy-duty machinery roller gear standard ", it is full symmetric flank profil; Therefore, identical in order to ensure left and right flank of tooth involute starting point, and there is enough involute lengths of action, make left and right flank profil tooth root curve curvature radius all very little, This further reduces the teeth bending strength of intermediate idler or planetary gear.
Summary of the invention
The purpose of this utility model is to provide a kind of processed gear left and right flank profil that can make and obtains different involute starting point diameters and the asymmetric hobboing cutter of tooth root curve.
The technical scheme realizing above-mentioned purpose is:
A kind of asymmetric hobboing cutter, the axial profile of described asymmetric hobboing cutter is made up of left side flank profil and right side flank profil, and described left side flank profil is made up of straightway HI, IJ, KL and arc section JK; Described right side flank profil is made up of straightway PO, ON, ML and arc section NM;
The angle of described straightway HI and axis I is the main cutting edge profile angle α of described left side flank profil; Described axis I for during tool setting by the round heart of processed gear compound graduation and perpendicular to the axis of asymmetric hobboing cutter reticule II; The angle of described straightway IJ and axis I is the non-moulding cutting edge profile angle β of left side flank profil
1, β
1< α, and β
1=7 ° ~ 14 °; Described arc section JK and straightway IJ, KL are tangential on a J and some K; Straightway KL is parallel to asymmetric hobboing cutter reticule II;
The straightway PO of described right side flank profil and the angle of axis I are α; The angle of described straightway ON and axis I is the non-moulding cutting edge profile angle β of right side flank profil
2, β
2< α, and β
2=7 ° ~ 14 °; Described arc section NM and straightway ON, ML are tangential on a N and some M; Straightway ML is parallel to asymmetric hobboing cutter reticule II;
Described left side flank profil has salient angle thickness H
1, described right side flank profil has salient angle thickness H
2, allow H
1≠ H
2;
The transverse tooth thickness of described asymmetric hobboing cutter axial profile in reticule II is S
n, the thickness of left side flank profil in reticule II is S
n1, the thickness S of right side flank profil in reticule II
n2, S
n=S
n1+ S
n2, allow S
n1≠ S
n2;
The radius of the arc section JK of described left side flank profil is R
1; The radius of the arc section NM of right side flank profil is R
2; 0 < R
1< R
2≤ R
max, wherein R
maxbe calculated as follows:
wherein h
afor described asymmetric hobboing cutter height of teeth top.
When adopting the utility model to process processed gear, form the involute section QS of flank profil QSG on the left of the processed gear of cutter section rolling cut at flank profil straightway HI place, described left side, on the left of straightway IJ, KL of described left side flank profil and the processed gear of cutter section rolling cut at arc section JK place, form the tooth root curve S G of flank profil QSG; Form the involute section UT of flank profil UTG on the right side of the processed gear of cutter section rolling cut at flank profil straightway PO place, described right side, on the right side of PO, ON, ML of described right side flank profil and the processed gear of cutter section rolling cut at arc section NM place, form the tooth root curve TG of flank profil UTG.Processed Gear Processing can be become the Non-completety symmetry gear that its left and right flank profil has the tooth root curve of different involute starting point diameters and different curvature radius by the utility model.
Accompanying drawing explanation
The embodiment provided below in conjunction with accompanying drawing is described in further detail the utility model.
Fig. 1 is the axial tooth profile figure of asymmetric hobboing cutter of the present utility model;
Fig. 2 is the left side flank profil figure in Fig. 1;
Fig. 3 is the right side flank profil figure in Fig. 1;
Fig. 4 is the schematic diagram of asymmetric hobboing cutter of the present utility model when processing processed gear.
Detailed description of the invention
As shown in Figure 1, 2, 3, the asymmetric hobboing cutter of one of the present utility model, the axial profile of described asymmetric hobboing cutter 3 is made up of left side flank profil 1 and right side flank profil 2, and described left side flank profil 1 is made up of straightway HI, IJ, KL and arc section JK; Described right side flank profil 2 is made up of straightway PO, ON, ML and arc section NM;
The angle of described straightway HI and axis I is the main cutting edge profile angle α of described left side flank profil 1; Described axis I for during tool setting by the round heart of processed gear compound graduation and perpendicular to the axis of asymmetric hobboing cutter 3 reticule II; The angle of described straightway IJ and axis I is the non-moulding cutting edge profile angle β of left side flank profil 1
1, β
1< α, and β
1=7 ° ~ 14 °; Described arc section JK and straightway IJ, KL are tangential on a J and some K; Straightway KL is parallel to asymmetric hobboing cutter reticule II;
The straightway PO of described right side flank profil 2 and the angle of axis I are α; The angle of described straightway ON and axis I is the non-moulding cutting edge profile angle β of right side flank profil 2
2, β
2< α, and β
2=7 ° ~ 14 °; Described arc section NM and straightway ON, ML are tangential on a N and some M; Straightway ML is parallel to asymmetric hobboing cutter reticule II;
Described left side flank profil 1 has salient angle thickness H
1, described right side flank profil 2 has salient angle thickness H
2, allow H
1≠ H
2;
The transverse tooth thickness of described asymmetric hobboing cutter 3 axial profile in reticule II is S
n, the thickness of left side flank profil 1 in reticule II is S
n1, the thickness S of right side flank profil 2 in reticule II
n2, S
n=S
n1+ S
n2, allow S
n1≠ S
n2;
The radius of the arc section JK of described left side flank profil 1 is R
1; The radius of the arc section NM of right side flank profil 2 is R
2; 0 < R
1< R
2≤ R
max, wherein R
maxbe calculated as follows:
wherein h
afor described asymmetric hobboing cutter 3 height of teeth top.
The basic pattern of asymmetric hobboing cutter 3 of the present utility model and other sizes except axial tooth profile can be determined see the basic pattern of " GB8062.1-87 pre-grinding hob basic pattern and size " and size.
As shown in Figure 4, when adopting the asymmetric hobboing cutter 3 of said method design to process processed gear 4, on the left of asymmetric hobboing cutter 3, flank profil 1 is processed on the left of processed gear 4 and is formed flank profil QSG, and on the right side of asymmetric hobboing cutter 3, flank profil 2 is processed on the right side of processed gear 4 and formed flank profil UTG simultaneously.After gear hobbing, on the left of processed gear 4, the involute starting point diameter of flank profil QSG is d
ff1be SG with tooth root curve, on the right side of processed gear 4, the involute starting point diameter of flank profil UTG is d
ff2be TG with tooth root curve, therefore processed gear about 4 flank profil can be made to obtain different involute starting point diameters and tooth root curve by the disposable processing of asymmetric hobboing cutter 3 of the present utility model, be very beneficial for idle pulley and the planetary gear of processing the two-way engagement of participation, improve its intensity and reliability.
The another kind of beneficial effect that the utility model brings is, when there being needs (when the left and right flank of tooth exists relatively big difference distortion after as processed gear heat treatment), left side flank profil 1 can be stayed mill amount q
1mill amount q is stayed with right side flank profil 2
2according to left and right gear separately unequal distortion measure unequal stock removal, be conducive to improving left and right flank of tooth hardened layer uniformity.
Claims (1)
1. an asymmetric hobboing cutter, is characterized in that:
The axial profile of a, described asymmetric hobboing cutter (3) is made up of left side flank profil (1) and right side flank profil (2), and described left side flank profil (1) is made up of straightway HI, IJ, KL and arc section JK; Described right side flank profil (2) is made up of straightway PO, ON, ML and arc section NM;
The angle of b, described straightway HI and axis I is the main cutting edge profile angle α in described left side flank profil (1); Described axis I for during tool setting by the round heart of processed gear compound graduation and perpendicular to the axis of asymmetric hobboing cutter (3) reticule II; The angle of described straightway IJ and axis I is the non-moulding cutting edge profile angle β in left side flank profil (1)
1, β
1< α, and β
1=7 ° ~ 14 °; Described arc section JK and straightway IJ, KL are tangential on a J and some K; Straightway KL is parallel to asymmetric hobboing cutter reticule II;
C, the straightway PO on described right side flank profil (2) and the angle of axis I are α; The angle of described straightway ON and axis I is the non-moulding cutting edge profile angle β on right side flank profil (2)
2, β
2< α, and β
2=7 ° ~ 14 °; Described arc section NM and straightway ON, ML are tangential on a N and some M; Straightway ML is parallel to asymmetric hobboing cutter reticule II;
D, described left side flank profil (1) have salient angle thickness H
1, described right side flank profil (2) has salient angle thickness H
2, allow H
1≠ H
2;
E, the transverse tooth thickness of described asymmetric hobboing cutter (3) axial profile in reticule II are S
n, the thickness of left side flank profil (1) in reticule II is S
n1, the thickness S of right side flank profil (2) in reticule II
n2, S
n=S
n1+ S
n2, allow S
n1≠ S
n2;
The radius of the arc section JK in f, described left side flank profil (1) is R
1; The radius of the arc section NM on right side flank profil (2) is R
2; 0 < R
1< R
2≤ R
max, wherein R
maxbe calculated as follows:
wherein h
afor described asymmetric hobboing cutter (3) height of teeth top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394842.XU CN204893104U (en) | 2015-06-08 | 2015-06-08 | Asymmetric hobbing cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394842.XU CN204893104U (en) | 2015-06-08 | 2015-06-08 | Asymmetric hobbing cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204893104U true CN204893104U (en) | 2015-12-23 |
Family
ID=54915316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520394842.XU Active CN204893104U (en) | 2015-06-08 | 2015-06-08 | Asymmetric hobbing cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204893104U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889505A (en) * | 2015-06-08 | 2015-09-09 | 南车戚墅堰机车车辆工艺研究所有限公司 | Asymmetrical hob and design method thereof |
| CN104889501A (en) * | 2015-06-08 | 2015-09-09 | 南车戚墅堰机车车辆工艺研究所有限公司 | Non-full-symmetry involute gear, gear cutting hob special for same, and machining method of non-full-symmetry involute gear |
| US20190047064A1 (en) * | 2016-11-08 | 2019-02-14 | Tianjin Deepfar Ocean Technology Co., LTD | Cutters For ROV Propeller Gear Modification |
| CN110064800A (en) * | 2019-04-26 | 2019-07-30 | 南京高速齿轮制造有限公司 | A kind of double Bezier gear with curved teeth hobboing cutters |
-
2015
- 2015-06-08 CN CN201520394842.XU patent/CN204893104U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889505A (en) * | 2015-06-08 | 2015-09-09 | 南车戚墅堰机车车辆工艺研究所有限公司 | Asymmetrical hob and design method thereof |
| CN104889501A (en) * | 2015-06-08 | 2015-09-09 | 南车戚墅堰机车车辆工艺研究所有限公司 | Non-full-symmetry involute gear, gear cutting hob special for same, and machining method of non-full-symmetry involute gear |
| CN104889501B (en) * | 2015-06-08 | 2017-04-12 | 南车戚墅堰机车车辆工艺研究所有限公司 | Non-full-symmetry involute gear, gear cutting hob special for same, and machining method of non-full-symmetry involute gear |
| US20190047064A1 (en) * | 2016-11-08 | 2019-02-14 | Tianjin Deepfar Ocean Technology Co., LTD | Cutters For ROV Propeller Gear Modification |
| CN110064800A (en) * | 2019-04-26 | 2019-07-30 | 南京高速齿轮制造有限公司 | A kind of double Bezier gear with curved teeth hobboing cutters |
| CN110064800B (en) * | 2019-04-26 | 2024-03-01 | 南京高速齿轮制造有限公司 | Double Bessel arc gear hob |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 258, No. Patentee after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Address before: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 258, No. Patentee before: CSR QISHUYAN INSTITUTE Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 213011 Wuyi Road, Jiangsu, Changzhou, No. 258 Patentee after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Address before: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 258, No. Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee after: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co.,Ltd. Country or region after: China Address before: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. Country or region before: China |