CN210715849U - Umbrella-shaped roller cam speed reducer - Google Patents
Umbrella-shaped roller cam speed reducer Download PDFInfo
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- CN210715849U CN210715849U CN201921580265.8U CN201921580265U CN210715849U CN 210715849 U CN210715849 U CN 210715849U CN 201921580265 U CN201921580265 U CN 201921580265U CN 210715849 U CN210715849 U CN 210715849U
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Abstract
The utility model provides an umbrella-shaped roller cam speed reducer, which consists of a primary cam mechanism, a wheel tower mechanism, a secondary turret mechanism and a case, wherein the wheel tower mechanism consists of the primary turret mechanism and the secondary cam mechanism, and the primary turret mechanism is connected with the secondary cam mechanism through a flat key; the primary cam mechanism drives the secondary turret mechanism to move sequentially through the primary turret mechanism and the secondary cam mechanism; the machine case is internally provided with a first through hole arranged along the left-right direction and two second through holes which are parallel and arranged along the front-back direction, the two second through holes respectively penetrate through the first through hole, a wheel tower mechanism is arranged in the first through hole, a primary cam mechanism and a secondary turret mechanism are respectively arranged in the two second through holes, the primary cam mechanism is an input end, and the secondary turret mechanism is an output end. The utility model has reasonable structure, and increases the structural strength of the camshaft; the processing difficulty of the cam tooth surface is reduced, and the requirement of processing precision is met.
Description
Technical Field
The utility model belongs to the technical field of industrial equipment, in particular to umbelliform roller cam speed reducer is applicable to industrial industries such as jack-up transportation, engineering machine tool, metallurgy, mine, petrochemical, building machinery, light industry weaving, medical instrument, car, boats and ships, weapon and aerospace, and the arm of high accuracy robot, the revolving stage of high accuracy lathe, the speed reducer and the graduated disk of high accuracy automation line are applied to the key.
Background
In a cam rotating mechanism of a speed reducer in the prior art, a cam is a toroidal worm with rectangular teeth (the tooth profile angle is 0), a plurality of uniformly-distributed rollers are arranged on an outer ring of a rotating disc, the rollers are in contact with tooth grooves of the rectangular teeth of the toroidal worm, and the toroidal worm pushes the rollers when rotating. The following technical defects exist in use: 1) the tooth root of the worm shaft is lack of materials, the stress is concentrated, and the strength is insufficient; 2) the addendum of the ring surface worm is lack of materials, and the wrap angle is too large, so that the processing is difficult; 3) the arrangement of the roller mounting holes interfere with each other; 4) the processing difficulty of the cam tooth surface is high, and the processing precision requirement cannot be met.
How to design an umbrella-shaped roller cam speed reducer, how to increase the structural strength of the camshaft and reduce the processing difficulty of the cam tooth surface becomes the problem which needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
In view of the above disadvantages of the prior art, the present invention provides an umbrella-shaped roller cam reducer for solving the problems of material shortage, stress concentration and insufficient strength of the cam shaft tooth root existing in the prior art; the addendum of the ring surface worm lacks materials, the wrap angle is too large, and the processing is difficult; the arrangement of the roller mounting holes interfere with each other; the processing difficulty of the cam tooth surface is large, and the processing precision requirement cannot be met.
In order to achieve the above object, the utility model provides an umbrella-shaped roller cam speed reducer, which comprises a case, wherein the case is internally provided with a first through hole arranged along the left-right direction and two second through holes arranged in parallel and along the front-back direction, the two second through holes respectively penetrate through the first through hole, a wheel tower mechanism is arranged in the first through hole, a primary cam mechanism and a secondary turret mechanism are respectively arranged in the two second through holes, the primary cam mechanism is an input end, and the secondary turret mechanism is an output end;
the wheel tower mechanism consists of a primary turret mechanism and a secondary cam mechanism, and the primary turret mechanism is connected with the secondary cam mechanism through a flat key; the primary cam mechanism drives the secondary turret mechanism to move sequentially through the primary turret mechanism and the secondary cam mechanism;
the primary turret mechanism comprises a primary turret; the two-stage cam mechanism comprises a first cam; the secondary turret mechanism comprises a secondary turret; the first-stage cam mechanism comprises a second cam, and one end of the second cam is provided with an input shaft hole;
a first circular table is arranged on the primary turret, a plurality of second rollers which are uniformly distributed around the circumference are arranged on the outer ring of the side surface of the first circular table, and any one of the second rollers is fixed on the primary turret through a first jackscrew which is vertical to the second roller;
the shaft of the second cam is at least provided with two first worm teeth with variable helical angles, and a tooth groove between the two first worm teeth is contacted with the second roller;
a second circular table is arranged on the secondary turret, a plurality of first rollers uniformly distributed around the circumference are arranged on the outer ring of the side surface of the second circular table, and any one of the first rollers is fixed on the secondary turret through a second jackscrew perpendicular to the first roller;
the shaft of the first cam is at least provided with two second worm teeth with variable helical angles, and a tooth groove between the two second worm teeth is in contact with the first roller;
by adopting the technical scheme: the roller contacts with the gear groove on the shaft of the cam, and the cam pushes the roller when rotating, so that the turret does clearance or continuous rotation.
In an embodiment of the present invention, the outer ring of the rear end of the second cam is connected to the chassis sequentially through the seventh bearing and the fourth seat plate, wherein the fourth seat plate adopts a blank plate structure;
by adopting the technical scheme: preventing dust from entering the seventh bearing directly.
In an embodiment of the present invention, the outer ring of the front end of the second cam is connected to the chassis sequentially through the sixth bearing and the connecting seat;
a second oil seal is arranged at the front end of the sixth bearing and is positioned between the second cam and the connecting seat; the connecting seat is fixed on the case through a plurality of fourth screws uniformly distributed around the circumference; by adopting the technical scheme: when the second cam rotates, the second oil seal and the connecting seat form sealing to prevent dust from directly entering the sixth bearing;
the input shaft hole of the second cam is the input end.
In an embodiment of the present invention, the right end of the first cam is connected to the first-stage turret through a flat key; the first through hole is a stepped hole, the outer ring at the left end of the first cam is connected with the case sequentially through a first bearing and a first seat plate, and the first seat plate adopts a blank plate structure;
by adopting the technical scheme: preventing dust from entering directly into the first bearing.
In an embodiment of the present invention, the right outer ring of the first cam is sequentially provided with a second bearing and a second seat plate rightward, wherein the outer ring of the second bearing contacts with the boss inside the first through hole, and the second seat plate contacts with the step surface inside the first through hole;
the outer ring at the left end of the primary turret is installed in the second seat plate through a third bearing.
In an embodiment of the present invention, the right end of the second seat plate is fixed on the step surface inside the first through hole by a plurality of bolts.
In an embodiment of the present invention, the outer ring of the right end of the primary turret is connected to a third seat plate through a fourth bearing, the third seat plate is fixed to the chassis through a plurality of second screws uniformly distributed around the circumference, wherein the third seat plate is of a blank plate structure;
by adopting the technical scheme: preventing dust from entering the fourth bearing directly.
In an embodiment of the present invention, the outer rings of the front and rear ends of the secondary turret are sequentially provided with a fifth bearing and a first oil seal towards the side away from the center of the case, the outer ring of any one fifth bearing is in contact with the case, and the outer ring of any one first oil seal is provided with a side cover;
by adopting the technical scheme: when the secondary turret rotates, the first oil seal and the side cover form sealing to prevent dust from directly entering the fifth bearing.
In an embodiment of the present invention, the side covers are fixed on the chassis by a plurality of third screws uniformly distributed around the circumference.
In an embodiment of the present invention, the left end of the chassis is provided with a third through hole, the third through hole is located below the first through hole and corresponds to the first roller, the third through hole is provided with a rectangular cover plate, the cover plate is fixed by two rows of symmetrically arranged first screws, and the cover plate adopts a blank plate structure;
by adopting the technical scheme: proper amount of lubricating oil can be injected into the box body, then the cover plate is installed, and the box body is screwed and fixed by the first screw, so that the lubricating oil is prevented from losing.
As mentioned above, the umbrella-shaped roller cam speed reducer of the utility model has a reasonable structure, and solves the problems of thin material and concentrated stress at the tooth root (rectangular tooth, tooth shape angle of 0) of the existing cam shaft; the problems that the tooth profile angle of the existing cam (trapezoidal tooth) is too large and the tooth top is lack of materials are solved; the structural strength of the camshaft is increased; the processing difficulty of the cam tooth surface is reduced, the requirement of processing precision is met, and the method has good economic and social benefits when popularized and applied.
Drawings
Fig. 1 is a front view of the assembly of the present invention.
Fig. 2 is a left side view of the assembly of the present invention.
Fig. 3 is a right side view of the assembly of the present invention.
Fig. 4 is a bottom view of the final assembly of the present invention.
Fig. 5 is a sectional view a-a of fig. 4.
Fig. 6 is a sectional view B-B of fig. 4.
Fig. 7 is a cross-sectional view taken along line C-C of fig. 4.
In the figure: 1. a cover plate; 2. a first screw; 3. a first seat plate; 4. a first bearing; 5. a chassis; 6. a first cam; 7. a flat bond; 8. a second bearing; 9. a second seat plate; 10. a third bearing; 11. a bolt; 12. a primary turret; 13. a second screw; 14. a third seat plate; 15. a fourth bearing; 16. a first jackscrew; 17. a side cover; 18. a third screw; 19. a first oil seal; 20. a secondary turret; 21. a fifth bearing; 22. a second jackscrew; 23. a first roller; 24. a connecting seat; 25. a second oil seal; 26. a second cam; 27. a sixth bearing; 28. a fourth seat plate; 29. a seventh bearing; 30. a second roller; 31. and a fourth screw.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 to 7. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
As shown in fig. 4, the utility model provides an umbrella-shaped roller cam speed reducer, which comprises a case 5,
as shown in fig. 1, a first through hole arranged along the left-right direction and two second through holes arranged in parallel and along the front-back direction are arranged in the case 5, and the two second through holes respectively penetrate through the first through hole, wherein a wheel tower mechanism is arranged in the first through hole, the two second through holes are respectively a second through hole a and a second through hole B, a first-stage cam mechanism is arranged in the second through hole a, a second-stage turret mechanism is arranged in the second through hole B, the first-stage cam mechanism is an input end, and the second-stage turret mechanism is an output end;
the wheel tower mechanism consists of a primary turret mechanism and a secondary cam mechanism, and the primary turret mechanism is connected with the secondary cam mechanism through a flat key; the primary cam mechanism drives the secondary turret mechanism to move sequentially through the primary turret mechanism and the secondary cam mechanism;
the primary turret mechanism comprises a primary turret 12; the two-stage cam mechanism includes a first cam 6; the secondary turret mechanism includes a secondary turret 20; the first-stage cam mechanism comprises a second cam 26, and one end of the second cam 26 is provided with an input shaft hole;
as shown in fig. 5, a first circular truncated cone is arranged on the primary turret 12, a plurality of second rollers 30 uniformly distributed around the circumference are arranged on the outer ring of the side surface of the first circular truncated cone, and any one of the second rollers 30 is fixed on the primary turret 12 through a first jackscrew 16 perpendicular to the second roller;
at least two first worm teeth with variable helical angles are arranged on the shaft of the second cam 26, and a tooth groove between the two first worm teeth is in contact with the second roller 30;
as shown in fig. 6, a second circular truncated cone is arranged on the secondary turret 20, a plurality of first rollers 23 uniformly distributed around the circumference are arranged on the outer ring of the side surface of the second circular truncated cone, and any one of the first rollers 23 is fixed on the secondary turret 20 through a second jackscrew 22 perpendicular to the first roller;
at least two second worm teeth with variable helical angles are arranged on the shaft of the first cam 6, and a tooth groove between the two second worm teeth is in contact with the first roller 23;
by adopting the technical scheme: the roller is contacted with a tooth groove on a shaft of the cam, and the cam pushes the roller when rotating, so that the turret does clearance or continuous rotation;
as shown in fig. 7, the outer ring of the rear end of the second cam 26 is connected to the chassis 5 sequentially through a seventh bearing 29 and a fourth seat plate 28, wherein the fourth seat plate 28 adopts a blank plate structure; by adopting the technical scheme: preventing dust from directly entering the seventh bearing;
the outer ring of the front end of the second cam 26 is connected with the case 5 through a sixth bearing 27 and a connecting seat 24 in sequence;
the front end of the sixth bearing 27 is provided with a second oil seal 25, and the second oil seal 25 is positioned between the second cam 26 and the connecting seat 24; the connecting seat 24 is fixed on the case 5 by a plurality of fourth screws 31 uniformly distributed around the circumference; by adopting the technical scheme: when the second cam rotates, the second oil seal and the connecting seat form sealing to prevent dust from directly entering the sixth bearing;
the input shaft hole of the second cam 26 is the input end;
as shown in fig. 1, the right end of the shaft of the first cam 6 is connected with a primary turret 12 through a flat key 7; the first through hole is a stepped hole, the outer ring of the left end of the first cam 6 is connected with the case 5 sequentially through the first bearing 4 and the first seat plate 3, wherein the first seat plate 3 adopts a blank plate structure; by adopting the technical scheme: preventing dust from directly entering the first bearing;
a second bearing 8 and a second seat plate 9 are sequentially arranged on the outer ring of the right end of the first cam 6 rightwards, wherein the outer ring of the second bearing 8 is in contact with a boss in the first through hole, and the second seat plate 9 is in contact with a step surface in the first through hole;
the outer ring at the left end of the primary turret 12 is arranged in the second seat plate 9 through a third bearing 10;
the right end of the second seat plate 9 is fixed on the step surface in the first through hole through a plurality of bolts 11;
the outer ring of the right end of the primary turret 12 is connected with a third seat plate 14 through a fourth bearing 15,
as shown in fig. 3, the third seat plate 14 is fixed on the chassis 5 by a plurality of second screws 13 uniformly distributed around the circumference, wherein the third seat plate 14 adopts a blank plate structure; by adopting the technical scheme: dust is prevented from directly entering the fourth bearing;
as shown in fig. 6, the outer rings of the front and rear ends of the secondary turret 20 are sequentially provided with a fifth bearing 21 and a first oil seal 19 towards one side far away from the center of the case 5, the outer ring of any one fifth bearing 21 is in contact with the case 5, and the outer ring of any one first oil seal 19 is provided with a side cover 17; by adopting the technical scheme: when the secondary turret rotates, the first oil seal and the side cover form sealing to prevent dust from directly entering the fifth bearing;
the two side covers 17 are fixed on the case 5 through a plurality of third screws 18 uniformly distributed around the circumference;
as shown in fig. 2, a third through hole is formed in the left end of the case 5, the third through hole is located below the first through hole and corresponds to the first roller 23, a rectangular cover plate 1 is arranged on the third through hole, the cover plate 1 is fixed by two rows of first screws 2 which are symmetrically arranged, and the cover plate 1 is of a blank plate structure; by adopting the technical scheme: proper amount of lubricating oil can be injected into the box body, then the cover plate is installed, and the box body is screwed and fixed by the first screw, so that the lubricating oil is prevented from losing.
When the concrete implementation, the utility model discloses an installation step does: firstly, placing the secondary turret 20 into a second through hole B of the case 5, loading the first bearing 4 into the first seat plate 3, then loading the first bearing 4 into the case 5 from one end of the first through hole, and then sequentially loading the first cam 6, the second bearing 8, the second seat plate 9, the flat key 7 and the third bearing 10;
the seventh bearing 29 is arranged in the fourth seat plate 28, then the seventh bearing and the fourth seat plate are arranged in the case 5 from one end of the second through hole A, and then the second cam 26, the sixth bearing 27, the connecting seat 24 and the second oil seal 25 are arranged in sequence and are screwed and fixed by a fourth screw 31;
the second roller 30 is arranged in the primary turret 12, screwed and fixed by the first jackscrew 16, arranged in the hole of the first cam 6, sequentially arranged in the fourth bearing 15 and the third seat plate 14 and screwed and fixed by the second screw 13;
a fifth bearing 21, a first oil seal 19 and a side cover 17 are sequentially arranged on one side of the secondary turret 20 far away from the first roller 23 and are screwed and fixed by a third screw 18;
then, the first roller 23 is installed, and the second roller is screwed and fixed by the second jackscrew 22, and then the fifth bearing 21, the first oil seal 19 and the side cover 17 are installed on one side of the secondary turret 20 close to the first roller 23 in sequence, and are screwed and fixed by the third screw 18;
finally, after a proper amount of lubricating oil is injected, the cover plate 1 is installed and is screwed and fixed by the first screw 2.
The utility model discloses a theory of operation: the main transmission structure of the utility model consists of a primary cam mechanism, a wheel tower mechanism, a secondary turret mechanism and a case; the wheel tower mechanism consists of a primary turret mechanism and a secondary cam mechanism, and the primary turret mechanism is connected with the secondary cam mechanism through a flat key; the rollers are uniformly distributed around the turret in an umbrella shape, and the included angle between the rollers in following and the axis of the turret is less than or equal to 90 degrees; after the cam mechanism is stressed, the following rollers (the following rollers are uniformly distributed around the turret circle in an umbrella shape) on the turret mechanism are pushed to rotate, the turret mechanism can perform clearance or continuous rotation, and the reduction ratio is the ratio of the number of teeth (commonly called as head number) on the shaft of the cam to the number of the following rollers.
In summary, the utility model provides an umbrella-shaped roller cam speed reducer, which has reasonable structure and solves the problems of thin material and concentrated stress at the tooth root (rectangular tooth, tooth shape angle of 0) of the existing cam shaft; the problems that the tooth profile angle of the existing cam (trapezoidal tooth) is too large and the tooth top is lack of materials are solved; the structural strength of the camshaft is increased; the processing difficulty of the cam tooth surface is reduced, and the requirement of processing precision is met. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an umbelliform roller cam speed reducer, includes quick-witted case (5), its characterized in that: a first through hole arranged along the left-right direction and two second through holes arranged in parallel along the front-back direction are formed in the case (5), the two second through holes respectively penetrate through the first through hole, a wheel tower mechanism is arranged in the first through hole, a primary cam mechanism and a secondary turret mechanism are respectively arranged in the two second through holes, the primary cam mechanism is an input end, and the secondary turret mechanism is an output end;
the wheel tower mechanism consists of a primary turret mechanism and a secondary cam mechanism, and the primary turret mechanism is connected with the secondary cam mechanism through a flat key; the primary cam mechanism drives the secondary turret mechanism to move sequentially through the primary turret mechanism and the secondary cam mechanism;
the primary turret mechanism comprises a primary turret (12); the two-stage cam mechanism comprises a first cam (6); the secondary turret mechanism comprises a secondary turret (20); the primary cam mechanism comprises a second cam (26), and one end of the second cam (26) is provided with an input shaft hole;
a first circular table is arranged on the primary turret (12), a plurality of second rollers (30) uniformly distributed around the circumference are arranged on the outer ring of the side surface of the first circular table, and any one of the second rollers (30) is fixed on the primary turret (12) through a first jackscrew (16) vertical to the second roller;
at least two first worm teeth with variable helical angles are arranged on the shaft of the second cam (26), and a tooth groove between the two first worm teeth is in contact with the second roller (30);
a second circular table is arranged on the secondary turret (20), a plurality of first rollers (23) uniformly distributed around the circumference are arranged on the outer ring of the side surface of the second circular table, and any one first roller (23) is fixed on the secondary turret (20) through a second jackscrew (22) vertical to the first roller;
at least two second worm teeth with variable helical angles are arranged on the shaft of the first cam (6), and a tooth groove between the two second worm teeth is in contact with the first roller (23).
2. The umbrella roller cam reducer of claim 1, wherein: the outer ring of the rear end of the second cam (26) is connected with the case (5) through a seventh bearing (29) and a fourth seat plate (28) in sequence, wherein the fourth seat plate (28) adopts a blank plate structure.
3. The umbrella roller cam reducer of claim 2, wherein: the outer ring of the front end of the second cam (26) is connected with the case (5) through a sixth bearing (27) and a connecting seat (24) in sequence;
a second oil seal (25) is arranged at the front end of the sixth bearing (27), and the second oil seal (25) is positioned between the second cam (26) and the connecting seat (24); the connecting seat (24) is fixed on the case (5) through a plurality of fourth screws (31) uniformly distributed around the circumference;
the input shaft hole of the second cam (26) is an input end.
4. The umbrella roller cam reducer of claim 1, wherein: the right end of the shaft of the first cam (6) is connected with the primary turret (12) through a flat key (7); the first through hole is a stepped hole, the outer ring of the left end of the first cam (6) is connected with the case (5) sequentially through the first bearing (4) and the first seat plate (3), and the first seat plate (3) is of a blank plate structure.
5. The umbrella roller cam reducer of claim 4, wherein: a second bearing (8) and a second seat plate (9) are sequentially arranged on the outer ring of the right end of the first cam (6) rightwards, wherein the outer ring of the second bearing (8) is in contact with a boss in the first through hole, and the second seat plate (9) is in contact with a step surface in the first through hole;
the outer ring of the left end of the primary turret (12) is arranged in the second seat plate (9) through a third bearing (10).
6. The umbrella roller cam reducer of claim 5, wherein: the right end of the second seat plate (9) is fixed on the step surface in the first through hole through a plurality of bolts (11).
7. The umbrella roller cam reducer of claim 5, wherein: the outer ring of the right end of the primary turret (12) is connected with a third seat plate (14) through a fourth bearing (15), the third seat plate (14) is fixed on the case (5) through a plurality of second screws (13) uniformly distributed around the circumference, and the third seat plate (14) adopts a blank plate structure.
8. The umbrella roller cam reducer of claim 1, wherein: the two-stage turret (20) is characterized in that fifth bearings (21) and first oil seals (19) are sequentially arranged on the outer rings of the front end and the rear end of the two-stage turret (20) towards one side far away from the center of the case (5), the outer ring of any one fifth bearing (21) is in contact with the case (5), and the outer ring of any one first oil seal (19) is provided with a side cover (17).
9. The umbrella roller cam reducer of claim 8, wherein: the two side covers (17) are fixed on the case (5) through a plurality of third screws (18) which are uniformly distributed around the circumference.
10. The umbrella roller cam reducer of claim 1, wherein: the left end of the case (5) is provided with a third through hole, the third through hole is located below the first through hole and corresponds to the first roller (23), a rectangular cover plate (1) is arranged on the third through hole, the cover plate (1) is fixed through first screws (2) which are symmetrically arranged in two rows, and the cover plate (1) is of a blank plate structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921580265.8U CN210715849U (en) | 2019-09-20 | 2019-09-20 | Umbrella-shaped roller cam speed reducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921580265.8U CN210715849U (en) | 2019-09-20 | 2019-09-20 | Umbrella-shaped roller cam speed reducer |
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| Publication Number | Publication Date |
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| CN210715849U true CN210715849U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921580265.8U Active CN210715849U (en) | 2019-09-20 | 2019-09-20 | Umbrella-shaped roller cam speed reducer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113478188A (en) * | 2021-07-28 | 2021-10-08 | 重庆创精温锻成型有限公司 | Parking gear tooth profile lateral extrusion forming method |
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2019
- 2019-09-20 CN CN201921580265.8U patent/CN210715849U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113478188A (en) * | 2021-07-28 | 2021-10-08 | 重庆创精温锻成型有限公司 | Parking gear tooth profile lateral extrusion forming method |
| CN113478188B (en) * | 2021-07-28 | 2022-07-29 | 重庆创精温锻成型有限公司 | Parking gear tooth profile lateral extrusion forming method |
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