CN211614644U

CN211614644U - Gear welding fixture and gear welding system

Info

Publication number: CN211614644U
Application number: CN201922297119.0U
Authority: CN
Inventors: 张敏; 魏国光; 高志勇; 宋昊; 宋磊; 郑文涛; 杨亚伟; 王建生; 郑生虎; 袁兴伟
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-10-02
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a gear welding fixture and a gear welding system, belonging to the technical field of gear processing equipment, comprising a supporting structure for supporting a gear; the first pressing structure is detachably connected to the supporting structure and can press the gear to the supporting structure; the second pressing structure is detachably connected to the supporting structure, the combination teeth sleeved on the protruding structures of the gear can be pressed on the gear, a center hole is formed in the second pressing structure, and the diameter of the center hole is larger than the inner diameter of the combination teeth and smaller than the outer diameter of the combination teeth. The utility model provides a gear welding jig compresses tightly the gear in bearing structure through first compact structure, will combine the tooth to compress tightly in the gear through second compact structure, and the diameter of centre bore is greater than the internal diameter that combines the tooth and is less than the external diameter that combines the tooth to can be when not influencing the welded to combining tooth and gear, with the gear and the relative position that combines the tooth fixed, avoid appearing welding deformation, improve welding precision and welding efficiency.

Description

Gear welding fixture and gear welding system

Technical Field

The utility model relates to a gear machining equipment technical field especially relates to a gear welding jig and gear welding system.

Background

Electric motor car reduction gear velocity ratio is big, the rotational speed is high, and require highly to noise control moreover, consequently also relatively higher to driven gear and the combination required precision of combining the tooth, mainly adopt laser welding to weld driven gear and combination tooth at present, improve driven gear and the joint strength who combines the tooth, but at the laser welding in-process, combine tooth and driven gear to lack effectual clamping mechanism, lead to welding deformation appearing easily, reduce welding precision and welding efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gear welding jig and gear welding system to the realization avoids appearing welding deformation to driven gear and the relatively fixed of combining the tooth, improves welding precision and welding efficiency.

As the conception, the utility model adopts the technical proposal that:

a gear welding jig comprising:

a support structure for supporting the gear;

the first pressing structure is detachably connected to the supporting structure and can press the gear to the supporting structure;

the second pressing structure is detachably connected to the supporting structure and can press the combination teeth sleeved on the protruding structures of the gear onto the gear, a center hole is formed in the second pressing structure, and the diameter of the center hole is larger than the inner diameter of the combination teeth and smaller than the outer diameter of the combination teeth.

Furthermore, a through hole for the protruding structure to pass through is formed in the first compressing structure, and the diameter of the through hole is larger than the inner diameter of the gear and smaller than the outer diameter of the gear.

Furthermore, the protruding structure is provided with a step surface, and the combination teeth are pressed against the step surface.

Furthermore, the gear welding fixture further comprises a positioning column, a positioning hole opposite to the central hole is formed in the supporting structure, the positioning column penetrates through the positioning hole, and the gear is sleeved on the positioning column.

Furthermore, a positioning column opposite to the central hole is convexly arranged on the supporting structure, and the gear is sleeved on the positioning column.

Furthermore, a plurality of first fastening holes are formed in the supporting structure, a second fastening hole is formed in the position, corresponding to each first fastening hole, of the first compression structure, and a first fastening piece penetrates through the first fastening holes and the corresponding second fastening holes to achieve connection of the supporting structure and the first compression structure.

Furthermore, the plurality of first fastening holes are divided into a plurality of groups, the first fastening holes of each group are distributed in the supporting structure in a circular shape, and the diameters of the circles formed by the plurality of groups of first fastening holes are different.

Furthermore, a plurality of third fastening holes are formed in the supporting structure, a fourth fastening hole is formed in the position, corresponding to each third fastening hole, of the second compression structure, and a second fastening piece penetrates through the third fastening holes and the corresponding fourth fastening holes to achieve connection of the supporting structure and the second compression structure.

In order to achieve the above object, the utility model discloses still provide a gear welding system, including the aforesaid gear welding jig.

Furthermore, the gear welding system further comprises a laser welding machine and a driving mechanism, the driving mechanism is connected to the gear welding fixture, and the driving mechanism can drive the gear welding fixture to rotate around the central axis of the gear.

The utility model has the advantages that:

the utility model provides a gear welding jig, bearing structure has, first compact structure and second compact structure, compress tightly the gear in bearing structure through first compact structure, will combine the tooth to compress tightly in the gear through second compact structure, the diameter of the last centre bore of second compact structure is greater than the internal diameter that combines the tooth and is less than the external diameter that combines the tooth, thereby can be when not influencing the welded to combining tooth and gear, with the gear with combine the relative position of tooth fixed, avoid appearing welding deformation, improve welding precision and welding efficiency.

The utility model provides a gear welding system has above-mentioned gear welding jig, can make the gear and combine the relative position of tooth fixed, avoids appearing welding deformation, improves welding precision and welding efficiency.

Drawings

Fig. 1 is a sectional view of a gear welding jig provided by the present invention;

fig. 2 is a top view of the support structure provided by the present invention;

fig. 3 is a top view of a first compression structure provided by the present invention;

fig. 4 is a top view of a second compact structure provided by the present invention.

In the figure:

1. a support structure; 11. positioning holes; 12. a first fastening hole; 13. a third fastening hole; 2. a first compression structure; 21. perforating holes; 22. a second fastening hole; 3. a second compression structure; 31. a central bore; 32. a fourth fastening hole; 4. a positioning column; 51. a first fastener; 52. a second fastener; 6. a coupling tooth; 7. a gear; 71. a raised structure; 711. a step surface.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 to 4, the present embodiment provides a gear welding jig including a support structure 1, a first pressing structure 2, and a second pressing structure 3. Wherein the support structure 1 is adapted to support the gear wheel 7. The first pressing structure 2 is detachably connected to the supporting structure 1, and the first pressing structure 2 can press the gear 7 to the supporting structure 1. The second pressing structure 3 is detachably connected to the supporting structure 1, the second pressing structure 3 can press the combining teeth 6 sleeved on the protruding structures 71 of the gear 7 onto the gear 7, a central hole 31 is formed in the second pressing structure 3, and the diameter of the central hole 31 is larger than the inner diameter of the combining teeth 6 and smaller than the outer diameter of the combining teeth 6.

It can be understood that, since the diameter of the central hole 31 is larger than the inner diameter of the coupling tooth 6 and smaller than the outer diameter of the coupling tooth 6, when the second pressing structure 3 presses the coupling tooth 6 onto the gear 7, the joint portion of the coupling tooth 6 and the protruding structure 71 is exposed, so that the joint portion of the coupling tooth 6 and the protruding structure 71 can be welded by a laser welding machine to weld the coupling tooth 6 and the gear 7 together, and since the gear 7 is pressed against the support structure 1 by the first pressing structure 2 and the coupling tooth 6 is pressed against the gear 7 by the second pressing structure 3, the relative positions of the gear 7 and the coupling tooth 6 are fixed, thereby preventing welding deformation of the gear 7 and the coupling tooth 6 during welding, and improving welding accuracy and welding efficiency.

Further, in the present embodiment, the protruding structure 71 is provided with a stepped surface 711, and the coupling tooth 6 is pressed against the stepped surface 711 by the second pressing structure 3, so that the coupling tooth 6 can be stably fixed. In particular, the above-mentioned protruding structure 71 is a hub of the gear 7.

Referring to fig. 1 and 2, in the present embodiment, the support structure 1 is a circular plate-shaped structure, and the support structure 1 is provided with a positioning hole 11 facing the central hole 31. The gear welding jig that this embodiment provided still includes reference column 4, and in locating hole 11 was worn to locate by reference column 4, gear 7 cover was located on reference column 4. Through setting up locating hole 11 and reference column 4, can fix a position gear 7 when fixing gear 7 for the central axis of gear 7 and the central axis coincidence of locating hole 11, reference column 4 can be spacing gear 7 in the radial of gear 7 moreover. It is understood that in this embodiment, the positioning column 4 and the supporting structure 1 are separately provided, but in other embodiments, the positioning column 4 and the supporting structure 1 may also be integrally provided, specifically, the supporting plate 1 is convexly provided with the positioning column 4 opposite to the central hole 31, and the gear 7 is sleeved on the positioning column 4, so that the positioning of the gear 7 can also be realized.

Referring to fig. 1 and 3, in the present embodiment, the first pressing structure 2 is a circular plate-shaped structure, a through hole 21 for the protruding structure 71 to pass through is formed in the first pressing structure 2, and a diameter of the through hole 21 is larger than an inner diameter of the gear 7 and smaller than an outer diameter of the gear 7. It will be appreciated that the raised formations 71 can pass out of the through-going holes 21, but since the diameter of the through-going holes 21 is larger than the inner diameter of the gear wheel 7 and smaller than the outer diameter of the gear wheel 7, the first compression formation 2 can be pressed against the gear wheel 7, thereby compressing the gear wheel 7 against the support structure 1.

In order to realize the connection between the first pressing structure 2 and the supporting structure 1, so as to press the gear 7 to the supporting structure 1, in this embodiment, the supporting structure 1 is provided with a plurality of first fastening holes 12, a position of the first pressing structure 2 corresponding to each first fastening hole 12 is provided with a second fastening hole 22, and the first fastening member 51 passes through the first fastening hole 12 and the corresponding second fastening hole 22 to realize the connection between the supporting structure 1 and the first pressing structure 2. In the present embodiment, the first fastening member 51 is a threaded rod and a nut. Further, the plurality of first fastening holes 12 are divided into a plurality of groups, the first fastening holes 12 of each group are distributed in a circular shape and are distributed on the supporting structure 1, and the diameters of the circles formed by the plurality of groups of first fastening holes 12 are different. As shown in fig. 2, the present embodiment exemplarily shows a case where the plurality of first fastening holes 12 are divided into two groups, and each group of the first fastening holes 12 includes five first fastening holes 12, but in other embodiments, each group of the first fastening holes 12 may also include three, four, six, and more than six first fastening holes 12.

Through adopting threaded rod and nut, can realize first compact structure 2 and bearing structure 1's connection to compress tightly gear 7 in bearing structure 1, but also be convenient for first compact structure 2's dismantlement, thereby can take out gear 7 after 7 and the welding of combination tooth 6 are accomplished.

As shown in fig. 2 and 4, in the present embodiment, the second pressing structure 3 is a circular plate-like structure. In order to realize the connection between the second compression structure 3 and the support structure 1, the support structure 1 is provided with a plurality of third fastening holes 13, the second compression structure 3 is provided with a fourth fastening hole 32 at a position corresponding to each third fastening hole 13, and the second fastening member 52 penetrates through the third fastening holes 13 and the corresponding fourth fastening holes 32, so that the connection between the support structure 1 and the second compression structure 3 is realized. Further, in the present embodiment, the second fastener 52 is a threaded rod and a nut. In addition, in the present embodiment, the third fastening holes 13 are provided in five, the five third fastening holes 13 are provided at equal intervals, and accordingly, the fourth fastening holes 32 are also provided in five. Of course, in other embodiments, the number of the third fastening holes 13 may be three, four, six or even more according to actual needs.

Through adopting threaded rod and nut, can realize being connected of second compact structure 3 and bearing structure 1 to combine tooth 6 to compress tightly in gear 7, but also be convenient for second compact structure 3's dismantlement, thereby can take out gear 7 after 7 and the welding of combining tooth 6 are accomplished.

In conclusion, the gear welding fixture provided by the embodiment has the supporting structure 1, the first pressing structure 2 and the second pressing structure 3, the gear 7 is pressed on the supporting structure 1 through the first pressing structure 2, the combination teeth 6 are pressed on the gear 7 through the second pressing structure 3, and the diameter of the central hole 31 of the second pressing structure 3 is larger than the inner diameter of the combination teeth 6 and smaller than the outer diameter of the combination teeth 6, so that the relative positions of the gear 7 and the combination teeth 6 are fixed while the welding of the combination teeth 6 and the gear 7 is not influenced, the welding deformation is avoided, and the welding precision and the welding efficiency are improved.

The embodiment also provides a gear welding system, which comprises the gear welding fixture, the gear welding system further comprises a laser welding machine and a driving mechanism, the driving mechanism is connected to the gear welding fixture, and the driving mechanism can drive the gear welding fixture to rotate around the central axis of the gear 7, so that the laser welding machine can weld the joint part of the combination tooth 6 and the gear 7.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A gear welding jig characterized by comprising:

a support structure (1) for supporting a gear (7);

-a first pressing structure (2), removably connected to said supporting structure (1), able to press said gear (7) against said supporting structure (1);

the second pressing structure (3) is detachably connected to the supporting structure (1), the combination teeth (6) sleeved on the protruding structures (71) of the gear (7) can be pressed on the gear (7), a center hole (31) is formed in the second pressing structure (3), and the diameter of the center hole (31) is larger than the inner diameter of the combination teeth (6) and smaller than the outer diameter of the combination teeth (6).

2. The gear welding fixture according to claim 1, wherein a through hole (21) for the protruding structure (71) to pass through is formed in the first pressing structure (2), and the diameter of the through hole (21) is larger than the inner diameter of the gear (7) and smaller than the outer diameter of the gear (7).

3. The gear welding fixture according to claim 1, characterized in that a stepped surface (711) is arranged on the protruding structure (71), and the combining teeth (6) are pressed against the stepped surface (711).

4. The gear welding fixture according to claim 1, further comprising a positioning column (4), wherein the supporting structure (1) is provided with a positioning hole (11) opposite to the central hole (31), the positioning column (4) is inserted into the positioning hole (11), and the gear (7) is sleeved on the positioning column (4).

5. The gear welding fixture according to claim 1, wherein a positioning column (4) opposite to the central hole (31) is convexly arranged on the supporting structure (1), and the gear (7) is sleeved on the positioning column (4).

6. The gear welding fixture according to claim 1, wherein the support structure (1) is provided with a plurality of first fastening holes (12), the first compression structure (2) is provided with second fastening holes (22) at positions corresponding to the first fastening holes (12), and a first fastening member (51) penetrates through the first fastening holes (12) and the corresponding second fastening holes (22) to realize connection between the support structure (1) and the first compression structure (2).

7. The gear welding fixture according to claim 6, wherein the plurality of first fastening holes (12) are divided into a plurality of groups, the first fastening holes (12) of each group are distributed in the supporting structure (1) in a circular shape, and the diameters of the circles formed by the plurality of groups of first fastening holes (12) are different.

8. The gear welding fixture according to claim 1, wherein the support structure (1) is provided with a plurality of third fastening holes (13), the second compression structure (3) is provided with fourth fastening holes (32) at positions corresponding to the third fastening holes (13), and a second fastening member (52) penetrates through the third fastening holes (13) and the corresponding fourth fastening holes (32) to realize connection between the support structure (1) and the second compression structure (3).

9. A gear welding system comprising a gear welding fixture according to any one of claims 1-8.

10. The gear welding system according to claim 9, further comprising a laser welding machine and a driving mechanism, wherein the driving mechanism is connected to the gear welding jig, and the driving mechanism can drive the gear welding jig to rotate around the central axis of the gear (7).