Clamp for gearbox machining

Abstract

The utility model belongs to the technical field of machining clamps, and discloses a gearbox machining clamp which comprises a clamping seat, a gearbox shell is placed on the top of the clamping seat, a left installation frame and a right installation frame are installed on the top of the clamping seat, and a plurality of pneumatic clamping mechanisms which are evenly distributed are fixedly installed in each installation frame. A communicating box and an air cylinder are installed in the clamping base, the communicating box communicates with the air cylinder, and the multiple pneumatic clamping mechanisms communicate with the communicating box. Due to the fact that the pneumatic clamping mechanisms are arranged and matched with the communicating box, the pneumatic clamping mechanisms can move at the same time through the air cylinders, and due to the fact that the pneumatic clamping mechanisms are communicated with one another, it can be guaranteed that the pneumatic clamping mechanisms can abut against the side face of the irregular gearbox at the same time; the clamping stability can be guaranteed, and more importantly, the clamping device can be suitable for clamping gearbox shells of different specifications and different shapes.

Description

Technical Field

[0001] The utility model belongs to the technical field of processing fixtures, in particular to a fixture for processing a gearbox. Background Art

[0002] In the automobile gearbox manufacturing industry, it is known that the gearbox housing is an important part of the gearbox assembly. In the first processing step, the center of the bearing holes at both ends of the blank is used as the reference, and then the periphery is processed. Only in this way can the dimensional chain accuracy of the gearbox assembly parts be guaranteed and the subsequent chip allowance be uniform.

[0003] The gearbox housing has an extremely irregular shape and structure, and it is difficult for ordinary fixtures to achieve a good and stable clamping effect. The existing gearbox housing processing fixture is too complicated in design. Although it achieves good clamping during gearbox housing processing, its parts are complex and diverse, with a high damage rate, and its production cost is far higher than that of ordinary fixtures. Moreover, its scope of application is extremely limited, resulting in its lack of practicality. Therefore, it is necessary to develop a new type of gearbox housing processing fixture. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, the utility model provides a gearbox processing fixture, which has the advantage of better practicality.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gearbox processing fixture, comprising a clamping seat, a gearbox housing is placed on the top of the clamping seat, two left and right mounting frames are installed on the top of the clamping seat, a plurality of evenly distributed pneumatic clamping mechanisms are fixedly installed inside each mounting frame, a connecting box and a cylinder are installed inside the clamping seat, the connecting box and the cylinder are connected, and a plurality of the pneumatic clamping mechanisms are connected to the connecting box;

[0006] The pneumatic clamping mechanism includes a telescopic rod fixedly installed inside the mounting frame, an end of the telescopic rod outside close to the middle of the clamping seat is connected to an anti-slip abutment head, the outer surface of the anti-slip abutment head is in contact with the gearbox housing, the other end of the telescopic rod is connected to a connecting pipe, one end of the connecting pipe is connected to a connecting box.

[0007] Preferably, the plurality of pneumatic clamping mechanisms are evenly distributed front and back, and the plurality of pneumatic clamping mechanisms are in the same horizontal plane.

[0008] Preferably, the plurality of pneumatic clamping mechanisms correspond one to one on the left and right, and the axes of the two corresponding pneumatic clamping mechanisms on the left and right are on the same straight line.

[0009] Preferably, the telescopic rod includes a fixed sleeve fixedly sleeved inside the mounting frame, the interior of the fixed sleeve is sleeved with a telescopic tube, the interior of the telescopic tube is sleeved with a connecting rod, one end of the connecting rod passes through the telescopic tube and is fixedly connected to the anti-slip holding head.

[0010] Preferably, the fixed sleeve and the telescopic tube are both movably sleeved with an anti-slip sleeve at one end away from the anti-slip holding head, and the anti-slip sleeves inside the fixed sleeve and the telescopic tube are respectively fixedly sleeved on the outside of the telescopic tube and the connecting rod;

[0011] The fixed sleeve and the telescopic tube have one end near the anti-slip holding head fixedly sleeved with a limiting sleeve, and the limiting sleeves in the fixed sleeve and the telescopic tube are movably sleeved on the outside of the telescopic tube and the connecting rod respectively.

[0012] Preferably, a buffer spring is provided between the fixed sleeve and the telescopic tube and between the telescopic tube and the connecting rod, and both ends of the buffer spring are connected to the corresponding anti-drop sleeve and limiting sleeve.

[0013] Preferably, the anti-drop sleeve and the limiting sleeve are both sealed and connected to the fixed sleeve, the telescopic tube and the connecting rod, the fixed sleeve and the telescopic tube are both provided with through holes at one end away from the anti-slip holding head, and the interiors of the telescopic tube and the fixed sleeve are connected to the connecting tube through the through holes.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. Due to the arrangement of a plurality of pneumatic clamping mechanisms, the utility model can make a plurality of pneumatic clamping mechanisms move simultaneously through a cylinder in cooperation with a connecting box, and because a plurality of pneumatic clamping mechanisms are interconnected, it can be ensured that a plurality of pneumatic clamping mechanisms can simultaneously abut against the side of an irregular gearbox, which can not only ensure the stability of clamping, but more importantly, can be suitable for clamping gearbox housings of different specifications and shapes.

[0016] 2. Since the pneumatic clamping mechanisms of the present invention are interconnected, it can be ensured that the anti-slip abutting head at the front end of each pneumatic clamping mechanism contacts and abuts the gearbox with the same force, thereby avoiding the situation where the gearbox is deformed due to excessive local abutment force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the bottom of the utility model;

[0019] Figure 3 It is a front view of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the pneumatic clamping mechanism of the utility model;

[0021] Figure 5 It is a sectional view of the side of the pneumatic clamping mechanism of the utility model.

[0022] In the figure: 1. Clamping seat; 2. Mounting frame; 3. Pneumatic clamping mechanism; 31. Telescopic rod; 311. Fixed sleeve; 312. Telescopic tube; 313. Connecting rod; 314. Anti-slip sleeve; 315. Limit sleeve; 316. Buffer spring; 317. Through hole; 32. Anti-slip holding head; 4. Connecting pipe; 5. Connecting box; 6. Cylinder. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 5 As shown, the utility model provides a gearbox processing fixture, including a clamping seat 1, a gearbox housing is placed on the top of the clamping seat 1, two left and right mounting frames 2 are installed on the top of the clamping seat 1, and a plurality of evenly distributed pneumatic clamping mechanisms 3 are fixedly installed inside each mounting frame 2, a connecting box 5 and a cylinder 6 are installed inside the clamping seat 1, the connecting box 5 and the cylinder 6 are connected, and a plurality of pneumatic clamping mechanisms 3 are connected to the connecting box 5;

[0025] The pneumatic clamping mechanism 3 includes a telescopic rod 31 fixedly mounted inside the mounting frame 2, and an end of the telescopic rod 31 near the middle of the clamping seat 1 is connected to an anti-slip abutting head 32, and the outer surface of the anti-slip abutting head 32 contacts the gearbox housing, and the other end of the telescopic rod 31 is connected to a connecting pipe 4, and one end of the connecting pipe 4 is connected to a connecting box 5; due to the arrangement of a plurality of pneumatic clamping mechanisms 3, with the cooperation of the connecting box 5, a plurality of pneumatic clamping mechanisms 3 can be moved simultaneously through the cylinder 6, and since a plurality of pneumatic clamping mechanisms 3 are interconnected, it can be ensured that a plurality of pneumatic clamping mechanisms 3 can be simultaneously abutted against the side of an irregular gearbox, which can not only ensure the stability of the clamping, but more importantly, can be suitable for clamping gearbox housings of different specifications and different shapes; since a plurality of pneumatic clamping mechanisms 3 are interconnected, it can be ensured that the anti-slip abutting head 32 at the front end of each pneumatic clamping mechanism 3 has the same force when contacting and abutting against the gearbox, thereby avoiding the situation where the local resistance force is too large and the gearbox is deformed.

[0026] like Figure 1 and Figure 3 As shown, a plurality of pneumatic clamping mechanisms 3 are evenly distributed front and back, and a plurality of pneumatic clamping mechanisms 3 are in the same horizontal plane.

[0027] like Figure 1 and Figure 3 As shown, several pneumatic clamping mechanisms 3 correspond one to one on the left and right, and the axes of the two corresponding pneumatic clamping mechanisms 3 on the left and right are on the same straight line; the one-to-one correspondence on the left and right can ensure that the left and right sides of the gearbox housing are subjected to force at the same time, avoiding the situation where the gearbox rotates and slips due to misaligned force and cannot be clamped.

[0028] like Figure 3 and Figure 4 As shown, the telescopic rod 31 includes a fixed sleeve 311 fixedly sleeved inside the mounting frame 2, a telescopic tube 312 is sleeved inside the fixed sleeve 311, a connecting rod 313 is sleeved inside the telescopic tube 312, one end of the connecting rod 313 passes through the telescopic tube 312 and is fixedly connected to the anti-skid holding head 32; due to the arrangement of the telescopic tube 312 and the connecting rod 313, under the restriction of the fixed sleeve 311, it can be ensured that the overall length of the pneumatic clamping mechanism 3 can be adjusted, so that the anti-skid holding head 32 can contact the surface of the gearbox housing of different specifications, thereby achieving the effect of clamping the gearbox with the cooperation of the anti-skid holding heads 32 on the left and right sides.

[0029] like Figure 5 As shown, the fixed sleeve 311 and the telescopic tube 312 are both movably sleeved with an anti-slip sleeve 314 at one end away from the anti-slip holding head 32, and the anti-slip sleeve 314 inside the fixed sleeve 311 and the telescopic tube 312 is fixedly sleeved on the outside of the telescopic tube 312 and the connecting rod 313 respectively;

[0030] The fixed sleeve 311 and the telescopic tube 312 are fixedly sleeved at one end near the anti-slip holding head 32, and the limiting sleeve 315 in the fixed sleeve 311 and the telescopic tube 312 is movably sleeved on the outside of the telescopic tube 312 and the connecting rod 313 respectively; due to the cooperation of the anti-detachment sleeve 314 and the limiting sleeve 315, it can be ensured that the connecting rod 313 and the telescopic tube 312 can be extended and retracted, and at the same time, it can avoid the situation of excessive extension and separation from each other.

[0031] like Figure 5 As shown, a buffer spring 316 is arranged between the fixed sleeve 311 and the telescopic tube 312 and between the telescopic tube 312 and the connecting rod 313, and both ends of the buffer spring 316 are connected to its corresponding anti-drop sleeve 314 and limit sleeve 315; due to the setting of the buffer spring 316, each pneumatic clamping mechanism 3 can have a good buffering effect.

[0032] like Figure 5As shown, the anti-drop sleeve 314 and the limiting sleeve 315 are both sealedly connected to the fixed sleeve 311, the telescopic tube 312 and the connecting rod 313. The fixed sleeve 311 and the telescopic tube 312 are both provided with a through hole 317 at one end away from the anti-slip holding head 32. The interiors of the telescopic tube 312 and the fixed sleeve 311 are connected to the connecting tube 4 through the through hole 317.

[0033] The working principle and use process of this utility model:

[0034] Put the gearbox housing on the clamping seat 1, then open the cylinder 6 to inject the air into the left and right connecting boxes 5 through the pipeline, and enter the pneumatic clamping mechanism 3 through the connecting pipe 4 respectively, and finally enter the telescopic tube 312 and the fixed sleeve 311 through the through hole 317 and push the connecting rod 313. Since the movement of the connecting rod 313 can push the buffer spring 316 outside it through the anti-drop sleeve 314 outside it, and then push the limit sleeve 315 fixedly connected to the telescopic tube 312 outside it to move, thereby pushing the telescopic tube 312 to move, so that the overall length of the telescopic rod 31 is increased, and the anti-slip holding head 32 is pushed to abut against the outer surface of the gearbox housing. Since several pneumatic clamping mechanisms 3 are connected to the same connecting box 5 through the connecting pipe 4, the air pressure in several pneumatic clamping mechanisms 3 is the same, and then with the cooperation of the buffer spring 316, the anti-slip holding heads 32 at the front ends of several pneumatic clamping mechanisms 3 can all abut on the gearbox housing at the same time, and can adapt to the irregular shape of the gearbox side.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gearbox processing fixture, comprising a clamping seat (1), characterized in that: A gearbox housing is placed on the top of the clamping seat (1), and two left and right mounting frames (2) are installed on the top of the clamping seat (1), and a plurality of evenly distributed pneumatic clamping mechanisms (3) are fixedly installed inside each mounting frame (2), and a connecting box (5) and a cylinder (6) are installed inside the clamping seat (1), and the connecting box (5) and the cylinder (6) are connected, and a plurality of the pneumatic clamping mechanisms (3) are connected to the connecting box (5); The pneumatic clamping mechanism (3) comprises a telescopic rod (31) fixedly mounted inside the mounting frame (2); an end of the outside of the telescopic rod (31) close to the middle of the clamping seat (1) is connected to an anti-slip abutment head (32); an outer surface of the anti-slip abutment head (32) contacts a gearbox housing; the other end of the telescopic rod (31) is connected to a connecting pipe (4); one end of the connecting pipe (4) is connected to a connecting box (5).

2. A gearbox processing fixture according to claim 1, characterized in that: The plurality of pneumatic clamping mechanisms (3) are evenly distributed front and back, and the plurality of pneumatic clamping mechanisms (3) are located in the same horizontal plane.

3. A gearbox processing fixture according to claim 1, characterized in that: The plurality of pneumatic clamping mechanisms (3) correspond to each other on the left and right sides, and the axes of the two corresponding pneumatic clamping mechanisms (3) on the left and right sides are on the same straight line.

4. A gearbox processing fixture according to claim 1, characterized in that: The telescopic rod (31) comprises a fixed sleeve (311) fixedly sleeved inside the mounting frame (2); a telescopic tube (312) is sleeved inside the fixed sleeve (311); a connecting rod (313) is sleeved inside the telescopic tube (312); one end of the connecting rod (313) passes through the telescopic tube (312) and is fixedly connected to the anti-slip holding head (32).

5. A gearbox processing fixture according to claim 4, characterized in that: An anti-slip sleeve (314) is movably sleeved at one end of the fixed sleeve (311) and the telescopic tube (312) away from the anti-slip holding head (32), and the anti-slip sleeve (314) inside the fixed sleeve (311) and the telescopic tube (312) is fixedly sleeved on the outside of the telescopic tube (312) and the connecting rod (313) respectively; The fixed sleeve (311) and the telescopic tube (312) are both fixedly sleeved with a limiting sleeve (315) at one end close to the anti-slip holding head (32), and the limiting sleeve (315) in the fixed sleeve (311) and the telescopic tube (312) are movably sleeved on the outside of the telescopic tube (312) and the connecting rod (313), respectively.

6. A gearbox processing fixture according to claim 5, characterized in that: A buffer spring (316) is provided between the fixed sleeve (311) and the telescopic tube (312) and between the telescopic tube (312) and the connecting rod (313), and both ends of the buffer spring (316) are connected to the corresponding anti-drop sleeve (314) and the limiting sleeve (315).

7. A gearbox processing fixture according to claim 5, characterized in that: The anti-drop sleeve (314) and the limiting sleeve (315) are both sealedly connected to the fixed sleeve (311), the telescopic tube (312) and the connecting rod (313); a through hole (317) is provided at one end of the fixed sleeve (311) and the telescopic tube (312) away from the anti-slip holding head (32); and the interiors of the telescopic tube (312) and the fixed sleeve (311) are connected to the connecting tube (4) through the through hole (317).

Images