A machining fixture for a transmission housing

Abstract

The utility model relates to the technical field of clamp, a machining clamp of gearbox housing, including support platform, the bottom of support platform is equipped with connecting seat, the lower extreme of connecting seat is equipped with fixed seat, both ends of fixed seat all are equipped with lifting cylinder, the both sides of support platform all are seted up to have guide hole, two guide holes and two lifting cylinders's position correspond, two lifting cylinders are located in two guide holes respectively and with lifting platform sliding connection, the upper end of two lifting cylinders all stretches to the upper end of support platform, the upper end of two lifting cylinders all is equipped with lifting seat, the opposite side of two lifting seats all is equipped with clamping part. The utility model discloses through lifting cylinder to the gearbox housing clamping, has guaranteed the clamping stability of gearbox housing, avoided the shell machining operation and took place the ease or shaking, improved the processing accuracy of gearbox housing.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, and in particular to a machining fixture for a gearbox housing. Background Technology

[0002] A gearbox, also known as a transmission, is an automotive component used to change the speed and torque from the engine and to change the transmission ratio between the output and input shafts in a fixed or progressively increasing manner.

[0003] A gearbox housing machining fixture is a work platform or device specifically designed for machining gearbox housings. It provides a stable placement and fixation position for the gearbox housing, ensuring that the housing does not shake or shift during machining and guaranteeing machining accuracy. When performing tapping or boring operations on the corresponding holes in the housing, the gearbox housing needs to be clamped before machining. The stability of the machining fixture directly affects the machining accuracy of the gearbox housing. When using ordinary fixtures to clamp the gearbox housing for machining, unstable clamping often occurs, affecting the machining accuracy of the gearbox housing. Therefore, it is necessary to propose an improvement to overcome the shortcomings of the existing technology. Summary of the Invention

[0004] The purpose of this utility model is to solve the problems in the prior art by providing a machining fixture for a gearbox housing, thereby solving the problem of unstable clamping of the gearbox housing in the prior art.

[0005] The technical solution of this utility model is: A machining fixture for a gearbox housing includes a support platform, a connecting seat at the bottom of the support platform, a fixed seat at the lower end of the connecting seat, lifting cylinders at both ends of the fixed seat, guide holes on both sides of the support platform, the two guide holes corresponding to the positions of the two lifting cylinders, the two lifting cylinders respectively located in the two guide holes and slidably connected to the lifting platform, the upper ends of the two lifting cylinders extending to the upper end of the support platform, lifting seats at the upper ends of the two lifting cylinders, and clamping parts on opposite sides of the two lifting seats.

[0006] As a preferred technical solution, the support platform is provided with limiting posts on both sides, and the two limiting posts are respectively located at the lower ends of the two lifting seats facing each other.

[0007] As a preferred technical solution, each of the two lifting seats is provided with a limiting groove, and the positions of the two limiting posts and the two limiting grooves are respectively corresponding.

[0008] As a preferred technical solution, the support platform is provided with a pad, which is located between the two lifting seats.

[0009] As a preferred technical solution, the support platform is provided with a positioning seat, the positioning seat has a positioning hole, and the positioning seat is located above the pad block.

[0010] As a preferred technical solution, the bottom of the support platform is provided with a base, and the base is provided with fixing holes.

[0011] As a preferred technical solution, a plurality of guide holes are evenly provided at a certain distance on the support platform between the two lifting seats, and a plurality of mounting holes are provided on the fixed seat, with the guide holes and mounting holes corresponding to each other.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model discloses a machining fixture for a gearbox housing. A support platform is provided, with a connecting seat and a fixing seat at the bottom of the support platform. A lifting cylinder is mounted on the fixing seat and is slidably connected to the support platform. A lifting seat is mounted on the upper end of the lifting cylinder, and a clamping part is provided on the lifting seat for clamping and fixing the gearbox housing. By clamping the gearbox housing with the lifting cylinder, the clamping stability of the gearbox housing is ensured, preventing slippage or shaking during housing machining and improving the machining accuracy of the gearbox housing. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the machining fixture for the gearbox housing of this utility model; Figure 2 This is a front view of the first embodiment of the machining fixture for the gearbox housing of this utility model; Figure 3 This is a side view of the machining fixture for the gearbox housing of this utility model; Figure 4 This is a front view of a second embodiment of the machining fixture for the gearbox housing of this utility model; Figure 5 This is a schematic diagram of the clamping and fixing of the gearbox housing of this utility model.

[0014] Among them, 1. Lifting seat; 2. Lifting cylinder; 3. Limiting groove; 4. Limiting column; 5. Fixing hole; 6. Base; 7. Supporting platform; 8. Pad; 9. Positioning hole; 10. Positioning seat; 11. Fixing seat; 12. Connecting seat; 13. Guide hole. Detailed Implementation

[0015] To make the technical means, technical features, utility model purpose and technical effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0016] Example 1: like Figure 1-3 The diagram shown is a structural schematic of the first embodiment of the machining fixture for the gearbox housing of this utility model.

[0017] The processing fixture for the gearbox housing in this embodiment includes a lifting platform 7. A connecting seat 12 is fixed on the bottom axis of the lifting platform 7. A fixed seat 11 is fixed at the lower end of the connecting seat 12. The connecting seat 12 is fixed on the central axis of the fixed seat 11. Lifting cylinders 2 are fixed at both ends of the fixed seat 11. The piston rod of the upper cylinder 2 is fixedly connected to the fixed seat 11. Guide holes 13 are provided on both the left and right sides of the lifting platform 7. The guide holes 13 correspond to the positions of the lifting cylinders 2. The cylinder body of the lifting cylinder 2 is slidably installed in the guide holes 13. The cylinder body of the lifting cylinder 2 extends to the upper end of the lifting platform 7. A lifting seat 1 is fixed at the upper end of the cylinder body of the lifting cylinder 2. Clamping parts are provided on the opposite sides of the lifting seats 1 on both sides of the lifting platform 7 for clamping and fixing the gearbox housing.

[0018] Limiting posts 4 are fixed on both the left and right sides of the lifting platform 7. Limiting grooves 3 are opened at the lower ends of the opposite sides of the two lifting seats 1. The positions of the limiting grooves 3 and the limiting posts 4 are corresponding. The limiting grooves 3 are located directly above the limiting posts 4. As the lifting cylinder 2 moves in and out, the limiting posts 4 extend into or out of the limiting grooves 3. The height of the limiting posts 4 corresponds to the installation height of the clamping seat on the edge of the gearbox housing. When clamping and fixing the gearbox housing, it is convenient to position the lifting cylinder 2. In addition, during the processing of the gearbox housing, the high-frequency vibration of the gearbox housing can easily cause the lifting seat to shift. The limiting posts 4 and the limiting grooves 3 play a role in increasing the stability of the lifting seat 1, thereby further ensuring the processing stability of the gearbox housing.

[0019] A pad 8 is fixed to the upper end of the lifting platform 7 for the installation and fixation of the gearbox housing. The pad 8 is more conducive to the heat dissipation of the housing and the outflow of coolant during the processing of the gearbox housing, thus ensuring the heat dissipation efficiency of the gearbox housing.

[0020] The bottom of the support platform 7 is provided with a base 6, and a fixing hole 5 is provided on the base 6. The fixing hole 5 is used for the installation and fixing of the support platform 7. The height difference between the base 6 and the support platform 7 is greater than the maximum lifting stroke of the lifting cylinder 2.

[0021] A positioning seat 10 is fixed on the support platform 7. The positioning seat 10 has a positioning hole 9. The positioning hole 9 is located above the support platform 7. When the gearbox housing is fixedly installed, it is installed in the positioning hole 9 by bolts and the bolts are tightened to the upper end face of the gearbox housing. This further enhances the installation stability of the gearbox housing, ensures a stable processing environment for the gearbox housing, and thus ensures the processing accuracy of the gearbox housing.

[0022] Example 2: like Figure 4 The image shown is a front view of a second embodiment of the machining fixture for the gearbox housing of this utility model.

[0023] The lifting platform 7 between the two clamping seats 1 shown has multiple guide holes 13 evenly provided, and the guide holes 13 on the left and right sides of the lifting platform 7 are mirrored. Correspondingly, the fixing seat 11 has multiple mounting holes evenly provided, and the mounting holes are positioned to correspond to the guide holes 13. This is used to clamp and fix gearbox housings of different specifications and sizes, increasing the adaptability of the machining fixture.

[0024] like Figure 5 The diagram shown is a schematic of the clamping and fixing state of the gearbox housing of this utility model.

[0025] Working principle: During the gearbox housing clamping operation, the lifting cylinder 2 drives the lifting seat 1 to slide upward a certain distance, and the gearbox housing slides from the side onto the pad block 8. The edge clamping seat of the gearbox housing slides to the bottom of the lifting seat 1. The lifting cylinder 2 then drives the lifting seat 1 to slide downward to the upper end of the clamping seat of the gearbox housing and clamp it. The limiting post 4 is inserted into the limiting groove 3, thus realizing the clamping and fixing of the gearbox housing.

[0026] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of the claims of this utility model should fall within the technical scope of this utility model.

Claims

1. A machining jig for a transmission case, characterized by, The support platform (7) is provided with a connecting seat (12) at the bottom of the support platform (7). A fixed seat (11) is provided at the lower end of the connecting seat (12). Lifting cylinders (2) are provided at both ends of the fixed seat (11). Guide holes (13) are provided on both sides of the support platform (7). The two guide holes (13) correspond to the positions of the two lifting cylinders (2). The two lifting cylinders (2) are respectively located in the two guide holes (13) and are slidably connected to the support platform (7). The upper ends of the two lifting cylinders (2) extend to the upper end of the support platform (7). Lifting seats (1) are provided at the upper ends of the two lifting cylinders (2). Clamping parts are provided on the opposite sides of the two lifting seats (1).

2. The machining jig for a transmission case according to claim 1, characterized by The support platform (7) is provided with limiting posts (4) on both sides, and the two limiting posts (4) are respectively located at the lower ends of the two lifting seats (1) facing each other.

3. The machining jig for a transmission case according to claim 2, characterized by, Both lifting seats (1) have limit grooves (3), and the positions of the two limit posts (4) and the two limit grooves (3) are respectively opposite to each other.

4. The machining jig for a transmission case according to claim 1, characterized by The support platform (7) is provided with a pad (8), which is located between the two lifting seats (1).

5. The machining jig for a transmission case according to claim 4, characterized by The support platform (7) is provided with a positioning seat (10), and the positioning seat (10) is provided with a positioning hole (9). The positioning seat (10) is located above the pad (8).

6. The machining jig for a transmission case according to claim 1, characterized by The support platform (7) has a base (6) at its bottom, and a fixing hole (5) is provided on the base (6).

7. The machining jig for a transmission case according to claim 1, characterized by Multiple guide holes (13) are evenly provided on the support platform (7) between the two lifting seats (1) at a certain distance, and multiple mounting holes are provided on the fixed seat (11). The guide holes and mounting holes are positioned corresponding to each other.

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