A drilling and fixing device for automotive gearbox housing

Abstract

This utility model discloses a drilling and fixing device for an automotive gearbox housing, including a base. The top of the base is provided with a pair of positioning pins corresponding to the lower hole. On the left and right sides of the pair of positioning pins, there is a support plate for supporting the bottom of the automotive gearbox housing. On the left and right sides of the base, there is a cylinder. The push rod of the cylinder is set upward. One end of the pressure plate is hinged to the top of the push rod of the cylinder, and the other end of the pressure plate extends to the top of the automotive gearbox housing. The upper and lower ends of the connecting rod are respectively connected to the pressure plate and the base. This solution uses top clamping and uses the two holes at the bottom as positioning holes to achieve fixing, which can restrict 6 degrees of freedom. The top clamping is achieved by driving the connecting rod and the pressure plate through a cylinder on each side. The fixing can be achieved without manual screw tightening, and the clamping is convenient and quick.

Description

Technical Field

[0001] This utility model relates to a drilling and fixing device for an automotive gearbox housing, belonging to the field of automotive parts processing tooling technology. Background Technology

[0002] The structural reference of the automotive gearbox housing 8 processed by this company Figure 1 and Figure 2 The top of the automotive gearbox housing 8 has a hole 81 to be drilled, and the bottom of the automotive gearbox housing 8 has a waist-shaped groove 82 with two lower holes 83 inside. When machining the hole 81, the automotive gearbox housing 8 first needs to be clamped. Previously, the clamping of the automotive gearbox housing 8 was achieved by bolt fixing, that is, the worker fixed the bolts to the clamping fixture, thereby achieving the purpose of fixing the automotive gearbox housing 8 to the clamping fixture. After the hole 81 is machined, the worker removes the bolts used to fix the automotive gearbox housing 8 to release the automotive gearbox housing 8 from the clamping fixture. However, in the above process, the clamping of the automotive gearbox housing 8 is achieved by bolt fixing, which has the disadvantages of being troublesome to clamp the automotive gearbox housing 8 and high labor intensity for the workers.

[0003] To address the aforementioned shortcomings, our company's technical personnel designed a drilling and fixing device. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a drilling and fixing device for automotive gearbox housings.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a drilling and fixing device for an automotive gearbox housing, comprising a base, wherein a pair of positioning pins corresponding to the lower hole are provided on the top of the base, and a support plate for supporting the bottom of the automotive gearbox housing is provided on each of the left and right sides of the pair of positioning pins. A cylinder is provided on each of the left and right sides of the base. The push rod of the cylinder is set upward. One end of the pressure plate is hinged to the top of the push rod of the cylinder, and the other end of the pressure plate extends to the top of the car gearbox housing. The upper and lower ends of the connecting rod are respectively connected to the pressure plate and the base.

[0006] Furthermore, the base includes a bottom plate at the bottom and a main body in the middle. The top of the main body is flat, and a boss is provided on each of the left and right sides of the top of the main body. The lower end of the connecting rod is connected to the boss.

[0007] Furthermore, a pair of connecting rods are arranged side by side on each side.

[0008] Furthermore, a drill sleeve mounting bracket is provided on the rear side of the top of the main body. The drill sleeve mounting bracket is provided with a drill sleeve, and the drill sleeve is provided with a guide hole for drilling guidance. The axis of the guide hole is collinear with the axis of the hole to be processed.

[0009] Furthermore, the main body, the base plate, and the boss are an integral structure.

[0010] Furthermore, a pair of connecting rods are provided behind the pressure plate.

[0011] The positive effects of this utility model are as follows: This solution uses top clamping and two holes at the bottom as positioning holes to achieve fixation, which can restrict 6 degrees of freedom. The top clamping is achieved by using a cylinder on each side to drive the connecting rod and the pressure plate. Fixation can be achieved without manual screw tightening, making clamping convenient and quick.

[0012] The top is also specially equipped with a drill bushing for easy positioning, so as to achieve the purpose of rapid positioning and drilling. Attached Figure Description

[0013] Figures 1 to 2 This is a schematic diagram of an automotive gearbox housing. Figures 3 to 4 This is a schematic diagram of the fixing device of this utility model; Figure 5 This is a clamping state diagram of the present invention.

[0014] Legend: 1-Base, 2-Cylinder, 3-Pressure plate, 4-Connecting rod, 5-Drill bushing mounting bracket, 6-Positioning pin, 7-Support plate, 8-Automotive gearbox housing; 11-Base plate, 12-Main body, 13-Boss; 51-Drill bushing; 81-Hole to be machined, 82-Groove, 83-Lower hole. Detailed Implementation

[0015] Please see Figures 3 to 5 This utility model provides a technical solution: a drilling and fixing device for an automotive gearbox housing, including a base 1, the top of the base 1 is provided with a pair of positioning pins 6 corresponding to the lower hole 83, and a support plate 7 for supporting the bottom of the automotive gearbox housing 8 is provided on each of the left and right sides of the pair of positioning pins 6. The support plate 7 is connected to the top of the base 1 by screws. A cylinder 2 is provided on each of the left and right sides of the base 1. The push rod of the cylinder 2 is set upward. One end of the pressure plate 3 is hinged to the top of the push rod of the cylinder 2, and the other end of the pressure plate 3 extends to the top of the automotive gearbox housing 8. The upper and lower ends of the connecting rod 4 are respectively connected to the pressure plate 3 and the base 1. A pair of connecting rods 4 are arranged side by side on each side, and another pair is arranged behind the pressure plate 3, that is, there are a total of 4 connecting rods 4 on each side.

[0016] The clamping method involves placing the car gearbox housing 8 on top of the base 1 and inserting the lower hole 83 into the positioning pin 6. Then, the cylinder 2 is activated, and the push rod of the upward cylinder 2 pushes one end of the pressure plate 3 upward. Under the restraint of the connecting rod 4, the other end of the pressure plate 3 moves downward and presses against the upper surface of the car gearbox housing 8. The clamping process can be fixed without tightening screws, making clamping convenient and quick.

[0017] Please see Figures 3 to 4 The base 1 includes a bottom plate 11 at the bottom and a main body 12 in the middle. The top of the main body 12 is flat. A boss 13 is provided on each of the left and right sides of the top of the main body 12. The lower end of the connecting rod 4 is connected to the boss 13. The main body 12, the bottom plate 11 and the boss 13 are an integral structure.

[0018] Dimensions in the left-right direction: boss 13 < body 12 < base plate 11. The body 12 is placed at the center of the top of the base plate 11. The left and right sides of the base plate 11 are provided with opening slots for mounting on machine tools (drilling machines or milling machines). In use, it is fixed to the worktable of the machine tool (drilling machine or milling machine) by mounting screws.

[0019] To facilitate rapid drilling, a drill sleeve mounting bracket 5 is provided on the rear side of the top of the main body 12. A drill sleeve 51 is provided on the drill sleeve mounting bracket 5. The drill sleeve 51 has a guide hole for drilling guidance. The axis of the guide hole is collinear with the axis of the hole 81 to be processed. After the automotive gearbox housing 8 is clamped, the drill bit can quickly find the drilling position by simply passing through the guide hole, thereby achieving the purpose of rapid positioning drilling and improving efficiency.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Any changes and modifications made without departing from the spirit and scope of this utility model fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A drilling and fixing device for an automotive gearbox housing, characterized in that: Includes a base, the top of which is provided with a pair of positioning pins corresponding to the lower hole, and a support plate for supporting the bottom of the automotive gearbox housing is provided on each of the left and right sides of the pair of positioning pins. A cylinder is provided on each of the left and right sides of the base. The push rod of the cylinder is set upward. One end of the pressure plate is hinged to the top of the push rod of the cylinder, and the other end of the pressure plate extends to the top of the car gearbox housing. The upper and lower ends of the connecting rod are respectively connected to the pressure plate and the base.

2. The drilling and fixing device for an automotive gearbox housing according to claim 1, characterized in that: The base includes a bottom plate at the bottom and a main body in the middle. The top of the main body is flat, and a boss is provided on each of the left and right sides of the top of the main body. The lower end of the connecting rod is connected to the boss.

3. The drilling and fixing device for an automotive gearbox housing according to claim 2, characterized in that: The connecting rods on each side are arranged in pairs side by side.

4. The drilling and fixing device for an automotive gearbox housing according to claim 3, characterized in that: A drill sleeve mounting bracket is provided on the top rear side of the main body. A drill sleeve is provided on the drill sleeve mounting bracket. The drill sleeve has a guide hole for drilling guidance. The axis of the guide hole is collinear with the axis of the hole to be processed.

5. The drilling and fixing device for an automotive gearbox housing according to claim 4, characterized in that: The main body, the base plate, and the boss are an integral structure.

6. The drilling and fixing device for an automotive gearbox housing according to claim 5, characterized in that: A pair of connecting rods are also provided behind the pressure plate.

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