A fixture device applied to rack milling of a direction machine

Abstract

The utility model relates to a kind of clamp device applied to direction machine rack gear milling, belong to direction machine rack technical field, including workbench, the top of workbench is fixedly installed with base, and one end of base top is fixedly connected with processing table.The utility model has the beneficial effect that by setting air pressure oil cylinder b and air pressure oil cylinder a in the two sides of clamp respectively, the stress point of triangular shape can be formed to the movable clamp a stress surface, respectively as back push power point and bottom pull power point, so as to improve the stress area of clamp when clamping rack body, and the stress point of triangular shape is more stable, clamp a and clamp b will not produce bending deformation due to uneven stress, in addition, the cooperation of auxiliary frame, processing table and reinforcing rod can further reduce the reaction force of rack body on clamp, so as to achieve the purpose of further reducing the deformation probability of clamp and rack body while effectively protecting two sides air pressure oil cylinder.

Description

Technical Field

[0001] This utility model relates to the field of steering gear rack technology, and in particular to a clamping device for milling teeth on steering gear racks. Background Technology

[0002] The automotive steering gear is the core component of the vehicle steering system, responsible for converting the rotation of the steering wheel into the steering action of the wheels, which directly affects the driving feel and safety. Existing steering gears include structures such as hydraulic cylinders, housings, and racks. Among them, the rack needs to have its surface milled during production, so it is necessary to pre-lock and fix the rack.

[0003] When processing racks, the rack to be processed is first placed on the worktable, and then the two sides of the rack are clamped simultaneously by the clamps on both sides to achieve the positioning of the rack. However, when it is necessary to clamp a long rack, the clamp will bend and deform due to uneven force at the power end of the clamp, which will eventually cause the rack to be deformed under pressure or even break.

[0004] Therefore, a clamping device for milling gear racks in steering gears is proposed to solve the aforementioned problems. Utility Model Content

[0005] In view of the above-mentioned problems in the prior art, the main objective of this utility model is to provide a clamping device for milling gear racks in steering gears.

[0006] The technical solution of this utility model is as follows: a clamping device for milling gear rack teeth of a steering gear includes a worktable, a base fixedly installed on the top of the worktable, a processing table fixedly connected to one end of the top of the base, an auxiliary frame fixedly connected to the other end of the top of the base, two reinforcing rods fixedly connected between the auxiliary frame and the processing table, a pneumatic cylinder a fixedly installed on the outer side of the processing table, a moving part slidably connected to the top of the base, a fixed block fixedly installed at the bottom of the moving part, a bottom pulling power point provided on the outer wall of the fixed block, two pneumatic cylinders b fixedly installed on the outer side of the auxiliary frame, and two back pushing power points provided on the side of the moving part near the pneumatic cylinder b.

[0007] By adopting the above technical solution, and through the combined use of the auxiliary frame, processing table and reinforcing rod, the reaction force of the rack body on the fixture can be further reduced, thereby achieving the purpose of further reducing the deformation probability of the fixture and rack body while effectively protecting the pneumatic cylinders on both sides.

[0008] In a preferred embodiment, each of the moving parts is fixedly connected to an L-shaped part on the side of the processing table that is close to the moving part. A clamp b is fixedly installed at the top of one of the L-shaped parts, and a clamp a is fixedly installed at the top of the other L-shaped part. The rack body is clamped between the clamp a and the clamp b.

[0009] By adopting the above technical solution, the sliding of the moving part can drive the clamp a and the L-shaped part to move, and cooperate with the clamp b to improve the clamping stability of the rack body.

[0010] In a preferred embodiment, a control component is provided on the top of the base. The control component includes a pressure sensor embedded in the side of clamp a and clamp b that are close to each other. A controller is provided on the outside of the base. The piston rod of the pneumatic cylinder a is fixedly connected to the bottom pulling power point on the fixed block.

[0011] By adopting the above technical solution, the clamping force of clamp a and clamp b can be monitored through the function of pressure sensors.

[0012] In a preferred embodiment, the piston rod of the pneumatic cylinder b is fixedly connected to the back push power point on the moving part, and both the pneumatic cylinder a and the pneumatic cylinder b are internally connected to oil pipelines.

[0013] By adopting the above technical solution and setting up oil pipelines, compressed gas can be provided to the pneumatic cylinder.

[0014] In a preferred embodiment, an air compressor is provided on the outside of the base, and both the pneumatic cylinder a and the pneumatic cylinder b are connected to the air compressor via oil pipes.

[0015] By adopting the above technical solution, it is ensured that pneumatic cylinder a and pneumatic cylinder b can operate normally.

[0016] In a preferred embodiment, a bottom support member is fixedly connected to the top of the base and between the two L-shaped pieces, and the bottom support member is made of rubber.

[0017] By adopting the above technical solution, hollowness at the bottom of the rack body can be prevented, thus improving the clamping stability of the rack body.

[0018] In a preferred embodiment, limit strips are fixedly connected to both sides of the base, and limit members are fixedly connected to both ends of the bottom of the movable part, with the limit members engaging with the corresponding limit strips.

[0019] By adopting the above technical solution and using the combination of limiting components and limiting strips, the stability of the moving parts during the sliding process can be improved.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0021] 1. In this utility model, by setting pneumatic cylinder b and pneumatic cylinder a on both sides of the fixture, a triangular force-bearing point can be formed on the force-bearing surface of the movable fixture a, which is the back pushing power point and the bottom pulling power point, respectively. This can increase the force-bearing area when the fixture clamps the rack body, and the triangular force-bearing point is more stable, preventing the fixtures a and b from bending and deforming due to uneven force. In addition, the combined use of the auxiliary frame, processing table and reinforcing rod can further reduce the reaction force of the rack body on the fixture, thereby further reducing the probability of deformation of the fixture and rack body while effectively protecting the pneumatic cylinders on both sides.

[0022] 2. In this utility model, the clamping force of clamp a and clamp b can be monitored by the pressure sensor. When the preset pressure value of the pressure sensor is reached, it will transmit the information to the controller, and the controller will control the pneumatic cylinder b and pneumatic cylinder a to stop working. This can avoid damage to the rack body caused by excessive clamping force of clamp a and clamp b. Attached Figure Description

[0023] Figure 1 This utility model provides an overall perspective view of a clamping device for milling gear racks in a steering gear;

[0024] Figure 2 This utility model provides an overall structural schematic diagram of a clamping device for milling gear racks in steering gears;

[0025] Figure 3 This utility model provides a bottom view of a clamping device for milling gear rack teeth in a steering gear;

[0026] Figure 4 This utility model provides a clamping device for milling gear rack teeth in steering gears. Figure 2 Enlarged view of point A in the middle.

[0027] Legend: 1. Workbench; 2. Base; 3. Machining table; 4. Reinforcing rod; 5. Auxiliary frame; 6. Moving part; 7. Fixture a; 8. Fixture b; 9. Rack body; 10. Controller; 11. Pneumatic cylinder a; 12. Pneumatic cylinder b; 13. Oil pipeline; 14. Rear pushing power point; 15. L-shaped part; 16. Bottom support part; 17. Bottom pulling power point; 18. Fixing block; 19. Limiting strip; 20. Limiting part; 21. Pressure sensor. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] Reference Figure 1-4 A clamping device for milling gear rack teeth in a steering gear includes a worktable 1, a base 2 fixedly mounted on the top of the worktable 1, a machining table 3 fixedly connected to one end of the top of the base 2, an auxiliary frame 5 fixedly connected to the other end of the top of the base 2, two reinforcing rods 4 fixedly connected between the auxiliary frame 5 and the machining table 3, a pneumatic cylinder a11 fixedly mounted on the outer side of the machining table 3, a movable component 6 slidably connected to the top of the base 2, a fixed block 18 fixedly mounted on the bottom of the movable component 6, a bottom pulling power point 17 provided on the outer wall of the fixed block 18, two pneumatic cylinders b12 fixedly mounted on the outer side of the auxiliary frame 5, and two back-pushing power points provided on the side of the movable component 6 near the pneumatic cylinders b12. Point 14: By setting pneumatic cylinders b12 and a11 on both sides of the fixture, a triangular force point can be formed on the force-bearing surface of the movable fixture a7, namely the back pushing power point 14 and the bottom pulling power point 17. This can increase the force-bearing area when the fixture clamps the rack body 9, and the triangular force point is more stable, preventing the fixtures a7 and b8 from bending and deforming due to uneven force. In addition, the combined use of the auxiliary frame 5, the processing table 3 and the reinforcing rod 4 can further reduce the reaction force of the rack body 9 on the fixture, thereby further reducing the deformation probability of the fixture and the rack body 9 while effectively protecting the pneumatic cylinders on both sides.

[0030] Specifically, L-shaped parts 15 are fixedly connected to the side of the moving part 6 that is close to the processing table 3. A clamp b8 is fixedly installed on the top of one of the L-shaped parts 15. By sliding the moving part 6, the clamp a7 and the L-shaped part 15 can be moved and cooperate with the clamp b8 to improve the clamping stability of the rack body 9. A clamp a7 is fixedly installed on the top of the other L-shaped part 15. The rack body 9 is clamped between the clamp a7 and the clamp b8. A control component is provided on the top of the base 2. The control component includes a pressure sensor 21 embedded on the side of the clamp a7 and the clamp b8 that is close to each other. Through the action of the pressure sensor 21, the clamping force of the clamp a7 and the clamp b8 can be monitored. When the preset pressure value of the pressure sensor 21 is reached, it will transmit the information to the controller 10, and the controller 10 will control the pneumatic cylinders b12 and a11 to stop working. This can prevent damage to the rack body 9 caused by excessive clamping force of the clamps a7 and b8. The controller 10 is provided on the outside of the base 2. The piston rod of the pneumatic cylinder a11 is fixedly connected to the bottom pulling power point 17 on the fixed block 18, and the piston rod of the pneumatic cylinder b12 is fixedly connected to the back pushing power point 14 on the moving part 6. Both the pneumatic cylinders a11 and b12 are connected to the oil pipes 13. The oil pipes 13 can provide compressed gas to the pneumatic cylinders.

[0031] Specifically, an air compressor is installed on the outside of the base 2. Both pneumatic cylinders a11 and b12 are connected to the air compressor via oil lines 13 to ensure that pneumatic cylinders a11 and b12 can operate normally. A bottom support 16 is fixedly connected to the top of the base 2 between the two L-shaped parts 15 to prevent the bottom of the rack body 9 from being hollow and to improve the clamping stability of the rack body 9. The bottom support 16 is made of rubber. Limiting strips 19 are fixedly connected to both sides of the base 2. Limiting parts 20 are fixedly connected to both ends of the bottom of the moving part 6. Through the cooperation of the limiting parts 20 and the limiting strips 19, the stability of the moving part 6 during the sliding process can be improved. The limiting parts 20 are engaged with the corresponding limiting strips 19.

[0032] Working principle: First, the rack body 9 can be placed between clamp a7 and clamp b8. Then, the controller 10 controls the pneumatic cylinders b12 and a11 on both sides of the clamp to start, and the air compressor provides compressed gas to the corresponding pneumatic cylinders, which can form a triangular force point on the force-bearing surface of the movable clamp a7, thereby increasing the force-bearing area when the clamp clamps the rack body 9. During the clamping process, the clamping force of clamp a7 and clamp b8 can be monitored by the pressure sensor 21. When the preset pressure value of the pressure sensor 21 is reached, it will transmit the information to the controller 10, and the controller 10 will control the pneumatic cylinders b12 and a11 to stop working, thereby avoiding damage to the rack body 9 due to excessive clamping force of clamp a7 and clamp b8.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0034] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A clamping device for milling gear rack teeth in a steering gear, comprising a worktable (1), characterized in that: A base (2) is fixedly installed on the top of the workbench (1). A processing table (3) is fixedly connected to one end of the top of the base (2). An auxiliary frame (5) is fixedly connected to the other end of the top of the base (2). Two reinforcing rods (4) are fixedly connected between the auxiliary frame (5) and the processing table (3). A pneumatic cylinder a (11) is fixedly installed on the outside of the processing table (3). A moving part (6) is slidably connected to the top of the base (2). A fixed block (18) is fixedly installed at the bottom of the moving part (6). A bottom pulling power point (17) is provided on the outer wall of the fixed block (18). Two pneumatic cylinders b (12) are fixedly installed on the outside of the auxiliary frame (5). Two back pushing power points (14) are provided on the side of the moving part (6) near the pneumatic cylinder b (12).

2. The clamping device for milling gear rack teeth according to claim 1, characterized in that: The moving part (6) is fixedly connected to an L-shaped part (15) on the side close to the processing table (3). One of the L-shaped parts (15) is fixedly mounted with a clamp b (8) at the top, and the other L-shaped part (15) is fixedly mounted with a clamp a (7) at the top. The rack body (9) is clamped between the clamp a (7) and the clamp b (8).

3. The clamping device for milling gear rack teeth according to claim 1, characterized in that: The base (2) is provided with a control component on its top. The control component includes a pressure sensor (21) embedded in the side of clamp a (7) and clamp b (8) close to each other. The base (2) is provided with a controller (10) on its outer side. The piston rod of the pneumatic cylinder a (11) is fixedly connected to the bottom pulling power point (17) on the fixed block (18).

4. The clamping device for milling gear rack teeth according to claim 1, characterized in that: The piston rod of the pneumatic cylinder b (12) is fixedly connected to the back push power point (14) on the moving part (6), and the interior of the pneumatic cylinder a (11) and the pneumatic cylinder b (12) are both connected to oil pipes (13).

5. A clamping device for milling gear rack teeth according to claim 1, characterized in that: An air compressor is provided on the outside of the base (2), and the pneumatic cylinder a (11) and pneumatic cylinder b (12) are both connected to the air compressor through oil pipes (13).

6. A clamping device for milling gear rack teeth according to claim 1, characterized in that: A bottom support (16) is fixedly connected to the top of the base (2) and between the two L-shaped pieces (15), and the bottom support (16) is made of rubber.

7. A clamping device for milling gear rack teeth according to claim 1, characterized in that: Both sides of the base (2) are fixedly connected to limit strips (19), and both ends of the bottom of the moving part (6) are fixedly connected to limit parts (20), and the limit parts (20) are engaged on the corresponding limit strips (19).

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