A new knuckle processing tool clamp
By designing a new type of steering knuckle machining fixture, a combination of sliding rod, telescopic device and air cushion is used to achieve multi-point locking and force balance, which solves the problems of large footprint, high cost and complicated operation of existing fixtures, and improves the machining efficiency of steering knuckles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINTAI FAXIN MACHINERY CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-08-04
AI Technical Summary
Existing steering knuckle machining fixtures require a variety of fixtures to accommodate different models, resulting in large footprint, high cost, and cumbersome operation, which affects machining efficiency.
A novel steering knuckle machining fixture is designed, employing a locking device including a slide rod, a telescopic device, an air cushion, and an elastic element. The air cushion expands and enters the kingpin hole, providing fixation and increasing friction to prevent slippage, achieving multi-point locking with force balance.
It simplifies the clamping operation, improves the machining efficiency of the steering knuckle, reduces the footprint and cost, and improves the fixing effect.
Smart Images

Figure CN224588015U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steering knuckle processing technology, and in particular to a novel steering knuckle processing tooling fixture. Background Technology
[0002] A steering knuckle is a component on a car's steering axle. Its function is to bear the load at the front of the car and to support and drive the rotation of the front wheels. Steering knuckles are usually one-piece parts with multiple different connecting holes around the kingpin hole as the center. There are many types of steering knuckles with different shapes. During the manufacturing process, the steering knuckles need to be clamped and fixed. In order to ensure the fixing effect of the fixture, the type of fixture is usually one-to-one with the type of steering knuckle. Factories often have multiple types of fixtures installed, which not only increases the floor space, but the cost of purchasing multiple fixtures also indirectly increases the processing cost of steering knuckles.
[0003] Currently, some fixtures are applicable to fixing various steering knuckles. However, due to the different shapes and sizes of the parts connecting the steering knuckle arm to the shock absorber and the lower ball joint, as well as the different holes, the operation of such fixtures is very cumbersome, affecting the processing efficiency of the steering knuckles.
[0004] Therefore, it is necessary to propose a new type of steering knuckle machining fixture to simplify the operation of the fixture. Utility Model Content
[0005] The purpose of this invention is to solve the problem of cumbersome operation of existing fixtures, and a new type of steering knuckle machining tooling fixture is provided.
[0006] The technical solution of this utility model is: A novel steering knuckle machining fixture includes a support platform. The support platform is equipped with at least one locking device, which includes a slide rod and a telescopic device that drives the slide rod to rise and fall. One end of the slide rod is fixedly connected to a top plate, and the other end of the slide rod is fixedly connected to an end cap. A sliding sleeve that is slidably connected to the slide rod is provided between the top plate and the end cap. An elastic element is provided between the top plate and the sliding sleeve. A pressure rod is rotatably connected to the end cap. A connecting rod is provided on the sliding sleeve. One end of the connecting rod is rotatably connected to the sliding sleeve, and the other end of the connecting rod is rotatably connected to the pressure rod. An inflatable air cushion is provided on the side of the end cap away from the sliding sleeve. An inflation channel communicating with the air cushion is provided inside the slide rod. The inflation channel is connected to an air pump. When the air cushion is inflated, it pushes the pressure rod outwards to the sides of the slide rod.
[0007] Furthermore, the pressure rods are distributed in a ring around the axis of the end cap, and the connecting rods are distributed in a ring around the axis of the top plate. The connecting rods correspond one-to-one with the pressure rods, and the ring-shaped distribution of pressure rods and connecting rods can ensure force balance.
[0008] Furthermore, the end cap is equipped with three pressure rods, and the top plate is equipped with three connecting rods. The three pressure rods and the three connecting rods can ensure force balance.
[0009] Furthermore, there are four sets of locking devices, three of which are perpendicular to the support platform in locking direction, and the other set is parallel to the support platform in locking direction.
[0010] Furthermore, the elastic element is a spring, which provides elastic force to the sliding sleeve, causing the sliding sleeve to return to its original position.
[0011] Furthermore, the expanded air cushion is disc-shaped, and its diameter matches the aperture of the workpiece. This size of air cushion allows it to expand into the aperture and then contact the aperture wall, thereby increasing the friction between the air cushion and the workpiece and preventing relative sliding between the workpiece and the locking device.
[0012] Furthermore, the outer surface of the air cushion is provided with anti-slip texture. After the air cushion expands, the anti-slip texture comes into contact with the hole wall of the workpiece. The anti-slip texture can further increase the friction and prevent relative sliding between the workpiece and the locking device.
[0013] This utility model discloses a novel steering knuckle machining fixture. When locking the workpiece, a telescopic device drives the slide rod to extend. After the slide rod passes through the master pin hole, the pressure rod and connecting rod are positioned on the other side of the master pin hole. Then, the air cushion inflates and expands, opening the pressure rod. The telescopic device then retracts, and the air cushion enters and fills the master pin hole. This provides fixation to prevent shaking caused by gaps and increases the friction between the locking device and the workpiece, preventing relative slippage. Since the pressure rod has already been opened, when the telescopic device retracts, the pressure rod first contacts the outer end face of the master pin hole of the workpiece and is further opened by the workpiece as the telescopic device retracts. At this time, the connecting rod drives the sliding sleeve to slide on the slide rod, thereby achieving full unfolding of the pressure rod. Since the sliding sleeve is held in place by the top plate after the pressure rod is fully unfolded, the pressure rod will maintain its current unfolding angle as the telescopic device continues to retract, thereby hooking and pushing the workpiece against the support table, thus fixing the workpiece to the support table. Compared with traditional technology, this technical solution simplifies fixture operation and improves the machining efficiency of steering knuckles. Attached Figure Description
[0014] Figure 1 This is the front view of the present utility model; Figure 2 This is a top view of the present invention; Figure 3 This is a front view of the locking device of this utility model; Figure 4 This is a reference diagram showing the locking device of this utility model in various states; Figure 5 For reference regarding the usage status of this utility model Figure 1 ; Figure 6 For reference regarding the usage status of this utility model Figure 2 .
[0015] Reference numerals: 1. Support platform; 2. Locking device; 3. Slide rod; 4. Telescopic device; 5. Top plate; 6. End cap; 7. Sliding sleeve; 8. Elastic element; 9. Pressure rod; 10. Connecting rod; 11. Air cushion; 12. Inflation channel; 13. Anti-slip texture; 14. Workpiece; 15. Main pin hole. Detailed Implementation
[0016] 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.
[0017] Example 1: like Figure 1 and Figure 2 As shown, this embodiment provides a novel steering knuckle machining fixture, including a support platform 1. The support platform 1 is provided with at least one set of locking devices 2. The locking device 2 includes a slide rod 3 and a telescopic device 4 that drives the slide rod 3 to rise and fall. One end of the slide rod 3 is screwed to a top plate 5, and the other end of the slide rod 3 is screwed to an end cap 6. A sliding sleeve 7 that is slidably connected to the slide rod 3 is provided between the top plate 5 and the end cap 6. An elastic element 8 is provided between the top plate 5 and the sliding sleeve 7. A pressure rod 9 is hinged to the end cap 6. One end of a connecting rod 10 is hinged to the sliding sleeve 7, and the other end of the connecting rod 10 is hinged to the pressure rod 9. An expandable air cushion 11 is provided on the side of the end cap 6 away from the sliding sleeve 7. The air cushion 11 is sleeved on the outside of the slide rod 3 and fixedly connected to the slide rod 3 with screws. An inflation channel 12 communicating with the air cushion 11 is provided inside the slide rod 3. The inflation channel 12 is connected to an air pump. When the air cushion 11 is inflated, it expands the pressure rod 9 to the sides of the slide rod 3.
[0018] Preferred, such as Figure 3 and Figure 4 As shown, the pressure rods 9 are distributed in a ring around the axis of the end cap 6, and the connecting rods 10 are distributed in a ring around the axis of the top plate 5. The connecting rods 10 correspond one-to-one with the pressure rods 9. The ring-distributed pressure rods 9 and connecting rods 10 can ensure force balance.
[0019] Preferably, the end cap 6 is provided with three pressure rods 9 and the top plate 5 is provided with three connecting rods 10. The three pressure rods 9 and the three connecting rods 10 can ensure the balance of forces.
[0020] Preferably, there are four sets of locking devices 2, three of which are perpendicular to the support platform 1 and the other set is parallel to the support platform 1. Multiple sets of locking devices 2 can lock the steering knuckle from multiple points and positions, thereby preventing the steering knuckle from shaking and rotating, and ensuring the fixing effect of the steering knuckle. Since the steering knuckle has a different shape, the positions of the holes on it, except for the main pin, are different. As a preferred method, the locking device 2 and the support platform 1 are detachably connected, such as by screws. Specifically, the telescopic device 4 is detachably connected to the support platform 1 by screws. Preferably, the telescopic device 4 is a cylinder or a hydraulic cylinder.
[0021] Preferably, the elastic element 8 is a spring, which can provide elastic force to the sliding sleeve 7 to reset the sliding sleeve 7.
[0022] Preferably, the expanded air cushion 11 is disc-shaped, and the diameter of the air cushion 11 matches the aperture of the workpiece 14 it is in. This size of air cushion 11 allows it to enter the aperture of the space and expand. The expanded air cushion 11 can contact the aperture wall, thereby increasing the friction between the air cushion 11 and the workpiece 14 and preventing relative sliding between the workpiece 14 and the locking device 2.
[0023] Preferably, the outer surface of the air cushion 11 is provided with anti-slip texture 13. After the air cushion 11 expands, the anti-slip texture 13 contacts the hole wall of the workpiece 14. The anti-slip texture 13 can further improve the friction and prevent relative sliding between the workpiece 14 and the locking device 2.
[0024] When using, such as Figure 5 and Figure 6 As shown, Figure 5 This is a diagram of the non-working state when workpiece 14 is not placed. Figure 6This is a diagram showing the state when the locking device 2 locks the workpiece 14 after it has been placed. When locking the workpiece 14, the telescopic device 4 causes the slide rod 3 to extend. After the slide rod 3 passes through the main pin hole 15, the pressure rod 9 and connecting rod 10 are positioned on the other side of the main pin hole 15. Then, the air cushion 11 inflates, expanding the pressure rod 9. The telescopic device 4 then retracts, and the air cushion 11 enters and fills the main pin hole 15. This provides fixation to prevent wobbling due to gaps and also increases the friction between the locking device 2 and the workpiece 14, preventing relative slippage. Since the pressure rod 9 has been expanded, the extension... When the telescopic device 4 retracts, the pressure rod 9 first contacts the outer end face of the main pin hole 15 of the workpiece 14, and is pushed further open by the workpiece 14 as the telescopic device 4 retracts. At this time, the connecting rod 10 drives the sliding sleeve 7 to slide on the sliding rod 3, thereby realizing the full unfolding of the pressure rod 9. Since the sliding sleeve 7 will be held by the top plate 5 after the pressure rod 9 is fully unfolded, the pressure rod 9 will maintain the current unfolding angle under the continued retraction of the telescopic device 4, thereby hooking and driving the workpiece 14 to squeeze the support table 1, thereby realizing the fixation of the workpiece 14 and the support table 1. Compared with the traditional technology, this technical solution simplifies the fixture operation and improves the processing efficiency of the steering knuckle.
[0025] 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 novel steering knuckle machining fixture, comprising a support platform (1), characterized in that: The support platform (1) is provided with at least one locking device (2). The locking device (2) includes a slide rod (3) and a telescopic device (4) that drives the slide rod (3) to rise and fall. One end of the slide rod (3) is fixedly connected to a top plate (5), and the other end of the slide rod (3) is fixedly connected to an end cap (6). A sliding sleeve (7) that is slidably connected to the slide rod (3) is provided between the top plate (5) and the end cap (6). An elastic element (8) is provided between the top plate (5) and the sliding sleeve (7). The end cap (6) is rotatably connected to a pressure rod ( 9) The sliding sleeve (7) is provided with a connecting rod (10). One end of the connecting rod (10) is rotatably connected to the sliding sleeve (7), and the other end of the connecting rod (10) is rotatably connected to the pressure rod (9). The end cap (6) is provided with an expandable air cushion (11) on the side away from the sliding sleeve (7). The sliding rod (3) is provided with an inflation channel (12) that communicates with the air cushion (11). The inflation channel (12) is connected to the air pump. When the air cushion (11) is inflated, it will push the pressure rod (9) to the sides of the sliding rod (3).
2. The novel tie rod end machining fixture according to claim 1, wherein: The pressure rods (9) are distributed in a ring around the axis of the end cap (6), and the connecting rods (10) are distributed in a ring around the axis of the top plate (5). The connecting rods (10) correspond one-to-one with the pressure rods (9).
3. The novel tie rod end machining fixture according to claim 2, wherein: The end cap (6) is provided with three pressure rods (9), and the top plate (5) is provided with three connecting rods (10).
4. The novel tie rod end machining fixture according to claim 1, wherein: The locking device (2) consists of four sets, of which three sets of locking devices (2) are perpendicular to the support platform (1) in locking direction, and the other set of locking devices (2) is parallel to the support platform (1) in locking direction.
5. The novel tie rod end machining fixture according to claim 1, wherein: The elastic element (8) is a spring.
6. The novel tie rod end machining fixture according to claim 1, wherein: The expanded air cushion (11) is disc-shaped, and the diameter of the air cushion (11) matches the aperture of the workpiece (14) it is located in.
7. The novel tie rod end machining fixture according to claim 6, wherein: The outer surface of the air cushion (11) is provided with anti-slip texture (13), which comes into contact with the hole wall of the workpiece (14) after the air cushion (11) expands.