A knuckle hydraulic clamp tool

Abstract

The utility model provides a kind of knuckle hydraulic clamp tool, belong to the field of auto parts processing.It solves the problem of the limited positioning accuracy and repeatability of the existing traditional knuckle clamp.The knuckle hydraulic clamp tool, including base and the two opposite arrangement four-axis rocker arms of being set on base, rotating disc is installed on each four-axis rocker arm, the center of rotating disc is equipped with internal expansion chuck, and rotating disc is equipped with pressing device and positioning shaft, and pressing device includes pressing piece, linkage and drive unit, and pressing piece is driven unit transmission connection by linkage, and drive unit can drive the rotating and pressing action of the pressing piece, and the knuckle hydraulic clamp tool further includes two sensors, respectively for real-time detection of knuckle steering arm position, and drive unit and internal expansion chuck are all hydraulic drive system, to provide power unit for it to realize control clamping and release.The utility model has the advantages of quick positioning clamping and positioning accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of auto parts processing and relates to a fixture, particularly a hydraulic fixture for steering knuckles. Background Technology

[0002] Traditional steering knuckle clamps typically employ external clamping methods such as mechanical blocks, threaded locking, or pneumatic drives. However, these structures have several limitations in practical applications. First, due to the complex shape, irregular structure, and multiple machining areas of the steering knuckle, external clamping methods are prone to interference with the machining tools, resulting in poor machining accessibility. Sometimes, multiple re-clamping operations are required to complete all processes, severely impacting machining efficiency. Second, traditional clamps have limited positioning accuracy and repeatability, making it difficult to meet the stringent stability requirements of modern high-precision machining centers. Under significant cutting forces, they are prone to minute displacements or vibrations, affecting the surface finish and dimensional accuracy.

[0003] In addition, traditional fixtures lack the flexibility to be adjusted. When it is necessary to process features at different angles on the steering knuckle, it is often necessary to manually adjust or even replace the fixture module, which is not only time-consuming and laborious, but also makes it difficult to guarantee the accuracy of angle positioning. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a hydraulic clamping fixture for steering knuckles.

[0005] The purpose of this utility model can be achieved through the following technical solution: a hydraulic clamping fixture for a steering knuckle, comprising a base and two opposing four-axis rocker arms arranged on the base, characterized in that each of the four-axis rocker arms is equipped with a rotating disk, and an inner expansion chuck is provided at the center of the rotating disk, the inner expansion chuck being used to tighten and fix the steering knuckle from the inside, and the rotating disk and the inner expansion chuck being driven to rotate by the four-axis rocker arms; The rotating disk is equipped with a clamping device and a positioning shaft. The clamping device is used to axially clamp the steering knuckle, and the positioning shaft is used to achieve rapid positioning of the steering knuckle. The clamping device includes a clamping component, a linkage component, and a drive unit. The clamping component is connected to the drive unit via the linkage component, and the drive unit can drive the clamping component to perform rotation and clamping actions. The steering knuckle hydraulic clamping fixture also includes two sensors, which are used to detect the position of the steering arm of the steering knuckle in real time. Both the drive unit and the internal expansion chuck are hydraulic drive systems, providing power to control clamping and releasing.

[0006] In the aforementioned hydraulic steering knuckle fixture, the sensor is a position sensor, which is mounted on a base via a mounting bracket.

[0007] In the aforementioned hydraulic clamping fixture for steering knuckles, the drive unit can be a rotary disc coupled with a hydraulic cylinder to drive the clamping component to rotate and clamp.

[0008] In the aforementioned hydraulic clamping fixture for steering knuckles, the internal expansion chuck is a hydraulically driven internal expansion mandrel, which uses pressure oil from its internal oil passages to drive the clamping disc to expand radially and achieve tensioning.

[0009] In the aforementioned hydraulic clamping fixture for steering knuckles, the positioning shaft is a telescopic structure with a guide cone surface at its top end to guide and determine the installation position of the steering knuckle.

[0010] Compared to existing technologies, this hydraulic steering knuckle fixture utilizes an internally expanding chuck for tightening, making it suitable for steering knuckles with complex shapes and preventing interference between the fixture and the machining area. Its four-axis rocker arm design allows for multi-dimensional adjustment, enhancing flexibility and adaptability to meet multi-angle machining needs. The clamping device combines rotation and clamping actions, improving clamping reliability and efficiency. The guide cone surface and telescopic structure of the positioning shaft enable rapid positioning, shortening clamping time and improving production efficiency. Real-time monitoring by sensors integrates automated control, improving machining accuracy and consistency. The overall structure is compact, suitable for production lines, and supports efficient, high-precision steering knuckle machining. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the hydraulic clamping fixture for the steering knuckle.

[0012] Figure 2 This is a partially enlarged three-dimensional structural schematic diagram of the hydraulic clamping fixture for the steering knuckle.

[0013] In the diagram, 1. Base; 2. Four-axis rocker arm; 3. Rotary disk; 4. Internal expansion chuck; 5. Positioning shaft; 6. Clamping component; 7. Linkage component; 8. Drive unit; 9. Sensor; 10. Fixing frame. Detailed Implementation

[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0015] like Figure 1 , Figure 2As shown, this steering knuckle hydraulic clamping fixture includes a base 1 and two opposing four-axis rocker arms 2 mounted on the base 1. Each four-axis rocker arm 2 is equipped with a rotating disk 3. An inner expansion chuck 4 is located at the center of the rotating disk 3. The inner expansion chuck 4 is used to tighten and fix the steering knuckle from the inside. The rotating disk 3 and the inner expansion chuck 4 are driven to rotate by the four-axis rocker arms 2. The rotating disk 3 is equipped with a clamping device and a positioning shaft 5. The clamping device is used to axially clamp the steering knuckle, and the positioning shaft 5 is used to achieve rapid positioning of the steering knuckle. The clamping device includes a clamping component 6, a linkage component 7, and a drive unit 8. The clamping component 6 is connected to the drive unit 8 through the linkage component 7. The drive unit 8 can drive the clamping component 6 to perform rotation and clamping actions. This steering knuckle hydraulic clamping fixture also includes two sensors 9, which are used to detect the position of the steering arm of the steering knuckle in real time. The drive unit 8 and the inner expansion chuck 4 are both hydraulic drive systems, which provide power units to control clamping and release.

[0016] Sensor 9 is a position sensor, which is mounted on base 1 via mounting bracket 10. Drive unit 8 can be a rotary disc coupled with a hydraulic cylinder to drive the clamping member 6 in rotational clamping motion. Internal expansion chuck 4 is a hydraulically driven internal expansion mandrel, which uses pressurized oil in its internal oil passages to drive the clamping discs to expand radially for tightening. Positioning shaft 5 is a telescopic structure with a guide cone at its top to guide and determine the installation position of the steering knuckle.

[0017] The steering knuckle is guided and positioned by the guide cone surface of the positioning shaft 5, which is telescopic to ensure rapid positioning. Subsequently, the internal expansion chuck 4 uses pressurized oil from its internal oil passages to drive the clamping discs to expand radially, tightening and securing the steering knuckle from within to prevent external interference. Simultaneously, the clamping device, driven by the drive unit 8 (such as a rotating disc coupled with a hydraulic cylinder), drives the clamping component 6 to perform rotation and clamping actions via the linkage 7, achieving axial clamping of the steering knuckle. The entire system is driven by two opposing four-axis rocker arms 2, which rotate the rotating disc 3 and the internal expansion chuck 4, thereby adjusting the angle and position of the steering knuckle. Furthermore, two sensors 9 continuously monitor the steering arm position of the steering knuckle to ensure machining accuracy.

[0018] This hydraulic steering knuckle fixture utilizes an internal expansion chuck 4 for internal tightening, making it suitable for steering knuckles with complex shapes and preventing interference between the fixture and the machining area. Its four-axis rocker arm 2 design allows for multi-dimensional adjustment, enhancing flexibility and adaptability to meet multi-angle machining needs. The clamping device combines rotation and clamping actions, improving clamping reliability and efficiency. The guide cone surface and telescopic structure of the positioning shaft 5 enable rapid positioning, shortening clamping time and improving production efficiency. The real-time monitoring function of the sensor 9 integrates with automated control, improving machining accuracy and consistency. The overall structure is compact, suitable for production lines, and supports efficient, high-precision steering knuckle machining.

[0019] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0020] Although this document uses a considerable amount of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A hydraulic clamping fixture for a steering knuckle, comprising a base (1) and two opposing four-axis rocker arms (2) mounted on the base (1), characterized in that, Each of the four-axis rocker arms (2) is equipped with a rotating disk (3), and an inner expansion chuck (4) is provided at the center of the rotating disk (3). The inner expansion chuck (4) is used to tighten and fix the steering knuckle from the inside, and the rotating disk (3) and the inner expansion chuck (4) are driven to rotate by the four-axis rocker arms (2). The rotating disk (3) is provided with a pressing device and a positioning shaft (5). The pressing device is used to axially press the steering knuckle, and the positioning shaft (5) is used to achieve rapid positioning of the steering knuckle. The clamping device includes a clamping component (6), a linkage component (7), and a drive unit (8). The clamping component (6) is connected to the drive unit (8) via the linkage component (7). The drive unit (8) can drive the clamping component (6) to perform rotation and clamping actions. The hydraulic clamping fixture for the steering knuckle also includes two sensors (9), which are used to detect the position of the steering arm of the steering knuckle in real time. Both the drive unit (8) and the internal expansion chuck (4) are hydraulic drive systems, providing them with power units to control clamping and releasing.

2. The hydraulic clamping fixture for a steering knuckle according to claim 1, characterized in that, The sensor (9) is a position sensor (9), and the sensor (9) is mounted on the base (1) by a fixing bracket (10).

3. The hydraulic clamping fixture for a steering knuckle according to claim 1, characterized in that, The drive unit (8) can be a rotary disk and a hydraulic cylinder transmission, used to drive the clamping component (6) to rotate and clamp.

4. The hydraulic clamping fixture for a steering knuckle according to claim 1, characterized in that, The internal expansion chuck (4) is a hydraulically driven internal expansion mandrel, which drives the clamping disc to expand radially through the pressure oil in the internal oil passage to achieve tension.

5. A hydraulic clamping fixture for a steering knuckle according to claim 1, characterized in that, The positioning shaft (5) is a telescopic structure with a guide cone surface at its top to guide and determine the installation position of the steering knuckle.

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