Fixture for four-axis machining of steering knuckle

Abstract

The utility model discloses a steering knuckle four-axis machining clamp which comprises a clamp base, the clamp base is in a U shape, rotating shafts are rotationally installed at the two ends of the clamp base, rotating discs are fixedly installed at the opposite ends of the two rotating shafts, one rotating shaft penetrates through the clamp base to be outwards fixedly connected with an output shaft of a first servo motor, and the other rotating shaft penetrates through the clamp base to be outwards fixedly connected with an output shaft of a second servo motor. The first servo motor is fixedly mounted on the clamp seat; a base is fixedly installed between the two rotating discs, base tables are installed on the base through two rotating structures respectively, base plates are installed on the base tables through the rotating structures, and clamping and positioning structures are installed on the base plates. The fixture for steering knuckle four-axis machining has the advantages of being capable of achieving multi-direction machining, high in progress and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of fixtures, in particular to a fixture for four-axis machining of steering knuckles. Background Art

[0002] The steering knuckle is one of the important components. The function of the steering knuckle is to transmit and bear the load at the front part of the vehicle, support and drive the front wheels to rotate around the kingpin to make the vehicle turn. Under the driving state of the vehicle, it bears variable impact loads. Therefore, it is required to have high strength.

[0003] In the traditional production and processing process, due to the large number of processes required for the machining of the steering knuckle, the process arrangement is relatively complex, and the product needs to be clamped and fixed multiple times. Such repeated clamping makes the machining efficiency relatively low, and at the same time, the multiple clamping has a great influence on the control of the dimensional accuracy of the key positions of the product. Summary of the Invention

[0004] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by this patent application is how to provide a fixture for four-axis machining of steering knuckles that can achieve multi-directional machining, high progress, and is convenient to use.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A fixture for four-axis machining of steering knuckles includes a fixture base. The fixture base is U-shaped. Rotating shafts are rotatably installed at both ends of the fixture base. Turntables are fixedly installed at the opposite ends of the two rotating shafts. One of the rotating shafts passes through the fixture base and is fixedly connected to the output shaft of a first servo motor. The first servo motor is fixedly installed on the fixture base;

[0007] A base is fixedly installed between the two turntables. Two base platforms are respectively installed on the base through two rotating structures. The base platform is installed with a substrate through a rotating structure. A clamping and positioning structure is installed on the substrate.

[0008] In this way, when machining the steering knuckle, there are two working positions, that is, two substrates are provided, which can simultaneously realize the clamping and positioning of two steering knuckles and improve the machining efficiency. During the machining process, one-direction adjustment is realized through the first servo motor, and two-direction adjustment of the substrate is realized through the rotating structure and the rotating structure, so as to realize three-direction adjustment of the substrate. The steering knuckle is clamped and positioned through the clamping and positioning structure, which can realize one-time clamping and positioning and machining in multiple directions, reduce the number of clamps, and improve the machining efficiency and machining accuracy.

[0009] Among them, the rotating structure includes two second servo motors fixedly installed on the base. The output shafts of the second servo motors pass through the base and are fixedly connected to the base platform. The base platform is in sliding fit with the base.

[0010] Wherein, a dust cover is installed on the base opposite to the second servo motor.

[0011] Wherein, the rotating structure includes a sleeve fixedly installed at the lower end of the substrate, a perforation is formed on the base, the sleeve and the perforation are connected by a bearing, an external gear ring is fixedly installed on the part of the sleeve located at the lower end of the base, a third servo motor is fixedly installed at the lower end of the base through a motor bracket, and a gear meshing with the external gear ring is arranged and fixedly installed on the output circumference of the third servo motor.

[0012] Wherein, the clamping and positioning structure includes a plurality of rotating and pressing cylinders fixedly installed on the substrate, and the clamping and positioning structure further includes a plurality of positioning frames fixedly installed on the substrate, and positioning pins are slidably installed on the positioning frames.

[0013] In summary, the fixture for four-axis machining of steering knuckles of the present invention has the advantages of being able to achieve multi-directional machining, high progress, and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of a fixture for four-axis machining of a steering knuckle according to the present invention.

[0015] Figure 2 is Figure 1 a schematic diagram from another perspective. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present invention will be further described in detail below with reference to the drawings. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "upper, lower" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention; the orientation words "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0017] As Figure 1-2 shown, a fixture for four-axis machining of a steering knuckle includes a fixture base 1, the fixture base is U-shaped, rotating shafts are rotatably installed at both ends of the fixture base, turntables 2 are fixedly installed at the opposite ends of the two rotating shafts, and the output shaft of a first servo motor 3 is fixedly connected to the rotating shaft passing through the fixture base and extending outward, and the first servo motor is fixedly installed on the fixture base;

[0018] A base 4 is fixedly installed between the two turntables. Two base platforms 5 are respectively installed on the base through two rotating structures. The base platform is installed with a base plate 6 through a rotating structure. A clamping and positioning structure is installed on the base plate.

[0019] In this way, when machining the steering knuckle, there are two workstations, that is, two base plates are provided, which can simultaneously realize the clamping and positioning of two steering knuckles, improving the machining efficiency. During the machining process, the adjustment in one direction is realized through the first servo motor, and the adjustment of the two orientations of the base plate is realized through the rotating structure and the rotating structure, thereby realizing the three-orientation adjustment of driving the base plate. The steering knuckle is clamped and positioned through the clamping and positioning structure, which can realize one-time clamping and positioning and machining in multiple orientations, reducing the number of clamping times and improving the machining efficiency and machining accuracy.

[0020] During implementation, the rotating structure includes two second servo motors fixedly installed on the base. The output shaft of the second servo motor passes through the base and is fixedly connected to the base platform. The base platform is in sliding fit with the base. By inputting power through the second servo motor, the orientation adjustment of driving the base platform is realized.

[0021] During implementation, a dust-proof cover 7 is installed on the base opposite to the second servo motor. Dust-proofing is carried out on the second servo motor.

[0022] During implementation, the rotating structure includes a sleeve 8 fixedly installed at the lower end of the base plate. A through hole is provided on the base platform. The sleeve and the through hole are connected through a bearing. An external gear ring 9 is fixedly installed on the part of the sleeve located at the lower end of the base platform. A third servo motor 10 is fixedly installed at the lower end of the base platform through a motor bracket. A gear 11 meshing with the external gear ring is circumferentially arranged and fixedly installed on the output shaft of the third servo motor. The third servo motor drives the gear to rotate, and the gear meshes with the external gear ring to drive the sleeve and the base plate to rotate, realizing the orientation adjustment of the base plate.

[0023] During implementation, the clamping and positioning structure includes a number of rotary pressing cylinders 12 fixedly installed on the base plate. The clamping and positioning structure also includes a number of positioning frames 13 fixedly installed on the base plate. A positioning pin 14 is slidably installed on the positioning frame. The steering knuckle is placed on the base plate, and the positioning pin is pushed into the hole of the steering knuckle to realize positioning. The steering knuckle is tightly fixed through the rotary pressing cylinder, completing the clamping of the steering knuckle.

[0024] Specifically, it also includes a PLC controller for controlling the actions of the first servo motor, the second servo motor, and the third servo motor.

[0025] Finally, it should be noted that those skilled in the art can make various modifications and variations to the present utility model without departing from the spirit and scope of the present utility model. In this way, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalents, the present utility model also intends to include these modifications and variations.

Claims

1. A fixture for four-axis machining of a steering knuckle, characterized in that: The fixture seat is U-shaped, with rotating shafts rotatably mounted at both ends of the fixture seat, and rotating disks are fixedly mounted at the ends of the two rotating shafts facing each other, one of the rotating shafts passes through the fixture seat and is fixedly connected to the output shaft of the first servo motor outward, and the first servo motor is fixedly mounted on the fixture seat; A base is fixedly installed between the two turntables, a base platform is respectively installed on the base platform through two rotating structures, a base plate is installed on the base platform through a rotating structure, and a clamping and positioning structure is installed on the base plate.

2. A four-axis machining fixture for a steering knuckle according to claim 1, characterized in that: The rotating structure includes two second servo motors fixedly mounted on the base, the outputs of the second servo motors pass through the base and are fixedly connected to the base, and the base is slidably fitted with the base.

3. The four-axis machining fixture for a steering knuckle according to claim 2, characterized in that: A dust cover is installed on the base facing the second servo motor.

4. The four-axis machining fixture for a steering knuckle according to claim 1, characterized in that: The rotating structure includes a sleeve fixedly mounted on the lower end of the base plate, a through hole is opened on the base, the sleeve is connected to the through hole through a bearing, an outer gear ring is fixedly mounted on the portion of the sleeve located at the lower end of the base, a third servo motor is fixedly mounted on the lower end of the base through a motor bracket, and a gear meshing with the outer gear ring is arranged and fixedly mounted on the output circumference of the third servo motor.

5. The four-axis machining fixture for a steering knuckle according to claim 1, characterized in that: The clamping and positioning structure comprises a plurality of rotating downward-pressing cylinders fixedly mounted on a base plate, and the clamping and positioning structure further comprises a plurality of positioning frames fixedly mounted on the base plate, and positioning pins are slidably mounted on the positioning frames.

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