Tool for machining steering knuckle
By setting multiple machining stations on the flip-up plate, the problem that existing steering knuckle machining fixtures can only process one workpiece at a time is solved, enabling multi-angle machining of multiple steering knuckles, improving machining efficiency and the practicality of the fixture.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CIXI ZHIHENG PRECISION MACHINERY CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-05-12
AI Technical Summary
Existing steering knuckle machining fixtures can only process one workpiece at a time and cannot meet the machining requirements of different angles.
Design a tooling for machining steering knuckles, including a flip-up plate, and machining stations for main bearing holes, inner grooves and inner inclined surfaces. Through the cooperation of the flip-up plate and a robot, multiple steering knuckles can be fixed and machined at multiple angles at the same time.
It enables simultaneous machining of multiple steering knuckles, meets machining requirements at different angles, and improves machining efficiency and tooling practicality.
Smart Images
Figure CN224223351U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tooling and fixture technology, specifically to a tooling for machining steering knuckles. Background Technology
[0002] A steering knuckle is the hinge that controls wheel steering, and it is generally fork-shaped. The upper and lower forks have two coaxial holes for mounting the kingpin, and the main bearing hole on the steering knuckle is used to mount the wheel. The two lugs of the kingpin hole on the steering knuckle are connected to the fist-shaped portions at both ends of the front axle via the kingpin, allowing the front wheels to deflect around the kingpin at a certain angle, thus steering the car.
[0003] Existing steering knuckle fixtures come in various forms, such as flat placement, inclined placement, and back-to-back placement. However, these are all fixtures for machining a single steering knuckle. Currently, there is no multi-station steering knuckle machining fixture that can simultaneously meet the requirements of different machining angles. Utility Model Content
[0004] The technical problem this invention aims to solve is that existing steering knuckle machining fixtures can only process one workpiece at a time and cannot simultaneously meet the machining requirements of different angles. To address these problems, this invention provides a steering knuckle machining fixture capable of simultaneously machining multiple steering knuckles at different angles.
[0005] This utility model is achieved through the following technical solution:
[0006] A tooling for machining steering knuckles includes: a flip-up plate, both ends of which are fixed to a machining tool by bolts, and can be flipped under the action of the machine tool's flipping operation;
[0007] The main bearing hole machining station is located on one side of the flip-up plate, including a first locating pin for positioning the steering knuckle and a first clamping cylinder for pressing the steering knuckle from top to bottom;
[0008] The groove machining station is located on one side of the flip-up plate and includes a first positioning pin for positioning the main bearing hole of the steering knuckle and a second positioning pin for positioning the lug of the steering knuckle.
[0009] The concave inclined surface machining station is set on one side of the flip-up plate, including an inclined table plate connected and fixed to the flip-up plate, a second positioning pin for positioning the main bearing hole of the steering knuckle and a third positioning pin for positioning the lug of the steering knuckle, and when the steering knuckle is fixed to the inclined table plate, the concave inclined surface of the steering knuckle is parallel to the horizontal plane.
[0010] In the above solution, by setting a main bearing hole machining station, an inner groove machining station, and an inner concave inclined surface machining station on a flip plate, at least three steering knuckles can be fixed and machined simultaneously. Since the flip plate can be flipped freely under the control of the robot, the steering knuckles can also be machined at multiple angles.
[0011] In one possible implementation, there is one main bearing hole machining station, three inner groove machining stations are provided on both sides of the flip plate, and one inner concave inclined surface machining station is provided. The inner concave inclined surface machining station and the main bearing hole machining station are located on opposite sides of the flip plate.
[0012] In the above scheme, the concave inclined surface machining station only involves the machining of two small holes on one inclined surface, which is relatively fast. The main bearing hole machining station also only involves the machining of one main bearing hole, which can also be relatively fast. However, the inner groove machining station involves the machining of four holes on the inner groove of the steering knuckle, so it is slow. Therefore, more stations can be designed to machine more at once, thereby improving machining efficiency.
[0013] In one possible implementation, the main bearing hole machining station and the two inner groove machining stations are located on one side of the flip-up plate, and the inner concave inclined surface machining station and the inner groove machining station are located on the other side of the flip-up plate.
[0014] In the above scheme, because the main bearing hole machining station and the concave inclined surface machining station involve a large area in one machining operation, they are set on both sides of the flip-up plate, together with the inner groove machining station to flatten the machining cycle.
[0015] In one possible implementation, three first positioning pins are provided, and they are arranged in the same space as the two lug holes and one inner groove hole of the steering knuckle. Three first clamping cylinders are provided, and the telescopic rod of each first clamping cylinder protrudes toward the center surrounded by the three first clamping cylinders.
[0016] In the above design, the two lugs of the steering knuckle are distributed on the outer periphery of the steering knuckle, and three first locating pins are set, forming a triangular distribution on the lug perforations and inner groove perforations, which can more stably position the steering knuckle. Similarly, three first clamping cylinders are set to form a three-point pressing form.
[0017] In one possible implementation, a pressing block is provided at the front end of the telescopic rod of each of the first pressing cylinders, the pressing block being horizontally positioned and in contact with the back of the steering knuckle.
[0018] In the above scheme, the pressing block has a larger surface area than the front end of the telescopic rod, which can better press the steering knuckle.
[0019] In one possible implementation, each of the first pressing cylinders is provided with a support block on the inner side near the steering knuckle, and the support block corresponds to the pressing block in the vertical direction.
[0020] In the above scheme, the support block is used to fasten the steering knuckle. When the steering knuckle is fixed upside down, the support block supports the inner groove of the steering knuckle. Together with the pressing block of the first pressing cylinder on the back of the steering knuckle, the steering knuckle can be fixed securely. In addition, the setting of the support block can also prevent the steering knuckle from colliding with the flip-up plate during processing, so as not to damage the parts.
[0021] In one possible implementation, two second locating pins are provided, and together with the first locating post, they are arranged in the same spatial arrangement relative to the main bearing hole of the steering knuckle and the two lug holes.
[0022] In the above scheme, a first locating pin and two second locating pins together form a three-point fixing mode for the steering knuckle.
[0023] In one possible implementation, there are two third locating pins, which, together with the second locating pin, are arranged in the same spatial configuration relative to the main bearing hole of the steering knuckle and the two lug holes.
[0024] In the above scheme, a second locating pin and two third locating pins together form a three-point fixing mode for the steering knuckle.
[0025] In one possible implementation, both the first and second positioning pins, passing through the main bearing bore of the steering knuckle, are covered by cover plates. Each positioning pin has a limit pin, and the cover plate has a limiting hole through which the limit pins pass. The engagement of the limit pins and the limiting holes prevents the cover plates from moving.
[0026] The beneficial effects of this utility model are as follows:
[0027] 1. This utility model sets up multiple workpiece processing stations on a flip-up plate, which can process multiple steering knuckle workpieces at one time, and can also process steering knuckles at different angles to meet various needs.
[0028] 2. The main bearing hole machining station, inner groove machining station, and inner concave inclined surface machining station of this utility model are matched to the front and back surface requirements of the steering knuckle.
[0029] 3. The tooling for steering knuckle machining of this utility model involves few parts, has a reasonable layout, a compact structure, and high practicality. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the structure of a single steering knuckle;
[0031] Figure 2The overall structure of the tooling used in this application for machining steering knuckles Figure 1 ;
[0032] Figure 3 The overall structure of the tooling used in this application for machining steering knuckles Figure 2 ;
[0033] Figure 4 The structure for mounting the steering knuckle in the tooling used for machining the steering knuckle according to this application. Figure 1 ;
[0034] Figure 5 The structure for mounting the steering knuckle in the tooling used for machining the steering knuckle according to this application. Figure 2 ;
[0035] Figure 6 This is an exploded view of the tooling used for machining the steering knuckle in this application, together with the steering knuckle;
[0036] Figure 7 This is a structural diagram of the first positioning post and the cover plate.
[0037] In the diagram, 1. Steering knuckle; 11. Concave inclined surface; 12. Main bearing hole; 13. Ear; 14. Through hole; 2. Main bearing machining station; 21. First locating pin; 22. First clamping cylinder; 221. Telescopic rod; 222. Pressing block; 23. Support block; 3. Inner groove machining station; 31. First locating post; 32. Second locating pin; 4. Concave inclined surface machining station; 41. Inclined table; 42. Second locating post; 43. Third locating pin; 5. Flip-up plate; 6. Cover plate; 61. Limiting hole; 7. Limiting pin. Detailed Implementation
[0038] To illustrate the technical solution described in this utility model, specific embodiments are described below.
[0039] The tooling for machining steering knuckle 1 of this utility model achieves multi-angle, multi-station machining requirements by setting multiple machining stations for steering knuckle 1 on a flip-up plate 5. Specifically, multiple fixing holes are provided at both ends of the flip-up plate 5 for fixing to the robot arm of the machine tool with bolts. Driven by the flipping action of the robot arm, the flip-up plate 5 can be flipped, so that the machining axis of the machine tool can be machined to the machining stations on the upper and lower surfaces of the flip-up plate 5.
[0040] These multiple machining stations mainly include three types of machining stations: main bearing hole machining station 2, inner groove machining station 3, and inner concave inclined surface machining station 4.
[0041] The main bearing hole machining station 2 is located on one side of the flip-up plate 5, and includes a first positioning pin 21 for positioning the steering knuckle 1 and a first clamping cylinder 22 for pressing the steering knuckle 1 from top to bottom. There are three first positioning pins 21, which are arranged in the same space as the two ear holes 14 and one inner groove hole 14 of the steering knuckle 1. There are three first clamping cylinders 22, and the telescopic rod 221 of each first clamping cylinder 22 protrudes towards the center surrounded by the three first clamping cylinders 22. The three first positioning pins 21 form a three-point positioning for the steering knuckle 1. Combined with the clamping of the telescopic rods 221 of the three first clamping cylinders 22, the steering knuckle 1 is firmly fixed, which facilitates the machining of the main bearing hole 12.
[0042] To achieve better processing and prevent the steering knuckle 1 from contacting the flip-up plate 5, a support block 23 is provided inside each first clamping cylinder 22. The support block 23 is vertically positioned opposite the front end of the telescopic rod 221 of the first clamping cylinder 22. This way, when the first clamping cylinder 22 presses down on the steering knuckle 1, it presses the steering knuckle 1 onto the support block 23, and the force application point of the telescopic rod 221 of the first clamping cylinder 22 is precisely the upward support point of the support block 23. Simultaneously, to increase the force application range of the front end of the telescopic rod 221, a pressing block 222 is fixed to the front end of the telescopic rod 221 of the first clamping cylinder 22. The telescopic rod 221 can apply force through the pressing block 222 to press and clamp the steering knuckle 1.
[0043] The inner groove machining station 3 is located on one side of the flip-up plate 5, and includes a first positioning pin 31 for positioning the main bearing hole 12 of the steering knuckle 1 and a second positioning pin 32 for positioning the ear portion 13 of the steering knuckle 1. In fact, in order to machine several steering knuckles 1 at a time, the inner groove machining station 3 is set on both sides of the flip-up plate 5. Each inner groove machining station 3 has only one first positioning pin 31 matching the main bearing hole 12, and two second positioning pins 32 matching the ear portion 13 of the steering knuckle 1. One first positioning pin 31 and two second positioning pins 32 together form a three-point support for the steering knuckle 1.
[0044] The concave inclined surface machining station 4 is located on one side of the flip-up plate 5. It includes an inclined table 41 plate fixed to the flip-up plate 5, a second positioning pin 42 for positioning the main bearing hole 12 of the steering knuckle 1, and a third positioning pin 43 for positioning the ear portion 13 of the steering knuckle 1. When the steering knuckle 1 is fixed to the inclined table 41 plate, the concave inclined surface 11 of the steering knuckle 1 is parallel to the horizontal plane. Because the processing time for the concave inclined surface machining station 4 and the main bearing hole machining station 2 is short, and because the inclined table 41 plate occupies a lot of space, one concave inclined surface machining station 4 and one main bearing hole machining station 2 are set on each side of the flip-up plate 5. Inner groove machining stations 3 are reasonably arranged at other positions on both sides of the flip-up plate 5. Ultimately, two inner groove machining stations 3 are set on one side of the main bearing hole machining station 2, and one inner groove machining station 3 is set on one side of the concave inclined surface machining station 4.
[0045] It should be noted that the shape of the first positioning post 31 at the inner groove machining station 3 is not critical; it only needs to be able to position the main bearing hole 12. As shown in the accompanying drawings of this application, the first positioning post 31 is a large cylindrical shape that can be movably fitted with the main bearing hole 12. However, in other embodiments, it can also be star-shaped or polygonal. In this application, after the first positioning post 31 is fitted onto the main bearing hole 12, an irregularly shaped cover plate 6 is also placed on the inner groove of the steering knuckle 1. Both the first positioning post 31 and the second positioning post 42 are provided with limit pins 7, and the cover plate 6 is provided with limit holes 61 into which the limit pins 7 can be inserted. In this way, the cover plate 6 will not deviate during machining and can protect the main bearing hole 12.
[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.
Claims
1. A tooling for machining steering knuckles, characterized in that, include: The flip-up plate (5) is fixed to the machine tool at both ends by bolts and can be flipped under the flip control of the machine tool; The main bearing hole machining station (2) is located on one side of the flip plate (5), including a first positioning pin (21) for positioning the steering knuckle (1) and a first pressing cylinder (22) for pressing the steering knuckle (1) from top to bottom; The inner groove machining station (3) is set on one side of the flip plate (5), including a first positioning pin (31) for positioning the main bearing hole (12) of the steering knuckle (1) and a second positioning pin (32) for positioning the ear (13) of the steering knuckle (1); The concave inclined surface machining station (4) is set on one side of the flip plate (5), including an inclined table (41) plate that is connected and fixed to the flip plate (5), a second positioning pin (42) for positioning the main bearing hole (12) of the steering knuckle (1) and a third positioning pin (43) for positioning the ear (13) of the steering knuckle (1) set on the inclined table (41) plate. When the steering knuckle (1) is fixed to the inclined table (41) plate, the concave inclined surface (11) of the steering knuckle (1) is parallel to the horizontal plane.
2. The tooling for machining steering knuckles according to claim 1, characterized in that, There is one main bearing hole processing station (2), three inner groove processing stations (3) are provided on both sides of the flip plate (5), and one inner concave inclined surface processing station (4) is provided. The inner concave inclined surface processing station (4) and the main bearing hole processing station (2) are respectively located on both sides of the flip plate (5).
3. The tooling for machining steering knuckles according to claim 2, characterized in that, The main bearing hole machining station (2) and two inner groove machining stations (3) are located on one side of the flip-up plate (5), and the inner concave inclined surface machining station (4) and one inner groove machining station (3) are located on the other side of the flip-up plate (5).
4. The tooling for machining steering knuckles according to claim 3, characterized in that, There are three first positioning pins (21), and they are arranged in the same space as the two ear (13) through holes (14) and one inner groove through hole (14) of the steering knuckle (1). There are three first pressing cylinders (22), and the telescopic rod (221) of each first pressing cylinder (22) protrudes toward the center surrounded by the three first pressing cylinders (22).
5. The tooling for machining steering knuckles according to claim 4, characterized in that, Each of the first pressing cylinders (22) has a pressing block (222) at the front end of the telescopic rod (221). The pressing block (222) is horizontally positioned and can fit against the back of the steering knuckle (1).
6. The tooling for machining steering knuckles according to claim 5, characterized in that, Each of the first pressing cylinders (22) is provided with a support block (23) on the inner side near the steering knuckle (1), and the support block (23) corresponds to the pressing block (222) in the vertical direction.
7. The tooling for machining steering knuckles according to claim 1, characterized in that, There are two second positioning pins (32), and together with the first positioning post (31), they are arranged in the same space relative to the main bearing hole (12) and the two ear (13) through holes (14) of the steering knuckle (1).
8. The tooling for machining steering knuckles according to claim 1, characterized in that, Two third positioning pins (43) are provided, and together with the second positioning pin (42), they are arranged in the same spatial arrangement relative to the main bearing hole (12) of the steering knuckle (1) and the through holes (14) of the two ears (13).
9. The tooling for machining steering knuckles according to claim 1, characterized in that, The first positioning post (31) and the second positioning post (42) are covered by cover plates (6) through the main bearing hole (12) of the steering knuckle (1). The first positioning post (31) and the second positioning post (42) are provided with limit pins (7), and the cover plate (6) is provided with limit holes (61) through which the limit pins (7) can pass.