Knuckle machining clamp

Abstract

The utility model discloses a steering knuckle machining clamp, and relates to the technical field of automobile steering knuckle machining fixing, the steering knuckle machining clamp comprises a reference structure, a stabilizing structure, a positioning structure and a clamping structure, the reference structure comprises a reference column A, a reference column B and a reference column C, and the stabilizing structure comprises a stabilizing column A, a stabilizing column B and a stabilizing column C; the positioning structure comprises an angular positioning column A, an angular positioning column B and an auxiliary positioning column; the clamping structure comprises a rotary pressing claw A, a rotary pressing claw B, a rotary pressing claw C and a rotary pressing claw D; according to the technical scheme, the steering knuckle body is corrected to be in the horizontal state through the reference structure, the stable structure is adopted to be supported on the edge of the steering knuckle body so that it can be guaranteed that the steering knuckle body is stably placed, and after the steering knuckle body is movably positioned through the positioning structure, the clamping structure can apply pressure to the steering knuckle body from the top to the bottom; and fixing work of the steering knuckle body is facilitated, and the machining efficiency of the steering knuckle body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile steering knuckle processing and fixing, and specifically relates to a steering knuckle processing fixture. Background Art

[0002] The steering knuckle, also known as the "sheep's horn", is one of the important parts in the automobile steering axle, which can enable the automobile to drive stably and transmit the driving direction sensitively. The function of the steering knuckle is to transmit and bear the load at the front part of the automobile, support and drive the front wheels to rotate around the kingpin to make the automobile turn. Under the driving state of the automobile, it bears variable impact loads. Therefore, it is required to have high strength.

[0003] The steering knuckle is the hinge of the wheel steering, generally in a forked shape. There are two coaxial holes for installing the kingpin on the upper and lower forks, and the steering knuckle journal is used to install the wheel. The two ears of the pin hole on the steering knuckle are connected to the knuckle parts at both ends of the front axle through the kingpin, so that the front wheels can deflect a certain angle around the kingpin to make the automobile turn. In order to reduce wear, a bronze bushing is pressed into the pin hole of the steering knuckle, and the lubrication of the bushing is carried out by injecting grease through the grease nipple installed on the steering knuckle. In order to make the steering flexible, a bearing is installed between the lower ear of the steering knuckle and the knuckle part of the front axle. An adjusting gasket is also installed between the upper ear of the steering knuckle and the knuckle part to adjust the gap therebetween.

[0004] During the production and processing of the steering knuckle, it is necessary to use a tooling fixture to fix it, so as to support operations such as drilling, grinding, polishing and cutting on the steering knuckle.

[0005] At present, as an ordinary means of transportation, the demand for automobiles is increasing. In order to meet the market demand, each automobile manufacturer needs to continuously carry out technological innovation. The clamping and fixing of the existing steering knuckle mainly adopts the form of manual fixture clamping. During the operation process, manual loading and unloading of the clamp is required, and frequent loading and unloading on the fixture is needed. This process takes a long time and increases the production cost of a single product. Summary of the Invention

[0006] In order to overcome the deficiencies of the prior art, the embodiment of the present application provides a steering knuckle processing fixture. By using a reference structure composed of reference column A, reference column B and reference column C to correct the steering knuckle body to a horizontal state, and using a stabilizing structure composed of stabilizing column A, stabilizing column B and stabilizing column C to support at the edge of the steering knuckle body to ensure that the steering knuckle body is placed stably. After the steering knuckle body is movably positioned by a positioning structure composed of angular positioning column A, angular positioning column B and auxiliary positioning column, the rotating claws A, rotating claws B, rotating claws C and rotating claws D on the clamping structure press on the steering knuckle body from top to bottom, which is convenient for the fixing work of the steering knuckle body, and can achieve the technical effect of improving the processing efficiency of the steering knuckle body on the premise of shortening the loading and unloading time.

[0007] The technical solution adopted by the embodiments of this application to solve its technical problems is as follows:

[0008] A knuckle machining fixture includes a reference structure, a stabilizing structure, a positioning structure, and a clamping structure. The reference structure supports at the bottom of the knuckle body;

[0009] The stabilizing structure supports at the surface of the edge of the knuckle body;

[0010] The positioning structure supports on both sides of the knuckle body; and

[0011] The clamping structure is arranged around the reference structure and the stabilizing structure;

[0012] There are two sets of the clamping structure, positioning structure, stabilizing structure, and reference structure, and they are symmetrically arranged left and right. The knuckle body is erected on the top of the reference structure and supported by the stabilizing structure, and the supporting clamping structure clamps and fixes the knuckle body.

[0013] Preferably, the bottoms of the two sets of the clamping structure, positioning structure, stabilizing structure, and reference structure are provided with the same bottom plate. Both ends of the bottom plate are assembled and connected with side plates, and the two sets of the clamping structure, positioning structure, stabilizing structure, and reference structure are located between the two side plates.

[0014] Preferably, the reference structure includes reference column A, reference column B, and reference column C. The reference column A, reference column B, and reference column C on the two reference structures are all assembled to the top of the bottom plate. The reference column A, reference column B, and reference column C respectively support at the bottoms of three corners of the knuckle body to keep the knuckle body in a horizontal state.

[0015] Preferably, the stabilizing structure includes stabilizing column A, stabilizing column B, and stabilizing column C. The stabilizing column A, stabilizing column B, and stabilizing column C on the two stabilizing structures are all composed of a base and a vertical rod. The bases of the stabilizing column A, stabilizing column B, and stabilizing column C are all assembled to the top of the bottom plate through bolts, and the vertical rods of the stabilizing column A, stabilizing column B, and stabilizing column C are respectively adapted to support at the edges of three corners of the knuckle body.

[0016] Preferably, the positioning structure includes angular positioning column A, angular positioning column B, and auxiliary positioning column. The tops of the angular positioning column B, angular positioning column A, and auxiliary positioning column on the two positioning structures are all equipped with telescopic cylinders. The angular positioning column B and angular positioning column A on the two positioning structures are all assembled to the top of the bottom plate, and after the knuckle body is erected on the tops of the reference column A, reference column B, and stabilizing column B, they respectively assist in positioning the knuckle body from both sides.

[0017] Preferably, the auxiliary positioning post is assembled and fixed to the top of the bottom plate. The auxiliary positioning post and the angular positioning post B are respectively located on both sides of the middle part of the steering knuckle body. The oil cylinder at the top of the auxiliary positioning post presses on the side of the steering knuckle body, and the opposite side of the steering knuckle body under pressure is supported by the angular positioning post B.

[0018] Preferably, the clamping structure includes a rotary clamping jaw A, a rotary clamping jaw B, a rotary clamping jaw C, and a rotary clamping jaw D. The rotary clamping jaws A, B, C, and D on the two clamping structures are all assembled and fixed to the top of the bottom plate. The rotary clamping jaw A fixes one end of the steering knuckle body to the top of the reference post A from top to bottom, and the rotary clamping jaws B, C, and D fix the other end of the steering knuckle body to the tops of the reference post B and the reference post C from top to bottom.

[0019] Preferably, the two clamping structures share a rotary clamping jaw D, and the rotary clamping jaw D simultaneously fixes one ends of two symmetrical steering knuckle bodies from top to bottom.

[0020] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0021] First, a steering knuckle processing fixture of the present utility model corrects the steering knuckle body to a horizontal state by using a reference structure composed of a reference post A, a reference post B, and a reference post C, and uses a stabilizing structure composed of a stabilizing post A, a stabilizing post B, and a stabilizing post C to support at the edge of the steering knuckle body to ensure that the steering knuckle body is placed stably. After the steering knuckle body is movably positioned by a positioning structure composed of an angular positioning post A, an angular positioning post B, and an auxiliary positioning post, the rotary clamping jaws A, B, C, and D on the clamping structure press on the steering knuckle body from top to bottom, which is convenient for fixing the steering knuckle body. On the premise of shortening the loading and unloading time, the processing efficiency of the steering knuckle body is improved, the production input cost is reduced, and the operation is simple and convenient for employees to operate.

[0022] Second, a steering knuckle processing fixture of the present utility model can meet the clamping work of two steering knuckle bodies arranged in a left-right mirror image by setting two groups of clamping structures, positioning structures, stabilizing structures, and reference structures, further shortening the processing time of the steering knuckle body and facilitating the application of the two produced steering knuckle bodies on the same vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the overall structural schematic diagram of the present utility model;

[0024] Figure 2 is one of the connection structural schematic diagrams of the present utility model and the steering knuckle body;

[0025] Figure 3is the enlarged view of the structure at position A in the present utility model Figure 2 ;

[0026] Figure 4 is the enlarged view of the structure at position B in the present utility model Figure 2 ;

[0027] Figure 5 is the second schematic diagram of the connection structure between the present utility model and the steering knuckle main body

[0028] Figure 6 is the enlarged view of the structure at position C in the present utility model Figure 5 ;

[0029] Reference numerals: 1, Rotating clamping jaw A; 2, Reference column A; 3, Angular positioning column A; 4, Stabilizing column A; 5, Angular positioning column B; 6, Auxiliary positioning column; 7, Rotating clamping jaw B; 8, Rotating clamping jaw C; 9, Reference column B; 10, Stabilizing column B; 11, Stabilizing column C; 12, Reference column C; 13, Rotating clamping jaw D; 14, Side plate; 15, Bottom plate; 16, Steering knuckle main body Detailed implementation manners

[0030] Embodiment:

[0031] A steering knuckle processing fixture, as Figures 1-6 shown, includes a reference structure supported at the bottom of the steering knuckle main body 16, a stabilizing structure supported at the edge surface of the steering knuckle main body 16, a positioning structure supported on both sides of the steering knuckle main body 16, and a clamping structure arranged around the reference structure and the stabilizing structure. The reference structure includes reference column A 2, reference column B 9, and reference column C 12. The stabilizing structure includes stabilizing column A 4, stabilizing column B 10, and stabilizing column C 11. The positioning structure includes angular positioning column A 3, angular positioning column B 5, and auxiliary positioning column 6. The clamping structure includes rotating clamping jaw A 1, rotating clamping jaw B 7, rotating clamping jaw C 8, and rotating clamping jaw D 13 (the rotating clamping jaw is hydraulically driven, and its alternative structure includes but is not limited to a linear hydraulic cylinder);

[0032] As Figure 1 shown, the same bottom plate 15 is provided at the bottom of two groups of clamping structures, positioning structures, stabilizing structures, and reference structures. Both ends of the bottom plate 15 are assembled and connected with side plates 14;

[0033] Among them, by setting the clamping structure, positioning structure, stabilizing structure, and reference structure into two groups and arranging them symmetrically left and right, two steering knuckle main bodies 16 (in a left-right mirror image state) can be erected on the top of the reference structure and supported by the stabilizing structure, and the supporting clamping structure clamps and fixes the steering knuckle main body 16, so as to process two left and right matching steering knuckle main bodies 16, which is convenient to be applied to the same vehicle, thereby improving the processing quality and processing efficiency;

[0034] Secondly, the two sets of clamping structures, positioning structures, stabilizing structures, and reference structures are located between the two side plates 14. By assembling the reference posts A2, reference post B9, and reference post C12 on the two reference structures to the top of the bottom plate 15, when the knuckle body 16 is placed on top of the reference structure, the reference posts A2, reference post B9, and reference post C12 can respectively support the bottoms of the three corners of the knuckle body 16, thereby ensuring that the knuckle body 16 to be machined is in a horizontal state. During subsequent loading of the knuckle body 16, a unified reference can be obtained (that is, ensuring the unity of the fixture reference and the workpiece reference, and maintaining a stable coordinate relationship with the machine tool, eliminating the positioning error caused by inconsistent references);

[0035] Furthermore, as Figure 1 shown, the stabilizing posts A4, stabilizing post B10, and stabilizing post C11 on the two stabilizing structures are each composed of a base and a vertical rod. By using bolts to assemble the bases of the stabilizing posts A4, stabilizing post B10, and stabilizing post C11 to the top of the bottom plate 15, when the vertical rods of the stabilizing posts A4, stabilizing post B10, and stabilizing post C11 are adapted to support the edges of the three corners of the knuckle body 16, it can assist in stabilizing the placement of the knuckle body 16, providing a prerequisite for subsequent clamping and fixing (this is fixed positioning, effective positioning);

[0036] Further, as Figure 1 shown, the tops of the angular positioning posts B5, angular positioning post A3, and auxiliary positioning post 6 on the two positioning structures are each equipped with a telescopic oil cylinder. By assembling the angular positioning posts B5 and angular positioning post A3 on the two positioning structures to the top of the bottom plate 15, and after the knuckle body 16 is erected on the tops of the reference post A2, reference post B9, and stabilizing post B10, the oil cylinders on the angular positioning posts B5 and angular positioning post A3 can position the knuckle body 16 (this is movable positioning, incomplete positioning), respectively assisting in positioning the knuckle body 16 from both sides;

[0037] At the same time, by combining the fixed positioning method and the movable positioning method, while ensuring the continuous and stable machining positioning of the knuckle body 16, by making the adjustable angular positioning post A3 and angular positioning post B5 in the direction of the remaining degrees of freedom, the present application is made as open as possible, which can not only simplify the clamping mechanism, reduce the clamping force, but also fully expose the surface to be machined, avoiding interference during the machining process;

[0038] As Figure 1As shown, by fixing the rotary clamping jaws A1, rotary clamping jaws B7, rotary clamping jaws C8, and rotary clamping jaws D13 on the two clamping structures to the top of the bottom plate 15, when the rotary clamping jaw A1 fixes one end of the knuckle body 16 to the top of the reference column A2 from top to bottom, and the rotary clamping jaws B7, rotary clamping jaws C8, and rotary clamping jaws D13 fix the other end of the knuckle body 16 to the tops of the reference column B9 and reference column C12 from top to bottom, the knuckle body 16 can be fixed to the top of the bottom plate 15;

[0039] Meanwhile, the auxiliary positioning column 6 is assembled and fixed to the top of the bottom plate 15. The auxiliary positioning column 6 and the angular positioning column B5 are respectively located on both sides of the middle part of the knuckle body 16. By using the oil cylinder at the top of the auxiliary positioning column 6 to press the side of the knuckle body 16, after being supported by the angular positioning column B5 on the opposite side where the knuckle body 16 is pressed, the auxiliary clamping structure can fix the knuckle body 16;

[0040] In some examples, by sharing one rotary clamping jaw D13 between the two clamping structures, the rotary clamping jaw D13 can fix one end of two symmetrical knuckle bodies 16 from top to bottom simultaneously, facilitating saving one rotary clamping jaw D13 between the two groups of clamping structures, positioning structures, stabilizing structures, and reference structures.

[0041] A knuckle processing fixture of the present utility model corrects the knuckle body 16 to a horizontal state (ensuring that multiple continuously processed knuckle bodies 16 all have a unified erection reference) by adopting a reference structure composed of a reference column A2, a reference column B9, and a reference column C12, and adopts a stabilizing structure composed of a stabilizing column A4, a stabilizing column B10, and a stabilizing column C11 to support at the edge of the knuckle body 16 to ensure that the knuckle body 16 is placed stably. After the positioning structure (including the angular positioning column A3, the angular positioning column B5, and the auxiliary positioning column 6) actively positions the knuckle body 16 (controlling small deformation, ensuring the rigidity of the fixture itself, enabling the knuckle body 16 to be installed stably, stressed evenly, and clamped reliably, and minimizing the deformation caused by the cutting force and clamping force), the rotary clamping jaws A1, rotary clamping jaws B7, rotary clamping jaws C8, and rotary clamping jaws D13 on the clamping structure press the knuckle body 16 from top to bottom, facilitating the fixing work of the knuckle body 16. Compared with manually clamping the knuckle body 16, the loading and unloading time is shortened, which is beneficial to improving the processing efficiency of the knuckle body 16;

[0042] Meanwhile, by setting two groups of clamping structures, positioning structures, stabilizing structures, and reference structures, and sharing one rotary clamping jaw D13 between the two clamping structures, the clamping work of two knuckle bodies 16 arranged in a left - right mirror image can be satisfied, further shortening the processing time of the knuckle body 16, and facilitating the two produced knuckle bodies 16 to be applied in a supporting manner to the same automotive steering axle.

[0043] Finally, it should be noted that: Obviously, the above embodiments are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A steering knuckle machining fixture, characterized in that, Including: A reference structure supported at the bottom of the knuckle body (16); A stabilizing structure supported at the surface of the edge of the knuckle body (16); A positioning structure supported on both sides of the knuckle body (16); And A clamping structure arranged around the reference structure and the stabilizing structure; There are two sets of the clamping structure, positioning structure, stabilizing structure and reference structure, which are symmetrically arranged left and right. The knuckle body (16) is erected on the top of the reference structure and supported by the stabilizing structure, and the supporting clamping structure clamps and fixes the knuckle body (16); The bottoms of the two sets of the clamping structure, positioning structure, stabilizing structure and reference structure are provided with the same bottom plate (15). Both ends of the bottom plate (15) are assembled and connected with side plates (14). The two sets of the clamping structure, positioning structure, stabilizing structure and reference structure are located between the two side plates (14); The reference structure includes reference column A (2), reference column B (9) and reference column C (12). The reference column A (2), reference column B (9) and reference column C (12) on the two reference structures are all assembled to the top of the bottom plate (15). The reference column A (2), reference column B (9) and reference column C (12) respectively support at the bottoms of three corners of the knuckle body (16) to keep the knuckle body (16) in a horizontal state; The stabilizing structure includes stabilizing column A (4), stabilizing column B (10) and stabilizing column C (11). The stabilizing column A (4), stabilizing column B (10) and stabilizing column C (11) on the two stabilizing structures are all composed of a base and a vertical rod. The bases of the stabilizing column A (4), stabilizing column B (10) and stabilizing column C (11) are all assembled to the top of the bottom plate (15) by bolts. The vertical rods of the stabilizing column A (4), stabilizing column B (10) and stabilizing column C (11) are all adapted to support at the edges of three corners of the knuckle body (16); The positioning structure includes angular positioning column A (3), angular positioning column B (5) and auxiliary positioning column (6). The tops of the angular positioning column B (5), angular positioning column A (3) and auxiliary positioning column (6) on the two positioning structures are all equipped with telescopic oil cylinders. The angular positioning column B (5) and angular positioning column A (3) on the two positioning structures are all assembled to the top of the bottom plate (15). After the knuckle body (16) is erected on the tops of the reference column A (2), reference column B (9) and stabilizing column B (10), they respectively assist in positioning the knuckle body (16) from both sides; 2. The machining fixture for a knuckle according to claim 1, wherein: The auxiliary positioning column (6) is assembled and fixed to the top of the bottom plate (15). The auxiliary positioning column (6) and the angular positioning column B (5) are respectively located on both sides of the middle of the knuckle body (16). The oil cylinder on the top of the auxiliary positioning column (6) presses on the side of the knuckle body (16), and the opposite side of the knuckle body (16) under pressure is supported by the angular positioning column B (5).

3. A steering knuckle machining fixture according to claim 1, characterized in that: The clamping structure includes a rotary jaw A (1), a rotary jaw B (7), a rotary jaw C (8) and a rotary jaw D (13). The rotary jaws A (1), B (7), C (8) and D (13) on the two clamping structures are all assembled and fixed to the top of the bottom plate (15). The rotary jaw A (1) fixes one end of the steering knuckle body (16) to the top of the reference column A (2) from top to bottom. The rotary jaws B (7), C (8) and D (13) fix the other end of the steering knuckle body (16) to the tops of the reference column B (9) and the reference column C (12) from top to bottom.

4. The steering knuckle machining fixture according to claim 3, characterized in that: The two clamping structures share a rotary jaw D (13), and the rotary jaw D (13) fixes one end of two symmetrical steering knuckle bodies (16) simultaneously from top to bottom.

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