Automobile wheel support machining clamp

Abstract

The utility model discloses an automobile wheel support machining clamp, and relates to the technical field of automobile accessory machining. The positioning frame is connected to the clamp base, and the wheel support is clamped through the positioning frame; the positioning frame comprises an inner positioning frame body and an outer positioning frame body, a rotating hook is connected to the interior of the inner positioning frame body, and the rotating hook can be driven by the telescopic rod to turn over. According to the automobile wheel support machining clamp, due to the fact that the inner positioning frame and the outer positioning frame are matched with each other, the inner edge and the outer edge of the wheel support are fixed at the same time, in addition, the wheel support is fixed in a step-by-step fixing mode, it is guaranteed that the wheel support is in a fixed state all the time when replaced or placed, and therefore the machining efficiency is improved. The technical problem that when an existing wheel support clamp is used, the clamping stability is insufficient is effectively solved, then stable clamping of a wheel support is achieved, and meanwhile the safety of the wheel support during installation or replacement can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, and particularly relates to a processing fixture for an automobile wheel bracket. Background Technique

[0002] An automobile steering knuckle is one of the core components in an automobile chassis and is a key component related to automobile safety. During the normal driving process of an automobile, it is mainly used to bear external loads to ensure the safe and stable operation of the automobile. Therefore, in the production process of an automobile wheel bracket, high technical requirements are put forward for its processing quality and performance and other indicators. It is required that the wheel bracket has high strength and also meets high dimensional requirements.

[0003] At present, a Chinese patent with the patent application number of "CN201821827037.1" discloses an automobile wheel bracket fixture, belonging to the technical field of automobile parts, which is used to solve the problems of multiple clamping of workpieces, affecting the positioning accuracy of workpieces, wasting time, and reducing the quality of workpieces during the production and processing process. The utility model has a main body, and a workpiece placement area matching the workpiece is arranged on the main body; the support points are fixedly connected to the main body in the workpiece placement area and at the non-processing area at the edge of the workpiece, and contact the lower surface of the workpiece. The pressing block has a special-shaped arm that avoids the processing area of the workpiece. One end of the special-shaped arm is hinged to the main body, and the other end presses the workpiece against the support point. A limiting block is also fixedly connected to the main body. The limiting block is of a square structure, and an arc-shaped notch is arranged at the intersection of the two side edges on the side relative to the workpiece placement area. The notch contacts the side surface of the workpiece. Although it can play a certain clamping role, its stability is poor, resulting in easy loosening of the workpiece after being clamped.

[0004] However, during the implementation of the above technical solution, it is found that at least the following technical problems exist:

[0005] Insufficient clamping stability: When the existing wheel bracket fixture is in use, the position of the wheel bracket is mainly restricted by the limiting block, and then the wheel bracket is fixed by pressing the pressing block on the wheel bracket. However, during the placement of the wheel bracket and the fixing of the pressing block, the wheel bracket is only "placed" on the fixture, and there is no tight connection between the two. As a result, during this period, if the wheel bracket shakes or collides, the subsequent fixing accuracy cannot be guaranteed, and it is also easy to fall off. Therefore, we propose a processing fixture for an automobile wheel bracket. Content of the Utility Model

[0006] (1) Technical problems to be solved

[0007] In view of the deficiencies of the prior art, the present utility model provides a processing fixture for an automotive wheel bracket. By adopting a method of mutual cooperation between an inner positioning frame and an outer positioning frame, the outer edge and the inner edge of the wheel bracket are fixed simultaneously. In addition, when the wheel bracket is placed, a step-by-step fixing method is used for fixing, which can ensure that the wheel bracket is always in a fixed state during replacement or placement. Therefore, the technical problem of insufficient clamping stability of the existing wheel bracket fixture during use is effectively solved, and thus the stable clamping of the wheel bracket is achieved. At the same time, the safety of the wheel bracket during installation or replacement can be improved, and the technical problem of insufficient clamping stability of the existing wheel bracket fixture during use is solved.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present utility model is realized through the following technical solutions:

[0010] A processing fixture for an automotive wheel bracket, the fixture comprising: a fixture base;

[0011] A positioning frame, connected to the fixture base, and clamping the wheel bracket through the positioning frame;

[0012] Among them, the positioning frame includes an inner positioning frame and multiple outer positioning frames. The inner positioning frame includes a cylindrical mounting seat and a telescopic rod embedded inside the mounting seat. The telescopic end of the telescopic rod is connected with a connecting member. One end of the rotating hook is hinged to the connecting member, and the center of the rotating hook is hinged to the positioning block at the top of the outer sleeve through a connecting rod. The other end of the rotating hook is a free end, so that when the telescopic rod expands and contracts, the rotating hook can be driven to flip;

[0013] The outer positioning frame includes a rotary pressing cylinder, and a limiting block is connected to the output shaft of the rotary pressing cylinder, so that the limiting block can be driven to rotate and press down at the same time. The limiting block is in a "Z" shape, and an extrusion head is connected to the end of the limiting block away from the rotary pressing cylinder. When the wheel bracket is fixed, the extrusion head at the end of the limiting block can press on the top of the wheel bracket, thereby fixing the edge of the wheel bracket.

[0014] When the wheel bracket is placed on the fixture base, the inner positioning frame passes through the through hole at the center of the wheel bracket, and the rotating hook inside the inner positioning frame corresponds to the inner edge of the through hole of the wheel bracket; the outer positioning frames are distributed on the outer edge of the wheel bracket, so as to achieve the effect of fixing the inside and outside of the wheel bracket simultaneously.

[0015] Preferably, the telescopic rod is embedded and installed at the top of the outer sleeve, and the telescopic end of the telescopic rod is connected with a connecting member. The end of the rotating hook is hinged to the connecting member, and the center of the rotating hook is hinged to the positioning block at the top of the outer sleeve through a connecting rod;

[0016] When the telescopic rod extends, the rotating hook rotates downward around its hinge point with the connecting rod and presses on the wheel bracket;

[0017] When the telescopic rod contracts, the rotating hook rotates upward and is stored inside the inner positioning frame.

[0018] Preferably, a plurality of limiting bases are installed on the top of the fixture base, and the limiting bases correspond to the rotating hooks on the inner positioning frame one by one. In this way, when the wheel bracket is installed on the fixture base, the wheel bracket can be clamped from both the upper and lower directions.

[0019] Preferably, an end cover is installed on the top of the outer sleeve, and the outer wall of the end cover has a notch. In this way, the rotating hook can rotate in the notch of the end cover and finally be stored in the end cover, so that the rotating hook will not affect the wheel bracket when the wheel bracket is taken and placed, which is convenient for the replacement and installation of the wheel bracket.

[0020] Preferably, the outer positioning frame includes a rotating and pressing cylinder, and a limiting block is connected to the output shaft of the rotating and pressing cylinder, so that it can drive the limiting block to rotate and press downward at the same time. The limiting block is in a "Z" shape, and an extrusion head is connected to the end of the limiting block away from the rotating and pressing cylinder. When the wheel bracket is fixed, the extrusion head at the end of the limiting block can press on the top of the wheel bracket, so as to fix the edge of the wheel bracket.

[0021] Preferably, a limiting baffle is installed on the top of the fixture base, and the position of the wheel bracket when placed is restricted by the limiting baffle and the inner positioning frame.

[0022] Preferably, an auxiliary support cylinder and a plurality of auxiliary support rods are installed at the bottom of the fixture base. The auxiliary support rods and the auxiliary support cylinder are used as the support points of the wheel bracket. That is, according to the contour of the side of the wheel bracket facing the fixture base, the auxiliary support rods are installed at the corresponding points of the wheel bracket. When the wheel bracket is installed, the fixture base fits with the wheel bracket through the auxiliary support rods, and no other positions fit with the wheel bracket. In addition, due to the irregular shape of the wheel bracket and the center of gravity shifting to one side, in order to keep the center of gravity of the wheel bracket stable, an auxiliary support cylinder is installed on the fixture base. In this way, after the wheel bracket is placed, it can be pushed to the other side, so as to adjust the overall center of gravity and make the bottom of the wheel bracket fit with the auxiliary support rods on the fixture base.

[0023] (III) Beneficial effects

[0024] 1. Since the inner positioning frame and the outer positioning frame are used in cooperation to fix the outer edge and the inner edge of the wheel bracket simultaneously, and in addition, when the wheel bracket is placed, it can be fixed by a step-by-step fixing method, it can ensure that the wheel bracket is always in a fixed state when it is replaced or placed. Therefore, it effectively solves the technical problem of insufficient clamping stability of the existing wheel bracket fixture during use, and further realizes the stable clamping of the wheel bracket, and at the same time improves the safety of the wheel bracket during installation or replacement.

[0025] 2. Since the rotary pressing cylinder is used to drive the limiting block to rotate and expand and contract, and then the telescopic rod is used to drive the rotating hook to rotate, it can be retracted when the wheel bracket is placed, avoiding occupying the space when the wheel bracket is placed, and at the same time can be used as a limiting structure to limit the position of the wheel bracket; and it expands when the wheel bracket is fixed to fix the wheel bracket, thereby improving the stability of the fixture for fixing the wheel bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it in accordance with the content of the specification, the following will be described in detail with reference to the preferred embodiments of the present invention and the accompanying drawings.

[0027] Figure 1 It is the overall structure diagram of the embodiment of the present invention;

[0028] Figure 2 It is the separation structure diagram of the wheel bracket and the fixture base in the embodiment of the present invention;

[0029] Figure 3 It is the structure diagram of the inner positioning frame in the embodiment of the present invention;

[0030] Figure 4 It is the exploded structure diagram of the inner positioning frame in the embodiment of the present invention;

[0031] Figure 5 It is the internal structure diagram of the inner positioning frame in the embodiment of the present invention;

[0032] Figure 6 It is the dynamic motion diagram of the inner positioning frame in the embodiment of the present invention;

[0033] Figure 7 It is the structure diagram of the outer positioning frame in the embodiment of the present invention;

[0034] Figure 8 It is the top view of the fixture base in the embodiment of the present invention;

[0035] Figure 9 It is one of the installation schematic diagrams of the fixture base in the embodiment of the present invention;

[0036] Figure 10 This is the second installation schematic diagram of the fixture base in the embodiment of the present utility model;

[0037] Figure 11 This is the third installation schematic diagram of the fixture base in the embodiment of the present utility model.

[0038] Legend Explanation:

[0039] 1. Fixture base;

[0040] 2. Inner positioning frame; 21. Mounting seat; 22. Outer sleeve; 23. Telescopic rod; 24. Connecting piece; 25. Positioning block; 26. Rotating hook; 27. Link rod; 28. End cover; 29. Limiting base;

[0041] 3. Outer positioning frame; 31. Rotary pressing cylinder; 32. Limiting block; 33. Extrusion head;

[0042] 4. Limiting baffle;

[0043] 5. Auxiliary support rod;

[0044] 6. Wheel bracket;

[0045] 7. Auxiliary support cylinder;

[0046] 8. Positioning pin. Specific Embodiment

[0047] In the embodiment of the present application, by providing a fixture for machining an automotive wheel bracket, the technical problem of insufficient clamping stability in the existing wheel bracket fixture during use is solved. When the existing wheel bracket fixture is used, due to the mutual cooperation of the inner positioning frame and the outer positioning frame, the outer edge and the inner edge of the wheel bracket are fixed simultaneously. In addition, when the wheel bracket is placed, a step-by-step fixing method can be adopted for fixing, which can ensure that the wheel bracket is always in a fixed state during replacement or placement, thereby realizing stable clamping of the wheel bracket and improving the safety during installation or replacement of the wheel bracket.

[0048] Embodiment: The technical solution in the embodiment of the present application is to solve the technical problem of insufficient clamping stability in the existing wheel bracket fixture during use. The general idea is as follows:

[0049] In view of the problems existing in the prior art, the utility model provides a processing fixture for an automobile wheel bracket. The fixture includes a fixture base 1 for carrying the wheel bracket 6 and a positioning frame (composed of an inner positioning frame 2 and an outer positioning frame 3) installed on the fixture base 1, and the positioning frame clamps the wheel bracket 6. In order to fit the contour of the wheel bracket 6, we use the auxiliary support rod 5 and the auxiliary support cylinder 7 as the support points of the wheel bracket 6. That is, according to the contour of the side of the wheel bracket 6 facing the fixture base 1, the auxiliary support rod 5 is installed at each point corresponding to the wheel bracket 6. When the wheel bracket 6 is installed, the fixture base 1 fits with the wheel bracket 6 through the auxiliary support rod 5, and no other positions fit with the wheel bracket 6. In addition, due to the irregular shape of the wheel bracket 6 and the center of gravity shifting to one side, in order to keep the center of gravity of the wheel bracket 6 stable, an auxiliary support cylinder 7 (located in the direction of the center of gravity of the wheel bracket 6) is installed on the fixture base 1. In this way, after the wheel bracket 6 is placed, it can be pushed to the other side, thereby adjusting the overall center of gravity so that the bottom of the wheel bracket 6 can fit with the auxiliary support rod 5 on the fixture base 1, as Figure 2 shown.

[0050] The positioning frame (installed on the fixture base 1 and clamping the wheel bracket 6 through the positioning frame); the positioning frame includes an inner positioning frame 2 and multiple outer positioning frames 3. As Figure 1 and Figure 2 shown, when the wheel bracket 6 is placed on the fixture base 1, the inner positioning frame 2 passes through the through hole at the center of the wheel bracket 6, and the rotating hook 26 inside the inner positioning frame 2 corresponds to the inner edge of the through hole of the wheel bracket 6; the outer positioning frames 3 are distributed on the outer edge of the wheel bracket 6, so as to achieve the effect of simultaneously fixing the inside and outside of the wheel bracket 6.

[0051] The inner positioning frame 2, the inner positioning frame 2 includes a cylindrical mounting seat 21 and a telescopic rod 23 embedded and installed inside the mounting seat 21. The telescopic end of the telescopic rod 23 is connected with a connecting piece 24. One end of the rotating hook 26 is hinged with the connecting piece 24, and the center of the rotating hook 26 is hinged with the positioning block 25 at the top of the outer sleeve 22 through a connecting rod 27. The other end of the rotating hook 26 is a free end, so that when the telescopic rod 23 expands and contracts, the rotating hook 26 can be driven to flip.

[0052] When the telescopic rod 23 extends (that is, when the inner positioning frame 2 clamps the wheel bracket 6), the connecting piece 24 at its end moves upward. Since the connecting piece 24 is hinged with the end of the rotating hook 26 and the middle of the rotating hook 26 is hinged with the positioning block 25 through the connecting rod 27, when the connecting piece 24 moves upward, the rotating hook 26 hinged with the connecting piece 24 rotates synchronously, as Figure 6As shown, at this time, under the action of the connecting member 24, the rotating hook 26 rotates downward about the hinge point between the rotating hook 26 and the connecting rod 27, pressing on the wheel bracket 6, thereby fixing the inner wall of the through hole of the wheel bracket 6.

[0053] On the contrary, in order to fix and limit the outer edge of the wheel bracket 6, a plurality of limit bases 29 are installed on the top of the fixture base 1, and the limit bases 29 correspond one by one to the rotating hooks 26 on the inner positioning frame 2. In this way, when the wheel bracket 6 is installed on the fixture base 1, the wheel bracket 6 can be clamped from both the upper and lower directions.

[0054] When the telescopic rod 23 contracts (that is, when the inner positioning frame 2 releases the wheel bracket 6), the rotating hook 26 rotates upward. Since the top of the outer sleeve 22 is provided with an end cap 28, and the outer wall of the end cap 28 has a notch, the rotating hook 26 can rotate in the notch of the end cap 28 and finally be received in the end cap 28. When the wheel bracket 6 is taken and placed, the rotating hook 26 will not affect it, facilitating the replacement and installation of the wheel bracket 6.

[0055] The outer positioning frame 3 (there are multiple of them, distributed at the edge position of the wheel bracket 6), the outer positioning frame 3 includes a rotary pressing cylinder 31, and a limit block 32 is connected to the output shaft of the rotary pressing cylinder 31, so it can drive the limit block 32 to rotate and press downward at the same time. The limit block 32 is in a "Z" shape, and an extrusion head 33 is connected to the end of the limit block 32 far from the rotary pressing cylinder 31. When the wheel bracket 6 is fixed, the extrusion head 33 at the end of the limit block 32 can press on the top of the wheel bracket 6, thereby fixing the edge of the wheel bracket 6, as Figure 9 shown.

[0056] The outer positioning frame 3 is divided into two states: one is the open state, that is, controlling the rotary pressing cylinder 31 to extend, driving the limit block 32 to move upward and rotate away from the wheel bracket 6 at the same time, so as to avoid the installation path of the wheel bracket 6; on the contrary, the other is the closed state, controlling the rotary pressing cylinder 31 to contract, driving the limit block 32 to move downward and rotate toward the wheel bracket 6 at the same time, so as to press on the wheel bracket 6.

[0057] In order to limit the placement position of the wheel bracket 6, a limit baffle 4 and two positioning pins 8 are installed on the top of the fixture base 1. The positioning pins 8 are located on both sides of the limit baffle 4. When the wheel bracket 6 is installed, the positioning pins 8 on the fixture base 1 are inserted into the process holes on the wheel bracket 6, thereby limiting the position of the wheel bracket 6, and when the wheel bracket 6 is installed, the limit baffle 4 cooperates with the inner positioning frame 2 to limit the position of the wheel bracket 6 when it is placed.

[0058] In the specific implementation process, when the wheel bracket 6 is installed, the robot is controlled to place the wheel bracket 6 on the fixture base 1, and the through hole on the top of the wheel bracket 6 corresponds to the inner positioning frame 2 on the fixture base 1, as shown in FIG. Figures 9 to 10 shown.

[0059] The inner positioning frame 2 is controlled to start and the telescopic rod 23 is controlled to extend. When the telescopic rod 23 is extended (i.e., when the inner positioning frame 2 clamps the wheel bracket 6), the connecting member 24 at its end moves upward. Since the connecting member 24 is hinged to the end of the rotating hook 26, and the middle part of the rotating hook 26 is hinged to the positioning block 25 through the connecting rod 27, when the connecting member 24 moves upward, the rotating hook 26 hinged to the connecting member 24 rotates synchronously, as shown in FIG. Figure 6 As shown, at this time, the swivel hook 26 rotates downward with the hinge point between the swivel hook 26 and the connecting rod 27 as the axis under the action of the connecting member 24, and presses on the wheel bracket 6, thereby fixing the inner wall of the through hole of the wheel bracket 6.

[0060] At this time, the manipulator holding the wheel bracket 6 is released, and the outer positioning frame 3 is opened again, and the rotary pressing cylinder 31 is controlled to contract, driving the limit block 32 to move downward and rotate toward the wheel bracket 6, thereby pressing on the wheel bracket 6, thereby ensuring the stability of the wheel bracket 6 during the entire clamping process. Figure 11 shown.

[0061] On the contrary, the rotation of the pressing cylinder 31 is controlled to extend, driving the limit block 32 to move upward and rotate in a direction away from the wheel bracket 6, thereby avoiding the installation path of the wheel bracket 6.

[0062] Then, the inner positioning frame 2 is opened to control the telescopic rod 23 to retract. When the telescopic rod 23 retracts (that is, when the inner positioning frame 2 releases the wheel bracket 6), the swivel hook 26 rotates upward. Since the top of the outer sleeve 22 is installed with an end cover 28, and the outer wall of the end cover 28 has a notch, the swivel hook 26 can rotate in the notch of the end cover 28 and finally be stored in the end cover 28. The swivel hook 26 will not affect the wheel bracket 6 when it is taken out and placed, so that the replacement and installation of the wheel bracket 6 are convenient.

[0063] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all possible embodiments. However, any obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A vehicle wheel bracket processing fixture, characterized in that: The fixture includes: Clamp base (1); A positioning frame is connected to the clamp base (1) and clamps the wheel bracket (6) through the positioning frame; The positioning frame comprises an inner positioning frame (2) and a plurality of outer positioning frames (3); a rotating hook (26) is connected to the interior of the inner positioning frame (2), and the rotating hook (26) can be turned over under the drive of the telescopic rod (23); When the wheel bracket (6) is placed on the fixture base (1), the inner positioning frame (2) passes through the through hole at the center of the wheel bracket (6), and the rotating hook (26) inside the inner positioning frame (2) corresponds to the inner edge of the through hole of the wheel bracket (6); the outer positioning frame (3) is distributed on the outer edge of the wheel bracket (6).

2. The automobile wheel bracket processing fixture according to claim 1, characterized in that: The telescopic rod (23) is embedded in the top of the outer sleeve (22), and the telescopic end of the telescopic rod (23) is connected to the connecting piece (24), the end of the rotating hook (26) is hinged to the connecting piece (24), and the center of the rotating hook (26) is hinged to the positioning block (25) at the top of the outer sleeve (22) through a connecting rod (27); When the telescopic rod (23) is extended, the rotating hook (26) rotates downward with the hinge point between the rotating hook and the connecting rod (27) as the axis, and presses on the wheel bracket (6); When the telescopic rod (23) contracts, the rotating hook (26) rotates upward and is stored inside the inner positioning frame (2).

3. The automobile wheel bracket processing fixture according to claim 2, characterized in that: A plurality of limiting bases (29) are installed on the top of the clamp base (1), and the limiting bases (29) correspond one to one with the rotating hooks (26) on the inner positioning frame (2); When the wheel bracket (6) is mounted on the fixture base (1), the position limiting base (29) and the rotating hook (26) are respectively located on the upper and lower sides of the wheel bracket (6).

4. The automobile wheel bracket processing fixture according to claim 2, characterized in that: An end cover (28) is installed on the top of the outer sleeve (22), and a notch is opened on the outer wall of the end cover (28), and the notch on the end cover (28) corresponds to the rotating hook (26) on the outer sleeve (22); When the telescopic rod (23) is retracted, the rotating hook (26) is stored in the end cover (28).

5. The automobile wheel bracket processing fixture according to any one of claims 1 to 4, characterized in that: The outer positioning frame (3) includes a rotary pressing cylinder (31), and a limiting block (32) is connected to the output shaft of the rotary pressing cylinder (31); when the rotary pressing cylinder (31) is in use, the limiting block (32) is driven to press on the wheel bracket (6).

6. The automobile wheel bracket processing fixture according to claim 5, characterized in that: The limit block (32) is in a "Z" shape, and one end of the limit block (32) away from the rotary pressing cylinder (31) is connected to an extrusion head (33); when the wheel bracket (6) is fixed, the extrusion head (33) at the end of the limit block (32) fits with the top of the wheel bracket (6).

7. The automobile wheel bracket processing fixture according to claim 1, characterized in that: A limit baffle (4) is installed on the top of the clamp base (1), and the position of the wheel bracket (6) when placed is limited by the limit baffle (4) and the inner positioning frame (2).

8. The automobile wheel bracket processing fixture according to claim 1, characterized in that: An auxiliary support cylinder (7) and a plurality of auxiliary support rods (5) are installed at the bottom of the clamp base (1), and the center of gravity of the wheel bracket (6) when placed is adjusted by the auxiliary support cylinder (7); When the wheel bracket (6) is mounted on the fixture base (1), the fixture base (1) is fitted with the bottom of the wheel bracket (6) via the auxiliary support rod (5) and the auxiliary support cylinder (7) thereon.

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