Positioning fixture for multi-directional clamping of aluminum cast automobile parts

Abstract

This utility model discloses a positioning fixture for multi-directional clamping of automotive aluminum casting parts, including a positioning fixture body and several rotating seats fixed on the positioning fixture body. Each rotating seat is rotatably connected to a rotating clamping component via a rotating mechanism. The free end of each rotating clamping component corresponds to a clamping base two. After rotation, the free end of one of the rotating clamping components also corresponds to a clamping base one. Clamping base one and clamping base two are mounted on the positioning fixture body. Clamping component one and clamping component two are slidably connected to the positioning fixture body. The bottoms of clamping component one and clamping component two are adjusted in position on a sliding groove by a pressing mechanism. This utility model clamps automotive aluminum casting parts by setting multiple sets of rotating bases and rotating clamping components on the fixture body. By rotating the angle between the rotating clamping component and the rotating base, multiple sets of clamping bases are aligned, achieving multi-point clamping of multiple models.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixtures for automotive aluminum casting parts, specifically a positioning fixture for multi-directional clamping of automotive aluminum casting parts. Background Technology

[0002] Aluminum castings are common automotive parts, often injection molded or die-cast. After molding and cooling, they need to be polished or drilled, then encased in a shell and painted. Drilling or polishing requires the use of fixtures. Traditional fixtures cannot meet the needs of fixed-point clamping of various models and cannot flexibly adjust the angle, making them impractical.

[0003] Currently, fixtures for fixed-point clamping of automotive aluminum castings have a narrow range of applications and cannot flexibly adjust angles. For example, Chinese Patent Publication No. CN114523318B discloses a machining fixture for aluminum castings of automotive chassis brackets, including an X-axis lead screw slide and a Y-axis lead screw slide. A support sleeve is fixedly installed on the moving plate of the Y-axis lead screw slide. This invention, by designing a "+" shaped structure formed by the Y-axis lead screw slide and the X-axis lead screw slide at the bottom of the support sleeve, can drive the fixture to move on the X and Y axes. It also cooperates with the transmission component, rotation component, clamping component, and angle adjustment component, effectively solving the problem that current chassis bracket aluminum casting machining fixtures cannot change the position, clamping angle, and clamping height between the fixed end of the fixture and the part according to the different sizes, shapes, and bending degrees of the chassis bracket aluminum casting edges. This enables the grippers on the fixture to accurately clamp different aluminum castings and meet different processing requirements.

[0004] The angle between the clamping position and the angle in this scheme is a right angle or within the range of right angles, which is not well applicable to workpieces with irregular edges.

[0005] Therefore, in order to address the above problems, the applicant needs to design a multi-directional positioning fixture for clamping aluminum cast automotive parts. Utility Model Content

[0006] The purpose of this utility model is to provide a positioning fixture for multi-directional clamping of automotive aluminum casting parts, so as to solve the problem mentioned in the background art that the fixture cannot be positioned, clamped and adjusted at multiple angles when grinding or drilling automotive aluminum casting parts.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A positioning fixture for multi-directional clamping of aluminum cast automotive parts includes a positioning fixture body and several rotating seats fixed on the positioning fixture body. Each rotating seat is rotatably connected to a rotating clamping component via a rotating mechanism. The free end of each rotating clamping component corresponds to a clamping base two. After rotation, the free end of one of the rotating clamping components also corresponds to a clamping base one. The clamping base one and clamping base two are mounted on the positioning fixture body. An adjusting bolt penetrating through the free end is connected to the free end of the rotating clamping component. The adjusting bolt extends from the bottom surface of the free end of the rotating clamping component and is then connected to an anti-loosening nut. The anti-loosening nut is in close contact with the top surface of the rotating clamping component. Clamping component one and clamping component two are slidably connected on the positioning fixture body. The bottom of clamping component one and clamping component two are adjusted in position on a sliding groove by a pressing mechanism.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. This utility model clamps automotive aluminum casting parts by setting multiple sets of rotating bases and rotating clamping components on the main body of the fixture. By rotating the angle between the rotating clamping components and the rotating bases, multiple sets of clamping bases are matched to achieve multi-point support and positioning for multiple models.

[0011] 2. This utility model sets multiple sets of clamping components on the main body of the clamp, and utilizes the sliding cooperation between the clamping components and the slide groove to flexibly adjust the position of the clamping components within the path range of the slide groove, which is convenient to better adapt to the clamping of various models of the side.

[0012] 3. This utility model adjusts the position of the clamping components by setting a pressing mechanism on the side of multiple clamping components. The pressing mechanism is composed of a compression spring and a slider moving swing plate. It is simple to operate and can flexibly adjust the position and stop at a fixed point. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0014] Figure 2 This is a three-dimensional structural diagram of the rotating clamping component of this utility model;

[0015] Figure 3 This is a partial structural schematic diagram of the rotating clamping component of this utility model;

[0016] Figure 4 This is a three-dimensional exploded view of the rotating clamping component of this utility model;

[0017] Figure 5 This is a partial three-dimensional structural diagram of the clamping component two of this utility model;

[0018] Figure 6 This utility model Figure 5A magnified three-dimensional structural diagram at point A in the diagram.

[0019] In the diagram: 1. Positioning fixture body; 101. Slide groove; 102. Limiting component; 2. Rotating seat; 201. Ratchet; 3. Rotating clamping component; 301. Adjusting bolt; 302. Anti-loosening nut; 303. Bidirectional ratchet; 4. Clamping base one; 5. Clamping base two; 6. Clamping component one; 7. Clamping component two; 701. Limiting groove; 702. Compression spring; 703. Slider; 704. Push rod; 705. Fixing frame; 706. Swing plate; 8. Main body of automotive aluminum casting parts. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1-6 As shown, this utility model discloses a multi-directional positioning fixture for clamping aluminum castings for automobiles, comprising a positioning fixture body 1 and several rotating seats 2 fixed on the positioning fixture body 1. Each rotating seat 2 is rotatably connected to a rotating clamping member 3 via a rotating mechanism. The free end of each rotating clamping member 3 corresponds to a clamping base 2 5. After rotation, the free end of one of the rotating clamping members 3 also corresponds to a clamping base 1 4. The clamping base 1 4 and clamping base 2 5 are mounted on the positioning fixture body 1. The free end of the rotating clamping member 3 is connected to an adjusting bolt 301 that passes through the free end. The adjusting bolt 301 extends from the bottom surface of the free end of the rotating clamping member 3 and is then connected to an anti-loosening nut 302. The anti-loosening nut 302 is in close contact with the top surface of the rotating clamping member 3. A clamping member 1 6 and a clamping member 2 7 are slidably connected on the positioning fixture body 1. The bottoms of the clamping member 1 6 and the clamping member 2 7 are adjusted in position on the slide groove 101 by a pressing mechanism. The positioning fixture body 1 uses multiple rotating seats 2 and rotating clamping parts 3 to rotate in multiple directions to clamp the workpiece, and uses multiple clamping parts 6 and clamping parts 7 to clamp the side of the workpiece.

[0022] The positioning fixture body 1 has multiple sliding grooves 101, and clamping member 6 and clamping member 7 are slidably connected to the surface of the sliding grooves 101.

[0023] Each of the slide grooves 101 is equipped with a limiting member 102 that matches its shape, and the limiting member 102 is provided with positioning holes with equal spacing.

[0024] The rotating mechanism includes a ratchet 201 installed in the rotating seat 2 and a bidirectional ratchet 303 meshing with the ratchet 201. The bidirectional ratchet 303 is installed in the rotating clamping member 3. In this invention, the rotating seat 2 and the rotating clamping member 3 achieve counterclockwise and clockwise rotation and can stop at a fixed point via the ratchet 201 and the bidirectional ratchet 303. When rotation is actually needed, simply disengage the bidirectional ratchet 303, allowing the rotating clamping member 3 to rotate around the axis of the ratchet 201 under manual drive. After rotating to the designated position, release the bidirectional ratchet 303, which is then spring-loaded back to its original position, thus locking onto the ratchet 201 from two positions. This prevents the rotating clamping member 3 from further rotating clockwise or counterclockwise around the axis of the ratchet 201.

[0025] The pressing mechanism includes a limiting groove 701 vertically opened on the side of the clamping member 7, a slider 703 that can slide vertically along the limiting groove 701, and a top rod 704 connected to the bottom of the slider 703. The bottom end of the top rod 704 has a positioning pin that can be inserted into the positioning hole.

[0026] The pressing mechanism also includes a compression spring 702 installed at the top of the inner wall of the limiting groove 701, two fixed frames 705 fixedly connected to the side of the clamping member 7, and a swing plate 706 horizontally rotatably connected between the fixed frames 705. The lower end of the compression spring 702 is connected to the slider 703. The swing plate 706 is in the shape of a seesaw and is composed of a rotating shaft and plates of the same length on both sides. One side of the plate contacts the top rod 704 and can lift the top rod 704. A cylinder is installed at the bottom of the other side of the plate, and the cylinder can extend into the positioning hole.

[0027] In this utility model, the distance between the positioning pin and the cylinder is exactly N times the distance between the positioning hole of the limiting member 102 and the adjacent positioning hole when the cylinder is inserted into it. The advantage of this design is that when the operator observes the cylinder with the naked eye that it is located on the positioning hole, the positioning pin must also be located above a certain positioning hole. This makes it easy to determine the position of the positioning pin. When the positioning pin is inserted into the designated positioning hole, it can form a limit on the clamping member 7.

[0028] Of course, the clamping component 6 connecting the pressing mechanism also has the same structure as described above.

[0029] The diameter of the rotating shaft of the swing plate 706 matches the width of the slide groove 101, and the width of the plates on both sides is smaller than that of the slide groove 101, so that the clamping member 7 can slide along the slide groove 101 and is not easy to fall off.

[0030] The rotating clamping member 3 has a 7-shaped cross-section, and the main body 8 of the automotive aluminum casting part is placed between the rotating clamping member 3 and the clamping base 4 or the clamping base 5. The clamping base 4 and the clamping base 5 are equidistant from the rotating clamping member 3, and are both distributed within the arc-shaped rotation path range of the rotating clamping member 3.

[0031] The sliding between clamping component 7 and the slide groove 101 is achieved by pressing the swing plate 706, which uses the lever principle to lift the top rod 704 upward, and the positioning pin is pulled out from the positioning hole. This allows for manual pushing to move the component. Releasing the swing plate 706 after reaching the designated position will stop clamping component 7. The movement principle of clamping component 6 is the same.

[0032] Working principle: After the main body 8 of the aluminum cast automotive part is formed, it needs to be placed on the positioning fixture body 1 for further operations, such as drilling or grinding. The positioning fixture body 1 is used to clamp and fix it at multiple points.

[0033] The angle between the rotating seat 2 and the rotating clamping part 3 can be adjusted by the meshing ratchet 201 and the bidirectional ratchet 303, aligning with the corresponding clamping base 1 4 or clamping base 2 5. Then, the adjusting bolt 301 is rotated to the position of contacting the surface of the automotive aluminum casting part body 8, and the adjusting bolt 301 is rotated again to make the adjusting bolt 301 press against the surface of the automotive aluminum casting part body 8.

[0034] The position of clamping component 6 or clamping component 7 can also be adjusted to clamp the edge of the main body 8 of automotive aluminum casting parts of different sizes. Pressing the swing plate 706 allows clamping component 7 to slide in the slide groove 101 to a suitable position. Releasing the swing plate 706 causes it to reset downward under the action of the compression spring 702, and the positioning pin falls back into the hole of the limiting component 102, thus fixing the position of clamping component 6 and clamping component 7.

[0035] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A multi-directional positioning fixture for clamping automotive aluminum casting parts, characterized in that: The fixture includes a positioning fixture body (1) and several rotating seats (2) fixed on the positioning fixture body (1). Each rotating seat (2) is rotatably connected to a rotating clamping member (3) via a rotating mechanism. The free end of each rotating clamping member (3) corresponds to a clamping base two (5). After rotation, the free end of one of the rotating clamping members (3) also corresponds to a clamping base one (4). The positioning fixture body (1) is slidably connected to clamping member one (6) and clamping member two (7). The bottoms of clamping member one (6) and clamping member two (7) are adjusted on the slide groove (101) by a pressing mechanism.

2. A fixture for holding an aluminum automotive cast part in a plurality of orientations according to claim 1, wherein: The positioning fixture body (1) has multiple sliding grooves (101), and clamping member one (6) and clamping member two (7) are slidably connected to the surface of the sliding grooves (101).

3. A fixture for holding an aluminum automotive cast part in a plurality of orientations as recited in claim 1, wherein: Each of the slide grooves (101) is equipped with a limiting member (102) that matches its shape, and the limiting member (102) is provided with positioning holes with equal spacing.

4. The positioning fixture for multi-directional clamping of automotive aluminum casting parts according to claim 1, characterized in that: The rotating mechanism includes a ratchet (201) installed in a rotating seat (2) and a bidirectional ratchet (303) meshing with the ratchet (201), the bidirectional ratchet (303) being installed in a rotating clamp (3).

5. A positioning fixture for multi-directional clamping of automotive aluminum casting parts according to claim 1, characterized in that: The pressing mechanism includes a limiting groove (701) vertically opened on the side of the clamping member (7), a slider (703) that can slide vertically along the limiting groove (701), and a top rod (704) connected to the bottom of the slider (703). The bottom end of the top rod (704) has a positioning pin that can be inserted into the positioning hole.

6. A positioning fixture for multi-directional clamping of automotive aluminum casting parts according to claim 5, characterized in that: The pressing mechanism also includes a compression spring (702) installed at the top of the inner wall of the limiting groove (701), two fixed frames (705) fixedly connected to the side of the clamping member (7), and a swing plate (706) horizontally rotatably connected between the fixed frames (705). The lower end of the compression spring (702) is connected to the slider (703).

7. A positioning fixture for multi-directional clamping of automotive aluminum casting parts according to claim 6, characterized in that: The swing plate (706) is in the shape of a seesaw and consists of a rotating shaft and two plates of the same length on both sides. One side of the plate is in contact with the top rod (704), and the bottom of the other side of the plate is equipped with a cylinder that can extend into the positioning hole.

8. A positioning fixture for multi-directional clamping of automotive aluminum casting parts according to claim 6, characterized in that: The diameter of the rotation axis of the swing plate (706) matches the width of the slide groove (101), and the width of the plates on both sides is smaller than that of the slide groove (101).

9. A positioning fixture for multi-directional clamping of automotive aluminum casting parts according to claim 3, characterized in that: The rotating clamp (3) has a 7-shaped cross section, and the main body (8) of the automotive aluminum casting part is placed between the rotating clamp (3) and the clamping base one (4) or the clamping base two (5).

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