Multi-angle positioning tool for rear floor front cross beam assembly

Abstract

The utility model relates to mechanical manufacturing and automation production field especially, relate to rear floor front crossbeam assembly multi -angle positioning frock, including clamp and fixed base etc., fixed base is connected in frock mesa, and the bottom of clamp is connected with the mounting seat, and the mounting seat is connected in the top of fixed base, and the bottom of mounting seat is connected with the spline block, and the inside sliding connection of fixed base has the contact board, and the top rotation is connected in the spline block of contact board, and the top of spline block is provided with ring tooth, and the recess that is cooperated with it is opened to the inner top surface of fixed base, and the first reset spring that is provided with in fixed base, and one end of first reset spring is connected with contact board, and the other end is connected in fixed base, and the locking assembly that is used for limiting mounting seat movement is set up in the front side of fixed base. Through the rotary connection design of spline block and contact board, and the spline block ring tooth and fixed base recess meshing, contact board resets after adjusting to target position, and ring tooth re-embeds recess and forms accurate positioning, realizes the quick adjustment of multi -angle clamping point and positioning precision guarantee.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing and automated production, and in particular to a multi-angle positioning fixture for the rear floor and front crossbeam assembly. Background Technology

[0002] In the fields of mechanical manufacturing and automated production, tooling fixtures are core process equipment that ensures machining accuracy and efficiency. Their design and application directly affect product quality and production costs. For example, in the production of complex structural components such as the front crossbeam assembly of the rear floor of an automobile, fixtures ensure a stable relative position between the workpiece and the machine tool / cutting tool through precise positioning and reliable clamping, thereby effectively controlling machining errors.

[0003] Currently, the positioning tools widely used in the industrial field are still mainly traditional fixed fixtures, whose typical structures include screw-fixed and position-preset types. Screw-fixed fixtures achieve rigid binding between the workpiece and the fixture body through threaded connections, suitable for single-piece or small-batch production scenarios; position-preset fixtures rely on positioning pins, stops, and other components to construct a fixed coordinate system, and rely on manual scribing or trial cutting methods to complete the initial alignment. However, the positioning accuracy and ease of operation of such traditional tools are limited by structural rigidity, and their functional expandability is also weak.

[0004] Existing technologies have significant limitations, especially in multi-angle machining scenarios, where the insufficient adaptability of fixtures is particularly prominent. Adjusting the clamping points of traditional fixtures requires removing screws, replacing positioning elements, or recalibrating the coordinate system, which is time-consuming and prone to introducing human error. Utility Model Content

[0005] To overcome the inconvenience of adjusting the clamping point, this utility model provides a multi-angle positioning fixture for the rear floor front crossbeam assembly, aiming to solve the above-mentioned shortcomings.

[0006] The multi-angle positioning fixture for the rear floor front crossbeam assembly includes a clamp and a fixed seat. The fixed seat is connected to the fixture table. The bottom of the clamp is connected to a mounting seat. The mounting seat is connected to the top of the fixed seat. The bottom of the mounting seat is connected to a spline block. A contact plate is slidably connected inside the fixed seat. The top of the contact plate is rotatably connected to the spline block. The top of the spline block is provided with ring teeth. The top surface of the fixed seat has a groove that mates with it. A first return spring is provided inside the fixed seat. One end of the first return spring is connected to the contact plate, and the other end is connected to the fixed seat. A locking component for limiting the movement of the mounting seat is provided on the front side of the fixed seat.

[0007] As a preferred embodiment of this utility model, the locking assembly includes a bending rod and a top block. The bending rod is slidably connected to the top of the fixed base, and the top surface of the bending rod is pressed against the bottom surface of the mounting base. A sliding groove is opened on the front side of the fixed base, and the top block is slidably connected in the sliding groove. An inclined surface is provided on the top front side of the top block, and the top block is pressed against the bending rod. A second return spring is fixedly connected to the front side of the fixed base, and the other end of the second return spring is fixedly connected to the bent portion at the front end of the bending rod.

[0008] As a preferred embodiment of this utility model, the outer ring of the second reset spring is provided with a telescopic pad, one end of which is connected to the front side of the fixed base, and the other end is connected to the bending clamp.

[0009] As a preferred embodiment of this utility model, a rubber pad is connected to the bottom of the top block.

[0010] As a preferred embodiment of this utility model, auxiliary plates are connected to the left and right ends of the mounting base.

[0011] As a preferred embodiment of this utility model, a bearing is provided on the top of the contact plate, the inner ring of the bearing is connected to the contact plate, and the outer ring is connected to the spline block.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. Through the rotational connection design of the spline block and the contact plate, and the meshing of the spline block ring teeth with the groove of the fixed seat, the contact plate is reset after being adjusted to the target position, and the ring teeth are re-embedded in the groove to form a precise positioning, so as to realize the rapid adjustment of multi-angle clamping points and ensure positioning accuracy.

[0014] 2. The locking component enables quick restriction and unlocking of the clamping point. Combined with the elastic reset function of the second return spring and the telescopic pad, the bent clamping rod automatically inserts into the gap and relocks after adjustment, thus achieving the purpose of convenient clamping point adjustment and efficient operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional view showing the connection relationship between the mounting base and the fixing base of this utility model.

[0017] Figure 3 This is a cross-sectional view showing the connection relationship between the bearing and the spline block of this utility model.

[0018] Figure 4 This is a cross-sectional view showing the connection relationship between the top block and the bent clamp rod of this utility model.

[0019] Wherein: 1-clamp, 2-mounting base, 3-fixed base, 4-spline block, 5-contact plate, 6-first return spring, 7-bent clamping rod, 701-slide groove, 8-top block, 9-second return spring, 10-telescopic pad, 11-rubber pad, 12-auxiliary plate, 13-bearing. Detailed Implementation

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0021] Example: Multi-angle positioning fixture for the rear floor and front crossbeam assembly, such as... Figures 1-4 As shown, the fixture includes a clamp 1, a mounting base 2, a fixed base 3, a spline block 4, a contact plate 5, a first return spring 6, and a locking assembly. The fixed base 3 is connected to the tooling table. The bottom of the clamp 1 is connected to the mounting base 2, which is connected to the top of the fixed base 3. The bottom of the mounting base 2 is connected to the spline block 4. The contact plate 5 is slidably connected inside the fixed base 3. The top of the contact plate 5 is rotatably connected to the spline block 4. The diameter of the part of the contact plate 5 inserted into the spline block 4 is increased to form an anti-dislodgement step, which ensures the flexibility of adjustment and prevents the parts from accidentally falling off. The top of the spline block 4 is provided with ring teeth. The top surface of the fixed base 3 has a groove that matches the ring teeth. When the ring teeth and the groove mesh, the stress is dispersed through the contact of the tooth surface, avoiding excessive local pressure and wear, thereby extending the service life of the spline block and the fixed base meshing structure. The fixed base 3 is provided with a first return spring 6. One end of the first return spring 6 is connected to the contact plate 5, and the other end is connected to the fixed base 3. The front side of the fixed base 3 is provided with a locking assembly for limiting the movement of the mounting base 2.

[0022] like Figure 1 and Figure 4 As shown, the locking assembly includes a bending lever 7, a top block 8, and a second return spring 9. The bending lever 7 is slidably connected to the top of the fixed base 3, and the top surface of the bending lever 7 is pressed against the bottom surface of the mounting base 2. The bent part at the front end of the bending lever 7 is designed with an arc transition to reduce the frictional resistance when in contact with the mounting base 2. A sliding groove 701 is opened on the front side of the fixed base 3, and the top block 8 is slidably connected in the sliding groove 701. An inclined surface is provided on the top front side of the top block 8, and the top block 8 is pressed against the bending lever 7. The angle of the inclined surface is 30° to ensure that the vertical thrust is effectively converted into the lateral pull. Two second return springs 9 are fixedly connected to the front side of the fixed base 3, and the other end of the second return spring 9 is fixedly connected to the bent part at the front end of the bending lever 7.

[0023] like Figure 4 As shown, it also includes a telescopic pad 10. The outer ring of the second return spring 9 is fitted with a telescopic pad 10. One end of the telescopic pad 10 is connected to the front side of the fixed base 3, and the other end is connected to the bending rod 7. The telescopic pad 10 adopts a corrugated tube structure, and the folded part is reserved with sufficient telescopic amount.

[0024] like Figure 4 As shown, it also includes a rubber pad 11. The bottom of the top block 8 is connected to the rubber pad 11, which is made of nitrile rubber. When the top block 8 slides, it comes into contact with the palm to provide cushioning, reduce the impact of operation, and at the same time take into account wear resistance to adapt to the industrial environment.

[0025] like Figure 1 As shown, it also includes an auxiliary plate 12. The auxiliary plate 12 is connected to the left and right ends of the mounting base 2. The surface of the auxiliary plate 12 is designed with anti-slip texture to increase the friction when gripping.

[0026] like Figure 3 As shown, it also includes a bearing 13. The top of the contact plate 5 is provided with a bearing 13. The inner ring of the bearing 13 is fixedly connected to the contact plate 5, and the outer ring is rotatably connected to the spline block 4. By converting sliding friction into rolling friction, the rotational resistance between the contact plate 5 and the spline block 4 is significantly reduced, and the smoothness of adjustment is improved.

[0027] Several fixed seats 3 are installed on the tooling table. When fixing the workpiece, the operator rotates the handle of the clamp 1, and the working end of the clamp 1 moves smoothly towards the surface of the workpiece in the vertical direction. The rotational force is converted into linear displacement through the mechanical transmission structure. The clamping point is automatically positioned according to the installation position of the clamp 1 to ensure that the workpiece remains stable during assembly or welding.

[0028] When the clamping position needs to be adjusted, the operator holds the auxiliary plate 12 with one hand and pushes the top block 8 upward with the other. As the top block 8 slides along the slide groove 701, the rubber pad 11 generates friction with the palm and undergoes elastic deformation. The inclined surface on the front side of the top block 8 decomposes the vertical thrust into a lateral pull, causing the bending clamp 7 to exit from the gap between the fixed seat 3 and the mounting seat 2. At this time, the second return spring 9 and the telescopic pad 10 are stretched synchronously, accumulating elastic potential energy to provide power for subsequent reset. Keeping the auxiliary plate 12 pressed down so that the bottom surface of the mounting seat 2 is in contact with the top surface of the fixed seat 3, the arc surface at the front end of the bending clamp 7 contacts the bottom surface of the mounting seat 2 to form support, preventing the mounting seat 2 from falling accidentally. When the spline block 4 rotates with the mounting seat 2, the contact plate 5 slides along the inner wall of the fixed seat 3 and compresses the first return spring 6, causing the ring teeth of the spline block 4 to disengage from the groove of the fixed seat 3, releasing the rotation restriction. At this time, the outer ring of bearing 13 rotates with spline block 4. Contact plate 5 is inserted into spline block 4 to maintain structural connection. After the clamping point of fixture 1 moves to the target position, the rotation stops. The auxiliary plate 12 is released, and the compressed first return spring 6 pushes contact plate 5 to slide upward, causing the ring teeth of spline block 4 to re-embed into the groove of fixed seat 3, forming tooth surface meshing to restrict rotation. At this time, mounting seat 2 and fixed seat 3 remain separated. The operator pushes top block 8 downward, and bending lever 7 resets under the action of second return spring 9 and inserts it between mounting seat 2 and fixed seat 3 to prevent mounting seat 2 from falling accidentally. Telescopic pad 10 maintains stable movement trajectory during spring reset, while preventing foreign objects from entering the spring working area. After top block 8 completely falls back, it is fixed by the side wall limit of slide groove 701.

[0029] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by means of equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A multi-angle positioning fixture for the rear floor and front crossbeam assembly, characterized in that: The fixture includes a clamp (1) and a fixed base (3). The fixed base (3) is connected to the tooling table. The bottom of the clamp (1) is connected to a mounting base (2). The mounting base (2) is connected to the top of the fixed base (3). The bottom of the mounting base (2) is connected to a spline block (4). A contact plate (5) is slidably connected inside the fixed base (3). The top of the contact plate (5) is rotatably connected to the spline block (4). The top of the spline block (4) is provided with ring teeth. The top surface of the fixed base (3) has a groove that matches it. A first return spring (6) is provided inside the fixed base (3). One end of the first return spring (6) is connected to the contact plate (5), and the other end is connected to the fixed base (3). A locking component for restricting the movement of the mounting base (2) is provided on the front side of the fixed base (3).

2. The multi-angle positioning fixture for the rear floor and front crossbeam assembly as described in claim 1, characterized in that: The locking assembly includes a bending lever (7) and a top block (8). The bending lever (7) is slidably connected to the top of the fixed base (3). The top surface of the bending lever (7) is pressed against the bottom surface of the mounting base (2). The fixed base (3) has a sliding groove (701) on its front side. The top block (8) is slidably connected in the sliding groove (701). The top of the front side of the top block (8) is provided with an inclined surface. The top block (8) is pressed against the bending lever (7). A second return spring (9) is fixedly connected to the front side of the fixed base (3). The other end of the second return spring (9) is fixedly connected to the bent part at the front end of the bending lever (7).

3. The multi-angle positioning fixture for the rear floor and front crossbeam assembly as described in claim 2, characterized in that: The second reset spring (9) is fitted with a telescopic pad (10) on its outer ring. One end of the telescopic pad (10) is connected to the front side of the fixed seat (3), and the other end is connected to the bent lever (7).

4. The multi-angle positioning fixture for the rear floor and front crossbeam assembly as described in claim 3, characterized in that: The bottom of the top block (8) is connected to a rubber pad (11).

5. The multi-angle positioning fixture for the rear floor and front crossbeam assembly as described in claim 4, characterized in that: The mounting base (2) is connected to auxiliary plates (12) at both ends.

6. The multi-angle positioning fixture for the rear floor and front crossbeam assembly as described in claim 5, characterized in that: The top of the contact plate (5) is provided with a bearing (13), the inner ring of the bearing (13) is connected to the contact plate (5), and the outer ring is connected to the spline block (4).

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