CN201711715U - Resilient clamping positioning device - Google Patents

Abstract

The utility model discloses an elastic clamping and positioning device, which comprises an elastic positioning mechanism and a pressing arm. The elastic positioning mechanism includes a positioning pin, and the positioning pin is connected with a positioning block through a spring. The positioning device can realize elastic movable positioning, thereby effectively reducing the deformation of product parts caused by stress concentration during welding, improving the stability of weldment assembly dimensions, and effectively ensuring that product parts (especially cavity-shaped weldments) The assembly size and product quality can be improved, and the product qualification rate can be improved.

Description

Elastic clamping positioning device

technical field

The utility model relates to an elastic clamping and positioning device, which belongs to the technical field of welding tooling.

Background technique

At present, the traditional tooling positioning method is rigid clamping (pressing) positioning of the cylinder. Since the positioning size does not change during welding, both sides of the product are supported by rigid clamping. Stress concentration is easy to deform during the welding process, resulting in unstable assembly dimensions. It is not easy to guarantee, which affects the product quality and reduces the product qualification rate.

Contents of the invention

The purpose of this utility model is to provide an elastic clamping and positioning device that can ensure the size of the welding assembly. This device utilizes the principle that the action force and the reaction force are equal in magnitude and opposite in direction, acting on the same straight line and Hooke's law, that is, the spring The pressure is proportional to the amount of deformation. The positioning device can realize elastic movable positioning, and effectively guarantee the assembly size and product quality of product parts (especially cavity-shaped welded parts).

The technical scheme that the utility model takes is:

The elastic clamping positioning device includes an elastic positioning mechanism and a pressing arm. The elastic positioning mechanism includes a positioning pin (locating pin A), and the positioning pin (locating pin A) is connected to a positioning block through a spring.

The positioning pin A is connected to the base through the connecting mounting block, and the positioning pin A and the connecting mounting block are fixed by lock nuts.

The positioning block includes a hollow outer casing and long bolts inside the outer casing.

One end of the pressing arm has a positioning pin (locating pin B) and the other end is connected with the cylinder.

When installing, the center line of the positioning block and the center line of the positioning pin A (guide rod) are guaranteed to be on the same straight line. The positioning pin A positions the workpiece B, and the pressing arm presses and positions the workpiece A, so that the workpieces A and B reach the assembly size. Require.

The beneficial effect of the utility model is: the positioning device can realize elastic movable positioning, thereby effectively reducing the deformation of product parts caused by stress concentration in the welding process, improving the stability of the assembly size of welded parts, and effectively ensuring that the product parts ( Especially the assembly size and product quality of cavity-shaped weldments) to improve the product qualification rate.

Description of drawings

Figure 1 is a front view of the utility model;

Figure 2 is a side view of the utility model;

Figure 3 is an enlarged cross-sectional view at H in Figure 1;

Among them: 1. Cylinder; 2. Compression arm; 3. Positioning block; 4. Positioning pin A (guide rod); 5. Connection mounting block; 6. Base; 7. Long bolt; 8. Spring; 9. Locking Nut; 10, positioning pin B. the

Detailed ways

The elastic clamping positioning device includes an elastic positioning mechanism, and the elastic positioning mechanism includes a positioning pin A 4, and the positioning pin A 4 is connected with a positioning block 3 through a spring 8. The elastic clamping positioning device also includes a compression arm 2 with a positioning pin B 10 at one end and the other end connected to the cylinder 1. Locating pin A 4 links to each other with base 6 by connecting mounting block 5, and between locating pin A 4 and connecting mounting block 5 is fixed by lock nut 9.

The positioning block 3 includes a hollow outer casing and long bolts 7 in the outer casing.

Put the workpiece A and workpiece B into the pre-adjusted positioning device for positioning, and the cylinder is clamped. According to the principle of two-force balance, the pressing force of the cylinder makes the spring in the supporting positioning block shrink, and the compression amount reaches the set value (according to the cylinder pressure When the tightening force is calculated and set), the workpiece A and workpiece B meet the assembly size requirements, and the welding operation can be carried out. Due to the balanced force on both sides of the part, it is not easy to deform, thus ensuring the stability of the assembly size after welding.

Claims (3)

1. the elasticity clamping and positioning device is characterized in that, comprises clamping arm and elastic positioning machine structure, and described elastic positioning machine structure comprises alignment pin, and alignment pin is connected to locating piece by spring.

2. elasticity clamping and positioning device according to claim 1 is characterized in that, described alignment pin links to each other with base by being connected and installed piece, alignment pin be connected and installed interblock and fix by locking nut.

3. elasticity clamping and positioning device according to claim 1 is characterized in that, described locating piece comprises the overcoat of hollow and the stay bolt in the overcoat.

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