CN205244068U - A elasticity pin for in welding frock - Google Patents

Abstract

The utility model discloses an elastic pin used in welding tooling, the elastic pin comprises a pin body (1), the center of the bottom end of the pin body (1) is provided with an axial small hole (2), and the bottom end of the pin body (1) is provided with four A uniformly distributed radial groove (3) leads to an axial small hole (2), a 30° cone angle conical surface (4) is provided on the bottom cylindrical surface of the pin body (1), and a 30° cone angle conical surface (4) is With No. 1 45° chamfer (5), the top cylindrical surface of the pin body (1) has a 16° cone angle conical surface (6), and the 16° cone angle conical surface (6) has a No. 2 45° chamfer ( 7), a V-shaped groove (8) is provided on the cylindrical surface of the pin body (1). The utility model solves the problems of large workpiece, poor positioning hole precision, difficult pin positioning, time-consuming installation, and poor reliability of positioning and clamping in the welding fixture, reduces the welding auxiliary time, improves the working efficiency of welding forming, and makes the positioning of the fixture more efficient. Reliable and stable, improve product quality.

Description

Elastic pins for use in welding fixtures

technical field

The utility model relates to tower crane components, in particular to elastic pins used in welding tooling.

Background technique

Welding fixture, also called welding fixture, is a kind of equipment used to determine the positional relationship when welding parts. Pins are commonly used positioning elements in fixtures. Pins include cylindrical pins, diamond pins, etc. Different pins play different roles in workpiece positioning and clamping. Because the volume of the parts that need to be positioned by the welding tool is often relatively large, and the positioning accuracy is not as high as that required by the jigs used in machining, so its positioning components have certain particularities.

Contents of the invention

The purpose of the utility model is to provide an elastic pin used in welding tooling to realize the positioning function, ensure reliable and stable positioning during the welding process, and reduce the difficulty of workpiece installation.

The technical solution of the utility model is: the elastic pin includes a pin body, the center of the bottom end of the pin body is provided with an axial small hole, and the bottom end of the pin body is provided with four uniformly distributed radial grooves, and the radial grooves penetrate through the axial small hole. Hole, the bottom cylindrical surface of the pin body is provided with a 30° cone angle conical surface, the 30° cone angle conical surface has a No. 1 45° chamfer, the top cylindrical surface of the pin body is provided with a 16° cone angle conical surface, There is a No. 2 45° chamfer on the angle conical surface, and a V-shaped groove is provided on the cylindrical surface of the pin body.

The utility model has the following obvious advantages: 1. The elastic pin is quickly opposite to the positioning hole of the workpiece through a 45° chamfer, a 16° cone angle conical surface and a 30° cone angle conical surface, and the positioning is stable and reliable; 2. Four radial The groove and axial small hole make the pin have a certain degree of elasticity, automatic fine-tuning, and eliminate the positioning difficulty caused by the position error of the four positioning holes on the upper slewing tower body; 3. The V-shaped groove is used as the air outlet channel when installing with the positioning hole to ensure positioning The process is successfully completed, and the efficiency of installing workpieces is improved; 4. The structure is simple, the design is scientific, the cost is low, and it is convenient for popularization and use.

Description of drawings

Fig. 1 is the application schematic diagram of the utility model.

Fig. 2 is a three-dimensional view of the welding tool in Fig. 1 .

Fig. 3 is a top view of the welding tool in Fig. 1 .

Fig. 4 is a structural schematic diagram of the utility model.

Fig. 5 is a bottom view of Fig. 4 .

In the figure: 1 pin body, 2 axial small holes, 3 radial grooves, 430° cone angle conical surface, 5 No. 1 45° chamfer, 616° cone angle conical surface, 7 No. 2 45° chamfer, 8V shape groove.

detailed description

As shown in Figure 4-5, the elastic pin includes a pin body 1, an axial small hole 2 is set in the center of the bottom end of the pin body 1, and four evenly distributed radial grooves 3 are set at the bottom end of the pin body 1, and the radial grooves 3 through the axial small hole 2, the bottom cylindrical surface of the pin body 1 is provided with a 30° cone angle conical surface 4, the 30° cone angle conical surface 4 has a No. 45° chamfer 5, the top cylindrical surface of the pin body 1 Set 16° cone angle conical surface 6, 16° cone angle conical surface 6 with No. 2 45° chamfer 7, the cylindrical surface of pin body 1 is provided with a V-shaped groove 8.

As shown in Figure 1-3, in the welding tooling for connecting lug plate forming, the lower part of the welding tooling is connected with the welded single ear plate of the welded upper support, and the upper part is connected with the double ear plate of the upper slewing tower body to be welded. The ear plates are connected; the bottom end of the elastic pin is installed in the four holes of the clamp body, and the top end of the conical surface 4 with a 30° cone angle is inserted into the four positioning holes of the main body of the upper slewing tower to determine the main body of the upper slewing tower. The relative position of the clamp body is quickly opposed to the positioning hole of the workpiece through the second 45° chamfer 7 and the 16° cone angle conical surface 6, and the automatic fine-tuning of the elastic pin eliminates the position error of the four positioning holes of the upper slewing tower body, V-shaped groove 8 As an air outlet channel when installing with the positioning hole to ensure the smooth completion of the positioning process.

The utility model effectively solves the problems of large workpiece, poor positioning hole precision, difficult pin positioning, time-consuming installation, and poor reliability of positioning and clamping in welding fixtures, reduces welding auxiliary time, improves welding forming work efficiency, and fixes positioning. More reliable and stable, improving product quality.

Claims (1)

1. The elastic pin used in welding tooling, the elastic pin includes a pin body (1), the center of the bottom end of the pin body (1) is provided with an axial small hole (2), and the bottom end of the pin body (1) is provided with four Evenly distributed radial grooves (3), the radial grooves (3) pass through the small axial holes (2), and the bottom cylindrical surface of the pin body (1) is provided with a 30° cone angle conical surface (4), with a 30° cone angle The conical surface (4) has a No. 1 45° chamfer (5), the top cylindrical surface of the pin body (1) has a 16° conical surface (6), and the 16° conical surface (6) has two No. 45° chamfering (7), a V-shaped groove (8) is provided on the cylindrical surface of the pin body (1).