Round pin locating device

Abstract

The invention discloses a round pin locating device. The round pin locating device comprises an expanding locating round pin, a sliding plate, a face plate and a back plate, wherein the expanding locating round pin is composed of at least three pin petals which are separated from one another, the sliding plate is fixedly connected with the roots of the pin petals, and the face plate and the back plate are located on the front side and the rear side of the sliding plate to clamp the sliding plate. The face plate is provided with a through hole, and the expanding locating round pin can penetrate through and extend out of the through hole. The face plate is in sliding connection with the sliding plate in the radial direction. A front conical head and a rear conical head are arranged on the middle portions of the two ends of the inner side of the expanding locating round pin respectively. A compression spring is arranged between the front conical head and the rear conical head. The rear side of the rear conical head is provided with a push head which is in abutting connection with the rear conical head. The push head is in key connection with the back plate. The rear side of the back plate is provided with a rotary head in threaded connection with the push head. A tensioning strip is arranged in the round pin, wherein one end of the tensioning strip is connected to the front conical head in a buckled mode, and the other end of the tensioning strip penetrates through the rear conical head and the push head and is connected to the rotary head in a buckled mode. After the pin petals are closed, the expanding pin becomes small and can stretch into a locating hole easily, and then no seams exist in the unfolding and expanding process; as a result, the locating accuracy is improved, and the installation accuracy of car door hinges and other accessories is guaranteed.

Description

technical field [0001] The invention also relates to a pin positioning device, in particular to a round pin positioning device. Background technique [0002] In manufacturing, especially in automobile manufacturing, positioning pins are usually used to insert into the positioning holes of the car body for positioning when installing accessories such as car doors. When the diameter is 25mm, the diameter of the positioning pin is 24.7mm. The resulting dimensional deviation will be transmitted to the installed accessories such as door hinges, resulting in insufficient installation accuracy of the accessories, large fluctuations in fit, difficulty in online adjustment, and sometimes off-line repairs are required. In addition, when the positioning pin is mated with the positioning hole, it is directly inserted and pulled out. After repeated use, the positioning pin will be worn out, which will affect the accuracy of its cooperation with the positioning hole, and the installation...

AI Technical Summary

Problems solved by technology

The resulting dimensional deviation will be transmitted to the installed accessories such as the door hinge, resulting in insufficient installation accuracy of the accessories, large fluctuations in fit, difficulty in online adjustment, and sometimes off-line repairs are required

In addition, when the positioning pin is mated with the positioning hole, it is directly inserted and pulled out. After repeated use, the positioning pin will be worn out, which will affect the accuracy of its cooperation with the positioning hole, and the installation accuracy of the door hinge and other accessories will require secondary adjustments after assembly. , affecting production efficiency

The fixture is usually removed during the second adjustment, and it is difficult to adjust the position of the door and the bolt with one hand.

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