A high-precision positioning pin

Abstract

A high-precision positioning pin comprises a cylinder. A threaded hole communicated with the bottom surface of the cylinder is formed in the top end face of the cylinder. A stud is in screw joint with the lower end of the cylinder and is formed on a small detection column. A hexagonal groove is formed in the upper end face of the stud. A round rubber gasket sleeves the stud. The upper end face and the lower end face of the rubber gasket are leaned against the cylinder and the small detection column respectively. A screw is in screw joint with the upper end of the cylinder and is formed on a large detection column. A hexagonal boss is formed on the upper end face of the large detection column. The diameter of the small detection column is a difference value between the minimum limit size of the cylinder and the tolerance of the cylinder, and the diameter of the large detection column is a sum value of the minimum limit size of the cylinder and the tolerance of the cylinder. The high-precision positioning pin has the advantages that the detection columns are arranged on the positioning pin additionally, so that whether or not the positioning pin can be matched with a mounting hole thereof precisely is detected; the precisely matched positioning pin can have high vibration resistance performance, thereby being prevented from vibrating and separating from the mounting hole.

Description

[0001] Technical field: [0002] The invention relates to the technical field of pin shafts, in particular to a high-precision positioning pin. [0003] Background technique: [0004] Locating pins are common connectors in molds and mechanical equipment, and their main function is to limit the free movement between items; they are placed in the holes of parts that need to be fastened or connected. However, during the operation of existing mechanical equipment, vibration will inevitably occur, and the existing positioning pins are often ordinary cylindrical pins, which can only limit their radial square movement, but cannot limit their axial square movement. Movement, so that the mechanical vibration increases, and when the vibration time is prolonged, the positioning pin will slowly vibrate out of the positioning hole on the item until it completely breaks away from the positioning hole, which will cause mechanical equipment to malfunction and affect the function of the mechani...

AI Technical Summary

Problems solved by technology

However, during the operation of existing mechanical equipment, vibration will inevitably occur, and the existing positioning pins are often ordinary cylindrical pins, which can only limit their radial square movement, but cannot limit their axial square movement. Movement, so that the mechanical vibration increases, and when the vibration time is prolonged, the positioning pin will slowly vibrate out of the positioning hole on the item until it completely breaks away from the positioning hole, which will cause mechanical equipment to malfunction and affect the function of the mechanical equipment. The matching precision with its mounting hole can effectively improve the performance of anti-vibration

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