一种顶针用全线接触楔块组件

By designing a full-line contact wedge assembly, the problems of reduced contact area and uneven force distribution of the wedge assembly were solved, achieving a larger contact area and uniform force distribution, thereby improving the load-bearing capacity and service life of the wedge.

CN116816825BActive Publication Date: 2026-07-17VMTT IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
VMTT IND CO LTD
Filing Date
2023-07-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the prior art, the conical contact of the wedge block assembly becomes point contact, which leads to a reduction in contact area, damage to the lubricating oil film, severe surface damage, attenuation of the pin clamping force, and possible wedge displacement, resulting in uneven force distribution.

Method used

Design a full-line contact wedge assembly for ejector pins, including a pin, a stop, a flat wedge, and a guide sleeve. By uniformly distributing the flat wedges and fitting them against the pin, line contact is achieved, increasing the contact area, improving lubrication, and ensuring uniform force on the wedges.

Benefits of technology

It improves the load-bearing capacity of the wedge, reduces friction, improves wear, extends service life, ensures uniform wedge distribution and force distribution, and reduces errors.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明公开了一种顶针用全线接触楔块组件,包括销轴、挡块、平面楔块和导向隔套,销轴包括销轴柱面一、上锥面、销轴柱面二和下锥面,销轴穿过挡块、导向隔套设置,平面楔块设置有多块,均匀分布在挡块与导向隔套之间,且与销轴贴合。该顶针用全线接触楔块组件楔块与配合组件均为线接触,大大提高承载能力;接触面积更大,改善楔块磨损,提高使用寿命;改善润滑效果,减小摩擦力,降低误差;导向结构使楔块分布均匀,进而受力均匀增加使用寿命。
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