What Are The Types Of Precision Fixture And Jig Machining?

2026-07-09

In the semiconductor chip production process, to ensure product quality and productivity, jigs and fixtures are commonly used as auxiliary tools. Let us understand the role that precision fixture and jig machining plays in the chip manufacturing process! This article gives us an in-depth look at the classification of fixture and jig machining under different circumstances and provides a brief analysis of each.

 

Special-purpose fixtures. These fixtures are designed and manufactured specifically for a particular process step in semiconductor chip manufacturing. In production with relatively stable products and large batch sizes, various special-purpose fixtures are commonly used to achieve higher productivity and machining accuracy. However, the design cycle for special-purpose fixtures is longer and the investment is larger.

Metal Wafer Cassette

Universal fixtures. Universal fixtures refer to fixtures with standardized structures and dimensions that offer a certain degree of versatility, such as three-jaw self-centering chucks, four-jaw independent chucks, bench vises, universal dividing heads, centers, steady rests, and electronic suction cups.

 

Adjustable fixtures. Adjustable fixtures are a new type of fixture developed to address the shortcomings of universal fixtures and conventional jig and fixture machining. For workpieces of different types and sizes, they can be used by simply adjusting or replacing a few individual positioning and clamping components on the original fixture. They can generally be divided into two types: universally adjustable fixtures and group fixtures. The former has a broader range of application than universal fixtures; the latter is a type of special-purpose adjustable fixture, designed according to group technology principles and capable of machining a family of similar workpieces, thus providing good economic benefits in multi-variety, small- to medium-batch production.

Metal Wafer Cassette

Modular fixtures. Modular fixtures are a type of modularized fixture. The standard modular components have high precision and wear resistance and can be assembled into various fixtures. After use, the fixtures can be disassembled, and the components can be cleaned and stored for future assembly of new fixtures. Because modular fixtures shorten the production preparation cycle, allow for repeated reuse of components, and reduce the number of special-purpose fixtures required, they are a relatively economical fixture type in semiconductor chip manufacturing. Modular fixtures are also widely used in general machining.

 

Automatic line fixtures. Automatic line fixtures are generally divided into two types: one is the stationary fixture, which is similar to special-purpose fixtures; the other is the pallet-type fixture, which moves along with the workpiece during use, carrying the workpiece from one station to the next along the automatic line for machining. Since the cutting and forming movements differ, the connection methods between the fixtures and semiconductor equipment also vary. Their machining accuracy requirements also differ accordingly.

Metal Wafer Cassette

Based on their application, fixtures can be classified into different categories. Jig and fixture machining can also be classified by the power source for clamping: fixtures can be divided into manual fixtures, pneumatic fixtures, hydraulic fixtures, air-oil boosted fixtures, electromagnetic fixtures, vacuum fixtures, centrifugal fixtures, and so on. The different classifications and terminologies are all aimed at better serving customers across various industries.

RELATED NEWS