This section provides an overview for
jig parts as well as their applications and principles. Also, please take a look at the list of
9 jig parts
manufacturers and their
What Is a Jig Part?
A jig is a positioning device used in machine tools to produce products of the same quality in large quantities.
Jigs are also used to hold products in place. When a product is set and fixed in a jig, it is always set in the same position and the position of the product, such as in drilling, is stabilized. The jig has several parts attached to it to position the product.
Specifically, these parts include positioning pins, reference seat blocks, clampers, and rough guides.
Uses of Jig Parts
The following are examples of uses for jig parts.
- Machining Jigs
Jigs are used on machine tools such as machining centers, lathes, and milling machines to eliminate the need for operators to make positioning adjustments for each product.
- Assembly Jigs
In the assembly process, industrial robots are used to install parts such as bolts.
Unlike workers, products must be set in the same position, or else assembly defects will occur with industrial robots.
In the inspection process using image processing, the product is judged by comparing it with the registered image data.
Features of Jig Parts
Features of jig parts are explained for each jig part.
- Positioning Pin
These pins are inserted into the material hole that serves as the processing standard for the product.
Normally, there are two pins in a pair, one with a round tip and the other with a diamond tip.
The round pin determines the position of the product, and the diamond pin determines the phase.
The reason one pin is diamond-shaped is that it would be difficult to set the product if both pins were round.
- Reference Seat Block
This is a part attached to the jig parts to ensure the parallelism of the product.
It is provided to receive the position called the reference seat of the product.
Normally, three points are used to receive the product, and the reason for this is that if four or more points are used, the reference seat will not be hit.
To make sure that the product is not set incorrectly each time, some reference seats have air holes to check the pressure inside the reference seat.
This is a part that holds the product in place so that it does not move under load during processing.
Various power sources, such as springs, air, and hydraulic pressure, are used to secure the product, and those that can ensure a clamping force that can withstand the load during processing are selected.
*Including some distributors, etc.