Fixtures can be classified into three types: process assembly fixture, engineering test fixture and circuit board test fixture. Among them, the process assembly fixture includes assembly fixture, welding fixture, disassembly fixture, dispensing fixture and irradiation fixture.
Fixture, adjusting fixture and shearing fixture; The project test fixture includes life test fixture, package test fixture, environmental test fixture, optical test fixture, shielding test fixture, sound insulation test fixture, etc.
Wait; Circuit board test fixture mainly includes ICT test fixture, FCT function fixture, SMT furnace fixture, BGA test fixture, etc.
3。 Uses have been widely used before the industrial age, including mechanical fixtures, woodworking fixtures, welding fixtures, jewelry fixtures and other fields. Some types of fixtures are also called.
The main purpose of "mold" or "auxiliary tool" is to duplicate a part accurately. An obvious example is that when copying keys, the original key is usually fixed on the fixture so that the machine can borrow the original key.
Guide the appearance of the original key and copy the new key.
Many fixtures are produced for business needs, because many types of fixtures are customized, and some are designed to improve productivity, repeat specific actions, or make work more accurate. Because the fixture design is basically based on logic, similar fixtures may be produced separately because of different time and place of use.
The jig is a fixture type that can guide torsional drilling equipment or other drilling devices to the exact center position of each hole by moving the mold, and can accelerate the repeated positioning of the hole center on multiple interchangeable parts. In the practice of iron products, the typical practice is to leave hardened bushings in each hole on the drilling fixture to avoid twisting the drilling and cutting fixture.
Because numerical control machine tools (CNC) are widely used in manufacturing industry, in which servo control has the ability to automatically move the tool to the correct position, the demand for drilling fixtures (and the work of operators using drilling fixtures) is less than before.
The main purposes of the furnace fixture are: