In the field of machining industry, some complex parts are difficult to process, and auxiliary fixture will be used. There are many kinds of auxiliary fixtures to be contacted. Let’s see what the difference is
First of all, understand the general fixture: General fixture refers to the standardized fixture that can be used to process different workpieces within a certain range. For example, three jaw chuck and four jaw single action chuck on lathe, flat tongs, dividing head and rotary table on milling machine, etc. This kind of fixture is usually produced by professional factories and is often provided to users as machine tool accessories. It is characterized by wide adaptability and low production efficiency. It is mainly suitable for the production and processing of single and small batch parts; Special fixture: special fixture refers to the fixture specially designed for a certain process of a workpiece. It is characterized by compact structure, fast, convenient and labor-saving operation, which can ensure high machining accuracy and production efficiency of parts, but the design and manufacturing cycle is longer and the manufacturing cost is higher. When the product is changed, the fixture will be scrapped because it can no longer be used. It is only suitable for the production and processing with fixed products and large batch; Universal adjustable fixture and group fixture: its feature is that some components of the fixture can be replaced and some devices can be adjusted to adapt to the processing of different parts. The fixture used for group machining of similar parts is called group fixture. Compared with the group fixture, the general adjustable fixture is not very clear about the processing object and has a wider range of application.
There are modular fixture: modular fixture is a fixture assembled by a set of pre manufactured standard components and parts according to the processing requirements of mechanical parts. It is made by professional manufacturers. It is characterized by flexibility, versatility, short manufacturing cycle and repeated use of components. It is especially suitable for trial production of new products and small batch production and processing of single piece. Accompanying fixture: accompanying fixture is a kind of fixture used in automatic line. The fixture not only plays the role of clamping the workpiece, but also integrates with the workpiece to move from one station to the next along the automatic line for different processes.
In the process of machining mechanical parts, according to the classification of machine tools used: due to the different working characteristics and structural forms of all kinds of machine tools, different requirements are put forward for the structure of fixtures. According to the different machine tools used, fixtures can be divided into: lathe fixture, milling fixture, drilling fixture, boring fixture, grinder fixture, gear fixture and other machine fixture. According to the classification of clamping power source: according to the different clamping power source used by the fixture, it can be divided into: manual fixture, pneumatic fixture, hydraulic fixture, gas-liquid fixture, electric fixture, magnetic fixture, vacuum fixture, etc.
The above is the mechanical parts processing auxiliary fixture introduction, thank you for sharing!
ken. tang@chengcg.com
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