Manual work in cutting, mechanical assembly and repair operations is named because it is often used to clamp workpieces on the workbench. The fitter's operations mainly include chiseling, filing, sawing, marking, drilling, reaming, tapping and tapping (see thread processing), scraping, grinding, correcting, bending and riveting. Fiddler is the oldest metalworking technology in mechanical manufacturing.
Some machining that is not suitable or can't be solved by mechanical methods can be done by fitters. Such as: scribing in the process of machining parts, precision machining (such as scraping templates, making molds, etc. ), inspection and maintenance, etc.
When the machinery fails, is damaged or its accuracy drops after long-term use, it should also be maintained and repaired by the fitter.
Extended data:
Starting with the basic knowledge of fitter's operation, this paper first introduces the basic knowledge of mechanical drawing, dimensional tolerance, form and position tolerance and surface roughness, and tries to be concise and to the point.
Then, the locksmith's operating skills such as marking, sawing, chiseling, filing, scraping, grinding, bending correction, reaming, assembly and repair are described in detail. The book is simple, intuitive, easy to understand and easy to refer to, which can lay a good foundation for beginners to enter the working state and further study as soon as possible and provide useful help.
The professional knowledge such as frustration, sawing, hole machining, grinding, mold design, mold assembly and adjustment, fixture design, gear hob manufacturing technology, process analysis of typical workpieces and production of typical workpieces are integrated into the practical training operation, which fully embodies the vocational teaching characteristics of "learning by doing" and "learning by doing" and is "referring to national standards and close to professional norms".
Baidu encyclopedia-fitter