First, the fitter certificate introduction:
Fitter's certificate is the professional qualification certificate of fitter's work, which is divided into five grades: fitter's primary certificate, fitter's intermediate certificate, fitter's senior certificate, fitter's technician certificate and fitter's senior technician certificate. The content of fitter's certificate is divided into fitter, die fitter, assembly fitter and machine fitter.
Second, the fitter introduction:
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.
The main task of locksmith
1, processing parts:
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.
2, equipment maintenance:
When the machinery fails, is damaged or its accuracy drops after long-term use, it should also be maintained and repaired by the fitter.
3, manufacturing and repair:
Manufacture and repair all kinds of tools, fixtures, measuring tools, molds and various professional equipment.
4. Maintenance:
In order to prevent the file from wearing too fast, do not file the hard skin of the blank or the hardened surface of the workpiece with a file, but use other tools or the indented front end and cutting teeth first. When filing, use one side of the knife first, and then use the other side when this side is dull. Because used file teeth rust easily.
When filing, make full use of the effective working face of the file to avoid local wear. The file cannot be used as a tool for disassembly, knocking and prying, so as to prevent the file from being broken due to fragile materials. When using plastic files and small files, don't use too much force to avoid file breakage.