Fitters mainly use vices, various hand tools and some mechanical tools to complete the processing of certain parts, the assembly and commissioning of machines or components, and the maintenance and repair of various types of machinery.
Its basic operations include part measurement, scribing, chiseling, sawing, filing, drilling, tapping and threading.
It has the characteristics of simple tools, flexible processing style, convenient operation and wide adaptation.
Fitter table
The fitter's table, also known as the clamp table, is available for single and multi-person use, and is generally made of wood or steel.
It is required to be stable and sturdy, with a height of 800 900mm, and the length and width are determined according to the needs of the work.
The height of the jaws should be exactly the height of the person's elbow, as shown in the figure. The tongs must be equipped with a protective net, and its drawer is used to place work and measuring tools.
Vice. It is used to clamp the workpiece, and its specifications are expressed by the width of the jaw, and there are three types: 100mm, 125mm, and 150mm.
The correct use and maintenance of the vise is as follows:
The vise must be correctly and securely mounted on the vise.
The clamping of the workpiece should be in the middle of the vise jaw as far as possible, so that the force of the jaws is balanced, and the clamped workpiece should be stable and reliable.
The workpiece can only be clamped by hand gripping handle, and the handle cannot be connected with a sleeve to extend the handle afterburner or hit the handle with a hand hammer to prevent damage to the vise parts.
Do not tap on the surface of the movable forceps to avoid damaging the fit with the fixed forceps.
When machining, it is best to use the force in the direction of the fixed clamp body.
The screw rod and nut should be kept clean and lubricated frequently to improve their service life.
Bench drills. A bench drill is a small machine tool that is mainly used for drilling holes. Generally, it is a manual feed, and its speed is adjusted by the pulley.
Bench drills are flexible and can be used in many applications.
Generally, the drilling diameter of bench drills is less than
Familiar with the fitter's working site, tidy up and place the fitter's practical training used in the work and measuring tools (note that the measuring tools can not be placed together with tools or workpieces).
Disassemble and assemble the vise, familiarize yourself with its structure, and practice clamping the workpiece on the vise.