<1> Most of the mechanical operations are commonly performed on five basic machine tools:www.mapeng.net 马棚万机械资讯

1. The drill presswww.mapeng.net 马棚万机械资讯

2. The lathewww.mapeng.net 马棚万机械资讯

3. The shaper or planerwww.mapeng.net 马棚万机械资讯

4. The milling machinewww.mapeng.net 马棚万机械资讯

5. The grinderwww.mapeng.net 马棚万机械资讯

Drillingwww.mapeng.net 马棚万机械资讯

<2> Drilling is performed with a rotating tool called a drill. Most drilling in metal is done with twist drill .The machine used for drilling is called a drill press. Operations such as reaming and tapping are also classified as drilling. Reaming consists of reaming a small amount of metal from a hole already drilled. Tapping is the process of cutting a thread inside a hole so that a cap screw or bolt may be threaded into it.www.mapeng.net 马棚万机械资讯

Turning and Boringwww.mapeng.net 马棚万机械资讯

<3> The lathe is commonly called the father of the entire machine tool family. For turning operations, the lathe uses a single-point cutting tool which removes metal as it travels past the revolving workpiece. Turning operations are required to make many different cylindrical shapes, such as axes, gear blanks, pulleys, and threaded shafts. Boring operations are performed to enlarge, finish, and accurately locate holes.www.mapeng.net 马棚万机械资讯

Millingwww.mapeng.net 马棚万机械资讯

<4> Mining removes metal with a revolving, multiple cutting edge tool called milling cutter. Milling cutters are made in many styles and sizes. Some have as few two cutting edges and others have 30 or more. Milling can produce flat or angled surfaces, groves, slots, gear teeth, and other profiles depending on the shape of the cutters being used.www.mapeng.net 马棚万机械资讯

Shaping and Planningwww.mapeng.net 马棚万机械资讯

<5> Shaping and planning produce flat surfaces with a single-point cutting tool. In shaping, the cutting tool on a shaper reciprocates or moves back and forth while the work is fed automatically towards the tool. In planning, the work-piece is attached to a worktable that reciprocates past the cutting tool. The cutting tool is automatically fed into the workpiece a small amount on each stroke.www.mapeng.net 马棚万机械资讯

Grinding www.mapeng.net 马棚万机械资讯

<6> Grinding makes use of abrasive particles to do the cutting. Grinding operations may be classified as precision or nonprecision, depending on the purpose. Precision grinding is concerned with grinding to close tolerances and very smooth finish. Nonprecision grinding involves the removal of metal where accuracy is not important.www.mapeng.net 马棚万机械资讯