Classification of the cutting tool
It is divided into turning tool, hole processing tool, milling cutter, broach, thread tool, gear tool, automatic line and CNC machine tool and reamer and other types. The tool can also be classified according to other ways, such as the material used is divided into high speed steel tool, carbide tool, ceramic tool, cubic boron nitride (CBN) tool and diamond tool; According to the structure, it can be divided into integral cutting tool, insert cutting tool, machine clip cutting tool and compound cutting tool. According to whether the standardization is divided into standard Cutting Tools and non-standard Cutting Tools, although the classification is many, but the correct choice of Cutting Tools, in order to play Properties of Cutting Tools.
Introduction to commonly used cutting tools
1. Turning tool
Turning tool is one of the most widely used tools in metal cutting without signature machining. It can be used on the lathe to process the outer circle, end plane, thread, inner hole, also can be used for cutting and cutting, etc. In structure, turning tool can be divided into integral turning tool, welded assembly turning tool and mechanical clamping blade turning tool. The turning tool of mechanical clamping blade can be divided into machine tool turning tool and indexable turning tool. The cutting performance of mechanical clamping tool is stable, and the workers do not need to sharpen the tool, so it is used more and more in modern production.
2. Hole machining tool
Hole processing tools can be generally divided into two categories: one is the tool from the solid material processing hole, commonly used twist drill, center drill and deep hole drill; The other is on the workpiece on the existing hole for reprocessing tools, commonly used with reaming drill, reamer and boring tool.
3. The milling cutter
Milling cutter is a kind of multi - edge rotary cutting tool which is widely used. By use:
For processing plane, such as cylindrical plane milling cutter, end milling cutter, etc.
For processing grooves, such as end mills, T - shaped cutters and Angle milling cutters.
For machining shaped surfaces, such as convex and concave milling cutters and for machining other complex shaped surfaces. Milling productivity is generally higher, machining surface roughness value is larger.
4. The broach
Broach is a kind of machining precision and cutting efficiency are relatively high multi-tooth tool, widely used in mass production, can process a variety of inner and outer surface. Broach according to the processing of the surface of the workpiece, can be divided into a variety of internal broach and external broach two categories. The use of broach processing, in addition to according to the workpiece material to choose the front Angle of the cutter tooth, the back Angle, according to the workpiece processing surface size (such as the diameter of the hole) to determine the broach size, but also need to determine two parameters:
Tooth lift Angle af that is, the radius or height difference between the front and rear teeth.
Pitch p is the axial distance between two adjacent cutter teeth.
5. Thread cutting tools
Threads can be machined by cutting and rolling methods.
6. Automatic line and CNC machine tools
The cutting part of this kind of tool in general and the general tool is not much different from different situations, just to adapt to the characteristics of CNC machine tools and automatic line processing, put forward higher requirements for them.
Numerical control tool has formed three systems: turning tool system, drilling tool system and boring and milling tool system.