In the process of precision machining, the common milling machine tools are dial indicator, minute bar, center drill, drill and milling cutter, etc. the milling cutter used in precision machining has a variety of commonly used types according to the use classification.
- Cylindrical milling cutter: used for machining plane on horizontal milling machine. The cutter teeth are distributed on the circumference of the milling cutter and can be divided into straight teeth and spiral teeth according to the tooth shape. According to the number of teeth, it can be divided into coarse teeth and fine teeth. The helical coarse tooth milling cutter is suitable for rough machining because of its small number of teeth, high tooth strength and large chip space; Fine tooth milling cutter is suitable for finishing after grinding.
- Face milling cutter: it is used for vertical milling machine, end milling machine, gantry milling machine and upper machining plane. There are cutter teeth on the end face and circumference, as well as coarse teeth and fine teeth. Its structure has three types: integral type, inlaid type and indexable type.
- End milling cutter: it is used for machining groove and step surface. The cutter teeth are on the circumference and end face, and cannot feed along the axial direction when working. When the end milling cutter has an end tooth passing through the center, it can be fed axially (usually the double-edged end milling cutter is also called “keyway milling cutter” which can be fed axially).
- Three side milling cutter: it is used to process all kinds of grooves and step surfaces, with cutter teeth on both sides and circumference.
- Angle milling cutter: it is used for milling groove with certain angle. There are two kinds of single angle milling cutter and double angle milling cutter. Generally, it processes dovetail groove.
- Saw blade milling cutter: it is used for machining deep groove and cutting workpiece, with more cutter teeth on the circumference. In order to reduce the friction during milling, there are 15 ‘- 1 ° The secondary deflection angle of the system. In addition, there are keyway milling cutter, dovetail milling cutter, T-groove milling cutter and various forming milling cutters. According to the different parts processing technology, choose the appropriate milling tool.
There are four kinds of milling cutter structures that are often used.
- Integral type: the cutter body and cutter teeth are integrated.
- Integral welding tooth type: the cutter teeth are made of cemented carbide or other wear-resistant tool materials and brazed on the cutter body.
- Inlaid type: the cutter teeth are fixed on the cutter body by mechanical clamping. The replaceable cutter teeth can be the cutter head of the whole cutter material or the cutter head of the welding cutter material. The milling cutter with the cutter head mounted on the cutter body for grinding is called internal grinding type; If the cutter head is grinded separately on the fixture, it is called external grinding.
4, indexable: this structure has been widely used in face milling cutter, end milling cutter and three face edge milling cutter, etc.
The above is the classification of milling cutters commonly used in precision machining. Thank you for sharing!
ken. tang@chengcg.com
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