Question

What method should be used for CNC machining of internal and external rotating surface parts?

A. Turning, boring;

B. Milling;

C. Planing.

Comments

What is an end mill, what is a disc mill and what is the difference

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Face milling cutter, also known as disc milling cutter, is used for machining planes on vertical milling machines, face milling machines or gantry milling machines, and there are cutter teeth on the end face and circumference, and there are also coarse teeth and fine teeth. There are three types of structures: integral type, tooth type and indexable type.

Face milling cutters are divided into two categories, one is to fix the carbide insert on the teeth by brazing, and then install the teeth on the milling cutter body, which is called the toothed face milling cutter;

The second type is to install the carbide insert directly on the milling cutter body, and then fix it with screws, etc., which is called indexable machine clamp milling cutter. The face milling cutter has two front angles, axis front angle and radial front angle, and the direction of the two front angles is selected according to the material and cutting conditions of the object to be machined, that is, positive +, negative -, or zero.

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End mills:

Used for machining grooves and step faces, etc., the knife teeth are on the circumference and end face, and cannot be fed axially during work. When the end mill has end teeth passing through the center, it can be fed axially.

Face milling cutter:

Also known as disc milling cutter, it is used for machining planes on vertical milling machines, face milling machines or gantry milling machines, and there are cutter teeth on the end face and circumference, and there are also coarse teeth and fine teeth. There are three types of structures: integral type, tooth type and indexable type.

Distinguish:

Different types of processing are applicable, and the direction of feed is different.

Answer 1

For CNC machining of internal and external rotating surface parts, end mills should be used for processing. The option for this question is answer    B   , milling.

Comments

End mill is the most commonly used milling cutter in CNC milling, its structure, the cutting edge on the cylindrical surface is the main cutting edge, the end face is distributed with a secondary cutting edge, the main cutting edge is generally a helical tooth, which can increase cutting stability and improve machining accuracy.

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The main cutting edge of the end mill is on the cylindrical surface, and the cutting edge on the end face is the secondary cutting edge.

End mills without a central edge cannot make feed movements along the axial direction of the milling cutter when working. Standard end mills are available in coarse and fine teeth.

Answer 2

The main cutting edge of the end mill is on the cylindrical surface, and the cutting edge on the end face is the secondary cutting edge. End mills without a central edge cannot make feed movements along the axial direction of the milling cutter when working. Standard end mills are available in coarse and fine teeth.

An end mill is a slender milling tool with a cutting edge on the periphery and end face and a shank.