With the progress of society, the development of science and technology, with the improvement of living standards, the quality of life has been greatly improved. Many people are thinking about how to improve the quality. The better the technology is, the more market demand will be, and the higher the efficiency will be. What are the CNC processing techniques of aluminum shell? Let’s have a look!
With the progress of society, the development of science and technology, with the improvement of living standards, the quality of life has been greatly improved. Many people are thinking about how to improve the quality. The better the technology is, the more market demand will be, and the higher the efficiency will be. What are the CNC processing techniques of aluminum shell? Let’s have a look!
CNC machining of aluminum shell
1. Reasonable selection of cutting amount, the staff according to the need to be processed material, hardness, cutting state, material type, cutting depth and so on to choose the cutting speed. These conditions are the ideal conditions to effectively protect the machine from wear.
The three factors of cutting conditions: cutting speed, feed rate and cutting depth directly cause tool damage. With the increase of cutting speed, the tool tip temperature will rise, which will produce mechanical, chemical and thermal wear. If the cutting speed is increased by 20%, the tool life will be reduced by 1 / 2
The relationship between feed condition and tool back wear occurs in a very small range. But the feed rate is large, the cutting temperature rises, and the back wear is large. It has less effect on the tool than the cutting speed. Although the influence of cutting depth on the tool is not as great as the cutting speed and feed rate, but when the cutting depth is small, the hardened layer of the material to be cut will also affect the tool life.
The user should select the cutting speed according to the material to be processed, hardness, cutting state, material type, feed rate, cutting depth, etc.
The selection of suitable processing conditions is based on these factors. Regular and stable wear is the ideal condition for service life.
2. Choose the right tool. For rough turning, generally speaking, it is better to choose high strength and durable cutting tools, which can better meet the requirements of rough turning.
How to select machining tool reasonably? How many factors are there in cutting parameters? How many kinds of tools are available? How to determine the tool speed, cutting speed, cutting width?
① No regrinding cemented carbide end milling cutter or end milling cutter should be used in plane milling. In general, the second tool path should be used as far as possible, and the end milling cutter can be used for rough milling, and the cutter can be continuously moved along the surface of the workpiece.
② End mills and end mills with cemented carbide inserts are mainly used for machining boss, groove and box face.
③ Ball cutter and round knife (also known as round nose knife) are commonly used to process curved surface and variable bevel profile. The ball cutter is mostly used for semi finishing and finishing.
3. Choose a reasonable fixture. Parts should fully meet the needs of the machine, in order to reduce unnecessary positioning error, good choice of special fixture clamping tools. Machining route refers to the motion track and direction of the cutter relative to the parts in the process of NC machine tool processing.
① The machining accuracy and surface roughness requirements shall be guaranteed;
② The processing route should be shortened as far as possible to reduce the tool idle travel time.
4. The working route of the front waist is determined. Shorten the machining route as far as possible to reduce the wear of the machine.
The technical requirement of CNC machining technology is that the control system can logically process the program with control code or other symbol instructions, and decode it by computer, so that the machine tool can move and process parts. The blank is processed into semi-finished products by cutting tool.
