Judge processing quality what are the principles of metal cutting machine?

For cutting processing, evaluate its processing quality mainly includes the following several principles:

1, cutting smooth, no stripes, not brittle fracture

high-speed metal cutting machine cutting plate, the molten metal will not appear in the vertical beam at the bottom of the incision, may in the beam after partial. As a result, the curved lines formed in the cutting edge, texture closely follow moving beam, in order to fix this problem, at the end of cutting processing to reduce the feed rate, can greatly eliminate grain line.

2, narrow kerf width, this is mainly related to the size of beam spot diameter

metal cutting machine cut width in general will not affect the cutting quality, only the outline of special precision is formed within the parts, the cutting width is important, because the cutting width determines the Canon of the outline, when the plate thickness increases, the cutting width also will increase. So want to ensure that the same precision, no matter how hard it is incision width, the workpiece in cutting machine processing area should be constant.

3, the perpendicularity of the kerf width is good, small heat affected zone

usually, metal cutting machine mainly concentrated in the 5 mm below the material on the processing of the cross section vertical degree may not be the main evaluation factors, but for high power cut, when the thickness of the materials for more than 10 mm, the cutting edge of vertical degree is very important. Away from the focus, beam divergence, according to the location of the focus, cutting towards wider at the top or bottom. Cutting edge what percentage deviation from vertical line mm, margin is vertical, the higher the cutting quality.

4, there is no material burning, not melt layer to form, no big slag

the CNC cutting machine of the metal is hanged slag mainly embodied in the sedimentary and burr, reduction of material deposition for cutting before start piercing in workpiece surface with a layer of special liquid oil. Gasification and all kinds of materials in the wind except incision without customers, but the upward or downward discharge will be formed in the surface deposition. And the formation of burr decided when a very important influence factors of cutting quality, because of the burr removal need extra workload, so the burr can serious and how much is the intuitive judgment of the quality of the cutting.

5, rough surface plating of incision, the size of the surface roughness is the key to measure the cutting surface quality

actually for metal cutting machine, cutting section lines and roughness of a direct link directly, often cross section lines of poor cutting performance will directly cause the roughness is higher, but considering the two kinds of different effects on the formation of different, generally we analyze metal CNC cutting machine processing quality, still is to separate for analysis. Cutting section will form the vertical grain, grain depth determines the cutting surface roughness, the lighter the grain, the cutting section is more smooth. Roughness is not only affect the appearance of the edge, but also affect the friction characteristics, in most cases, the need to reduce the roughness as far as possible, so the more shallow, grain, the higher the cutting quality.

6, cutting material heat affected

as a hot cutting processing equipment, metal cutting machine is bound to in the process of using thermal effects on the metal material, its embodiment mainly includes three aspects: (1) heat affected area; (2) sag and corrosion; (3) material deformation. Which refers to cut in heat affected area, along the area around the incision is heated. At the same time, the structure change of the metal. For example, some metal hardening will happen. Heat affected area refers to the depth of the internal structure change in the region; The sag and corrosion is to have an adverse effect on the surface of the cutting edge, affect the appearance. They appear in general should avoid cutting error; Finally if cut sharply heating parts, it will be out of shape. This is especially important in the fine processing, because the outline and the connection piece is usually only a few millimeters wide ten points. Control power and the use of short pulse can reduce parts heat, avoid deformation.