CNC precision machining manufacturers' technology and inspection for precision machining

Technology and inspection of precision machining by CNC precision machining manufacturers

Cutting history of precision machining:

In the precision machining of CNC precision machining manufacturers, what is adopted is Micro-cutting technology, the cutting depth is small, and the cutting efficiency is mainly borne by the edge arc of the cutting edge of the tool. Whether the chips can be cut off from the material to be processed mainly depends on the force of the material point of the material to be processed at the arc of the cutting edge.

In order to study the micro cutting process, inquire about various phenomena in the cutting process, and begin to analyze the transition cutting process. CNC precision machining manufacturers take the cutting situation of the reverse tool as an example to analyze the contact between the cutting edge of the tool and the surface of the workpiece and the deformation of the workpiece material during the transitional cutting process. Taking Huiwen CNC precision machining as an example, it is the cutting process of single-edged torsion tool milling plane. Starting from the contact between the cutting edge of the tool and the workpiece, the tool slides on the workpiece at a certain interval, and the surface of the workpiece only deforms elastically. After the cutting edge is removed, the workpiece surface can still return to its original condition. This sliding of the cutting edge on the workpiece surface is called elastic sliding.

As the tool continues to twist, the amount of back engagement continues to increase, and plastic deformation begins to occur on the surface of the workpiece. In this plastic deformation zone, after the cutting edge slides over the surface of the workpiece, the surface of the workpiece is scratched There are groove marks, but there is no real removal of material at this time. This sliding of the cutting edge on the workpiece surface is called plastic sliding.

After the plastic sliding, with the increase of the amount of cutting on the back, chips are generated on the front, and the cutting process begins. Because of the elastic-plastic deformation on the workpiece surface, the motion trajectory of the cutting edge does not coincide with the surface line formed by the machined surface. By changing the cutting angle of the tool, the very large intervening depth between the tool and the workpiece can be sequentially changed, so that the curve can be obtained. When the cutting edge is very large and the depth is very small, that is, the cutting angle is very small, it is the cutting condition.

At this time, the tool only slides over the surface of the workpiece, and there is no trace of the tool cutting into the workpiece surface, and all contact lengths between the tool and the surface to be machined belong to the elastic deformation area.

When the very large cross-depth between the tool and the workpiece reaches a certain value, a cutting condition is formed. There is an elastic sliding area at the beginning of cutting, and then it enters the plastic deformation area. After the cutting edge slides past, groove marks will be left in the plastic deformation area, but no chips will occur. Continue to increase the very large depth of penetration between the tool and the upper part, and a cutting state is formed. In the initial contact between the cutting edge and the workpiece surface, it is an elastic sliding area, and with the increase of the amount of back engagement, it becomes a plastic sliding area, and then becomes a plastic sliding area. Cutting area, grooves on the workpiece surface for plastic deformation and chip removal. With the reduction of the amount of back knife, it transitions to the plastic deformation zone and the elastic deformation zone later.

CNC precision machining manufacturers must point out that there is also an elastic deformation zone in the plastic sliding area, and in the cutting area there is not only a chip removal zone, but also a plastic deformation zone and an elastic deformation zone.

Therefore, during the micro-cutting process of CNC precision machining manufacturers, one side of the material near the arc of the tool edge is cut off as chips, and the other side is squeezed to cause elastic and plastic deformation. The cutting results of ultra-precision machining are formed by the cutting benefits and rolling benefits of the tool, and in the process of forming the machined surface, the accompanying rolling benefits account for a very large proportion, that is, the quality of the machined surface is very large. affected by the rolling results.

The precision machining technology of CNC precision machining manufacturers is one of the most important development trends of the contemporary machinery manufacturing industry, and it plays a vital role in improving the performance, quality of mechanical and electrical products and developing high-tech, and It has become a key technology for winning in international competitions. The development of China's manufacturing industry has entered a stage of rapid development. The introduction of excellent equipment and the influx of a large number of professional talents have made the manufacturing level of many coastal areas improve rapidly. With the deepening of the scientific and democratization of the national plan, it is believed that China's manufacturing industry will develop faster and more healthily.

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