Cnc Mills To Note The Proper Use Of The Problem - Knives, Metal Tools, Cnc Mills - Hardware Industry

Milling milling complex parts heart, the NC legislature Mills Use should be aware of the following questions:

1. Clamping processing mills with mills they use a heart Spring Folder Set Folder method used in the cantilever. Milling process, it may sometimes appear mills gradually extended from the knife folder, or even falling, resulting in the workpiece scrap phenomenon, its causes within the general folder for knife hole and mills Chuck Exist between the outer diameter of film, resulting in insufficient clamping force. Cutter factory is usually coated with anti-rust oil, if cutting the use of non-soluble cutting oil, knife folder will be attached to a layer of fog film hole, when the knife handle knife when the film keep both folders, knife folders are difficult to firmly clamp tool holders, processing mills are likely to loose fall. Therefore, before clamping end mills, the Department should first milling cutter shank hole folder cleaned with cleaning solution, wipe dry and then be clamped. When the cutter diameter is large, even if the folder is very clean knife holder, knife incident may occur out this time should be used with the corresponding side of the lock holder to level the gap mode. Cutter clamping of another problem that may arise after the processing mills turner port office was broken and the reason to use the general folder for too long knife, knife folder has been worn into a cone-shaped port Division?

2. Cutter blade vibration due cutter and folder exist between the small gap, so the processing Tools Possible vibration phenomenon. Vibration will eat knife blade cutter circumference Uneven, and cut expansion ratio of the original value increases, affecting the precision machining tool life. However, when processing the smaller groove width, they can head to the tool vibration, expansion by increasing the volume of all the necessary slot width, but this case should limit the maximum amplitude of 0.02mm mills the following, otherwise can not be stable cutting. Vibration normal processing mills as small as possible. When the tool vibration, the lower the cutting speed, feed rate, as both have been reduced by 40% in vibration there is still large, it should consider reducing the amount knife to eat. Such as processing system in the resonance, which might be excessive cutting speed, feed rate is low, less rigid tool system, workpiece clamping force is not enough and the workpiece or workpiece clamping methods, the shape of the factor of time should be taken to adjust the cutting increase the tool system stiffness, improve the feed rate and other measures.

3. Cutter cutting cutting edge Mold CNC milling the workpiece cavity, when the concave part of the cut point or deep cavity, the required lengthening of the extending end mills. If you use the long edge milling cutter, cutter deflection as large, easy to produce vibrations and lead to tool breakage. Therefore, the processing, if the only tool to participate in cutting edge near the end, it is best to use long-handled tool length longer Duanren type mills. Horizontal CNC Machine tool The use of large-diameter end mill workpiece, because of self-respect arising from the large deformation of the tool, we should pay great attention to cutting edge cutting prone to problems. Must use the long edge milling cutter case, you need to significantly reduce the cutting speed, feed rate.

4. Cutting parameters were selected cutting speed chosen depends on workpiece material; feed rate was chosen depending on workpiece material and cutter diameter. Some foreign manufacturers of cutting tools cutting tool cutting tool parameters with the sample selection table, for reference. But at the same time cutting parameters are chosen by the machine tool, cutting tool system, is the shape of workpiece clamping methods and various factors should be adjusted according to actual situation cutting speed feed rate. As to the priority considerations in tool life when cutting speed can be appropriately reduced feed rate; When the chips from the edge is not good, we can appropriately increase the cutting speed.

5. Cutting methods to choose clockwise helps prevent blade damage can increase the tool life. But there are two points to note: If the ordinary machining, should seek to eliminate gaps feeding mechanism; When the surface residues are casting, forging process the formation of oxide film, or other hardened layer, should be adopted against the mill.

6. Carbide end mills using high-speed steel mills use a more broad range of application requirements, even if slightly inappropriate choice of cutting conditions, nor to any great problem. Although the carbide cutter has a good wear resistance of high-speed cutting, but it uses less than the scope of a wide range of high speed steel end mills and cutting conditions must be in strict conformity with tool requirements.

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by: gaga

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