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Cutter runout is mainly due to radial cutting force increase nc machine tools the radial runout. Therefore, reduce the radial cutting force is the important principle that the radial runout. CNC numerical control lathe factory suggestion can use the following method to reduce the radial runout:

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1. Use intensity play knife: there are two main way to increase the intensity of tools. One is in the same radial cutting force under increasing tool rod diameter, tool rod diameter increased 20%, cutter runout can reduce 50%. The second is the extension of shorten the tool length. The tool length, the greater the processing cutting tool in the process of deformation, the greater the processing time is constantly changing. Cutter radial pulse will continue to change, to produce artifacts. The surface is not smooth. Tool length decreased by 20%, the radial runout of ability is reduced by 50%.

2。 Use a sharp knife: choose the cutting tool rake Angle, make more sharp tool, to reduce the cutting force and vibration. Elastic recovery in order to reduce the blade surface layer and transition surface friction between the workpiece and chose the tool after the big Angle in order to reduce vibration. However, tool Angle before and after can't choose too big, otherwise it will lead to the strength of the cutting tool and the cooling area is insufficient. Therefore, according to the different situation to choose the cutting tool rake Angle and back Angle, can use smaller thickness processing, but in the processing, to reduce the number of cutter runout, should realize the larger processing, make the tools more sharp.

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3。 Tool rake face is smooth, in the process, smooth cutting can reduce the friction between cutter and cutting tool. Can also reduce the cutting force of cutting tools, reduce the cutter runout.

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4。 When finishing using conventional milling: due to the clearance between the nut and screw in the smooth milling the change of the position, the workbench's feed will be uneven, can produce shock and vibration, affect the service life of machine tool, cutting tool, workpiece machining and surface roughness. When using reverse milling, cutting thickness, since the tool load since the childhood, the cutting tool in machining process is more stable. Note that this only used in machining process, and still used in the process of rough machining. This is due to the high productivity of smooth and milling and tool life can be guaranteed.

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5。 The spindle taper hole and chuck cleaning: spindle taper hole and splint is clean, in the process of workpiece processing does not produce dust and debris. As far as possible when choosing machining tools, use the shorter length of the tool. When using knife, uniform intensity to be reasonable, don't too big or too small.

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6。 Choose a reasonable amount of knife: turning hours later, there will be a processing skid phenomenon, cause in the process of machining cutter eccentricity quantity changing, so that the processed surface is not smooth, knife is too large, cutting force will increase, lead to deformation of cutting tool. Large, increase the cutter radial jump momentum in the process also can make the finished surface is not smooth.

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