CNC milling machine cutter runout

Radial runout processing method 2018 - CNC milling machine tools 11 - 23 in CNC milling machine machining process, the cause of machining error, cutter runout of error is one of the important factors, which directly affect the machine under the condition of ideal processing can achieve minimum shape error and the geometry precision of the machined surface. In actual cutting cutter runout effect parts machining accuracy, surface roughness and tool wear is not uniformity and multitooth cutter cutting process characteristics. Cutter runout, the greater the cutting tool machining state is unstable, the more influence processing effect. Cutting tool in machining to produce radial runout is mainly due to the radial cutting force exacerbated the radial runout. So, reduce the radial runout is important to reduce the radial cutting force principle. Can use the following method to decrease the radial runout: 1, the use of sharp knives choose larger cutting tool rake Angle, make more sharp tool, to reduce the cutting force and vibration. Choose larger after cutting tool Angle, reduce the cutter knife after the main surface and restore elasticity layer on the surface of the workpiece transition between the friction, which can reduce the vibration. Cutting tool rake Angle and back Angle, however, can not choose too large, otherwise it will lead to the strength of the cutting tool and the cooling area is insufficient. So, want to combine the specific situation to choose different cutting tool rake Angle and back Angle, rough machining can take little some, but when finishing, for reasons of decrease the cutter runout aspects, you should get a few bigger, make more sharp knives. 2, the main strength of the tools being used by two ways to increase the strength of the cutting tool. One is to increase the diameter of the tool holder can be in the same radial cutting force, tool rod diameter increased by 20%, cutter runout can reduce 50%. 2 it is can reduce the tool length, cutting tool out of length, the greater the machining deformation of cutting tools, processing is in constant change, when the cutter runout will subsequently changing, which leads to the workpiece machining surface is not smooth, the same cutting tool length decreases by 20%, cutter runout will reduce 50%. 3, cutting tool rake face to smooth when machining, smooth blade can reduce the chip before friction of tool and can also reduce the cutting tool by cutting force, and reduces the radial runout of the cutting tool. 4, the spindle taper hole and collet chuck clean spindle taper hole and clean, cannot have dust and debris generated in workpiece machining. When choosing processing cutting tool, as far as possible use extended length shorter cutter knife, reasonable efforts to uniform, don't too big or too small. 5, choose proper to turning turning hours, there will be a processing skid phenomenon, resulting in the amount of cutting tool in machining the radial change constantly, make the processing of the surface is not smooth when the turning of the cutting force will increase, resulting in deformation of cutter, increase the amount of cutting tool in machining radial runout, also can make the processing of the surface is not smooth. 6, when processed using conventional milling due to climb milling, screw and nut is changing the clearance between the position and will cause uneven feed of the workbench, which has the shock and vibration, affect the life of the machine tool, cutting tool and workpiece surface roughness and machining when using conventional milling and cutting thickness changes from small to big, tool load also changed from small to big, cutter when processing more smoothly. Note that this is only used in finish machining, in the rough machining or climb milling is used, this is because the climb milling productivity is high, and the service life of the cutter can be guaranteed. 7, the rational use of cutting fluid is given priority to with cooling the aqueous solution of little impact on cutting force. Give priority to with lubrication of cutting oil can significantly reduce the cutting force. Because of its lubrication, reduces the cutting tool rake face and chip and between dao and transition between the surface of the workpiece after friction, so as to decrease the cutter runout. Practice has proved that as long as to ensure the accuracy of the machine parts manufacturing, assembly, choose reasonable technology, tooling, tool of radial runout of the impact of workpiece machining accuracy can be reduced to the greatest extent.