The cutting tool clearance Angle of processing in the application of internal and external circular grinding machine

The cutting tool clearance Angle of processing in the application of internal and external circular grinding machine - 2018 07 - 02 vaporizes quickly min ( Harbin electric co. , LTD. ) Abstract: the article about how saw blade milling cutter on the internal and external circular grinding machine tool machining clearance Angle method is described, and through their own design and production of auxiliary tools ( Milled) , solve the existing machine can't complete the cutting tool clearance Angle processing difficulties, meet the use requirement, to improve the machining performance of machine tools and machine tool for the purpose of the development of new technology. Key words: lateral clearance Angle; Homemade tools; Technology development 1 introduction saw blade milling cutter is a commonly used tool in machining, often used for cutting, notching, flat head of workpiece processing functions, the role of the lateral clearance Angle is occurring in the process of machining reduce the resistance and prevent in machining process produced by clamp knife knife, the phenomenon such as damage to the workpiece. Workpiece is larger, the narrower the channel, the deeper, the processing and the greater the resistance between the cutter and workpiece, clamp knife, knife phenomenon is more serious, caused a difficult to production, thus the machining clearance Angle on both sides of the thickness of the cutting tool is very necessary. 2 project the source of the saw blade milling cutter machining clearance Angle should normally machining on the horizontal axis surface grinding machine with rotary table, my company's horizontal spindle surface grinding machine with rotary table after damage to scrap, with years saw blade milling and side milling cutter Angle of the lateral clearance of no machine can processing, cutting tools make it difficult to production, in order to solve the production needs, we decided to technology development in internal and external circular grinding machine, using machining cylindrical grinding wheel side head to lateral clearance Angle of cutting tool. Three processing methods and the difficulty in horizontal spindle surface grinding machine with rotary table on machining, machine tool rotary table is horizontally placed, and you can adjust the Angle, the turntable planar magnetic, adsorption by machining on the turntable plane ( FIG. 1) , through the turret rotation, the manufacturing of the cutting tool clearance Angle and cutting tool in machining process won't produce deformation and vibration phenomenon. Figure 1 horizontal spindle surface grinding machine with rotary table diagram on the inside and outside grinder machining workpieces, due to the machine tool clamping way for vertical clamping, and cutting tools for large diameter, thin thickness more artifacts, jaw cannot directly clamp tool cylindrical, ( Reason: can not clamping, blade is easy to damage of tooth profile and machining deformation, etc. ) So the workpiece clamping and eliminate machining deformation is the key issue in the production presses for solution. 4 solutions through analysis and research, designed and manufactured by auxiliary tool, take the following measures to solve the problem of the machine tool clamping: 4. 1 first design a plate, a taper hole in the center of the tire plate processing, will locate shaft fitting on the tire plate ( Choose the taper hole aims to increase the positioning accuracy) , positioning between shaft and tire plate with screw tight, prevent positioning shaft rotation, the tool face abuts on the tire board, with positioning shaft orientation will cover after the fixed on the tool face with nut rot, can eliminate the blade flutter, when processing with four jaw chuck clamp plate, thus solves the problem the clamping ( 2) 。 The advantage of the clamping fixture is: general structure is used in tire body positioning shaft with removable cone pin positioning, when the workpiece hole size change, as long as with a positioning shaft can satisfy the use requirement, not only can solve the problem of different sizes of cutting tool processing, and save the processing cost, reduces the manufacturing cost, solves the difficulties, meet the processing requirements. FIG. 2 the clamping effect diagram 4. 2 usually saw blade milling cutter diameter larger ( More than 30 200 mm) , with thin thickness ( Generally in 3 ~ 5 mm) , the Angle of the lateral clearance Angle according to the different selection range of cutter diameter is in commonly 0. 5° ~ 1. 5° Between, so prone to warping deformation when machining tools. If the tool deformation and uneven, processed products tool rotation will occur when the deflection phenomenon, is the workpieces out-of-tolerance easily. How to eliminate the deformation of the cutting tool, the measures was conducted in the tool again after rough machining, heat treatment process in a vacuum furnace high temperature tempering to eliminate stress, are used when processing small feeding at the same time, many times turn, cooling processing method is used to reduce stress. 4. 3 internal and external circular grinding machine has two grinding head, using the circular grinding head processing, grinding wheel side in contact with the workpiece, large area processing, and resistance is big, because out of tool rod long and thin, processing and are prone to vibration, processing surface vibration ripples, bright and clean degree is not high. When using external cylindrical grinding head processing, due to the grinding wheel on less than the workpiece machining parts ( Machine tool position limit) , can only be machine chuck power head and grinding head rotation into compound Angle at the same time, using the cylindrical grinding wheel processing cutting tool clearance Angle ( 3) 。 Processing by this method the surface finish of workpiece, workpiece end face abuts on the tire plate, thus the machining deformation, meet the requirements of the design drawings, and high production efficiency. Figure 3 machining state diagram 5 effect compared with this method of cutting tools has been applied in production practice, and the processing effect is very good, by processing the surface finish of the cutting tool clearance Angle detection of Ra1. 6 above, and deformation of small, high production efficiency, meet the use requirement, so the machining performance of machine tool technology development, will effectively improve the utilization rate of machine tools, also can reduce the manufacturing cost of the cutting tool.