Research On The Key Technology Of Peripheral Grinder Of Indexable Inserts

With the rapid development of advanced manufacturing technology, cutting tools, known as "teeth of industry", have been playing a critical role in promoting the progress of machining technology. Indexable insert is a type of cutting tool which well embodies the features of modern times, and is widely applied in modern machining due to its excellent durability, reliability as well as the advantage of cost-effective. Quality criteria like geometric accuracy and surface roughness of indexabel insert are achieved through grinding technology, thus making the peripheral grinding machine tool a crucial link in the manufacture of indexabel inserts. Currently, foreign countries monopolize the market of the top grade peripheral grinding machines and the corresponding intelligent software package of high flexibility and keep the relevant core technology only to themselves. Against such backdrop, the author conducts researches on such issues as the molding technology of indexable inserts, the structure of machine tools, the optimization of grinding software and the reliability of machine tools. This thesis is written on basis of the research results achieved by previous fellow students in the lab. The structure of the thesis is as follows.1. Based on grinding principles and CNC grinding technology, the thesis analyzes the configuration and parameters of indexable inserts, studies the peripheral grinding technology and illustrates the latest circulation process of peripheral grinding technology. On basis of the grinding machine structure designed by the research group, the author conducts both dynamic and static analysis as well as harmonic response analysis on the whole structure of the machine, probes into the impacts on the whole machine brought by electromagnetism and grinding force, and optimizes the structure of the machine.2. The CNC technology is adopted to tackle the decentration problem which occurs in the process of indexable insert clamping. To fix the problem, the author further optimizes the design of insert molding, amends the motion model of grinding wheels relative to products in the peripheral grinding of indexable inserts, and establishes the mathematical model formula of decentration grinding.3. On basis of the the theoretical model of decentration grinding, the author redesigns and optimizes the software system which automatically generates the peripheral grinding program of indexable inserts to meet the needs of convenient and simple operation as well as safety and stability. The software communication module is constructed to facilitate the communication between the software system and CNC system, making the software more intelligent.4. The author elaborates on the process of full-automatic grinding and writes the program of CNC grinding. Simulated tests are carried out in NCSIMUL to test the validity of grinding program and machine tool technology. Through the reliability test of the software debugging and the grinding machine, the inserts in the debugging process and the failures that occur during the test are recorded and analyzed. Then reliability analysis of the software and the grinding machine is conducted and the corresponding improvement measures are proposed.