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The low utilization rate of China's NC Machine Tool Causes and Countermeasures (1)
The low utilization rate of China's NC Machine Tool Causes andCountermeasures (1)
First, the low utilization rate of China's NC Machine ToolAnalysis
CNC machine tools abroad in two shifts starting job under the rateof 60% -70%, but many users tend to only reach 20% -30%. Tosum up, the low utilization rate of China's CNC machine tools havethe following reasons.
CNC machine tool users to buy blindly, with the result that "theroad is not as" specific performance is as follows:
1) Selection of "blindness." Do not consider investing inefficiency and economy, not considered cost-effective, such as inthe actual production has a low-grade domestically produced gooduse of CNC machine tools, but the blind pursuit of advanced blindlyimported foreign good performance, high precision CNC machine.
2) Selection of the existence of "one-sidedness." Full-featured one-sided about that function better, but the actualuse of a lot of features do not have access to, or almost not.
3) CNC Machine Tool Selection confusion, the type of CNC machinetools, specifications are incomplete. Purchasing products ofdifferent manufacturers, CNC system is not unified, there is nogood technical back-up, to use after the purchase, programming,maintenance and accessories supply, universal tooldifficult.
4) the acquisition and found "not as good as the way," CNC machinetool types, specifications, accuracy is incompatible with theProduct, after the purchase cost is too high or the scope ofprocessing is too small.
5) the purchase of CNC machine tools, only the performance of greatimportance to the host to the neglect of attachment and toolmatching, resulting in use because of the lack of attachment or atool to affect the operation of the entire mainframe.
CNC machine tools technical staff, "the overall quality of thelow." Users absence of high-level programming staff,operations personnel, maintenance personnel, such as complexapplication-oriented professionals. If users choose a morecomplex, full-featured, more advanced CNC machine tools, if peoplego without proper operation of the use and programming, there is nomaintenance to preserve skilled repair, even the best can not makegood use of machine tools.
Programming "inefficient." According to statistics,programming manual, a parts machine tool programming time and theactual processing time ratio of about 30:1, while the NC machinetool should not have switched on the causes of 20% ~ 30% because ofprocessing time are not prepared and the delay.
Repair "a long time," the work of repair can not keep up. Atpresent, with the exception of a few companies have professionalrepair team, the most difficult to use the unit is equipped with ahigh technical level of maintenance personnel.
CNC machine tool's "poor working environment":
1) voltage fluctuation, and supply of poor quality. Most of China'spower grid voltage instability, not only large power fluctuations(sometimes fluctuate far more than 10%). And poor qualitypower supply, AC power is often superimposed high frequency cluttersignal, and sometimes the magnitude of the moment appears jammingsignal, which will directly affect the CNC system's stability,speed up the electronic components of the damage, destruction ofaircraft within the program or parameters, affect the normaloperation of machine tools.
2) changes in ambient temperature, and humidity. When thetemperature is too high or too low when the cause of the technicalperformance of electronic components major changes happen, so thatjob instability or unreliable increase in the occurrence offault.
3), such as strong electromagnetic interference.
CNC machine tools, "the management of low level":
1) The manager of CNC machine tools has recognized the errors inits performance are varied. Such as machining centersconsider one type of CNC machine tools is a valuable tool, notrough, too sophisticated processing of the workpiece is notnecessarily won, so naturally they object processing compressed toa very small range of CNC machine tools to enable missiondissatisfied ; if arrangements to the CNC machine tool workpieceinappropriate or does not control the processing of the roughworkpiece quality, and often the quality of accidents; productionmanagement plan is not strong, and arrangements for CNC machinetools is not enough technology to the preparation time, rely on NCmachine to "shock processing," but because of numerical controlmachine tool preparation time is longer, are often not able tocomplete the mission on time, so some managers consider this typeof machine not used to arrange the production of as much aspossible when the mission does not consider it.