How will precision machining accuracy be affected?
Manufacturers' production is now associated with mechanical equipment. The research and development of mechanical equipment is all due to the machines required by the manufacturers in the current industry. Now, with the help of machinery, we are much faster, effective and faster. However, despite the help of mechanical equipment, facing customers, there are such high requirements for the quality of products. Of course, the accuracy of the machining process is very high, such as precision machining.
Digitally programmed contouring systems are widely used on milling machines, including simple, reliable, and inexpensive phase systems that are used by many factories, especially for precision machined parts machining, to control large three-dimensional surfaces.
Correct programming of the control program is one of the key criteria to ensure the processing quality of precision mechanical parts. For the digital program control phase system software, the automatic programming system software is used in the advance preparation of the control program, and its quality level is very high. The level depends on the price of the programming control software. Others are machining errors caused by manual control of the equipment, including accidental errors and systematic errors of the machining system software.
Systematic errors play a major role in all machining errors. For the overall processing of precision mechanical parts, it will lead to a series of CNC process system errors, mainly including the following aspects:
1. Gap. The consequences are insensitive belts in machine tool drive chains, but not in backlash in reverse drive chains.
2. The amplification factor is unstable in transmission.
3. The phase error is recorded on the control program tape.
4. Periodic step instability of sensor feedback with phase instability as the main form.
At the same time, it should be pointed out that the continuity of the ripple error of the transmission system is the cause of the ripple error of the machining system. Since any curve profile can usually be regarded as a combination of straight line segment and circular arc, the error is more obvious when machining the straight line segment with a small angle between the arc segment and the coordinate axis.
