1. The operation of economic CNC lathe program
Economy CNC lathe is digitalized information to achieve automatic control. At the end of program running, the tool returns to the home position when offside, this phenomenon is usually caused by the mechanical transmission system running resistance is too large. Cutting feed, the tool holder low-speed operation, low-voltage drive, stepper motor running torque is small, not enough to overcome the resistance caused by the loss of step. And back to zero when the stepper motor high-voltage drive, high operating speed, torque, and there is no draft resistance, stepper motor operation is normal and does not lose steps. So go to lose step and return to normal will cause the above phenomenon.
At this time, you can check the stepping motor gearbox transmission gear or stepping motor and the screw between the transmission gear with or without iron particles on the foreign body, or skateboard panel is too tight to make the running resistance increase and other reasons. It is the machining program through the control medium into the CNC device, the CNC device after analysis and processing, issued a variety of signals and instructions corresponding to the machining program, control the machine tool for automatic processing.
2. About the processing of economic CNC lathe
Economic CNC lathe is developed on the basis of ordinary lathe, but its automation degree is greatly improved. Its automatic control system is mainly composed of a single-chip computer, and through the control program, it controls the longitudinal and transverse feeding device and tool-changing device of the machine tool to automatically complete the processing of parts. It is the end of the program run, the tool returns to less than zero, this phenomenon is generally caused by control system failure.
Tool in the feed or in the processing requirements of low-speed operation, this time the stepper motor running speed is low, using low-voltage power supply, and the program back to the zero point, the requirements of the rapid return, which requires high-speed operation of the stepper motor, the use of high-voltage drive power supply, so that the output torque increases to ensure that the normal return to zero. Control the output of high-voltage drive power supply has a switching transistor, when the switching transistor is damaged, high speed back to zero, high-voltage power supply can not be opened, the output torque of the stepper motor is not enough, resulting in zero lost step, resulting in the return of the tool can not be returned to the origin, this failure can be eliminated by replacing the switching transistor. If you encounter such a problem, you can eliminate and deal with it yourself.
3. Fault detection of economic CNC lathe
Economical CNC lathe row tool holder is not easy to fail; electric tool holder common faults: tool holder in the process of tool change can not find the desired tool position, tool position can not be locked, positioning accuracy errors.
Simple CNC lathe is a more complex machine - electrical integration equipment, and thus in the event of failure should also be analyzed from the mechanical structure of the machine tool and electrical control of the two aspects of a comprehensive analysis. Low-speed stepping motor operation is normal, high-speed stepping motor lost step, this phenomenon may be driven by the power supply voltage reduction, so that the stepping motor output torque is reduced. So we should focus on checking the driving power supply part. When the high-voltage driver transistor is damaged, the high-voltage power supply can not be connected, so that the output torque of the stepping motor at high speed is reduced, resulting in step loss. It may also be caused by mechanical failure.
So in the case of checking the above components are not fruitful, should also check the screw, silk mother, skateboard, stepper motor reducer and other parts, when there are parts of the bending, deformation, or there are foreign objects stuck will make the running resistance increase, when the low-speed operation, the phenomenon is not obvious, but high-speed operation can not completely overcome the running resistance and caused by the loss of step.