CNC computer gong machine precision debugging

The high-speed computer gong uses the precision level instrument and other testing tools, mainly through adjusting the pad iron to fine adjust the level of the main bed of the machine tool, so that the geometric accuracy of the machine tool can reach the allowable tolerance range;

For the automatic tool changing device, adjust the position of tool magazine, manipulator, stroke parameters, etc., and then check the action with instructions to ensure accuracy;

For the machine tool with APC automatic exchange table, after adjusting the relative position, carry out automatic exchange;

After the adjustment of the machine tool, carefully check whether the parameter setting values in the numerical control system and the programmable controller conform to the data specified in the random index, and then test the main operation functions, safety measures, and the execution of common instructions.

High speed computer gong to check the normal operation of auxiliary functions and accessories of the machine tool. It is usually composed of numerical control system, main drive system, feed servo system and cooling system

1. The spindle box includes the spindle box and the spindle drive system, which is used for clamping the tool and driving the tool to rotate. The spindle speed scale and output torque have a direct impact on the processing.
2. The feed servo system is composed of feed motor and feed performing mechanism. According to the feed speed set by the program, the relative motion between the tool and the workpiece is completed, including linear feed motion and rotary motion.
3. The control system is the middle of the motion control of CNC milling machine, which performs the CNC processing program to control the machine tool for processing.
4. Auxiliary equipment such as hydraulic, pneumatic, smooth, cooling system and chip removal, protection equipment.
5. The basic parts of high-speed computer gong machine tool usually refer to the base, column, beam, etc., which is the foundation and structure of the whole machine tool. High speed Gong processing economical CNC lathe is also known as simple CNC machine tool. Its main characteristics are low price and strong function pertinence. In general, after refitting ordinary machine tools into economical CNC lathes, the work efficiency can be increased by 1-4 times, the scrap rate can be reduced, the product quality can be improved, and the labor intensity of workers can be reduced.

High speed Gong machining generally uses a single board microcomputer as the control device and a stepping motor as the actuator to transform the ordinary machine tool into an economic CNC lathe. The reformed machine tool not only retains the generality of the original machine tool, but also adds many features that the traditional machine tool does not have, such as automatic tool setting, clearance compensation, automatic feed speed adjustment, automatic return to origin and so on. This kind of machine tool is especially suitable for frequent and rotational machining of rod, shaft, disc parts and parts with taper and spherical surface of medium complexity.

Economic CNC lathes can be divided into three types according to the driving system

1. Open loop system driven by stepper motor. This kind of system is widely used. Economical CNC lathe can complete the processing of cylinder, plane, cone, curved surface and thread.
2. It is a point position numerical control system driven by asynchronous motor or DC motor and fed back by grating measurement.
3. A semi closed loop system driven by DC servo motor for high speed Gong machining. Because of the high price, this kind of system is mainly used for new machine tools.

Modern control technology of large computer gong processing machine Large scale CNC machine tools combine the rapidity of modern control technology with the precision of machine tool movement, forming a real constant speed processing system. The control system of CNC machine tools may become an obstacle to shorten the processing cycle and improve the finish of complex 3D models, aerospace parts or medical devices. When the processor can’t keep up with the running speed of the program, the driver will reduce the feed speed of the tool due to the urgent need of information, thus prolonging the processing cycle and leading to the uncoordinated operation of the tool. In order to replace the worn and overloaded tools, in addition to increasing the number of tool runs to the tool library, it will also affect the effective utilization of the spindle, increase the workload of fitter and finishing time.

Large computer gong processing when the speed (feed rate) is not stable, there will be some problems. When the cutting tool runs through the part processing, its uneven movement will cause different loads on the cutting groove of the cutting tool, thus affecting the machining accuracy and surface finish. If the running speed of the tool is not fast enough to maintain the minimum cutting load of the tool, friction will occur between the tool and the workpiece instead of cutting, then the unstable movement of the tool will shorten the service life of the tool. This operation mode will also cause a small amount of fracture gap of the blade, which will make the tool hot and blunt. However, with constant speed processing, the average processing speed of the tool through the workpiece will be more uniform, and the processing accuracy will be higher, which can not only shorten the processing time, but also extend the service life of the tool.

In the process of program execution of large-scale computer gong processing, the result of high-speed program processing is that the random error of the control system can be stably monitored and adjusted, so that the tool can run at a uniform speed and achieve a perfect surface integrity. The system uses more than 80 high-speed buffers to monitor the operation of the cutting tool. If the random error is exceeded, the movement of the cutting tool can be adjusted immediately