1、 Computer gong processing — milling head of computer gong:
The milling head part is composed of two parts: a stage (or stepless) gearbox and a milling head. The main shaft of Dongguan high-speed computer gong machining milling head is supported on high-precision bearing to ensure high rotation accuracy and good rigidity of the spindle. The spindle is equipped with a quick tool change nut, and the front cone adopts 105 taper. The spindle adopts mechanical stepless speed change, which has wide adjustment range, stable transmission and convenient operation. The brake mechanism can make the main shaft brake quickly, which can save auxiliary time. When braking, the main shaft can be braked immediately by expanding the stop ring through the brake handle. When starting the main motor, attention should be paid to loosening the spindle brake handle. The milling head part is also equipped with servo motor, inner toothed belt pulley, ball screw pair and spindle sleeve. They form a vertical (Z-direction) feed transmission chain to make the spindle move in a vertical straight line.
The table and the saddle are supported on the wide horizontal guide rail of the lifting table, and the longitudinal feed of the table is driven by a servo motor installed at the right end of the table. The precision ball screw is driven by the inner toothed belt wheel, so that the worktable can obtain longitudinal feed. The left end of the table is equipped with a hand wheel and a dial for manual operation. Turclle B is used on the longitudinal and transverse guide rail surfaces of the bed saddle, so as to improve the wear resistance, stability and accuracy of the guide rail, and eliminate the phenomenon of low-speed crawling.
2、 Computer gong processing: the main functions of computer gong are as follows:
- Point position control function the point position control of CNC milling machine is mainly used for hole processing of workpiece, such as center drill positioning, drilling, reaming, countersinking, reaming and boring.
- The continuous control function can mill the plane and surface of the workpiece through the linear interpolation, circular interpolation or complex curve interpolation of the CNC milling machine.
- Tool radius compensation function of Dongguan mold processing.
- If programming directly according to the workpiece contour line, the actual contour line will be larger than the cutter radius value when machining the inner contour of the workpiece; when machining the outer contour of the workpiece, the actual contour line will be reduced by another tool radius value. Using the method of tool radius compensation, the NC system automatically calculates the tool center path, which makes the tool center deviate from the workpiece contour by one tool radius value, so as to process the contour meeting the drawing requirements. By using the function of tool radius compensation, the tool radius compensation can be changed, and the tool wear and machining error can be compensated to realize the rough machining and finish machining of workpiece.
- The tool length compensation function can change the compensation amount of tool length. The machining of Dongguan Mechanical parts can compensate the length deviation after tool change, change the plane position of cutting process, and control the axial positioning accuracy of the tool.
- The fixed cycle processing function can simplify the processing program and reduce the workload of programming by applying the fixed cycle processing instructions.
- Subroutine function if the same or similar parts of the workpiece are processed, it is written into a subroutine, which is called by the main program, so as to simplify the program structure. CNC machining is divided into several modules according to the working procedure of the machining process. Subprograms are written respectively and called by the main program to complete the processing of the workpiece. This modular program is easy to debug and optimize the processing technology.
