Benchmark issues for precision machining in machining factories

Research the relative relationship between precision machined surfaces. Datum is used to determine the position of other points, lines, and surfaces on a part. Precision machining is composed of several surfaces, and the datum can be divided into two categories: design datum and process datum. The following is a detailed explanation.

1. Precision machining design benchmark: The benchmark used to determine the positions of other points, lines, and surfaces on the part drawing. For precision machined shaft sleeve parts, end face A is the design benchmark for end faces B and C. The design benchmark for each outer circle and inner hole is the axis of the part, and the axis of the inner hole is the benchmark for radial runout of the outer circle.

2. Precision machining process: The benchmark used in the processing and assembly process, which is divided into assembly benchmark and positioning benchmark according to different purposes. The reference used during assembly to determine the position of a part in a component or product. The measurement benchmark is used to verify the size and position of the machined surface, and the axis of the inner hole is the measurement benchmark for checking the radial runout of the outer circle; Surface A is the measurement reference for inspecting the length L, dimension l, and.

3. Further expansion of precision machining technology With the advancement of CNC machine tool technology, precision machining technology is becoming increasingly mature, and the efficiency of precision machining is greatly improved through the combination of turning and grinding.

4. There has been a new breakthrough in precision machining technology, which has been more reflected in the performance of CNC systems, and intelligence has improved the functionality and quality of machine tools.

5. Precision machining technology has made the flexible combination of robots and hosts more efficient, and the flexible combination of robots and hosts has been widely applied. Precision machining technology and flexible units of machining centers and flexible production lines have begun to be applied.