The editor takes everyone to understand the benchmark problem of precision machining

As the current era is becoming more and more high-tech, very new products have also appeared, and precision machining has also been reused by many people. So, do you know the issue of its benchmark? Let's take a look.
1. Beijing Precision Machining Design Benchmark
The datum used to determine the position of other points, lines and surfaces on the part drawing is called the design datum. For precision machined bushing parts, the design reference for each outer circle and inner hole is the axis line of the part, end face A is the design reference for end faces B and C, and the axis of the inner hole is the reference for the radial runout of the outer circle.
2. Craft
The benchmark used in the processing and assembly of Beijing precision machined parts is called the process benchmark. Process benchmarks are divided into assembly benchmarks, measurement benchmarks and positioning benchmarks according to different uses.
(1) Assembly datum The datum used to determine the position of the part in the component or product during assembly is called the assembly datum.
(2) Measurement datum The datum used to inspect the size and position of the processed surface is called the measurement datum. , The axis of the inner hole is the measurement datum for testing the radial runout of the outer circle; the surface A is the measurement datum for testing the length L and the size l.
1. Further expansion of machine tool compound technology. With the advancement of CNC machine tool technology, compound processing technology is becoming more and more mature, including milling-turning compounding, turning-milling compounding, turning-boring-drilling-gear processing compounding, turning-grinding compounding, forming compounding processing, special compounding processing And so on, the efficiency of precision machining is greatly improved.
2. There are new breakthroughs in the intelligent technology of Beijing CNC machine tools, which have been more reflected in the performance of the CNC system. Such as: automatic adjustment of interference and anti-collision function, power-off protection function of workpiece automatically exiting the safe area after power failure, machining part detection and automatic compensation learning function, intelligently improve the function and quality of the machine tool. There is also the advent of a five-axis linkage high-speed machining center.
3. The robot makes the flexible combination more efficient. The flexible combination of the robot and the host is widely used, which makes the flexible line more flexible, the function is further expanded, the flexible line is further shortened, and the efficiency is higher. Robots and machining centers, turning and milling compound machine tools, grinders, gear processing machine tools, tool grinders, electrical processing machine tools, sawing machines, stamping machine tools, laser processing machine tools, water cutting machine tools and other forms of flexible units and flexible production lines have begun to be applied.
The above is the introduction of the editor on the benchmark issues of precision machining. If you have any questions, please consult this site, website address: http://www.dghongye.com