CNC machining technology division and the step
CNC machining technology division and the step
Partition (1) step
1) to position the part clamping mode split step
Due to the different structural shapes of each part, the technical requirements of the various different surfaces, so in processing, which can vary targeting. When the general shape of machined parts, less-shaped positioning; positioning shape to shape in the machined parts. According to different targeting methods to divide the processes.
2) Press the rough and fine machining process is divided
According to the machining accuracy, rigidity and deformation and other factors to divide step, according to rough and finish the principle of separating step to be divided, that is, first roughing, then finishing. At this point you can use different tools or different tool for processing. Usually in a single installation, do not allow the rear surface of the processing is complete, then a part of the processing of parts other parts of the surface.
To reduce the number of tool changes, shortening the running time of air travel and reduce unnecessary positioning error, you can use the same tool according to centralized processing step approach to machining process is divided parts. Whenever possible, use the same tool to be processed can be processed all the parts, and then replace the other to the other parts of the tooling parts. In the special machine tools and machining centers often use this method.
Partition (2) of step
Dividing step from the main machining accuracy and production efficiency two aspects to consider. In a step often they require different cutting tools and cutting parameters for different surface processing. In order to facilitate analysis and description of complex parts, in the process subdivided into step. The principle of step division is:
1) the same surface by roughing, semi-finishing, finishing in order to complete, or all of the press after the first rough machined surface finishing separately.
2) there are parts for both the milling plane Boring surface, according to the plane after the first milling boring processing. Because this method is divided step, it may be provided to improve hole machining accuracy. Because the cutting force is large, easily deformed parts milling plane. Milling boring after the first plane, so that it can have some time to recover deformation and deformation caused thereby reduce the impact on the accuracy of the hole.
3) by the use of the tool to divide step. Some machine tool rotary table tool change time is shorter than the time, you can use the tool by using the division step to reduce the number of tool changes, improve processing efficiency.
