The factors affecting the efficiency of CNC machining and the principle of determining CNC machining line

Engage in CNC processing industry friends all know, CNC machining center is the predecessor of CNC milling machine, but at present CNC processing and CNC milling machine is the biggest difference between CNC machining center with automatic exchange processing tool function. The CNC machining tool storehouse is equipped with different tools for different purposes. After the workpiece is clamped, the machining tool on the spindle is changed by changing the tool to realize a variety of processing functions.

Numerical control machining in the processing process of the workpiece, maintenance work is very important, because it is not only related to the machining accuracy of the workpiece, but also directly affect the processing efficiency of the numerical control machining center. The maintenance and operation points are as follows:

1, before processing to determine the processing technology, figure out the content of the process card, especially to determine the shape of the parts to be processed, but also know the content of the next processing program.

2, workpiece blanks should be measured before clamping whether the size meets the requirements, must carefully and carefully check whether the blank placement is consistent with programming.

3, rough machining after the completion of maintenance, to determine whether the workpiece is correctly divided? Is there any dislocation loosening of the workpiece? Does the size of the machining site to the reference point meet the drawing requirements? The size of the mutual position of the machining parts should be measured timely and accurately after checking the shape scale of the rough machining.

4. Semi-finishing or finishing can only be carried out after rough machining overhaul. After finishing, technicians should check the shape and size of the processing parts, mainly check the vertical plane and inclined plane processing parts and the size of the base points marked on the measurement drawings for approval.

5. After the completion of manual maintenance, the workpiece can be removed and sent to the quality inspector for special inspection after confirming that it meets the relevant requirements with the drawing process.

After understanding some factors affecting the efficiency of CNC machining, as a professional CNC machining center operator should be more clear about the principle of CNC machining lines. CNC machining center feed machining route refers to the turning tool from the tool point (or the fixed origin of the machine tool) began to move, until the return to the point and end the machining program through the path, including the path of cutting and cutting tool cutting, cutting out and other non-cutting empty travel path.

CNC machining finishing feed line is basically along its parts contour sequence, therefore, determine the feed line of the focus of the work is to determine rough machining and air travel of the feed line. In numerical control machining in numerical control lathe processing, the determination of the processing route should generally follow the following principles.

(1) the precision and surface roughness of the processed workpiece should be guaranteed.

(2) Shortest processing route, reduce empty travel time, improve processing efficiency.

(3) Try to simplify the workload of numerical calculation, simplify the processing program.

(4) Subroutine should be used for some programs that are repeatedly used.