Processing precision and processing efficiency are the two elements that manufacturers pay most attention to when using cnc 1165 machining center. Many friends reported that in normal processing operations, the accuracy of the workpiece is higher than the efficiency of the work, and the accuracy of the workpiece is high and the accuracy of the workpiece cannot be guaranteed. Can we take these two points into consideration at the same time? In fact, it is possible. In addition to the high configuration and high performance of the machining center itself, attention should also be paid to the selection and installation of tools, the setting of machining routes, the reasonable selection of cutting volume, programming skills, and rapid control of accuracy.
1. The correct selection and installation of tools
Whether it is an ordinary machine tool or our CNC machining center, the tool is directly acting on the workpiece.
2. Reasonable setting of processing routes
The processing route and processing sequence are the important basis for optimizing the programming of processing, which are generally considered from the aspect of feed method and processing path. When performing CNC milling of a workpiece, it is necessary to select a suitable feed method based on the process requirements of the workpiece to ensure the cutting accuracy and processing efficiency of the workpiece. When milling the outer contour of a plane workpiece, the cutting-in and cutting-out route of the tool should be arranged. Try to cut in and out along the extension line of the contour curve to avoid knife marks at the junction. At the same time, in the milling process, you should choose down milling or up-cut milling according to the work piece. Under normal circumstances, Chenghai CNC recommends that you choose up-cut milling.
3. Reasonable choice of cutting amount
The cutting volume of the machining center is an important part of the CNC machining process. The cutting volume is an important parameter of the movement and feed motion of the machining center. It has a profound impact on the machining accuracy of the workpiece, the efficiency of the workpiece, and even the wear of the tool. The basic principle of the setting is: if the rigidity of the workpiece allows, the roughing takes a larger cutting depth, back-cutting amount and feed amount. For fine processing, a smaller depth of cut is generally selected to obtain a higher surface quality.
Four, programming skills
Machining center programming is the basic work to realize CNC machining, and it is also the soul of CNC machining. The quality of workpiece processing programming directly affects the final processing accuracy and processing efficiency of the machine tool.
1. Flexible use of main procedures and subroutines
In the processing of complex molds, one mold and multiple parts are generally used for processing. Generally, the subroutine will be called repeatedly on the main program until the processing is completed. It can not only ensure the consistency of the processing size but also improve the processing efficiency.
2. The cumulative error cannot be ignored
The error of the machining center does not actually refer to the error of the completion of a workpiece, but the error after the completion of batch processing. Because the incremental method is generally used to program the workpiece at present, the machining is performed based on the previous point, so that the continuous execution of multiple programs will inevitably produce a certain cumulative error. Therefore, use absolute programming as much as possible when programming, so that each program segment is based on the origin of the workpiece, so that the cumulative error of the CNC system can be reduced and the machining accuracy can be guaranteed.
