Aluminum precision machining parts
The precision aluminum parts machining center is a CNC machine tool with a tool magazine and can automatically change the tool, and can perform various processing operations on the workpiece within a certain range. It was developed from CNC milling machines. The difference from CNC milling machines is that it has the ability to automatically exchange machining tools. By installing tools for different purposes on the tool magazine, the machining tools on the spindle can be changed through the automatic tool changer in one clamping to achieve a variety of machining functions.The precision aluminum parts processing center is a highly complex processing equipment. Before the workpiece processing program is compiled, the processing technology must be confirmed according to the design requirements and processing content of its drawings. Generally speaking, the confirmation criteria of the machining process should follow the following basic criteria. Let us briefly understand the criteria for the machining process of the precision aluminum parts machining center.
Four principles of processing technology of precision aluminum parts processing center
1. The machining principle of first roughing and then finishing In general, in order to ensure the machining quality of the workpiece, we divide the machining of the workpiece into two stages: rough machining and finishing, and add a semi-finishing stage for workpieces with higher machining accuracy. This guideline should also be followed when performing CNC machining. When the workpiece is roughed, most of the machining allowance can be quickly removed, the number of tool passes can be reduced as much as possible, and the roughing time can be shortened; when finishing, the machining accuracy and surface quality of the workpiece can be ensured. Therefore, the final summary of the workpiece during finishing should be It is made by continuous finishing with one knife at the end of the z.
2. The principle of one-time clamping and positioning, one-time clamping to realize multi-process machining of workpieces is the basic processing feature. Therefore, when confirming the machining process of the workpiece, various machining processes should be concentrated to the greatest extent. Minimize the number of setups as much as possible to reduce unnecessary positioning errors and repetitive setup processes.
3. The processing principle of the inside and the outside. When the workpiece to be processed has both the inner and outer surfaces and needs to be processed, when organizing the processing sequence, the inner and outer surfaces of the workpiece should be processed first and then the outer surface, such as staged processing. , and rough machining of the inner and outer surfaces should be carried out first, and then the finishing of the inner and outer surfaces should be carried out.
4. The machining principle of face first and then hole As we said earlier, the precision aluminum parts machining center is a compound machining machine, which can not only perform turning but also boring. When there are both planes and holes on the workpiece to be machined, it should be carried out in the order of turning the plane first and then boring. Due to the large cutting force when turning the plane, the workpiece is prone to deformation. First, the plane is turned and then the hole is boring, so that it can recover for a period of time. , and then boring after it recovers and deforms, which is beneficial to ensure the machining accuracy of the hole.
