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August 09, 2023
Figure 1 CNC lathe turning face processing route
The processing line of the CNC Turning lathe turning circle is shown in Figure 2 ABCDEF, where A is the tool change point, B is the entry point, CDE is the tool cutting path, E is the cut-out point, and F is the retraction point.
Figure 2 CNC lathe turning machining line
2 CNC Milling machine processing routeMilling cutters side milling To avoid the normal cutting and cutting out of the outer contour of a part when milling the outer contour of a plane part, as shown in Fig. 3, it should be cut or cut along the tangential extension of the outer contour curve, so as to avoid the tool Blade cuts produced when cutting in or out to ensure a smooth transition of the part's surface. When milling closes the inner contour surface, the tool also feeds and retracts along the tangential direction of the contour line. As shown in Figure 4, ABC cuts the contour path for the tool tangentially, and CDC closes the inner contour path for the tool cutting workpiece. CEA Cut the contour trajectory for the tool tangentially.
Figure 3 Processing route of the outer contour milling
Figure 4 Processing route of inner contour milling
3-hole machining positioning routeReasonably arranging the hole machining positioning path can improve the position accuracy of the hole. As shown in FIG. 5, four holes A, B, C, and D are processed in the XY plane. When the hole processing route is arranged, attention must be paid to the consistency of the positioning directions of the holes. That is to say, the unidirectional approach positioning method is used to move the C-hole to the left after moving a certain distance, and then return to the machining D-hole. This positioning method avoids the positioning error caused by the backlash of the transmission system and improves the D-hole and others. Positional accuracy between holes.
Figure 5 hole processing positioning route
5. Workpiece installation and fixture selection 1) Installation of the workpiece 1 It strives to meet the basic unity principle of design basis, process standard, installation datum, and workpiece coordinate system. 2 Decrease the number of mountings, and make it possible to machine all surfaces to be machined after one set-up. 3 Use special fixtures as much as possible to reduce the time taken to install and adjust the machine. 2) Selection of fixtures According to the processing characteristics of CNC machine tools, coordinate the three relationships between the fixture coordinate system, the machine coordinate system and the workpiece coordinate system, in addition to the following points: 1 Process parts in small batches and use combination fixtures, adjustable fixtures, and other universal fixtures as much as possible. 2 Batch production considers the use of special fixtures for easy loading and unloading. 3 The positioning of the fixture and the components of the clamping mechanism do not affect the movement of the tool. 4 The loading and unloading of parts should be convenient and reliable. Batch production can use pneumatic clamps, hydraulic clamps and multi-station clamps.The above is the GZ:CNC machining process design we have listed for you. You can submit the following form to obtain more industry information we provide for you.
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