Four common processing methods for CNC parts processing
Posted by Admin
With the rapid development of high-tech and independent innovation, the application of CNC machining is becoming more and more common, so what are the common CNC machining methods?
1. Flat-faced hole system parts: When processing computer gong CNC lathes (such as computer gong planers) that are manipulated by common geometric figures, when selecting technical lines, the key considerations are the two standards of processing precision and high processing efficiency.
2. Plan outline parts: When using electronic computers to process plan outline parts, pay attention to:
Drilling azimuth control inside and outside: tangential drilling, leaving dents on the surface of the workpiece; leveling in and cutting out, leveling the surface of the workpiece.
Selection of one-shot approximation method: When a CNC lathe with parallel lines and arc-shaped tool radius compensation functions is used to process irregular curve contours, it is only necessary to use parallel lines or arc-shaped fine lines to approximate the machining contour (this deviation is called deviation one-time approximation). ), when approaching, the workpiece error should be within the standard range, and the number of pieces should be small.
3. Three-dimensional contour parts; the following aspects should be considered when machining three-dimensional contour parts: Considering the strength and surface quality of the workpiece: after the workpiece is subjected to force, the compressive strength is low, and the surface quality is the best.
Taking into account the tool radius compensation effect of the CNC lathe: when the skewed surface of the flat beam is processed, if the CNC lathe is three-axis linkage, a high-efficiency ball cage turning tool should be used; if the CNC lathe is four-axis linkage, Then high-efficiency Z-large internal hole cutting can be applied.
4. Trochoidal parts: The machining of rotating parts is usually carried out with CNC lathes or CNC grinders on a computer. What should be paid attention to in this link?
Considering the high processing efficiency: when processing on the lathe, the processing capacity is usually relatively large, and the roughing method should be effectively established to improve the processing efficiency. In the specific programming, it is generally not recommended to apply the cyclic system command (otherwise, there are too many tools under the working cutting rate). A stronger approach is to use fine turning to remove material as early as possible, followed by boring.
Considering the compressive strength of sharp knives: low-strength CNC inserts are often used to machine small grooves on computer lathes.