Yesterday we gave you a brief introduction to the common problems and solutions of CNC milling machine parts. Today, I will finish the rest for you.
1st. the change of the knife when finishing milling
In normal machining and high-speed machining, the tool needs to be replaced. If the parameter adjustment is not paid attention to during the tool change operation, obvious traces will appear, which will seriously affect the appearance of the workpiece.
When finishing the bottom surface or the side surface, the occurrence of the knife mark is a common phenomenon. Many times people think that this is an inevitable error. In fact, this can be completely avoided. In order to solve this problem, in the machining of parts, the finishing of the concave corner needs to be replaced by a small tool. Since it will be oscillated during the machining process, it will easily produce the mark of the knife at the corner.
2nd. After finishing, leave a burr or a front on the surface or side.
Modern workpiece processing is increasingly demanding on the surface, and it is not acceptable for the appearance of burrs or spurs. If the squeegee is used to correct the parts, it will affect the accuracy and size of the workpiece. It is used directly after milling and no longer needs to be polished later. However, in actual production, there will still be a large number of burrs and fronts.
To solve this problem, you must pay great attention to the use of the tool. Use a dedicated tool to ensure sharp cutting. In addition, we must also do a good job in the planning of the cutting path, and increase the secondary finishing path, which is to first machine the surface, then machine the side, and then machine the surface, so that no burrs and fronts can be ensured. Polished workpieces are useful.
3rd. Finishing of special shaped workpieces
For the finishing of some special-shaped workpieces, the software usually has a fitting error. Sometimes, if the calculation error is too large, the deformation of the part will affect the appearance. To solve this problem, it is necessary to start from the software and control the error. This value is relatively reasonable, and it does not affect the speed of calculation or deformation of the part.
