1.The processing plane is not flat

In CNC milling parts, the finishing of the surface is an important process, and it is also a frequently-used process, which requires higher surface quality. However, in actual processing, sometimes uneven and flat surfaces are obtained, which do not meet the requirements.

The main cause of this problem is that during the finishing process, because the performance of the cutting oil cannot meet the processing requirements, when the tool feed rate is too fast, and the vibration caused by the tool when it moves quickly, it is easy to leave an uneven path on the machining surface. Sometimes the tool marks between two adjacent tool paths will have a certain difference, which is caused by the inconsistent cutting direction of the tool. To avoid this problem, you should use the full-cut milling method and use a special cutting oil.

2.The cutter marks on the side of the precision milling are too obvious

In CNC milling parts, almost every workpiece will require precision milling on the side, and many times there will be too obvious a problem that the cutting marks on the side of the precision milling will be too obvious. This is absolutely not allowed and will seriously affect the appearance of the workpiece.

The main cause of this problem is the improper selection of the positions and parameters of the feed and retract tools, and the milling methods provided by different processing software will be different, but they will provide the choice of the depth of the lower tool and the parameter selection of the in and out of the tool. In addition, when using non-dedicated cutting oil, due to insufficient extreme pressure and anti-wear performance, the oil film breaks instantly during processing, resulting in scratches on the workpiece. Ti Hao Machinery is the company's main products based on slewing tip, lead screw, shaft machining, CNC lathe machining, tool holder, chuck adapter, etc. To avoid the problems raised above, you can make relevant adjustments from four aspects . The first is to select the correct feed point, the second is to add an overlap when the middle cutting is necessary, the third is to use the full-cut deep processing for side finishing, and the fourth is to use the finishing Special cutting oil.

3. Burrs or fronts are left on the surface or sides after finishing

Modern workpiece processing has higher and higher requirements on the surface, and it is unacceptable for the appearance of burrs or batches. If the workpiece is modified with a file, the accuracy and size of the workpiece will also be affected. It can be used directly after milling, no need for subsequent grinding. However, in actual production, there will still be a lot of burrs and fronts.

To solve this problem, we must pay great attention to the use of tools, and use special tools to ensure sharp cutting. In addition, it is also necessary to do a good job in planning the tool path. The sub-finishing tool path is to first process the surface, then the side, and then the surface. This can ensure that there are no burrs and sharp edges, which is useful for workpieces that cannot be polished.

4. For the finishing of special shape 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 workpiece will be deformed and the appearance will be affected. To solve this problem, it is necessary to start from the software and control the error. This value is relatively reasonable, which does not affect the calculation speed and will not cause deformation of the workpiece.