CNC milling machine processing parts common problems and solutions

2019-10-03 09:28

CNC milling machine processing parts common problems and solutions

First, the processing plane is uneven, not only

In the machining of parts of CNC milling machines, the finishing of the surface is an important process, and it is also a process that is often done, which requires high quality of the surface. However, in the actual processing, sometimes the plane that is not flat and not only does not meet the requirements.

The main reason for this problem is that during the finishing process, because the performance of the cutting oil can not meet the processing requirements, when the tool feed speed is too fast, the vibration caused by the tool moving quickly will easily leave an uneven path to the machined surface. . Sometimes there is a certain difference between the tool marks between two adjacent tool paths, which is caused by the inconsistent direction of the cutting of the tool. To avoid this problem, the machining method of the full-cut milling machine should be adopted and the special cutting oil should be selected.

Second, the cutting edge of the finishing milling is too obvious

In the machining of workpieces in CNC milling machines, almost every workpiece will require a finishing surface, and in many cases there will be a problem that the seam of the finishing side is too obvious. This is absolutely not allowed, which will seriously affect the appearance of the workpiece.

The main reason for this problem is the improper selection of the position and parameters of the infeed and retraction, and the milling methods provided by different machining software will also be different, but the depth selection of the lower knife and the parameter selection of the accessing knife will be provided. In addition, when non-dedicated cutting oil is used, the oil film is ruptured instantaneously during the processing due to insufficient extreme pressure and anti-wear performance, resulting in scratches on the workpiece. Titanium Machinery is the main product of the company with rotary top, screw, shaft machining, CNC lathe machining, shank shank and collet post. To avoid the above problems, you can adjust it from four aspects. . The first is to select the infeed point correctly, the second is to increase the amount of overlap when the middle knife is cut, the third is to use the full cutting depth when performing the side finishing, and the fourth is to select the finishing. Special cutting oil.

Third, 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 the workpiece, 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 lead to the blade at the corner. .

4. After finishing, leave a burr or a front on the surface or side.

Modern workpiece processing requires more and more surface, and it is not acceptable for the appearance of burrs or spurs. If the boring tool is used to correct the workpiece, 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. Titanium Machinery is the main product of the company with rotary top, screw, shaft machining, CNC lathe machining, shank shank and collet post. In addition, we must also do a good job in planning the cutting path. The secondary polishing path is to first machine the surface, then machine the side, and then machine the surface, so that there is no burr and front, which is useful for workpieces that cannot be polished.

5. 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 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, and it does not affect the speed of calculation or deformation of the workpiece.

  Shandong Zecheng CNC Machinery Co., Ltd. main products are: Longmen machining center, gantry milling machine, vertical machining center, horizontal machining center, pipe thread lathe, CNC lathe, CNC milling machine, machine tool tempering, large CNC lathe, roll lathe, etc. product. welcome to order!


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