How To Solve Common Problems Of CNC Milling Machine Parts

With the rapid development of social production and science and technology, mechanical products are becoming more sophisticated and complex, and the requirements are frequently modified, especially for mechanical parts required in aerospace, shipbuilding, military and other fields, which require high precision, complex shapes, and small batches. Titanho machinery is the company's main products based on slewing tip, screw, shaft processing, CNC lathe processing, tool holder, chuck adapter, these products require frequent modification or adjustment of equipment, ordinary machine tools or a high degree of specialization Automated machine tools can no longer meet these requirements. In order to solve the above problems, machining centers came into being.

This new machine tool has the advantages of strong adaptability, high machining accuracy, stable machining quality and high efficiency. It integrates various technical achievements such as electronic computer, automatic control, servo drive, precision measurement and new mechanical structure, etc. It can complete the seamless transfer between the various processes of the workpiece through the setting of the processing program. In other words, the CNC machining center can complete a variety of machining processes including milling, drilling, tapping, boring, reaming, etc. on a single device by changing different tools.

We know that the entire machining of the CNC center is controlled by the CNC system. The machine tool must not be terminated at random when executing the machining program. If some problems occur, such as tool wear and excessive machining allowance, it is not like ordinary machining equipment. That way you can stop and adjust at will. Therefore, the machining tools it uses are more stringent than ordinary machining equipment. The following briefly introduces common problems and solutions of CNC centers:

1. The processing plane is not flat and not only

In the machining of parts of CNC milling machines, the finishing of the surface is an important process, which is also a frequently-used process, which requires a higher quality of the surface. 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 speed 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 the machining of workpieces of CNC milling machines, 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 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 knife and the parameter selection of the exit and exit. In addition, when using non-dedicated cutting oil, due to insufficient extreme pressure anti-wear performance, the oil film breaks instantly during processing, resulting in scratches on the workpiece. Titanho machinery is the company's main products based on slewing tip, lead screw, shaft machining, CNC lathe machining, tool holder, chuck adapter, etc. If you want to avoid the above problems, you can make relevant adjustments from four aspects. . The first is to select the feed point correctly, the second is to add an overlap when the middle cutting is necessary, the third is to use the full-cut deep processing for the side finishing, and the fourth is to use the finishing processing. Special cutting oil.

 3. Traces of tool change during fine milling

 During ordinary machining and high-speed machining, tool replacement is required. If you do not pay attention to the relevant parameter adjustment during the tool change operation, obvious marks will appear, which will seriously affect the appearance of the workpiece.

 When finishing milling the bottom surface or the side surface, it is a common phenomenon that knife marks appear. Many people think that this is an unavoidable error. In fact, it is completely avoidable. In order to solve this problem, in the machining of the workpiece, the finishing of the recessed corner needs to be replaced with a small tool. Due to the force and swing during the machining process, it will be easy to produce a mark at the corner. .

 4. Burrs or fronts are left on the surface or side 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, and 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. Titanho machinery is based on the company's main products with rotary tops, lead screws, shaft machining, CNC lathe machining, tool holders, chuck adapters. 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.

5.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, it will cause deformation of the workpiece and affect the appearance. To solve this problem, it is necessary to start from the software and control the error. This value is relatively reasonable. It does not affect the calculation speed and will not cause deformation of the workpiece.