1. The difference between high speed machining and traditional machining

2. The traditional machining process uses low speed, high power spindle, low feed speed and large cutting amount. Because the surface of the tool and the workpiece bear a large cutting force, high heat will be generated in the tool and the workpiece, the thermal deformation of the workpiece is very large, and the thermal wear life of the tool becomes shorter. In this way, the traditional machining method takes a long time, and the machining accuracy and finish are poor, The tool loss is large.

3. High speed machining method adopts small cutting amount and feed depth, which is 5 ~ 10 times of the cutting speed of traditional machining method. This means that the spindle bearing, tool and workpiece bear less cutting force. Due to the high cutting speed, most of the heat generated by machining is taken away by iron chips, the workpiece can have very good surface finish and machining accuracy, and the machining time can be greatly shortened.

4. Effective cooperation between high speed machine tool and traditional machine tool

5. High speed machining is the inheritance and development of traditional machining rather than abandonment. The most scientific way to use is: after the traditional processing method is used to complete the large cutting amount (roughing) process, the workpiece with the remaining machining allowance of about 0.5mm is quickly completed on the high-speed machining machine, which has many advantages: there are many heavy cutting machines, the processing cost is very low, the cutting tool is cheap, and the processing cost can be saved greatly. After rough machining, the workpiece is close to forming, and the cutting amount is small. In this way, the advantages of high-speed machining machine can be brought into full play. Rapid prototyping has high dimensional accuracy, and the workpiece has very good surface finish, saving polishing time, and sometimes achieving smooth surface effect.

High speed machine precision:

1. Numerical control high-speed machine has high speed and large inertia impact, so the linear guide rail has higher requirements (some use hard rail, which is not discussed here). On the other hand, the lead screw requires pre tension at both ends, and the nut pre pressing adopts double nuts to clear the axial clearance. Recently, the technology of Japan is relatively professional. THK, NSK and Taiwan have also made some progress in recent years. However, most of the high-end machine tools are made in Japan. These parts are the guarantee of precision.