The characteristics of rough machining
Roughing is intended to remove a large amount of material. For example, in the first roughing process, a material removal process is performed until the most likely surface is reached or the workpiece is completely cut. Therefore, the selected roughing tool must be of sufficient length to cut through the workpiece. The main reason for machining to maximum cutting levels is to avoid the formation of thin layers of material that can become entangled around the tool and cause failure. In machining, time is one of the main problems affecting process efficiency. The roughing operation is considered one of the time-consuming processes, especially in mold manufacturing where a large amount of material is removed
It uses CNC machining, according to your programming and installation of good tools, you can carry out high precision rough machining. And the use of CNC machining, can effectively reduce the cutting depth to the deep phenomenon, reduce the risk of tool failure.
CNC rough machining is to allow the subsequent processing to proceed smoothly
CNC rough machining through the design of a good tool route can be accurate processing of steel. CNC rough machining is aimed at steel material for some simple processing, such as the basic appearance of the product or shape cutting, cutting well, will start the next step of processing. Usually, after the steel is machined by CNC, there will be a lot of machining allowance, which will be used in the subsequent heat treatment and finishing
What is finish machining
Finish machining is designed to improve surface finish, dimensional accuracy, and tolerance. Very low feed speed and cutting depth are used for finish machining. Therefore, the cutting rate in finishing is reduced, but the surface quality is improved. Low surface roughness after qualified finishing; therefore, the surface finish is very good. Qualified finishing provides high dimensional accuracy and strict tolerances.
Why uses CNC finish machining
CNC finish machining was given for higher accuracy. It can better control the feed speed and cutting depth. In addition, it can also give better tool control, so that the products can be given high dimensional accuracy and close tolerance. In addition, it could also control the material removal rate (MRR) well. Can effectively avoid causing excessive material loss, unqualified or defective products.