The feed machining route of CNC lathe refers to the path that the tool moves from the point of alignment (or fixed origin of machine tool) until it returns to the point and ends the machining procedure, including the path of cutting and the path of cutting tool cutting and cutting out.
The feed route of finishing is basically carried out in the order of the outline of parts. Therefore, the key to determine the feed route is to determine the feed route of rough machining and empty stroke.
In the NC lathe processing, the determination of the processing route should follow the following principles.
① The accuracy and surface roughness of the workpiece to be processed shall be guaranteed.
② The shortest processing route, reducing the time of empty travel and improving the processing efficiency.
③ The work of numerical calculation and the processing procedure are simplified as much as possible.
④ For some reuse programs, subroutines should be used.
CNC advantages and disadvantages CNC machining has the following advantages:
① A large number of tooling is reduced, and complex tooling is not needed for parts with complex shapes. To change the shape and size of parts, only the part processing procedure needs to be modified, which is suitable for the development and modification of new products.
② The machining quality is stable, the processing precision is high, the repetition precision is high, which is suitable for the machining requirements of the aircraft.
③ The production efficiency is high under the condition of multi variety and small batch production, which can reduce the time of production preparation, machine tool adjustment and process inspection, and reduce the cutting time due to the use of the best cutting quantity.
④ The complex profile which can be processed by conventional methods is difficult to process, and even some parts which cannot be observed can be processed.
The disadvantage of NC machining is that the machine tool equipment is expensive, and it requires the maintenance personnel to have a high level.
