CNC precision machining you don't know the little knowledge here!
CNC precision machining is actually exponential control machining, first write the design drawings into the program, and then connect the computer to the CNC machine tool, control the operation of the CNC machine tool through programming, complete the processing of precision workpieces, CNC precision machining is mainly suitable for small batches, a variety of workpieces processing, precision machining, the material it uses, are strict requirements, not all materials are suitable.
Precision machining, not all materials can be precision machining, such as some hardness of too large materials if more than the hardness of processing parts, some special materials are not suitable for precision machining.
The first is the requirement for the hardness of the material, for some occasions, the higher the hardness of the material, the better, but limited to the hardness requirements of the processing machine, the processed material can not be too hard, if it is harder than the machine can not be processed.
Secondly, the material is soft and hard, at least one grade lower than the hardness of the machine, and at the same time, it depends on the role of the processed device and the reasonable selection of materials for the machine.
Merit:
(1) Greatly reduce the number of tooling, processing parts with complex shapes do not require complex tooling. If you want to change the shape and size of the part, you only need to modify the part processing program, which is suitable for new product development and modification.
(2) Stable processing quality, high processing accuracy, high repeatability, adapt to the processing requirements of aircraft.
(3) High production efficiency in the case of multi-variety, 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 optimal cutting amount.
(4) It can process complex surfaces that are difficult to process by conventional methods, and even process some unobservable processing parts.
The disadvantage of CNC machining is that the machine tool equipment is expensive and requires maintenance personnel to have a high level.
Finishing is carried out after roughing self-inspection. After finishing, workers should self-check the shape and size of the processed part: test the basic length and width of the processing part of the vertical plane; The processing part of the inclined surface measures the size of the base point marked on the drawing, and the worker completes the workpiece self-inspection, and only after confirming that it meets the drawings and process requirements can the workpiece be removed and sent to the inspector for special inspection.