CNC lathe processing is a high-precision, high-efficiency automatic machine tool with digital information control parts and tools Mechanical processing method of displacement. It is an effective way to solve the problems of variable varieties, small batches, complex shapes, and high precision of aerospace products and parts, and to achieve high-efficiency and automated processing.

1. Conscientiously implement the relevant provisions of the "General Operating Regulations for Metal Cutting Machine Tools".　

Two, earnestly implement the following general regulations on lathes:

(1) When aligning the workpiece, only use the hand to move the chuck or turn on the lowest speed for alignment, not high-speed alignment.　　

(2) When changing the rotation direction of the spindle, stop the spindle first, and do not change the rotation direction suddenly.　　

(3). When loading and unloading the chuck, only turn the V-belt by hand to drive the spindle to rotate. It is absolutely forbidden to directly drive the machine tool to loosen or tighten it. At the same time, block wooden boards on the bed surface to prevent accidents.　　

(4). The tool should not be installed too long. The gasket should be flat and the width should be the same as the width of the bottom of the tool.　　

(5). It is forbidden to drive the reverse rotation to brake the spindle rotation during work.　　

3. Conscientiously implement the following special regulations concerning some special lathes: 　　

(1), wheel type hexagonal lathe: 　　

CNC precision machining is actually exponential control machining. After the design drawings are written into the program, the computer is connected to the CNC machine tool, and the operation of the CNC machine tool is controlled through programming to complete the machining of precision workpieces. CNC precision machining is mainly suitable for The materials used in the processing of small batches and various types of workpieces, and precision machining, are strictly required, and not all materials are suitable.
CNC precision machining​

Precision machining, not all materials can be precision processed. For example, if some materials with too high hardness exceed the hardness of the machined parts, some special materials are not suitable for precision precision machining.

First of all, the requirements for the hardness of the material. For some occasions, the higher the hardness, the better, but it is limited to the hardness requirements of the machined parts. The machined material should not be too hard. If it is harder than the machine part, it cannot be machined. .

Secondly, the material is moderately soft and hard, at least one grade lower than the hardness of the machine. At the same time, it also depends on the purpose of the machined device and the reasonable selection of the machine.

Advantages:

①The number of tooling is greatly reduced, and complex tooling is not required for processing parts with complex shapes. 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.

②The processing quality is stable, the processing accuracy is high, and the repeat accuracy is high, which is suitable for the processing requirements of aircraft.
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③The production efficiency is higher in the case 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 amount.

④It can process complex profiles 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 is expensive and requires a high level of maintenance personnel.

Finish machining is performed after rough machining self-inspection. After finishing processing, workers should perform self-inspection on the shape and size of the processed parts: check the basic length and width dimensions of the processed parts of the vertical surface; measure the basic point size marked on the drawing for the processed parts of the inclined surface, and the worker completes the self-inspection of the workpiece and confirms with the drawing The workpiece can be disassembled and sent to the inspector for special inspection only after it meets the process requirements.
1. It is not allowed to process bars with curved and rough surfaces.　　

2. When loading the material, the material head must be aligned with the chuck hole, and lightly punched in, not disturbing and knocking.　　

(2) Program-controlled transfer lathe: 　　

Pre-select items related to the machining step program spindle speed, tool post feed, tool post motion trajectory and continuous offsides according to the process requirements. Put the electric knob in the "adjustment" position for test run. After confirming that there is no problem, put the electric knob in the automatic or semi-automatic position to work.