CNC Turning Parts Reasonability Of Processing Requirements
CNC Turning Parts as a highly efficient equipment, in order to give full play to its high performance, high precision and high automation features, in addition to the machine must grasp the performance, characteristics and methods of operation, should also be programmed before the detailed process analysis and determination Reasonable processing technology to get the best processing plan.
First, the contents of CNC turning process
CNC turning process is the use of CNC lathe processing parts used by the sum of the methods and technical means. Its main contents include the following aspects:
(A) select and determine the parts of the NC turning processing;
(B) the part of the drawings for CNC turning process analysis;
(C) the choice of tools, fixtures and adjust the design;
(4) the design of the steps and steps;
(5) calculation and optimization of machining trajectories;
(6) the preparation, verification and modification of CNC turning procedures;
(7) the first piece of test processing and on-site problems;
(8) the preparation of CNC processing technology and technical documents; In short, the NC processing technology content more, and some similar to the ordinary machine tool processing.
Second, the NC turning process analysis
Process analysis is the preparation of CNC machining process. Process development is reasonable or not, the preparation of the program, the machine tool processing efficiency and precision machining parts have an important impact. In order to prepare a reasonable and practical processing procedures,CNC Turning Parts require programmers not only to understand the working principle of CNC lathes, performance characteristics and structure. Master the programming language and programming format, but also master the workpiece processing technology to determine a reasonable amount of cutting, the correct selection of tools and workpiece clamping method. Therefore, we should follow the general principle of the process and combined with the characteristics of CNC lathes, carefully and in detail the CNC turning process analysis. The main contents are as follows: According to the drawings,CNC Turning Parts the processing requirements of the parts and their rationality are determined; the clamping method of the workpiece on the CNC lathe is determined; the processing sequence of each surface, the feeding route of the tool and the selection of the tool, fixture and cutting amount.
(A) part of the map analysis
Part diagram analysis is the primary task of developing a CNC turning process. Mainly dimensioning method analysis, contour geometric elements analysis and accuracy and technical requirements analysis. In addition should also analyze the structural structure and processing requirements of the rationality, select the process benchmark.
1. Dimensioning method analysis
The dimensioning method on the part drawing should be adapted to the machining characteristics of the CNC lathe, with the same reference dimension or the coordinate size given directly. This annotation method is easy to program, but also conducive to design benchmarks, process benchmarks,CNC Turning Parts measurement benchmarks and programming origin of the unity. If there is no uniform design basis for the size of each direction on the part drawing, consider selecting a uniform process basis without affecting the accuracy of the part. Calculate the conversion size to simplify programming calculations.
2. Analysis of contour geometric elements
In manual programming, calculate the coordinates of each node. All geometric elements of the part outline are defined during automatic programming. Therefore, in the part of the map analysis, to analyze the geometric elements of the given conditions are sufficient.
3. Accuracy and technical requirements analysis
The analysis of the precision and technology of the machined parts is an important part of the process analysis of the parts. Only on the basis of analyzing the dimensional accuracy and surface roughness of the parts can the machining method, the clamping method, the cutting tool and the cutting amount Wait. The main contents include: analysis accuracy and technical requirements are complete, is reasonable;CNC Turning Parts analysis of the process of CNC turning accuracy can meet the requirements of the drawings, if not, to allow other processing methods to make up, should be to follow-up process There is a margin; the surface of the drawings with the accuracy of the surface requirements should be completed in a clamping; on the surface roughness requirements of the surface should be used constant line speed cutting (Note: in the turning end, Maximum speed).