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How to proceed to the next step after selecting the parts or process content suitable for CNC lathe processing?

2020-06-05 10:06

CNC lathe collet manufacturers knocked on the blackboard: how to proceed to the next step after selecting the parts or process content suitable for CNC lathe processing?


CNC lathe and turning center is a kind of high precision and high-efficiency automatic machine tool. It has a wide range of processing performance and can process linear cylinders, diagonal cylinders, circular arcs, and various threads. It has various compensation functions of linear interpolation and circular interpolation and has played a good economic effect in the mass production of complex parts.


LONNZ CNC lathe collet fixture concentricity, conicity, smoothness, dimensional accuracy, heat treatment process, raw materials have strict quality standards, high collet accuracy, long service life, reasonable price, and good reputation, is the localization of imported accessories A model of success . So how to proceed to the next step after selecting the parts or process content suitable for CNC lathe processing?


1. Structural manufacturability analysis: The structural manufacturability of the parts refers to the adaptability of the parts to the processing method, that is, the designed part structure should be easy to process and form, with low cost and high efficiency. When processing parts on a CNC lathe, the rationality of the part structure should be carefully examined according to the characteristics of CNC turning. During structural analysis, if problems are found, the designer or relevant department should generally be asked for advice and suggestions for modification. When turning parts on a CNC lathe, the tool only moves in a plane, its forming movement is relatively simple, and the tool trajectory is not too complicated. In the process of structural technical analysis, for parts such as small deep holes, thin-walled parts, narrow and deep grooves that allow the tool to move in a small space and have poor structural rigidity, special consideration should be given to the tool path, tool type, tool angle, cutting amount when arranging the process, Clamping methods and other factors to reduce tool loss, improve machining accuracy, surface quality, and labor productivity.


2. Analysis of outline geometric elements: When analyzing the outline geometric elements of the part graphics, the main job is to use the basic knowledge of mechanical drawing to distinguish the fixed size and positioning size of the given geometric elements in the part drawing, and determine the geometric elements (straight lines, arcs), Curves, etc.) to prevent the "intersection" from being mistaken for the "tangent" relationship, but "tangent" is treated as "intersection".


As an important part of the process analysis, when analyzing the geometric elements of the profile, you should also calculate the node coordinates that are not directly given in the drawing and must be known when programming. On the one hand, it is to check the correctness of the drawing, and on the other hand, to prepare for the subsequent programming work.


3. Analysis of precision and technical requirements: Analysis of the precision and technical requirements of the parts to be processed can help us choose reasonable processing methods, clamping methods, feed routes, cutting amounts, tool types and angles, and other process contents.


The analysis of accuracy and technical requirements mainly includes:


A.Whether the analysis accuracy and technical requirements are complete and reasonable;


B. Analyze whether the machining precision of CNC turning in this process can meet the requirements of drawings. If it can not be achieved, other measures (such as grinding) need to be used to make up, then a margin should be left for the subsequent process;


C.Locate the surfaces with position accuracy requirements on the drawings. These surfaces should be processed in one clamping as much as possible;


D. For surfaces with high surface roughness requirements, the constant linear speed function provided by the machine tool should be determined.


high precision CNC lathe collet