October 2021 – Page 3 – CNC Machining & Turning, Milling, Metal parts

Analysis of positioning error in CNC machining

In the machining circuit, parts with high precision requirements are often encountered. Now let’s understand the analysis of positioning error in processing technology

In terms of machining process, the positioning error is divided into many cases. The following shall be paid attention to during operation:

Positioning error refers to the positioning error of a machining accuracy parameter in the machining process of machining a part. It is an integral part of the machining error of the machining accuracy parameter.
A process and positioning scheme can produce different positioning errors for several machining accuracy parameters of the process. Therefore, the positioning errors of these machining accuracy parameters shall be calculated respectively.
The premise of analyzing and calculating the positioning error is to use the fixture to clamp and process a batch of parts with the adjustment method to meet the processing requirements.
The positioning error calculated by analysis refers to the maximum positioning error range that may occur when processing a batch of workpieces. It is a limit value, not a specific value of the positioning error of a workpiece.
The most position change of the design basis for processing a batch of parts relative to the fixture tool adjustment basis is the reason for the positioning error, not necessarily the positioning error.

These points simply understand the analysis and calculation of positioning error. There are many reasons for the error affecting the size in the process of precision CNC machining parts and mechanical parts machining.

About CNC Turniing

ken. tang@chengcg.com

Characteristics of CNC precision machining

Nowadays, in the field of machining industry, ordinary machining equipment can not meet the quality requirements. Now CNC machining equipment replaces the traditional machine tool machining, mainly precision CNC machining and CNC lathe machining; Let’s learn about the characteristics of precision CNC machined parts:

Advantages of CNC machining center in precision machining process:

Precision CNC has high machining precision and high machining quality;
CNC machining can carry out multi coordinate linkage, and can process parts with complex shapes;
When precision CNC machining parts are changed, generally only the NC program needs to be changed, which can save the production preparation time;
Precision CNC machining itself has high precision and rigidity. It can choose favorable processing dosage and high productivity (generally 3 ~ 5 times that of ordinary machine tools);
CNC machine tools have a high degree of automation, which can reduce labor intensity;
CNC machining center mass production, easy to control product quality and save labor operation;

The above is about the characteristics of precision CNC machining. Thank you for your attention!

About CNC Turniing

ken. tang@chengcg.com

The difference between “precision machining” and “machining”

In the field of mechanical parts processing industry, “machining” refers to the process of changing the overall dimension or performance of the workpiece through a kind of mechanical equipment. Can precision machining be used? “Precision machining” belongs to the finishing process in machining. It is divided into cold machining and hot machining according to the temperature state of the machined workpiece. This is the difference between “machining” and “precision machining”!

What is the difference between machining and precision machining in the working process? Precision machining often refers to the processing of parts with special requirements, which should be matched with reasonable processing equipment, such as CNC processing, CNC lathe processing, precision grinder processing, etc; Machining refers to ordinary turning, milling, grinding and other equipment. It can also be said to be one of the differences between “machining” and “precision machining”.

The above is the difference between “machining” and “precision machining”. Thank you for your attention!