Optimization method of CNC machining machine tools based on "x"-shaped aviation thin-walled standard specimens

A standard part, aviation technology, applied in the field of CNC machining machine tool selection based on "X"-shaped aviation thin-walled standard test piece, can solve the problem of not fully reflecting the machining performance of the machine tool, save costs and resources, and meet the machining accuracy. desired effect

Active Publication Date: 2020-03-20
UNIV OF SHANGHAI FOR SCI & TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In summary, the main disadvantages of the existing identification methods are: the current error identification methods for CNC machine tools cannot fully reflect the cutting performance of the machine tool, and mainly identify the static factors of the machine tool under the condition of no-load and low speed.
No matter which of the above identification methods is to process the parts with the machine tool to be processed first, and then measure the accuracy of the parts after the processing is completed, or test the accuracy of the parts during the processing, which is far from meeting the needs of modern processing

Method used

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  • Optimization method of CNC machining machine tools based on "x"-shaped aviation thin-walled standard specimens
  • Optimization method of CNC machining machine tools based on "x"-shaped aviation thin-walled standard specimens
  • Optimization method of CNC machining machine tools based on "x"-shaped aviation thin-walled standard specimens

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Embodiment

[0048] Such as figure 2 , as shown in 3, the cutting process of the "X"-shaped aviation thin-walled standard series test piece A based on the present invention is to process the b surface first, and when the b surface is finished, turn it over 180 °, and in the cavity of the test piece A Put the "X"-shaped new aviation thin-walled standard series support B, such as Figure 4 After the positioning as shown is completed, surface a is processed again.

[0049] The processing complexity coefficient is composed of the characteristic processing stiffness and the average value ΔK and the dynamic stiffness and the average value ΔC. The characteristic processing stiffness and the average value are mainly used to evaluate the ability of the part to be analyzed to resist deformation comprehensively. The smaller the coefficient, the weaker the ability , the higher the processing complexity.

[0050] Characteristic processing stiffness and average value: analyze the processing simulatio...

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Abstract

The invention relates to an X-shaped aerial thin-walled standard test piece-based numerical control machining machine tool optimization method. The method comprises the specific steps of (1) performing finite element simulation cutting analysis for to-be-machined parts, and calculating machining difficulty coefficients of the to-be-machined parts; (2) through a mapping relationship table of the machining difficulty coefficients and workpiece complexity levels, performing division on the machining difficulty of the parts; and (3) through the level division of the machining difficulty coefficients of the to-be-machined parts, selecting corresponding machine tools about to perform machining, so that not only the use of machine tools with low machining precision for machining but also the use of machine tools with excessively high precision can be avoided. The machining precision requirements of the parts can be met; and the costs and resources can be greatly reduced and saved.

Description

technical field [0001] The invention relates to a multi-variety and small-batch processing method for key parts such as aerospace, automobile, ship and nuclear power, especially a method for comprehensively detecting the processing accuracy of a numerically controlled machine tool. Background technique [0002] Five-axis linkage CNC machine tools play a huge role in the status and overall technical level of advanced manufacturing industries such as aerospace and automobile manufacturing. Therefore, high requirements are put forward for the machining accuracy of five-axis CNC machine tools. There are mainly direct measurement method and indirect measurement method to detect the machining accuracy of CNC machine tools. The direct measurement method is to use various measurement accuracy tools to directly measure the machining accuracy of the machine tool; the indirect measurement method is basically to use the machine tool to measure the standard mechanical test piece. Machin...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G06F30/23G06F30/15G06F30/17G06Q50/04
CPCG06F30/15G06F30/23G06Q50/04Y02P90/30
Inventor江小辉张振亚李郝林刘晓
OwnerUNIV OF SHANGHAI FOR SCI & TECH