基于GD&T的钛合金铸件尺寸系统分析

A Systematic Dimension Analysis Method for Titanium Alloy Based on GD&T

针对熔模铸造行业因产品过程尺寸分析不系统导致的收缩率数据误差较大及过程检测不合理问题,提出了一种将产品各要素及其特征(大小、方向、形状、位置)统筹与分解的系统化尺寸分析方法。以旋转体产品为例,利用现代蓝光检测技术,根据铸件结构特征,将GD&T运用至产品各工序的尺寸分析工艺制定中,对制造过程中产品各要素各特征的变化进行定性定量分析,并验证工艺的可靠性。根据结果能清晰有效分析出旋转体产品尺寸和形位的变化量及趋势,对于特异性的尺寸变化可快速分析出原因。通过将GD&T运用至熔模铸造产品尺寸跟踪中,能高效准确对产品尺寸进行定性和定量化分析,有利于提高产品尺寸精度,减少生产浪费,提高生产效益。

During the development of titanium alloy investment casting products,inadequate dimensional analysis causes large design error of shrinkage data and the unreasonable inspection of process procedures.The paper proposes a systematic dimension analysis method that integrates and decomposes all elements and their features(size,direction,shape and position).Based on the structure characteristics of castings,GD&T is applied to the size analysis process formulation of each process of the product by using modern blue light detection technology.The qualitative and quantitative analysis of the changes of each feature of the product elements in the manufacturing process is carried out,and the reliability of the process is verified.According to the results,we can clearly and effectively analyze the changes and trends of the size and shape of the rotary body products,and quickly analyze the reasons for the specific size changes.For products with different structures,by applying GD&T to its size analysis,the problems in the development process of products can be analyzed efficiently and accurately,which is conducive to improving product size accuracy,reducing production waste and improving production efficiency.