Author(s)

Shuping Lv

Corresponding Author

Shuping Lv

ABSTRACT

In the machining process of parts, the process dimension is calculated one by one using the process dimension chain calculation, that is called single-chain calculation. That is, a process dimension chain diagram is calculated once. This single-chain calculation method is only applicable to parts with fewer processes. If processes is large, the parts that do not overlap or the reference are converted multiple times, and the calculation of the process size is also a single-chain calculation method, which will be complicated and cumbersome, also it will make mistakes often. Once the error occurs, it needs to be reworked. The overall process sizes are also linked to each other. In the actual process dimension chain calculation, all or most of the rework calculations often occur. Therefore, the overall contact calculation (ie, the dimension tracking chart method) for all process dimensions of the part can avoid errors. So this paper will illustrate the establishment and calculation of the dimension tracking chart by way of examples.

KEYWORDS

Process size, process margin, process size tracking, dimensional chain