How to analyze the structure process of precision parts
Release time:
2023-02-07 09:22
Source:
The structural technology of precision parts processing refers to the requirements of parts design according to the characteristics of processing technology, that is to say, the structural design of parts will affect or decide the quality of processing. It can be analyzed from the feasibility, convenience and economy of processing.
(1) Analysis from the correct marking of the drawing size of the parts: because the CNC machining program is compiled on the basis of precise coordinate points. Therefore, the relationship between the geometric elements of each figure must be clear. The conditions of the various geometric elements must be sufficient, and there should be no additional dimensions that cause contradiction or closed dimensions that affect the arrangement of the process.
(2) Analysis under the condition of ensuring uniform datum: On precision parts processing drawings, it is better to refer to the size of the same datum or directly give the coordinate size. This marking method is not only easy to program, but also easy to coordinate between sizes, which brings convenience to maintain the consistency of design reference, process reference, test reference and programming origin.
(3) From the blank structure manufacturability: in order to meet the structure and process requirements of the blank, first of all, the blank processing allowance should be enough and as uniform as possible; Secondly, we should consider the reliability and convenience of the blank positioning in the process of processing, and then we should consider the reliability and convenience of the blank positioning in the process of clamping, so as to process as many surfaces as possible in a process of installation. For the blank which is not easy to clamp, it can be considered to increase the clip allowance or auxiliary reference such as process boss and process lug on the blank.
How to analyze the structure technology of precision parts
(4) Analysis from the deformation of parts: For the deformation of precision parts in the processing process, appropriate heat treatment process (such as quenching and tempering, annealing, etc.) can be adopted before processing or conventional methods such as rough machining and finish machining separation or symmetric edge removal can be used to solve the problem.
Through the analysis of parts structure technology, the above four points are beneficial to achieve the required processing quality, to reduce the amount of processing labor, and to improve labor productivity.
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