Method for datum location of forged parts during numerical control machining
A technology of processing reference and positioning method, which is applied in the direction of manufacturing tools and workshop equipment, can solve the problems of increasing part deformation factors, consuming time, and difficulty in ensuring accurate positioning reference, so as to improve processing efficiency and reduce scrap rate.
Inactive Publication Date: 2013-12-25
SHENYANG AIRCRAFT CORP
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Problems solved by technology
This method is time-consuming, and it is easy to cause deviations in the scribing benchmark, resulting in uneven machining allowances, and in severe cases, insufficient machining allowances for parts resulting in scrapped products
[0003] The disadvantages are as follows: 1. The scribing process needs to consume a lot of production time and prolong the processing cycle of the parts; 2. The scribing error is easy to cause uneven machining allowance and insufficient forging machining allowance; 3. If the forging surface is directly positioned, it is difficult Ensure that the positioning datum is accurate; 4. If the method of increasing the machining allowance is used to remedy the problem of inaccurate datum, it will increase the deformation factor in the process of part processing
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[0014] A method for locating datums in numerically controlled machining of forging parts, characterized by the following steps:
[0015] 1) When designing the structure of the forging, set up a cross line boss or groove on the surface of the forging part, and the position of the cross line should meet any of the following conditions: a. figure 1 and 2 As shown, the position of the cross line coincides with the position of the reference hole of the part, the purpose of which is to ensure the unity of the design reference, processing reference and forging reference; b. image 3 The cross line shown is on the process boss. Considering the convenience of positioning and clamping, when there is no reference hole on the part, the cross line can be established on the process boss. When this form is adopted, the cross line is a groove structure. Ensure stable clamping;
[0016] 2) The forging is processed with the intersection point of the cross line as the machining datum or the or...
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The invention relates to a method for datum location of forged parts during numerical control machining, which is characterized by comprising the following steps: 1. when the structure of the forged parts is designed, a cross line boss or groove is arranged on the surface of the forged part, wherein the cross line position needs to meet any one of the following conditions: a. the cross line position is coincident with the position of a part datum hole; and b. the cross line is on the technique boss; and 2. the cross point of the cross line is used as an original point of machining datum or numerical control machining so as to conduct machining on the forged part. For the method for datum location of forged parts during numerical control machining, the cross-shaped datum line is directly designed on the blank of the forged parts, and the cross point of the cross line is used as an original point of machining datum or numerical control machining, the machining efficiency of the forged parts can be greatly improved, and the rejection ratio of the parts can be lowered.
Description
technical field [0001] The invention relates to a datum positioning method for numerical control machining of forging parts, which is used for the datum positioning of forging parts in the numerical control machining process. Background technique [0002] In the process of machining forgings, there have always been the phenomenon of cumbersome alignment process and unstable accuracy. Before CNC machining or conventional machining, the parts must be processed after fully marking the forgings, fully coordinating the machining allowance, and drawing the machining reference line. This method is time-consuming, and it is easy to cause deviations in the scribing benchmark, resulting in uneven machining allowances, and in severe cases, insufficient machining allowances for parts resulting in scrapped products. [0003] The disadvantages are as follows: 1. The scribing process needs to consume a lot of production time and prolong the processing cycle of parts; 2. The scribing error...
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IPC IPC(8): B25H7/00
Inventor 冯伟庆
Owner SHENYANG AIRCRAFT CORP