自动测量设备如何用MINITAB 做GR&R

sunnyjiang

sunnyjiang 发表于 2021-5-20 13:53
type 1 做Cgk.
Type 3 是在minitab 里面选择GR&R study(Nested)?

等大侠解答啊.....

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sunnyjiang

MSA type1 type2 type3       
type1 stydy       
used for : examination of the gages capability cgk( manual and automatical systems)       
implementation: 1 appraiser/ 1 measuring location, 1 gage/ 1 traceable standard       
collect 50 consecutive ( 连续的，不间断的)measurments of the same characteristic, then calculate capability cg and cgk       
requirements: cg, cgk>=1.33       
       
type 2 study       
Used for: repeatability and reproducibility %GRR( manual system)       
Implementation: 3 appraisers/ 1 measurments location, 1 gage/ 10 production parts(sample)       
Perform 2 trials per appraiser, afterwards calculate the %GRR rating as well as the number of distinct categories ndc, using the tolerance as reference figure       
requirment:       
0%<%GRR>=10%----system is acceptable       
10%<%GRR>30%--system may be acceptable, depending from the importance of the measurement and the costs of the system       
30%<%GRR>x%--system is not acceptable, corrective actions must be found       
ndc>=5---not less, for reasons of process control       
       
Type 3 study       
Used for: repeatability and reproducibility %GRR( automatically system)       
Implementation: 1 appraisers/ 1 measurment location, 1 automatic gage/ 25 production parts(sample)       
Perform 2 trials per part, remove parts between trials (unclamping and removal)       
requirment:       
0%<%GRR>=10%----system is acceptable       
10%<%GRR>30%--system may be acceptable, depending from the importance of the measurment and the costs of the system       
30%<%GRR>x%--system is not acceptable, corrective actions must be found       
ndc>=5---not less, for reasons of process control       

sunnyjiang

需要的复制下来看看吧

sean.zhu

这个建议再了解一下自动测量设备的测量过程。比方说前期我碰到三坐标测量，首先需要手动粗建坐标系的。齿轮测量不是从同一个齿，同一个高度开始的。所以建议还是用方差分析法，看看交互。