for your reference
1.B
2.What is MFT?
3.it is depend on the aim of your analysis for process variation or tolerance of part or customer requirement.
4.ndc=1.41pv/grr, Min ndc is 5, so you can calculate the result you want.
5.
MSA tools is used for related whole measurement system of process, it is unavailable to make MSA for fixture, you shall make MSA for the measurement system related to measure the 0.3mm
jrl1984 (2008-6-06 09:18:27)
3. 看不懂 感觉选 C
4. 3.54
nanasue (2008-6-06 09:49:36)
1. D
2. B
3. 应该是sqrt（GRR*GRR + PV* PV ）
4. ndc = 1.41(PV/GRR), ndc>=5
5. 1）MSA是测量系统分析的意思，夹具只是测量系统的一部分，我想你们客户应该是想知道夹具对测量系统的影响。
2）这个问题没办法回答你，因为不清楚你的数据是如何收集的，时间的长短，还有就是你的标准差是total的标准差呢，还是within标准差，用前者叫Ppk，用后者叫Cpk
[ 本帖最后由 nanasue 于 2008-6-6 10:05 编辑 ]
苏曼殊 (2008-6-06 10:20:24)
无聊做做题
1 c
2 b
3 d
4 ndc=1.41pv/GR&R>5
故 pv>GR&R5/1.41=3.5GR&R
5 (35-30)/3×2=0.83
最新回复
zhaokafei (2008-6-06 08:41:23)
jrl1984 (2008-6-06 09:05:50)
will.fchen (2008-6-06 09:16:26)
1.B
2.What is MFT?
3.it is depend on the aim of your analysis for process variation or tolerance of part or customer requirement.
4.ndc=1.41pv/grr, Min ndc is 5, so you can calculate the result you want.
5.
MSA tools is used for related whole measurement system of process, it is unavailable to make MSA for fixture, you shall make MSA for the measurement system related to measure the 0.3mm
jrl1984 (2008-6-06 09:18:27)
4. 3.54
nanasue (2008-6-06 09:49:36)
2. B
3. 应该是sqrt（GRR*GRR + PV* PV ）
4. ndc = 1.41(PV/GRR), ndc>=5
5. 1）MSA是测量系统分析的意思，夹具只是测量系统的一部分，我想你们客户应该是想知道夹具对测量系统的影响。
2）这个问题没办法回答你，因为不清楚你的数据是如何收集的，时间的长短，还有就是你的标准差是total的标准差呢，还是within标准差，用前者叫Ppk，用后者叫Cpk
[ 本帖最后由 nanasue 于 2008-6-6 10:05 编辑 ]
苏曼殊 (2008-6-06 10:20:24)
1 c
2 b
3 d
4 ndc=1.41pv/GR&R>5
故 pv>GR&R5/1.41=3.5GR&R
5 (35-30)/3×2=0.83