DavidB1991
Registered
Hello everyone,
I am asking you for a little hint about MSA. I plan to completely change the approach on this issue. So far, we have conducted MSA for each new launch (each type of measurement tool appearing in the control plan), but with the increase in the number of new projects, the topic has become very time-consuming and burdensome, not to say impossible. I want to approach the matter in such a way as to minimize the number of analyzes carried out while maintaining compliance with the IATF. The number of analyzes will be smaller, but I will be reliable.
I have several points that are not entirely clear.
1. Let's assume that we purchased a 3D machine in 2015 and started measuring a product A. The R&R test results were below 10% so the measurement system is acceptable. In 2020, we have a new launch of a product from the same group. Can we attach the MSA analysis prepared in 2015 to confirm the compliance of the measurement system?
2. Another issue is the understanding of the clause 7.1.5.1.1 of the IATF 16949 standard "for each type of control, measurement and test equipment system specified in the control plan." How to understand the type of control? As I understand it, the type of control is e.g. 0-150 caliper measurement, measurement with a 3D machine, measurement with a measuring arm. In the above-mentioned case, using a 3D machine, we measure the following characteristics:
A) Flatness 0.15 mm between d91.40 and d92.50 mm - d1 mm ruby ball stylus,
B) Diameter d 91.17 mm - cylindrical shank d3 mm,
C) Height 2.7 mm - measuring pin with ruby ball d1 mm,
D) Diameter at point A 101.80 mm - measuring pin with ruby ball d1 mm,
E) Diameter at point B 101.80 mm - stylus with ruby ball d1 mm, Is it sufficient to provide the RR for the measurement from sub-item A to confirm the compliance of the measurement system ?.
3. We have calipers with different ranges: 0-150mm, 0-200mm, 0-300mm, 0-500mm, 0-600mm. Should we consider each caliper as a different type of control in this case? In my opinion, yes.
4.Measurement with a caliper 0-150 mm can be performed in 4 ways: jaws for external measurements, jaws for internal measurements, depth gauge extension and measuring the difference in length using flat surfaces on the fixed and movable jaws. Can all the above-mentioned methods be treated as one type of control?
5.Using a micrometer 0 - 25 mm 0.001 mm, we measure the thickness of the tapes during delivery. Let's assume that we mainly measure tapes with a thickness of 0.8 mm, 1 mm, up to a maximum of 3 mm. Hypothetically, a thickness of 10 mm appears in the new project. Can MSA for 0.8mm thickness measurement provide proof of measurement system compliance for 10mm thickness measurement? I mean, should the measuring range be taken into account when analyzing the MSA?
Many thanks for help.
I am asking you for a little hint about MSA. I plan to completely change the approach on this issue. So far, we have conducted MSA for each new launch (each type of measurement tool appearing in the control plan), but with the increase in the number of new projects, the topic has become very time-consuming and burdensome, not to say impossible. I want to approach the matter in such a way as to minimize the number of analyzes carried out while maintaining compliance with the IATF. The number of analyzes will be smaller, but I will be reliable.
I have several points that are not entirely clear.
1. Let's assume that we purchased a 3D machine in 2015 and started measuring a product A. The R&R test results were below 10% so the measurement system is acceptable. In 2020, we have a new launch of a product from the same group. Can we attach the MSA analysis prepared in 2015 to confirm the compliance of the measurement system?
2. Another issue is the understanding of the clause 7.1.5.1.1 of the IATF 16949 standard "for each type of control, measurement and test equipment system specified in the control plan." How to understand the type of control? As I understand it, the type of control is e.g. 0-150 caliper measurement, measurement with a 3D machine, measurement with a measuring arm. In the above-mentioned case, using a 3D machine, we measure the following characteristics:
A) Flatness 0.15 mm between d91.40 and d92.50 mm - d1 mm ruby ball stylus,
B) Diameter d 91.17 mm - cylindrical shank d3 mm,
C) Height 2.7 mm - measuring pin with ruby ball d1 mm,
D) Diameter at point A 101.80 mm - measuring pin with ruby ball d1 mm,
E) Diameter at point B 101.80 mm - stylus with ruby ball d1 mm, Is it sufficient to provide the RR for the measurement from sub-item A to confirm the compliance of the measurement system ?.
3. We have calipers with different ranges: 0-150mm, 0-200mm, 0-300mm, 0-500mm, 0-600mm. Should we consider each caliper as a different type of control in this case? In my opinion, yes.
4.Measurement with a caliper 0-150 mm can be performed in 4 ways: jaws for external measurements, jaws for internal measurements, depth gauge extension and measuring the difference in length using flat surfaces on the fixed and movable jaws. Can all the above-mentioned methods be treated as one type of control?
5.Using a micrometer 0 - 25 mm 0.001 mm, we measure the thickness of the tapes during delivery. Let's assume that we mainly measure tapes with a thickness of 0.8 mm, 1 mm, up to a maximum of 3 mm. Hypothetically, a thickness of 10 mm appears in the new project. Can MSA for 0.8mm thickness measurement provide proof of measurement system compliance for 10mm thickness measurement? I mean, should the measuring range be taken into account when analyzing the MSA?
Many thanks for help.