How to Conduct a Machine Capability (Cmk) Study

M

maximillen010

#1
i am new to this area..any expertise here can assist or help me? how to conduct a machine capability study? especially for eletrical discharge machine (EDM).is there any standard procedure?what are the parameters of the machine I need to look into?
 
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R

remsqa

#2
Machine Capability

Hai

As per the machine capability Ananlysis .We need not to go for testing machine paremater somthing like discharge voltage and rate .

The machine capability study is been conducted that the machine is capable of produce the required precesicion and accuracy.For that we have to take 125 or 50 continous components from the machine and go for the Capability study which is as same as process capability analysis method.And for the accpectance criteria the MPk should me more than 2 (What we call it as Cpk in Process capability).

REGRADS

R.L.SATTHISH KUMAR



For other readers if any corrections pl let tell me for further improvements.
 
R

Romanel

#4
Re: How to conduct machine capability (Cmk) study?

Hello everyone,

try using this attachment

let me know if someone finds it useful
nb:I can not attach the file, how can I do?
thanks
 
T

tommyd327

#10
I get hung up on the nuts and bolts of these studies. How do you go about getting the data? Do I just run a test during production? Do you check every consecutive part? Are operators allowed to make offsets or change inserts during the test? Do I have them start by adjusting a characteristic to the low spec limit and run while checking every part until that feature is at the upper spec limit? We make rotors on Okuma Howa V35 and V40 machines with shorter runs of maybe 1000 rotors. Is doing a machine capability study how you determine sample frequency for a run chart?
Bye the way, is making offsets and changing inserts a common or "Beneficial special cause" of variation?

I realize this is a lot of questions. Thanks so much for the help.
 
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