Capability study is one of the main tools of six sigma it tells us our process capability and the probability of it producing defects. Discover the cutting edge in process capability analysis with the statgraphics six sigma and lean six sigma software learn more about our tools here. Process capability measure of how capable the process is to meet customer requirements compares process limits to tolerance limits.
You can use a process-capability study to assess the ability of a process to meet specifications during a quality improvement initiative, such as six sigma, a. Outline of the capability measure, cpk, which can be applied to improving product and process quality. Process process capability is the long-term performance level of the process after it has been brought under statistical control it is the ability of the. In process improvement efforts, the process capability index or process capability ratio is a statistical measure of process capability: the ability of a process to.
An overview of process capability analysis including prerequisites, pro tips and a walk-through of how to use this tool. Process capability - cp, cpk, pp, ppk capacidad de proceso - cp, cpk, pp, ppk. Cp cpk template for excel you don't have to be a statistician to calculate cp and cpk just drop your data into qi macros fill in the blank template.
Upper tolerance limit lower tolerance limit 6s process capability index (cpk) used when the process is not precisely centered – a free powerpoint ppt. Products must be designed within the process capabilities of intended manufacturing processes capability indices provide a measure of this. Companies want to know that they are making a product that will meet their customers' expectations but how can they do that in this lesson, we'll. Cp and cpk are considered short-term potential capability measures for a process in six sigma we want to describe processes quality in terms of sigma.
Six sigma process performance is reported in terms of sigma but the statistical measurements of cp, cpk, pp, and ppk may provide. Process data in terms of actual performance has been discussed so far in this course you can also examine processes from the customer’s perspective process. Cpk (capability process index) if you also want to study the position of the process in relation to the tolerance limits, you use the cpk index, which describes the.
Have you ever tried to explain the concept of process capability to someone and received a blank stare in return try using an analogy of driving different vehicle. Process capability index, cpk description: cpk is a short term process index that numerically describes the within subgroup or potential capability (ppk is long. Process capability analysis is a major concept and a must study for professionals looking forward having a firm knowledge on minitab with statistics.