|M.Sc Thesis||Department of Quality Assurance and Reliability|
|Supervisor:||Dr. Jacqueline Asscher|
The goal of this project was to adapt the machining process in vertical lathes in the Carmel Forge plant so that it would receive certification in keeping with the ACE (Achieving Competitive Excellence) Standard. This was to be accomplished by establishing a system for collecting relevant data, regulating the reliability of the measurement of these data, and determining the consistency of the process and its ability to comply with the demands of the customers’ specifications. In addition, in this project I tried to detect problems and stumbling blocks that might hinder the work of the department in implementing the quality standards and to assess possible ways of resolving them and achieving greater effectiveness.
I carried out a controlled experiment, during which I monitored the gauging practices carried out by the workers under controlled conditions. In view of the results, it was concluded that none of the manual measuring instruments in use in the department conform to the requirements of the ACE Standard. Conversely, the CMM (Coordinate Measuring Machine) machine was found to perform exceptionally well for all the dimensions that were checked.
Once the data had been collected, I used methods of statistical quality control on selected measurements for six representative products. Based on the data processing and analysis, it may be concluded that the processes are in a state of statistical control and that they comply with the ACE Standard.
In order to evaluate how various factors affect the measurement results I carried out an analysis of variance.
The conclusions reached during this study were submitted to the factory’s Quality Assurance Department and to the Machining Department.
The machining process for vertical lathes was certified for the ACE Standard in March 2004.