Quality control method, quality control support system and trend management program for manufacturing operation

• US 20030040948A1
• Filed: 03/26/2002
• Published: 02/27/2003
• Est. Priority Date: 03/29/2001
• Status: Abandoned Application

• Current Assignee: Japan Institute of Plant Maintenance
• Original Assignee: Japan Institute of Plant Maintenance
• Inventors: Sakaguchi, Mitsuo
• Application Number:
  US10/106,170
• Publication Number:
  US 20030040948A1
• Time in Patent Office: Days
• US Class Current: 705/7
• CPC Class Codes: G05B 19/41875 characterised by quality surveillance of production
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: G06Q 10/06395 Quality analysis or management
• CPC Class Codes: G06Q 10/0875 Itemisation or classification of parts, supplies or services, e.g. bill of materials
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
• CPC Class Codes: Y02P 90/80 Management or planning

Abstract

A product quality control method for a manufacturing operation comprising: storing part-by-part data related to equipment used in a manufacturing process in a storage device using an inputting device; outputting the stored data from the storage device via a processing device to an outputting device as a quality maintenance matrix; measuring characteristic values of a product manufactured by implementing an inspection and manufacturing operation based on the quality maintenance matrix, and additionally storing the obtained characteristic values in the quality maintenance matrix; performing factor analysis on a part related to the quality characteristic item showing an impermissible characteristic value in the above measurement and setting new conditions so as to improve the impermissible characteristic values and storing the quality maintenance matrix revised by the newly set conditions; implementing an inspection and manufacturing operation based on the thus revised quality maintenance matrix prepared in the first step.

Claims

1. A product quality control method for a manufacturing operation, the method comprising:

a first step for storing part-by-part data related to equipment used in a manufacturing process in a storage device using an inputting device, and outputting the stored data from the storage device to an outputting device, via a processing device, as a quality maintenance matrix;

a second step for measuring a characteristic value for each quality characteristic item for a product actually manufactured by implementing an inspection and manufacturing operation based on the quality maintenance matrix prepared in the first step, and additionally storing the obtained characteristic value in the quality maintenance matrix stored in the storage device, via the processing device by using the inputting device; and

in a case in which some of the characteristic values measured for the product in the second step fall outside a permissible range from a quality standpoint,

a third step for performing factor analysis on a part related to each of the quality characteristic items which exhibit the impermissible characteristic values, setting a new condition such that the characteristic value falls within the permissible range, and storing the quality maintenance matrix revised by setting the new condition, in the storage device using the inputting device; and

a fourth step for maintaining and managing the implementation of an inspection and manufacturing operation based on the quality maintenance matrix revised in the third step.

2. A product quality control method for a manufacturing operation, said method comprising:

a first step for storing part-by-part data related to equipment used in a manufacturing process in a storage device using an inputting device, and outputting the stored data from the storage device via a processing device to an outputting device, as a quality maintenance matrix;

a second step for measuring a characteristic value for each quality characteristic item for a product actually manufactured by implementing an inspection and manufacturing operation based on the quality maintenance matrix prepared in the first step, and additionally storing the obtained characteristic value in the quality maintenance matrix stored in the storage device, via the processing device by using the inputting device; and

in a case in which all the characteristic values measured for the product in the second step fall within a permissible range from a quality standpoint,

a fourth step for maintaining the implementation of an inspection and manufacturing operation based on the quality maintenance matrix prepared in the first step.

3. A product quality control method for a manufacturing operation, said method comprising:

a first step for storing part-by-part data related to equipment used in a manufacturing process in a storage device using an inputting device, and outputting the stored data from the storage device via a processing device to an outputting device, as a quality maintenance matrix;

a second step for measuring a characteristic value for each quality characteristic item for a product actually manufactured by implementing an inspection and manufacturing operation based on the quality maintenance matrix prepared in the first step, and additionally storing the obtained characteristic value in the quality maintenance matrix stored in the storage device, via the processing device, by using the inputting device; and

in a case in which some of the characteristic values measured for the product in the second step fall outside a permissible range from a quality standpoint,

a third step for performing factor analysis only for a part related to each of the quality characteristic items which exhibit the impermissible characteristic values, setting a new condition such that the characteristic value falls within the permissible range, and storing the quality maintenance matrix revised by setting the new condition therein, in the storage device using the inputting device; and

a fourth step for implementing an inspection and manufacturing operation based on the quality maintenance matrix prepared in the first step for a part related to each quality characteristic item which exhibits a characteristic value within the permissible range from a quality standpoint, wherein the forth step is performed simultaneously and in parallel with the third step.

4. A product quality control support system for a manufacturing operation, comprising:

a means for a computer storage device to acquire part-by-part data related to equipment used in a manufacturing process; and

a means for a computer processing device to process the data stored in the storage device and to output the data to outputting device as a quality maintenance matrix, in product quality control for a manufacturing operation.

5. A computer-based trend management program, comprising:

arranging measured data of a product in time series;

managing a deterioration trend of the product; and

issuing a warning to an outputting device when the measured data does not fall within appropriate reference values.