Saturday, March 5, 2011

Taha Selman Cakir
030070023
4th week

The Vuoso-Praha System:

The Vuoso-Praha coding system uses a four-digit code to represent parts according to type, class, group, and material. The Vuoso-Praha coding system is a 'typically used for rough part classification so as to identify the type of department that would produce the part.

(Zhang H.-C., Alting L, Computerized manufacturing process planning system, p. 87-89)

Linear Interpolation Motion (in G-Coding):

In linear interpolation, the tool moves in a straight line from start to end along two or three axes. Theoretically, all types of profiles can be produced by this method by making the increments between the points small. However, a large amount of data has to be processed in order to do so.

(Kalpakjian S., Schmid S.R., Manufacturing engineering and technology, Ed. 5th, p.1158)

The QS 9000 Standard:

Jointly developed by Chrysler, Ford, and General Motors, the QS 9000 standard first published in August of 1994. Prior to the development of QS 9000, each of the 'Big Three' automotive companies had its own standard for quality system requirements.

The February 1995 edition of QS 9000 has three sections. Section I contains all 20 of the ISO 9001 clauses, but almost every clause has additional requirements for QS 9000. Section II has three sections: Production Part Approval Process, Continuous Improvement, and Manufacturing Capabilities. Section III is entitled Customer-Specific Requirements, and contains seperate sections for Chrysler, General Motors, Ford, and Truck Manufacturers, respectively. Existing QS 9000 registrations are being upgraded continuously to comply with new editions of QS 9000.

(Kalpakjian S., Schmid S.R., Manufacturing engineering and technology, Ed. 5th, p.1120)

Sensors for Automated Inspection:

Directly or indirectly and with the use of various probes, sensors can detect dimensions, surface roughness, temperature, force, power, vibration, tool wear, and the presence of external or internal defects.

Sensors may operate on the principles of strain gages, inductance, capacitance, ultrasonics, acoustics, pneumatics, infrared radiation, optics, lasers, and various electronic gages. Sensors may be tactile (touching) or nontactile. They are linked to microprocessors and computers for graphic data display. This capability allows rapid on-line adjustment any processing parameter, thus resulting in the production of parts that constinently are within specified standards of dimentional tolerance and quality.

(Kalpakjian S., Schmid S.R., Manufacturing engineering and technology, Ed. 5th, p.1137)

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