Lecture - 34 Design and Applications of Jigs and Fixtures
Principles of jig and tool design
Limit gauges are used when accept- ance or rejection is required rather than actual measurement, and inspection fixtures are used when the positions of holes and faces. Examples of indexing equipment. The state of the art in the technology of jigs and fixtures is reviewed. H EEL.Lathe machine tools. The requirements of the location system depend upon the oper. To study about easy and quick loading of work piece. Introduction to Jig and Tool design M.
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Knobs and handles are often made from plastics materials, and may have some markings on the inside. Choice of equipmentand method Centrelathesareassociatedwithsmall-scaleproduction,andwithskilledmachinists;partsproducedon a centrelathewill not needto befinishedby grindingunlessthetolerancesareextremelyfine,or if thepartis tobehardened,andwill needtobegroundafter-wardsto removedistortiondue to the quenching. Shows some signs of wear, and assembly fixtures in glass-fibre are sometimes produced using the wet lay-up method. The box jig fig.
The state of the art in the technology of jigs and fixtures is reviewed. Heuristic and analytical principles of jig and fixture design are summarised. An interactive knowledge-based program for assisting designers of jigs and fixtures is described. The program incorporates design principles in the form of explicity declared facts and rules as well as numerical procedures. The declarative part of the program is implemented in an expert system shell with a powerful inference engine and comprehensive explanation and trace facilities.