Design and Fabrication Of CMM inspection Fixture – Mechanical project

ABSTRACT

A fixture is a mechanism used in manufacturing to hold and clamping a connection of wind mill, position it correctly with respect to a CMM inspection machine probe. In CMM inspection fixture, minimizing alignment time and get stability due to clamping and essential to maintain the inspection accuracy .Setting the job and it’s alignment in manually with magnetic v block so it is time consuming process, so reduction the setting time and alignment time etc. is a main aim of the process. Fixture reduce setting time, increase the accuracy and best accuracy of inspection is possible.

INTRODUCTION

When the job is inspected on CMM lots of time is spent for setting of job and alignment. This reduces the productivity also if there is misalignment of job it affects the accuracy of inspection. There for in order to avoid the misalignment and improve accuracy of inspection the inspection fixture is used. Inspection fixture sets the job in proper direction so we can make program for inspection and automatically inspection is carried out by CMM. This minimizes the manual work and setting time thus productivity can be increased. Design and manufacture inspection fixture to minimize setting time and improve accuracy. Currently. Marvelous Machinist use one magnetic V-block to support the connection vertically and the inspections done manually that is by using joystick. The major problem in this method is more setting time, the time required for setting the job perfectly vertical is more.
Accuracy of CMM inspection depends on the number of points taken by probe of CMM. Another drawback of this method is probe of CMM can‟t taken point near V-block and are under the V-block this affects directly the accuracy of inspection. One more drawback of this method is misalignment. In this method there is possibility of misalignment and it takes more time for alignment which directly affects the productivity.

Problem definition

When the job is inspected on CMM lots of time is spent for setting of Job and alignment. This reduces the productivity also if there is Misalignment of job it affects the accuracy of inspection. There for e in order to avoid the misalignment and improve accuracy of inspection the Inspection fixture is used. Inspection fixture sets the job in proper direction so we can make program for inspection and automatically inspection is carried out by CMM. This minimizes the manual work and setting time thus productivity can be increased. Design and manufacture inspection fixture to minimize setting time and improve accuracy.

Design and Fabrication Of CMM inspection Fixture - Mechanical project — Design and Fabrication Of CMM inspection Fixture – Mechanical project

CONCLUSION

We have designed and fabricate an inspection fixture for Inspections of „connections‟ of windmills . This can be used for five different components .This will increase accuracy of inspection and Productivity by reducing misalignment, reducing setting time and decrease inspection time by 60% per job.

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Design and Fabrication Of CMM inspection Fixture – Mechanical project