Manufacturing Technology Today

C. K. Srinivas ¹, C. S. Ramesh ², S. V. Prasad ¹

Affiliations
1 Central Manufacturing Technology Institute, Bangalore-560022, IN
2 Department of Mechanical Engineering, Ghousia College of Engineering, Ramanagaram, IN

Abstract

Rapid Prototyping (RP) refers to a class of technologies that can automatically construct physical models directly from Computer Aided Design (CAD) data. RP is also called layer-manufacturing technology. Prototype parts and tooling can be produced in a shorter time thereby reducing the lead-time for product development. Different rapid prototyping technologies are commercially available in the market, each with unique capability. Stereo-lithography (SL), Fused Deposition Modeling (RDM), Laminated Object Manufacturing (LOM), Selective Laser Sintering, and Direct Metal Laser Sintering are some of the commonly used Rapid Prototyping technologies. This paper deals with the capabilities of the above technologies with reference to the maximum size of part, surface finish and accuracy. Also, a case study of the injection moulding tool produced by Direct Metal Laser Sintering RP technology is discussed.

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S. V. Prasad ¹, P. Raghuram Naik ¹, G. Sudheendra ¹

Affiliations
1 Central Manufacturing Technology Institute, Tumkur Road, Bangalore - 560 022, IN

Abstract

Cam type grinding wheel dressing attachments, in which the X and Y motions of the dressing diamond are controlled independently by templates, facilitates fast, accurate and automatic contour dressing, the design of the templates could be done in such a way that the peripheral speed of the diamond could be kept constant and also to cover wide range of grinding wheel profiles. This paper describes the development of templates for grinding splines and gears using cam type wheel dressing attachment.

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