Question

5) Read the enclosed chapter about Grinding from Fundamentals of Machining and Machine Tools, G. Boothroyd and W. A. Knight. Answer the following: In grinding, what is truing and what is dressing? Cite the Knoop hardness of Aluminum Oxide, Silicon Carbide and CBN and Diamond grits а. b. (abrasive particles on the grinding wheel). Reflect on the comments made by the authors that CBN abrasive has replaced diamond wheels. Why do you think this may be the case? What abrasive should be selected for grinding steels? How about for grinding C. aluminum? Describe grit bonding types for grinding wheels. You may have to search over the internet to give a good answer. d. Describe the various methods for cooling with fluids in grinding. е. f. Choose a non-conventional grinding method from the chapter, and describe it in "detail". What are advantages and disadvantages of the method?

Answer 1

a } Truing :  removal of material from the cutting face of the wheel so that the resultant surface runs absolutely true to some other surface such as the grinding wheel shaft .  The dressing of a wheel in order to return the wheel into its original shape is called turing.

Dressing:  If the grinding wheels are loaded or gone out of shape, they can be improved by dressing of the wheels. Dressing is the process of breaking away the glazed surface so that sharp particles are again presented to the work.