d) What are the consequences of the high working temperatures which arecharacteristic of grinding operations?

Solution: Grinding Operation is a manufacturing process which is used to obtain a good surface…

Answered: d) What are the consequences of the…

Precision Machining Technology (MindTap Course List)

2nd Edition

ISBN:9781285444543

Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Chapter7: Grinding

Section7.2: Grinding Wheels For Precision Grinding

Problem 1RQ: What wheel shapes are commonly used for surface and cylindrical grinding?

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2) Write the application and advantages of Honing Process? 3) Briefly explain the working of a centerless grinding operation with a neat sketch?
c) It is planned to carry out the grinding operation using a grinding wheel of diameter 15 cm and width 2 cm, and using successive depths of cut of 0.02 mm, with two final cuts of 0.01 mm each. Wheel speed is 1450 m/min, work speed is 0.25 m/s and the cross feed is 0.4 mm. The number of active grits per area of the wheel surface is 0.75 grits/mm? with a grain aspect ratio of 20. i) Determine the Material Removal Rates for both depths of cut. ii) If the cycle time for one forward/return stroke of the work during grinding is 5 sec., estimate the total time taken to complete the job. ii) Considering a constant of proportionality K2 of 40,000, determine the maximum surface temperature of the work. iv) What recommendations would you give to reduce any surface damage owing to high work temperatures?
11) An internal bore is ground to 100 mm, removing 0.3 mm stock. To accomplish this, a grinding wheel 80% of the finished size is used. The wheel is dressed every 15 cycles because it is observed that the radial wheel wear is 0.05 mm on average. Assume wheel and part widths are equal. a. What dressing depth would you recommend and why? b. Calculate the G-ratio of this operation.
3) Briefly explain the working of a centerless grinding operation with a neat sketch?
What are the three benefits of precision grinding?
Rod Mills, Ball Mills and Autogenous Mills are different types of tumbling mills used in the metalliferous industry. What equipment, if any, usually accompanies each of these mills in grinding circuits and why.
5. Types of Grinding Wheel Machines and their outputs. (atleast 3)
11) Name 2 adverse effects of allowing the workpiece to become too hot in grinding. 12) Name 2 reasons coolant is used in grinding
I want the theory part about Batch grinding in ball mill, its types, its Applications, advantages and disadvantages and els PLZ I want a perfect answer with details
13) Manufacturers are designing grinding spindles to turn at higher and higher speeds. What is the main reason for this, and what is one drawback of increasing speed? 14) Name 2 reasons why cost increases as finish allowances decrease (See Figure 9.40).
1. Draw a sound conclusion based on how you familiarized the key components of the surface grinding machine. Emphasize what you have learned on the vital roles of each area.
Why dressing is required for a continuously used wheel? and how can we dress a grinding wheel?

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