Cycle Time for Centerless and Internal Grinding

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Sriram K Participant Join Date: Apr 2009 Location: Chennai, India Posts: 4	Cycle Time for Centerless and Internal Grinding 04/06/2009 6:03 AM
	Here Everyone, Here we are going to discuss abt the grinding methods in centerless, cylindrical and internal. first let us know abt how we are going to calculate the cycle time in Centerless and internal grinding. Engineers Comments Pls.... __________________ "Nothing Changes Unless Something Changes"
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sb Guru Join Date: Mar 2007 Posts: 2550 Good Answers: 103	#1 Re: Manufacturing Technology Using Grinding Methods 04/06/2009 6:27 AM
	1- machine spec ? 2. Wheel type ? 3. Wheel diameter ? 4- RPM ? 5- Job profile and rigidity ? 6- material ? 7- Dry/ Wet ? 8- Coolant ? ...... (it is already 5 days past the date) Now let us talk about something simpler- Let us calculate the turning time (on center lathe) required to machine a turbine rotor... __________________ Fantastic ideas for a Fantastic World, I make the illogical logical.They put me in cars,they put me in yer tv.They put me in stereos and those little radios you stick in your ears.They even put me in watches, they have teeny gremlins for your watches
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#2 In reply to #1 Re: Manufacturing Technology Using Grinding Methods 04/06/2009 6:34 AM
	__________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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2tinker Power-User Join Date: Nov 2006 Location: San Francisco Bay area Posts: 212 Good Answers: 15	#3 Re: Manufacturing Technology Using Grinding Methods 04/06/2009 6:39 AM
	Hello, Let me add to SB's. Assuming good shop practices are being used. Calculate the volume of stock to be removed. Allow enough stock for the grinder to set up and kiss-off the part. Leave only enough stock to clean up all surfaces with a safety factor agreed on with the grinder operator. Remember to have good centers and surfaces to hold onto for ID and OD grinding. Work out the stock allowance for centerless grinding with the CG operator also. __________________ I like 2 tinker-no, really!
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Sriram K Participant Join Date: Apr 2009 Location: Chennai, India Posts: 4	#4 Re: Cycle Time for Centerless and Internal Grinding 04/06/2009 11:51 AM
	For Centerless Grinding Parishudh 200 Material : EN 21 Wheel Size : 500 X 250 X 304.8 mm RPM : Not Sure Approx 4500 Wet Cooledge SL Grade 1H 30 At present we calculate in meters... We handle a shift for 8 hrs..in which 15 mins for setting.. 140 Meters = (No. Of Passes X Length X QTY ) / 1000 I am not sure whether this calulation is right....Or otherwise some say that it can also be calculated through surface area. OD = 60 ID = 60 Length= 100 Surface Area = (3.14 x D x L)/1000 __________________ "Nothing Changes Unless Something Changes"
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Sriram K Participant Join Date: Apr 2009 Location: Chennai, India Posts: 4	#5 Re: Cycle Time for Centerless and Internal Grinding 04/17/2009 2:08 AM
	Guyz kindly guide me whether can i use this calculation.... __________________ "Nothing Changes Unless Something Changes"
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2tinker (1); PWSlack (1); sb (1); Sriram K (2)

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