Deburring of Crankshaft timing sprocket.

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shesh Active Contributor Join Date: Jan 2006 Posts: 15	Deburring of Crankshaft timing sprocket. 12/20/2009 12:25 AM
	Hi , I am developing a Crankshaft sprocket for a domestic customer where I find deburring of teeth after CNC turning on this cold forged part is extremely difficult due to the burr folding on to the parent material which acts soft while trying to remove by deburring wheels. Also the machined teeth area are not accesible for manual deburring method also. I tried doing deburring after hardening of the part to around 28HRc, still the burr folding is seen and is difficult to remove the burr. Can somebody help me in solving this as this part we are going to productionise soon and i need a suitable solution and machine for the same. Shesh.
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IMEXSU Participant Join Date: Dec 2009 Location: Mumbai - INDIA & Kriens - Switzerland Posts: 2	#1 Re: Deburring of Crankshaft timing sprocket. 12/20/2009 4:05 AM
	Visit http://www.box.net/shared/8kezya49xi Regards Praveen Panchal www.de-burring.com
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pantaz Guru Join Date: Feb 2008 Location: Van Nuys, CA Posts: 563 Good Answers: 33	#2 Re: Deburring of Crankshaft timing sprocket. 12/20/2009 7:55 AM
	Shot-blasting (or sand, or glass bead); vibratory tumbling; electro-chemical deburring.
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lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#3 Re: Deburring of Crankshaft timing sprocket. 12/20/2009 12:37 PM
	pantaz has given you some solutions. My suggestion is to alter the cutting process so that no burr is left after machining. Can't give any more help without knowledge of the gear cutting process used now. Since we have no way of knowing where you, are the fact that it is a domestic customer is meaningless. If you are going into production soon, I'd hire someone who knows how to cut gears to come up with a solution. The free advice you get here is worth what you pay for it. You need someone on-site. Bite the bullet and hire a consultant.
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isloorkar Commentator Join Date: Jan 2008 Location: Pune, India Posts: 59 Good Answers: 4	#4 Re: Deburring of Crankshaft timing sprocket. 12/22/2009 9:01 AM
	22.12.09 If you are in a developing country, manual deburring is the most cost effective and socially tenable solution. It also depends on where you are placed in the supply chain. As you move up, manual deburring becomes infra dig. If your volumes are high, you should assess thermal deburring. Go to any search engine and you will hit pay dirt on information. I am told in places like UK, thermal deburring as jobbing is pretty well organised. I would still fall back on manual inspection/deburring post thermal deburring.
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DOC_SLS Participant Join Date: Dec 2009 Posts: 1	#5 Re: Deburring of Crankshaft timing sprocket. 12/22/2009 10:59 AM
	Have you tried a vibratory mill for deburring? DOC_SLS
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DOC_SLS (1); IMEXSU (1); isloorkar (1); lyn (1); pantaz (1)

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