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A right hand helical gear is being cut on a milling machine. What changes in machine setting have to be made to cut a left hand helical gear ?

saurabhjain

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A right hand helical gear is being cut on a milling machine. What changes in machine setting have to be made to cut a left hand helical gear of same pitch and number of teeth ?

 

 



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For cutting right hand helical gear right side of milling table is tilted up from normal position by helix angle. For cutting left hand helical gear,right side of table needs to be tilted down at helix angle,all other settings remaining unchanged.

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I imagine the only change needed is to upload the sollidworks file for the file for a left-handed bit. It's an automated milling machine. Nothing else should be required. I can't any more changes are required. We have a similar mill at work, and I simply load the proper file to the PLC, and away it goes. 

 

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