Universal Grinder Questions. Looking At Buying One Used
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    Default Universal Grinder Questions. Looking At Buying One Used

    Good day. we are looking at a production job of molding 70A urethane on some aluminum hubs about 10 inches in diameter and a face width of 1.5 inches. The concentricity requirements force us to grind the tire O.D. The volume is too much to handle on an engine lathe with a tool post grinder. Would this be the best machine tool to buy to handle this work? I was thinking of a fixture in the chuck with a quick acting knob for mounting/dismounting the parts quickly. I have zero experience with this type of machine that is why I am asking. Are there ones to avoid and ones that are better to get? Thanks

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    Let us know what the production rate you're targeting is, as well as other issues (do you want a robot loader, any precision requirements, are you planning for fire risks, etc.).

    With as simple a process as it seems, a purpose-modified lathe may work well for you. Removing the compound and adding a dedicated grinding spindle isn't hard.

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    Quote Originally Posted by Terry Z View Post
    Good day. we are looking at a production job of molding 70A urethane on some aluminum hubs about 10 inches in diameter and a face width of 1.5 inches. The concentricity requirements force us to grind the tire O.D. The volume is too much to handle on an engine lathe with a tool post grinder. Would this be the best machine tool to buy to handle this work? I was thinking of a fixture in the chuck with a quick acting knob for mounting/dismounting the parts quickly. I have zero experience with this type of machine that is why I am asking. Are there ones to avoid and ones that are better to get? Thanks
    How doo you fixture these to the lathe ?

    why not a simple 2 axis CNC Gang style lathe with the toolpost grinder on it ?

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    Quote Originally Posted by digger doug View Post
    why not a simple 2 axis CNC Gang style lathe with the toolpost grinder on it ?
    They probably could use more "grunt" than a typical toolpost grinder would offer, so my suggestion in post 2.

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    Quote Originally Posted by Milland View Post
    They probably could use more "grunt" than a typical toolpost grinder would offer, so my suggestion in post 2.
    Yes, you can get them quite large (toolpost grinders) IIRC Ox did mount a Setco Largish one on a CNC lathe.

    The Gang style CNC lathes are simple, and give you plenty of room to fixture up the grinder. Along with having a power chuck/collet system for easy load/unload.

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    Quote Originally Posted by Terry Z View Post
    Good day. we are looking at a production job of molding 70A urethane on some aluminum hubs about 10 inches in diameter and a face width of 1.5 inches. The concentricity requirements force us to grind the tire O.D.
    I’m curious, will you tell me more about grinding the urethane? Room temperature? What wheel?

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