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IndustryArena Forum > MetalWorking Machines > Knee Vertical Mills > King Rich KRV-2000 Knee Mill CNC Conversion
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  1. #201
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    Re: King Rich KRV-2000 Knee Mill CNC Conversion

    New project to make a Mill Riser Block out of a piece of hydraulic cylinder 406 O.D. 340 I.D and 216mm long. It was bandsawn from a barrel 3.7m long that weighed 1300kg. This piece alone is around 75kg. A Mill riser block fits on top of the column and raises the turret 200mm to allow more clearance between the spindle and the table for larger jobs like boring a small engine or drilling with a long drill bit or tapping with a tapping head or working over a large rotary table or vise.
    They can be purchased for a Bridgeport secondhand for a reasonable price but the King Rich is a bit larger and very expensive. Access to a piece of stock like this made the project viable to build one..


  2. #202
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    Re: King Rich KRV-2000 Knee Mill CNC Conversion

    I needed to register the Riser Block to both the Column and the Turret.

    https://youtu.be/NNfbUSOSuYQ
    Attached Thumbnails Attached Thumbnails 20191209_130017 (1024x576).jpg   20200417_162539 (1024x576).jpg   20200417_162633 (1024x576).jpg  

  3. #203
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    Re: King Rich KRV-2000 Knee Mill CNC Conversion

    After sorting out a method of registering the riser block, the turret was lowered back into position and the head was trammed so I could continue machining.


  4. #204
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    Re: King Rich KRV-2000 Knee Mill CNC Conversion

    The tram is good but the surface finish can be improved by changing the tool path exit and including a spring pass.


  5. #205
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    Re: King Rich KRV-2000 Knee Mill CNC Conversion

    When I was happy with the surface finish on the first side, the riser block was flipped over and the rough sawn second side was machined flat.


  6. #206
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    Re: King Rich KRV-2000 Knee Mill CNC Conversion

    Installation required the 70kg riser block to be transfered from the table to the column.


  7. #207
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    Re: King Rich KRV-2000 Knee Mill CNC Conversion

    The 14 inch long 5/8 UNC hold down bolts had 15/16" AF hex heads. The original 6 inch bolts have 23mm AF heads which match the supplied ring spanners in the Mill Tool Kit.

    Attached Thumbnails Attached Thumbnails 20200421_172513 (720x1280).jpg  

Page 9 of 9 789

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