- Build Thread- King Rich KRV-2000 Knee Mill CNC Conversion
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12-17-2019, 04:21 AM
#201
Member
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..
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04-22-2020, 09:59 PM
#202
Member
Re: King Rich KRV-2000 Knee Mill CNC Conversion
I needed to register the Riser Block to both the Column and the Turret.
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04-22-2020, 10:13 PM
#203
Member
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.
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04-22-2020, 10:18 PM
#204
Member
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.
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04-22-2020, 10:21 PM
#205
Member
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.
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04-22-2020, 10:25 PM
#206
Member
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04-22-2020, 10:41 PM
#207
Member
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.
Last edited by BMSTECH; 04-22-2020 at 11:02 PM.
- Build Thread- King Rich KRV-2000 Knee Mill CNC Conversion
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