Vacuum part holding for milling
What's the rule of thumb for amount of vacuum/pressure required to hold
a flat part for milling operations? I need to machine up aluminum and plastic plates. Aluminum plate 4"x4" square flat plastic puck 2.5" round Can anybody point me to some links for low cost DIY alternatives to buying a plate/pump set? TIA, Mike |
Vacuum part holding for milling
Cool idea for the fridge pump, never thought of that. I was thinking
of butchering an old portable air compressor. |
Vacuum part holding for milling
Mikester wrote:
What's the rule of thumb for amount of vacuum/pressure required to hold a flat part for milling operations? I need to machine up aluminum and plastic plates. Aluminum plate 4"x4" square flat plastic puck 2.5" round Can anybody point me to some links for low cost DIY alternatives to buying a plate/pump set? TIA, Mike This has been discussed extensively before. Google this group for _vacuum, fixture, pump_ etc. fred |
Vacuum part holding for milling
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Vacuum part holding for milling
On 25 Mar 2006 05:20:39 -0800, "Mikester" wrote:
What's the rule of thumb for amount of vacuum/pressure required to hold a flat part for milling operations? I need to machine up aluminum and plastic plates. Aluminum plate 4"x4" square flat plastic puck 2.5" round Can anybody point me to some links for low cost DIY alternatives to buying a plate/pump set? TIA, Mike Someone may wish to mention safety concerns if it comes loose .... -- Cliff |
Vacuum part holding for milling
On Sat, 25 Mar 2006 19:18:52 -0500, Cliff wrote:
On 25 Mar 2006 05:20:39 -0800, "Mikester" wrote: What's the rule of thumb for amount of vacuum/pressure required to hold a flat part for milling operations? I need to machine up aluminum and plastic plates. Aluminum plate 4"x4" square flat plastic puck 2.5" round Can anybody point me to some links for low cost DIY alternatives to buying a plate/pump set? TIA, Mike Someone may wish to mention safety concerns if it comes loose .... I had a job years ago that required removing .062" from a 20" long 1" wide aluminum bar. Double sided tape was the method I chose. I did think about the parts coming loose because all the material was being removed in one pass. I made sure that when the parts came loose they were thrown away from me. And out of a couple hundred parts 4 or 5 did come loose. ERS |
Vacuum part holding for milling
Mikester wrote: What's the rule of thumb for amount of vacuum/pressure required to hold a flat part for milling operations? I need to machine up aluminum and plastic plates. Aluminum plate 4"x4" square flat plastic puck 2.5" round Can anybody point me to some links for low cost DIY alternatives to buying a plate/pump set? TIA, Mike I've no experience with vacuum chucking, probably never will. Just a thought, though - is there some reason that you would not use solid stops, particularly in the direction of the cutting force? Seems that would help a lot. John Martin |
Vacuum part holding for milling
Cliff wrote: Snip Can anybody point me to some links for low cost DIY alternatives to buying a plate/pump set? TIA, Mike Someone may wish to mention safety concerns if it comes loose .... I'm qualified- make sure there's something substantial between you and the part. An unobstructed view can be more unobstructed than you care to experience. Later, Charlie |
Vacuum part holding for milling
On 27 Mar 2006 09:53:35 -0800, "John Martin"
wrote: Mikester wrote: What's the rule of thumb for amount of vacuum/pressure required to hold a flat part for milling operations? I need to machine up aluminum and plastic plates. Aluminum plate 4"x4" square flat plastic puck 2.5" round Can anybody point me to some links for low cost DIY alternatives to buying a plate/pump set? TIA, Mike I've no experience with vacuum chucking, probably never will. Just a thought, though - is there some reason that you would not use solid stops, particularly in the direction of the cutting force? Seems that would help a lot. John Martin Solid stops are used. Or should be. At least for locating. But sometimes the cutting forces lift the part from the chuck. Then the part can fly out. ERS |
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