Chuck help for my CNC and Lathe...

[dfwcnc]

I have a Southbend heavy ten and need to run a small chuck, about a 4 inch to accomplish my task. In addition, i need one about the same size for my CNC, a table mount if you will. It was suggested by a friend that is incredibly knowledgable that I consider a 5c mount for the table of my Tormach. That way I can also ue it on my lathe.

I have two concerns: first that it will be so tall that it may reduce my ability to work small workpiece; and secondly, it will not be very stable. Your thoughts would be greatly appreciated.

Regards

 

[ki4byz]

<!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:ApplyBreakingRules/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <w:UseFELayout/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--> Use a plain back chuck, hold it in your 4 jaw on the lathe, and you toe clamp it on the mill table.
<!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} </style> <![endif]-->

 

[dfwcnc]

That will be my backup plan. Thanks for your help...

<!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:ApplyBreakingRules/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <w:UseFELayout/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--> Use a plain back chuck, hold it in your 4 jaw on the lathe, and you toe clamp it on the mill table.
<!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} </style> <![endif]-->

 

[DMS]

Any reason you can't just use a collet (5c) in that fixure? Seems like a lot of additional overhang with that chuck. I guess the real question is, do you need to pull it off of the lathe, do some work on the mill, and then put it back? If so, then a collet mount like that may be worth it, otherwise, the plain back chuck would be a better (and cheaper) solution.

It seems that if you have a CNC mill, and you are looking at a chuck for use there, then the real target on the mill would be a 4th axis. If not now, then in the future. It is at least something to consider.

 

[dfwcnc]

Yes, it will go from lathe to cnc and back to lathe for finishing. That's why the 5c chuck is so attractive.

I did get the new one, by the way, and it's measurements were off. It was to hold insight jaws .90, and it's actually 1.07inches. Why don't people know how to use calipers. Shees.

I have not put the chuck in yet, though. Been to busy with my real job. I'll get to it tomorrow though.

Any reason you can't just use a collet (5c) in that fixure? Seems like a lot of additional overhang with that chuck. I guess the real question is, do you need to pull it off of the lathe, do some work on the mill, and then put it back? If so, then a collet mount like that may be worth it, otherwise, the plain back chuck would be a better (and cheaper) solution.

It seems that if you have a CNC mill, and you are looking at a chuck for use there, then the real target on the mill would be a 4th axis. If not now, then in the future. It is at least something to consider.