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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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return spring for rockwell quill
There is no spring on the quill of my rockwell vertical mill. I find this so annoying because the quill has dropped a few time which usually breaks a tip off an endmill or puts a dent in the workpiece. The mill has a lever on the right side with a collar that is 1.75 inchs in diameter that looks like a perfect place for a flat spring. Has anyone added a quill return spring to a rockwell vertical mill?? If so, I would really like to hear about it! Otherwise I will invent something cause I hate trashing expensive endmills! chuck |
#2
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"Charles A. Sherwood" wrote in message ... There is no spring on the quill of my rockwell vertical mill. I find this so annoying because the quill has dropped a few time which usually breaks a tip off an endmill or puts a dent in the workpiece. The mill has a lever on the right side with a collar that is 1.75 inchs in diameter that looks like a perfect place for a flat spring. Has anyone added a quill return spring to a rockwell vertical mill?? If so, I would really like to hear about it! Otherwise I will invent something cause I hate trashing expensive endmills! chuck What, it didn't have one originally? I have a hard time believing that, though I guess it's possible. A quill without a return spring is totally useless. I rely on the feel of the quill for sensitive drilling, which would be only one reason to have a return spring. With that in mind, if you end up clooging up something, remember you still want to retain the feel. Good luck! Harold |
#3
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What, it didn't have one originally?
My rockwell does not have a quill return spring and looks like it never did. My friend owns a clausing 8520 and it does not have a quill return spring either so I figured this was common practice on small machines. I rely on the feel of the quill for sensitive drilling, Yea, and there is litte feel with the full weight of the spindle on a small drill bit. It forces you to hold the weight back instead of pushing the quill down. Then when you are drilling a larger hole you have the weight of the spindle to help you push and it makes the drill jump through the bottom of the hole. Still my major grip is the damage to workpieces and cutters when I slipup and the quill drops. This has only happened a couple times but it is so damn annoying that it is time to do something about it. I looked in MMC and they sell constant force flat springs. I think I need a fairly strong spring and the strong springs on MMC are pretty wide. I need to determine the required strength before doing much else. chuck |
#4
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On 12 Jan 2005 20:18:21 GMT, Charles A. Sherwood wrote:
What, it didn't have one originally? My rockwell does not have a quill return spring and looks like it never did. My friend owns a clausing 8520 and it does not have a quill return spring either so I figured this was common practice on small machines. Maybe I missed it, but did you post a model number or a link to photos? I've got a small-ish Rockwell mill from the 70's that might be similar enough to get useful information from (as well as the manuals for same) Dave Hinz |
#5
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Maybe I missed it, but did you post a model number or a link to photos?
I did not post a link but my machine looks pretty much like the rockwell milling machine picture at: http://www.lathes.co.uk/rockwellmillers/ If you look at the right hand side of the head you will see the quill lever. I am proposing to add a return spring around the base of the quill lever with a flat spring to keep the spindle from dropping when the quill lock is released. simple concept that seem common now on even cheap drill presses. Hey there is a source for a spring! chuck |
#6
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On 12 Jan 2005 22:01:00 GMT, Charles A. Sherwood wrote:
Maybe I missed it, but did you post a model number or a link to photos? I did not post a link but my machine looks pretty much like the rockwell milling machine picture at: http://www.lathes.co.uk/rockwellmillers/ Yes, that's my mill. If you look at the right hand side of the head you will see the quill lever. I am proposing to add a return spring around the base of the quill lever with a flat spring to keep the spindle from dropping when the quill lock is released. I'll take a look this evening. Does your email address work and can I send you some digital photos, or would you prefer I put them on a webpage? (either is simple). simple concept that seem common now on even cheap drill presses. Hey there is a source for a spring! I have the parts manual for the mill, can probably get you a part number if you think that'll help? Dave Hinz |
#7
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#8
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"Harold & Susan Vordos" wrote in message ... "Charles A. Sherwood" wrote in message ... There is no spring on the quill of my rockwell vertical mill. I find this so annoying because the quill has dropped a few time which usually breaks a tip off an endmill or puts a dent in the workpiece. The mill has a lever on the right side with a collar that is 1.75 inchs in diameter that looks like a perfect place for a flat spring. Has anyone added a quill return spring to a rockwell vertical mill?? If so, I would really like to hear about it! Otherwise I will invent something cause I hate trashing expensive endmills! chuck What, it didn't have one originally? I have a hard time believing that, though I guess it's possible. A quill without a return spring is totally useless. I rely on the feel of the quill for sensitive drilling, which would be only one reason to have a return spring. With that in mind, if you end up clooging up something, remember you still want to retain the feel. As Chuck mentioned the old Clausing 8520 knee mill (2/3 BP size) also lacks a quill return spring I've managed to screw up a couple of parts in mine when the quill dropped unexpectedly. Another 8520 owner uses a coiled compression spring over the drawbar between the spindle pulley and the draw bar nut and sent me one to try out. Seems to work OK but reduces quill travel from 3" to about 2" so I don't use it much. The spindle pulley uses spring-loaded plastic disks through a couple cross drilled, tapped holes that are perpendicular to the splined spindle shaft and these are apparently intended to bear against the splined shaft and impart some drag to resist gravity in its desire to drop the spindle. A true return spring would be a lot better, methinks. Mike |
#9
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I'll take a look this evening. Does your email address work and can I send you some digital photos, or would you prefer I put them on a webpage? (either is simple). You can send pictures to this address. Are you saying your rockwell does have a return spring??? I have the parts manual for the mill, can probably get you a part number if you think that'll help? I don't think you can buy parts from rockwell anymore, but it would be interesting to find out if some mills had return springs. chuck |
#10
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On 13 Jan 2005 16:40:54 GMT, Charles A. Sherwood wrote:
I'll take a look this evening. Does your email address work and can I send you some digital photos, or would you prefer I put them on a webpage? (either is simple). You can send pictures to this address. Are you saying your rockwell does have a return spring??? Checked last night, and it does not. My other mill (a small one) does. I was confused between the two. I have the parts manual for the mill, can probably get you a part number if you think that'll help? I don't think you can buy parts from rockwell anymore, but it would be interesting to find out if some mills had return springs. Nope, sorry. Nice machine, though, isn't it? Dave Hinz |
#11
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Nope, sorry. Nice machine, though, isn't it? I have a rockwell combo vertical/horizontal mill. I really do like it a lot. Its just too cool for school! Power feed would be nice though. DRO would be nice too. chuck |
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