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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
Posted to rec.crafts.metalworking
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What type of toolpost block is this?
I found this among my Aloris style blocks, and it's foreign to me.
Can anyone identify it? http://www.metalworking.com/dropbox/ filename is 'tool block cutoff 004a.jpg' |
#2
Posted to rec.crafts.metalworking
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What type of toolpost block is this?
On Mon, 25 Feb 2008 17:38:27 -0600, Rex wrote:
I found this among my Aloris style blocks, and it's foreign to me. Can anyone identify it? http://www.metalworking.com/dropbox/ filename is 'tool block cutoff 004a.jpg' Hey Rex, Not a lot of help, but it is somewhat similar to a Dickson I have on a 15" lathe. The one you have has squares guides, where mine has EXTERNAL V's , not internal like an Aloris or Phase II type. Aloris and Phase II styles are locked in place by dropping them onto the tool-post until bottoming the adjusting collar atop the tool-holder, and rotating the locking handle on the tool post, which in turn "pushes" the holding/locking cam "out" against the back of the tool-block and jams it tightly into the V-grooves. The locking handle is centralized on the tool-post and turning it forces ALL in turn, usually only two placements. You can't lock two tool-holder blocks on at once, as the cam is extending one "pusher" as it retracting the other(s). The Dickson operates slightly differently. Mine can hold three different tool-holder blocks at one time (three faces), and I believe some can do four or more. The tool-holder block is dropped onto a vacant side, into the slots on the tool-post, and the tool-holder drops down until the adjusting collar/ring comes to the stop/lock cam slightly above the tool-post top. Without a pix to send you, it is a bit difficult to explain what that is. Anyway, when the tool-holder is in position, the individual locking cam is turned, and it forces a cam/piston IN to lock the block in place, and at the same time grabs above and below the adjusting collar/ring to REALLY set the tool height to the place you adjusted it to at some previous time. This allows as many cutting tools as you can fit without interfering with one another. If you still really want to see one, I'll take some pix of mine and sent them to you. Take care. Brian Lawson, Bothwell, Ontario. |
#3
Posted to rec.crafts.metalworking
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What type of toolpost block is this?
On 2008-02-25, Rex wrote:
I found this among my Aloris style blocks, and it's foreign to me. Can anyone identify it? http://www.metalworking.com/dropbox/ filename is 'tool block cutoff 004a.jpg' Hmm ... first, that may have been the name when you submitted it, but the name has been automatically changed to "tool_block_cutoff_004a.jpg" because spaces in file names are awkward on some systems. Also, you are lacking the requested ".txt" file named to match the others to help people who stumble across it years from now to understand *why* it is there. Second -- I don't think that is an Aloris, with the "T-slot" in place of the dovetail. It would have been interesting to include a second and perhaps third viewpoint, but that would only be to see how much the rest of it resembled an Aloris. The height adjusting nut and lock nut seem to lack the keyed washer between them common with true Aloris toolposts. I suspect that it was a homebrew form of quick-change holder for a homebrew toolpost. Put it on eBay (with dimensions and the note that it is *not* dovetailed Aloris style, even though it looks like one at first glance. You'll probably find someone who has a matching toolpost --or who thinks that he does. :-) If the parting blade angle is reversed, it might even work well with a home-made rear mount toolpost specifically for parting off. I might even try to make a matching post myself for that. :-) Enjoy, DoN. -- Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
#4
Posted to rec.crafts.metalworking
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What type of toolpost block is this?
On 2008-02-26, Brian Lawson wrote:
On Mon, 25 Feb 2008 17:38:27 -0600, Rex wrote: I found this among my Aloris style blocks, and it's foreign to me. Can anyone identify it? http://www.metalworking.com/dropbox/ filename is 'tool block cutoff 004a.jpg' Hey Rex, Not a lot of help, but it is somewhat similar to a Dickson I have on a 15" lathe. The one you have has squares guides, where mine has EXTERNAL V's , not internal like an Aloris or Phase II type. Aloris and Phase II styles are locked in place by dropping them onto the tool-post until bottoming the adjusting collar atop the tool-holder, and rotating the locking handle on the tool post, which in turn "pushes" the holding/locking cam "out" against the back of the tool-block and jams it tightly into the V-grooves. The locking handle is centralized on the tool-post and turning it forces ALL in turn, usually only two placements. You can't lock two tool-holder blocks on at once, as the cam is extending one "pusher" as it retracting the other(s). That depends on the version. What you are describing is the "piston" style, while most Aloris genuine ones are "wedge" style, which works by making the dovetail wider and thus drawing in the toolholder to firmly press against the toolpost, instead of pushing it out and depending on the wings of the dovetail for rigidity. Almost all modern Aloris toolposts are wedge style, though they *did* make a piston style one in the earlier years. Most of the clones are offered in your choice of piston style (cheaper) or wedge style (more expensive). I got the wedge style, and am glad that I did. However, the precise point at which the dovetail is wide enough to lock up is probably slightly different between two holders on different dovetails, and the tools interfere with each other anyway, so one holder at a time is still the rule, even with the wedge style toolpost. Note that a piston style toolpost allows the locking handle to rotate a full 360 degrees around the toolpost when there is no tool holder installed -- and it has been known to get the handle and knob into the path of the chuck jaws. The wedge style has a limited swing for the handle of something like 120 degrees. The Dickson operates slightly differently. Mine can hold three different tool-holder blocks at one time (three faces), and I believe some can do four or more. The tool-holder block is dropped onto a vacant side, into the slots on the tool-post, and the tool-holder drops down until the adjusting collar/ring comes to the stop/lock cam slightly above the tool-post top. Without a pix to send you, it is a bit difficult to explain what that is. Anyway, when the tool-holder is in position, the individual locking cam is turned, and it forces a cam/piston IN to lock the block in place, and at the same time grabs above and below the adjusting collar/ring to REALLY set the tool height to the place you adjusted it to at some previous time. This allows as many cutting tools as you can fit without interfering with one another. The "interfering with each other" is the problem. I have a Dickson style which is smaller -- for an Emco-Maier Compact-5/CNC lathe, and it has only two stations, but I can still only use one at a time. One station is for turning, the other for boring and facing, so the tools point in directions to cross and interfere with each other. I guess that with a three-station toolpost, you could mount two tools on the opposite stations, leaving the boring/facing station empty. I'm not sure how useful that would be, however. If you still really want to see one, I'll take some pix of mine and sent them to you. There have been recent discussions of this very style, with links posted pointing to images, so just go back and look at the series of articles about a Clausing 5914 lathe (which the poster received with a Dickson style toolpost -- much beat up as it turns out). Enjoy, DoN. -- Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
#5
Posted to rec.crafts.metalworking
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What type of toolpost block is this?
[...]
The Dickson operates slightly differently. Mine can hold three different tool-holder blocks at one time (three faces), and I believe some can do four or more. The tool-holder block is dropped onto a vacant side, into the slots on the tool-post, and the tool-holder drops down until the adjusting collar/ring comes to the stop/lock cam slightly above the tool-post top. Without a pix to send you, it is a bit difficult to explain what that is. Anyway, when the tool-holder is in position, the individual locking cam is turned, and it forces a cam/piston IN to lock the block in place, and at the same time grabs above and below the adjusting collar/ring to REALLY set the tool height to the place you adjusted it to at some previous time. This allows as many cutting tools as you can fit without interfering with one another. The "interfering with each other" is the problem. I have a Dickson style which is smaller -- for an Emco-Maier Compact-5/CNC lathe, and it has only two stations, but I can still only use one at a time. One station is for turning, the other for boring and facing, so the tools point in directions to cross and interfere with each other. I guess that with a three-station toolpost, you could mount two tools on the opposite stations, leaving the boring/facing station empty. I'm not sure how useful that would be, however. I do a job occasionally in which I save some machining steps by having 2 toolholders in the Dickson, one slung so one tool passes slightly under the other. The part has a recess in one end and a shoulder the other, I use a trepanning tool to form the recess and shoulder, in separate ops, and so bring the tool in along the lathe axis. I have a chamfering tool slung under the trepanning tool so it cuts a chamfer on the OD on the face with the recess and at the edge of the shoulder. Takes little time to set-up and saves quite a bit of time compared to swapping out the toolholders for the trepanning and chamfering ops. I thought you last post of 5:39 on the machine screw thread excellent and summed up everything very well with regards the general feeling with the facts or lack of them given by the OP. I probably shan't make any further contribution there as the OP seems to be unwilling to clarify the breakage situation. If you still really want to see one, I'll take some pix of mine and sent them to you. There have been recent discussions of this very style, with links posted pointing to images, so just go back and look at the series of articles about a Clausing 5914 lathe (which the poster received with a Dickson style toolpost -- much beat up as it turns out). Enjoy, DoN. |
#6
Posted to rec.crafts.metalworking
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What type of toolpost block is this?
DoN. Nichols wrote:
On 2008-02-25, Rex wrote: I found this among my Aloris style blocks, and it's foreign to me. Can anyone identify it? http://www.metalworking.com/dropbox/ filename is 'tool block cutoff 004a.jpg' Hmm ... first, that may have been the name when you submitted it, but the name has been automatically changed to "tool_block_cutoff_004a.jpg" because spaces in file names are awkward on some systems. Yep, got the auto-email Also, you are lacking the requested ".txt" file named to match the others to help people who stumble across it years from now to understand *why* it is there. It was uploaded with the JPG file. Shrug. I'll repost Second -- I don't think that is an Aloris, with the "T-slot" in place of the dovetail. It would have been interesting to include a second and perhaps third viewpoint, but that would only be to see how much the rest of it resembled an Aloris. The height adjusting nut and lock nut seem to lack the keyed washer between them common with true Aloris toolposts. I know it's not an Aloris. i have an Aloris and a Phase II. I suspect that it was a homebrew form of quick-change holder for a homebrew toolpost. Possible, as it has no markings anywhere on it. It's very well made though. Put it on eBay (with dimensions and the note that it is *not* dovetailed Aloris style, even though it looks like one at first glance. You'll probably find someone who has a matching toolpost --or who thinks that he does. :-) That's probably what I'll do, but I figured if I could identify it, someone here or on one of the forums would recognize it and I could do a swap. At any rate, ebay results are always better with a positive ID. If the parting blade angle is reversed, it might even work well with a home-made rear mount toolpost specifically for parting off. I might even try to make a matching post myself for that. :-) I'm pretty sure it's in the normal orientation for front-side parting. |
#7
Posted to rec.crafts.metalworking
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What type of toolpost block is this?
One more time, reposted as tool_block_cutoff.jpg and .txt
Rex wrote: I found this among my Aloris style blocks, and it's foreign to me. Can anyone identify it? http://www.metalworking.com/dropbox/ filename is 'tool block cutoff 004a.jpg' |
#8
Posted to rec.crafts.metalworking
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What type of toolpost block is this?
On 2008-02-26, David Billington wrote:
[...] [ ... ] The "interfering with each other" is the problem. I have a Dickson style which is smaller -- for an Emco-Maier Compact-5/CNC lathe, and it has only two stations, but I can still only use one at a time. One station is for turning, the other for boring and facing, so the tools point in directions to cross and interfere with each other. I guess that with a three-station toolpost, you could mount two tools on the opposite stations, leaving the boring/facing station empty. I'm not sure how useful that would be, however. I do a job occasionally in which I save some machining steps by having 2 toolholders in the Dickson, one slung so one tool passes slightly under the other. The part has a recess in one end and a shoulder the other, I use a trepanning tool to form the recess and shoulder, in separate ops, and so bring the tool in along the lathe axis. I have a chamfering tool slung under the trepanning tool so it cuts a chamfer on the OD on the face with the recess and at the edge of the shoulder. Takes little time to set-up and saves quite a bit of time compared to swapping out the toolholders for the trepanning and chamfering ops. O.K. That sounds like an intersting way to use them, and for the chamfering, the below center would only somewhat change the angle of the chamfer. I thought you last post of 5:39 on the machine screw thread excellent and summed up everything very well with regards the general feeling with the facts or lack of them given by the OP. I probably shan't make any further contribution there as the OP seems to be unwilling to clarify the breakage situation. Agreed. I'm getting close to killfiling him, because I remember him coming in with some other question some time ago, and being similarly confrontational. Not sure about the 5:39 post time. I was posting between about 8:00 PM and perhaps 1:00 AM -- but it may be that your newsreader is translating the date/time information for your specific locale. Since you are in the UK, there would be about a five hour difference. Right now, it is 10:46 PM local time, and 3:46 AM GMT, so a posting somewhat after midnight here would have been posted somewhat after 5:00 AM there. I'm too deep into the reply to check your newsreader in the headers. Enjoy, DoN. -- Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
#9
Posted to rec.crafts.metalworking
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What type of toolpost block is this?
On 2008-02-26, Rex wrote:
One more time, reposted as tool_block_cutoff.jpg and .txt It may have rejected the new image, but it accepted the ".txt" so you are fine now. (Though a photo of the other side would be nice.) Enjoy, DoN. -- Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
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