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Thread: bout arf way thru some of it
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18th March 2012, 12:15 PM #1Senior Member
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bout arf way thru some of it
I have done this about a week ago so thought I'd try putting up some pics, so here goes. Fitting DRO scales to Chin Hung lathe.
Some final alignment checking after final tightening of mounting screws
Ditto.
Sorting the read head mounting
Cutting up old Al.bracket for some plate.
Plate machined and shaped to fit in ends of cover.
I recon it's a bugger of a job fitting scales and no matter how many mounting bits come with em there's always something you have to make or modify or sumsuch Another 4 pics to come, next post.
Cheers.
If I'm not right, then I'm wrong, I'll just go bend some more bananas.
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18th March 2012 12:15 PM # ADSGoogle Adsense Advertisement
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18th March 2012, 12:30 PM #2Senior Member
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DRO scale fitting
More
The long screw sticking out on the left is the stop for the tailstock.
Finally right.
Cover fitted, sure glad that's over with.
The new scales fitted to my old display. I want to try it out for a while fitted to the saddle. If I'm happy I'll then shorten the cables or at least enclose them in a tube mounted on the vertical or horizontal arm.
All working good
Cheers.
If I'm not right, then I'm wrong, I'll just go bend some more bananas.
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18th March 2012, 04:16 PM #3GOLD MEMBER
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hi mate that's interesting. in the first photo. you have some dials set up at the back of the cross slide.
how come and do you have any more photos?
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18th March 2012, 04:55 PM #4GOLD MEMBER
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You need to make sure that the scale is parallel to the bed and also that its level in the horizontal plane.
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18th March 2012, 09:12 PM #5Senior Member
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pipeclay answered your question, are there any areas or items in particular that you want pics of?, now that I've conquered posting pics it's fairly simple to do.
To expand on the scale set up. First the scale has to be mounted so when the mounting screws are tightened there is no twisting or bending being induced into the scale and that the scale is true, within parallelism tolerance , 0.1mm to 0.15mm to the slideways in both planes.
Second the read head is then set up so it is parallel to the scale in both planes and that the gap between scale and read head is within tolerance, this one's gap tolerance is 0.8mm to 1mm. It's prudent that the factory plastic spacer that is between the read head and scale is not removed until the read head is positioned fairly correctly. The plastic spacer is about 1mm thick so is a good guide during set up.
After slipping the plastic spacer out then tightening the screws that hold the read head to the mounting brackets the gap usually changes slightly so further adjusting or shimming is necessary. A suitable thickness feeler gauge is used at all corners of the read head to see if the gap is as close to correct as one can get it, usually a frustrating exercise.
Cheers.
If I'm not right, then I'm wrong, I'll just go bend some more bananas.Last edited by Log; 18th March 2012 at 09:15 PM. Reason: added some words for clarity, hopefully.
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19th March 2012, 08:59 AM #6Pink 10EE owner
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The scale on the x axis is mounted the same on my lathe.... It is a pity it cannot be mounted in a different way as it means you cannot use the dovetail built into the cross slide for other attachments..
Light red, the colour of choice for the discerning man.
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19th March 2012, 10:21 PM #7Senior Member
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Yea, bit of a pain that. I purposely mounted the scale as far towards the front of the cross slide as possible, ended up with about 5 inches of dovetail available at the back. If I ever wish to mount anything on the cross slide I'd make the mount to use the left side dovetail, what's available on the right, and drill and tap a hole towards the front on the right side to take a bolt.
Bugger also that you lose use of the cross slide lock screw.
Side tracked slightly now, I went and picked this up today.
Couple more pics to come in next post soon.
Two pages of info on Tony's site here
Page Title
Page Title
Cheers.
If I'm not right, then I'm wrong, I'll just go bend some more bananas.Last edited by Log; 19th March 2012 at 10:36 PM. Reason: wrong spelling
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19th March 2012, 10:32 PM #8Senior Member
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Bits and pieces. And plenty of grinding wheels, most of them new.
The little box on the right contains a bunch of small slitting saws, most are brand new.
I'm not going to do any major restoration on it, it runs, so I'll just clean it up a bit and start using it, see how it goes.
Cheers.
If I'm not right, then I'm wrong, I'll just go bend some more bananas.
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19th March 2012, 10:36 PM #9Pink 10EE owner
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Ahhhh an a r s e grinder... You see them for sale occasionally...
Light red, the colour of choice for the discerning man.
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19th March 2012, 10:43 PM #10
Hi Log,
Nice grinder, looks like you did pretty well with accessories as well, Does that whole table pivot?
Regards
Ray
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19th March 2012, 10:47 PM #11Senior Member
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19th March 2012, 10:49 PM #12Distracted Member
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Golly we'll be needing a show us your grinder thread at this rate...
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19th March 2012, 11:00 PM #13Senior Member
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Yes Ray the work table pivots on the top of the carriage.. Unfortunately it doesn't have fine adjustment at the end, only the hold down nut in the middle of table then hand bump the table to the degree reading just to the front of the nut.
I've worked out how I could fit a fine adjustment at the end with just leaving the clamp nut firm.
Cheers.
PS. Watch that .RC., he's a definite trouble maker
If I'm not right, then I'm wrong, I'll just go bend some more bananas.
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19th March 2012, 11:51 PM #14Senior Member
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Hey that's funny, in my post number 11 the letters I had for a word have been replaced by #### (4 hashes). It's the same word that .RC. used, but I see that he put spaces between the letters.
The bulletin board software must have replaced my letters with hashes, if so, isn't that quaint.
Cheers.
If I'm not right, then I'm wrong, I'll just go bend some more bananas.
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20th March 2012, 08:20 AM #15Distracted Member
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Yes there is a family-friendly language policy, which is enforced by a filter.
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