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  1. #16
    Join Date
    Jul 2014
    Location
    Alphen aan den Rijn, Netherlands
    Posts
    188

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    Hi Dan,
    That's a very nice grinder. I see you can operate it from both sides. The left side ( for the viewers) was standard. The right side controls were an option. And if I am right, you also have the micro adjustable stop dogs? Nice!
    You do realise the front to back movement of the table uses the same rollers as the left to right?
    (I think it would be the X and Z axis, but I get confused about how to name the axis)
    That's what makes it possible to use the copy grinding attachment and differs between the U1 and the U2 grinder (yours). By the way, when I inquired about the rollers this is what I was told:
    Roller 10*14, SKF partnr. RC-10x14-c, package of 100, 99,68.
    Roller 12*12, SKF partnr. RC-12x12-c, package of 100, 159,77.
    I see your copying attachment has a roller on the front? Mine is just a solid piece. Would it be possible to show some detail pictures of the "finger" and what I presume is the holder for templates?
    You have a nice way of storing all the different accessories for the grinder. All the parts together in a box, never looking for the parts you need to use it.
    Are all accessories complete? I am missing the drive wheel for the vertical grinding head and would really appreciate some pictures and dimensions so I can make one.
    Also what size wheels do you have with the internal grinding attachment? I don't have all of these either.
    By the way, what is the large part in the box between the internal grinding attachment and the clearance angle setting dog?
    If you need info for parts you are missing and want to make, I have all kinds of parts, so I might be able to help.

    Peter

  2. #17
    Join Date
    Jul 2014
    Location
    Alphen aan den Rijn, Netherlands
    Posts
    188

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    Dan,
    this pdf contains the first version of the manual translation. I have translated the first 12 pages of the brochure. I am not a native english speaker, so I assume there will be some language issues, but the content should be correct and hopefully understandable.
    If anyone has corrections, please feel free to send them to me, so I can include them in the next version.

    When I have translated more pages I will post a new pdf in this thread.

    Peter
    Attached Files Attached Files

  3. #18
    Join Date
    Jun 2017
    Location
    Squamish BC Canada
    Posts
    8

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    Hi Peter,

    I see that you have been working hard! Sorry, I haven't had a chance to respond to your earlier post. You are correct, the bearing quantities listed were for the longitudinal slide only. I would definitely
    want to order enough to do both axis. Do you know what grade they were?

    As far as I know, the attachments I do have are all complete.
    There are four "fingers" (no pun intended) for the form tracer and a long bar that gets mounted on the back side with a T slot in it.
    • small bearing
    • ball
    • chisel point
    • blunt point

    I will take some pictures of these and measure the bar. There are also 4 counterweights that hang on a cable that hold or press the table against the finger. You can add or remove weight as needed

    The large item that you are referring to is part of the relief grinding attachment. In fact all of the parts in that box except for the id grinding attachment are part of it. You can get a basic idea of the setup from the service section in the manual pg 75/76 ...ish. Trying to figure out how the form relief attachment works is what brought me to this forum. To be honest I'm only half way there. The front half is similar to Harig Step Grinding Tool but the other end uses this bar and the clearance setting dog.

    Also, the pulley on the vertical grinding attachment is crowned. I will do my best to estimate the curve and take a few pictures of that as well.
    I can see from one of your earlier posts that you have a few attachments that I need information on. I will have to look back and make up a list of parts that I am trying to reconstruct.
    Do you use any CAD programs?

    Dan

  4. #19
    Join Date
    Jul 2014
    Location
    Alphen aan den Rijn, Netherlands
    Posts
    188

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    Hi Dan,
    It took me some time to finish the translation (except the work it took I also went on holidays and live in general ), but here it is finally. I hope it is what you were expecting.
    If anyone provides feedback I am more than happy to update this version to improve it. Especially translating the technical terms took a lot of time, and those need to be accurate too! So if I went wrong somewhere, please let me know, I won't be offended I promise .

    in reply to your post:
    I have no idea what grade the rollers are. no grade was given by the supplier either when I inquired.
    There is a little information about the relief grinding attachment (backing off attachment) in the translation. maybe it will help a little. As far as I understand it does more than just grind relief, it does it in a special way that conserves the profile of cutters when sharpening. And I learned from the translation you need a table to set it up. Do you have the table with the attachment? Unfortunately I don't own this attachment and have never seen one, so I won't be much help there. I would appreciate it if you post your findings, in case I lay my hands on one one day....
    I am happy to provide you with info on the attachments you would like to fabricate. I do have a CAD program, but I am having trouble learning it. I can try but I will be learning at the same time so it will be slow. I do enjoy drawing on paper though.

    Peter

    P.s. If you have time and opportunity I am still interested in pictures and dimensions.
    Attached Files Attached Files

  5. #20
    Join Date
    Nov 2008
    Location
    Perth WA
    Age
    65
    Posts
    5,917

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    That is impressive work Peter for a non native English speaker. Well done !!

    Bob.

  6. #21
    Join Date
    Jun 2017
    Location
    Squamish BC Canada
    Posts
    8

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    Hi Peter,

    Thank you for all of your hard work. Great Job!

    Like you I have have been very busy with the shop, holiday's, life.
    At this point I don't have any dimensions but here are some more pics of the copying attachment and such.
    I will look back and review which parts you need and make up a sketch in the next day or so.

    Thanks again for all your hard work, very helpful.
    Dan
    Attached Images Attached Images

  7. #22
    Join Date
    Jun 2017
    Location
    Squamish BC Canada
    Posts
    8

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    Also, attached is a copy of the Harig Step grinder manual. As you will see it contains some great information and the set-up as described works great for the hembrug attachment.
    Attached Files Attached Files

  8. #23
    Join Date
    Jul 2014
    Location
    Alphen aan den Rijn, Netherlands
    Posts
    188

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    Hi Dan,
    I hope you have found some time to make progress with your grinder.
    Thanks for the pictures.
    I do have the wheel on the vertical grinding attachment, but would appreciate a picture and some dimensions of the pulley that needs to be on the main grinding spindle to drive the flat belt to the vertical head. That is the one I am missing unfortunately.

    Is the roller on the copying attachment just a wheel on an axle? Or is there some form of bearing. Is the diameter of the wheel critical?

    The copying attachment tips look interesting. Unfortunately your picture is out of focus, so I can't be sure, but the left one looks like it has a ball. Does it rotate, how is it attached?
    The middle one looks wedge shaped and I think is the one I have. The right one I am not sure what it is.
    Do you have any idea when a certain tip would be used? I haven't used the copying attachment yet.
    Peter

  9. #24
    Join Date
    Jul 2014
    Location
    Alphen aan den Rijn, Netherlands
    Posts
    188

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    P.s. thanks for the Harig manual. I hope to find the AI attachment one day and then it will come in very handy I am sure!
    Peter

  10. #25
    Join Date
    Jun 2017
    Location
    Squamish BC Canada
    Posts
    8

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    Hi Peter,

    I hope that you find these pics of the tips a bit more helpful. As you can see, the tips that have the blunt chisel, flat chisel tip (similar to yours) and the bearing types have a pin to locate the axis of the tip, the ball does not.
    The bearing is 9.5mm o.d. but, I think that any small bearing would work. I am assuming you would make the correction on the template to accommodate a bearing of a different size if need be.
    Also the shafts of the tips are tapered from 15.7mm to 14.7 mm over 27mm. Similar to a morse taper...kinda.

    The form holding bar is 39.4mm high x 19.5 mm wide x 350mm long. The T-slots are 10mm deep, 6mm at the neck and 10.6 mm wide. Again, you could probably make this to suit what you have. There are 2 locating pins as well. Might want to check your machine for the bolt hole spacing and the location of these pins. Time is pretty short these days but, I will try to set up the whole thing for a demonstration.

    To be honest I haven't really used the copying attachment that much either and the blunt tips don't seem all that useful upon first inspection. The one template that I got with the machine was a simple half circle that the bearing rolled perfectly against and was probably used to form grind and arc of some sort. Other copy type grinders use a scaled template to grind special form cutters/saws etc.

    As for the vertical grinding attachment pulley, I am still deciphering that from the manual and comparing it to a box of misc pulleys that I have. Not too hopeful though. Will let you know.

    ...and I spoke to an applications engineer at SKF 12 x 12 rollers and 10 x 14 rollers are available(stock germany). 10 x 12 rollers not available however, I am trying to find a bearing that has that size in it possibly hoping to strip them out. It's either that or break down and buy them from China. In quantities of 500. Again will let you know.

    Dan
    Attached Images Attached Images

  11. #26
    Join Date
    Jul 2014
    Location
    Alphen aan den Rijn, Netherlands
    Posts
    188

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    Dan,
    Thanks very much for the pictures and information. In time I will make the bearing type follower for sure. Maybe the ball type, not sure about its application though.
    About the pulley for the vertical head: I know the pulley itself should be the same as the one on the head. It needs to have a different mounting though (longer as a minimum..)
    I have seen a few vertical heads and for some reason none have the pulley for the main head AI Hembrug universal grinder
    I am sure I can coble something together, but would prefer to copy the original.
    Peter

  12. #27
    Join Date
    Jul 2014
    Location
    Alphen aan den Rijn, Netherlands
    Posts
    188

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    I also found this file. Maybe you have already seen it?Tapatalk Cloud - Downlaoad File 4250.pdf

    Peter

  13. #28
    Join Date
    Jun 2017
    Location
    Squamish BC Canada
    Posts
    8

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    Hi Peter,

    Happy New Year!
    Just wondering if you have made any progress with your copying attachment and if you could post a few pics/dimensions of the center height gauge?

    Kind Regards,
    Dan


    Dan

  14. #29
    Join Date
    Jul 2014
    Location
    Alphen aan den Rijn, Netherlands
    Posts
    188

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    Quote Originally Posted by Dan@SVDF View Post
    Hi Peter,

    Happy New Year!
    Just wondering if you have made any progress with your copying attachment and if you could post a few pics/dimensions of the center height gauge?

    Kind Regards,
    Dan


    Dan
    Dan,
    Sorry for the late reply, there are all kinds of things going on in my family that keep me busy. I have not had the time to tinker with my AI grinder. As a matter of fact, I am still busy getting the new shop ready enough to move my metalworking equipment. That is taking all my time and energy. I am getting there slowly though!
    In the next few days I need to go to the place where my grinder is stored, and I will search for the centre height gauge. I will take it home and make a simple drawing and take some pictures for you.
    May take a few days though.

    Peter

  15. #30
    Join Date
    Jul 2014
    Location
    Alphen aan den Rijn, Netherlands
    Posts
    188

    Default

    Quote Originally Posted by Dan@SVDF View Post
    Hi Peter,

    Happy New Year!
    Just wondering if you have made any progress with your copying attachment and if you could post a few pics/dimensions of the center height gauge?

    Kind Regards,
    Dan


    Dan
    Hi Dan,Finally got around to picking up the centre gauge and drawing/taking pictures. Got a real bad case of the flue that kept me out of the shop
    I hope this is what you need, Let me know.
    First some pictures:
    centre gage 1.jpgcentre gage 2.jpgcentre gage 3.jpgcentre gage 4.jpgcentre gage 5.jpgcentre gage 6.jpgcentre gage 7.jpgcentre gage 8.jpg
    The drawing in PDF:
    Centre gage.pdfCentre gage.pdf
    There were two caliber plates with my gage, but I am not sure if one of them really is the original. Both are drawn on page 2 of the drawing. Height wise I think the fist (rectangular) one should be ok, from the top of my head the centre height of the grinder should be 135 mm. But I am not entirely sure of this. If anyone has some information or a picture of an original gage plate, I would like to see/hear it!

    Cheers,
    Peter

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