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Belt Skiving Machine - Usage Advice Please

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  • Belt Skiving Machine - Usage Advice Please

    I bought a belt skiving machine a while back

    A Siegling ESM5

    As shown in the pictures here

    https://www.google.co.uk/search?q=si...h=551#imgdii=_

    I have it bolted to the bed of my southbend and it's being driven off the chuck.

    Has anyone used a similar machine ?

    I cant seem to get the hang of it, the belt gets clogged with rubber ...does one joint perfectly ...then it seems that the abrasive is worn out ..and I have to choose another position on the drum to grind from.

    I've tried it on all speeds ..different feed rates different amounts of infeed.

    Could be doing with seeing a video of someone using one ..so that i can maybe see what I'm doing wrong (I'VE SEARCHED HIGH AND LOW )
    at the moment the coupling is bust ..because excessive back torque when the drum got clogged with rubber.

    It seems that the abrasive gets worn quickly, once that happens grinding does not happen - only melting ..and it's all downhill from there on

    The first cut on a new piece of drum works well...... after doing only four ends of belts ..im going to have to re-cover the drum.

    the belt I'm using is 2 inch polyimide - backed each side with rubber.
    I'm not having any trouble with the joining gluing - vulcanising - heat process. That I seem to have mastered.

    The drum; I have now taken the abrasive off it ready for new, its down to the aluminium.
    It did have coil of emery cloth rapped around it , cricket bat/ tennis racket handle style, which was fixed on with double sided tape

    all the best.markj
    Last edited by aboard_epsilon; 08-15-2014, 08:10 AM.

  • #2
    I've re-worded it - to make more sense.

    all the best.markj

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    • #3
      Looked at what appear to be the company website, maker of synthetic conveyor and power transmission belting. I found no mention of the ESMS skiving machine anywhere. Conveyor belting is usually joined with clipper lacing. Are you sure the machine you bought was made for synthetic belting and not leather? It came with no operating information?

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      • #4
        Yes it was made for synthetic belt.
        I phoned the company up, "forbo siegling" they use them out in the field.
        no one there to give the correct advice though.

        they call it a belt grinding tool

        I put skiving down because that's the American word for what we would call scarfing

        there is mention of it

        http://www.forbo-siegling.com/pages/...nding-tool.pdf


        all the best.markj
        Last edited by aboard_epsilon; 08-14-2014, 05:52 PM.

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        • #5
          Tell me what picture to look at, busy right now. 12 years fabbing belts. Found the second link. It seems like the grinding wheel is vertical or close to it behind the clamp. see a small circle, and the clamp seems to rotate a shaft down towards it. Real pictures would help.
          Last edited by Mcostello; 08-14-2014, 10:24 PM.
          mark costello-Low speed steel

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          • #6
            Having never done any belt making but i have ground rubber pinch rolls for extruders, cooling the rubber as cold as a witches tit helps considerably, in the winter the rollers were chucked outside overnite, in warm weather a cold hose over them for half an hour, they were 8 foot long so wouldent fit in the fridge!
            Bag of ice over the bit to be ground might help, the abrasive might be too fine too, we ground the rolls with silly course wheels like 30 grit, looked like concrete not a grinding wheel!
            Mark

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            • #7
              Consider trying creep rubber blocks to renew the abrasive? works wonders at unclogging sandpaper and you get a very large block for $10~20 so chewing some off to clean your abrasives does not cost too much.
              Play Brutal Nature, Black Moons free to play highly realistic voxel sandbox game.

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              • #8
                this picture best describes how it works , imagine the motor is the south bend lathe



                there isn't any vertical element in the machine

                as you can see there is a rotating abrasive "horizontal" roller and the belt is attached to a shaped "cammed" surface that rotates through a 90 degrees quadrant, this results in the belt having a flat faced "wedge" ground into it, the furthest lever in the picture works in exactly the same way as a south bend back gear engagement cam, it moves the whole quadrant closer to the drum.



                once the two ends are skived they are joined like this
                https://www.youtube.com/watch?v=xJCz...w9K83FeWV2fllv



                all the best.markj
                Last edited by aboard_epsilon; 08-15-2014, 12:09 PM.

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                • #9
                  creep rubber ? what's that .


                  all the best.markj

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                  • #10
                    Maybe Boslab is on the right track a coarse abrasive paper like a 36 grit. Larger grains, more open, less clogging? Black_Moons had a good suggestion as well a crape rubber cleaning stick to get the loose particles off the abrasive.

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                    • #11
                      Right.
                      Is this it, known as latex rubber ?

                      http://www.ebay.co.uk/itm/Latex-Rubb...item23379772ed


                      Been all along the North Wales coast today, cant find emery type strip, at anything under 80 grit
                      I say emery ..but the stuff on the machine was paper backed.

                      I have a couple of more places to look.

                      all the best markj

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                      • #12
                        One more time: it's spelled "crepe" rubber.

                        RWO

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                        • #13
                          And pronounced "crape".

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                          • #14
                            Originally posted by aboard_epsilon View Post
                            Right.
                            Is this it, known as latex rubber ?

                            http://www.ebay.co.uk/itm/Latex-Rubb...item23379772ed

                            Been all along the North Wales coast today, cant find emery type strip, at anything under 80 grit
                            I say emery ..but the stuff on the machine was paper backed.
                            I have a couple of more places to look.
                            all the best markj
                            Not sure, never seen em called latex rubber, this is what the one I have looks like, works like a hot damn.
                            http://www.ebay.co.uk/itm/Sand-Paper...item19dad42110

                            You can see how clean its getting that belt sander in the photo.

                            soon as the belt hits it, bits get ripped off and turns into a 'goo' that is highly self adhesive and sticks to debris but does not stick to the belt at all, it literally will make sandpaper clean as new almost instantly. Can be used on sheets of sandpaper or right on belt sanders/etc. Don't need to use very much to clean the paper either.
                            Play Brutal Nature, Black Moons free to play highly realistic voxel sandbox game.

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                            • #15
                              I had a thought, i was at the local builders merchants this morning (jewsons) and remember seeing they hire floor sanders, and the big abrasive sheets for the drum sanders, assd grits but big enough to do the roller perhaps?
                              Mark

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