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  1. KB P

    Walking Beam Mechanism

    I should have been more clear... I only need the walking beam in a single direction, not two sides like the first video. This simplifies it a bit. I am limited to about 2" max vertical movement because the moving beam pieces cannot recede lower than the fixed pieces due to sanitary reasons. I...
  2. KB P

    Walking Beam Mechanism

    I am working on designing a "walking beam" transport system similar to this. https://youtu.be/SNd1xAoMlZM From the sound of it, it seems this one is powered pneumatically. My application requires 15"of horizontal movement and no more than 2 inches of vertical movement. Speed is 20 inch/s. The...
  3. KB P

    Eccentric Locking Mechanism

    See basic drawing below. Basically the web path is pinched between the drive and pinch roller which causes it to be fed. I need to design a way to engage both roller aswell as disengage them easily. I found this online. Does anyone have any idea how this could work? The pinch/nip roller is...
  4. KB P

    Wheel Between Two Plates

    Weld a rod with the wheel in place between the two plates? Depending on load and other requirements you can design a feature on both sides of the plate that allows you to properly position the rod and weld it without adding any material on the sides of the plates.
  5. KB P

    Eccentric Locking Mechanism

    I am trying to design a mechanism that will lock two rollers against each other. One roller is driven by a motor and its position is fixed. The second roller is a pinch roller that needs to contact the drive roller during operation so it is driven. The pinch roller also needs to be able to be...
  6. KB P

    Rubber Roller Alternatives

    I am having issues with excessive wear on a drive roller on a labeling machine. Two pinch rollers (knurled aluminum) press lightly against it to pinch a label web between and drive it. Originally the drive roller was made of nitrile rubber. It was wearing too fast so I changed it to a higher...
  7. KB P

    Bearing Type for Rotary Application

    Mike, Unfortunately the diameter of the plate is fixed. The thickness is currently at 3/8" and I'd be concerned about a thinner plate running flat. I am going to test the system with a slewing ring. Thanks
  8. KB P

    Bearing Type for Rotary Application

    The purpose of the table is an accumulation table for small pill bottles, not high accuracy. Ideally the plate would be only supported in the center by a bearing. This shouldn't be a problem since there is hardly and overturning moment force. The table would be directly connected to a drive...
  9. KB P

    Bearing Type for Rotary Application

    I need to select a bearing type for a rotary table. The table will be an aluminum plate, 48 inch dia 75 lbs, and will need to rotate at 60rpm max. I would like the plate to be supported by just the bearing. would a slewing ring be best or can I use an angular contact bearing or even just a...
  10. KB P

    Synchronizing Shafts in Parallel

    @MintJulep I was talking about gears w/ keyway & setscrew, not timing pulleys, sorry for the confusion. @Jboggs Unfortunately I need 180º travel. I decided to go with option #2 since the load is very low. That website looks great! I see things I can use for other projects. Thanks all!
  11. KB P

    Synchronizing Shafts in Parallel

    @rb1957 I think I understand now. Thanks for your input. I think a single chain will be the best option. I'm wondering if tensioners between each of the shafts are necessary or if just a tensioning on the drive will be sufficient. @MintJulep The gears I was finding were ~$100-200 a piece. 6...
  12. KB P

    Synchronizing Shafts in Parallel

    @rb1957 The linkage that jlnsol posted had a different shaft configuration from what I am designing. Im probably not describing it correctly but see the photo I attached in my last post. By standoffs do you mean like an dead stop at east and west?
  13. KB P

    Synchronizing Shafts in Parallel

    Not sure how to reply directly to a post... @jlnsol I forgot to mention that the shafts are both parallel and laterally aligned in a row. (See attached) I think there would be a dead spot if j tried to use linkages to turn 180 degree forward and reverse. @jboggs The majority of sprockets I...
  14. KB P

    Synchronizing Shafts in Parallel

    I need to synchronize 6 parallel shafts to rotate 180 degrees forward and backward at 10x/min. The load is very low <2 lbs. I'm finding that gears are too expensive (I don't want to press fit). Pulleys connecting each shaft to the next would work but maybe there is a better way. Can this be done...

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