584,808 active members*
4,997 visitors online*
Register for free
Login
Results 1 to 5 of 5
  1. #1
    Join Date
    Jul 2012
    Posts
    55

    Tangential knife - ultrasonic - oscillating

    Hello!

    I've got some request to cuts fabric, leather and linoleum and I'm in the process of making a tangential knife for this application.

    I've got a 130x260 cnc router with a vacuum bed so fixing the material should not be a problem.

    I started with a simple dragknife but was not satisfied. After reading the Eding CNC manual I had a tangential knife output to point the knife in the right direction with a steppermotor in under a hour and this is much cleaner way of cutting materials.

    I've got all the hardware (stepper, knifeholder, some bearings etc) but I was thinking to upgrade the system with a oscillating movement or maybe even a ultrasonic movement.

    https://www.youtube.com/watch?v=2T3bFvSPJS4

    In this video you see a ultrasonic knife.

    I don't have a ultrasonic cleaner but let's say I remove the piezo element and attached it to a blade and find the right frequency for cutting. Would it be that simple?

    I can't find real information on the internet but when I do find it I will post it in this topic.

  2. #2
    Join Date
    Jun 2014
    Posts
    777

    Re: Tangential knife - ultrasonic - oscillating

    Interesting, but why not just use an ultrasonic oscillator, probably around the same price at about £7 each.

  3. #3
    Join Date
    Jul 2012
    Posts
    55

    Re: Tangential knife - ultrasonic - oscillating

    Hello Jon,

    Thanks for the replay, are ultrasonic oscillators not exactly the same as the units used in the cleaners? I would probably search for a kit with driver an oscillator.

    My biggest problem is (I think) the connection between the ultrasonic oscillator and the knife. It seems to be quite difficult to get the vibration right where it is needed. How would you connect the ultrasonic oscillator, between the rotating axis and the knife?

    Sadly there is not much information to find about this subject or i'm searching with the wrong keywords.

    Another option is this:
    https://www.youtube.com/watch?v=8pD1H2rKJ1w

    Just a jigsaw system, seems to work great. I've found information that the average is 3000 cycles per minute. You could do this with a small motor with a offset axis like a smal vibrating sander but I would like a pre build unit so that don't need to reinvent the wheel. Something like a solenoid system?

  4. #4
    Join Date
    Mar 2019
    Posts
    5

    Re: Tangential knife - ultrasonic - oscillating

    Sorry for digging out an old post, but I am interested in this too - any luck?

  5. #5
    Join Date
    Jun 2011
    Posts
    692

    Re: Tangential knife - ultrasonic - oscillating

    This Old Tony did a couple videos on ultrasonic cleaner/cutters recently.
    https://www.youtube.com/watch?v=pFeek0a8s7Q
    https://www.youtube.com/watch?v=FA46h7Db1BY

Similar Threads

  1. Rotary milling or oscillating tangential knife for cutting Styrofoam?
    By marbles in forum Material Machining Solutions
    Replies: 0
    Last Post: 08-25-2015, 04:36 PM
  2. oscillating tangential knife
    By viscoelastic in forum DIY CNC Router Table Machines
    Replies: 10
    Last Post: 06-01-2013, 12:16 AM
  3. CNC conversion to tangential/oscillating knife
    By wb_dylan in forum DIY CNC Router Table Machines
    Replies: 4
    Last Post: 06-07-2012, 06:45 PM
  4. ultrasonic knife design
    By JNFSWE in forum Mechanical Calculations/Engineering Design
    Replies: 1
    Last Post: 01-31-2009, 01:10 AM
  5. to control tangential cutter w/oscillating
    By avengine in forum Machines running Mach Software
    Replies: 0
    Last Post: 04-20-2006, 04:23 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •