• Welcome to engineeringclicks.com
  • About Resistance Butt Welding Machine Design.(I need your help)

    Discussion in 'The main mechanical design forum' started by yazanselman, Mar 25, 2014.

    1. yazanselman

      yazanselman Member

      Joined:
      Mar 2014
      Posts:
      8
      Likes Received:
      0
      Hello everyone.

      I'm from Turkey and studying Mechanical Enginner.My proffesor gave me a project.If i design that machine i can finish my university :).This machine is Resistance Butt Welding Machine.In my city one company has that machine.And my proffesor want me design it.I visited the company 4-5 times.But nobody couldn't help me.I called the producer of that machine and also they didn't answer me.I took some pictures of this machine.If anybody have any idea if you share with me i'll happy.Here is the picture of machine.

      [​IMG]

      Thank You.I'm waiting for ur messages.By the way i have detailed picturesof this machine.
       
    2.  
    3. PierArg

      PierArg Well-Known Member

      Joined:
      Mar 2013
      Posts:
      100
      Likes Received:
      0
      You have written a long post but you haven't specified what you really want. :D

      So, what's your problem?
       
    4. yazanselman

      yazanselman Member

      Joined:
      Mar 2014
      Posts:
      8
      Likes Received:
      0
      Yeah ur right :).My problem is i don't know enough information about this machine.I wanna learn every parts how to works.So i can explain to my proffesor.For example this picture belongs that machine i don't know what is it for?I have to slove this machine part part.

      [​IMG]
       
    5. yazanselman

      yazanselman Member

      Joined:
      Mar 2014
      Posts:
      8
      Likes Received:
      0
      it's an hydraulic system right?[h=1][/h]
       
    6. Lochnagar

      Lochnagar Well-Known Member

      Joined:
      Feb 2011
      Posts:
      157
      Likes Received:
      0
      Looking at the second picture you have posted - I would agree it is a hydraulic system. I can see:-

      a) an electric motor, bell housing and pump - middle left
      b) gas accumulators - middle bottom
      c) solenoid valves - top right
      d) oil tank - middle bottom
      e) electric junction box - middle top

      It might be worth you having a look at the video below on the basics of resistance welding.

      https://www.youtube.com/watch?v=66-RK0DPXfU

      Hope this is of some help.
       
    7. yazanselman

      yazanselman Member

      Joined:
      Mar 2014
      Posts:
      8
      Likes Received:
      0
      Thank you so much for your valuable informations.

      At firstly i want to be sure about system you told me.So i wrote these on the picture.
      [​IMG]

      Also i checked the video.Actually I know basics about resistance welding.But the machine has a lot of systems like hydraulic and electric.I didn't get any education about its.Now checking the source about hydraulic systems in my own language :)

      By the way i wanna make this thread live.I hope there is someone who knows Butt Resistance Welding.

      Thanks a lot.
       
    8. Lochnagar

      Lochnagar Well-Known Member

      Joined:
      Feb 2011
      Posts:
      157
      Likes Received:
      0
      Just one small thing - where you have written "pump" on the picture - is actually the electric motor. The hydraulic pump is mounted onto the electric motor (blue part with cooling fins)- via the bell housing (silver part) - and you can see the pump behind that - at the back of the picture.

      For an application like this - the hydraulic pump will possibly be something like a Rexroth A10VSO - see the link to the pdf below. The electric motor has the cooling fins on it.

      The A10VSO pump - has a variety of controllers available - and the one that is commonly used is the DR controller - which is a pressure controller. Basically, the electric motor runs at synchronous speed - typically 1450rpm on a 50Hz supply - and usually you want to keep a constant pressure in the system - and that is where the DR controller comes into play.

      The A10VSO pump - is a piston pump - which has a variable swash plate. The DR controller moves this swash plate from the mid-position - where there is no flow - to say 5 degrees off the mid position - to allow flow - and to try and maintain the pressure in the system.

      If you have a look at the video below - it will give you an idea of how it works.The blue fluid - is the suction - and the red is the pressure.


      https://www.youtube.com/watch?v=an1HA73Daio


      http://www.boschrexroth.com/modules...A2C17E435A894D6237F&sch=M&id=10240,20,1162026

      Hope this helps once again.
       
    9. PierArg

      PierArg Well-Known Member

      Joined:
      Mar 2013
      Posts:
      100
      Likes Received:
      0
      Hi to all,
      sorry for my temporary absence :rolleyes:

      As Lochnagar has already replied, the hydraulic circuit moves a hydraulic cylinder that pushes the workpieces one against the other.

      Your system should be something like this:
      http://wiki.iricen.gov.in/doku/lib/...t_welding&media=welding_process_schematic.jpg


      For small systems with reduced power is used a pneumatic circuit

      Could you post other photos or the manufacturer website?
       
      Last edited: Mar 26, 2014
    10. yazanselman

      yazanselman Member

      Joined:
      Mar 2014
      Posts:
      8
      Likes Received:
      0
      Lochnagar Thank you so much for detailed informations.I'm feeling like solving a puzzle :).I checked the basic hydraulic systems whole day.Now i'm trying to figured out electric system.

      PierArg Thanks to you also.You guys helped me so much.I upload the pictures on web if you want you can check link at below.Also webside of manufacturer.

      Pictures:
      http://imgur.com/a/0aYCI#0

      Webside: http://www.coskunozmakina.com/default_tr.asp
       
    11. PierArg

      PierArg Well-Known Member

      Joined:
      Mar 2013
      Posts:
      100
      Likes Received:
      0
      I had quick sight to the photos.

      Here there is the hydraulic cylinder
      http://imgur.com/a/0aYCI#12

      You can see two red cables, one for the flow that moves the piston forward and the other for the return movement.
      Between the pump and the cylinder there is a flow divider or a proportional valve electrically controlled (if I'll find it in your photos I'll post it...I need to look them carefully).
      The flow divider distributes the flow in one of the two cables depending to the cylinder versus.
      I have no idea if you have ever seen a cylinder or if you know how it works.

      About the electrical system is a very hard stuff....I'm a donkey in electrical circuit:D
       
      Last edited: Mar 28, 2014

    Share This Page