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RE: [mach1mach2cnc] limit switches

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  • Bob
    Dave, Thanks, There sure is a lot of information on the videos. Bob Campbell From: mach1mach2cnc@yahoogroups.com [mailto:mach1mach2cnc@yahoogroups.com] On
    Message 1 of 94 , Sep 22, 2013
      Dave,



      Thanks, There sure is a lot of information on the videos.



      Bob Campbell



      From: mach1mach2cnc@yahoogroups.com [mailto:mach1mach2cnc@yahoogroups.com]
      On Behalf Of qconvers@...
      Sent: Sunday, September 22, 2013 11:08 AM
      To: mach1mach2cnc@yahoogroups.com
      Subject: Re: [mach1mach2cnc] limit switches








      Hi Bob,



      I've always found mounting switches the biggest chore after building a
      machine. I've been meaning to make an adjustable one for my Z axis for a
      long time now... to allow for different tool lengths.



      Touch wood, I've never had a machine go AWOL in a downwards movement yet.



      Regards Dave





      In a message dated 22/09/2013 16:39:01 GMT Daylight Time,
      bob@... writes:






      Dave,



      Thanks, I will look at the links. I assembled a CNC router kit from PBC
      Linear for a friend. We have all of it working. Now, we are in the process
      of adding the limit switches. I may try to use inductive proximity sensors
      if I can find a place to mount them. My breakout board supports inductive
      proximity sensors. I like them as they are non-contact.



      Bob Campbell



      From: mach1mach2cnc@yahoogroups.com [mailto:mach1mach2cnc@yahoogroups.com]
      On Behalf Of qconvers@...
      Sent: Sunday, September 22, 2013 5:33 AM
      To: mach1mach2cnc@yahoogroups.com
      Subject: Re: [mach1mach2cnc] limit switches







      Hello Bob,



      I'm looking too.



      Ebay has a lot of these..




      http://www.ebay.co.uk/itm/ME-8108-Momentary-Rotary-Adjustable-Roller-Lever-L
      imit-Switch-/190847294822?pt=UK_BOI_Electrical_Components_Supplies_ET
      <http://www.ebay.co.uk/itm/ME-8108-Momentary-Rotary-Adjustable-Roller-Lever-
      Limit-Switch-/190847294822?pt=UK_BOI_Electrical_Components_Supplies_ET&am%20
      p;hash=item2c6f629d66#ht_4195wt_721> &hash=item2c6f629d66#ht_4195wt_721







      But I can't help but think they are copies of a more expensive one...





      http://www.ebay.co.uk/itm/ROLLER-ARM-LIMIT-SWITCH-EUROPEAN-STANDARD-MICROSWI
      TCH-POSITION-J10511-/261272987856?pt=UK_BOI_Electrical_Components_Supplies_E
      T
      <http://www.ebay.co.uk/itm/ROLLER-ARM-LIMIT-SWITCH-EUROPEAN-STANDARD-MICROSW
      ITCH-POSITION-J10511-/261272987856?pt=UK_BOI_Electrical_Components_Supplies_
      ET&hash=item3cd51568d0#ht_774wt_758> &hash=item3cd51568d0#ht_774wt_758





      Or are you debating between mechanical, magnetic, optical etc? Since I got
      my optically isolated BOB, my common little black, run of the mill ones are
      behaving themselves.



      http://www.ebay.co.uk/itm/6-Limit-Switches-Wire-Terminals-HeatShrink-free-po
      st-/261114316509?pt=UK_BOI_Electrical_Components_Supplies_ET
      <http://www.ebay.co.uk/itm/6-Limit-Switches-Wire-Terminals-HeatShrink-free-p
      ost-/261114316509?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item3ccba
      046dd#ht_921wt_958> &hash=item3ccba046dd#ht_921wt_958



      < /div>





      Regards Dave





      In a message dated 21/09/2013 20:55:34 GMT Daylight Time,
      bob@... writes:





      Guys,



      I am looking for a link for some good limit switches to use with Mach3.



      Bob Campbell
















      [Non-text portions of this message have been removed]
    • Andy Wander
      Hiya Jeff: The “++” is for a switch at the positive limit position, and the “- -“ is for a switch at the negative limit position, for each axis. The
      Message 94 of 94 , Dec 30, 2016

        Hiya Jeff:

         

        The “++” is for a switch at the positive limit position, and the “- -“ is for a switch at the negative limit position, for each axis.

         

        The Home switch is for use in homing the machine; that is, setting an absolute machine coordinate system.

         

        Mach can be set up to allow the use of one of the limit switches for an axis, as a home switch for that same axis.

         

        Note also that you don’t need to install both ++ and – limit switches on an axis. For instance, my mill’s quill has a ++ limit switch, but no - - limit switch.

         

         

        Andy Wander

        From: mach1mach2cnc@yahoogroups.com [mailto:mach1mach2cnc@yahoogroups.com]
        Sent: Friday, December 30, 2016 5:48 PM
        To: yahoogroups
        Subject: [mach1mach2cnc] limit switches

         

         

        Hello.

         

        I have been using the soft limits for a while and want to use actual limit switches.

         

        I see there is Axis ++, Axis --, and Axis Home.

         

        What are these used for, and which is best to be used as limit switches??

         

         

        Thanks

        Jeff

         

         

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