584,846 active members*
3,872 visitors online*
Register for free
Login
IndustryArena Forum > MetalWorking Machines > Tree > pause between feed moves
Results 1 to 5 of 5
  1. #1
    Join Date
    Jun 2006
    Posts
    247

    pause between feed moves

    I run a VMC 4024 and was wondering...
    why does it pause everytime between two feed moves?
    is it something to do with the look-ahead?
    cutter comp works fine every time I use it so I'm confyoozed

  2. #2
    Join Date
    Jun 2007
    Posts
    3757

    Question

    Are you able to select between exact position and constant velocity mode?
    Super X3. 3600rpm. Sheridan 6"x24" Lathe + more. Three ways to fix things: The right way, the other way, and maybe your way, which is possibly a faster wrong way.

  3. #3
    Join Date
    Jun 2006
    Posts
    247
    I've never seen those modes in the controller, and the programming manual doesn't contain those terms at all.
    Its Acramatic A2100

  4. #4
    Join Date
    Jun 2007
    Posts
    3757

    Cool According to RS274 document I found...

    3.5.14 Set Path Control Mode - G61, G61.1, and G64

    Program G61 to put the machining center into exact path mode, G61.1 for exact stop mode, or G64 for continuous mode. It is OK to program for the mode that is already active. See Section 2.1.2.16 for a discussion of these modes.


    2.1.2.16 Path Control Mode

    The machining center may be put into any one of three path control modes: (1) exact stop mode, (2) exact path mode, or (3) continuous mode. In exact stop mode, the machine stops briefly at the end of each programmed move. In exact path mode, the machine follows the programmed path as exactly as possible, slowing or stopping if necessary at sharp corners of the path. In continuous mode, sharp corners of the path may be rounded slightly so that the feed rate may be kept up. See Section 3.5.14 and Section 4.3.5.3
    The canonical machining functions share with the RS274 language the simplifying assumption that machine dynamics can be almost ignored. That is, in this model, acceleration and deceleration do not occur. Components of the machining center can be told to move at a specific rate, and that rate is imagined as being achieved instantaneously. Stopping is also imagined as instantaneous. This model obviously does not correspond with reality. The control modes provided here provide some compensation for this lack of consideration of dynamics.



    Link for this document may be useful.

    http://www.isd.mel.nist.gov/personne...4NGC_3TOC.html


    Mach3 also supports this.
    Super X3. 3600rpm. Sheridan 6"x24" Lathe + more. Three ways to fix things: The right way, the other way, and maybe your way, which is possibly a faster wrong way.

  5. #5
    Join Date
    Jun 2006
    Posts
    247
    Thanks Neil,
    G64 isn't used on my control, but you led me in the right direction
    my control uses G60/G61

    G60 is "Positioning Mode", or exact stop mode
    G61 is "Contouring Mode", or continuous

    now I'm cutting like I should have been all along
    no more quadrant marks!
    thanks again

Similar Threads

  1. Cycle pause in effect? What?
    By kentavv in forum Mach Software (ArtSoft software)
    Replies: 1
    Last Post: 09-05-2019, 09:57 PM
  2. Pause After Plunge
    By pzzamakr1980 in forum Mastercam
    Replies: 4
    Last Post: 08-25-2008, 01:59 AM
  3. hardeware pause pause detected?????
    By Conquest1224 in forum Commercial CNC Wood Routers
    Replies: 1
    Last Post: 05-08-2007, 04:06 AM
  4. how to programmatically pause
    By Antonio_Emilio in forum LinuxCNC (formerly EMC2)
    Replies: 2
    Last Post: 01-27-2007, 06:32 PM
  5. How to pause Turbocnc
    By jimglass in forum CNC (Mill / Lathe) Control Software (NC)
    Replies: 13
    Last Post: 03-28-2006, 12:06 AM

Posting Permissions

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