Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: Pico on October 06, 2009, 05:39:17 PM

Title: tool change problem - what have I missed?
Post by: Pico on October 06, 2009, 05:39:17 PM

This is the first time I've tried to change tools and it's not working out well. I have measured the difference between T1 and T2, which is -0.0475" and entered that in G55. I ran T1, manually change to T2, which cuts above where it's supposed to about .05". I have homed both T1 and T2 to G54 G0 X0 Y0 Z0 and G55 Go X0 Y0 Z0 and they both go to the exact same spot. Would someone straighten me out on this?    Thanks,   Pico

Title: Re: tool change problem - what have I missed?
Post by: HimyKabibble on October 06, 2009, 07:48:41 PM

First, if you're trying to use tool length offsets, you need to enter the tool lengths into the tool table - simply zeroing the tool does not do this.  You can manually enter the tool offsets by entering data directly into the table at Config->ToolTable.  Once that's done, you have to apply the offsets, using G43.  So, if your tool 2 is 1" longer than your Tool1, enter 0 for the tool 1 length, and 1" for the tool 2 length in the tool table.  When you do a toolchange, use "M6 Tn G43 Hn" where n is the tool number.  This will both do the toolchange, and apply the correct offset.  You can set the Z axis fixture offset by loading any tool, applying its correct length offset with G43, then moving Z to the zero position, and zeroing the Z DRO.

Regards,
Ray L.

Title: Re: tool change problem - what have I missed?
Post by: Pico on October 06, 2009, 08:00:32 PM

Ray,     Thanks for the reply, I'll try that tomorrow.        Pico

Title: Re: tool change problem - what have I missed?
Post by: Pico on October 07, 2009, 03:49:50 PM

Tried it - that works! Thanks,    Pico