Re: [Emc-users] Cannibalize Industrial Robot Servo System to Retrofit Milling Machine???
At 12:13 PM 5/15/2010, you wrote: If it were my mill, I would look for some 90 (or higher) Volt DC brushed motors from a treadmill or similar. The robot motors will most likely have proprietary output shafts and drive requirements, which would be hard to deal with. A more generic motor would most likely have enough plain shaft to mount a timing belt pulley. You can fit a US Digital encoder disk and sensor to the motor shaft or preferably to the ball screw for each axis. If you get the disk and sensor separately you can save a bit of money by machining the rest of the assembly, and you can get a custom fit. Here is the test setup on my Bridgeport: http://www.wallacecompany.com/machine_shop/bridgeport/00047-1a.jpg http://www.wallacecompany.com/machine_shop/bridgeport/00046-1a.jpg http://www.wallacecompany.com/machine_shop/bridgeport/ The ball screws turned out to have a couple of thousandths of an inch slop, so I need to find another set before I continue with this project. I'll probably mount a small timing belt between the ball screw to an encoder, similar to this: http://www.wallacecompany.com/machine_shop/bridgeport/ I would keep the robot intact, run it with EMC2 as a work piece changer, tool changer and beer server. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA Kirk, Problem is, those treadmill motors are almost impossible to find anymore, unless you happen to stumble across a parking lot full of used treadmills. Surplus Center hasn't had them in stock for almost a year now. Mark -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Cannibalize Industrial Robot Servo System to Retrofit Milling Machine???
On Sun, 2010-05-16 at 07:07 -0400, Mark Wendt (Contractor) wrote: ... snip Problem is, those treadmill motors are almost impossible to find anymore, unless you happen to stumble across a parking lot full of used treadmills. Surplus Center hasn't had them in stock for almost a year now. Mark I haven't had to buy any recently, but it sure seems like they are scarce. Dumpsters and trash day cruising seem to be the best source for these now. The windmill people have driven the prices up on eBay. Some of the RC people make there own out-runner motors. Some of these motors get up to 2 kW. Shaft sensors would be needed for our application. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Cannibalize Industrial Robot Servo System to Retrofit Milling Machine???
At 10:50 AM 5/16/2010, you wrote: On Sun, 2010-05-16 at 07:07 -0400, Mark Wendt (Contractor) wrote: ... snip Problem is, those treadmill motors are almost impossible to find anymore, unless you happen to stumble across a parking lot full of used treadmills. Surplus Center hasn't had them in stock for almost a year now. Mark I haven't had to buy any recently, but it sure seems like they are scarce. Dumpsters and trash day cruising seem to be the best source for these now. The windmill people have driven the prices up on eBay. Some of the RC people make there own out-runner motors. Some of these motors get up to 2 kW. Shaft sensors would be needed for our application. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA I use two of them, one each, to power the saws on my saw beveler. I've been watching Surplus Center for a while now, waiting for them to become available again so I can pick up a couple as spares. Been looking for a long while.. Mark -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Cannibalize Industrial Robot Servo System to Retrofit Milling Machine???
I was thinking of tearing apart an old Fanuc arcmate sr with RJ control - -or whatever available bot i can get my hands on- and using the components to re-cnc the wells index 823 mill i have the mill left factory as a tape N/C deal, but at some point in its life was stripped of motors and control... leaving all motor mounts and ballscrews in place what hurdles would i encounter? would the components work for this sort of task? id like to run mach3 or emc2 into a breakout board then feed input to the robot control to run the motors while searching for motors and drives i came up with the idea of buying an industrial bot cheap and ravaging it for parts as the system would already be complete and just need reconfigured i ve contacted a number of fanuc etc robot service places but they freak out on the fone when i tell them what im interested in doing can anyone help me? -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Cannibalize Industrial Robot Servo System to Retrofit Milling Machine???
On Sat, 2010-05-15 at 07:34 -0400, mtg7...@aol.com wrote: I was thinking of tearing apart an old Fanuc arcmate sr with RJ control - -or whatever available bot i can get my hands on- and using the components to re-cnc the wells index 823 mill i have If it were my mill, I would look for some 90 (or higher) Volt DC brushed motors from a treadmill or similar. The robot motors will most likely have proprietary output shafts and drive requirements, which would be hard to deal with. A more generic motor would most likely have enough plain shaft to mount a timing belt pulley. You can fit a US Digital encoder disk and sensor to the motor shaft or preferably to the ball screw for each axis. If you get the disk and sensor separately you can save a bit of money by machining the rest of the assembly, and you can get a custom fit. Here is the test setup on my Bridgeport: http://www.wallacecompany.com/machine_shop/bridgeport/00047-1a.jpg http://www.wallacecompany.com/machine_shop/bridgeport/00046-1a.jpg http://www.wallacecompany.com/machine_shop/bridgeport/ The ball screws turned out to have a couple of thousandths of an inch slop, so I need to find another set before I continue with this project. I'll probably mount a small timing belt between the ball screw to an encoder, similar to this: http://www.wallacecompany.com/machine_shop/bridgeport/ I would keep the robot intact, run it with EMC2 as a work piece changer, tool changer and beer server. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
