Messages

121

Show"N"Tell ( Your Machines) / Re: 1997 DYNA MYTE DM4800 VMC to Mach3 Conversion

« on: October 05, 2011, 11:02:00 AM »

You're welcome...great project!

Did a little research, its looks like the Eumach VMC Model MC800P and the LEADWELL MCV-760 are the same CORE machines.  This is good news for me.   Thanks again for the tip!

Thanks
JH

122

Show"N"Tell ( Your Machines) / Re: 1997 DYNA MYTE DM4800 VMC to Mach3 Conversion

« on: October 04, 2011, 05:36:00 PM »

Looks a sturdy machine. As far as I know these are re-badged Leadwell machines. Correct me if i'm wrong!

Looks like a hefty spindle motor.
John

Its a beast for sure...  Thanks for the info on the re-badged, didn't know this but it gives me more options for spare parts. 

Thanks
JH

123

Show"N"Tell ( Your Machines) / Tear Down and Inspect…Complete

« on: September 27, 2011, 08:52:57 AM »

We finished removing the components from electronics cabinet and the user interface control from the front.  The control stuck out about 2.5 feet and would hit the doors and windows.  The plan moving forward will be to create a new then control box that mounts to the top of the machine and hangs down, something that would not block the doors either.  Also, I do not want to run the User Interface Control wires next to the Y Axis Servo Power and Feedback.

The only thing remaining to remove is the 5 year old boy who thinks this is his new play house… 

Thanks
JH

124

Show"N"Tell ( Your Machines) / Tear Down and Inspect…Continues

« on: September 19, 2011, 01:50:34 PM »

I removed the plastic windows from of the sheet metal enclosure so they can be polished up like new.  I then welded up the section that was damaged during shipping and leveled off the enclosure. 

Removed both of the X Axis covers to inspect the ways and ball screw, overall, things look good here.  The X Axis was very stiff at first, the oil was sticky and dry.  Got things cleaned and lubed up, now it slides with ease.  The Home and Limits switch assembles are functional and reusable.

Removed all the surface rust from the face of the table and placed a heavy coat of oil on it. 

Pulled the spindle cover off for inspection of the draw bar and spindle motor.

Thanks,
JH

125

Show"N"Tell ( Your Machines) / Re: emcotronic T1 control

« on: September 16, 2011, 03:37:02 PM »

Try http://www.machmotion.com/

126

Show"N"Tell ( Your Machines) / Tear Down and Inspect

« on: September 16, 2011, 11:18:53 AM »

Pulled off the remaining sections of the Y way covers, the last owner indicated repair work on the trust bearing.  Moving things by hand, I can not feel any backlash, so I am optimistic it has been repaired.  When it’s up and running under Mach control, I’ll check it completely out.  The Y ways and ball screw look good, big and beefy too.

Pulled the cover off the ATC, it needs some lube on the ram.  24 tools will be great to have !

JH

127

Show"N"Tell ( Your Machines) / Coolant and Chip Pans, Machine Level

« on: September 16, 2011, 10:44:00 AM »

Finished up the coolant and chip pans, I added Teflon feet to the coolant pans so they can slide in and out for maintenance (shown below upside down).  Had to weld up a couple of weak spots, then degreased, sanded and painted. 

The machine IRON is now level.  I removed the doors and started to level the sheet metal enclosure.  It looks like some of the enclosure bolts have sheered off during shipment so I will have to address this. 

JH

128

Show"N"Tell ( Your Machines) / Servo Investigation

« on: September 12, 2011, 12:31:18 PM »

I would very much like to reuse the Mitsubishi AC Servos and Drivers, but the MR-S3 system uses Address and Data lines (memory mapped I/O I guess) to connect/interface to it and it performs the interpolation of for the Axis’s during movement.  Short term I’ll try to find a different but compatible AC Servo Driver that will drive the existing AC Servos.

We have been running some 3D code to make matching press plates, I’ll dig up some photos when I can on that.

JH

129

Show"N"Tell ( Your Machines) / Re: 1997 DYNA MYTE DM4800 VMC to Mach3 Conversion

« on: September 12, 2011, 10:36:18 AM »

Have you moved the Z all the way up yet? It doesn't look like you would have enough clearance above it for 20" of Z!

There is a guy on cnczone (caprirs) who used to work for Dyna Mechtronics and He seems to know alot about them.

I am guessing you have the Meldas 2 or 3 on this machine. I think all the DM4800's I have seen have had rigid tapping on them.

Nice machine and I know it will be even nicer once you are done with it!

I haven't moved the Z up yet, but my calculations indicate it should fit with about 4 inches to spare.  Thanks for the tip about the zone.  I think it will be very nice when its done too as the machine core is very solid.  The Meldas M3 is a good control, but I like the customization ease of Mach3 ... tool probe, 4th axis and being able to fit things when they break.  

I should be able to reuse the logic from the BP412 VMC Project for the Tool Changer, Tool Probe and User Interface to get this up and running.

Attached are specs that I used for the height calculations

Thanks
JH

130

Show"N"Tell ( Your Machines) / Re: 1997 DYNA MYTE DM4800 VMC to Mach3 Conversion

« on: September 09, 2011, 12:11:08 PM »

Looks like a nice sold machine, never knew Dyna Myte made big machines.
Looking forward to seeing the progress.
Hood

Hood this thing is a beast ! 

BTW: What type of PLC do you use again for your I/O ?  I am looking for a better way to control my signal to noise ratio

Thanks,
JH