Messages

131

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

« on: September 09, 2011, 10:36:32 AM »

There are 4 parts to the coolant system, 2 chip pans and 2 coolant pans.  The coolant pans sit on the floor and contain the coolant while the chip pans have casters and roll in and out from under the VMC. 

Overall the chip pans were in good shape.  The caster needed to be replaced and the dents were hammered out, then degreased, sanded and ready for paint.
 
I am starting here first so we can get the heights of all this figured out before we level out the machine IRON and the sheet metal enclosure.

JH

132

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

« on: September 08, 2011, 11:52:50 AM »

We just picked up this 1997 DM4800.  All the parts are present however the machine does not fully function.  Tool changer has issues and Y thrusts bearing was worked on before we got it.  The way covers have been removed where the work to Y Axis was performed and there is surface rust everywhere.  Not to sure DYNA MYTE machines, however it has large boxed ways, monster ball screws, 32 x 20 x 20 travel, 24 ATC and weighs in at 11,400 lbs!

Going through the electronics now to see what I can reuse and what I need to replace. 

Currently we are working on the coolant tanks and chip pans, adding new casters and Teflon sliders to ease moving them around.  Checking for leaks and repairing as needed.

JH

133

Show"N"Tell ( Your Machines) / Re: Diy Laser cutter MK1

« on: May 12, 2011, 05:10:08 PM »

ROCK N ROLL !!  Looks great !

JH

134

Show"N"Tell ( Your Machines) / Re: 1980 Mori Seiki SL1 CNC Lathe to Mach3 Conversion

« on: April 19, 2011, 04:03:02 PM »

and a couple more ...

JH

135

Show"N"Tell ( Your Machines) / Re: 1980 Mori Seiki SL1 CNC Lathe to Mach3 Conversion

« on: April 19, 2011, 04:02:16 PM »

Here are some pics of the tear down....

136

Show"N"Tell ( Your Machines) / Re: 1980 Mori Seiki SL1 CNC Lathe to Mach3 Conversion

« on: April 19, 2011, 03:50:47 PM »

Well….  I messed up.  My spindle is the CDMR-MR 7.5K not the CIMR-MT 7.5K, this means its not an AC Motor, it’s a monster DC motor.  This changes my entire plan, so for now, I will just break down the machine to the components that I plan on keeping for now….

137

Show"N"Tell ( Your Machines) / Spindle Driver VFD

« on: April 15, 2011, 02:47:10 PM »

I was able to find the Yaskawa AC Spindle Drive Documentation / Specs for the CIMR-MT7.5K.  The thing with most of these Spindle Drives are that they are 3 phase ( or are they…. )   The only thing that is 3 phase is the 6 diode bridge rectifier that converts the AC into DC for the internals of the unit to then recreate the 3 Phase AC for motor with adjustable frequency to control the speed.  If you connect single phase to the rectifier, then you are only using 4 of the diodes to generate the internal DC, this means you can use single phase on the AC Spindle Drive.  (this is my theory, I have not tried it)

My plan is to remove it and replace it with a NEW Drive that supports ModBus for the control and interface to Mach3

138

Show"N"Tell ( Your Machines) / Re: 1980 Mori Seiki SL1 CNC Lathe to Mach3 Conversion

« on: April 14, 2011, 06:09:38 PM »

drives would be +-10volts analogue so you would need a $1000.00 motion board

you can use YAPSC for this purpose. Cheap and reliable

Dear JH
is it possible ask about price for lathe ?
Approximate price What is it?

Amir

Not sure about YAPSC Products....  My guess its like a Pixie P100

The lathe as is cost $2500 USD, plus shipping and Mach3 Mods ...

JH

139

Show"N"Tell ( Your Machines) / Servo Motor Research

« on: April 13, 2011, 12:01:10 PM »

The internet is great!!  I was able to find the Yaskawa documentation for the X and Z Servo Motors and Optical Encoders.  The good news is these are simple DC Servo Motors rated at mild 400W Continuous and 2000W Peak.  Even better is optical encoders are old school digital quadrature with 500 p/rev.  (looking at the datasheet, I am not sure if this means 500cpr / 2000ppr or 125cpr / 500ppr, I am hoping for 500cpr / 2000ppr)  The output voltage is a collector pulled up to 12volts, so I should be able to convert this to TTL levels.  (not bad for 1979)

In theory, I should be able to drive these stock servos and stock encoders with a simple gecko, viper or CNCDrive

Attached are the datasheets for Servos and Encoders

140

Show"N"Tell ( Your Machines) / Re: Diy Laser cutter MK1

« on: April 09, 2011, 04:59:06 PM »

Thats look great !  What material are you cutting ?