Automated Door

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dstryr

Diamond

Joined

Jan 22, 2010

Location

Nampa Idaho

• Sep 30, 2014

• #1

Has anyone here done a simple auto-door conversion for their CNC?
Looking into what you did and how well it worked. Both automation company and machine tool MFG want to sell me a $7k auto door. I'm thinking this could be done for under $1000 and use the extra money towards more pallets for the automation system.

I'm thinking either Air cylinder with some sort of "cushion" at the end of the stroke or a small motor to drive the door open and closed.
Looking for help!

Edit: Door stroke is 36 inches.

 

M

Miguels244

Diamond

Joined

Mar 27, 2011

Location

Denver, CO USA

• Sep 30, 2014

• #2

Get a rodless air cylinder with cushions.
I would use the magnetic drive like the FESTO DGO series...no contamination issues and easy to integrate.

You are own for safety and integration with your controls.

 

D

dstryr

Diamond

Joined

Jan 22, 2010

Location

Nampa Idaho

• Sep 30, 2014

• #3

I'm going to leave the existing door interlock in place. The cylinder will just moove the door open and closed. Going to use an m-code to fire it. The automation system is just an Erowa robot so safety should be fine. Its not like a fanuc or kawasaki robot where it can move wherever and hurt someone. Its fully enclosed and just moves in 1 direction...towards the machine.

 

M

Mr.M

Cast Iron

Joined

Sep 28, 2012

Location

MN, USA

• Sep 30, 2014

• #4

I would make sure you have a prox switch set up to confirm that the door is 100% open so the Erowa loader doesn't proceed it the door for some reason failed to open all the way.

 

D

dstryr

Diamond

Joined

Jan 22, 2010

Location

Nampa Idaho

• Sep 30, 2014

• #5

Mr.M said:

I would make sure you have a prox switch set up to confirm that the door is 100% open so the Erowa loader doesn't proceed it the door for some reason failed to open all the way.

Click to expand...

The cylinder Miguels recommended has the switches.
https://www.festo.com/net/SupportPortal/Files/43090/DGO-.pdf

I feel like a noob lol. I can do 5 axis shit but automation/building onto the machine scares the shit out of me for some reason.

Just for simplicity I'll prob just make it controllable on the factory unlock button. Just have the cylinder open and control the door all the time instead of having the option to do it manually.

 

M

Miguels244

Diamond

Joined

Mar 27, 2011

Location

Denver, CO USA

• Sep 30, 2014

• #6

As a matter of reference, use open center valves so it cna be moved by hand when the air is off.
Also, the FESTO will be working when roaches rule the earth and is a more compact solution, but other people make a similar solution if your needs don't merit the price adder for badassness.

 

D

dstryr

Diamond

Joined

Jan 22, 2010

Location

Nampa Idaho

• Sep 30, 2014

• #7

Miguels244 said:

As a matter of reference, use open center valves so it cna be moved by hand when the air is off.
Also, the FESTO will be working when roaches rule the earth and is a more compact solution, but other people make a similar solution if your needs don't merit the price adder for badassness.

Click to expand...

Ballpark on that unit?

 

M

Miguels244

Diamond

Joined

Mar 27, 2011

Location

Denver, CO USA

• Sep 30, 2014

• #8

dstryr said:

Ballpark on that unit?

Click to expand...

You can get a solid price from the FESTO site...and even order it...$500-$1000 is my bet.
Call them up and you can get the valves speced as well.
Like most FESTO stuff it's available in inch or metric.

 

Ox

Diamond

Joined

Aug 27, 2002

Location

Northwest Ohio

• Sep 30, 2014

• #9

The M code would need to be in the robot eh?
If you are leaving the interlock intact - I doubt that your machine will start in AUTO mode with the door open, so no way to fire the M code on it;s own control.


--------------------

Think Snow Eh!
Ox

 

D

dstryr

Diamond

Joined

Jan 22, 2010

Location

Nampa Idaho

• Sep 30, 2014

• #10

Ox said:

The M code would need to be in the robot eh?
If you are leaving the interlock intact - I doubt that your machine will start in AUTO mode with the door open, so no way to fire the M code on it;s own control.


--------------------

Think Snow Eh!
Ox

Click to expand...

Door open button will feed the cylinder.
Then the robot needs to signal to close the door .

Thats what I'm thinking atleast?

 

D

dcook1987

Aluminum

Joined

Jul 24, 2013

Location

Boston, MA

• Nov 11, 2014

• #11

What about having the robot open/close the door? Just a thought..

 

T

Tonytn36

Diamond

Joined

Dec 23, 2007

Location

Southeastern US

• Nov 13, 2014

• #12

dcook1987 said:

What about having the robot open/close the door? Just a thought..

Click to expand...

Cycle time. You want as little time as possible between M30 and Cycle Start.

 

Dave K2

Stainless

Joined

Apr 18, 2007

Location

Hertfordshire, England

• Nov 14, 2014

• #13

The cylinder I would use for this is called a Sine cylinder, it has built in acceleration and deceleration at each end and gives very smooth control of moving objects. I use SMC stuff but I guess others have too.