Industrial Machine Help.
mikesign
Posts: 3
Anyone know if I'm in the right place?
I want to build a machine that would have a motor to drive rollers to feed light gauge aluminum in 1/2" increments stop then have a pneumatic punch to punch a hole thing move 1/2" do it again so on, back and forth.· My dream would be that I could enter a number on a key pad say 55 and press start then it would proceed to punch and move 55 times then stop, awaiting the next number to be input.
The motor would have to be very strong, would I use DC or AC?________
Does the motor have to be controlled by a relay?
Is this to complex ?· Any Help would be great.
I am really new to the parallax stamp so please use easy to understand terms.
Thank You
Mike
I want to build a machine that would have a motor to drive rollers to feed light gauge aluminum in 1/2" increments stop then have a pneumatic punch to punch a hole thing move 1/2" do it again so on, back and forth.· My dream would be that I could enter a number on a key pad say 55 and press start then it would proceed to punch and move 55 times then stop, awaiting the next number to be input.
The motor would have to be very strong, would I use DC or AC?________
Does the motor have to be controlled by a relay?
Is this to complex ?· Any Help would be great.
I am really new to the parallax stamp so please use easy to understand terms.
Thank You
Mike
423 x 268 - 19K
Comments
The mechanical part is another matter. Since your material is coming off of a roll, you will probably need a set of straightening rollers before it reaches the punch; otherwise the material will come out curved. You could use a gearmotor and pinch wheels to pull the material through the rollers and into the punch, possibly using the last hole punched, in conjunction with an optical sensor, to tell it when to stop. A more positive arrangement would use a couple powered clamps and a reciprocating piston. With such a setup, you could employ mechanical stops on the piston to set the increment distance.
Can you tell us what you're making with it? I assume it's not pipe hanger tape.
-Phil
http://www.toshiba.com/ind/product_display.jsp?id1=7&id2=401
L Sutherland
Phoenix AZ
However it is a very time consuming process by hand, with a hand notcher.
The punch will actually cut a "VVVVVVV" notch along one edge of a 5" wide material.
I am in the process of building and fabricating the mechanical side of it, that is the easy part. I have been researching the hydralic parts.· I was looking at the; Stock#:·30064··· <!-- product category -->Category:·Industrial· Stamp PLC is that what I need?·As far as the measuring·it seems like it would be easier to go to Home Depot and buy one of those measuring wheels and manually stop it when it reaches the desired length - but like I was saying a·"Dream Machine" would automatically stop.
·Would something like this work for controlling the cylinder? (Poppet Valve - Solenoid Pilot Actuated)
http://www.numatics.com/product/valves/naf.solpilot.asp
Thanks for your reply - what is the best way to get started? Order the basic learning kit, I saw a kit at radio shack called "What is a Microprosser".
Mike
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This is really an easy job.
It could be done by a Stamp based controller, or a commercial PLC.
The PLC is already geared to tackle this type of environment and PID Loop Control.
The Stamp is cheaper and more fun to do.
·Either Way:
To do this properly we will need to know the weight of the material, weigh tof the full roll, and·the speed it needs to travel.
The roll may need to have its own drive motor due to weight and feed rate.
If the pinch rollers have to feed· the punch and pull the roll, then the roll has to start and stop with each cycle.
A large roll has a large amount of Inertia to over come with every start and stop.
A solution to this is a drive motor that spins the feed roll and a Web sensor.
Have a loop between the roll and pinch rollers.
When the loop gets too small, it trips a sensor and the roll motor winds out more material.
When the loop gets big enough, another sensor turns off the roll motor stops.
This eliminates the need for a variable speed motor for the roll.
The pinch rollers could have an Encoder mounted to give a distance measurement.
I would use an AC Servo. It has a built in Encoder, lots of torque, and can be easily controolled by a Stamp.
A·proper·Emergency Stop Circuit is a must. (I'll·write about that next go around. Gotta get back to work)
Not knowing what your budget is, it is hard to go further.
Thanks,
Alan Bradford
Plasma Technologies
www.plasmatechnologies.com
at that point the rear gripper closes. Then the front gripper opens and the air shuttle moves forward until the home switch is sensed.· At that point the the punch press would be triggered and a magnetic switch would sense its down stroke and the whole cycle would repeat until the count down counter reach's 0000. At that point the output of the down counter would trigger a relay to break the latching relay , that was latched upon cycle start.
· I am now in the procces of revamping my sys. > I want to be able to set a linear dimension from a keypad through a BASIC Stamp and have a stepper or servo control the stroke of my shuttle.·Getting a motor to control linear moves to a precise dimension if beyond me at this point. Your application seems to show that your dimension of 1/2·inch does not change.··Like I said its been running for 10 years and its time to go a step further so that each time a new length is required the opperator will not have to adjust the stop on the linear air shuttle.· I would keep the down counter since it works well and would free up the stamp from having to count down to 0000.· Hope this helps and if anyone can help me that would be icing on the cake.· E. Kap