Phenolic :question:
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Phenolic :question:
Hey thanks Phill, you would have thought it would be much more common wouldnt you, it looks like this is just the sort of forum it would get used and spoken alot.Quote:
Originally Posted by phill05
Im determined to find a supply of it, as i think it is something i know i will use in the future. the panel im designing is 16.5" x 7.5" but i suspect i will have to buy a bigger sheet so i will have to find some more projects to use it on:naughty:
Again thanks Phill
Rick
Hey phill, shall I change it in your quote in My post as well??lol
Hey Rick,
looked back in my records and found ref: to Pantograph supplies, changed name now but you will find all kinds of sheet here tell you now will be expensive.
http://www.pantograph.co.uk/pdfs/materials.pdf
Phill
Hey Phill, that is magic, to be honest its not much more than normal perspex, i will have a read through that and get some ordered monday, that will get another job out of the way, the next thing will be to sort out the engraving.Quote:
Originally Posted by phill05
Thanks Phill
Rick
Phenolic is the American name for Tufnol, it's not a two part material.
.
this place used to be local to me, and they just call it engraving laminates.
http://www.westwardplastics.co.uk/s_abet.php
Cheers i2i, Ill give them a call monday, see if they do smaller pieces..Quote:
Originally Posted by i2i
It was called Phenolic board a three part white-black-white and black-white-black 20 plus years ago and was purchased in the UK I still have small stock and paperwork for it.Quote:
Originally Posted by John S
Phill
The earliest form of the phenolic was bakelite,just an old material brought back to life with a new material added.
Ok the first draft of the control panel is ready, its not to scale, its more of a concept rather than a tue representation, and i expect i will have more controls to add and possibly some taken away.
Attachment 2579
Hey i know why dont you use this as a template and show me your ideas, I may even nick 1 of them lol
Rick
I've got this sneaky feeling Rick,that you like twiddling with knobs?:eek:
Well maybe, but when windows is asleep I want to be able to use the machine you see.....:) (I prefer to say switches lol)Quote:
Originally Posted by GeorgeD
That is a nice panel design and If where to use it I'd take it to a CNC shop and get it etched out in an 2mm aluminium panel..
Bearing in mind I'd have to do the andodising process to get it black first.
Thank you, I may even do that, although Ill have to find a cnc shop first.Quote:
Originally Posted by GeorgeD
I saw the link and i may even have a go at that.... as it will come in usefull for the m'cycle parts...Quote:
Originally Posted by GeorgeD
Nice panel layout, but I think there are some things to consider...Quote:
Originally Posted by Ricardoco
Q1 Are these illuminated switches? If not, consider using illuminated ones inatead of LED repeaters, saves real estate and assembly effort and looks neater
Q2 How are these going to drive the mill when Mach3 is switched off?
Q3 As it stands I reckon you need 11 inputs to mach 3, you have 10 on 2 parallel ports...
Q4 Whats 'Feed' for?
Q5 If the small round circles are LEDs how will they be driven for the mains circuits e.g. computer and monitor power (and do you really need those anyway?)
Mainly because ive got the LED's and the nice chrome holders on the shelf, and ive also got the switches, (shown in previos post) and to be honest ive seen and used many broken illuminated switches but never the solid top ones.Quote:
Originally Posted by irving2008
At first most of the switches will just address MACH, but when thats up and running, I will use this (already purchased.)Quote:
Originally Posted by irving2008
Attachment 2580
Not all the buttons will be connected to MACH, IE none of the spindle motor speed controls and most of the others are power switches anyhow.Quote:
Originally Posted by irving2008
If i am to have successful manual control i will need to have a feed rate controlQuote:
Originally Posted by irving2008
I have these on the shelf too :)Quote:
Originally Posted by irving2008
Attachment 2581
I am as always open to suggestions from people who have experience using a mill both manualy and by CNC so if you see anything you think i have missed or messed up then pipe up because I will just as likely forget..
Having looked at the panel the only wsitches that will address MACH are 2*X, 2*Y, 2*Z, 2*A & E-Stop. that makes 9 I think lol
Thanks
Rick
OKQuote:
Originally Posted by Ricardoco
What board is that (& chip) ?Quote:
Originally Posted by Ricardoco
Ummm, OK, but hows that going to work - which axis does it apply to?Quote:
Originally Posted by Ricardoco
Home and/or limit switches...?Quote:
Originally Posted by Ricardoco
What board is that (& chip) ?
fleabay item number 250576566482
Ummm, OK, but hows that going to work - which axis does it apply to?
Home and/or limit switches
This is why I think this forum is tops...there is always too many trees...you cant see all the wood, its so helpfull to have someone who can look and see the obvios.
Ok to incorperate the extra inputs you have highlighted i will have to rework the axis control, maybe an axis selector button and a plus minus button..
Thanks Irving.
Oh yes I know, I thought I was going nuts then irving...
Here is the secret weapon..the contour shuttle. driver exists for mach :)
Attachment 2582
On the shelf ready to be took to pieces :naughty::twisted:
Rick :smile:
Revised panel layout. (Thanks for pointing the errors out Irving)
Attachment 2583
Is this whats called, evolution...
No No its vorsprung dork technique
Rick
Interesting... but its not clear if the kit is just the PCB or all the necessary parts less PIC.... calls itself a kit, but for £6.99 I'd imagine its just the PCB... personally I use a plugboard for prototyping and for that price I'd use a bit of stripboard, since there's no real simplification of wiring. I have a PCB design I am working on that provides headers for standard display and multiplexed keypad/switch bank, with or without telltale LEDs, 8 relay drivers (and standard i/o routines to drive it all) as i seem to keep reinventing that wheel...Quote:
Originally Posted by Ricardoco
Quote:
Originally Posted by irving2008
Its a kit of parts minus the 40pin chip, so they said in the e-mail. so not too bad..
Hey that wheel needs re-inventing, but just not by me, you are much more qualified to do that....
and Hey Ive got the dollar if you've got the kit!!!
Rick
lolQuote:
Originally Posted by Ricardoco
Why not use the one jog wheel for all up/down inc spindle speed?
How will you change jog rate?
You seem to have lost your 'feed' requirement. I'd use the one display to show spindle speed, axis steps and/or step rate, and selected feed speed
BTW, in case you hadn't picked up on it, the e-stop to MACH3 is just a repeater input to tell it e-stop has been activated, the e-stop itself should release a main contactor and kill all motion not relying on software.... this is normally a self latching relay
Using the contour shuttle express i have 5 buttons and a fast jog and slow jog available so the feed is not off the table just not on the layout yet..Quote:
Originally Posted by irving2008
My mental capacity is less than yours so, i only suggest things that i have some chance of achieving, you have no idea how helpfull you have been already..
Rick...or is it Fick... lol
I did look at the wiring suggestions in the mach manual some time ago, but as of begining this project i hadnt given it much thought, i just knew there had to be one.Quote:
Originally Posted by irving2008
That reminded me about inputs, so ive just had a look at the plugins page on the artsoft site and they have some neat gadgets on there, that will give you all the inputs you've ever needed not to mention outputs, Pokeys, and the TC-Emulator Board to name just two.... so if we get stuck there is light at the end of the tunnel, mind you maybe someone else has more knowlege of these gadgets and would care to enlighten us of their experiences.
Rick
Irving, if you wanted just the blank pcb it is here under fleabay Item number:250625826321 (Good price)Quote:
Originally Posted by irving2008
Rick
Started to get the basic wiring done.
First job was to identify the step and direction pins on the SD3 Drives using the SD3 manual. Once that had been done I fitted the transistors and resistors which addressed the fact that the SD3 drives use 12v logic and I will be using a 5v logic system.
With those two things completed, ive mounted the boards i have so far.
Attachment 2584
Ive begun to wire things in..
With the help of a post by Irving I was able to wire things to the default settings in MACH.
Attachment 2585.............Attachment 2588
Stepper axis wiring completed!
Attachment 2587
Motor speed interface to be wired between Lenze 534 and BOB
Attachment 2586
Motor speed interface has its own power supply (0-27vdc LM317T based board)
** remember not to wire the output up to anything untill you have set the voltage.**
Onward..
Rick
Whilst reading the Lenze 534 manual ive come across another requirement....
If a reverse motor direction is required a simple polarity change is required using one of the contactors, however the motor motion must stop before the reverse direction is activated, I will need to incorperate a timer to allow for the motor to come to a standstill before the reverse is activated, I can tune the time once I know how long that takes, I could also introduce electrodynamic braking to reduce the changeover time, I will have to investigate all that before I complete a reverse control but that will be a secondary to getting it moving in a forward direction first...
Rick
Don't bother,
Use a M04 P 2.0 command in your speed change code inside Mach after the M05 or M01 commands.
this will stop the motor, wait two seconds then carry on with the code.
It can be hard coded into the post processor so it's there but out of mind.
Also pays to use the same command after the M03 start up to give the motor chance to spool up before any cutting takes place.
Ahh yes but that wont help when im not using MachQuote:
Originally Posted by John S
but thanks for the post processor hint, done and forgotten is what i like :)
Other than CNC controlled tapping, why would you want to change spindle direction? My mill's cutter always rotates in the same direction, there is no reversing facility as standard, probably becuase every cutter I have ever seen (and I know thats not many) cuts in the sme direction. Granted I will be able to reverse the motor from the (yet to be fitted) VFD, but I feel there is an inherent risk in being able to reverse the spindle direction without some interlock.Quote:
Originally Posted by Ricardoco
Quote:
Originally Posted by irving2008
As i said the reverse will be a secondary consideration, and an interlock as you state would be the safe way to go, but i Will be considering it, as it is something that the original control panel had.
When I got the machine the computer side of things had a few problems. To be able to fire up the machine and test ALL.. the functions was what sold it to me, I liked the fact i could just get it home and start milling. Without some sort of manual control I would have been taking a real big chance with quite a lot of money im sure you will agree.. and although I suspect as you have suggested this may be a function that i will not often use, the fact that the Z axis can be tilted through 90deg means I am more likely to use that function with the head tilted.
The real fact of the matter is that I wish to retain all of the functionality of the original machine so it is something I have to consider, and may be of use to someone else, should I ever sell the machine (not likely, but still), not to mention the fact that other people reading this thread may find the reverse interlock system usefull.
Rick
Hi Rick
Only just seen this and dont know if your still looking but the plastic your after is also used for scratch plates on guitars etc. Search "3 ply scratch plate"
or look here http://www.tonetechluthiersupplies.c...-products.html
Jackpot!!! £30 spent Ross you are a star... and im sure i will use them again as there are some good bits on there..Quote:
Originally Posted by Ross77
Thanks
Rick
Ok Im now waiting for the postman again, Ive spent the rent and purchased a few bits Ahhhhemmm well although they are not all for this project they are all things I wanted to buy and I suppose they are related and could be used for this project if required..
The List...
3 x 460mm X 300mm Three layer (black-white-black) Sheet
Pokeys55t Keyboard Emulator/Simulator.
20x4 LCD display module HD44780 Blue LED Backlight *UK
CONNECTOR, 20 Way IDC Socket...Lot of 5
CONNECTOR, 34 Way IDC Socket...Lot of 5
34 Way IDC Right Angle latched Box Header PCB x10
20Way IDC Straight latched Box Header Connector PCB x10
100 x 330 Ohm 0.25w Carbon Resistors 1/4w Resistor 330R
100 x 4k7 Ohm 0.25w Carbon Resistors 1/4w Resistor 4k7R
Brand New 555 Astable Timer Project Kit IN UK
RKP18Relay8 8 x Kam Ling SPDT Relay PCB for PIC® MCU
RK L298 H-Bridge PCB for DC Motor Control with L298 IC
RKPT40 Project Kit for PIC® Micrcontrollers Self Build
RKP40C Compact Project Self Build Kit for PIC MCUs
top853 USB universal programmer EPROM MCU GAL PIC
10nF 0.01uF Ceramic Capacitors Pack of 50____cc10n
10 x 2N3904 NPN Transistor
Step Cone Drill Bit Hole Cutter 4-12mm 4-20mm & 4-32mm
6 x FINDER 2 Pole CO 10A Din Mount Mini Power Relay 24VAC
5 x Microchip PIC16F877A 16F877 + Free HOLDER
5 x Vero style stripboard strip board 72 x 47mm 371Hole
Slotted Opto Switch H22A1 Qty. 2 NOS
74HC390 Integrated Circuit x 5 pieces
DIGITAL RED LED PANEL FREQUENCY SPEED METER TACHOMETER
Phew
I so hate waiting
Grrrrrr
Just my luck all the bits not specifically for this project will turn up first...
Update as and when the stuff arrives
Rick
You're like me Rick,I like collectin stuff as well. lol
Well you got to buy when you got the money cos its hard when you aint!! its stuff i know I will use, and the missus has trouble spending resistors lol
Rick
i was going to mention "Rapid" for the electronic bits, but i see you've already spent.:smile: