Topics

31

General Mach Discussion / MPG want .0001 get .0004

« on: June 16, 2014, 10:30:50 PM »

hi i have been looking for info on mpg with pokeys and am lost. this is what i set up pokeys 56u rotary switches axis X,Y,Z, and A 1" .1" .01" .001" .0001" with MPG from CNC4PC. i am using the newest pokeys plug in i like it better than the old one. anyway i can jog ok with all but .0001 i get .0004 increments every click or every four clicks i have tried multiple configurations and read what i can find here has anybody had this problem and how can you solve it i want one to one i think i should be able to move in tenths the fly out screen shows this setting. also i don't want to redesign my sticker. if this cant be fixed what can be done or what are the limitations
thank you Mark

32

General Mach Discussion / cabinet design

« on: November 19, 2013, 12:00:47 AM »

hi i upgrade mills usually bridgeport bosses with good results. now the question i have is cabinet design i am currently looking at a bridgeport with a heidenhain control usually an upgrade canidate has two cabinets i use one for computer and break out board control the other cabinet power supply and servo controlers i usually have/make a third cabinet for vfd drive. most if not all wires are shielded and grounded on one side also i use .1 uf caps on all inputs. now onto the question the machine i am looking at has one very big box on the right hand side and a smaller box in the back, the big box houses the original drives and the power supply, the little box houses the oiler and mister. the heidenhain computer is housed in the arm. i have my own box i will be adding to the arm however the computer will not be housed there. i am planning to put the computer in the big box. i have the option of making a power/drive box however i am looking at a very big box on the right and i could house all but the vfd in there i would house the vfd with the oiler and mister in the small box which would leave the power computer drives and bob. what i am woried about is em interference as drives can be noisy. on the other hand what do you do to shield for instance if i built metal dividers into the cabinet would this shield the computer from the drives. so do i build a third cabinet or dividers i would like to know if anybody has done this with good or bad results any thoughts or advise would be appreciated thank you mark cook
ps the driver will be dugong or vipers

33

PoKeys / pokeys 56e need help

« on: November 25, 2011, 02:18:12 AM »

hello this is going to be a long post i may get typers cramp. anyhow i purchased a pokeys 56e downloaded microsoft .net framwork and installed everything was going well using the pokeys software communicated and tested outputs inputs ect now onto mach i installed the pokeys 56 plugin from the pokeys web site there is no documentation so i am not sure what the plug in is doing ? does it only config pins on pokeys device or does it link pokeys to mach ie ports and pins ? one thing i found out about the plug in is if you have the pokeys software running the plugin will not see the pokeys board from within mach. next i got tcp modbus working what exactly should be checked under ports and pins modbus input output support i have this checked now. modbus plugin supported i dont have this checked. tcp modbus support i have this checked. next i am able to get into setup tcp modbus and test i have the pokeys board plugged into a cnc4pc mother board with a cnc4pc m24 output board i have a bigger setup than this however i disconnected everthing else for ease of testing. now when i tested tcp modbus i was able to write 1 or 0 to pokeys and my outputs activated great i thought a little more experimentation and i would be set wrong i have not been able to get mach to talk to pokeys i did some reading and video watching tried different brains and configurations in ports and pins. so here is what i am not sure of ports and pins port 0 i supposed to be modbus i set port 0 ands just about every number i could thing to plug in to outputs and enables nothing has anybody got port 0 to work for them that is what i would really like to do. on the other hand you do what you have to so i proceded to write a few simple brains with modbus outputs this should have sent the signal to pokeys and my output board this didnt work either any help will be appreciated thank you  

34

General Mach Discussion / reset tripping randomly

« on: July 11, 2011, 07:01:39 PM »

hi
i upgraded a bridgeport boss 8 and it has a few problems first i will describe the setup then the problems.
installed 1 smooth stepper used port 3 for mpg
installed 1 cnc4pc c23 dual port board
installed 3 viper 200 drives
installed 1 2hp vfd from automation direct
installed 1 mpg2 pendant from cnc4pc
i checked and reused the orriginal drive power supply.main estop is hardware estop kills power to machine and notifies mach.
all signal wires are shielded with the shield connected only on one side.
installed capacitors .01 mfd on all inputs
modified the orriginal brains from cnc4pc to run the pendant "all i really did was remove lines that apply to other pendants as this pendant doesnt have extra switches for more axises"
machine was running
had problem with spindle forward and reverse i believe i have solved this however mach wont switch between high and low by itself i need to change to the settings page and change it manually
now i try to mill and the machine will cut a random amount and stop then reset will flash. mach doesnt have an error so i dont know what is tripping the reset. also the viper drives have led's and reset switches hooked up these are not tripped. the vfd is not tripped.
so the main question is what would cause mach 3 to trip reset randomly
thank you

35

General Mach Discussion / spindle speed m1s

« on: June 07, 2011, 10:22:48 PM »

hello i have a spindle speed problem. i set up a bridgeport with a automation direct vfd and changed out the cones for timing pulley and cogged belt this worked fine then mach said compile error in spindle speed.m1s so i replaced the file and it worked. next i read about a mach problem with spindle speed so i set pulley 1 to 510 - 4200 rpm and pulley 2 to 60 - 500 rpm ratio 3 i didnt check reverse in pulley 2 this worked so i thought i had the problem  worked arround checked numerous times ran ok. now mach has shreaded the file again. so did some more reading found the file setup in spindle speed was supposed to be set up wrong so redid file to put both command on seperate lines worked worse then before. so can sombody tell me exactly what is wrong with spindle speed and reverse, the best repair option thank you mark

36

Brains Development / Blended Feedrate

« on: May 13, 2011, 12:56:11 AM »

hello
i need help on blended feedrate 183 what is blended feedrate can sombody advise or tell me whare i can look it up
thank you
mark cook

37

General Mach Discussion / bridgeport boss 3 upgrade

« on: May 27, 2009, 09:10:46 PM »

hello i am a machine rebuilder and i have been retrofitting a boss 3 with a breakout board and mach 3. the machine is stepping well however i have been having trouble with the z axis it crashes in the upper limit i have read a few posts where they say the home switch is not used however the Bridgeport originally went up to that position then slowed down and creeped home that is what i would like to recreate i have an idea of hooking up the input and assigning it so when the input is triggered the z would slow down however i cant quite work it out if there is a post on this or you have any info i would appreciate it thank you