I am in the process of converting a normal 12V wiper motor to a servo. In fact I have ran it on a Gecko drive already. It max's out the Gecko @ 20A and 36V...
Don't forget just basic automation practice. Alot of this automatic motion could be controlled with limit switches and actuators independent of the software....
In the last few days there has been discussion about using the index pulse on an encoder "anded" with a home switch to get ultra precise home repeatability....
This is why I mentioned HPVEE software because it is made for doing exactly that...and it is a visual interface with drag & drop icons representing your...
Yes...I'd say that you were pretty well on point. On my CNC router and CNC plasma rigs, I define 0,0,0 wherever I want on the table, and reset the control...
... It depends on what accessories you have on your machine. An automatic toolchanger (mounted to the table) would require a precise home location. Also,...
... Most wiper motors reverse to park the blades. If a brush is grounded, then is reversing done by switching the field direction, or doesn't this one...
... For the Stewart platform / Hexapod I'm working with, it is important to have a precisely defined reference position, where the lengths of the legs are...
This list is for the discussion of CNC and related topics including CAD, CAM, EDM, & DRO. The list focuses on the construction of home shop CNC machines along...
CAD_CAM_EDM_DRO@yahoo...
Feb 1, 2005 7:37 pm
78579
Hello Carl, Here is one way to do it with half of a LS74 dual D flip flop, two 1 kohm resistors and a normally open limit switch. The normally open limit...
I was thinking last night...scary I know...What about a set of ignition points that are dialed in with a .001" gap? Seems that some of the switches out there...
Hi Wally; I will comment below, hopefully the material won't get lost in the clutter. ... Fortunately I'm past taking cold showers. I do believe that your ...
ditto, my experience in the starter/alternator biz says the armature will probably overheat. made for a few seconds to start and engine. also armature speeds...
One way of making a limit more precise is by using a belcrank. A short leg and a long leg pivoting where the two intersect. Table touches the short leg and...
... There's a historical reason for this. The original TTL parts were spec'd for an _absolute maximum_ voltage of 5.5V on any input pin, but would tolerate ...
hello, i am new to all of this, and i want to build my own CNC machine for making prototypes, parts and quick PCB's for my robotics projects. I have been...
Adam, Many people build similar machines out of PVC. It works like wood, can be plastic welded (cheap welder a harborfreight), is durable and is dimensionally...
I am using an Axxus parallel port breakout board with MACH2 on my CNC Bridgeport. I have just wired up a variable frequency drive. I am controlling the speed...
Andy: I figured that might be the case, but also though that that is more or less what a pulsed signal is anyway and it "should" work. Jeff ... 5V) to ... ...
This chap is selling some really nice linear stages with stepper motors for 120GBP. They have hardly been used (<3months)and include THK bearings and...
Jeff, I am sure you know this but I always have to shut down Mach2 and re-start to get it to take any spindle speed changes. Make sure nothing esle is assigned...
Hi to the group..... I need to pick your brain on this one! I would like to come up with a alternitive method of threading with a cnc lathe,,,,, not using a...
Hello Russ, I think TurboCnc can do this. I seem to recall the TurboCnc developers as talking about syncing feed to a tach pulse on the spindle. Tom Hubin ...
We thread with TurboCNC using G33 and a custom G76 routine we added to it. Both work well, but G76 is canned thus much faster to program. The spindle needs to...
Kim Lux
lux@...
Feb 2, 2005 5:55 pm
78596
I have been looking through the files and everything I can get my hands on. I would like to know what DOS based files I could learn how to make steppers run...
... Yes, but.... The problem is that there will be no precise relation between the spindle and the Z axis feed, so the thread will be an APPROXIMATION of the...
John, Is there a reason you are insistant on a DOS based program? Mach 2 is a Windows based program at a VERY reasonable price. There is a mach1mach2cnc group...
