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Zam,

When fault finding with my mill I did play around with acceleration but it had no impact on my results. As it's changing your results I would look at your drive train i.e. motor torque and...

Hi,

Traced the problem down to having too high a kernel speed I adjusted speed down to 25000hz in Mach and everything is running fine

Regards

Dale

Hi,

My problem is with lost steps, I have converted a denford cnc mill using gecko's
g251x and c11 BOB from CNC4pc. This machine has the old type round stepper
motors. I have eliminated...

Hi, I've been following this post for a year now whilst I've been trying to build my rotary axis. I 1st convert a manual rotary table with a worm gear just basically added a stepper motor, but it had...

Hi Doorknob,

I connected the PULS- and DIR- terminals of the driver to the GND terminals of the C10 and the motor now spins.

Many thanks for your help much appreciated

Kind regards

Dale

Ok, will give that a try tomorrow

Many thanks

Regards

Dale

Hi,

Do you currently have the PULS- and DIR- terminals of your driver connected to the C10's ground terminals?

I have nothing connected to either of minus terminals. just the Step output from...

Hi, thanks for the replies

Al I have checked the volts to the BOB and it's 5v

Doorknob i for got to mention what BOB I'm using its a c10 for cnc4pc I've uploaded the PDF. I'll follow your...

Hi, I've bought one of these Chinese stepper motor drives to run my rotary axis, I just asking if i have everything wired properly. I 've upload the PDF and Jpeg. I've checked I'm getting a signal...

Thanks Marcus,

But i think I truly smoked it, I connected the power supply the wrong way round when doing my trials.

Thanks for the good customer service.

Regards

Dale gribble

Sorted the problem I didn't have the phase's right on my motor cables. Best way I've found is an ohms check. Looks like I smoked one of my G251 in the process. good job I alway's wire one drive at a...

Hi, I have a Denford mill I'm upgrading, I've just added three G251 drives and there seems to be a lot of noise as the motor is jumping around, moving in both directions and then it will move off in...

Hi, I'm have to re-design my rotary axis, need to change it from worm gear to a toothed belt drive and add taper roller bearing all round. Then I'll give the shape I've created in inventor a try.
...

Hi neilw20,

Thanks for the reply. I figured it out, it was a setting in Mach on the port and pins setting where the second PP was set to use pins 2-9 as inputs.

Kind regards

Dale gribble

Hi, I've just wired my newly built rotary axis, I'm using a c10 BOB from cnc4pc and a gecko g251 connecting to a nema 23 stepper motor. this is connected to a second parallel port. I've uploaded a...

Thanks Steve,

My rotary table does come with a worm drive but I discounted it due to it having large backlash, but I can see these have a lot of advantages like no brake and simple design build,...

Thanks Gerry for your reply, what I failed to mention was that, I will be cutting large parts 6" to 8" diameter. Like other hobby builders I'm looking for ball park figures. As i will be cutting...

I'm in the process of Building a rotary axis, so my thinking is to use a large stepper motor nema 34. I'm thinking of driving the motor via a 10 micro stepping Gecko as I've had good results on my...

I managed to work out a method in inventor see uploaded pics. 1st pic is of the construction which is a copy of the wiki diagram, to create the epicycloidal curve i used a 3 point curve. I not 100%...

Hi, I slowly building a 4th axis for my router and one of the item's I'm looking to make is a roots blower. My problem is that i don't no how to draw epicycloidal curves in autocad or inventor. I...

Thanks Bob, thats the exact forum I was looking for.

Regards

Dale dribble

Thanks Matt for the link, but I'm looking for a dual purpose rotary and spindle unit.

Regards

Dale gribble

Hi,

I did see on a forum somebody designed a rotary axis which could also be run as a spindle for turning. this was all done on a gantry router. I have searched for many many hours but can't find...

Hi, Phife

I have the exact same fault, I was about to report it to the forum myself, I've learned to just initial zero command once per session of loading Mach. If I need to run the command again...

Hi, sorted the problem.

I checked out the cam ware by mirroring a square and g code was fine. it then occurred to check the squareness of gantry, it was out. the error was adjustment of one of my...

Paul,

The code works by, 1st the tool moves to wards the touch plate @ a fast feed rate, then backs off a small amount, then touches with a slow feed rate. Then the tool backs off an amount thats...

Hi,

Good idea, I'll try that.

Regards

Dale

Hi,

Just an update on using my coupling for a few months, so far I'm very happy with them. no visible twisting motion. I don't see a need to change to design as these are working very nicely
...

Hi,

Just an update on where am at with feed-rates. After many tool trials I've found that when contouring 12000 rpm @ 5000mm/m and depth of cut 1.5mm and pocketing is @ 4000mm/m. the limiting...

Hi, DP

I've programmed both images to cut clockwise / climb mill, and yes you are right they are two different images and will have different cutting forces in various places. It's not clear as...