The amount of play you have is not the same as how much you need to increase the ball size. You are fitting the balls in a V but really its more like exponential curve. Some times a small change in...
Type: Posts; User: arizonavideo
The amount of play you have is not the same as how much you need to increase the ball size. You are fitting the balls in a V but really its more like exponential curve. Some times a small change in...
Thanks ;)
I gave you the refund not paypal. I have only had 2 refunds in the past year. PayPal would never tell you that my account "might" get pulled. I have used them for 15 years and have few complaints...
I don't think the 940 is sold in a China clone. The 12Z or the old Industrial hobbies is. It is a 1000 pound mill but has the slow gear head. 10.5" of Y but you can get 12".
No CNC kits are out...
Hi guys I know this is not the correct place to put this thread but I dont see another place here to do it.
I make a good amount of aluminum parts that I sell and want to farm out some of the...
Buy some AC bearing they are about $7 each. You might need more shims. Set them tight so you can not feel any play in the bearings and it will only spin 2 turns or so by hand if you remove the...
That might be the nicest machine work I have seen here.
Great video.
The PM-30 has Tapered Roller bearing stock. They are a strong bearing but will make a lot of heat at higher speed. Most all the bench top run them.
Breaking takes a long time lets say 20 hours. If...
On a 5 TPI ball screw and a 200 count stepper motor with direct drive I think that is .001" per step.
I would say your not loosing steps.
Not only that but if your loosing steps they will add...
Sell the belt drive for almost full list. It is a demand item and is light to ship. Ebay it.
Put the mill back to stock and sell the rest for $ 100 to $200 non working. I know everyone is saying...
Nema 23 for the X-Y is fine. With CP you don't really save any money with the 23. The small Nema 34 are OK too and they will stick out less.
Nema 23
...
If you guys want I can just make a few mounts and screws up for the 728.
I dont think much will fit from the 30 or 727. If they used RF-45 mounts then some of the PM-25 will fit.
The Y is the...
Looks like a nice changer. Lots of peole woud like plans and the macro. Are you running Mach3 or4?
A used RF-31 might be found for around 500 not a bad mill.
That is fine.
If your ball screw nut has slop you will be able to move the screws around. If its tight it will have almost no movement. Having a bearing on that end wont change the backlash or...
You need to close the splash gard...:banana:
For the PM-25 a 640 oz 6A Nema 34 is already over kill.
A 1600 is crazy.
Total over kill size would be a 900 oz. The Z runs fine with a Nema 23 570 oz.
I did the sliced nut trick once too. Back whenI used the Roton ball screws with single nuts, it was quite hard to get no backlash with the screws being all over the place in diameter.
I sliced a...
The table change was years ago.
I still do the kits for the PM-25. Feel free to PM me or email me at [email protected].
The new website is almost done.
Thanks
Dave
I have both the DMM and closed loop and regular steppers. The closed loop are a nice product. Get the 2.2Nm for the X and Y and the 4Nm for the Z.
The DMM are faster and quieter but the closed...
A simple way is just to look at the amps draw.
If you have a 425oz and it runs 3A it is high inductance and will be weak at high speeds unless you hit it with 80V.
If your Nema 23 is 5A then it...
The PM-30 is just large enough for 56C size motor.
A 2HP with a larger pulley can get you 6 or 8K with good power. The 30 is not that large so 6K with a 1/2 cutter is about right.
You would...
I had a round column.
I really liked the motor and the high speed was nice and the longer 5" quill was nice. It still flexed a lot more than the PM-30 I have. Really the 30 size mills will do...
Glad its working out.
Did you do the spindle bearing?
Do you mean the PM-30 mill ?
I looked up the cx601 and it is a Weiss 30 mill. The older ones had a two speed gear box and a brushed DC motor and the listings says the Cx601 has two speds with a...
Nice job. it does sound the motor is giving max power. I dont know how it will do like that.
If the mill is new then .0012" is fairly good.
Backlash comes from all the components not just the ball nuts. On of the leading caused in a new mill is stick slip and way friction. After the ways...
A few things.
The 20mm rails are fine but the carts might need over sized balls to be tight.
I just re did a few 16mm rails and it really worked well. I think they run the same size balls so if...
I really liked the sound of the cuts.
In the end you can tell how the mill is going to perform by the sound. Most hobby mills are light and have a higher ring to the sound. The buzz from yours has...
Looking rather nice.
Is the head two pieces for tramming?