¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
  1. Unimat
  2. Messages
Single Messages Topics Expanded Polls

Re: Unimat 3 / PC Cross Slide Backlash from HANDLEWHEEL

 

Yeah that completely makes sense, I have a Taig CNC machine that uses the same technology as a Unimat, and I program the backlash compensation into it.? When it reads the code it compensates for backlash due to its design. ? ?

What were the part numbers of the thrust washers that you settled on ??

I wound up settling on about .0035 backlash on the Y(cross slide) and .0025 on the X.?

However in my case I am convinced that the backlash on the cross slide is in the Cross slide itself and not the handle. ? ?

I¡¯m not sure buying another used one would make it any better, I might buy another ¡°new old stock¡± if I can find it. ?

On Thu, Apr 6, 2023 at 10:18 AM phill05 via <phill05=[email protected]> wrote:
On Thu, Apr 6, 2023 at 02:37 PM, Quinn Golden wrote:
you always back off a couple of turns on the handle and then go forward to remove the backlash and make your cut.
This is what I was taught to do and have done on all my larger lathes, but on the small SL it was a problem that needed more looking at if I was to use power on the screws, my first thought was I could not get the backlash down to an acceptable level because the cast was a little rough and the aluminium hand wheel was dragging and wearing off creating more backlash, I could have turned some hard plastic washers but having used very small bearings in other work I opted to use the small thrust bearings and I found I could get a really good feel turning by hand and under power it works so well for me.
With a wipe of grease on assembly these fit well, feel well and one less thing to worry about when machining.

??


Phill
--
Quinn Golden
603-491-1451
Join [email protected] to automatically receive all group messages.