The following warnings occurred:
Warning [2] count(): Parameter must be an array or an object that implements Countable - Line: 864 - File: showthread.php PHP 7.4.33 (FreeBSD)
File Line Function
/showthread.php 864 errorHandler->error




Screw cutting issues
#1
I have a Churchill redman cub Mark 3a

Screw cutting shaft occasionally stops when cutting threads.

I initially thought half nuts might be badly worn, but stripped all that down, cleaned inspected and put back together, no real wear on half nuts.

There is a connector between gearbox and shaft, which turns by hand. I think it may be a clutch type mechanism, there is a hole where it looks like either a grub screw or a pin might go there (i can see no evidence of either)

It surfaces and slide cuts fine (but thats from the other shaft of course)



Anyone able to shed any light on this issue?

Thanks in anticipation
Churchill Cub Lathe Mk3a, Dore Westbury Mk1 Mill
Recently retired, new to machining and having loads of fun


Reply
Thanks given by:


Messages In This Thread
Screw cutting issues - by Lockwood1956 - 01-19-2023, 09:38 AM
RE: Screw cutting issues - by Lockwood1956 - 01-19-2023, 09:48 AM
RE: Screw cutting issues - by Vinny - 01-19-2023, 10:58 AM
RE: Screw cutting issues - by Lockwood1956 - 01-19-2023, 01:27 PM
RE: Screw cutting issues - by Lockwood1956 - 01-20-2023, 10:37 AM



Users browsing this thread: 1 Guest(s)