Warco Lathe Imperial Conversion
Model Engineers' Workshop|August 2017

John Pace cuts imperial gears on a metric lathe.

Warco Lathe Imperial Conversion

When I bought my Warco lathe the only real thing I disliked was the machine was metric, as all of my other machines are imperial it was something that I had to live with. It has never been much of a problem as all the machines that I have are fitted with digital readouts so converting from one system to another is only a push of a button. When it comes to making something like a leadscrew the machine has similar problems to most other machines in that the conversion is near but not perfect. I have to say this Warco machine is able to make a 10 tpi leadscrew about 10 inches long with slightly less than 0.002 inch error.

This Warco machine has a system of change wheels and feed gearbox to be able to make a fair range of metric and imperial threads and dp and module worms. Some time ago the machine was converted to part cnc operation and was seen in an article in MEW 207 to 212.The addition of the cnc system has increased capability of the machine for most machining operations and has increased the ability of the machine to be able to machine threads and worms by milling. The electronic connection between two axis means that compromises and errors can be eliminated that exist between the spindle and leadscrew by a purely mechanical connection.

A time arrived where I needed to be able to make a 1/10 inch pitch leadscrew with as little error as possible. The usual route for this has a 127 gear in the train between the spindle and the leadscrew. I have such a set for my Myford . This 0.8 module set was made for me by Richard Bartlett.

The 0.8 module gears can be fitted within the standard gear change cover, the 127/60 pair used in conjunction with the standard change wheels allow a full range of error free metric threads.

More of a problem than I thought.

Denne historien er fra August 2017-utgaven av Model Engineers' Workshop.

Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.

Denne historien er fra August 2017-utgaven av Model Engineers' Workshop.

Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.

FLERE HISTORIER FRA MODEL ENGINEERS' WORKSHOPSe alt
Readers' Workshops - Patrick Cubbon
Model Engineers' Workshop

Readers' Workshops - Patrick Cubbon

Patrick Cubbon describes his workshops – a portable one from 1963 and the current accommodation

time-read
2 mins  |
May 2020
Desktop Gear Hobbing
Model Engineers' Workshop

Desktop Gear Hobbing

Toby Kinsey has designed this fascinating piece of gearmaking equipment

time-read
9 mins  |
May 2020
The John Stevenson Trophy 2020
Model Engineers' Workshop

The John Stevenson Trophy 2020

Many readers and forum members will remember John Stevenson, a contributor to MEW but best known for his larger-than life presence on the Model Engineer forum.

time-read
3 mins  |
May 2020
From the Archives: Twist drill Sharpening by the Four Facet Method
Model Engineers' Workshop

From the Archives: Twist drill Sharpening by the Four Facet Method

Giles Parkes, MEW Issue 64, February/March 2000

time-read
4 mins  |
May 2020
Dividing on the Warco 220 Lathe
Model Engineers' Workshop

Dividing on the Warco 220 Lathe

Peter Shaw describes a mandrel dividing attachment for this popular lathe that can be adapted to fit many other benchtop machines

time-read
8 mins  |
May 2020
Choosing Steels
Model Engineers' Workshop

Choosing Steels

Stub Mandrel offers some advice on choosing the right steel for the job

time-read
7 mins  |
May 2020
A Storage Story
Model Engineers' Workshop

A Storage Story

Robin King shares the lessons learned from his experience of workshop moves

time-read
8 mins  |
May 2020
A Simple Drill Grinding Aid
Model Engineers' Workshop

A Simple Drill Grinding Aid

A newcomer to our hobby was having trouble sharpening drills, so Howard Lewis made a simple aid for him

time-read
2 mins  |
May 2020
Yet Another Bodge-Up!
Model Engineers' Workshop

Yet Another Bodge-Up!

Peter Shaw finds a use for some aged homebrew slot drills.

time-read
5 mins  |
March 2020
Workshop Press Tooling Part 2
Model Engineers' Workshop

Workshop Press Tooling Part 2

Will Doggett makes a set of tooling for his press tool described starting in issue 285

time-read
5 mins  |
March 2020