Chuck guard microswitch

[Martyn DuncumbParticipant @martynduncumb88863]

This may have been asked before but I cannot find anything on it. I have a Sieg 7 x 16 mini lathe and want to use my faceplate and MT collets. However, They cannot be used as I cannot close the chuck guard and thus activate the microswitch on the guard.

How does one get round this to use the faceplate. The collets are too deep behind the guard for the toolpost to get near them.

Any help would be appreciated.

Thanks

Martyn

[Martyn DuncumbParticipant @martynduncumb88863]

[Ian S CParticipant @iansc]

I would disconnect the micro switch on the chuck guard and join the two wires, your not in a factory, there are plenty of lathes out there (mine included) that have no micro switches, including ones in industrial use.

Ian S C

[pgk pgkParticipant @pgkpgk17461]

It depends n how the switch is operated. On my (larger) lathe the chuck guard spindle when closed releases the switch such that removal of that spindle with the guard allows te lathe to run as it would with guard closed. It makes it easy to have the guard operational for times when it doesn't get in the way.

You may find that there is a simple way of opening (or closing) your switch with, say, a false guard spindle or false skinny latch somewhere.

[JasonBModerator @jasonb]

The shaft that the guard is on usually activtes the switch as it is closed, you should be able to unscrew the perspex guard from the shaft and then just rotate the shaft into the closed position to activate the switch. That is how I have done it on my larger lathe

[Martyn DuncumbParticipant @martynduncumb88863]

Many thanks for your help and I understand now how it works. I will have another look to see whether I can bypass activation of the switch on my machine.

Martyn

[HOWARDTParticipant @howardt]

Remove the guard from the switch, two screws on mine, then put the switch arm into the guard closed position.

[Bill PudneyParticipant @billpudney37759]

I have a Sieg C3 lathe. I did what Jason B suggested, until the headstock was in bits to replace the spindle bearings, when the microswitch and associated wiring was removed. A wire link had to be introduced on the circuit board once the factory fitted bits were removed.

Best of luck!!

cheers

Bill

[Bob StevensonParticipant @bobstevenson13909]

When I took delivery of my Chinese mini-lathe (Chester Conquest) the first thing I did was to remove the chuck 'guard', which was just as well for safety reasons as it was wired around the spindle and had already started wearing thru the insulation and was well on the way to having a chuck directly connected to the mains!!

[JAParticipant @ja]

I have started to work, volunteering, at my old place of work in the historical archives and workshop. In the workshop, along side a large Dean Smith & Grace lathe, is a Myford S7. This poor little lathe is festooned with interlocks. Every guard, and there are quite a few on a Myford, has its own dedicated switch. When I first saw it I could only laugh. There is nothing on the big lathe.

Mind you I would not feel happy with any of the workshop volunteers using either lathe.

As for my Myford, and my milling machine, there are no interlocks and the guards are somewhere, not seen for quite a few years (and I have never left the key in a chuck).

JA

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