Member postings for Robert Butler

Thank you Brian.

I have DRO mounted and the cross slide has the scale fitted on the underside so very crowded. I know I can count down on the DRO but would prefer a posative stop in order that I can observe the machining process.

The great pity of it is the small diameter of the headstock mandrel, the cut off slide would solve all the problems and reduce waste.

Robert

Gentlemen

A brain picking exercise. I have to make approximately 100 identical components. I have a form tool to create the external profile and have arranged the tooling for the tailstock turret to machine the internal features. Regrettably the material diameter is too large to pass through the headstock and prevents the use off my cut off slide as I will be chasing the material toward the headstock repositioning the cross slide and tailstock each time.

I therefore need to create a positive stop for the cross slide to ensure consistent daimeter. I have a copy of the design published in MEW (a reprint from ME?) but this will not work due to the need to reposition the stop after each component with resultant lack of repeatability without resetting..

Has anyone of the learned Forum members solved this problem and prepared to share any information please.

Thank you all in anticipation.

Robert Butler

spelling

Edited By Robert Butler on 24/04/2023 17:25:13

Edited By Robert Butler on 24/04/2023 17:28:00

Who on earth would suggest making a screwdriver from mild steel and then case harden it?

Robert Butler

Adequate suggestions have been forthcoming, your call. You must remember to lock the saddle if using the top slide as proposed. Dowels wear as do their respective holes therefore of dubious benefit, not to mention increased production costs.

Robert Butler

No!

Robert Butler

As MT0 is too small and MT1 is too large consider Brown & Sharpe 3 or 4 or Jarno 3 all of which are sized between the MT tapers?

Robert Butler

The holes can be welded and the table refaced.

Robert Butler

Try UK Home Interiors

Robert Butler

Edited By Robert Butler on 23/02/2023 21:05:43

Neil it is possible to purchase coving without the 90 degree angle. It is flat on the inside and moulded on the customer facing side the two edges butting up to the ceiling. Google is your friend, but i can't work out how to paste the link.PM me if you wish.

Robert Butler

If in doubt Google "Chester 16Vs Milling Machine Handbook"

Possibly see above.

Robert Butler

Try A series tappet adjusting screws

Robert Butler

R8 - MT2 adaptor and tooling where M10 or 3/8 Whitworth drawbars may also be needed. I have made and used both on my R8 machine.

Robert Butler

MT tooling may require a metric or imperial drawbar, I certainly would not wish to tilt the head to swap over as realignment is a time consuring pain.

Robert Butler

With most stand mounted machines (or in deed bench mounted) you will run out of headroom for the draw bar.

Robert Butler

The Arc attachment 2MT & 3MT? works well. Tooling needs to be designed incorporating its own stop.

Robert Butler

Litigious society would be more accurate.

Robert Butler

It also solves the problem where there are no spanner flats on the tooling and no spindle lock.

Robert Butler

I use a "windy" spanner to losen the drawbar which also frees the taper. Make sure there is something to catch the tooling before it hits the table!!!!! AMHIK.

Robert Butler

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This saddle stop shown is of the type that attaches to the saddle and the bed just under the headstock utilising existing tappings and available from new Myford. The original Myford device fits to the rear of the bed using pre tapped holes for this purpose and for the Myford taper turning attachment. The Hemmingway device fits to the front of the bed.

Robert Butler