Search found 246 matches

by dazz
Mon 04 Jan , 2016 22:52 pm
Forum: Viceroy
Topic: Chuck & spindle nose flex?
Replies: 9
Views: 9753

Re: Chuck & spindle nose flex?

Hi The Denford is a relatively small and light lathe. Flex is normal. Too much is abnormal. I would run a few cuts on a test piece to check that you can turn a parallel bar. You have to allow for deflection in order to achieve accurate dimensions. Specifically you should aim to reach a target diamet...
by dazz
Sun 03 Jan , 2016 23:22 pm
Forum: Viceroy
Topic: Before I go and damage the spindle/spindle bearings
Replies: 10
Views: 13179

Re: Before I go and damage the spindle/spindle bearings

Hi
In the absence of any other replies, I still think my method is the best option.
If you find a better way, please let everyone know.
by dazz
Sun 03 Jan , 2016 23:10 pm
Forum: Viceroy
Topic: Surface finish when turning Mild Steel Bar.
Replies: 4
Views: 6382

Re: Surface finish when turning Mild Steel Bar.

Hi Based on similar early experiences I had, I suggest two things. 1. Buy a length of good known grade steel. 2. Run the carbide fast and deep. If it isn't scary, your not doing it right. If you look up the data sheet for the particular inserts you are using, you will find that a "fine" cut translat...
by dazz
Thu 29 Oct , 2015 21:10 pm
Forum: Viceroy
Topic: Factory Made Taper Tracer Attachment
Replies: 8
Views: 9639

Re: Factory Made Taper Tracer Attachment

Hello

Just mild steel and brass, straight out of the scrap box.
I can't look at my lathe at present, but I think you may be referring to the holes for the threading gauge.
by dazz
Sat 26 Sep , 2015 9:08 am
Forum: User Stories / Projects / Courseware
Topic: Viceroy T.D.S 1/1 G.B - All finished
Replies: 22
Views: 57380

Re: Viceroy T.D.S 1/1 G.B - All finished

Hi

Attached is an updated photo of the lathe.
It how has a:
  • shelf,
    electronic variable speed drive,
    bigger 1.2kW motor
    magnifying light,
    adjustable feet and,
    a lot more tooling
by dazz
Tue 08 Sep , 2015 21:14 pm
Forum: Viceroy
Topic: TDS metric/imperial or imperial/metric screwcutting.
Replies: 2
Views: 4523

Re: TDS metric/imperial or imperial/metric screwcutting.

Hi I have looked at this option but I found that the cost of having gears cut was eye watering. As with the casting, it would be more cost effective for a group of people to place one order for multiple gear sets. I now have a second lathe that cuts metric and imperial threads so I won't be taking a...
by dazz
Sat 08 Aug , 2015 21:41 pm
Forum: Viceroy
Topic: TDS 1/1 G.B.L. drivetrain modification
Replies: 7
Views: 9183

Re: TDS 1/1 G.B.L. drivetrain modification

Hi I have retained the factory link belt between the headstock and the lower intermediate pulley shaft. The poly vee belt goes between the motor and the intermediate shaft. There are photos already posted in the Denford forums. It would be a major job to run the poly-vee belt all the way to the head...
by dazz
Sun 02 Aug , 2015 10:21 am
Forum: Viceroy
Topic: Uploaded Drawings In one PDF file
Replies: 1
Views: 4182

Re: Uploaded Drawings In one PDF file

:D :D :D
by dazz
Tue 28 Jul , 2015 12:03 pm
Forum: Viceroy
Topic: Viceroy TDS 1/1 GB Drawing No 35
Replies: 4
Views: 6934

Re: Viceroy TDS 1/1 GB Drawing No 35

Hi
Some time ago I purchased a piece of polycarbonate sheet (shatter proof) to make a chip guard. I just haven't got around to making it yet. Too many other projects.
by dazz
Mon 27 Jul , 2015 9:30 am
Forum: Viceroy
Topic: Viceroy TDS 1/1 GB Drawing No 35
Replies: 4
Views: 6934

Re: Viceroy TDS 1/1 GB Drawing No 35

Hello
I am sure that future generations of Denford TDS owners will appreciate your efforts.
A very useful reference. Much more information that is usually available for any lathe.

I didn't know that Denford made a chip screen. One of the few Denford accessories I don't have.
by dazz
Wed 08 Jul , 2015 1:33 am
Forum: User Stories / Projects / Courseware
Topic: Poly Vee Pulley
Replies: 0
Views: 11255

Poly Vee Pulley

Hello Another small project finished. This is a poly-Vee pulley for another VFD lathe conversion and is made of mild steel. This is the forth pulley I have made so I am refining my technique with each one. I rigged up a pretend DRO to accurately space each groove. Each groove was cut by turning each...
by dazz
Sat 27 Jun , 2015 10:15 am
Forum: Viceroy
Topic: 280vs lubrication.
Replies: 3
Views: 4275

Re: 280vs lubrication.

Hello Hydraulic oil is a good choice for the gearbox. It's only available in 10litres drums here so I use non-EP gear oil. EP lubricates erode yellow metals. I am about 99% certain that gearbox does not contain any bronze. The gearbox is so lightly loaded that just about any lubricant would be OK an...
by dazz
Fri 10 Apr , 2015 10:04 am
Forum: Viceroy
Topic: 280vs 3 phase conversion
Replies: 7
Views: 8029

Re: 280vs 3 phase conversion

Hello I don't know how relevant my experience with a TDS is to the 280VS. The drive arrangement looks completely different so you will need to make your own assessment of suitable pulley ratios. The Viceroy TDS had a mechanical pump belt driven off the end of the 4-step pulley (which made it 5 step)...
by dazz
Fri 10 Apr , 2015 4:58 am
Forum: User Stories / Projects / Courseware
Topic: Denford Viceroy TDS VSD conversion
Replies: 20
Views: 55460

Re: Denford Viceroy TDS VSD conversion

Hello Here is a close up of the upper control panel. I made a cardboard mock-up to test appearance and ergonomics. The panel was mounted on a stand over the hole for lamp. All of the cabling goes down through the inside of the headstock. All of the VSD controls a fully remoted so there is no need to...
by dazz
Fri 10 Apr , 2015 4:52 am
Forum: User Stories / Projects / Courseware
Topic: Denford Viceroy TDS VSD conversion
Replies: 20
Views: 55460

Re: Denford Viceroy TDS VSD conversion

Hello

Here is a drawing of the driver and intermediate pulleys I made for the Viceroy VSD conversion.
Note that the threaded half holes for the taper lock bush are not shown.
by dazz
Fri 10 Apr , 2015 4:15 am
Forum: Viceroy
Topic: 280vs 3 phase conversion
Replies: 7
Views: 8029

Re: 280vs 3 phase conversion

Hello I settled on 75mm to 130mm for the poly-vee sheaves. The linked Vee belt drive pulley was 94mm dia. If I did it again I would go for 75mm to 150mm to give more torque. I don't believe a lathe can have too much torque. I think you will find that by the time you discard the redundant electrical ...
by dazz
Fri 10 Apr , 2015 4:02 am
Forum: User Stories / Projects / Courseware
Topic: Denford Viceroy TDS VSD conversion
Replies: 20
Views: 55460

Re: Denford Viceroy TDS VSD conversion

Hello The control panel was something I designed and made specifically for the Viceroy. I am using an ABB ACS50 drive. This is a small industrial unit, as opposed to the cheap economy (hobbyist) units. The ABB motor is also an industrial grade. Unfortunately this grade of equipment is expensive. I w...
by dazz
Thu 09 Apr , 2015 10:57 am
Forum: User Stories / Projects / Courseware
Topic: Denford Viceroy TDS VSD conversion
Replies: 20
Views: 55460

Re: Denford Viceroy TDS VSD conversion

Hello

I am converting my other lathe to VSD and have fitted a 3 phase/4kW/ 220VAC motor.
It's only taken a year so far.
There is no Nardini forum on the web so I won't be posting progress on this anywhere.

I made a poly-vee pulley on the Viceroy
by dazz
Thu 09 Apr , 2015 10:36 am
Forum: User Stories / Projects / Courseware
Topic: Retrofitting Spindle Digital RPM meter to a Viceroy lathe
Replies: 1
Views: 12508

Retrofitting Spindle Digital RPM meter to a Viceroy lathe

Hello I found a Chinese supplier of cheap digital tachometers specifically designed for machine tool applications. The trigger 1 pulse per revolution and measure the period between pulses. This means good update times even at low rpm. They are available in red and blue. I fitted a blue one to the Vi...
by dazz
Thu 09 Apr , 2015 9:51 am
Forum: Viceroy
Topic: 280vs 3 phase conversion
Replies: 7
Views: 8029

Re: 280vs 3 phase conversion

Hello I have just completed a VSD conversion on my Viceroy. Youtube: Denford Viceroy VSD Conversion These days, VSDs are cheap enough and have significant advantages that push rotary converters out of contention. If you three phase motor is dual voltage, changing the connections from Y to Delta for ...