Member postings for Niels Abildgaard

The low torque/low Herz problem can be eased by upping PD009.

I tried it first with 5V and could stop the 125mm chuck with one hand when at 5 Hz.

It has been set to 22 V and I cannot stop chuck with two hands.

The translated manual uses more words than elsewhere to warn agaist being to greedy and put in a to high value here.Can someone here explain what is at take?

The combination of a HuanYang and a WM250 lathe

https://www.hbm-machines.com/producten/metaalbewerking/metaaldraaibanken/metaaldraaibankensub/hbm-250-profi-metaaldraaibank

from HBM in Holland is a winner I think

**LINK**

To make 90 Hz max I have had to program PD 072 to 180Hz.

What is the joke?

Edited By Niels Abildgaard on 17/03/2019 10:33:43

Edited By Niels Abildgaard on 17/03/2019 10:57:39

Homeground carbide in homemade holder:

Tangential Carbide

Jason,Thank You for link.

It is as I thougth but it is nice to see it clearly.

Material looks cast Iron to me and I am using mild steel,and ca 18 mm thick

I have a piece of 16MnCr5 ready.

I do not use QCTP with tool overhang either so I will make one more for a friend.

Thats an awfull nice picture of a very well engineered slide system.

Been there myself

Found this from Boxford

From Boxford Spares

It does not show the   Boxford locking screw/cone very well.Does someone have a picture of underside of compound slide base with integral cone please?

Edited By Niels Abildgaard on 11/03/2019 08:20:32

Edited By Niels Abildgaard on 11/03/2019 08:21:14

Edited By Niels Abildgaard on 11/03/2019 08:22:37

Another 55 62 engine that ran in Oldenburg

Compound locomotive from oldenburg

It was an A section Powertwist belt..

It could drill 20mm holes in mild steel from14mm.

Going from 12 to 20 was a marginal affair.

Belt tension was not high as I liked the slipping when I made something stupid.

I have stalled a 4 pole 0.75kW motor once.The white video one.

Powertwist A belts cannot go round smaller than 60mm pulleys.

Do You have a drawing of the drive system?

My Boxford back-gear system was only used for unscrewing chucks,faceplate etc.

When  starting with both backgear and direct drive engaged, belt slip was a benefit.

Edited By Niels Abildgaard on 18/02/2019 06:40:30

My former Boxford was driven with a Powertwist belt from a 60mm pulley on AC motorshaft unto the big 90 mm pulley on lathe spindle.

A 2.5kW VFD made belt changing superfluous.

Noise was next to none from 60 to 1400 rpm.

**LINK**

Best motorsize was 6 pole 1.1kW

I have had both a A model and an AUD and think the A is the one to look for.

Sooner or later You will VFD the thing and it is easier on the A where the spindle v -belt disc is bigger .More torque

For a couple of years my Boxford had a 1.1kW 6 pole and I did a lot of single point threading at three Hz and with 2 to 3 reduction.

.Motor never smelled bad.

Single point threading uses very little power.

Many modern motors have a termistor inside that can inform inverter.

Wishlist to inverter:

single 230 feed and three times 230 out 0.75kW

Act on termistor signal from motor

Act on inverter fan so that it only run when inverter is getting hot,

Understandable manual

Aproximate .5meter between inverter and buttons

Can that be had within say 150£ ?

Edited By Niels Abildgaard on 02/02/2019 13:00:48

Hello Nigel

I have given away worlds best turning Boxford to a friend ,thrown a lousy Boxford out and given two chinese lathes,WM280 and a WM210 away and mistreat a WM250 for the moment.

Next time I fall in love with another lathe I think we make swap .A Lathe for a MZ?

That dirt collection problem in ETZ frame is new to me and I sold it many years ago.

It reminds me of my four Austin Maxis that all died from rust due to dirt in the front transverse bridge.

Front wheel threw mud into a corner.

Hello Howard

All my lathes are mounted on a piece of granite or diabas(dolerit).

The black tube is a piece 600/640mm PEHD tube.

Motor makes the noise and I want 60 to 1200 rpm by turning a potentiometer anyway.

My wish for advise was between two pole and four.

I try four first.

Edited By Niels Abildgaard on 01/02/2019 16:40:59

Edited By Niels Abildgaard on 01/02/2019 16:42:31

It will be a three-phase ,four pole 0.75kW motor of noble origin(made in China most likely)

What VFD to go for?

Noise was more or less the same as in picture.Single phase motors are junk.

There is only one real MC and I am their prophet.

80000 km on two sparkplugs and still very fit when I got too old.

Son on picture sells ships diesels in North Atlantic area today..

Hello Brian .

The choice for was to buy either a two pole 0.75kW or a four-pole three-phase.

I will go to my electro pusher and buy a 0.75kW four-pole .

Noise,as You point out,depends more on rpm than load or anything else.

Thank You for guiding.

A friend changed the original S7 sinle-phase to three and VFD.

He is not going back

Somehow I cannot put text on when having linked a photo.

I need some advice.

Single phase 4 pole drive system of my WM250 lathe makes an awful noise and I want   60 to 1200 rpm spindle speed with a VFD.

I can either use a two pole motor and a 1 to 5 Poly v belt or a 1 to 2.5 SPZ belt .Both with a big disc diameter of 125mm.

What will make most noise and trouble?.

Edited By Niels Abildgaard on 01/02/2019 09:18:02

Edited By Niels Abildgaard on 01/02/2019 09:18:47

A more MC friendly version.

Two stroke exhaust is not so hot as from a fourstroke.

The piston and cylinder stays rounder than conventional two strokes.

If 1% oil mix is enough it polutes less than a B&S type SV.

Fewer parts

It hard work that someone has to do.

More engineering than modelmaking so it is OK.

Edited By Niels Abildgaard on 01/02/2019 08:35:31