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Member postings for Niels Abildgaard

Here is a list of all the postings Niels Abildgaard has made in our forums. Click on a thread name to jump to the thread.

Thread: Is this cheap type of VFD worth buying?
18/06/2019 19:19:36

Feeding an old motor from a new inverter can give an awfull smell.

I tried it two times before buying a new motor.

Smellfree

Thread: Metric threading on Imp Lathe
15/06/2019 17:43:18
Posted by JasonB on 15/06/2019 13:19:02:

You won't get an exact 1.5mm pitch using a 63T in the train but the resulting 1.477mm should do for most things.

80 divided by 63 makes 1,26984 that is very close to the magic 127/100.

Pitch will be1,4998mm not 1,477 me think

Another almost but not cigar combination is 47 divided by 37 that gives 1,2702 or again an error of less than hobby measurable

Thread: conversion on Myford 254
06/06/2019 06:19:20

There is a manual here from february 2018 translated from german.

ELS

The newest is only in German but pictures needs no words

Thread: Boxford AUD needing a new Motor
30/05/2019 11:30:15

An WM250 has replaced an old Boxford.

Drivetrain is a HuanYang one to three phase 220V ca 50£

Taperlock pulley ca 20£

Powertwist belt ca 20£

1,1kW fourpole three phase motor ca 100 £.

An older Youtube before powertwist.

https://www.youtube.com/watch?v=_HVDuj1GSwk&list=UUl1kMtx8XGqBr2dNLXEGBPw

WM250 plus Huanyang

Edited By Niels Abildgaard on 30/05/2019 11:32:39

Thread: Lathe improvements?
23/05/2019 19:43:53
Posted by clogs on 23/05/2019 19:24:41:

nowt wrong with clockwork.....

damm electric will be the death of all or at least electronics will....hahaha...

Niels, nice work, oh, to have a shop that clean......mmmmmm

hahaha......

 

It is a  living room for a widower.

Only assembly of parts that are  machined in the entry room uniting outher world ,toilet and kitchen.

Clean floor-tiles and 22 degree year round from green district heating (they claim)

Edited By Niels Abildgaard on 23/05/2019 19:45:35

Edited By Niels Abildgaard on 23/05/2019 19:50:13

23/05/2019 18:42:39

The new spindle is in and turns freely.

Spindle OK and revolvingpg

Two  new 50 and 100 teeth gears, that can go instead of present 40 on spindle and 80 on leadscrew, has arrived and are nice.

Gear type selection

I would have preferred new gears in Delrin from You_ Engraving (Ebay) but I have lost his address and Ebay is not very helpfull establishing direct contact.

It has  sent me thinking and the other possibillity is to have synchro belt from spindle to a lower idler that also has the existing 40 gear wheel and then makes further changes unnessecary.

Gear selection

Advice sougth please because there is a small devil that tells me to put electric leadscrew on instead of all this medival clockwork technology .

Electric leadscrew

 

Edited By Niels Abildgaard on 23/05/2019 18:51:48

Edited By Niels Abildgaard on 23/05/2019 18:53:20

16/05/2019 15:21:49

Have turned a new spindle partly and wait for parts.

One more bearing 32908 62 40 15 mm and a 50 and a 100 teeth wheels from

Cheap gears

The original spindle gear is 40 teeth module one and leadscrew 80 teeth.

 

 

Waiting for parts

Big Bore Weiss Machinery 180

Edited By Niels Abildgaard on 16/05/2019 15:22:52

Edited By Niels Abildgaard on 16/05/2019 15:24:11

 

WM180 assembly

Edited By Niels Abildgaard on 16/05/2019 15:39:38

Thread: Chinese Lathes
09/05/2019 16:42:03

Fat finger help

My two inexpensive Chinese lathes have been excellent for their price, although I'm only making clocks....If the Chinese makers and their importers are watching this thread then can I make a plea that they think about the difference in size between Chinese and European fingers!.......Changing chucks (on the small lathes) spoils an otherwise happy day due to getting your fingers onto the bastard nuts without dropping them down the back of the machine, or worse..... I know that the bolted chuck methd is cheap to make and safe etc but it would not be too difficult to design the tin around the headstocks to allow finger space.

 

 

 

 

 

 

 

My first operation on a Weiss Machinery 250 lathe was to turn 4 mm away on the backside of flange.

I have a very precise and invaluable MC3 testbar and the misserable deed made no difference before or after .

Runout on far end less or equal to 0.005mm.

Chuck changing is less than 150 seconds

 

 

End of Warranty

wp_20190509_001[1].jpg

Edited By Niels Abildgaard on 09/05/2019 16:53:57

I also did it on a 210 size that I threw out

Fat finger help

Edited By Niels Abildgaard on 09/05/2019 16:58:56

Edited By Niels Abildgaard on 09/05/2019 16:59:49

Edited By Niels Abildgaard on 09/05/2019 17:01:26

Edited By Niels Abildgaard on 09/05/2019 17:02:39

Thread: Running M type motor underneath and what do I actually have?.
22/04/2019 21:12:11

If space is a consideration ,putting motor on top is working quite well.

Boxford VFD

RockFord

Edited By Niels Abildgaard on 22/04/2019 21:17:11

Thread: Lathe improvements?
19/04/2019 05:41:52
Posted by Neil Wyatt on 18/04/2019 19:32:37:

Look on the bright side Niels, you have no shortage of headstones...

Neil

Good guess.

Plan is to have Diabas+WM180 slowly revolving (Solar array of course) on my grave.

Text on stone:

Remember to lube .

Edited By Niels Abildgaard on 19/04/2019 05:42:32

18/04/2019 18:54:12

The dog demanded walking so I did not finish within the edit allowed window.

Why bother with new chineese when world is full of old My- and Boxfords?

First thing i try is putting my MC3 testbar in spindle as shown on the first (Boxford) picture

On the WM 250 on stone there is no runout close to headstock on my Swiss Tesatast.

On the bar far end it has moved 0.005 mm out and oscilates plus minus 0.005mm.

The WM180 straigth out of box and no stone is still zero close to headstock and 0.01 plus minus 0.008.

The 0.01mm stationary error can easily be shimmed away when it meets its stone.

Concavity on the WM250 facing two 100mm disc are around 0.01mm each.

The WM180 is around double but still concave.

The bedways are definately harder than on Boxfords.

The WM250 was 850€ from Holland and the 180 was in Denmark ca 1000€.

Both came with three and four jaw,faceplate and two steadies.

I will use the 250 to make a new bigger spindle for the 180

assem1.jpg

Am getting older so it is some kind of race.

Edited By Niels Abildgaard on 18/04/2019 18:58:06

18/04/2019 17:19:15

I gave a very well performing Boxford away and got a new and younger WM 250 six speed lathe.

RockFord

LatheCrane

 

 

It has got a VFD and a stone to sit on.Plus a much better compound slide arrangement.

wp_20190418_003[1].jpg

A M16 Unbrako 12.9 bolt has had its head reduced 2mm in diameter and surface is at least as good as the Boxford can do.

wp_20190418_005[1].jpg

It has a spindle with 21mm hole and MC3.

I want to have 27mm hole and ER40 instead.

I have slowly to admit that parts are getting to heavy.

A WM 180 has entered my house and will be put on stone and get a VFD plus AC motor.

 

wp_20190409_003[1].jpg

It is intended to make it turn better than Boxfor or WM250.

Stripped for most parts You can se that the bed-headstock has rigidity as a wet newspaper

wp_20190418_004[1].jpg

Edited By Niels Abildgaard on 18/04/2019 17:21:04

Edited By Niels Abildgaard on 18/04/2019 17:23:41

Edited By Niels Abildgaard on 18/04/2019 17:26:28

Thread: Does a 1600rpm bantam have a single v belt?
15/04/2019 06:29:13
I got an old but unused 2hp cast iron Brook Crompton for a really good price).

I found two old motors and they smellt very bad being VFD-ed.

I then bought a new and total happines.

How old is the motor?

Thread: seals for mini lathe tapered roller bearings?
01/04/2019 17:49:33

A Boxford headstock drawing.

There was about 0.05mm clearance between staionary headstock parts and rotating spindle parts.

It was part-filled with grease from factory and sold as Sealed and Greased for life needing no further attention.

Mine worked fine for ten years on two teaspoonfull of grease.

The drawing shows a very early model.There is two things that look like contacting felt rings.

There was neither felt rings or cut outs for them in my lathe.

 

Boxford A spindel.jpg

Edited By Niels Abildgaard on 01/04/2019 17:54:17

Edited By Niels Abildgaard on 01/04/2019 17:58:41

Thread: New Lathe
31/03/2019 14:37:42

Posted by KenJ on 23/03/2019 07:59:52:

My WM240B arrived and is now set up, cleaned and checked; all seems ok. The Warco process was faultless, ordered and arrived within one week.

Kenneth

Good choice.

My WeissMachinery 250 is almost the same and I am modifing/improving it

VFD plus WM250

Thread: ER25 or MT2 Collets
18/03/2019 10:33:31

If the lathe and mill spindle-noses were changed from Morse to ER everything will be better I think.

MT3 machined for ER32 and ER25 for former MT2s?

Same change for Milling machine .

Thread: HY Series (Huanyang) VFDs, setting maximum speed?
17/03/2019 14:00:07

Thank You Andrew for explanation that made me understand the chinese/english manual better.

Programme step 009 sets a voltage and 006 a frequenzy.

At this point the voltage/frquenzy curve can can be made to have a kink(both directions ) or none.

17/03/2019 11:10:43
Posted by Ian P on 13/02/2015 19:24:19:

I only used the lathe a couple of times before I put a switch in the fan lead so I could turn it off when the lathe was not running. I have since fitted an electronic thermostat so the fan only come on when the VFD heatsink gets hot. I have set it 40 degrees and so far the fan has come on only once!

I use the VFD over an output frequency range of 5 to 150Hz and experience no motor overheating eat all. At low frequency the motor torque is low so its never going to be doing much heat generating work, at higher frequencies the fan is turning faster so the motor looks after itself.

Ian P

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?

Thread: VFD Choice
17/03/2019 10:32:27

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

Thread: Tangential tools ?
13/03/2019 08:51:29

Homeground carbide in homemade holder:

Tangential Carbide

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