Member postings for ray jones 1

Hi Thank you for all the replies.

The Oil was supplied by Morris's Oil Shrewsbury, one of the most respected lubricant companies in England.

There is no question about quality of the oil, or any possible impurities.

I have discovered that after numerous days of use on the lathe and mill it appears to go "a bit thinner"

I can feel the slides and carriage are now significantly smoother and there is much less friction on the bed.

After the initial shock of the viscosity, I am very please with the product.

Ray

Hi

I have recently purchased some "slide oil" from a very long established oil supplier. The idea being I would use it on my lathe and mill.

I was expecting some "thinnish" type oil.

When I opened my drum of oil I was rather shocked.

The oil supplied to me has a viscosity similar to thick engine/gearbox oil, almost EP90 ( not quite) . In addition to this it is VERY, VERY TACKY. Similar to , or even MORE STICKY than treacle. I have applied it to my lathe bed, but to be honest it seems like a magnet for filings and swarf. I am just wondering what experiences other chaps have experienced with slide oil.

Hi

I need a few castings made of cast iron. Fairly simple design. I can make the Patterns. approximate size would be 20 inches in length. Could anyone recommend a company that would do this at realistic cost please. Many thanks.

Thank you for all of the replies. Item now located.

HI

I am trying to locate a short length of 1/4 BSP metal pipe.

A minimum length of 200mm up to 300/400 mm would be ideal ( or longer)

I have tried all the usual sources. 

Any suggestions to locate a piece, new or used ,

would be appreceiated

Many thanks

ray

Edited By ray jones 1 on 22/11/2017 13:20:02

Edited By ray jones 1 on 22/11/2017 13:24:30

Hi

thank you for the replies.

I have a tool grinder which has a small dividing head with R8 fitting.

If i use a 12mm sqaure collets can then easily grind 12mm lathe cutters

thank you

ray

Hi

I am trying to purchase a R8, 12MM Square collet

any ideas please?

thank you

ray

Hi

I am looking for a length of round Spring wire. Size 2.5mm OD X 2 METERS long. (approx)

Could anyone advise me of a supplier please.

Thank You Ray

HI ALL

Thank you for the replies

The item forms part of a press - so needs to be very thick walled

I have located a 5 inch solid , cut to length,

but I will need to bore it out

thank you ray

HI

I planning a project

I am looking for a Heavy hollow round mild steel bar,

ideal size would be

5 inches OD diameter

2.5 inches ID ( not critical as could be bored out to size)

length 7-8 inches

Any ideas of a supplier please

many thanks

ray

Hi

I need to cut 3/8 BSP external thread on a project.

I need 19 TPI.

Using my imperial Myford 254 my only basic options are

18 TPI or 20 TPI

Any suggestions how to achieve 19 TPI please .

many thanks

Edited By ray jones 1 on 17/10/2016 12:28:14

i have the motor connected to the mill, although be it on a very temporary fit..

using the speed control on the box, the the feed hand wheel will turn from

approx 2 RPM ( for very slow feed) up to 150RPM (for rapid return).

which seems just perfect.

I assume the digital readout on the box refers to Htz.

it reads from ZERO to 900.htz

The motor responds normally from ZERO up to 620htz? then grinds and stops

But restarts when below 620htz

Steamgeek ,did you have this problem?

will keep you advised of progress

Thanks RAY

UPDATE ON PROGRESS

Following all of your kind advice, I purchased

 a stepper controller , pulse generator , as photo and connected them up to a 6 AMP supply and my NEMA 34.

After playing with various Amperage and dip settings, the motor runs "reasonably smooth" - at most speeds - ( but not perfect) .

Using the control box, the motor can be started, stopped , forward and reverses - with ease.,

The slowest speed is approx 5 RPM the fastest approx 200 RPM only. is this normal?

The frequency indicator goes from 0 - 900, The motor runs happy from 0-600,,but once you turn it  past 610 the motor grinds to a halt

Should it run faster or smoother? 

Any advice is appreciated.. thank you ray

Edited By ray jones 1 on 27/03/2015 19:19:41

Edited By ray jones 1 on 27/03/2015 19:20:12

Edited By ray jones 1 on 27/03/2015 19:21:25

Edited By ray jones 1 on 27/03/2015 19:22:23

hi chaps, thank you everyone for the various information and ideas.

I am still working on it . I will keep you advised of progress ...regards ray

I am new to this stepper motor and drives board.

I am trying to set up a simple power feed to a bench mill as shown on some of theses threads.

I have one NEMA 34 MOTOR ,, Mains power unit,, Mega Arduino board and

TB 6600 Stepping motor driving board.

fitting the motor to the mill is the easy bit..

I am not looking for full CNC. All I want is power feed, ,,variable speed and forward and reverse.

Is there such a thing as a simple method to program or wire the driver and board please .

regards

ray

Many Manufactures of Lathes and Small Mills, such as Warco, Toolco, Amadeal and others use a variety DC motors each with variable electronic speed control... The Motor speed variation is achieved by using Pulse Width Modulators... Do the DC motors and/or brushes need much maintenance? Is this system reliable?? Thank You

Thank you for all your replies, I very much apreciate your time , exactly what I needed

, regards ray

hi John

Thank you for the reply, Yes I agree the motor sizes you suggest would be ideal for the VMB..I have acquired a brand new unused variable motor control unit that came off a Myford VMB Mill. There are no instructions or specifications with it... Before I connect it to a motor, I am trying to locate the original motor spec . thank you ray

Edited By ray jones 1 on 07/01/2015 03:13:10

Happy New Year everybody

MYFORD VMB MILL

I am looking for information on the Original variable speed motor

These mills were sold by Myford, they came ready to plug into 240 volt single phase household supply. The system was based on a Danfoss variable speed unit housed in a robust black box.This box was bolted to the left hand side of the mill stand , together with a 220 volt 3 phase motor which was controlled using the box. I have looked on numerous sites on the net, including "Tony Griffiths LATHES' site , but I can't find the info I require.. I am trying to get the exact spec of the original 3 phase motor,.I.E. HP AMPS ETC. Does anyone have one of these mill set up as above? If so is the any chance I could get the info of the motor plate please ? or a photo of it please? I am very grateful for your assistance.. many thanks Ray

Edited By ray jones 1 on 07/01/2015 02:09:43

Hi Dennis,

Thank you for your reply. This 280 is green and "reasonable condition" paint wise, it needs a touch up here or there. Yesterday I detached a gear cover off the drive train and took it to the local paint shop. It is definately Hammerite finish. Only problem Hammerite is limited in colour choice. So they have suggested use a Hammerite mid Green as an undercoat, this gives exactly the right texture. They have identified the colour green as near identical to PEUGEOT CAR green. They have made up a 300ml aerosol of this colour to spray on as top coat.. thank you Ray