Member postings for Peter Bell

Had great success with my ER 16 spindle from Euro Arc but programmed my invertor to use on on another motor and for forgot to adjust the base frequency back afterwards---result smoke from the spindle motor---havent tried it since!

Presume its not possible to rewind them and its a bin job?

Bet John would have a good answer!

Thanks Peter

Hi,

Been checking my KX milling machine and setting up the table bearings as there was a bit of play.

Everything looks fine but I assumed that the oil pipes which dissapear into the inards went to the ball screws as well.

Of course they dont and the question is do I need to lubricate the ball screws?

Thanks

That looks a really good job John Absolutley facinating

Would be interested to know more about and just wondered if you will be writing it up anywhere including the gps electronics?

Just repairing a small trurret clock with a worn out dead beat escapement and made new pallet arms and nibs using my cnc mill. Never managed to make successful deadbeat pallets before so feeling quite pleased at the moment.

Peter

Thanks Chris,

Very inspirational videos from a master craftsman.

I have found a good explanation of setting out vulliamy pallets by Claude Reeve in ME from 1966 which I think I should be able to use and adapt for what I want. A lot of the deadbeat set out drawings are very complicated---well at least to me!

Peter

Hi,

Got to repair a small turret clock made by Foster of Salford for a friend, Quite a nice compact clock, it has been carefully restored previously but it looks like the pallets are replacements from a long time ago and are badly made and having been cleaned up a number of times now have lots of drop on entry and exit with short impulse faces.

Dug out the books showing how to set out pallet making using measurements of the escape wheel and wheel centres etc and it struck me that the job lends itself to CAD and even some cnc profiling afterwards.

Question is has anyone gone down this route or can offer advice?

Thanks Peter

Thanks for the advice.

Just looked up the spec and see it refers to 25 micron or 1 thou thick. As I intending doing it as per the article in the current MEW is there any easy way of measuring when I have acheived this or indeed is it possible to get this thickness within the limitations of the kit?

Peter

Thanks Ray.

Yes we intend anodising it., Did my centering microscope which worked out ok but felt a bit inspired by the excellent article on anodising in the latest MEW especially as some dyes are available on e-bay.

Peter

Hi,

I would like to maching a house sign using Vcarv Pro to produce the artwork and cnc it on my Seig KX3 mill.

I know it alway difficult to decide on a material to use but I see that suitably sized 10mm off cuts of 6082 are available at the right price on e-bay.

Anyone have any experience of cncing 6082 or can suggest a better material/grade to use?

Thanks Peter

Just reading the article about the 3d printer in the latest MEW and it sruck me that most CNC mills have most of the parts needed to move things around etc. How long will it be before the heated print heads become available as an add on---or am I missing something?

Peter

Ive hear about this chap before but wonder it he reads this forum and would like to post a few words on the subject? Certainly sounds interesting!

Peter

Hi Ian,

I made a rotary phase converter 11 years ago before inverters were cheap and its been fine. The current running light is around 5a and I start the pilot (about 5hp) in delta (with contactors and interlock) and then switch to star using delay relays. The 400 supply is via an autotransformer. I used the normal motor run caps which are probably running near there top voltage but have survived up to now. It runs my DSG lathe with a 7.5hp motor but that tends to made things dip a bit on startup, in cold weather I run the mill (5hp) first to help.

I run various size 3 phase motors without a problem, think the smallest is a J&S tool & cutter grinder. I use a remote keyfob to switch on and off and I find that really handy so long as I dont lose it. Not sure what walues of cap i use as I found that it depends on the motor but I fond the best pilot motor was about 5.5hp and off a fridge unit. If you want I will try and find my notes.

Peter

Thats a really good idea and well made.

I recently had to shorten some 10 & 12 ba screws so made the simple chuck shown. I used a hex brass body with a plate soldered to the end with a suitable hole. The screw to be cut is held on the end of the 4ba steel screw by a magnet and is inserted into the body, tightened up and put into the 3 jaw chuck on the lathe where it is gently filed to length. I found the magnet useful in keeping the screw in place when the chuck is dismantled and can hold it intil it is inserted into the job.

Peter

Hello Harold,

Thanks for your comments, that is what I intend doing, its got to worth a try setting up to recut slightly deeper with as you say nothing to lose., at least its too big!

This is the first clock I have made using ball races and its giving me lots of new experiences which is good but its making it difficult to fiddle things like pivot holes which is why I asked if anyone works backwards and decides the final wheel dia after the arbours have been planted

Since my last post I have discovered my simple depthing tool made years ago as described by John Wilding is no longer flat which has led to the error so I have at least found something.

I have now remember that I have repaired clocks with what apeared to be identical wheels on tooth count until they were measured so it looks like sizing of wheels is more common than what I realised

Peter

Hi Les,

No never solved it really and suspected something moved but gave up and have now got the 4th axis working on the Seig KX3 mill so cut some more wheels on there---seems to have overcome the problem---yes I know its cheating but I want to crack on!

Peter

Thanks for the advice.

I thought about using an abrasive but could be a bit messy and suspect it would pobably alter the tooth form. Dont want to rebush the holes and try again as I may have the same problem and it seems a shame to ignore the pockets I have now.

Think I will recalculate the wheel blank dia (or will get my son to do it!) from the arbour centres and turn the existing wheel down. We should be able to get it back on the mill and use the existing teeth to set it up and then re cut it to suit. We stll have the g code saved so my expert should be able to "tweak" it in a bit.

Thanks Peter

Hi,

Not sure of the capacity but it will run the DSG and Abene mill at the same time with an input current of around 35a depending on cut. The DSG normally runs around 15-25a again cut dependant.

It;s just a 415 autotransformer and capacitors really but I start the pilot motor in star and then run it in delta using timers to reduce the switch on surge. Unloaded it only runs about 3 or 4a but it runs even small loads like the tool & cutter grinder, log splitter etc very easily and I spent a bit of time optomising the capacitors.

Peter

Agree with all that is said about DSG lathes. Find my 17x 72 which dates from 1960 is far more accurate than my Myford Super7. Both have had the beds reground but the DSG is just a joy to use with all the controls so easily to to hand.

As a matter of interest for the last 10 years it has been powered by a home made rotary convertor without any problems (touch wood!) which I switch on and off with a wireless fob.

Peter

Hello,

Thanks for the information. I have looked through the BHI lists a few times just in case I missed it without success. Not sure of the date I am looking for which does not help.

I have a feeling that I read a letter from him in Clocks magazine when I used to subscribe to it in the late 70's early 80's, but dont have the magazines any more to check. John Wilding in his introduction to the Gravity Regulator gives some information on him and quotes that CB Reeve made at least 3 of the gravity regulators, no mean task along with his musical clock and others.

I have heard that he was very helpful and quite a prolific letter writer, sure someone will have more information.

Peter