Member postings for Emgee

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

Thread: A request
16/12/2015 15:50:36

Hi Ady1

Your statement must be true as I didn't have too much difficulty reading your final para.

We have to accept this is a Forum with all kinds of members, grammar and spelling doesn't matter so much to me as long as the message can be understood.

Emgee

Thread: Cutting Internal threads
16/12/2015 08:24:05

Hi Peter

Most I have seen have been home made, a 55 or 60 degree raised shape on the end, a 90 degree segment cut or ground out to provide the cutting edge for threading.

Emgee

Thread: Myford rear toolpost
15/12/2015 17:44:09

rtp adjuster.jpgThis RTP may be like Alans, made by a toolmaker many years ago, could have been from plans I'm not sure. I find it very useful for grooving and parting without problems.

2 more pictures in my Album.

Emgee

.rtp on lathe.jpg

Edited By Emgee on 15/12/2015 17:45:01

Thread: Collet Identification and info wanted please.
15/12/2015 14:10:57

Hi Martin

Not sure if the Photo Album will allow PDF but if you save the scans as jpg they should upload to your Album.

Emgee

Thread: Syncing up Arduinos
14/12/2015 15:15:04

Andy

A bit more info would help !!!!!!!!

Emgee

Thread: Formulae required
10/12/2015 23:22:11

John, Won't the radius of cut remain at 37.5 rad regardless of angle of the head ?

Emgee

Does this page help ?   1728.org/circsect.htm

 

Edited By Emgee on 10/12/2015 23:40:29

Thread: Tapping chuck
10/12/2015 14:20:19

Chris

This may suit you, Floating tapping head with ER20 collets, drawback is it's on a 20mm diameter shank.

Just search for Er20 tapping head set

Emgee

$_103.jpg

Thread: Postman Cometh Part 2
09/12/2015 15:12:35

The sound from that fly-cutter tells you it's working a treat, typical of cast iron.

Emgee

Thread: Steady rest - metal or roller bearings ?
09/12/2015 13:09:33

Hi Chris

I believe the ingress that Roger referred to was the ingress of swarf between the bearing OD and the rotating work.

To ensure no marking on the work I clamp and turn a nylon collar to fit the work for the hardened steady fingers to run on. The clamping Jubilee clip has been removed in the picture below.

Emgee

setup in steady.jpg

Edited By Emgee on 09/12/2015 13:13:11

Thread: Tapping chuck
09/12/2015 12:59:46

Hi Chris

What you describe and want is normally called a "Floating head" type, this would allow a small amount of spindle down function beyond tapping depth before the spindle stop and direction change to rev out.

Emgee

Thread: Power shower tripping earth leakage
08/12/2015 13:43:18

Les

Does insulation resistance LN-E (cpc) really need to be 10 Megs to comply with regs ?

My advice would be call a registered sparks or repairer.

Emgee

Thread: CM10 Mill Gears
07/12/2015 23:05:47

Hi Iain

Fly cutting usually involves an interrupted cut, or even 2 interrupted cuts per rev of the spindle. Taking light cuts should not cause damage but if you go overboard with DOC and speeds I guess it could case a problem.

Emgee

Thread: bridgeport mill table feed wiring diagram with erskin pd/1114/01/b control unit
07/12/2015 21:09:13

Richard

Check the overload hasn't tripped. Isolate power and in the table feed control unit you will see the red re-set button, just press firmly to reset in case it had tripped, if you hear a distinct click then that will be reset.

Worth a try before ripping out the wiring !!!!!!

Emgee

Thread: Emco compact 5 cnc lathe with Welturn
07/12/2015 11:25:03

Hi Will

Could you please send detail of the method and settings in Mach that enabled the use of the Emco spindle controller.

How did the new speed indicator disc work with Mach and do you still have ability to thread ?

As for the Z limit why not have the home switch behind the carriage fitted to the bed but adjustable by sliding to suit the length of the workpiece. Like John says put a line of code in to move the saddle away in Z before the toolchange line then after the toolchange move back by the same amount, tool offsets will be used in the toolchange line to ensure the tool is at the correct place.

Sending the carriage to a home switch positioned at the tailstock end of the bed creates far more use/wear on all components than necessary.

Emgee

Thread: Website is deformed on login page
06/12/2015 14:28:08

I have the black line through the Login bar on an Android Samsung tablet, not an easy task to login but possible if desperate !!!! It has been that for the last 3 years.

Emgee

Thread: Warco GH1236 won't run
05/12/2015 19:20:52

Hi Paul

I would have thought with any of the safety interlocks broken the spindle should not run at all, not even "inch" in any direction.

Emgee

Thread: Aluminium swarf
05/12/2015 19:05:50

Hi JA

20 degrees sounds a lot to me, you could try about 7 degrees with a chip breaker groove ground in behind the cutting edge.

I normally use insert type tooling unless a special is needed, then like you it's HSS ground to suit the job.

Emgee

Thread: Advantages of cast iron rounds
02/12/2015 17:08:06

Picture shows the inside of a cast iron piston made for an ETWestbury designed engine that was fitted to a field charger used for charging radio transmitters in the field during WW2. The engine/charger assembly was parachuted in to the agent/resistance.

The original piston was made from a casting and had 2 top compression rings and an oil scraper ring close to the skirt, the small lip below the bottom ring failed and a large part of the piston broke away. The new piston was some 20% heavier than the original.

Emgee

.ci piston.jpg

Thread: Emco compact 5 cnc lathe with Welturn
02/12/2015 15:41:30

Hi Will Bells

Sorry about the earlier typo, Which model Digispeed have you decided on ?

Emgee

Thread: Advantages of cast iron rounds
02/12/2015 08:45:34

Thanks Windy

Is the piston ring also cast iron ?

Emgee

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