Thanks: 0
Needs Pictures: 0
Picture(s) thanks: 0
Results 1 to 13 of 13
Thread: Hercus 260 Running in Reverse
-
29th July 2013, 04:36 PM #1New Member
- Join Date
- Jan 2012
- Location
- Perth
- Posts
- 2
Hercus 260 Running in Reverse
Hi Guys, I have just bought a Hercus 260 lathe with a 3-phase motor that is an ex High School unit. I bought it from a machinery shop and it was supplied with a flying lead (no plug). It looks like the machinery shop may have replaced the cable as it looks brand new. When wired up to 3-phase in my shed using the correct wire colours the chuck turns in reverse. I cannot see a reverse switch anywhere. I know I can make it run in the correct direction by swapping 2 phases but shouldn't it have a forward/reverse switch as standard?
See my electrical/switch panel photos below:
ps: it is a model number "ATMH" with serial number 18398. Does anyone know how old it would be?
20130728_171255.jpg20130728_171236.jpg
-
29th July 2013 04:36 PM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Location
- Advertising world
- Posts
- Many
-
30th July 2013, 10:24 AM #2GOLD MEMBER
- Join Date
- Nov 2007
- Location
- melbourne australia
- Posts
- 2,643
Dunno why it hasn't got a Rev switch. Maybe it was originally single phase? Or that may not be the original cabinet.
It was made in 1983.
Have you got the Hercus Maintenance Manual and the Spare Parts manual? If not, PM me your email address and I'll send them to you. I also have a PDF of the Textbook of Turning too.
Chris
-
30th July 2013, 11:00 AM #3Mechanical Butcher
- Join Date
- Oct 2004
- Location
- Southern Highlands NSW
- Posts
- 920
Could be it was supplied to the school with no reverse capabiltiy, to prevent the chuck unthreading off inadvertantly?
3 phase motors can change direction almost instantaneously, Single phase motors with starter windings have to stop spinning before changing direction, which is a bit safer.
Jordan
-
30th July 2013, 10:51 PM #4Novice
- Join Date
- Aug 2010
- Location
- Sydney
- Posts
- 11
My 260 never had reverse when I purchased it. Early 80's model. Ex school machine. I know this because BAZA carved his name into the back of it in 88. Finally found a cabinet which had the reversing switch gear that I could use on flea bay.
You need reverse. Dont know how I lasted so long without it.
-
31st July 2013, 04:37 PM #5New Member
- Join Date
- Jan 2012
- Location
- Perth
- Posts
- 2
Thanks for the PDF's jack620, very much appreciated. For now I have switched 2 phases to get it running forward. I suspect you guys might be right about schools not having reverse fitted for safety reasons.
Other than threading are there many other operations that require reverse?
-
31st July 2013, 07:18 PM #6GOLD MEMBER
- Join Date
- Jun 2007
- Location
- sydney
- Age
- 64
- Posts
- 3,566
There could be depending on the machining operations you may wish to perform.
-
31st July 2013, 08:30 PM #7GOLD MEMBER
- Join Date
- Nov 2007
- Location
- melbourne australia
- Posts
- 2,643
That's not a very helpful answer pipeclay.
Turbo,
You don't even need reverse for threading. My 3 phase 260 has a reverse switch, but I've only ever used it once to 'run in' a model engine I built.
Chris
-
31st July 2013, 09:46 PM #8GOLD MEMBER
- Join Date
- Jun 2007
- Location
- sydney
- Age
- 64
- Posts
- 3,566
It is no good me telling someone what I use reverse on a lathe for as it may not have any relevance to what they do.
If they may not already have some idea of when they may require reverse may they don't need it.
-
31st July 2013, 10:38 PM #9GOLD MEMBER
- Join Date
- Nov 2007
- Location
- melbourne australia
- Posts
- 2,643
His question was unambiguous: "Are there many other operations that require reverse?". I can't think of any, but then I don't know much about machining. Maybe you could just list the operations you use reverse for. Would be more useful than your previous two posts.
-
1st August 2013, 12:10 AM #10Senior Member
- Join Date
- Mar 2013
- Location
- Qld Australia
- Posts
- 175
You sometimes need it when threading, and for left handed threads. I used reverse on mine for the first time about a week ago when doing a 30mm x 3.5mm thread on stainless, no matter what setting on the dial I tried it would always be out by about 1-1.5mm so after stuffing up 3 inserts and ruining the thread I decided to leave the carriage engaged, when the insert reached the end of the thread I wound out the cross feed a bit till it cleared the thread and then reversed the motor to the start, wound in the cross feed a little bit more than the previous pass to increase the depth of cut and continued the same way till it was all finished. That way the half nuts are always in the same position. You also use it for cutting right to left. I should also point out that my machine has 2 reverse levers. One of them will also reverse the direction of the work piece as well as moving the carriage from left to right. Not sure what your lathe will do but probably a good idea to find out if your chuck is still spinning anti-clockwise whilst the carriage is going from left to right. If it is going clockwise then you won't be able to cut in that direction. Hope this helps.
Cheers
Ed.
-
1st August 2013, 04:24 AM #11GOLD MEMBER
- Join Date
- Jun 2007
- Location
- sydney
- Age
- 64
- Posts
- 3,566
Turning.Boring,Parting,Taper Cutting, Chamfering, removing Dies or Die Nuts Drilling, Tapping, Reaming hope this helps, and Milling.
-
1st August 2013, 08:36 AM #12GOLD MEMBER
- Join Date
- Nov 2007
- Location
- melbourne australia
- Posts
- 2,643
I read that you should never run a reamer in reverse?
-
1st August 2013, 09:28 AM #13GOLD MEMBER
- Join Date
- Jun 2007
- Location
- sydney
- Age
- 64
- Posts
- 3,566
That would be correct, even a Hand Reamer when removing.
Similar Threads
-
Overseas Swap Reverse Reverse.
By Penpal in forum WOODTURNING - PEN TURNINGReplies: 8Last Post: 10th August 2012, 01:05 AM -
Sanding in reverse.
By RETIRED in forum WOODTURNING - GENERALReplies: 30Last Post: 8th June 2010, 08:14 PM -
reverse chucking
By Daddy3x in forum WOODTURNING - GENERALReplies: 8Last Post: 9th April 2009, 12:06 PM -
Reverse parking
By Wongo in forum NOTHING AT ALL TO DO WITH WOODWORKReplies: 30Last Post: 12th October 2006, 09:10 PM -
Why have reverse?
By journeyman Mick in forum HAND TOOLS - POWEREDReplies: 9Last Post: 6th December 2004, 10:52 PM