Page 1 of 6 123456 LastLast
Results 1 to 15 of 79
  1. #1
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,444

    Default Table traverse for Chinese mill.

    Hi Guys,
    My Chinese mill does not have a motorised table traverse ! Its a pain, in more ways than one, at times to stand there winding the table back and forth. So I thought that I would see if I could design and build one from scratch. With this in mind I decided to have a trawl around my local scrapyards for something to use and came across a suitable car windscreen wiper motor. I found this one from a wrecked Nissan Micra. I grabbed this one because it was very easy to get it off the chassis bulkhead. Four hex head bolts and it fell out and the power connections were a very convenient plug and socket attached to the back of the gearbox. At this point I didn't know what condition it was in, only that it was quite clean with only a little rust on the motor case where the paint had flaked off.

    When I chose it I didn't realise that it was a two speed motor, but on testing it, it soon became obvious. It also had an intermittent wipe switch built into the gearbox which confused me at first. Anyway it runs quietly in either direction at both speed settings.

    The photographs show two views of the motor and gearbox.
    Attached Images Attached Images
    Best Regards:
    Baron J.

  2. #2
    Join Date
    Jul 2010
    Location
    Melbourne
    Posts
    9,088

    Default

    Hi Baron,

    Some of these motors don't take running backwards very well, the thrust bearings on the worm are designed for it. If have a search there are at least a couple of guys here have built this sort of thing.
    Are you sure the intermittent isnt "park"?

    You'll enjoy powerfeed

    Stuart

  3. #3
    Join Date
    Jan 2011
    Location
    Far West Wimmera
    Age
    63
    Posts
    4,049

    Default

    I have designed one. It will use a 14A, 24v geared motor. Powered by 2 computer power supplies and controlled with an electronic variable control (PWM?). A bit more expensive,but vastly better power and control.

    I am on my phone. I will find the thread tonight.

    Dean

  4. #4
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    71
    Posts
    5,945

    Default

    Dean, looking forward to seeing your set up.
    Kryn

  5. #5
    Join Date
    Jul 2008
    Location
    near Warragul, Victoria
    Posts
    3,718

    Default motor

    Quote Originally Posted by Stustoys View Post
    Hi Baron,

    Some of these motors don't take running backwards very well, the thrust bearings on the worm are designed for it. If have a search there are at least a couple of guys here have built this sort of thing.
    Are you sure the intermittent isnt "park"?

    You'll enjoy powerfeed

    Stuart
    Yes I used a XF Falcon wiper motor. On my DM 45 mill drill it generally does what I need it to , but as Stuart noted, when in reverse the worm/gear tends to chatter above a certain RPM . It is a little annoying because ideally, you want a faster reverse traverse ,for returning the table .

    The speed control PWM controllers are easily found on EBAY . Mike

  6. #6
    Ueee's Avatar
    Ueee is offline Blacksmith, Cabinetmaker, Machinist, Messmaker
    Join Date
    Dec 2011
    Location
    Canberra
    Age
    39
    Posts
    4,515

    Default

    Didn't blu recently post his power feed setup? Can't remember where though, maybe the latest project thread?

    Ew
    1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.

  7. #7
    Join Date
    Jan 2011
    Location
    Far West Wimmera
    Age
    63
    Posts
    4,049

    Default

    Quote Originally Posted by KBs PensNmore View Post
    Dean, looking forward to seeing your set up.
    Kryn
    So am I Kryn, So am I. I have had to put it on hold due to a lack of a working lathe. If you have seen my "New Lathe" thread and the "VFD Circuit Diagram Question" thread, you will know that my lathe is now up and running after nearly 2 years (11/07/12). My old Nuttall was collected on the last day of 2013 so I have been latheless for that time.

    I am taking next week off and I might be able to get some work done on it, but I might not too.

    Some links to threads on the Forum. These are only a couple I have been involved in.

    http://www.woodworkforums.com/showthread.php?t=171862&highlight=mill+feed

    http://www.woodworkforums.com/f65/power-feed-mill-drill-163501/


    I think all the information about my design is in these. Any questions just yell out.

    Dean

  8. #8
    Join Date
    Aug 2010
    Location
    Near Bendigo, Victoria, AUS
    Age
    72
    Posts
    3,102

    Default

    I built just such a table drive for my Cash mill about 22 years ago. Still working well.
    It's 12V wiper motor and I run it with a dimmer switch on the 240V side of a 24V transformer and rectifier. So my rapids are actually 24V but they don't overheat the motor because they only take a few seconds.
    I'm about to modify the setup (as described elsewhere) with controls in my new mill remote control panel.
    I also came across a newly designed DC speed controller (in the mail to me now) which allows setting the maximum current (torque) and speed (by PWM). The clever part of this design is that it monitors the motor speed (electric feedback from the armature in between pulses somehow) and is supposed to maintain the set speed irrespective of load, up to the maximum current set. We'll see how that works - servo function without servo drive....
    For my rapids I have momentary push buttons which - via relays - bypass the speed controller and just feed the motor the full 24 V again.
    The mechanial drive is via toothed belt to the table screw.
    Cheers, Joe
    retired - less energy, more time to contemplate projects and more shed time....

  9. #9
    Ueee's Avatar
    Ueee is offline Blacksmith, Cabinetmaker, Machinist, Messmaker
    Join Date
    Dec 2011
    Location
    Canberra
    Age
    39
    Posts
    4,515

    Default

    Got a link to this controller Joe?

    Ew
    1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.

  10. #10
    Join Date
    May 2002
    Location
    in the outer reaches of Sth Oz
    Age
    75
    Posts
    525

    Default

    Some years back an article was in MEW that shows how to build one. I have it somewhere ...I'll check in the morning if you need it

    Pete
    Boycott Shampoo!!
    Demand Real Poo!

  11. #11
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,444

    Default

    Quote Originally Posted by Stustoys View Post
    Hi Baron,

    Some of these motors don't take running backwards very well, the thrust bearings on the worm are designed for it. If have a search there are at least a couple of guys here have built this sort of thing.
    Are you sure the intermittent isnt "park"?

    You'll enjoy powerfeed

    Stuart
    Hi Stuart,
    I have now ripped all the switches out, but thinking about it, yes, your right. The motor has to stop after one revolution, then the timer just bypasses the switch long enough to start the motor running again, then it continues until the switch opens.

    As it stands now I have just three wires. Black = common, Red = slow and Blue = fast.
    Best Regards:
    Baron J.

  12. #12
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,444

    Default

    Quote Originally Posted by Oldneweng View Post
    I have designed one. It will use a 14A, 24v geared motor. Powered by 2 computer power supplies and controlled with an electronic variable control (PWM?). A bit more expensive,but vastly better power and control.

    I am on my phone. I will find the thread tonight.

    Dean
    Ouch ! 14A, I assume amps.
    I did a current check on this one and it draws just over 2 amps at 14 volts or just over 1 amp at 14 volts on the other speed setting.
    This was with me holding and trying to stop the shaft from turning. Unsuccessfully I might add...
    Attached Images Attached Images
    Best Regards:
    Baron J.

  13. #13
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,444

    Default

    Quote Originally Posted by fxst View Post
    Some years back an article was in MEW that shows how to build one. I have it somewhere ...I'll check in the morning if you need it

    Pete
    Hi Pete,
    If you can easily lay your hands on that article, I would be interested.

    Thanks:
    Best Regards:
    Baron J.

  14. #14
    Join Date
    Aug 2010
    Location
    Near Bendigo, Victoria, AUS
    Age
    72
    Posts
    3,102

    Default

    Me too!
    The one I bought is from Germany and no link, sorry.
    When it gets here I'll know more.

    Cheers,
    Joe
    Cheers, Joe
    retired - less energy, more time to contemplate projects and more shed time....

  15. #15
    Join Date
    Jan 2011
    Location
    Far West Wimmera
    Age
    63
    Posts
    4,049

    Default

    Quote Originally Posted by BaronJ View Post
    Ouch ! 14A, I assume amps.
    I did a current check on this one and it draws just over 2 amps at 14 volts or just over 1 amp at 14 volts on the other speed setting.
    This was with me holding and trying to stop the shaft from turning. Unsuccessfully I might add...
    Yes 14 amps. "Ouch"? I prefer to think "Yum". Lots of power. Power supply cost about $25 and can put out 42 amps at 24v together. The PWM $10. The biggest problem is to find a suitable motor. I believe that this feed unit will far outperform a wiper motor. Total cost about $90.

    Dean

Page 1 of 6 123456 LastLast

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •