Announcement

Collapse
No announcement yet.

Cross Braces for I-Beam Gantry above Lathe

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Don52
    started a topic Cross Braces for I-Beam Gantry above Lathe

    Cross Braces for I-Beam Gantry above Lathe

    One friend gave me the top I-beam from an A-frame gantry crane, which I decided to mount on the ceiling above my Lathe in a direction parallel to the axis of rotation of the lathe. My plan is to mount a chain fall on the I-beam to lift heavy chucks and my turret and conventional tail stock for the lathe. Another friend gave me some 2-1/2" x 4" rectangular tubing left over from his jet ski lift project. I cut some 1" plate into 2-1/2" square pieces and turned a 1-5/8" dia boss x 9/16" deep on one side of the plate. My idea is to have the boss stick thru the 1/2" drywall by 1/16", with drywall resting on the square part of the plate. So after the drywall is installed and before the I-beam is mounted you will see four 1-5/8" dia bosses sticking out of the drywall by 1/16" on each end of the I-beam.

    The cross braces are constructed by:
    • Setting up the Lincoln SP-250 welder for short circuit MIG to weld the 3/16" plates to each end of a 2-1/2" x 4" rectangular tube
    • Temporarily installing the cross brace assembly between the joists using two nails on each side of the cross beam
    • Temporarily bolting the pucks to the I-beam and raise the I-beam assembly into position with the manual fork lift.
    • Setting up the Lincoln 210 MP welder for dual shield flux core to tack weld the pucks to the bottom of the tubing, using a horizontal and an overhead weld. I used dual shield flux core because I was concerned with cold lap if I used short circuit MIG to weld the 7/16" thick 2-1/2" square plate with the 1-5/8" dia round boss to the 3/16" thick rectangular tube.
    • Removing the cross brace and fully welding the pucks to the rectangular tube.
    • Re-installing the cross brace.

    The I-beam came with a plate welded to the bottom flange on each end. The plate was warped most likely from when the weld shrunk as it cooled, so I set it up on my arbor press to straighten it out.

    1. Isometric asm
    2. Exploded asm
    3. Exploded cross beam
    4. Drilling plates
    5. Turning pucks
    Click image for larger version

Name:	1. Isometric asm.JPG
Views:	96
Size:	30.3 KB
ID:	590081
    Click image for larger version

Name:	2. Exploded asm.jpg
Views:	80
Size:	50.3 KB
ID:	590082
    Click image for larger version

Name:	3. Exploded cross beam.jpg
Views:	87
Size:	31.1 KB
ID:	590083

    Click image for larger version

Name:	4. Drilling plates (2).JPG
Views:	84
Size:	81.9 KB
ID:	590084
    Click image for larger version

Name:	5. Turning pucks.JPG
Views:	81
Size:	89.5 KB
ID:	590085
    Attached Files
    Last edited by Don52; 05-22-2018, 07:03 AM.

  • ryanjones2150
    replied
    I tell you what Joe, and this is a good deal, you can get that lathe and set it up in my shop. That way I can do all that lifting for you. Be happy to help. It's the least I can do.

    Leave a comment:


  • Tinker Joe 2
    replied
    That is real nice work, your good, I sure love the lathe, going to have to do something like that for myself, fixing to get a South Bend with 16" chuck, all the tooling, that fellow had bought everything you could get for it, even a 12" rotary table, I know I can lift all of that anymore ?

    Leave a comment:


  • MMW
    replied
    Very nice work. I take my hat off to you for taking the time to do quality stuff for yourself. One thing I am guilty of is doing very nice stuff for customers and then when I do something for myself I rush through it to get back to the paying work or just never do it at all as I'm busy doing work for others.

    Leave a comment:


  • Don52
    replied
    21. beam installed
    22. Chain fall
    23. Clausing-Colchester 15 inch Lathe
    24. Turret Tail Stock
    Click image for larger version

Name:	21. beam installed.JPG
Views:	74
Size:	100.5 KB
ID:	590072
    Click image for larger version

Name:	22. Chain fall.jpg
Views:	74
Size:	52.9 KB
ID:	590073
    Click image for larger version

Name:	23. Clausing-Colchester 15 inch  Lathe.jpg
Views:	72
Size:	82.5 KB
ID:	590074
    Click image for larger version

Name:	24. Turret Tail Stock.jpg
Views:	70
Size:	62.6 KB
ID:	590075

    Leave a comment:


  • Don52
    replied


    16. Puck fillet weld
    17. Cross brace installed
    18. I-beam hung on brace from bottom
    19. I-beam hung from top
    20. bolted and nailed
    Click image for larger version

Name:	16. Puck fillet weld.jpg
Views:	80
Size:	82.0 KB
ID:	590066
    Click image for larger version

Name:	17. Cross brace installed.jpg
Views:	77
Size:	91.9 KB
ID:	590067

    Click image for larger version

Name:	18. I-beam hung on brace from bottom.jpg
Views:	80
Size:	98.1 KB
ID:	590068

    Click image for larger version

Name:	19. I-beam hung from top.JPG
Views:	78
Size:	97.2 KB
ID:	590069
    Click image for larger version

Name:	20. bolted and nailed.JPG
Views:	74
Size:	62.4 KB
ID:	590070

    Leave a comment:


  • Don52
    replied
    11. Short circuit welding of end plates
    12. End plate fillet weld
    13. Outside corner weld
    14 Adding one inch (because I measured wrong.)
    15. Dual shield welding of pucks

    Click image for larger version

Name:	11. Short circuit welding of end plates.JPG
Views:	77
Size:	115.5 KB
ID:	590054
    Click image for larger version

Name:	12. End plate fillet weld.JPG
Views:	81
Size:	102.0 KB
ID:	590055
    Click image for larger version

Name:	13. Outside corner weld.JPG
Views:	81
Size:	86.8 KB
ID:	590056
    Click image for larger version

Name:	14 Adding one inch.JPG
Views:	79
Size:	103.7 KB
ID:	590057
    Click image for larger version

Name:	15. Dual shield welding of pucks.JPG
Views:	79
Size:	102.5 KB
ID:	590058

    Leave a comment:


  • Don52
    replied
    6. One puck turned
    7. Parts machined
    8. Straightening plate on I-beam-1
    9. Straightening plate on I-beam-2
    10. Straightening plate on I-beam-3

    Click image for larger version

Name:	6. One puck turned.JPG
Views:	67
Size:	153.1 KB
ID:	590041
    Click image for larger version

Name:	7. Parts machined.JPG
Views:	66
Size:	130.0 KB
ID:	590042
    Click image for larger version

Name:	9. Straightening plate on I-beam-2.jpg
Views:	80
Size:	105.1 KB
ID:	590044
    Click image for larger version

Name:	10. Straightening plate on I-beam-3.JPG
Views:	81
Size:	82.6 KB
ID:	590045
    Attached Files

    Leave a comment:

Working...
X