CEB Press/Manufacturing Instructions/Soil loading drawer: Difference between revisions

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===Step 7: Grind the entire drawer flush===
===Step 7: Grind the entire drawer flush===
{{Warning|There cannot be any outstanding bumps or welds anywhere; the drawer will be sliding in and out of a tight spot and bumps will catch on the frame crossmembers.}}
{{Warning|There cannot be any outstanding bumps or welds anywhere; the drawer will be sliding in and out of a tight spot and bumps will catch on the frame crossmembers.}}
*Make sure there's no welding spatter where the rollers will be rolling. Grind any off with a small grinder.


===Step 8: Check the Rails===
===Step 8: Check the Rails===

Revision as of 21:26, 23 August 2011

Final Drawer 2.jpg

Tools Required

Materials Required

IDQuantTypeLength Total NameDetail

Diagrams

Drawer Parts

Drawer Parts

Drawer Assembly Step 1

Assemble Drawer 1

Drawer Assembly Steps 2-3

Assemble_Drawer 2

Drawer Assembly Steps 4-5

Steps 5 and 6

Drawer Assembly Step 9

Step 9



Fabrication Steps

(note: part numbers refer to the recently-published parts list on the Bill of Materials page)

Step 1: Weld Press Plate and Spacer Assembly:

  • a) Lay the spacer tube(S24) on top of the press plate(S26), align the sides and make the back edge flush.
    Steps 1b, 1c

Warning.png Warning: Ensure all edges are tight and squared; this piece is critical, it must be a uniform height throughout the entire item. Grind off any imperfections.

  • b) Tack weld the two together in many places (at least 3 on each side) to ensure nothing will warp.
    Step 1e
    • Double check everything for squareness!!
  • c) Weld the two together on all edges where they touch.


HintLightbulb.png Hint: It is a good idea to weld in 1” or 2” increments, skipping around to different places to prevent warpage.

  • You will need to weld multiple layers where the tubing is rounded.
  • d) Grind off any weld which prevents the vertical support (S31) from being square and flush with both the spacer tube and the press plate.
  • e) Weld the vertical support to the press plate and spacer tube assembly.
  • f) Grind down the welds on the open end of the tube so they are flush with the rest of the tube.

Step 2: Tack Sides

Step 2c
  • a) Lay the spacer/press plate assembly down so the press plate is touching the table.
  • b) Align side pieces(S29) with spacer and press plate assembly. Insure the two are square vertically and horizontally with the spacer, and that everything is touching the table.


HintLightbulb.png Hint: It might help to use angle iron tacked to your table and the sides, so it insures they are vertically square. This also makes it a bit easier to align everything else.
Using angle to insure vertical and horizontal squareness
  • Also, it may help to use paper shims between the sides and the tube to properly space them.
  • c) Tack the sides to the tube on all sides in multiple places except where it is touching the table. Add a few 1" seams to prohibit them from moving.

Step 3: Tack back

Step 3: the back in place
  • a) Place the back piece (S22).
  • b) Tack the back piece in a few spots, with a 1" seam on each side.







Step 4: Tack Roof, Inner Rails

Step 4
  • a)Grind off the welds for the back and side pieces so that the entire drawer is flush.
  • b)Flip the drawer over and tack the sides from the top.
  • c) Place the roof(S25) and inner rails(S27) in their respective places. Ensure inner rails are perfectly parallel (varying no more than a 16th of an inch) and square throughout the entire length.
  • d) Tack them in multiple places except where they are touching the table.


Step 5: Tack outer rails (S28)

Warning.png Warning: Ensure they are perfectly parallel; otherwise they will leave the roller guides. Insure it varies no more than 1/16" over the entire length.


HintLightbulb.png Hint: Use the paper shims for this.

  • Tack them in multiple places except where they are touching the table.

Step 6: Weld entire drawer

Welding little pieces at a time


HintLightbulb.png Hint: Weld short lengths at a time and jump around a lot to minimize warping.

  • All the seams should be completely welded except the difficult to reach places between the inner and outer rails, those can be welded about 50%.
  • You may want to grind off the welds in between passes around the drawer to allow it to cool.



Step 7: Grind the entire drawer flush

Warning.png Warning: There cannot be any outstanding bumps or welds anywhere; the drawer will be sliding in and out of a tight spot and bumps will catch on the frame crossmembers.

  • Make sure there's no welding spatter where the rollers will be rolling. Grind any off with a small grinder.

Step 8: Check the Rails

Pinching the rails inwards using C-clamps
  • The rails likely got warped outwards on the side with the back while you were welding.
  • If they are not still paralell, you will need to pinch them inwards so that they are. You can do so using two C-Clamps.






Step 9: Weld the tongue in place to the back of the drawer, ensuring it is square and centered.