Light Screen: Difference between revisions
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Drill the castor holes on the ground tubes. Position tolerance: +/- 3mm (1/8") | Drill the castor holes on the ground tubes. Position tolerance: +/- 3mm (1/8") | ||
Lay the ground tubes and vertical tubes on a flat working surface. Position the tubes for welding- the vertical tube should be at the middle of the ground tube | Lay the ground tubes and vertical tubes on a flat working surface. Position the tubes for welding- the vertical tube should be at the middle of the ground tube- position tolerance +/- 3mm (1/8"). Use a measuring tool to ensure perpendicularity of vertical tube to ground tube. Make 2 tack welds on each of the 2 side edges between the ground tube and vertical tube. Remeasure perpendicularity. Tack the top and bottom edges. Perform full weld. | ||
Lay down the frame so that the rectangular plane is parallel to the floor. | Lay down the frame so that the rectangular plane is parallel to the floor. | ||
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Cover the rectangular frame with the protection screen and mount with 4 C-Clamps at the corners and 2 C-Clamps at the middle of the top and bottom horizontals (warning: make sure that the non-rotating end of the C-Clamp is compressing the screen- otherwise the compressed rotation can damage the screen) | Cover the rectangular frame with the protection screen and mount with 4 C-Clamps at the corners and 2 C-Clamps at the middle of the top and bottom horizontals (warning: make sure that the non-rotating end of the C-Clamp is compressing the screen- otherwise the compressed rotation can damage the screen) | ||
Raise the light screen to its functional orientation. | |||
Revision as of 19:58, 27 September 2012
Introduction
Action Info
Theory:
Use rectangular-ish frame made of 4 square tubes welded at the corners.
Use small C-clamps to hold light curtain to frame.
Weld 2 additional long square tubes at the bottom corners for standing support parallel to the ground surface but perpendicular to the frame plane.
Mount 4 castors near the ends of the long square tubes for mobility.
Materials:
1/16" x 2" x 2" steel square tube of following lengths:
60cm x2 as ground tubes - drill a hole for mounting the castors 3cm from ends, 1" from width.
180cm x2 as vertical tubes - to be welded to the middle of the ground tubes
100cm x2 as horizontal tubes - to be welded to the top and bottom of the vertical tubes
4 castors (single bolt mounting style)
180cm x 100cm area translucent UV/IR protection screen
3" opening C-Clamp x6
Procedure:
Cut the stock steel tube to the part lengths. Length tolerance: +/- 3mm (1/8")
Drill the castor holes on the ground tubes. Position tolerance: +/- 3mm (1/8")
Lay the ground tubes and vertical tubes on a flat working surface. Position the tubes for welding- the vertical tube should be at the middle of the ground tube- position tolerance +/- 3mm (1/8"). Use a measuring tool to ensure perpendicularity of vertical tube to ground tube. Make 2 tack welds on each of the 2 side edges between the ground tube and vertical tube. Remeasure perpendicularity. Tack the top and bottom edges. Perform full weld.
Lay down the frame so that the rectangular plane is parallel to the floor.
Install the castors
Cover the rectangular frame with the protection screen and mount with 4 C-Clamps at the corners and 2 C-Clamps at the middle of the top and bottom horizontals (warning: make sure that the non-rotating end of the C-Clamp is compressing the screen- otherwise the compressed rotation can damage the screen)
Raise the light screen to its functional orientation.