In this video I fabricate a 3point linkage weight frame to go on the front of a tractor.
I design the whole thing in Onshape first before I start.
I then cnc plasma cut out the parts, these are cut from 15mm plate. Then main piece is pressed to shape with the press brake.
I cut some 80x80x6 box section to use as the frame: The main beam, the upright and 2 pieces cut at a 45degree angle.
Everything needs a quick sand down and clean up before assembly.
The main beam is slid through the piece of 15mm that was pressed, the 2 extra braces are also put into place and tacked welded, the upright is squared up and tacked and then the two 45degree angle boxes are tacked on.
The bottom link outer plates are tacked on and then the top link brackets.
I decided I’ve got the hole centres between the bottom link and top link too close, so I redesign and plasma out another pair of top link brackets that have a higher hole centre. The old ones are removed and the new ones are tack welded on.
Once I’m happy with how everything is fitted together, I weld everything up.
Before paint, I give the frame and block a degrease and pressure wash off.
The frame is painted with red oxide first and then both are finished in black. Once the paint has dried, I bolt the block to the frame.

Hope you enjoyed the video.
Thanks for watching!