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Descrição
This is my first clock design. My first design motivation was to use bear rings on every moving part and use fixed rods. So the design contains 10 9x5x3 and 2 14x5x4 and 2 6x2x2 bearings.
The rods are 2mm steel, 4x3(outer,inside) steel, and 3mm brass rods. The number of rods and sizes can be checked from the design files.
Creating your own clock design is a great fun, where you can have tones of opportunities of design patterns on clock base, gears etc. It makes the design very personel. This was a strong motivation to start this clock.
This is my first design. So I still have open issues with the design, like:
- some screw positions are hard to reach (my solution: not necessary)
- some bearing positions are loose for its bearing. (my solution: glue)
- winding is not well designed (my solution: hold the weight by hand, wind the gears manually)
- adjusting hand and minute hands is not ergonomic. (my solution: I keep the rods a little long inside them to keep friction good enough)
- the thickness of gears seems a bit too much. Their interior design patterns also can be reduced. The side effect is longer printing time.
The clock works perfect with 3kg weight. I tested with less weights like 2kg and stills works but weight is not a problem actually for me. I prefer longer running times so I will try to increase running time by using pulleys. At the moment without a pulley the clock can go 24hours with 53cm rope displacement. I use 1.3m long rope, it can go easily 2 days.
A major point in my design is to fix bearings (9x5x3) on their rods (3mm). I don’t want any bearing to touch a stopper or move along the rod. My solution is to use brass rods, not steel. After I place every gear on their rods, I mark the brass for the position of the bearing and just with pliers firmly squeeze that mark points. Than it will simply keep the bearings in position, better than glue.
The clock is a big one. It is 30x38cm and with a pendulum length of 70 cm. I share the design files for fusion360. The clock has around 50 pieces to be printed. Sharing the whole design was a better approach for preparing 3d printable files of such a complex piece.
https://www.youtube.com/shorts/jzdJVjty1V4
Yasin Yılmaz 10-08-2022 Istanbul
