4
votes
How to design a gear escapement like in an old pendulum clock?
The mechanism is called an "escapement", and part of its function is that the gear imparts energy to the swinging teeth in order to keep the pendulum (or whatever) moving in spite of any frictional ...
- 6,949
1
vote
How do rotate a picture on a wall once every 24 hours?
Companies such as Crouzet make small synchronous motors with gearboxes. I would consider,
Putting a small gear wheel onto the gearbox shaft.
Getting someone with a laser cutter to create an acrylic ...
- 10.9k
1
vote
How do rotate a picture on a wall once every 24 hours?
Someone asked for something similar before and one difficult requirement which they listed that you did not, but I am almost certain you have, is noise. That rules out small, heavily geared motors.
...
- 5,621
1
vote
XL timing belt missing Dimension!
What you want is called the belt's neutral axis. The neutral axis is what coincides with the pulley's pitch circle. You have to look this up for each belt, because it depends on the way the belt is ...
- 4,900
1
vote
Understanding a Variable Lift Valve Train Patent
The rotation of shaft 119 with the cam changes the load on the valve springs, but it also changes the location of the fulcrum of the lever assembly parts 101, 103 and 104.
As the bulk of the cam ...
- 7,297
1
vote
How to estimate the time cost of interrupting a task and picking it up again later
The amount of information you specified is too limited. If you had more information, maybe you could do it, but not as stated. Machining tasks can vary greatly. I can imagine some parts where it ...
- 2,656
1
vote
How to estimate the time cost of interrupting a task and picking it up again later
No, because the number to be produced changes the percentage ie the setting up time can be longer than the machining time for 1 piece but 3% for 100 pieces and 0.003% for 1000 pieces...
- 15.9k
1
vote
How to mount timing pulleys/belts for small DIY project
I tried both ways, idlers and slide, with and without additional spring.
A) Idler with spring tends to oscillate when load torque is not constant (it is rarely constant).
B) Sliding motor and spring ...
1
vote
air resistor decreasing resistance over fixed time
Use a flap valve - allows air out and if you design the "catch" correctly then won't allow air to pass until a certain load or depression is achieved.
- 15.9k
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