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Showing results for tags 'Mechanical sequencer'.
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Hi, Before starting on this project I tried searching the net to see if anybody had made anything like this before, but I've come up empty handed. I needed to make a mechanism that would allow me to have one motor run two functions in sequence, where one action was executed first, then the second, and when you reverse the motor, the sequence reverses as well. That is, in reverse the second action will happen first. This would be useful for any two function that are supposed to be in sequence, like: The forks and the extendable mast on a forklift, the feet of a mobile crane, sections of the boom on a mobile crane, and so on... Detailed description: I've made a two action mechanical sequencer that first will execute one function til it stops, then the second til it stops. When you reverse the single motor running it, it will reverse first the second function til it stops, then the first function. It you change direction of the motor anywhere, it will reverse the functions from that point, but will keep the same sequence. To explain my self better; if the first function has not reached its stop, and you reverse the motor, the first function will reverse, while the second function will not activate. I've included a couple of pictures, and a movie will be coming soon. I would really appreciate if anybody could help me make it more compact, or come up with a simpler solution to my problem. Pictures: The gray axle into the black 12 tooth gear is the input (from medium or large motor. XL is to slow to engage this direction sensitive gearbox), and the green and pink(?) axle is output 1 and 2. A unintended benefit to this design is that when both outputs reach their stop, the whole construction functions as a clutch and saves the motor from locking up. (The whole setup might however be a bit tough on a medium motor...) Finally the video is ready! And of course, the .lxf file. The file also contains a few older/alternate versions. -ED- EDIT: Added video.