Need a solution -- converting a translatory motion into rotary

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Discussion Overview

The discussion revolves around mechanisms for converting translatory motion into rotary motion, specifically focusing on achieving high RPMs while handling a load of approximately 250 kg. The context includes design considerations and calculations related to various mechanical systems.

Discussion Character

  • Technical explanation, Debate/contested, Experimental/applied

Main Points Raised

  • One participant suggests using a crankshaft mechanism for the conversion of motion and expresses a need for design assistance to achieve desired RPMs.
  • Another participant notes that a smaller pinion will result in higher RPMs and questions the purpose of the RPM, as well as whether the 250 kg load is moving reciprocally or just once.
  • A participant clarifies that the load is indeed reciprocating and mentions using springs for recoil, indicating that the energy absorbed by the springs is a factor in the design, along with gear trains to maximize speed.
  • One participant questions the appropriateness of using a crankshaft, similar to those found in engines, for this application.

Areas of Agreement / Disagreement

Participants express differing views on the mechanisms to use, with some advocating for a crankshaft while others explore alternative designs like gear trains and pinions. The discussion remains unresolved regarding the optimal solution for the conversion of motion.

Contextual Notes

Participants have not fully explored the implications of load dynamics, energy losses in the system, or the specific requirements for RPM in relation to the application. There are also unresolved aspects regarding the effectiveness of the proposed mechanisms.

monster_head
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Can anyone suggest me a mechanism which can provide me a good rpm when I'm converting a translatory motion into rotary one. I've crankshaft in ma mind. The load is of about 250 kgs and its loaded on a panel and I need to convert that linear downward motion into rotary and with a good rpm. And even have made calculations for rack and pinion. But ain't gettin the speed.. Badly need help with the design..
 
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The smaller the pinion the faster it'll spin (more rpm). What will you use the rpm for? Is the 250 kg load reciprocating or is it just a one-time downward motion?
 
its is a reciprocating 1. I'm using springs to provide a recoil to the panel. apart from the energy absorbed by the spring i need the it provide me the spin. I'm using gear trains to maximize the speed. but its totally depended on the displacement of the panel due to the load and the spin provided by the its displacement
 
What's wrong with a crankshaft like in an engine?
 

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