A Design Method for the Operating Curve of a Deformed Quintic Polynomial Cam

Abstract

The invention discloses an algorithm for a deformation quantic-polynomial type cam operation curve, aiming to limit operation parameters during swinging of a swing arm of a cam. The cam constructed by the algorithm does quantic-polynomial motion in the initial phase of the curve during swinging, then does constant-speed motion in the current speed when reaching the highest speed, and decelerates according to the quintic polynomial until stopping motion when moving to a preset point at the constant speed. By the algorithm, the maximum speed of the swing arm of the cam can be reduced, and centrifugal force of a cam mechanism can be reduced.

Description

technical field [0001] The invention relates to a method for designing a cam operating curve. Background technique [0002] At present, the commonly used cam curve algorithm is relatively mature, but in practical applications, for some mechanisms with long swing arms, due to the large radius of gyration of the swing arm, a higher speed means that the corresponding centrifugal force increases, and for some rotary turntable mechanisms will have an impact. [0003] The commonly used cam curve equations are as follows: [0004] 1. Isokinetic motion [0005] At the beginning and end of the stroke, the speed has a sudden change, and the instantaneous acceleration is infinite, which makes the mechanism have a strong impact, which is suitable for low-speed and light-load occasions. [0006] 2. Equal acceleration and deceleration motion [0007] The speed curve is continuous and there is no rigid impact. However, when the stroke starts and ends and when the acceleration and decel...

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Problems solved by technology

[0009] This kind of motion law has a sudden change in the acceleration at the beginning and end points, which will also cause flexible shocks, and is only suitable for medium-load situations.

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