Method for calibrating and measuring unbalance amount of tire

Abstract

The invention discloses a tyre unbalance amount marking and measuring method, which comprises a tyre unbalance amount marking part being composed of amount marking and eccentricity revising and a tyre unbalance amount measuring part. Wherein, the work finished in the amount marking part is to count the proportion factor between the voltage value measured by the piezoelectric sensor and the practical force worked on the tyre; the work finished in the eccentricity revising part is to use the proportion factor obtained in amount marking to measure and count the unbalance amount of a main shaft and a rim system; the measuring of the tyre unbalance amount is that: according to the proportion factor measured in amount marking and the unbalance amount of the main shaft and the rim system, the practical unbalance amount of tyre is measured and calculated. The invention improves the reliability and stability of data sampling and also can conduct rectifying a deviation automatically, therefore improving the measuring precision and repeating precision of the tyre unbalance amount and reducing error.

Description

technical field [0001] The invention relates to a method for measuring tire unbalance. In particular, it relates to a tire unbalance calibration and measurement method that improves the reliability and stability of data sampling, and can automatically correct the deviation of the rim, thereby improving the measurement accuracy of the tire unbalance and reducing errors. Background technique [0002] The dynamic balance of the tire refers to the different degrees of centrifugal force in each direction when the tire rotates, which is an important parameter for evaluating the quality of the tire. When the dynamic balance of the tire is good, the force in all directions during the rotation of the tire is basically the same. When the dynamic balance is not good, the centrifugal force in a certain direction is too large or too small, which will affect the quality of the tire. It is very easy to cause a tire blowout during operation and cause a safety accident. Therefore, general ...

AI Technical Summary

Problems solved by technology

Due to various reasons, these assumptions are difficult to be absolutely guaranteed in practice, and there will be measurement errors

Although these errors can be analyzed theoretically, it is very complicated and difficult to measure, so the dynamic balancing machine must be calibrated

Since the main shaft of the dynamic balancing machine is connected to the drive motor through the belt and the pulley, and the piezoelectric sensor below is close to the belt, the vibration of the belt will have a certain impact on the acquisition of the signal of the lower channel, although it is reduced by means of software and hardware filtering. Most of the interference is eliminated, but it will still affect the measurement data, which shows that the measurement accuracy of the unbalance under the tire is not as high as that of the upper unbalance.

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