Middle vibration structure of soft support dynamic balancing machine of multi-support transmission shaft

Abstract

The invention discloses a middle vibration structure of a soft support dynamic balancing machine of a multi-support transmission shaft, and belongs to the technical field of transmission shaft dynamicbalance detection. The middle vibration structure comprises a machine tool driving component and a vibration measuring vibration structure component. A work surface of a machine tool body is equippedwith a slide rail. A headstock, a left vibration structure, a right vibration structure, and the middle vibration structure are all mounted on the slide rail of the machine tool body. A middle vibration structure base is connected to a vibration structure support block via two sets of left-and-right swinging vertical leaf springs. The vibration structure support block is connected to a vibrationstructure tool base through two sets of front-and-rear swinging vertical leaf springs and a set of up-and-down swinging horizontal leaf springs. According to the middle vibration structure of the softsupport dynamic balancing machine of the multi-support transmission shaft, a set of left-and-right swinging vertical leaf springs are added to the middle vibration structure of the balancing machineto increase the axial freedom of the middle vibration structure during dynamic balance detection, so as to reduce and eliminate the influence of the deflection caused by the transmission shaft bracketpart at the time of rotating at high speed on the accuracy of dynamic balance detection, which is convenient for a vibration measuring sensor middle of the vibration structure to detect radial vibration change caused when the transmission shaft rotates more reliably and accurately.

Description

technical field [0001] The invention discloses an intermediate pendulum frame structure of a multi-support transmission shaft soft support dynamic balancing machine, in particular to the technical field of transmission shaft detection. Background technique [0002] At present, in the automobile transmission shaft manufacturing industry, the transmission shafts used in commercial vehicles, pickup trucks and other models are multi-joint structures. There are two types of dynamic balancing machines used in the manufacturing process of such transmission shafts, one is hard bearing and the other is It is a soft support. With the continuous increase of the driving speed of the vehicle, the working speed of the equipment when the transmission shaft is dynamically balanced is also continuously increasing. In order to accurately detect the unbalance during the installation of the transmission shaft, the intermediate support fixture is the bearing outer ring of the intermediate suppor...

AI Technical Summary

Problems solved by technology

With the continuous increase of the driving speed of the vehicle, the working speed of the equipment when the transmission shaft is dynamically balanced is also continuously increasing. In order to accurately detect the unbalance during the installation of the transmission shaft, the intermediate support fixture is the bearing outer ring of the intermediate support of the transmission shaft. The top is tightly fixed, and when the speed of the balancing machine exceeds 3500r / min, there will be problems such as the deflection of the transmission shaft causing a great influence on the separation ratio of each detection plane, inaccurate vibration value and phase detection, and a low reduction rate of the balance, which directly affects Balanced production quality of drive shafts

[0003] At present, the middle swing frame of the commonly used soft bearing dynamic balancing machine has two "back and forth swinging vertical leaf springs" and one to two "up and down swinging horizontal leaf springs" structures, which can facilitate the vibration sensor of the swing frame to receive the transmission. The radial vibration changes when the shaft rotates, but for the section with the intermediate bracket in the multi-section transmission shaft at high speed, the axial length will change due to deflection, and this length change is caused by the shaft of the swing frame at one end of the middle swing frame. Insufficient degrees of freedom are limited, which affects the accuracy of separation ratio, vibration magnitude, phase, etc.

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