2012年7月18日星期三

The mechanical theory as well as in the slip rings in the design of type selection to accurately

For mechanical design engineer for, the most painful way of mechanical structure type selection, only by understanding the slipping the mechanical theory, to the correct selection, so how to correctly and reasonably slipping parts selection? First of all we slip ring from with principle speaking, is to make the role with slipping the static circle and the rotating slipping circle respectively with the installation parts of the static part (usually is a drag) and the rotating part (usually axis) consolidation in together, so as to realize the rotating state in load and limit movement relative to the system still system the basic task of the position. Slipping the important parts are machinery, also can say is the mechanical joints, and we human beings, if no joint that's not good, if not the man joins a paralyzed, what function?

It is no use, mechanical also is same, not the slip rings, mechanical use don't get up and so machinery is cannot leave the slipping, leaving the slip rings cannot live on, so scrap. Use rotation of all kinds of mechanical device, drags instruments such as market strictly on performance requirements for the conditions. The required performance also becoming more diverse. In order to numerous from structure, size, choose the most suitable slip rings, need from all kinds of perspective. In the choice of slipping, general, considered as a shaft of slipping arrangement, installation, remove the ease of degree, slipping the space, allowed by the size and the marketability slip rings, roughly decided to slip rings structure. The use of sloping method is very complex, some rotating slipping needs to cooperate the use is, the general technical personnel to know knowledge, we generally people must be don't know, we here is to introduce some of this rotation with slip-ring use and requirements, but also to you later familiar with revolving joint know rbi basis.

On the shaft and drag a, rotating slipping the requirements in the radial, axial and tangent direction and so on three directions fixed its position. Radial and cut the positioning of slipping through to the contractor in a tight fit realizes, axial location only in a few instances the tight cooperation; general use of the axial spacing parts, such as cover and black circle will axial position limit in clearance range. Second, the comparative study of the use of slipping side of all kinds of mechanical design life and all the different slipping durable limits, side slip rings to size. In the choice of slipping, often only consider slipping tends the fatigue life, grease of aging by happened life, wears away. Grease noise also needs to study fully. However, according to different purposes, the necessary choice of the precision, clearance, keeps the framing structure, grease, etc requirements, particularly of slipping design. Fixed lateral spreads ring, need to choose available in axial rotation surface move (such as via slipping) or to assembly face mobile (such as centripetal ball slipping) slip rings. In short axis, fixed side and freedom without any other side, using only one-way fixed axis move to slip rings (such as wind power slipping). But, the choice and no certain order through bore slip rings , rules, priority should be considered for slipping the required, is conditions, performance, most associated issues, particularly the act. Usually, the shaft is in two slipping radial and axial for support, at this time, will drag on one side of the fixed lateral spreads called ring, it bears radial and axial two kind of load, the fixed axis and slipping between axial box relative displacement effect. The other side will be called free side, only bear radial load, axial can move relative to solve because the temperature change and produce shaft expansion of the topic and the installation slipping interval error. Only very sure of selection, can be rapidly complete mechanical structure design task, so before in design, we as far as possible know more about slipping attention of selection.

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