联轴器类型:常用的精密联轴器有：弹性联轴器，膜片联轴器，波纹管联轴器，滑块联轴器，梅花联轴器，刚性联轴器。

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联轴器特点1、弹性联轴器(1)一体成型的金属弹性体；(2)零回转间隙、可同步运转；(3)弹性作用补偿径向、角向和轴向偏差；
(4)高扭矩刚性和卓越的灵敏度；(5)顺时针和逆时针回转特性完全相同；(6)免维护、抗油和耐腐蚀性；
(7)有铝合金和不锈钢材料供选择；(8)固定方式主要有顶丝和夹紧两种。
2、膜片联轴器(1)高刚性、高转矩、低惯性；(2)采用环形或方形弹性不锈刚片变形；(3)大扭矩承载，高扭矩刚性和卓越的灵敏度；
(4)零回转间隙、顺时针和逆时针回转特性相同；(5)免维护、超强抗油和耐腐蚀性；
(6)双不锈钢膜片可补偿径向、角向、轴向偏差，单膜片则不能补偿径向偏差。
3、波纹管联轴器(1)无齿隙、扭向刚性、连接可靠、耐腐蚀性、耐高温；(2)免维护、超强抗油，波纹管形结构补偿径向、角向和轴向偏差，偏差存在的情况下也可保持等速作动；(3)顺时针和逆进针回转特性完全相同；(4)波纹管材质有磷青铜和不锈钢供选择；
(5)可适合用于精度和稳定性要求较高的系统。
4、滑块联轴器(1)无齿隙的连接，用于小扭矩的测量传动结构简单；(2)使用方便、容易安装、节省时间、尺寸范围广、转动惯量小，便于目测检查；(3)抗油腐蚀，可电气绝缘，可供不同材料的滑块弹性体选择；
(4)轴套和中间件之间的滑动能容许大径向和角向偏差，中间件的特殊凸点设计产生支撑的作用，容许较大的角度偏差，不产生弯曲力矩，侃轴心负荷降至最低。
5、梅花联轴器(1)紧凑型、无齿隙，提供三种不同硬度弹性体；(2)可吸收振动，补偿径向和角向偏差；(3)结构简单、方便维修、便于检查；
(4)免维护、抗油及电气绝缘、工作温度20℃-60℃；(5)梅花弹性体有四瓣、六瓣、八瓣和十瓣；(6)固定方式有顶丝，夹紧，键槽固定。
6、刚性联轴器(1)重量轻，超低惯性和高灵敏度；(2)免维护，超强抗油和耐腐蚀性；(3)无法容许偏心，使用时应让轴尽量外露；
(4)主体材质可选铝合金/不锈钢；(5)固定方式有夹紧、顶丝固定。
联轴器是用来联接不同机构中的两根轴（主动轴和从动轴）使之共同旋转以传递扭矩的机械零件。在高速重载的动力传动中，有些联轴器还有缓冲、减振和提高轴系动态性能的作用。
联轴器主要通过预紧来达到无空回传递扭矩，轴连接无空回，好的柔韧性和抗冲击性，允许各个方向的偏移，即使在高速下，运动也平稳，能承受大的工作量， 安装操作简单方便，免维护，不需停工期，能承受高温环境，小尺寸，小惯量，电绝缘，性价比高，额定扭矩 0.10-650 Nm 。

联轴器由两半部分组成，分别与主动轴和从动轴联接。一般动力机大都借助于联轴器与工作机相联接。
联轴器种类繁多，按照被联接两轴的相对位置和位置的变动情况，可以分为：
①固定式联轴器。主要用于两轴要求严格对中并在工作中不发生相对位移的地方，结构一般较简单，容易制造，且两轴瞬时转速相同，主要有凸缘联轴器、套筒联轴器、夹壳联轴器等。
②可移式联轴器。主要用于两轴有偏斜或在工作中有相对位移的地方，根据补偿位移的方法又可分为刚性可移式联轴器和弹性可移式联轴器。
刚性可移式联轴器利用联轴器工作零件间构成的动联接具有某一方向或几个方向的活动度来补偿，如牙嵌联轴器（允许轴向位移）、十字沟槽联轴器（用来联接平行位移或角位移很小的两根轴）、万向联轴器（用于两轴有较大偏斜角或在工作中有较大角位移的地方）、齿轮联轴器（允许综合位移）、链条联轴器（允许有径向位移）等。
弹性可移式联轴器（简称弹性联轴器）利用弹性元件的弹性变形来补偿两轴的偏斜和位移，同时弹性元件也具有缓冲和减振性能，如蛇形弹簧联轴器、径向多层板簧联轴器、弹性圈栓销联轴器、尼龙栓销联轴器、橡胶套筒联轴器等。

Coupling type

Commonly used precision couplings are: the elastic coupling, diaphragm couplings, bellows couplings, oldham coupling, plum coupling, rigid coupling.

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Coupling characteristics

1, the elastic coupling

(1) metal unibody elastomer;

(2) rotary zero clearance, synchronous operation;

(3) the elastic function to compensate the radial, angular and axial deviation;

(4) high torque stiffness and excellent sensitivity;

(5) exactly the same clockwise and counterclockwise rotary characteristics;

(6) is a maintenance free, oil resistance, and corrosion resistance;

(7) of aluminum alloy and stainless steel materials to choose from;

(8) fixed way mainly covered yarn and clamping the two.

2, diaphragm coupling

(1) high rigidity, high torque and low inertia;

(2) adopting the circular or square stainless just slice deformation;

(3) high torque load, high torque stiffness and excellent sensitivity;

(4) zero rotation clearance, clockwise and counterclockwise rotary characteristics;

(5) is a maintenance free, super oil resistance and corrosion resistance;

(6) double stainless steel diaphragm can compensate radial, angular and axial deviation, single diaphragm cannot compensate radial deviation.

3, bellows couplings

(1) no backlash, twist to the rigid, reliable connection, corrosion resistance, high temperature resistant;

(2) is a maintenance free, strong resistance to oil, corrugated tube structure of the compensation Angle to the radial, and axial deviation, deviation in the presence of also can keep the constant actuation;

(3) and inverse clockwise needle into rotary characteristics are identical;

(4) the material is phosphor bronze and stainless steel bellows for choice;

(5) can be used for the high system accuracy and stability requirements.

4, the oldham coupling

(1) no backlash connection, for small torque measuring transmission structure is simple;

(2) easy to use, easy to install, save time, wide range of size, moment of inertia of small, easy to visual inspection;

(3) oil resistance, electric insulation, for different slider elastomer material to choose;

Slide (4) between the bushing and middleware can allow large radial and angular deviation, special protruding point design middleware supporting role, allowing larger angular deviation, does not produce bending moment, kan axial load to a minimum.

5, plum coupling

(1) compact, no backlash, provides three different hardness of the elastomer;

(2) can absorb vibration, to compensate the radial and angular deviation;

(3) simple structure, convenient maintenance, easy to check;

(4) is a maintenance free, oil resistance and electrical insulation, the working temperature of 20 ℃ to 60 ℃;

(5) the plum blossom four disc elastomer, six petals, eight disc and disc;

(6) fixed way covered wire, clamping, keyway is fixed.

6, rigid couplings

(1) light weight, low inertia and high sensitivity;

(2) is a maintenance free, strong oil resistance and corrosion resistance;

(3) not allow eccentric, when using, should let shaft exposed as far as possible;

(4) optional subject material aluminum alloy/stainless steel;

(5) fixed way clamp, with the top wire fixation.

Coupling is used to join different organizations in the two axis (driving shaft and driven shaft) to rotate together to transfer torque of mechanical parts. The overloaded power transmission at high speed, some coupling still buffering, vibration and enhance the role of shaft system dynamic performance.

Coupling by preloaded to reach the sky back to the main torque and shaft connection has no empty return, good flexibility and impact resistance, allowing all directions of offset, even at high speed, smooth movement, can withstand the big workload, operation simple and convenient installation, free maintenance, do not need downtime, can withstand the high temperature environment, small size, small inertia, electrical insulation, high cost performance, the rated torque of 0.10-650 - Nm.

coupling

Coupling consists of two parts, each with the driving shaft and driven shaft connection. Most general engine by means of coupling machine connected with work.

Coupling variety, according to the linked two axis of the relative position and location changes, can be divided into:

1) type coupling. Is mainly used in the two axis in a strict and does not occur relative displacement in the work place, usually simpler in structure, easy manufacture, and two axis instantaneous speed is the same, mainly has coupling, sleeve coupling, flange coupling clamp shell, etc.

(2) portable coupling. Mainly used in the two axis deflection or relative displacement in the work place, according to the method to compensate the displacement and can be divided into movable type coupling rigid and elastic movable type coupling.

Rigid coupling using movable type between the working parts of the coupling structure of fixed connection with a certain direction or some activity degree of direction to compensate for, such as tooth coupling grooves () allows the axial displacement, cross coupling (used to join two axis parallel displacement or angular displacement is very small), universal shaft coupling (for two axis have a larger of declination or at work have a larger angular displacement), gear coupling (allowing integrated displacement), chain couplings (radial displacement is allowed).

Elastic portable coupling (hereinafter referred to as elastic coupling) USES the elastic deformation of elastic element to compensate for the two shaft deflection and displacement of elastic element at the same time also has the buffering and damping performance, such as snake-like spring coupling, radial multi-layer plate spring coupling, flexible pin coupling sleeve, nylon pin coupling, rubber coupling, etc.