与平键联接比较，花键联接在强度、工艺和使用方面有下列特点：在轴上与毂孔上直接而均匀地制出较多的齿与槽，故联接受力较为均匀；因槽较浅，齿根处应力集中较小，轴与毂的强度削弱较少。

Compared with the flat bond connection， the spline connection has the following characteristics in strength， process and use.More teeth and grooves are made directly and evenly on the shaft and hub hole， so the joint force is more uniform.

Because of the shallow groove，圣霖联接机生产， the stress at the root of the tooth is small， and the strength of the shaft and hub is weakened less.

机用虎钳结构缺点及使用中的隐患。机用虎钳有结构简单、夹紧力大、操作和维护方便等特点。但由于其必须具有广泛的适用性和操作的便捷性，圣霖联接机，其螺母与丝杆之间、活动座与虎钳体之间存在着较大的配合间隙，导致在装夹一些加工精度要求较高的产品时难以达到要求。

The structural shortcomings of the machine vise and the hidden danger in the use. The machine tool has the characteristics of simple structure， large clamping force， easy operation and maintenance. But because of its wide applicability and convenient operation，圣霖联接机购买， there is a large gap between the nut and the screw rod，圣霖联接机多少钱， the movable seat and the vice body， which results in the difficulty of meeting some requirements when clamping some products with high machining accuracy.

机用虎钳的结构及原理。机用虎钳是机械加工中常用的装夹机构，其结构如图1所示。其主要工作原理：转动方头带动丝杠，在螺母（通过紧固螺钉固定在虎钳体上）的作用下，做螺旋运动的丝杠带动与之联接的活动座沿丝杠轴线方向来回移动。

The structure and principle of machine vise. Machine vise is a common clamping mechanism in mechanical processing. Its structure is shown in Figure 1. The main principle: rotation of the lead screw nut in the square， (fixed in the vise body through a fastening screw) under the action of moving spirally driven screw connected with the movable seat to move back and forth along the screw axis.

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