鍵是一種標(biāo)準(zhǔn)件，通常用于聯(lián)接軸與軸上旋轉(zhuǎn)零件與擺動(dòng)零件，起周向固定零件的作用以傳遞旋轉(zhuǎn)運(yùn)動(dòng)和扭矩，楔鍵還可以起單向軸向固定零件。而導(dǎo)鍵、滑鍵、花鍵還可用作軸上移動(dòng)的導(dǎo)向裝置。 根據(jù)鍵的結(jié)構(gòu)形式，鍵聯(lián)接可分為平鍵聯(lián)接、半圓鍵聯(lián)接、楔鍵聯(lián)接和切向鍵聯(lián)接等幾類。

The key is a standard part, which is usually used to connect the rotating parts and swing parts of the shaft and the axle to move the fixed parts to transmit rotary motion and torque, and the wedge key can also play a one-way axial fixation part. The guide, slippery key and the spline can also be used as a guiding device for moving on the axis. According to the structure of the key, key joins can be divided into a flat bond, a semicircle bond, a wedge bond and a tangent bond.

楔鍵聯(lián)接：鍵的上下兩表面是工作面，鍵的上表面和輪轂鍵槽底面均有1∶100的斜度，裝配后，鍵即楔緊在軸和輪轂的鍵槽里，工作表面產(chǎn)生很大預(yù)緊力。

Wedge key connection: the upper and lower two surfaces of the key are the working faces. The upper surface of the key and the bottom of the hub keyway have 1 to 100 slope. After assembly, the key is wedged tightly in the keyway of the shaft and hub, and the working surface has a large pre tightening force.

銷聯(lián)接一般用來(lái)傳遞不大的載荷或作安全裝置；另一作用是起定位作用。常與帶孔螺栓和六角開(kāi)槽螺母配對(duì)使用，把銷插入螺栓的孔與螺母的槽中，以防螺母松脫。銷按形狀分為圓柱銷、圓錐銷和異形銷三類。

Pin connecti are generally used to transfer small loads or safety devices; the other is to play the role of . It is often paired with hole bolts and six angle slotting nuts to insert the pin into the hole of the bolt and the slot in the nut so as to prevent the loosening of the nut. The pin is divided into three types: cylindrical pin, conical pin and special pin.

裝夾過(guò)程及工作原理。鉗臺(tái)底座在設(shè)備工作臺(tái)上固定好后，先調(diào)整可調(diào)鉗口座在鉗體底座上的位置，確保裝夾行程內(nèi)能有效對(duì)工件進(jìn)行裝夾；再將待加工產(chǎn)品置于柔性虎鉗的兩個(gè)鉗口之間。

Clamping process and working principle. When the clamping platform is fixed on the equipment worktable, the  of the adjustable jaw seat on the base of the clamp body is adjusted first, so as to ensure that the workpiece can be clamped effectively in the clamping stroke, and then the processed product is placed between the two jaw openings of the flexible vice.