【正文】 options. Second, efficient tool To improve production efficiency, doublesided, four and more than clamping fixture of more and more products. Work piece in order to reduce the installation time, all kinds of autocentering clamping, precision flat clamp, clamping levers, cam clamp, such as pneumatic and hydraulic clamping, rapid clamping new features constantly. New type of electronically controlled permanent magnet fixture, step up and release the work piece only 1~2 seconds, simplifying the fixture structure for the machine to carry out stage, faceted and processing to create the condition. American JERGENS the pany39。 三、模塊 組合夾具元件模塊化是實(shí)現(xiàn)組合化的基礎(chǔ)。由于杠桿機(jī)構(gòu)不能自鎖，所以這種機(jī)構(gòu)自鎖要靠氣壓或其它機(jī)構(gòu)。為克服這一缺點(diǎn)，可采用快速夾緊機(jī)構(gòu)。夾緊裝置的復(fù)雜程度應(yīng)與生產(chǎn)綱領(lǐng)相適應(yīng)，在保證生產(chǎn)效率的前提下，其結(jié)構(gòu)應(yīng)力求簡單，便于制造和維修?；舴蚵鼑?籍美國原文出處Cengage Learning譯文： 在機(jī)械加工過程中，工件受到切削力、離心力、慣性力等的作用，為了保證在這些外力作用下，工件仍能在夾具中保持已由定位元件確定的加工位置，而不致發(fā)生振動或位移、夾具結(jié)構(gòu)中應(yīng)設(shè)置夾緊裝置將工件可靠夾牢。如各種螺釘壓板等。由于它結(jié)構(gòu)簡單、夾緊可靠、通用性好，而且由于螺旋升角小，螺旋夾緊機(jī)構(gòu)的自鎖性能好，夾緊力和夾緊行程都較大，是手動夾具上用得最多的一種夾緊機(jī)構(gòu)。V 形鉗口可按工件不同形狀進(jìn)行更換。為了適應(yīng)不同行業(yè)的需求和經(jīng)濟(jì)性，夾具有不同的型號以及不同檔次的精度標(biāo)準(zhǔn)供選擇。. Using pneumatic or hydraulic device drivers do not need the selflocking oblique wedge it is desirable to a =15 176。采用模塊、組合式的夾具系統(tǒng)，一次性投資比較大，只有夾具系統(tǒng)的可重組性、可重構(gòu)性及可擴(kuò)展性功能強(qiáng)，應(yīng)用范圍廣，通用性好，夾具利用率高，收回投資快，才能體現(xiàn)出經(jīng)濟(jì)性好。 夾具是機(jī)械加工中不可缺少的部件，在機(jī)床技術(shù)向高速、高效、精密、復(fù)合、智能、環(huán)保方向發(fā)展的帶動下，夾具技術(shù)正朝著高精、高效、模塊、組合、通用、經(jīng)濟(jì)方向發(fā)展。 定心夾緊機(jī)構(gòu)具有定心和夾緊兩種功能，如臥式車床的三爪自定心卡盤即為最常用的典型實(shí)例。 即： 為保證自鎖可靠，手動夾緊機(jī)構(gòu)一般取。如手柄、螺母及用來連接氣缸活塞桿的機(jī)構(gòu)等。常用的動力裝置有：氣動裝置、液壓裝置、電動裝置、電磁裝置、氣—液聯(lián)動裝置和真空裝置等。在眾多的夾緊機(jī)構(gòu)中以斜楔、螺旋、偏心以及由它們組合而成的夾緊機(jī)構(gòu)應(yīng)用最為普遍。 偏心夾緊加工操作方便、夾緊迅速，缺點(diǎn)是夾緊力和夾緊行程都小。 彈性定心夾緊機(jī)構(gòu)的結(jié)構(gòu)簡單、體積小、操作方便迅速，因而應(yīng)用十分廣泛。應(yīng)用CAD技術(shù)，可建立元件庫、典型夾具庫、標(biāo)準(zhǔn)和用戶使用檔案庫，進(jìn)行夾具優(yōu)化設(shè)計(jì)，為用戶三維實(shí)體組裝夾具。 the other is the use of thinwalled elastic element force even after the elastic deformation (contraction or expansion), to achieve centering clamping, such as a spring clip drum, diaphragm chuck, bellows units, such as liquid plastic. 1. Centering clamping body spiral Rotary screw thread at both ends to the contrary, the same pitch. When it spins, the two Vshaped gag against the constant movement in order to achieve the centering of the work piece clamping or release. Vshaped work pieces of different shapes can shut up the replacement. Centering clamping bodies such features are: simple structure the work trip and general good but the centering accuracy is not high mainly suitable for rough or semifinished tour of the needs of large and less demanding precision centering occasions. 2. Leveraged institutions centering clamping Threejaw selfcentering leveraged trading cards, sleeve for axial movement the circle are three fabric hook lever will rotate around the axis, the three struck the slider along the radial movement of the cards in order to promote its claws the work piece centering and clamping or release. This centering clamping rigid body, and move fast, by force multiplier, and the work trip is also characterized by relatively large, but its relatively low precision centering. Generally about it is mainly used for rough work. Since the body can not selflocking lever, so that organizations rely on selflocking air pressure or other agencies. 3. Ce