【菜鳥(niǎo)成長(zhǎng)記】20歲后，我在機(jī)械的每一天

黑森林的鹿

【20160322】The Four-Bar Mechanism
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The simplest and most common linkage is the four-barlinkage. It is a combination offour links, one being designated as the frame and connected by four pin joints.Because it is encountered so often, further exploration is in order.
四桿機(jī)構(gòu)極其常用，所以多作一點(diǎn)說(shuō)明。
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The mechanism for an automotive rear-window wiper system is shown in Figure1.33a. The kinematic diagram is shown in Figure 1.33b. Notice that this is afour-bar mechanism because it is comprised of four links connected byfour pin joints and one link is unable to move.
四桿機(jī)構(gòu)判定條件：四個(gè)構(gòu)件組成、四個(gè)銷釘連接、其一不可動(dòng)。



5 e8 E4 n1 @4 YBecause the four-bar mechanism has onedegree of freedom, it is constrained or fullyoperated with one driver. The wiper system in Figure 1.33 is activated by asingle DC electric motor.
四桿機(jī)構(gòu)自由度為1。

$ E3 f, l( S9 g) j. gOf course, the link that is unable to move is referred to as the frame. Typically, the pivoted link that is connected to the driver or power source is called the inputlink. The other pivoted link thatis attached to the frame is designated the outputlink or follower. The coupler or connecting arm “couples” the motion of the inputlink to the output link.

術(shù)語(yǔ)中英對(duì)照：
0 D2 V% ]4 l* `9 t3 y' f1 f機(jī)架——frame
主動(dòng)桿——input link
連桿——coupler / connecting arm
) L: Q) r% Y; v( Z$ O從動(dòng)桿——output link / follower

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xuexp

開(kāi)學(xué)第一件事應(yīng)該是轉(zhuǎn)專業(yè)

however1241

however1241 發(fā)表于 2016-3-22 09:03
# b2 A1 u! I% }+ D2 J& X謝謝回復(fù)

共勉
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@忘川

機(jī)械行業(yè)不好干，加油吧

daretobe

新手學(xué)習(xí)

黑森林的鹿

【20160323】Grashof 'sCriterion
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& P5 W) D- U7 m3 _The following nomenclature is used todescribe the length of the four links.
/ S! D5 h9 T" i! R9 o9 JGrashof定理，用于描述四桿機(jī)構(gòu)。

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The different categories are illustratedin Figure 1.34 and described in the following sections.
" e, o  Z9 g/ {/ u如圖為不同種類的四桿機(jī)構(gòu)。
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. L4 p3 m9 x. f7 X6 s& n主要為：
: l9 ?( ?' n7 |, U# Q0 l: y8 P雙曲柄機(jī)構(gòu)（Double Crank）
" D2 l) f  u8 m: G" u' U曲柄搖桿機(jī)構(gòu)（Crank-Rocker）
雙搖桿機(jī)構(gòu)（Double Rocker）
/ \( {: n' C. V! i4 j平移機(jī)構(gòu)（這怎翻譯）（Change PointMechanism）
三搖桿機(jī)構(gòu)（Triple Rocker）
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黑森林的鹿

xuexp 發(fā)表于 2016-3-23 03:01
8 v. l& s$ d( C( U8 P$ r, }開(kāi)學(xué)第一件事應(yīng)該是轉(zhuǎn)專業(yè)

. f1 C1 A( K. R$ j# R這……為何如此不看好呢

黑森林的鹿

@忘川 發(fā)表于 2016-3-23 09:54
9 f$ w% j. B  [8 n- b5 z6 {機(jī)械行業(yè)不好干，加油吧

恩恩，已有心理準(zhǔn)備，會(huì)好好加油的，謝謝關(guān)注與鼓勵(lì)！

黑森林的鹿

daretobe 發(fā)表于 2016-3-23 13:46
' x6 D2 s" X( q0 i7 j新手學(xué)習(xí)

: W1 x. W; ~+ q是的，新手入門階段，要學(xué)的很多很多！會(huì)好好加油的！
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風(fēng)雪關(guān)懷

樓主有志氣，佩服佩服，加油