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擺線輪是(shi)和漸開線輪齒形不同(tong)的一種(zhong)齒輪，它的結(jie)構特點(dian)是(shi)：結(jie)構緊(jin)湊(cou)、體(ti)積小、速比(bi)大。
擺線輪的輸出(chu)軸結構設計(ji)：
1、主軸(zhou)(zhou)曲(qu)柄。輸入軸(zhou)(zhou)為直(zhi)軸(zhou)(zhou)，通過兩個(ge)(ge)滾動(dong)軸(zhou)(zhou)承以兩支點支承在減速器箱體上(shang)(shang)，該直(zhi)軸(zhou)(zhou)上(shang)(shang)裝(zhuang)有相(xiang)(xiang)位差180度的雙偏心套，構(gou)成兩個(ge)(ge)相(xiang)(xiang)位差180度的主動(dong)曲(qu)柄，他們各裝(zhuang)有一個(ge)(ge)轉臂軸(zhou)(zhou)承并分別與兩個(ge)(ge)相(xiang)(xiang)位差180度的連桿(gan)連接。
2、連(lian)(lian)(lian)(lian)(lian)桿(gan)。兩個相(xiang)(xiang)位差180度(du)的(de)連(lian)(lian)(lian)(lian)(lian)桿(gan)的(de)另一端通過轉臂(bei)軸承與從(cong)(cong)動曲(qu)(qu)柄相(xiang)(xiang)連(lian)(lian)(lian)(lian)(lian)，從(cong)(cong)動曲(qu)(qu)柄和主軸曲(qu)(qu)柄長度(du)相(xiang)(xiang)同，并同樣用(yong)軸承支承于減速器(qi)箱體上，主、從(cong)(cong)動曲(qu)(qu)柄支點(dian)間(jian)距離(li)和連(lian)(lian)(lian)(lian)(lian)桿(gan)長度(du)相(xiang)(xiang)同，在傳動機構中(zhong)，連(lian)(lian)(lian)(lian)(lian)桿(gan)中(zhong)部(bu)帶有針輪(lun)，形(xing)如環板，故在具(ju)體結構中(zhong)，連(lian)(lian)(lian)(lian)(lian)桿(gan)也就是帶有針輪(lun)的(de)環板。
3、從動(dong)曲(qu)柄(bing)(bing)(bing)。其結構和主(zhu)動(dong)曲(qu)柄(bing)(bing)(bing)基本上相同(tong)，由于(yu)在平行四(si)桿機構通(tong)過死點位置時，從動(dong)曲(qu)柄(bing)(bing)(bing)曲(qu)柄(bing)(bing)(bing)可以與主(zhu)動(dong)曲(qu)柄(bing)(bing)(bing)同(tong)向回轉(zhuan)(zhuan)，也可以反向回轉(zhuan)(zhuan)，是一不穩定(ding)位置，所以為從動(dong)曲(qu)柄(bing)(bing)(bing)能穩定(ding)地(di)與主(zhu)軸(zhou)曲(qu)柄(bing)(bing)(bing)同(tong)向回轉(zhuan)(zhuan)， 另加約束。
4、擺線輪。一個較寬的擺線輪，用鍵固定在輸出軸上，它同時與分別裝于兩個相位差180度的連桿中部的針輪相嚙合。擺線輪的齒形采用我們經過優化修形的新齒形，可以與針輪達到理想的共軛多齒同時嚙合，不僅傳遞的轉矩大，而且傳動平穩，是一種的減速機配件產品。
5、輸(shu)出(chu)軸(zhou)。固(gu)裝擺(bai)線輪的輸(shu)出(chu)軸(zhou)，為兩支(zhi)點簡支(zhi)在箱體(ti)上。與 采(cai)用特定輸(shu)出(chu)機構(gou)的通(tong)用擺(bai)線針輪行星(xing)減(jian)速器的懸臂輸(shu)出(chu)軸(zhou)相比，不(bu)僅(jin)結構(gou)簡單，而且剛性要好得多。
6、箱殼。由(you)箱體和(he)(he)側(ce)端蓋兩部分組成。其設計除了要(yao)(yao)考(kao)慮地支承(cheng)主、從(cong)(cong)動(dong)曲柄(bing)及輸出軸，便于制造和(he)(he)安裝拆卸，潤滑密封外，還(huan)要(yao)(yao)地裝于每個環(huan)板(ban)(ban)(ban)上(shang)(shang)一圈針(zhen)孔(kong)銷(xiao)孔(kong)不能沿軸向(xiang)脫出。為此，在箱體和(he)(he)側(ce)蓋上(shang)(shang)均有一圈環(huan)形凸(tu)臺，他們與環(huan)板(ban)(ban)(ban)間(jian)只留(liu)有少量側(ce)隙，即能允(yun)許(xu)環(huan)板(ban)(ban)(ban)自(zi)由(you)的平動(dong)，而(er)又能針(zhen)齒銷(xiao)不會從(cong)(cong)環(huan)板(ban)(ban)(ban)上(shang)(shang)針(zhen)銷(xiao)孔(kong)內(nei)沿軸向(xiang)脫出。
7、同步帶(dai)。為了使雙曲柄機構順(shun)利通(tong)過(guo)死點，可以采用的(de)措施很多， 簡單易(yi)行的(de)方法是同步帶(dai)聯動(dong)雙曲柄。
8、漸開線為(wei)齒(chi)形的(de)三(san)環(huan)(huan)傳(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)，可(ke)使雙(shuang)曲(qu)柄(bing)(bing)機構順利通過死點(dian)(dian)，但在(zai)任一個被(bei)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)曲(qu)柄(bing)(bing)通過死點(dian)(dian)時(shi)(shi)(shi)仍會產生(sheng)(sheng)明顯的(de)瞬時(shi)(shi)(shi)沖(chong)擊振動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)，而且(qie)三(san)環(huan)(huan)傳(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)不可(ke)能達到動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)平(ping)衡，在(zai)雙(shuang)曲(qu)柄(bing)(bing)環(huan)(huan)板式(shi)(shi)(shi)針(zhen)擺(bai)線行(xing)星(xing)(xing)傳(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)中(zhong)為(wei)了使雙(shuang)曲(qu)柄(bing)(bing)機械(xie)(xie)省力平(ping)衡地通過死點(dian)(dian)，在(zai)中(zhong)、小輸出轉(zhuan)矩時(shi)(shi)(shi)，可(ke)采用(yong)(yong)同(tong)步連帶聯(lian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)雙(shuang)曲(qu)柄(bing)(bing)的(de)雙(shuang)環(huan)(huan)板式(shi)(shi)(shi)結構或3個齒(chi)輪(lun)聯(lian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)雙(shuang)曲(qu)柄(bing)(bing)的(de)雙(shuang)環(huan)(huan)板式(shi)(shi)(shi)。針(zhen)擺(bai)線行(xing)星(xing)(xing)減(jian)速(su)(su)(su)器在(zai)大的(de)輸出轉(zhuan)矩時(shi)(shi)(shi)，可(ke)采用(yong)(yong)雙(shuang)電(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)雙(shuang)曲(qu)柄(bing)(bing)的(de)四環(huan)(huan)板式(shi)(shi)(shi)針(zhen)擺(bai)線行(xing)星(xing)(xing)減(jian)速(su)(su)(su)器。可(ke)以在(zai)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)平(ping)衡狀態下平(ping)穩運(yun)轉(zhuan)，這(zhe)時(shi)(shi)(shi)兩(liang)個曲(qu)柄(bing)(bing)用(yong)(yong)機械(xie)(xie)性能相同(tong)的(de)兩(liang)個電(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)，依靠(kao)電(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機的(de)轉(zhuan)差(cha)特性。載(zai)(zai)荷(he)大時(shi)(shi)(shi)轉(zhuan)速(su)(su)(su)下降，載(zai)(zai)荷(he)小時(shi)(shi)(shi)轉(zhuan)速(su)(su)(su)上(shang)升規律，使通過連桿(gan)(gan)上(shang)的(de)針(zhen)輪(lun)帶動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)同(tong)一擺(bai)線輪(lun)的(de)兩(liang)臺電(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機自動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)保(bao)持轉(zhuan)速(su)(su)(su)與(yu)功率(lv)均(jun)載(zai)(zai)。此外，還有用(yong)(yong)3個齒(chi)輪(lun)聯(lian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)雙(shuang)曲(qu)柄(bing)(bing)的(de)四環(huan)(huan)板式(shi)(shi)(shi)針(zhen)擺(bai)行(xing)星(xing)(xing)減(jian)速(su)(su)(su)器。上(shang)述(shu)傳(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)方式(shi)(shi)(shi)，都不存在(zai)主動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)曲(qu)柄(bing)(bing)通過連桿(gan)(gan)推動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)被(bei)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)曲(qu)柄(bing)(bing)過死點(dian)(dian)因而產生(sheng)(sheng)瞬間(jian)沖(chong)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)問題，而且(qie)雙(shuang)曲(qu)柄(bing)(bing)四環(huan)(huan)板式(shi)(shi)(shi)針(zhen)擺(bai)行(xing)星(xing)(xing)減(jian)速(su)(su)(su)器可(ke)以實現在(zai)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)態平(ping)衡狀態下運(yun)轉(zhuan)，傳(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)特別平(ping)衡。
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