TW200927365A - Switchable rotation drive device - Google Patents

Switchable rotation drive device Download PDF

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Publication number
TW200927365A
TW200927365A TW097141358A TW97141358A TW200927365A TW 200927365 A TW200927365 A TW 200927365A TW 097141358 A TW097141358 A TW 097141358A TW 97141358 A TW97141358 A TW 97141358A TW 200927365 A TW200927365 A TW 200927365A
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TW
Taiwan
Prior art keywords
spline
planetary gear
output shaft
hollow rotor
coupling sleeve
Prior art date
Application number
TW097141358A
Other languages
English (en)
Inventor
Norio Shirokoshi
Original Assignee
Harmonic Ad Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Harmonic Ad Inc filed Critical Harmonic Ad Inc
Publication of TW200927365A publication Critical patent/TW200927365A/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02Driving main working members
    • B23Q5/04Driving main working members rotary shafts, e.g. working-spindles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02Driving main working members
    • B23Q5/04Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/12Mechanical drives with means for varying the speed ratio
    • B23Q5/14Mechanical drives with means for varying the speed ratio step-by-step
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02Driving main working members
    • B23Q5/04Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/12Mechanical drives with means for varying the speed ratio
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H3/00Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/46Gearings having only two central gears, connected by orbital gears
    • F16H3/48Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears
    • F16H3/52Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears comprising orbital spur gears
    • F16H3/54Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears comprising orbital spur gears one of the central gears being internally toothed and the other externally toothed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00Driving or feeding mechanisms; Control arrangements therefor
    • B23Q2005/005Driving or feeding mechanisms with a low and a high speed mode

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structure Of Transmissions (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Lock And Its Accessories (AREA)
  • Retarders (AREA)

Description

200927365 九、發明說明 【發明所屬之技術領域】 本發明係關於可在將輸出軸直接連結於馬達的高速旋 轉模式和經由減速機構的低速旋轉模式之間進行切換的切 換式旋轉驅動裝置。 【先前技術】 ^ 爲了將輸出軸的旋轉減速以增加轉矩可使用減速機, 又在要讓輸出軸高速旋轉以將驅動對象物快速進給的情況 等,是使用切換機構,而將馬達的旋轉直接傳遞至輸出軸 。就具備切換機構的旋轉驅動裝置而言,已知有專利文獻 1所揭示的工作機械用主軸驅動裝置。 在專利文獻1揭示的工作機械用主軸驅動裝置,是讓 含有減速用行星齒輪機構的傳動機構單元沿主軸的中心軸 線方向滑動,以進行主軸之高速旋轉模式和低速旋轉模式 φ 的切換。亦即,在從主軸馬達的中空轉子後端向後突出的 主軸的外周,以可滑動的方式配置傳動機構單元。若將傳 動機構單元滑動到前方的位置,主軸會直接連結於中空轉 子而成爲高速旋轉狀態。若將傳動機構單元滑動到後方的 位置,該傳動機構單元的行星齒輪會嚙合於和中空轉子一 體旋轉的太陽齒輪’且該傳動機構單元的行星齒輪會連結 於從中空轉子的後端向後突出的主軸的後端部,藉此將主 軸切換成經由行星齒輪機構進行低速旋轉的狀態。 [專利文獻1]曰本特許第3963 5 1 7號公報 200927365 然而,在專利文獻1揭示的切換機構,必須讓含有行 星齒輪機構之傳動機構單元沿著主軸進行前後移動。由於 傳動機構單元整體進行前後移動,爲了確保其移動空間會 造成裝置尺寸增加。 特別是,在從中空轉子的後端突出的主軸的後端部分 的外周,配置可前後滑動的傳動機構單元,又在從該傳動 機構單元的後端向後突出之主軸的後端部分,配置用來連 ❾ 結該主軸和傳動機構單元的行星托架的連結部分。如此般 ,由於傳動機構單元及連結部分是沿軸線方向排列,而造 成軸的長度變長。 再者,由於必須讓含有行星齒輪機構的傳動機構單元 整體進行滑動,滑動用的機構也會變得大型化。 【發明內容】 本發明的課題,是有鑑於上述問題點,而提供一種小 Ο 型且構造緊緻的切換式旋轉驅動裝置。 爲了解決上述課題,本發明的切換式旋轉驅動裝置, 其特徵在於:係具有: 具備中空轉子的馬達、 以旋轉自如的狀態且呈同軸狀貫穿前述中空轉子的中 空部之輸出軸、 用來將前述中空轉子的旋轉減速後傳遞至前述輸出軸 之行星齒輪減速機構、以及 沿著前述輸出軸的外周面可在其中心軸線方向的高速 -5- 200927365 模式位置和低速模式位置之間進行滑動的切換機構; 前述切換機構係具備:在外周面形成前述行星齒輪減 速機構的太陽齒輪之第1連結用套筒 '以及透過軸承以旋 轉自如的狀態且呈同軸狀安裝於該第1連結用套筒之第2 連結用套筒; 在前述高速模式位置,是透過前述第1連結用套筒而 使前述輸出軸及前述中空轉子成爲一體旋轉的直接連結狀 ❹ 態; 在前述低速模式位置,使前述第1連結用套筒及前述 輸出軸的連結被解除,使該第1連結用套筒連結於前述行 星齒輪減速機構的行星齒輪,使前述第2連結用套筒連結 於前述行星齒輪減速機構的減速旋轉輸出要素的行星托架 ,而使前述中空轉子的旋轉透過前述行星齒輪減速機構減 速後傳遞至前述輸出軸。 在本發明’是僅讓構成切換機構的第1連結用套筒和 〇 第2連結用套筒(透過軸承來安裝於第1連結用套筒)滑 動,藉此來將輸出軸在高速旋轉和低速旋轉之間進行切換 。相較於讓行星齒輪減速機構整體滑動的習知的切換機構 ,滑動的部位變小,且滑動所需的空間變少。因此有利於 裝置的小型化、緊緻化。 在此較佳爲,將前述第1連結用套筒以可於前述中心 軸線方向滑動的狀態且呈一體旋轉的方式連結於前述中空 轉子,在前述第1連結用套筒的圓形內周面形成第1花鍵 槽,在前述輸出軸的外周面形成第1花鍵,在前述高速模 -6- 200927365 式位置,使前述第1花鍵槽和前述第1花鍵連結,在前述 低速模式位置,使前述第1花鍵槽和前述第1花鍵的連結 被解除。 又較佳爲,將前述第2連結用套筒以可於前述中心軸 線方向滑動的狀態且呈一體旋轉的方式連結於前述行星托 ' 架,在前述第2連結用套筒的圓形內周面形成第2花鍵槽 ,在前述輸出軸的外周面形成第2花鍵,在前述高速模式 Q 位置,使前述第2花鍵槽和前述第2花鍵的連結被解除, 在前述低速模式位置,使前述第2花鍵槽和前述第2花鍵 連結。 又較佳爲,在使第1花鍵和第1花鍵槽的連結被解除 的同時,進行第2花鍵和第2花鍵槽的連結,如此般,在 切換機構滑動時(切換時),輸出軸未連結在中空轉子側 及行星齒輪減速機構的任一側的狀態就幾乎不會發生。 此外較佳爲,讓前述輸出軸從前述中空轉子的後端向 〇 後突出’在與該後端的後側鄰接的位置,以圍繞前述輸出 軸的狀態配置前述行星齒輪減速機構的前述行星齒輪,在 前述高速模式位置,使前述第1連結用套筒的前述太陽齒 輪藏在前述中空轉子的內部,在前述低速模式位置,使前 述太陽齒輪從前述中空轉子的後端向後露出而嚙合於前述 行星齒輪。藉此’由於切換機構的滑動範圍的一部分可利 用中空轉子的中空部,故能縮短裝置的軸長度。 【實施方式】 200927365 以下參照圖式來說明本發明的切換式旋轉驅動裝置的 實施形態。 第1圖係本發明的實施形態的切換式旋轉驅動裝置以 切換機構的部分爲中心之槪略構造圖。圖中,上半部顯示 切換機構位於高速模式位置的狀態,下半部顯示切換機構 ' 位於低速模式位置的狀態。 切換式旋轉驅動裝置1係包含:具備組裝於筒狀的裝 φ 置殼體2內的中空轉子3之馬達(未圖示)、以旋轉自如 且呈同軸狀態貫穿中空轉子3的中空部而延伸之輸出軸4 、配置於輸出軸4之從中空轉子3的後端3a向後突出的 部分之行星齒輪減速機構5、用來將輸出軸4在高速旋轉 狀態和低速旋轉狀態間進行切換之切換機構6。 例如,將實施形態的切換式旋轉驅動裝置1應用於工 作機械的主軸驅動裝置的情況,是包含:具備組裝於主軸 殼體(2)內的中空轉子(3)之主軸馬達(未圖示)、以 〇 旋轉自如且呈同軸狀態貫穿中空轉子(3)的中空部而延 伸之主軸(4)、配置於主軸(4)之從中空轉子(3)的 後端(3a)向後突出的部分之行星齒輪減速機構(5)、 用來將主軸(4 )在高速旋轉狀態和低速旋轉狀態間進行 切換之切換機構(6)。 切換式旋轉驅動裝置1的切換機構6,可沿輸出軸4 的中心軸線1 a的方向,在前側的高速模式位置6A (第1 圖的上半部所示的狀態)和後側的低速模式位置6B (第1 圖的下半部所示的狀態)之間進行滑動。在高速模式位置 200927365 6A,輸出軸4是透過切換機構6來直接連結於中空轉子3 而進行高速旋轉。在低速模式位置6B,輸出軸4是藉由 切換機構6而透過行星齒輪減速機構5連結於中空轉子3 ,以進行低速旋轉。 切換機構6係具備:第1連結用套筒61、以及透過 軸承63而以旋轉自如的狀態呈同軸狀安裝於該第1連結 用套筒61的後端部之第2連結用套筒62。在第1連結用 U 套筒61的外周面形成行星齒輪減速機構5的太陽齒輪51 。在高速模式位置6A,輸出軸4是透過第1連結用套筒 61而以一體旋轉的狀態直接連結於中空轉子3。在低速模 式位置6B,第1連結用套筒61和輸出軸4的連結被解除 ,而將第1連結用套筒61的太陽齒輪51嚙合於行星齒輪 減速機構5的行星齒輪52’將第2連結用套筒62連結於 行星齒輪減速機構5的減速旋轉輸出要素之行星托架53 ,藉此使中空轉子3的旋轉經由行星齒輪減速機構5減速 φ 後傳遞至輸出軸4。 第1連結用套筒61,是以可沿中心軸線la的方向滑 動的狀態且呈一體旋轉的方式連結於中空轉子3的後端部 內周面部分。在本例,在第1連結用套筒61的外周面之 軸線方向的前半部分,形成太陽齒輪51。在中空轉子3 的後端部內周面部分,形成以可滑動的狀態嚙合於該太陽 齒輪51之連結用內齒31。又在第1連結用套筒61的圓 形內周面形成第1花鍵槽64 a,在輸出軸4之與中空轉子 3的後端部內周面部分相對向的外周面部分形成第1花鍵 -9- 200927365 64b。在高速模式位置6A’第1花鍵槽64a和第1 64b嚙合而形成可一體旋轉的連結狀態。在低速模式 6B,第1花鍵槽64a滑動至離開第1花鍵64b的後方 置,藉此將其等的連結予以解除。 第2連結用套筒62,是以可沿中心軸線1 &的方 動的狀態且呈一體旋轉的方式連結於行星托架53。 例,行星托架5 3,係具備從圓盤狀的後側突緣5 3 a φ 突出的圓筒部5 3 b,該後側突緣5 3 a,係用來支承將 齒輪52支承成可旋轉自如的行星齒輪軸52a。又在 筒部53b的內周面部分形成花鍵53c。在第2連結用 62的外周面形成花鍵槽62a。花鍵53c是以可滑動的 嚙合於花鍵槽62a。 此外,在第2連結用套筒62的圓形內周面形成 花鍵槽65 a,又在輸出軸4的外周面部分形成第2 65b。在前側的高速模式位置6A,第2花鍵槽65a是 〇 第2花鍵65b而位於其前方,藉此使其等的連結解除 低速模式位置6B,第2花鍵槽65a嚙合於第2花鍵 而使其等成爲連結狀態。 在此,行星齒輪減速機構5的行星齒輪52’是 中空轉子3的後端3 a的後側鄰接的位置’以輸出軸 中心隔著等角度間隔來配置。行星齒輪5 2 ’是和形 裝置殼體2的後端部內周面部分的內齒54嚙合。在 機構6位於高速模式位置6A的狀態’第1連結用套ί 的太陽齒輪51實質上被中空轉子3的後端3a藏在其 花鍵 位置 側位 向滑 在本 向後 行星 該圓 套筒 狀態 第2 花鍵 離開 。在 65b 在與 4爲 成於 切換 ί 61 內部 -10- 200927365 ,並離開行星齒輪52而位於其前方。若切換機構6切換 成低速模式位置6B,太陽齒輪會從中空轉子3的後端 3a向後露出而形成嚙合於行星齒輪52的狀態。 如以上所說明’在本實施形態的切換式旋轉驅動裝置 1,切換機構6,係將始終和馬達的中空轉子3進行—體 旋轉的第1連結用套筒61、與始終和行星齒輪減速機構5 的行星托架53進行一體旋轉的第2連結用套筒62兩者, φ 透過軸承63而連結成能相對旋轉自如,又在第1連結用 套筒61形成太陽齒輪51。此外,藉由讓該切換機構6進 行滑動’能將輸出軸4在高速旋轉和低速旋轉之間進行切 換。 因此’相較於讓行星齒輪減速機構5整體滑動而在高 速旋轉和低速旋轉之間進行切換的情況,應滑動的部位變 小,且滑動所需的空間變少。因此有利於裝置的小型化、 緊緻化。 ❹ 【圖式簡單說明】 第1圖係顯示本發明的實施形態的切換式旋轉驅動裝 置之槪略構造圖;上半部顯示切換機構位於高速模式位置 的狀態,下半部顯示切換機構位於低速模式位置的狀態。 【主要元件符號說明】 1:切換式旋轉驅動裝置 1 a :中心軸線 -11 - 200927365 2 :裝置殼體 3 :中空轉子 3 a :中空轉子的後端 4 :輸出軸 5:行星齒輪減速機構 6 :切換機構 6A :高速模式位置 φ 6B :低速模式位置 31 :連結用內齒 5 1 :太陽齒輪 52 :行星齒輪 52a:行星齒輪軸 5 3 :行星托架 5 3 a :後側突緣 5 3 b :圓筒部 ❿ 53c :花鍵 54 :內齒 61 :第1連結用套筒 62 :第2連結用套筒 62a :花鍵槽 63 :軸承 64a :第1花鍵槽 64b :第1花鍵 65a :第2花鍵槽 -12 200927365 65b :第2花鍵
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Claims (1)

  1. 200927365 十、申請專利範圍 1. 一種切換式旋轉驅動裝置,其特徵在於:係具有 具備中空轉子的馬達、 以旋轉自如的狀態且呈同軸狀貫穿前述中空轉子的中 " 空部之輸出軸、 用來將前述中空轉子的旋轉減速後傳遞至前述輸出軸 Φ 之行星齒輪減速機構、以及 沿著前述輸出軸的外周面可在其中心軸線方向的高速 模式位置和低速模式位置之間進行滑動的切換機構; 前述切換機構係具備第1連結用套筒及第2連結用套 筒,此等第1連結用套筒和第2連結用套筒是透過軸承以 相對旋轉自如的狀態且呈同軸狀態來連結’在前述第1連 結用套筒的外周面形成有前述行星齒輪減速機構的太陽齒 輪; Q 當在前述高速模式位置,是透過前述第1連結用套筒 而使前述輸出軸及前述中空轉子成爲一體旋轉的直接連結 狀態; 當在前述低速模式位置’是使前述第1連結用套筒及 前述輸出軸的連結被解除’使該第1連結用套筒的前述太 陽齒輪連結於前述行星齒輪減速機構的行星齒輪’使前述 第2連結用套筒連結於作爲前述行星齒輪減速機構的減$ 旋轉輸出要素的行星托架’而使前述中空轉子的旋轉透過 前述行星齒輪減速機構被減速後傳遞至前述輸出軸。 -14 - 200927365 2. 如申請專利範圍第1項記載之切換式旋轉驅動裝 置,其中,前述第1連結用套筒,其相對於前述中空轉子 ,是在能夠滑動於前述中心軸線方向的狀態以一體旋轉的 方式連結於前述中空轉子; 在前述第1連結用套筒的圓形內周面形成有第1花鍵 槽, 在前述輸出軸的外周面形成有第1花鍵; ^ 當在前述高速模式位置,係使前述第1花鍵槽和前述 Φ 第1花鍵連結,當在前述低速模式位置,係使前述第1花 鍵槽和前述第1花鍵的連結被解除。 3. 如申請專利範圍第2項記載之切換式旋轉驅動裝 置,其中,前述第2連結用套筒,其相對於前述行星托架 ,是在能夠滑動於前述中心軸線方向的狀態以一體旋轉的 方式連結於前述行星托架; 在前述第2連結用套筒的圓形內周面形成有第2花鍵 φ 槽, 在前述輸出軸的外周面形成有第2花鍵; 當在前述高速模式位置,係使前述第2花鍵槽和前述 ' 第2花鍵的連結被解除,當在前述低速模式位置,係使前 述第2花鍵槽和前述第2花鍵連結。 4 ·如申請專利範圍第3項記載之切換式旋轉驅動裝 置,其中,前述輸出軸是從前述中空轉子的後端向後突出 » 在與該後端的後側鄰接的位置,以圍繞前述輸出軸的 -15- 200927365 狀態配置前述行星齒輪減速機構的 當在前述高速模式位置,係使 前述太陽齒輪藏在前述中空轉子的 式位置,係使前述太陽齒輪從前述 出而嚙合於前述行星齒輪。 前述行星齒輪; 前述第1連結用套筒的 內部,當在前述低速模 中空轉子的後端向後露
    -16-
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