TWI704306B - A roller gear cam mechanism - Google Patents

A roller gear cam mechanism Download PDF

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TWI704306B
TWI704306B TW105126259A TW105126259A TWI704306B TW I704306 B TWI704306 B TW I704306B TW 105126259 A TW105126259 A TW 105126259A TW 105126259 A TW105126259 A TW 105126259A TW I704306 B TWI704306 B TW I704306B
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Taiwan
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cam
bearing
rib
rotating member
roller gear
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TW105126259A
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Chinese (zh)
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TW201725334A (en
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勝又一久
高橋直幸
高村素夫
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日商三共製作所股份有限公司
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/22—Toothed members; Worms for transmissions with crossing shafts, especially worms, worm-gears
    • F16H55/24—Special devices for taking up backlash
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
    • F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Gear Transmission (AREA)
  • General Details Of Gearings (AREA)

Abstract

[課題]提供一種無齒隙、高剛性、高傳達效率並且可高速旋轉之滾輪齒輪凸輪機構。 [解決手段]於包含凸輪與旋轉構件之滾輪齒輪凸輪機構，在沿著旋轉構件之外周方向配置的複數個軸承當中，由相鄰的2個軸承所構成的軸承對，會以夾入凸輪肋的方式滾動接觸於凸輪肋，且在凸輪朝一方向旋轉而藉此將輸入扭矩傳達至旋轉構件、或是旋轉構件朝一方向旋轉而藉此將輸入扭矩傳達至凸輪的情形下，在軸承對滾動接觸於凸輪肋的期間，軸承對之各軸承會以對旋轉構件分別朝相反的一方向旋轉的方式，對凸輪肋進行滾動接觸。[Question] To provide a roller gear cam mechanism with no backlash, high rigidity, high transmission efficiency and high-speed rotation. [Solution] In a roller gear cam mechanism including a cam and a rotating member, among a plurality of bearings arranged along the outer circumference of the rotating member, a bearing pair composed of two adjacent bearings will sandwich the cam ribs When the cam is rotated in one direction to transmit the input torque to the rotating member, or the rotating member is rotated in one direction to transmit the input torque to the cam, the bearing is in rolling contact During the cam rib, each bearing of the bearing pair rotates the rotating member in the opposite direction to make rolling contact with the cam rib.

Description

滾輪齒輪凸輪機構Roller gear cam mechanism

本發明是有關於一種無齒隙、高剛性、高傳達效率並且可高速旋轉之滾輪齒輪凸輪機構。The invention relates to a roller gear cam mechanism with no backlash, high rigidity, high transmission efficiency and high-speed rotation.

發明背景 滾輪齒輪凸輪機構是以凹面桶狀凸輪(concave globoidal cam,roller gear cam)為代表，以具有螺旋形狀之凸輪肋的凸輪當作其中一方之軸，並將正交配置於該凸輪的旋轉構件當作另一方之軸，藉由使該凸輪與沿著該旋轉構件之外周方向配置的複數個軸承之咬合，而以凸輪與旋轉構件任一方之軸為輸入軸而傳達動力。凸輪肋是形成為錐面形狀，且藉由操作輸入軸與輸出軸之軸距而在軸承與凸輪肋的接觸部產生楔形效應所形成之預壓，而可消除在輸入及輸出間的齒隙。又由於輸入軸之扭矩會藉由軸承之滾動接觸而往輸出軸傳達，故可在無齒隙之狀態下平順地旋轉，且可進行抑制接觸部之摩擦損失的高效率之扭矩傳達。BACKGROUND OF THE INVENTION The roller gear cam mechanism is represented by a concave globoidal cam (roller gear cam). A cam with a spiral cam rib is used as one of the shafts, and is arranged orthogonally to the rotation of the cam The member is regarded as the other shaft, and power is transmitted by using either the cam and the shaft of the rotating member as the input shaft by engaging the cam with a plurality of bearings arranged along the outer circumference of the rotating member. The cam rib is formed into a tapered shape, and by operating the axis distance between the input shaft and the output shaft, a wedge effect is generated at the contact portion of the bearing and the cam rib to form a pre-compression, which can eliminate the backlash between the input and output . In addition, since the torque of the input shaft is transmitted to the output shaft through the rolling contact of the bearing, it can rotate smoothly without backlash, and can achieve high-efficiency torque transmission that suppresses the friction loss of the contact part.

專利文獻1中，揭示了由相當於凸輪之蝸桿、及相當於旋轉構件之滾輪齒輪所構成的滾輪齒輪式減速裝置。蝸桿是具有2條肋部，其中一肋部在其兩側面施加有遊隙加工，且相當於滾輪齒輪之彼此相鄰的2個軸承之滾輪從動件雖然會接觸於另一肋部之兩側面而成為從兩側夾住的狀態，但並不接觸於其中一肋部，又，肋部之厚度於蝸桿的任一位置皆相同。 先行技術文獻 專利文獻Patent Document 1 discloses a roller gear type reduction gear including a worm corresponding to a cam and a roller gear corresponding to a rotating member. The worm has two ribs, one of which has clearance processing on its two sides, and is equivalent to the roller follower of the two adjacent bearings of the roller gear, although it will contact both of the other ribs. The side faces are sandwiched from both sides, but they do not touch one of the ribs, and the thickness of the ribs is the same at any position of the worm. Prior technical literature Patent literature

專利文獻1：日本特開第2000-158293號公報Patent Document 1: Japanese Patent Laid-Open No. 2000-158293

發明概要 發明欲解決之問題 在習知的滾輪齒輪凸輪機構裡，操作輸入軸與輸出軸之軸距並對軸承與凸輪肋之接觸部施以預壓的機構中，軸承是以凸輪中央附近為界，將滾動接觸之凸輪肋面從其中一方改變為另一方，藉此，軸承對旋轉構件的旋轉方向會反轉。因此，在習知的滾輪齒輪凸輪機構裡，會在凸輪中央附近設置與軸承及凸輪肋不接觸之區間，且在使軸承之惰性旋轉暫時停止之後，必須讓軸承所滾動接觸之凸輪肋面從其中一方改變為另一方，使軸承對旋轉構件的旋轉方向反轉。然而，若使凸輪高速旋轉，位於凸輪中央附近之軸承雖不與凸輪肋接觸，但在通過軸承與凸輪肋不接觸區間的期間，軸承之惰性旋轉有無法完全停止的疑慮。如此，則當伴隨有惰性旋轉之軸承再度接觸於凸輪肋時，由於凸輪肋相對於軸承之惰性旋轉方向是朝反方向賦與驅動力，故會發生滑動摩擦，且有時會在軸承與凸輪肋之接觸面引起磨耗或刮痕等的損傷，這在凸輪愈高速旋轉時愈顯著。因此，如此之滾輪齒輪凸輪機構具有凸輪妨礙高速旋轉之問題。SUMMARY OF THE INVENTION The problem to be solved by the invention is in the conventional roller gear cam mechanism, which operates the axle distance between the input shaft and the output shaft and preloads the contact portion between the bearing and the cam rib. The bearing is located near the center of the cam By changing the rolling contact cam rib surface from one to the other, the direction of rotation of the bearing to the rotating member is reversed. Therefore, in the conventional roller gear cam mechanism, a zone not in contact with the bearing and the cam rib is provided near the center of the cam, and after the idle rotation of the bearing is temporarily stopped, the cam rib surface that the bearing is in rolling contact must be removed from One of them is changed to the other to reverse the direction of rotation of the bearing to the rotating member. However, if the cam is rotated at a high speed, although the bearing located near the center of the cam does not contact the cam rib, the idle rotation of the bearing may not be completely stopped during the period when the bearing and cam rib are not in contact with each other. In this way, when the bearing accompanied by idle rotation comes into contact with the cam ribs again, since the cam ribs provide driving force in the opposite direction relative to the idle rotation direction of the bearing, sliding friction will occur, and sometimes there will be friction between the bearing and the cam. The contact surface of the rib causes damage such as abrasion or scratches, which becomes more obvious when the cam rotates at a higher speed. Therefore, such a roller gear cam mechanism has a problem that the cam hinders high-speed rotation.

於專利文獻1之滾輪齒輪式減速裝置，在相當於凸輪之蝸桿中，由於各肋部之厚度於蝸桿的任一位置皆相同，故當相當於軸承之滾輪從動件逐漸進入蝸桿時，滾輪從動件會碰撞肋部之端部，而有在滾輪從動件或肋部之接觸面引起磨耗或損傷的問題。又，當滾輪從動件進入蝸桿時，於蝸桿的任一旋轉角度位置，肋部都必須以經常賦與滾輪從動件相等推壓的方式與之接觸，故無法順暢地啟動滾輪從動件與肋部之接觸，而且，滾輪從動件與肋部接觸的期間會產生滑動摩擦，而有在滾輪從動件或肋部之接觸面引起磨耗或損傷的問題。In the roller gear reducer of Patent Document 1, in the worm equivalent to the cam, the thickness of each rib is the same at any position of the worm, so when the roller follower equivalent to the bearing gradually enters the worm, the roller The follower will collide with the end of the rib, and there is a problem of wear or damage on the contact surface of the roller follower or the rib. In addition, when the roller follower enters the worm, at any rotation angle position of the worm, the ribs must always contact with the roller follower in a manner equal to the pressing force, so the roller follower cannot be started smoothly. The contact with the ribs and the sliding friction occurs during the contact between the roller follower and the ribs, and there is a problem of wear or damage on the contact surface of the roller follower or the ribs.

因此，本發明之目的在於解決上述問題點，並提供一種無齒隙、高剛性、具有高傳達效率並且可高速旋轉之滾輪齒輪凸輪機構。 用以解決課題之手段Therefore, the object of the present invention is to solve the above-mentioned problems and provide a roller gear cam mechanism with no backlash, high rigidity, high transmission efficiency and high-speed rotation. Means to solve the problem

根據本發明，上述目的是藉由以下之滾輪齒輪凸輪機構而達成，其包含：凸輪，具有螺旋形狀之凸輪肋，可以凸輪軸線為中心旋轉；及旋轉構件，是可以正交於凸輪軸線的旋轉構件軸線為中心而旋轉的旋轉構件，且沿著旋轉構件之外周方向配置的複數個軸承之各個可對前述凸輪肋進行滾動接觸，該滾輪齒輪凸輪機構之複數個軸承當中，由相鄰的2個軸承所構成的第1軸承對，會以夾入凸輪肋的方式滾動接觸於凸輪肋，且在凸輪以凸輪軸線為中心朝一方向旋轉而藉此將凸輪之輸入扭矩傳達至旋轉構件、或是旋轉構件以旋轉構件軸線為中心朝一方向旋轉而藉此將旋轉構件之輸入扭矩傳達至凸輪的情形下，在第1軸承對滾動接觸於凸輪肋的期間，第1軸承對之各軸承，會以對旋轉構件分別朝相反的一方向旋轉的方式，對凸輪肋進行滾動接觸。According to the present invention, the above object is achieved by the following roller gear cam mechanism, which includes: a cam, a cam rib having a spiral shape, which can rotate around the cam axis; and a rotating member that can rotate orthogonal to the cam axis A rotating member that rotates on the axis of the member, and each of the plurality of bearings arranged along the outer circumference of the rotating member can make rolling contact with the aforementioned cam rib. Among the plurality of bearings of the roller gear cam mechanism, the adjacent two The first bearing pair composed of two bearings will roll in contact with the cam ribs by sandwiching the cam ribs and rotate in one direction around the cam axis to transmit the input torque of the cam to the rotating member, or When the rotating member rotates in one direction around the axis of the rotating member to transmit the input torque of the rotating member to the cam, while the first bearing pair is in rolling contact with the cam rib, each bearing of the first bearing pair will The cam ribs are brought into rolling contact by rotating the rotating members in opposite directions.

又，上述目的之外，另一個目的是藉由以下之滾輪齒輪凸輪機構而達成：其中凸輪肋是具有第1端部、中央部、及第2端部，且凸輪肋之厚度是從第1端部朝向中央部增加至某範圍。In addition to the above objectives, another objective is achieved by the following roller gear cam mechanism: wherein the cam rib has a first end, a center, and a second end, and the thickness of the cam rib is from the first The end increases to a certain range toward the center.

又，上述目的之外，另一個目的是藉由以下之滾輪齒輪凸輪機構而達成：其中凸輪肋之厚度是從第2端部朝向中央部增加至某範圍。Furthermore, in addition to the above-mentioned object, another object is achieved by the following roller gear cam mechanism: the thickness of the cam rib increases to a certain range from the second end toward the center.

又，上述目的之外，另一個目的是藉由以下之滾輪齒輪凸輪機構而達成：其中複數個軸承當中由相鄰的2個軸承所構成的第2軸承對，會以夾入凸輪肋的方式滾動接觸於凸輪肋。Moreover, in addition to the above objectives, another objective is achieved by the following roller gear cam mechanism: the second bearing pair composed of two adjacent bearings among the plural bearings will be sandwiched by the cam ribs Rolling contact with cam ribs.

又，上述目的之外，另一個目的是藉由以下之滾輪齒輪凸輪機構而達成：其中凸輪是於設置在凸輪肋之間的凸輪溝具有突起部，該突起部在凸輪以凸輪軸線為中心旋轉的情形下，不接觸於複數個軸承。In addition to the above objectives, another objective is achieved by the following roller gear cam mechanism: wherein the cam has a protrusion in the cam groove provided between the cam ribs, and the protrusion rotates on the cam with the cam axis as the center In the case of no contact with multiple bearings.

又，上述目的之外，另一個目的是藉由以下之滾輪齒輪凸輪機構而達成：其於突起部設置有溝槽。In addition to the above objectives, another objective is achieved by the following roller gear cam mechanism: a groove is provided in the protrusion.

又，上述目的之外，另一個目的是藉由以下之滾輪齒輪凸輪機構而達成：其中複數個軸承之各個是滾輪從動件或凸輪從動件。In addition to the above objectives, another objective is achieved by the following roller gear cam mechanism: each of the plurality of bearings is a roller follower or a cam follower.

又，上述目的之外，另一個目的是藉由以下之滾輪齒輪凸輪機構而達成：其中複數個軸承之各個是滾動接觸之軸承或滑動接觸之軸承。 發明效果In addition to the above objectives, another objective is achieved by the following roller gear cam mechanism: each of the plurality of bearings is a rolling contact bearing or a sliding contact bearing. Invention effect

如同本發明，藉由以軸承對夾入凸輪肋的方式滾動接觸於凸輪肋，則不必如同習知的滾輪齒輪凸輪機構般在凸輪中央附近設置使軸承與凸輪肋不接觸之區間，且不必使軸承之惰性旋轉暫時停止，故可達到以下效果：不會引起如習知之原因所造成的軸承及凸輪肋之對彼此接觸面的磨耗或損傷，並可實現可高速旋轉之滾輪齒輪凸輪機構。As in the present invention, by rolling and contacting the cam ribs with the bearing pair sandwiching the cam ribs, it is not necessary to provide a section near the center of the cam so that the bearing does not contact the cam ribs as in the conventional roller gear cam mechanism, and it is not necessary to use The idle rotation of the bearing is temporarily stopped, so the following effects can be achieved: it will not cause wear or damage to the contact surface of the bearing and the cam rib due to conventional reasons, and a high-speed rotating roller gear cam mechanism can be realized.

又，如同本發明，藉由使凸輪肋之厚度從其端部朝向中央部增加至某範圍，伴隨凸輪的旋轉，軸承及凸輪肋之間的間隙慢慢地變窄而可順暢地啟動軸承及凸輪肋的滾動接觸，並可達到以下效果：抑制軸承及凸輪肋之對彼此接觸面的磨耗或損傷，且得以順暢地旋轉。如同本發明，藉由以2個軸承對夾入凸輪肋的方式滾動接觸於凸輪肋，則任一軸承對會經常夾入凸輪肋，而可達到與凸輪之旋轉角度位置或旋轉構件之旋轉角度位置不相關之消除齒隙的效果。Also, as in the present invention, by increasing the thickness of the cam rib from its end to the center to a certain range, as the cam rotates, the gap between the bearing and the cam rib is gradually narrowed, and the bearing and cam ribs can be started smoothly. The rolling contact of the cam ribs can achieve the following effects: the wear or damage of the contact surfaces of the bearing and the cam ribs is suppressed, and the rotation can be smoothly. As in the present invention, by rolling and contacting the cam ribs with two bearing pairs sandwiching the cam ribs, any bearing pair will often sandwich the cam ribs, which can reach the rotation angle position of the cam or the rotation angle of the rotating member The position is irrelevant to eliminate the effect of backlash.

再者，本發明之其他目的、特徵及優點，從附圖相關之以下之本發明之實施例的記載應可明顯看出。Furthermore, other objects, features and advantages of the present invention should be apparent from the description of the following embodiments of the present invention related to the accompanying drawings.

用以實施發明之形態 以下，就本發明之實施例參照圖式加以說明，但本發明並非限定於該等之實施例者。Modes for Implementing the Invention Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to these embodiments.

參照圖1~12，說明本發明之滾輪齒輪凸輪機構之實施例。圖1、2中，分別顯示滾輪齒輪凸輪機構101從正面看的概略圖及從側面看的概略圖。滾輪齒輪凸輪機構101是包含：凸輪102，具有螺旋形狀之凸輪肋104，可以凸輪軸線103為中心旋轉；及旋轉構件107，是一種可以正交於凸輪軸線103的旋轉構件軸線108為中心而旋轉的旋轉構件107，且沿著旋轉構件107之外周方向配置的複數個軸承109(109a、109b…)之各個可對前述凸輪肋104進行滾動接觸。凸輪軸線103、旋轉構件軸線108是其中任一方為輸入軸，另一方為輸出軸，且其關係亦可相互對調。複數個軸承109之各個是包含軸構件、可沿著軸構件之外周面旋轉之外輪部等，並藉由使軸構件嵌合於旋轉構件107等而沿著旋轉構件107之外周方向配置。藉由使複數個軸承109之各個與凸輪肋104之間進行滾動接觸，可提升自凸輪102、或是自旋轉構件107所輸入之扭矩之往輸出軸側之傳達效率，並且可延長滾輪齒輪凸輪機構101之壽命。又，複數個軸承109之各個與凸輪肋104之間由於是線接觸，故對於旋轉構件107之旋轉方向之外力具有高剛性。1-12, the embodiment of the roller gear cam mechanism of the present invention will be described. In FIGS. 1 and 2, a schematic view of the roller gear cam mechanism 101 viewed from the front and a schematic view of the side view are respectively shown. The roller gear cam mechanism 101 includes: a cam 102, a cam rib 104 with a spiral shape, which can rotate around the cam axis 103; and a rotating member 107, which can rotate around a rotating member axis 108 orthogonal to the cam axis 103 Each of the plurality of bearings 109 (109a, 109b...) arranged along the outer circumferential direction of the rotating member 107 can make rolling contact with the aforementioned cam rib 104. Either one of the cam axis 103 and the rotating member axis 108 is the input shaft, and the other is the output shaft, and the relationship can also be reversed. Each of the plurality of bearings 109 includes a shaft member, an outer ring portion rotatable along the outer peripheral surface of the shaft member, and the like, and is arranged along the outer peripheral direction of the rotating member 107 by fitting the shaft member to the rotating member 107 or the like. By making each of the plurality of bearings 109 and the cam rib 104 make rolling contact, the transmission efficiency of the torque input from the cam 102 or the self-rotating member 107 to the output shaft side can be improved, and the roller gear cam can be extended The life of organization 101. In addition, since each of the plurality of bearings 109 and the cam rib 104 are in line contact, they have high rigidity against external forces in the rotation direction of the rotating member 107.

複數個軸承109當中由相鄰的2個軸承109a、109b，或是相鄰的2個軸承109c、109d所構成的軸承對，以夾入凸輪肋104的方式接觸於凸輪肋104。亦即，由第1軸承109a、第2軸承109b所構成的第1軸承對，會以夾入一連串之凸輪肋104當中的一部分104a的方式接觸於該一部分104a，或是由第3軸承109c、第4軸承109d所構成的第2軸承對，以夾入一連串之凸輪肋104當中的一部分104b的方式接觸於該一部分104b。而且，當凸輪102為輸入側時，藉由以凸輪軸線103為中心如箭頭般朝一方向旋轉，使凸輪102之輸入扭矩傳達至旋轉構件107，則旋轉構件107會以旋轉構件軸線108為中心如箭頭般旋轉。當旋轉構件107為輸入側時，藉由以旋轉構件軸線108為中心如箭頭般朝一方向旋轉，使旋轉構件107之輸入扭矩傳達至凸輪102，則凸輪102會以凸輪軸線103為中心如箭頭般旋轉。在該等之情形下，由第1軸承109a、第2軸承109b所構成的第1軸承對在接觸於凸輪肋104的期間，第1軸承109a、第2軸承109b是如箭頭所示，對旋轉構件107分別朝反方向旋轉，並對凸輪肋104進行滾動接觸。又，由第3軸承109c、第4軸承109d所構成的第2軸承對在接觸於凸輪肋104的期間，第3軸承109c、第3軸承109d是如箭頭所示，對旋轉構件107分別朝反方向旋轉，並對凸輪肋104進行滾動接觸。A bearing pair composed of two adjacent bearings 109a and 109b or two adjacent bearings 109c and 109d among the plurality of bearings 109 is in contact with the cam rib 104 by sandwiching the cam rib 104. That is, the first bearing pair constituted by the first bearing 109a and the second bearing 109b will contact the part 104a of the series of cam ribs 104 by sandwiching the part 104a, or the third bearing 109c, The second bearing pair constituted by the fourth bearing 109d contacts the part 104b of the series of cam ribs 104 so as to sandwich the part 104b. Moreover, when the cam 102 is the input side, the input torque of the cam 102 is transmitted to the rotating member 107 by rotating in one direction with the cam axis 103 as the center as an arrow, and the rotating member 107 will be centered on the rotating member axis 108 as Rotate like an arrow. When the rotating member 107 is the input side, by rotating in one direction like an arrow around the rotating member axis 108, the input torque of the rotating member 107 is transmitted to the cam 102, and the cam 102 will be centered on the cam axis 103 like an arrow Spin. In these cases, while the first bearing pair constituted by the first bearing 109a and the second bearing 109b is in contact with the cam rib 104, the first bearing 109a and the second bearing 109b rotate as shown by the arrows. The members 107 respectively rotate in opposite directions and make rolling contact with the cam ribs 104. Also, while the second bearing pair constituted by the third bearing 109c and the fourth bearing 109d is in contact with the cam rib 104, the third bearing 109c and the third bearing 109d are as shown by the arrows, and face the rotating member 107 respectively. It rotates in the direction and makes rolling contact with the cam rib 104.

使用圖3、4更詳細地說明。圖3是顯示於滾輪齒輪凸輪機構101的一個時點，表示凸輪肋104與沿著旋轉構件107之外周方向配置的各軸承109a~109e之接觸狀態從正面看的放大概略圖；圖4是顯示於滾輪齒輪凸輪機構101之與圖3相同的時點，表示凸輪肋104與各軸承109a~109e之接觸狀態從上面看的放大概略圖。複數個軸承109當中由相鄰的第1軸承109a、第2軸承109b所構成的第1軸承對，是夾入一連串之凸輪肋104當中的一部分之第1凸輪肋104a，且第1軸承109a、第2軸承109b是分別接觸於第1凸輪肋104a之第1凸輪肋面105、第2凸輪肋面106。又，複數個軸承109當中由相鄰的第3軸承109c、第4軸承109d所構成的第2軸承對，是夾入一連串之凸輪肋104當中的一部分之第2凸輪肋104b，且第3軸承109c、第4軸承109d是分別接觸於第2凸輪肋104b之第1凸輪肋面105、第2凸輪肋面106。而且，在凸輪102以凸輪軸線103為中心如箭頭般朝一方向旋轉的情形下，在第1軸承對接觸於由第1凸輪肋104a、第2凸輪肋104b、第3凸輪肋104c所構成的一連串之凸輪肋104的期間，第1軸承109a、第2軸承109b是分別對旋轉構件107朝反方向旋轉(於圖4中，第1軸承109a是朝順時針方向、第2軸承109b是朝逆時針方向旋轉)，並對凸輪肋104進行滾動接觸。又，在第2軸承對接觸於由第1凸輪肋104a、第2凸輪肋104b、第3凸輪肋104c所構成的一連串之凸輪肋104的期間，第3軸承109c、第4軸承109d亦是分別對旋轉構件107朝反方向旋轉(於圖4中，第3軸承109c是朝順時針方向、第4軸承109d是朝逆時針方向旋轉)，並對凸輪肋104進行滾動接觸。Use Figures 3 and 4 to explain in more detail. Fig. 3 is an enlarged schematic view from the front showing the contact state between the cam rib 104 and the bearings 109a~109e arranged along the outer circumference of the rotating member 107 at a time point of the roller gear cam mechanism 101; Fig. 4 is shown in The roller gear cam mechanism 101 at the same time as FIG. 3 shows the contact state between the cam rib 104 and the bearings 109a to 109e, which is an enlarged schematic view from the top. Among the plurality of bearings 109, the first bearing pair constituted by adjacent first bearings 109a and second bearings 109b is a first cam rib 104a sandwiched between a part of a series of cam ribs 104, and the first bearing 109a, The second bearing 109b is in contact with the first cam rib surface 105 and the second cam rib surface 106 of the first cam rib 104a, respectively. In addition, the second bearing pair constituted by the adjacent third bearing 109c and the fourth bearing 109d among the plurality of bearings 109 is the second cam rib 104b sandwiched between a part of the series of cam ribs 104, and the third bearing 109c and the fourth bearing 109d are in contact with the first cam rib surface 105 and the second cam rib surface 106 of the second cam rib 104b, respectively. Furthermore, when the cam 102 rotates in one direction as an arrow with the cam axis 103 as the center, the first bearing pair is in contact with the series of the first cam rib 104a, the second cam rib 104b, and the third cam rib 104c. During the cam rib 104, the first bearing 109a and the second bearing 109b rotate in the opposite direction to the rotating member 107 (in FIG. 4, the first bearing 109a is clockwise, and the second bearing 109b is counterclockwise. Direction rotation), and make rolling contact with the cam rib 104. In addition, while the second bearing pair is in contact with the series of cam ribs 104 composed of the first cam rib 104a, the second cam rib 104b, and the third cam rib 104c, the third bearing 109c and the fourth bearing 109d are also respectively The rotating member 107 is rotated in the reverse direction (in FIG. 4, the third bearing 109c is rotated in the clockwise direction, and the fourth bearing 109d is rotated in the counterclockwise direction), and the cam rib 104 is brought into rolling contact.

又，在凸輪102以凸輪軸線103為中心朝與箭頭相反的方向旋轉的情形下，在第1軸承對接觸於凸輪肋104的期間，第1軸承109a、第2軸承109b是分別對旋轉構件107朝反方向旋轉(在此情形下，第1軸承109a是朝逆時針方向、第2軸承109b是朝順時針方向旋轉，成為與圖4反方向的旋轉)，並對凸輪肋104進行滾動接觸。又，在第2軸承對接觸於凸輪肋104的期間，第3軸承109c、第4軸承109d亦是分別對旋轉構件107朝反方向旋轉(在此情形下，第3軸承109c是朝逆時針方向、第4軸承109d是朝順時針方向旋轉，成為與圖4反方向的旋轉)，並對凸輪肋104進行滾動接觸。In addition, when the cam 102 rotates in the direction opposite to the arrow centered on the cam axis 103, the first bearing 109a and the second bearing 109b are opposed to the rotating member 107 while the first bearing pair is in contact with the cam rib 104. Rotate in the reverse direction (in this case, the first bearing 109a is counterclockwise, and the second bearing 109b is rotated in the clockwise direction, resulting in a rotation in the opposite direction to that of FIG. 4), and the cam rib 104 is brought into rolling contact. Also, while the second bearing pair is in contact with the cam rib 104, the third bearing 109c and the fourth bearing 109d also rotate in the opposite direction to the rotating member 107 (in this case, the third bearing 109c is turned counterclockwise) , The fourth bearing 109d rotates in the clockwise direction, turning into the opposite direction of FIG. 4), and makes rolling contact with the cam rib 104.

如同上述之凸輪肋104與複數個軸承109的接觸狀態，無論是在以凸輪102為輸入側並使旋轉構件107旋轉的情形下，或是在以旋轉構件107為輸入側並使凸輪102旋轉的情形下，都是呈現同樣的狀態。The contact state between the cam rib 104 and the plurality of bearings 109 is the same as when the cam 102 is used as the input side and the rotating member 107 is rotated, or when the rotating member 107 is used as the input side and the cam 102 is rotated Under the circumstances, they are all in the same state.

如此，則在凸輪102朝一方向旋轉的情形下，在各軸承109a~109d接觸於凸輪肋104的期間，不必停止各軸承109a~109d之對旋轉構件107的旋轉，且由於各軸承109a~109d對旋轉構件107僅朝一方向旋轉，故各軸承109a~109d及凸輪肋104不會引起對彼此接觸面的磨耗或損傷，並可實現可高速旋轉之滾輪齒輪凸輪機構。又，第1軸承對或第2軸承對由於是以夾入凸輪肋104的方式接觸於凸輪肋104，故可實現無齒隙之滾輪齒輪凸輪機構101。再者，不再對凸輪肋104接觸之軸承109e，對旋轉構件107既可藉由惰性而旋轉，亦可不旋轉。In this way, when the cam 102 rotates in one direction, while the bearings 109a to 109d are in contact with the cam rib 104, it is not necessary to stop the rotation of the pair of rotating members 107 of the bearings 109a to 109d, and since the bearings 109a to 109d are paired The rotating member 107 only rotates in one direction, so the bearings 109a to 109d and the cam rib 104 will not cause wear or damage to the contact surfaces of each other, and a roller gear cam mechanism that can rotate at a high speed can be realized. In addition, since the first bearing pair or the second bearing pair contacts the cam rib 104 so as to sandwich the cam rib 104, the roller gear cam mechanism 101 without backlash can be realized. Furthermore, the bearing 109e that no longer contacts the cam rib 104 may or may not rotate the rotating member 107 by inertia.

又，圖5是顯示於滾輪齒輪凸輪機構101中，從上方看表示由第1凸輪肋104a、第2凸輪肋104b、第3凸輪肋104c所構成的一連串之凸輪肋104與各軸承109a~109e之接觸狀態的展開圖。橫軸表示凸輪102之凸輪軸線103之方向的位置，縱軸表示凸輪102的旋轉角度。如圖5所示，凸輪肋104是具有第1端部(A點)、中央部(B點~E點)、及第2端部(F點)，凸輪肋104之厚度亦可隨著從第1端部(A點)朝向中央部(B點~E點)而增加。藉由旋轉構件107伴隨凸輪102旋轉之旋轉，或是旋轉構件107本身之旋轉，逐漸進入凸輪肋104之第1軸承對的第1軸承109a及第2軸承109b於凸輪肋104之第1端部(A點)並未接觸(非接觸區間軸承)。這是由於在第1端部(A點)之凸輪肋104的厚度小於中央部(B點~E點)之凸輪肋104的厚度。進而當凸輪102之旋轉進行，隨著從A點朝向B點，凸輪肋104之厚度慢慢地變大，故第1軸承109a與第1凸輪肋面105的間隙、以及第2軸承109b與第2凸輪肋面106的間隙慢慢地變小(間隙減少區間軸承)。進而當凸輪102之旋轉進行且第1軸承對到達B點時，第1軸承109a與第1凸輪肋面105的間隙、以及第2軸承109b與第2凸輪肋面106的間隙消失，成為所謂負間隙狀態(完全負間隙位置軸承)。而且，從B點到E點之間，第1軸承對(109a、109b)或第2軸承對(109c、109d)，是以夾入凸輪肋104的方式對凸輪肋104進行滾動接觸(接觸區間軸承)。如此，藉由設置有使軸承109與凸輪肋104的間隙慢慢地變小之從A點到B點的間隙減少區間，可順暢地啟動軸承109與凸輪肋104之滾動接觸，而抑制軸承109及凸輪肋104之對彼此接觸面的磨耗或損傷。而且，間隙減少區間、以及軸承109與凸輪肋104之間的負間隙量，是以如下條件而決定：極力壓抑滑動摩擦，並且軸承109可在最小限度之凸輪之旋轉角度範圍內轉移至旋轉狀態。5 is shown in the roller gear cam mechanism 101, viewed from above, shows a series of cam ribs 104 constituted by the first cam rib 104a, the second cam rib 104b, and the third cam rib 104c and the bearings 109a to 109e The expanded view of the contact state. The horizontal axis represents the position of the cam 102 in the direction of the cam axis 103, and the vertical axis represents the rotation angle of the cam 102. As shown in FIG. 5, the cam rib 104 has a first end (point A), a center (point B to point E), and a second end (point F). The thickness of the cam rib 104 can also follow from The first end (point A) increases toward the center (point B to point E). By the rotation of the rotating member 107 accompanying the rotation of the cam 102, or the rotation of the rotating member 107 itself, the first bearing 109a and the second bearing 109b of the first bearing pair of the cam rib 104 are gradually entered at the first end of the cam rib 104 (Point A) is not in contact (non-contact section bearing). This is because the thickness of the cam rib 104 at the first end (point A) is smaller than the thickness of the cam rib 104 at the center (point B to point E). Furthermore, as the rotation of the cam 102 progresses, the thickness of the cam rib 104 gradually increases from point A to point B, so the gap between the first bearing 109a and the first cam rib 105, and the second bearing 109b and the first 2 The clearance of the cam rib surface 106 gradually becomes smaller (the clearance reduction interval bearing). Furthermore, when the rotation of the cam 102 progresses and the first bearing pair reaches point B, the gap between the first bearing 109a and the first cam rib 105 and the gap between the second bearing 109b and the second cam rib 106 disappear, becoming a so-called negative Clearance state (bearing in the position of complete negative clearance). Furthermore, from point B to point E, the first bearing pair (109a, 109b) or the second bearing pair (109c, 109d) is in rolling contact with the cam rib 104 (contact section Bearing). In this way, by providing a gap reduction section from point A to point B that gradually reduces the gap between the bearing 109 and the cam rib 104, the rolling contact between the bearing 109 and the cam rib 104 can be started smoothly, and the bearing 109 can be suppressed. And cam ribs 104 to wear or damage the contact surfaces. Furthermore, the gap reduction interval and the negative gap amount between the bearing 109 and the cam rib 104 are determined based on the following conditions: the sliding friction is suppressed as much as possible, and the bearing 109 can shift to the rotating state within the minimum range of the cam rotation angle .

進而，如圖5所示，凸輪肋104之厚度亦可隨著從第2端部(F點)朝向中央部(B點~E點)而增加。如此，不僅是從A點到B點，從F點到E點亦設置使軸承109與凸輪肋104的間隙慢慢地變小的間隙減少區間，藉此，即使是在凸輪102、或是旋轉構件107朝任一方向旋轉並將扭矩傳達給彼此的情形下，皆能順暢地啟動軸承109與凸輪肋104之滾動接觸，而抑制軸承109及凸輪肋104之對彼此接觸面的磨耗或損傷。再者，在凸輪102僅朝一方向旋轉的情形下，亦可配合該旋轉，在從A點到B點、或從F點到E點的其中任一方之凸輪肋104之端部，設置使軸承109與凸輪肋104的間隙慢慢地變小的間隙減少區間。Furthermore, as shown in FIG. 5, the thickness of the cam rib 104 may increase from the 2nd end part (F point) toward the center part (B point-E point). In this way, not only from point A to point B, but also from point F to point E, a gap reduction section is set to gradually reduce the gap between the bearing 109 and the cam rib 104, so that even when the cam 102 or rotating When the member 107 rotates in either direction and transmits torque to each other, the rolling contact between the bearing 109 and the cam rib 104 can be smoothly activated, and the wear or damage of the contact surface between the bearing 109 and the cam rib 104 can be suppressed. Furthermore, when the cam 102 only rotates in one direction, it is also possible to cooperate with the rotation, and a bearing may be provided at the end of the cam rib 104 from point A to point B, or from point F to point E. The gap between 109 and the cam rib 104 gradually becomes smaller and the gap decreases in the interval.

又，第1軸承對(109a、109b)及第2軸承對(109c、109d) 亦可為以夾入凸輪肋104的方式接觸於凸輪肋104。亦即，如圖5所示，於凸輪102之旋轉角度中，亦可設置有使2個軸承對夾入凸輪肋104的重疊區間，就如同第1軸承對(109a、109b)在從B點到C點分別接觸於凸輪肋104之第1凸輪肋面105、第2凸輪肋面106，且第2軸承對(109c、109d)在從D點到F點分別接觸於凸輪肋104之第1凸輪肋面105、第2凸輪肋面106一樣。藉由如此設置重疊區間，則在第2軸承對(109c、109d)之對凸輪肋104的夾入結束之前，第1軸承對(109a、109b)之對凸輪肋104的夾入開始，由於必定會有1個軸承對夾入凸輪肋104，故可實現使凸輪102及旋轉構件107之旋轉角度位置所造成的齒隙消失之滾輪齒輪凸輪機構101。In addition, the first bearing pair (109a, 109b) and the second bearing pair (109c, 109d) may be in contact with the cam rib 104 so as to sandwich the cam rib 104. That is, as shown in FIG. 5, in the rotation angle of the cam 102, it is also possible to provide two bearing pairs sandwiching the overlapping section of the cam rib 104, just like the first bearing pair (109a, 109b) from point B The first cam rib surface 105 and the second cam rib surface 106 of the cam rib 104 are respectively contacted to point C, and the second bearing pair (109c, 109d) respectively contacts the first cam rib 104 from point D to point F. The cam rib 105 and the second cam rib 106 are the same. By setting the overlap section in this way, before the clamping of the cam rib 104 of the second bearing pair (109c, 109d) is completed, the clamping of the cam rib 104 of the first bearing pair (109a, 109b) starts, because it must There is a bearing pair sandwiching the cam rib 104, so the roller gear cam mechanism 101 can be realized to eliminate the backlash caused by the rotation angle position of the cam 102 and the rotating member 107.

圖6顯示了其他之滾輪齒輪凸輪機構101從正面看的概略圖。如圖6所示，凸輪102亦可在設置於螺旋形狀之凸輪肋104之間的凸輪溝110具有突起部111，且該突起部111是位於凸輪102以凸輪軸線103為中心旋轉時不接觸於複數個軸承109，且凸輪肋104與複數個軸承109之各個互不干涉的位置。像這樣藉由凸輪102具有突起部111，於滾輪齒輪凸輪機構101中，可作為平衡配重而提升旋轉平衡。FIG. 6 shows a schematic view of another roller gear cam mechanism 101 viewed from the front. As shown in FIG. 6, the cam 102 may also have a protrusion 111 in the cam groove 110 provided between the spiral cam ribs 104, and the protrusion 111 is located when the cam 102 rotates around the cam axis 103 and does not contact with There are a plurality of bearings 109, and each of the cam ribs 104 and the plurality of bearings 109 does not interfere with each other. In this way, since the cam 102 has the protrusion 111, the roller gear cam mechanism 101 can be used as a counterweight to improve the rotation balance.

圖7、8分別顯示了進一步其他之滾輪齒輪凸輪機構的部分立體圖及表示凸輪肋與軸承之接觸狀態從正面看的放大概略圖。如圖7、8所示，在凸輪溝110之配置於凸輪肋104與複數個軸承109之各個互不干涉的位置的突起部111，亦可設置有溝槽112等的形狀，藉以用於對複數個軸承109之各個供給‧保持潤滑油。Figures 7 and 8 respectively show a partial perspective view of another roller gear cam mechanism and an enlarged schematic view from the front showing the contact state between the cam rib and the bearing. As shown in Figures 7 and 8, the protrusion 111 of the cam groove 110 arranged at a position where the cam rib 104 and the plurality of bearings 109 do not interfere with each other may also be provided with a groove 112 or the like for alignment Each supply of plural bearings 109 ‧ keep lubricating oil.

圖9、10中，分別顯示了更進一步其他之滾輪齒輪凸輪機構101從正面看的概略圖、及從側面看的概略圖。圖7、8所示之滾輪齒輪凸輪機構101與圖1、2所示之滾輪齒輪凸輪機構101的相異之處，在於使凸輪肋104之螺旋形狀之捲繞方向相反。藉由像這樣使螺旋形狀之捲繞方向相反，即使是在圖1、2及圖7、8之凸輪102以凸輪軸線103為中心朝相同的箭頭方向旋轉的情形下，亦可使旋轉構件107以旋轉構件軸線108為中心分別朝反方向旋轉(旋轉構件107分別是在圖1朝逆時針方向，在圖7朝順時針方向旋轉)。9 and 10 show a schematic view of another roller gear cam mechanism 101 viewed from the front and a schematic view of the side view, respectively. The roller gear cam mechanism 101 shown in FIGS. 7 and 8 differs from the roller gear cam mechanism 101 shown in FIGS. 1 and 2 in that the winding direction of the spiral shape of the cam rib 104 is reversed. By reversing the winding direction of the spiral shape in this way, even when the cam 102 in FIGS. 1, 2 and 7 and 8 rotates in the same arrow direction around the cam axis 103, the rotating member 107 can be made The rotation member 107 rotates in the opposite direction with the rotation member axis 108 as the center (the rotation member 107 rotates in the counterclockwise direction in FIG. 1 and rotates in the clockwise direction in FIG. 7 ).

複數個軸承109之各個，亦可是滾輪從動件或凸輪從動件。Each of the plurality of bearings 109 may also be a roller follower or a cam follower.

複數個軸承109之各個雖具備軸構件、可沿著軸構件之外周面旋轉之外輪部等，但既可為在軸構件與外輪部之間包含有滾子等之滾動接觸的軸承，亦可為不包含有滾子等之滑動接觸的軸承。再者，若在凸輪溝110之配置於凸輪肋104與複數個軸承109之各個互不干涉的位置的突起部111，事先設置有溝槽112等的形狀，則可從保持有潤滑油之溝槽112對複數個軸承109之各個供給潤滑油，而進一步抑制外輪部與凸輪肋104之間的摩擦。Although each of the plurality of bearings 109 includes a shaft member, an outer ring portion that can rotate along the outer peripheral surface of the shaft member, etc., it may be a bearing that includes rolling contact between the shaft member and the outer ring portion, or the like, or It is a bearing that does not include sliding contact such as rollers. Furthermore, if the protrusion 111 of the cam groove 110 arranged at the position where the cam rib 104 and the plurality of bearings 109 do not interfere with each other is provided with a groove 112 and the like in advance, it can be changed from the groove holding the lubricating oil. The groove 112 supplies lubricating oil to each of the plurality of bearings 109 to further suppress the friction between the outer ring portion and the cam rib 104.

凸輪102並非僅限於如圖1~10的凹面桶狀凸輪，亦可是例如圖11顯示的圓柱凸輪(cylindrical cam,barrel cam)113、或是圖12顯示的桶狀凸輪(globoidal cam)114等具有螺旋形狀之凸輪肋之其他凸輪。再者，即使是圓柱凸輪、桶狀凸輪，動作亦與前述一致。The cam 102 is not limited to the concave barrel cam as shown in Figs. 1-10, and may be, for example, a cylindrical cam (cylindrical cam, barrel cam) 113 shown in Fig. 11, or a barrel cam (globoidal cam) 114 shown in Fig. 12, etc. Other cams with spiral cam ribs. Furthermore, even if it is a cylindrical cam or a barrel cam, the action is the same as described above.

凸輪102與旋轉構件107的位置關係依據凸輪102、113、114的形狀而定，不僅可與旋轉構件107外接，亦可與之內接。The positional relationship between the cam 102 and the rotating member 107 depends on the shape of the cams 102, 113, and 114, and can not only be circumscribed to the rotating member 107, but also internally connected to it.

前述內容雖是就特定之實施例而為之，但該技術領域中具有通常知識者明瞭本發明不限定於其內容，可在本發明之原理與附加之申請專利範圍之範圍內進行各種變更及修改。Although the foregoing content is based on specific embodiments, those with ordinary knowledge in the technical field understand that the present invention is not limited to its content, and various changes and changes can be made within the scope of the principle of the present invention and the scope of the appended patent application. modify.

101‧‧‧滾輪齒輪凸輪機構 102‧‧‧凸輪 103‧‧‧凸輪軸線 104‧‧‧凸輪肋 104a‧‧‧第1凸輪肋 104b‧‧‧第2凸輪肋 104c‧‧‧第3凸輪肋 105‧‧‧第1凸輪肋面 106‧‧‧第2凸輪肋面 107‧‧‧旋轉構件 108‧‧‧旋轉構件軸線 109‧‧‧軸承 109a‧‧‧第1軸承 109b‧‧‧第2軸承 109c‧‧‧第3軸承 109d‧‧‧第4軸承 109e‧‧‧第5軸承 110‧‧‧凸輪溝 111‧‧‧突起部 112‧‧‧溝槽 113‧‧‧圓柱凸輪 114‧‧‧桶狀凸輪101‧‧‧Roller gear cam mechanism 102‧‧‧Cam 103‧‧‧Cam axis 104‧‧‧Cam rib 104a‧‧‧The first cam rib 104b‧‧‧Second cam rib 104c‧‧‧3rd cam rib 105‧‧‧The first cam rib 106‧‧‧Second cam rib 107‧‧‧Rotating member 108‧‧‧Rotating member axis 109‧‧‧Bearing 109a‧‧‧The first bearing 109b‧‧‧Second bearing 109c‧‧‧3rd bearing 109d‧‧‧4th bearing 109e‧‧‧5th bearing 110‧‧‧Cam groove 111‧‧‧Protrusion 112‧‧‧Groove 113‧‧‧Cylindrical Cam 114‧‧‧Barrel Cam

圖1是本發明之滾輪齒輪凸輪機構從正面看的概略圖。 圖2是本發明之滾輪齒輪凸輪機構從側面看的概略圖。 圖3是表示本發明之滾輪齒輪凸輪機構中凸輪肋與軸承之接觸狀態從正面看的放大概略圖。 圖4是表示本發明之滾輪齒輪凸輪機構中凸輪肋與軸承之接觸狀態從上面看的放大概略圖。 圖5是表示本發明之滾輪齒輪凸輪機構中凸輪肋與軸承之接觸狀態的展開圖。 圖6是本發明之其他之滾輪齒輪凸輪機構從正面看的概略圖。 圖7是本發明之進一步其他之滾輪齒輪凸輪機構的部分立體圖。 圖8是表示本發明之進一步其他之滾輪齒輪凸輪機構中凸輪肋與軸承之接觸狀態從正面看的放大概略圖。 圖9是本發明之更進一步其他之滾輪齒輪凸輪機構從正面看的概略圖。 圖10是本發明之更進一步其他之滾輪齒輪凸輪機構從側面看的概略圖。 圖11是將本發明之滾輪齒輪凸輪機構的凸輪作成圓柱凸輪(cylindrical cam,barrel cam)時從正面看的概略圖。 圖12是將本發明之滾輪齒輪凸輪機構的凸輪作成桶狀凸輪(globoidal cam)時從正面看的概略圖。Fig. 1 is a schematic view of the roller gear cam mechanism of the present invention viewed from the front. Figure 2 is a schematic view of the roller gear cam mechanism of the present invention viewed from the side. Fig. 3 is an enlarged schematic view from the front showing the contact state between the cam rib and the bearing in the roller gear cam mechanism of the present invention. Fig. 4 is an enlarged schematic view from above showing the contact state between the cam rib and the bearing in the roller gear cam mechanism of the present invention. Fig. 5 is an expanded view showing the contact state between the cam rib and the bearing in the roller gear cam mechanism of the present invention. Fig. 6 is a schematic view of another roller gear cam mechanism of the present invention viewed from the front. Fig. 7 is a partial perspective view of still another roller gear cam mechanism of the present invention. Fig. 8 is an enlarged schematic view from the front showing the contact state between the cam rib and the bearing in the roller gear cam mechanism of the present invention. Fig. 9 is a schematic view from the front of another roller gear cam mechanism according to the present invention. Fig. 10 is a schematic view from the side of another roller gear cam mechanism of the present invention. 11 is a schematic view from the front when the cam of the roller gear cam mechanism of the present invention is made into a cylindrical cam (cylindrical cam, barrel cam). Fig. 12 is a schematic view from the front when the cam of the roller gear cam mechanism of the present invention is a globoidal cam.

101‧‧‧滾輪齒輪凸輪機構 101‧‧‧Roller gear cam mechanism

102‧‧‧凸輪 102‧‧‧Cam

103‧‧‧凸輪軸線 103‧‧‧Cam axis

104‧‧‧凸輪肋 104‧‧‧Cam rib

104a‧‧‧第1凸輪肋 104a‧‧‧The first cam rib

104b‧‧‧第2凸輪肋 104b‧‧‧Second cam rib

104c‧‧‧第3凸輪肋 104c‧‧‧3rd cam rib

105‧‧‧第1凸輪肋面 105‧‧‧The first cam rib

106‧‧‧第2凸輪肋面 106‧‧‧Second cam rib

107‧‧‧旋轉構件 107‧‧‧Rotating member

108‧‧‧旋轉構件軸線 108‧‧‧Rotating member axis

109‧‧‧軸承 109‧‧‧Bearing

109a‧‧‧第1軸承 109a‧‧‧The first bearing

109b‧‧‧第2軸承 109b‧‧‧Second bearing

109c‧‧‧第3軸承 109c‧‧‧3rd bearing

109d‧‧‧第4軸承 109d‧‧‧4th bearing

109e‧‧‧第5軸承 109e‧‧‧5th bearing

Claims (8)

一種滾輪齒輪凸輪機構，包含：凸輪，具有螺旋形狀之凸輪肋，可以凸輪軸線為中心旋轉；及旋轉構件，是可以正交於前述凸輪軸線的旋轉構件軸線為中心而旋轉的旋轉構件，且沿著前述旋轉構件之外周方向配置的複數個軸承之各個可對前述凸輪肋進行滾動接觸，該滾輪齒輪凸輪機構之特徵在於：前述複數個軸承當中，由相鄰的2個軸承所構成的第1軸承對，會以夾入前述凸輪肋的方式滾動接觸於前述凸輪肋，且在前述凸輪以前述凸輪軸線為中心朝一方向旋轉而藉此將前述凸輪之輸入扭矩傳達至前述旋轉構件、或是前述旋轉構件以前述旋轉構件軸線為中心朝一方向旋轉而藉此將前述旋轉構件之輸入扭矩傳達至前述凸輪的情形下，在前述第1軸承對滾動接觸於前述凸輪肋的期間，前述第1軸承對之各軸承會以對前述旋轉構件分別朝相反的一方向旋轉的方式，對前述凸輪肋進行滾動接觸，前述凸輪肋是具有第1端部、中央部、及第2端部，於前述第1端部，前述第1軸承對的各個與前述凸輪肋之間有間隙，而前述第1軸承對與前述凸輪肋不接觸，隨著從前述第1端部朝向前述中央部，前述第1軸承對的各個與前述凸輪肋之間的間隙減少，且於前述中央部，前述第1軸承對之各個與前述凸輪肋之間的間隙會消失，前述第1軸承對是以夾入前述凸輪肋的方式對前述凸輪肋進行滾動接觸。 A roller gear cam mechanism, comprising: a cam, a cam rib with a spiral shape, which can rotate around the cam axis; and a rotating member, which is a rotating member that can rotate around the axis of the rotating member orthogonal to the aforementioned cam axis, and Each of the plural bearings arranged in the outer circumferential direction of the rotating member can make rolling contact with the cam ribs. The roller gear cam mechanism is characterized in that among the plural bearings, the first one is composed of two adjacent bearings. The bearing pair rolls in contact with the cam ribs by sandwiching the cam ribs, and the cam rotates in one direction around the cam axis, thereby transmitting the input torque of the cam to the rotating member or When the rotating member rotates in one direction around the axis of the rotating member to transmit the input torque of the rotating member to the cam, while the first bearing pair is in rolling contact with the cam rib, the first bearing pair Each bearing will make rolling contact with the cam rib by rotating the rotating member in the opposite direction. The cam rib has a first end, a center, and a second end. At the end, there is a gap between each of the first bearing pair and the cam rib, and the first bearing pair is not in contact with the cam rib. As it moves from the first end to the center, the first bearing pair The gap between each of and the cam rib is reduced, and at the center, the gap between each of the first bearing pair and the cam rib disappears, and the first bearing pair sandwiches the cam rib The aforementioned cam ribs are brought into rolling contact. 如請求項1之滾輪齒輪凸輪機構，其中前述凸輪肋之厚度是從前述第1端部朝向前述中央部增加至某範圍。 The roller gear cam mechanism of claim 1, wherein the thickness of the cam rib increases to a certain range from the first end toward the center. 如請求項2之滾輪齒輪凸輪機構，其中前述凸輪肋之厚度是從前述第2端部朝向前述中央部增加至某範圍。 The roller gear cam mechanism of claim 2, wherein the thickness of the cam rib increases to a certain range from the second end toward the center. 如請求項1之滾輪齒輪凸輪機構，其中前述複數個軸承當中由相鄰的2個軸承所構成的第2軸承對，會以夾入前述凸輪肋的方式滾動接觸於前述凸輪肋。 For example, the roller gear cam mechanism of claim 1, wherein a second bearing pair composed of two adjacent bearings among the plurality of bearings will roll in contact with the cam ribs by sandwiching the cam ribs. 如請求項1之滾輪齒輪凸輪機構，其中前述凸輪是於設置在前述凸輪肋之間的凸輪溝具有突起部，該突起部在前述凸輪以前述凸輪軸線為中心旋轉的情形下，不接觸於前述複數個軸承。 The roller gear cam mechanism of claim 1, wherein the cam has a protrusion in a cam groove provided between the cam ribs, and the protrusion does not contact the aforementioned cam when the cam rotates around the cam axis. Plural bearings. 如請求項5之滾輪齒輪凸輪機構，其於前述突起部設置有溝槽。 For example, the roller gear cam mechanism of claim 5 is provided with a groove in the aforementioned protrusion. 如請求項1至6中任一項之滾輪齒輪凸輪機構，其中前述複數個軸承之各個是滾輪從動件或凸輪從動件。 Such as the roller gear cam mechanism of any one of claims 1 to 6, wherein each of the aforementioned plural bearings is a roller follower or a cam follower. 如請求項1至6中任一項之滾輪齒輪凸輪機構，其中前述複數個軸承之各個是滾動接觸之軸承或滑動接觸之軸承。 Such as the roller gear cam mechanism of any one of claims 1 to 6, wherein each of the aforementioned plural bearings is a rolling contact bearing or a sliding contact bearing.
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TW201725334A (en) 2017-07-16
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