TW201800674A - Ball spline shaft structure and manufacturing method thereof characterized by utilizing two sets of grinders to allow the circumference of the spline shaft to be formed with four ball grooves evenly distributed and spaced from each other with an included angle of 90 degrees - Google Patents
Ball spline shaft structure and manufacturing method thereof characterized by utilizing two sets of grinders to allow the circumference of the spline shaft to be formed with four ball grooves evenly distributed and spaced from each other with an included angle of 90 degrees Download PDFInfo
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本發明係有關一種滾珠花鍵軸,尤指一種用於套設一滾珠襯套,使滾珠襯套的滾珠容設在花鍵軸的滾珠溝槽中滾動,使滾珠襯套沿著花鍵軸軸向移動的滾珠花鍵軸結構及其製造方法。The present invention relates to a ball spline shaft, in particular to a ball bushing, which is used to roll a ball bushing in a ball groove of a spline shaft, so that the ball bushing is along the spline shaft. Structure of axially moving ball spline shaft and manufacturing method thereof.
花鍵軸係一種直線導引構件,用於活動地套設一滾珠襯套,滾珠襯套的內孔壁排列地設有多數滾珠,滾珠在滾珠襯套的內孔壁與花鍵軸圓周面的滾珠溝槽之間滾動,進而使滾珠襯套與花鍵軸能相對軸向移動。習知的花鍵軸構造如圖1所示,為一種適應在高扭矩的花鍵軸10a,在花鍵軸10a的圓周面以120度等角度平均分佈有二道為一組的六道滾珠溝槽20a,用以提供滾珠襯套內的滾珠沿著該滾珠溝槽20a滾動;該花鍵軸10a磨削加工其圓周面的滾珠溝槽20a時,如圖2所示,係以三個呈120度等角度平均分佈的砂輪30同時進行磨削,因此需要使用三組砂輪30所構成的特殊研磨機具,其三組砂輪30必須校準到花鍵軸10a的同一軸心,導致校準作業相當困難,因而整個製程較為繁瑣。The spline shaft is a linear guide member for movably sleeve a ball bushing. The inner hole wall of the ball bushing is provided with a plurality of balls arranged in a row. The ball is on the inner hole wall of the ball bushing and the peripheral surface of the spline shaft. Rolling between the ball grooves, so that the ball bushing and the spline shaft can move relatively axially. The conventional spline shaft structure is shown in Fig. 1. It is a spline shaft 10a adapted to high torque. On the circumferential surface of the spline shaft 10a, 120 ball grooves are evenly distributed at a uniform angle of 120 degrees. The groove 20a is used to provide the ball in the ball bushing to roll along the ball groove 20a. When the spline shaft 10a grinds the ball groove 20a on the circumferential surface, as shown in FIG. Grinding wheels 30 evenly distributed at an equal angle of 120 degrees are grinding at the same time, so special grinding tools composed of three sets of grinding wheels 30 are required. The three sets of grinding wheels 30 must be aligned to the same axis of the spline shaft 10a, which makes calibration very difficult. , So the entire process is more complicated.
為了克服上述三組砂輪30磨削加工之前,校準作業困難與製程繁瑣的問題,習知花鍵軸從結構上改進的方式如圖3所示,其改為在花鍵軸10b的圓周面的二側分別設有二道滾珠溝槽20b,從花鍵軸10b斷面方向的結構而言,同一側的二道滾珠溝槽20b之間的距離為A,二側的滾珠溝槽20b之間的距離為B,其中距離B大於距離A;藉此,參閱圖4所示,只要在研磨機具上設置二組砂輪40,就能在花鍵軸10b的圓周面的二側,分別磨削加工出二道滾珠溝槽20b,因此磨削前的校準的工作相對較為簡易。但是,將四道滾珠溝槽20b集中在花鍵軸10b的二側(即一側為二道滾珠溝槽20b),等於只在花鍵軸10b的二側施加磨削加工,而磨削加工中砂輪與花鍵軸10b之間的磨擦部位產生的溫度一般約有500~800℃,其磨削熱度傳入花鍵軸10b引起的工件溫升,造成二側與上、下面受熱不均勻的情況,將影響滾珠溝槽20b的形狀和尺寸精度,特別是軸心設有一通孔101b的管狀花鍵軸,更容易受到影響。In order to overcome the problems of difficult calibration and tedious process before the above-mentioned three groups of grinding wheels 30, the conventional method of improving the structure of the spline shaft is shown in FIG. 3, which is changed to two on the circumferential surface of the spline shaft 10b. Two ball grooves 20b are provided on each side. From the structure of the spline shaft 10b, the distance between the two ball grooves 20b on the same side is A, and the distance between the two ball grooves 20b on the same side is A. The distance is B, where the distance B is greater than the distance A. As shown in FIG. 4, as long as two sets of grinding wheels 40 are provided on the grinding tool, the two sides of the circumferential surface of the spline shaft 10 b can be ground and processed separately. The two ball grooves 20b are relatively easy to calibrate before grinding. However, concentrating the four ball grooves 20b on the two sides of the spline shaft 10b (that is, two ball grooves 20b on one side) is equivalent to applying grinding processing on only two sides of the spline shaft 10b, and grinding processing The temperature between the friction part between the middle grinding wheel and the spline shaft 10b is generally about 500-800 ° C, and the grinding heat is transmitted to the workpiece temperature caused by the spline shaft 10b, which causes uneven heating on the two sides and above and below. The situation will affect the shape and dimensional accuracy of the ball groove 20b, especially the tubular spline shaft with a through hole 101b at its axis, which is more likely to be affected.
另外,參閱圖5所示,上述該花鍵軸10b若用於承載垂直方向的負荷W1時,因為二道滾珠溝槽20b偏向位於該花鍵軸10b二側,因此只有該花鍵軸10b中心線上方的左右二滾珠溝槽20b能用於支撐滾珠襯套50的滾珠60,中心線下方的二滾珠溝槽20b無承載作用,而且上方的左右二滾珠溝槽20b中用於支撐滾珠60的溝面只有剩下1/2的弧面,因此其承載徑向負荷W1的能力有限;又若把圖5中花鍵軸10b轉90度方向安裝(如圖6所示),如此雖然能使該花鍵軸10b中心線上方的二滾珠溝槽20b的溝面都能支撐來自滾珠60的負荷(即承載垂直方向的負荷W1),但是圖6花鍵軸10b中心線右側的二滾珠溝槽20b用於抵抗橫向外力或承載水平負荷W2的能力又不足,而圖6花鍵軸10b中心線左側的滾珠溝槽20b無法承載來自右側的水平負荷W2,如此造成產業應用時許多困擾及應用上的限制。In addition, referring to FIG. 5, if the spline shaft 10b is used to carry a load W1 in the vertical direction, the two ball grooves 20b are biased to the two sides of the spline shaft 10b, so only the center of the spline shaft 10b The two left and right ball grooves 20b above the line can be used to support the balls 60 of the ball bushing 50. The two ball grooves 20b below the center line have no load bearing effect, and the two left and right ball grooves 20b above are used to support the ball 60. The groove surface has only half of the arc surface, so its ability to carry radial load W1 is limited; and if the spline shaft 10b in FIG. 5 is rotated to 90 degrees and installed (as shown in FIG. 6), The groove surface of the two ball grooves 20b above the center line of the spline shaft 10b can support the load from the ball 60 (that is, the load W1 in the vertical direction), but the two ball grooves to the right of the center line of the spline shaft 10b The ability of 20b to resist lateral external forces or to carry horizontal load W2 is insufficient, and the ball groove 20b on the left side of the centerline of the spline shaft 10b in FIG. 6 cannot carry the horizontal load W2 from the right side, which causes many problems and applications in industrial applications. limits.
本發明之目的在提供一種滾珠花鍵軸結構及其製造方法,其通過花鍵軸圓周面的滾珠溝槽設計,達到改善磨削滾珠溝槽造成熱應變不均的情況,能夠平均負載垂向與橫向負載,並提升花鍵軸精密度與簡化磨削工設備等目的。The object of the present invention is to provide a ball spline shaft structure and a manufacturing method thereof, which can improve the situation of uneven thermal strain caused by grinding the ball groove through the ball groove design of the circumferential surface of the spline shaft, and can evenly load the vertical direction. With the lateral load, and improve the precision of the spline shaft and simplify the grinding equipment and other purposes.
為了達到上述目的,本發明之滾珠花鍵軸結構,其較佳技術方案包含:該花鍵軸用於套設一滾珠襯套,該滾珠襯套內部的滾珠容設在該花鍵軸圓周面上的滾珠溝槽中滾動,使該滾珠襯套沿著該花鍵軸軸向移動,其特徵在於:該花鍵軸為一圓桿,該花鍵軸的圓周面上凹設有四道軸向延伸的該滾珠溝槽,該四道滾珠溝槽彼此平行,且該四道滾珠溝槽在斷面方向呈彼此90度的夾角平均分佈在該花鍵軸的圓周面上。In order to achieve the above object, a preferred technical solution of the ball spline shaft structure of the present invention includes: the spline shaft is used to sleeve a ball bushing, and the balls inside the ball bushing are accommodated on the circumferential surface of the spline shaft; Rolling in the ball groove on the upper side causes the ball bush to move axially along the spline shaft, which is characterized in that the spline shaft is a round rod, and four axial directions are recessed on the circumferential surface of the spline shaft. The extended ball grooves, the four ball grooves are parallel to each other, and the four ball grooves are evenly distributed on the circumferential surface of the spline shaft at an angle of 90 degrees to each other in the cross-sectional direction.
上述之滾珠花鍵軸結構中,該花鍵軸中央設有一連通二端的軸向通孔。In the above-mentioned ball spline shaft structure, the center of the spline shaft is provided with an axial through hole communicating with two ends.
上述之滾珠花鍵軸結構中,該滾珠溝槽為半圓弧形或哥德弧形凹槽。In the above-mentioned ball spline shaft structure, the ball groove is a semi-circular arc or a Goth arc groove.
為了達到上述目的,本發明滾珠花鍵軸結構之製造方法,其較佳技術方案包含:(a)使一花鍵軸固定在一研磨機具上,該研磨裝置設有位於該花鍵軸二側轉動的二組砂輪,各該砂輪的圓周面凸出二磨削部,該二磨削部之間的距離等於二個該滾珠溝槽彼此之間的夾角為90度的距離;(b)該花鍵軸被該研磨機具的輸送台以該花鍵軸的軸向方向輸送移動,並使該二磨削部之間的中間點對準該花鍵軸的中心;(c)該二組砂輪同步靠向該花鍵軸,使該二組砂輪的二磨削部在該花鍵軸二側的圓周面分別研磨出二個該滾珠溝槽,進而使該花鍵軸的圓周面形成四個彼此呈90度夾角平均分佈的該滾珠溝槽。In order to achieve the above object, the method for manufacturing a ball spline shaft structure of the present invention, the preferred technical solution includes: (a) fixing a spline shaft on a grinding machine, and the grinding device is provided on two sides of the spline shaft The two sets of rotating grinding wheels each have two grinding parts protruding from the circumferential surface of the grinding wheel, and the distance between the two grinding parts is equal to a distance of 90 degrees between the two ball grooves; (b) the The spline shaft is conveyed and moved in the axial direction of the spline shaft by the conveying table of the grinding tool, and the intermediate point between the two grinding parts is aligned with the center of the spline shaft; (c) the two sets of grinding wheels Leaning against the spline shaft synchronously, the two grinding parts of the two sets of grinding wheels were respectively ground on the circumferential surface on the two sides of the spline shaft to form two ball grooves, thereby forming four circumferential surfaces of the spline shaft. The ball grooves are evenly distributed at an angle of 90 degrees with each other.
本發明之滾珠花鍵軸結構及其製造方法,使四道該滾珠溝槽彼此之間的夾角為90度,能夠達到以下的功效:According to the ball spline shaft structure and the manufacturing method of the invention, the angle between the four grooves of the ball is 90 degrees, and the following effects can be achieved:
(一)磨削加工製程簡化並降低成本:本發明該花鍵軸的圓周面上的四道該滾珠溝槽彼此之間的夾角為90度,因此可以使用二組砂輪從該花鍵軸的二側進行磨削加工,每一組砂輪的二個磨削部可磨削出一側的二道滾珠溝槽,避免使用習知三組砂輪的磨削製程,克服校準作業繁瑣的問題,如此可以一次加工就磨削出該花鍵軸總共四道的滾珠溝槽,藉此達到磨削加工製程簡化並降低製造成本的功效。(1) The grinding process is simplified and the cost is reduced: the angle between the four grooves of the ball groove on the circumferential surface of the spline shaft of the present invention is 90 degrees, so two sets of grinding wheels can be used from the spline shaft. Grinding is performed on two sides, and the two grinding sections of each group of wheels can grind two ball grooves on one side, avoiding the grinding process of the conventional three groups of wheels, which overcomes the tedious problem of calibration operations. A total of four ball grooves of the spline shaft can be ground in one operation, thereby achieving the effect of simplifying the grinding process and reducing manufacturing costs.
(二)改善磨削滾珠溝槽造成熱應變不均的情況:本發明該花鍵軸的圓周面上的四道該滾珠溝槽彼此之間的夾角為90度,當二組砂輪在進行磨削時,以平均90度的角度磨削該花鍵軸的圓周面上的四個點,如此克服習知花鍵軸磨削時受熱應變不均的情況,達到提升滾珠溝槽精密度的功效。(2) Improve the situation of uneven thermal strain caused by grinding ball grooves: The angle between the four grooves of the ball groove on the circumferential surface of the spline shaft according to the present invention is 90 degrees, and when two sets of grinding wheels are grinding When cutting, the four points on the circumferential surface of the spline shaft are ground at an average angle of 90 degrees, so as to overcome the uneven thermal strain of the conventional spline shaft during grinding, and achieve the effect of improving the accuracy of the ball groove.
茲依附圖實施例將本發明之結構特徵及其他之作用、目的詳細說明如下:The structural features and other functions and purposes of the present invention are described in detail with reference to the embodiments of the drawings as follows:
參閱圖7及圖8所示,本發明之滾珠花鍵軸結構,其較佳的具體實施例包含:一用於提供滾珠襯套50直線活動套設的花鍵軸1,該花鍵軸1為一實心圓桿,或中央具有一連通二端的軸向通孔11的管體;特別是,一併參閱圖7及圖10所示,該花鍵軸1的圓周面上凹設有四道軸向延伸的該滾珠溝槽12,該四道滾珠溝槽12彼此平行,且該四道滾珠溝槽12在斷面方向呈彼此90度的夾角平均分佈在該花鍵軸1的圓周面上,各該滾珠溝槽12為半圓弧形或哥德弧形凹槽,藉此構成提供滾珠襯套50直線活動套設的花鍵軸1;再一併參閱圖7及圖9所示,當該滾珠襯套50套設在該花鍵軸1時,使該滾珠襯套50內部的四排滾珠60容設在該花鍵軸1圓周面上的四道滾珠溝槽12中滾動,使該滾珠襯套50能夠沿著該花鍵軸1軸向往覆移動。Referring to FIG. 7 and FIG. 8, a preferred embodiment of the ball spline shaft structure of the present invention includes: a spline shaft 1 for providing a ball bushing 50 linearly sleeved, the spline shaft 1 It is a solid round rod, or a pipe body with an axial through hole 11 communicating with two ends in the center; in particular, referring to FIG. 7 and FIG. 10 together, the spline shaft 1 is provided with four recesses on the circumferential surface. The ball grooves 12 extending in the axial direction, the four ball grooves 12 are parallel to each other, and the four ball grooves 12 are evenly distributed on the circumferential surface of the spline shaft 1 at an angle of 90 degrees to each other in the cross-sectional direction. Each of the ball grooves 12 is a semi-circular arc or a Gothic arc groove, thereby forming a spline shaft 1 that provides a linear movable sleeve of the ball bushing 50; referring to FIG. 7 and FIG. 9 together, when When the ball bushing 50 is sleeved on the spline shaft 1, the four rows of balls 60 inside the ball bushing 50 are accommodated in the four ball grooves 12 on the peripheral surface of the spline shaft 1 to roll, The ball bushing 50 can move axially along the spline shaft 1.
再參閱圖11所示,本發明花鍵軸之製造方法,其較佳的實施例包含:使一花鍵軸1固定在一研磨機具上,該花鍵軸1被該研磨機具以軸向輸送移動,該研磨裝置設有位於該花鍵軸1二側轉動的二組砂輪40,各該砂輪40的圓周面凸出二磨削部401,該二磨削部401之間的距離C等於二個該滾珠溝槽12彼此之間的夾角為90度的距離D,該二磨削部401之間的中間點對準該花鍵軸1的中心,藉此使該二組砂輪40同步靠向該花鍵軸1的二側,使該二組砂輪40的二磨削部401在該花鍵軸1二側的圓周面分別研磨出二個該滾珠溝槽12,進而使該花鍵軸1的圓周面形成四個彼此呈90度夾角平均分佈的該滾珠溝槽12。Referring to FIG. 11 again, the method for manufacturing a spline shaft according to the present invention, a preferred embodiment thereof includes: fixing a spline shaft 1 on a grinding machine, and the spline shaft 1 is axially conveyed by the grinding machine Moving, the grinding device is provided with two sets of grinding wheels 40 rotating on the two sides of the spline shaft 1, the circumferential surface of each grinding wheel 40 protrudes from two grinding portions 401, and the distance C between the two grinding portions 401 is equal to two The angle between the two ball grooves 12 is a distance D of 90 degrees, and the intermediate point between the two grinding portions 401 is aligned with the center of the spline shaft 1, so that the two sets of grinding wheels 40 are simultaneously moved toward each other. On the two sides of the spline shaft 1, the two grinding portions 401 of the two sets of grinding wheels 40 are respectively polished on the circumferential surface of the two sides of the spline shaft 1 into the two ball grooves 12, so that the spline shaft 1 is further grounded. Four ball grooves 12 are formed on the circumferential surface of the ball grooves at an angle of 90 degrees.
本發明之滾珠花鍵軸結構及其製造方法,可以應用在水平關節機器手臂(SCARA)末端的垂直軸(未圖示),通過該滾珠襯套50帶動該花鍵軸1與夾爪轉動(在其他應用領域可由該花鍵軸1帶動該滾珠襯套50轉動),而且該滾珠襯套50內的滾珠60均可沿著各該滾珠溝槽12滾動,因此使該花鍵軸1與該滾珠襯套50相對直線移動;而當該花鍵軸1承受徑向扭力而轉動時,上述四道滾珠溝槽12的平均設置方式,其力矩係平均地施力在該花鍵軸1的圓周,平均受力的結果將能夠延長其使用壽命。再者,本發明可使用二組砂輪40從該花鍵軸1的二側磨削出滾珠溝槽12,比起傳統的三組砂輪30加工方式,本發明加工機更容易備齊,不需專用機即可進行生產,除了能夠降低製造成本之外,在產業的競爭力上,已達十足的進展而有強大的產業競爭力。另外,以對向兩研磨砂輪40同時進給磨削出四道滾珠溝槽12的方式,每一滾珠溝槽12的成型精度能夠更容易控制,因此其精密度會比傳統加工方式還要提升。The ball spline shaft structure and the manufacturing method thereof of the present invention can be applied to a vertical shaft (not shown) at the end of a horizontal joint robotic arm (SCARA). The ball bushing 50 drives the spline shaft 1 and the gripper to rotate ( In other fields of application, the ball bushing 50 can be driven by the spline shaft 1), and the balls 60 in the ball bushing 50 can roll along the ball grooves 12, so the spline shaft 1 and the The ball bushing 50 moves relatively linearly; and when the spline shaft 1 rotates under a radial torsion, the above-mentioned four ball grooves are arranged in an average manner, and the torque is evenly applied to the circumference of the spline shaft 1 The result of average stress will be able to extend its service life. Furthermore, the present invention can use two sets of grinding wheels 40 to grind the ball grooves 12 from the two sides of the spline shaft 1. Compared with the traditional three-group grinding wheel 30 processing method, the processing machine of the present invention is easier to prepare and does not require Dedicated machines can be used for production. In addition to reducing manufacturing costs, the industry's competitiveness has made full progress and has strong industrial competitiveness. In addition, in the manner that four ball grooves 12 are ground and fed simultaneously by the two opposite grinding wheels 40, the forming accuracy of each ball groove 12 can be more easily controlled, so its precision will be improved compared to the traditional processing method. .
本發明該花鍵軸1的四道滾珠溝槽12平均90度分佈在圓周面,不論哪一個安裝應用方向,都能平均承載垂直負荷W1與水平(橫向)負荷W2。詳言之,如圖9所示,假設安裝應用時的四道滾珠溝槽12為第一角度(類似斷面方向呈十字排列的狀態),其最上方的一滾珠溝槽12的全部溝面能承受來自滾珠60的垂直負荷W1,而二側的滾珠溝槽12的1/2溝面(總合就等於一個全部溝面),也能承受來自滾珠60的垂直負荷W1;若為水平負荷W2,不論來自左右哪一方向,其一側的滾珠溝槽12的全部溝面都能夠承受來自滾珠60的水平負荷W2,而上下二滾珠溝槽12的1/2溝面(總合就等於一個全部溝面),也能承受來自滾珠60的水平負荷W2,因此其雙向承載負荷W1、W2的機械強度相同。再如圖12所示,假設安裝應用時的四道滾珠溝槽12為第二角度(即圖12中的花鍵軸1再轉90度後,類似斷面方向呈X字排列的狀態),不論垂直負荷W1或水平負荷W2,均有二道滾珠溝槽12的全部溝面能用來承受來自滾珠60的負荷W1、W2,其雙向承載負荷W1、W2的強度也是相同,由此足見本發明之花鍵軸1比圖3至圖6所示習知第二型花鍵軸更為進步。According to the present invention, the four ball grooves 12 of the spline shaft 1 are distributed on the circumferential surface at an average angle of 90 degrees. The vertical load W1 and the horizontal (transverse) load W2 can be carried on average regardless of the installation application direction. In detail, as shown in FIG. 9, it is assumed that the four ball grooves 12 at the time of installation and application are at a first angle (similar to the cross-sectional direction of the cross-section), and the entire groove surface of the uppermost ball groove 12 is Can withstand the vertical load W1 from the ball 60, and the 1/2 groove surface of the ball groove 12 on the two sides (the total is equal to one groove surface) can also withstand the vertical load W1 from the ball 60; if it is a horizontal load W2, no matter which direction is left and right, all the groove surfaces of the ball groove 12 on one side can bear the horizontal load W2 from the ball 60, and the 1/2 groove surface of the upper and lower ball grooves 12 (the total is equal to One full groove surface) can also withstand the horizontal load W2 from the balls 60, so the mechanical strength of the two-way load W1 and W2 is the same. As shown in FIG. 12, it is assumed that the four ball grooves 12 are installed at a second angle when the application is installed (that is, the spline shaft 1 in FIG. 12 is rotated 90 degrees again, and the cross-section direction is similar to the state of the X-shape arrangement). Regardless of the vertical load W1 or the horizontal load W2, all the groove surfaces of the two ball grooves 12 can be used to bear the loads W1 and W2 from the balls 60. The strength of the two-way load W1 and W2 is also the same. The inventive spline shaft 1 is more advanced than the conventional second type spline shaft shown in FIGS. 3 to 6.
綜上所述,本發明之滾珠花鍵軸結構及其製造方法,已確具實用性與創作性,其技術手段之運用亦出於新穎無疑,且功效與發明目的誠然符合,已稱合理進步至明。為此,依法提出發明專利申請,惟懇請 鈞局惠予詳審,並賜准專利為禱,至感德便。In summary, the ball spline shaft structure and its manufacturing method of the present invention are indeed practical and creative, and the use of its technical means is also novel and undoubted, and its efficacy is in line with the purpose of the invention, which has been called a reasonable progress. To Ming. To this end, an application for an invention patent was filed in accordance with the law, but I would like to ask Jun Bureau for detailed review and to grant the patent as a prayer.
[習知部分]
10a、10b‧‧‧花鍵軸
20a、20b‧‧‧滾珠溝槽
30、40‧‧‧砂輪
A、B‧‧‧距離
[本發明]
1‧‧‧花鍵軸
11‧‧‧軸向通孔
12‧‧‧滾珠溝槽
40‧‧‧砂輪
401‧‧‧磨削部
50‧‧‧滾珠襯套
60‧‧‧滾珠
C、D‧‧‧距離
W1‧‧‧垂直負荷
W2‧‧‧水平負荷[Learning section]
10a, 10b ‧‧‧ spline shaft
20a, 20b ‧‧‧ Ball groove
30, 40‧‧‧ Grinding wheels
A, B‧‧‧ distance
[this invention]
1‧‧‧ spline shaft
11‧‧‧Axial through hole
12‧‧‧ball groove
40‧‧‧ Grinding wheel
401‧‧‧Grinding Department
50‧‧‧ball bush
60‧‧‧ball
C, D‧‧‧distance
W1‧‧‧Vertical load
W2‧‧‧Horizontal load
圖1為習知第一型花鍵軸之端部構造示意圖。 圖2為圖1第一型花鍵軸之磨削加工示意圖。 圖3為習知第二型花鍵軸之端部構造示意圖。 圖4為圖3第二型花鍵軸之磨削加工示意圖。 圖5為圖3第二型花鍵軸垂直負荷之示意圖。 圖6為圖3第二型花鍵軸轉90度後垂直及橫向負荷之示意圖。 圖7為本發明花鍵軸與滾珠襯套結合之立體示意圖。 圖8為本發明花鍵軸與滾珠襯套結合之側視示意圖。 圖9為本發明花鍵軸與滾珠襯套結合及承載負荷之示意圖。 圖10為本發明花鍵軸之斷面示意圖。 圖11為本發明花鍵軸之磨削加工方式示意圖。 圖12為本發明花鍵軸承載負荷之示意圖。FIG. 1 is a schematic diagram of an end structure of a conventional first type spline shaft. FIG. 2 is a schematic diagram of the grinding process of the first spline shaft of FIG. 1. FIG. 3 is a schematic diagram of an end structure of a conventional second type spline shaft. FIG. 4 is a schematic diagram of the grinding process of the second type spline shaft of FIG. 3. FIG. 5 is a schematic diagram of the vertical load of the second type of spline shaft of FIG. 3. 6 is a schematic diagram of vertical and lateral loads after the second type spline shaft of FIG. 3 is rotated by 90 degrees. FIG. 7 is a perspective view of a combination of a spline shaft and a ball bush according to the present invention. FIG. 8 is a schematic side view of a combination of a spline shaft and a ball bush according to the present invention. FIG. 9 is a schematic view showing the combination of a spline shaft and a ball bushing and bearing load according to the present invention. FIG. 10 is a schematic sectional view of a spline shaft according to the present invention. FIG. 11 is a schematic diagram of a grinding process of a spline shaft according to the present invention. FIG. 12 is a schematic diagram of a load of a spline bearing according to the present invention.
1‧‧‧花鍵軸 1‧‧‧ spline shaft
11‧‧‧軸向通孔 11‧‧‧Axial through hole
12‧‧‧滾珠溝槽 12‧‧‧ball groove
50‧‧‧滾珠襯套 50‧‧‧ball bush
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW105119826A TW201800674A (en) | 2016-06-24 | 2016-06-24 | Ball spline shaft structure and manufacturing method thereof characterized by utilizing two sets of grinders to allow the circumference of the spline shaft to be formed with four ball grooves evenly distributed and spaced from each other with an included angle of 90 degrees |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW105119826A TW201800674A (en) | 2016-06-24 | 2016-06-24 | Ball spline shaft structure and manufacturing method thereof characterized by utilizing two sets of grinders to allow the circumference of the spline shaft to be formed with four ball grooves evenly distributed and spaced from each other with an included angle of 90 degrees |
Publications (1)
Publication Number | Publication Date |
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TW201800674A true TW201800674A (en) | 2018-01-01 |
Family
ID=61725389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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TW105119826A TW201800674A (en) | 2016-06-24 | 2016-06-24 | Ball spline shaft structure and manufacturing method thereof characterized by utilizing two sets of grinders to allow the circumference of the spline shaft to be formed with four ball grooves evenly distributed and spaced from each other with an included angle of 90 degrees |
Country Status (1)
Country | Link |
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TW (1) | TW201800674A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112589608A (en) * | 2020-12-09 | 2021-04-02 | 陕西涵阳机械有限责任公司 | Grinding process of ball spline shaft raceway |
-
2016
- 2016-06-24 TW TW105119826A patent/TW201800674A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112589608A (en) * | 2020-12-09 | 2021-04-02 | 陕西涵阳机械有限责任公司 | Grinding process of ball spline shaft raceway |
CN112589608B (en) * | 2020-12-09 | 2023-08-01 | 陕西涵阳机械有限责任公司 | Grinding technology for ball spline shaft roller path |
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