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    • 2. 发明授权
    • Ball screw
    • 滚珠丝杠
    • US07207234B2
    • 2007-04-24
    • US10389906
    • 2003-03-18
    • Tsutomu OhkuboKouji Takino
    • Tsutomu OhkuboKouji Takino
    • F16H1/24
    • F16C33/3706F16H25/2238Y10T74/19753Y10T74/19767Y10T74/19777
    • In a ball screw, a nut is fitted with the outer periphery of a screw shaft, ball rolling grooves opposed to each other are formed in the screw shaft and the nut The ball rolling grooves cooperate in forming a ball rolling path therebetween. A tube as a return path disposed on the nut for connecting one end portion of the ball rolling path to the other end portion thereof, the ball rolling path and tube cooperate in forming an endless circulation path. A plurality of load balls are disposed within the endless circulation path. The position of the tube cannot be limited to a single specific position. In the ball screw, retaining pieces are respectively inserted between the mutually adjacent ones of the load balls disposed within the endless circulation path.
    • 在滚珠丝杠中,螺母与螺纹轴的外周配合,在螺杆轴和螺母中形成有相互对置的滚珠滚动槽。滚珠滚动槽在其间形成滚珠滚动路径。 作为返回路径的管,设置在用于将球滚动路径的一个端部与另一端部连接的螺母上,滚珠滚动路径和管配合形成无限循环路径。 多个负载球设置在无限循环路径内。 管的位置不能限于单个特定位置。 在滚珠丝杠中,保持片分别插入设置在无限循环路径内的相互相邻的负载球之间。
    • 3. 发明申请
    • Ball circulating member and ball screw
    • 滚珠循环构件和滚珠丝杠
    • US20060032323A1
    • 2006-02-16
    • US11198231
    • 2005-08-08
    • Tsutomu OhkuboEiji HayashiToshiharu Kajita
    • Tsutomu OhkuboEiji HayashiToshiharu Kajita
    • F16H1/24
    • F16H25/2214Y10T74/19777
    • A side cap 17 is formed by two ball circulating member-forming members 23 and 23 divided from each other along a division line PL extending in a direction of advancing of balls 15 passing through the interior of the side cap. The side cap 17 includes ball scoop-up portions 24 each for scooping-up the balls 15 from a ball track passageway 8 at one side thereof, and a ball circulating passageway 27 (formed integrally with the ball scoop-up portions) for returning the balls 15, scooped-up at the ball scoop-up portion 24, to the ball track passageway 8 at the other side thereof. The side cap has notch portions 25 formed respectively at scoop-up proximal end portions 24a thereof integrally connecting the ball scoop-up portions 24 respectively to the ball circulating passageway 27. The division line PL is formed in such a position that it beforehand cuts the notch portion 25 at the one side and the notch portion 25 at the other side.
    • 侧盖17由沿着通过侧盖内部的球15的前进方向延伸的分割线PL彼此分开的两个球循环构件形成构件23和23形成。 侧盖17包括球勺部分24,每个舀取部分24用于从其一侧的球道通道8舀取球15,以及球循环通道27(与球勺部分一体形成),用于使球 在球舀取部分24上舀起的球15在另一侧到球道通道8。 侧盖具有分别形成有将球勺部分24分别连接到球循环通道27的舀起的近端部分24a处形成的切口部分25。 分割线PL形成在预先切割一侧的切口部25和另一侧切口部25的位置。
    • 5. 发明申请
    • Ball screw device
    • 滚珠丝杠装置
    • US20070137345A1
    • 2007-06-21
    • US10577913
    • 2004-10-28
    • Eiji HayashiTsutomu Ohkubo
    • Eiji HayashiTsutomu Ohkubo
    • F16H1/24
    • F16H25/2214Y10T74/19744
    • A ball screw device includes a screw shaft having a spiral first screw groove on its outer periphery; a nut having a spiral second screw groove formed on the inner periphery corresponding to the first screw groove so as to be screw-engaged with the screw shaft and having a pair of circulating holes on the side; a plurality of rolling elements rollably mounted in a load region formed between the first and second screw grooves; and a circulating member of resin having a rolling-element circulating path formed therein which scoops up the rolling elements rolling along the load region from the one of the pair of circulating holes to be guided to the outside of the nut and returns the rolling elements from the other of the pair of circulating holes to the load region, and having both ends fit in the pair of circulating holes. The circulating member is made of resin and fixed onto the nut using a metallic holding member.
    • 滚珠丝杠装置包括在其外周上具有螺旋形第一螺纹槽的螺杆轴; 螺母,其具有与所述第一螺纹槽对应的内周面上形成有螺旋形的第二螺旋槽,以与所述螺杆轴螺纹接合并且在所述一侧具有一对循环孔; 多个滚动元件,其滚动地安装在形成在所述第一和第二螺纹槽之间的载荷区域中; 以及在其中形成有滚动体循环路径的树脂循环构件,其从所述一对循环孔中的一个循环孔中的一个循环孔中汲取沿着所述载荷区域滚动的滚动元件,以被引导到所述螺母的外部,并将所述滚动元件从 一对循环孔中的另一个到负载区域,并且其两端配合在一对循环孔中。 循环构件由树脂制成并使用金属保持构件固定在螺母上。
    • 6. 发明授权
    • Ball screw
    • 滚珠丝杠
    • US07201076B2
    • 2007-04-10
    • US11168416
    • 2005-06-29
    • Tsutomu Ohkubo
    • Tsutomu Ohkubo
    • F16H27/02
    • F16H25/2214F16H2025/2242Y10T74/19721Y10T74/19749
    • The ball screw comprises a shaft including a spiral-shaped shaft groove having a semicircular-shaped (Gothic-arch-shaped) section, a nut including a spiral-shaped nut ball groove which corresponds to the shaft groove and has a semicircular-shaped (Gothic-arch-shaped) section, a large number of balls rotatably fitted into between the nut ball groove and shaft groove in such a manner that they are held by and between these two grooves, and a circulation member capable of defining a ball circulation passage for allowing the balls to circulate endlessly therethrough, wherein a portion of the nut ball groove is formed larger in the effective diameter than the remaining portions of the nut.
    • 滚珠丝杠包括轴,其包括具有半圆形(哥特式拱形)截面的螺旋形轴槽,螺母包括对应于轴槽的螺旋形螺母球槽,并具有半圆形( 哥特式拱形)部分,大量的球以这样的方式可旋转地装配在螺母球槽和轴槽之间,使得它们被这两个槽之间保持,并且能够限定球循环通道 用于允许球循环地循环通过,其中,所述螺母球槽的一部分形成为比所述螺母的其余部分更大的有效直径。
    • 7. 发明授权
    • Ball screw
    • 滚珠丝杠
    • US06978693B2
    • 2005-12-27
    • US10233425
    • 2002-09-04
    • Tsutomu Ohkubo
    • Tsutomu Ohkubo
    • F16H25/22F16H1/18F16H1/20
    • F16H25/2214F16H2025/2242Y10T74/19721Y10T74/19744Y10T74/19749Y10T74/19772
    • The invention is a ball screw, comprising: a shaft having a spiral-shaped shaft; a nut having a spiral-shaped nut ball groove and screwed with the shaft via a plurality of balls; and a ball circulation passage for raking the plurality of balls at one end of the ball rolling, wherein an end part of the ball circulation passage is connected to one end part of the ball rolling passage in such a manner that: a gap Δt formed between a ball contacting part of the nut ball groove contacted with the ball and an inner circumferential surface of the end part of the ball circulation passage is set 0.2 mm or less; and a change of angle in a ball rolling direction is 10° or less, the change caused by raking the ball from the ball rolling passage to the ball circulation passage.
    • 本发明是一种滚珠丝杠,包括:具有螺旋形轴的轴; 螺母,具有螺旋状的螺母球槽,并通过多个滚珠与轴旋合; 以及滚珠循环通道,用于在滚珠的一端耙磨多个滚珠,其中滚珠循环通道的端部以这样的方式连接到滚珠滚动通道的一个端部,即: 与球接触的螺母球槽与球循环通道的端部的内周面的球接触部分设定为0.2mm以下; 球滚动方向的角度变化为10°以下,这是由于将球从滚珠滚动通道转移到滚珠循环通道而引起的变化。
    • 8. 发明授权
    • Ball screw
    • 滚珠丝杠
    • US06925900B2
    • 2005-08-09
    • US10211353
    • 2002-08-05
    • Tsutomu Ohkubo
    • Tsutomu Ohkubo
    • F16H25/22F16H25/24F16H1/18F16H1/20
    • F16H25/2214F16H2025/2242Y10T74/19721Y10T74/19749
    • The ball screw comprises a shaft including a spiral-shaped shaft groove having a semicircular-shaped (Gothic-arch-shaped) section, a nut including a spiral-shaped nut ball groove which corresponds to the shaft groove and has a semicircular-shaped (Gothic-arch-shaped) section, a large number of balls rotatably fitted into between the nut ball groove and shaft groove in such a manner that they are held by and between these two grooves, and a circulation member capable of defining a ball circulation passage for allowing the balls to circulate endlessly therethrough, wherein a portion of the nut ball groove is formed larger in the effective diameter than the remaining portions of the nut.
    • 滚珠丝杠包括轴,其包括具有半圆形(哥特式拱形)截面的螺旋形轴槽,螺母包括对应于轴槽的螺旋形螺母球槽,并具有半圆形( 哥特式拱形)部分,大量的球以这样的方式可旋转地装配在螺母球槽和轴槽之间,使得它们被这两个槽之间保持,并且能够限定球循环通道 用于允许球循环地循环通过,其中,所述螺母球槽的一部分形成为比所述螺母的其余部分更大的有效直径。
    • 9. 发明授权
    • Ball screw mechanism
    • 滚珠丝杠机构
    • US06742408B2
    • 2004-06-01
    • US10254672
    • 2002-09-26
    • Tsutomu OhkuboTakeshi Nakazawa
    • Tsutomu OhkuboTakeshi Nakazawa
    • F16H2524
    • F16C33/3706F16C33/3713F16H25/2214F16H25/2238Y10T74/19749Y10T74/19767Y10T74/19777
    • Between two mutually adjoining load balls 5, there is interposed a retaining piece 10 having two concave surfaces 11 which are respectively opposed to the two adjoining load balls 5. The retaining piece 10 has an outside diameter dimension equal to or more than 0.5 times the outside diameter dimension of the load ball 5. Further, the retaining piece 10 has an outside diameter dimension which, when the retaining piece 10 passes through a screw groove circulation passage and a tube circulation passage, prevents the retaining piece 10 from touching the inner walls of these screw groove circulation passage and tube circulation passage, or has an outside diameter dimension which is equal to or less than 0.9 times the outside diameter dimension of the load ball. Accordingly, it is possible to provide a ball screw mechanism which can prevent a retaining piece from interfering with the inner walls of circulation passages to circulate load balls stably to thereby prevent variations in torque as well as prevent the wear of the retaining piece to thereby enhance the durability thereof.
    • 在两个相邻的负载球5之间插入有具有两个凹形表面11的保持件10,该两个凹形表面11分别与两个相邻的负载球5相对。保持件10具有等于或大于外部的0.5倍的外径尺寸 此外,保持件10具有外径尺寸,当保持件10通过螺旋槽循环通道和管循环通道时,防止保持件10接触到内壁的内壁 这些螺旋槽循环通道和管循环通道,或具有等于或小于负载球的外径尺寸的0.9倍的外径尺寸。 因此,可以提供一种滚珠丝杠机构,其可以防止保持件与循环通道的内壁干涉,以稳定地使负载球循环,从而防止扭矩的变化,并且防止保持件的磨损从而增强 其耐久性。