公开(公告)号：US5263381A

公开(公告)日：1993-11-23

申请号：US850709

申请日：1992-03-13

申请人： Takeki Shirai

发明人： Takeki Shirai

IPC分类号： F16H25/22 ,  F16H25/24

CPC分类号： F16H25/2209 ,  Y10T74/18728 ,  Y10T74/19902

摘要： A ball screw comprising a threaded rod and a ball nut making a rectilinear motion around the rod as the rod is rotated. A first load ball groove and a second load groove which have an offset relation to each other are formed in the inner surface of the ball nut. A pre-load is imparted to ball bearings rolling in these two load grooves. The ball nut has a resilient portion between the first and second load ball grooves. The resilient portion can be displaced axially. Any excessive pre-load created by the error introduced either in the lead of the ball-rolling groove or in the lead of the first or second load ball groove is absorbed by the resilient portion. Consequently, the novel ball screw is superior in accuracy to the prior art ball screw, and is easier to fabricate.

摘要翻译： 一种滚珠丝杠，其包括螺杆和滚珠螺母，当所述杆旋转时，所述滚珠螺母在所述杆周围形成直线运动。 在滚珠螺母的内表面上形成有彼此具有偏移关系的第一负载球槽和第二负载槽。 在这两个负载槽中对滚珠轴承进行预加载。 滚珠螺母在第一和第二负载球槽之间具有弹性部分。 弹性部分可以轴向位移。 通过在滚珠槽的引线或第一或第二负载球槽的引线中引入的误差产生的任何过度的预加载被弹性部分吸收。 因此，新颖的滚珠丝杠的精度优于现有技术的滚珠丝杠，并且制造更容易。

公开(公告)号：US5117700A

公开(公告)日：1992-06-02

申请号：US660148

申请日：1991-02-25

申请人： Hans W. Trechsel

发明人： Hans W. Trechsel

IPC分类号： F16H25/20 ,  H02K7/06

CPC分类号： H02K7/06 ,  F16H25/20 ,  F16H2025/2075 ,  Y10T74/18584 ,  Y10T74/19721 ,  Y10T74/19902

摘要： An actuating device having increased stiffness through the use of an extendable sleeve that is capable of extending and retracting from the drive device. The drive device is capable of fitting within the extendable sleeve.

摘要翻译： 致动装置通过使用能够从驱动装置伸出和伸出的可延伸套筒而具有增加的刚度。 驱动装置能够装配在可伸缩套筒内。

公开(公告)号：US4893518A

公开(公告)日：1990-01-16

申请号：US178229

申请日：1988-04-06

申请人： Sakae Matsumoto ,  Mitsuo Ichikawa

发明人： Sakae Matsumoto ,  Mitsuo Ichikawa

IPC分类号： B62D1/16 ,  B62D1/18 ,  B62D1/181 ,  F16H55/24

CPC分类号： B62D1/181 ,  Y10T74/19623 ,  Y10T74/19902

摘要： An electric steering apparatus which effects position adjustment by electric drive has a screw shaft parallel to upper and lower columns. A nut member rotatably supported by a housing fixed to a bracket is fixed against movement in the axial direction of the screw shaft and threadably engaged with a screw portion provided at one end of the screw shaft. In a preferred embodiments, the other end of the screw shaft is pivotally connected to the upper column for pivotal movement relative to the bracket in the direction of tilt, the nut member is self-aligning in the housing, and the nut member is rotatively driven by an electric motor to move the screw shaft in the axial direction and thereby move the upper column, whereby position adjustment can be accomplished. The apparatus is provided with a back-lash preventing device in which the screw shaft is pressed against the nut member in a radial direction and the threadably engaged portions of the screw shaft and the nut member are urged against each other.

摘要翻译： 通过电驱动进行位置调整的电动转向装置具有与上下列平行的螺杆轴。 由固定在支架上的壳体可旋转地支撑的螺母构件被固定成在螺杆轴的轴向方向上的运动，并与设置在螺杆轴的一端的螺纹部螺纹接合。 在一个优选实施例中，螺杆轴的另一端枢转地连接到上柱，用于在倾斜方向上相对于支架枢转运动，螺母构件在壳体中自对准，并且螺母构件被旋转驱动 通过电动机沿轴向移动螺杆轴，从而移动上部柱，从而可以实现位置调整。 该装置设置有后挡板防止装置，其中螺杆轴沿径向压靠在螺母构件上，并且螺纹轴和螺母构件的螺纹接合部分彼此推压。

公开(公告)号：US4881419A

公开(公告)日：1989-11-21

申请号：US126837

申请日：1987-11-30

申请人： Paul P. Weyer

发明人： Paul P. Weyer

IPC分类号： F15B15/06 ,  B60G21/055 ,  E02F3/96 ,  F15B15/08 ,  F16H25/22 ,  F01B3/08

CPC分类号： F15B15/068 ,  B60G21/0553 ,  B66C23/44 ,  B66C23/54 ,  B66F11/044 ,  F16H25/2204 ,  F16H25/2266 ,  Y10T74/18728 ,  Y10T74/19795 ,  Y10T74/19902

摘要： A fluid-powered rotary actuated support for a platform, having a body with a vertical axial orientation during use. A drive member has a drive shaft extending coaxially within the body and a flange attached to an end portion of the shaft toward an upper body end. The shaft and flange are formed as an integral unit free of connection joints therebetween. The flange projects radially outward from the shaft beyond an inner body surface and is rotatable relative to the body through a horizontal plane. A first ball race is formed in the flange and a second ball race is formed in the body with balls disposed therebetween. Linear-to-rotary transmission means disposed within the body are operable for providing rotational movement between the drive member and body. The body utilizes a stationary seal to facilitate seal placement and reduce the overall length of the body. In one embodiment, the transmission means includes a plurality of rollers each having at least two roller disks adjustably axially movable relative to each other within a limited range for backlash elimination purposes. The rollers are rotatably disposed on spindles, each having a free end portion attached to an annular support plate and an opposite end portion rotatably disposed in a piston sleeve bore hole for rotational adjustment of the spindles to axially move the support plate and apply an axial force on the roller disks.

摘要翻译： 用于平台的流体动力旋转致动支撑件，其具有在使用期间具有垂直轴向取向的主体。 驱动构件具有在主体内同轴延伸的驱动轴和朝向上主体端附接到轴的端部的凸缘。 轴和凸缘形成为在其间没有连接接头的整体单元。 凸缘从轴向径向外伸出超过内体表面，并可通过水平面相对于主体旋转。 在凸缘中形成第一球座，在主体中形成第二球座，球之间设置有球。 设置在主体内的线性至旋转传动装置可操作用于在驱动构件和主体之间提供旋转运动。 身体利用固定的密封件，便于密封放置，减少身体的整体长度。 在一个实施例中，传动装置包括多个辊，每个辊具有至少两个辊盘，该辊盘可以在用于齿隙消除目的的有限范围内相对于彼此可调节地轴向移动。 辊可旋转地设置在主轴上，每个轴都具有附接到环形支撑板的自由端部分和可旋转地设置在活塞套筒孔中的相对端部，用于旋转调节主轴以轴向移动支撑板并施加轴向力 在滚筒盘上。

公开(公告)号：US4803914A

公开(公告)日：1989-02-14

申请号：US927057

申请日：1986-11-04

申请人： Sandor Vekony ,  Klara J. Vekonyne

发明人： Sandor Vekony ,  Klara J. Vekonyne

IPC分类号： F15B15/26 ,  F15B15/08 ,  F01B3/00

CPC分类号： F15B15/068 ,  Y10T74/19902

摘要： In a rotational working cylinder comprising a shaft arranged concentrically within the working cylinder and driven out of the working cylinder with at least one end of it, a piston being divided into two piston portions perpendicularly to the shaft and the piston portions being held in tensed position in respect to each other, forced trajectories between the working cylinder and the piston portions as well as between the piston portions and the shaft, respectively, at least one of the forced trajectories is formed as a longitudinal spiral path, and the piston portions are locked in relation to each other for maintaining the tensed position of the piston portions in all operational positions and loads of the working cylinder. Alternatively, a sealing plate is arranged between the two piston portions and the tensed position of the piston portions is established by the interconnection of the sealing plate, and the sealing plate has a middle opening and an outer periphery both being movable on the forced trajectories of the rotational working cylinder in a sealed manner, respectively.

摘要翻译： 在一个旋转工作缸中，该轴包括一个同轴地设置在工作缸内的轴，并在其至少一端被驱出工作缸，活塞被分成垂直于轴的两个活塞部分，活塞部分保持在张紧位置 相对于彼此，工作缸和活塞部分之间以及活塞部分和轴之间的强制轨迹分别被强制轨迹中的至少一个形成为纵向螺旋路径，并且活塞部分被锁定 相对于彼此保持活塞部分在工作气缸的所有操作位置和负载中的张紧位置。 或者，密封板设置在两个活塞部之间，并且通过密封板的互连来建立活塞部分的张紧位置，并且密封板具有中间开口和外周边，两者可以在强制轨迹 旋转工作缸分别以密封方式。

公开(公告)号：US4748866A

公开(公告)日：1988-06-07

申请号：US903733

申请日：1986-09-03

申请人： Paul P. Weyer

发明人： Paul P. Weyer

IPC分类号： F15B15/08 ,  F16H25/22 ,  F16H29/20 ,  F16H55/18

CPC分类号： F16H25/2266 ,  F15B15/068 ,  Y10T74/19795 ,  Y10T74/19902 ,  Y10T74/19953

摘要： A fluid-powered linear actuator having a body, and an output shaft with a piston portion disposed within the body. The shaft is axially movable in a first direction in response to fluid pressure on the shaft piston portion. A piston sleeve is mounted within the body and has a piston head to define with the shaft piston portion a fluid-tight chamber. A second fluid-tight chamber is provided on the opposite side of the piston head. Exterior sleeve splines transmit torque between the sleeve and the body in response to axial movement of the piston sleeve, and interior sleeve splines transmit axial force between the sleeve and the shaft in response to axial and rotational movement of the piston sleeve. In a preferred embodiment, the sleeve splines, and hence the corresponding splines on the body and shaft have the same hand with the lead of the interior splines being greater than the lead of the exterior splines so that the application of fluid pressure to the first chamber produces axial movement of the piston sleeve and the shaft in opposite directions, with the shaft moving in a first axial direction. The fluid pressure to the first chamber also applying pressure directly on the shaft piston portion to move the shaft in the first axial direction.

摘要翻译： 具有主体的流体动力线性致动器和具有设置在主体内的活塞部分的输出轴。 轴能够响应于轴活塞部分上的流体压力在第一方向上轴向移动。 活塞套筒安装在主体内，并具有活塞头，以使轴活塞部分形成流体密封的腔室。 第二流体密封室设置在活塞头的相对侧上。 外套筒花键响应于活塞套筒的轴向运动而在套筒和主体之间传递扭矩，并且内套筒花键响应于活塞套筒的轴向和旋转运动而在套筒和轴之间传递轴向力。 在优选实施例中，套管花键，因此主体和轴上的对应花键具有相同的手，内花键的导线大于外花键的导线，使得流体压力施加到第一室 在轴向沿第一轴向移动时，产生活塞套筒和轴的相反方向的轴向移动。 到第一室的流体压力也直接施加在轴活塞部分上的压力以使轴沿第一轴向方向移动。

公开(公告)号：US4693131A

公开(公告)日：1987-09-15

申请号：US743698

申请日：1985-06-11

申请人： Hiroshi Teramachi

发明人： Hiroshi Teramachi

IPC分类号： F16H25/20 ,  F16H25/22

CPC分类号： F16H25/2204 ,  F16H2025/204 ,  F16H2025/2075 ,  F16H25/2209 ,  Y10T74/18648 ,  Y10T74/19902

摘要： A feeding apparatus which employs a ball screw includes a movable table movably supported on a fixed bed. A ball screw shaft is supported at one of its ends by the fixed bed in such a manner that the ball screw shaft is movable in the direction of rotation thereof and immovable in the axial direction thereof. A ball nut is fitted on the ball screw shaft through steel balls and is supported by the movable table in such a manner that the ball nut is movable in the direction of rotation thereof and immovable in the axial direction thereof. A first drive source is mounted on the fixed bed to rotate the ball screw shaft, and a second drive source is mounted on the movable table and operatively connected to the ball nut through a hollow transmission shaft. The ball screw shaft has the other end thereof concentrically received in the hollow inside of the transmission shaft in such a manner that the ball screw shaft is rotatable and movable relative to the transmission shaft in the axial direction thereof.

摘要翻译： 采用滚珠丝杠的进给装置包括可移动地支撑在固定床上的活动台。 滚珠丝杠轴在其一端被固定床支撑，使得滚珠丝杠轴可沿其旋转方向移动并且在其轴向方向上不可移动。 滚珠螺母通过钢珠安装在滚珠丝杠轴上，并由可动台支撑，使得滚珠螺母沿其旋转方向可移动，并且在其轴向不可移动。 第一驱动源安装在固定床上以旋转滚珠丝杠轴，第二驱动源安装在可移动台上，并通过空心传动轴与滚珠螺母可操作地连接。 滚珠丝杠轴的另一端同轴地容纳在传动轴的中空内侧，使得滚珠丝杠轴能够相对于传动轴在其轴向方向上旋转并可移动。

公开(公告)号：USRE32433E

公开(公告)日：1987-06-09

申请号：US828602

申请日：1986-02-11

申请人： Kenneth W. Erikson ,  Keith W. Erikson

发明人： Kenneth W. Erikson ,  Keith W. Erikson

IPC分类号： F16B39/36 ,  F16H25/20

CPC分类号： F16B39/36 ,  F16H25/2009 ,  Y10T74/18728 ,  Y10T74/19902

摘要： An anti-backlash nut having one or more longitudinal flexural members with one end fixed and one end free-floating is disclosed which undergoes translational movement along a shaft. This anti-backlash nut is improved by providing ramps at the free-floating ends of the flexural members and means to apply axial forces on the ramps to thereby create radial force vectors which maintain the ramps in contact with the shaft even after the nut has become worn.

公开(公告)号：US4633732A

公开(公告)日：1987-01-06

申请号：US619269

申请日：1984-06-11

申请人： Masumi Nishikawa ,  Masanobu Ishikawa ,  Hiroki Sato ,  Shuhei Toyoda ,  Hakumi Ishii

发明人： Masumi Nishikawa ,  Masanobu Ishikawa ,  Hiroki Sato ,  Shuhei Toyoda ,  Hakumi Ishii

IPC分类号： B62D1/18 ,  B62D1/181 ,  F16H25/22

CPC分类号： B62D1/181 ,  F16C11/04 ,  Y10T74/18728 ,  Y10T74/19902

摘要： The shaft and bush device includes a shaft, a bush having a slit in its axial direction and a pressing member which forces the bush inwardly to contact with the shaft so that the bush and shaft are pressed to each other without any clearance. The shaft and the bush may be a screw shaft and a nut engaging the screw shaft or a pin and a nut engaging the pin.A tilting steering apparatus has this shaft and bush device. Namely the device is used as a pivot pin connecting an upper bracket rotatably holding an upper steering shaft and main bracket fixed to a body of an automobile. The device is also used for an expansion-shrinking device which swings the upper bracket against the main bracket. The expansion-shrinking device has a screw shaft and nut which form the shaft and bush device.

摘要翻译： 轴和衬套装置包括轴，具有沿其轴向的狭缝的衬套和迫使衬套向内与轴接触的按压构件，使得衬套和轴彼此压紧而没有任何间隙。 轴和衬套可以是螺钉轴和螺母，其接合螺杆轴或销钉和与销接合的螺母。 倾斜转向装置具有该轴和衬套装置。 即，该装置用作枢转销，该枢销将可转动地保持上转向轴的上支架和固定到汽车车身的主支架连接。 该装置还用于使上支架抵靠主支架摆动的膨胀收缩装置。 膨胀收缩装置具有形成轴和衬套装置的螺杆轴和螺母。

公开(公告)号：US4557156A

公开(公告)日：1985-12-10

申请号：US448171

申请日：1982-12-09

申请人： Hiroshi Teramachi

发明人： Hiroshi Teramachi

IPC分类号： B23Q5/40 ,  B65G33/02 ,  F16D28/00 ,  F16H25/20 ,  F16H25/22 ,  F16H55/17 ,  F16H1/18 ,  F16H1/20 ,  F16H55/22

CPC分类号： F16H25/2204 ,  B23Q5/40 ,  B23Q5/402 ,  F16H2025/2081 ,  F16H25/2214 ,  F16H25/2223 ,  Y10T74/18792 ,  Y10T74/19767 ,  Y10T74/19902

摘要： A ball nut is sleeved upon a worm via one or more, preferably two, groups of antifriction balls capable of rolling along internal and external screw threads on the ball nut and the worm. Two crosscuts are formed across the internal thread on the ball nut in axially spaced, diametrically opposite positions thereon, each for intercommunicating two neighboring turns of the helical groove therein. Each crosscut is concaved to provide a bypass for one group of balls around the thread on the worm. Thus each group of balls recirculate along one turn of the helical groove in the ball nut, making it possible for the worm to travel axially in response to the rotation of the ball nut. The converter further includes an antifriction bearing having an outer ring surrounding the ball nut via rolling elements confined therebetween, with the ball nut serving as the inner ring of the bearing. There are also disclosed herein feed mechanisms incorporating one and two such rotary-to-linear converters respectively. In either case the ball nut is gear-driven by an electric motor to cause relative endwise movement of the worm together with an object to be fed.

摘要翻译： 滚珠螺母通过一个或多个，优选两组，能够沿着滚珠螺母和蜗杆上的内螺纹和外螺纹滚动的减摩球套在蜗杆上。 在滚珠螺母上的内螺纹上形成有两个横切部，其上沿轴向间隔开的直径相对的位置，每个横向切口用于将两个相邻的螺旋槽的匝相互连通。 每个横切面都是凹形的，为蜗杆上的螺纹周围的一组球提供旁路。 因此，每组滚珠沿着滚珠螺母中的螺旋槽的一匝再循环，使得蜗杆可响应于滚珠螺母的旋转而轴向移动。 该转换器还包括一个减摩轴承，该滚动轴承具有通过限制在其间的滚动元件围绕滚珠螺母的外圈，滚珠螺母用作轴承的内圈。 还公开了分别包含一个和两个这样的旋转到线性转换器的进给机构。 在任一情况下，滚珠螺母由电动马达进行齿轮驱动，以使蜗杆与待进给的物体相对地逐渐移动。