WO2016188226A1 - 具有润滑储存功能的丝杆组件 - Google Patents

具有润滑储存功能的丝杆组件 Download PDF

Info

Publication number
WO2016188226A1
WO2016188226A1 PCT/CN2016/078260 CN2016078260W WO2016188226A1 WO 2016188226 A1 WO2016188226 A1 WO 2016188226A1 CN 2016078260 W CN2016078260 W CN 2016078260W WO 2016188226 A1 WO2016188226 A1 WO 2016188226A1
Authority
WO
WIPO (PCT)
Prior art keywords
nut
screw
lubricant
lead screw
groove
Prior art date
Application number
PCT/CN2016/078260
Other languages
English (en)
French (fr)
Inventor
林聪明
萨马哈阿卜达拉
Original Assignee
上海鸣志电器股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海鸣志电器股份有限公司 filed Critical 上海鸣志电器股份有限公司
Publication of WO2016188226A1 publication Critical patent/WO2016188226A1/zh

Links

Images

Classifications

    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0497—Screw mechanisms
    • 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
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0463—Grease lubrication; Drop-feed lubrication
    • F16H57/0464—Grease lubrication
    • 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
    • F16H57/00—General details of gearing
    • F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
    • 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
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/2075—Coaxial drive motors

Definitions

  • This invention relates to the field of screw lubrication, and in particular to a lubrication reservoir in a screw assembly.
  • the screw moves from a rotary motion by a motor or the like to a linear motion by a nut.
  • the motor, lead screw and nut form a screw assembly. Due to the large surface area of the screw, there is considerable friction between the screw and the nut.
  • the nut engages the screw and converts the rotational motion of the screw into a linear motion. The friction is overcome by a lubricant (usually oil). .
  • U.S. Patent No. 6,220,110 discloses a screw having oil lubrication using a ball recirculation block having an oil storage device, wherein a chamber in a ball recirculation block that cannot be effectively used for circulating balls is used for Store lubricant.
  • An oil bleed hole is provided to communicate the oil storage chamber and the rotating passage of the ball to lubricate the moving ball.
  • the oil-containing element is provided, the oil-containing element having a plurality of oil absorption and distribution branches for lubrication only through the steering passage Passing the ball.
  • the ball recirculation block is formed of two plastic members joined by ultrasonic bonding technology in order to achieve a reduction in manufacturing cost and ensure a perfect oil sealing effect of the ball recirculation block.
  • U.S. Patent No. 6,023,991 discloses a ball follower type screw which is shown with a screw shaft; a ball nut; a plurality of balls contained in the ball nut, the ball nut being threadedly engaged with the shaft so that it can Performing relative movement in a linear axial direction as guided by the rolling of the balls; and a polymer member comprising a lubricant mounted in the ball nut, the ball nut being in contact with the ball or in sliding contact with the threaded groove in the screw shaft .
  • the lubricant slowly oozes out of the polymer member and is supplied not only to the balls but also to the thread grooves, so that the lubricant maintains the desired lubrication effect in an automatically synchronized manner for an extended period of time.
  • U.S. Patent No. 6,752,245 discloses an annular lubricant supply device that is shown assembled into a recess of a nut member.
  • the lubricant supply device contains a lubricant and forms a notch on the outer peripheral surface.
  • a tubular member each having an outer diameter larger than the diameter of the recess is inserted into the recess to push and widen the recess in the circumferential direction.
  • One end of the tubular member is fitted into the groove of the retaining ring and the retaining ring is fixed to the nut member.
  • a prior art screw 11 is axially driven by a stepper motor 13.
  • the lead screw carries a load member 15 in which the precisely measured rotational motion of the lead screw 11 translates into a precise linear motion of the load member 15.
  • the three-piece nut 17 has a first member 21 and a second member 23 whose internal threads are driven by the lead screw 11. These two components are separated by an annular spacer 25 in a known anti-backlash configuration.
  • the annular spacer does not contact the screw but has a tubularly extending portion around the first member 21 and the second member 23.
  • the lubricant is applied directly to the screw and the nut tends to push the lubricant to the opposite end of the poorly lubricated screw.
  • the present invention achieves the above objects by a lead screw driven nut having an internal reservoir of a semi-solid lubricant, preferably a grease.
  • a semi-solid lubricant preferably a grease.
  • a lubricant will exhibit a slow flow as the screw rotates due to circulation of the lubricant in the reservoir, thereby continuously applying lubricant to the screw as the nut moves back and forth.
  • the viscosity of the grease becomes less, causing a slow flow or creep towards the lead to apply a very thin layer of grease to the lead.
  • the movement of the follower nut is sufficient to trigger a slow flow of grease filled in the chamber or reservoir created in the lead by slightly and slightly reducing the viscosity of the grease.
  • the reservoir is an internal annular groove in the nut that opens toward the lead screw, wherein the high viscosity grease is spaced apart from the lead screw by a small distance.
  • High viscosity lubricants such as greases, are semi-solids that not only flow due to gravity, but flow due to mechanically induced viscosity changes.
  • FIG. 1 is a perspective view of a prior art screw, driven nut and stepper motor assembly.
  • Figure 2 is a perspective view of the lead screw and nut of the present invention.
  • Figure 3 is a schematic view showing the assembly structure of the nut of Figure 2;
  • Figure 4 is a side cross-sectional view of a nut of another embodiment of the present invention.
  • Figure 5 is a side plan view of the nut of the present invention moving over the lead screw.
  • a threaded rod 11 having a helical thread around the shaft 12 supports a nut 27 whose internal thread is in driving relationship with the lead screw.
  • the nut has a groove indicated by dashed line 28, wherein the groove acts as a lubricant reservoir.
  • the nut having the first tubular member 31 and the second tubular member 33 is separated by an annular spacer 35 similar to the prior art backlash nut shown in FIG.
  • An optional spring washer 37 limits the proximity of the first tubular member 31 and the second tubular member 33 within the annular spacer 35 (as described below).
  • a first tubular member 31 having internal and external threads is shown on the right side.
  • the first portion of the internal thread 41 of the first tubular member 31 faces the annular spacer 73 and can reside entirely within the spacer.
  • the internal thread 41 is used as a joint screw although it is not visible.
  • the internal thread of the external thread 43 engaging the spacer is not shown such that the annular spacer 73 covers the first portion 51 of the first tubular member 31.
  • the central annular first wheel housing 45 divides the first tubular member into a first portion 51 and a second portion 53, respectively.
  • the first wheel housing 45 has a vertical shoulder 55 and a vertical shoulder 57 that extend perpendicular to the screw shaft. Because the spacer abuts the shoulder when the spacer is fully threaded to the external thread of the first tubular member, the shoulder 55 limits the travel of the annular spacer 73.
  • first tubular member 31 Of particular interest in the first tubular member 31 is a groove 59 that emerges as a passage through the first portion 51 of the tubular member 31.
  • the channel is seen to have a rectangular cross section through the first portion 51.
  • the channel is perpendicular to the axis of the screw.
  • the purpose of the passage is as a variable size grease reservoir depending on how much of the passage is closed by the second tubular member 62.
  • the second tubular member 62 has a first flange 63 and a second flange 65 of a selected one of the first portions 51 of the first tubular member 31.
  • the axial directions of the first flange 63 and the second flange 65 are sufficiently short that the passage defines a reservoir of the desired size.
  • the spacer 73 establishes a desired size for engagement of the first flange 63 and the second flange 65 with the passage,
  • the second annular wheel housing 77 of the second tubular member 62 is brought into abutment against the spacer 73.
  • the outer circumferences of the second annular wheel housing 77, the spacer 73, and the first wheel housing 45 may be approximately equal.
  • the annular spring spacer 75 placed on the first tubular member 31 enables the spacer 83 to be separated from the tubular member.
  • the spacer has a lubrication injection port, the spacer is aligned with the port on the lubrication reservoir. Spacers and gaskets also provide anti-backlash.
  • the lead screw can be inserted into the nut with the internal thread of the nut engaging the thread of the screw. It should be noted that the grease has not yet been inserted.
  • the injection port is used from the external position on the nut to the lubricant reservoir. Multiple ports can be used. For example, a small opening or injection port in the spacer faces the reservoir created by the channel.
  • a lubricant eg, grease
  • the grease is semi-solid at room temperature.
  • a pair of injection ports can be used, one port having a diameter relative to the second port.
  • the lead screw is inserted into the nut and the nut is filled with grease. If the lead screw is inserted into the nut before the grease is applied, two openings are required in the spacer so that the grease can be attached to the opposite side of the screw.
  • the lubricant preferably the grease
  • greases having a viscosity in the range of 150 cSt+ or 15 cSt- at temperatures up to 40 degrees worked well.
  • Molykote G4700 Low Corning products and trademarks
  • the grease remains in the reservoir without flowing until the nut moves along the lead screw. The movement of the nut causes a slow and slight circulation of the grease into the reservoir and to the screw, so that the lead screw is coated enough to avoid friction, but not very thick, pushing the grease between the screws. It is estimated that a continuous grease coating in the range of one thousandth of an inch is continuously applied to the screw.
  • the present invention tends to limit grease to the region of the nut in which the rotational motion of the screw is converted into linear motion on the load.
  • the nut 81 is the unthreaded first portion 83 of the sleeve and the second portion 85 of the centrally threaded thread that engages the threads of the lead screw.
  • This embodiment can be used in a motor such that the nut is fixed relative to the motor.
  • the motor stator surrounds the first portion 83.
  • In the central portion there is a non-threaded intermediate annular groove 87 which acts as a grease reservoir.
  • the grease reservoir extends radially outward beyond the threaded region.
  • This embodiment can be viewed as a plastic nut in a metal sleeve whose second portion of the center-engraved thread is part of the nut, wherein the annular groove 87 is constructed by the machine before the thread is applied to the central portion.
  • the sleeve is applied to the threaded nut.
  • the first portion of the sleeve 83 can be a motor shaft.
  • a nut 101 (which has an internal grease reservoir 103 of suitable viscosity grease of the type described above) is shown in phantom at a first position on the right side of the lead screw 11 to the left side of the lead screw 11
  • the second position 102 moves between.
  • the motion between these positions is indicated by arrow A.
  • the nut is applied to the lead screw by a thin layer of grease 105 (perhaps 0.001 inches thick, which is repeatedly brushed by the grease reservoir as it passes back and forth).
  • Three lubrication zones are shown.
  • the main lubrication zone in which the nut is active by continuously passing back and forth is the central zone 108.
  • Region 107 On either side of the central region, adjacent to the central region 108 is a region 107 in which grease pushed by the nut is not continuously applied by flow from the reservoir. Region 107 acts as a seal that blocks the flow of grease out to region 106. The outward region 106 is still further moved from the central region to receive minimal grease at the end of the lead screw, not through the passage of the nut. It should be noted that the load structure coupled to the nut can travel in the outward region 106, but the nut does not.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

一种具有润滑储存功能的丝杆组件及润滑丝杆的方法，所述组件包括丝杆（11）和步进电机（13）驱动的螺母（27），具有用于保持高粘度润滑剂的凹槽（59，87），高粘度润滑剂在环境温度下是半固体且与所述丝杆间隔开。润滑剂的流动能确保在所述螺母和所述丝杆上来回行进丝杆运动，由此引起润滑剂的缓慢流动，从而对所述丝杆涂敷一层薄润滑剂。所述螺母可以是消隙螺母或单个构件螺母，两者在所述丝杆周围都具有用于存储润滑剂的凹槽。

Description

具有润滑储存功能的丝杆组件
相关申请的交叉引用
本申请享受于2015年5月22日提交的美国临时申请号为62/165,702的优先权。
技术领域
本发明涉及丝杆润滑领域，且特别涉及丝杆组件中的润滑储存器。
背景技术
丝杆将从电机等进行的旋转运动转移至通过螺母进行的线性运动。电机、丝杆和螺母形成丝杆组件。由于丝杆表面积较大，所以在丝杆和螺母之间存在相当大的摩擦力，螺母接合丝杆并将丝杆的旋转运动转换为直线运动的摩擦力通过润滑剂(通常是油)来克服。
现有技术中，专利号为6,220,110的美国公开了具有使用具有油储存装置的滚珠再循环块进行油润滑的丝杆，其中不能有效地用于循环滚珠的滚珠再循环块中的腔室用于储存润滑油。设置油渗出孔以使油储存腔室和滚珠的转动通道连通，以便润滑移动的滚珠。为了防止由其自身重力保留在腔室中的特定区域中的静止处的润滑油不能润滑滚珠，提供了油包含元件，所述油包含元件具有多个油吸收和分配分支来润滑仅通过转向通道传递的滚珠。此外，滚珠再循环块由通过超声波结合技术结合的两块塑料构件形成，以便实现制造成本的降低并确保滚珠再循环块的完美油密封效果。
专利号为6,023,991的美国专利公开了滚珠从动器型的丝杆被示为具有螺杆轴；滚珠螺母；包含在滚珠螺母中的多个滚珠，所述滚珠螺母与轴以螺纹接合，使得其能够在如由滚珠的滚动引导的线性轴向方向上进行相对运动；和包含润滑剂的聚合物构件，其安装在滚珠螺母中，所述滚珠螺母与滚珠接触或与螺杆轴中的螺纹槽滑动接触。润滑剂慢慢渗出聚合物构件且不仅供应至滚珠而且也供应至螺纹槽，使得润滑剂在延长时期内以自动同步的方式保持所需润滑效果。
专利号为6,752,245的美国专利公开了环状润滑剂供应装置被示出为装配到螺母构件的凹槽中。润滑剂供应装置包含润滑剂并在外周表面形成凹口。每个都具有大于凹口的直径的外径的管状构件插入凹口中，从而在圆周方向上推动并加宽凹口。管状构件的一端被装配到保持环的凹槽中且保持环被固定至螺母构件。
在图1中，现有技术的丝杆11由步进电机13轴向驱动。丝杆承载负载构件15，其中丝杆11的精确测量的旋转运动转换为负载构件15的精确线性运动。三片式螺母17具有其内螺纹由丝杆11驱动的第一构件21和第二构件23。这两个构件在公知消隙构造中由环形间隔件25分离。环形间隔件不接触丝杆，但具有围绕第一构件21和第二构件23的管状延伸的部分。润滑剂被直接涂敷于丝杆且螺母趋于将润滑剂推动至润滑不好的螺杆的相对端部。
因此，现有技术的丝杠润滑存在的一个问题是过量润滑剂被强加涂向丝杠的相对遥远端部，最终堆积在端部。本发明的一个目的就是提供具有改进抗摩擦性质且同时防止过量润滑剂在末端积聚。
发明内容
本发明通过具有半固体润滑剂(优选油脂)的内储存器的丝杆从动螺母实现了上述目的。我们发现，由于在润滑剂在储存器中的循环，这样的润滑剂将在丝杆转动时表现出缓慢流动，从而在螺母来回移动时对丝杆连续地涂敷润滑剂。作为一个实例，在丝杆旋转时，油脂的粘性会变得稍少，从而朝向丝杠产生缓慢流动或蠕动以对丝杆涂敷一层非常薄的油脂。从动螺母的运动足以通过轻微和略微减少润滑脂粘性的方式触发在丝杆中产生的腔室或储存器内填充的油脂的缓慢流动。储存器是螺母内的内部环形凹槽、朝向丝杠打开，其中高粘度油脂与丝杠间隔开的距离小。高粘度润滑剂(诸如油脂)是半固体，其不仅是由于重力而流动，而是由于机械诱导的粘度变化而流动。
附图说明
图1是现有技术的丝杆、从动螺母和步进电机组件的透视图。
图2是本发明的丝杆和螺母的透视图。
图3是图2中的螺母的装配结构示意图。
图4是本发明的另一个实施案例的螺母的侧剖视图。
图5是在丝杆上移动的本发明的螺母的侧平面图。
具体实施方式
参考图2，在轴12周围具有螺旋螺纹的丝杆11支持其内螺纹与丝杆成驱动关系的螺母27。螺母具有由虚线28表示的凹槽，其中凹槽用作润滑剂储存器。具有第一管状构件31和第二管状构件33的螺母由类似于图1所示的现有技术的消隙螺母的环形间隔件35分离。可选弹簧垫圈37(不用于现有技术的消隙螺母)限制第一管状构件31和第二管状构件33在环形间隔件35内靠近(如下所述)。
参考图3，本发明的螺母被示出处于分解状态。在右侧示出具有内螺纹和外螺纹的第一管状构件31。第一管状构件31的内螺纹41的第一部分面对环形间隔件73且可完全驻留在间隔件内。内螺纹41虽然看不见但是被用作为接合丝杆。外螺纹43接合间隔件的内螺纹未显示出，使得环形间隔件73覆盖第一管状构件31的第一部分51。中心环形第一轮壳45将第一管状构件分别分为第一部分51和第二部分53。第一轮壳45具有垂直于螺杆轴延伸的竖直肩部55和竖直肩部57。因为在间隔件被完全拧到第一管状构件的外螺纹时，间隔件抵接肩部，所以肩部55限制环形间隔件73的行进。
在第一管状构件31中特别关注的是凹槽59，其作为通过管状构件31的第一部分51的通道而出现。看到通道具有通过第一部分51的矩形横截面。通道垂直于丝杆的轴。通道的目的是作为可变尺寸的润滑油脂储存器，这取决于由第二管状构件62封闭的通道的多少。
第二管状构件62具有第一管状构件31的第一部分51中的选定量通道的第一凸缘63和第二凸缘65。第一凸缘63和第二凸缘65的轴向足够短，使得通道限定所需尺寸的储存器。当丝杆不到位时，占用现象将无法杜绝，此时，第二管状构件在丝杠上的内螺纹会防止这种占用。用于油脂储存器的非零体积始终存在。
间隔件73建立所需尺寸以用于第一凸缘63和第二凸缘65与通道的啮合， 使得第二管状件62的第二环形轮壳77抵接间隔件73。第二环形轮壳77、间隔件73和第一轮壳45的外周可大约相等。置于第一管状构件31上的环状弹簧间隔件75使得间隔件83与管状构件能够实现分离。当间隔件具有润滑注入端口时，间隔件对准润滑储存器上的端口。间隔件和垫圈还提供消隙的作用。一旦螺母与所需通道尺寸组装，从而在螺母内建立凹形储存器，丝杆可插到螺母上，其中螺母的内螺纹接合丝杆的螺纹。应注意，油脂还尚未插入。从螺母上的外部位置到润滑剂储存器中都使用注入端口。可使用多个端口。例如，间隔件中的小开口或注入端口面对由通道建立的储存器。润滑剂(例如，油脂)通过注入端口插入以填充储存器，从而将油脂涂敷至期望程度来接触丝杠。油脂在室温下是半固体。可使用一对注入端口，一个端口直径相对第二端口。
丝杆插入螺母中且螺母装有油脂。如果在装油脂前丝杆插入螺母中，那么在间隔件中需要两个开口，使得油脂可装到丝杆的相对侧。
重要的是，润滑剂(优选油脂)具有适当粘度、在环境温度下是半固体。在一项实验中，在高达40度的温度下具有150cSt+或15cSt-的范围内的粘度的油脂运作良好。我们发现，优选Molykote G4700(Dow Corning的产品和商标)。在不流动直到螺母沿丝杠移动为止的情况下，油脂保留在储存器中。螺母的运动引起油脂的缓慢和轻微循环进入储存器中并到达丝杆，从而涂敷丝杠以足以避免摩擦，但不是很厚，使得在螺杆之间推动油脂。据估计，在一英寸的千分之一的范围内的连续油脂涂层被连续地涂覆于丝杆。
当润滑脂被涂覆于丝杆(没有上述类型的储存器，如现有技术中那样)时，油脂被推动到丝杆的端部，而使中心部分变得没有油脂而导致高摩擦。本发明趋于将油脂限于其中丝杆的旋转运动转换为负载上的线性运动的螺母区域内。
在图4的实施案例中，螺母81是套管的无螺纹的第一部分83和接合丝杆的螺纹的中心刻螺纹的第二部分85。本实施案例可用于电机内，使得螺母相对于电机是固定的。电机定子围绕第一部分83。在中心部分具有无螺纹中间环形凹槽87，其用作油脂储存器。油脂储存器径向向外延伸超过螺纹区域。本实施案例可被看作其中心刻螺纹的第二部分是螺母的一部分的金属套管内的塑料螺母，其中在螺纹应用于中心部分之前由机器构造环形槽87。套管应用于螺纹螺母上。第一部分套管83可以是电机轴。
在操作中，参考图5，螺母101(其具有上述类型的适当粘度油脂的内部油脂储存器103)在丝杆11的右侧上的第一位置至丝杆11的左侧以虚线示出的第二位置102之间移动。这些位置之间的运动由箭头A表示。当螺母在两个位置之间移动时，螺母将一层薄油脂105(也许是0.001英寸厚，即由油脂储存器将其在来回穿过时反复刷涂)涂敷至丝杆。示出三个润滑区域。其中通过连续来回穿过使螺母是活动的主要润滑区域是中心区域108。在中心区域的两侧，邻近中心区域108的是其中由螺母推动的油脂却没有被来自储存器的流动连续涂敷的区域107。区域107充当阻断油脂流出到区域106的密封。向外区域106仍然从中心区域进一步移动，从而在丝杆的端部接收最少油脂，不是通过螺母的穿过来润滑。应注意，耦接至螺母的负载结构可在向外区域106中行进，但螺母却不能。

Claims (20)

  1. 一种丝杆组件，其特征在于，包括：
    经电机旋转驱动的丝杆，该丝杆带有轴，所述轴的外侧带有螺旋螺纹；
    具有内螺纹的螺母，所述内螺纹与所述丝杆的螺旋螺纹匹配连接，所述螺母内设有凹槽作为润滑剂储存层，所述的凹槽在丝杠的轴向上横向延伸；
    润滑剂，其在环境温度下是半固体、设置在与所述丝杆螺旋螺纹之间存在间距的凹槽中，在所述丝杆旋转时，所述润滑剂具有流动性，丝杆在旋转时被涂敷上润滑剂。
  2. 根据权利要求1所述的丝杆组件，其特征在于，所述螺母包括
    第一管状构件，在其周围具有内螺纹和外螺纹，并且被设置在中心的环形的第一轮壳分为第一部分和第二部分，所述第一轮壳具有与螺杆轴向垂直的直立肩部，第一管状构件的第一部分设有作为通道的凹槽，所述通道具有在轴向方向上延伸的矩形横截面；
    第二管状构件，包括具有内螺纹的第二部分，和具有第一凸缘和第二凸缘的第一部分，所述第一凸缘和第二凸缘装配到所述第一管状构件的凹槽中，其大小可以调整从而与凹槽的体积相匹配；
    环形间隔件，其具有接合第一管状构件的第一部分周围的外螺纹的内螺纹、在丝杆插入螺母中时阻止第二管状构件朝向第一管状构件靠近，以控制所述丝杆上的凹槽的体积。
  3. 根据权利要求2所述的丝杆组件，其特征在于，所述的螺母上设置有外注入端口，该外注入端口垂直于丝杆轴开口并与所述凹槽对准以将润滑剂引入凹槽。
  4. 根据权利要求2所述的丝杆组件，其特征在于，所述第一管状构件的所述第一部分上设有环形弹簧垫圈，从而使所述环形间隔件与所述第一管状构件分离。
  5. 根据权利要求1所述的丝杆组件，其特征在于，还包括旋转驱动丝杆的步进电机。
  6. 根据权利要求1所述的丝杆组件，其特征在于，所述凹槽为螺母内的环 形空间。
  7. 根据权利要求1所述的丝杆组件，其特征在于，所述润滑剂是在40℃的温度下具有135cSt至165cSt范围内的粘度的油脂。
  8. 根据权利要求6所述的丝杆组件，其特征在于，作为螺母中一个组件的凹槽由一种材料制成，围绕凹槽的螺母的其它构件由另一种材料制成。
  9. 根据权利要求1所述的丝杆组件，其特征在于，所述螺母为消隙螺母。
  10. 根据权利要求9所述的丝杆组件，其特征在于，所述消隙螺母由其由环形间隔件分离的第一管状构件和第二管状构件形成，所述凹槽设置在上述管状构件中的任一个内。
  11. 一种丝杆组件，其特征在于，包括：
    由电机驱动的丝杆，所述丝杆在旋转的轴向周围具有螺旋螺纹；
    具有内螺纹的螺母，所述内螺纹与所述丝杆的螺旋螺纹相匹配，所述螺母螺纹具有形成环形凹槽的间隙，螺母的外部端口与环形凹槽想通，形成润滑储存器；
    润滑剂，其在环境温度下是半固体，设置在与所述丝杆螺旋螺纹之间存在间隔的凹槽中，在所述丝杆旋转时，所述润滑剂具有流动性，由此在丝杆旋转时被涂敷上润滑剂。
  12. 根据权利要求11所述的丝杆组件，其特征在于，所述螺母设置在套管内。
  13. 根据权利要求12所述的丝杆组件，其特征在于，所述套管为电机套筒。
  14. 根据权利要求11所述的丝杆组件，其特征在于，制成螺母的材料与套管的材料不同。
  15. 根据权利要求11所述的丝杆组件，其特征在于，所述凹槽中具有第一外注入端口和第二外注入端口。
  16. 一种润滑丝杆的方法，其特征在于，包括：
    在所述丝杆上设置螺母，在所述螺母内具有相对所述丝杆的环形槽，
    在丝杆旋转和润滑之前，所述环形凹槽中已放置半固体丝杆润滑剂；
    转动丝杆使螺母运动，从而使润滑剂流动至所述丝杆上。
  17. 根据权利要求16所述的方法，其特征在于，还可以将螺母安装在所述 丝杆上之后，向螺母中添加润滑剂。
  18. 根据权利要求16所述的方法，其特征在于，螺母内的润滑剂能够在丝杆转动时改变粘度。
  19. 根据权利要求16所述的方法，其特征在于，所述的螺母还可以套设在电机的套管内。
  20. 根据权利要求16所述的方法，其特征在于，所述的螺母还可以是内设置有环形槽的消隙螺母。
PCT/CN2016/078260 2015-05-22 2016-04-01 具有润滑储存功能的丝杆组件 WO2016188226A1 (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201562165702P 2015-05-22 2015-05-22
US62/165,702 2015-05-22
US14/858,935 2015-09-18
US14/858,935 US9964201B2 (en) 2015-05-22 2015-09-18 Lubrication reservoir for lead screw assembly

Publications (1)

Publication Number Publication Date
WO2016188226A1 true WO2016188226A1 (zh) 2016-12-01

Family

ID=57325976

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/078260 WO2016188226A1 (zh) 2015-05-22 2016-04-01 具有润滑储存功能的丝杆组件

Country Status (2)

Country Link
US (1) US9964201B2 (zh)
WO (1) WO2016188226A1 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7764005B2 (en) 2006-08-08 2010-07-27 Palo Alto Research Center Incorporated Traveling wave grids with agitated surface using piezoelectric effect and acoustic traveling waves
US10746269B2 (en) * 2014-10-31 2020-08-18 D-Box Technologies Inc. Linear actuator for motion simulator
US11268607B1 (en) 2016-02-17 2022-03-08 Helix Linear Technologies Lead screw nuts having threads formed from different materials
KR101944715B1 (ko) * 2016-12-29 2019-02-01 주식회사 만도 리드 스크류 조립체, 그리고 이를 이용한 후륜 조향 장치
USD1016599S1 (en) 2017-02-17 2024-03-05 Helix Linear Technologies Nut
CN110513455A (zh) * 2018-05-22 2019-11-29 上海鸣志电器股份有限公司 一种不可逆消间隙螺母
JP7226961B2 (ja) * 2018-10-19 2023-02-21 Thk株式会社 ボールねじ装置
JP2020133693A (ja) * 2019-02-14 2020-08-31 トヨタ自動車株式会社 動作変換機構、および、それを備えた電動ブレーキアクチュエータ
US11933386B2 (en) 2022-04-28 2024-03-19 Lin Engineering, Inc. Anti-backlash mechanism for electromechanical linear actuator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB457086A (en) * 1935-04-24 1936-11-20 Maag Zahnraeder & Maschinen Ag Improvements in screw nuts
GB949676A (en) * 1960-05-03 1964-02-19 Richards & Co Ltd George Improvements in or relating to screw and half-nut mechanisms particularly for machine tools
JP2002122204A (ja) * 2000-10-16 2002-04-26 Makino Milling Mach Co Ltd 機械の送り機構
JP2005308088A (ja) * 2004-04-21 2005-11-04 Nsk Ltd ボールねじ装置
JP2006009871A (ja) * 2004-06-23 2006-01-12 Nsk Ltd 遊星ローラねじ装置およびその製造方法
CN203703035U (zh) * 2014-01-26 2014-07-09 常州阿奇夏米尔机床有限公司 梯形丝杠油脂润滑结构

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2195799A (en) * 1939-03-10 1940-04-02 Kearney & Trecker Corp Backlash eliminator
US9133921B2 (en) * 2011-08-17 2015-09-15 Nsk Ltd. Ball screw and assembling method thereof
JP6252136B2 (ja) * 2013-11-28 2017-12-27 日本精工株式会社 ボールねじ
EP2894373B1 (de) * 2014-01-14 2017-07-19 Lakeview Innovation Ltd. Spielfreie Spindelmutter
US9784363B2 (en) * 2015-11-19 2017-10-10 Hiwin Technologies Corp. Lubricating device for ball screw device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB457086A (en) * 1935-04-24 1936-11-20 Maag Zahnraeder & Maschinen Ag Improvements in screw nuts
GB949676A (en) * 1960-05-03 1964-02-19 Richards & Co Ltd George Improvements in or relating to screw and half-nut mechanisms particularly for machine tools
JP2002122204A (ja) * 2000-10-16 2002-04-26 Makino Milling Mach Co Ltd 機械の送り機構
JP2005308088A (ja) * 2004-04-21 2005-11-04 Nsk Ltd ボールねじ装置
JP2006009871A (ja) * 2004-06-23 2006-01-12 Nsk Ltd 遊星ローラねじ装置およびその製造方法
CN203703035U (zh) * 2014-01-26 2014-07-09 常州阿奇夏米尔机床有限公司 梯形丝杠油脂润滑结构

Also Published As

Publication number Publication date
US9964201B2 (en) 2018-05-08
US20160341302A1 (en) 2016-11-24

Similar Documents

Publication Publication Date Title
WO2016188226A1 (zh) 具有润滑储存功能的丝杆组件
TWI644038B (zh) Actuator
CN103261742B (zh) 密封构件及使用该密封构件的直线运动引导装置
US4593572A (en) Lubricated drive mechanism
BR112015003816B1 (pt) Sistema de engrenagens de onda de tensão
CN206582300U (zh) 滚珠丝杠装置
DE112014005355T5 (de) Linearer elektromechanischer Aktuator
US9759311B2 (en) Ball screw device
CN106996442A (zh) 具有能够在其中由螺母输送流体的冷却通道的致动器
KR101909393B1 (ko) 윤활가능한 볼 스크류 장치
CN205715596U (zh) 一种新型的螺旋传动丝杠副的润滑装置
RU2547200C2 (ru) Задвижка дисковая
JP2017075699A (ja) トルク伝達可能なリニアブッシュ
JP6697924B2 (ja) ボールねじ
US20150213977A1 (en) Switch
US8668051B2 (en) Lubricating device for linear transmission mechanism
KR101585518B1 (ko) 로터리 액추에이터
CN105917138B (zh) 线性机电致动器
EP3392528B1 (en) Ballscrew lubrication
CN107208765B (zh) 用于线性致动器的螺母、致动器和制造方法
CN204082885U (zh) 传动结构
DE102014213505A1 (de) Spindellagerung mit Stützvorrichtung und querbeweglichem Drehlager
JP5657323B2 (ja) 直動案内ユニット
TWI708903B (zh) 具潤滑裝置之滾珠花鍵
WO2016078687A1 (en) Screw nut assembly

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16799115

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16799115

Country of ref document: EP

Kind code of ref document: A1