WO2019019755A1 - 全新超声波螺纹副 - Google Patents

全新超声波螺纹副 Download PDF

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Publication number
WO2019019755A1
WO2019019755A1 PCT/CN2018/085262 CN2018085262W WO2019019755A1 WO 2019019755 A1 WO2019019755 A1 WO 2019019755A1 CN 2018085262 W CN2018085262 W CN 2018085262W WO 2019019755 A1 WO2019019755 A1 WO 2019019755A1
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Prior art keywords
screw
nut body
thread pair
mandrel
ultrasonic
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PCT/CN2018/085262
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English (en)
French (fr)
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陈学锋
凃明霞
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顺德职业技术学院
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Publication of WO2019019755A1 publication Critical patent/WO2019019755A1/zh

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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
    • 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
    • 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
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • 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
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • F16H2025/249—Special materials or coatings for screws or nuts

Definitions

  • the invention belongs to the technical field of screw transmission, and in particular relates to a new ultrasonic thread pair.
  • the screw, nut and ball screw are the most widely used transmission components, especially in the high-end precision machine transmission. Many of them use the ball screw nut pair.
  • the ball screw nut vice drive has high precision and frictional resistance. Small, but its manufacturing process is complex, production costs are high, and the cost of use and maintenance is also high.
  • the object of the present invention is to overcome the deficiencies of the prior art and provide a new ultrasonic thread pair, which can generate high frequency vibration during operation, greatly reduce the friction between the contact surfaces of the thread pair, improve the transmission precision between the thread pairs and increase the service life of the thread pair. Improve durability and reduce manufacturing and usage costs.
  • the first technical solution of the present invention is achieved by a novel ultrasonic thread pair comprising a nut body, characterized in that the nut body is made of piezoelectric material or magnetostrictive material or other energy. Produced by a high-frequency vibrating material, the nut body can directly generate radial high-frequency vibration when it is working.
  • the outer casing is further included, and the outer casing is made of a high-strength material, and the outer casing is fixedly sleeved outside the nut body.
  • the outer cylindrical surface of the nut body is fixed with the inner hole of the outer casing.
  • an external thread is provided on the outer cylindrical surface of the nut body, and an internal thread is provided in the inner hole of the outer casing, and the internal thread of the outer casing is fixed with the external thread of the nut body.
  • a second technical solution of the present invention is achieved by a novel ultrasonic thread pair, comprising a screw, characterized in that the screw is made of a piezoelectric material or a magnetostrictive material or the like. Made of high-frequency vibrating material, the screw can directly generate radial high-frequency vibration when it is working.
  • a mandrel is further included, and the screw is provided with an inner hole, the mandrel is disposed in the inner hole of the screw and fixed, and the mandrel is made of a high-strength material.
  • the outer cylindrical surface of the mandrel is fixed with the inner hole of the screw.
  • an external thread is provided on the outer cylindrical surface of the mandrel, and an internal thread is provided on the inner hole of the screw, and the mandrel is located in the inner hole of the screw and is fixed by threads.
  • the invention has the advantages of simple structure, high-frequency vibration during work, greatly reducing the friction between the contact surfaces of the thread pair, improving the transmission precision between the thread pairs, increasing the service life of the thread pair, and improving the durability.
  • High transmission precision, simple manufacturing process, low production cost, reduced manufacturing and use cost, low maintenance and maintenance costs can be used for high-end precision equipment such as CNC machine tools, precision injection molding machines, replacing existing ball screw drive pairs, or For other equipment that requires high precision transmission.
  • Embodiment 1 is a schematic structural view of Embodiment 1;
  • Embodiment 2 is a schematic structural view of Embodiment 2;
  • Figure 3 is a schematic structural view of Embodiment 3
  • Figure 4 is a schematic structural view of Embodiment 4.
  • Figure 5 is a schematic structural view of Embodiment 5.
  • Fig. 6 is a schematic structural view of the sixth embodiment.
  • Fig. 1 it is a brand new ultrasonic thread pair, comprising a nut body 1, which is made of a piezoelectric material or a magnetostrictive material. When working, the nut body 1 can directly generate high frequency vibration.
  • FIG. 2 it is a brand new ultrasonic thread pair, comprising a nut body 1 and an outer casing 2, the outer casing 2 is made of a high-strength material, and the nut body 1 is made of a piezoelectric material or a magnetostrictive material.
  • the outer cylindrical surface of the nut body 1 is fixed to the inner hole of the outer casing 2. When working, the nut body 1 can directly generate high frequency vibration.
  • FIG. 3 it is a brand new ultrasonic thread pair, comprising a nut body 1 and an outer casing 2, the outer casing 2 is made of a high-strength material, and the nut body 1 is made of a piezoelectric material or a magnetostrictive material.
  • the outer cylindrical surface of the nut body 1 is provided with an external thread, and an internal thread is provided in the inner hole of the outer casing 2, and the internal thread of the outer casing 2 is fixed with the internal thread of the nut body 1.
  • the nut body 1 can directly generate high frequency vibration.
  • all the internal threads of the nut can generate the radially inward high-frequency vibration, which can greatly reduce the friction between the external threads of the screw. .
  • Fig. 4 it is a brand new ultrasonic thread pair, including a screw 3 made of a piezoelectric material or a magnetostrictive material. When working, the screw 3 can directly generate high frequency vibration.
  • FIG. 5 it is a brand new ultrasonic thread pair, including a screw 3 and a mandrel 4, and the screw 3 is provided with an inner hole, and the mandrel 4 is disposed in the inner hole of the screw 3, and the mandrel 4
  • the outer cylindrical surface is fixed to the inner hole of the screw 3, which is made of a piezoelectric material or a magnetostrictive material, and the mandrel 4 is made of a high-strength material.
  • the screw 3 can directly generate high frequency vibration.
  • FIG. 6 it is a brand new ultrasonic thread pair, including a screw 3 and a mandrel 4, and an inner hole is arranged in the axial direction of the screw 3, and the mandrel 4 is disposed in the inner hole of the screw 3, An external thread is arranged on the outer cylindrical surface of the mandrel 4, and an internal thread is arranged on the inner hole of the screw 3.
  • the mandrel 4 is located in the inner hole of the screw 3 and is fixed by screws.
  • the screw 3 is made of piezoelectric material. Made of a magnetostrictive material, the mandrel 4 is made of a high strength material. When working, the screw 3 can directly generate high frequency vibration.
  • all the external threads of the screw can generate a radially outward high-frequency vibration, which can greatly reduce the friction between the internal threads of the nut with which the nut is matched. .

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

Abstract

一种全新超声波螺纹副，螺母本体（1）或螺杆（3）由压电材料或磁致伸缩材料或其他能产生高频振动的材料制成，工作时螺母本体或螺杆可以直接产生径向高频振动。该螺纹副具有降低接触表面间摩擦、提高传递精度、增加使用寿命、减少使用成本等优点。

Description

全新超声波螺纹副 技术领域
本发明属于螺纹传动技术领域，尤其涉及一种全新超声波螺纹副。
背景技术
现有机电装备中，螺杆、螺母和滚珠丝杆是应用最广泛的传动部件，尤其是高档精密机器传动中，很多都会用到滚珠丝杆螺母副，滚珠丝杠螺母副传动精度高、摩擦阻力小，但其制造工艺复杂，生产成本高，使用和维护成本也高。
超声波振动表面所具有的悬浮支撑与减摩能力，已被证实，并获得多种实际应用，有研究发现超声波能使接触面间摩擦阻力降低90％以上，国内外已有诸多研究者开始使用超声波轴承和超声波电机，但至今未见有关超声波螺纹杆和螺母的研究公诸于世。
发明内容
本发明的目的是克服现有技术的不足而提供一种全新超声波螺纹副，工作时，能产生高频振动，大大降低螺纹副接触表面间摩擦，提高螺纹副间传递精度和增加螺纹副使用寿命，提高耐用度，减少制造和使用成本。
为达到上述目的，本发明的第一种技术方案是这样实现的，其是一种全新超声波螺纹副，包括螺母本体，其特征在于所述螺母本体由压电材料或磁致伸缩材料或其他能产生高频振动材料制成，当其工作时螺母本体可以直接产生径向高频振动。
在本技术方案中，还包括外壳体，所述外壳体是高强度材料制成，外壳体固定套设在螺母本体外。
在本技术方案中，所述螺母本体的外圆柱面与外壳体的内孔固结在一起。
在本技术方案中，在所述螺母本体的外圆柱面上设有外螺纹，在所述外壳体的内孔中设有内螺纹，外壳体的内螺纹与螺母本体的外螺纹固结在一起。
为达到上述目的，本发明的第二种技术方案是这样实现的，其是一种全新超声波螺纹副，包括螺杆，其特征在于所述螺杆由为压电材料或磁致伸缩材料或其他能产生高频振动材料制成，当其工作时螺杆可以直接产生径向高频振动。
在本技术方案中，还包括芯轴，在所述螺杆设有内孔，所述芯轴设在螺杆的内孔中并固定，芯轴由高强度材料制成。
在本技术方案中，所述芯轴的外圆柱面与螺杆的内孔固结在一起。
在本技术方案中，在所述芯轴的外圆柱面上设有外螺纹，在所述螺杆的内孔上设有 内螺纹，芯轴位于螺杆的内孔并通过螺纹固结在一起。
本发明与现有技术相比的优点为：结构简单，工作时，能产生高频振动，大大降低螺纹副接触表面间摩擦，提高螺纹副间传递精度和增加螺纹副使用寿命，提高耐用度，传动精度高，制造工艺简单、生产成本低，减少制造和使用成本使用和维护成本也低，能用于诸如数控机床、精密注塑机等高端精密装备，替代现有滚珠丝杠传动副，或者用于其他需高精度传动的设备。
附图说明
图1是实施例一的结构示意图；
图2是实施例二的结构示意图；
图3是实施例三的结构示意图；
图4是实施例四的结构示意图；
图5是实施例五的结构示意图；
图6是实施例六的结构示意图。
具体实施方式
下面结合附图对本发明的具体实施方式作进一步说明。在此需要说明的是，对于这些实施方式的说明用于帮助理解本发明，但并不构成对本发明的限定。此外，下面所描述的本发明各个实施方式中所涉及到的技术特征只要彼此之间未构成冲突就可以互相结合。
实施例一
如图1所示，其是一种全新超声波螺纹副，包括螺母本体1，所述螺母本体1由压电材料或磁致伸缩材料制成。工作时，螺母本体1可以直接产生高频振动。
实施例二
如图2所示，其是一种全新超声波螺纹副，包括螺母本体1及外壳体2，所述外壳体2是高强度材料制成，所述螺母本体1由压电材料或磁致伸缩材料制成，螺母本体1的外圆柱面与外壳体2的内孔固结在一起。工作时，螺母本体1可以直接产生高频振动。
实施例三
如图3所示，其是一种全新超声波螺纹副，包括螺母本体1及外壳体2，所述外壳体2是高强度材料制成，所述螺母本体1由压电材料或磁致伸缩材料制成，在螺母本体1的外圆柱面上设有外螺纹，在所述外壳体2的内孔中设有内螺纹，外壳体2的内螺纹与螺母本体1的内螺纹固结在一起。工作时，螺母本体1可以直接产生高频振动。
实施例一、实施例二和实施例三中，在工作时，全部螺母的内螺纹都能产生径向向 内的高频振动，能极大降低其与之配合的螺杆外螺纹间的摩擦力。
实施例四
如图4所示，其是一种全新超声波螺纹副，包括螺杆3，所述螺杆3由为压电材料或磁致伸缩材料制成。工作时，螺杆3可以直接产生高频振动。
实施例五
如图5所示，其是一种全新超声波螺纹副，包括螺杆3及芯轴4，在所述螺杆3设有内孔，所述芯轴4设在螺杆3的内孔中，芯轴4的外圆柱面与螺杆3的内孔固结在一起，所述螺杆3由为压电材料或磁致伸缩材料制成，芯轴4由高强度材料制成。工作时，螺杆3可以直接产生高频振动。
实施例六
如图6所示，其是一种全新超声波螺纹副，包括螺杆3及芯轴4，在所述螺杆3的轴向设有内孔，所述芯轴4设在螺杆3的内孔中，在芯轴4的外圆柱面上设有外螺纹，在螺杆3的内孔上设有内螺纹，芯轴4位于螺杆3的内孔并通过螺纹固结在一起，螺杆3由为压电材料或磁致伸缩材料制成，芯轴4由高强度材料制成。工作时，螺杆3可以直接产生高频振动。
实施例四、实施例五和实施例六中，在工作时，全部螺杆的外螺纹都能产生径向向外的高频振动，能极大降低其与之配合的螺母内螺纹间的摩擦力。
在本发明的所有实施中，由于压电材料、磁致伸缩材料以及与之相关的振动技术、换能技术和控制技术等相对成熟，且非本发明重点，故本发明中未对其进行详细说明。
以上结合附图对本发明的实施方式作出详细说明，但本发明不局限于所描述的实施方式。对于本领域的普通技术人员而言，在不脱离本发明的原理和宗旨的情况下对这些实施方式进行多种变化、修改、替换及变形仍落入在本发明的保护范围内。

Claims (8)

  1. 一种全新超声波螺纹副，包括螺母本体(1)，其特征在于所述螺母本体(1)由压电材料或磁致伸缩材料或其他能产生高频振动材料制成，当其工作时螺母本体(1)可以直接产生径向高频振动。
  2. 根据权利要求1所述全新超声波螺纹副，其特征在于还包括外壳体(2)，所述外壳体(2)是高强度材料制成，外壳体(2)固定套设在螺母本体(1)外。
  3. 根据权利要求2所述超声螺母，其特征在于所述螺母本体(1)的外圆柱面与外壳体(2)的内孔固结在一起。
  4. 根据权利要求2所述全新超声波螺纹副，其特征在于在所述螺母本体(1)的外圆柱面上设有外螺纹，在所述外壳体(2)的内孔中设有内螺纹，外壳体(2)的内螺纹与螺母本体(1)的外螺纹固结在一起。
  5. 一种全新超声波螺纹副，包括螺杆(3)，其特征在于所述螺杆(3)由压电材料或磁致伸缩材料或其他能产生高频振动材料制成，当其工作时螺杆(3)可以直接产生径向高频振动。
  6. 根据权利要求5所述全新超声波螺纹副，其特征在于还包括芯轴(4)，在所述螺杆(3)设有内孔，所述芯轴(4)设在螺杆(3)的内孔中并固定，芯轴(4)由高强度材料制成。
  7. 根据权利要求6所述全新超声波螺纹副，其特征在于所述芯轴(4)的外圆柱面与螺杆(3)的内孔固结在一起。
  8. 根据权利要求6所述全新超声波螺纹副，其特征在于在所述芯轴(4)的外圆柱面上设有外螺纹，在所述螺杆(3)的内孔上设有内螺纹，芯轴(4)位于超声螺杆(3)的内孔并通过螺纹固结在一起。
PCT/CN2018/085262 2017-07-25 2018-05-02 全新超声波螺纹副 WO2019019755A1 (zh)

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