CN113357330B - Ball screw pair transmission device and method capable of automatically pre-tightening - Google Patents

Ball screw pair transmission device and method capable of automatically pre-tightening Download PDF

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Publication number
CN113357330B
CN113357330B CN202110660125.7A CN202110660125A CN113357330B CN 113357330 B CN113357330 B CN 113357330B CN 202110660125 A CN202110660125 A CN 202110660125A CN 113357330 B CN113357330 B CN 113357330B
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China
Prior art keywords
rotor
nut
ball screw
stator
coil
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CN202110660125.7A
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Chinese (zh)
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CN113357330A (en
Inventor
于翰文
张云腾
姬帅
宋现春
姜洪奎
许向荣
张振中
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Shandong Jianzhu University
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Shandong Jianzhu University
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Priority to CN202110660125.7A priority Critical patent/CN113357330B/en
Publication of CN113357330A publication Critical patent/CN113357330A/en
Application granted granted Critical
Publication of CN113357330B publication Critical patent/CN113357330B/en
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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
    • 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
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
    • F16H25/2209—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with arrangements for taking up backlash
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The application relates to a ball screw pair transmission device and a method capable of automatically pre-tightening, the ball screw pair transmission device comprises a screw rod connected with a driving piece, a main nut and an auxiliary nut are connected with the screw rod in a threaded manner, the main nut and the auxiliary nut are fixedly connected with a workbench, the workbench is in sliding connection with a base, a positioning piece connected with the screw rod is arranged between the main nut and the auxiliary nut, the positioning piece is fixedly connected with the main nut, a stator is fixedly sleeved on the periphery of the positioning piece, a rotor is connected with the periphery of the stator in a threaded manner, a magnet is arranged in the rotor, a coil capable of being connected with a power supply is arranged in the stator, and an elastic piece is arranged between the rotor and the auxiliary nut.

Description

Ball screw pair transmission device and method capable of automatically pre-tightening
Technical Field
The application relates to the technical field of ball screw pairs, in particular to a ball screw pair transmission device and method capable of automatically pre-tightening.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In the research of modern feed drive systems, ball screws play an important role by virtue of their reliability and accuracy. It converts rotational motion into linear motion and is critical in many applications, such as the robotics industry, semiconductors, or other precision motion control facilities.
Compared with the traditional screw pair, the ball screw pair replaces sliding friction with rolling friction, and has the characteristics of small abrasion, high axial rigidity, low axial clearance, reversibility and the like. The low friction drive of the ball screw provides an acceptably smooth motion of relatively high stiffness as many balls simultaneously contact the grooves of the screw. One of the main characteristics of the ball screw is its ability to vary its stiffness by setting different pretensions.
At present, the method for adjusting the pretightening force of the ball screw is various, but most of the methods are based on manual adjustment, in the running process of the ball screw pair, the inventor discovers that the pretightening force of the main nut and the auxiliary nut changes along with the running of the ball screw pair, so that the transmission precision of the ball screw pair is affected, and at the moment, the main nut and the auxiliary nut of the ball screw pair cannot be manually adjusted by adopting a manual operation due to the fact that the main nut and the auxiliary nut are in a moving state, and the adjustment needs to be stopped for adjustment, so that the working progress is affected.
Disclosure of Invention
The application aims to overcome the defects of the prior art, and provides the ball screw pair transmission device capable of automatically pre-tightening, the pre-tightening operation of a main nut and an auxiliary nut is convenient and quick, the pre-tightening force can be adjusted in real time in the running process of the ball screw pair, and the transmission precision of the ball screw pair is ensured.
In order to achieve the above purpose, the application adopts the following technical scheme:
in a first aspect, an embodiment of the present application provides an automatic pre-tightening ball screw assembly transmission device, including a screw rod connected with a driving member, where the screw rod is connected with a main nut and an auxiliary nut, the main nut and the auxiliary nut are both fixedly connected with a workbench, the workbench is slidably connected with a base, a positioning member connected with the screw rod is arranged between the main nut and the auxiliary nut, the positioning member is fixed with the main nut, a stator is fixedly sleeved on the periphery of the positioning member, a rotor is connected with the periphery of the stator by threads, a magnet is arranged in the rotor, a coil capable of being connected with a power supply is arranged in the stator, and an elastic member is arranged between the rotor and the auxiliary nut.
Optionally, the elastic element is provided with a stress detection element for detecting the pretightening force applied to the rotor by the elastic element.
Optionally, the rotor is close to the one side terminal surface of elastic component and is fixed with first end cover, and the rotor passes through first end cover and elastic component contact, and the opposite side of rotor is equipped with the second end cover, and the second end cover is kept away from the one side terminal surface fixed connection of elastic component with the stator.
Optionally, the second end cover is provided with a through hole for passing a connecting wire between the coil and the power supply.
Optionally, the elastic component adopts the spring, the spring cover is in the lead screw periphery, its one end and vice nut fixed connection, the other end and first end cover contact.
Optionally, the stator includes fixed part, fixed part cover is in the setting element periphery and with setting element fixed connection, the periphery of fixed part evenly is provided with a plurality of coil winding portion along circumference, the winding has the coil on the coil winding portion, coil winding portion one end is fixed with the fixed part, the other end is equipped with threaded connection portion, threaded connection portion's lateral surface and rotor medial surface threaded connection.
Optionally, the medial surface of rotor evenly is provided with a plurality of magnet mounting grooves along circumference, install magnet in the magnet mounting groove.
Optionally, the depth of the magnet mounting groove is greater than the thickness of the magnet.
Optionally, the length of the stator along the axis direction of the screw is smaller than the length of the rotor along the axis direction of the screw.
In a second aspect, an embodiment of the present application provides a method for pre-tightening a ball screw assembly transmission device capable of automatically pre-tightening, in which a coil is supplied with current, a rotor receives a magnetic field force in a circumferential direction thereof under the action of the coil and a magnet, the rotor rotates while moving in an axial direction of a screw, an elastic member is pressed, and a main nut and an auxiliary nut generate a pre-tightening force under a reaction force of the elastic member.
The application has the beneficial effects that:
1. the ball screw pair transmission device is provided with the stator and the rotor, the rotor is in threaded connection with the stator, the elastic piece is arranged between the rotor and the auxiliary nut, the stator is fixed with the main nut through the positioning piece, the stator coil can enable the rotor to rotate and simultaneously move along the axis direction of the screw rod after being electrified, the elastic piece is extruded, the main nut and the auxiliary nut generate pretightening force, the whole pretightening process is automatically carried out without manual pretightening, the pretightening force of the main nut and the auxiliary nut can be adjusted through the on-off electricity of the coil in the running process of the ball screw pair, the shutdown adjustment is not needed, and the working progress is ensured.
2. According to the ball screw pair transmission device, the rotor is driven to rotate by utilizing magnetic field force, the rotor moves along the axial direction of the rotor by utilizing threads, and the movement of the rotor is smooth, so that the pretightening force generated by the main nut and the auxiliary nut in the axial direction is more uniform, and the precision is higher.
3. According to the ball screw pair transmission device, the stress detection element is arranged on the elastic piece, so that the generated pretightening force can be collected in real time, and the rotor and the stator are in threaded connection, so that the fine adjustment of the position moving along the axis direction of the screw can be realized, and the pretightening force can be conveniently and accurately controlled.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present application;
FIG. 2 is a schematic diagram showing the connection of the secondary nut and the workbench according to embodiment 1 of the present application;
FIG. 3 is a schematic view of a pretension applying mechanism according to embodiment 1 of the present application;
FIG. 4 is a schematic view of a positioning member according to embodiment 1 of the present application;
FIG. 5 is a schematic diagram of an explosion structure of a pretension applying mechanism according to embodiment 1 of the present application;
FIG. 6 is a schematic view of a stator according to embodiment 1 of the present application;
FIG. 7 is a schematic view of a rotor structure according to embodiment 1 of the present application;
the device comprises a base, a stepping motor, a screw, a bearing seat, a main nut, a secondary nut, a workbench, a nut seat, a fixing plate, a screw, a fixing nut, a locknut, a locating piece, a stator, a fixing part, a threaded connecting part, a rotor, a magnet mounting groove, a coil, a magnet, a first end cover, a second end cover, a first bolt, a second bolt, a disc spring, a connecting plate and a strain gauge.
Detailed Description
Example 1
The utility model provides a ball screw pair transmission that can automatic pretension, as shown in fig. 1, includes base 1, the base adopts U type structure, including the first base portion that the level set up and the second base portion of fixing at first base portion both ends perpendicularly. The base is used as a supporting component of each element of the whole transmission system, and can be arranged on a relevant supporting mechanism of the using equipment according to actual needs when in use.
The ball screw pair is installed on the first base part, the ball screw pair adopts the existing ball screw structure, and the ball screw pair comprises a driving piece, wherein the driving piece is used as power supply equipment of the ball screw pair, in one implementation mode, the driving piece adopts a stepping motor 2, an output shaft of the stepping motor is connected with a screw 3 through a coupler, and the stepping motor can drive the screw to rotate.
In order to ensure the rotation stability of the screw rod, the two ends of the screw rod are provided with optical axis sections, the optical axis sections are rotationally connected with bearing seats 4, and the bearing seats are fixed on the first base part.
The screw is connected with a main nut 5 and an auxiliary nut 6, balls are arranged between the main nut and the auxiliary nut and the screw, a ball screw pair is formed, and the screw can drive the main nut and the auxiliary nut to move along the axis direction of the screw by rotating.
The main nut and the auxiliary nut are fixedly connected with the workbench 7, and the workbench is in sliding connection with the base through a guide rail arranged at the top end of the second driving part, so that the movement of the main nut and the auxiliary nut along the axis direction of the screw rod is realized.
The workbench is used for being connected with the driven moving part and used as a bearing element of the driven moving part.
In this embodiment, the main nut and the auxiliary nut both adopt T-shaped structures.
In one embodiment, the main nut comprises a first nut part with a larger diameter and a second nut part with a smaller diameter, the periphery of the second nut part is sleeved with a nut seat 8, the nut seat is fixedly connected with the first nut part through a plurality of bolts, the nut seat is fixedly connected with the bottom end of the connecting block, and the top end of the connecting block is fixedly connected with the workbench through bolts.
The main nut is a pre-purchased element, so that the main nut is difficult to directly connect with the workbench, and the nut seat and the connecting block are arranged, so that the main nut and the workbench can be fixedly connected on the premise of not greatly modifying the main nut.
In other embodiments, the second nut portion may be directly and fixedly connected to the workbench through a connecting member, where the second nut is required to be specially manufactured.
As shown in fig. 2, the secondary nut includes a third nut portion with a larger diameter and a fourth nut portion with a smaller diameter, where the fourth nut portion is fixedly connected with the bottom of the fixing plate 9, specifically, the bottom of the fixing plate is provided with a through hole, and the fourth nut portion passes through the through hole and is fixed with the hole surface of the through hole.
The top of the fixed plate is penetrated with a screw rod 10, one end of the screw rod penetrates through the fixed plate, and the other end of the screw rod is fixedly connected with the workbench through threads.
The screw rod is characterized in that fixing nuts 11 are connected to the rod sections positioned on two sides of the fixing plate in a threaded mode, the two fixing nuts are pressed on the surfaces of two sides of the fixing plate, fixing of the fixing plate and the screw rod is achieved, locknuts 12 are connected to the screw rod in a threaded mode, the locknuts are pressed on the surface of the workbench, and the screw rod is prevented from loosening in threaded connection with the workbench.
The auxiliary nut is connected with the workbench in the mode, so that the size of the workbench can be reduced to the greatest extent, the weight of the workbench is reduced, and the maximum bearing capacity of the whole transmission system is improved.
In other embodiments, the secondary nut may be connected to the table in the same manner as the primary nut, but the table needs to extend directly above the secondary nut, increasing the volume of the table and reducing the maximum load capacity of the overall drive system.
As shown in fig. 3-7, a pre-tightening force applying mechanism is arranged between the main nut and the auxiliary nut, the pre-tightening force applying mechanism comprises a positioning piece 13 arranged between the main nut and the auxiliary nut, the positioning piece is connected with a screw rod, the connection mode of the positioning piece and the screw rod is the same as that of the main nut, the auxiliary nut and the screw rod, and the screw rod can also move along the axial direction of the screw rod when rotating.
The locating piece also adopts T type structure, including the great first location portion of diameter and the less second location portion of diameter, first location portion passes through bolt and nut seat fixed connection, and then has realized the fixed connection with the main nut for the locating piece can be with the synchronous motion of main nut.
The outer peripheral surface of the second positioning part is sleeved with a stator 14, the stator is fixed with the outer peripheral surface of the second positioning part and can be fixed in a welding mode, the outer peripheral surface of the stator is sleeved with a rotor 15, the inner side surface of the rotor is in threaded connection with the outer side surface of the stator, and the rotor can move along the axial direction of the rotor while rotating relative to the stator.
In this embodiment, the length of the rotor in the axial direction of the screw is greater than the length of the stator in the axial direction of the screw, so that the axial contact width between the rotor and the stator thread is unchanged in the process of rotating and axially moving the rotor.
The stator includes fixed part 14-1, fixed part cover is in the second location portion periphery and with second location portion welded fastening, the outer peripheral face of fixed part evenly is provided with a plurality of coil winding portions along circumference, in this embodiment, sets up twelve coil winding portions, and the quantity of coil winding portion can set up according to actual need, the winding has coil 16 on the coil winding portion, the coil can be connected with the power, and the power can be circular telegram to the coil, coil winding portion one end is fixed with the fixed part, and the other end is equipped with threaded connection portion 14-2, threaded connection portion's lateral surface is equipped with the helicitic texture, through helicitic texture and rotor medial surface threaded connection, threaded connection portion is greater than the size of coil winding portion along stator hoop along the dimension of stator, plays threaded connection's effect on the one hand, has played the limiting displacement to the coil on the one hand, prevents that the coil breaks away from the coil winding portion.
The medial surface of rotor is equipped with the helicitic texture to threaded connection portion threaded connection through helicitic texture and stator, the medial surface of rotor is equipped with a plurality of magnet mounting groove 15-1, the quantity of magnet mounting groove and the quantity phase-match of coil winding portion, in this embodiment, sets up twelve magnet mounting grooves, be equipped with magnet 17 through the bolt fastening in the magnet mounting groove, in order to prevent rotor and stator in the relative rotation in-process outer peripheral face of stator to the magnet piece emergence friction damage, the degree of depth of magnet mounting groove is greater than the thickness of magnet.
It can be understood that the magnet can be arranged in the stator, the coil is arranged in the rotor, but when the coil is arranged in the rotor, auxiliary power supply elements such as the conductive slip ring and the like are also required to be arranged between the power supply and the coil, so that the complexity is increased.
In this embodiment, after the coil is energized, the coil interacts with the magnet to generate magnetic force, and because the stator is fixed with the positioning piece, the rotor can not rotate, and under the action of the magnetic force, the rotor rotates around the axis of the rotor, and meanwhile, because the rotor is in threaded connection with the stator, the rotor can move along the axis direction of the screw rod while rotating.
An elastic piece is arranged between the rotor and the main nut, and the rotor can extrude the elastic piece along the axial direction of the screw rod, so that pretightening force is applied to the main nut and the auxiliary nut through the elastic piece.
Further, in order to facilitate the transmission of force between the rotor and the elastic member and the protection of elements such as coils, magnets and the like in the rotor of the stator, the rotor and the stator are respectively provided with a first end cover 18 and a second end cover 19 along the two sides of the axis direction of the screw rod, the first end cover is fixedly connected with the end face of the rotor, which is close to the elastic member, through a plurality of first bolts 20, and the second end cover is fixedly connected with the end face of the stator, which is far away from the elastic member, through a plurality of second bolts 21.
The rotor can be contacted with the elastic piece through the first end cover, so that the elastic piece is extruded.
Further, in order to facilitate connection of the coil and the power supply, a through hole for the coil and the power supply connecting wire to pass through is formed in the second end cover.
In this embodiment, the elastic member is a spring, the spring is sleeved on the periphery of the screw, preferably, the belleville spring 22, and compared with other types of springs, the belleville spring has a smaller size along the axis direction of the screw, and is convenient to install between the first end cover and the main nut.
One end of the belleville spring is fixed with the connecting plate 23, the connecting plate is fixedly connected with the auxiliary nut, and the other end of the belleville spring is in contact with the first end cover.
In order to facilitate accurate control of the pretightening force, the end face, close to the first end cover, of the belleville spring is provided with a stress detection element, in this embodiment, the stress detection element adopts a strain gauge 24, the strain gauge is connected with a control system, collected belleville spring strain data can be transmitted to the control system, and the control system obtains pretightening force applied by the belleville spring according to a set algorithm and the like according to the elasticity coefficient of the belleville spring.
Because the rotor and the stator are in threaded connection, the movement smoothness of the rotor and the stator along the axis direction of the screw is good, the pre-tightening force applied is uniform, and the position of the rotor on the axis direction of the screw can be finely adjusted, so that the precise control of the pre-tightening force is realized.
Example 2:
the embodiment discloses a method for pre-tightening a ball screw pair transmission device capable of automatically pre-tightening, which is described in embodiment 1:
the coil is connected with a power supply through a connecting wire, the coil is electrified, magnetic field force is generated between the coil and the magnet, the magnetic field force drives the rotor to rotate around the axis of the coil, the rotor moves along the axis direction of the screw rod when rotating, the rotor extrudes the belleville spring through the first end cover, the belleville spring exerts reactive force, the reactive force acts on the main nut and the auxiliary nut, pretightening force is exerted on the main nut and the auxiliary nut, and the purpose of eliminating transmission gaps of the main nut and the auxiliary nut is achieved.
The whole pretightening force adjusting process does not need manual operation, time and labor are saved, and the working efficiency is high.
In the whole transmission system working process, the magnitude of the pretightening force can be monitored in real time through the strain gauge, and then the pretightening force can be adjusted in real time through the electrifying of the coil, so that the pretightening force requirement can be met, the transmission precision of the transmission system can be ensured, the stop adjustment is not needed, and the working progress can be ensured.
While the foregoing description of the embodiments of the present application has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the application, but rather, it is intended to cover all modifications or variations within the scope of the application as defined by the claims of the present application.

Claims (9)

1. The ball screw pair transmission device capable of automatically pre-tightening comprises a screw rod connected with a driving piece, wherein the screw rod is in threaded connection with a main nut and an auxiliary nut, the main nut and the auxiliary nut are fixedly connected with a workbench, and the workbench is in sliding connection with a base;
the stator comprises a fixing part, the fixing part is sleeved on the periphery of the positioning part and fixedly connected with the positioning part, a plurality of coil winding parts are uniformly arranged on the periphery of the fixing part along the circumference, coils are wound on the coil winding parts, one end of each coil winding part is fixed with the fixing part, the other end of each coil winding part is provided with a threaded connection part, and the outer side face of each threaded connection part is in threaded connection with the inner side face of the rotor;
the size of the threaded connection part along the annular shape of the stator is larger than the size of the coil winding part along the annular direction of the stator, so that the threaded connection function is realized, the limiting function on the coil is realized, and the coil is prevented from being separated from the coil winding part;
after the stator coil is electrified, the rotor can rotate and simultaneously move along the axis direction of the screw rod, so that the elastic piece is extruded, and the main nut and the auxiliary nut generate pretightening force;
the rotor is driven to rotate by utilizing magnetic field force, the rotor moves along the axial direction of the rotor by utilizing threads, and the movement of the rotor is smooth, so that the pretightening force generated by the main nut and the auxiliary nut in the axial direction is more uniform, and the precision is higher.
2. The ball screw assembly transmission device capable of automatically pre-tightening according to claim 1, wherein the elastic member is provided with a stress detection element for detecting the pre-tightening force applied to the rotor by the elastic member.
3. The ball screw assembly transmission device capable of automatically pre-tightening according to claim 1, wherein a first end cover is fixed on the end face of one side of the rotor, which is close to the elastic piece, the rotor is in contact with the elastic piece through the first end cover, a second end cover is arranged on the other side of the rotor, and the second end cover is fixedly connected with the end face of one side, which is far away from the elastic piece, of the stator.
4. A ball screw assembly transmission capable of self-pretensioning according to claim 3, wherein the second end cap is provided with a through hole for passing a connection wire between the coil and the power source.
5. A ball screw assembly transmission capable of self-pretensioning according to claim 3, wherein the elastic member is a spring which is fitted around the screw shaft and has one end fixedly connected to the sub nut and the other end in contact with the first end cap.
6. The ball screw assembly transmission device capable of automatically pre-tightening according to claim 1, wherein a plurality of magnet mounting grooves are uniformly formed in the inner side surface of the rotor along the circumference, and magnets are mounted in the magnet mounting grooves.
7. The ball screw assembly transmission capable of self-pretensioning according to claim 6, wherein the depth of the magnet mounting groove is greater than the thickness of the magnet.
8. The ball screw assembly transmission capable of self-pretensioning according to claim 1, wherein the length of the stator in the screw axis direction is smaller than the length of the rotor in the screw axis direction.
9. A method of pretensioning a ball screw assembly transmission device according to any one of claims 1 to 8, wherein the coil is supplied with current, the rotor is subjected to magnetic field force in the circumferential direction thereof by the coil and the magnet, the rotor rotates while moving in the axial direction of the screw shaft, the elastic member is pressed, and the main nut and the sub nut generate pretension by the reaction force of the elastic member.
CN202110660125.7A 2021-06-15 2021-06-15 Ball screw pair transmission device and method capable of automatically pre-tightening Active CN113357330B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110660125.7A CN113357330B (en) 2021-06-15 2021-06-15 Ball screw pair transmission device and method capable of automatically pre-tightening

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110660125.7A CN113357330B (en) 2021-06-15 2021-06-15 Ball screw pair transmission device and method capable of automatically pre-tightening

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Publication Number Publication Date
CN113357330A CN113357330A (en) 2021-09-07
CN113357330B true CN113357330B (en) 2023-08-25

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103199649A (en) * 2013-02-18 2013-07-10 成都瑞迪机械实业有限公司 Mechanical and electrical integration linear driving device
CN104565252A (en) * 2015-01-30 2015-04-29 山东大学 Dual-nut ball screw assembly with controllable pre-tightening force
CN105090412A (en) * 2015-07-06 2015-11-25 广东技术师范学院 Automatic pre-tightening device for ball screws
WO2018130154A1 (en) * 2017-01-12 2018-07-19 杭州宇树科技有限公司 High power mass density linear driving device of simplified structure
CN210524549U (en) * 2019-07-17 2020-05-15 中铁五局集团有限公司城市轨道交通工程分公司 High-precision low-speed large-torque nut driving feeding device
CN210600075U (en) * 2019-04-28 2020-05-22 鲁东大学 Double-nut seat device for pre-tightening ball screw

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103199649A (en) * 2013-02-18 2013-07-10 成都瑞迪机械实业有限公司 Mechanical and electrical integration linear driving device
CN104565252A (en) * 2015-01-30 2015-04-29 山东大学 Dual-nut ball screw assembly with controllable pre-tightening force
CN105090412A (en) * 2015-07-06 2015-11-25 广东技术师范学院 Automatic pre-tightening device for ball screws
WO2018130154A1 (en) * 2017-01-12 2018-07-19 杭州宇树科技有限公司 High power mass density linear driving device of simplified structure
CN210600075U (en) * 2019-04-28 2020-05-22 鲁东大学 Double-nut seat device for pre-tightening ball screw
CN210524549U (en) * 2019-07-17 2020-05-15 中铁五局集团有限公司城市轨道交通工程分公司 High-precision low-speed large-torque nut driving feeding device

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