CN212455395U - Ball screw driving linear transmission mechanism - Google Patents
Ball screw driving linear transmission mechanism Download PDFInfo
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- CN212455395U CN212455395U CN202021180868.1U CN202021180868U CN212455395U CN 212455395 U CN212455395 U CN 212455395U CN 202021180868 U CN202021180868 U CN 202021180868U CN 212455395 U CN212455395 U CN 212455395U
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Abstract
The utility model discloses a ball screw driving linear transmission mechanism, which comprises an installation part, wherein the ball screw driven by a power source is arranged on the installation part, and a nut of the ball screw is provided with a load structure; the mounting part is provided with a linear guide part and a sealing part, the load structure comprises a sliding part sliding along the linear guide part, a load part penetrating through the sealing part and moving along the linear guide part and an adapter part arranged on the nut, one end of the adapter part is connected with the sliding part, and the other end of the adapter part is connected with the load part. The utility model discloses install the inside at frame-type structure with moving part integration such as ball, linear guide, slider, switching piece to seal the logical groove at frame-type structure top with the steel band, not only compact structure, the outward appearance is succinct, has still effectively prevented outside dust and has got into, guarantees the motion precision, and increase of service life can be applicable to the great occasion of dust, still is applicable to the higher occasion of equipment cleanliness factor requirement.
Description
Technical Field
The utility model relates to a linear transmission mechanism especially relates to a ball drives linear transmission mechanism.
Background
The linear transmission mechanism is one of motion units commonly used in mechanical structures or equipment, and the existing linear transmission mechanism comprises an air cylinder, a hydraulic cylinder, a linear motor, a ball screw transmission, a belt transmission and the like.
The cylinder needs the air supply at the during operation, produces the noise easily, and the cylinder can only realize the transmission of point-to-point single station simultaneously, and speed is invariable in the work, can't change the adjustment in real time, can't satisfy most work scenes.
The hydraulic cylinder is commonly used for large heavy equipment, needs a linear driving movement mechanism with larger output force, needs to be matched with a more complex oil supply and pipeline loop system, and has complex operation and high maintenance and replacement cost.
Linear electric motor requires highly to the environment, is particularly not suitable for the great occasion of dust, and requires highly to the assembly precision of structure, and the protection requires highly, maintains that to change the operation complicated and fussy.
The ball screw transmission has the advantages of high movement and positioning precision, flexible and changeable speed, freely-arranged stations, simple and convenient operation and maintenance, freely-matched power sources and gradually becomes a mainstream application mechanism in automatic and intelligent equipment. However, most of the rolling lead screw driving linear transmission mechanisms on the current market are freely designed and configured, are inconvenient to maintain and replace, have poor adaptability and can only be singly configured. Meanwhile, the linear rolling lead screw module on the market is mostly of an open or semi-closed structure, the structure is large in size, poor in bending moment bearing capacity and poor in sealing performance, and cannot be applied to severe environments such as dust and special application occasions such as clean environments.
Disclosure of Invention
An object of the utility model is to provide a compact structure's ball drives linear transmission mechanism can be connected with different transport structure dismantlement formula, adapts to different application scenario, and application scope is wide and transmission precision is high.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the ball screw driving linear transmission mechanism comprises an installation part, wherein a ball screw driven by a power source is arranged on the installation part, and a nut of the ball screw is provided with a load structure; the mounting part is provided with a linear guide part and a sealing part, the load structure comprises a sliding part sliding along the linear guide part, a load part penetrating through the sealing part and moving along the linear guide part and an adapter part arranged on the nut, one end of the adapter part is connected with the sliding part, and the other end of the adapter part is connected with the load part.
The mounting part is a frame type structural part, the ball screw, the linear guide part, the sliding part and the adapter part are all arranged in the frame type structural part, and a through groove for the load part to pass through is formed in the top of the frame type structural part along the length direction of the frame type structural part.
The linear guide part is a linear guide rail arranged in the frame-type structural part, and the sliding part is a sliding block sliding along the linear guide rail.
The power supply comprises a motor base arranged at one end part of the mounting part and a motor arranged on the motor base, and a motor shaft of the motor is connected with a screw rod of the ball screw.
The adapter is an adapter block which is provided with a mounting hole matched with the nut.
The sealing element is a steel belt arranged at the position of the through groove.
The load piece comprises a load plate and an installation block which are integrally formed, and the upper part of the installation block is provided with a through hole matched with the steel belt; the load plate is positioned outboard of the frame structure.
And the bottom wall and/or the side wall of the frame type structural member are/is provided with mounting holes or mounting grooves.
The utility model has the advantages of compact structure not only has the advantage of high strength, high accuracy and high load, still is convenient for install and maintain. The concrete advantages are embodied in the following points:
(1) the utility model discloses an installed part is holistic frame-type structure, and whole contour machining has enough big intensity rigidity, can guarantee that frame-type structure can bear great outside moment of flexure load.
(2) The utility model integrates and installs the ball screw, the linear guide rail, the slider, the transfer block and other moving components inside the frame structure, and seals the through groove on the top of the frame structure by the steel belt, which not only has compact structure and simple appearance, but also effectively prevents external dust from entering, ensures the moving precision, prolongs the service life and can be applied to the occasions with larger dust; meanwhile, the dirt in the frame type structural member can be prevented from falling to influence the working environment, and the method is suitable for occasions with high requirements on equipment cleanliness.
(3) The power source of the utility model is independently arranged at the outer side of the frame type structural member, which is convenient for installation, disassembly, maintenance and replacement; the power source can be a servo motor, a stepping motor or a motor, and can also be a combination of a speed reducer and the motor, and the installation of different power sources can be realized by adjusting the interfaces of the motor bracket at the end part of the installation frame. Meanwhile, the ball screw is matched with a servo motor or a stepping motor, so that the regulation of the motion speed of the load can be realized, the reciprocating motion of continuous change of high speed, medium speed and low speed is realized, and the device is suitable for the working condition with large acceleration of the motion of the load.
(4) The utility model discloses a servo motor or step motor drive ball realize along linear guide's linear motion, and ball not only can guarantee higher motion accuracy and positioning accuracy, can also bear great axial load, and linear guide's direction can further improve the linear motion accuracy simultaneously, bears radial load and moment of flexure, makes the utility model is suitable for an axial load is great and to the higher operating mode of linear motion accuracy, positioning accuracy.
(5) The bottom wall and the side wall of the frame type structural member are both provided with mounting grooves or mounting holes, so that the mounting requirements of the utility model on any mounting direction and fixed position can be met, and the mounting and fixing mode is flexible; the number of the fixing surfaces is large, so that the integral rigidity of the frame type structural part can be ensured; the mounting groove is designed and processed into a general groove (dovetail groove) consistent with the profile structure, the flexible mounting of the frame type structural part can be realized by utilizing the aluminum alloy profile standard part, and the mounting is simple and rapid.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged sectional view taken along line D-D in fig. 1.
Fig. 3 is a schematic structural diagram of the transfer block of the present invention.
Fig. 4 is a sectional view taken along line a-a of fig. 3.
Fig. 5 is a side view of fig. 3.
Fig. 6 is a schematic structural view of the load member of the present invention.
Fig. 7 is a top view of fig. 6.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the drawings, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are provided, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1-2, the ball screw driving linear transmission mechanism of the present invention comprises
The mounting part is specifically a frame type structural part 1.1 (capable of effectively ensuring rigidity and bearing large bending moment load) with a through groove formed in the top wall, the inner surface of the bottom wall of the mounting part is fixedly connected with a linear guide part (namely a linear guide rail 1.2) extending along the length direction of the mounting part through a bolt, one end part of the frame type structural part 1.1 is fixedly connected with a motor base 1.3 through a bolt, the other end of the frame type structural part is connected with a protective cover 1.4 through a bolt, the sealing part is arranged (namely a steel belt 1.5) at the through groove at the top of the frame type structural part 1.1, and two ends of the; the steel belt 1.5 basically seals the through groove of the frame type structural member 1.3, so that the sealing performance of the frame type structural member 1.1 is ensured, external dust is prevented from entering the frame type structural member, and meanwhile, internal dirt is prevented from polluting the working environment;
the ball screw comprises a screw rod 3.1 and a nut 3.2 which are positioned in a frame type structural member 1.1, two ends of the screw rod 3.1 are respectively and rotatably connected with the left side wall and the right side wall of the frame type structural member 1.1 through bearings, and bearing covers 3.3 for protecting the bearings are respectively arranged on the left side wall and the right side wall of the frame type structural member 1.1; the ball screw is arranged in the frame type structural part, so that the service life of the ball screw is prolonged;
the power source is a motor 2 fixed on a motor base 1.3, and a working shaft of the motor 2 is in transmission connection with a screw 3.1 (the working shaft is fixedly connected with the screw through a coupler); the motor can be a servo motor or a stepping motor, the running speed of the motor can be adjusted, the reciprocating motion of continuous change of high speed, medium speed and low speed can be realized, and the requirement of linear reciprocating motion with large acceleration is met; meanwhile, the motor 2 is independently arranged on the outer side of the frame type structural member 1.1 through the motor base 1.3, so that the installation, the disassembly, the maintenance and the replacement are convenient; and
the load structure comprises a sliding part (namely a sliding block 4) sliding along the linear guide rail 1.2, an adapter part penetrating through the screw rod 3.1 and a load part penetrating through the steel belt 1.5 and translating along the linear guide rail 1.2, wherein the upper part of the adapter part is connected with the load part, and the lower part of the adapter part is connected with the sliding block 4 (namely connected through a bolt).
As shown in fig. 3-5, the adaptor is an integrally formed adaptor block 5, the adaptor block 5 has a mounting hole 5.1 matched with the nut 3.2, and the adaptor block 5 is sleeved on the nut 3.2 and moves synchronously with the nut 3.2; the top wall of the switching block 5 is provided with a first through hole 5.2, the bottom wall of the switching block is provided with a second through hole 5.3, the sliding block 4 is provided with a fourth through hole vertically corresponding to the second through hole 5.3, and the sliding block 4 and the switching block 5 are fixed together by bolts screwed in the fourth through hole and the second through hole 5.3.
As shown in fig. 6-7, the load member includes a load plate 6 located outside the frame-type structural member 1.1 and an installation block 7 fixedly connected to the adapting block 5, a through hole 7.1 matched with the steel strip 1.5 is formed in the upper portion of the installation block 7, a third through hole 7.2 vertically corresponding to the first through hole 5.2 is formed in the bottom of the installation block 7, and the adapting block 5 and the installation block 7 are fixed together by bolts screwed into the first through hole 5.2 and the third through hole 7.2. The mounting block 7 and the transfer block 5 are connected through bolts, so that the mounting and dismounting are simple and convenient, and the replacement is convenient.
As shown in fig. 1, in order to facilitate the fixed installation of the frame-type structural member 1.1, a plurality of mounting holes 1.6 are formed at intervals on the bottom wall of the frame-type structural member 1.1, and the frame-type structural member 1.1 and a fixed base are fixedly connected together by bolts; naturally, mounting holes may be formed in the bottom wall and the side wall of the frame-type structural member 1.1, so as to meet the fixing requirement of the frame-type structural member 1.1 in any direction, reduce the mounting difficulty, and ensure the rigidity of the frame-type structural member 1.1. Of course, the mounting hole can also be replaced by a mounting groove (such as a dovetail groove) matched with the section bar, the mounting of the frame type structural member 1.1 can be realized through the aluminum alloy section bar standard component, and the mounting is simple and convenient. Meanwhile, a load plate in-place sensor or a sensor for measuring the length can be arranged in the mounting groove or the mounting hole of the frame type structural member 1.1, so that the load plate 6 can automatically move back and forth.
As shown in fig. 7, in order to connect the conveying structure or the pushing handle with the load plate 6, threaded holes 6.1 (which may also be dovetail grooves or other general grooves matching with the aluminum alloy profile, and which enable quick installation of the load plate 6 with the conveying structure or the pushing handle through the aluminum alloy profile standard) are formed at intervals on the upper surface of the load plate 6.
The utility model discloses an installation as follows: the transfer block 5 penetrates through the screw rod 3.1 to be fixedly connected with the nut 3.2, and the mounting block 7 penetrates through the steel belt 1.5; respectively installing the screws 3.1 on the left side wall and the right side wall of the frame type structural member 1.1 by using bearings, and respectively installing bearing covers 3.3, as shown in figure 1;
connecting a working shaft of a motor 2 with the end part of a screw rod 3.1 extending out of a frame type structural member 1.1 by using a coupler, clamping a motor base 1.3 at one end part of the frame type structural member 1.1, inserting one end part of a steel strip 1.5 into a gap between the motor base 1.3 and the frame type structural member 1.1, and fastening the motor base 1.3, the steel strip 1.5 and the frame type structural member 1.1 together by using bolts; installing a protective cover 1.4 at the other end of the frame-type structural member 1.1, inserting the other end of the steel strip 1.5 into a gap between the protective cover 1.4 and the frame-type structural member 1.1, and connecting the steel strip 1.5, the protective cover 1.4 and the frame-type structural member 1.1 together by using bolts, as shown in fig. 1 in detail;
the load piece and the slide block 4 are adjusted to vertically correspond to the switching block 5, then the mounting block 7 is connected with the top wall of the switching block 5 through four bolts, and the slide block 4 is fixed with the bottom wall of the switching block 5 through the four bolts to complete mounting, which is specifically shown in fig. 1.
The utility model discloses when the installation, with ball, linear guide 1.2, slider 4, moving part integration such as switching piece 5 is installed in frame-type structure 1.1's inside, and seal the logical groove at frame-type structure 1.1 top with steel band 1.5, compact structure, it is pleasing to the eye succinct to guarantee the appearance, can also prevent effectively that external dust from getting into, ensure the transmission precision, increase of service life, the while also can prevent that the filth in frame-type structure 1.1 from dropping and influencing operational environment, satisfy the higher operating mode demand of equipment cleanliness factor requirement simultaneously, and the more operating mode operation demand of dust.
The working process of the utility model is as follows: a motor 2 is started manually (or the motor 2 is started by a PLC), the motor 2 drives a screw 3.1 to rotate in a frame type structural component 1.1, a nut 3.2 transmits force to a switching block 5 to enable the switching block to move linearly, the switching block 5 synchronously drives a sliding block 4 to slide along a linear guide rail 1.2, and a load part synchronously translates along a steel belt 1.5; the motor 2 is manually adjusted (or controlled by a PLC) to rotate in the reverse direction, so that the transfer block 5, the load part and the slide block 4 translate in the reverse direction along the steel belt 1.5 and the linear guide rail 1.2.
Ball screw drive linear transmission mechanism, have following advantage:
(1) the frame type structural member 1.1 has enough strength and rigidity, can bear larger bending moment load, and can meet the working condition requirement of long-distance linear reciprocating transmission;
(2) the precise ball screw is selected as a precise driving and transmission element, so that the high motion precision and the positioning precision can be ensured, the large axial load can be borne, and meanwhile, the linear motion precision is further improved by the guide of the linear guide rail 1.2, so that the utility model is suitable for the working conditions of large axial load, high linear motion precision and high positioning precision;
(3) when the motor is selected as a servo motor or a stepping motor, the linear transmission speed of the load part can be changed by changing the rotating speed of the motor, and the linear transmission device is particularly suitable for working conditions with high speed and high acceleration;
(4) the utility model integrally installs each structural component in the frame type structural component 1.1, and seals the frame type structural component 1.1 by the steel belt 1.5, thereby ensuring the sealing performance, preventing external dust from entering 1.1 part in the frame type structural component, and meeting the working condition operation requirements of more dust, such as cement factories, grain processing factories, and the like; and the dirt in the frame type structural member 1.1 can be prevented from falling into the external environment, and the method is suitable for working conditions with higher requirement on cleanliness, such as medical treatment, military industry or electronic industry and the like.
In the description of the present invention, it should be noted that the terms "front", "back", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Claims (8)
1. A ball screw driving linear transmission mechanism comprises an installation piece, wherein a ball screw driven by a power source is arranged on the installation piece, and a nut of the ball screw is provided with a load structure; the method is characterized in that: the mounting part is provided with a linear guide part and a sealing part, the load structure comprises a sliding part sliding along the linear guide part, a load part penetrating through the sealing part and moving along the linear guide part and an adapter part arranged on the nut, one end of the adapter part is connected with the sliding part, and the other end of the adapter part is connected with the load part.
2. The ball screw driven linear transmission mechanism according to claim 1, characterized in that: the mounting part is a frame type structural part, the ball screw, the linear guide part, the sliding part and the adapter part are all arranged in the frame type structural part, and a through groove for the load part to pass through is formed in the top of the frame type structural part along the length direction of the frame type structural part.
3. The ball screw driven linear transmission mechanism according to claim 2, characterized in that: the linear guide part is a linear guide rail arranged in the frame-type structural part, and the sliding part is a sliding block sliding along the linear guide rail.
4. The ball screw driven linear transmission mechanism according to claim 1, characterized in that: the power supply comprises a motor base arranged at one end part of the mounting part and a motor arranged on the motor base, and a motor shaft of the motor is connected with a screw rod of the ball screw.
5. The ball screw driven linear transmission mechanism according to claim 1, characterized in that: the adapter is an adapter block which is provided with a mounting hole matched with the nut.
6. The ball screw driven linear transmission mechanism according to claim 2, characterized in that: the sealing element is a steel belt arranged at the position of the through groove.
7. The ball screw driven linear drive mechanism of claim 6, wherein: the load piece comprises a load plate and an installation block which are integrally formed, and the upper part of the installation block is provided with a through hole matched with the steel belt; the load plate is positioned outboard of the frame structure.
8. The ball screw driven linear transmission mechanism according to claim 2, characterized in that: and the bottom wall and/or the side wall of the frame type structural member are/is provided with mounting holes or mounting grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021180868.1U CN212455395U (en) | 2020-06-23 | 2020-06-23 | Ball screw driving linear transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021180868.1U CN212455395U (en) | 2020-06-23 | 2020-06-23 | Ball screw driving linear transmission mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN212455395U true CN212455395U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021180868.1U Active CN212455395U (en) | 2020-06-23 | 2020-06-23 | Ball screw driving linear transmission mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821655A (en) * | 2021-02-04 | 2021-05-18 | 成都福誉科技有限公司 | Small-size sharp module |
| WO2024207613A1 (en) * | 2023-04-04 | 2024-10-10 | 大连美德乐工业自动化股份有限公司 | Transport unit having protective cover structure and transport system |
-
2020
- 2020-06-23 CN CN202021180868.1U patent/CN212455395U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821655A (en) * | 2021-02-04 | 2021-05-18 | 成都福誉科技有限公司 | Small-size sharp module |
| WO2024207613A1 (en) * | 2023-04-04 | 2024-10-10 | 大连美德乐工业自动化股份有限公司 | Transport unit having protective cover structure and transport system |
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