KR20170109847A - Linear transmission device with lubrication unit - Google Patents

Linear transmission device with lubrication unit Download PDF

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Publication number
KR20170109847A
KR20170109847A KR1020160033962A KR20160033962A KR20170109847A KR 20170109847 A KR20170109847 A KR 20170109847A KR 1020160033962 A KR1020160033962 A KR 1020160033962A KR 20160033962 A KR20160033962 A KR 20160033962A KR 20170109847 A KR20170109847 A KR 20170109847A
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KR
South Korea
Prior art keywords
oil
mass block
moving body
oil reservoir
reservoir
Prior art date
Application number
KR1020160033962A
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Korean (ko)
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KR101789606B1 (en
Inventor
자오-위안 강
웨이-잉 주
춘-런 황
페이-링 충
Original Assignee
하이윈 테크놀로지스 코포레이션
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Priority to KR1020160033962A priority Critical patent/KR101789606B1/en
Publication of KR20170109847A publication Critical patent/KR20170109847A/en
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Publication of KR101789606B1 publication Critical patent/KR101789606B1/en

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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
    • 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
    • F16H25/2214—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with elements for guiding the circulating balls
    • 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
    • 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
    • F16H57/042—Guidance of lubricant

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

Abstract

The linear power transmission device of the present invention includes a long shaft, a movable body movably installed in a long axis, and a lubricating unit installed in the moving body, wherein the lubricating unit includes an oil tank and a mass block, The oil storage space communicates with the interior of the moving body through the oil outlet. The mass block is installed in the oil storage space of the oil tank and moves by the inertial force generated when the moving body moves. The lubrication oil can be pushed out of the storage space so that the lubricating oil is replenished from the oil outlet to the inside of the moving body, thereby achieving the lubrication effect.

Description

TECHNICAL FIELD [0001] The present invention relates to a linear power transmission device having a lubrication unit,

The present invention relates to a linear power transmission device, and more particularly to a linear power transmission device with a lubrication unit.

Linear power transmission devices (eg, ball screws or linear sliding rails) have a very good power transmission efficiency and are widely used in various apparatuses that require precise movement at present. However, if adequate lubrication is not achieved during long-term use of the linear power transmission device, the frictional force between the moving body and the longitudinal shaft gradually increases, thereby accelerating the wear of the linear power transmission device.

As a related related art, in Taiwan Patent Publication No. 201015000, a housing space is provided to store a lubricating oil, a piston is pulled by using a returning force of an elastic member, and the piston is moved to a position where the lubricating oil is supplied to the screw shaft and the nut And when it is determined that it is necessary to replenish the lubricating oil through the change of the position of the piston, the piston is pulled out by applying force to the piston so that the lubricating oil can be injected into the receiving space, and when the replenishment is completed, Can be resumed. However, the above patent is extremely inconvenient in use, because there is a problem of not only leakage of oil but also frequent replenishment of lubricating oil.

It is a principal object of the present invention to provide a linear power transmission device with a lubrication unit that can effectively solve the oil leakage problem and increase the ease of use by advancing the lubrication each time the moving object moves.

In order to achieve the above object, a linear power transmission device provided by the present invention includes a long shaft, a moving body, and a lubrication unit. Wherein the moving body is provided on the long axis so as to be movable along the axial direction of the long axis, the lubricating unit includes an oil tank and a first mass block, the oil tank is provided in the moving body and has an oil storage space, The oil storage space communicates with the interior of the moving body through an oil outlet, and the first mass block is movably installed in the oil storage space of the oil tank.

As can be seen from the above description, when the moving body starts to move, the first mass block moves to the oil outflow position by an inertial force generated when the moving body moves, The lubricating oil in the oil storage space is pushed out from the oil outlet to replenish the inside of the moving body by pushing out the lubricating oil in the storage space to achieve the lubrication effect.

More preferably, the lubricating unit may provide a second mass block, which is installed in the oil reservoir of the oil tank and is arranged along the first mass block Can move together. As a result, when the moving body is stopped, the second mass block blocks the oil outlet to prevent excessive lubrication, and when the moving body starts to move, the second mass block leaves the oil outlet, Is pushed out by the first mass block and released to the inside of the moving body.

1 is an external perspective view of a first embodiment of the present invention.
2 is a sectional view taken along the line 2-2 in Fig.
3 is a sectional view of the lubrication unit of the first embodiment of the present invention.
Fig. 4 is a partial cross-sectional view of the first embodiment of the present invention, which mainly shows that the first mass block and the second mass block are located at an initial position.
Fig. 5 is similar to Fig. 4 and mainly shows that the first mass block, the second mass block move in the direction of the oil outflow position at the initial position.
Fig. 6 is similar to Fig. 5, mainly showing that the first mass block and the second mass block are located at the oil outflow position.
7 is a partial cross-sectional view of a second embodiment of the present invention, mainly showing that the first mass block is located at an initial position.
Fig. 8 is similar to Fig. 7, mainly showing that the first mass block is located at the oil inflow position.
Fig. 9 is similar to Fig. 8, mainly showing that the first mass block is located in the oil outflow position.
10 is an external perspective view of a third embodiment of the present invention.
11 is a sectional view of a third embodiment of the present invention.
12 is a sectional view of the lubrication unit of the third embodiment of the present invention.
13 is a sectional view of the lubrication unit of the fourth embodiment of the present invention.
14 is an external perspective view of a fifth embodiment of the present invention.

The details of the structure, feature, assembly or use of the linear power transmission device provided by the present invention will be described in detail in the following embodiments. However, those of ordinary skill in the art will appreciate that the embodiments set forth for the purpose of illustrating and explaining the invention in greater detail are illustrative of the invention and are not intended to limit the scope of the claims. Know.

1 and 2, a linear power transmission apparatus 10 of a first embodiment of the present invention includes a long axis 20, a moving body 30, a plurality of balls 40, and a lubrication unit 50 . In this embodiment, since the linear power transmission device 10 is a ball screw, the long shaft 20 is a screw shaft in the present embodiment, and the moving body 30 is a nut.

On the outer circumferential surface of the long shaft 20, there is an externally threaded groove 22.

The moving body 30 is fitted in the long axis 20 and can reciprocate along the axial direction of the long axis 20. An oil tank mounting groove 32 is formed on the outer circumferential surface of the moving body 30 and a female screw groove 34 is formed on the inner circumferential surface of the moving body 30. The female screw groove 34 of the moving body 30 and the male screw groove 34 of the long axis 20 The female thread groove 34 corresponds to the male thread groove 22 of the long shaft 20 so that the load channel 12 is formed between the male thread 22 and the male thread 22.

The ball 40 is installed in the load channel 12 to be able to roll.

The lubrication unit 50 has an oil tank 51, a first mass block 52, and a second mass block 53 in the present embodiment. The oil tank 51 is provided in the oil tank mounting groove 32 of the moving body 30 and has a space 54. As shown in FIGS. 2 and 3, The first oil reservoir 542 and the second oil reservoir 544 are communicated with each other through the oil guide channel 55 and the second oil reservoir 544 and the second oil reservoir 544 are connected to each other. Is communicated with the interior of the moving body (30) through the oil outlet (56). For reference, the oil outlet 56 communicates with the load channel 12 (referred to as an effective thread zone), while the oil outlet 56 communicates with the ball 40 in the cloudless channel Referred to as an " Invalid Thread Zone "), but the present invention is not limited thereto. The first mass block 52 and the second mass block 53 are installed in the second oil reservoir 544 of the oil tank 51 in a communicative manner and are connected to the first mass block 52 and the oil guide channel 55, And the distance between the second mass block 53 and the oil outlet 56 is smaller than the distance between the second mass block 53 and the oil outlet 56. [ (55). Further, the mass of the second mass block 53 is smaller than the mass of the first mass block 52.

4, when the moving body 30 is stopped, the first mass block 52 and the second mass block 53 are located at the initial position P1, and at this time, The first mass block 52 of the second mass block 53 does not close the oil guide channel 55 so that the lubricating oil stored in the first oil reservoir 542 can be replenished into the second oil reservoir 544, The oil outlet 56 is closed so that the lubricating oil in the second oil reservoir 544 can not be injected into the inside of the moving body 30 to prevent excessive lubrication.

5, the first mass block 52 and the second mass block 53 are positioned and moved by the inertia force generated when the moving body 30 moves, And the mass of the first mass block 52 is larger than the mass of the second mass block 53 so that the moving distance of the first mass block 52 is larger than the moving distance of the second mass block 53, Can be increased. When the first mass block 52 and the second mass block 53 move to the oil outflow position P2 as shown in Fig. 6, the first mass block 52 is located in the first oil reservoir 542 The oil guide channel 55 is closed so that the lubricating oil can not be replenished into the second oil reservoir 544 so that excessive oil release does not occur and the second mass block 53 leaves the oil outlet 56, 2 oil reservoir 544 is pushed out by the first mass block 52 and injected from the oil outlet 56 into the inside of the moving body 30 so that the self lubrication effect can be achieved. Then, when the movable body 30 moves in the opposite direction, the first mass block 52 and the second mass block 53 are again subjected to an inertial force and return to the initial position P1 shown in Fig. 4 .

On the other hand, the lubrication unit 50 provides a first elastic member 57 and a second elastic member 58, and both ends of the first elastic member 57 are connected to a wall surface of the second oil reservoir 544, And both ends of the second elastic member 58 are connected to a wall surface of the other end of the second oil reservoir 544 and a second end of the second mass block 53 ) Of the first mass block 52 of the first mass block 52, respectively. The first mass block 52 and the second mass block 53 are displaced by the force of the first elastic member 57 and the second elastic member 58 by the force of the first elastic member 57 and the second elastic member 58, respectively, And maintains the initial position P1 as shown in Fig. When the first mass block 52 and the second mass block 53 move to the oil outflow position P2 as shown in Fig. 6, the first elastic member 57 is moved by the first mass block 52 And the second elastic member 58 is compressed by the second mass block 53 to accumulate the return force. When the movable body 30 stops moving, the first elastic member 58 is compressed by the first mass block 52, And the second mass block 53 return quickly and reliably to the initial position P1 as shown in Fig. 4 by the returning force of the first elastic member 57 and the second elastic member 58, respectively.

If the lubricating oil used in the lubrication unit 50 is difficult to flow due to its high viscosity, a single mass block can be used to achieve a self-lubricating effect. 7, the lubrication unit 50 omits the second mass block 53 and the second elastic member 58 in the structure so that the oil outlet 56 The lubricating oil is not automatically introduced into the inside of the moving body 30 in a state in which the lubricating oil is not subjected to the action of the pressure due to the high viscosity. Therefore, when the moving body 30 is stopped, Similarly, the first mass block 52 closes the oil guide channel 55 so that the lubricant in the first oil reservoir 542 is not replenished into the second oil reservoir 544, The first mass block 52 moves to the oil inflow position P3 by an inertia force to disengage the oil guide channel 55, and then, as shown in Fig. 8 Likewise, the lubricating oil formulated in the first oil reservoir 542 is transferred to the second oil reservoir 544, When the moving body 30 starts to decelerate, the first mass block 52 is again moved to the oil outflow position P2 under the action of an inertial force as shown in Fig. 9, The first mass block 52 at this time closes the oil guide channel 55 so as not to cause excessive oil emission and on the other hand the lubricant is supplied to the inside of the movable body 30 through the oil outlet 56 Lubricate by pushing. In the second embodiment of the present invention, the lubrication unit 50 is arranged so that the first mass block 52 keeps the initial position P1 shown in Fig. 7 securely when the moving body 30 is stopped, A first resilient member 57 may be provided to provide a return force to the first mass block 52. Of course, the first elastic member 57 may be omitted, if necessary.

Under the same principle, the lubrication unit 60 can be designed in different forms to meet different usage requirements. 10 to 12, in the third embodiment of the present invention, the oil tank 62 is C-shaped in appearance, is fitted to one end of the moving body 30 by being fitted to the long shaft 20 at the time of assembly, The oil tank 62 includes a first oil reservoir 64 and a second oil reservoir 66 in the same manner as in each of the embodiments described above and the first mass block 52 is connected to a second oil reservoir 66 And the first elastic member 57 is installed in the second oil reservoir 66 and is separated from the wall surface of the first oil reservoir 66 and the oil outlet 68 of the first mass block 52 Connected to one end. When the moving body 30 moves, the first mass block 52 pushes the lubricating oil by using an inertial force so that the lubricating oil is injected from the oil outlet 68 into the inside of the moving body 30, The first mass block 52 also receives the inertia force and the returning force of the first elastic member 57 and returns to the initial position P1.

Referring to FIG. 13, in the fourth embodiment of the present invention, the oil tank 70 is identical in appearance to the third embodiment, but in terms of structure, unlike the third embodiment, the oil tank 70 is divided into two oil reservoirs The first mass block 74 has a shape in which the shape of the oil storage space 72 of the oil tank 70 and the shape of the oil tank 70 in the shape of the oil tank 70 are different from each other, Should be the same. That is, the first mass block 74 is C-shaped. As a result, when the moving body 30 is moved, the first mass block 74 can also push the lubricating oil using an inertial force so that the lubricating oil is injected from the oil outlet 76 into the inside of the moving body 30 .

In other words, the linear power transmission device of the present invention allows one or two mass blocks in the oil tank to move using the force of inertia when the moving body 30 moves each time, and moves the lubricant to the moving body 30) to achieve a self-lubricating effect. As a result, compared with the prior art, it is possible not only to solve the oil leakage problem, but also to improve the usability in use effectively. Finally, referring to FIG. 14, the linear power transmission device of the present invention is not limited to a ball screw, and may be a linear sliding rail. In this case, the long axis 20 is a slide rail, the moving body 30 is a sliding slide, and the lubrication unit 50 is installed in the moving body 30, .

10: linear power transmission device 12: load channel
20: Long shaft 22: Male thread groove
30: Moving body 32: Oil tank mounting groove
34: Female threads 40: Ball
50: lubrication unit 51: oil tank
52: first mass block 53: second mass block
54: Oil storage space 542: First oil storage tank
544: Second oil reservoir 55: Oil guide channel
56: Oil outlet 57: First elastic member
58: second elastic member P1: initial position
P2: Oil outflow position P3: Oil inflow position
60: Lubrication unit 62: Oil tank
64: first oil reservoir 66: second oil reservoir
68: Oil outlet 70: Oil tank
72: Oil storage space 74: First mass block
76: Oil outlet

Claims (10)

Long axis;
A moving body installed on the long axis so as to be movable along an axial direction of the long axis; And
A lubrication unit comprising an oil tank and a first mass block
/ RTI >
Wherein the oil tank is provided in the moving body and has an oil storage space for lubricant storage, the oil storage space has an oil outlet, the oil storage space communicates with the inside of the moving object through the oil outlet, 1 mass block is movably installed in the oil storage space of the oil tank so that the lubricant in the oil storage space can be pushed out from the oil outlet to the inside of the moving body by the movement of the moving body,
A linear power transmission device comprising a lubrication unit. The method according to claim 1,
Wherein the oil storage space is divided into a first oil reservoir and a second oil reservoir, and the first oil reservoir and the second oil reservoir communicate with each other through an oil guide channel, and the second oil reservoir communicates with the oil reservoir through the oil outlet, And the first mass block is disposed in the second oil reservoir and the distance between the first mass block and the oil guide channel is smaller than the distance between the first mass block and the oil outlet, A linear power transmission device comprising a lubrication unit. 3. The method of claim 2,
When the first mass block is located at the initial position, the first mass block closes the oil guide channel, and when the first mass block is located at the oil inflow position, The first mass block is separated from the oil guide channel so that the lubricant in the oil guide channel can flow into the second oil reservoir through the oil guide channel, And pushing out the lubricating oil in the second oil reservoir so that the lubricating oil in the second oil reservoir can flow into the interior of the moving body through the oil outlet. The method of claim 3,
Wherein the lubricating unit further comprises a first elastic member, wherein the first elastic member is installed in the second oil reservoir, and both ends of the first elastic member are connected to a wall surface of the first oil reservoir, And each of the first mass block and the second mass block is connected to one end of the first mass block to maintain the first mass block in the initial position. The method according to claim 1,
Wherein the oil storage space is divided into a first oil reservoir and a second oil reservoir, and the first oil reservoir and the second oil reservoir communicate with each other through an oil guide channel, and the second oil reservoir communicates with the oil reservoir through the oil outlet, And a distance between the first mass block and the oil guide channel is smaller than a distance between the first mass block and the oil outlet, and the lubrication unit is movably installed in the second oil reservoir Wherein the distance between the second mass block and the oil outlet is less than the distance between the second mass block and the oil guide channel. 6. The method of claim 5,
When the first mass block and the second mass block are in their initial positions, the first mass block does not close the oil guide channel, the second mass block closes the oil outlet, Wherein the first mass block closes the oil guide channel and the second mass block leaves the oil outlet if the second mass block is located in the oil outflow position. The method according to claim 6,
Wherein the lubricating unit further comprises a first elastic member and a second elastic member, the first elastic member is installed in the second oil reservoir, and both ends of the first elastic member are connected to a wall surface of the one end of the second oil reservoir And the first mass block is connected to one end of the first mass block to maintain the first mass block in the initial position, and the second elastic member is installed in the second oil reservoir, 2 oil storage tank and one end of the second mass block to maintain the second mass block in the initial position. 6. The method of claim 5,
Wherein the mass of the second mass block is less than the mass of the first mass block. The method according to claim 1,
And the oil tank is provided on an outer peripheral surface of the moving body. The method according to claim 1,
Wherein the oil tank is fitted to the long axis and is provided at one end of the moving body.
KR1020160033962A 2016-03-22 2016-03-22 Linear transmission device with lubrication unit KR101789606B1 (en)

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KR1020160033962A KR101789606B1 (en) 2016-03-22 2016-03-22 Linear transmission device with lubrication unit

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KR101789606B1 KR101789606B1 (en) 2017-10-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116928310A (en) * 2023-08-24 2023-10-24 东莞市高技传动科技有限公司 Self-lubricating low-noise fine grinding module

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4346577B2 (en) * 2005-04-13 2009-10-21 上銀科技股▲分▼有限公司 Oil storage device
JP4436378B2 (en) * 2007-01-16 2010-03-24 上銀科技股▲分▼有限公司 Nut rotation type ball screw lubrication structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116928310A (en) * 2023-08-24 2023-10-24 东莞市高技传动科技有限公司 Self-lubricating low-noise fine grinding module
CN116928310B (en) * 2023-08-24 2024-05-14 东莞市高技传动科技有限公司 Self-lubricating low-noise fine grinding module

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