KR20110112652A - Gear - Google Patents

Gear Download PDF

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Publication number
KR20110112652A
KR20110112652A KR1020100031880A KR20100031880A KR20110112652A KR 20110112652 A KR20110112652 A KR 20110112652A KR 1020100031880 A KR1020100031880 A KR 1020100031880A KR 20100031880 A KR20100031880 A KR 20100031880A KR 20110112652 A KR20110112652 A KR 20110112652A
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KR
South Korea
Prior art keywords
gear
unit
teeth
bolt
tooth
Prior art date
Application number
KR1020100031880A
Other languages
Korean (ko)
Inventor
최부관
Original Assignee
삼성테크윈 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성테크윈 주식회사 filed Critical 삼성테크윈 주식회사
Priority to KR1020100031880A priority Critical patent/KR20110112652A/en
Publication of KR20110112652A publication Critical patent/KR20110112652A/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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels
    • F16H55/18—Special devices for taking up backlash
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/54—Arrangements or details not restricted to group B23Q5/02 or group B23Q5/22 respectively, e.g. control handles
    • B23Q5/56—Preventing 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
    • F16H57/00—General details of gearing
    • F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
    • F16H2057/125—Adjustment of backlash during mounting or assembly of gearing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)

Abstract

The present invention relates to a gear device that can reduce the backlash by engaging the two or more gears by adjusting the rotation angle to produce. The present invention includes a first unit gear formed with at least one screw tab, and having a certain number of gear teeth; A second through hole communicating with the screw tab and having the same number of gear teeth as the first unit gear and being in surface contact with the first unit gear such that the gear teeth are alternately arranged with the gear teeth of the first unit gear; Unit gears; And a fastening means penetrating the through hole and fastened to the screw tab to engage the first unit gear and the second unit gear.

Description

Gear device {Gear}

The present invention relates to a gear device, and more particularly, to a gear device that can reduce the backlash by transmitting the power of the rotary motion or linear motion.

In general, gear units are mechanical elements that transmit power in rotational and linear motions. Gear devices are used in various fields such as automobiles, various industrial devices, military equipment, and robots.

Gear units applied to industrial or military machinery or robots are used in combination with reduction gears such as motors and reducers to drive the control unit to the commanded position, or by decelerating or accelerating by suitably combining the number of gears. Use it by configuring it to be possible.

In particular, in a device that transmits the driving force of an industrial or military robot, a reduction gear is often used to operate precisely at a commanded position or angle, thereby enabling a large mass structure to be driven quickly and accurately.

On the other hand, when combining the gears constituting the gear device may have a fine gap between the gear teeth to be combined. In this case, as the motor repeats the forward rotation or reverse rotation and stop state, the position error may occur as much as the gap between the gear teeth due to the failure of transmitting the power of the motor accurately. This error is called backlash. The backlash not only prevents the object to be driven to the correct position but also causes a delay in driving time and noise during driving.

An object of the present invention is to provide a gear device capable of reducing backlash by engaging two or more gears by adjusting the rotation angle to produce them.

The present invention includes a first unit gear formed with at least one screw tab, and having a certain number of gear teeth; A second through hole communicating with the screw tab and having the same number of gear teeth as the first unit gear and being in surface contact with the first unit gear such that the gear teeth are alternately arranged with the gear teeth of the first unit gear; Unit gears; And a fastening means penetrating the through hole and fastened to the screw tab to engage the first unit gear and the second unit gear.

A second gear having a gear tooth engaged with the pair of gear teeth in contact with each other of the first unit gear and the second unit gear; It may be further provided.

The first gear may be one of a drive gear and a driven gear.

One gear tooth of the pair of gear teeth of the first unit gear and the second unit gear of the first gear that is in contact with each other is in contact with one of the neighboring gear teeth of the second gear, The other gear tooth of the first gear may be in contact with the other gear tooth of the neighboring gear teeth of the second gear.

The fastening means may be a bolt with a thread formed on the outer circumferential surface of at least part of the fastening means.

The fastening means includes an adjustment bolt for adjusting a relative position of the gear tooth of the first unit gear and the gear tooth of the second unit gear, and a fastening bolt for fixing the first unit gear and the second unit gear to each other. can do.

The adjustment bolt can be a countersunk head bolt with a countersunk head.

The number of each of the adjustment bolt and the fastening bolt may be a multiple of three.

The through hole of the second unit gear may be larger than the thread tab of the first unit gear.

The through hole of the second unit gear may be a long hole extending in the rotation direction of the gear.

A screw fixing device for preventing the fastening means fastened to the screw tab may be further provided.

The first gear may be a rack gear, and the second gear may be a pinion gear.

The first gear may be a pinion gear, and the second gear may be a rack gear.

According to the gear device according to the present invention, by backing the two or more gears by adjusting the rotation angle, it is possible to reduce the backlash.

1 is a perspective view schematically showing a gear device according to an embodiment of the present invention.
FIG. 2 is a view of the gear device of FIG. 1 viewed from one side. FIG.
3 is a perspective view of one side of a backlash preventing drive gear capable of preventing backlash in the gear device of FIG. 1.
4 is a perspective view of the driving gear for preventing backlash of FIG.
FIG. 5 is a view of the driving gear for preventing backlash of FIG.
FIG. 6 is a cross-sectional view taken along the line VI-VI in the anti-backlash driving gear of FIG. 3.
FIG. 7 is a view of the backlash driving gear of FIG. 3 seen from another surface. FIG.
FIG. 8 is a view schematically illustrating a state in which the fastening bolt and the adjusting bolt are fastened to the screw tab in the anti-backlash driving gear of FIG. 3.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows the external shape of a gear device 1 according to an embodiment of the invention. FIG. 2 shows a state in which the first gear 10 and the second gear 20 are engaged with each other in the gear device 1 of FIG. 1.

Referring to the drawings, the gear device 1 is a device for transmitting the power of a prime mover such as a drive motor to the load side. To this end, the gear device 1 may have a first gear 10 and a second gear 20.

In this case, the first gear 10 may be a driving gear assembled on the driving motor side, and the second gear 20 may be a driven gear assembled on the load side. However, the present invention is not limited thereto, and an embodiment in which the first gear 10 is a driven gear and the second gear 20 is a driving gear is also possible.

Typically, the size of the drive gear and the driven gear is determined according to the rotational speed, the driving force, and the like on the drive motor and the load side, which is determined to realize the performance of the mechanical device regardless of the backlash. At this time, when combining the driving gear and the driven gear constituting the gear device, there may be a minute gap between the teeth of the gears to be combined.

In this case, as the drive motor repeats the forward, reverse and stop states, positional errors may occur as much as the gap between the gear teeth due to the failure of the drive motor to accurately transmit power. This error is called backlash. The backlash may prevent driving the object to be driven to the correct position, may cause a delay in driving time, and may generate noise during driving.

To reduce backlash, anti-backlash gear arrangements can be used, such as precisely manufacturing the gears to minimize gaps in order to eliminate gaps between the combined gear teeth, or using dual gears with spring arrangement. Alternatively, the gear device may be manufactured by assembling an idle gear to which rotational force is applied in the usual opposite direction.

However, in the case of the precision manufacturing method, the cost of machining the gear increases, and in the case of utilizing additional parts such as springs and idle gears, as a large number of parts are added, the mechanical device becomes complicated and the manufacturing cost increases. It is more likely. In addition, when the spring is added, the elastic modulus of the spring may be lowered as it is repeatedly used for a long time, thereby reducing the anti-backlash function.

Accordingly, the gear device 1 according to the embodiment of the present invention improves the structure of the drive gear and / or the driven gear, thereby eliminating or preventing backlash that may occur between the teeth of the drive gear and the driven gear during power transmission. Can be reduced.

To this end, in the gear device 1, the drive gear and / or the driven gear may be formed to overlap two or more unit gears. In this case, the driving gear and / or the driven gear may be formed by adjusting the rotation angles of the unit gears overlapping each other so as to fasten each unit gear so that the gear teeth are alternately arranged.

On the other hand, the anti-backlash gear device can be applied to both the drive gear and the driven gear. However, in consideration of the ease of assembly, the ease and cost of the manufacturing process, it may be advantageous to apply to the smaller number of gears. Therefore, in the embodiment illustrated in the drawings, in the present description, a backlash preventing mechanism may be implemented in the first gear 10 corresponding to the driving gear.

In the gear device 10 for preventing the backlash according to an embodiment of the present invention, the first gear by assembling two unit gears of the same size and number of teeth produced separately during assembly of the gear device so that there is no gap between the gear teeth (10) can be manufactured. In this case, the first gear 10 may be manufactured by assembling the unit gears so that the gear teeth are alternated with each other by adjusting the rotation angles of the unit gears overlapping each other.

In this case, the first gear 10 may include a first unit gear 100, a second unit gear 200, and a fastening means 300.

The first unit gear 100 has a predetermined number of gear teeth, is integrally formed with the first gear shaft 11, and may rotate together with the first gear shaft 11. The second unit gear 200 has the same number of gear teeth as the first unit gear 100 and overlaps with the first unit gear 100 so as to be rotated together with the first gear shaft 11. The fastening means 300 may couple and couple the first unit gear 100 and the second unit gear 200.

In this case, the first unit gear 100 and the second unit gear 200 coupled to each other form the first gear 10, and the second gear 20 is the first unit gear 100 and the second unit gear. A pair of gear teeth in contact with each other of the 200 may be provided, that is, the second gear tooth 21, which is a gear tooth meshing with the first unit gear tooth 101 and the second unit gear tooth 201.

In this case, the first unit gear teeth 101 and the second unit gear teeth 201 may be arranged to be staggered with each other by varying their rotation angles. Thereby, it can be assembled without tooth clearance between the second gear teeth 21 of the second gear 20.

Therefore, even when the drive gear repeats the forward rotation, reverse rotation and stop operation, the backlash does not occur or its size can be minimized. In addition, it is possible to reduce the manufacturing cost of the gear device because it is not necessary to process the gear with a precision higher than the precision required by the mechanical device when machining the gear parts. In addition, since additional components such as springs and idle gears are not required, component costs and assembly costs can be reduced, and the possibility of failure can be reduced as the structure is simplified.

On the other hand, the gear device 1 that can reduce or eliminate the backlash according to an embodiment of the present invention can be applied to a power transmission structure that transmits a rotational force causing a rotational movement. Hereinafter, the description will be mainly focused on a structure for transmitting a rotational motion, such as a pinion gear.

However, the present invention is not limited thereto, and may be applied to a power transmission structure that transmits a rotational force to cause a linear motion or a power transmission structure that transmits a linear motion to cause a rotational motion. In this case, it is also applicable to rack and pinion structures in which the drive gear is a rack and the driven gear is a pinion, or the drive gear is a pinion and the driven gear is a rack. Can be.

3 and 4 are perspective views of the first gear 10 corresponding to the backlash preventing drive gear that can prevent the backlash in the gear device 1 of FIG. 1, respectively, viewed from different directions.

Referring to the drawings, the first unit gear 100 and the second unit gear 200 may be fastened to overlap each other by the fastening means 300 to form one first gear 10. To this end, at least one screw tab 100a is formed in the first unit gear 100, and a through hole (200a in FIG. 6) communicating with the screw tab 100a is formed in the second unit gear 200. Can be.

In this case, the fastening means 300 may be coupled to the screw tab 100a through the through hole 200a to couple the first unit gear 100 and the second unit gear 200 to each other. Accordingly, the second unit gear 200 may rotate together with the first unit gear 100 to transmit power to the second gear 20.

In this case, the first unit gear tooth 110, which is one gear tooth of the pair of gear teeth of the first unit gear 100 and the second unit gear 200 of the first gear 10 that are in contact with each other, is the second gear. The second unit gear tooth 210, which is in contact with one of the neighboring gear teeth of 20, and the other gear tooth of the first gear 10, is adjacent to the gear teeth of the second gear 20. One of the gears may be in contact with the other. In this case, each of the first unit gear tooth 110 and the second unit gear tooth 210 may be in close contact with the gear teeth of the second gear 20 in contact with each other.

On the other hand, the fastening means 300 may be a bolt formed with a screw thread is fastened to the screw tab 100a on at least a portion of the outer peripheral surface. 5 to 8 show the fastening means 300 is fastened to the screw tab 100a.

The fastening means 300 may include an adjusting bolt 310 and a fastening bolt 320. The adjusting bolt 310 may adjust the relative positions of the first unit gear tooth 101, which is the gear tooth of the first unit gear 100, and the second unit gear tooth 201, which is the gear tooth of the second unit gear 200. . The fastening bolt 320 fixes the first unit gear 100 and the second unit gear 200 to each other.

To this end, the thread tab 100a may have an adjustment tab 110 and a fastening tab 120. In this case, the adjustment bolt 310 is screwed with the adjustment tab 110, the fastening bolt 320 is screwed with the fastening tab 120.

On the other hand, the plurality of adjustment bolt 310 and the fastening bolt 320 may be provided. In this case, in order to distribute the tightening force by each of the adjusting bolt 310 and the fastening bolt 320 evenly, the adjusting bolt 310 and the fastening bolt 320 are respectively symmetric with respect to the central axis of the first gear shaft 11. Can be placed in the position.

In one embodiment, the adjustment bolt 310 and the fastening bolt 320 may be provided in multiples of three, for example three or six. In the embodiment shown in the figure, three adjustment bolts 310 may be arranged at substantially 120 degree intervals relative to the central axis of the first gear shaft 11. In addition, the fastening bolt 320 may be arranged to be spaced apart from the adjustment bolt 310 by a predetermined interval.

On the other hand, the adjustment bolt 310 is made so that the first unit gear teeth 101 and the second unit gear teeth 201 are in a position that can be in close contact with each other between the adjacent second gear teeth (21 in Fig. 2). The relative rotation position of the first unit gear 100 and the second unit gear 200 can be adjusted.

To this end, the adjustment bolt 310 can be a countersunk head bolt with a countersunk head. In this case, as shown in FIG. 8, the plate-shaped head portion of the adjustment bolt 310 has a diagonal contact surface with the second unit gear 200.

Therefore, when the adjustment bolt 310 is fastened to the adjustment tab 110 through the through hole 200a, the fastening force F of the adjustment bolt 310 is the through hole of the second unit gear 200 of the dish head. The load is applied in a direction perpendicular to the inside and the contact surface 200a.

In this case, the fastening force F may be decomposed into a first fastening force Fx of the horizontal component and a second fastening force Fy of the vertical component. Therefore, when the adjusting bolt 310 is engaged with the adjusting tab 110, the contact surface of the dish-shaped head of the adjusting bolt 310 pushes the second unit gear 200 in the horizontal direction.

Accordingly, the second unit gear 200 is rotated or moved about the first gear shaft 11. In this case, the movement of the second unit gear teeth 201 is limited by the adjacent second gear teeth 21 of the second gear 20 which meshes with the first gear 10. Therefore, the second unit gear teeth 201 are brought into close contact with one of the second gear teeth 21 adjacent thereto.

In this case, when the adjusting bolt 310 is tightened in a state in which the first unit gear tooth 101 is in close contact with one of the adjacent second gear teeth 21, the first unit gear tooth 101 and the second unit gear Teeth 201 are brought into close contact with each other between adjacent second gear teeth 21. Accordingly, the backlash between the first gear 10 and the second gear 20 can be reduced or eliminated.

At this time, when adjusting the amount of rotation or movement of the second unit gear 200 by the adjustment bolt 310, the second unit gear 200 may be moved or rotated by the adjustment bolt 310 having a dish-shaped head. As such, the through hole 200a of the second unit gear 200 into which the adjustment bolt 310 is inserted may be larger than the thread tap 100a of the first unit gear 100.

In another embodiment, the through hole 200a of the second unit gear 200 may be formed in a long hole shape in which the through hole 200a of the second unit gear 200 extends in the rotation or movement direction of the gear.

At this time, the through-hole 200a formed in the second unit gear 200 so that the adjustment bolt 310 can be inserted is finer than the position of the screw tab 100a formed in the first unit gear 100. It may be machined at a position rotated in a direction or counterclockwise, or may be made slightly larger or longer. In this case, when assembling the first unit gear 100 and the second unit gear 20, one of the two gears may be assembled even in a state in which the fine gears are rotated.

 In addition, through-holes 200a for the hole bolt body for the dish-shaped head of the adjusting bolt 310 may be formed in the second unit gear 200 so that the two gears may be finely twisted with each other in the rotational direction. Can be.

In addition, a through hole 200a for the fastening bolt 320 may be formed in the second unit gear 200. In this case, the through hole 200a for the fastening bolt 320 is a through hole for the adjusting bolt 310 so that the relative position of the second unit gear 200 with respect to the first unit gear 100 can be adjusted. It may be formed in the same shape and / or size as 200a).

When the first unit gear 100 and the second unit gear 200 are combined, a shaft may be formed at one side and a hole may be formed at the other side so that the rotation center may be maintained. In the embodiment illustrated in the drawing, the first unit gear 100 and the second unit are formed by forming an axis in the first unit gear 100, forming a hole in the second unit gear 200, and the shaft being fitted into the hole. Gears 200 may be coupled to each other.

Hereinafter, the assembling method of the anti-backlash gear device 10 will be described.

When assembling the gear device 1, the first unit gear 100 and the second unit gear 200 of the first gear 10 on the driving motor side are left assembled, and the first gear 10 on the load side. The second gear 20 is assembled to engage the second gear 20.

In a state where the second gear 20 on the load side is fixed so as not to rotate, the countersunk head bolt corresponding to the adjustment bolt 310 is assembled. At this time, the first unit gear 100 and the second unit gear 200 are rotated in a slightly different direction, so that the first unit gear tooth 101 and the second unit gear tooth 201 are respectively the second gear ( 20 to be in close contact with each of the adjacent second gear teeth 21, and then fasten and fasten the fastening bolt 320. In addition, the adjustment bolt 310 is tightened once again to fix it.

In this way, the precision of the gears is machined to the level of precision required by the machinery, but by adjusting during assembly to eliminate possible gaps between the teeth of the drive gear and the teeth of the driven gear, reducing or preventing backlash. Can be.

At this time, the size and quantity of the fastening bolt 320 and the size and quantity of the adjustment bolt 310 to cause the fine rotation can be appropriately selected according to the size and degree of the driving force transmitted by the gear device 10.

Meanwhile, in order to prevent the adjustment bolt 310 and / or the fastening bolt 320 fastened to the screw tab 100a from being loosened and loosened, the screw fixing device may be attached to the adjustment bolt 310 and / or the fastening bolt 320. 400 may be mounted. In this case, the screw fixing device 400 may fasten a lock tight or apply an additional screw fixing device.

By constructing the gear device 10 capable of preventing or reducing backlash as described above, it is possible to implement a gear device for preventing backlash at a low cost in constructing a power transmission device by the gear device 1.

According to the present invention, by backing the two or more gears by adjusting the rotation angle, it is possible to reduce backlash.

Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, it is merely an example, and those skilled in the art may realize various modifications and equivalent other embodiments therefrom. I can understand. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

1: gear device, 10: first gear,
20: second gear, 100: first unit gear,
200: second unit gear, 200a: thread tap,
300: fastening means, 400: screw fixing device.

Claims (13)

A first unit gear having at least one screw tab formed thereon and having a certain number of gear teeth;
A second through hole communicating with the screw tab and having the same number of gear teeth as the first unit gear and being in surface contact with the first unit gear such that the gear teeth are alternately arranged with the gear teeth of the first unit gear; Unit gears; And
And a fastening means penetrating the through hole and engaged with the screw tab to engage the first unit gear and the second unit gear. The method of claim 1,
The first unit gear and the second unit gear coupled to each other forms a first gear,
And a second gear having a gear tooth engaged with the pair of gear teeth in contact with each other of the first unit gear and the second unit gear. The method of claim 2,
The gear device wherein the first gear is any one of a drive gear and a driven gear. The method of claim 2,
One gear tooth of the pair of gear teeth of the first unit gear and the second unit gear of the first gear that is in contact with each other is in contact with one of the neighboring gear teeth of the second gear, The gear arrangement of the other of the first gear is in contact with the gear tooth of the other one of the neighboring gear teeth of the second gear. The method of claim 1,
And said fastening means is a threaded bolt on said at least part of the circumferential surface of said threaded tab. The method of claim 1,
The fastening means,
An adjustment bolt for adjusting a relative position of the gear tooth of the first unit gear and the gear tooth of the second unit gear;
And a fastening bolt for fixing the first unit gear and the second unit gear to each other. The method of claim 6,
And the adjusting bolt is a countersunk head bolt having a countersunk head. The method of claim 6,
And the number of each of the adjustment bolt and the fastening bolt is a multiple of three. The method of claim 1,
The gear device of the second unit gear is larger than the thread tap of the first unit gear. The method of claim 1,
The gear device of claim 2, wherein the through hole of the second unit gear extends in the rotational direction of the gear. The method of claim 1,
And a screwing device for preventing the fastening means fastened to the screw tab from being released. The method of claim 2,
Wherein the first gear is a rack gear and the second gear is a pinion gear. The method of claim 2,
Wherein the first gear is a pinion gear and the second gear is a rack gear.
KR1020100031880A 2010-04-07 2010-04-07 Gear KR20110112652A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102720826A (en) * 2012-07-04 2012-10-10 无锡桥联数控机床有限公司 Backlash eliminating transmission structure of gearbox input shaft
CN103244661A (en) * 2013-05-31 2013-08-14 安徽中鼎减震橡胶技术有限公司 Noise reduction chuck for eliminating gear clearance
CN104763801A (en) * 2015-02-10 2015-07-08 赵言正 Backlash eliminated structure for gear
CN108119642A (en) * 2016-12-30 2018-06-05 上海丰禾精密机械有限公司 For the fixed gear-driven tooth space eliminating mechanism of centre-to-centre spacing and its removing method
KR101877509B1 (en) * 2013-06-27 2018-07-11 스카니아 씨브이 악티에볼라그 Method and device for adjusting the play of a gear transmission
CN108679567A (en) * 2018-05-25 2018-10-19 广州市浩洋电子股份有限公司 A kind of stage lighting effect assemblies and the stage lighting optical system with it
KR102021933B1 (en) * 2018-04-10 2019-09-17 입체코퍼레이션(주) Reduction gear of machine tool
WO2021128622A1 (en) * 2019-12-24 2021-07-01 广州市浩洋电子股份有限公司 Precision gear transmission member, and stage lamp having same
WO2021128620A1 (en) * 2019-12-24 2021-07-01 广州市浩洋电子股份有限公司 Stage lamp using gears to drive lamp head to rotate
WO2021223845A1 (en) * 2020-05-05 2021-11-11 X-Invent Gmbh Gear having at least two rows of teeth offset axially and in the direction of rotation
WO2023041650A1 (en) * 2021-09-17 2023-03-23 Robocath Articulated support arm for a catheter robot for handling an elongate flexible medical instrument, comprising a brake

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102720826A (en) * 2012-07-04 2012-10-10 无锡桥联数控机床有限公司 Backlash eliminating transmission structure of gearbox input shaft
CN103244661A (en) * 2013-05-31 2013-08-14 安徽中鼎减震橡胶技术有限公司 Noise reduction chuck for eliminating gear clearance
US10161496B2 (en) 2013-06-27 2018-12-25 Scania Cv Ab Method and device for adjusting the play of a gear transmission
KR101877509B1 (en) * 2013-06-27 2018-07-11 스카니아 씨브이 악티에볼라그 Method and device for adjusting the play of a gear transmission
CN104763801A (en) * 2015-02-10 2015-07-08 赵言正 Backlash eliminated structure for gear
CN108119642A (en) * 2016-12-30 2018-06-05 上海丰禾精密机械有限公司 For the fixed gear-driven tooth space eliminating mechanism of centre-to-centre spacing and its removing method
KR102021933B1 (en) * 2018-04-10 2019-09-17 입체코퍼레이션(주) Reduction gear of machine tool
CN108679567A (en) * 2018-05-25 2018-10-19 广州市浩洋电子股份有限公司 A kind of stage lighting effect assemblies and the stage lighting optical system with it
WO2021128622A1 (en) * 2019-12-24 2021-07-01 广州市浩洋电子股份有限公司 Precision gear transmission member, and stage lamp having same
WO2021128620A1 (en) * 2019-12-24 2021-07-01 广州市浩洋电子股份有限公司 Stage lamp using gears to drive lamp head to rotate
EP3862622A4 (en) * 2019-12-24 2021-08-11 Guangzhou Haoyang Electronic Co., Ltd. Stage lamp using gears to drive lamp head to rotate
EP3872369A4 (en) * 2019-12-24 2021-09-01 Guangzhou Haoyang Electronic Co., Ltd. Precision gear transmission member, and stage lamp having same
WO2021223845A1 (en) * 2020-05-05 2021-11-11 X-Invent Gmbh Gear having at least two rows of teeth offset axially and in the direction of rotation
WO2023041650A1 (en) * 2021-09-17 2023-03-23 Robocath Articulated support arm for a catheter robot for handling an elongate flexible medical instrument, comprising a brake

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