CN105108554B - The elimination backlash structure of gear drive - Google Patents
The elimination backlash structure of gear drive Download PDFInfo
- Publication number
- CN105108554B CN105108554B CN201510511106.2A CN201510511106A CN105108554B CN 105108554 B CN105108554 B CN 105108554B CN 201510511106 A CN201510511106 A CN 201510511106A CN 105108554 B CN105108554 B CN 105108554B
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- China
- Prior art keywords
- gear
- shaft
- output
- split
- driven helical
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Classifications
-
- 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
-
- 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
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
- B23Q5/46—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously with variable speed ratio
- B23Q5/48—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously with variable speed ratio by use of toothed gears
Abstract
The invention discloses a kind of elimination backlash structure of gear drive, output shaft is two pieces, is respectively provided with the first driven helical gear first output gear shaft, is provided with the second driven helical gear second output gear shaft；Output gear on first output gear shaft, the second output gear shaft is engaged with bull gear；Central shaft is provided with two contrary active oblique gears of the hand of spiral；First driven helical gear, the second driven helical gear are engaged with two active oblique gears respectively；Central shaft is provided with axial location adjustment structure.Using above-mentioned technical proposal, bull gear is driven by two small transmission gears, and pre-add eliminates the mode in gap, while by way of split gear enters line misregistration, eliminating the sideshake of gear, operation speed governing is convenient；Gear clearance can be effectively eliminated, the revolution positioning precision and repetitive positioning accuracy of gear machine is improved, so as to improve the machining accuracy of lathe.
Description
The application is the divisional application of following patent application：
Original bill application title：The elimination backlash structure of gear drive
Original bill application number：201310632779.4
The original bill applying date：On November 28th, 2013
Technical field
The invention belongs to the technical field of mechanical processing machine, is related to the drive mechanism of NC heavy lathe, more specifically
Say, the present invention relates to a kind of elimination backlash structure of gear drive.
Background technology
The rotary table of NC heavy lathe, using gear-wheel gear-ring drive mechanism.Arrange i.e. on the workbench of lathe big
Gear ring, the driving gear on the output shaft of reducing gear are engaged with bull gear.Operationally, bull gear is driven by driving gear
Motion, so as to realize the gyration of workbench, carries out machining.
But, the error that gear is produced in processing, and the friction in operation process, can all make the backlash of gear
Increase, affects the rotating accuracy and repetitive positioning accuracy of lathe, so as to affect the machining accuracy of lathe.
The content of the invention
The present invention provides a kind of elimination backlash structure of gear drive, its objective is to eliminate gear clearance, carries
The revolution positioning precision of high gear machine and repetitive positioning accuracy.
To achieve these goals, the technical scheme taken of the present invention is：
The elimination backlash structure of the gear drive of the present invention, is applied to multilevel gear drive mechanism, including defeated
Enter shaft gear, output shaft and central shaft；Described multilevel gear drive mechanism drives the bull gear of operating mechanism, and described is defeated
Shaft is two pieces, is respectively provided with the first driven helical gear first output gear shaft, is provided with second driven helical gear second
Output gear shaft；Output gear on first output gear shaft, the second output gear shaft is engaged with the bull gear；Institute
State central shaft and be provided with two contrary active oblique gears of the hand of spiral；The first driven helical gear, the second driven helical gear
Engage with two active oblique gears respectively；The central shaft is provided with axial location adjustment structure.
Described axial location adjustment structure is provided with disk spring, cylinder radial roller bearing and adjusting nut, described
Disk spring be enclosed within the end of central shaft, one end withstands on the end of the cylinder radial roller bearing, and the other end is by the tune
Section nut is compressed.
Described input shaft gear is engaged with the split gear on II axle；On shaft gear and III axle on II described axle
Split gear is engaged；Shaft gear on III axle is engaged with the split gear on central shaft；Described split gear includes two
The individual coaxial and equal gear sheet of the number of teeth, modulus, is connected by fastening bolt；Described split gear is provided with elimination gap machine
Structure.
Described elimination clearance mechanism is to be provided with tangential slot on a plate gear in split gear, on another plate gear
If the straight pin being fastenedly connected with which is simultaneously stretched in tangential slot；The compression spring of arranged tangential, described pressure are set in tangential slot
Contracting spring one end withstands the end of tangential slot by steel ball, and the other end withstands described straight pin.
Described fastening bolt be connected with the plate gear in split gear by helical structure；On another plate gear
Mounting hole of the connecting hole of fastening bolt for tangential distribution.
The present invention adopts above-mentioned technical proposal, bull gear is driven by two small transmission gears, and pre-add disappears
Except the mode in gap, while by way of split gear enters line misregistration, eliminating the sideshake of gear, operation speed governing is convenient；
Gear clearance can be effectively eliminated, the revolution positioning precision and repetitive positioning accuracy of gear machine is improved, so as to improve lathe
Machining accuracy.
Description of the drawings
Below the content and the labelling in figure expressed by each width accompanying drawing of this specification is briefly described：
Fig. 1 is the drive system expanded schematic diagram of the present invention；
Fig. 2 is the end view of drive mechanism of the present invention；
Fig. 3 is the structural representation that split gear eliminates gap；
The detailed construction schematic diagram of the axial location adjustment structure of axle centered on Fig. 4.
It is labeled as in figure：
1st, input shaft gear, 2, split gear, 3, II axle, 4, split gear, 5, III axle, 6, active oblique gear, 7, cylinder
Radial roller bearing, 8, disk spring, 9, central shaft (IV axle), the 10, first output gear shaft (VI axle), 11, first it is driven tiltedly
Gear, the 12, second output gear shaft (V axle), the 13, second driven helical gear, 14, bull gear, 15, fastening bolt, 16, steel ball,
17th, compression spring, 18, straight pin, 19, adjusting nut.
Specific embodiment
Below against accompanying drawing, by the description to embodiment, further details of is made to the specific embodiment of the present invention
Illustrate there be more complete, accurate and deep reason to inventive concept of the invention, technical scheme to help those skilled in the art
Solution.
The structure of the present invention as shown in Figure 1, is a kind of elimination backlash structure of gear drive, is applied to drive
The multilevel gear drive mechanism of dynamic NC heavy rotary table, including input shaft (I axle), input shaft gear 1, output shaft (VI
Axle, V axle) and central shaft 9 (IV axle)；Described multilevel gear drive mechanism drives the bull gear 14 of operating mechanism.Lathe
Workbench revolution when (B axle), using gear-wheel gear-ring drive mechanism.
In order to solve the problems, such as prior art and overcome its defect, realize eliminating gear clearance, improve gear machine
Revolution positioning precision and repetitive positioning accuracy goal of the invention, the present invention adopts the technical scheme that：
As shown in Figures 1 to 4, the elimination backlash structure of gear drive of the invention, output shaft therein is
Two pieces, is respectively provided with the first output gear shaft 10 of the first driven helical gear 11, is provided with the second of the second driven helical gear 13
Output gear shaft 12；Output gear on first output gear shaft 10, the second output gear shaft 12 with the bull gear
14 engagements；The central shaft 9 is provided with two contrary active oblique gears 6 of the hand of spiral；The first driven helical gear 11,
Two driven helical gears 13 are engaged with two active oblique gears 6 respectively；The central shaft 9 is provided with axial location adjustment structure.
Servomotor drives input shaft gear 1, input shaft gear 1 to engage with split gear 2, and Jing tri- is to gear pair (each pair
4) gear, eliminates the backlash (bullet of gear containing split gear, i.e. split gear 2, split gear by eliminating clearance mechanism
Spring disappears gap), motion is reached into central shaft 9, by two helical gears on central shaft 9 (IV axle), i.e. two in figure active helical teeth
Wheel 6 is engaged with the first driven helical gear 11, the second driven helical gear 13 respectively, drives the first output gear shaft 10, second to export
Gear shaft 12.
In order to improve the positioning precision and repetitive positioning accuracy of work table rotation, using preload double pinion backlash eliminating equipment and
Split gear backlash eliminating equipment, is shown in Fig. 1.It is defeated on two output pinions, i.e. the first output gear shaft 10, the second output gear shaft 12
Go out the driven helical gear 11 of gear, i.e., first, the second driven helical gear 13 to be nibbled with two lateral surface of 14 profile of tooth of bull gear simultaneously respectively
Close, drive workbench to carry out gyration.Drive position relation is shown in Fig. 1 and Fig. 2.
Axial location adjustment structure is shown in Fig. 4：
Described axial location adjustment structure is provided with disk spring 8, cylinder radial roller bearing 7 and adjusting nut 19,
Described disk spring 8 is enclosed within the end of central shaft 9, and one end withstands on the end of the cylinder radial roller bearing 7, the other end by
The adjusting nut compresses 19.
The axial location of above-mentioned axial location adjustment structure adjustment central shaft 9 (IV axle), eliminate two output pinions with it is big
Backlash between gear ring 14.Its method of adjustment is：
As Fig. 4, the first output gear shaft 10 (VI axle) expansion sleeve unclamp, the second output gear shaft 12 (V axle) expansion sleeve rises
Tightly, the first output gear shaft 10 (VI axle) drops to back lash maximum position, and it is motionless to pull III axle 5 clockwise, makes second defeated
The flank of tooth of the output gear gone out on gear shaft 12 (V axle) and the flank engagement of bull gear 14, right backlash is eliminated, such as Fig. 2 institutes
Show；At the same time, turn clockwise the first driven helical gear 11, the gap in elimination and central shaft 9 between helical gear, counterclockwise
The second output gear shaft 12 (V axle) is pulled, makes the output gear flank of tooth of the second output gear shaft 12 (V axle) another with bull gear 14
One flank engagement, eliminates the gap of left surface, fastens the expansion sleeve screw in the first driven helical gear 11.
The setting of split gear is：
As shown in Figure 1 and Figure 2, described input shaft gear 1 is engaged with the split gear 2 on II axle 3；On II described axle 3
Shaft gear engage with the split gear 4 on III axle 5；Shaft gear on III axle 5 is nibbled with the split gear on central shaft 9
Close；Described split gear includes two coaxial and equal gear sheets of the number of teeth, modulus, is connected by fastening bolt 15；It is described
Split gear be provided with elimination clearance mechanism.
As shown in figure 3, eliminate clearance mechanism being：
Described elimination clearance mechanism is to be provided with tangential slot on a plate gear in split gear, on another plate gear
If the straight pin 18 being fastenedly connected with which is simultaneously stretched in tangential slot；The compression spring 17 of arranged tangential is set in tangential slot, it is described
17 one end of compression spring the end of tangential slot is withstood by steel ball 16, the other end withstands described straight pin 18.
Described fastening bolt 15 be connected with the plate gear in split gear by helical structure；On another plate gear
Fastening bolt 15 connecting hole for tangential distribution mounting hole.
The gap method of adjustment as shown in figure 3, split gear disappears：
Fastening bolt 15 is unclamped, by the effect of the compression spring 17 in split gear, the upper and lower two panels tooth of split gear
Wheel produces dislocation in gyratory directions, and the two sides of two plate gears are engaged simultaneously with institute's meshed gears two sides respectively, by center
Gap before axle 9 eliminates, and then locks fastening bolt 15.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that the present invention is implemented
Restriction, as long as employing the improvement of various unsubstantialities that method of the present invention design and technical scheme are carried out, or without changing
Enter and the design of the present invention and technical scheme are directly applied to into other occasions, within protection scope of the present invention.
Claims (2)
1. the elimination backlash structure of gear drive, is applied to multilevel gear drive mechanism, including input shaft gear
(1), output shaft and central shaft (9)；Described multilevel gear drive mechanism drives the bull gear (14) of operating mechanism；
Described output shaft is two pieces, is respectively provided with first output gear shaft (10) of the first driven helical gear (11), is provided with
Second output gear shaft (12) of the second driven helical gear (13)；First output gear shaft (10), the second output gear shaft
(12) output gear on is engaged with the bull gear (14)；The central shaft (9) is provided with contrary two of the hand of spiral
Active oblique gear (6)；
It is characterized in that：
The first driven helical gear (11), the second driven helical gear (13) are engaged with two active oblique gears (6) respectively；It is described
Central shaft (9) is provided with axial location adjustment structure；
Described input shaft gear (1) is engaged with the split gear (2) on II axle (3)；Shaft gear on described II axle (3) with
Split gear (4) engagement on III axle (5)；Shaft gear on III axle (5) is engaged with the split gear on central shaft (9)；
Described split gear includes two coaxial and equal gear sheets of the number of teeth, modulus, is connected by fastening bolt (15)；Described
Split gear is provided with elimination clearance mechanism；
Described fastening bolt (15) is connected with the plate gear in split gear by helical structure；It is tight on another plate gear
Mounting hole of the connecting hole of fixing bolt (15) for tangential distribution；
Described elimination clearance mechanism is to be provided with tangential slot on a plate gear in split gear, set on another plate gear with
Straight pin (18) which is fastenedly connected simultaneously is stretched in tangential slot；The compression spring (17) of arranged tangential is set in tangential slot, it is described
Compression spring (17) one end the end of tangential slot is withstood by steel ball (16), the other end withstands described straight pin (18).
2. according to the elimination backlash structure of the gear drive described in claim 1, it is characterised in that：Described axial direction
Position adjustment structure is provided with disk spring (8), cylinder radial roller bearing (7) and adjusting nut (19), described dish-shaped bullet
Spring (8) is enclosed within the end of central shaft (9), and one end withstands on the end of the cylinder radial roller bearing (7), and the other end is by the tune
Section nut (19) is compressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510511106.2A CN105108554B (en) | 2013-11-28 | 2013-11-28 | The elimination backlash structure of gear drive |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510511106.2A CN105108554B (en) | 2013-11-28 | 2013-11-28 | The elimination backlash structure of gear drive |
| CN201310632779.4A CN103753333B (en) | 2013-11-28 | 2013-11-28 | The elimination backlash structure of gear drive |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310632779.4A Division CN103753333B (en) | 2013-11-28 | 2013-11-28 | The elimination backlash structure of gear drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105108554A CN105108554A (en) | 2015-12-02 |
| CN105108554B true CN105108554B (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510511106.2A Active CN105108554B (en) | 2013-11-28 | 2013-11-28 | The elimination backlash structure of gear drive |
| CN201310632779.4A Active CN103753333B (en) | 2013-11-28 | 2013-11-28 | The elimination backlash structure of gear drive |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310632779.4A Active CN103753333B (en) | 2013-11-28 | 2013-11-28 | The elimination backlash structure of gear drive |
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| CN (2) | CN105108554B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105269382B (en) * | 2014-07-07 | 2017-11-14 | 协鸿工业股份有限公司 | It is sleeping ward off toolroom machine can adjust automatically backlash B axle device |
| CN104128835A (en) * | 2014-07-18 | 2014-11-05 | 宁波夏拓机械装备有限公司 | Bevel gear gap eliminating mechanism and gap eliminating method |
| CN104589130A (en) * | 2015-02-02 | 2015-05-06 | 芜湖瑞精机床有限责任公司 | Clearance elimination gear device for upward and downward movement of power head of numerical control drilling machine |
| CN105972159B (en) * | 2016-07-19 | 2019-03-05 | 东莞市埃弗米数控设备科技有限公司 | The self-regulation gap-eliminating structure of tooth transmission |
| CN107387730B (en) * | 2017-09-21 | 2023-09-12 | 重庆斯川机械制造有限公司 | Herringbone gear with combined structure and processing method thereof |
| CN110193747A (en) * | 2019-06-28 | 2019-09-03 | 环球工业机械（东莞）有限公司 | Ram drive gap eliminates component |
| CN110355805A (en) * | 2019-08-02 | 2019-10-22 | 浙江欧利特科技股份有限公司 | The rotor transmission mechanism of cutting machine |
| CN112720022A (en) * | 2020-12-30 | 2021-04-30 | 天水星火机床有限责任公司 | Vertical double gear gap eliminating speed reducer that feeds of horizontal lathe |
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| EP1092500A1 (en) * | 1999-10-14 | 2001-04-18 | F.M. Elettromeccanica s.r.l. | Rotary motion transmission system without backlash and machine tool head using said transmission system |
| CN2755358Y (en) * | 2004-10-29 | 2006-02-01 | 哈尔滨量具刃具集团有限责任公司 | Transmission backlash eliminating device of helical gears |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105108554A (en) | 2015-12-02 |
| CN103753333B (en) | 2016-02-24 |
| CN103753333A (en) | 2014-04-30 |
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