CN101672357A - Gear clearance elimination mechanism - Google Patents

Gear clearance elimination mechanism Download PDF

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Publication number
CN101672357A
CN101672357A CN200910206149A CN200910206149A CN101672357A CN 101672357 A CN101672357 A CN 101672357A CN 200910206149 A CN200910206149 A CN 200910206149A CN 200910206149 A CN200910206149 A CN 200910206149A CN 101672357 A CN101672357 A CN 101672357A
Authority
CN
China
Prior art keywords
gear
clearance elimination
driven gear
driven
elimination mechanism
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN200910206149A
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Chinese (zh)
Inventor
代国辉
严红毅
钟瑞龄
肖庆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yichang Changjiang Machine Technology Co Ltd
Original Assignee
Yichang Changjiang Machine Technology Co Ltd
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 Yichang Changjiang Machine Technology Co Ltd filed Critical Yichang Changjiang Machine Technology Co Ltd
Priority to CN200910206149A priority Critical patent/CN101672357A/en
Publication of CN101672357A publication Critical patent/CN101672357A/en
Pending legal-status Critical Current

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Abstract

A gear clearance elimination mechanism comprises a driving gear and a driven gear. A clearance elimination gear is jointed with the driven gear by a pressure plate and has the same modulus as that ofthe driving gear and the driven gear, and the number of teeth of the clearance elimination gear is that of the driven gear plus 1. A screw penetrates through the clearance elimination gear, and the other end of the screw is provided with a bushing and a disk spring which is matched with the bushing. The gear clearance elimination mechanism can be applied to a power drive part of a gear hobber. Asthe clearance elimination gear is added to an original gear pair, and a roller power section of the clearance elimination mechanism is adopted, the clearance elimination mechanism has the advantages of increasing cutting force with cutting depth up to 2-2.5 times of that of the existing gear hobbers, being capable of improving cutting speed, reducing working noise, performing hard tooth face machining, lowering machining cost, shortening production cycle and improving machining efficiency.

Description

A kind of gear clearance elimination mechanism
Technical field
The present invention relates to a kind of device that is used to eliminate backlash between the gear.
Background technique
The gear hobbing machine power transmission mainly contains dual mode at present: gear transmission, worm and gear transmission.Wherein gear transmission speed is fast, but transmission is not steady, and the worm and gear transmission speed is slow, stable drive.Fig. 1 is a pair of gear transmission simplified schematic diagram: being labeled as 1 gear is to be driving wheel, is labeled as gear 2 and is follower, and driving gear 1 drives driven gear 2 and rotates.Under the normal condition, gear pair all has certain sideshake to exist, and the gap among Fig. 1 between flank of tooth a and the flank of tooth b is sideshake.When being subjected to external force (gear hobbing machine hobboing cutter cutting force), gear 2 does the time spent, resiliently deformable will take place in the contact Tooth of it and gear 1, thereby produce the elastic deformation force, if external force is snatch force (gear hobbing machine hobboing cutter cutting force is snatch force), when external force diminishes, because elastic deformation force's effect, driven gear 2 will obtain an acceleration, make the rotational velocity of its rotational velocity, thereby break away from original contact Tooth, as shown in the figure greater than gear 1, contact with flank of tooth b up to flank of tooth a, gear 1 is given 2 one opposite forces of gear, and the rotational velocity of gear 2 descends, up to original contact Tooth contact, quicken again then, slow down, go round and begin again, thereby cause transmission not steady, efficient is but cut in influence.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of gear clearance elimination mechanism, and it can eliminate the backlash of driving gear pair, thereby guarantees gear-driven stationarity.
The object of the present invention is achieved like this: a kind of gear clearance elimination mechanism, comprise driving gear and driven gear, driving gear matches with driven gear, clearance elimination gear is fitted by the platen and the driven gear teeth, clearance elimination gear and driving gear, driven gear modulus are identical, and the number of teeth of clearance elimination gear is that the number of teeth of driven gear adds 1.
Screw passes clearance elimination gear, the dish spring that the other end of screw is provided with ring set and matches with ring set.
The centre distance of clearance elimination gear and driving gear is identical with the centre distance of driven gear and driving gear.
Gear clearance elimination mechanism provided by the invention, can be applicable to the gear hobbing machine motivation transfer motion part, owing on the basis of original gear pair, increased clearance elimination gear, can eliminate the backlash of driving gear pair, thereby guarantee gear-driven stationarity, adopt the roller press machinable power of this anti-backlash mechanism to increase, depth of cut can be 2-2.5 times of present gear hobbing machine; Cutting speed can improve 50%-100%; Can reduce noise greatly; Can carry out hard flank of tooth processing; Greatly reduce processing cost, shortened the manufacture cycle, improve work efficiency.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is an ordinary gear subtask schematic diagram.
Fig. 2 is a structural representation of the present invention.
Fig. 3 is driving gear of the present invention, driven gear and clearance elimination gear fundamental diagram.
Embodiment
As shown in Figures 2 and 3, the present invention includes driving gear 1 and driven gear 2, driving gear 1 cooperates with driven gear 2, clearance elimination gear 7 is fitted by the platen 6 and the driven gear teeth 2, clearance elimination gear 7 and driving gear 1, driven gear 2 moduluses are identical, and the number of teeth of clearance elimination gear 7 is that the number of teeth of driven gear 2 adds 1.Screw 2 passes clearance elimination gear 7, the dish spring 3 that the other end of screw 5 is provided with ring set 4 and matches with ring set 4.Clearance elimination gear 7 is identical with the centre distance of driving gear 1 with the centre distance and the driven gear 2 of driving gear 1.
Working principle of the present invention is as follows:
Driving gear 1 and driven gear 2 are a pair of normal driving gear pair, and the number of teeth is respectively Z1, Z2, and centre distance is L; Clearance elimination gear 3 and driving gear 1, driven gear 2 moduluses are identical, and clearance elimination gear 3 also be L with the centre distance of driving gear 1, and the number of teeth of clearance elimination gear 3 is Z2+1, and clearance elimination gear 3 is by platen 6 and driven gear 2 applyings, between produce stiction.Movement process is: driving gear 1 drives driven gear 2 and rotates, driven gear 2 drives clearance elimination gear 3 by stiction and rotates together, because clearance elimination gear 3 is than more than 2 teeth of driven gear, the corner of each tooth is less than the corner of each tooth of driven gear 2, like this through after rotating plurality of teeth, reach position shown in Fig. 3 diagrammatic sketch, the left flank of tooth of clearance elimination gear 3 contacts with the right flank of tooth of driving gear 1, as be rotated further, then eliminate gear 3 and will produce slip with driven gear 2, between form force of sliding friction f, eliminate the right flank of tooth that gear 3 affacts this frictional force f driving gear 1, the left and right sides flank of tooth of driving gear 1 contacts with the right left flank of tooth of driven gear 2 and clearance elimination gear 3 respectively like this, has formed the gear transmission of no sideshake.When driven gear 2 suffered external force are snatch force, as long as force of sliding friction f is enough big, balance out the elastic deformation force that driving gear 1 and driven gear 2 contact Tooth produce, so just stoped when external force diminishes, because elastic deformation force's effect, driven gear 2 will obtain the possibility of an acceleration, thereby keep the stationarity of transmission process.Size by force of sliding friction f between spiral shell 5 nails and dish spring 3 adjusting driven gears 2 and the clearance elimination gear 3.

Claims (3)

1, a kind of gear clearance elimination mechanism, comprise driving gear (1) and driven gear (2), driving gear (1) matches with driven gear (2), it is characterized in that: clearance elimination gear (7) is fitted by the platen (6) and the driven gear teeth (2), clearance elimination gear (7) and driving gear (1), driven gear (2) modulus are identical, and the number of teeth of clearance elimination gear (7) is that the number of teeth of driven gear (2) adds 1.
2, gear clearance elimination mechanism according to claim 1 is characterized in that: screw (2) passes clearance elimination gear (7), the dish spring (3) that the other end of screw (5) is provided with ring set (4) and matches with ring set (4).
3, gear clearance elimination mechanism according to claim 1 and 2 is characterized in that: clearance elimination gear (7) is identical with the centre distance of driving gear (1) with the centre distance and the driven gear (2) of driving gear (1).
CN200910206149A 2009-10-10 2009-10-10 Gear clearance elimination mechanism Pending CN101672357A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910206149A CN101672357A (en) 2009-10-10 2009-10-10 Gear clearance elimination mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910206149A CN101672357A (en) 2009-10-10 2009-10-10 Gear clearance elimination mechanism

Publications (1)

Publication Number Publication Date
CN101672357A true CN101672357A (en) 2010-03-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN200910206149A Pending CN101672357A (en) 2009-10-10 2009-10-10 Gear clearance elimination mechanism

Country Status (1)

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CN (1) CN101672357A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102658400A (en) * 2012-06-07 2012-09-12 天津第一机床总厂 Digital control gear milling machine of spiral bevel gear
CN102658495A (en) * 2012-06-07 2012-09-12 天津第一机床总厂 Cutter spindle box of numerically-controlled spiral bevel gear milling machine
CN103016680A (en) * 2012-12-20 2013-04-03 西南计算机有限责任公司 Automatic tooth backlash eliminating mechanism of gear pair
CN103307255A (en) * 2013-06-09 2013-09-18 诸暨市振兴机器制造有限公司 Gear transmission system capable of eliminating gear transmission clearance
CN104443563A (en) * 2014-12-02 2015-03-25 成都三可实业有限公司 Anti-backlash gear assembly for transverse sealing device
CN112728058A (en) * 2020-10-14 2021-04-30 重庆长安工业(集团)有限责任公司 Internal tooth meshing type anti-backlash transmission mechanism

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102658400A (en) * 2012-06-07 2012-09-12 天津第一机床总厂 Digital control gear milling machine of spiral bevel gear
CN102658495A (en) * 2012-06-07 2012-09-12 天津第一机床总厂 Cutter spindle box of numerically-controlled spiral bevel gear milling machine
CN102658495B (en) * 2012-06-07 2015-04-22 天津第一机床总厂 Cutter spindle box of numerically-controlled spiral bevel gear milling machine
CN102658400B (en) * 2012-06-07 2015-04-22 天津第一机床总厂 Digital control gear milling machine of spiral bevel gear
CN103016680A (en) * 2012-12-20 2013-04-03 西南计算机有限责任公司 Automatic tooth backlash eliminating mechanism of gear pair
CN103307255A (en) * 2013-06-09 2013-09-18 诸暨市振兴机器制造有限公司 Gear transmission system capable of eliminating gear transmission clearance
CN104443563A (en) * 2014-12-02 2015-03-25 成都三可实业有限公司 Anti-backlash gear assembly for transverse sealing device
CN112728058A (en) * 2020-10-14 2021-04-30 重庆长安工业(集团)有限责任公司 Internal tooth meshing type anti-backlash transmission mechanism

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Open date: 20100317