CN201851631U

CN201851631U - Anti-backlash double-gear box device

Info

Publication number: CN201851631U
Application number: CN2010206235421U
Authority: CN
Inventors: 李强
Original assignee: XI'AN FUSITE POWER TECHNOLOGY Co Ltd
Current assignee: XI'AN FUSITE POWER TECHNOLOGY Co Ltd
Priority date: 2010-11-25
Filing date: 2010-11-25
Publication date: 2011-06-01
Anticipated expiration: 2020-11-25

Abstract

The utility model discloses an anti-backlash double-gear box device, which comprises a servo motor. The servo motor is connected with a driving gear through a motor shaft, the driving gear is in meshing connection with a driven gear and a driven gear D sequentially, the driven gear is coaxially connected with a gear A though a clutch, the gear A is in meshing connection with a gear B, the gear B is coaxially connected with a gear C through a connecting shaft, the gear C is in meshing connection with a main gear, and the main gear is subjected to transmission output through an output shaft. Besides, the driven gear D is coaxially connected with a gear F through a clutch E, the gear F is in meshing connection with a gear G, the gear G is coaxially connected with a gear I through a connecting shaft H, the gear I is in meshing connection with the main gear, and the main gear is connected with the output shaft. The anti-backlash double-gear box device effectively eliminates errors generated form a machine tool or a mechanical transmission shaft, increases transmission precision of an integral transmission chain, increases processing precision greatly, and is free of limitation of torque, convenient in use and capable of reducing cost obviously.

Description

Two gear clearance elimination case apparatus

Technical field

The utility model belongs to mechanical equipment technical field, relates to for lathe X-axis or other transmission devices, can realize the forward and reverse crack that disappears of transmission shaft, is specifically related to a kind of pair of gear clearance elimination case apparatus.

Background technique

The transmission accuracy of Transmitted chains is an important step of servodrive design, if the composition component of transmission device (gear, axle, bearing, casing) make, assemble absolutely accurate, to the temperature deformation in the using process, resiliently deformable also can be ignored, so, in transmission process, the measure that the output shaft corner improves transmission accuracy has following several in theory: the precision that 1) suitably improves component itself; 2) reasonably design Transmitted chains, reduce component manufacturing, assembly error influence driving error and return difference.3) adopt mechanical checkout or machine feedback machinery, reduce or eliminate driving error.4) adopt backlash eliminating equipment, reduce or eliminate return difference.

Measure 1), 2) discuss theoretically, can suitably improve transmission accuracy, but a series of problems make that the method is difficult to realize on the technology of actual manufacturing.Measure 3) it is loaded down with trivial details also to exist calculate early stage, and can't once calculate and put in place, need carry out the calculated data adjustment repeatedly, and operation easier is big, and problem such as can't solve in the high pulling torque transmission.Employing measure 4) the crack machinery that disappears becomes the method for practicable common consideration in the present transmission device territory.

At present the crack mechanical structure that disappears of mechanical transmission fields is divided into electricity crack and the machinery crack two big classes that disappear that disappear.The disappear crack principle that disappears in crack of electricity is to control two cover backward driving devices respectively by two actuating motors, realizes the crack that disappears by motor torque adjustment respectively of moment in transmission process.The method shortcoming deficiency is: cost increases, and needs to increase a cover servo drive system.

The existing mechanical field, crack that disappears mainly comprises following several mode: 1) the centre distance adjustment crack that disappears.This is to adjust centre distance according to the situation of nibbling when assembling, to reach the purpose that reduces backlash.This mode can compensate the normal value backlash that the thick error of gear and centre distance error cause, but can not compensate the variate backlash that the eccentric type error causes.2) spring-loaded floating gear anti-backlash mechanism.This mode relies on spring-loaded, makes tooth and tooth tight engagement and reaches the purpose in the crack that disappears, but can only apply to the less occasion of torque, and can only eliminate whole backlash that gear itself causes, can not eliminate the backlash that bearing and other factors cause.3) gear clearance elimination mechanism of adjustment pad.This kind mode is that gear is being moved axially, and reaches the purpose that reduces backlash, but can only eliminate the normal value part in the backlash.4) nylon sandwich gear clearance elimination mechanism.The structure that applies to only in the data transmission is used, and load is small.5) become the transverse tooth thickness split gear crack machinery that disappears.Can only eliminate the fixed increment part in the return difference.6) the assisting agency crack that disappears.This mode realizes that as auxiliary train or torque motor side method such as carry the part that needs to increase at double take considerable space by increasing supplementary equipment, increases cost and inapplicable high pulling torque transferring structure.

Summary of the invention

The purpose of this utility model provides a kind of pair of gear clearance elimination case apparatus, and the error of effectively eliminating lathe or mechanical drive shaft and being produced improves the transmission accuracy of Transmitted chains integral body, and the machining accuracy of component increases substantially.

The technological scheme that the utility model adopted is, a kind of pair of gear clearance elimination case apparatus, comprise actuating motor, actuating motor is connected with driving gear by motor shaft, and driving gear and driven gear and driven gear D are connected with a joggle successively, and driven gear is connected by clutch and gear A are coaxial, gear A and gear B are connected with a joggle, gear B is connected by coupling shaft and gear C are coaxial, and gear C and gearwheel are connected with a joggle, and gearwheel carries out transmission output by output shaft; Driven gear D is connected with gear F is coaxial by clutch E, and gear F and gear G are connected with a joggle, and gear G is connected with gear I is coaxial by coupling shaft H, and gear I and gearwheel are connected with a joggle, and gearwheel is connected with output shaft.

The utility model feature also is: the inner plate-shaped springs that adopts of clutch and clutch E.

The beneficial effects of the utility model are, the error of effectively eliminating lathe or mechanical drive shaft and being produced improves the transmission accuracy of Transmitted chains integral body, and machining accuracy is greatly improved; And be not subjected to the restriction of torque, easy to use, cost significantly reduces.

Description of drawings

Fig. 1 is the structural representation of the utility model device.

Among the figure, 1. actuating motor, 2. driving gear, 3. driven gear, 4. clutch, 5. gear A, 6. gear B, 7. coupling shaft, 8. gear C, 9. gearwheel, 10. output shaft, 11. driven gear D, 12. clutch E, 13. gear F, 14. gear G, 15. coupling shaft H, 16. gear I.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is elaborated.

As Fig. 1, the structure of the utility model device is: the actuating motor 1 as power intake is connected with driving gear 2 by motor shaft, driving gear 2 is connected with a joggle successively with driven gear 3 and driven gear D11, driven gear 3 is by

clutch

4 and 5 coaxial connections of gear A, gear A 5 is connected with a joggle with gear B 6, gear B 6 is by

coupling shaft

7 and 8 coaxial connections of gear C, and gear C 8 is connected with a joggle with gearwheel 9, and gearwheel 9 carries out transmission output by output shaft; Driven gear D11 is connected with gear F13 is coaxial by clutch E12, gear F 13 and gear G14 are connected with a joggle, and gear G14 is connected with gear I16 is coaxial by coupling shaft H15, and gear I16 and gearwheel 9 are connected with a joggle, gearwheel 9 is connected with output shaft 10, is used for the final output of power.

The utility model device adopts the identical Transmitted chains of two covers, the input small gear of two switched in opposite of driven by servomotor, these two gears lay respectively on the input shaft of two clutches, each clutch links to each other with a cover small gear system, and this two cover system finally all outputs on the gearwheel of X-axis.During use, if when clutch is communicated with, another throw-out-of clutch, what link to each other with it begins to drive the X-axis gearwheel once overlapping train, begins to carry out forward rotation.Meanwhile, the gearwheel of X-axis is the towing astern second cover train again, and when the clutch in this cover train was connected, the throw-out-of clutch in the first cover train also began to produce reverse direction actuation.Like this, no matter which cover train drives, another set of train always imposes on another gear with the frictional force on gear and the bearing, this frictional force has been passed through detailed calculating demonstration in this device, damping torque that is produced and the gearing back clearance that produces in service offsets, and reaches the purpose in the crack that disappears.

Clutch is the connector that a kind of torsion with driving side sends slave end to, can freely connect as required or cut off.Use clutch as the main body in the gap-eliminating structure based on following consideration: 1) stable performance, quality homogeneous.Clutch is inner, and to adopt plate-shaped springs be special rolling-mill section, though and have prestressing force to use through long-term tens million of times ON-OFF action, elastic force can not change.2) the acting characteristic spy is excellent.Pay attention to the particular design of performance, can bring into play special excellent responsiveness.3) life-span is long.Use the spacer block of height antifriction consumption, the abrasion of contact electricity face are minimum.4) no backlash.Since use plate-shaped springs, though there have strong vibration also can not produce to be loosening, patience the best.5) running is quiet.6) type selecting is easy.The design of multiple model meets economic and practical principle, and type selecting is convenient.7) installation direction is unrestricted, and horizontal or vertical installation all can.8) simple structure does not take up space, the exquisite loading mechanism easily of little shape.

Device of the present utility model has effectively been eliminated the error that lathe or mechanical drive shaft produced, and improves the transmission accuracy of Transmitted chains integral body, and the precision of processed component is greatly improved; And be not subjected to the restriction of torque, interior with equipment spare product technology maturation, easy to use, cost significantly reduces.

Claims

1. two gear clearance elimination case apparatus, it is characterized in that: comprise actuating motor (1), actuating motor (1) is connected with driving gear (2) by motor shaft, driving gear (2) and driven gear (3) and driven gear D(11) be connected with a joggle successively, driven gear (3) is by clutch (4) and coaxial connection of gear A (5), gear A (5) is connected with a joggle with gear B (6), gear B (6) is by coupling shaft (7) and coaxial connection of gear C (8), gear C (8) is connected with a joggle with gearwheel (9), and gearwheel (9) carries out transmission output by output shaft; Driven gear D(11) by clutch E(12) with gear F(13) the coaxial connection, gear F(13) with gear G(14) be connected with a joggle, gear G(14) by coupling shaft H(15) with gear I(16) the coaxial connection, gear I(16) be connected with a joggle with gearwheel (9), gearwheel (9) is connected with output shaft (10).

2. according to claim 1 pair of gear clearance elimination case apparatus is characterized in that: described clutch (4) and clutch E(12) the inner plate-shaped springs that adopts.