CN102825335B - Transmission case for automatically removing backlash and cutting - Google Patents
Transmission case for automatically removing backlash and cutting Download PDFInfo
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- CN102825335B CN102825335B CN201210336904.2A CN201210336904A CN102825335B CN 102825335 B CN102825335 B CN 102825335B CN 201210336904 A CN201210336904 A CN 201210336904A CN 102825335 B CN102825335 B CN 102825335B
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Abstract
The invention discloses a transmission case for automatically removing a backlash and cutting, which comprises a housing, wherein an input shaft and an output shaft are arranged in parallel inside the housing; the shaft end of the output shaft extends out of the housing and is provided with a saw blade clamp; one end of the input shaft extends out of the housing and is provided with a power input component; the input shaft and the output shaft are in transmission connection via a gear set; a damping shaft is also arranged inside the housing; a damping gear is arranged on the damping shaft; the damping gear is meshed with an output gear arranged on the output shaft, and a pneumatic damper is arranged at the shaft end of the damping shaft. Due to the pneumatic damper, the rotation of the output shaft is properly limited by the damping shaft and the damping gear; a gear gap generated when a work-piece is cut is removed; bounce of the output gear is stopped; the cutting noise is reduced; the cutting precision is improved; the abrasion of the gear is reduced; the cutting is more stable; a notch is smooth, and the device can be applied to various cutting machines and also can be applied to a polishing machine.
Description
Technical field
The present invention relates to a kind of gearbox, particularly a kind of gearbox for cutting machine.
Background technology
In prior art, have a kind of gearbox of cutting machine to have a variety of version, it mainly includes power shaft and output shaft, and the axle head of output shaft is provided with blade clamp, for clamping saw blade, between power shaft and output shaft, through some gear drives, connects.During work, power is inputted from power shaft, through gear drive driver output axle, rotates, and drives saw blade to rotate, and realizes cutting.Its weak point is: this class gearbox of the prior art, and gear, in installation process, certainly exists certain gap, when being subject to the reaction force of workpiece, gear is all the time in interlocking pattern, and two but can bounce, it is the effect that gear is subject to reaction force, depart from engagement, and moment again mesh, produce collision, not only make a noise, also can cause tooth surface abrasion aggravation, the otch out-of-flatness of the workpiece cutting, cutting accuracy is poor.
Summary of the invention
The object of this invention is to provide a kind of automatic anti-backlash cutting gearbox, can eliminate the gap between gearbox internal gear, improve cutting accuracy and cut quality.
The object of the present invention is achieved like this: a kind of automatic anti-backlash cutting gearbox, comprise housing, in housing, be arranged with power shaft and output shaft in parallel, the axle head of described output shaft stretches out outside housing and blade clamp is installed, one end of power shaft is stretched out outside housing and is provided with power input part, between power shaft and output shaft, through gear train, be in transmission connection, in housing, be also provided with damping shaft, damping shaft is provided with damping gear, damping gear is meshed with the output gear arranging on output shaft, and the axle head of damping shaft is provided with air damper.
The present invention is by air damper, and through damping shaft, damping gear appropriateness restriction output shaft rotation, when power shaft input power, under damping gear restriction, each gear in gear train remains engagement, and the gap between gear is eliminated.During cut workpiece, produce reaction force, this reaction force acts on damping gear through output shaft, output gear, and is finally air damper institute balance.Compared with prior art, beneficial effect of the present invention is: gear clearance when this device has been eliminated cut workpiece, meanwhile, can stop the knock-on of output gear, reduce cutting noise, improved cutting accuracy, reduced the wearing and tearing of gear, made cutting more steady, otch is smooth, this device can be used for, on various cutting machines, also can be used on sanding machine.
For making whole apparatus structure compact, easy for installation, described gear train comprises driving gear, the second gear, the 3rd gear, the 4th gear, the 5th gear and output gear, driving gear is arranged on power shaft, driving gear is meshed with the second gear, and the 3rd gear is meshed with the 4th gear, and the 5th gear and output gear are meshed, described the 3rd gear and the second gear coaxially arrange, and the 4th gear and the 5th gear coaxially arrange.This drive mechanism is arranged simply, decelerability is good.
As a further improvement on the present invention, described air damper comprises the equally distributed some cylinders of circumferencial direction along damping shaft axis, in cylinder, be provided with piston, piston is connected rotationally with piston rod, the outer ring of piston rod and bearing fixes, the inner ring of bearing is arranged on the axle head of damping shaft, eccentric setting between described damping shaft axle head and the axis of damping shaft, and each cylinder is connected with compressed air source through choke valve.By choke valve, to the air that injects certain pressure in each cylinder, when damping shaft is output gear driven and rotates, the axle head of the eccentric setting of damping shaft promotes piston reciprocates one by one, and compressed air produces damping action to piston.When cutting machine cuts in the slow-speed of revolution, the reaction force of generation is little, and when high rotating speed cutting, the reaction force of generation is large; The effect of choke valve is to guarantee that the damping force of generation is little when the slow-speed of revolution is rotated, and when high rotational speed, the damping force producing is large, and rotary speed property lucky and cutting machine matches, and can change damping force according to rotation speed change, in cutting process, eliminate to greatest extent backlash, avoid knock-on.By changing compressed-air actuated air pressure, also can change damping force.It is easy to adjust.
Above-mentioned power input part is belt wheel, can be also other drive disk assemblies such as synchronous pulley or gear.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is that Fig. 1 removes the top view after the 4th gear, the 5th gear.
Fig. 3 is that Fig. 1 removes the top view after damping gear, air damper.
Fig. 4 is air damper structural representation.
Wherein, 1 the 5th gear, 2 the 4th gears, 3 housings, 4 output gears, 5 damping gears, 6 pistons, 7 second gears, 8 driving gears, 9 the 3rd gears, 10 belt wheels, 11 air dampers, 12 blade clamp, 13 damping shafts, 14 power shafts, 15 output shafts, 16 choke valves, 17 cylinders, 18 bearings, 19 piston rods.
The specific embodiment
As Figure 1-4, for automatic anti-backlash cutting gearbox, comprise housing 3, in housing 3, be arranged with power shaft 14 and output shaft 15 in parallel, the axle head of described output shaft 15 stretches out outside housing 3 and blade clamp 12 is installed, one end of power shaft 14 is stretched out outside housing 3 and is provided with belt wheel 10 as power input part, between power shaft 14 and output shaft 15, through gear train, be in transmission connection, in housing 3, be also provided with damping shaft 13, damping shaft 13 is provided with damping gear 5, damping gear 5 is meshed with the output gear 4 arranging on output shaft 15, the axle head of damping shaft 13 is provided with air damper 11.
Gear train comprises driving gear 8, the second gear 7, the 3rd gear 9, the 4th gear 2, the 5th gear 1 and output gear 4, driving gear 8 is arranged on power shaft 14, driving gear 8 is meshed with the second gear 7, the 3rd gear 9 is meshed with the 4th gear 2, the 5th gear 1 and output gear 4 are meshed, described the 3rd gear 9 and the second gear 7 coaxially arrange, and the 4th gear 2 and the 5th gear 1 coaxially arrange.
Air damper 11 comprises the equally distributed some cylinders 17 of circumferencial direction along damping shaft 13 axis, in cylinder 17, be provided with piston 6, piston 6 is connected rotationally with piston rod 19, piston rod 19 fixes with the outer ring of bearing 18, the inner ring of bearing 18 is arranged on the axle head of damping shaft 13, eccentric setting between described damping shaft 13 axle heads and the axis of damping shaft 13, each cylinder 17 is connected with compressed air source through choke valve 16.
During this device work, when output shaft slow rotation, damping shaft is slow rotation also, and during reciprocating motion of the pistons, choke valve can comparatively fast be led away the gas of the more high pressure producing in cylinder, and damping force is relatively little; When output shaft quick rotation, damping shaft is quick rotation also, and during reciprocating motion of the pistons, choke valve can not be led away the gas of the more high pressure producing in cylinder in time, makes the pressure in cylinder higher, produces larger damping force.This device, by changing compressed-air actuated bleed pressure, also can change the size of damping force, in addition, by changing the aperture of choke valve, also can change the size of damping force, it adjusts flexible, can change corresponding damping force according to workpiece size, material, make cutting more steadily, otch is more smooth.
The present invention is not limited to above-described embodiment; on the basis of technical scheme disclosed by the invention; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection scope of the present invention.For example choke valve can be throttle orifice.
Claims (3)
1. an automatic anti-backlash cuts gearbox, comprise housing, in housing, be arranged with power shaft and output shaft in parallel, the axle head of described output shaft stretches out outside housing and blade clamp is installed, one end of power shaft is stretched out outside housing and is provided with power input part, between power shaft and output shaft, through gear train, be in transmission connection, it is characterized in that: in housing, be also provided with damping shaft, damping shaft is provided with damping gear, damping gear is meshed with the output gear arranging on output shaft, and the axle head of damping shaft is provided with air damper; Described air damper comprises the equally distributed some cylinders of circumferencial direction along damping shaft axis, in cylinder, be provided with piston, piston is connected rotationally with piston rod, the outer ring of piston rod and bearing fixes, the inner ring of bearing is arranged on the axle head of damping shaft, eccentric setting between described damping shaft axle head and the axis of damping shaft, each cylinder is connected with compressed air source through choke valve.
2. automatic anti-backlash according to claim 1 cuts gearbox, it is characterized in that: described gear train comprises driving gear, the second gear, the 3rd gear, the 4th gear, the 5th gear and output gear, driving gear is arranged on power shaft, driving gear is meshed with the second gear, the 3rd gear is meshed with the 4th gear, the 5th gear and output gear are meshed, and described the 3rd gear and the second gear coaxially arrange, and the 4th gear and the 5th gear coaxially arrange.
3. automatic anti-backlash cutting gearbox according to claim 1 and 2, is characterized in that: described power input part is belt wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210336904.2A CN102825335B (en) | 2012-09-13 | 2012-09-13 | Transmission case for automatically removing backlash and cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210336904.2A CN102825335B (en) | 2012-09-13 | 2012-09-13 | Transmission case for automatically removing backlash and cutting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102825335A CN102825335A (en) | 2012-12-19 |
| CN102825335B true CN102825335B (en) | 2014-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210336904.2A Active CN102825335B (en) | 2012-09-13 | 2012-09-13 | Transmission case for automatically removing backlash and cutting |
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| Country | Link |
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| CN (1) | CN102825335B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603945A (en) * | 2013-11-28 | 2014-02-26 | 东莞市晋诚机械有限公司 | Sawing gearbox |
| CN108036049A (en) * | 2017-11-06 | 2018-05-15 | 武汉航空仪表有限责任公司 | A kind of eccentric damper for eliminating gear clearance |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2191131A (en) * | 1938-11-30 | 1940-02-20 | Cincinnati Milling Machine Co | Backlash eliminator |
| GB1135512A (en) * | 1966-07-21 | 1968-12-04 | Jack Binns | Anti-backlash carriage feed mechanism |
| DE1427264B1 (en) * | 1961-06-26 | 1970-05-14 | Gleason Works | Device for setting a predetermined backlash between two gears meshing with one another as work pieces or as work piece and tool |
| DE3901076A1 (en) * | 1988-01-28 | 1989-08-03 | Volkswagen Ag | Device for eliminating backlash |
| CN1410842A (en) * | 2001-10-10 | 2003-04-16 | 佳能株式会社 | Picture forming apparatus and driver of picture forming mechanism thereof |
| CN2682249Y (en) * | 2004-03-02 | 2005-03-02 | 和和机械股份有限公司 | Gear backlash elimination apparatus of speed-shifting mechanism |
| CN201651171U (en) * | 2010-03-08 | 2010-11-24 | 张家港市聚翔机械有限公司 | Gear drive device |
| CN101975253A (en) * | 2010-11-25 | 2011-02-16 | 西安福斯特动力科技有限公司 | Double-gear anti-backlash box device |
| CN202082377U (en) * | 2011-05-20 | 2011-12-21 | 浙江锯力煌锯床股份有限公司 | Brake damping gap-removing device of speed reducer |
| CN202780031U (en) * | 2012-09-13 | 2013-03-13 | 江苏省南扬机械制造有限公司 | Cutting gearbox capable of automatically eliminating backlash |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10226850B3 (en) * | 2002-06-15 | 2004-01-22 | Motorenfabrik Hatz Gmbh & Co Kg | Gear drive with automatic compensation of a backlash |
| CN101258309B (en) * | 2005-06-27 | 2011-12-07 | 金属达因Bsm有限责任公司 | Gear-driven balance shaft apparatus with backlash control |
-
2012
- 2012-09-13 CN CN201210336904.2A patent/CN102825335B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2191131A (en) * | 1938-11-30 | 1940-02-20 | Cincinnati Milling Machine Co | Backlash eliminator |
| DE1427264B1 (en) * | 1961-06-26 | 1970-05-14 | Gleason Works | Device for setting a predetermined backlash between two gears meshing with one another as work pieces or as work piece and tool |
| GB1135512A (en) * | 1966-07-21 | 1968-12-04 | Jack Binns | Anti-backlash carriage feed mechanism |
| DE3901076A1 (en) * | 1988-01-28 | 1989-08-03 | Volkswagen Ag | Device for eliminating backlash |
| CN1410842A (en) * | 2001-10-10 | 2003-04-16 | 佳能株式会社 | Picture forming apparatus and driver of picture forming mechanism thereof |
| CN2682249Y (en) * | 2004-03-02 | 2005-03-02 | 和和机械股份有限公司 | Gear backlash elimination apparatus of speed-shifting mechanism |
| CN201651171U (en) * | 2010-03-08 | 2010-11-24 | 张家港市聚翔机械有限公司 | Gear drive device |
| CN101975253A (en) * | 2010-11-25 | 2011-02-16 | 西安福斯特动力科技有限公司 | Double-gear anti-backlash box device |
| CN202082377U (en) * | 2011-05-20 | 2011-12-21 | 浙江锯力煌锯床股份有限公司 | Brake damping gap-removing device of speed reducer |
| CN202780031U (en) * | 2012-09-13 | 2013-03-13 | 江苏省南扬机械制造有限公司 | Cutting gearbox capable of automatically eliminating backlash |
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| Publication number | Publication date |
|---|---|
| CN102825335A (en) | 2012-12-19 |
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