CN102528486B - Tooling for processing inner hole key slot of bevel wheel - Google Patents
Tooling for processing inner hole key slot of bevel wheel Download PDFInfo
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- CN102528486B CN102528486B CN201210025525.1A CN201210025525A CN102528486B CN 102528486 B CN102528486 B CN 102528486B CN 201210025525 A CN201210025525 A CN 201210025525A CN 102528486 B CN102528486 B CN 102528486B
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- alignment pin
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- driving gear
- driven gear
- hold down
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Abstract
The invention discloses a tooling for processing an inner hole key slot of a bevel wheel; the upper surface of a bottom plate is provided with a groove; the groove is internally provided with a driving gear locating pin and a driven gear locating pin which are arranged at an interval; the upper surface of the bottom plate is provided with a driving gear axial compression device and a driven gear axial compression device; the driving gear axial compression device is arranged around the driving gear locating pin; the driven gear axial compression device is arranged around the driven gear locating pin; and the upper surface of the bottom plate is also provided with a locating device which is inserted into a gear groove. The tooling can be used for locating and clamping a bevel gear to be processed, so that the requirement for the processing accuracy of the position where the center of the inner hole key slot of the bevel wheel is opposite to the center of the corresponding gear can be guaranteed.
Description
Technical field
The present invention relates to inner hole key slot of bevel wheel processing technique field, the frock of particularly a kind of inner hole key slot of bevel wheel processing.
Background technology
At machine industry, gear is a high-precision product, particularly some hard gears all will reach it designed toothform precision requirement by high-precision numerically controlled tooth grinding machine.Especially some helical gears, not only profile of tooth has quite high required precision, and in endoporus, key slot center also has very high position accuracy demand to profile of tooth.Such as my company is that the left and right of a pair Z=47, Mn=8, α=20 ° on the scrap cutter machine equipment that makes of an enterprise revolves helical gear, as Fig. 1, helical gear 1 is fixed by key block and cutter shaft 2 circumference, cutterhead 3 is fixed by key block and cutter shaft 2 circumference, by key block connected mode, cutter shaft keyway positional precision and helical gear, tool rest keyway positional precision determine same cutter shaft upper knife groove and profile of tooth relative-position error, are formed the cutter gap of its upper and lower tool rest by the engagement of gear pair.
On above-mentioned scrap cutter machine equipment, one is had: the gear teeth centerline deviation that key slot center line is corresponding with on datum level≤± 0.02mm, has one in driven gear technical requirement: the tooth space centerline deviation that key slot center line is corresponding with on datum level≤± 0.02mm in driving gear technical requirement.Common (as bilateral scissors, flying shear, scrap cutter etc.) at the gear of the of this sort requirement of our company, but can meet the requirements of seldom by existing processing mode, existing processing mode makes the center deviation difference of the gear teeth and keyway all be greater than 0.25, is finally solved by technical staff's agreed formula by actual measurement departure when assembling.Once when bilateral scissors equipment processes similar gear under the guidance of C-MARK expert, keyway is first processed to finished product after profile of tooth half fine grinding, numerically controlled tooth grinding machine semi-finishing grinding tooth shape again, measure side-play amount by three-dimensional coordinate instrument, then by numerically controlled tooth grinding machine correction grinding side-play amount.Repeated multiple times upper and lower numerically controlled tooth grinding machine like this is finally machined to finished product and reaches pattern requirement.Adopt in this way that not only cost of manufacture is high, and the cycle is long, general Gear Processing factory is difficult to satisfied such making requirement.
Summary of the invention
For above-mentioned technical problem, the object of the present invention is to provide the frock that a kind of inner hole key slot of bevel wheel is processed, by frock of the present invention processed helical gear positioned and clamp, the requirement on machining accuracy of gear inner hole key slot center and corresponding gear teeth center relative position can be ensured.
The technical scheme realizing the object of the invention is as follows:
The frock of inner hole key slot of bevel wheel processing, the upper surface of base plate is provided with groove, in groove, compartment of terrain arranges driving gear alignment pin and driven gear alignment pin, the upper surface of base plate is provided with the axial hold down gag of driving gear and the axial hold down gag of driven gear, the axial hold down gag of driving gear is centered around around driving gear alignment pin, the axial hold down gag of driven gear is centered around around driven gear alignment pin, the upper surface of base plate is also provided with the positioner be inserted in gear tooth slot.
Have employed such scheme, in groove, compartment of terrain arranges driving gear alignment pin and driven gear alignment pin, driving gear and the Y-direction free degree of driven gear on base plate (gear is radial) can be limited, and the center of driving gear and driven gear is overlapped with the center line of groove.The upper surface of base plate is provided with the axial hold down gag of driving gear and the axial hold down gag of driven gear, and the free degree of driving gear and driven gear Z-direction (gear shaft to) on base plate can be made to be limited.The upper surface of base plate is also provided with the positioner be inserted in gear tooth slot, by positioner can to helical gear along base plate X to the free degree limit.
In sum, first, the present invention utilizes the groove of base plate, prismatic pin and ball detent fit, the locate mode of forming surface, point and line, solves helical gear and cannot use face at flank of tooth position, put and the difficult problem of point location.Secondly, frock of the present invention makes driving gear and driven gear with engagement locate mode, can eliminate some uncertain factors in design, processing, assembling process, the precision after making the relative position of gear pair keyway more can meet assembling.
The gear processed by frock of the present invention testing result on three-dimensional coordinate instrument, two key slot center lines are respectively driving gear with the corresponding gear teeth disalignment on datum level: 0.01625mm; 0.0127mm, driven gear: 0.03795mm, 0.03755mm.
From the value detected, driving gear and prior art are greater than compared with 0.25 value without frock mismachining tolerance and have greatly improved, and have surmounted the technical requirement of 0.02mm in driving gear.Although result and technical requirement that driven gear detects have certain error, to be greater than compared with 0.25 value without frock mismachining tolerance with prior art and to have greatly improved, separately because driven gear location is engagement location, this precision can meet the required precision after assembling.
Accompanying drawing explanation
Fig. 1 is the cutter shaft of scrap cutter machine equipment and the installation diagram of gear in prior art;
Fig. 2 is the three-dimensional structure diagram of frock of the present invention;
Fig. 3 is the axonometric drawing of invention frock bottom surface;
Fig. 4 is the profile of one embodiment of the present invention;
Fig. 5 is the profile of another embodiment of the present invention;
In accompanying drawing, 1 is helical gear, and 2 is cutter shaft, and 3 is cutterhead;
10 is base plate, and 11 is groove, and 12 is driving gear alignment pin, and 13 is driven gear alignment pin, and 14 is pressing plate, 141 is hole, and 15 is support column, and 16 is stud, and 17 is nut, and 18 is ball alignment pin, 19 is eccentric bushing, and 20 is liner plate, and 21 is driving gear, and 22 is driven gear.
Detailed description of the invention
With reference to Fig. 2 to Fig. 5, the frock of inner hole key slot of bevel wheel processing of the present invention, the upper surface of base plate 10 is provided with groove 11, and this groove 11 has run through upper surface and the lower surface of base plate 10, and groove 11 is rectangular channel.
In groove 11, compartment of terrain arranges driving gear alignment pin 12 and driven gear alignment pin 13, in clamping process, the latter half of driving gear alignment pin 12 be inserted in groove 11, and the first half of driving gear alignment pin 12 is inserted in helical gear axis hole.The assembling of driven gear alignment pin 13 is also like this.By driving gear alignment pin 12 and driven gear alignment pin 13, driving gear and the Y-direction free degree of driven gear on base plate (gear is radial) can be limited, and the center of driving gear and driven gear is overlapped with the center line of groove 11.Driving gear alignment pin 12 and driven gear alignment pin 13 are prismatic pin and/or straight pin, the preferred prismatic pin of the present invention, prismatic pin has lightweight advantage, assembles and dismantles all more convenient, and the two ends of prismatic pin have certain tapering, be more convenient to play positioning action.
The upper surface of base plate 10 is provided with the axial hold down gag of driving gear and the axial hold down gag of driven gear, by the axial hold down gag of driving gear and the axial hold down gag of driven gear, the free degree of driving gear and driven gear Z-direction (gear shaft to) on base plate can be made to be limited.The axial hold down gag of driving gear is centered around driving gear alignment pin 12 around, and the axial hold down gag of driven gear is centered around driven gear alignment pin 13 around.The axial hold down gag of driving gear and the axial hold down gag of driven gear include three hold down gags, three hold down gags are arranged in the circumferentially same of base plate 10 upper surface equably, be convenient to make driving gear alignment pin 12 be positioned at the center of the axial hold down gag of driving gear, driven gear alignment pin 13 is positioned at the center of the axial hold down gag of driven gear.Each hold down gag comprises pressing plate 14, support column 15 and device for exerting.One end of pressing plate 14 is supported on the upper end of support column 15, and the lower end of support column 15 is supported on the upper surface of base plate 10, and one end of device for exerting is connected with base plate through behind the hole 141 that pressing plate 14 is arranged.Hole 141 on pressing plate is mounting hole, so that the length of adjustment pressing plate 14 one end on helical gear axial end.Device for exerting comprises stud 16 and nut 17, and nut 17 is connected with one end of stud 16, and the other end of stud 16 is connected with base thread.
The structure of the device for exerting of the axial hold down gag of driving gear and the axial hold down gag of driven gear is also not limited to above-mentioned embodiment, such as can also be made up of supporting seat, pressing plate and screw, supporting seat is fixed on base plate, pressing plate is rotatably connected on supporting seat by pin, screw is connected on pressing plate, and supporting seat is provided with the screw for coordinating with screw thread.
The upper surface of base plate 10 is also provided with the positioner be inserted in gear tooth slot, by positioner can to helical gear along base plate X to the free degree limit.In the present invention, positioner can be separately ball alignment pin 18, the mode that this positioner is located with pin-and-hole on ball location pin handle and base plate is fixed on base plate, can not adjust, can only carry out spacing for a kind of gear of size individually, its positioning precision can not be very accurate as processed without high precision apparatus.Therefore, positioner also can be made up of eccentric bushing 19 and ball alignment pin 18, eccentric bushing 19 loads in the axis hole that base plate is arranged, ball alignment pin 18 is fixed in eccentric bushing 19, the positioner of this form can adjust, i.e. rotating eccentric sleeve 19, thus the ball alignment pin 18 being positioned at eccentric bushing 19 end also rotates thereupon, because ball alignment pin 18 is not or not the center, end of eccentric bushing 19, therefore, ball alignment pin 18 is not carry out gyration with the center of eccentric bushing 19, thus the position of ball alignment pin 18 is changed, with improve to helical gear along X to the positioning precision of the free degree.Diameter d=the 1.476m of ball alignment pin, wherein m is module.Adopt the ball alignment pin of this diameter, its contact point is in teeth groove constant chord, and it is centrally located on helical gear reference circle.
The positioner of above-mentioned two kinds of embodiments is basic only for the gear of same size, if the size of gear changes, then the present invention is also solved by following scheme:
In the groove 11 of base plate 10, be embedded liner plate 20, the shape of liner plate 20 is identical with the shape of groove 11, by changing liner plate 20 thickness, makes the equal diameters of width dimensions and processed helical gear endoporus between liner plate.After setting up liner plate 20, positioner must be that namely positioner is made up of eccentric bushing 19 and ball alignment pin 18, and eccentric bushing 19 loads in the axis hole that base plate is arranged, and ball alignment pin 18 is fixed in eccentric bushing 19 with the version that can regulate composition.After helical gear hole size changes, by the adjustment of liner plate 20 and positioner, use the present invention can carry out clamping equally, and the frock that need not more renew, therefore liner plate 20 and eccentric bushing 19 can meet the gear in certain limit size, make frock have versatility by adjustment liner plate and eccentric bushing, be beneficial to the manufacturing cost of saving frock.
Use frock process of the present invention as follows:
First confirm that helical gear left or right revolves direction, selects left or right ball dowel hole, mounting and positioning device.Prismatic pin is loaded in the groove 11 of driving gear 21 axis hole and base plate 10, the Y-direction (radial direction) of driving gear is limited.Driving gear 21 carries out traversing with prismatic pin in groove 11, makes corresponding teeth groove and the tight note of ball alignment pin 18, limits the X of driving gear to (horizontal direction).Now located by prismatic pin, ball alignment pin 18, base plate plane and groove and driving gear endoporus and teeth groove and its six-freedom degree is limited, then make it axially fasten with the axial hold down gag of driving gear.Same by driven gear 22 prismatic column finger setting, and make driven gear and driving gear be engagement, utilize the axial hold down gag of driven gear to make it fastening.This engagement locate mode considers that gear pair is in running order carries out processing keyway, can eliminate some uncertain factors in design, processing, assembling process, precision when making the relative position of gear pair keyway more can meet work.
Claims (7)
1. the frock of an inner hole key slot of bevel wheel processing, it is characterized in that: the upper surface of base plate is provided with groove, in groove, compartment of terrain arranges driving gear alignment pin and driven gear alignment pin, the upper surface of base plate is provided with the axial hold down gag of driving gear and the axial hold down gag of driven gear, the axial hold down gag of driving gear is centered around around driving gear alignment pin, the axial hold down gag of driven gear is centered around around driven gear alignment pin, the upper surface of base plate is also provided with the positioner be inserted in gear tooth slot, liner plate is provided with in described groove, described positioner is made up of eccentric bushing and ball alignment pin, eccentric bushing loads in the axis hole that base plate is arranged, ball alignment pin is fixed in eccentric bushing.
2. the frock of inner hole key slot of bevel wheel processing according to claim 1, it is characterized in that: the diameter d=1.476m of described ball alignment pin, wherein m is module.
3. the frock of inner hole key slot of bevel wheel processing according to claim 1, is characterized in that: described driving gear alignment pin and driven gear alignment pin are prismatic pin.
4. the frock of inner hole key slot of bevel wheel processing according to claim 1, is characterized in that: described driving gear alignment pin and driven gear alignment pin are straight pin.
5. the frock of inner hole key slot of bevel wheel processing according to claim 1, it is characterized in that: the axial hold down gag of described driving gear and the axial hold down gag of driven gear include three hold down gags, each hold down gag comprises pressing plate, support column and device for exerting, one end of pressing plate is supported on the upper end of support column, the lower end of support column is supported on the upper surface of base plate, and one end of device for exerting connects through the Kong Houyu base plate that pressing plate is arranged.
6. the frock of inner hole key slot of bevel wheel processing according to claim 5, is characterized in that: the hole on described pressing plate is mounting hole.
7. the frock of inner hole key slot of bevel wheel processing according to claim 5, it is characterized in that: described device for exerting comprises stud and nut, nut is connected with one end of stud, and the other end of stud is connected with base thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210025525.1A CN102528486B (en) | 2012-02-07 | 2012-02-07 | Tooling for processing inner hole key slot of bevel wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210025525.1A CN102528486B (en) | 2012-02-07 | 2012-02-07 | Tooling for processing inner hole key slot of bevel wheel |
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| Publication Number | Publication Date |
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| CN102528486A CN102528486A (en) | 2012-07-04 |
| CN102528486B true CN102528486B (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210025525.1A Active CN102528486B (en) | 2012-02-07 | 2012-02-07 | Tooling for processing inner hole key slot of bevel wheel |
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| CN102848231B (en) * | 2012-08-31 | 2015-08-05 | 深圳市大富科技股份有限公司 | The method of jig and clamping workpiece |
| CN103692232A (en) * | 2013-11-29 | 2014-04-02 | 成都斯锐特钨钢刀具有限公司 | Holding device for circular cutters |
| CN103894861B (en) * | 2014-03-11 | 2016-05-25 | 中冶陕压重工设备有限公司 | Alignment device and method during for the strict phase position key slot of machining gears endoporus |
| CN104772638A (en) * | 2015-05-05 | 2015-07-15 | 江苏亚美特齿轮有限公司 | Universal gear ring chamfering tool |
| CN104816177A (en) * | 2015-05-05 | 2015-08-05 | 江苏亚美特齿轮有限公司 | Special clamp for gear ring tooth germ cutting |
| CN105171473A (en) * | 2015-09-30 | 2015-12-23 | 河南飞龙(芜湖)汽车零部件有限公司 | Clamp for machining of dish-cover type parts |
| CN105881053A (en) * | 2016-06-01 | 2016-08-24 | 重庆市星极齿轮有限责任公司 | Fast fixing device for gears |
| CN107639309A (en) * | 2017-10-31 | 2018-01-30 | 河南柴油机重工有限责任公司 | A kind of centering helical gear flank of tooth teeth groove center positioning tool and processing method |
| CN109483301A (en) * | 2018-12-16 | 2019-03-19 | 广东星联精密机械有限公司 | A kind of five axis three-jaw positioning tools |
| CN109570638B (en) * | 2018-12-29 | 2020-03-24 | 綦江齿轮传动有限公司 | Hobbing method for counter-teeth of spiral teeth of intermediate shaft |
| CN110497146B (en) * | 2019-07-22 | 2020-11-06 | 西安交通大学 | Claw type pump rotor tool and claw type pump rotor installation process |
| CN110369773B (en) * | 2019-07-30 | 2020-10-16 | 河南工程学院 | Method for accurately controlling central symmetry degree of inner hole key groove and tooth part or tooth groove of helical gear |
| CN112872743B (en) * | 2021-01-13 | 2022-09-20 | 重庆齿轮箱有限责任公司 | Machining method for combined herringbone gear and single bevel gear with key groove in inner hole |
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| CN102275080A (en) * | 2011-07-19 | 2011-12-14 | 重庆市蓝黛实业有限公司 | Gear drilling clamp |
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| CN201493679U (en) * | 2009-07-30 | 2010-06-02 | 中冶陕压重工设备有限公司 | Processing device for high-precision phase position key slot |
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| US4852437A (en) * | 1988-06-29 | 1989-08-01 | The Cross Company | Method and apparatus for locating and clamping a workpiece, such as a piston, prior to rotating same in a machining operation |
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| CN102528486A (en) | 2012-07-04 |
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