CN104646974A - Tooth splicing machining method for machining herringbone gears - Google Patents
Tooth splicing machining method for machining herringbone gears Download PDFInfo
- Publication number
- CN104646974A CN104646974A CN201410853075.4A CN201410853075A CN104646974A CN 104646974 A CN104646974 A CN 104646974A CN 201410853075 A CN201410853075 A CN 201410853075A CN 104646974 A CN104646974 A CN 104646974A
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- Prior art keywords
- helical gear
- helical
- gear
- gears
- helical gears
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F7/00—Making herringbone gear teeth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
Abstract
The invention relates to a tooth splicing machining method for machining herringbone gears. The tooth splicing machining method comprises the following steps: firstly machining two paired helical gears according to an ordinary helical gear machining method; during the gear grinding process of the two paired helical gears after heat treatment, grinding so that the sizes of the common normal lines of the two helical gears are the same, and then engaging the two helical gears according to an engagement principle, so that the axis centers of the two helical gears are connected to form a long straight line, and two circles are formed by taking the respective axis centers of the two helical gears as centers; manufacturing a plug pin hole from two intersection points on one of the helical gears, calculating the other helical gear according to the formula that a is equal to 360/number of teeth/2 to obtain the calibration angles of two technological coordinate holes and the left and the right intersection points; manufacturing the left and the right technological coordinate holes in the helical gears; after the two helical gears are spliced, splicing the two gears by inserting positioning pins in the left and the right plug pin holes which are overlapped and the two technological coordinate holes; then linearly cutting internal keyways of the central axle holes of the two helical gears to manufacture the two paired helical gears.
Description
Technical field
The present invention relates to a kind of spelling tooth processing method for processing herringbone bear, belonging to Gear Manufacturing Technology field.
Background technology
Need the involute herringbone bear of spelling tooth as shown in Figure 1, it requires A gear and the B gear of two spelling teeth, and its teeth groove or transverse tooth thickness are aimed at mutually, and two gear tooth slot or transverse tooth thickness symmetry error should be less than 0.03mm; Prior art is processed the type gear and is generally adopted method as shown in Figure 2, and the processing method of its middle gear is:
1. before gear hobbing, gear is installed on dummy shaft; 2. one end profile of tooth has been rolled; 3. platform and v shape iron centering; 4. workpiece is unloaded and be put in centering on v shape iron; 5. tint in relevant surface; 6. on the gear cylinder face, one end of having rolled profile of tooth, mark reference point A, B, C, D, calculating mark symmetrical center line (in theory symmetrical plane); 7. parallel lines are marked toward the other end with A, B, C, D, each point for benchmark; 8. calculate and mark with A, B, C, D, symmetrical A, B, C, D and be connected A, B, C, D, etc. line segment, (as Fig. 1) 9. adjusts gear-hobbing machine; 10. to Workpiece clamping centering; 10. tool setting and trial cut cutter flower; @check cutter flower with rule and whether conform to; 10. formal Rolling-cut shear completes.This on platform, v shape iron centering be coated with line machining accuracy can ensure in error about 0.10, heat after roll flute cut the operations such as keyway.
The shortcoming that above-mentioned existing spelling tooth processing method mainly exists has:
One is the precision that the precision of dummy shaft directly affects gear;
Two is by keyway and location, the face of cylinder, usually can only reach the precision of about 0.05mm, product percent of pass < 50% after spelling tooth to tooth error degree of title;
Three need repeatedly tool setting when being roll flutes, and workbench needs to move frequently, and working (machining) efficiency is low;
Four is be not suitable for batch production;
Summary of the invention
The object of the invention is to overcome the deficiency that prior art exists, and provide a kind of can improve herringbone bear spell after tooth to tooth precision, improve the spelling tooth processing method for processing herringbone bear of working (machining) efficiency.
The object of the invention is to have come by following technical solution, a kind of spelling tooth processing method for processing herringbone bear, this spelling tooth processing method first processes the helical gear of two pairings according to common bevel wheel machining method, i.e. left-handed gear and dextrorotation gear, during the helical gears roll flute after heat treatment of described two pairings, two helical gear common normal sizes are worn into unanimously, then by the theory of engagement, by two helical gear engagements, two helical gear axle centers are made to be linked to be a long straight line, and two circles are formed centered by the respective axle central point of two helical gears, and described circle is each and long straight line intersection respectively forms two intersection points in left and right, two intersection points wherein on a helical gear make pin hole, another helical gear calculates the collimation angle of two intersection points in two technique coordinate holes and left and right according to the a=360/ number of teeth/2, this helical gear makes two technique coordinate holes, left and right, after by two helical gear splicings, overlapping two, left and right pin hole is plugged in and two gears are spelled teeth by two technique coordinate holes by alignment pin, then the internal keyway of Linear cut two helical gear central shaft holes, make the helical gear of two pairings.
Common bevel wheel machining method of the present invention comprises the steps:
A) skiving base;
B) gear hobbing after finishing teeth base;
C) six axially extending bores on chamfering bit tooth wall;
D) namely plain grinding after heat treatment is benchmark with small end face, plain grinding both ends of the surface;
E) roll flute, punching axle roll flute also requires that two helical gear common normal sizes are worn into unanimously;
On described helical gear, the making in two technique coordinate holes, left and right is: calculate a collimation angle according to the a=360/ number of teeth/2, another short lines is formed and the angle of this short lines and described long straight line intersection is described collimation angle centered by this helical gear shaft central point, by the short lines on this helical gear and describedly round-formedly have another two intersection points, respectively centered by these two intersection points make a technique coordinate hole; After by two helical gear splicings, two pin hole aimed at and technique coordinate holes about two helical gears spliced up and down are plugged on respectively by two alignment pins, after realizing two helical gear spelling teeth, synchronous cutting processing is carried out to the internal keyway of two helical gear central shaft holes.
The present invention can improve exponentially and spells the precision after tooth, and practical effect shows, can make double helical tooth to tooth control errors at 0.02 ~ 0.03mm, product percent of pass >=97%.This process means is easy to use, and the comparable prior art of actual working (machining) efficiency improves about 40%, and economic benefit is very remarkable.
Accompanying drawing explanation
Fig. 1 is the structural representation to tooth duplicate gear.
Fig. 2 is the machining sketch chart of existing duplicate gear.
Fig. 3 is duplicate gear of the present invention engagement machining sketch chart.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be described in detail: a kind of spelling tooth processing method for processing herringbone bear of the present invention, this spelling tooth processing method first processes the helical gear of two pairings according to common bevel wheel machining method, the i.e. duplicate gear of left-handed gear and dextrorotation gear formation, as shown in Figure 1, during the helical gears roll flute after heat treatment of described two pairings, two helical gear common normal sizes are worn into unanimously, then by the theory of engagement, by two helical gear engagements, as shown in Figure 3, make two helical gear A, the axle center of B is linked to be a long straight line 1, and with two helical gear A, two circles 2 are formed centered by B axle central point separately, and described circle 2 each crossing with long straight line 1 each formed about two intersection points, two intersection points wherein on a helical gear B make pin hole 3, another helical gear A calculates the collimation angle of two technique coordinate holes 4 and two intersection points 5 in left and right according to the a=360/ number of teeth/2, this helical gear A makes two technique coordinate holes 4, left and right, by two helical gear A, after B splicing, overlapping two, left and right pin hole 3 is plugged in and two gears are spelled teeth by two technique coordinate holes 4 by alignment pin, then Linear cut two helical gear A, the internal keyway of B central shaft hole, make the helical gear of two pairings.
Common bevel wheel machining method of the present invention comprises the steps:
A) skiving base;
B) gear hobbing after finishing teeth base;
C) six axially extending bores on chamfering bit tooth wall;
D) namely plain grinding after heat treatment is benchmark with small end face, plain grinding both ends of the surface;
E) roll flute, punching axle roll flute also requires that two helical gear common normal sizes are worn into unanimously;
On described helical gear A, the making in two technique coordinate holes 4, left and right is: calculate a collimation angle according to the a=360/ number of teeth/2, another short lines 6 is formed and this short lines 6 angle crossing with described long straight line 1 is described collimation angle centered by this helical gear A axle central point, another two intersection points 5 are formed with described circle 2, each making technique coordinate hole 4 centered by these two intersection points 5 by the short lines 6 on this helical gear A; After by two helical gear A, B splicings, the pin hole 3 and technique coordinate hole 4 that two helical gears about A, B two of splicing up and down aim at is plugged on respectively by two alignment pins, after realizing the spelling tooth of two helical gears A, B, synchronous cutting processing is carried out to the internal keyway of two helical gear A, B central shaft holes.
The present invention analyzes from the herringbone bear theory of engagement, research, two gear rotation directions are contrary, the equal common normal consistent size of helical angle, two gears itself can engage, two gears meshing are centre-to-centre spacing is A, then on jig bore, two gears are compressed (as Fig. 3) by centre-to-centre spacing A engagement, by the theory of engagement, if two gears meshing, be bound to two gear centre planes overlapping, therefore the number of teeth/2, α=360/, just 2 technique coordinates can be drawn after calculating, by two fabrication holes by tooth splicing (as Fig. 3), therefore to two gears before quenching, antiseepage is coated with to fabrication hole position, at this position processing technology alignment pin after heat, after two parts being spelled tooth by alignment pin, Linear cut inside groove, thus ensure the coincidence of gear two tooth central plane, to tooth control errors within 0.03,
Embodiment: to process certain model herringbone bear, gear parameter is: modulus M=5, tooth number Z=73, pressure angle α=20 °, helixangleβ=11 ° 30 ＇, the hand of spiral: each 1 of left-handed, dextrorotation, modification coefficient X=0.03, across 9 tooth base tangent lengths
in process, only should be noted that keyway wouldn't be processed, after heat during roll flute, two gear common normal sizes of pairing are worn into unanimously, all the other are all by common bevel wheel machining, then press preceding method mounting tool and processing after, within metric results shows that the spelling tooth symmetry of herringbone bear can reach 0.03mm.
Claims (2)
1. one kind for processing the spelling tooth processing method of herringbone bear, this spelling tooth processing method first processes the helical gear of two pairings according to common bevel wheel machining method, i.e. left-handed gear and dextrorotation gear, when it is characterized in that the helical gears roll flute after heat treatment of described two pairings, two helical gear common normal sizes are worn into unanimously, then by the theory of engagement, by two helical gear engagements, two helical gear axle centers are made to be linked to be a long straight line, and two circles are formed centered by the respective axle central point of two helical gears, and described circle is each and long straight line intersection respectively forms two intersection points in left and right, two intersection points wherein on a helical gear make pin hole, another helical gear calculates the collimation angle of two intersection points in two technique coordinate holes and left and right according to the a=360/ number of teeth/2, this helical gear makes two technique coordinate holes, left and right, after by two helical gear splicings, overlapping two, left and right pin hole is plugged in and two gears are spelled teeth by two technique coordinate holes by alignment pin, then the internal keyway of Linear cut two helical gear central shaft holes, make the helical gear of two pairings.
2. the spelling tooth processing method for processing herringbone bear according to claim 1, is characterized in that described common bevel wheel machining method comprises the steps:
A) skiving base;
B) gear hobbing after finishing teeth base;
C) six axially extending bores on chamfering bit tooth wall;
D) namely plain grinding after heat treatment is benchmark with small end face, plain grinding both ends of the surface;
E) roll flute, punching axle roll flute also requires that two helical gear common normal sizes are worn into unanimously;
On described helical gear, the making in two technique coordinate holes, left and right is: calculate a collimation angle according to the a=360/ number of teeth/2, another short lines is formed and the angle of this short lines and described long straight line intersection is described collimation angle centered by this helical gear shaft central point, by the short lines on this helical gear and describedly round-formedly have another two intersection points, respectively centered by these two intersection points make a technique coordinate hole; After by two helical gear splicings, two pin hole aimed at and technique coordinate holes about two helical gears spliced up and down are plugged on respectively by two alignment pins, after realizing two helical gear spelling teeth, synchronous cutting processing is carried out to the internal keyway of two helical gear central shaft holes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410853075.4A CN104646974B (en) | 2014-12-31 | 2014-12-31 | Tooth splicing machining method for machining herringbone gears |
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| CN201410853075.4A CN104646974B (en) | 2014-12-31 | 2014-12-31 | Tooth splicing machining method for machining herringbone gears |
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| CN104646974A true CN104646974A (en) | 2015-05-27 |
| CN104646974B CN104646974B (en) | 2017-05-03 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436640A (en) * | 2015-12-15 | 2016-03-30 | 常州金安冶金设备有限公司 | Parallel locking gear key groove manufacturing device and technique thereof |
| CN105563059A (en) * | 2015-12-10 | 2016-05-11 | 湖南南方宇航高精传动有限公司 | Machining method of internal herringbone gear |
| CN106825774A (en) * | 2016-12-25 | 2017-06-13 | 重庆润跃机械有限公司 | Herringbone bear processing unit (plant) |
| CN106825782A (en) * | 2016-12-25 | 2017-06-13 | 重庆润跃机械有限公司 | Herringbone bear deburred device |
| CN113714571A (en) * | 2021-11-01 | 2021-11-30 | 杭州前进齿轮箱集团股份有限公司 | Inner and outer tooth centering control structure of high-speed precision heavy-duty herringbone gear ring and machining method |
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| CN103418857A (en) * | 2013-09-02 | 2013-12-04 | 太原重工股份有限公司 | Herringbone gear tooth aligning device and assembling method |
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| EP1792682B1 (en) * | 2005-12-03 | 2009-11-04 | Maag Pump Systems Textron AG | Gear pump with herringbone gearing |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105563059A (en) * | 2015-12-10 | 2016-05-11 | 湖南南方宇航高精传动有限公司 | Machining method of internal herringbone gear |
| CN105436640A (en) * | 2015-12-15 | 2016-03-30 | 常州金安冶金设备有限公司 | Parallel locking gear key groove manufacturing device and technique thereof |
| CN105436640B (en) * | 2015-12-15 | 2018-01-09 | 常州金安冶金设备有限公司 | A kind of locking gear keyway manufacture device in parallel |
| CN106825774A (en) * | 2016-12-25 | 2017-06-13 | 重庆润跃机械有限公司 | Herringbone bear processing unit (plant) |
| CN106825782A (en) * | 2016-12-25 | 2017-06-13 | 重庆润跃机械有限公司 | Herringbone bear deburred device |
| CN106825774B (en) * | 2016-12-25 | 2018-09-21 | 重庆润跃机械有限公司 | Herringbone bear processing unit (plant) |
| CN106825782B (en) * | 2016-12-25 | 2018-09-21 | 重庆润跃机械有限公司 | Herringbone bear deburred device |
| CN113714571A (en) * | 2021-11-01 | 2021-11-30 | 杭州前进齿轮箱集团股份有限公司 | Inner and outer tooth centering control structure of high-speed precision heavy-duty herringbone gear ring and machining method |
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| CN104646974B (en) | 2017-05-03 |
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