CN104646974B - Tooth splicing machining method for machining herringbone gears - Google Patents
Tooth splicing machining method for machining herringbone gears Download PDFInfo
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- CN104646974B CN104646974B CN201410853075.4A CN201410853075A CN104646974B CN 104646974 B CN104646974 B CN 104646974B CN 201410853075 A CN201410853075 A CN 201410853075A CN 104646974 B CN104646974 B CN 104646974B
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- helical gear
- gear
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Processing (AREA)
- Gears, Cams (AREA)
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, belongs to Gear Manufacturing Technology field.
Background technology
Need to spell the involute herringbone bear of tooth as shown in figure 1, it requires the A gears of two spelling teeth and B gears, its teeth groove or
Transverse tooth thickness is mutually aligned, and two gear tooth slots or transverse tooth thickness symmetry error should be less than 0.03mm；Prior art processes the type gear one
As adopt method as shown in Figure 2, the processing method of its middle gear is：
1. gear is installed on dummy shaft before gear hobbing；2. one end profile of tooth has been rolled；3. platform and v shape ferrum centerings；4. by workpiece
Unload and be put in centering on v shape ferrum；5. relevant surface is tinted；6. mark on one end gear cylinder face for having rolled profile of tooth reference point A,
B, C, D, calculate and mark symmetrical center line (symmetrical plane in theory)；7. marked toward the other end on the basis of A, B, C, D, each point
Parallel lines；8. calculate and mark with A, B, C, D, symmetrical A, B, C, D and be connected A, B, C, D, etc. line segment, (such as Fig. 1) is 9. adjusted
Whole gear-hobbing machine；10. to Workpiece clamping centering；10. to knife, simultaneously trial cut knife is spent；@checks whether knife flower is consistent with rule；10. it is formal to roll
Cut and machine.This centering on platform, v shape ferrum applies line machining accuracy and can ensure that in error 0.10 or so, grinds after heat
Tooth cuts the operations such as keyway.
The shortcoming that above-mentioned existing spelling tooth processing method is primarily present has：
One is the precision that the precision of dummy shaft directly affects gear；
Two are positioned by keyway and the face of cylinder, tooth error degree of title are typically only capable to reach the essence of 0.05mm or so after spelling tooth
Degree, conforming product rate ＜ 50%；
Three need repeatedly to knife when being roll flute, and workbench needs frequently to move, and working (machining) efficiency is low；
Four is to be not suitable for batch production；
The content of the invention
It is an object of the invention to overcome the shortcomings of that prior art is present, and one kind is provided and can improve herringbone bear spelling tooth
Afterwards to tooth precision, improve the spelling tooth processing method for processing herringbone bear of working (machining) efficiency.
The purpose of the present invention by following technical solution completing, process by a kind of spelling tooth for processing herringbone bear
Method, the spelling tooth processing method first process the helical gears of two pairings according to common bevel wheel machining method, i.e., left-handed gear and
Dextrorotation gear, during the helical gear roll flute after heat treatment of two pairings, two helical gear public law linear dimensions is worn into
Unanimously, then by the theory of engagement, two helical gears are engaged, makes two helical gear axle centers be linked to be a long straight line, and with two
Two circles are formed centered on the respective axle central point of helical gear, and the circle respectively respectively forms the friendship of left and right two with long straight line intersection
Point, wherein two intersection points on a helical gear make pin hole, another helical gear is calculated according to the a=360/ number of teeth/2
Two technique coordinate holes and the collimation angle of two intersection points in left and right, make the two technique coordinate holes in left and right on the helical gear,
After by the splicing of two helical gears, by alignment pin be plugged in overlap the pin hole of left and right two and two technique coordinate holes by two
Gear spells tooth, then the internal keyway of two helical gear central shaft holes of wire cutting, makes the helical gear of two pairings.
Common bevel wheel machining method of the present invention comprises the steps：
A) skiving base；
B) calibrate gear hobbing after gear blank；
C) six axially extending bores on chamfering bit tooth wall；
D) plain grinding after heat treatment, i.e., on the basis of small end face, plain grinding both ends of the surface；
E) roll flute, punching axle roll flute simultaneously require that two helical gear public law linear dimensions are worn into unanimously；
On the helical gear left and right two technique coordinate holes making be：One is calculated according to the a=360/ number of teeth/2
Collimation angle, forms another short straight line and the short straight line and the long straight line intersection centered on the helical gear shaft central point
Angle is described collimation angle, is formed with another two intersection point with the circle by the short straight line on the helical gear, with this two
A technique coordinate hole is made centered on individual intersection point respectively；After by two helical gear splicings, grafting is distinguished by two alignment pins
In pin hole and the technique coordinate hole of the alignment of two helical gears for splicing up and down or so two, after realizing two helical gear spelling teeth,
Cutting processing is synchronized to the internal keyway of two helical gear central shaft holes.
The present invention can exponentially improve the precision after spelling tooth, and practical effect shows, can make missing to tooth for double helical tooth
Difference control is in 0.02～0.03mm, conforming product rate >=97%.The process meanses are easy to use, and reality processing efficiency is than existing
Technology improves about 40%, and economic benefit is very notable.
Description of the drawings
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 engagement machining sketch chart of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention will be described in detail：It is of the present invention a kind of for processing herringbone bear
Tooth processing method is spelled, the spelling tooth processing method first processes the helical gear of two pairings according to common bevel wheel machining method, i.e., left
The duplicate gear that rotation gear and dextrorotation gear are constituted, as shown in Figure 1, the helical gear roll flute after heat treatment of two pairings
When, two helical gear public law linear dimensions are worn into unanimously, then by the theory of engagement, two helical gears is engaged, Fig. 3 institutes are seen
Show, make the axle center of two helical gears A, B be linked to be a long straight line 1, and centered on the respective axle central point of two helical gears A, B
Two circles 2 are formed, and the circle 2 respectively intersects two intersection points in each formation left and right with long straight line 1, wherein two on a helical gear B
Individual intersection point makes pin hole 3, and another helical gear A calculates two technique coordinate holes 4 with left and right according to the a=360/ number of teeth/2
The collimation angle of two intersection points 5, makes the two technique coordinate holes 4 in left and right on helical gear A, and two helical gears A, B are being spelled
After connecing, the pin hole of left and right two 3 of overlap is plugged in by alignment pin and two gears are spelled tooth by two technique coordinate holes 4, so
The internal keyway of two helical gear A, B central shaft holes of wire cutting, makes the helical gear of two pairings afterwards.
Common bevel wheel machining method of the present invention comprises the steps：
A) skiving base；
B) calibrate gear hobbing after gear blank；
C) six axially extending bores on chamfering bit tooth wall；
D) plain grinding after heat treatment, i.e., on the basis of small end face, plain grinding both ends of the surface；
E) roll flute, punching axle roll flute simultaneously require that two helical gear public law linear dimensions are worn into unanimously；
On the helical gear A left and right two technique coordinate holes 4 making be：One is calculated according to the a=360/ number of teeth/2
Individual collimation angle, forms another short straight line 6, and the short straight line 6 and the long straight line 1 centered on helical gear A axle central points
Intersecting angle is described collimation angle, is formed with another two friendship by the short straight line 6 on helical gear A and the circle 2
Point 5, respectively makes a technique coordinate hole 4 centered on the two intersection points 5；After by two helical gear A, B splicings, by two
Alignment pin is plugged on the pin holes 3 of two alignment of two helical gears A, B splicing up and down or so and technique coordinate hole 4 respectively, realizes
After the spelling tooth of two helical gears A, B, cutting processing is synchronized to the internal keyway of two helical gear A, B central shaft holes.
The present invention is analyzed from the herringbone bear theory of engagement, and research, two gears are oppositely oriented, the equal common normal chi of helical angle
Very little consistent, two gears itself can be engaged, and the engagement of two gears is that centre-to-centre spacing is A, then two gears are pressed center on jig bore
Compress (such as Fig. 3) away from A engagements, by the theory of engagement, if the engagement of two gears, the two gear centre planes that are bound to overlap, therefore α=360/ tooth
Number/2, just can draw 2 technique coordinates after calculating, be spliced tooth (such as Fig. 3) by two fabrication holes, therefore to two gears in quenching
Before, antiseepage is applied to technique hole location, in this position processing technique alignment pin after heat, two parts is spelled by tooth by alignment pin
Afterwards, wire cutting inside groove, so as to ensure the coincidence of two tooth central plane of gear, to tooth error control within 0.03；
Embodiment：As a example by processing certain model herringbone bear, gear parameter is：Modulus M=5, tooth number Z=73, pressure angle α
=20 °, 30 ＇ of helixangleβ=11 °, the hand of spiral：Left-handed, dextrorotation is each 1, modification coefficient X=0.03, across 9 tooth base tangent lengthsIn process, only should be noted that keyway wouldn't be processed, after heat during roll flute, two teeth of pairing
Wheel public law linear dimension is worn into unanimously, and remaining and is processed by common bevel wheel machining, then by preceding method mounting tool
Afterwards, within metric results show that the spelling tooth symmetry of herringbone bear can reach 0.03mm.
Claims (2)
1. a kind of spelling tooth processing method for processing herringbone bear, the spelling tooth processing method is first according to common bevel wheel machining side
Method processes the helical gear of two pairings, i.e., left-handed gear and dextrorotation gear, it is characterised in that the helical gear of two pairings exists
During roll flute after heat treatment, two helical gear public law linear dimensions are worn into unanimously, then by the theory of engagement, by two helical gears
Engagement, makes two helical gear axle centers be linked to be a long straight line, and is formed centered on the respective axle central point of two helical gears
Two circles, and each circle respectively forms two intersection points in left and right with long straight line intersection, wherein two intersection point systems on a helical gear
Into pin hole, another helical gear calculates the school in two technique coordinate holes and two intersection points in left and right according to the a=360/ number of teeth/2
Quasi- angle, makes the two technique coordinate holes in left and right on the helical gear, after by two helical gear splicings, by alignment pin grafting
Two gears are spelled into tooth in the pin hole of left and right two and two technique coordinate holes for overlapping, then two helical gear centers of wire cutting
The internal keyway of axis hole, makes the helical gear of two pairings.
2. the spelling tooth processing method for processing herringbone bear according to claim 1, it is characterised in that described is common
Bevel wheel machining method comprises the steps：
a）Skiving base；
b）Gear hobbing after calibration gear blank；
c）Six axially extending bores on chamfering bit tooth wall；
d）Plain grinding after heat treatment, i.e., on the basis of small end face, plain grinding both ends of the surface；
e）Roll flute, punching axle roll flute simultaneously require that two helical gear public law linear dimensions are worn into unanimously；
On the helical gear left and right two technique coordinate holes making be：A collimation angle is calculated according to the a=360/ number of teeth/2
Degree, another short straight line is formed centered on the helical gear shaft central point and the angle of the short straight line and the long straight line intersection i.e.
For described collimation angle, another two intersection point is formed with the circle by the short straight line on the helical gear, with the two intersection points
Centered on respectively make a technique coordinate hole；After by two helical gear splicings, it is plugged on respectively up and down by two alignment pins
The pin hole of two helical gears of splicing or so, two alignment and technique coordinate hole, after realizing two helical gear spelling teeth, to two
The internal keyway of helical gear central shaft hole synchronizes cutting processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410853075.4A CN104646974B (en) | 2014-12-31 | 2014-12-31 | Tooth splicing machining method for machining herringbone gears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410853075.4A CN104646974B (en) | 2014-12-31 | 2014-12-31 | Tooth splicing machining method for machining herringbone gears |
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| CN104646974A CN104646974A (en) | 2015-05-27 |
| CN104646974B true CN104646974B (en) | 2017-05-03 |
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Families Citing this family (5)
| 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 |
| 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 |
| CN106825782B (en) * | 2016-12-25 | 2018-09-21 | 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) |
| CN113714571B (en) * | 2021-11-01 | 2022-02-22 | 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE502005008454D1 (en) * | 2005-12-03 | 2009-12-17 | Maag Pump Systems Ag | Gear wheel pump with herringbone toothing |
| CN100431761C (en) * | 2006-03-30 | 2008-11-12 | 中国第一重型机械集团公司 | Double herringbone gear in-phase processing method |
| CN100525977C (en) * | 2007-07-23 | 2009-08-12 | 重庆齿轮箱有限责任公司 | Processing method of high-accuracy herringbone gear without withdrawing groove hard tooth surface |
| DE102010027300A1 (en) * | 2010-07-16 | 2012-01-19 | Neumayer Tekfor Holding Gmbh | Spur gear, production of a system for torque transmission and corresponding system |
| CN103418857B (en) * | 2013-09-02 | 2016-02-10 | 太原重工股份有限公司 | Herringbone bear tooth mesh device and assembly method |
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