CN102962529B - Seven-shaft and six-linkage opposite angle roll cutting method for non-circular gear - Google Patents
Seven-shaft and six-linkage opposite angle roll cutting method for non-circular gear Download PDFInfo
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- CN102962529B CN102962529B CN201210481976.6A CN201210481976A CN102962529B CN 102962529 B CN102962529 B CN 102962529B CN 201210481976 A CN201210481976 A CN 201210481976A CN 102962529 B CN102962529 B CN 102962529B
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- hobboing cutter
- gear
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- axle
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Abstract
The invention belongs to the field of numerical control machining of gears and relates to a seven-shaft and six-linkage opposite angle roll cutting method for a non-circular gear. In the implementation process of the method, three fundamental frequency shafts, another three shafts linked with the three fundamental frequency shafts and an independent numerical control shaft are applied; a hobbing cutter also continuously moves along the axis of the hobbing cutter while vertically feeding; and a linkage mathematical model is disclosed. According to the seven-shaft and six-linkage opposite angle roll cutting method disclosed by the invention, all blades of the hobbing cutter can be fully and effectively utilized; cutter tooth wear is uniformly distributed; the durability of the cutter is improved; the tooth profile shape precision and the surface roughness can be improved; and the independent numerical control shaft can automatically adjust a mounting angel of the hobbing cutter, and compared with a mechanical structure, the independent numerical control shaft has the advantages of higher automatic degree, higher adjustment precision and lower labor intensity of workers. The seven-shaft and six-linkage opposite angle roll cutting method disclosed by the invention can be used for numerical control gear hobbing of non-circular spur gears, non-circular helical gears, elliptical spur gears and elliptical helical gears.
Description
Technical field
The invention belongs to the manufacture field of gear or tooth bar, especially tooth field processed on the wheel of radius of clean-up change, relates to a kind of seven axis six-linkage diagonal angle rolling cut convex pitch curve non-circular gear method.
Background technology
Non-circular gear comprises elliptic gear, oval gear, high order elliptic gear, distortion (property) elliptic gear etc., its pitch curve is non-constant at the mould in footpath, pole, different polar angle place, of a great variety complex-shaped, become violent during Rolling-cut shear during (angle) speed, (angle) acceleration of universal driving shaft, processing difficulties and precision are difficult to ensure.Current, manufacturing technology is the bottleneck that restriction non-circular gear is applied, and industrial most employing line cutting technology realizes.Linear cutter not only efficiency is extremely low, and helpless to helical gear.
Rolling cut is a kind of highly-efficient processing method, and " not rounded helical gear Rolling-cut shear CNC coordinated signals scheme " literary composition of " China Mechanical Engineering " is studied not rounded helical gear four-shaft four-linkage, five shaft five linkage; Chinese patent CN200810035148.3 discloses the implementation method of not rounded helical gear four-shaft four-linkage, five shaft five linkage.These work achieve the Rolling-cut shear of not rounded (straight/oblique) gear, but because hobboing cutter is vertically without displacement feeding, in rolling cut process, hobboing cutter only have some less cutters tooth participate in rolling cut, and the blade on each cutter tooth only has fixing a bit of actual cut, these blades constantly wear and tear in working angles, affect workpiece profile geometry precision and surface roughness.Load and the wearing and tearing of the axial hobboing cutter cutter tooth without displacement feeding are extremely uneven, and its durability is decided by the maximum cutter tooth that wherein weares and teares, and durability is extremely low.
The effective ways solved the problem adopt diagonal angle hobbing method.Current diagonal angle rolls and is mainly used in roller gear gear-hobbing machine, a kind ofly replacing tangential hobhead to realize the three-axis numerical control gear-hobbing machine of diagonal angle rolling cut with altering cutter knife rest, can effectively improve hobboing cutter durability to rolling cut roller gear as Chinese patent CN 200910300162.6 disclosing.Up to now, there is not yet the report this technology being directly applied to non-circular gear rolling cut.
Summary of the invention
The object of the invention is to: for above-mentioned prior art Problems existing, propose a kind of non-circular gear seven axis six-linkage diagonal angle hobbing method, allow hobboing cutter while vertical feed, also along own axes continuous moving, make the equilibrium of each tooth participate in cutting.
The object of the invention is to be achieved through the following technical solutions.
Non-circular gear seven axis six-linkage diagonal angle of the present invention hobbing method, universal driving shaft comprise hobboing cutter or workbench along X to offset axis, hobboing cutter or workbench along Y-direction offset axis, hobboing cutter or workbench along Z-direction offset axis, hobboing cutter rotary motion B axle, worktable rotary move C axle; Also comprise hobboing cutter along own axes direction offset axis D axle, in rolling cut process, hobboing cutter is along own axes (D axle) continuous moving, and each rolling cut tooth equilibrium participates in cutting, Load on Cutting Teeth and even wearing; Also comprise the A axle of adjustment hobboing cutter established angle, described A axle adopts digital control technology to adjust in advance for Hobbing helical angle, immobilizes in rolling process; Hobboing cutter or workbench move along X-axis and Y-axis in strict accordance with ganged movement rule, hobboing cutter rotating speed
and rotating speed of table
rotate in strict accordance with appointment variable ratio, make hobboing cutter projection tooth bar and tooth base pure rolling, and keep tooth base pitch curve to contact with hobboing cutter nodel line is tangent; It is characterized in that: hobboing cutter rotating speed
, hobboing cutter is along D axle translational speed
, hobboing cutter or workbench be along Z axis relative displacement
constant, and separate, form three fundamental frequencies, rotating speed of table
, hobboing cutter or workbench be along X-axis relative displacement
, hobboing cutter or workbench be along Y-axis relative displacement
relatively described three fundamental frequencies interlock, interlock Mathematical Modeling is as follows:
for footpath, pitch curve pole;
for polar angle;
for hob head number;
for gear normal module;
for symbol coefficient;
for symbol coefficient;
for hobboing cutter lead angle;
for not rounded oblique gear spiral angle.
Described
direction with
when meeting right-handed helix rule, described interlock Mathematical Modeling
; Described
direction with
when meeting left hand helix rule, described interlock Mathematical Modeling
.
Can rolling cut not rounded spur gear and not rounded helical gear, to not rounded spur gear, described interlock Mathematical Modeling
=0; To not rounded helical gear, when hobboing cutter is consistent with the Gear Helix rotation direction, described interlock Mathematical Modeling
, when hobboing cutter is contrary with the Gear Helix rotation direction, described interlock Mathematical Modeling
.
The invention has the beneficial effects as follows: non-circular gear seven axis six-linkage diagonal angle of the present invention hobbing method, hobboing cutter, while vertical feed, also along own axes continuous moving, fully can effectively utilize whole blades of hobboing cutter, uniform distribution cutter tooth weares and teares, and improves tool life.Independent numerical control axle adjusts hobboing cutter established angle automatically, and relative mechanical structure automaticity, Adjustment precision are higher, and labor strength is lower.
Accompanying drawing explanation
Fig. 1 is non-circular gear seven axis six-linkage diagonal angle of the present invention hobbing method schematic diagram;
Fig. 2 is non-circular gear seven axis six-linkage diagonal angle of the present invention rolling cut tooth base end view;
Fig. 3 be hobboing cutter of the present invention consistent with the Gear Helix rotation direction time rolling cut public tangent plane schematic diagram;
Fig. 4 be hobboing cutter of the present invention contrary with the Gear Helix rotation direction time rolling cut public tangent plane schematic diagram.
detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
See accompanying drawing 1, illustrate each axle interaction relation of non-circular gear seven axis six-linkage diagonal angle hobbing method of the present invention.Hobboing cutter 101 is tooth bar at tooth base 102 end face inner projection, and hobboing cutter 101 rotates
instrument tooth bar can be formed.
rotate with tooth base 102
form generate gear motion by strict gearratio, make tooth base pitch curve opposite tool tooth bar work without the pure rolling of relative sliding.See accompanying drawing 2, tooth base pitch curve 202 and hobboing cutter nodel line 201 are tangential on instantaneous P.See accompanying drawing 1, pure rolling requires that tooth base 102 was both done
rotate, also do edge
axle and
the movement of axle
with
.For cutting full-depth tooth, hobboing cutter 101 also needs to move axially along workpiece
, itself and tooth base 102 add gyration
interlock, forms instrument helical rack.In addition, hobboing cutter 101 is also along own axes continuous moving
, participate in rolling cut to make hobboing cutter 101 full-depth tooth.
direction can be with
meet right-handed helix rule (being designated as " I "), also can meet with it left hand helix rule (being designated as " II ").See accompanying drawing 2,
component velocity is in the horizontal direction
, instrument tooth bar synthesis translational speed is
;
component velocity is vertically
, see accompanying drawing 3 and accompanying drawing 4,
, its with
aggregate velocity be
.Not rounded helical gear have left-handed (being designated as " I ") and dextrorotation (being designated as " II ") point.
Can according to teeth directional required precision, select rational aggregate velocity to be
; Certificate again
size, it is suitable to determine
.To not rounded helical gear, aggregate velocity
move axially a helical pitch along tooth base, tooth base palpus additional rotation one week, determines with this
size.
Described non-circular gear seven axis six-linkage diagonal angle hobbing method, adopts described interlock Mathematical Modeling, total " I " and " II " 2 kinds of implementations, can rolling cut " I " and " II " 2 type gear (to spur gear,
=0, can conclude in " I " or " II " any class).In addition, hobboing cutter lead angle used also have left-handed (being designated as " A ") and dextrorotation (being designated as " B ") point, total A I I, A I II, A II I, A II II, B I I, B I II, B II I, B II II eight kinds of operating modes.
Embodiment one
The present embodiment is A I I operating mode,
direction with
meet right-handed helix rule, rolling cut not rounded left-hand helical gear, adopt lefthand hob.The interlock Mathematical Modeling of this example is:
Embodiment two
The present embodiment is A I II operating mode,
direction with
meet right-handed helix rule, rolling cut not rounded dextrorotation helical gear, adopt lefthand hob.Interlock Mathematical Modeling is:
Embodiment three
The present embodiment is A II I operating mode,
direction with
meet left hand helix rule, rolling cut not rounded left-hand helical gear, adopt lefthand hob.Interlock Mathematical Modeling is:
Embodiment four
The present embodiment is A II II operating mode,
direction with
meet left hand helix rule, rolling cut not rounded dextrorotation helical gear, adopt lefthand hob.Interlock Mathematical Modeling is:
Embodiment five
The present embodiment is B I I operating mode,
direction with
meet right-handed helix rule, rolling cut not rounded left-hand helical gear, adopt right-hand hob.The interlock Mathematical Modeling of this example is:
Embodiment six
The present embodiment is B I II operating mode,
direction with
meet right-handed helix rule, rolling cut not rounded dextrorotation helical gear, adopt right-hand hob.Interlock Mathematical Modeling is:
Embodiment seven
The present embodiment is B II I operating mode,
direction with
meet left hand helix rule, rolling cut not rounded left-hand helical gear, adopt right-hand hob.Interlock Mathematical Modeling is:
Embodiment eight
The present embodiment is B II II operating mode,
direction with
meet left hand helix rule, rolling cut not rounded dextrorotation helical gear, adopt right-hand hob.Interlock Mathematical Modeling is:
Except described eight kinds of embodiments, the present invention can also have the combination between these eight kinds of embodiments, as axial reciprocating displacement method: first adopt scheme " A II I ", when meshing point P moves to hobboing cutter end, adopt scheme " A I I " again, then meshing point P oppositely shifts to top from hobboing cutter end, after arriving top, adopt scheme " A II I " again, so repeatedly.In the method rolling cut process, hobboing cutter does not have idle stroke, flank profil surface also gapless.Should preferentially adopt.
In a word, described eight kinds of embodiments, all employings are equal to the technical scheme of replacement or the formation of equivalent transformation form, all drop on the protection domain of application claims.
Claims (2)
1. a non-circular gear seven axis six-linkage diagonal angle hobbing method, universal driving shaft comprise hobboing cutter or workbench along X to offset axis, hobboing cutter or workbench along Y-direction offset axis, hobboing cutter or workbench along Z-direction offset axis, hobboing cutter rotary motion B axle, worktable rotary move C axle; Also comprise hobboing cutter along own axes direction offset axis D axle, in rolling cut process, hobboing cutter is along own axes (D axle) continuous moving, and each rolling cut tooth equilibrium participates in cutting, Load on Cutting Teeth and even wearing; Also comprise the A axle of adjustment hobboing cutter established angle, described A axle adopts digital control technology to adjust in advance for Hobbing helical angle, immobilizes in rolling process; Hobboing cutter or workbench move along X-axis and Y-axis in strict accordance with ganged movement rule, hobboing cutter rotating speed
and rotating speed of table
rotate in strict accordance with appointment variable ratio, make hobboing cutter projection tooth bar and tooth base pure rolling, and keep tooth base pitch curve to contact with hobboing cutter nodel line is tangent; It is characterized in that: hobboing cutter rotating speed
, hobboing cutter is along D axle translational speed
, hobboing cutter or workbench be along Z axis relative displacement
constant, and separate, form three fundamental frequencies, rotating speed of table
, hobboing cutter or workbench be along X-axis relative displacement
, hobboing cutter or workbench be along Y-axis relative displacement
relatively described three fundamental frequencies interlock, interlock Mathematical Modeling is as follows:
for footpath, pitch curve pole;
for polar angle;
for hob head number;
for gear normal module;
for symbol coefficient;
for symbol coefficient;
for hobboing cutter lead angle;
for not rounded oblique gear spiral angle.
2. non-circular gear seven axis six-linkage diagonal angle according to claim 1 hobbing method, is characterized in that: described in
direction with
when meeting right-handed helix rule, described interlock Mathematical Modeling
; Described
direction with
when meeting left hand helix rule, described interlock Mathematical Modeling
.
3. non-circular gear seven axis six-linkage diagonal angle according to claim 1 hobbing method, is characterized in that: can rolling cut not rounded spur gear and not rounded helical gear, to not rounded spur gear, described interlock Mathematical Modeling
=0; To not rounded helical gear, when hobboing cutter is consistent with the Gear Helix rotation direction, described interlock Mathematical Modeling
, when hobboing cutter is contrary with the Gear Helix rotation direction, described interlock Mathematical Modeling
.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210481976.6A CN102962529B (en) | 2012-11-25 | 2012-11-25 | Seven-shaft and six-linkage opposite angle roll cutting method for non-circular gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210481976.6A CN102962529B (en) | 2012-11-25 | 2012-11-25 | Seven-shaft and six-linkage opposite angle roll cutting method for non-circular gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102962529A CN102962529A (en) | 2013-03-13 |
| CN102962529B true CN102962529B (en) | 2014-12-17 |
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ID=47793119
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210481976.6A Expired - Fee Related CN102962529B (en) | 2012-11-25 | 2012-11-25 | Seven-shaft and six-linkage opposite angle roll cutting method for non-circular gear |
Country Status (1)
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259583B (en) * | 2014-08-14 | 2016-08-24 | 合肥工业大学 | The corner slotting methods such as the tooth base of a kind of non-cylindrical gear |
Citations (7)
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|---|---|---|---|---|
| GB1321707A (en) * | 1969-10-09 | 1973-06-27 | Maag Zahnraeder & Maschinen Ag | Generating method and apparatus for producing varying ratio gearing |
| CN101028660A (en) * | 2007-04-06 | 2007-09-05 | 吉林大学 | Gear precisive hob configuration and its configured precisive hob |
| CN201089046Y (en) * | 2007-08-30 | 2008-07-23 | 陈立新 | Combined blade carrier of gear hobbing machine |
| CN101244474A (en) * | 2008-03-25 | 2008-08-20 | 东华大学 | Numerical control gear hobbing method for processing helical teeth elliptic gear and helical teeth non-circular gear |
| CN101298106A (en) * | 2008-06-24 | 2008-11-05 | 重庆大学 | Zero-drive chain digital control gear hobbing machine |
| CN101596624A (en) * | 2009-01-13 | 2009-12-09 | 陈立新 | The diagonal angle rolling cut three-axis numerical control hobbling machine |
| CN102513863A (en) * | 2012-01-05 | 2012-06-27 | 重庆格恩格机床有限公司 | Knife holder of machine tool |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2796624B2 (en) * | 1987-10-02 | 1998-09-10 | アイシン精機株式会社 | Gear processing machine |
| AU2002218504A1 (en) * | 2000-11-30 | 2002-06-11 | Takehiro Otsubo | Method of manufacturing asymmetric gear, asymmetric gear, non-circular and asymmetric gear, gear mechanism, and barrel finishing machine |
-
2012
- 2012-11-25 CN CN201210481976.6A patent/CN102962529B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1321707A (en) * | 1969-10-09 | 1973-06-27 | Maag Zahnraeder & Maschinen Ag | Generating method and apparatus for producing varying ratio gearing |
| CN101028660A (en) * | 2007-04-06 | 2007-09-05 | 吉林大学 | Gear precisive hob configuration and its configured precisive hob |
| CN201089046Y (en) * | 2007-08-30 | 2008-07-23 | 陈立新 | Combined blade carrier of gear hobbing machine |
| CN101244474A (en) * | 2008-03-25 | 2008-08-20 | 东华大学 | Numerical control gear hobbing method for processing helical teeth elliptic gear and helical teeth non-circular gear |
| CN101298106A (en) * | 2008-06-24 | 2008-11-05 | 重庆大学 | Zero-drive chain digital control gear hobbing machine |
| CN101596624A (en) * | 2009-01-13 | 2009-12-09 | 陈立新 | The diagonal angle rolling cut three-axis numerical control hobbling machine |
| CN102513863A (en) * | 2012-01-05 | 2012-06-27 | 重庆格恩格机床有限公司 | Knife holder of machine tool |
Non-Patent Citations (2)
| Title |
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| 椭圆齿轮滚齿加工三维仿真研究;刘有余等;《机械设计》;20120531;第29卷(第5期);第50-53页 * |
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| CN102962529A (en) | 2013-03-13 |
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