CN102922050A - Constant rotation speed non-circular gear hobbing method with automatic setting angle adjustment function for gear billet - Google Patents
Constant rotation speed non-circular gear hobbing method with automatic setting angle adjustment function for gear billet Download PDFInfo
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- CN102922050A CN102922050A CN2012103999437A CN201210399943A CN102922050A CN 102922050 A CN102922050 A CN 102922050A CN 2012103999437 A CN2012103999437 A CN 2012103999437A CN 201210399943 A CN201210399943 A CN 201210399943A CN 102922050 A CN102922050 A CN 102922050A
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- tooth base
- gear
- axis
- hobboing cutter
- rotation speed
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Abstract
The invention belongs to the field of manufacturing of a gear or a rack, particularly the field of tooth manufacturing on a gear with varying working radius, and relates to a constant rotation speed non-circular gear hobbing method with an automatic setting angle adjustment function for a gear billet. The method comprises a five-axis four-linkage scheme and a six-axis five-linkage scheme, wherein the setting angle of a hob can be automatically adjusted by an independent numerical control axis, and the automation degree and the adjustment accuracy are higher. Four-linkage in the five-axis four-linkage scheme is that with constant gear billet rotation speed, Y-axis speed and rotation speed of a hob are in linkage according to generating movement relative to the rotation speed of the gear billet, and the Z-axis speed is linked linearly relative to the rotation speed of the gear billet; and five-linkage in the six-axis five-linkage scheme is that with constant gear billet rotation speed, the Y-axis speed, X-axis speed and the rotation speed of the hob are in linkage according to the generating movement relative to the rotation speed of the gear billet, and the Z-axis speed is linked linearly relative to the rotation speed of the gear billet. According to the method, the constant rotation speed of the gear billet, which is used as a reference frequency, is lower, the requirement on a detection element is lower, and the detection accuracy is higher. The method can be used for numerical control gear hobbing of non-circular straight/bevel gears and elliptical type straight/bevel gears.
Description
Technical field
The invention belongs to the manufacturing field of gear or tooth bar, especially in the wheel tooth processed field that the radius of clean-up changes, relate to a kind of permanent rotating speed non-circular gear of tooth base hobbing method with automatically adjusting established angle.
Background technology
Non-circular gear combines the advantage of Knucle-gear and cam mechanism, can exactly with the continuous change power larger than transmission, in fields such as engineering machinery, lathe, automobile, Aero-Space application be arranged.Current industrial is used the normal line cutting technology processing non-circular gear that adopts, and line cuts not only inefficiency, and helpless to non-round helical gear.Non-round helical gear also rests on theoretical research stage at present, has no industrial production and application.
Gear hobbing is the non-knuckle-tooth method of a kind of highly-efficient processing, and " non-round helical gear rolling cut processing CNC interlock control program " literary composition of " China Mechanical Engineering " is studied the permanent rotating speed four-shaft four-linkage of non-round helical gear hobboing cutter, the permanent rotating speed five shaft five linkage of hobboing cutter scheme; Chinese patent CN200810035148.3 discloses the implementation method of the permanent rotating speed four-shaft four-linkage of non-round helical gear hobboing cutter, the permanent rotating speed five shaft five linkage of hobboing cutter scheme, but does not relate to concrete control method, is difficult to engineering and uses.In addition, the hobboing cutter established angle can not be adjusted automatically in the existing hobbing method.
In the permanent rotating speed method of hobboing cutter, the hobboing cutter invariablenes turning speed, workpiece moves with respect to arc length such as hobboing cutter works.In the method, adopt detecting element to detect the hobboing cutter rotating speed, as reference frequency, relatively its interlock of all the other axles.Because the hobboing cutter rotating speed is higher, detecting element is had relatively high expectations, and very easily produce error.
Summary of the invention
The object of the invention is to: for the problem of above-mentioned prior art existence, a kind of permanent rotating speed non-circular gear of tooth base hobbing method of automatic adjustment established angle is proposed, realize the automatic adjustment of hobboing cutter established angle, and based on tooth base constant speed control four axles or five-axle linkage realization generating motion, the non-round spur gear of rolling cut or helical gear.
The objective of the invention is to be achieved through the following technical solutions.
The permanent rotating speed non-circular gear of the tooth base of automatic adjustment established angle of the present invention hobbing method, comprise hobboing cutter or tooth base along Y-axis move, hobboing cutter or tooth base along X axis move, hobboing cutter or tooth base along Z-axis direction move, hobboing cutter around the B axle rotatablely move, the tooth base rotatablely moves around the C axle; In addition, also comprise following content:
(1) the hobboing cutter established angle is adjusted axle A axle, and described A axle adopts independent numerical control axle, according to Hobbing helical angle automatically controlled adjustment hobboing cutter established angle in advance, immobilizes in the rolling process;
(2) in the tooth base end face, adopt the permanent rotating speed method of tooth base, namely the tooth base is with respect to the motion of the corners such as lathe work, and detecting element detects tooth base rotating speed as reference frequency, relatively its interlock of all the other axles.
The permanent rotating speed non-circular gear of the tooth base of described automatic adjustment established angle hobbing method can realize the moving non-round spur gear of rolling cut of five axle tetrads or helical gear, and method is: tooth base rotating speed
Constant, Y-axis speed in the tooth base end face
, the hobboing cutter rotating speed
Relatively
By the generating motion interlock; Z axis speed in the tooth base axial plane
Relatively
By linear interlock.
The permanent rotating speed non-circular gear of the tooth base of described automatic adjustment established angle hobbing method can realize the non-round spur gear of six-axle five-linkage rolling cut or helical gear, and method is: tooth base rotating speed
Constant, Y-axis speed in the tooth base end face
, X-axis speed in the tooth base end face
, the hobboing cutter rotating speed
Relatively
By the generating motion interlock; Z axis speed in the tooth base axial plane
Relatively
By linear interlock.
The invention has the beneficial effects as follows: the permanent rotating speed non-circular gear of the tooth base of automatic adjustment established angle of the present invention hobbing method, independent numerical control axle is adjusted the hobboing cutter established angle automatically, relatively the frame for movement automaticity, to adjust precision higher, labor strength is lower; The permanent rotating speed method of employing tooth base, detecting element detects tooth base rotating speed as reference frequency, and relatively its interlock of all the other axles is lower to the detecting element requirement because tooth base rotating speed is lower, and accuracy of detection is higher.
Description of drawings
Fig. 1 is the permanent rotating speed non-circular gear of the tooth base hobbing method schematic diagram that the present invention adjusts established angle automatically;
Fig. 2 is the moving non-round spur gear of rolling cut of the present invention's five axle tetrads or beveled gear teeth base end view;
Fig. 3 is the moving non-round spur gear Path figure of rolling cut of the present invention's five axle tetrads;
Fig. 4 is the moving non-round helical gear Path figure of rolling cut of the present invention's five axle tetrads;
Fig. 5 is the non-round spur gear of six-axle five-linkage rolling cut of the present invention or beveled gear teeth base end view;
Fig. 6 is the non-round spur gear Path figure of six-axle five-linkage rolling cut of the present invention;
Fig. 7 is the non-round helical gear Path figure of six-axle five-linkage rolling cut of the present invention.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Embodiment one
Referring to accompanying drawing 1, illustrated the present invention automatically to adjust each axle interaction relation of the permanent rotating speed non-circular gear of tooth base hobbing method of established angle.Independent numerical control axle A axle is driven by stepper motor, can drive hobboing cutter 101 and rotate in vertical plane, automatically adjusts hobboing cutter 101 established angles.During the non-round spur gear of rolling cut, the established angle of hobboing cutter 101
The lead angle that only depends on hobboing cutter 101
, and
=
During the non-round helical gear of rolling cut, the established angle of hobboing cutter 101
The lead angle that depends on hobboing cutter 101
Helical angle with processed gear 102
, when hobboing cutter 101 is consistent with gear 102 helix rotation directions
=
-
, when hobboing cutter 101 is opposite with gear 102 helix rotation directions
=
+
In tooth base 102 end faces, tooth base 102 rotating speeds
Constant, hobboing cutter 101 gyrations
Strictly interlock consists of the generating motion that produces involute with it; For guaranteeing hobboing cutter nodel line and the real-time tangent and maintenance pure rolling of gear pitch curve in the rolling cut process, Y-axis speed in tooth base 102 end faces
With
Interlock, referring to accompanying drawing 2, when initial, tooth base corner
=0, pitch curve 201 polar angles
=0, in a certain moment, the tooth bar that the hobboing cutter rotation forms at the end face intrinsic displacement is
, the arc length AP that tooth base pitch curve 202 turns over equals with it hobboing cutter nodel line 201 length of pure rolling
In tooth base 102 axial planes, hobboing cutter 101 or tooth base 102 have
Motion, thereby rolling cut full-depth tooth.For guaranteeing the flank of tooth along the axis uniform precision,
With
Linear interlock; To non-round helical gear, according to flank of tooth Z axis position, determine hobboing cutter 101 additional gyrations
Based on said method, according to the Differential Geometry principle, derive the moving non-round spur gear of rolling cut of five axle tetrads or helical gear interlock equation as follows.
Be pitch curve utmost point footpath;
Be polar angle;
Be hobboing cutter head number;
Be the gear normal module;
Be non-round oblique gear spiral angle.During the non-round spur gear of rolling cut,
During the non-round helical gear of rolling cut,
, get "-" when hobboing cutter is consistent with the Gear Helix rotation direction, otherwise get "+".
Adopt the Path of the non-round spur gear of described interlock equation rolling cut to see Fig. 3; The helical gear Path of the non-circle of rolling cut is seen Fig. 4, as seen, and correctly rolling.
Embodiment two
Referring to accompanying drawing 1 and accompanying drawing 2, relatively described embodiment one also has the X-axis motion in tooth base 102 end faces
With
Interlock,
,
With
Guarantee together hobboing cutter nodel line 201 and gear pitch curve 202 real-time tangent and maintenance pure rolling in the rolling cut process.Referring to accompanying drawing 5, when initial, tooth base corner
=0, pitch curve 502 polar angles
=0; In a certain moment, the tooth bar 501 that the hobboing cutter rotation forms at the end face intrinsic displacement is
, the arc length AP that the tooth base of the pure rolling that equals turns over.
Interlock method in the tooth base axial plane is identical with embodiment one.
Based on said method, according to the Differential Geometry principle, derive the non-round spur gear of six-axle five-linkage rolling cut or helical gear interlock equation as follows.
During the non-round spur gear of rolling cut,
During the non-round helical gear of rolling cut,
, get "-" when hobboing cutter is consistent with the Gear Helix rotation direction, otherwise get "+".
Adopt the Path of the non-round spur gear of described interlock equation rolling cut to see Fig. 6; The helical gear Path of the non-circle of rolling cut is seen Fig. 7, as seen, and correctly rolling.
Claims (3)
1. the permanent rotating speed non-circular gear of tooth base hobbing method of automatically adjusting established angle, comprise hobboing cutter or tooth base along Y-axis move, hobboing cutter or tooth base along X axis move, hobboing cutter or tooth base along Z-axis direction move, hobboing cutter around the B axle rotatablely move, the tooth base rotatablely moves around the C axle; It is characterized in that:
(1) comprise that also the hobboing cutter established angle adjusts axle A axle, described A axle adopts independent numerical control axle, according to Hobbing helical angle automatically controlled adjustment hobboing cutter established angle in advance, immobilizes in the rolling process;
(2) in the tooth base end face, adopt the permanent rotating speed method of tooth base, namely the tooth base is with respect to the motion of the corners such as lathe work, and detecting element detects tooth base rotating speed as reference frequency, relatively its interlock of all the other axles.
2. the permanent rotating speed non-circular gear of the tooth base of automatic adjustment established angle according to claim 1 hobbing method can realize the moving non-round spur gear of rolling cut of five axle tetrads or helical gear, it is characterized in that: tooth base rotating speed
Constant, Y-axis speed in the tooth base axial plane
, the hobboing cutter rotating speed
Relatively
By the generating motion interlock; Z axis speed in the tooth base axial plane
Relatively
By linear interlock.
3. the permanent rotating speed non-circular gear of the tooth base of automatic adjustment established angle according to claim 1 hobbing method can realize the non-round spur gear of six-axle five-linkage rolling cut or helical gear, it is characterized in that: tooth base rotating speed
Constant, Y-axis speed in the tooth base axial plane
, X-axis speed in the tooth base axial plane
, the hobboing cutter rotating speed
Relatively
By the generating motion interlock; Z axis speed in the tooth base axial plane
Relatively
By linear interlock.
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CN2012103999437A CN102922050A (en) | 2012-10-19 | 2012-10-19 | Constant rotation speed non-circular gear hobbing method with automatic setting angle adjustment function for gear billet |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104259583A (en) * | 2014-08-14 | 2015-01-07 | 合肥工业大学 | Gear blank constant angular speed-rotating slotting method for angles for non-cylindrical gears |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101028660A (en) * | 2007-04-06 | 2007-09-05 | 吉林大学 | Gear precisive hob configuration and its configured precisive hob |
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 |
-
2012
- 2012-10-19 CN CN2012103999437A patent/CN102922050A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101028660A (en) * | 2007-04-06 | 2007-09-05 | 吉林大学 | Gear precisive hob configuration and its configured precisive hob |
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 |
Non-Patent Citations (2)
Title |
---|
刘有余等: "椭圆齿轮滚齿加工三维仿真研究", 《机械设计》 * |
胡赤兵等: "非圆斜齿轮滚切加工CNC联动控制方案", 《 中国机械工程 》 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104259583A (en) * | 2014-08-14 | 2015-01-07 | 合肥工业大学 | Gear blank constant angular speed-rotating slotting method for angles for non-cylindrical gears |
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 |
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Application publication date: 20130213 |