CN1304166C - Method for finishing grinding wheel based on involute of arc and dresser - Google Patents
Method for finishing grinding wheel based on involute of arc and dresser Download PDFInfo
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- CN1304166C CN1304166C CNB2004100221104A CN200410022110A CN1304166C CN 1304166 C CN1304166 C CN 1304166C CN B2004100221104 A CNB2004100221104 A CN B2004100221104A CN 200410022110 A CN200410022110 A CN 200410022110A CN 1304166 C CN1304166 C CN 1304166C
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- involute
- circular arc
- diamond pen
- arc
- guiding mechanism
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Abstract
The present invention relates to a method and a trimmer for finishing grinding wheels on the basis of the involutes of a circular arc. The method comprises the steps that a dresser composed of a mechanism generating the circular arc movement of a diamond pen and an involute compensating mechanism is established, a reference element for measuring the radius of a circular arc is established, a dual-coordinate regulating mechanism for the center of the circular arc is shifted, and the circular arc generated by using the mechanism generating the circular arc movement of the diamond pen is used for generating the great outline of the involute; the involute compensating mechanism is used for automatic trimming dressing according to the difference values of the calculated involute and the circular arc at all toothed points; therefore, when the diamond pen makes a circular arc movement, the circular arc is compensated into an accurate involute, and the influence of the shape variation of the tip of the diamond pen on gear form precision is eliminated. The trimmer can be arranged on a large-sized hobbing machine for grinding outer gears and inner gears by a single tooth division method. The trimmer has the advantages of simple structure, convenient adjustment and low processing cost.
Description
Technical field
The invention belongs to gear working method and device in the mechanical manufacturing field.
Background technology
For large-scale hard flank of tooth precision gear, if adopt generating processing, a teeth groove wants tens ability of grinding to form, and production efficiency is very low.As the 4.5m Generating gear grinding machine of buying in recent years, about 5,000 ten thousand yuan of price, can only grind the gear of 1～2 4～5m every month.
If with forming process processing, the shape of emery wheel is with the same by roll flute wheel slot form, and therefore, teeth groove can once grind, and production efficiency will exceed many times.And the key technical problem of shaping roll flute is how to repair involute emery wheel accurately, just how with the problem of trimmer.
Existing method for trimming has the pattern method, numerical control method, approximatioss etc.In recent years, NC dresser is studied a lot, and, in the existing equipment numerical control involute dresser, foreign molded gear grinding machine product.But exist method for trimming the job insecurity phenomenon usually to occur, I pinpoint the problems out on the shape instability of Buddha's warrior attendant nib through research for many years.Existing various method for trimming supposes that all the Buddha's warrior attendant nib is an absolute point, and in fact, the Buddha's warrior attendant nib is in dressing process, and the radius of curvature on its top is ground greatly gradually, and, often occur bursting apart, the variation that diamond pen is known is 100 μ m levels, and precision of grinding teeth is 10 μ m levels, and promptly the noise ratio signal is big more than 10, these situations make the emery wheel that repairs often be the envelope of irregular nib.
Summary of the invention
The purpose of this invention is to provide that a kind of large-scale hard flank of tooth precision gear formation teeth-grinding uses, based on the involute grinding wheel dressing method and the trimmer of circular arc.On the molded gear grinding machine that it both can be used for, also can be contained on the large-scale gear hobbing machine; After rolling out gear, through quenching, on gear-hobbing machine, utilize monodentate indexing grinding worm then, it both can grind external gear, after trimmer is reequiped a little, also can grind internal gear.
Involute grinding wheel dressing method based on circular arc provided by the invention is such, promptly comprise mechanism and the involute compensation mechanism of setting up the circular motion of a pair of generation diamond pen, set up arc radius measuring basis spare, the two coordinate guiding mechanism of mobile center of arc, utilize macroscopical flank profil of the circular arc generation involute of the mechanism's generation that produces the diamond pen circular motion, according to the involute that calculates and circular arc difference at the profile of tooth each point, utilize the involute compensation mechanism to carry out automatic dressing, thereby make diamond pen when doing circular motion, constantly it is compensated for as accurate involute, has eliminated the influence of the pointed shape variation of diamond pen profile accuracy.
Utilize the cover of a columniform axle and the big 100 μ m of diameter to add two flat springs the above two are compressed, form generation circular arc mechanism.
According to calculating involute and circular arc difference at the profile of tooth each point, repair the profile of tooth of cylindrical shroud, thereby make diamond pen when doing circular motion, constantly it is compensated for as accurate involute.
Utilize left and right on the trimmer to revolve the abscissa value x that screw mandrel is adjusted two diamond pen pivots simultaneously, adopt slip gauge or micrometer as measurer.Utilize vertical screw mandrel to adjust the ordinate value y of two diamond pen pivots.
Utilize the step on the dwang, go out the radius of clean-up of Buddha's warrior attendant nib with miking.
Description of drawings
Fig. 1 for involute formed grinding wheel flank profil and with circular arc approach graph of a relation.
Fig. 2 utilizes circular arc to approach the error map of involute.
Fig. 3 produces mechanism and involute compensation mechanism method of work figure for circular arc.
Fig. 4 also produces mechanism and involute compensation mechanism method of work figure for circular arc, and it is the A-A cross section of Fig. 3.
Fig. 5 is the involute wheel dresser structure schematic diagram based on circular arc.
Fig. 6 also is the involute wheel dresser structure schematic diagram based on circular arc, and it is the B-B sectional view of Fig. 5.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 and Fig. 2 are the flank profil involute of formed grinding wheel and the relation of circular arc, and by the flank of tooth of the involute section grinding worm of emery wheel both sides, generally speaking, the tooth kerve of gear mills deeplyer, so the tooth item of emery wheel is not worked.But where necessary, the emery wheel tooth top also can be worked simultaneously.At first set up coordinate system oxy on emery wheel, then the coordinate array of the involute section on the emery wheel can be calculated, with (x
i, y
i) expression.At present, a variety of ready-made computational methods are arranged, as least square method, line-of-sight course etc. are used for calculating and approach the O of center of arc
1Coordinate (x, y) and arc radius r.Fig. 2 shows the error condition when circular arc approaches involute, and fine rule is an involute among the figure, and thick line is a circular arc.Usually circular arc passes involute three times, and its intersection point is respectively a, b and c.Theoretically, at this 3 point, approach circular arc and involute does not have error, and in disjoint different tooth depths position, all there is error delta in its each point
i, these error amounts can be calculated by existing software.
General roll flute involute error only has several microns, and the wear extent of Buddha's warrior attendant nib or burst apart etc., usually by tens to the hundreds of micron, therefore, the method that adopts two coordinate to move, even three method of moving of coordinate, the emery wheel profile of tooth that it repairs is the envelope of various nib capitiforms, comprising different prolongation involutes, involute, shorten the synthesis result of involute section, can not prove the stability of its precision theoretically.And the circular arc method for trimming is just different, no matter what situation the Buddha's warrior attendant nib is, always its is with the highest involute that a bit repairs, thereby has fundamentally solved the influence problem of diamond pen wearing and tearing to precision of grinding teeth.
The described two coordinate guiding mechanism that comprises mechanism, involute compensation mechanism and the mobile center of arc of the circular motion of a pair of generation diamond pen based on the involute dresser of circular arc; Fig. 3 and Fig. 4 are for producing the method for work and the structural representation of circular arc mechanism and involute compensation mechanism.It is made up of Bian row part: the cylindrical shroud that 1-cylindrical shaft, 2-are big slightly, and the 3-clamping leaf spring, the 4-diamond pen, the 5-lid, the 6-dwang, diamond pen just is fixed on the dwang.The front end of cylindrical shaft 1 is cut the plane of putting shell fragment 3, and a support point is left in the rear end, has also made the groove of cooling down on the both sides of support point, makes it have only support point to contact with the cam curve section of cylindrical shroud.By two spring leafs 3 axle 1 is pressed to cylindrical shroud 2, therefore, when forming cylindrical shroud 2, by the principle of 3 fixed circles, behind the rotation dwang 6, diamond pen tongue mark is macroscopical circular arc.According to statistics as can be known, circular arc approaches the error that causes and only arrives the twenty or thirty micron for several microns, therefore, makes to have one section cam curve in cylindrical shroud 2.Like this, mobile simultaneously by the support point of the cam impeller-hub 1 on the cylindrical shroud 2 when axle 1 rotates, finish compensation of error work.And axle 1 is pressed to cylindrical shroud 2 by spring leaf 3, keep both tight contacts.
Referring to Fig. 5 and Fig. 6, among the figure: 1～No. 6 part is introduced in front, and the 7-abscissa is adjusted nut, the 8-side plate, the left and right screw mandrel that revolves of 9-, the nut of 10-screw mandrel 9,11-clamps the screw of diamond pen, and 12-steady pin, 13-are repaiied the emery wheel handle, plate behind the 18-, the screw of the fixing back of 19-plate, the 20-ordinate is adjusted nut, the screw of 21-fixed side, the trimmer seat of the vertical guide rail of 22-band, 23-ordinate nut, 2-ordinate screw mandrel.
When adjusting, with hand rotating nut 7 (Fig. 5), through screw mandrel 9, travelling nut 10, as seen from Figure 6, the cylindrical shroud 2 that produces circular arc mechanism is welded in above the nut 10, so the diamond pen center of rotation laterally moves, measure F with micrometer or slip gauge, just can access abscissa value x; Rotating nut 20 drives back plates 18 by screw mandrel 24, and body 17 is adjusted ordinate value y, the allowance of grinding lower grinding wheel gradually, unclamp screw 14 after, by between miking Buddha's warrior attendant nib and standard step apart from N, can access diamond pen radius of gyration r value.
When roll flute, make handle 13 swings by hand, through trace 15, linkage pin 14 makes two dwangs 6 rotate simultaneously, and two diamond pens rotate around center separately, repair two involute flanks of emery wheel simultaneously.
Claims (3)
1. involute grinding wheel dressing method based on circular arc, it is characterized in that: comprise the trimmer that foundation is made of the mechanism and the involute compensation mechanism of a pair of generation diamond pen circular motion, set up arc radius measuring basis spare, the two coordinate guiding mechanism of mobile center of arc, utilize macroscopical flank profil of the circular arc generation involute of the mechanism's generation that produces the diamond pen circular motion, according to the involute that calculates and circular arc difference at the profile of tooth each point, utilize the cylindrical shroud in the involute compensation mechanism to carry out the error finishing, make diamond pen when doing circular motion, constantly it is compensated for as accurate involute, has eliminated the influence of the pointed shape variation of diamond pen profile accuracy.
2. the involute grinding wheel dressing method based on circular arc according to claim 1, it is characterized in that: utilize micrometer or slip gauge as measurer, adjust the abscissa value x of two diamond pen pivots and the ordinate value y of two diamond pen pivots of adjustment simultaneously at the two coordinate guiding mechanism of mobile center of arc: utilize the step on the dwang that diamond pen is installed, with the distance between miking Buddha's warrior attendant nib and step, measure the radius of gyration of adjusting diamond pen indirectly.
3. the trimmer based on the involute grinding wheel dressing method of circular arc is characterized in that: the two coordinate guiding mechanism that comprises mechanism and the involute compensation mechanism and the mobile center of arc of the circular motion of a pair of generation diamond pen; Wherein, the mechanism and the involute compensation mechanism that produce the diamond pen circular motion comprise cylindrical shaft (1), big slightly cylindrical shroud (2), diamond pen (4), dwang (6), diamond pen is fixed on the dwang upper end, dwang is fixed on the top of cylindrical shaft (1), the bottom of described dwang is installed in trace (15): the front end that is positioned at the cylindrical shaft of cylindrical shroud (2) is cut the plane of putting shell fragment 3, a support point is left in the rear end, groove is made to cool down in both sides at support point, make it have only support point to contact, and axle (1) is pressed to cylindrical shroud (2) by spring leaf (3) with the cam curve of cylindrical shroud; The two coordinate guiding mechanism comprises lateral coordinates guiding mechanism and along slope coordinate guiding mechanism; Described cylindrical shroud (2) is installed in left and right revolving respectively by nut (10) and constitutes the lateral coordinates guiding mechanism on the screw mandrel, described lateral coordinates guiding mechanism is installed on the body (17), and body is installed in ordinate screw mandrel (24) by back plate (18) and upward constitutes the along slope coordinate guiding mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100221104A CN1304166C (en) | 2004-03-23 | 2004-03-23 | Method for finishing grinding wheel based on involute of arc and dresser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100221104A CN1304166C (en) | 2004-03-23 | 2004-03-23 | Method for finishing grinding wheel based on involute of arc and dresser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1562567A CN1562567A (en) | 2005-01-12 |
| CN1304166C true CN1304166C (en) | 2007-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100221104A Expired - Fee Related CN1304166C (en) | 2004-03-23 | 2004-03-23 | Method for finishing grinding wheel based on involute of arc and dresser |
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| CN (1) | CN1304166C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100562403C (en) * | 2008-09-13 | 2009-11-25 | 东方电气集团东方汽轮机有限公司 | The modification method of error of knife tool integral relief grinding emery cutter line and device |
| CN102107301A (en) * | 2011-01-12 | 2011-06-29 | 王天甜 | Process technique for processing spline tooth profiles through replacing involutes with circular arcs |
| CN103286686B (en) * | 2013-06-04 | 2015-10-07 | 南京工业大学 | The non-linear wear-compensating system and method for numerical control formation teeth-grinding emery wheel |
| CN106392200A (en) * | 2016-09-22 | 2017-02-15 | 重庆大学 | Composite shape correction method for tooth contour of cycloidal gear of RV reducer |
| CN109834553B (en) * | 2019-03-25 | 2020-02-18 | 上海理工大学 | Precision grinding method for surface of micro-groove structure |
| CN114682859B (en) * | 2022-05-07 | 2023-11-10 | 南京二机齿轮机床有限公司 | Processing method and processing device for compensating inclination deviation of tooth profile of worm grinding wheel gear grinding machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1198622A (en) * | 1966-05-06 | 1970-07-15 | Coventry Gauge & Tool Co Ltd | Means for Describing Involute and Similar Curves more particularly for Grinding Wheel Dressing or Trueing Purposes. |
| CN86207936U (en) * | 1986-10-25 | 1987-09-23 | 西安交通大学 | Machine-tool controlled profile grinding wheel-truing device |
| DE3640014A1 (en) * | 1986-11-24 | 1988-06-01 | Klink Gmbh Arthur | Method and apparatus for dressing grinding wheels to approximate involute profiles and involute-like profiles |
-
2004
- 2004-03-23 CN CNB2004100221104A patent/CN1304166C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1198622A (en) * | 1966-05-06 | 1970-07-15 | Coventry Gauge & Tool Co Ltd | Means for Describing Involute and Similar Curves more particularly for Grinding Wheel Dressing or Trueing Purposes. |
| CN86207936U (en) * | 1986-10-25 | 1987-09-23 | 西安交通大学 | Machine-tool controlled profile grinding wheel-truing device |
| DE3640014A1 (en) * | 1986-11-24 | 1988-06-01 | Klink Gmbh Arthur | Method and apparatus for dressing grinding wheels to approximate involute profiles and involute-like profiles |
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| CN1562567A (en) | 2005-01-12 |
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