CN85102760A - The electrochemical trimming of harmonic gear - Google Patents
The electrochemical trimming of harmonic gear Download PDFInfo
- Publication number
- CN85102760A CN85102760A CN 85102760 CN85102760A CN85102760A CN 85102760 A CN85102760 A CN 85102760A CN 85102760 CN85102760 CN 85102760 CN 85102760 A CN85102760 A CN 85102760A CN 85102760 A CN85102760 A CN 85102760A
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- China
- Prior art keywords
- tooth
- gear
- correction
- flank
- harmonic gear
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Abstract
This process using electrolytic polishing principle carries out axial modification, profile modification to harmonic gear.With a tabular hollow cathode, make gear (flexbile gear or steel wheel) tooth produce the selectivity anode dissolution, reach needed correction of the flank shape shape.When adopting tabular hollow cathode (or workpiece) rotation, best results.
Through the harmonic gear of correction of the flank shape, flank of tooth smooth finish can improve 1～2 grade, reduces and interferes.Can improve transmission efficiency 5%～10%.
Description
Belong to the Gear Processing field.
Harmonic Gears, because it has simple in structurely, in light weight, gear range is big, characteristics such as supporting capacity height progressively are applied.But one of subject matter that exists is that transmission efficiency is low at present.Its reason has two aspects, and when flexbile gear deformed under the producer effect on the one hand, the deflection of tooth was inconsistent.Learn according to harmonic gear meter mark data and experiment conclusion.The tooth that deflection is little is prone to tooth top interferes.Transmission efficiency is reduced.
The secondth, owing to adopted approximate profile of tooth.More generally adopt at present the approximate profile of tooth of involute profile as Harmonic Gears.Tooth error also makes Harmonic Gears interfere.Burr that produces in the mechanical workout or the like factor has all been aggravated the wearing and tearing of tooth in addition.
Still can not realize both at home and abroad at present the harmonic gear tooth is carried out correction of the flank shape.Just adopt the means of strengthening running-in, sufficient lubrication to solve.But effect is also not obvious, and to the gear of 7～8 class precisions commonly used, transmission efficiency also has only between 75%～80%.Thereby limited its use.
1, electrolytic polishing principle is used for gear modification.Flexbile gear (or steel wheel or simultaneously to flexbile gear, steel wheel) is carried out axial modification (accomplishing cydariform), tooth top tip relief.Fig. 1, Fig. 2, Fig. 3 are respectively profile of tooth direction, the teeth directional direction of flexbile gear tooth in the Harmonic Gears, the partial view of tooth top direction.Solid line is a shape before the correction of the flank shape, and dotted line is shape after the correction of the flank shape (having done exaggerative processing among the figure).Purpose is to avoid tooth top to interfere, and makes tooth load even.
2, adopt electrolytic polishing principle to remove the burr that mechanical workout produces, improve flank of tooth smooth finish.Purpose is to reduce frictional coefficient, reduces wear, improves transmission efficiency.
With the correction of the flank shape of harmonic gear flexbile gear is example.
Fig. 4 is the setting drawing of flexbile gear correction of the flank shape.With the corresponding installation one tabular hollow cathode 10 in tooth position (13 indication positions among the figure) on the flexbile gear 6, ring inner surface and soft tooth top are at a distance of 5～8 millimeters, and ring is high to be equated with the facewidth.Can weld with thick 1～2 millimeter stainless steel plate.Also can adopt lathe turning to form, flexbile gear connects dc power anode by axle 7, bearing 5, copper sheet 4.Tabular hollow cathode 10 connects dc power cathode by stainless steel conductive pole 1.Then this device is placed on 50%H
2SO
4, 50%H
3PO
4Electropolishing in the solution.Fig. 5 a is electric force lines distribution figure between the corresponding tabular hollow cathode of teeth directional direction flexbile gear tooth.Fig. 5 b is the electric force lines distribution figure (Fig. 5 a and b are recorded by the electric field simulation experiment) of profile of tooth direction.As shown in Figure 5, tooth two ends power line is more intensive than the middle part, and the tooth top power line is more intensive than the flank of tooth.According to the anode dissolution principle, the close utmost point of power line place, removal speed is fast.Thereby can form the shape of dotted line among Fig. 5.Be heated to 65 ℃～75 ℃ at electrolytic solution, current density be 50 amperes/(decimetre)
2, after about 3～5 minutes of time, can obtain to polish preferably the correction of the flank shape effect.Like this, the burr after the mechanical workout can all be removed totally.
For the error in geometrical form that prevents tabular hollow cathode influences the correction of the flank shape precision, can make rotary type by Fig. 4 device.The rotating speed revolution that flexbile gear changes with per minute 10～15 by axle 7 bearings, 5 usefulness motors (or passing through speed reduction unit).2 are location, insulcrete among the figure, and the useable glass steel is done.8 is hold-down nut.Flexbile gear compresses by nut 9.11 is sealing plate, in case solution enters the flexbile gear inner chamber.12 be sealing plate thrust screw.14 is insulation layer, and the useable glass silk braid is contained on the conductive pole.
Effect
1, can make flank of tooth fineness improve 1～2 grade. Remove mechanical machined burrs.
2, teeth directional can be accomplished " drum " shape, and tooth top can tip relief.Profiling quantity can be controlled with hollow cathode shape (for example adopting garden cylindricality or taper) and pole clearance.
3, transmission efficiency can improve 5～10%.
Claims (2)
1, harmonic gear electrolytic polishing principle correction of the flank shape is characterized in that adopting tabular hollow cathode.
2, the electropolishing correction of the flank shape of harmonic gear as claimed in claim 1 is characterized in that adopting workpiece (or negative electrode) rotation mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85102760A CN85102760B (en) | 1985-04-01 | 1985-04-01 | Electrochemical trimming of harmonic gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85102760A CN85102760B (en) | 1985-04-01 | 1985-04-01 | Electrochemical trimming of harmonic gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85102760A true CN85102760A (en) | 1986-08-06 |
| CN85102760B CN85102760B (en) | 1988-08-24 |
Family
ID=4792737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85102760A Expired CN85102760B (en) | 1985-04-01 | 1985-04-01 | Electrochemical trimming of harmonic gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85102760B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102371680A (en) * | 2010-08-19 | 2012-03-14 | 索尼公司 | Three-dimensional modeling apparatus, object, and method of manufacturing an object |
| CN103014825A (en) * | 2012-12-11 | 2013-04-03 | 傅本友 | Method for reducing or removing suspended copper at orifices |
-
1985
- 1985-04-01 CN CN85102760A patent/CN85102760B/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102371680A (en) * | 2010-08-19 | 2012-03-14 | 索尼公司 | Three-dimensional modeling apparatus, object, and method of manufacturing an object |
| CN102371680B (en) * | 2010-08-19 | 2016-05-11 | 索尼公司 | The method of three-dimensional modeling apparatus, object and manufacture object |
| US10022911B2 (en) | 2010-08-19 | 2018-07-17 | Sony Corporation | Three-dimensional modeling apparatus, object, and method of manufacturing an object |
| US11203149B2 (en) | 2010-08-19 | 2021-12-21 | Sony Corporation | Three-dimensional modeling apparatus, object, and method of manufacturing an object |
| CN103014825A (en) * | 2012-12-11 | 2013-04-03 | 傅本友 | Method for reducing or removing suspended copper at orifices |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85102760B (en) | 1988-08-24 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |