CN101457826A - Traveling wave reduction gearing mechanism - Google Patents
Traveling wave reduction gearing mechanism Download PDFInfo
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- CN101457826A CN101457826A CNA2008101636818A CN200810163681A CN101457826A CN 101457826 A CN101457826 A CN 101457826A CN A2008101636818 A CNA2008101636818 A CN A2008101636818A CN 200810163681 A CN200810163681 A CN 200810163681A CN 101457826 A CN101457826 A CN 101457826A
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- input shaft
- output shaft
- elastic strain
- roller
- strain layer
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Abstract
The invention discloses a travelling wave deceleration and driving mechanism, which comprises an input shaft (1) and an output shaft (5) that are both connected with a frame (3), axes of the input shaft (1) and axes of the output shaft (5) are on the same line; an elastic strained layer (4) is arranged between the input shaft (1) and the output shaft (5), and the periphery of the elastic strained layer (4) is fixed to the frame (3); a plurality of rollers (8) are arranged between the input shaft (1) and the elastic strained layer (4), the input shaft (1) has a groove which matches the roller (8) on the end face, and the rollers (8) are uniformly distributed along the circumferencial direction of the interface of the input shaft (1); the input shaft (1) and the output shaft (5) are compressed through the frame (3); the interface between the elastic strained layer (4) and the roller (8) is a smooth surface, and the interface between the elastic strained layer (4) and the output shaft (5) is a rough surface. By adopting the structure above, the structure is simple and has low manufacturing cost for many parts of gearing-down are omitted.
Description
Technical field
The present invention relates to a kind of driving mechanism, specifically is a kind of traveling wave reduction gearing mechanism that is widely used in fields such as mine, metallurgy, mechano-electronic, oil transportation.
Background technique
Be used for the mechanism of transferring power and motion at present, the application area of reducing gear is quite extensive.Almost in the transmission system of various machinery, can see its trace, boats and ships, automobile, locomotive from the traffic tool, heavy facility for building, machining machine and tool that mechanical industry is used and automated production equipment, common household electrical appliances in the daily life, clock and watch or the like, it uses the transmission work from big power, to little load, accurate angle transmission can be seen the application of reducing gear.And on commercial Application, reducing gear has deceleration and increases the torque function, therefore is widely used in the conversion equipment of speed and moment of torsion.The rate conversion of existing reducing gear general using gear decelerates to desired winding number with the winding number of motor.But this reduction gearing mechanism has following shortcoming: its structure more complicated, comprised gears at different levels, so manufacture cost is also higher.
Summary of the invention
Technical problem to be solved by this invention is, a kind of traveling wave reduction gearing mechanism of simple in structure, low cost of manufacture is provided.
For solving the problems of the technologies described above, traveling wave reduction gearing mechanism of the present invention, comprise input shaft, output shaft, described input shaft all is connected with support with output shaft, the axis of described input shaft and the axis of output shaft are on same straight line, be provided with the elastic strain layer between input shaft and the output shaft, the periphery and the support of described elastic strain layer are fixed; Be provided with several rollers between input shaft and elastic strain layer, the groove that matches with roller is arranged on the end face of input shaft, described roller evenly distributes along the surface of contact circumferencial direction of input shaft; Described input shaft and output shaft compress by support; The surface of contact of described elastic strain layer and roller is a smooth surface, with the surface of contact of output shaft be roughened surface.
After adopting above structure, compared with prior art, the present invention has following advantage:
At first, be the generation of machinery row ripple: the roller on the input shaft is in the process that the elastic strain layer is pushed, thereby make the elastic strain layer produce strain and produce vibration up and down, simultaneously, whole input shaft drives roller and rotates, even above-mentioned said vibration has had moving of plane, therefore the both side surface at the elastic strain layer has formed mechanical capable ripple.
Secondly, be the transmission of row ripple: do the motion of elliptical path by the elastic strain laminar surface particle of row ripple initiation.Because the surface of contact of elastic strain layer and roller is smooth, be that friction factor is little, coarse with the surface of contact of output shaft, be that friction factor is big, therefore at the crest place of elastic strain layer elliptical trajectory, elastic strain layer particle and output shaft contacting point produce frictional force, thereby produce driving force (moment), promote output shaft and rotate.
Then, be the realization of gearing down: roller evenly distributes along the surface of contact circumferencial direction of input shaft, the section of elastic strain layer is the periodic dimple shape, can push simultaneously with one or several rollers in the elastic strain layer in each corrugated cycle, and above-mentioned several rollers are called one group of roller.In each group roller, the extrusion and vibration of single roller and elastic strain layer is periodic, and then the periodic vibration of every group of roller will superpose, and can form a synthetic capable ripple.Clearly, the elastic profile layer of the roller of varying number and different cycles can form the synthetic capable ripple of different cycles and amplitude.Within the specific limits, angular velocity, amplitude, the basic thickness of elastic strain layer proportional and roller quantity, wavelength, the strained layer effective radius of the movement velocity of the elliptical path of elastic strain layer roughened surface particle and row ripple are inverse ratio.Regulate above-mentioned parameter, then can regulate row velocity of wave propagation, frequency and amplitude are regulated the output shaft rotating speed thus, thereby reach the purpose of gearing down.
Owing to omitted the many component in the gear reduction transmission, therefore simple in structure, low cost of manufacture.
The end face of described input shaft and output shaft is conical surface, and corresponding elastic strain layer also is conical; Described roller is coniform.Adopt conical contact surface, can simplified structure, reach gearing down effect better.
Described input shaft and output shaft compress by support, be meant that input shaft and output shaft respectively are provided with step surface, each drive fit has pressure ring on described input shaft and the output shaft, the end face and the step surface of pressure ring are close to, an end face of another end face and thrust-bearing is close to, and another end face and the support of thrust-bearing are close to.The material of described elastic strain layer is 40CrNi or 30CrMnSi or nylon 66 or Kapp human relations V or polyoxymethylene or acetal resin.After adopting above structure, as long as bearings at both ends is compressed, just can make between input shaft, elastic strain layer, the output shaft and produce pretightening force, structure is simpler, and versatility is stronger.
Description of drawings
Shown in Figure 1 is the structural representation of traveling wave reduction gearing mechanism of the present invention;
Shown in Figure 2 is the movement locus analysis schematic representation of the present invention's row ripple particle;
Shown in Figure 3 is traveling wave reduction gearing mechanism partial schematic sectional view of the present invention;
Shown in Figure 4 is the partial schematic sectional view that traveling wave reduction gearing mechanism of the present invention changes roller quantity;
Shown in Figure 5 is the partial schematic sectional view that traveling wave reduction gearing mechanism of the present invention changes roller quantity.
Wherein, 1, input shaft; 2, step surface; 3, support; 4, elastic strain layer; 5, output shaft; 6, thrust-bearing; 7, pressure ring; 8, roller; A, particle; B, particle; C, particle; The moving direction of F, output shaft; The direction of extrusion of Fc, roller; The moving direction of Va, particle a; The horizontal motion direction of Vax, particle a; The vertical motion direction of Vay, particle a; The moving direction of Vb, particle b; The moving direction of Vc, particle c; The horizontal motion direction of Vcx, particle c; The vertical motion direction of Vcy, particle c.
Embodiment
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
By the structural representation of traveling wave reduction gearing mechanism of the present invention shown in Figure 1 as can be known, comprise input shaft 1, output shaft 5, described input shaft 1 all is connected with support 3 with output shaft 5, the axis of the axis of described input shaft 1 and output shaft 5 is on same straight line, be provided with elastic strain layer 4 between input shaft 1 and the output shaft 5, the periphery of described elastic strain layer 4 and support 3 are fixing.Be provided with several rollers 8 between input shaft 1 and elastic strain layer 4, the groove that matches with roller 8 is arranged on the end face of input shaft 1, described roller 8 evenly distributes along the surface of contact circumferencial direction of input shaft 1.Described input shaft 1 compresses by support 3 with output shaft 5, be that described input shaft 1 compresses by support 3 with output shaft 5, be meant that input shaft 1 and output shaft 5 respectively are provided with step surface 2, each drive fit has pressure ring 7 on described input shaft 1 and the output shaft 5, the end face and the step surface 2 of pressure ring 7 are close to, an end face of another end face and thrust-bearing 6 is close to, and another end face and the support 3 of thrust-bearing 6 are close to.Pretightening force be applied with a lot of kind methods, apply as the mechanism that can design adjusting color screw, do not make detailed presentations here.Described elastic strain layer 4 is smooth with the surface of contact of roller 8, and is coarse with the surface of contact of output shaft 5.The end face of described input shaft 1 and output shaft 5 is conical surface, and corresponding elastic strain layer 4 also is conical; Described roller 8 is coniform.The material of described elastic strain layer 4 is 40CrNi or 30CrMnSi or nylon 66 or Kapp human relations V or elastomeric metal such as polyoxymethylene or acetal resin or nonmetal, when elastic strain layer 4 meeting attenuation after fretting wear, this moment is under the effect of support elasticity pretightening force, input shaft 1 and output shaft 5 are compressed once more, carry out gearing down once more.
On the contrary, when described output shaft 5 during,, therefore can realize the function of input shaft 1 stall self-locking because the big frictional force action of elastic strain layer 4 and output shaft 5 can't pass to input shaft 1 to rotation as power intake.
Movement locus by the present invention's row ripple particle shown in Figure 2 is analyzed schematic representation as can be known, roller on the input shaft is pushing the elastic strain layer in the process of Fc, thereby make the elastic strain layer produce strain and produce vibration up and down, roller is equally distributed along the surface of contact circumferencial direction of input shaft, so this vibration is periodic, promptly particle (a, b, the c) movement locus on the side surface that contacts with output shaft of elastic strain layer is the waveform of up-down vibration.Simultaneously, whole input shaft drives roller and rotates, and makes above-mentioned said vibration that moving of plane arranged, and therefore the both side surface at the elastic strain layer has formed mechanical capable ripple, and the movement locus of each particle (a, b, c) is oval like this.Moving direction from each particle, the moving direction of particle a can be decomposed into substantially horizontal Vax and Vertical direction Vay, particle b is owing on the top of ellipse, have only the horizontal motion direction of a Vb, and the moving direction of particle c can be decomposed into substantially horizontal Vcx and Vertical direction Vcy.The horizontal motion direction of each particle is same direction like this, and the superimposed motion of each particle makes the elastic strain layer that the movement tendency of a direction arranged like this.According to the principle of active force and reaction force, the periphery of adding the elastic strain layer is fixed by support, therefore has the output shaft of big friction factor that reciprocal movement tendency F has just been arranged with the elastic strain layer, thereby makes output shaft obtain the power of a rotation.
By traveling wave reduction gearing mechanism partial schematic sectional view of the present invention shown in Figure 3 as can be known, roller 8 evenly distributes along the surface of contact circumferencial direction of input shaft 1, the section of elastic strain layer 4 is the periodic dimple shape, can push simultaneously with one or several rollers 8 in the elastic strain layer in each corrugated cycle, above-mentioned several rollers 8 are called one group of roller.In each group roller, the extrusion and vibration of single roller 8 and elastic strain layer 4 is periodic, and then the periodic vibration of every group of roller will superpose, and can form a synthetic capable ripple.Clearly, the roller 8 of varying number and the elastic profile layer 4 of different cycles can form the synthetic capable ripple of different cycles and amplitude.Within the specific limits, angular velocity, amplitude, the basic thickness of elastic strain layer proportional and roller 8 quantity, wavelength, the strained layer effective radius of the movement velocity of the elliptical path of elastic strain layer 4 roughened surface particle and row ripple are inverse ratio.Regulate above-mentioned parameter, then can regulate row velocity of wave propagation, frequency and amplitude are regulated the output shaft rotating speed thus, thereby reach the purpose of gearing down.
The partial schematic sectional view that changes roller quantity by Fig. 4, traveling wave reduction gearing mechanism of the present invention shown in Figure 5 as can be known, the quantity that roller 8 distributes is few more, the interval that is the ripple on the elastic strain layer 4 is big more, that is to say that the frequency of vibration is more little, and input shaft 1 is big more with the velocity ratio of output shaft 5 like this; Otherwise velocity ratio is more little.Therefore, change the quantity that roller 8 distributes, just can change capable velocity of wave propagation, frequency and amplitude, change the rotating speed of output shaft thus, thereby reach the purpose of decelerations at different levels.
Traveling wave reduction gearing mechanism of the present invention is not limited to above-described structure, described input shaft 1 can also be cylindrical with the surface of contact of output shaft 5 and elastic strain layer 4, the structure of this moment is just for being embedded with equally distributed roller 8 on the outer peripheral surface of input shaft 1, the outside is glued with the elastic strain layer 4 of cylindrical indent, is glued with the output shaft 5 of cylindrical indent more outside;
Described input shaft 1 can also be the plane with the surface of contact of output shaft 5 and elastic strain layer 4, promptly be the end face contact, the structure of this moment just for being embedded with equally distributed roller 8 on the end face of input shaft 1, then is close to the elastic strain layer 4 on plane, is close to the end face of the output shaft 5 on plane again.
More than these variations all fall within the protection domain of traveling wave reduction gearing mechanism of the present invention.
Claims (4)
1, a kind of traveling wave reduction gearing mechanism, comprise input shaft (1), output shaft (5), described input shaft (1) all is connected with support (3) with output shaft (5), it is characterized in that: the axis of the axis of described input shaft (1) and output shaft (5) is on same straight line, be provided with elastic strain layer (4) between input shaft (1) and the output shaft (5), the periphery of described elastic strain layer (4) and support (3) are fixing; Be provided with several rollers (8) between input shaft (1) and elastic strain layer (4), the groove that matches with roller (8) is arranged on the end face of input shaft (1), described roller (8) evenly distributes along the surface of contact circumferencial direction of input shaft (1); Described input shaft (1) compresses by support (3) with output shaft (5); The surface of contact of described elastic strain layer (4) and roller (8) is a smooth surface, with the surface of contact of output shaft (5) be roughened surface.
2, traveling wave reduction gearing mechanism according to claim 1 is characterized in that: the end face of described input shaft (1) and output shaft (5) is conical surface, and corresponding elastic strain layer (4) also is conical; Described roller (8) is coniform.
3, traveling wave reduction gearing mechanism according to claim 1, it is characterized in that: described input shaft (1) compresses by support (3) with output shaft (5), be meant that input shaft (1) and output shaft (5) respectively are provided with step surface (2), described input shaft (1) is gone up each drive fit with output shaft (5) pressure ring (7), the end face and the step surface (2) of pressure ring (7) are close to, an end face of another end face and thrust-bearing (6) is close to, and another end face of thrust-bearing (6) and support (3) are close to.
4, traveling wave reduction gearing mechanism according to claim 1 is characterized in that: the material of described elastic strain layer (4) is 40CrNi or 30CrMnSi or nylon 66 or Kapp human relations V or polyoxymethylene or acetal resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101636818A CN101457826B (en) | 2008-12-19 | 2008-12-19 | Traveling wave reduction gearing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101636818A CN101457826B (en) | 2008-12-19 | 2008-12-19 | Traveling wave reduction gearing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101457826A true CN101457826A (en) | 2009-06-17 |
| CN101457826B CN101457826B (en) | 2010-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101636818A Expired - Fee Related CN101457826B (en) | 2008-12-19 | 2008-12-19 | Traveling wave reduction gearing mechanism |
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| CN (1) | CN101457826B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603932A (en) * | 2013-11-26 | 2014-02-26 | 燕山大学 | Real-time anti-backlash variable-radius corrugated-toothed reducer |
-
2008
- 2008-12-19 CN CN2008101636818A patent/CN101457826B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603932A (en) * | 2013-11-26 | 2014-02-26 | 燕山大学 | Real-time anti-backlash variable-radius corrugated-toothed reducer |
| CN103603932B (en) * | 2013-11-26 | 2016-03-02 | 燕山大学 | One disappears gap diameter reducing type ripple tooth retarder in real time |
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| Publication number | Publication date |
|---|---|
| CN101457826B (en) | 2010-09-29 |
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Granted publication date: 20100929 Termination date: 20121219 |