CN2442447Y - Voltage equalizing traveling-wave supersonic motor - Google Patents
Voltage equalizing traveling-wave supersonic motor Download PDFInfo
- Publication number
- CN2442447Y CN2442447Y CN 00221757 CN00221757U CN2442447Y CN 2442447 Y CN2442447 Y CN 2442447Y CN 00221757 CN00221757 CN 00221757 CN 00221757 U CN00221757 U CN 00221757U CN 2442447 Y CN2442447 Y CN 2442447Y
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- rotor
- traveling
- motor
- supersonic motor
- vibration damping
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Abstract
The utility model relates to a traveling-wave type supersonic motor with a uniform voltage, which is an improved ultrasonic motor. A vibration damping layer is arranged between a rotor and the fixing surface of a shaft. The rotor, the shaft and the vibration damping layer are fixed together by screws. The vibration damping layer is made of silicon rubber. A washer with changeable thickness is arranged between the upper surface of the fixing surface of the shaft and the inner side of an upper end cover. The utility model has the advantages of large torque, no noise and low temperature rise.
Description
The utility model is a kind of follow-on row ultrasonic waveform motor of all pressing, and belongs to the technical field that supersonic motor is made.
Supersonic motor (Ultrasonic Motor is called for short USM) is a kind of inverse piezoelectric effect excitation ultrasound vibration of applying piezoelectric ceramic, and by the friction coupling, electric energy is converted to the novel direct drive motors of mechanical energy output.Supersonic motor is different with traditional motor, does not have magnetic pole and winding, need not produce motoricity by electromagnetic action.In traditional servo motor driving system, for obtaining the characteristic of the desired low speed high torque of control system, must use reduction gearing mechanism, this has not only increased the complexity and the weight of mechanical part, and reduction gearing all is inevitable to the recoil effect of drive system, to the enlarge-effect of the amount of feeding and to the influence of the compliance of drive controlling, seriously hindered the raising of control system rapidity and accuracy, thereby Traveling Ultrasonic Motor replaces the application of electromagnetic motor in the Noncontinuous control field that broad application prospect is arranged.
From the patent of existing Traveling Ultrasonic Motor product and application, supersonic motor generally is made up of vibrating body and moving body.Wherein vibrating body is equivalent to the stator of conventional motors, is made by piezoelectric ceramic and metallic elastic material, and the metallic elastic material comprises the butterfly spring, and moving body is equivalent to the rotor in the conventional motors, is made by friction material and aluminum metal etc.When on the piezoelectric ceramic vibrator of vibrating body, adding the high frequency alternating voltage, utilize the inverse piezoelectric effect of piezoelectric ceramic to produce the ultrasonic vibration of tens KHz, this vibration by the coupling of the friction between vibrating body and the moving body, is transformed into the rotation or the rectilinear motion of moving body.Theoretically, supersonic motor is compared with traditional electromagnetic type electrical micro-machine, and its outstanding advantage shows: low speed high torque, compact conformation, control performance is good, dynamic response time is fast, no electromagnetic interference, noiseless.But present Traveling Ultrasonic Motor product is because the influence of uncertain other factors such as parts machine work precision in its structure and assembly technology makes that the output torque of supersonic motor is little, efficient is low, operation has noise, electric machine temperature rise height.Especially large diameter Traveling Ultrasonic Motor, if prolong structure with other minor diameter Traveling Ultrasonic Motor, then the machining accuracy of butterfly spring with regulate the stable operation of the method that is added in the normal pressure on the motor by the degree of tightness of butterfly spring decisive influence arranged large diameter supersonic motor, increased the uncertainty of supersonic motor output torque size, operation has noise, simultaneously, because the major diameter Traveling Ultrasonic Motor is fixed, pressure between rotor, frictional force, the increase of wearing and tearing, if adopt the method for designing of the slim rotor of existing Traveling Ultrasonic Motor, the effect of friction can make fixed, rotor temperature rise is fast, thereby postpone the process of supersonic motor industrialization, influence the extensive use of supersonic motor in the electrical micro-machine field.
The purpose of this utility model just provides and a kind ofly exports that torque is big, the equal die mould Traveling Ultrasonic Motor of major diameter of noiselessness, low temperature rise.
Voltage equalizing traveling-wave supersonic motor of the present utility model is a kind of follow-on supersonic motor, this voltage equalizing traveling-wave supersonic motor is made up of upper end cover, bottom end cover, rotor, stator, bearing, axle, between the stationary plane of rotor and axle, be provided with one deck vibration damping layer, and rotor, axle, vibration damping layer be fixed as one by screw.The vibration damping layer adopts silicon rubber.Between the inboard of plane and upper end cover on the stationary plane of axle, be provided with the pad that to change its thickness.This motor has torque big, the advantage of noiselessness, low temperature rise.
Advantage of the present utility model is to compare with existing similar supersonic motor, have compact conformation, pressure is easy to adjust, shock-absorbing effect is good, output torque is big, noiseless, the low advantage of temperature rise, because its special construction, the thickness of regulating pad (3) just can make the suitable pressure of acquisition between stator and rotor, and the size adjustment of visible pressure can obtain easily.The pressure of general Traveling Ultrasonic Motor then is that the tightness of regulating butterfly spring realizes that its pressure distribution is inhomogeneous, will be to the absorption of extensional vibration by elastomeric transmission, thereby vertical shock-absorbing effect is poor, rotary speed unstabilization has noise sometimes.And the pressure between rotor of the present utility model is to apply pressure to rotor top by the thickness of regulating pad, pressure distribution is even, directly utilize the elasticity and the silicon rubber of rotor itself to absorb extensional vibration, need not the transmission of power, to the good absorbing effect of extensional vibration, make rotating speed steady, can obtain bigger output torque, noiseless during the motor operation, temperature rise is low.
Voltage equalizing traveling-wave supersonic motor elastomer in the utility model is different from general capable ultrasonic waveform motor, it does not have butterfly spring, so not only optimized the structure of supersonic motor, make structure seem compacter, and removed butterfly spring processing technology (butterfly spring processing technology more complicated) and the caused error of assembly technology, make the motor among the present invention can obtain bigger output torque.
Rotor in the utility model than general Traveling Ultrasonic Motor thin, rotor is light, reach 7mm apart from the thickness, center, supersonic motor not only utilizes the elasticity of rotor itself, the normal pressure that applies is evenly distributed, the operation process rotor is not yielding, and utilizes silicon rubber to absorb the extensional vibration of rotor, and the revolutional slip of motor is remained unchanged, output torque increases, and noise reduces.Because the heat that the friction between the rotor of major diameter Traveling Ultrasonic Motor, wearing and tearing produce so utilize thick rotor directly to absorb heat, dispel the heat in the utility model, makes electric machine temperature rise very low greater than the minor diameter Traveling Ultrasonic Motor.
Fig. 1 is a structural representation of the present utility model, and upper end cover 1, axle 2, stationary plane 21, pad 3, vibration damping layer 4, screw 5, rotor 6, stator 7, bottom end cover 8, screw 9, bearing 10, piezoelectric ceramic 11, friction material 12 are wherein arranged.
Embodiment of the present utility model is as follows:
Vibration damping layer 4 adopts silicon rubber between the stationary plane 21 of rotor 6 and axle 2, and the three is fixed as one by screw 5, piezoelectric ceramic 11 is pressed the performance requirement of P42 material, be attached to the no flank of tooth of stator 7 by bonding agent, when giving the piezoelectric element input stimulus, stator surface produces corresponding row ripple, friction material 12 sticks on the lower surface of rotor 6 or the geared surface of stator 7 by bonding agent, make stator under the row ripple effect of surface, produce the moment of friction that promotes the rotor running, difference rigid bearing 10 in upper end cover 1 and bottom end cover 8, axle 2 is fixed on the bearing, with upper end cover, bottom end cover is fixing by screw 9.In the present embodiment, the external diameter of stator is 100mm, internal diameter 30mm, and thick 3.3mm, tooth depth 3mm, rotor diameter 97mm, internal diameter 14mm, stalling torque 15Kg.cm, self-locking moment are greater than 15Kg.cm, and rotating speed 40rpm need not deceleration device, can directly drive load.
According to the above, just can realize the utility model.
Claims (3)
1. voltage equalizing traveling-wave supersonic motor, formed by upper end cover (1), bottom end cover (8), rotor (6), stator (7), bearing (10), axle (2), it is characterized in that between the stationary plane (21) of rotor (6) and axle (2), being provided with one deck vibration damping layer (4), and rotor (6), axle (2), vibration damping layer (4) are fixed as one by screw (5).
2. voltage equalizing traveling-wave supersonic motor according to claim 1 is characterized in that vibration damping layer (4) adopts silicon rubber.
3. voltage equalizing traveling-wave supersonic motor according to claim 1 and 2 is characterized in that being provided with the pad (3) that can change its thickness between the inboard of the last plane of the stationary plane (21) of axle (2) and upper end cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00221757 CN2442447Y (en) | 2000-09-14 | 2000-09-14 | Voltage equalizing traveling-wave supersonic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00221757 CN2442447Y (en) | 2000-09-14 | 2000-09-14 | Voltage equalizing traveling-wave supersonic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2442447Y true CN2442447Y (en) | 2001-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00221757 Expired - Fee Related CN2442447Y (en) | 2000-09-14 | 2000-09-14 | Voltage equalizing traveling-wave supersonic motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2442447Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1909355B (en) * | 2006-08-15 | 2010-05-12 | 华南农业大学 | Rotary type ultraphonic motor |
-
2000
- 2000-09-14 CN CN 00221757 patent/CN2442447Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1909355B (en) * | 2006-08-15 | 2010-05-12 | 华南农业大学 | Rotary type ultraphonic motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |