CN201082510Y - Ultrasound wave driven precision dividing apparatus - Google Patents
Ultrasound wave driven precision dividing apparatus Download PDFInfo
- Publication number
- CN201082510Y CN201082510Y CNU2007200875827U CN200720087582U CN201082510Y CN 201082510 Y CN201082510 Y CN 201082510Y CN U2007200875827 U CNU2007200875827 U CN U2007200875827U CN 200720087582 U CN200720087582 U CN 200720087582U CN 201082510 Y CN201082510 Y CN 201082510Y
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- dividing
- main shaft
- head
- dividing head
- angle
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Abstract
The utility model relates to an ultrasonic driving ultrasonic driven precise dividing device. An ultrasonic motor drives the main shaft of a dividing head for dividing, a dividing close loop control circuit of the angle is realized by installing an angle detection sensor on the main shaft, and thus precise dividing is realized. The precise dividing device has the advantages that because the motor directly drives the dividing main shaft of the ultrasonic motor driven dividing head, the error brought by an intermediate transmission system is eliminated, and precise dividing and positioning can be realized only by accurately controlling the driving motor. Because of the simple structure, the operational reliability of the ultrasonic motor driven dividing head can be greatly enhanced, and also, the performance-price ratio of the complete machine is greatly improved. The ultrasonic motor driven dividing head can nearly meet any dividing and positioning requirements in the condition of configuring high precision detection sensor and controller.
Description
Technical field
The utility model belongs to the precision indexing field, relates to the precision dividing apparatus that a kind of ultrasonic wave drives.
Background technology
Precision dividing apparatus is widely used in fields such as metering, machine-building, scientific research.At present, the structure of the most popular high-precision dividing apparatus of industry generally all is to be made of electric hardware system, machine driven system, control software systems etc.Wherein machine driven system comprises that reducing gear (transmission device mainly is a worm and wormwheel), anchor clamps etc. are the keys of decision indexing accuracy.
For the reading resolution capability that improves it with reduce the continuous division accumulated error, generally adopt the reduction gearing mechanism of high-resolution encoder and high precision to improve indexing accuracy.Along with the raising that indexing accuracy requires, the precision of the transmission mechanism of decision indexing accuracy also makes machining cost be multiplied.Therefore, at present absolute indexing accuracy error is less than 10 " the price of dividing head generally more than 100,000 yuan.Dividing head for requirements at the higher level not only costs an arm and a leg at present, and also there is certain problem in the reliability of its precision round subsection performance.
Summary of the invention
The utility model purpose is to rely on transmission system in order to overcome on the existing indexing means precision, thereby its cost costliness, precision are difficult to reach problems such as rad level and reliability are not high, directly utilize supersonic motor to drive dividing spindle and carry out calibration, avoided the precision shortcoming of the indexing accuracy dependence transmission mechanism of existing indexing means.
The technical solution of the utility model is:
The precision dividing apparatus that a kind of ultrasonic wave drives, comprise support 11, supersonic motor 7, bearing 1, angle detecting sensor (3,5), the main shaft 2 of dividing head, ceramic disk 4, angle detecting sensor is that angle detects circle grating 3 and angle detects read head 5, it is characterized in that: 15 ° of circular cone steps are with in design on the main shaft 2 of dividing head, as shown in Figure 2, and be 15 ° of taper seats on one side, another side is the face of cylinder, angle detects circle grating 3 and is installed on the taper seat of 15 ° on main shaft, ceramic disk 4 is fixed on the disk of main shaft of dividing head, the main shaft 2 of dividing head is installed on the support 11 by bearing 1, supersonic motor 7 is installed on the motor mount 8 on the frame bottom plate 10, and rotates by the main shaft that ceramic disk 4 is stirred dividing head, and angle detects read head 5 and is installed on the frame bottom plate 10 by read head mount pad 12.
Described bearing 1 is corner connection touch bearing.
It is contactless grating detector that described angle detects read head 5.
In the bigger application scenario of load, the driving force of a motor may be not enough, can also distribute a plurality of supersonic motors symmetrically and evenly to satisfy the driving force requirement along the circumferencial direction of the main shaft 2 of dividing head.
Needs according to using also can be designed to vertical direction with the main shaft of dividing head, thereby become vertical dividing head.
The utlity model has following advantage: utilize the dividing head of supersonic motor driving because motor direct-drive calibration main shaft has been eliminated the error of being brought by middle transmission system, as long as accurately the control drive motors just can be realized accurate calibration and location.
The dividing head that supersonic motor drives improves greatly owing to its its functional reliability that makes simple in structure, on the other hand, also improved machine performance price ratio greatly, along with going deep into of devices such as domestic supersonic motor and encoder research, believing reduces cost also has very big space.
The dividing head that supersonic motor drives almost can satisfy any calibration and positioning requirements under the condition of configuration high-precision test sensor and controller.
Description of drawings
Fig. 1 is a general structure schematic diagram of the present utility model.
Fig. 2 is the main axle structure schematic diagram with 15 ° of circular cone steps of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model comprises support 11, supersonic motor 7, bearing 1, angle detecting sensor (3,5), the main shaft 2 of dividing head, ceramic disk 4, angle detecting sensor is that angle detects circle grating 3 and angle detects read head 5, the output of the main shaft 2 of dividing head can be designed to open type of attachment according to user's needs, connects various anchor clamps to satisfy.Bearing 1 is fixed on the main shaft 2 of dividing head on the support 11, the main shaft of dividing head as shown in Figure 2,13 for being with 15 ° of circular cone steps among Fig. 2,14 for installing the ring surface of circle grating among Fig. 2, angle detects on the taper seat at 13 places in circle grating 3 installations diagram 2, ceramic disk 4 is fixed among Fig. 2 on 14 place's planar annulars, supersonic motor 7 is installed on the motor mount 8 on the frame bottom plate 10, and rotate by the main shaft 2 that ceramic disk 4 is stirred dividing head, angle detects read head 5 and is installed on the frame bottom plate 10.It is contactless grating detector that angle detects read head 5, the raster count that angle detects on the circle grating is exported with impulse form, angle detection circle grating 3 and angle detection read head 5 combine and have in fact constituted angle detecting sensor, the angle information of main shaft is fed back to close loop control circuit of control system formation, thereby realize accurate calibration.In the bigger application scenario of load, the driving force of a motor may be not enough, can also distribute a plurality of supersonic motors symmetrically and evenly to satisfy the driving force requirement along the circumferencial direction of the main shaft 2 of dividing head.9 is the outer cover of dividing head among Fig. 1.
Needs according to using also can be designed to vertical direction with the main shaft of dividing head, thereby become vertical dividing head.
Supersonic motor also is ceramic motor, it is an inverse piezoelectric effect of utilizing piezoelectric ceramics-under action of alternative electric field, the phenomenon that pottery meeting generation is stretched-directly electric energy is transformed into mechanical energy, the operating frequency of this motor is generally more than 20kHz, so be called piezoelectric ultrasonic motor.Usually by various vibration mode conversions and compound, piezoelectric ultrasonic motor could become the simply flexible pattern of piezoelectrics needed can be used to produce rotation or straight-line drive pattern.According to the ultrasonic wave Principle of Standing-wave in the phenomenon of piezoelectricity, promptly utilize multiple diaphragm coupling to form the elliptic motion of stator surface particle, this moment movable object just rotor under certain pressure, contact with stator surface, then the frictional force that produces of stator surface particle elliptic motion promotes rotor rotation, and it is similar that its operation principle and a people constantly dial the mode of a rotor rotation with hand.In the accompanying drawing 16 is the piezoelectric vibrator of supersonic motor.Thereby supersonic motor is exactly to stir main shaft 2 rotations that ceramic disk 4 makes dividing head by piezoelectric vibrator 6.
Claims (4)
1. the precision dividing apparatus that drives of a ultrasonic wave, comprise support (11), supersonic motor (7), bearing (1), angle detecting sensor (3,5), the main shaft of dividing head (2), ceramic disk (4), angle detecting sensor is that angle detects circle grating (3) and angle detects read head (5), it is characterized in that: the main shaft of dividing head (2) is gone up design and is with 15 ° of circular cone steps, and be 15 ° of taper seats on one side, another side is the face of cylinder, angle detects circle grating (3) and is installed on the taper seat of 15 ° on main shaft, ceramic disk (4) is fixed on the disk of main shaft of dividing head, the main shaft of dividing head (2) is installed on the support (11) by bearing (1), supersonic motor (7) is installed on the motor mount (8) on the frame bottom plate (10), and rotate by the main shaft (2) that ceramic disk (4) is stirred dividing head, angle detects read head (5) and is installed on the frame bottom plate (10) by read head mount pad (12).
2. the precision dividing apparatus that ultrasonic wave according to claim 1 drives, it is characterized in that: described bearing (1) is a corner connection touch bearing.
3. the precision dividing apparatus that ultrasonic wave according to claim 1 drives is characterized in that: described angle detects read head (5) and is contactless optical canopy detector.
4. the precision dividing apparatus that drives according to the described ultrasonic wave of one of claim 1-3 is characterized in that: along the circumferencial direction of the main shaft (2) of the dividing head above supersonic motor that distributes symmetrically and evenly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200875827U CN201082510Y (en) | 2007-10-17 | 2007-10-17 | Ultrasound wave driven precision dividing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200875827U CN201082510Y (en) | 2007-10-17 | 2007-10-17 | Ultrasound wave driven precision dividing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201082510Y true CN201082510Y (en) | 2008-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200875827U Expired - Fee Related CN201082510Y (en) | 2007-10-17 | 2007-10-17 | Ultrasound wave driven precision dividing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201082510Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114689097A (en) * | 2020-06-18 | 2022-07-01 | 中国科学院苏州生物医学工程技术研究所 | Sensing part of ultrasonic rotary encoder |
-
2007
- 2007-10-17 CN CNU2007200875827U patent/CN201082510Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114689097A (en) * | 2020-06-18 | 2022-07-01 | 中国科学院苏州生物医学工程技术研究所 | Sensing part of ultrasonic rotary encoder |
| CN114689097B (en) * | 2020-06-18 | 2023-11-24 | 中国科学院苏州生物医学工程技术研究所 | Sensing component of ultrasonic rotary encoder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 Termination date: 20111017 |