CN202344341U - High-speed machine tool with rotary transformer - Google Patents
High-speed machine tool with rotary transformer Download PDFInfo
- Publication number
- CN202344341U CN202344341U CN2011204116297U CN201120411629U CN202344341U CN 202344341 U CN202344341 U CN 202344341U CN 2011204116297 U CN2011204116297 U CN 2011204116297U CN 201120411629 U CN201120411629 U CN 201120411629U CN 202344341 U CN202344341 U CN 202344341U
- Authority
- CN
- China
- Prior art keywords
- rotary transformer
- machine tool
- speed machine
- stator
- center
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a high-speed machine tool for a rotary transformer, which comprises the motor shaft of the high-speed machine tool, and further comprises the rotary transformer, wherein the rotor part of the rotary transformer is fixed at the tail part of the motor shaft through a screw rod; the stator part of the rotary transformer is fixed with a motor body; the rotor part is rightly positioned in the center of the stator part and positioned in the same plane surface; the rotor part rotates inside the stator by taking the center of the stator part as a rotating center; and the high-speed machine tool provided by the utility model has the benefits as follows: by compared with an original scheme for mounting a rotary type incremental coder, the scheme adopted in the high-speed machine tool has the advantages that the cost for application of the high-speed machine tool is reduced greatly, and limitations of the rotary type incremental coder under special application environment can be overcome.
Description
Technical field
The utility model relates to a kind of high-speed machine tool, relates in particular to a kind of high-speed machine tool with rotary transformer.
Background technology
Encoder is higher in the application percentage in OEM market, is mainly used in industries such as lathe, elevator, servomotor are supporting, textile machine, package packing machine, printing machinery, hoisting machinery.Having arrived in the development in modern times can't substituted status.In the application of high-speed machine tool, plurality of applications adopts rotary incremental encoder.Incremental encoder is that displacement conversion is become the periodic signal of telecommunication, is transformed into count pulse to this signal of telecommunication again, representes the size of displacement with the number of pulse.
High-speed machine tool often need reach very high rotating speed, and the incremental encoder under this application is because it has used high-speed bearing, and its price comparison costliness that becomes has promoted its cost widely.
Summary of the invention
The utility model technical issues that need to address have provided a kind of high-speed machine tool with rotary transformer, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is realized through following technical scheme:
The utility model comprises: the motor shaft of high-speed machine tool; Also comprise: a rotary transformer; The rotor portion of described rotary transformer is fixed on the afterbody of motor shaft through screw rod; The stationary part of rotary transformer and the fuselage of motor fix; The position of said rotor portion just in time is in the center of its stationary part and is in same plane; Said rotor portion rotates in stator interior as pivot with the center of circle of its stationary part.
Compared with prior art; The beneficial effect of the utility model is: compare with the original scheme that rotary incremental encoder is installed; Not only reduce the Costco Wholesale on high-speed machine tool is used, also solved the limitation of rotary incremental encoder under some application circumstances.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:
Visible by Fig. 1: the utility model comprises: the motor shaft 1 of high-speed machine tool; Also comprise: a rotary transformer; The rotor portion 2 of described rotary transformer is fixed on the afterbody of motor shaft 1 through screw rod; The stationary part 3 of rotary transformer fixes with the fuselage of motor; The position of said rotor portion 2 just in time is in the center of its stationary part 3 and is in same plane; Said rotor portion 2 rotates in stator interior as pivot with the center of circle of its stationary part 3.
It is the signal element that a kind of output voltage changes with angle of rotor that the utility model adopts the rotary transformer of prior art; When Exciting Windings for Transverse Differential Protection during with the alternating voltage excitation of certain frequency; The voltage magnitude of output winding becomes the sin cos functions relation with angle of rotor; Or it is keep a certain proportionate relationship, or linear with corner in certain angle range.
In order to reach the effect that reduces the high-speed machine tool cost, the utility model replaces to rotary transformer with rotary incremental encoder, and its substantive distinguishing features is: solved the price problem that uses the high-speed rotary incremental encoder to be caused, reduced its manufacturing cost; Owing to do not contact inside and outside the rotor of rotary transformer and the stator, be very suitable in the high-speed applications, its maximum speed can reach 30000RPM; Rotary transformer is because himself characteristic: high temperature resistance, anti-severe cold, anti-moist, the anti-vibration ability is strong and high speed performance is good characteristics are widely used in the angle, position detecting system in fields such as servo-control system, robot system, machine tool, automobile, electric power, electronics, weaving, printing, Aero-Space, boats and ships, metallurgy, mine, oil field, water conservancy, chemical industry, light industry; On the hardware of frequency converter,, simple and convenient as long as change the encoder feedback card of frequency converter into be directed to rotary transformer feedback card.
The rotor portion of rotary transformer is securely fixed in the afterbody of motor shaft through screw rod, makes the rotor of rotary transformer can follow motor shaft and synchronously rotates together.The stationary part of rotary transformer then fixes through the fuselage with motor, and it can be shifted because of the rotation of motor.The rotor of rotary transformer and stator require after installation, and the position of rotor just in time is in the center of its stator and is in same plane.The rotor of rotary transformer rotates in stator interior as pivot with the center of circle of its stator, only leaves minimum space between its rotor and the stator and guarantees necessarily can not contact between the rotor and stator when rotated.Could guarantee that like this rotary transformer can normally work.
Rotary transformer comprises three windings, i.e. a rotor winding and two stator winding.The rotor winding rotates with motor shaft, and stator winding fixed-site and two stators be an angle of 90 degrees each other.Like this, winding has formed a transformer with angle dependence coefficient.The sinusoidal carrier that is applied on the rotor winding is coupled to stator winding, and output is carried out and the relevant amplitude modulation(PAM) of rotor winding angle to stator winding.Because installation site, the phase difference of the modulated output signal of two stator winding are 90 degree.Can obtain the angular position information of motor shaft through two signals of demodulation, at first will receive pure sinusoid and involve cosine wave, it is divided by obtains the tangent value of this angle then, finally obtains angle value through " arc tangent " function.
The frequency converter of our company is in application process, and for dissimilar encoders, only need change corresponding encoder feedback card just can be suitable with current encoder.Dissimilar encoder feedback card profiles is consistent, can arbitrarily change required feedback card according to practical situations, and volume is little, and installation process is simple and convenient, has very high flexibility.
Claims (1)
1. the high-speed machine tool with rotary transformer comprises: the motor shaft of high-speed machine tool; It is characterized in that also comprising: a rotary transformer; The rotor portion of described rotary transformer is fixed on the afterbody of motor shaft through screw rod; The stationary part of rotary transformer and the fuselage of motor fix; The position of said rotor portion just in time is in the center of its stationary part and is in same plane; Said rotor portion rotates in stator interior as pivot with the center of circle of its stationary part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204116297U CN202344341U (en) | 2011-10-25 | 2011-10-25 | High-speed machine tool with rotary transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204116297U CN202344341U (en) | 2011-10-25 | 2011-10-25 | High-speed machine tool with rotary transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202344341U true CN202344341U (en) | 2012-07-25 |
Family
ID=46533371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204116297U Expired - Fee Related CN202344341U (en) | 2011-10-25 | 2011-10-25 | High-speed machine tool with rotary transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202344341U (en) |
-
2011
- 2011-10-25 CN CN2011204116297U patent/CN202344341U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20141025 |
|
| EXPY | Termination of patent right or utility model |