CN202701883U - Ultra-precision workpiece shaft system with built-in motor for drive and double encoders for feedback - Google Patents

Ultra-precision workpiece shaft system with built-in motor for drive and double encoders for feedback Download PDF

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Publication number
CN202701883U
CN202701883U CN 201220348586 CN201220348586U CN202701883U CN 202701883 U CN202701883 U CN 202701883U CN 201220348586 CN201220348586 CN 201220348586 CN 201220348586 U CN201220348586 U CN 201220348586U CN 202701883 U CN202701883 U CN 202701883U
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CN
China
Prior art keywords
feedback
built
motor
precision
encoder
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
Application number
CN 201220348586
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Chinese (zh)
Inventor
朱生根
罗英俊
文平阶
刘春雨
于建华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Precision Machinery & Engineering Research Co Ltd
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Beijing Precision Machinery & Engineering Research Co Ltd
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Filing date
Publication date
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Priority to CN 201220348586 priority Critical patent/CN202701883U/en
Application granted granted Critical
Publication of CN202701883U publication Critical patent/CN202701883U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an ultra-precision workpiece shaft system with a built-in motor for drive and double encoders for feedback, and relates to the technical field of machine tools. The ultra-precision workpiece shaft system has high precision, high speed and high position feedback resolution ratio. The specific scheme includes that the built-in motor is mounted on the outer side of a rear bearing of an ultra-precision workpiece shaft, a high-precision position feedback encoder is mounted at a position close to the built-in motor, a speed feedback encoder is mounted at the tail end of the workpiece shaft and is far away from the built-in motor, feedback signals of the two encoders are simultaneously accessed into a control system and are switched in the system as needed, and different functions are realized. The built-in motor is directly mounted on the shaft, so that the influence of a mechanical transmission link on precision can be maximally reduced. One of the two encoders for feedback is used for speed feedback control, the other encoder is used for position feedback control, two control signals are accessed into the system, the requirement of the system on interface frequency can be met, and the system is used for switching the feedback signals in different working states.

Description

Inner electric machine drives, Dual-encoder feedback ultraprecise workpiece spindle system
Technical field
The utility model relates to a kind of workpiece spindle system for ultra-precision machine tool, has very high rotating accuracy, can realize high rotating speed, also can realize very high position control accuracy simultaneously.
Background technology
Be one of core technology of Modern High-Tech's product manufacturing towards the ultraprecise processing technology of micro-structural and the research of equipment, in an increasingly wide range of applications at many high-technology fields.Wherein the workpiece spindle system is one of the most key part of ultraprecise process unit, realizes the high rotating accuracy of workpiece spindle system, and high-speed and high position feedback accuracy is significant to microstoning.Traditional workpiece spindle system adopts belt pulley to drive, motor encoder is as speed feedback device, and position feedback also is to connect external encoder by Timing Belt to realize, this structure has been introduced more frame for movement, to realizing high-speed and high accuracy has certain influence.Therefore, use of the new technology, develop more reasonable reliably ultraprecise workpiece spindle system, very important meaning is arranged.
The utility model content
The utility model purpose is that a kind of inner electric machine drives, Dual-encoder feedback ultraprecise workpiece spindle system for micro-structural ultraprecise process unit is developed, and has high-precision high-speed and high position feedback resolutions.
Concrete scheme is, a kind of inner electric machine drives, Dual-encoder feedback ultraprecise workpiece spindle system, inner electric machine is installed in the ultraprecise workpiece spindle rear bearing outside, at the workpiece spindle tail end, the high precision position feedback coder is installed in position near inner electric machine, and the workpiece spindle tail end is away from inner electric machine position installation rate feedback coder, two encoder feedback signals are access control system simultaneously, switches in system and realizes not same-action.
For reaching the purpose of design requirement, adopted the inner electric machine driving, the form of Dual-encoder feedback, inner electric machine is directly installed on the axle, can at utmost reduce the Accuracy that the mechanical transfer link is brought.Two encoders that are used for feedback, one as speed feedback control, and one two control signal connecting systems can satisfy the system interface frequency requirement as position feedback control, under the different operating state, carry out the switching of feedback signal by system.
Description of drawings
Fig. 1 is that inner electric machine drives, Dual-encoder feedback ultraprecise workpiece spindle system schematic.
Fig. 2 is the feedback control principle schematic diagram.
The specific embodiment
Drive for inner electric machine among Fig. 1, Dual-encoder feeds back ultraprecise workpiece spindle system schematic, and wherein 1 is that workpiece spindle fore bearing, 2 is that workpiece spindle rear bearing, 3 is that workpiece spindle rotating part, 4 is that workpiece spindle shell, 5 is that inner electric machine rotor, 6 is that inner electric machine stator, 7 is that position feedback encoder, 8 is the speed feedback encoder.
Inner electric machine rotor 5 is installed on the workpiece spindle rotating part 3, workpiece spindle rear bearing 2 outsides, near the workpiece spindle rear bearing, position feedback encoder 7 is installed in the position of close inner electric machine rotor 5 on the workpiece spindle rotating part 3, and speed feedback encoder 8 is installed in the tail end of workpiece spindle rotating part 3.
Two encoder feedback signals are access control system respectively, and Fig. 2 is feedback control principle figure, system's inbound pacing feedback coder feedback signal when carrying out speed control, and when carrying out Position Control, system's receiving position feedback coder feedback signal.

Claims (1)

1. an inner electric machine driving, Dual-encoder feed back ultraprecise workpiece spindle system, it is characterized in that: inner electric machine is installed in the ultraprecise workpiece spindle rear bearing outside, at the workpiece spindle tail end, the high precision position feedback coder is installed in position near inner electric machine, the workpiece spindle tail end, away from inner electric machine position installation rate feedback coder, two encoder feedback signals are access control system simultaneously, switches and uses.
CN 201220348586 2012-07-18 2012-07-18 Ultra-precision workpiece shaft system with built-in motor for drive and double encoders for feedback Expired - Fee Related CN202701883U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220348586 CN202701883U (en) 2012-07-18 2012-07-18 Ultra-precision workpiece shaft system with built-in motor for drive and double encoders for feedback

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220348586 CN202701883U (en) 2012-07-18 2012-07-18 Ultra-precision workpiece shaft system with built-in motor for drive and double encoders for feedback

Publications (1)

Publication Number Publication Date
CN202701883U true CN202701883U (en) 2013-01-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220348586 Expired - Fee Related CN202701883U (en) 2012-07-18 2012-07-18 Ultra-precision workpiece shaft system with built-in motor for drive and double encoders for feedback

Country Status (1)

Country Link
CN (1) CN202701883U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104132673A (en) * 2014-06-24 2014-11-05 杭州朗杰测控技术开发有限公司 Signal generating device based on encoder
CN106134068A (en) * 2015-02-06 2016-11-16 株式会社Iai The control method of motor and device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104132673A (en) * 2014-06-24 2014-11-05 杭州朗杰测控技术开发有限公司 Signal generating device based on encoder
CN104132673B (en) * 2014-06-24 2017-02-08 杭州朗杰测控技术开发有限公司 Signal generating device based on encoder
CN106134068A (en) * 2015-02-06 2016-11-16 株式会社Iai The control method of motor and device
CN106134068B (en) * 2015-02-06 2019-10-25 株式会社Iai The control method and device of stepping motor

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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
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130130

Termination date: 20180718