CN104819182A - Rodless cylinder capable of realizing accurate positioning - Google Patents

Rodless cylinder capable of realizing accurate positioning Download PDF

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Publication number
CN104819182A
CN104819182A CN201510154015.8A CN201510154015A CN104819182A CN 104819182 A CN104819182 A CN 104819182A CN 201510154015 A CN201510154015 A CN 201510154015A CN 104819182 A CN104819182 A CN 104819182A
Authority
CN
China
Prior art keywords
cylinder
magnetic ring
ball nut
leading screw
cylinder barrel
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.)
Pending
Application number
CN201510154015.8A
Other languages
Chinese (zh)
Inventor
陈成军
刘鹏
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.)
Qingdao University of Technology
Original Assignee
Qingdao University of Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao University of Technology filed Critical Qingdao University of Technology
Priority to CN201510154015.8A priority Critical patent/CN104819182A/en
Publication of CN104819182A publication Critical patent/CN104819182A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20Other details, e.g. assembly with regulating devices
    • F15B15/26Locking mechanisms
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20Other details, e.g. assembly with regulating devices
    • F15B15/28Means for indicating the position, e.g. end of stroke
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B2015/1495Characterised by the construction of the motor unit of the straight-cylinder type with screw mechanism attached to the piston

Abstract

A rodless cylinder capable of realizing accurate positioning comprises a cylinder barrel, an outer magnet ring group, an inner magnet ring group, a ball nut, a screw rod, an electromagnetic braking locking device, a speed-increase transmission part and a rotary encoder, wherein the ball nut is mounted on the screw rod; the inner magnet ring group is connected with the ball nut through a bolt; one end of the screw rod is connected with the electromagnetic braking locking device through a coupler; the speed-increase transmission part is mounted on the shaft of the other end of the electromagnetic braking locking device; the rotary encoder is connected with the speed-increase transmission part; a cylinder body is mounted on the outer surface of the cylinder barrel; the outer magnet ring group is mounted on the inner side of the cylinder body; the outer magnet ring group and the inner magnet ring group are opposite in polarity; the inner surface of the cylinder barrel is provided with a guide bulge; air holes are formed in the two sides of the cylinder barrel; guide grooves are formed in the ball nut and the inner magnet ring group; the guide grooves are matched with the guide bulge, so that accurate positioning of the cylinder body is realized.

Description

One can realize pinpoint Rodless cylinder
Technical field
The present invention relates to a kind of Rodless cylinder, particularly one can realize pinpoint Rodless cylinder, belongs to hydro-pneumatic field.
Background technique
Pneumatic element has the advantage that structure is simple, easy for installation, driving force is large, is currently widely used in industry-by-industry.Cylinder is a kind of main pneumatic apparatus, but existing cylinder mostly has been bar cylinder, and particularly existing cylinder cannot realize accurate location, poor controllability, which greatly limits the application of cylinder.The object of the invention is to invention one can pinpoint Rodless cylinder.
Summary of the invention
Based on the above Problems existing and deficiency, the object of the invention is to invention one can pinpoint Rodless cylinder.Specific as follows:
One can pinpoint Rodless cylinder, it comprises cylinder barrel, outer magnetic ring group, internal magnetic ring group, ball nut, leading screw, electromagnetic brake locking device, step-up drive parts, and rotating coder, wherein, ball nut is arranged on leading screw, internal magnetic ring group is connected with ball nut by bolt, one end of leading screw is connected with electromagnetic brake locking device by coupling, the other end axle of electromagnetic brake locking device is provided with step-up drive parts, rotating coder is connected with step-up drive parts, the outer surface of described cylinder barrel installs cylinder body, the inner side of cylinder body is provided with outer magnetic ring group, the polarity of outer magnetic ring group and internal magnetic ring group is contrary, with guide protrusions on the internal surface of described cylinder barrel, the both sides of described cylinder barrel are provided with pore, and described ball nut and internal magnetic ring group all have guiding groove, and guiding groove coordinates with guide protrusions.
Wherein, described step-up drive parts comprise gearwheel and small gear, and gearwheel is arranged on the end axle of electromagnetic brake locking device, and rotating coder is arranged on the axle at small gear place.
Wherein, one end of leading screw is by the circular groove supporting and location on end cap, and the other end of leading screw is by large bearing supporting and location.
The present invention has following advantage: the piston in Rodless cylinder and the ball nut on screw pair are rigidly connected, composition piston-nut parts, when driven plunger-nut part straight line motion, ball screw can be driven to rotate drives encoder to rotate after speedup, the displacement of cylinder body movement can be calculated according to the drive connection of ball guide screw nat and acceleration system, after control system detects that cylinder body arrives specified position, control locking system, locking leading screw, cylinder body can not move again, thus realize the accurate location of cylinder body.
Accompanying drawing illustrates:
Fig. 1 plan view realizing pinpoint Rodless cylinder of the present invention.
Fig. 2 plan view realizing pinpoint Rodless cylinder of the present invention.
Fig. 3 left sectional view realizing pinpoint Rodless cylinder of the present invention.
1-left end cap, the left seal ring of 2-, 3-cylinder body, the right seal ring of 4-, 5-right end cap, 6-leading screw, 7-base, 8-cylinder barrel, 9-ball nut, the left pore of 10-, 11-outer magnetic ring group, the right pore of 12-, the large bearing of 13-, the large bearing support of 14-, 15-first coupling, 16-gearwheel, 17-locking nut, the little bearing of 18-, 19-small bearing bracket, 20-small gear, 21-second coupling, 22-rotating coder, 23-electromagnetic brake locking device, 24-internal magnetic ring group, 25-seal ring, guide protrusions in 8a-cylinder barrel, the guiding groove in 9a-ball nut and internal magnetic ring group.
Embodiment
Elaborate to embodiments of the invention below in conjunction with accompanying drawing, the present embodiment is implemented under premised on technical solution of the present invention, give detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
With reference to Fig. 1, Fig. 2, Fig. 3, the structure realizing accurate positioning cylinder of the present invention is primarily of compositions such as cylinder barrel, outer magnetic ring group, internal magnetic ring group, ball-screw nut, electromagnetic brake locking device, step-up drive parts, encoder and connected elements.
The circular groove supporting and location passed on left on left end cap 1 of leading screw 6, right side large bearing 13 supporting and location of leading screw 6, leading screw 6 is provided with ball nut 9, internal magnetic ring group 24 is connected with ball nut by bolt.The right-hand member of leading screw 6 is connected with electromagnetic brake locking device 23 by coupling, and the right-hand member axle of electromagnetic brake locking device 23 is provided with gearwheel 16, and gearwheel 16 and small gear 20 form speedup parts, and the right side of small gear is located by little bearings.The axle at small gear place is provided with rotating coder 22.
Described cylinder barrel 8 pass on left left seal ring 2 and left end cap 1 seals, right side is sealed by right seal ring 4 and right end cap 5.The outer surface of described cylinder barrel 8 installs cylinder body 3, and the inner side of cylinder body 3 is provided with outer magnetic ring group 11, and the polarity of outer magnetic ring group 11 and internal magnetic ring group 24 is contrary, is all provided with pad, cylinder body 3 can install fixed load between adjacent magnet ring.
Described ball nut 9 is made up of iron non-magnetic material, and the right ferromagnetic material of cylinder barrel 8 is made.Left pad 2, right pad 4 and all bolts are shown in it is all be made up of nonferromagnetic material.
Between described leading screw 6 and ball nut 9, seal ring is installed, ensures the tightness in chamber, left and right with cylinder barrel 8.
Left end cap 1, right end cap 5, large bearing support 14, electromagnetic brake locking device 23, small gear seat 19 and rotating coder 22 are all fastened on base 7 by bolt group.
The outer surface of described cylinder barrel 8 is cylindrical, and the cross section of inwall is the empty shape of circle, with guide protrusions 8a on internal surface; There is left pore 10 in the left side of described cylinder barrel 8, and there is right pore 12 on right side; There is small gap between the internal control of described seal ring 14 and lead screw shaft, between the outer wall of ball nut 9 and internal magnetic ring group 24 and cylinder barrel 8 inwall, have small gap, to ensure sealability and the low friction between leading screw and seal ring.Described ball nut 9 and internal magnetic ring group 24 all have guiding groove 9a, and guiding groove 9a coordinates with guide protrusions 8a, to ensure that ball nut 9 and internal magnetic ring group 24 can not the internal surface of cylinder barrel 8 again rotate.
The working procedure realizing accurate positioning cylinder of the present invention is as follows:
When the pressure reduction of the cylinder barrel left and right sides is greater than the static friction between transmission part, due to the effect of guide protrusions 8a and guiding groove 9a, ball nut 9 and internal magnetic ring group 24 will be made in inner wall of cylinder and do straight line motion, under the effect of the electromagnetic force of magnet ring group 24 and outer magnetic ring group 11, drive cylinder body 3 to do straight line motion, ball nut 9 drives leading screw to rotate simultaneously, after gearwheel 16 and small gear 20 speedup, pass motion to choosing dress encoder 22, rotating coder can detect the angular displacement degree of small gear 20.Suppose that the helical pitch of leading screw is L, the velocity ratio of gearwheel 16 and small gear 20 is i, then the displacement P of cylinder body 3 movement can be expressed as: controller calculates the displacement of cylinder body 3 according to above formula, when displacement reaches command value, controller controls electromagnetic brake locking device 23 and holds leading screw 6 tightly, make ball nut 9, internal magnetic ring group 24 and cylinder body 3 stop motion, reduced the pressure reduction in chamber, left and right by the Controlling solenoid valve controlling left pore 10 and right pore 12, thus realize accurately location.
In order to make system high efficiency run, can increase the helical pitch L of leading screw during product specification, reducing the velocity ratio of large small gear, be to drive cylinder body 3 to move with chamber, left and right low voltage difference.
As can be seen from above-mentioned control procedure, of the present invention the ball nut of ball-screw nut parts and the internal magnetic ring of Rodless cylinder to be combined, the displacement of internal magnetic ring and cylinder body can be detected, accurate location can be realized by electromagnetic brake locking device.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technological scheme of the present invention; those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention; as changed gear up transmission into other forms of step-up drive, other form enclasp devices etc. are adopted all to belong to the protection domain of this patent.

Claims (3)

1. one kind can pinpoint Rodless cylinder, it is characterized in that: comprise cylinder barrel, outer magnetic ring group, internal magnetic ring group, ball nut, leading screw, electromagnetic brake locking device, step-up drive parts, and rotating coder, wherein, ball nut is arranged on leading screw, internal magnetic ring group is connected with ball nut by bolt, one end of leading screw is connected with electromagnetic brake locking device by coupling, the other end axle of electromagnetic brake locking device is provided with step-up drive parts, rotating coder is connected with step-up drive parts, the outer surface of described cylinder barrel installs cylinder body, the inner side of cylinder body is provided with outer magnetic ring group, the polarity of outer magnetic ring group and internal magnetic ring group is contrary, with guide protrusions on the internal surface of described cylinder barrel, the both sides of described cylinder barrel are provided with pore, and described ball nut and internal magnetic ring group all have guiding groove, and guiding groove coordinates with guide protrusions.
2. a Rodless cylinder as claimed in claim 1, is characterized in that: described step-up drive parts comprise gearwheel and small gear, and gearwheel is arranged on the end axle of electromagnetic brake locking device, and rotating coder is arranged on the axle at small gear place.
3. a Rodless cylinder as claimed in claim 1, is characterized in that: one end of described leading screw is by the circular groove supporting and location on end cap, and the other end of leading screw is by large bearing supporting and location.
CN201510154015.8A 2015-04-02 2015-04-02 Rodless cylinder capable of realizing accurate positioning Pending CN104819182A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510154015.8A CN104819182A (en) 2015-04-02 2015-04-02 Rodless cylinder capable of realizing accurate positioning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510154015.8A CN104819182A (en) 2015-04-02 2015-04-02 Rodless cylinder capable of realizing accurate positioning

Publications (1)

Publication Number Publication Date
CN104819182A true CN104819182A (en) 2015-08-05

Family

ID=53729603

Family Applications (1)

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Country Status (1)

Country Link
CN (1) CN104819182A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107449479A (en) * 2017-07-26 2017-12-08 成都西屋科技发展有限公司 A kind of contactless pneumatic metering plunger pump
CN108098694A (en) * 2016-11-25 2018-06-01 南京德朔实业有限公司 Power tool
CN109842237A (en) * 2019-01-28 2019-06-04 浙江弘赫自动化技术有限公司 A kind of electric cylinder for magnetic drives
CN110925268A (en) * 2020-01-09 2020-03-27 长春工业大学 Rotary decoupling type rodless locking cylinder of magnetic coupling type precision positioning sliding table and control method
CN111059094A (en) * 2020-01-09 2020-04-24 长春工业大学 Limit screw rod rotation decoupling type mechanical rodless locking cylinder
US11252873B2 (en) * 2017-03-21 2022-02-22 Jiangsu University Self-adaptive control system for feed opening degree of round baler, and control method therefor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62200007A (en) * 1986-02-26 1987-09-03 Ishikawajima Harima Heavy Ind Co Ltd Hydraulic cylinder equipment
JPS62246605A (en) * 1986-04-17 1987-10-27 Matsushita Electric Ind Co Ltd Rodless cylinder
EP0322503A2 (en) * 1987-12-29 1989-07-05 Daihatsu Diesel Mfg. Co., Ltd. Fluid apparatus
CN203627395U (en) * 2013-11-01 2014-06-04 宁波恒敏灵通气动成套有限公司 Rodless cylinder
CN103867513A (en) * 2012-12-10 2014-06-18 大连乾宝铸铁有限公司 Magnetic rodless cylinder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62200007A (en) * 1986-02-26 1987-09-03 Ishikawajima Harima Heavy Ind Co Ltd Hydraulic cylinder equipment
JPS62246605A (en) * 1986-04-17 1987-10-27 Matsushita Electric Ind Co Ltd Rodless cylinder
EP0322503A2 (en) * 1987-12-29 1989-07-05 Daihatsu Diesel Mfg. Co., Ltd. Fluid apparatus
CN103867513A (en) * 2012-12-10 2014-06-18 大连乾宝铸铁有限公司 Magnetic rodless cylinder
CN203627395U (en) * 2013-11-01 2014-06-04 宁波恒敏灵通气动成套有限公司 Rodless cylinder

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108098694A (en) * 2016-11-25 2018-06-01 南京德朔实业有限公司 Power tool
CN108098694B (en) * 2016-11-25 2020-09-01 南京德朔实业有限公司 Power tool
US11252873B2 (en) * 2017-03-21 2022-02-22 Jiangsu University Self-adaptive control system for feed opening degree of round baler, and control method therefor
CN107449479A (en) * 2017-07-26 2017-12-08 成都西屋科技发展有限公司 A kind of contactless pneumatic metering plunger pump
CN109842237A (en) * 2019-01-28 2019-06-04 浙江弘赫自动化技术有限公司 A kind of electric cylinder for magnetic drives
CN110925268A (en) * 2020-01-09 2020-03-27 长春工业大学 Rotary decoupling type rodless locking cylinder of magnetic coupling type precision positioning sliding table and control method
CN111059094A (en) * 2020-01-09 2020-04-24 长春工业大学 Limit screw rod rotation decoupling type mechanical rodless locking cylinder
CN111059094B (en) * 2020-01-09 2021-09-14 长春工业大学 Limit screw rod rotation decoupling type mechanical rodless locking cylinder
CN110925268B (en) * 2020-01-09 2021-09-28 长春工业大学 Rotary decoupling type rodless locking cylinder of magnetic coupling type precision positioning sliding table and control method

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SE01 Entry into force of request for substantive examination
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WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150805

WD01 Invention patent application deemed withdrawn after publication