CN106981944A - Linear drive apparatus - Google Patents
Linear drive apparatus Download PDFInfo
- Publication number
- CN106981944A CN106981944A CN201710330126.9A CN201710330126A CN106981944A CN 106981944 A CN106981944 A CN 106981944A CN 201710330126 A CN201710330126 A CN 201710330126A CN 106981944 A CN106981944 A CN 106981944A
- Authority
- CN
- China
- Prior art keywords
- rotor
- bearing
- sliding block
- motor cover
- guide rail
- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transmission Devices (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a kind of linear drive apparatus, including guide rail, motor, motor cover, sliding block, ball screw, latch segment, control system, long ball grooves are offered on the guide rail, the motor cover is fixedly mounted on the motor two ends, bearing hole is offered in the motor cover, the two ends of rotor is rotated with the motor cover through the bearing hole and is connected, the sliding block is arranged on the guide rail, and be slidably connected with the guide rail, holding tank has been opened on the sliding block, ball screw is located in the holding tank, the latch segment is located at below the sliding block, and be fixedly mounted on the sliding block, shaft coupling is provided between the rotor and the ball screw, the two ends of the ball screw are arranged with ball-recirculation device successively respectively, pressure bearing, bearing baffle, the bearing baffle is rotated with the ball screw and is connected；The achievable ultralong-stroke of the present invention, while ensure that the high accuracy of ball-screw.
Description
Technical field
The present invention relates to linear drives equipment, especially a kind of linear drive apparatus of suitable ultralong-stroke.
Background technology
At present, generally ball screw, gear-rack drive, synchronous belt that straight-line displacement drives are used on existing lathe
Driving, trapezoidal screw driving.Ball screw precision is high, good endurance, but the equipment that may not apply to long stroke, same synchronous
Belt and trapezoidal screw can not be also used in the field of long stroke, and it is excessive that ultralong-stroke can cause screw mandrel or belt to conduct oneself with dignity, and deforms
Amount is big, and vibrations are big, reciprocal positioning precision reduction.Rack pinion be adapted to ultralong-stroke application, rack can with unlimited lengthening,
But gear and rack engagement can have gap, and bigger gyration aperture is caused using abrasion for a long time, precision is low.Therefore row
Need design is a kind of to be suitable to ultralong-stroke and the high linear drive apparatus of precision in the industry, to overcome the deficiencies in the prior art.
The content of the invention
In order to solve the problem of prior art is present, the invention provides a kind of linear drives equipment.
To achieve the above object, the present invention adopts the technical scheme that linear drive apparatus, including：
Guide rail, offers long ball grooves；
Motor, including stator, rotor, the stator are slidably connected with the guide rail, and the rotor is set in described
In stator；
Motor cover, is fixedly mounted in the motor two ends, the motor cover and offers bearing hole, the rotor two
End rotates with the motor cover through the bearing hole and is connected；
Sliding block, is arranged on the guide rail, is slidably connected with the guide rail, and holding tank has been opened on the sliding block；
Ball screw, in the holding tank；And
Latch segment, below the sliding block, and is fixedly mounted on the sliding block；
Wherein, be provided with shaft coupling between the rotor and the ball screw, the two ends of the ball screw respectively according to
Secondary to be arranged with ball-recirculation device, pressure bearing, bearing baffle, the ball-recirculation device, pressure bearing, bearing baffle are respectively positioned on institute
State in long ball grooves, the bearing baffle is rotated with the ball screw and is connected.
In one embodiment of the invention, rotor slot is offered on the stator, the section of the rotor slot is circular arc, institute
Rotor is stated in the space that the rotor slot and the long ball grooves are formed.
In one embodiment of the invention, the motor cover includes the first motor cover, the second motor cover, first motor
Lid, the second motor cover are set in the two ends of rotor, and it is described fixed that first motor cover, the second motor cover are respectively and fixedly installed to
The both ends of the surface of son.
In one embodiment of the invention, bearing block, the bearing block are equipped with first motor cover, the second motor cover
In the long ball grooves of the guide rail, the bearing hole is opened on the bearing block, and bearing is provided with the bearing hole,
The bearing inner sleeve is provided with the rotor.
In one embodiment of the invention, second motor cover includes end backup plate, connecting plate, the end backup plate and connecting plate
It is fixedly connected, the end backup plate is fixedly connected on the end face of the stator, the end face of the connecting plate and the sliding block
It is fixedly connected.
In one embodiment of the invention, the connecting plate is L-type connecting plate.L-type connecting plate is two, is symmetrically distributed in end
The part of the vertical corresponding L-type connecting plate in the both sides of backup plate, wherein L is connected to a fixed with the end backup plate.
In one embodiment of the invention, the two ends on the sliding block offer baffle plate groove, and the bearing baffle is located at described
In baffle plate groove, and it is fixedly connected with the sliding block.
In one embodiment of the invention, the guide rail is provided with earflap, and the earflap is fixedly connected with the guide rail, described
Offer snap openings on sliding block, the height of the snap openings is less than or equal to the thickness of the earflap, the snap openings with it is described
Earflap is engaged, and the guide rail is slided on the earflap.The latch segment is symmetrically mounted on the described of the both sides of the guide rail
Below sliding block.
In one embodiment of the invention, encoder is provided with the rotor, the encoder is rotated with the rotor to be connected
Connect, the encoder is fixedly mounted in first motor cover.
In one embodiment of the invention, in addition to control system, the motor, encoder with the control system
Electrical connection.
The technical program has the advantages that：
The pressure bearing and bearing baffle for being set in ball screw two ends end enable ball screw to be stably defined
In the holding tank of sliding block, i.e., ball screw can only be rotated inside sliding block and can not moved horizontally, and can be with the same time shift of sliding block
It is dynamic.Being arranged on the latch segment below sliding block is used for " pulling " sliding block and ball screw, sliding block is close to guide rail, in sliding block and rolling
Ball between ballscrew is with precompression, it is to avoid gap occurs between ball and rolls.Meanwhile, long ball is offered on guide rail
Groove, the long ball grooves are groove, and the stator, ball screw part are located in groove, and can rotated in groove.Driving electricity
Machine, sliding block are relative with guide rail sliding motion all together, and position movement occurs together with the sliding block for latch segment.Offered on stator
Rotor slot, the rotor slot is that section is semicircle shape, and rotor is located in the space that rotor slot is formed with long ball grooves.It is rotatable
Encoder be used to feed back rotor rotational angle signal, feeding back to control system is used to control the rotation of motor.
The present invention directly drives the ball screw inside sliding block by motor, and rotatable parts are short and small, and rotary inertia is small,
Guide rail can realize ultralong-stroke by docking simultaneously, it is ensured that the high accuracy of ball-screw.
Brief description of the drawings
Fig. 1 is the explosive view of one embodiment of the invention；
Fig. 2 is the view at another visual angle of Fig. 1 explosive views of the present invention；
Fig. 3 is the structural representation of one embodiment of the invention；
Fig. 4 is the sectional view of one embodiment of the invention.
1st, guide rail；2nd, motor；4th, sliding block；6th, latch segment；7th, long ball grooves；21st, stator；22nd, rotor；23rd, rotor
Groove；31st, the first motor cover；32nd, the second motor cover；33rd, bearing block；34th, bearing hole；35th, bearing；8th, backup plate is held；9th, L-type is connected
Plate；10th, holding tank；11st, ball screw；12nd, latch segment；13rd, shaft coupling；14th, ball-recirculation device；15th, pressure bearing；16th, axle
Hold baffle plate；17th, baffle plate groove；18th, earflap；41st, snap openings；20th, encoder；1211st, U-shaped circulator；1222nd, ball grooves.
Embodiment
With reference to embodiment and accompanying drawing 1 to 4, the invention will be further described.
Linear drive apparatus involved in the present invention, including guide rail 1, motor 2, motor cover, sliding block 4, ball screw
11st, latch segment 6, control system.Long ball grooves 7 are offered on the guide rail 1, the long ball grooves 7 are semi-circular grooves, groove
Inside it is provided with threaded line.The motor 2 includes stator 21, rotor 22, and the stator 21 is slidably connected with the guide rail 1,
The rotor 22 is set in the stator 21；Rotor slot 23 is offered on the stator 21, the rotor slot 23 is circular arc
Groove, the rotor 22 is located in the space that the rotor slot 23 is formed with the long ball grooves 7 and relative turn with stator 21
It is dynamic.
Install and be separately installed with the first motor cover 31, the second motor cover 32, first motor in the two ends of the stator 21
Lid 31, the second motor cover 32 are respectively and fixedly installed in the both ends of the surface of the stator 21.First motor cover 31, the second motor
It is equipped with lid 32 on bearing block 33, the bearing block 33 and has been opened in bearing hole 34, first motor cover 31, the second motor
Lid 32 is set in the two ends of the rotor 22, bearing hole 34 by bearing hole 34 and is provided with bearing 35 respectively.It is installed to described
Bearing seat 33 on stator 21 is in the long ball grooves 7 of the guide rail 1.
Second motor cover 32 also includes end backup plate 8, two L-type connecting plates 9, described two L-type connecting plates 9 are symmetrical,
And L transverse direction, in being distributed in the both sides of the end backup plate 8 away from shape, being fixedly connected with the end backup plate 8, three can also be
It is made by being integrally formed mode.The vertical corresponding parts of wherein L-type connecting plate 9L are connected to a fixed with the end backup plate 8,
The end backup plate 8 is fixedly connected on by connectors such as screws on the end face of the stator 21, and the L of the L-type connecting plate 9 is horizontal
It is fixedly connected to corresponding part with the end face of the sliding block 4 by connectors such as screws.
The sliding block 4 is placed on the guide rail 1, is slidably connected with the guide rail 1, and appearance has been opened on the sliding block 1
Receive groove 10；The ball screw 11 is located in the space formed in the holding tank 10 with the long ball grooves 7 of the guide rail 1.
The lower section of sliding block 1 is provided with latch segment 12, and latch segment 12 includes U-shaped circulator 1211 and ball grooves 1222, U-shaped circulator
It is fixedly connected between 1211 and ball grooves 1222.The latch segment 12 is fixedly mounted on the sliding block 1, for holding tank 10
In ball with certain precompression, it is to avoid gap roll generation.
It is attached, is directly driven by motor by shaft coupling 13 between the rotor 22 and the ball screw 11
Ball screw 5 inside movable slider 4, rotatable parts are short and small, and rotary inertia is small, and precision is high.The two ends difference of the ball screw 5
The two ends being arranged with successively on ball-recirculation device 14, pressure bearing 15, bearing baffle 16, the sliding block 1 offer baffle plate groove 17,
The bearing baffle 16 is located in the baffle plate groove 17, is fixedly connected with the sliding block 1,16 sets of the bearing baffle and the rolling
Ballscrew 11 rotates connection.
The guide rail 1 is provided with earflap 18, and the earflap 18 is fixedly connected or is integrally formed with the guide rail 1.
Snap openings 41 are offered on the sliding block 4, the height of the snap openings 41 is less than or equal to the thickness of the earflap 18, be easy to work as
The sliding block 4 when being placed on the guide rail 1 snap openings 41 be engaged with the earflap 18, the two side of snap openings 41
Fitted with the earflap 18, be further able to slide along earflap 18.Now, it both can guarantee that both sides were installed below sliding block 4
Latch segment 12, can make the weight of whole sliding block 4 minimum, reduce vibrations, improve precision again.The latch segment 12 is symmetrically pacified
Mounted in the lower section of sliding block 4 at the both sides earflap of guide rail 1, fixed form can be carried out by connectors such as screws, so that
Sliding block 4 and ball screw is set to be adjacent to guide rail, it is ensured that ball has a precompression between them.
Be additionally provided with encoder 20 on the rotor 22, the encoder 20 be set on rotor 22 and with the rotor
22 rotate connection, and the encoder 20 is fixedly connected in first motor cover 31, and the motor 2, encoder 20 are equal
Electrically connected with the control system, rotatable encoder 20 is used to feed back rotor rotational angle signal, feeds back to control system
Rotation for controlling motor.
In the present embodiment, the stator 21 cuts away half, rotor or complete rotor equivalent to the stator of common electric machine,
The stator of half can drive rotor 22 to rotate (type of drive still as common stepper motor, using AC induction motor in the same old way
Principle or synchronous machine drives principle), while the rotary encoder feedback rotational angle signal of afterbody.Circuit control is upper and general
Logical servomotor is just the same, it is not necessary to change existing control.
The present invention designs energy in the linear drive apparatus for being more suitable for ultralong-stroke, precision by the structure of advantages of simple
Enough match in excellence or beauty ball-screw, while can infinitely dock again, realizes ultralong-stroke.
Above-mentioned specific embodiment is used only to illustrate the present invention, rather than is to limit the invention, in the present invention
Objective and scope of the claims in, to any replacement and change for not paying creative work for making of the present invention,
Fall within the protection domain of patent of the present invention.
Claims (10)
1. a kind of linear drive apparatus, it is characterised in that including：
Guide rail, offers long ball grooves；
Motor, including stator, rotor, the stator are slidably connected with the guide rail, and the rotor is set in the stator
It is interior；
Motor cover, is fixedly mounted in the motor two ends, the motor cover and offers bearing hole, and the two ends of rotor is worn
The bearing hole is crossed to be connected with motor cover rotation；
Sliding block, is arranged on the guide rail, is slidably connected with the guide rail, and holding tank has been opened on the sliding block；
Ball screw, in the holding tank；And
Latch segment, below the sliding block, and is fixedly mounted on the sliding block；
Wherein, shaft coupling is provided between the rotor and the ball screw, the two ends of the ball screw cover successively respectively
Provided with ball-recirculation device, pressure bearing, bearing baffle, the ball-recirculation device, pressure bearing, bearing baffle are respectively positioned on the length
In ball grooves, the bearing baffle is rotated with the ball screw and is connected.
2. linear drive apparatus according to claim 1, it is characterised in that rotor slot is offered on the stator, described
The section of rotor slot is circular arc, and the rotor is located in the space that the rotor slot is formed with the long ball grooves.
3. linear drive apparatus according to claim 1, it is characterised in that the motor cover includes the first motor cover, the
Two motor covers, first motor cover, the second motor cover are set in the two ends of rotor, first motor cover, the second motor
Lid is respectively and fixedly installed to the both ends of the surface of the stator.
4. linear drive apparatus according to claim 3, it is characterised in that in first motor cover, the second motor cover
Bearing block is equipped with, the bearing seat is in the long ball grooves of the guide rail, and the bearing hole is opened on the bearing block,
Bearing is provided with the bearing hole, the bearing inner sleeve is provided with the rotor.
5. linear drive apparatus according to claim 4, it is characterised in that second motor cover includes end backup plate, connected
Fishplate bar, the end backup plate is fixedly connected with connecting plate, and the end backup plate is fixedly connected on the end face of the stator, the company
Fishplate bar is fixedly connected with the end face of the sliding block.
6. linear drive apparatus according to claim 5, it is characterised in that the connecting plate is L-type connecting plate.
7. linear drive apparatus according to claim 1, it is characterised in that the two ends on the sliding block offer baffle plate
Groove, the bearing baffle is located in the baffle plate groove, and is fixedly connected with the sliding block.
8. linear drive apparatus according to claim 7, it is characterised in that the guide rail is provided with earflap, the earflap
It is fixedly connected with the guide rail, snap openings is offered on the sliding block, the height of the snap openings is less than or equal to the earflap
Thickness, the snap openings are engaged with the earflap, and the guide rail is slided on the earflap.
9. linear drive apparatus according to claim 1, it is characterised in that encoder is provided with the rotor, described
Encoder is rotated with the rotor and is connected, and the encoder is fixedly mounted in first motor cover.
10. according to any described linear drive apparatus of claim 1 to 9, it is characterised in that described also including control system
Motor, encoder are electrically connected with the control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710330126.9A CN106981944B (en) | 2017-05-11 | 2017-05-11 | Linear drive apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710330126.9A CN106981944B (en) | 2017-05-11 | 2017-05-11 | Linear drive apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106981944A true CN106981944A (en) | 2017-07-25 |
| CN106981944B CN106981944B (en) | 2019-08-06 |
Family
ID=59343359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710330126.9A Active CN106981944B (en) | 2017-05-11 | 2017-05-11 | Linear drive apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106981944B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869539A (en) * | 2018-08-23 | 2018-11-23 | 深圳供电局有限公司 | Slide rail assembly for high-voltage-grade cable line processing device |
| CN110567358A (en) * | 2019-08-26 | 2019-12-13 | 中国美术学院 | Method and device for measuring diameter by double-acting cantilever beam sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003230251A (en) * | 2002-01-31 | 2003-08-15 | Nsk Ltd | Uniaxial actuator |
| JP2009115523A (en) * | 2007-11-05 | 2009-05-28 | Toyota Motor Corp | Linear actuator for fatigue test |
| CN103904819A (en) * | 2009-06-19 | 2014-07-02 | 黑田精工株式会社 | Linear moving device |
| CN205173394U (en) * | 2015-11-03 | 2016-04-20 | 深圳市福士工业科技有限公司 | Long stroke screw mechanism |
-
2017
- 2017-05-11 CN CN201710330126.9A patent/CN106981944B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003230251A (en) * | 2002-01-31 | 2003-08-15 | Nsk Ltd | Uniaxial actuator |
| JP2009115523A (en) * | 2007-11-05 | 2009-05-28 | Toyota Motor Corp | Linear actuator for fatigue test |
| CN103904819A (en) * | 2009-06-19 | 2014-07-02 | 黑田精工株式会社 | Linear moving device |
| CN205173394U (en) * | 2015-11-03 | 2016-04-20 | 深圳市福士工业科技有限公司 | Long stroke screw mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869539A (en) * | 2018-08-23 | 2018-11-23 | 深圳供电局有限公司 | Slide rail assembly for high-voltage-grade cable line processing device |
| CN110567358A (en) * | 2019-08-26 | 2019-12-13 | 中国美术学院 | Method and device for measuring diameter by double-acting cantilever beam sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106981944B (en) | 2019-08-06 |
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