CN108380900A - A kind of the inner wall cutting apparatus and its cutting process of 3 D-printing tube body - Google Patents
A kind of the inner wall cutting apparatus and its cutting process of 3 D-printing tube body Download PDFInfo
- Publication number
- CN108380900A CN108380900A CN201810331589.1A CN201810331589A CN108380900A CN 108380900 A CN108380900 A CN 108380900A CN 201810331589 A CN201810331589 A CN 201810331589A CN 108380900 A CN108380900 A CN 108380900A
- Authority
- CN
- China
- Prior art keywords
- rotor
- permanent magnet
- tube body
- wall
- stator
- 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
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 44
- 238000007639 printing Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000001360 synchronised effect Effects 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 7
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 238000007781 pre-processing Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 4
- 230000005389 magnetism Effects 0.000 claims description 2
- 230000007812 deficiency Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 description 25
- 239000000463 material Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B5/08—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning axles, bars, rods, tubes, rolls, i.e. shaft-turning lathes, roll lathes; Centreless turning
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The present invention provides a kind of inner wall cutting apparatus of 3 D-printing tube body, including rotor and stator, the stator is equipped with machine winding, and the rotor is externally provided with permanent magnet cutter, and there are gap formation operation chambers between the stator and rotor.In the present invention, the permanent magnet cutter is knife-like structure, and permanent magnet cutter includes three pairs or more of blade, blade includes interconnecting piece and cutting portion, the angle of interconnecting piece and cutting portion is 135 °, and rotor is equipped with three pairs or more of the groove with blade fits, and the interconnecting piece of blade is mounted in groove.The present invention is processed tubular model inner wall as cutter using permanent-magnetic synchronous motor rotor, continuous this feature of pipe range structure of structure can be printed for 3 D-printing, deficiency of traditional lathe process to the working ability of the tubular model of continuous length is broken through, realizes the working process for the long model inside pipe wall for continuously having certain radian to structure.
Description
Technical field
The present invention relates to automated manufacturing field, the inner wall cutting apparatus of especially a kind of 3 D-printing tube body and its cutting
Method.
Background technology
Currently, being mostly lathe process to the processing of tubular structure, for the pipe range of equivalent length, such methods are then
Have its drawback, be mainly shown as, 3 D-printing can print the tubular structure of continuous length, it is not necessary to as in traditional handicraft by one
The tubular structure of one section of section processes to be spliced again.Also mean that traditional lathe process is continuous for processing length simultaneously
Tubular structure for, because of the length limitation of cutter, the processing of inside pipe wall just has its inconvenience.To solve this problem,
A kind of 3 D-printing model post-processing permanent magnet synchronous motor provided by the invention acts on tubular model using rotor as cutter
Inner wall, carry out machining, realize disposable direct processing to the long tubular structure with certain radian printed, guarantor
Demonstrate,prove processing request and effect.
Invention content
Goal of the invention：The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of three-dimensional to beat
Print the inner wall cutting apparatus and its cutting process of tube body.
In order to solve the above technical problem, the present invention provides a kind of inner wall cutting apparatus of 3 D-printing tube body, including
Rotor and stator, the stator are equipped with machine winding, and the rotor is externally provided with permanent magnet cutter, between the stator and rotor
There are gap formation operation chambers.
In the present invention, the permanent magnet cutter is knife-like structure, and permanent magnet cutter includes three pairs or more of blade, blade packet
Interconnecting piece and cutting portion are included, rotor is equipped with three pairs or more of the groove with blade fits, and the interconnecting piece of blade is mounted on groove
It is interior.
In the present invention, the angle of interconnecting piece and cutting portion is 135 °, then cutting portion and inside pipe wall angle are 45 degree or so, are made
Cutting portion is obtained to go to cut inside pipe wall part to be cut in order to the angle of cutting.
In the present invention, point-blank, interconnecting piece setting exists for the center of the cross section of the groove and the center of rotor
Rotor is radially.Ensure stability of the interconnecting piece in cutting.
In the present invention, the blade has 6, and 6 blades are arranged on rotor at equal intervals forms permanent magnet cutter.
In the present invention, for the operating cavity between stator and permanent magnet cutter, operating cavity can pass through pipe to be processed
Body structure, the rotation of permanent magnet cutter simultaneously carry out machining to pipe structure inner wall to be processed.
In the present invention, the rotor can have different model optional, in the tubing processed as needed by processing request difference
Outer diameter determines the size of rotor and permanent magnet cutter.
In the present invention, the cutter is structure as a whole with rotor.Cutter is more steady, and cutting effect is more preferable.
In the present invention, including permanent magnet synchronous motor, rotor, Stator and electrical machine winding form permanent magnet synchronous motor, it is described forever
Magnetic-synchro motor is low-speed high-torque motor.Rotor speed is depending on rapidoprint, when processing the material of good toughness, controls rotating speed
In 5m/min or so；When processing fragile material, because chip is granular, Integrated Chip will not be formed, rotating speed can be controlled in the left sides 10m/min
It is right.The speed being threadingly advanced：When processing the material of good toughness, 0.4 millimeter of forward speed/turn；When processing fragile material, speed of advancing
0.8 millimeter of degree/turn.
A kind of cutting process of the inner wall cutting apparatus of 3 D-printing tube body is also disclosed in the present invention, including is walked as follows
Suddenly：Step 1：The preprocessing of tube body one end；
Step 2：Pipe structure to be processed is inserted into from preprocessing end in the operating cavity between stator and rotor；
Step 3：Permanent magnet synchronous motor is run, rotor rotation；
Step 4：Permanent magnet cutter starts to cut tube body inner structural wall, and stator does axial screw with rotor under magnetic coupling
Formula moves, until permanent magnet cutter completes the cutting of the inner wall of entire pipe structure；
Step 5：Process finishing closes permanent magnet synchronous motor.
In the present invention, motor operation sends instruction control by host computer, and required rotor position information is using no position
Sensor control method obtains.
Advantageous effect：The present invention is processed tubular model inner wall as cutter using permanent-magnetic synchronous motor rotor, needle
Continuous this feature of pipe range structure of structure can be printed to 3 D-printing model, break through traditional lathe process to continuous length
Tubular model working ability deficiency, realization continuously have to structure at the processing of long model inside pipe wall of certain radian
Reason improves processing efficiency, breaks through limitation and the deficiency of current processing conditions.
Description of the drawings
The present invention is done with reference to the accompanying drawings and detailed description and is further illustrated, it is of the invention above-mentioned or
Otherwise advantage will become apparent.
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is rotor structure schematic diagram.
Specific implementation mode
It elaborates to the present invention below in conjunction with attached drawing.
Embodiment：
As shown in Figure 1, a kind of inner wall cutting apparatus of 3 D-printing tube body provided in this embodiment includes：1, stator, 2,
Rotor, 3, machine winding, 4, permanent magnet cutter, 5, tubular model, 6, operating cavity.
A kind of 3 D-printing model post-processing permanent magnet synchronous motor, including stator 1, rotor 3, machine winding 2 and permanent magnetism
Body cutter 4, permanent magnet cutter 4 are cutter shape, and the installation of permanent magnet cutter is installed using dedicated fixture, is allowed to and rotor iron
Core closely connects.
Such as Fig. 2, permanent magnet cutter 4 is knife-like structure, and permanent magnet cutter 4 includes three pairs or more of blade 7, and blade includes connecting
The angle of socket part 7a and cutting portion 7b, interconnecting piece and cutting portion is 135 °, and rotor is equipped with three pairs or more and blade fits
The interconnecting piece 7a of groove 8, blade is mounted in groove 8.
Specifically, groove 8 is strip grooves, it is consistent with the axial directions OO ' of rotor；The center of the cross section of groove 8 with turn
Center and the radial line AA ' of son unanimously, interconnecting piece be arranged rotor radially so that the installation of interconnecting piece is more secured, prevents
It only causes to loosen during the cutting process.
In the present embodiment, blade has 6, and 6 blades are arranged on rotor at equal intervals forms permanent magnet cutter 4.
In the present embodiment, rotor 3 can elect according to the material difference and processing request difference of tubular model to be processed,
When such as processing the material of good toughness, the cutter shape of certain cutting edge inclination may be selected, chip can be made to be discharged forward in this way, it is unlikely
In scuffing machined surface；And when processing fragile material, surplus when due to cutting is seldom, and the knife that cutting edge inclination is 0 ° may be selected
Has shape.
In the present embodiment, tubular model 6 to be processed is between stator 1 and rotor 3, or is interpreted as rotor 3 and is located at model 6
Inside, the radius of rotor 3 are the bore of the tubular model after processing, tubular mold when rotor radius should be slightly bigger than undressed
Type internal diameter.
In the present embodiment, permanent magnet cutter 4 is rare earth permanent-magnetic material, and rotor core is silicon steel sheet.
Rotor speed is depending on rapidoprint, and when processing the material of good toughness, control processing linear velocity is in 5m/min or so；
When processing fragile material, because chip is granular, Integrated Chip will not be formed, processing linear velocity can be controlled in 10m/min or so.Advance
Speed：When processing the material of good toughness, 0.4 millimeter of forward speed/turn；When processing fragile material, 0.8 millimeter of forward speed/turn.
Application method：
Include the following steps：
Step 1：The preprocessing of tube body one end；
Step 2：Pipe structure to be processed is inserted into from preprocessing end in the operating cavity between stator and rotor；
Step 3：Motor operation, rotor rotation；
Step 4：Cutter starts to cut tube body inner structural wall, and stator does the rotating fortune of axial screw with rotor under magnetic coupling
It is dynamic, the cutting of the inner wall until completing entire pipe structure；
Step 5：Process finishing closes motor.
The step 4 of the above method includes the control method of torque in the present embodiment, and steps are as follows：
Step 1：The actual speed for measuring rotor obtains speed discrepancy △ n by actual speed compared with reference rotation velocity；
Step 2：Torque reference value T is calculated by pi controller in speed discrepancy △ n in step 1*；
Step 3：By torque reference value T in step 2*Compared with the torque actual value being calculated, torque deviation △ is obtained
T acts on inverter according to direct torque parameter selection voltage vector, actual torque is made to be consistent with given torque, realizes
Control to torque.
Wherein：Torque calculation：
ψfFor rotor flux, ψsβFor component of the stator magnetic linkage under α β coordinates, isd、isqIt is stator current under dq coordinates
Component, p be motor number of pole-pairs.Ld、LqThe respectively d-axis inductance and quadrature axis inductance of motor.
Actual speed is obtained by existing method for controlling position-less sensor.
The given torque that speed discrepancy is obtained by the speed regulator that PI rings are constituted.
In the present embodiment, the step 4 of the above method includes the method for real-time correction rotor eccentricity situation, and specific steps are such as
Under：
Step 1：Detect stator three-phase current；
Step 2：If three-phase current unbalance degree is less than 10%, judge that rotor is in shaft core position, return to step 1 continues to examine
It surveys；If three-phase current unbalance degree is more than 10%, rotor disalignment position is judged.
Wherein, three-phase current unbalance degree=(phase current-three-phase average current)/three-phase average current.
Correction rotor-position method be：When phase current is more than average current, reduce the phase duty ratio；When phase current is small
When average current, increase the phase duty ratio, three-phase current is made to restore balance state, is i.e. rotor is restored to shaft core position, duty
The given way of ratio is：The difference of phase current and average current is passed through into PI rings, output duty cycle.
During processing inside pipe wall, processing order is started by host computer transmission, motor brings into operation, 3 turns of rotor
Dynamic, the permanent magnet cutter 4 with cutter shape on rotor 3 starts to cut inside pipe wall.While rotor 3 rotates, stator 1 is along axis
To at the uniform velocity moving, due to magnetic coupling, rotor is also moved axially with stator, and the movement of rotor at this time is the rotating shifting of axial screw
It is dynamic.
In the present embodiment, the rotor-position signal of permanent magnet synchronous motor can not pass through the position of installation photoelectric encoder one kind
Sensor obtains, therefore uses method for controlling position-less sensor.
In the present embodiment, motor needs to cut tubular model inner wall, and motor is controlled using low-speed big, can be with
Ensure that machining accuracy, motor control the control for not laying particular emphasis on speed, but focuses on that control motor is contributed.
The present invention provides a kind of inner wall cutting apparatus of 3 D-printing tube body, implement the technical solution method and
There are many approach, the above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.All undefined components in this embodiment can be implemented in the prior art.
Claims (9)
1. a kind of inner wall cutting apparatus of 3 D-printing tube body, including rotor (3) and stator (1), which is characterized in that the stator
(1) be equipped with machine winding (2), the rotor be equipped with permanent magnet cutter (4), between the stator (1) and rotor (3) there are
Gap formation operation chamber (6).
2. a kind of inner wall cutting apparatus of 3 D-printing tube body according to claim 1, which is characterized in that the permanent magnet
Cutter (4) is knife-like structure, and permanent magnet cutter (4) includes three pairs or more of blade (7), and blade includes interconnecting piece (7a) and cutting
Portion (7b), rotor are equipped with three pairs or more of the groove (8) with blade fits, and the interconnecting piece (7a) of blade is mounted on groove (8)
It is interior.
3. a kind of inner wall cutting apparatus of 3 D-printing tube body according to claim 2, which is characterized in that the interconnecting piece
Angle with cutting portion is 135 °.
4. a kind of inner wall cutting apparatus of 3 D-printing tube body according to claim 3, which is characterized in that the groove
(8) center line of cross section and the center of rotor are point-blank.
5. a kind of inner wall cutting apparatus of 3 D-printing tube body according to claim 4, which is characterized in that the blade has
6,6 blades are arranged on rotor at equal intervals forms permanent magnet cutter (4).
6. a kind of inner wall cutting apparatus of 3 D-printing tube body according to claim 5, which is characterized in that the operating cavity
(6) between stator (1) and permanent magnet cutter (4), operating cavity (6) can pass through pipe structure to be processed, permanent magnet knife
Have (4) rotation and machining is carried out to pipe structure inner wall to be processed.
7. a kind of inner wall cutting apparatus of 3 D-printing tube body according to claim 6, which is characterized in that same including permanent magnetism
Motor is walked, rotor, Stator and electrical machine winding form permanent magnet synchronous motor, and permanent magnet synchronous motor is low-speed high-torque motor.
8. a kind of inner wall cutting apparatus of 3 D-printing tube body according to claim 7, which is characterized in that the permanent magnet
It is structure as a whole with rotor.
9. a kind of cutting process of the inner wall cutting apparatus of 3 D-printing tube body, which is characterized in that include the following steps：
Step 1：The preprocessing of tube body one end；
Step 2：Tube body to be processed is inserted into from preprocessing end in the operating cavity between stator and rotor；
Step 3：Permanent magnet synchronous motor is run, rotor rotation；
Step 4：Permanent magnet cutter starts to cut tube body inner structural wall, and stator does the rotating fortune of axial screw with rotor under magnetic coupling
It is dynamic, until permanent magnet cutter completes the cutting of the inner wall of entire pipe structure；
Step 5：Process finishing closes permanent magnet synchronous motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810331589.1A CN108380900A (en) | 2018-04-13 | 2018-04-13 | A kind of the inner wall cutting apparatus and its cutting process of 3 D-printing tube body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810331589.1A CN108380900A (en) | 2018-04-13 | 2018-04-13 | A kind of the inner wall cutting apparatus and its cutting process of 3 D-printing tube body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108380900A true CN108380900A (en) | 2018-08-10 |
Family
ID=63074000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810331589.1A Pending CN108380900A (en) | 2018-04-13 | 2018-04-13 | A kind of the inner wall cutting apparatus and its cutting process of 3 D-printing tube body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108380900A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4715751A (en) * | 1985-09-27 | 1987-12-29 | Commissariat A L'energie Atomique | Device for the internal machining of a tube |
| JPH02184232A (en) * | 1989-01-09 | 1990-07-18 | Aichi Emerson Electric Co Ltd | Permanent magnet rotor |
| JPH07275977A (en) * | 1994-04-01 | 1995-10-24 | Hitachi Cable Ltd | Method and device for machining spiral fin on internal wall surface of tube |
| CN1406681A (en) * | 2001-08-30 | 2003-04-02 | 隆昌山川精密焊管有限责任公司 | Cold drawing precisive pipe for electrically welding magneto casing of car |
| CN1638902A (en) * | 2002-03-08 | 2005-07-13 | 瓦莱尼特有限责任公司 | Rotatable cutting tool |
| JP2006202712A (en) * | 2005-01-19 | 2006-08-03 | Tamotsu Azuma | Method for processing and manufacturing surface illuminant |
| JP2007268689A (en) * | 2006-03-31 | 2007-10-18 | Utsunomiya Univ | Magnetic abrasive finishing device, method therefor, and machining tool used therefor |
| DE102006059017A1 (en) * | 2006-12-14 | 2008-06-26 | Stahab Gmbh | Method for processing inner surface of pipe, particularly inner surfaces of small diameter pipes, involves guiding pipe with magnetic grinding agent from stator to workpiece to be processed |
| RU96058U1 (en) * | 2010-02-24 | 2010-07-20 | Государственное образовательное учреждение высшего профессионального образования "Уральский государственный лесотехнический университет" | SIDE MECHANISM OF CUTTING OF DIRECT DRIVE MILLING MACHINES |
| CN208067327U (en) * | 2018-04-13 | 2018-11-09 | 南京师范大学 | A kind of inner wall cutting apparatus of 3 D-printing tube body |
-
2018
- 2018-04-13 CN CN201810331589.1A patent/CN108380900A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4715751A (en) * | 1985-09-27 | 1987-12-29 | Commissariat A L'energie Atomique | Device for the internal machining of a tube |
| JPH02184232A (en) * | 1989-01-09 | 1990-07-18 | Aichi Emerson Electric Co Ltd | Permanent magnet rotor |
| JPH07275977A (en) * | 1994-04-01 | 1995-10-24 | Hitachi Cable Ltd | Method and device for machining spiral fin on internal wall surface of tube |
| CN1406681A (en) * | 2001-08-30 | 2003-04-02 | 隆昌山川精密焊管有限责任公司 | Cold drawing precisive pipe for electrically welding magneto casing of car |
| CN1638902A (en) * | 2002-03-08 | 2005-07-13 | 瓦莱尼特有限责任公司 | Rotatable cutting tool |
| JP2006202712A (en) * | 2005-01-19 | 2006-08-03 | Tamotsu Azuma | Method for processing and manufacturing surface illuminant |
| JP2007268689A (en) * | 2006-03-31 | 2007-10-18 | Utsunomiya Univ | Magnetic abrasive finishing device, method therefor, and machining tool used therefor |
| DE102006059017A1 (en) * | 2006-12-14 | 2008-06-26 | Stahab Gmbh | Method for processing inner surface of pipe, particularly inner surfaces of small diameter pipes, involves guiding pipe with magnetic grinding agent from stator to workpiece to be processed |
| RU96058U1 (en) * | 2010-02-24 | 2010-07-20 | Государственное образовательное учреждение высшего профессионального образования "Уральский государственный лесотехнический университет" | SIDE MECHANISM OF CUTTING OF DIRECT DRIVE MILLING MACHINES |
| CN208067327U (en) * | 2018-04-13 | 2018-11-09 | 南京师范大学 | A kind of inner wall cutting apparatus of 3 D-printing tube body |
Non-Patent Citations (1)
| Title |
|---|
| 刘威等: "磁力磨削管道内壁转子磨具研究", 《工具技术》, vol. 46, no. 3, pages 38 - 41 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103444053B (en) | Permanent-magnet rotary electric machine | |
| JP6599955B2 (en) | Stator frame, stator and rotating electric machine | |
| CN204504240U (en) | The efficient dynamic/static piezoelectric main shaft of a kind of high speed and super precision | |
| JPH0398716A (en) | Machine tool | |
| CN106655680B (en) | Adjustable magnetic rotating motor | |
| CN208067327U (en) | A kind of inner wall cutting apparatus of 3 D-printing tube body | |
| CN202424445U (en) | Switch reluctance motor with parallel structure | |
| EP2351202B1 (en) | Machine type identification | |
| CN108380900A (en) | A kind of the inner wall cutting apparatus and its cutting process of 3 D-printing tube body | |
| CN102806494B (en) | Rotation angle location device | |
| CN104143937A (en) | Speed sensorless vector control system | |
| CN102392828B (en) | Magnetic molecular pump rotor nutation peak vibration control method | |
| CN106911279A (en) | A kind of method of DC brushless motor sensorless start-up | |
| US5229672A (en) | Method of adjusting the balance of the rotor of a vehicle AC generator | |
| CN105610367A (en) | Low-frequency vibration suppression method of dual-rotor compressor | |
| CN108964398A (en) | A kind of side circular hole formula high power density joint permanent magnetic brushless | |
| CN106988722A (en) | Directional type rotary steering system eccentric shaft motor speed control method | |
| CN1275257A (en) | Method for the starting and steady-state supply of a permanent-magnet synchronous motor particularly for driving hydraulic pump | |
| CN105229915B (en) | For the method for the variable electro-motor of starting speed | |
| CN204413166U (en) | A kind of closed-loop control servo-drive electro spindle with deceleration device | |
| CN104393716B (en) | A kind of AC servo motor assembly technology with brake | |
| CN207732524U (en) | A kind of servo motor laminated stator | |
| TW202138686A (en) | Magnetic levitation-type pump | |
| CN207719912U (en) | A kind of servo motor rotor | |
| CN113458606B (en) | Speed following method of metal surface hardening system based on laser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180810 |