CN111872727A - Self-driven screw nut pair - Google Patents
Self-driven screw nut pair Download PDFInfo
- Publication number
- CN111872727A CN111872727A CN202010818107.2A CN202010818107A CN111872727A CN 111872727 A CN111872727 A CN 111872727A CN 202010818107 A CN202010818107 A CN 202010818107A CN 111872727 A CN111872727 A CN 111872727A
- Authority
- CN
- China
- Prior art keywords
- nut
- nut seat
- screw rod
- lead screw
- self
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000006698 induction Effects 0.000 claims abstract description 9
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 7
- 238000003754 machining Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/28—Electric drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
- B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
- B23Q5/402—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw in which screw or nut can both be driven
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention relates to a self-driven lead screw and nut pair which is used for driving a sliding plate of a numerical control machine tool to longitudinally move and comprises a base and a nut seat fixedly connected with the sliding plate, wherein a lead screw which traverses the center of the nut seat is fixed on the base, a nut which is in threaded transmission with the lead screw is installed in the nut seat, a motor rotor is installed on the outer ring of the nut in an interference manner, a motor stator with an induction coil is installed in an inner hole of the nut seat in an interference manner, and the induction coil after being electrified drives the motor rotor to rotate so as to synchronously realize the rotation. The nut seat is internally provided with the motor rotor and the motor stator, the nut is driven to rotate by the rotation of the motor rotor after the power is on, so that the longitudinal linear motion of the sliding plate is realized, and the screw rod nut pair is not required to be driven by a servo motor, so that the screw rod nut pair has a compact transmission structure, is simple and convenient to install, saves the cost, effectively reduces the installation error of the screw rod, and improves the transmission precision of the screw rod nut pair.
Description
Technical Field
The invention relates to the technical field of machine tool machining, in particular to a self-driven lead screw and nut pair for driving a sliding plate of a numerical control machine tool to move longitudinally.
Background
In the field of machining of numerical control machine tools, components such as a sliding plate, a spindle box, a rotary table and the like of a machine tool generally adopt a lead screw and nut pair to realize linear motion. Traditional screw nut pair adopts servo motor directly to link the drive more, and the transmission connecting piece is more, and overall structure is numerous and diverse, and the installation requirement is than higher, exists certain installation error during especially lead screw installation and easily causes the transmission precision not enough, influences the machining precision of digit control machine tool.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects in the prior art, the invention provides the self-driven lead screw nut pair which is compact in structure and beneficial to improving the transmission precision.
The technical scheme adopted by the invention for solving the technical problems is as follows: a self-driven lead screw and nut pair is used for driving a slide plate of a numerical control machine tool to longitudinally move and comprises a base and a nut seat fixedly connected with the slide plate, a lead screw traversing the center of the nut seat is fixed on the base, a nut in threaded transmission with the lead screw is installed in the nut seat, a motor rotor is installed on the outer ring of the nut in an interference mode, a motor stator with an induction coil is installed in the inner hole of the nut seat in an interference mode, and the induction coil after being electrified drives the motor rotor to rotate so as to synchronously realize nut rotation.
Preferably, a pair of supports is fixed on the base at a distance, and two ends of the screw rod are fixed with the supports through positioning pins.
Specifically, a front bearing and a rear bearing are respectively arranged between an inner hole of a nut seat and an outer ring of the nut seat which are positioned at two sides of the motor stator, a flange cover which is pressed against the outer ring of the front bearing is fixed on the outer side surface of the nut seat at the side of the front bearing, and the front end of the nut is in threaded connection with a locking nut which is pressed on the inner ring of the front bearing.
Furthermore, an inner spacer sleeve is arranged between the locking nut and the front bearing inner ring.
The invention has the beneficial effects that: the nut seat is internally provided with the motor rotor and the motor stator, the nut is driven to rotate by the rotation of the motor rotor after the power is on, so that the longitudinal linear motion of the sliding plate is realized, and the screw rod nut pair is not required to be driven by a servo motor, so that the screw rod nut pair has a compact transmission structure, is simple and convenient to install, saves the cost, effectively reduces the installation error of the screw rod, and improves the transmission precision of the screw rod nut pair.
Drawings
The invention is further described with reference to the following figures and embodiments.
Fig. 1 is a schematic structural view of the present invention.
In the figure: 1. the novel motor comprises a base, 2 parts of a nut seat, 3 parts of a screw rod, 4 parts of a nut, 5 parts of a motor rotor, 6 parts of a motor stator, 7 parts of a support, 8 parts of a positioning pin, 9 parts of a front bearing, 10 parts of a rear bearing, 11 parts of a flange cover, 12 parts of a locking nut and 13 parts of an inner spacer.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The self-driven lead screw and nut pair shown in figure 1 is used for driving a sliding plate 14 of a numerical control machine tool to move longitudinally, and comprises a base 1, a nut seat 2 fixedly connected with the sliding plate 14 and a lead screw 3, wherein a pair of supporting seats 7 are fixed on the base 1 at intervals, the lead screw 3 penetrates through the center of the nut seat 2, two ends of the lead screw 3 are fixed with the supporting seats 7 through positioning pins 8, and a nut 4 in threaded transmission with the lead screw 3 is installed in the nut seat 2.
A motor rotor 5, a motor stator 6, a front bearing 9 and a rear bearing 10 are arranged in a cavity formed between the outer ring of the nut 4 and the inner hole of the nut seat 2, wherein the motor stator 6 is installed in interference fit with the inner hole of the nut seat 2, an induction coil is wound on the motor stator 6, and the motor rotor 5 is installed in interference fit with the outer ring of the nut 4 and corresponds to the position of the motor stator 6.
Front bearing 9, rear bearing 10 install respectively between 2 holes of nut seat and the 4 outer lanes of nut of motor stator 6 both sides, 2 rear ends of nut seat have the side opening that the diameter is less than its hole diameter, and 4 rear ends of nut have the step flange, have the clearance between this step flange periphery and the side opening, and rear bearing 10's outer lane pastes tightly the side opening inner wall, rear bearing 10's inner circle pastes tight nut 4's step flange medial surface to realize the location to rear bearing 10.
A flange cover 11 is fixed on the outer side surface of the nut seat 2 on one side of the front bearing 9, an inner convex ring of the flange cover 11 presses the outer ring of the front bearing 9, the front end part of the nut 4 is provided with an external thread and is in threaded connection with a locking nut 12, an inner spacer 13 is arranged between the locking nut 12 and the inner ring of the front bearing 9, and the locking nut 12 pushes the inner spacer 13 to be tightly pressed on the inner ring of the front bearing 9.
When the screw driver is used, the induction coil of the motor stator 6 is electrified, the electrified induction coil drives the motor rotor 5 to rotate, the rotation of the motor rotor 5 drives the nut 4 to synchronously rotate, and the nut 4 longitudinally moves along the axis of the screw rod 3 through the thread transmission with the screw rod 3, so that the sliding plate 14 is driven to linearly move longitudinally along the screw rod.
Because the motor rotor 5 and the motor stator 6 are arranged in the nut seat 2, the nut 4 is driven to rotate by the rotation of the motor rotor 5 after the power is on, and the longitudinal linear motion of the sliding plate 14 is realized, the driving of a servo motor is not needed, the cost is saved, the transmission structure is compact, the installation is simple and convenient, the installation error of the screw rod 3 can be effectively reduced, and the transmission precision of the screw rod nut pair is improved.
In light of the foregoing description of preferred embodiments according to the invention, it is clear that many changes and modifications can be made by the person skilled in the art without departing from the scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. The utility model provides a self-driven lead screw nut is vice for the longitudinal motion of drive digit control machine tool slide (14), includes base (1), with nut seat (2) that slide (14) link firmly, characterized by: the nut seat is characterized in that a screw rod (3) penetrating through the center of a nut seat (2) is fixed on the base (1), a nut (4) in threaded transmission with the screw rod (3) is installed in the nut seat (2), a motor rotor (5) is installed on the outer ring of the nut (4) in an interference mode, a motor stator (6) with an induction coil is installed in the inner hole of the nut seat (2) in an interference mode, and the induction coil after being electrified drives the motor rotor (5) to rotate so as to synchronously realize rotation of the nut (4).
2. The self-driving lead screw nut assembly as defined in claim 1 wherein: a pair of supports (7) are fixed on the base (1) at intervals, and two ends of the screw rod (3) are fixed with the supports (7) through positioning pins (8).
3. The self-driving lead screw nut assembly as defined in claim 1 wherein: a front bearing (9) and a rear bearing (10) are respectively arranged between inner holes of nut seats (2) on two sides of a motor stator (6) and an outer ring of a nut (4), a flange cover (11) which is used for pressing the outer ring of the front bearing (9) is fixed on the outer side surface of the nut seat (2) on the side of the front bearing (9), and a locking nut (12) which is tightly pressed on the inner ring of the front bearing (9) is in threaded connection with the front end of the nut (4).
4. The self-driving lead screw nut assembly of claim 3, wherein: an inner spacer sleeve (13) is arranged between the lock nut (12) and the inner ring of the front bearing (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010818107.2A CN111872727A (en) | 2020-08-14 | 2020-08-14 | Self-driven screw nut pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010818107.2A CN111872727A (en) | 2020-08-14 | 2020-08-14 | Self-driven screw nut pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111872727A true CN111872727A (en) | 2020-11-03 |
Family
ID=73202764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010818107.2A Pending CN111872727A (en) | 2020-08-14 | 2020-08-14 | Self-driven screw nut pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111872727A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2251221Y (en) * | 1996-01-25 | 1997-04-02 | 重庆再力机电控制技术研究所 | Linear step electric machine |
| KR20060071481A (en) * | 2004-12-22 | 2006-06-27 | 두산인프라코어 주식회사 | Built in motor linear motion device |
| CN205096924U (en) * | 2015-10-30 | 2016-03-23 | 苏州陈那自动化技术有限公司 | Screw actuation structure |
| CN207218450U (en) * | 2017-07-11 | 2018-04-10 | 常州市鼎智机电有限公司 | Fixed shaft type lead screw motor |
| CN210524549U (en) * | 2019-07-17 | 2020-05-15 | 中铁五局集团有限公司城市轨道交通工程分公司 | High-precision low-speed large-torque nut driving feeding device |
| CN212385088U (en) * | 2020-08-14 | 2021-01-22 | 常州市德速机械有限公司 | Self-driven screw nut pair |
-
2020
- 2020-08-14 CN CN202010818107.2A patent/CN111872727A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2251221Y (en) * | 1996-01-25 | 1997-04-02 | 重庆再力机电控制技术研究所 | Linear step electric machine |
| KR20060071481A (en) * | 2004-12-22 | 2006-06-27 | 두산인프라코어 주식회사 | Built in motor linear motion device |
| CN205096924U (en) * | 2015-10-30 | 2016-03-23 | 苏州陈那自动化技术有限公司 | Screw actuation structure |
| CN207218450U (en) * | 2017-07-11 | 2018-04-10 | 常州市鼎智机电有限公司 | Fixed shaft type lead screw motor |
| CN210524549U (en) * | 2019-07-17 | 2020-05-15 | 中铁五局集团有限公司城市轨道交通工程分公司 | High-precision low-speed large-torque nut driving feeding device |
| CN212385088U (en) * | 2020-08-14 | 2021-01-22 | 常州市德速机械有限公司 | Self-driven screw nut pair |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No.12 workshop, 377 Wuyi South Road, Wujin national high tech Industrial Development Zone, Changzhou City, Jiangsu Province 213000 Applicant after: Jiangsu Desu Intelligent Machinery Co.,Ltd. Address before: No.12 workshop, No.337 Wuyi South Road, Wujin national high tech Industrial Development Zone, Changzhou City, Jiangsu Province 213000 Applicant before: CHANGZHOU DESU MACHINERY Co.,Ltd. |