CN115149713A - High-thrust direct screw rod output servo electric cylinder - Google Patents
High-thrust direct screw rod output servo electric cylinder Download PDFInfo
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- CN115149713A CN115149713A CN202210909331.1A CN202210909331A CN115149713A CN 115149713 A CN115149713 A CN 115149713A CN 202210909331 A CN202210909331 A CN 202210909331A CN 115149713 A CN115149713 A CN 115149713A
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- rotor core
- lead screw
- bearing
- servo electric
- encoder
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
Abstract
According to the high-thrust direct lead screw output servo electric cylinder, the rotor structure is arranged in the motor shell in a rotating mode, the lead screw is in threaded connection with the rotor structure, the lead screw cannot rotate in the circumferential direction under the action of the limiting piece (the limiting piece can be a workbench or a tool or the like connected with the lead screw), when the servo electric cylinder works, the rotor structure rotates in the circumferential direction in the motor, threads of a rod body of the lead screw slide along the threads in the rotor structure, and therefore the lead screw is driven to reciprocate in the axial direction of the lead screw; the design of adopting rotor structure and lead screw lug connection makes servo electric jar save drive parts such as motor output shaft, shaft coupling, synchronizing wheel and hold-in range, and the installation space of servo electric jar that reduces has reduced servo electric jar's structure volume, has increased output efficiency, has reduced transmission error, has simple structure's advantage.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a high-thrust direct lead screw output servo electric cylinder.
Background
An electric cylinder in the prior art generally comprises a driving motor and a jack with a screw rod structure (hereinafter referred to as an electric cylinder body), wherein the electric cylinder body comprises a screw rod and a screw rod nut sleeve, an output shaft and a rotation stopping structure, the output end of the driving motor is connected with the screw rod structure through a coupler or a synchronous belt, when the driving motor works, the motor output shaft drives the screw rod in the electric cylinder body to rotate, the screw rod drives the output shaft of the screw rod connected to the nut sleeve to move linearly when rotating, and the output shaft can drive a sliding block to move telescopically.
Above-mentioned servo electric cylinder is connected with servo motor through shaft coupling or hold-in range owing to with the electric cylinder body, like this, synchronizing wheel, hold-in range, shaft coupling and the required structure of fixed these structures all need occupy great installation space in the electric cylinder, and driven clearance error is great between each spare part simultaneously to and the energy consumption is higher.
Rotor structure in the servo electric cylinder on the existing market is usually overlapped by the multi-disc silicon steel sheet, and the centre penetrates the mandrel tight fit and forms, and the production degree of difficulty is big, and manufacturing cost is higher, is difficult to increase rotor structure's bulk size.
At present, a small-power stepping motor is a lead screw stepping motor with a lead screw directly penetrating through the center of the motor, and the motor is an asynchronous motor, is small in power and can only be used on small equipment with small thrust.
The invention is researched and proposed aiming at the defects of the prior art.
Disclosure of Invention
The technical problem of complicated structure of the servo electric cylinder in the prior art is solved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a servo electric jar of direct lead screw output of high thrust, includes motor body and lead screw, its characterized in that: the motor body comprises a motor shell, a stator structure and a rotor structure, the rotor structure is rotatably connected in the motor shell, the stator structure is fixedly arranged in the motor shell, the stator structure is hollow, and the stator structure is sleeved on the outer side of the rotor structure;
one end of the motor shell is provided with a first opening, one end of the screw rod extends into the motor shell through the first opening and is in threaded connection with the rotor structure, the other end of the screw rod extends out of the motor shell and is connected with a limiting part for limiting the rotation of the screw rod, and when the rotor structure rotates circumferentially, the screw rod can be driven to reciprocate along the axial direction.
In order to ensure that the rotor structure can stably drive the screw rod to reciprocate along the axial direction, the rotor structure comprises a rotor core body, a magnet piece and a screw rod nut sleeve, the rotor core body is of an integral structure, the magnet piece is fixedly arranged on the outer side wall of the rotor core body, the rotor core body is in a hollow shape, the screw rod nut sleeve is embedded on one end of the rotor core body facing to the first opening, and the screw rod extends into the rotor core body through the screw rod nut sleeve and is in threaded connection with the screw rod nut sleeve.
In order to improve the stability of the magnet assembled on the rotor core, the magnet pieces are a plurality of plate-shaped magnet groups, a plurality of mounting grooves are formed in the periphery of the outer side wall of the rotor core, a second opening is formed in one end of each mounting groove and used for assembling the plate-shaped magnet groups into the corresponding mounting grooves, and magnet retaining rings are arranged on the rotor core and used for locking the plate-shaped magnet groups in the mounting grooves;
and sliding grooves are respectively arranged on two sides of each mounting groove, and raised strips matched with the sliding grooves are respectively arranged on each plate-shaped magnet group.
In order to improve the reliability of the rotor core body in the circumferential rotation in the motor stator, the motor shell comprises a stator shell and a bearing fixing seat which are sequentially connected, the stator structure is fixed in the stator shell, and the first opening is positioned on the bearing fixing seat; one end of the rotor core body, which is provided with the screw rod nut sleeve, extends into the bearing fixing seat, and a bearing assembly is arranged between the bearing fixing seat and the rotor core body.
In order to ensure that the bearing assembly can assist the rotor core to rotate in the motor housing along the circumferential direction, the bearing assembly is including locating a plurality of bearings in the bearing fixing base, each the bearing all overlap and establish the outside at the rotor core, one of the bearing fixing base is connected with the stator housing is served and is equipped with first spacing arch, be equipped with fixed flap on the other end of bearing fixing base, it is a plurality of the bearing be located between fixed flap and the first spacing arch, the bearing that is located the top offsets with first spacing bellied bottom side, the bearing that is located the bottom offsets with the top side of fixed flap.
In order to ensure that the bearing can be stably assembled between the bearing fixing seat and the rotor core body, a second limiting bulge is arranged on the rotor core body, the second limiting bulge and the first limiting bulge are arranged in the same height, a gap is formed between the second limiting bulge and the first limiting bulge, and the bottom side of the second limiting bulge abuts against the bearing positioned at the top;
and a bearing pressing plate is arranged at one end of the rotor core body close to the fixed seat cover, the bearing pressing plate and the fixed seat cover are arranged at the same height, a gap is formed between the bearing pressing plate and the fixed seat cover, and the top side of the bearing pressing plate is abutted against a bearing positioned at the lowest part.
In order to improve the transmission precision control of the servo electric cylinder, an encoder assembly is arranged between the motor shell and the rotor core body.
In order to ensure that the encoder assembly can normal operating, the encoder assembly includes encoder casing, encoder body and encoder installation axle, the encoder casing sets firmly and keeps away from first open-ended at motor housing and serves, the encoder body sets firmly in the encoder casing, encoder casing and encoder body fixed connection are passed to the one end of encoder installation axle, the other end and the rotor core fixed connection of encoder installation axle.
In order to ensure the integral strength of the rotor core, the rotor core is made of No. 45 steel materials.
The beneficial effects of the invention are:
according to the high-thrust direct lead screw output servo electric cylinder, the rotor structure is arranged in the motor shell in a rotating mode, the lead screw is in threaded connection with the rotor structure, the lead screw cannot rotate circumferentially under the action of the limiting piece (the limiting piece can be a workbench or a tool or the like connected with the lead screw), when the servo electric cylinder works, the rotor structure rotates circumferentially in the motor, threads of a lead screw rod body slide along the threads in the rotor structure, and therefore the lead screw is driven to reciprocate in the axial direction of the lead screw; the design of adopting rotor structure and lead screw lug connection makes servo electric jar save drive parts such as motor output shaft, shaft coupling, synchronizing wheel and hold-in range, and the installation space of servo electric jar that reduces has reduced servo electric jar's structure volume, has increased output efficiency, has reduced transmission error, has simple structure's advantage.
The invention will be further described with reference to the drawings and the following detailed description.
Drawings
FIG. 1 is a schematic diagram of a high torque output servo cylinder according to the present invention;
FIG. 2 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a second schematic diagram of the structure of the servo electric cylinder with large torque output according to the present invention;
FIG. 4 is one of the exploded schematic views of the high torque output servo cylinder of the present invention;
FIG. 5 is an enlarged schematic view of portion B labeled in FIG. 4;
FIG. 6 is a second exploded view of the high torque output servo cylinder of the present invention;
FIG. 7 is a third schematic structural diagram of a high torque output servo cylinder according to the present invention;
fig. 8 is a schematic cross-sectional view taken along line C-C of fig. 7.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to fig. 3, the high-thrust direct screw rod output servo electric cylinder in the embodiment includes a motor body 1000 and a screw rod 8, and is characterized in that: the motor body 1000 comprises a motor shell 1, a stator structure 2 and a rotor structure 3, wherein the rotor structure 3 is rotatably connected in the motor shell 1, the stator structure 2 is fixedly arranged in the motor shell 1, the stator structure 2 is hollow, and the stator structure 2 is sleeved outside the rotor structure 3;
one end of the motor shell 1 is provided with a first opening, one end of the screw rod 8 extends into the motor shell 1 through the first opening and is in threaded connection with the rotor structure 3, the other end of the screw rod 8 extends out of the motor shell 1 and is connected with a limiting part for limiting the rotation of the screw rod 8, and when the rotor structure 3 rotates in the circumferential direction, the screw rod 8 can be driven to reciprocate along the axial direction; according to the high-thrust direct lead screw output servo electric cylinder, the rotor structure is arranged in the motor shell in a rotating mode, the lead screw is in threaded connection with the rotor structure, the lead screw cannot rotate in the circumferential direction under the action of the limiting piece (the limiting piece can be a workbench or a tool or the like connected with the lead screw), when the servo electric cylinder works, the rotor structure rotates in the circumferential direction in the motor, threads of a rod body of the lead screw slide along the threads in the rotor structure, and therefore the lead screw is driven to reciprocate in the axial direction of the lead screw; the design of adopting rotor structure and lead screw lug connection makes servo electric jar save transmission parts such as motor output shaft, shaft coupling, synchronizing wheel and hold-in range, and the installation space of servo electric jar that reduces has reduced servo electric jar's structure volume, has increased output efficiency, has reduced transmission error, has simple structure's advantage.
As shown in fig. 2 and 4 to 8, the rotor structure 3 in the present embodiment includes a rotor core 31, a magnet member 32, and a screw-nut sleeve 33, wherein the rotor core 31 is an integral structure, the magnet member 32 is fixedly arranged on an outer side wall of the rotor core 31, the rotor core 31 is hollow, the screw-nut sleeve 33 is embedded in an end of the rotor core 31 facing the first opening, the screw 8 extends into the rotor core 31 through the screw-nut sleeve 33 and is in threaded connection with the screw-nut sleeve 33;
specifically, the stator structure includes a stator core and a coil (not shown in the figure) wound on the stator core, as shown in fig. 6 and 8, the rotor core is a hollow cylinder, and the rotor core is an integral structure, one end of the screw-nut sleeve is provided with an installation part, the installation part is provided with a plurality of first threaded holes, the rotor core is provided with second threaded holes corresponding to the first threaded holes, the screw-nut sleeve is embedded in one end of the rotor core facing the first opening, the first threaded holes in the installation part are aligned with the second threaded holes in the rotor core, and then the first threaded holes and the second threaded holes are sequentially passed through by screws, which are respectively in threaded connection with the first threaded holes and the second threaded holes, so that the screw-nut sleeve is fixed on the rotor core, and the existing rotor structure formed by overlapping a plurality of silicon steel sheets is insufficient in strength, and cannot be provided with threaded holes on the rotor core, so that the rotor core can not be directly installed and connected with the screw-nut sleeve as the rotor core of the present application;
when the servo electric cylinder starts to work, the magnet piece is correspondingly matched with the coil, so that the rotor can rotate precisely in the motor shell; when the rotor core body rotates, the screw rod nut sleeve is driven to rotate at the same time, the screw rod slides along the screw thread in the screw rod nut sleeve through the screw thread on the rod body of the screw rod, so that the screw rod is driven to reciprocate along the axial direction of the screw rod, the rotor core body is of a hollow structure, the screw rod can extend into the rotor core body, the size of the screw rod assembled on the motor body is reduced, and the servo electric cylinder can be conveniently assembled at a specified position; the rotor core body is adopted to drive the screw rod nut sleeve to rotate and then drive the screw rod to move, the rotor core body is not directly connected with the screw rod, friction between the rotor core body and the screw rod is reduced, and the service life of the rotor core body is prolonged.
As shown in fig. 5, the magnet members 32 in this embodiment are a plurality of plate-shaped magnet sets 321, and a plurality of mounting slots 311 are circumferentially formed on the outer side wall of the rotor core 31, so that the plate-shaped magnet sets can fully cover the outer side wall of the rotor core, thereby improving the matching accuracy between the magnet members and the stator structure;
a second opening 312 is formed in one end of each mounting groove 311, sliding grooves 314 are formed in two sides of each mounting groove 311, and protruding strips 322 which are in sliding connection with the sliding grooves 314 are formed in each plate-shaped magnet group 321, so that the plate-shaped magnet groups can slide into the mounting grooves through the second openings through the matching of the sliding grooves and the protruding strips, the plate-shaped magnet groups are conveniently assembled in the mounting grooves, and then the second openings 312 are sealed through magnet retaining rings 313 on the rotor core 31, and the plate-shaped magnet groups 321 are locked in the mounting grooves 311; specifically, the structure formed by the plate-shaped magnet group and the convex strips arranged on the two sides of the plate-shaped magnet group is in a T-like shape.
Preferably, the set of plate-shaped magnet groups in this embodiment is composed of three magnet pieces arranged in the vertical direction, and the arrangement number of the magnet pieces on the set of plate-shaped magnet groups can be determined according to the volume of the rotor core.
As shown in fig. 1 and fig. 3, the motor housing 1 in this embodiment includes a stator housing 12 and a bearing fixing seat 13, which are connected in sequence, the stator structure 2 is fixed in the stator housing 12, and the first opening is located on the bearing fixing seat 13;
one end of the rotor core body 31, which is provided with the feed screw nut sleeve 33, extends into the bearing fixing seat 13, and a bearing assembly is arranged between the bearing fixing seat 13 and the rotor core body 31; when the rotor core rotates, the bearing assembly can reduce the friction between the rotor core and the bearing fixing seat and reduce the abrasion between the rotor core and the bearing fixing seat; and can carry on spacingly to the rotor core, prevent to rock about the rotor core circumferential direction time-spent, make the rotor core can steady rotation to improve rotor core 31 in motor housing 1 internal circumferential direction pivoted reliability.
As shown in fig. 2 and 4, the bearing assembly in this embodiment includes a plurality of bearings 14 disposed in a bearing fixing seat 13, each of the bearings 14 is sleeved outside the rotor core 31, a first limiting protrusion 131 is disposed on one end of the bearing fixing seat 13 connected to the stator housing 12, a fixing seat cover 15 is disposed on the other end of the bearing fixing seat 13, the plurality of bearings 14 are located between the fixing seat cover 15 and the first limiting protrusion 131, the bearing 14 located at the uppermost position abuts against the bottom side of the first limiting protrusion 131, and the bearing 14 located at the lowermost position abuts against the top side of the fixing seat cover 15; by adopting the design, the plurality of bearings can fill the space between the bearing fixing seat and the rotor core body, the supporting effect of the bearings on the rotor core body is improved, the friction of the rotor core body during circumferential rotation is reduced, and the transmission precision is ensured.
As shown in fig. 2 and 4, the rotor core 31 in this embodiment is provided with a second limiting protrusion 315, the second limiting protrusion 315 is disposed at the same height as the first limiting protrusion 131, preferably, the bottom side of the second limiting protrusion in this embodiment is disposed at the same height as the bottom side of the first limiting protrusion 131, so that the bottom side of the first limiting protrusion 131 and the bottom side of the second limiting protrusion 315 respectively abut against the top side of the uppermost bearing 14 to jointly limit the uppermost bearing;
a bearing pressure plate 316 is arranged at one end of the rotor core body 31 close to the fixed seat cover 15, the bearing pressure plate 316 and the fixed seat cover 15 are arranged at the same height, preferably, the top side of the bearing pressure plate 316 in the embodiment is arranged at the same height as the top side of the fixed seat cover 15, so that the top side of the bearing pressure plate 316 and the top side of the fixed seat cover 15 are respectively abutted against the bottom side of the bearing 14 positioned at the lowest part to jointly limit the bearing at the lowest part;
a gap is formed between the second limiting bulge and the first limiting bulge, and a gap is formed between the bearing pressing plate and the fixed seat cover, so that the situations of friction collision and the like between the rotor core and the bearing fixed seat during circumferential rotation are avoided;
specifically, be equipped with the third screw hole corresponding with first screw hole on the bearing clamp plate, when the installation, establish the bearing clamp plate cover in the outside of screw-nut cover, the one end of screw-nut cover is inlayed and is established at the rotor core one towards first open-ended, and the bearing clamp plate is located between screw-nut cover and the rotor core, and one side of bearing clamp plate offsets with the installation department of screw-nut cover, the opposite side and the rotor core tip of bearing clamp plate offset, align corresponding first screw hole, second screw hole and third screw hole, then pass first screw hole, third screw hole and second screw hole in proper order through the screw, the screw respectively with first screw hole, third screw hole and second screw hole threaded connection to fix screw-nut cover and bearing clamp plate on the rotor core.
As shown in fig. 1 and 2, an encoder assembly 4 is provided between the motor housing 1 and the rotor core 31 in the present embodiment; the encoder assembly can feed back signals such as the position and the speed of the rotor core body to the driver, closed-loop control is achieved, the risk that the servo electric cylinder is out of step is eliminated, the stability of the electric cylinder control system is enhanced, and the transmission precision of the servo electric cylinder is enhanced.
As shown in fig. 2 and 4, the encoder assembly 4 in this embodiment includes an encoder housing 41, an encoder body 42, and an encoder mounting shaft 43, the encoder housing 41 is fixedly disposed at an end of the motor casing 1 away from the first opening, the encoder housing 41 includes an encoder upper shell and an encoder lower shell, so as to facilitate the assembly of the encoder body 42 in the encoder housing 41, and the encoder housing can prevent impurities such as dust from entering the encoder housing and affecting the encoder body 4;
one end of the encoder mounting shaft 43 penetrates through the encoder shell 41 to be fixedly connected with the encoder body 42, and the other end of the encoder mounting shaft 43 is fixedly connected with the rotor core body 31; the encoder body can be through the rotational parameter of encoder installation axle response rotor core to the rotational parameter of control rotor core through the control system control rotor core of electric jar, thereby realize closed-loop control.
Preferably, if the maximum effective stroke of the servo electric cylinder needs to be increased, the encoder can adopt a hollow encoder.
Specifically, the rotor core body 31 in the present embodiment is made of a 45 # steel material; the No. 45 steel has high strength, good deformation resistance, good mechanical property, processing property and heat treatment property, is low in price, facilitates processing of the rotor core body and reduction of manufacturing cost of the rotor core body, the rotor core body made of the material has good strength, and is convenient to process into the rotor core body with larger volume, more magnetic fluxes are generated, and therefore larger rotating force is generated, the torque is larger, and the output torque of the servo electric cylinder is improved.
The working principle of the servo electric cylinder of the invention is as follows: when the servo electric cylinder starts to work, the magnet element on the rotor core body is correspondingly matched with the coil on the stator core body so as to drive the rotor core body to rotate in the stator core body and simultaneously drive the feed screw nut sleeve on the rotor core body to rotate, and the feed screw slides along the thread in the feed screw nut sleeve through the thread on the screw rod body (namely the thread of the feed screw rod body slides along the nut sleeve connected with the rotor), so that the feed screw is driven to reciprocate along the axial direction of the feed screw.
Specifically, the high-thrust direct screw output servo electric cylinder in the embodiment includes a motor body and a screw. The motor body comprises a motor structural part, a stator winding, a rotor, an encoder and a bearing. The screw rod is the electric cylinder body which is arranged in the motor and is directly combined with the rotor into a whole.
The key technology of the invention is to improve the rotor of the common servo motor, and the original rotor formed by superposing silicon steel sheets and connecting the silicon steel sheets in series through a central shaft is changed into an integral steel structure rotating body.
The technical contents of the present invention are further illustrated by the examples, so as to facilitate the reader to understand more easily, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation made by the present invention is protected by the present invention. The protection scope of the invention is subject to the claims.
Claims (9)
1. The utility model provides a servo electric jar of direct lead screw output of high thrust, includes motor body (1000) and lead screw (8), its characterized in that: the motor body (1000) comprises a motor shell (1), a stator structure (2) and a rotor structure (3), wherein the rotor structure (3) is rotatably connected in the motor shell (1), the stator structure (2) is fixedly arranged in the motor shell (1), the stator structure (2) is hollow, and the stator structure (2) is sleeved on the outer side of the rotor structure (3);
the one end of motor housing (1) is equipped with first opening, the one end of lead screw (8) is extended to motor housing (1) in through first opening, and with rotor structure (3) threaded connection, the other end of lead screw (8) extends outside motor housing (1), and is connected with and limits its pivoted locating part, when rotor structure (3) circumferential direction, can drive lead screw (8) along axial direction reciprocating motion.
2. The high thrust direct screw output servo electric cylinder according to claim 1, characterized in that: rotor structure (3) include rotor core (31), magnet spare (32) and lead screw nut cover (33), rotor core (31) are overall structure, magnet spare (32) set firmly at rotor core (31) lateral wall, rotor core (31) are the cavity form, lead screw nut cover (33) inlay and establish on rotor core (31) one end towards first open-ended, lead screw (8) extend to in rotor core (31) through lead screw nut cover (33) to with lead screw nut cover (33) threaded connection.
3. The high thrust direct screw output servo electric cylinder according to claim 2, characterized in that: the magnet elements (32) are a plurality of plate-shaped magnet groups (321), a plurality of mounting grooves (311) are formed in the periphery of the outer side wall of the rotor core body (31), a second opening (312) is formed in one end of each mounting groove (311), the second openings (312) are used for enabling the plate-shaped magnet groups (321) to be assembled in the corresponding mounting grooves (311), a magnet retainer ring (313) is arranged on the rotor core body (31), and the magnet retainer ring (313) is used for locking the plate-shaped magnet groups (321) in the mounting grooves (311);
sliding grooves (314) are respectively formed in two sides of each mounting groove (311), and protruding strips (322) which are in sliding connection with the sliding grooves (314) are respectively arranged on each plate-shaped magnet group (321).
4. The high thrust direct screw output servo electric cylinder according to claim 2, characterized in that: the motor shell (1) comprises a stator shell (12) and a bearing fixing seat (13) which are connected in sequence, the stator structure (2) is fixedly arranged in the stator shell (12), and the first opening is positioned on the bearing fixing seat (13); one end, provided with a feed screw nut sleeve (33), of the rotor core body (31) extends into the bearing fixing seat (13), a bearing assembly is arranged between the bearing fixing seat (13) and the rotor core body (31), and the bearing assembly is used for improving the reliability of the circumferential rotation of the rotor core body (31) in the motor shell (1).
5. The high thrust direct screw output servo electric cylinder according to claim 4, wherein: the bearing assembly is including locating a plurality of bearings (14) in bearing fixing base (13), each bearing (14) all overlap and establish the outside at rotor core (31), one of bearing fixing base (13) and stator shell (12) are connected serves and is equipped with first spacing arch (131), be equipped with fixed flap (15) on the other end of bearing fixing base (13), it is a plurality of bearing (14) be located between fixed flap (15) and first spacing arch (131), bearing (14) that are located the top offset with the bottom side of first spacing arch (131), bearing (14) that are located the bottom offset with the top side of fixed flap (15).
6. The high thrust direct screw output servo electric cylinder according to claim 5, characterized in that: a second limiting bulge (315) is arranged on the rotor core body (31), the second limiting bulge (315) and the first limiting bulge (131) are arranged in a same height mode, a gap is formed between the second limiting bulge (315) and the first limiting bulge (131), and the bottom side of the second limiting bulge (315) abuts against the bearing (14) located at the top;
and a bearing pressing plate (316) is arranged at one end of the rotor core body (31) close to the fixed seat cover (15), the bearing pressing plate (316) and the fixed seat cover (15) are arranged at the same height, a gap is formed between the bearing pressing plate and the fixed seat cover, and the top side of the bearing pressing plate (316) is abutted to the bearing (14) located at the lowest part.
7. The high thrust direct screw output servo electric cylinder according to claim 2, characterized in that: an encoder assembly (4) is arranged between the motor shell (1) and the rotor core body (31).
8. The high thrust direct screw output servo electric cylinder according to claim 7, characterized in that: encoder subassembly (4) include encoder casing (41), encoder body (42) and encoder installation axle (43), encoder casing (41) set firmly and keep away from first open-ended one at motor housing (1) and serve, encoder body (42) set firmly in encoder casing (41), encoder casing (41) and encoder body (42) fixed connection are passed to the one end of encoder installation axle (43), the other end and rotor core (31) fixed connection of encoder installation axle (43).
9. The high thrust direct screw output servo electric cylinder according to claim 2, characterized in that: the rotor core body (31) is made of No. 45 steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210909331.1A CN115149713A (en) | 2022-07-29 | 2022-07-29 | High-thrust direct screw rod output servo electric cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210909331.1A CN115149713A (en) | 2022-07-29 | 2022-07-29 | High-thrust direct screw rod output servo electric cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115149713A true CN115149713A (en) | 2022-10-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210909331.1A Pending CN115149713A (en) | 2022-07-29 | 2022-07-29 | High-thrust direct screw rod output servo electric cylinder |
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| CN (1) | CN115149713A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116667593A (en) * | 2023-04-18 | 2023-08-29 | 浙江德欧电气技术股份有限公司 | Servo motor for precise cutting |
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2022
- 2022-07-29 CN CN202210909331.1A patent/CN115149713A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116667593A (en) * | 2023-04-18 | 2023-08-29 | 浙江德欧电气技术股份有限公司 | Servo motor for precise cutting |
| CN116667593B (en) * | 2023-04-18 | 2024-01-30 | 浙江德欧电气技术股份有限公司 | Servo motor for precise cutting |
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