CN116667593B - Servo motor for precise cutting - Google Patents
Servo motor for precise cutting Download PDFInfo
- Publication number
- CN116667593B CN116667593B CN202310425184.5A CN202310425184A CN116667593B CN 116667593 B CN116667593 B CN 116667593B CN 202310425184 A CN202310425184 A CN 202310425184A CN 116667593 B CN116667593 B CN 116667593B
- Authority
- CN
- China
- Prior art keywords
- output shaft
- sleeve
- limited slip
- thread sleeve
- servo motor
- 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.)
- Active
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 21
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 32
- 238000003860 storage Methods 0.000 claims description 32
- 238000001179 sorption measurement Methods 0.000 claims description 26
- 238000006073 displacement reaction Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 3
- 230000033001 locomotion Effects 0.000 abstract description 14
- 239000002131 composite material Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 18
- 238000003754 machining Methods 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- H02K11/22—Optical devices
-
- 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
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
- H02K7/1021—Magnetically influenced friction brakes
- H02K7/1023—Magnetically influenced friction brakes using electromagnets
- H02K7/1025—Magnetically influenced friction brakes using electromagnets using axial electromagnets with generally annular air gap
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention provides a servo motor for precise cutting, and belongs to the technical field of motors. The motor comprises a shell, a stator, a rotor, a shaft sleeve and an output shaft, wherein the stator is fixed on the inner wall of the shell, the rotor is fixed outside the shaft sleeve, and the shaft sleeve is rotationally connected to the shell through a bearing; the output shaft is provided with at least one screw rod section and a spline section positioned in the middle of the output shaft, the inner hole wall of the shaft sleeve is provided with an inner spline matched with the spline section, and the output shaft can slide along the shaft sleeve axis; the casing is rotatably connected with a limited slip thread sleeve matched with the screw rod section through a bearing, the limited slip thread sleeve is rotatably connected to the casing through the bearing, a braking surface is arranged on the limited slip thread sleeve, and a magnetic braking disc capable of limiting the rotation of the limited slip thread sleeve by pressing the braking surface is arranged on the casing. The invention has the composite motion which can enable the motor to realize rotation and movement.
Description
Technical Field
The invention belongs to the technical field of motors, and relates to a servo motor for precise cutting.
Background
The servo motor in the conventional concept is actually a combination of a common motor and an encoder feedback control system and is mainly positioned by pulses, namely, the servo motor can rotate by a corresponding angle according to the received pulses, so that accurate positioning or displacement is realized, and the price of the motor with an encoder and the price of the motor without the encoder are different by several times.
In machining, a power unit for providing torque for a cutter or a workpiece to rotate has low precision requirements on a rotation angle, and has high precision requirements on translation and feeding of the cutter or the workpiece (such as movement of the cutter in the axial direction or movement of the workpiece relative to the cutter, such as control of the depth of a groove by moving the cutter in a rotating state during grooving, and the like), in the prior art, the workpiece is generally fixed, the cutter is driven to rotate by a motor, and a motor body is also driven to translate by a screw rod structure, so that feeding of the cutter is realized; in addition, the tool only rotates and does not translate, in addition, the setting of translational feeding of the workpiece is controlled, in either case, two power sources are needed, and the translational accuracy of the translational feeding is provided to directly influence the accuracy of mechanical processing; to improve the accuracy of the feed control, the power source providing the translational feed often employs linear servo motors or servo cylinders, two independent power systems increase the size of the machining equipment, and expensive servo systems increase the cost of the equipment.
Disclosure of Invention
The invention aims to solve the problems of the prior art and provide a servo motor for precise cutting, and the technical problem to be solved by the invention is how to integrate the rotation power and the translation power in the cutting process of the motor.
The aim of the invention can be achieved by the following technical scheme: the servo motor for precise cutting is characterized by comprising a shell, a stator, a rotor, a shaft sleeve and an output shaft, wherein the stator is fixed on the inner wall of the shell, the rotor is fixed outside the shaft sleeve, and the shaft sleeve is rotationally connected to the shell through a bearing; the output shaft is provided with at least one screw rod section and a spline section positioned in the middle of the output shaft, the inner hole wall of the shaft sleeve is provided with an inner spline matched with the spline section, and the output shaft can slide along the shaft sleeve axis;
the machine shell is rotatably connected with a limited slip thread sleeve matched with the screw rod section through a bearing, the limited slip thread sleeve is rotatably connected to the machine shell through the bearing, the limited slip thread sleeve is provided with a braking surface, and the machine shell is provided with a magnetic braking disc capable of limiting the rotation of the limited slip thread sleeve by pressing the braking surface.
Further, the braking surface is the conical surface, the magnetic braking disc cover is established outside limit smooth thread bush, fixed being provided with a section of thick bamboo on the casing, limit smooth thread bush rotates to be connected in the section of thick bamboo, magnetic braking disc sliding connection is in the section of thick bamboo of installing, be provided with an electromagnetism adsorption block on the casing, be provided with the reset spring that drives the electromagnetism brake disc and keep away from the electromagnetism adsorption block between magnetic braking disc and the electromagnetism adsorption block, the electromagnetism brake disc is the iron material, can drive the electromagnetism brake disc and be close to and compress tightly the braking surface after the electromagnetism adsorption block circular telegram.
Further, a liquid storage cylinder is fixedly arranged on the shell, the output shaft comprises a control end extending out of the shell and an output end extending out of the shell, the control end is positioned in the liquid storage cylinder, an oil return hole is formed in the end portion of the liquid storage cylinder and is communicated with a liquid storage tank, a flowmeter is arranged in the oil return hole, and the control end moves in the hydraulic cylinder to change the liquid storage volume in the liquid storage cylinder.
Further, the control end is rotatably connected with a slide valve through a bearing, and the slide valve is slidably connected in the liquid storage cylinder.
Further, the servo motor also comprises a control module and a feedback module, wherein the control module is used for controlling the on-off of the electromagnetic adsorption block, the on-off of the flowmeter and the rotating speed and steering of the electric control rotor; the feedback module has the functions of: calculating the liquid flow in the power-on time of the flowmeter, converting the acquired liquid flow value into a real-time displacement value of the output shaft, comparing the real-time displacement value of the output shaft with a preset output shaft displacement value, and sending an instruction for closing the flowmeter and the electromagnetic adsorption block to the control module when the real-time displacement value of the output shaft reaches the preset value.
Further, in the process of controlling the output shaft to move along the axial direction, the control module is used for frequently switching on and switching off the electromagnetic adsorption block until the real-time bit displacement of the output shaft reaches a preset value and then keeps switching off.
Further, two screw rod sections are respectively positioned at two sides of the spline section, one screw rod section is matched with the limited slip thread sleeve, the other screw rod section is matched with a concentric thread sleeve, the concentric thread sleeve is positioned at one side of the output end of the output shaft, and the concentric thread sleeve is rotationally connected to the casing through a bearing.
When the limited slip thread sleeve is allowed to rotate, the limited slip thread sleeve, the output shaft and the shaft sleeve synchronously rotate, the movement of the output shaft in the axial direction is limited, the cutter or the workpiece connected with the output end only rotates, when the limited slip thread sleeve is pressed by the electromagnetic brake disc to decelerate or stop, the speed difference between the output shaft and the limited slip thread sleeve drives the two to rotate relatively, and then the output shaft translates along the axial direction relative to the shaft sleeve, and at the moment, the cutter or the workpiece connected with the output end synchronously translates along the axial direction except the rotation, namely, the feeding is performed.
The servo control can be widely understood as feedback control, and aims to improve the running precision and the positioning precision of a moving part, the traditional servo motor adopts an encoder with a photoelectric structure, so that the cost is high, the precision or damage can be influenced by the interference of mechanical vibration, and the cost and the outline size of the equipment can be greatly increased by adopting two independent power sources to realize the rotary cutting and feeding of a workpiece; the difference between the scheme and the traditional method is obvious, the size of equipment can be greatly reduced, and the rotation power and the translation power are integrated.
It is difficult to see that during cutting, rotation and translation of the output shaft are synchronously carried out, when resistance and impact force caused by feeding in the cutting process are large, the electromagnetic adsorption block structure which is intermittently powered on and off can realize buffering of the feeding direction of the output shaft, namely, when feeding is blocked, part of feeding quantity of the output shaft can be counteracted between the magnetic brake disc and the limited slip thread sleeve in a friction mode, so that feeding is smooth.
In addition, the traditional servo motor adopts an encoder with a photoelectric structure as a signal acquisition mode, the manufacturing cost is high and is easy to damage, in machining, the displacement of a tool or a workpiece is often transmitted through a screw rod mechanism, the gap of the screw rod can cause the displacement deviation of a terminal, the actual precision is different from the precision of the encoder, therefore, the servo motor has higher rotation angle precision and positioning precision when used for rotating, but the servo motor is converted into translational motion, the output precision of the terminal can be greatly weakened in a power transmission path increased in the conversion process, in order to overcome the problem, the allowance of the screw rod mechanism is required to be corrected, however, in the conventional machining, the precision control is carried out by adopting the scheme, although the screw rod structure also exists in the scheme, in the machining, the output shaft is in an axially stressed state when the tool rotates and cuts, the screw rod mechanism is in a tight-supporting state, and the precision error caused by the cooperation of the screw rod mechanism is not existed in the process of rotating turns and angle data of the motor. The axial movement amount of the output shaft can be obtained by using the flowmeter, compared with the structure of the photoelectric encoder of the traditional servo motor, the cost is much lower, and the control precision is not low.
Drawings
Fig. 1 is a schematic structural view of the present servo motor.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is a schematic structural view of the output shaft.
In the figure, 11, a shell; 12. a stator; 13. a rotor; 14. a shaft sleeve; 2. an output shaft; 21. a screw rod section; 22. a spline section; 3. a limited slip threaded sleeve; 31. a braking surface; 32. a magnetic brake disc; 33. an electromagnetic adsorption block; 34. a return spring; 4. a mounting cylinder; 5. a liquid storage cylinder; 6. a flow meter; 7. a slide valve; 8. concentric threaded sleeves.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, 2 and 3, the servo motor for precision cutting includes a housing 11, a stator 12, a rotor 13, a sleeve 14 and an output shaft 2, the stator 12 is fixed on the inner wall of the housing 11, the rotor 13 is fixed outside the sleeve 14, and the sleeve 14 is rotatably connected to the housing 11 through a bearing; the output shaft 2 is provided with at least a screw rod section 21 and a spline section 22 positioned in the middle of the output shaft 2, the inner hole wall of the shaft sleeve 14 is provided with an inner spline matched with the spline section 22, and the output shaft 2 can slide along the axis of the shaft sleeve 14; the casing 11 is rotatably connected with a limited slip thread sleeve 3 matched with the screw rod section 21 through a bearing, the limited slip thread sleeve 3 is rotatably connected to the casing 11 through the bearing, a braking surface 31 is arranged on the limited slip thread sleeve 3, and a magnetic braking disc 32 capable of limiting the rotation of the limited slip thread sleeve 3 by abutting against the braking surface 31 is arranged on the casing 11.
The braking surface 31 is a conical surface, the magnetic braking disc 32 is sleeved outside the limited slip thread sleeve 3, the casing 11 is fixedly provided with a mounting cylinder 4, the limited slip thread sleeve 3 is rotationally connected in the mounting cylinder 4, the magnetic braking disc 32 is slidably connected in the mounting cylinder 4, the casing 11 is provided with an electromagnetic adsorption block 33, a reset spring 34 for driving the electromagnetic braking disc to be far away from the electromagnetic adsorption block 33 is arranged between the magnetic braking disc 32 and the electromagnetic adsorption block 33, the electromagnetic braking disc is made of iron, and the electromagnetic adsorption block 33 can drive the electromagnetic braking disc to be close to and compress the braking surface 31 after being electrified. The electromagnetic brake disc and the limited slip thread sleeve 3 belong to friction braking, the electromagnetic adsorption block 33 consists of an armature and a coil wound on the armature, the coil is electrified to generate adsorption force for the electromagnetic brake disc, the electromagnetic brake disc is driven to be close to the limited slip thread sleeve 3, and the limited slip thread sleeve 3 can be separated from the electromagnetic brake disc after power is off. Friction braking may in this solution provide a buffer for the feed of the output shaft 2.
The casing 11 is fixedly provided with a liquid storage cylinder 5, the output shaft 2 comprises a control end extending out of the casing 11 and an output end extending out of the casing 11, the control end is positioned in the liquid storage cylinder 5, the end part of the liquid storage cylinder 5 is provided with an oil return hole, the oil return hole is communicated with a liquid storage tank, a flowmeter 6 is arranged in the oil return hole, and the control end moves in the hydraulic cylinder to change the liquid storage volume in the liquid storage cylinder 5. The liquid in the liquid storage cylinder 5 can be hydraulic oil, because the hydraulic oil is in the normal pressure state, therefore, the compression ratio has no influence on the flow accuracy, in addition, the change of the oil temperature can cause the thermal expansion and contraction of oil, but in the scheme, when the feeding of output is not carried out, the flowmeter 6 is in a power-off state, the flow information of the inlet and outlet oil storage cylinder is not acquired, at the moment, the oil storage cylinder and the oil storage tank are communicated, the oil temperature of the oil storage cylinder and the oil storage tank can be balanced by utilizing a circulating device, the oil storage tank can be coated outside the liquid storage cylinder 5, the temperature environments of the oil storage tank and the oil storage tank are almost consistent, and the interference caused by the change of the oil temperature on the accuracy is eliminated.
In the process of acquiring the flow rate, the amount of oil flowing into and out of the reservoir tank 5 is in a direct proportion to the amount of movement output, and therefore, the displacement of the output shaft 2 can be obtained by acquiring the value.
Further, a slide valve 7 is rotatably connected to the control end through a bearing, and the slide valve 7 is slidably connected to the liquid storage cylinder 5. The slide valve 7 is a piston piece with the size larger than that of the output shaft 2, and the slide valve 7 can be arranged to enable the slide valve 7 not to be driven by the output shaft 2 to rotate on one hand, and on the other hand, the influence on the volume of the liquid storage cylinder 5 when the output shaft 2 moves can be increased, so that the function of data amplification is achieved, and the error of the flowmeter 6 caused by too small flow value is reduced.
Further, the servo motor also comprises a control module and a feedback module, wherein the control module is used for controlling the on-off of the electromagnetic adsorption block, the on-off of the flowmeter 6 and the rotating speed and steering of the electric control rotor 13; the feedback module has the functions of: calculating the liquid flow in the energizing time of the flowmeter 6, converting the acquired liquid flow value into a real-time displacement value of the output shaft 2, comparing the real-time displacement value of the output shaft 2 with a preset displacement value of the output shaft 2, and sending a command for closing the flowmeter 6 and the electromagnetic adsorption block 33 to the control module when the real-time displacement value of the output shaft 2 reaches the preset value. When the motor is used in other scenes, the feedback module can also send signals such as overturning, rotating speed and the like to the control system so as to control the rotating speed and the rotating direction of the motor, thereby realizing the retraction and the speed regulation of the output shaft 2.
In the process of controlling the output shaft 2 to move along the axial direction, the control module is powered on and off frequently to the electromagnetic adsorption block until the real-time bit displacement of the output shaft 2 reaches a preset value and then is kept powered off. Intermittent on-off can effectively reduce the rotational speed difference between the limited slip thread sleeve 3 and the output shaft 2, if the rotational speed difference between the limited slip thread sleeve 3 and the output shaft 2 is large, the output translation is too fast, so that the translation precision is influenced, in addition, the speed difference between the limited slip thread sleeve 3 and the output shaft 2 is large, the synchronous precision of the limited slip thread sleeve 3 and the output shaft 2 is influenced, the limited slip thread sleeve 3 and the output shaft 2 are delayed synchronously, and the output shaft 2 can move in the unmonitored time.
The two screw rod sections 21 are respectively positioned at two sides of the spline section 22, one screw rod section 21 is matched with the limited slip thread sleeve 3, the other screw rod section 21 is matched with the concentric thread sleeve 8, the concentric thread sleeve 8 is positioned at one side of the output end of the output shaft 2, and the concentric thread sleeve 8 is rotatably connected to the shell 11 through a bearing. The concentric thread sleeve 8 and the limited slip thread sleeve 3 are respectively positioned at two end positions of the output shaft 2, so that the coaxiality and the lateral pressure resistance of the output shaft 2 can be improved.
When the limited slip thread sleeve 3 is allowed to rotate, the limited slip thread sleeve 3, the output shaft 2 and the shaft sleeve 14 synchronously rotate, the movement of the output shaft 2 in the axial direction is limited, a cutter or a workpiece connected with the output end only performs rotary motion, when the limited slip thread sleeve 3 is pressed by the electromagnetic brake disc to slow down or stop, the speed difference between the output shaft 2 and the limited slip thread sleeve 3 drives the two to relatively rotate, and then the output shaft 2 relatively translates along the axial direction relative to the shaft sleeve 14, and at the moment, the cutter or the workpiece connected with the output end synchronously performs translation in the axial direction except the rotary motion, namely feeding.
The servo control can be widely understood as feedback control, and aims to improve the running precision and the positioning precision of a moving part, the traditional servo motor adopts an encoder with a photoelectric structure, so that the cost is high, the precision or damage can be influenced by the interference of mechanical vibration, and the cost and the outline size of the equipment can be greatly increased by adopting two independent power sources to realize the rotary cutting and feeding of a workpiece; the difference between the scheme and the traditional method is obvious, the size of equipment can be greatly reduced, and the rotation power and the translation power are integrated.
It is easy to see that during cutting, rotation and translation of the output shaft 2 are synchronously performed, when resistance and impact force caused by feeding in the cutting process are large, the electromagnetic adsorption block structure of intermittent power on and off can realize buffering of the feeding direction of the output shaft 2, namely, when feeding is blocked, part of feeding quantity of the output shaft 2 can be counteracted between the magnetic brake disc 32 and the limited slip thread sleeve 3 in a friction mode, so that feeding is smooth.
In addition, the traditional servo motor adopts an encoder with a photoelectric structure as a signal acquisition mode, the manufacturing cost is high and is easy to damage, in machining, the displacement of a tool or a workpiece is often transmitted through a screw rod mechanism, the gap of the screw rod can cause the displacement deviation of a terminal, the actual precision is different from the precision of the encoder, therefore, the servo motor has higher rotation angle precision and positioning precision when used for rotating motion, but the servo motor is converted into translational motion, the output precision of the terminal can be greatly weakened in a power transmission path increased in the conversion process, in order to overcome the problem, the allowance of the screw rod mechanism is required to be corrected, however, in the conventional machining, the precision control is carried out by adopting the scheme, although the screw rod structure also exists in the scheme, in the machining, the output shaft 2 is in an axially stressed state when the tool is rotationally cut, and the screw rod mechanism is in a tight-supporting state, and because the scheme obtains the data of the moving quantity of the output shaft 2, not the rotation number and the angle data of the motor, and the precision error caused by the matching of the gap of the screw rod mechanism in the continuous rotating cutting and feeding process is not existed. The axial movement amount of the output shaft 2 can be obtained by using the flowmeter 6, compared with the structure of a photoelectric encoder of a traditional servo motor, the cost is much lower, and the control precision is not low.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. The servo motor for precise cutting is characterized by comprising a shell (11), a stator (12), a rotor (13), a shaft sleeve (14) and an output shaft (2), wherein the stator (12) is fixed on the inner wall of the shell (11), the rotor (13) is fixed outside the shaft sleeve (14), and the shaft sleeve (14) is rotationally connected to the shell (11) through a bearing; the output shaft (2) is provided with at least one screw rod section (21) and a spline section (22) positioned in the middle of the output shaft (2), the inner hole wall of the shaft sleeve (14) is provided with an inner spline matched with the spline section (22), and the output shaft (2) can slide along the axis of the shaft sleeve (14);
the machine shell (11) is rotatably connected with a limited slip thread sleeve (3) matched with the screw rod section (21) through a bearing, the limited slip thread sleeve (3) is rotatably connected to the machine shell (11) through the bearing, the limited slip thread sleeve (3) is provided with a braking surface (31), and the machine shell (11) is provided with a magnetic braking disc (32) capable of limiting the rotation of the limited slip thread sleeve (3) by pressing the braking surface (31);
the braking surface (31) is a conical surface, the magnetic braking disc (32) is sleeved outside the limited slip thread sleeve (3), an installation cylinder (4) is fixedly arranged on the shell (11), the limited slip thread sleeve (3) is rotationally connected in the installation cylinder (4), the magnetic braking disc (32) is slidingly connected in the installation cylinder (4), an electromagnetic adsorption block (33) is arranged on the shell (11), a reset spring (34) for driving the electromagnetic braking disc to be far away from the electromagnetic adsorption block (33) is arranged between the magnetic braking disc (32) and the electromagnetic adsorption block (33), the electromagnetic braking disc is made of iron material, and the electromagnetic adsorption block (33) can drive the electromagnetic braking disc to be close to and compress the braking surface (31) after being electrified.
2. A servo motor for precision cutting according to claim 1, characterized in that the housing (11) is fixedly provided with a liquid storage cylinder (5), the output shaft (2) comprises a control end extending out of the housing (11) and an output end extending out of the housing (11), the control end is located in the liquid storage cylinder (5), the end of the liquid storage cylinder (5) is provided with an oil return hole, the oil return hole is communicated with a liquid storage tank, a flowmeter (6) is arranged in the oil return hole, and the control end moves in the hydraulic cylinder to change the liquid storage volume in the liquid storage cylinder (5).
3. A servo motor for precision cutting according to claim 2, wherein the control end is rotatably connected with a slide valve (7) through a bearing, the slide valve (7) being slidably connected in the liquid reservoir (5).
4. A servo motor for precision cutting according to claim 3, further comprising a control module and a feedback module, wherein the control module is used for controlling the on-off of the electromagnetic adsorption block, the on-off of the flowmeter (6), and the rotation speed and the rotation direction of the electric control rotor (13); the feedback module has the functions of: calculating the liquid flow in the energizing time of the flowmeter (6), converting the acquired liquid flow value into a real-time displacement value of the output shaft (2), comparing the real-time displacement value of the output shaft (2) with a preset displacement value of the output shaft (2), and sending a command for closing the flowmeter (6) and the electromagnetic adsorption block (33) to the control module when the real-time displacement value of the output shaft (2) reaches the preset value.
5. The servo motor for precision cutting according to claim 4, wherein the control module is configured to frequently turn on and off the electromagnetic adsorption block during the process of controlling the output shaft (2) to move in the axial direction until the real-time bit displacement of the output shaft (2) reaches a preset value, and then to keep the power off.
6. A servo motor for precision cutting according to claim 1 or 2, characterized in that the number of screw segments (21) is two, two on each side of the spline segment (22), one screw segment (21) being fitted with the limited slip screw sleeve (3) and the other screw segment (21) being fitted with a concentric screw sleeve (8), the concentric screw sleeve (8) being located on the output side of the output shaft (2), the concentric screw sleeve (8) being rotatably connected to the housing (11) by means of a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310425184.5A CN116667593B (en) | 2023-04-18 | 2023-04-18 | Servo motor for precise cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310425184.5A CN116667593B (en) | 2023-04-18 | 2023-04-18 | Servo motor for precise cutting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116667593A CN116667593A (en) | 2023-08-29 |
| CN116667593B true CN116667593B (en) | 2024-01-30 |
Family
ID=87725063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310425184.5A Active CN116667593B (en) | 2023-04-18 | 2023-04-18 | Servo motor for precise cutting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116667593B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1127227A1 (en) * | 1998-11-06 | 2001-08-29 | Nexen Group, Inc. | Servo-motor brake |
| CN101888135A (en) * | 2009-05-14 | 2010-11-17 | 谢兴云 | Electric push device |
| CN202007838U (en) * | 2011-03-11 | 2011-10-12 | 北京邢钢焊网科技发展有限责任公司 | Coupler for pinch roll |
| CN103066745A (en) * | 2012-12-17 | 2013-04-24 | 上海德驱驰电气有限公司 | Motor automatic feed control system |
| JP2016063627A (en) * | 2014-09-18 | 2016-04-25 | 株式会社安川電機 | Rotary electric machine |
| CN106655616A (en) * | 2017-01-20 | 2017-05-10 | 佛山市顺德区华顺电机实业有限公司 | Spline shaft motor with electrically or manually adjustable feed rate |
| CN106849568A (en) * | 2017-02-24 | 2017-06-13 | 上海交通大学 | Controllable rotating feed system and control method |
| CN208474341U (en) * | 2018-04-13 | 2019-02-05 | 佛山市金柏机械制造有限公司 | A kind of vertical vacuum flush coater principal shaft locking structure |
| CN211046674U (en) * | 2019-11-29 | 2020-07-17 | 湖北恒欣传动设备股份有限公司 | Speed reducing motor |
| CN115149713A (en) * | 2022-07-29 | 2022-10-04 | 深圳市合丽智能设备有限公司 | High-thrust direct screw rod output servo electric cylinder |
| CN115853935A (en) * | 2022-12-01 | 2023-03-28 | 武汉步锐科汽车工业科技有限责任公司 | Actuating mechanism for electronic mechanical brake and automobile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070137329A1 (en) * | 2005-10-25 | 2007-06-21 | Everson Victor A | Method and apparatus for an inverted roller screw |
-
2023
- 2023-04-18 CN CN202310425184.5A patent/CN116667593B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1127227A1 (en) * | 1998-11-06 | 2001-08-29 | Nexen Group, Inc. | Servo-motor brake |
| CN101888135A (en) * | 2009-05-14 | 2010-11-17 | 谢兴云 | Electric push device |
| CN202007838U (en) * | 2011-03-11 | 2011-10-12 | 北京邢钢焊网科技发展有限责任公司 | Coupler for pinch roll |
| CN103066745A (en) * | 2012-12-17 | 2013-04-24 | 上海德驱驰电气有限公司 | Motor automatic feed control system |
| JP2016063627A (en) * | 2014-09-18 | 2016-04-25 | 株式会社安川電機 | Rotary electric machine |
| CN106655616A (en) * | 2017-01-20 | 2017-05-10 | 佛山市顺德区华顺电机实业有限公司 | Spline shaft motor with electrically or manually adjustable feed rate |
| CN106849568A (en) * | 2017-02-24 | 2017-06-13 | 上海交通大学 | Controllable rotating feed system and control method |
| CN208474341U (en) * | 2018-04-13 | 2019-02-05 | 佛山市金柏机械制造有限公司 | A kind of vertical vacuum flush coater principal shaft locking structure |
| CN211046674U (en) * | 2019-11-29 | 2020-07-17 | 湖北恒欣传动设备股份有限公司 | Speed reducing motor |
| CN115149713A (en) * | 2022-07-29 | 2022-10-04 | 深圳市合丽智能设备有限公司 | High-thrust direct screw rod output servo electric cylinder |
| CN115853935A (en) * | 2022-12-01 | 2023-03-28 | 武汉步锐科汽车工业科技有限责任公司 | Actuating mechanism for electronic mechanical brake and automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116667593A (en) | 2023-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101304193B (en) | Directly-drive servo electric jar | |
| CN102240917B (en) | Direct drive type servo knife rest | |
| CN101059165B (en) | Lead screw nut pair transmission control device | |
| CN105014480A (en) | Numerical control rotation working table | |
| CN111687879B (en) | Modularized joint of cooperative robot | |
| CN203707978U (en) | Integrated servo electric cylinder | |
| CN116667593B (en) | Servo motor for precise cutting | |
| CN106160332A (en) | A kind of motor that can directly drive rotary shaft | |
| CN201151059Y (en) | Principal axis orientation system of machine tool | |
| FI3612752T3 (en) | Drive device for a movable tappet | |
| CN104534041A (en) | Electric execution device of dual-redundancy direct-drive type roller lead screw pair | |
| CN201079909Y (en) | Servo motor driven high speed electric main shaft system | |
| CN101839267A (en) | Integral speed regulating and pressure regulating servo oil cylinder with pump | |
| CN202934137U (en) | Work piece box used for gear grinding machine | |
| CN208696941U (en) | A kind of capstan feeding steering drive device | |
| CN1289844C (en) | Motor driven valve | |
| CN202441957U (en) | Electric hydraulic valve control device and electric hydraulic valve and engineering machinery | |
| CN102601197B (en) | Numerical control hydraulic powerful spinning machine | |
| CN201224051Y (en) | Main spindle dividing apparatus of NC lathe | |
| CN111136488A (en) | Outer rotor direct-drive type disc tool magazine | |
| CN204658177U (en) | Lathe grinding electric main shaft | |
| US2820162A (en) | Contour controlling tracing head | |
| CN204429972U (en) | A kind of alternating-current synchronous direct drive of torque motor formula capstan head | |
| CN215239258U (en) | Power head of numerical control machine tool | |
| CN114123716B (en) | Permanent magnet speed regulator adjusting device and permanent magnet speed regulator |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |