CN116020965A - Servo direct-drive press - Google Patents
Servo direct-drive press Download PDFInfo
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- CN116020965A CN116020965A CN202211677167.2A CN202211677167A CN116020965A CN 116020965 A CN116020965 A CN 116020965A CN 202211677167 A CN202211677167 A CN 202211677167A CN 116020965 A CN116020965 A CN 116020965A
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- 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
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Abstract
The invention relates to a servo direct-drive press which comprises a direct-drive motor, a slide block part, a balance cylinder part, a material ejection part and a computer servo control system, wherein a permanent magnet synchronous motor is used for driving a ball screw pair in forward and reverse directions in torque to directly push a slide block to do up and down reciprocating motion, the displacement, speed and pressure of the slide block can be precisely controlled in the whole forging and return process of equipment, a pressure sensor is arranged at the front end of the slide block to timely monitor a pressure feedback signal, a compensation function is automatically started when the pressure deviates, the pressure of a product in the forming process is ensured to be constant through the adjustment of the torque output of the motor, and a middle transmission link is omitted, so that the real zero transmission is realized, the transmission efficiency is improved, and the preparation and maintenance cost of the equipment is reduced.
Description
Technical Field
The invention belongs to the technical field of presses, and particularly relates to a servo direct-drive press.
Background
In the prior art, presses are generally classified into screw presses and servo direct-drive presses according to their specific working modes.
The spiral press is instantly released to the workpiece by the accumulated energy of flywheel inertia to deform the workpiece, and has the working characteristics of energy and force limitation in the way of flywheel inertia mechanical energy storage.
The servo direct-drive press in the prior art has the advantages that the structure is complex, the transmission efficiency is low, in the control driving process, the transmission structure is easy to wear, excessive mechanical gaps are easy to occur, the accurate movement of the ball screw pair is difficult to control, and the pressure precision and the service life of the machine cannot be ensured; and when the servo direct-drive press used in the prior art is used, the operation of a motor is usually controlled, the effect of pressure detection in the process of pressing a workpiece is not achieved, the constant pressure of a product in the forming process cannot be ensured, and when the servo direct-drive press is used, the weight of a sliding block and the weight of a die holder are large due to the fact that the sliding block ascends in a return stroke, mechanical abrasion is easy to be caused, and then the error of equipment is increased.
Based on the problems, the invention aims to provide the servo direct-drive press which has high transmission efficiency, accurate pressure control in the pressing process and long service life of equipment.
Disclosure of Invention
The invention aims to provide a servo direct-drive press which has high transmission efficiency, accurate pressure control in the pressing process and long service life of equipment, wherein a ball screw pair is driven forward and backward by torque of a permanent magnet synchronous motor to directly push a sliding block to do up-and-down reciprocating motion, the displacement, speed and pressure of the sliding block can be accurately controlled in the whole forging and returning process of the equipment, a pressure sensor is arranged at the front end of the sliding block to timely monitor a pressure feedback signal, a compensation function is automatically started when pressure is deviated, and the pressure of the product in the forming process is ensured to be constant by adjusting torque output of the motor.
In order to solve the technical problems, according to one aspect of the present invention, the following technical solutions are provided:
a servo direct-drive press comprises a machine body part, a direct-drive motor part, a sliding block part, a balance cylinder part, a material ejection part and a computer servo control system, wherein the direct-drive motor part is arranged at the upper part of the machine body part, the sliding block part is arranged at the center of the inside of the machine body, the balance cylinder part for balancing the weight of the sliding block part is arranged at the outer side of the sliding block part, and the material ejection part is arranged under a workbench at the bottom of the machine body part.
Preferably, the lathe bed part comprises a machine body, a workbench base plate, linear guide rails and limiting blocks, wherein the machine body is internally provided with upright posts, the workbench base plate is fixedly arranged on a workbench, the linear guide rails are fixed on the periphery of the inner side of the upright post of the machine body, and the limiting blocks are fixed on the inner side of the upright post of the machine body.
Preferably, the lathe bed part further comprises an oil sealing ring, O-shaped rings, cylindrical roller bearings, an inner bushing, an outer bushing, a spacer bush, a bearing cover, a thrust aligning roller bearing and a spacer, wherein the oil sealing ring is fixed at the lower part of the machine body beam, the O-shaped rings are arranged between the oil sealing ring and the machine body beam, the cylindrical roller bearings are arranged in pairs in parallel in an inner hole at the upper part of the machine body beam, the inner bushing and the outer bushing are arranged in the middle of the cylindrical roller bearings, the bearing cover is used for fixing a bearing outer ring, one end of the thrust aligning roller bearing is arranged in the inner hole at the lower part of the machine body beam, and the other end of the thrust aligning roller bearing is arranged at the upper part of the machine body beam.
Preferably, the direct-drive motor portion includes: the device comprises a direct-drive motor, a dust cover, an encoder device, an encoder mounting shaft, a disc brake and a brake mounting plate, wherein a stator of the direct-drive motor is mounted on a machine body beam; a dust cover is arranged at the top of the stator of the direct-drive motor; the encoder device is fixed above the disc brake, the middle part of the encoder device is connected with a main screw rod of the ball screw pair through an encoder mounting shaft, a pulse signal generated by the encoder device can be used for accurately controlling the angular displacement of a rotor of the direct-drive motor, the encoder device is connected with the sliding block through the ball screw pair, and meanwhile, the encoder can also monitor the linear displacement and the speed of the sliding block; the disc brake is fixed with a brake mounting plate, the brake mounting plate is mounted on a stator shell of the direct-drive motor, a flat key of a main screw upper end shaft of the ball screw pair is connected with a spline shaft sleeve of the disc brake, and an electromagnetic coil is fixed inside the disc brake.
Preferably, the slider portion includes: the device comprises a lock nut, a nut locking ring, an expansion sleeve, a thrust bearing, a ball screw pair and a sliding block, wherein a nut of the ball screw pair is fastened with the sliding block, a main screw of the ball screw pair is fixed with a rotor of a direct-drive motor through the expansion sleeve, the upper end of the main screw is fastened by the lock nut, the nut locking ring is arranged at the end part of the rotor of the direct-drive motor, the thrust bearing is arranged at the upper end surface of a large scraping table in the middle of the main screw of the ball screw pair, a gap of 0.20mm-0.40mm is kept between the thrust bearing and a thrust aligning roller bearing arranged in an inner hole at the lower part of a beam of a machine body, and a pressure sensor is arranged at the front end part of the sliding block.
Preferably, the outer circumference of the large scraping table is thermally sleeved with an oil baffle ring, and lubricating return oil of each bearing at the upper part of the collecting cross beam flows into the oil baffle ring and returns to the lubricating oil tank; the upper end of the protective cover is fixed on the oil sealing ring, and the lower end of the protective cover is fixed on the upper end face of the nut of the ball screw pair.
Preferably, the balancing cylinder portion includes: the balance cylinder is arranged in the inner cavities of the left upright post and the right upright post of the machine body, the matched welding plate is fastened with the front flange of the balance cylinder, and the matched welding plate is welded on the machine body; the connecting seat is matched with the flat key II and is fastened on the left side and the right side of the sliding block; the connecting seat is fixedly connected with a piston rod of the balance cylinder through a switching rod, a disc spring and a round nut.
Preferably, the ejector part includes: the ejector comprises an ejector, an ejector rod, a guide sleeve and a magneto-induced displacement telescopic sensor, wherein the ejector is arranged in an inner cavity at the lower part of a machine body workbench, the guide sleeve is arranged between the machine body workbench and a base plate, the ejector rod is arranged in the guide sleeve and falls on an ejector piston rod, and the stroke of the ejector can send a signal through the magneto-induced displacement telescopic sensor arranged at the ejection tail part.
Preferably, the computer servo control system is electrically connected with the direct-drive motor part and the sliding block part.
Preferably, the computer servo control system comprises an equipment control system, an encoder device, a direct drive motor and a software control program.
The invention provides a servo direct-drive press, which has the advantages that:
(1) According to the servo direct-drive press, the ball screw pair is driven forward and backward through the torque of the permanent magnet synchronous motor, the sliding block is directly pushed to do up-and-down reciprocating motion, and the displacement, the speed and the pressure of the sliding block can be accurately controlled in the whole forging and returning process of equipment.
(2) According to the servo direct-drive press, the pressure feedback signal is timely monitored through the pressure sensor arranged at the front end of the sliding block in the forging process of equipment, the compensation function is automatically started when the pressure is deviated, and the constant pressure in the product forming process is ensured through the adjustment of the torque output of the motor.
(3) The servo direct-drive press omits an intermediate transmission link, realizes zero transmission in the true sense, and is energy-saving and environment-friendly; the equipment has simple structure and simple maintenance.
(4) According to the servo direct-drive press, the balance cylinder balances most of the weight of the sliding block and the die holder when the sliding block ascends in a return stroke, a lubricating oil film is formed between the ball screw pairs, the running precision of the ball screw pairs is ensured, and the service life is prolonged.
(5) According to the invention, the angular displacement of the rotor is detected in real time through the encoder, when the sliding block contacts a workpiece, the motor becomes constant torque, the sliding block downwards forges the blank, and the processing precision of the blank is improved by controlling the constant torque in the pressing process.
(6) In the invention, the electromagnetic coil is fixed in the disc brake, when the disc brake is electrified, the brake is opened, the motor normally operates, otherwise, the coil is powered off, the brake band-type brake is pressed tightly by the brake disc assembly under the action of the spring force, the brake moment is generated, the motor is braked, and the operation of the motor can be accurately controlled.
(7) According to the invention, the pressure of the sliding block can be monitored in real time through the pressure sensor arranged at the front end part of the sliding block, and the pressure on the sliding block can be changed according to actual needs through the computer servo control system so as to adapt to different application scenes.
(8) In the invention, the ball screw pair is driven forward and backward by the torque of the permanent magnet synchronous motor, the sliding block is directly pushed to do up and down reciprocating motion, the displacement, the speed and the pressure of the sliding block can be accurately controlled in the whole forging and returning process of the equipment, the pressure feedback signal is timely monitored by installing a pressure sensor at the front end of the sliding block, the compensation function is automatically started when the pressure is deviated, and the torque output of the motor is adjusted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a servo direct drive press according to the present invention.
1-fuselage, 2-bench backing plate, 3-screw one, 4-linear guide, 5-screw two, 6-stopper, 7-screw three, 8-oil seal ring, 9-O-ring, 10-screw four, 11, cylindrical roller bearing, 12-inner bushing, 13-outer bushing, 14-spacer, 15-bearing cap, 16-screw five, 17-thrust aligning roller bearing, 18-spacer, 19-direct drive motor, 20-screw six, 21-dust cover, 22 screw seven, 23-encoder device, 24 screw eight, 25-encoder mounting shaft, 26-disc brake, 27 flat key one, 28 screw nine, 29-brake mounting plate, 30-screw ten, 31-lock nut, 32-nut locking ring, 33-screw eleven, 34-expanding sleeve, 35-bearing, 36-oil seal ring, 37-shield, 38-screw twelve, 39-ball screw pair, 40-slider, 41-thirteen, 42-balance cylinder, 43-weld plate, 44-fourteen, 45-46, 45-disc brake, 27-flat key one, 28-flat key screw nine, 29-flat key seat, 35-flat key 35-screw, 33-flat key seat, 35-flat key 35, 52-flat key seat.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description will be made clearly and fully with reference to the technical solutions in the embodiments, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
As shown in fig. 1, an embodiment of the present invention provides a servo direct-drive press, including a machine body portion, a direct-drive motor portion, a slider portion, a balance cylinder portion, a material ejection portion, and a computer servo control system, wherein the machine body portion includes: the machine body 1, the workbench base plate 2, the screw one 3, the linear guide rail 4, the screw two 5, the limiting block 6, the screw three 7, the oil seal ring 8, the O-shaped ring 9, the screw four 10, the cylindrical roller bearing 11, the inner bushing 12, the outer bushing 13, the spacer 14, the bearing cover 15, the screw five 16, the thrust aligning roller bearing 17 and the spacer 18. The workbench base plate 2 is arranged on the workbench of the machine body 1 through a first screw 3; the linear guide rail 4 is fixed on the inner side of the upright post of the machine body 1 through a second screw 5 and plays a role in guiding when the slide block 39 moves up and down; the limiting blocks 6 are fixed at two positions above and below the inner side of the upright post of the machine body through three screws 7 and are mechanical hard limiting at the limit position of the up-and-down movement of the sliding block; the oil seal ring 8 is fixed at the lower part of the beam of the machine body through a screw IV 10, an O-shaped ring 9 is arranged between the oil seal rings and is used for collecting lubricating return oil of each bearing at the upper part of the beam, and the return oil at the bottom outlet flows into the lubricating oil tank; the cylindrical roller bearings 11 are arranged in parallel in pairs in the inner holes at the upper part of the machine body beam, an inner bushing 12 and an outer bushing 13 are arranged in the middle, a bearing cover 15 is arranged on a screw five 16 to fix the outer ring of the bearing, the axial clearance of the inner ring of the bearing is adjusted through a spacer bush 14, and the bearing bears the radial stress of the rotating part; the thrust self-aligning roller bearing 17 is arranged at one part in the inner hole of the lower part of the machine body beam and is used for bearing upward axial pressure in the descending forging process of the sliding block, and is arranged at the other part in the upper part of the machine body beam and axially bearing all the weight of the middle moving part through the spacer 18.
As a preferable aspect of the servo direct drive press of the present invention, the direct drive motor portion includes: direct drive motor 19, screw six 20, dust cover 21, screw seven 22, encoder device 23, screw eight 24, encoder mounting shaft 25, disc brake 26, flat key one 27, screw nine 28, brake mounting plate 29, and screw ten 30. The stator of the direct-drive motor 19 is arranged on the beam of the machine body through a screw six 20; a dust cover 21 is arranged on the top of the direct-drive motor stator through a screw seven 22; the encoder device 23 is fixed above the disc brake 26 through a screw eight 24, the middle is connected with a main screw rod of the ball screw pair 39 through an encoder mounting shaft 25, a pulse signal generated by the encoder can be used for accurately controlling the angular displacement of a rotor of the direct-drive motor, the encoder device is connected with the sliding block through the ball screw pair, and meanwhile, the encoder can also monitor the linear displacement and the speed of the sliding block; the disc brake 26 is fixed with the brake mounting plate 29 through a screw nine, the brake mounting plate 29 is mounted on the stator housing of the direct-drive motor through a screw ten 30, the upper end shaft of the main screw rod of the ball screw pair 39 is connected with the spline shaft sleeve of the disc brake 26 through a flat key 27, an electromagnetic coil is fixed in the disc brake, the brake is opened when the electric motor is electrified, the motor normally operates, otherwise, the coil is powered off, the brake is band-type, and the brake disc assembly compresses the brake disc under the action of a spring force to generate braking torque and brake the motor.
As a preferable embodiment of the servo direct drive press according to the present invention, the slider portion includes: the nut locking device comprises a locking nut 31, a nut locking ring 32, a screw eleven 33, an expansion sleeve 34, a thrust bearing 35, an oil retaining ring 36, a protective cover 37, a screw twelve 38, a ball screw pair 39, a sliding block 40 and a screw thirteenth 41. The nut of the ball screw pair 39 is fastened with the sliding block 40 through a screw thirteen 41, the main screw of the ball screw pair 39 is fixed with the rotor of the direct-drive motor 19 through the expansion sleeve 34, the upper end is fastened by the locking nut 31, and the nut locking ring 32 is arranged at the end part of the rotor of the direct-drive motor 19 through a screw eleven 33 to prevent the locking nut 31 from loosening and backing; the thrust bearing 35 is arranged on the upper end surface of the large scraping table in the middle of the main screw of the ball screw pair 39, and a gap of 0.20mm-0.40mm is kept between the thrust bearing 35 and the thrust aligning roller bearing 17 arranged in the inner hole of the lower part of the machine body beam, so that the normal operation of the ball screw pair and the instantaneous axial bearing force of the sliding block profiling are ensured; an oil baffle ring 36 is thermally sleeved on the outer circumference of the large scraper table and used for collecting lubricating return oil of each bearing at the upper part of the cross beam, and the lubricating return oil smoothly flows into the oil seal ring 8 and returns to a lubricating oil tank; the protective cover 37 is fixed on the oil seal ring through the upper end of the twelve screw 38, and the lower end is fixed on the upper end face of the nut of the ball screw pair 39, so as to prevent the lubricating oil from splashing in the rotating operation process of the ball screw pair.
As a preferable aspect of the servo direct drive press according to the present invention, the balance cylinder portion includes: balance cylinder 42, join in marriage welding board 43, screw fourteen 44, transfer pole 45, round nut 46, dish spring 47, connecting seat 48, flat key two 49 and screw fifteen 50. The balance cylinder 42 is arranged in the inner cavities of the left and right upright posts of the machine body, the welding plate is fastened with the front flange of the balance cylinder 42 through bolts fourteen 44, and then the welding plate 43 is welded on the machine body; the connecting seat 48 is matched with the flat key II 49 and is fastened on the left side and the right side of the sliding block 40 through a screw fifteen 50; the connecting seat 48 is fixedly connected with a piston rod of the balance cylinder 42 through the adapter rod 45, the disc spring 47 and the round nut 46, and the disc spring 47 plays a role in buffering; the balance cylinder is mainly used for balancing most of the weight of the sliding block and the die holder when the sliding block is in return stroke rising, so that a lubricating oil film is formed between the ball screw pairs, the running accuracy of the ball screw pairs is ensured, and the service life of the ball screw pairs is prolonged.
As a preferable scheme of the servo direct-drive press machine, the material ejection part comprises: ejector 51, ejector pin 52, screw sixteen 53, uide bushing 54 and magneto displacement telescoping sensor 55. The ejector 51 is arranged in the inner cavity of the lower part of the machine body workbench through a screw sixteen 53, a guide sleeve 54 is arranged between the machine body workbench and the base plate, the ejector rod 52 is arranged in the guide sleeve 54 and falls on the ejector piston rod, the stroke of the ejector can be signaled through a magneto-induced displacement telescopic sensor 55 arranged at the ejection tail part, and the ejector is arranged on the touch screen.
As a preferable scheme of the servo direct-drive press, the computer servo control system mainly comprises a main equipment control system, an encoder device 23, a direct-drive motor 19, a software control program and the like. The synchronous motor directly drives the rotor to do work with low speed and large torque, when the stator winding is supplied with three-phase alternating current, the rotor is driven to rotate by electromagnetic force, and if the phase sequence of a power supply on the stator is changed, the rotating direction of the rotor can be changed. The reciprocating motion and forging process of the sliding block can be realized through the side effect of the ball screw. When the sliding block is hit, the brake is loosened, the motor is started at the same time, the sliding block descends, the motor drives the ball screw pair at a constant speed, the encoder detects the angular displacement of the rotor in real time, when the sliding block contacts a workpiece, the motor becomes constant torque, and the sliding block descends to forge a blank. When the upper die and the lower die are in profiling, a return signal is sent out, the motor is reversed, the sliding block returns, when the sliding block returns to a certain height, the motor is switched into energy consumption braking, and when the sliding block approaches to the top dead center, the brake acts to brake, so that the sliding block is static at the top dead center.
The technical scheme of the invention is further described below by combining specific embodiments.
Example 1
The embodiment of the invention provides a servo direct-drive press which comprises a lathe bed part, a direct-drive motor part, a sliding block part, a balance cylinder part, a material ejection part and a computer servo control system, wherein the direct-drive motor part is arranged at the upper part of the lathe bed part, the sliding block part is arranged at the center of the inside of the lathe bed, the balance cylinder part for balancing the weight of the sliding block part is arranged at the outer side of the sliding block part, and the material ejection part is arranged below a workbench at the bottom of the lathe bed part.
During operation, the permanent magnet synchronous motor torque drives the ball screw pair in forward and reverse directions to directly push the sliding block to do up and down reciprocating motion, in the whole forging and returning process of equipment, the displacement, speed and pressure of the sliding block can be accurately controlled, a pressure sensor is arranged at the front end of the sliding block to timely monitor a pressure feedback signal, a compensation function is automatically started when the pressure deviates, the pressure of a product forming process is ensured to be constant through adjustment of the motor torque output, a workpiece is placed on a lathe bed part, the sliding block of the sliding block part is driven to move through the direct drive motor part to press the workpiece, a balance cylinder part is used for balancing most of weight of the sliding block part, the pressing is finished, and the workpiece is ejected through a ejection part to finish the work.
Example 2
The embodiment of the invention provides a servo direct-drive press which comprises a lathe bed part, a direct-drive motor part, a sliding block part, a balance cylinder part, a material ejection part and a computer servo control system, wherein the direct-drive motor part is arranged at the upper part of the lathe bed part, the sliding block part is arranged at the center of the inside of the lathe bed, the balance cylinder part for balancing the weight of the sliding block part is arranged at the outer side of the sliding block part, and the material ejection part is arranged below a workbench at the bottom of the lathe bed part;
the preferable lathe bed part comprises a machine body, a workbench base plate, linear guide rails and limiting blocks, wherein the machine body is internally provided with upright posts, the workbench base plate is fixedly arranged on a workbench, the linear guide rails are fixed on the periphery of the inner side of the upright post of the machine body, and the limiting blocks are fixed on the inner side of the upright post of the machine body; the lathe bed part also comprises an oil sealing ring, O-shaped rings, cylindrical roller bearings, an inner bushing, an outer bushing, a spacer bush, a bearing cover, a thrust aligning roller bearing and a spacer, wherein the oil sealing ring is fixed at the lower part of the machine body beam, the O-shaped rings are arranged between the oil sealing ring and the cylindrical roller bearings, the cylindrical roller bearings are arranged in pairs and side by side at the inner hole at the upper part of the machine body beam, the inner bushing and the outer bushing are arranged in the middle of the cylindrical roller bearings, the bearing cover is used for fixing the outer ring of the bearing, one end of the thrust aligning roller bearing is arranged at the inner hole at the lower part of the machine body beam, and the other end of the thrust aligning roller bearing is arranged at the upper part of the machine body beam; the slider portion includes: the device comprises a lock nut, a nut locking ring, an expansion sleeve, a thrust bearing, a ball screw pair and a sliding block, wherein a nut of the ball screw pair is fastened with the sliding block, a main screw of the ball screw pair is fixed with a rotor of a direct-drive motor through the expansion sleeve, the upper end of the main screw is fastened by the lock nut, the nut locking ring is arranged at the end part of the rotor of the direct-drive motor, the thrust bearing is arranged at the upper end surface of a large scraping table in the middle of the main screw of the ball screw pair, a gap of 0.20mm-0.40mm is kept between the thrust bearing and a thrust aligning roller bearing arranged in an inner hole at the lower part of a beam of a machine body, and a pressure sensor is arranged at the front end part of the sliding block.
During operation, the ball screw pair is driven forward and backward by the machine torque to directly push the sliding block to reciprocate up and down, the displacement, speed and pressure of the sliding block can be accurately controlled in the whole forging and returning process of the equipment, and the pressure sensor is arranged at the front end of the sliding block to timely monitor the pressure feedback signal.
Example 3
The embodiment of the invention provides a servo direct-drive press which comprises a lathe bed part, a direct-drive motor part, a sliding block part, a balance cylinder part, a material ejection part and a computer servo control system, wherein the direct-drive motor part is arranged at the upper part of the lathe bed part, the sliding block part is arranged at the center of the inside of the lathe bed, the balance cylinder part for balancing the weight of the sliding block part is arranged at the outer side of the sliding block part, and the material ejection part is arranged below a workbench at the bottom of the lathe bed part; the machine body comprises a machine body, a workbench base plate, linear guide rails and limiting blocks, wherein the machine body is internally provided with upright posts, the workbench base plate is fixedly arranged on a workbench, the linear guide rails are fixed on the periphery of the inner side of the upright posts of the machine body, and the limiting blocks are fixed on the inner side of the upright posts of the machine body; the lathe bed part also comprises an oil sealing ring, O-shaped rings, cylindrical roller bearings, an inner bushing, an outer bushing, a spacer bush, a bearing cover, a thrust aligning roller bearing and a spacer, wherein the oil sealing ring is fixed at the lower part of the machine body beam, the O-shaped rings are arranged between the oil sealing ring and the cylindrical roller bearings, the cylindrical roller bearings are arranged in pairs and side by side at the inner hole at the upper part of the machine body beam, the inner bushing and the outer bushing are arranged in the middle of the cylindrical roller bearings, the bearing cover is used for fixing the outer ring of the bearing, one end of the thrust aligning roller bearing is arranged at the inner hole at the lower part of the machine body beam, and the other end of the thrust aligning roller bearing is arranged at the upper part of the machine body beam; the direct drive motor portion includes: the device comprises a direct-drive motor, a dust cover, an encoder device, an encoder mounting shaft, a disc brake and a brake mounting plate, wherein a stator of the direct-drive motor is mounted on a machine body beam; a dust cover is arranged at the top of the stator of the direct-drive motor; the encoder device is fixed above the disc brake, the middle part of the encoder device is connected with a main screw rod of the ball screw pair through an encoder mounting shaft, a pulse signal generated by the encoder device can be used for accurately controlling the angular displacement of a rotor of the direct-drive motor, the encoder device is connected with the sliding block through the ball screw pair, and meanwhile, the encoder can also monitor the linear displacement and the speed of the sliding block; the disc brake is fixed with a brake mounting plate, the brake mounting plate is mounted on a stator shell of the direct-drive motor, a flat key of a main screw upper end shaft of the ball screw pair is connected with a spline shaft sleeve of the disc brake, and an electromagnetic coil is fixed in the disc brake; the slider portion includes: the device comprises a lock nut, a nut locking ring, an expansion sleeve, a thrust bearing, a ball screw pair and a sliding block, wherein a nut of the ball screw pair is fastened with the sliding block, a main screw rod of the ball screw pair is fixed with a rotor of a direct-drive motor through the expansion sleeve, the upper end of the main screw rod is fastened by the lock nut, the nut locking ring is arranged at the end part of the rotor of the direct-drive motor, the thrust bearing is arranged at the upper end surface of a large scraping table in the middle of the main screw rod of the ball screw pair, a gap of 0.20mm-0.40mm is kept between the thrust bearing and a thrust aligning roller bearing arranged in an inner hole at the lower part of a beam of a machine body, and a pressure sensor is arranged at the front end part of the sliding block; an oil retaining ring is thermally sleeved on the outer circumference of the large scraper table, and lubricating return oil of each bearing on the upper part of the collecting cross beam flows into the oil retaining ring and returns to the lubricating oil tank; the upper end of the protective cover is fixed on the oil sealing ring, and the lower end of the protective cover is fixed on the upper end face of the nut of the ball screw pair; the balance cylinder portion includes: the balance cylinder is arranged in the inner cavities of the left upright post and the right upright post of the machine body, the matched welding plate is fastened with the front flange of the balance cylinder, and the matched welding plate is welded on the machine body; the connecting seat is matched with the flat key II and is fastened on the left side and the right side of the sliding block; the connecting seat is fixedly connected with a piston rod of the balance cylinder through a switching rod, a disc spring and a round nut; the liftout part includes: the ejector is arranged in an inner cavity at the lower part of the machine body workbench, the guide sleeve is arranged between the machine body workbench and the base plate, the ejector rod is arranged in the guide sleeve and falls on the ejector piston rod, and the stroke of the ejector can be signaled through the magneto-induced displacement telescopic sensor arranged at the ejection tail part; the computer servo control system is electrically connected with the direct-drive motor part and the sliding block part; the computer servo control system comprises a device control system, an encoder device, a direct drive motor and a software control program.
During operation, a workpiece is placed on a base plate of a workbench, the ball screw pair is driven forward and backward through the torque of the permanent magnet synchronous motor, the sliding block is directly pushed to do up-down reciprocating motion, the displacement, the speed and the pressure of the sliding block can be accurately controlled in the whole forging and returning process of equipment, a pressure sensor is arranged at the front end of the sliding block to timely monitor a pressure feedback signal, a compensation function is automatically started when the pressure deviates, the pressure of the product forming process is ensured to be constant through the adjustment of the torque output of the motor, and the zero transmission in the real sense is realized by omitting an intermediate transmission link.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the content of the present invention or direct/indirect application in other related technical fields are included in the scope of the present invention.
Claims (10)
1. A servo direct-drive press is characterized in that: comprises a lathe bed part, a direct drive motor part, a sliding block part, a balance cylinder part, a material ejection part and a computer servo control system; wherein, the liquid crystal display device comprises a liquid crystal display device,
the upper part of the lathe bed part is provided with a direct drive motor part, the center of the inside of the lathe bed is provided with a sliding block part, the outer side of the sliding block part is provided with a balance cylinder part for balancing the weight of the sliding block part, and the bottom of the lathe bed part is provided with a material ejection part below a workbench;
the slider portion includes: the device comprises a lock nut, a nut locking ring, an expansion sleeve, a thrust bearing, a ball screw pair and a sliding block, wherein a nut of the ball screw pair is fastened with the sliding block, a main screw of the ball screw pair is fixed with a rotor of a direct-drive motor through the expansion sleeve, the upper end of the main screw is fastened by the lock nut, the nut locking ring is installed at the end part of the rotor of the direct-drive motor, a pressure sensor installed at the front end part of the sliding block is used for driving the ball screw pair forward and backward through the torque of a permanent magnet synchronous motor to directly push the sliding block to do up and down reciprocating motion, the displacement, the speed and the pressure of the sliding block can be accurately controlled in the whole forging and return process of the device, a pressure feedback signal is timely monitored by installing the pressure sensor at the front end of the sliding block, and an automatic compensation function is started when the pressure deviates, and the pressure of the product forming process is constant is ensured through the adjustment of the torque output of the motor.
2. The servo direct-drive press according to claim 1, wherein the bed portion comprises a machine body, a table pad, linear guide rails and a limiting block, wherein the machine body is internally provided with a stand column, the table pad is fixedly arranged on the table, the linear guide rails are fixed on the periphery of the inner side of the stand column of the machine body, and the limiting block is fixed on the inner side of the stand column of the machine body.
3. The servo direct drive press as recited in claim 1, wherein the bed portion further comprises an oil seal ring, O-rings, cylindrical roller bearings, an inner bushing, an outer bushing, a spacer, a bearing cap, a thrust self-aligning roller bearing and a spacer, the oil seal ring being fixed to a lower portion of the body cross member with the O-rings therebetween, the cylindrical roller bearings being mounted in pairs side by side to an upper portion of the body cross member with the inner bushing and the outer bushing therebetween, the bearing cap fixing a bearing outer ring, the thrust self-aligning roller bearing being mounted at one end to the lower portion of the body cross member with the other end mounted to the upper portion of the body cross member.
4. The servo direct drive press of claim 1, wherein the direct drive motor section comprises: the device comprises a direct-drive motor, a dust cover, an encoder device, an encoder mounting shaft, a disc brake and a brake mounting plate, wherein a stator of the direct-drive motor is mounted on a machine body beam; a dust cover is arranged at the top of the stator of the direct-drive motor; the encoder device is fixed above the disc brake, the middle part of the encoder device is connected with a main screw rod of the ball screw pair through an encoder mounting shaft, a pulse signal generated by the encoder device can be used for accurately controlling the angular displacement of a rotor of the direct-drive motor, the encoder device is connected with the sliding block through the ball screw pair, and meanwhile, the encoder can also monitor the linear displacement and the speed of the sliding block; the disc brake is fixed with a brake mounting plate, the brake mounting plate is mounted on a stator shell of the direct-drive motor, a flat key of a main screw upper end shaft of the ball screw pair is connected with a spline shaft sleeve of the disc brake, and an electromagnetic coil is fixed inside the disc brake.
5. The servo direct-drive press according to claim 1, wherein a thrust bearing is mounted on the upper end surface of the large scraping table in the middle of the main screw of the ball screw pair, and a gap of 0.20mm-0.40mm is kept between the thrust bearing and a thrust aligning roller bearing mounted in the inner hole of the lower part of the machine body beam.
6. The servo direct drive press of claim 5, wherein: an oil retaining ring is thermally sleeved on the outer circumference of the large scraper table, and lubricating return oil of each bearing on the upper part of the collecting cross beam flows into the oil retaining ring and returns to the lubricating oil tank; the upper end of the protective cover is fixed on the oil sealing ring, and the lower end of the protective cover is fixed on the upper end face of the nut of the ball screw pair.
7. The servo direct drive press of claim 6, wherein: the balance cylinder portion includes: the balance cylinder is arranged in the inner cavities of the left upright post and the right upright post of the machine body, the matched welding plate is fastened with the front flange of the balance cylinder, and the matched welding plate is welded on the machine body; the connecting seat is matched with the flat key II and is fastened on the left side and the right side of the sliding block; the connecting seat is fixedly connected with a piston rod of the balance cylinder through a switching rod, a disc spring and a round nut.
8. The servo direct drive press of claim 1, wherein: the liftout part includes: the ejector comprises an ejector, an ejector rod, a guide sleeve and a magneto-induced displacement telescopic sensor, wherein the ejector is arranged in an inner cavity at the lower part of a machine body workbench, the guide sleeve is arranged between the machine body workbench and a base plate, the ejector rod is arranged in the guide sleeve and falls on an ejector piston rod, and the stroke of the ejector can send a signal through the magneto-induced displacement telescopic sensor arranged at the ejection tail part.
9. The servo direct drive press of claim 1, wherein: and the computer servo control system is electrically connected with the direct-drive motor part and the sliding block part.
10. The servo direct drive press of claim 9, wherein: the computer servo control system comprises a device control system, an encoder device, a direct drive motor and a software control program.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080073966A (en) * | 2007-02-07 | 2008-08-12 | 주식회사 모비코 | Electric press |
| CN102990957A (en) * | 2011-09-16 | 2013-03-27 | 麻城纳福传动机械有限公司 | Electric screw press |
| CN105312467A (en) * | 2015-10-19 | 2016-02-10 | 鄢文琼 | Numerical control electric screw press driven by permanent magnet synchronous linear servo motor |
| CN108381962A (en) * | 2018-04-12 | 2018-08-10 | 合肥工业大学 | A kind of energy-saving bi-motor double-station fly press |
| CN110757883A (en) * | 2019-10-31 | 2020-02-07 | 济宁科力光电产业有限责任公司 | Accurate motion control method based on position pressure automatic compensation |
| CN111716785A (en) * | 2020-07-23 | 2020-09-29 | 青岛浩源益友锻压机械有限公司 | High-speed clutch type screw closed punch press |
| CN111906229A (en) * | 2020-08-31 | 2020-11-10 | 武汉新威奇科技有限公司 | Ejecting fixed-length electric servo adjusting device and method |
| CN212372781U (en) * | 2020-07-23 | 2021-01-19 | 青岛浩源益友锻压机械有限公司 | High-energy screw press |
| CN113606303A (en) * | 2021-07-30 | 2021-11-05 | 武汉新威奇科技有限公司 | Axial precise clearance control structure and method for heavy-load ball screw of press machine |
| CN215879684U (en) * | 2021-08-11 | 2022-02-22 | 武汉新威奇科技有限公司 | Direct-drive forging press |
-
2022
- 2022-12-26 CN CN202211677167.2A patent/CN116020965B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080073966A (en) * | 2007-02-07 | 2008-08-12 | 주식회사 모비코 | Electric press |
| CN102990957A (en) * | 2011-09-16 | 2013-03-27 | 麻城纳福传动机械有限公司 | Electric screw press |
| CN105312467A (en) * | 2015-10-19 | 2016-02-10 | 鄢文琼 | Numerical control electric screw press driven by permanent magnet synchronous linear servo motor |
| CN108381962A (en) * | 2018-04-12 | 2018-08-10 | 合肥工业大学 | A kind of energy-saving bi-motor double-station fly press |
| CN110757883A (en) * | 2019-10-31 | 2020-02-07 | 济宁科力光电产业有限责任公司 | Accurate motion control method based on position pressure automatic compensation |
| CN111716785A (en) * | 2020-07-23 | 2020-09-29 | 青岛浩源益友锻压机械有限公司 | High-speed clutch type screw closed punch press |
| CN212372781U (en) * | 2020-07-23 | 2021-01-19 | 青岛浩源益友锻压机械有限公司 | High-energy screw press |
| CN111906229A (en) * | 2020-08-31 | 2020-11-10 | 武汉新威奇科技有限公司 | Ejecting fixed-length electric servo adjusting device and method |
| CN113606303A (en) * | 2021-07-30 | 2021-11-05 | 武汉新威奇科技有限公司 | Axial precise clearance control structure and method for heavy-load ball screw of press machine |
| CN215879684U (en) * | 2021-08-11 | 2022-02-22 | 武汉新威奇科技有限公司 | Direct-drive forging press |
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| CN116020965B (en) | 2023-09-19 |
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