CN112388060B - High-speed intelligent band sawing machine - Google Patents
High-speed intelligent band sawing machine Download PDFInfo
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- CN112388060B CN112388060B CN202011170410.2A CN202011170410A CN112388060B CN 112388060 B CN112388060 B CN 112388060B CN 202011170410 A CN202011170410 A CN 202011170410A CN 112388060 B CN112388060 B CN 112388060B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D55/00—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D55/00—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts
- B23D55/04—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of devices for feeding or clamping work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D59/00—Accessories specially designed for sawing machines or sawing devices
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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
- 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
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Abstract
The invention discloses a high-speed intelligent band sawing machine, which comprises a bed table, a clamping device and a control device, wherein the bed table is used for placing and clamping transported materials; the saw frame is arranged above the bed table, a driving wheel and a driven wheel driven by a main servo motor are rotationally connected to the saw frame, and saw belts are sleeved on the driving wheel and the driven wheel; the tensioning detection device is used for detecting and adjusting the tensioning force of the saw belt; the saw back pressure feedback device is used for detecting the back pressure of the saw band; and the servo lifting driving system controls the lifting speed of the saw frame through the feedback value of the back pressure of the saw belt and the output torque of the main servo motor, and controls the rotating speed of the main servo motor through the feedback value of the lifting speed of the saw frame. The invention controls the feeding speed through double feedback, adjusts the sawing speed through the feeding speed, forms closed-loop vector control, optimizes the sawing efficiency and prolongs the service life of the saw belt.
Description
Technical Field
The invention relates to the technical field of sawing machines, in particular to a high-speed intelligent band sawing machine.
Background
The band sawing machine generally comprises a base, a bed table and a saw frame, wherein the bed table is arranged on the base and is used for placing, transporting and clamping materials to be cut, a liftable saw frame is arranged above the bed table, a driving wheel and a driven wheel are arranged on the saw frame, a saw belt is tightly sleeved on the driving wheel and the driven wheel, and only the saw belt can move along with the driving wheel and drive the driven wheel to rotate under enough tensioning force, however, when the tensioning force is overlarge, the service life of the saw belt can be influenced, so that the tensioning force needs to be adjusted in time; the driving wheel rotates to drive the saw belt to circularly move, the saw frame descends during sawing and vertically cuts materials downwards, the bottom of the saw blade vertically moves downwards (i.e. in the feeding direction) while horizontally (i.e. in the sawing direction), and the sawing efficiency and the service life of the saw belt can be optimized only when the sawing speed and the feeding speed reach reasonable configuration; on the other hand, due to the fact that parameters such as materials, shapes and hardness of materials greatly influence sawing speed and feeding speed, particularly the contact surface of a plurality of materials and saw belts can change in the sawing process, resistance of the saw belts can change at any time, high-precision materials can be efficiently sawed only by timely adjusting the sawing speed and the feeding speed, and meanwhile the service life of the saw belts is guaranteed, and therefore the automatic control of the sawing speed and the feeding speed at any time is very important.
The current automatic band sawing machine is usually fed back to a feeding hydraulic device and a tensioning hydraulic device according to the output torque and the tensioning force of a main motor so as to adjust the feeding speed and the tensioning force in the sawing process, however, the sawing speed cannot be controlled, so that the sawing speed cannot be reasonably matched with the feeding speed, the real constant control of sawing load cannot be achieved, and the service life of the saw band is also influenced; on the other hand, the feeding speed is only regulated by the output torque, namely the horizontal force applied to the saw band, and the pressure applied to the saw band in the vertical direction is not considered, so that the regulating parameters are too small, and the feeding speed cannot be optimally controlled.
For example, a "control method for constant power sawing of band sawing machine and intelligent band sawing machine thereof" disclosed in chinese patent literature, its publication number CN105033352B, includes a control system, a saw frame system, a feeding system and a clamping mechanism, a rotary encoder is mounted on a rotating shaft of a driven saw wheel, and detects the rotating speed of the driven saw wheel in real time; the power sensor detects the feedback current of the frequency converter and transmits the feedback current to the lower computer after passing through the rotary encoder; the lower computer controls the motor to adjust the opening of the feeding flow valve through the feeding flow valve according to the acquired rotating speed and torque data of the main motor, and the lifting speed of a piston rod of the feeding oil cylinder is changed; the lower computer adjusts the pressure of the electro-hydraulic proportional overflow valve through feedback of the sensor, and tension force control of the tensioning oil cylinder is achieved. The invention controls the lifting speed of the cylinder piston rod and the tension force control of the tensioning cylinder through the data of the rotating speed and the torque of the main motor and the data of the tension force, and has the defects that a control system cannot form a closed loop, the sawing speed cannot be adjusted in time, the real constant power control cannot be achieved, and the service life of the saw belt cannot be optimized.
Disclosure of Invention
The invention provides a high-speed intelligent band sawing machine, which aims to solve the problems that a band sawing machine control system in the prior art cannot form a closed loop, the sawing speed cannot be adjusted in time, the feeding speed adjusting parameter is too small, and the service life of a saw band cannot be optimized.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a high speed intelligent band sawing machine comprising:
the bed is used for placing and clamping transported materials;
the saw frame is arranged above the bed table, a driving wheel and a driven wheel driven by a main motor are rotatably connected to the saw frame, and saw belts are sleeved on the driving wheel and the driven wheel;
the tensioning detection device is used for detecting and adjusting the tensioning force of the saw belt;
the saw back pressure feedback device is used for detecting the back pressure of the saw band;
and the servo lifting driving system controls the lifting speed of the saw frame through the feedback value of the back pressure of the saw belt and the output torque of the main motor, and controls the rotating speed of the main motor through the feedback value of the lifting speed of the saw frame.
When the saw belt cuts materials with inconsistent parameters such as the width or the hardness of the cross section, the contact surface of the saw belt and the materials can be changed in the sawing process. Taking round steel as an example, the width of the cross section of the round steel is firstly increased and then decreased from top to bottom, and the contact surface of the saw belt and the round steel is also firstly increased and then decreased, so that the upward pressure of the saw belt fed back by a steel pipe is correspondingly changed; meanwhile, the main motor driving the driving wheel to rotate feeds back output torque to the servo lifting driving system through the encoder, when the output torque is increased, the rotating speed of the servo motor is reduced, the feeding speed is reduced, and otherwise, the feeding speed is increased; compared with the single feedback control only through output torque in the prior art, the invention is characterized in that the lifting speed of the saw frame, namely the feeding speed, is controlled by the output torque and the back pressure in a double feedback way, and meanwhile, when the feeding speed is changed, the rotating speed of the main motor is correspondingly changed to form closed loop vector control, the sawing speed and the feeding speed are reasonably configured, the sawing efficiency is high, and the service life of the saw belt is greatly prolonged. According to the invention, the servo motor is used for driving the ball screw to rotate so as to drive the saw frame to lift, the adjustment precision is high, the rapid adjustment is realized, meanwhile, the balance cylinder systems are arranged on the two sides of the saw frame, the self weight of the saw frame is counteracted by utilizing oil pressure, and meanwhile, the left and right balance of the saw frame is conveniently adjusted.
Preferably, the device further comprises a pulse chip breaking device for enabling the saw belt to vibrate up and down, the pulse chip breaking device is provided with a point pressing piece, the point pressing piece is used for intermittently pressing the back of the saw belt, and the point pressing piece is provided with a saw back pressure feedback device.
Due to the material characteristics, longer cutting scraps can be generated when certain materials are sawed, and sawing precision and sawing efficiency can be influenced when the cutting scraps are overlong. Meanwhile, as the point pressing piece is continuously contacted with the back of the saw belt, the pressure value born by the saw back can be timely fed back to the lifting servo motor by integrating the saw back pressure feedback device, such as a pressure sensor and the like, on one side of the point pressing piece contacted with the saw belt back, and the chip breaking function and the feedback function are integrated in the same mechanism.
Preferably, the clicking piece is elastically hinged with the pulse chip breaking device, the pulse chip breaking device comprises a poking wheel driven by a servo motor, a poking surface is arranged on one side, close to the clicking piece, of the poking wheel along the circumferential direction, the poking surface is attached to the surface of the clicking piece, and the poking surface drives the clicking piece to vibrate along with rotation of the poking wheel.
The servo motor drives the shifting wheel to rotate and control the rotating speed, the shifting surface is arranged in a fluctuant manner along the circumferential direction, the servo motor comprises a pressing part and a lifting part which are arranged at intervals, the shifting surface is abutted against the outer surface of the spot-pressing piece, the shifting wheel rotates by a certain angle, and when the pressing part (which can be a plane or a convex surface) of the shifting surface is attached to the spot-pressing piece, the spot-pressing piece is pressed against the saw belt to drive the saw belt to press downwards; the poking wheel continues to rotate, the poking surface bulge leaves the spot-pressing piece, the spot-pressing piece is lifted up under the elastic action, the poking surface lifting part (which can be a concave surface or a plane surface) is attached to the spot-pressing piece, the spot-pressing piece leaves the saw belt, the saw belt is lifted up, and the saw belt is circularly reciprocated to realize up-and-down vibration. Further, one end of the point pressing piece, which is close to the shifting wheel, is provided with a rotating shaft, a bearing is sleeved on the rotating shaft, a pressing part of the shifting surface is a plane, a lifting part is a concave surface consistent with the curvature of the periphery of the bearing, the peripheral surface of the bearing is attached to the shifting surface, the shifting surface drives the bearing to rotate and simultaneously enables the end part of the point pressing piece to vibrate up and down. Because the material and the shape influence the saw dust form, the servo motor can adjust the rotating speed according to the cut material so as to adjust the frequency of the broken saw dust.
Preferably, the two pulse chip breaking devices are arranged at one end of the saw belt close to the driven wheel and one end of the saw belt close to the driving wheel respectively, the point pressing pieces on the two pulse chip breaking devices synchronously press the back of the saw belt, and the saw back pressure feedback device is arranged on the point pressing piece close to one end of the driving wheel.
The saw band loosening section (namely, a section close to the driven wheel) and the tensioning section (namely, a section close to the driving wheel) are both provided with a pulse chip breaking device and a spot pressing piece, and because saw chips are only generated in the tensioning section, the device positioned in the tensioning section plays a role in breaking chips.
Preferably, the saw band clamping device is arranged at the saw band loosening section and comprises two guide wheels with different diameters and arranged on two sides of the saw band respectively, a pressing rod is hinged to the saw band clamping device, one end of the pressing rod is driven by the driving device, and the other end of the pressing rod is rotationally connected with one guide wheel.
After the saw band is installed on the action wheel and the follow driving wheel, the saw band area level, in order that the saw band can cut downwards, need twist reverse 90 with saw band below section, make cutting edge perpendicular to material, therefore the loose section of band sawing machine and tensioning section all need set up guider, the saw band area vertical setting between two guider, in order to guarantee the guide effect among the prior art, set up the leading wheel in one side that guider is close to the action wheel or follow driving wheel generally, through set up the leading wheel respectively in order to play pre-guide and clamp action in saw band both sides. According to the invention, the saw band clamping device is arranged on one side, close to the driven wheel, of the guide device of the loosening section, one end of the compression bar is pushed outwards through the driving device, such as the hydraulic device, the other end of the compression bar drives the guide wheel to press the guide wheel on the other side, the two guide wheels tightly press the saw band, the front-back (vertical to the band surface direction) vibration of the loosening section of the saw band is reduced, the saw band is enabled to run more stably, and the machining precision is ensured; on the other hand, the linear speeds of the guide wheels at the two sides are the same, but the diameters of the guide wheels at the two sides are inconsistent, the rotating speeds of the guide wheels at the two sides are inconsistent, and the vibration frequencies of the guide wheels are different, so that the resonance formed by the guide wheels at the two sides and the saw belt vibration frequency at the same time is avoided, the saw belt can run more stably, the machining precision is ensured, the noise is reduced, and the service life of the saw belt is prolonged. Further, the other end of the compression bar is connected with the guide wheel through the aligning bearing, so that the peripheral surface of the guide wheel is kept vertical, deflection of the saw belt is avoided, and sawing effect is guaranteed.
Preferably, the saw belt tension device comprises a saw belt tension section, and is characterized by further comprising a steel brush arranged on the saw belt tension section, wherein the steel brush comprises two brush wheels and a contact induction device, the brush wheels are respectively arranged on two sides of the saw belt, the driving device drives the two brush wheels to rotate in different directions, the brush wheels are connected with the driving device through a universal coupling, the two brush wheels are always attached through an elastic piece, and the brush wheels are provided with contacts which are contacted with the contact induction device when the brush wheels are used up.
The steel brush is used for removing saw dust adhered to the saw belt, the brush wheels are driven to reversely rotate on two sides of the saw belt through the gear transmission structure, the two brush wheels are guaranteed to brush away the saw dust from two sides in the same direction, in the use process, the surfaces of the brush wheels are gradually worn, the diameters of the brush wheels are gradually reduced, and the outer circumferences of the two brush wheels are guaranteed to be kept fit all the time in the shrinking process through the arrangement of the universal coupling and the elastic piece; on the other hand, a contact which is synchronously retracted with the brush wheel is arranged on the brush wheel, when the brush wheel is completely used up, the contact is contacted with the contact sensing device, and a signal is fed back to the control system to remind the replacement of the brush wheel.
Preferably, the driving wheel is driven by the main motor and is driven by the speed reducer, a main shaft seat is fixed on an output shaft of the speed reducer, the main shaft seat is fixed on the saw frame, a bearing is arranged on the main shaft seat, the driving wheel is sleeved on the bearing, and the end part of the output shaft of the speed reducer is fixedly connected with the driving wheel.
The prior art's action wheel lug connection is on the speed reducer output shaft, and the speed reducer output shaft provides output torque for the action wheel rotates, because the action wheel receives saw area simultaneously to its effort, and the load is very big on the speed reducer output shaft, and stress concentration easily produces the cracked problem of speed reducer output shaft in saw cutting process. The end part of the output shaft drives the driving wheel to rotate, the load is transferred and dispersed to the whole saw frame through the main shaft seat, and in addition, the normal operation can be ensured only by replacing a relatively fragile bearing, so that the service life of the output shaft of the speed reducer is greatly prolonged.
Preferably, a plurality of detection holes are uniformly distributed on the driven wheel along the circumferential direction, and photoelectric sensors are arranged on the saw frame corresponding to the detection holes.
Because the driven wheel rotates under the drive of the saw belt, the driven wheel always keeps rotating at a constant speed in a normal state, and when the problems of belt breakage or belt clamping and the like occur, the driven wheel does not keep moving at a constant speed. Through setting up photoelectric sensor real-time supervision from driving wheel rotation state on the saw frame that corresponds the detection hole, when the driving wheel rotates at the uniform velocity, the light that photoelectric sensor transmitted is received by the sensor through the detection hole with certain frequency, when the signal frequency that the sensor received appears great fluctuation or when disappearing then demonstrate that the clamping belt or the broken belt appears, the sawing machine stops the operation, in time reminds the staff to change the belt, perhaps resumes the saw belt state before the saw belt damages.
Preferably, the bed comprises a front clamping device and a rear clamping device, wherein the feeding belt is respectively arranged on two sides of the saw belt, the rear clamping device is connected to the bed in a sliding manner along the feeding direction, the front clamping device and the rear clamping device respectively comprise a movable jaw and a micro-motion jaw which are respectively arranged on two sides of the feeding belt, the movable jaw is connected to the bed in a sliding manner along the direction perpendicular to the feeding direction, and the micro-motion jaw is connected to the bed in a sliding manner along the direction perpendicular to the feeding direction through a micro-motion driving piece.
The front clamp device is static along the feeding direction, the rear clamp device is arranged in a sliding manner along the feeding direction, and the feeding process is as follows: after the movable jaw of the front clamping device transversely moves to clamp the front end of a material, the rear clamping device retreats to a certain position according to the required length, the movable jaw of the rear clamping device transversely moves to clamp the rear end of the material, a saw belt downwards passes through a saw belt groove to saw residual materials at the front end of the material, after cutting is completed, the movable jaw of the front clamping device is abducted, the micro-motion jaw is transversely abducted by a plurality of millimeters, the rear clamping device clamps the material, the front clamping device clamps the material again, the movable jaw of the rear clamping device is transversely abducted, the micro-motion jaw is abducted by a plurality of millimeters and retreats to the same position to clamp the material, the next sawing is carried out, the abducted ensures that the jaw does not rub with the material, the damage to the material and the jaw are avoided, the abducted is ensured, and the damage to the material and the jaw is avoided; on the other hand, the existing front clamping device and the existing rear clamping device are usually arranged on the same side of the saw frame, so that when the rear clamping device feeds forwards, the clamping part of the tail clamped by the front clamping device can not be cut any more, waste is easy to form, and the tail part can be directly conveyed to the lower part of the saw belt by the rear clamping device through the arrangement of the two sides of the front clamping device and the rear clamping device, so that the waste of the tail is avoided. In the embodiment, the micro-motion driving piece is a micro-motion oil cylinder, and the micro-motion oil cylinder is small in volume and can be arranged inside the micro-motion jaw in a sealing way as the micro-motion jaw is only required to be driven to retreat by a plurality of millimeters.
Preferably, the feeding belt is provided with a first clamping position detection device, and the movable jaw of the rear clamping device is provided with a second clamping position detection device and a clamping pressure detection device.
The first clamping position detection device is used for positioning the position of the rear clamping device along the feeding direction, the second clamping position detection device is used for detecting the size of a workpiece, the position of the clamping device is perpendicular to the feeding direction after positioning, in the embodiment, the clamping position detection device is a magnetic grid ruler, and when the second clamping position detection device does not detect the workpiece at the clamping position, the second clamping position detection device indicates that the material is completely fed and reminds the supplement material; the clamping pressure detection device timely feeds back the clamping pressure of the rear clamping device.
Preferably, the shifting wheel comprises an inner shifting wheel and an outer shifting wheel, the shifting surface is arranged on the outer shifting wheel, a slot is formed in the periphery of the inner shifting wheel, the outer shifting wheel is inserted into the slot, a movable plate is arranged at the bottom of the slot and radially slides along the inner shifting wheel, a pressure spring is abutted to the space at the bottom of the movable plate, one end of the movable plate is connected with one end of a flexible piece, a gear rack mechanism is arranged in the inner shifting wheel, the gear is rotationally connected on the inner shifting wheel, the outer circumferential surface of a rotating shaft of the gear is connected with the other end of the flexible piece, the inner shifting wheel is provided with a chute with an opening at the bottom, the opening is formed in the center of the inner shifting wheel, the rack is slidably connected in the chute, a push rod is arranged on the push rod, and the push rod corresponds to the opening.
When sawing, if meet the circumstances that saw back pressure suddenly increases, the saw band rises rapidly, point the ejector pin of casting die jack-up, jack-up rack from the opening part, the rack slides upwards along the spout, drive gear and axis of rotation synchronous rotation, axis of rotation rolling flexible part, flexible part is taken out the fly leaf from interior thumb wheel, make originally compress tightly the pressure spring resilience in fly leaf bottom, thereby it is ejecting outside the thumb wheel from the slot, make stir the face no longer with the bearing laminating, point the casting die lifts to give way, no longer continue to push down the saw band, avoid the saw band to damage when receiving too big impulse, extension saw band life-span. At the same time, the saw back pressure feedback device feeds back to the servo motor of the pulse chip breaking device to stop the rotation of the pulse chip breaking device.
Therefore, the invention has the following beneficial effects: (1) Simultaneously, the feeding speed is controlled in a double feedback mode according to the saw back pressure and the output torque of the main motor, the adjusting parameters are increased, and the feeding speed is adjusted more reasonably; (2) The sawing speed is adjusted along with the change of the feeding speed, and the two speeds are reasonably configured to form closed-loop vector control, so that the sawing efficiency is improved, and the service life of a saw belt is prolonged; (3) The pulse chip breaking device is arranged to break chips at reasonable frequency according to the characteristics of materials, so that hard friction with a spot pressing piece is avoided, and the work is stopped and avoided when the back pressure of the saw is too high; (4) The steel brush and the pulse chip breaking device are arranged to form double chip removal, so that the brush wheel can be replaced in time; (5) The saw band clamping device is arranged to clamp the saw band loosening section while realizing the pre-guiding function, so that vibration and resonance are reduced, the machining precision is improved, and the service life of the saw band is prolonged; (6) The clamp device accurately positions the size and sawing length of the workpiece, and the workpiece is slightly moved to avoid hard friction; (7) The main shaft seat is arranged on the driving wheel to disperse stress, so that the output shaft of the speed reducer is prevented from being broken; (8) The photoelectric sensor is arranged corresponding to the driven wheel to timely detect broken belts and clamping belts; (9) Full-automatic intelligent control of band sawing machine, saw cutting efficiency is high, saw cutting precision is high.
Drawings
FIG. 1 is a schematic diagram of a construction of the present invention.
Fig. 2 is a rear view of the present invention.
Fig. 3 is a schematic structural view of the pulse chip breaking device and the right guide device of the present invention.
Fig. 4 is a schematic structural view of the saw band clamping device of the present invention. .
Fig. 5 is a schematic structural view of the steel brush of the present invention.
Fig. 6 is a schematic structural diagram of the driving wheel of the present invention.
Fig. 7 is a schematic structural diagram of a driving wheel according to embodiment 1 of the present invention.
Fig. 8 is a schematic structural diagram of a driving wheel according to embodiment 2 of the present invention.
Fig. 9 is a schematic structural diagram of a dial wheel according to embodiment 4 of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and detailed description.
Example 1
In the embodiment 1 shown in fig. 1 and 2, a high-speed intelligent band sawing machine comprises a base, a bed and a saw frame 1, wherein the bed is arranged on the base and is used for placing and clamping transported materials, the bed comprises a feeding belt 6, a front clamping device and a rear clamping device which are respectively arranged on the front side and the rear side of the saw belt, the rear clamping device is arranged on the bed in a sliding manner along the feeding direction, the front clamping device comprises a front movable jaw 63 and a front micro-motion jaw 64 which are respectively arranged on two sides of the feeding belt, the rear clamping device comprises a rear movable jaw 61 and a rear micro-motion jaw 62 which are respectively arranged on two sides of the feeding belt, the bottoms of the rear movable jaw 61 and the rear micro-motion jaw 62 are connected, the front movable jaw 63 and the rear movable jaw 61 are respectively connected on the bed in a sliding manner along the direction perpendicular to the feeding direction and are driven by an oil cylinder, and the front micro-motion jaw 64 and the rear micro-motion jaw 62 are respectively arranged in the two micro-motion jaws in a sealing manner; the feeding belt 6 is provided with a first magnetic grating ruler connected with the rear clamping device along the feeding direction and used for positioning the front and rear positions of the rear clamping device, the rear movable jaw 61 is provided with a second magnetic grating ruler along the clamping direction and used for positioning the clamping position of the rear movable jaw 61 according to the size of a material, the rear movable jaw 61 is also provided with a clamping pressure detection device, and no material is indicated when the rear movable jaw 61 does not detect the clamping pressure after moving to the clamping position. As shown in fig. 2, the back of the saw frame 1 is provided with a left guide arm 65, the top of the left guide arm 65 is horizontally and slidably arranged on the saw frame 1 through two guide rails 651, the left guide arm 65 is fixedly connected with the front movable jaw 63 through a connecting rod, a third magnetic grating ruler 652 is horizontally arranged between the guide rails 651, the third magnetic grating ruler 652 is connected with the left guide arm 65 and used for positioning the clamping position of the front movable jaw 63, and a compression oil cylinder 653 used for compressing the left guide arm on the guide rails 651 is arranged on the left guide arm so as to eliminate the gap between the left guide arm and the guide rails.
When conveying the material, the front clamp device is static along the feeding direction, the rear clamp device is arranged in a sliding way along the feeding direction, and the feeding process is as follows: the movable jaw of the front clamping device transversely moves to clamp the front end of a material, the rear clamping device retreats to a certain position according to the required length, the rear movable jaw transversely moves to clamp the rear end of the material, after the saw band 14 cuts the residual material at the front end of the material, the movable jaw and the micro-gap jaw of the front clamping device transversely abdicate for a plurality of millimeters, the rear clamping device clamps the material to push the material forward, the front clamping device clamps the material again and then saw cuts for a certain length, after saw cuts, the rear clamping device transversely abdies for a plurality of millimeters and retreats to the same position and then clamps, preparation is made for the next cutting, abdicating ensures that the jaws do not rub with the material, the damage to the material and the jaws are avoided, and meanwhile waste of material tails is avoided.
The saw frame 1 is arranged above the bed table, the saw frame 1 can be lifted and arranged on the base, the saw frame 1 is driven to lift by a servo lifting driving system, the lifting servo motor 15 drives the ball screw 16 to rotate so as to drive the saw frame 1 to lift, the adjustment precision is high, quick adjustment is realized, meanwhile, the saw frame is provided with the balance cylinder system 17, the self weight of the saw frame is counteracted by oil pressure, and meanwhile, the left and right balance of the saw frame is convenient to adjust; the saw frame 1 is rotationally connected with a driving wheel 11 and a driven wheel 12, a saw belt 14 is sleeved on the driving wheel 11 and the driven wheel 12 to drive the saw belt 14 to rotate anticlockwise, the saw frame 1 is provided with a tensioning detection device, the tensioning detection device comprises a tensioning oil cylinder 13, the driven wheel 12 is horizontally arranged on the saw frame in a sliding mode, the driven wheel 12 is driven through the tensioning oil cylinder 13 after being detected by the tensioning detection device to adjust the distance between the driving wheel 11 and the driven wheel 12 so as to adjust the tensioning force, and an alarm is given when the tensioning force is overlarge; the front of the saw frame 1 is provided with a photoelectric sensor corresponding to a detection hole 121 of the driven wheel 12, the rotation state of the driven wheel is monitored, when the driven wheel rotates at a constant speed, the light rays emitted by the photoelectric sensor are received by the sensor through the detection hole 12 at a certain frequency, when the signal frequency received by the sensor fluctuates greatly or disappears, the belt clamping or belt breakage occurs, the sawing machine stops running, a worker is timely reminded of belt replacement, or the saw belt is restored to the original state before the saw belt is damaged, the driven wheel 12 is also provided with a counterweight wheel 122, the weight of the driven wheel counterweight is increased, the weights of the driving wheel 11 and the driven wheel 12 are balanced, and the stable operation of the saw belt is ensured; the action wheel 11 is driven 111 by the main motor and is transmitted through the speed reducer, as shown in fig. 6, be fixed with the headstock 115 on the speed reducer output shaft, headstock 115 one end is fixed on the saw frame, headstock 115 is equipped with the initiative wheel bearing 112 outward, action wheel 11 cover is established on bearing 112, speed reducer output shaft tip passes through flange 113 and action wheel 11 fixed connection, speed reducer output shaft tip outside is fixed with end cover 114, end cover 114 and flange 113 fixed connection, the output shaft tip drives the action wheel and rotates, transfer the load through setting up the headstock and disperse on whole saw frame, in addition only need change the initiative wheel bearing of vulnerable just can guarantee normal operating, speed reducer output shaft life-span has greatly been prolonged.
As shown in fig. 1, pulse chip breaking devices 3 and guide devices 4 are arranged above a saw band tensioning section on the right side of the saw frame 1 and a saw band loosening section on the left side of the saw frame, as shown in fig. 3, the guide devices 4 comprise guide plates 421 arranged on two sides of the saw band 14, the pulse chip breaking devices 3 are fixed on the guide plates 421, a point pressing piece 42 is elastically hinged between the two guide plates 421, one end of the point pressing piece 42, which is close to the pulse chip breaking devices 3, is provided with a rotating shaft, a pulse bearing 41 is sleeved on the rotating shaft, the pulse chip breaking devices 3 comprise a deflector wheel 32 driven by a pulse servo motor 31, as shown in fig. 7, a poking surface is circumferentially arranged on the bottom surface of the deflector wheel 32, arc concave surfaces 323 consistent with the peripheral curvature of the pulse bearing 41 are uniformly arranged on the poking surface at intervals, the periphery of the pulse bearing 41 is jointed with the poking surface, a pressure sensor is arranged on the right side point pressing piece 42, the poking surface drives the bearing to rotate, and simultaneously enables the end of the point pressing piece 42 to vibrate up and down at a certain frequency. The saw band loosening section (namely, a section close to the driven wheel) and the tensioning section (namely, a section close to the driving wheel) are both provided with a pulse chip breaking device and a spot pressing piece, and because saw chips are only generated in the tensioning section, the device positioned in the tensioning section plays a role in breaking chips.
The back of the saw belt is pressed by the spot pressing pieces at two sides at a certain frequency to enable the saw belt to vibrate up and down synchronously, so that chips are cut off or vibrated in time, the saw belt is enabled to saw more stably, and the service life of the saw belt is long; meanwhile, as the point pressing piece is continuously contacted with the back of the saw belt, the pressure value born by the saw back can be timely fed back to the lifting servo motor 15 by integrating the pressure sensor on one side of the right point pressing piece contacted with the back of the saw belt; since the material and shape affect the shape of the saw dust, the pulse servo motor 31 can adjust the rotation speed of the thumb wheel according to the cut material, thereby adjusting the frequency of the broken dust.
On the other hand, according to the saw back pressure feedback device arranged on the back of the saw band, the saw back is lifted up under the force of the saw band, the pressure value is fed back to the servo lifting driving system through the saw back pressure feedback device, when the pressure is increased, the rotating speed of the servo motor is reduced, the feeding speed is reduced, and otherwise, the feeding speed is increased; meanwhile, the main motor feeds back the output torque to the servo lifting driving system through the encoder, when the output torque is increased, the rotating speed of the servo motor is reduced, the feeding speed is reduced, and otherwise, the feeding speed is increased; the saw frame lifting speed is controlled through double feedback formed by the output torque and the saw back pressure, meanwhile, when the saw frame lifting speed (namely the feeding speed) changes, the rotating speed of the main motor changes correspondingly, the sawing speed and the feeding speed are reasonably configured, closed-loop vector control is formed, the sawing efficiency is high, and the service life of the saw belt is greatly prolonged.
As shown in fig. 3, the guide plate 421 is movably connected with a movable guide plate 43, a space for passing the saw band 14 is provided between the two movable guide plates 43, a saw deflection detecting device is provided on the movable guide plate 43 for detecting the deflection of the saw band, and the movable guide plate 43 is driven by an oil cylinder to adjust the distance.
As shown in fig. 1, the right saw belt 14 of the right guiding device 4 is further provided with a steel brush device 5, as shown in fig. 5, the steel brush device 5 comprises two brush wheels 54 respectively arranged at two sides of the saw belt, the servo motor drives the gear assembly 51 to drive the two brush wheels 54 to rotate in different directions through the universal coupling 52, two ends of the universal coupling 52 are connected through the tension spring 53, so that the two brush wheels are always attached, a wheel cover 541 is fixed outside the brush wheels, contacts 55 extending inwards are fixed on the wheel cover 541, and a contact sensing device is fixed between the two brush wheels.
The steel brush device is used for removing saw dust adhered to the saw belt, the brush wheels are driven to reversely rotate on two sides of the saw belt through the gear transmission structure, the two brush wheels are guaranteed to brush away the saw dust from two sides in the same direction, in the use process, the surfaces of the brush wheels are gradually worn, the diameters of the brush wheels are gradually reduced, and the outer circumferences of the two brush wheels are guaranteed to be kept attached all the time in the shrinking process through the arrangement of the universal coupling and the tension spring; on the other hand, a contact which is synchronously retracted with the brush wheel is arranged on the brush wheel, when the brush wheel is completely used up, the contact is contacted with the contact sensing device, and a signal is fed back to the control system to remind the replacement of the brush wheel.
As shown in fig. 1, the left side of the left guiding device is provided with a saw band clamping device 2, as shown in fig. 4, the saw band clamping device 2 comprises two guiding wheels with different diameters and respectively arranged at two sides of a saw band, the guiding wheels arranged at the rear side of the saw band 14 are composed of four guiding bearings 21, the diameter of a front guiding wheel 22 arranged at the front side of the saw band 14 is larger than that of the guiding bearings, a pressing rod 23 is hinged on the saw band clamping device by taking a pressing rod rotating shaft 231 as an axis, the upper end of the pressing rod 23 is driven by an oil cylinder, the lower end of the pressing rod is rotationally connected with a aligning bearing, and the aligning bearing is sleeved with the front guiding wheel 22.
The cylinder pushes the upper end of the compression bar outwards, the lower end of the compression bar drives the front guide wheel 22 to press the rear guide wheel, the peripheral surfaces of the guide wheels at two sides keep vertically pressing the saw belt under the action of the aligning bearing, the saw belt is prevented from deflecting, the front-back vibration (vertical to the direction of the belt surface) of the loose section of the saw belt is reduced, the saw belt is enabled to run more stably, and the machining precision is ensured; on the other hand, the linear speeds of the guide wheels at the two sides are the same, but the diameters of the guide wheels at the two sides are inconsistent, the rotating speeds of the guide wheels at the two sides are inconsistent, and the vibration frequencies of the guide wheels are different, so that the resonance formed by the guide wheels at the two sides and the saw belt vibration frequency at the same time is avoided, the saw belt can run more stably, the machining precision is ensured, the noise is reduced, and the service life of the saw belt is prolonged. At the same time, the saw band clamping device 2 is provided with a left side of the left guiding device, so that a pre-guiding function is provided.
A sawdust cleaning device 7 is arranged on the base corresponding to the scraps, and the sawdust is conveyed into a cleaning trolley 71; the base is also provided with a water temperature and water pressure control device 8 for cooling water, so as to monitor the water temperature and water pressure in real time and heat the cooling water when the water temperature is too low; the base is also provided with an oil temperature control device 81 for monitoring the oil temperature in real time and keeping the oil temperature within a reasonable range through heating or cooling. The bottom of the saw frame is also provided with a quick-descending device, when the saw frame is at a certain distance from the material, the descending speed of the saw frame is improved, and when the bottom of the saw frame is close to the material, the speed of the saw frame is restored to the required feeding speed. And a light curtain sensing system is arranged around the base, and when a person is too close to the base, the light curtain sensing system is fed back to the control system after sensing so as to stop working or alarm. The saw frame 2 is also provided with a saw band detection device, and when no saw band is detected on the driven wheel or the driving wheel, workers are reminded of timely installing the saw band.
Example 2
In the embodiment 2 shown in fig. 8, a high-speed intelligent band sawing machine has the same structure as that of the embodiment 1, except that the lowest points of two adjacent arc concave surfaces 323 are connected by a concave plane to form a long concave surface 324 with arc surfaces at two ends, and the long concave surface 324 extends along the circumferential direction.
After the pulse chip breaking device is started, the pulse bearing 41 with the surface is stirred to rotate, when the arc concave 323 section of the stirring surface is abutted against the bearing, the end part of the point pressing piece 42 is vibrated up and down at a certain frequency, the back of the saw belt is pressed at a certain frequency, and the saw belt is vibrated up and down at the frequency; when the long concave surface 324 of the poking surface rotates to be abutted with the bearing, the abutting time of the long concave surface and the bearing is longer than the abutting time of the arc concave surface, so that the lifting time of the spot pressing piece 42 and the saw belt is prolonged, the probability of discharging saw dust from the saw belt lifted upwards is increased, meanwhile, the saw belt is prevented from vibrating at the same frequency all the time, resonance with other parts of the saw frame is avoided, and the stability is improved. Further, the long concave surface 324 on the pulse chip breaking device at two ends of the saw belt is synchronously abutted with the pulse bearing 41, so that the saw belt can vibrate up and down along the length direction, and the cutting precision is ensured.
Example 3
The structure of the high-speed intelligent band sawing machine is approximately the same as that of the embodiment 2, and the difference is that an outwards convex arc convex surface is arranged between the arc concave surfaces 323, and the stirring surface is a wave surface extending along the circumferential direction except the long concave surface 324 section. When the bearing is abutted against the wave surface, the saw belt carries out simple harmonic vibration, the pressing amplitude is increased, and the chip breaking effect is enhanced.
Example 4
In embodiment 4 shown in fig. 9, a high-speed intelligent band sawing machine is similar to embodiment 1 in structure, and is characterized in that a poking wheel 32 comprises an inner poking wheel 321 and an outer poking wheel 322, a poking surface is arranged on the bottom surface of the outer poking wheel, an upward opening slot 329 is arranged on the periphery of the inner poking wheel, the outer poking wheel is inserted and pressed in the slot, a movable plate 327 is arranged in the slot, the movable plate 327 is arranged in a sliding manner along the radial direction of the inner poking wheel, a compressed pressure spring 328 is abutted in a space at the bottom of the movable plate 327, one end of the movable plate is connected with one end of a stay 326, a rack and pinion mechanism is arranged in the inner poking wheel, a gear 325 is hinged on the inner poking wheel, the outer circumferential surface of a rotating shaft of the gear 325 is connected with the other end of the stay 326, the inner poking wheel is provided with a bottom opening chute 323, the opening is arranged on the circle center of the inner poking wheel, the rack 324 is slidingly connected in the chute, a push rod is arranged on the push rod, and the push rod is arranged corresponding to the opening.
When sawing, if meet the circumstances that saw back pressure suddenly increases, saw band lifts up rapidly, point the ejector pin of casting die jack-up, jack-up rack from the opening part, the rack slides upwards along the spout, drive gear and axis of rotation synchronous rotation, the axis of rotation rolling is acted as go-between, act as go-between draws the fly leaf from interior thumb wheel, make originally compress tightly the pressure spring of fly leaf bottom on the bullet, thereby it is ejecting to push out outer thumb wheel from the slot, make stir the face no longer with the bearing laminating, point the casting die lifts and yields, do not continue to push down the saw band any more, avoid the saw band to damage when receiving too big impulse, extension saw band life-span. At the same time, the saw back pressure feedback device feeds back to the servo motor of the pulse chip breaking device to stop the rotation of the pulse chip breaking device.
Claims (9)
1. A high-speed intelligent band sawing machine is characterized by comprising:
the bed is used for placing and clamping transported materials;
the saw frame is arranged above the bed table, a driving wheel and a driven wheel driven by a main motor are rotatably connected to the saw frame, and saw belts are sleeved on the driving wheel and the driven wheel;
the tensioning detection device is used for detecting and adjusting the tensioning force of the saw belt;
the saw back pressure feedback device is used for detecting the back pressure of the saw band;
the servo lifting driving system controls the lifting speed of the saw frame through the feedback value of the back pressure of the saw belt and the output torque of the main motor, and controls the rotating speed of the main motor through the feedback value of the lifting speed of the saw frame;
the device comprises a saw belt, a pulse chip breaking device for enabling the saw belt to vibrate up and down, a point pressing piece is arranged on the pulse chip breaking device, the point pressing piece is elastically hinged with the pulse chip breaking device, the pulse chip breaking device comprises a poking wheel driven by a servo motor, a poking surface is arranged on one side, close to the point pressing piece, of the poking wheel along the circumferential direction, the poking surface is attached to the surface of the point pressing piece, and the poking surface is rotated along with the poking wheel to drive the point pressing piece to vibrate.
2. The high-speed intelligent band sawing machine according to claim 1, wherein the spot pressing piece is used for intermittently spot pressing the back of the saw band, and a back pressure feedback device is arranged on the spot pressing piece.
3. The high-speed intelligent band sawing machine according to claim 2, wherein the two pulse chip breaking devices are arranged at one end of the saw band close to the driven wheel and one end of the saw band close to the driving wheel respectively, the point pressing pieces on the two pulse chip breaking devices synchronously press the back of the saw band, and the back pressure feedback device is arranged on the point pressing piece close to one end of the driving wheel.
4. The high-speed intelligent band sawing machine according to claim 1 or 2 further comprising a saw band clamping device, wherein the saw band clamping device is arranged on the saw band loosening section and comprises two guide wheels with different diameters and respectively arranged on two sides of the saw band, a pressing rod is hinged to the saw band clamping device, one end of the pressing rod is driven by a driving device, and the other end of the pressing rod is rotationally connected with one guide wheel.
5. The high-speed intelligent band sawing machine according to claim 1 or 2 further comprising a steel brush device arranged on the tensioning section of the saw band, wherein the steel brush device comprises two brush wheels and a contact sensing device which are respectively arranged on two sides of the saw band, the driving device drives the two brush wheels to rotate in different directions, the brush wheels are connected with the driving device through universal couplings, the two brush wheels are always attached through elastic pieces, contacts are arranged on the brush wheels, and when the brush wheels are used up, the contacts are in contact with the contact sensing device.
6. The high-speed intelligent band sawing machine according to claim 1 or 2 wherein the driving wheel is driven by a main motor and is driven by a speed reducer, a main shaft seat is fixed on an output shaft of the speed reducer, the main shaft seat is fixed on a saw frame, a bearing is arranged on the main shaft seat, the driving wheel is sleeved on the bearing, and the end part of the output shaft of the speed reducer is fixedly connected with the driving wheel.
7. The high-speed intelligent band sawing machine according to claim 1 or 2, wherein a plurality of detection holes are uniformly distributed on the driven wheel along the circumferential direction, and photoelectric sensors are arranged on the saw frame corresponding to the detection holes.
8. The high-speed intelligent band sawing machine according to claim 1 or 2 wherein the bed comprises a feeding belt, a front clamping device and a rear clamping device which are respectively arranged at two sides of the feeding belt, wherein the rear clamping device is slidingly connected to the bed along the feeding direction, the front clamping device and the rear clamping device respectively comprise a movable jaw and a micro-motion jaw which are respectively arranged at two sides of the feeding belt, the movable jaw is slidingly connected to the bed along the direction perpendicular to the feeding direction, and the micro-motion jaw is slidingly connected to the bed along the direction perpendicular to the feeding direction through a micro-motion driving piece.
9. The high-speed intelligent band sawing machine according to claim 8 wherein the feeding belt is provided with a first clamping position detecting device, and the movable jaw of the rear clamping device is provided with a second clamping position detecting device and a clamping pressure detecting device.
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| CN113211132A (en) * | 2021-05-24 | 2021-08-06 | 马鞍山钢铁股份有限公司 | Sawing machine clamp device and clamping operation method |
| CN113996865A (en) * | 2021-10-20 | 2022-02-01 | 浙江柳发锯切科技有限公司 | Automatic horizontal metal band sawing machine of pay-off |
| CN114789361A (en) * | 2022-05-12 | 2022-07-26 | 北京摩森纳切割技术装备有限公司 | Intelligent sawing system of high-speed sawing machine |
| CN117428254B (en) * | 2023-12-20 | 2024-03-15 | 山东瑞烨新能源装备有限公司 | Cleaning device for metal band sawing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE29918249U1 (en) * | 1999-10-18 | 2000-03-02 | Kaltenbach Maschfab Hans | Band saw machine with a guide element for guiding the band back |
| DE102008044669B4 (en) * | 2008-08-28 | 2020-03-26 | Keuro Besitz Gmbh & Co. Edv-Dienstleistungs Kg | Guide for a saw band or a saw blade of a sawing machine |
| CN201913316U (en) * | 2010-11-25 | 2011-08-03 | 浙江伟业锯床有限公司 | Intelligent band sawing machine |
| CN206047233U (en) * | 2016-08-19 | 2017-03-29 | 浙江晨雕机械有限公司 | A kind of horizontal band sawing machine |
| TWM539410U (en) * | 2016-12-20 | 2017-04-11 | Everising Machine Company | Wheel guide seat of band saws |
| CN207787850U (en) * | 2018-01-31 | 2018-08-31 | 浙江顶峰机械有限公司 | A kind of band sawing machine with damping leading arm |
| CN109396551A (en) * | 2018-07-27 | 2019-03-01 | 浙江锯力煌锯床股份有限公司 | Pulse controlled sawing saw frame |
| CN209503113U (en) * | 2018-11-26 | 2019-10-18 | 丽水学院 | A kind of adaptive controllable type vibration metal cutting apparatus based on ultra-magnetic telescopic |
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Address after: 321400 No.1, Dongshan Industrial Zone, Huzhen Town, Jinyun County, Lishui City, Zhejiang Province Applicant after: Zhejiang saw Lihuang Industrial Technology Co.,Ltd. Applicant after: Zhejiang Dake Intelligent Equipment Co.,Ltd. Address before: 321400 No.1, Dongshan Industrial Zone, Huzhen Town, Jinyun County, Lishui City, Zhejiang Province Applicant before: ZHEJIANG JULIHUANG SAWING MACHINE GROUP Co.,Ltd. Applicant before: Zhejiang Dake Intelligent Equipment Co.,Ltd. |
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