CN109290373B - Numerical control rolling mill - Google Patents
Numerical control rolling mill Download PDFInfo
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- CN109290373B CN109290373B CN201811504073.9A CN201811504073A CN109290373B CN 109290373 B CN109290373 B CN 109290373B CN 201811504073 A CN201811504073 A CN 201811504073A CN 109290373 B CN109290373 B CN 109290373B
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- lower roller
- upper roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
- B21B31/24—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by screws
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
- B21B35/12—Toothed-wheel gearings specially adapted for metal-rolling mills; Housings or mountings therefor
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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 numerical control rolling mill, which comprises a frame, an upper roller assembly, a lower roller assembly and a roller spacing adjusting assembly, wherein the upper roller assembly comprises an upper roller, an upper roller shaft and an upper roller synchronous gear; the lower roller assembly comprises a lower roller, a lower roller shaft and a lower roller synchronous gear, wherein the lower roller and the lower roller synchronous gear are both fixed on the lower roller shaft, and the upper roller synchronous gear is meshed with the lower roller synchronous gear to synchronously rotate; the roll gap adjusting assembly comprises an upper roll lifting mechanism and an upper roll lifting mechanism driving device, and the upper roll lifting mechanism driving device drives the upper roll lifting mechanism to adjust the distance between the upper roll and the lower roll. The numerical control rolling mill has the advantages of high automation degree, high production efficiency and wide application range.
Description
Technical Field
The invention relates to the technical field of rolling of a cutter blank, in particular to a numerical control rolling mill.
Background
Rolling mills are mechanical devices that roll and plastically deform metal, and rolling mills that roll blanks generally include a housing, an upper roll, and a lower roll, wherein both the upper roll and the lower roll are disposed on the housing.
When the traditional Chinese rolling mill rolls the blanks, in the range of the width (edge to back) of the blanks, the upper roller and the lower roller finish rolling in a mode of adjusting the roller spacing (the axial distance between the upper roller and the lower roller is unchanged, and the roller spacing is smaller and bigger after the roller spacing is bigger by changing the shape of the upper roller and the lower roller), and the different blank materials and the blank temperatures correspond to different roller rotating speeds. The rolling mill for the current common cutter blanks mainly has the following problems:
1. when the axial distance between the upper roller and the lower roller cannot be adjusted, each variety of cutter blanks corresponds to one group of upper roller and lower roller, the defect of low application range exists, when different cutter blanks are rolled, the corresponding upper roller and lower roller are required to be replaced, the time and the labor are wasted, the degree of automation is low, and the production efficiency is low;
2. the upper roller and the lower roller are difficult to synchronously rotate, so that the rolled cutter blanks are bent, and the heights and the thicknesses of the cutter blanks are not corresponding; in addition, when the cutter blanks are rolled by a plurality of rolling mills at present, the inclined planes of the cutter blanks are manually and dynamically adjusted, the labor intensity is high, the production efficiency is low, the product consistency is poor, and the difficulty is increased for the subsequent working procedures;
3. the upper roller or the lower roller is not powered, and generally only one power (motor driving or hydraulic driving) is adopted, and part of rolling mill adopts a driving mode of combining a motor, a belt and a speed reducer, and the motor drives the speed reducer through the belt.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a numerical control rolling mill which expands the application range and improves the production efficiency and the part machining precision.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the numerical control rolling mill comprises a frame, an upper roller assembly and a lower roller assembly, wherein the upper roller assembly and the lower roller assembly are arranged on the frame; the upper roller assembly comprises an upper roller, an upper roller shaft, an upper roller synchronous gear and an upper roller shaft driving device, wherein the upper roller shaft driving device drives the upper roller shaft to rotate, the upper roller shaft comprises a lifting rotating shaft and a fixed rotating shaft, the fixed rotating shaft is connected with the lifting rotating shaft through a floating coupling, the upper roller is fixed on the lifting rotating shaft, and the upper roller synchronous gear is fixed on the fixed rotating shaft; the lower roller assembly comprises a lower roller, a lower roller shaft, a lower roller synchronizing gear and a lower roller shaft driving device, the lower roller shaft driving device drives the lower roller shaft to rotate, the lower roller and the lower roller synchronizing gear are both fixed on the lower roller shaft, and the upper roller synchronizing gear is meshed with the lower roller synchronizing gear to synchronously rotate; the roll gap adjusting device comprises an upper roll lifting mechanism and an upper roll lifting mechanism driving device, wherein the upper roll lifting mechanism driving device drives the upper roll lifting mechanism to adjust the distance between an upper roll and a lower roll.
The numerical control rolling mill can drive the upper roller lifting mechanism to adjust the axial distance between the upper roller and the lower roller through the upper roller lifting mechanism driving device, in the processing, the axial distance between the upper roller and the lower roller can be adjusted in a variable way, automatic rolling of a cutter blank is realized, the rolling surface of the cutter blank has inclination, continuous rolling can be realized, and sectional rolling can be performed back and forth, so that the working efficiency is improved, energy conservation and emission reduction are realized; in the numerical control rolling mill, the upper roll shaft and the lower roll shaft are both provided with the driving devices, the driving force is strong, the upper roll synchronizing gear is meshed with the lower roll synchronizing gear so that the upper roll and the lower roll form rigid synchronous rotation, the first rotating speed of the upper roll and the first rotating speed of the lower roll are ensured, the upper roll is adjusted and moved up and down, the torque is transmitted through the floating coupler, the meshing transmission of the upper roll synchronizing gear and the lower roll synchronizing gear is not influenced, and the precision of the processed part is improved.
Further, the upper roller shaft driving device comprises an upper roller driving motor, an upper roller reducer and an upper roller swinging hydraulic cylinder, wherein the upper roller driving motor drives the fixed rotating shaft to rotate along the axis through the upper roller reducer at the right end part of the fixed rotating shaft, and the upper roller swinging hydraulic cylinder drives the lifting rotating shaft to rotate along the axis at the left end part of the lifting rotating shaft; the lower roller shaft driving device comprises a lower roller driving motor, a lower roller reducer and a lower roller swinging hydraulic cylinder, wherein the lower roller driving motor drives the lower roller shaft to rotate along the axis through the lower roller reducer at the right end part of a lower roller shaft, and the lower roller swinging hydraulic cylinder drives the lower roller shaft to rotate along the axis at the left end part of the lower roller shaft. The numerical control rolling mill is provided with the driving points at the two ends of the upper roller and the lower roller, adopts a mode of combining motor driving and swinging hydraulic cylinder driving, fully combines the advantages of hydraulic driving and motor driving, and improves the rolling force and the rolling speed relative to the prior art.
Further, the swing angles of the upper roller swing hydraulic cylinder and the lower roller swing hydraulic cylinder are 360 degrees.
Further, the frame includes bottom plate, left side board and right side board are all fixed on the bottom plate, and upper roll and lower roll all are located between left side board and the right side board, and the lower roll axle of lower roll both sides is connected with left side board and right side board rotationally respectively.
Further, a synchronizing gear mounting cavity is formed in the right side of the right side plate, and the upper roller synchronizing gear and the lower roller synchronizing gear are both located in the synchronizing gear mounting cavity. The upper roller synchronous gear and the lower roller synchronous gear are both positioned in the synchronous gear mounting cavity, which is beneficial to protecting the gears and prolonging the service life of the gears.
Further, the bottom plate is cuboid, and foundation bolt holes are formed in the bottom plate, close to four corners. The setting of rag bolt hole is convenient for fix the frame.
Further, the upper roller lifting mechanism comprises a central gear, a rack, a left screw rod adjusting gear, a left end roll gap adjusting screw rod, a left screw rod nut type sliding block, a right screw rod adjusting gear, a right end roll gap adjusting screw rod and a right screw rod nut type sliding block; the left screw rod nut type sliding block is vertically and slidingly connected to the left side plate, the right screw rod nut type sliding block is vertically and slidingly connected to the right side plate, and screw rod connecting holes with upward openings are formed in the upper parts of the left screw rod nut type sliding block and the right screw rod nut type sliding block; two ends of the lifting rotating shaft are respectively and rotatably connected with the left screw nut type sliding block and the right screw nut type sliding block; the left end roll gap adjusting screw rod is rotationally connected to the frame at the upper side of the left sliding groove in the vertical direction, the left screw rod adjusting gear is fixed at the upper part of the left end roll gap adjusting screw rod, and the lower end part of the left end roll gap adjusting screw rod is connected to the screw rod connecting hole of the left screw rod nut type sliding block; the right-end roll gap adjusting screw rod is rotationally connected to the frame at the upper side of the right sliding groove in the vertical direction, the right-end roll gap adjusting gear is fixed at the upper part of the right-end roll gap adjusting screw rod, and the lower end part of the right-end roll gap adjusting screw rod is connected to the screw rod connecting hole of the right-end screw rod nut type sliding block; the left and right parts of the rack are respectively meshed with the left screw rod adjusting gear and the right screw rod adjusting gear, the middle part of the rack is meshed with the central gear, and the central gear drives the rack to drive the left screw rod nut type sliding block and the right screw rod nut type sliding block to synchronously lift through the left end roll gap adjusting screw rod and the right end roll gap adjusting screw rod. The upper roller lifting mechanism enables the left screw-nut type sliding block and the right screw-nut type sliding block to synchronously lift, increases the thickness range of the pressing part, and does not influence the pressing precision.
Further, the left side plate is vertically provided with a left sliding groove, the left screw nut type sliding block is matched with the left sliding groove and is slidingly connected in the left sliding groove, the right side plate is vertically provided with a right sliding groove, and the right screw nut type sliding block is matched with the right sliding groove and is slidingly connected in the right sliding groove. Under the prerequisite of left side board and right side board being thick enough, all set up the sliding tray on left side board and right side board, with left lead screw nut formula slider and right lead screw nut formula slider connection in left sliding tray and right sliding tray respectively, left lead screw nut formula slider and right lead screw nut formula slider stress state is good, connects firmly, is convenient for connect the lift rotation axis, makes the radial atress of lift rotation axis better, and then makes the rolling mill precision higher, easily processes out the part of high accuracy.
Further, the upper roller lifting mechanism driving device comprises a screw rod driving motor and a screw rod driving speed reducer, and the screw rod driving motor drives the central gear to rotate through the screw rod driving speed reducer. In the upper roller lifting mechanism driving device, the upper roller lifting mechanism is driven by the screw rod driving motor and the screw rod driving speed reducer, so that the accuracy is high and the automation degree is high.
Further, the frame also comprises an upper side plate, and the screw rod driving motor, the screw rod driving speed reducer and the central gear are all arranged on the upper side plate.
Compared with the prior art, the invention has the beneficial effects that:
1. the numerical control rolling mill can drive the upper roller lifting mechanism to adjust the axial distance between the upper roller and the lower roller through the upper roller lifting mechanism driving device, in the processing, the axial distance between the upper roller and the lower roller can be adjusted in a variable way, automatic rolling of a cutter blank is realized, the rolling surface of the cutter blank has inclination, continuous rolling can be realized, and sectional rolling can be performed back and forth, so that the working efficiency is improved, energy conservation and emission reduction are realized; in the numerical control rolling mill, the upper roll shaft and the lower roll shaft are both provided with the driving devices, the driving force is strong, the upper roll synchronous gear and the lower roll synchronous gear are kept meshed to enable the upper roll and the lower roll to form rigid synchronous rotation, so that the first rotation speed of the upper roll and the first rotation speed of the lower roll are ensured, the torque is transmitted through the floating coupler after the upper roll is adjusted and moved up and down, the meshing transmission of the upper roll synchronous gear and the lower roll synchronous gear is not influenced, and the precision of the processed part is improved;
2. the numerical control rolling mill is characterized in that driving points are arranged at two ends of an upper roller and a lower roller, a mode of combining motor driving and swinging hydraulic cylinder driving is adopted, the motor driving and the swinging hydraulic cylinder driving are both realized by adopting a numerical control technology (a hydraulic cylinder is realized by adopting numerical control hydraulic servo driving), a hydraulic system flexibly absorbs transmission asynchronous motion interference between electric and hydraulic pressure possibly brought by the hydraulic system, and power can be matched according to the variety of parts, materials, heating temperature and power requirements and is regulated and controlled by adopting intelligent software; the motor drive can realize numerical control electric power continuous transmission so as to realize accurate continuous compaction; the single-use swing hydraulic cylinder drive can realize swing compaction, and when the motor and the swing hydraulic cylinder work simultaneously, the single-use swing hydraulic cylinder drive has higher compaction force, higher compaction speed and higher compaction precision compared with the single-use swing hydraulic cylinder drive, and has higher compaction force and higher compaction speed compared with the single-use motor drive;
3. the upper roller synchronous gear and the lower roller synchronous gear are both positioned in the synchronous gear mounting cavity, so that the gear is protected, and the service life of the gear is prolonged;
4. the upper roller lifting mechanism enables the left screw rod nut type sliding block and the right screw rod nut type sliding block to synchronously lift, so that the thickness range of the pressing part is increased, and the pressing precision is not influenced; the screw rod driving motor of the upper roller lifting mechanism driving device is controlled by adopting a numerical control technology, so that the accuracy is high, the automation degree is high, the labor load of people is reduced, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic view of a numerical control rolling mill according to an embodiment of the present invention;
fig. 2 is a schematic top view of a digitally controlled rolling mill according to an embodiment of the present invention.
In the drawings, a frame is 1; 2-an upper roll assembly; 3-a lower roll assembly; 4-a roll gap adjusting assembly;
11-a bottom plate; 12-left side plate; 13-right side plate; 14-an upper side plate; 15-a synchronizing gear mounting cavity; 21-upper rollers; 22-upper roll shaft; 23-upper roller synchronizing gears; 24-an upper roller driving motor; 25-upper roll decelerator; 26-an upper roll swing hydraulic cylinder; 31-lower rolls; 32-lower roll shafts; 33-lower roll synchronizing gears; 34-a lower roller driving motor; 35-a lower roll reducer; 36-a lower roll swing hydraulic cylinder; 41-sun gear; 42-rack; 43-left screw rod adjusting gear; 44-right screw adjusting gear; 45-a left end roll gap adjusting screw rod; 46, a right end roll gap adjusting screw rod; 47-left screw nut type slide block; 48-right screw nut type slide block; 49-upper roller lifting mechanism driving device;
111-foundation bolt holes; 221-lifting rotating shafts; 222-fixing the rotation shaft; 223-floating coupling; 491-a screw drive motor; 492-lead screw drive reducer.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
As shown in fig. 1 and 2, the numerically controlled rolling mill of the present embodiment has a stand 1, an upper roll assembly 2, a lower roll assembly 3, and a roll gap adjustment assembly 4, wherein the upper roll assembly 2, the lower roll assembly 3, and the roll gap adjustment assembly 4 are all disposed on the stand 1 and are controlled by an electric control device to complete the operation.
As shown in fig. 1, in the present embodiment, the upper roll assembly 2 includes an upper roll 21, an upper roll shaft 22, an upper roll synchronizing gear 23, and an upper roll shaft driving device, wherein the upper roll shaft driving device drives the upper roll shaft 22 to rotate, the upper roll shaft 22 includes a lifting rotation shaft 221 and a fixed rotation shaft 222, the fixed rotation shaft 221 and the lifting rotation shaft 222 are connected by a floating coupling 223, the upper roll 21 is fixed on the lifting rotation shaft 221, and the upper roll synchronizing gear 23 is fixed on the fixed rotation shaft 222.
As shown in fig. 1, in the present embodiment, the lower roll assembly 3 includes a lower roll 31, a lower roll shaft 32, a lower roll synchronizing gear 33, and a lower roll shaft driving device, wherein the lower roll shaft driving device drives the lower roll shaft 32 to rotate, and both the lower roll 31 and the lower roll synchronizing gear 33 are fixed to the lower roll shaft 32, and the upper roll synchronizing gear 23 is engaged with the lower roll synchronizing gear 33 to rotate synchronously. In the numerical control rolling mill, the upper roller synchronous gear 23 and the lower roller synchronous gear 33 are kept meshed to enable the upper roller 21 and the lower roller 31 to form rigid synchronous rotation, so that the rotation speed of the upper roller 21 and the lower roller 31 is guaranteed to be equal, torque is transmitted through the floating coupler 223 after the upper roller 21 moves up and down in an adjusting mode, meshing transmission of the upper roller synchronous gear 23 and the lower roller synchronous gear 33 is not affected, and precision of processed parts is improved.
As shown in fig. 1 and 2, in the present embodiment, the upper roll shaft driving device includes an upper roll driving motor 24, an upper roll speed reducer 25, and an upper roll swinging hydraulic cylinder 26, the upper roll driving motor 24 drives the fixed rotation shaft 222 to rotate along the axis through the upper roll speed reducer 25 at the right end portion of the fixed rotation shaft 222, and the upper roll swinging hydraulic cylinder 26 drives the lifting rotation shaft 221 to rotate along the axis at the left end portion of the lifting rotation shaft 221; the lower roll shaft driving device includes a lower roll driving motor 34, a lower roll speed reducer 35, and a lower roll swing hydraulic cylinder 36, the lower roll driving motor 34 driving the lower roll shaft 32 to rotate along the axis through the lower roll speed reducer 35 at the right end portion of the lower roll shaft 32, and the lower roll swing hydraulic cylinder 36 driving the lower roll shaft 32 to rotate along the axis at the left end portion of the lower roll shaft 32. In this embodiment, the swing angles of the upper roll swing hydraulic cylinder 26 and the lower roll swing hydraulic cylinder 36 are 360 degrees, and in practical application, the swing angles of the upper roll swing hydraulic cylinder 26 and the lower roll swing hydraulic cylinder 36 are adjusted according to practical needs.
As shown in fig. 1 and 2, in the present embodiment, driving points are disposed at two ends of the upper roll 21 and the lower roll 31 of the numerical control rolling mill, a mode of combining motor driving and swinging hydraulic cylinder driving is adopted, the motor driving and swinging hydraulic cylinder driving both adopt numerical control technology (the hydraulic cylinder adopts numerical control hydraulic servo driving), the hydraulic system flexibly absorbs transmission asynchronous motion interference between electric and hydraulic possibly brought by the hydraulic system, and power can be matched according to part types, materials, heating temperature and power requirements, and intelligent software is adopted for adjustment control; the motor drive can realize numerical control electric power continuous transmission so as to realize accurate continuous compaction; the single-use swing hydraulic cylinder drive can realize swing compaction, when the motor and the swing hydraulic cylinder work simultaneously, the single-use swing hydraulic cylinder drive has higher compaction force, faster compaction speed and higher compaction precision compared with the single-use swing hydraulic cylinder drive, and has higher compaction force and faster compaction speed compared with the single-use motor drive, and when the numerical control rolling mill rolls a part blank, the numerical control rolling mill mainly has the following modes:
1. heavy-load rolling: the upper roll swinging hydraulic cylinder 26, the lower roll swinging hydraulic cylinder 36, the upper roll driving motor 24 and the lower roll driving motor 34 are all operated, and the four driving points simultaneously drive the upper roll 21 and the lower roll 31 to roll the part at a high speed, so that the output power of the rolling mill is maximum, and the maximum rolling force, the rolling speed and the higher rolling precision can be obtained.
2. Medium load rolling: the lower roll swinging hydraulic cylinder 36 and the lower roll driving motor 34 run simultaneously, two driving points form an electrohydraulic compound driving lower roll 31, at the moment, the upper roll 21 synchronously rotates to roll the part at a high speed due to the engagement of the lower roll synchronous gear 33 and the upper roll synchronous gear 23, and the rolling mill can obtain larger rolling force, rolling speed, higher rolling precision and larger output power.
3. Rolling under a small load: the lower roll swinging hydraulic cylinder 36 is independently operated to drive the lower roll 31, and at this time, the upper roll 21 is synchronously rotated by the engagement of the lower roll synchronizing gear 33 and the upper roll synchronizing gear 23, and the present embodiment is mainly directed to rolling of small load parts.
4. Continuous rolling under small load: the lower roller driving motor 34 controls the independent operation to drive the lower roller 31 through the existing numerical control technology, and at the moment, the upper roller 21 synchronously rotates due to the engagement of the lower roller synchronous gear 33 and the upper roller synchronous gear 23.
As shown in fig. 1 and 2, in the present embodiment, the frame 1 includes a bottom plate 11, a left side plate 12, and a right side plate 23, the left side plate 12 and the right side plate 13 are each fixed to the bottom plate 11, an upper roll 21 and a lower roll 31 are each located between the left side plate 12 and the right side plate 13, and lower roll shafts 32 on both sides of the lower roll 31 are rotatably connected to the left side plate 12 and the right side plate 13, respectively. In the embodiment, the bottom plate 11 is rectangular, and in order to facilitate fixing the frame 1, foundation bolt holes 111 are formed in the bottom plate 11 near four corners; in practical application, the shape of the bottom plate 11 is set according to the requirement, so long as the installation and the use are not affected.
As shown in fig. 1, in order to protect the upper roll synchronizing gear 23 and the lower roll synchronizing gear 33 and to increase the service lives of the upper roll synchronizing gear 23 and the lower roll synchronizing gear 33, in this embodiment, the right side plate 13 is provided with a synchronizing gear installation cavity 15, and the upper roll synchronizing gear 23 and the lower roll synchronizing gear 33 are both located in the synchronizing gear installation cavity 15.
As shown in fig. 1 and 2, in the present embodiment, the roll gap adjustment assembly 4 includes an upper roll lifting mechanism and an upper roll lifting mechanism driving device 49, and the upper roll lifting mechanism driving device 49 drives the upper roll lifting mechanism to adjust the distance between the upper roll 21 and the lower roll 31. The upper roller lifting mechanism comprises a central gear 41, a rack 42, a left screw rod adjusting gear 43, a left end roller spacing adjusting screw rod 45, a left screw rod nut type sliding block 47, a right screw rod adjusting gear 44, a right end roller spacing adjusting screw rod 46 and a right screw rod nut type sliding block 48; the left screw nut type slide block 47 is vertically and slidingly connected to the left side plate 12, the right screw nut type slide block 48 is vertically and slidingly connected to the right side plate 13, and screw connecting holes with upward openings and the same specification are respectively arranged at the upper parts of the left screw nut type slide block 47 and the right screw nut type slide block 48; the two ends of the lifting rotating shaft 21 are respectively and rotatably connected with a left screw nut type slide block 47 and a right screw nut type slide block 48, and the upper roller swinging hydraulic cylinder 26 is fixed on the left screw nut type slide block 47 and synchronously lifts along with the left screw nut type slide block 47; the left end roll gap adjusting screw 45 is rotationally connected to the frame 1 on the upper side of the left sliding groove in the vertical direction, the left screw adjusting gear 43 is fixed on the upper part of the left end roll gap adjusting screw 45, the lower end part of the left end roll gap adjusting screw 45 is connected to a screw connecting hole of the left screw nut type sliding block 47, the right end roll gap adjusting screw 46 is rotationally connected to the frame 1 on the upper side of the right sliding groove in the vertical direction, the right screw adjusting gear 44 is fixed on the upper part of the right end roll gap adjusting screw 46, the lower end part of the right end roll gap adjusting screw 46 is connected to a screw connecting hole of the right screw nut type sliding block 48, and both the left end roll gap adjusting screw 45 and the right end roll gap adjusting screw 46 are matched with the screw connecting hole; the rack 42 moves along a straight line, the left and right parts of the rack 42 are respectively meshed with the left screw rod adjusting gear 43 and the right screw rod adjusting gear 44, the middle part of the rack 42 is meshed with the central gear 41, and the central gear 41 drives the rack 42 to drive the left screw rod nut type sliding block 47 and the right screw rod nut type sliding block 47 to synchronously lift through the left end roll gap adjusting screw 44 and the right end roll gap adjusting screw 45.
As shown in fig. 1 and 2, in this embodiment, in order to make the stress states of the left screw nut type slide block 47 and the right screw nut type slide block 48 better, the connection between the left side plate 12 and the right side plate 13 is stable, so that the lifting rotating shaft 221 is convenient to connect, the radial stress of the lifting rotating shaft 221 is better, the precision of the rolling mill is further higher, and the parts with high precision are processed, specifically, the following scheme is adopted: on the premise that the left side plate 12 and the right side plate 13 are thick enough, sliding grooves are formed in the left side plate 12 and the right side plate 13, the left side plate 12 is vertically provided with a left sliding groove, a left screw nut type sliding block 47 is matched with the left sliding groove and is slidingly connected in the left sliding groove, the right side plate 13 is vertically provided with a right sliding groove, and a right screw nut type sliding block 48 is matched with the right sliding groove and is slidingly connected in the right sliding groove. The left screw nut type slide block 47 and the left sliding groove and the right screw nut type slide block 48 and the right sliding groove can be connected through linear guide rails, or rails or sliding grooves can be directly machined on the left side plate 12 and the right side plate 13, and the left screw nut type slide block 47 and the left screw nut type slide block 48 are provided with sliding grooves or matching of the rails or the sliding grooves with the rails or the sliding grooves of the left side plate 12 and the right side plate 13. In practical applications, the left screw nut slider 47 may be connected to the inner side or the outer side of the left side plate 12, and the right screw nut slider 48 may be connected to the inner side or the outer side of the right side plate 13, so long as the installation and the use are not affected.
As shown in fig. 1 and 2, in this embodiment, the numerical control rolling mill can drive the upper roller lifting mechanism to adjust the distance between the upper roller 21 and the lower roller 31 through the upper roller lifting mechanism driving device 49, so that not only parts with various thicknesses can be processed, but also the application range is wide, the automation degree is high, the production efficiency is high, and the labor load of workers is reduced. In this embodiment, the rack 32 has a limiting mechanism, so as to ensure that the rack 32 moves along a straight line, and the limiting mechanism of the rack 32 may be provided with a guide chute (the rack moves along the guide chute in a straight line) or a linear guide rail (the linear guide rail is fixed on the frame, and the rack is fixed on a slide block of the linear guide rail and moves along the linear guide rail), so long as installation and use are not affected. In this embodiment, the specifications of the left screw adjusting gear 43 and the right screw adjusting gear 44, the left end roll gap adjusting screw 45 and the right end roll gap adjusting screw 46, the left screw nut type slide 47 and the right screw nut type slide 48 are the same, and the left screw nut type slide 47 and the right screw nut type slide 48 are ensured to be lifted and lowered synchronously.
As shown in fig. 1 and 2, in the present embodiment, the frame 1 further includes an upper side plate 14, and the limiting mechanism of the rack 32 is fixed to the upper side plate 14.
As shown in fig. 1 and 2, in the present embodiment, the upper roll lifting mechanism driving device 49 includes a screw driving motor 491 and a screw driving speed reducer 492, and the screw driving motor 492 drives the sun gear 41 to rotate through the screw driving speed reducer 493. The lead screw drive motor 491, the lead screw drive reducer 492, and the center gear 41 are all provided on the upper side plate 14. The screw rod driving motor 491 is controlled by the prior numerical control technology to adjust the roll gap of the upper roll 21 and the lower roll 31, and is suitable for rolling parts with different thickness and width through interpolation movement; in practical applications, the upper roller lifting mechanism driving device 49 may also adopt other driving modes, such as a hydraulic driving mode, so long as installation and use are not affected.
The numerical control rolling mill controls the rotating speed and the roller spacing of the roller by the electric control device, realizes high-precision positioning feeding by the automatic feeding mechanism, adapts to repeated binding and continuous binding processes, can adapt to the processing requirements of various parts, is subverted in the industry, changes the current situation of products, has high cost performance, saves labor and reduces the technological process of the subsequent working procedures.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the applicant has described the present invention in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (4)
1. The numerical control rolling mill comprises a frame, an upper roller assembly and a lower roller assembly, wherein the upper roller assembly and the lower roller assembly are arranged on the frame; the method is characterized in that:
the upper roller assembly comprises an upper roller, an upper roller shaft, an upper roller synchronous gear and an upper roller shaft driving device, wherein the upper roller shaft driving device drives the upper roller shaft to rotate, the upper roller shaft comprises a lifting rotating shaft and a fixed rotating shaft, the fixed rotating shaft is connected with the lifting rotating shaft through a floating coupling, the upper roller is fixed on the lifting rotating shaft, and the upper roller synchronous gear is fixed on the fixed rotating shaft;
the lower roller assembly comprises a lower roller, a lower roller shaft, a lower roller synchronizing gear and a lower roller shaft driving device, the lower roller shaft driving device drives the lower roller shaft to rotate, the lower roller and the lower roller synchronizing gear are both fixed on the lower roller shaft, and the upper roller synchronizing gear is meshed with the lower roller synchronizing gear to synchronously rotate;
the device comprises a roller spacing adjusting assembly, a roller spacing adjusting device and a roller spacing adjusting device, wherein the roller spacing adjusting assembly comprises an upper roller lifting mechanism and an upper roller lifting mechanism driving device, and the upper roller lifting mechanism driving device drives the upper roller lifting mechanism to adjust the distance between an upper roller and a lower roller;
the upper roller shaft driving device comprises an upper roller driving motor, an upper roller speed reducer and an upper roller swinging hydraulic cylinder, wherein the upper roller driving motor drives the fixed rotating shaft to rotate along the axis through the upper roller speed reducer at the right end part of the fixed rotating shaft, and the upper roller swinging hydraulic cylinder drives the lifting rotating shaft to rotate along the axis at the left end part of the lifting rotating shaft; the lower roller shaft driving device comprises a lower roller driving motor, a lower roller reducer and a lower roller swinging hydraulic cylinder, wherein the lower roller driving motor drives a lower roller shaft to rotate along an axis through the lower roller reducer at the right end part of a lower roller shaft, and the lower roller swinging hydraulic cylinder drives the lower roller shaft to rotate along the axis at the left end part of the lower roller shaft;
the swing angles of the upper roller swing hydraulic cylinder and the lower roller swing hydraulic cylinder are 360 degrees;
the machine frame comprises a bottom plate, a left side plate and a right side plate, wherein the left side plate and the right side plate are both fixed on the bottom plate, an upper roller and a lower roller are both positioned between the left side plate and the right side plate, and lower roller shafts on two sides of the lower roller are respectively and rotatably connected with the left side plate and the right side plate;
the right side of the right side plate is provided with a synchronous gear mounting cavity, and the upper roller synchronous gear and the lower roller synchronous gear are both positioned in the synchronous gear mounting cavity;
the bottom plate is cuboid, and foundation bolt holes are formed in the bottom plate near four corners;
the upper roller lifting mechanism comprises a central gear, a rack, a left screw rod adjusting gear, a left end roller spacing adjusting screw rod, a left screw rod nut type sliding block, a right screw rod adjusting gear, a right end roller spacing adjusting screw rod and a right screw rod nut type sliding block; the left screw rod nut type sliding block is vertically and slidingly connected to the left side plate, the right screw rod nut type sliding block is vertically and slidingly connected to the right side plate, and screw rod connecting holes with upward openings are formed in the upper parts of the left screw rod nut type sliding block and the right screw rod nut type sliding block; two ends of the lifting rotating shaft are respectively and rotatably connected with the left screw nut type sliding block and the right screw nut type sliding block; the left end roll gap adjusting screw rod is rotationally connected to the frame at the upper side of the left sliding groove in the vertical direction, the left screw rod adjusting gear is fixed at the upper part of the left end roll gap adjusting screw rod, and the lower end part of the left end roll gap adjusting screw rod is connected to the screw rod connecting hole of the left screw rod nut type sliding block; the right-end roll gap adjusting screw rod is rotationally connected to the frame at the upper side of the right sliding groove in the vertical direction, the right-end roll gap adjusting gear is fixed at the upper part of the right-end roll gap adjusting screw rod, and the lower end part of the right-end roll gap adjusting screw rod is connected to the screw rod connecting hole of the right-end screw rod nut type sliding block; the left and right parts of the rack are respectively meshed with the left screw rod adjusting gear and the right screw rod adjusting gear, the middle part of the rack is meshed with the central gear, and the central gear drives the rack to drive the left screw rod nut type sliding block and the right screw rod nut type sliding block to synchronously lift through the left end roll gap adjusting screw rod and the right end roll gap adjusting screw rod.
2. The digitally controlled rolling mill of claim 1 wherein: the left side board is provided with left sliding groove along vertical, left lead screw nut formula slider and left sliding groove looks adaptation and slidingly connect in left sliding groove, the right side board is provided with right sliding groove along vertical, right lead screw nut formula slider and right sliding groove looks adaptation and slidingly connect in right sliding groove.
3. The digitally controlled rolling mill of claim 1 wherein: the upper roller lifting mechanism driving device comprises a screw rod driving motor and a screw rod driving speed reducer, and the screw rod driving motor drives the central gear to rotate through the screw rod driving speed reducer.
4. A digitally controlled rolling mill according to claim 3 wherein: the frame also comprises an upper side plate, and the screw rod driving motor, the screw rod driving speed reducer and the central gear are all arranged on the upper side plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811504073.9A CN109290373B (en) | 2018-12-10 | 2018-12-10 | Numerical control rolling mill |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811504073.9A CN109290373B (en) | 2018-12-10 | 2018-12-10 | Numerical control rolling mill |
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| CN109290373B true CN109290373B (en) | 2023-09-05 |
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| CN114850215B (en) * | 2022-04-27 | 2023-01-10 | 燕山大学 | TiAl alloy plate rolling method and device |
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