CN217800638U - Variable-rigidity roller online grinding device - Google Patents
Variable-rigidity roller online grinding device Download PDFInfo
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- CN217800638U CN217800638U CN202221603974.5U CN202221603974U CN217800638U CN 217800638 U CN217800638 U CN 217800638U CN 202221603974 U CN202221603974 U CN 202221603974U CN 217800638 U CN217800638 U CN 217800638U
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- guide rail
- bottom plate
- sheet
- ball screw
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Abstract
A variable stiffness roll in-line grinding apparatus comprising: the bottom plate is provided with a first guide rail and a first sliding block; the movable bottom plate is arranged on the first sliding block; the electric push rod is arranged on one side of the movable bottom plate, and the output end of the electric push rod is connected with the movable bottom plate; the second guide rail and the third guide rail as well as the second sliding block and the third sliding block are arranged on two sides of the movable bottom plate and are vertical to the first guide rail; a bottom plate is installed, and one side of the bottom surface of the bottom plate is connected with a second sliding block; the ball screw is arranged on one side of the second guide rail on the movable bottom plate in parallel, the upper nut of the ball screw is connected with the mounting bottom plate, and one end of the ball screw is provided with a ball screw driving device; the servo motor is arranged on the mounting base plate, an output shaft of the servo motor is vertical to the second guide rail, and a grinding wheel is mounted at the end part of the output shaft; the magnetorheological elastomer device is arranged on the third sliding block and is rigidly connected with the servo motor through a connecting plate; and the acceleration sensor is arranged on the servo motor or the connecting plate. The utility model discloses can adjust the structural rigidity of power grinding head in real time, avoid resonance to take place, improve the processingquality on roll surface.
Description
Technical Field
The utility model relates to a steel rolling equipment technical field, in particular to online grinding device of roll of variable rigidity.
Background
The conventional dynamic grinding head system for online grinding of the roller has the defects of small mass, low rigidity and high possibility of resonance in the grinding process, so that the defects of vibration lines, short scratches and the like are generated on the surface of the steel roller, and the surface quality of the rolled and processed strip steel is influenced finally. The traditional damping vibration absorber can only attenuate vibration energy, cannot change the resonance frequency of a system, and cannot thoroughly avoid resonance.
Disclosure of Invention
An object of the utility model is to design a variable rigidity's online grinding device of roll, can adjust the structural rigidity of power grinding head in real time, avoid resonance to take place, improve the processingquality on roll surface.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a variable stiffness roll in-line grinding apparatus comprising:
two first guide rails and first sliding blocks on the first guide rails are arranged on two sides of the upper end face of the bottom plate in parallel along the length direction; the first guide rail is vertical to the axial direction of the roller;
the movable bottom plate is arranged on the first sliding block on the first guide rail;
the electric push rod is arranged in the center of one side of the movable bottom plate, and the output end of the electric push rod is connected with the bottom surface of the movable bottom plate;
the second guide rail and the third guide rail are arranged on two sides of the upper end surface of the movable bottom plate in parallel and are vertical to the first guide rail;
one side of the bottom surface of the mounting bottom plate is connected to the second sliding block on the second guide rail;
the ball screw is arranged between the second guide rail and the third guide rail on the movable bottom plate and is parallel to the second guide rail and the third guide rail, and an upper nut of the ball screw is connected to the bottom surface of the mounting bottom plate; one end of the ball screw is provided with a ball screw driving device;
the servo motor is arranged on the mounting base plate, and an output shaft of the servo motor is vertical to the second guide rail, namely, is vertical to the axial direction of the roller; the end part of the output shaft extends out of the side edge of the mounting bottom plate and is provided with a grinding wheel for grinding a roller;
the magnetorheological elastomer device is arranged on a third sliding block on the third guide rail and is rigidly connected with the servo motor through a connecting plate; it includes:
the body is a shell with an opening at the upper end, and the shell is made of magnetic conductive metal; the inner wall of the shell is provided with an electromagnetic coil along the circumferential direction, and a lead is led out of the shell; the bottom in the shell is provided with a permanent magnet sheet, and a metal magnetic conduction sheet and a magnetorheological elastomer sheet are sequentially and alternately arranged from bottom to top; the permanent magnet sheet, the metal magnetic conductive sheet, the magnetorheological elastomer sheet and the end connecting sheet are respectively provided with mutually communicated mounting through holes to form mounting channels;
the tube body of the heat conduction tube sequentially penetrates through an installation channel formed by installation through holes in the permanent magnet sheet, the metal magnetic conduction sheet, the magnetorheological elastomer sheet and the end connection sheet, openings at two ends of the heat conduction tube are positioned outside the body, and cooling liquid is filled in the heat conduction tube;
and the acceleration sensor is arranged on the servo motor or the connecting plate.
Further, the utility model discloses still be equipped with elevating system, it includes:
a frame;
the lifting guide rail and the lifting slide block are vertically arranged on the rack; the bottom plate is connected to the lifting slide block through a connecting piece;
and the lifting driving device is arranged on one side of the lifting guide rail, and the output end of the lifting driving device is connected with the lifting slide block.
Preferably, the ball screw driving device includes: and the driving motor is arranged on one side edge of the bottom plate, the output end of the driving motor is provided with a driving belt pulley, correspondingly, the end part of the ball screw is provided with a driven belt pulley and is connected with the driving belt pulley through a transmission belt.
Preferably, the elevation driving device includes: and the lifting hydraulic cylinder is vertically arranged on one side of the rack, and the end part of a piston rod of the lifting hydraulic cylinder is provided with a connecting piece connected with the lifting slide block.
Preferably, the body is a cylindrical housing.
Preferably, a plurality of radiating fins are uniformly distributed on the outer wall of the body along the circumferential direction.
Preferably, the permanent magnet sheet, the metal magnetic conductive sheet, the magnetorheological elastomer sheet and the mounting through holes on the end connecting sheet form two mounting channels, and two heat conduction pipes are correspondingly arranged to form a two-in and two-out structure.
Preferably, the heat conduction pipe is a silica gel hose.
In the roll on-line grinding device of the present invention:
in order to avoid the resonance problem of the (disc-shaped) grinding wheel in the process from starting to high-speed stable motion and in the variable-speed grinding process, a magnetorheological elastomer device is connected in parallel with a driving device of the grinding wheel, an electromagnetic coil inside the magnetorheological elastomer device is electrified to generate a magnetic field in an interlayer body formed by a metal magnetic conductive sheet, a magnetorheological elastomer sheet and a permanent magnet sheet, and the rigidity of the magnetorheological elastomer sheet can be changed along with the change of the magnetic field intensity, so that the rigidity change of the whole interlayer body is realized. The current of the electromagnetic coil and the rigidity of the magnetorheological elastomer device are adjusted, so that the resonance frequency of the power end of the grinding wheel is changed, and the purpose of vibration avoidance is achieved.
When the horizontal vibration acceleration acquired by the acceleration sensor reaches the preset resonance intensity, the magnetorheological elastomer device is electrified to realize the rigidity change of the magnetorheological elastomer device. Since the connecting plate rigidly connects the disc-type grinding wheel power system and the magnetorheological elastomer device together, the rigidity of the whole system can be changed. And when the vibration intensity is smaller than the set value, the current is switched off, and the magnetorheological elastomer device recovers the initial rigidity.
The magnetorheological elastomer device is a core component of a variable stiffness system, a magnetic field loop is formed by a shell made of magnetic conductive metal, a connecting plate and an elastomer sandwich body, and the elastomer sandwich body consists of a metal magnetic conductive sheet, a magnetorheological elastomer sheet and a permanent magnet sheet; the electromagnetic coil generates excitation, a magnetic field is generated in the elastomer sandwich body, and the rigidity of the magnetorheological elastomer sheet can change along with the change of the magnetic field intensity, so that the rigidity change of the whole sandwich body is realized.
The heat conduction pipes and the heat dissipation fins are used for heat dissipation of the metal shell, and magnetic field intensity reduction caused by overheating of the shell is avoided.
The heat conduction pipe passes through the four sheet bodies in the elastic interlayer body, and the cooling liquid is introduced into the heat conduction pipe, so that the cooling inside the interlayer body is realized, and the whole interlayer body can reliably work for a long time.
The permanent magnet sheet has the function of giving an initial magnetic field to the whole interlayer body when no current is introduced into the coil, so that the magnetorheological elastomer sheet is in a proper initial rigidity state, and the current amplitude and the energy consumption in the rigidity changing process can be effectively reduced.
The utility model has the advantages that:
magnetorheological elastomer device compares traditional attenuator device, possesses the variable rigidity that traditional rubber gasket, liquid damper do not have and avoids resonant effect, moreover, still has non-maintaining, and the cost is low is showing the advantage.
Compared with an electrorheological elastomer device, the electrorheological elastomer device is small in current, low in energy consumption, complete in heat dissipation means and high in reliability, achieves the function of presetting initial rigidity by arranging the permanent magnet, and is larger in rigidity reliability range.
Through on-the-spot processing test, under resonance state, open the magneto rheological elastomer device after, the vibration acceleration effective value can attenuate more than 20% to the emergence of metallurgical roll online grinding in-process surface vibration line has effectively been avoided.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic view of an embodiment of the present invention illustrating the assembly of the grinding and magnetorheological elastomer device;
FIG. 3 is a top view of an embodiment of the magnetorheological elastomer device of the present invention;
FIG. 4 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a schematic view of the structure of the end connection piece of the magnetorheological elastomer device according to the present invention;
fig. 6 is a schematic structural view of a metal magnetic conductive sheet in the magnetorheological elastomer device according to the present invention;
fig. 7 is a schematic structural view of a magnetorheological elastomer sheet in the magnetorheological elastomer device according to the present invention;
fig. 8 is a schematic structural view of a permanent magnet sheet in the magnetorheological elastomer device according to the present invention;
fig. 9 is a perspective view of embodiment 2 of the present invention.
Detailed Description
Referring to fig. 1 to 8, the present invention provides a variable-rigidity online grinding device for a roll, comprising:
two first guide rails 2 and an upper first sliding block 21 thereof are arranged on two sides of the upper end surface of the bottom plate 1 in parallel along the length direction; the first guide rail 2 is vertical to the axial direction of the roller 100;
a movable base plate 3 provided on the first slider 21 on the first guide rail 2;
the electric push rod 4 is arranged in the center of one side of the movable bottom plate 3, and the output end of the electric push rod is connected with the bottom surface of the movable bottom plate 3;
the second guide rail 5 and the third guide rail 6 are arranged on two sides of the upper end surface of the movable bottom plate 3 in parallel and are vertical to the first guide rail 2;
the bottom surface of the mounting bottom plate 7 is connected to the second sliding block on the second guide rail 5;
the ball screw 8 is arranged between the second guide rail 5 and the third guide rail 6 on the movable bottom plate 3 and is parallel to the second guide rail 5 and the third guide rail 6, and the upper nut of the ball screw 8 is connected to the bottom surface of the mounting bottom plate 7; one end of the ball screw 8 is provided with a ball screw driving device 9;
the servo motor 10 is arranged on the mounting base plate 7, and an output shaft of the servo motor is vertical to the second guide rail 5, namely vertical to the axial direction of the roller 100; the end part of the output shaft extends out of the side edge of the mounting bottom plate 7 and is provided with a grinding wheel 11 for grinding a roller;
the magnetorheological elastomer device 12 is arranged on a third sliding block on the third guide rail 6 and is rigidly connected with the servo motor 10 through a connecting plate 13; it includes:
a body 121, which is a shell with an opening at the upper end, and the shell is made of magnetic conductive metal; the inner wall of the shell is provided with the electromagnetic coil 122 along the circumferential direction, and a lead 1221 led out of the shell is arranged; a permanent magnet sheet 123 is arranged at the bottom in the shell, a metal magnetic conductive sheet 124 and a magnetorheological elastomer sheet 125 are alternately arranged from bottom to top in sequence, and an end connecting sheet 126 is arranged on the metal magnetic conductive sheet 124 positioned at the port of the shell to seal the port of the shell; the permanent magnet sheet 123, the metal magnetic conductive sheet 124, the magnetorheological elastomer sheet 125 and the end connecting sheet 126 are respectively provided with mutually through mounting through holes to form a mounting channel 120;
the tube body of the heat conduction tube 127 sequentially penetrates through the installation channel 120 formed by the installation through holes on the permanent magnet sheet 123, the metal magnetic conduction sheet 124, the magnetorheological elastomer sheet 125 and the end connection sheet 126, the openings at two ends of the heat conduction tube 127 are positioned outside the body 121, and the heat conduction tube 127 is internally filled with cooling liquid;
and the acceleration sensor 15 is arranged on the servo motor 10 or the connecting plate 13.
Referring to fig. 1, the utility model discloses still be equipped with elevating system 14, it includes:
a frame 141;
the lifting guide rail 142 and the lifting slider 1421 thereof, wherein the lifting guide rail 142 is vertically arranged on the rack 141; the bottom plate is connected to the lifting slider 1421 through a connecting piece;
the lifting driving device 143 is disposed on one side of the lifting rail 142, and an output end of the lifting driving device is connected to the lifting slider 1421.
Preferably, the ball screw drive device 9 includes: the driving motor 91 is arranged on one side of the bottom plate 1, the output end of the driving motor is provided with a driving belt pulley 92, correspondingly, the end part of the ball screw 8 is provided with a driven belt pulley 93, and the driving belt pulley 92 is connected with the end part of the ball screw through a transmission belt 94.
Preferably, the elevation driving means 133 includes: and a lifting hydraulic cylinder 1331 vertically arranged at one side of the frame 131, wherein a connecting piece 1332 is provided at the end of a piston rod of the lifting hydraulic cylinder 1331 and is connected with the lifting slider 1321.
Preferably, the body 121 is a cylindrical housing.
Preferably, a plurality of heat dissipation fins 128 are uniformly distributed on the outer wall of the body 121 along the circumferential direction.
Preferably, the permanent magnet sheet, the metal magnetic conductive sheet, the magnetorheological elastomer sheet and the mounting through holes on the end connecting sheet form two mounting channels, and two heat conduction pipes are correspondingly arranged to form a two-in and two-out structure.
Preferably, the heat conducting pipe 127 is a silicone hose.
Referring to fig. 9, in the present embodiment, two grinding devices, i.e. servo motors 10, 10 'and grinding wheels 11, 11', are arranged side by side on the second guide rail 5, and are connected with the magnetorheological elastomer device 12 through a connecting plate 13 to form a rigid system, which also has the same effect of avoiding resonance.
When the acceleration sensor detects the horizontal acceleration exceeding a set value, the system enters a resonance interval, at the moment, the current is introduced into the magnetorheological elastomer device, the rigidity of the system is changed, the resonance frequency point is shifted, the acceleration amplitude of the system is obviously reduced, and the generation of vibration lines during processing is avoided.
Claims (8)
1. An online grinding device for a roller with variable rigidity is characterized by comprising:
the two sides of the upper end surface of the bottom plate are provided with two first guide rails and first sliding blocks thereon in parallel along the length direction; the first guide rail is vertical to the axial direction of the roller;
the movable bottom plate is arranged on the first sliding block on the first guide rail;
the electric push rod is arranged in the center of one side of the movable bottom plate, and the output end of the electric push rod is connected with the bottom surface of the movable bottom plate;
the second guide rail and the third guide rail are arranged on two sides of the upper end surface of the movable bottom plate in parallel and are vertical to the first guide rail;
one side of the bottom surface of the mounting bottom plate is connected to the second sliding block on the second guide rail;
the ball screw is arranged between the second guide rail and the third guide rail on the movable bottom plate and is parallel to the second guide rail and the third guide rail, and an upper nut of the ball screw is connected to the bottom surface of the mounting bottom plate; one end of the ball screw is provided with a ball screw driving device;
the servo motor is arranged on the mounting base plate, and an output shaft of the servo motor is vertical to the second guide rail, namely, is vertical to the axial direction of the roller; the end part of the output shaft extends out of the side edge of the mounting bottom plate and is provided with a grinding wheel for grinding a roller;
the magnetorheological elastomer device is arranged on a third sliding block on the third guide rail and is rigidly connected with the servo motor through a connecting plate; it includes:
the body is a shell with an opening at the upper end, and the shell is made of magnetic conductive metal; the inner wall of the shell is provided with an electromagnetic coil along the circumferential direction, and a lead is led out of the shell; the bottom in the shell is provided with a permanent magnet sheet, and a metal magnetic conduction sheet and a magnetorheological elastomer sheet are sequentially and alternately arranged from bottom to top; the permanent magnet sheet, the metal magnetic conductive sheet, the magnetorheological elastomer sheet and the end connecting sheet are respectively provided with mutually communicated mounting through holes to form mounting channels;
the tube body of the heat conduction tube sequentially penetrates through an installation channel formed by installation through holes in the permanent magnet sheet, the metal magnetic conduction sheet, the magnetorheological elastomer sheet and the end connecting sheet, openings at two ends of the heat conduction tube are positioned outside the body, and cooling liquid is filled in the heat conduction tube;
and the acceleration sensor is arranged on the servo motor or the connecting plate.
2. The variable-stiffness roll on-line grinding device according to claim 1, further comprising an elevating mechanism including:
a frame;
the lifting guide rail and the lifting slide block are vertically arranged on the rack; the bottom plate is connected to the lifting slide block through a connecting piece;
and the lifting driving device is arranged on one side of the lifting guide rail, and the output end of the lifting driving device is connected with the lifting slide block.
3. The variable-stiffness roll on-line grinding device as claimed in claim 1, wherein the ball screw driving means includes: and the driving motor is arranged on one side edge of the bottom plate, the output end of the driving motor is provided with a driving belt pulley, correspondingly, the end part of the ball screw is provided with a driven belt pulley and is connected with the driving belt pulley through a transmission belt.
4. The variable-stiffness roll on-line grinding device according to claim 2, wherein the elevating driving means comprises: and the lifting hydraulic cylinder is vertically arranged on one side of the rack, and the end part of a piston rod of the lifting hydraulic cylinder is provided with a connecting piece connected with the lifting slide block.
5. The variable stiffness roll in-line grinding apparatus of claim 1 wherein the body is a cylindrical housing.
6. The variable-rigidity roll on-line grinding device according to claim 1 or 5, wherein a plurality of radiating fins are uniformly distributed on the outer wall of the body along the circumferential direction.
7. The variable-stiffness on-line grinding device for the roller according to claim 1, wherein the mounting through holes on the permanent magnet sheet, the metal magnetic conductive sheet, the magnetorheological elastomer sheet and the end connecting sheet form two mounting channels, and two heat conduction pipes are correspondingly arranged to form a two-in two-out structure.
8. The variable-stiffness roll on-line grinding device according to claim 1 or 7, wherein the heat-conducting pipe is a silicone hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221603974.5U CN217800638U (en) | 2022-06-24 | 2022-06-24 | Variable-rigidity roller online grinding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221603974.5U CN217800638U (en) | 2022-06-24 | 2022-06-24 | Variable-rigidity roller online grinding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217800638U true CN217800638U (en) | 2022-11-15 |
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ID=83992927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221603974.5U Active CN217800638U (en) | 2022-06-24 | 2022-06-24 | Variable-rigidity roller online grinding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217800638U (en) |
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2022
- 2022-06-24 CN CN202221603974.5U patent/CN217800638U/en active Active
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