An online shaping device for in-service rolls

Abstract

The invention discloses an in-service roll online shaping device, which relates to the technical field of roll grinding, and comprises a rolling mill main body, a centering mechanism, a moving mechanism and a grinding mechanism. The rolling mill main body comprises a working roll, reference annular parts are arranged at both ends of the working roll, centering mechanisms are arranged on both sides of the reference annular parts of the working roll, a moving mechanism is arranged on the side of the working roll, and a plurality of grinding mechanisms are arranged on the moving mechanism; by arranging the centering mechanism, the working roll is pushed to a suspended position to ensure accurate centering of the axis of the working roll, thereby improving the accuracy of the grinding shape of the roll; the axis position of the working roll can be accurately calculated by the telescopic amount of the telescopic rod, and accurate roll position parameters are provided for the grinding mechanism control system; by arranging the detection mechanism, the shape change of the working roll can be accurately detected; by arranging the moving mechanism, the positions of the detection mechanism and the grinding mechanism can be accurately adjusted to ensure more accurate detection and grinding of the working roll.

Description

Technical Field

[0001] The invention relates to the technical field of roller grinding, and in particular to an online shaping device for an in-service roller. Background Art

[0002] The main parts of the rolling mill include the frame, bearing seat and rolls. The rolls that are in direct contact with the rolled product are working rolls. The accuracy and flatness of their surface shape directly affect the quality of the rolled product. During the long-term use of the working rolls, their surfaces will be deformed and worn. The working rolls need to be regularly ground to maintain the accuracy and flatness of the working roll surfaces. The traditional method of grinding rolls is to remove the rolls from the rolling mill and transfer them to the grinding workshop for grinding. The grinding accuracy is high, but the roll replacement process affects production efficiency. Under traditional process conditions, after a set of rolls are installed, they wear unevenly during use, causing the edge of the strip to thin, affecting the quality of the strip, and only narrower and narrower strips can be rolled. Therefore, an in-service roll online shaping device is needed, which can realize accurate detection and grinding of the roll shape to improve the grinding accuracy, and can also increase the rolling time of the same width strip, and can also realize free rolling, that is, the width of the strip can be freely changed. Summary of the invention

[0003] In view of the above technical problems, the technical solution adopted by the present invention is: an online shaping device for in-service rolls, comprising a rolling mill body, a centering mechanism, a moving mechanism and a grinding mechanism, wherein the rolling mill body comprises a working roll, reference annular portions are arranged at both ends of the working roll, centering mechanisms are arranged on both sides of the reference annular portion of the working roll, a moving mechanism is arranged on the side of the working roll, a plurality of grinding mechanisms are arranged on the moving mechanism, the moving mechanism is used to adjust the position of the grinding mechanism, and the grinding mechanism is used to grind the surface of the working roll.

[0004] Furthermore, the centering mechanism includes an oil cylinder, a telescopic rod is provided on the oil cylinder, and a rolling pulley is provided on the telescopic rod.

[0005] Furthermore, the moving mechanism includes a first linear motion component and a second linear motion component, the first linear motion component is provided with a slewing bearing 1, and the second linear motion component is rotatably provided on the slewing bearing 1.

[0006] Furthermore, the first linear motion component includes a guide rail seat 1, a linear rail 1 is fixedly mounted on the guide rail seat 1, a slider 1 is slidably mounted on the linear rail 1, a slide plate 1 is arranged on the slide plate 1, a plane guide rail and a V-shaped guide rail are arranged on the guide rail seat 1, the slide plate 1 is slidably mounted on the V-shaped guide rail, the plane guide rail is used to support the slide plate 1, and a slewing bearing 1 is arranged on the slide plate 1.

[0007] Furthermore, the second linear motion assembly includes a rotating plate, on which a planar guide rail and a V-shaped guide rail are arranged, and a feed slide plate 1 is slidably mounted on the planar guide rail and the V-shaped guide rail.

[0008] Furthermore, the moving mechanism includes a first adjusting component and a second adjusting component, the first adjusting component is provided with a second slewing bearing, and the second slewing bearing is rotatably provided with the second adjusting component.

[0009] Furthermore, the first adjustment component includes a guide rail seat 2, on which two cylindrical guide rails are symmetrically arranged, and the parts of the two cylindrical guide rails that are in contact with the cylindrical slider belong to the same cylindrical surface, and a linear track 2 is fixedly installed on the guide rail seat 2, and a slider 2 is slidably installed on the linear track 2, and the slider 2 and the slide plate 2 are slidably installed, and the slider 2 is used to drive the slide plate 2 to move horizontally, and two cylindrical sliders are symmetrically arranged on both sides of the slide plate 2, and the two cylindrical sliders are slidably installed on the two cylindrical guide rails, and the two cylindrical sliders can rotate on the two cylindrical guide rails, and the slide plate 2 is provided with a slewing bearing 2.

[0010] Furthermore, the second adjustment component includes a rotating support, on which a linear track 2 is fixedly mounted, on which a slider 2 is slidably mounted, and the slider 2 is used to drive the feed slider 2 to move horizontally. The rotating support is also provided with two cylindrical guide rails, and the two cylindrical guide rails are coaxial. Two cylindrical sliders are provided on the slider 2, and the cylindrical sliders are slidably mounted on the cylindrical guide rails of the rotating support, and the cylindrical sliders can rotate on the cylindrical guide rails of the rotating support.

[0011] Furthermore, the grinding mechanism includes a motor, the motor is connected to the grinding wheel through a synchronous belt assembly, and the grinding wheel is rotatably mounted on a grinding wheel bracket.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) by setting a centering mechanism, the present invention can push the working roll to a suspended position, ensure the accurate centering of the axis of the working roll, thereby improving the accuracy of the grinding shape of the roll. After the grinding shape accuracy of the roll is improved, the accuracy of the rolled product can be improved under the same process conditions; (2) when the position of the working roll changes, the axis position of the working roll can be accurately calculated by the extension and contraction amount of the telescopic rod, and the accurate roll position parameters are provided to the grinding mechanism control system, thereby realizing accurate grinding of the roll shape; (3) by setting a detection mechanism, the present invention can accurately detect the shape change of the working roll, provide accurate data for subsequent grinding work, and improve the grinding quality of the roll shape; (4) by setting a moving mechanism, the present invention can accurately adjust the positions of the detection mechanism and the grinding mechanism, ensuring more accurate detection and grinding of the working roll. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of Embodiment 1 of the present invention.

[0014] Figure 2 This is a structural diagram of Embodiment 2 of the present invention.

[0015] Figure 3 It is a side view of an embodiment of the present invention.

[0016] Figure 4 It is a schematic diagram of the structure of the grinding mechanism of the present invention.

[0017] Figure 5 This is a schematic diagram of the structure of the moving mechanism of the first embodiment of the present invention.

[0018] Figure 6 This is a schematic diagram of the structure of the moving mechanism of the second embodiment of the present invention.

[0019] Figure numbers: 101-machine body; 102-bearing seat; 103-working roller; 201-oil cylinder; 202-telescopic rod; 203-rolling pulley; 301-motor; 302-pulley; 303-belt; 304-grinding wheel bracket; 305-grinding wheel; 401-guide rail seat one; 402-plane guide rail; 403-linear rail one; 404-slider one; 405-V-guide rail; 406-slide plate one; 407-slewing bearing one; 408-rotating plate; 409-feed slide plate one; 410-guide rail seat two; 411-cylindrical guide rail; 412-linear rail two; 413-cylindrical slide plate; 414-slide plate two; 415-slewing bearing two; 416-rotating support; 417-feed slide plate two; 418-slide plate two. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods. Embodiment 1

[0021] like Figure 1 , Figure 3 , Figure 4 , Figure 5 An in-service roll online shaping device is shown. In this embodiment, the plane guide rail 402, the V-shaped guide rail 405 and the mechanical centering of the centering mechanism are mainly used. The centering mechanism can output a force that can lift the working roll 103, and has a mechanical limit. It is mainly suitable for grinding the roll in the rolling gap. All inspections and grinding are carried out in the rolling gap. The inspection and grinding are carried out after the main pressure down in the rolling gap is removed, and the working roll 103 is pushed up by the centering mechanism and reaches the position of the mechanical limit. At this time, the working roll 103 is mechanically centered and ground by the grinding mechanism.

[0022] An in-service roll online shaping device comprises a rolling mill body, a centering mechanism, a moving mechanism and a grinding mechanism. The rolling mill body comprises a machine body 101, a bearing seat 102 and a working roll 103. Two working rolls 103 are symmetrically arranged. Both ends of each working roll 103 are rotatably mounted on the bearing seat 102. The bearing seat 102 is arranged on the machine body 101. A reference annular portion is respectively arranged at both ends of the working roll 103, and its axis is coaxial with the roll body of the working roll 103. The reference annular portion is used as a reference for online and offline roll grinding.

[0023] Centering mechanisms are provided on both sides of the reference annular portion of the working roll 103 , and a moving mechanism is provided on the side of the working roll 103 . Two sets of grinding mechanisms are provided on the moving mechanism. The moving mechanism is used to adjust the position of the grinding mechanism, and the grinding mechanism is used to grind the surface of the working roll 103 .

[0024] The centering mechanism includes an oil cylinder 201 , a telescopic rod 202 and a rolling pulley 203 . The oil cylinder 201 is fixedly mounted on the machine body 101 . The oil cylinder 201 is provided with a telescopic rod 202 . The telescopic rod 202 is provided with a rolling pulley 203 .

[0025] The moving mechanism includes a first linear motion component and a second linear motion component. A slewing bearing 407 is fixedly mounted on the first linear motion component. The second linear motion component is rotatably mounted on the slewing bearing 407. The second linear motion component is driven to rotate on the slewing bearing 407 by a rotating device.

[0026] The first linear motion assembly includes a guide rail seat 401, a plane guide rail 402, a linear track 403, a slider 404, a V-shaped guide rail 405 and a slide plate 406. The guide rail seat 401 is fixedly mounted on the machine body 101, a linear track 403 is fixedly mounted on the guide rail seat 401, a slider 404 is slidably mounted on the linear track 403, the slider 404 is driven by a power device to slide on the linear track 403, a slide plate 406 is arranged on the slider 404, and the guide rail seat 401 is fixedly mounted on the machine body 101. A plane guide rail 402 and a V-shaped guide rail 405 are provided. The portion where the slide plate 406 contacts the plane guide rail 402 is provided in a plane, and the portion where the slide plate 406 contacts the V-shaped guide rail 405 is provided in a V shape. The slide plate 406 is slidably installed on the V-shaped guide rail 405. A pre-tightening mechanism is provided between the slider 404 and the slide plate 406 to ensure the thickness of the guide rail oil film and thus ensure the movement accuracy. The plane guide rail 402 is used to support the slide plate 406, and a slewing bearing 407 is fixedly installed on the slide plate 406.

[0027] The second linear motion component includes a rotating plate 408 and a feed slide 409. The rotating plate 408 is rotatably mounted on a slewing bearing 407. The rotating plate 408 is driven to rotate by a slewing device. A plane guide rail 402 and a V-shaped guide rail 405 are arranged on the rotating plate 408. The feed slide 409 is driven by a power device to slide on the plane guide rail 402 and the V-shaped guide rail 405. The motor 301 and the grinding wheel bracket 304 are fixedly mounted on the feed slide 409.

[0028] The grinding mechanism includes a motor 301, a synchronous belt assembly, a grinding wheel bracket 304 and a grinding wheel 305. The motor 301 is connected to the grinding wheel 305 through the synchronous belt assembly, and the grinding wheel 305 is rotatably mounted on the grinding wheel bracket 304; the synchronous belt assembly includes a pulley 302 and a belt 303. Two pulleys 302 are provided. The first pulley 302 is fixedly mounted on the output shaft of the motor 301, and the second pulley 302 and the grinding wheel 305 are coaxially fixedly mounted. The belt 303 is sleeved on the two pulleys 302, and the two pulleys 302 are transmitted through the belt 303.

[0029] A detection mechanism is also provided on the moving mechanism, which includes an eddy current sensor and a laser displacement sensor. The eddy current sensor is arranged on a linear module, and the linear module is used to adjust the radial movement of the eddy current sensor in the working roller 103. The linear module and the laser displacement sensor are arranged on a feed slide 409.

[0030] Centering mechanism: The mechanical centering mechanism at the roll end of the working roll 103 is composed of an oil cylinder 201, a telescopic rod 202 and a rolling pulley 203. When the detection mechanism detects that the shape of the working roll 103 does not meet the production requirements, the rolling mill presses down the system pressure to release in the rolling gap, and controls the telescopic rod 202 to extend and retract. A rolling pulley 203 is installed on the top of the telescopic rod 202. The rolling pulley 203 cooperates with the rolling groove of the reference circular ring part of the shaft end of the working roll 103. When the telescopic rods 202 on both sides of the working roll 103 are extended, the working roll 103 is pushed to a suspended state, and the working roll 103 is rigidly positioned to ensure the mechanical centering requirements of the axis.

[0031] Detection mechanism: mainly composed of eddy current sensor and laser displacement sensor. Eddy current sensor: using eddy current effect, the magnetic field changes when the metal roller approaches, and the magnetic field changes differently with different roller wear levels; laser displacement sensor: the top of the sensor emits a laser, which hits the roller body and is received by the receiver. The shape of the roller and the coordinates of the position that needs to be ground can be calculated based on the laser propagation speed and time; when the feed slide 409 moves axially, the eddy current sensor on the feed slide 409 detects the working roller 103. If the distance between the working roller 103 and the eddy current sensor is far beyond the measuring range of the eddy current sensor, it can be detected. A linear module is used to control the radial movement of the eddy current sensor along the working roller 103 to ensure that the eddy current sensor does not exceed the range, thereby ensuring accuracy. The eddy current sensor or the laser sensor can be used for detection alone, or both can be used for detection at the same time. The shape of the working roller 103 is detected by the eddy current sensor or the laser sensor, and the position coordinates required for grinding are accurately located by the laser displacement sensor. After data analysis, the signal is transmitted to the grinding mechanism. The grinding mechanism automatically adjusts the shape of the grinding wheel 305 according to the data analysis, and controls the grinding wheel 305 to move to the position coordinates required for grinding given by the detection mechanism for grinding.

[0032] Grinding part: First, the centering mechanism centers the mechanical axis of the working roller 103 and rigidly positions the working roller 103. Then, the working roller 103 is detected by the detection mechanism on the feed slide 409. After the shape of the working roller 103 and the position to be ground are detected, the feed slide 409 is adjusted to approach the working roller 103 by the power device, and the grinding wheel 305 is driven to grind different positions of the working roller 103 by adjusting the position of the slide 406. A plane guide rail 402 and a V-shaped guide rail 405 are respectively installed at the bottom of the slide 406 and the feed slide 409. The guide rail adopts a linear follow-up preload method and is equipped with a preload spring device. This device always applies a constant elastic force to the slider on the guide rail, so that the oil film at the position where the slider contacts the guide rail always maintains the same thickness, thereby ensuring the movement accuracy of the grinding mechanism. Embodiment 2

[0033] like Figure 2 , Figure 3 , Figure 4 and Figure 6 An in-service roll online shaping device is shown. The in-service roll online shaping device provided in Example 2 is basically the same as that in Example 1, except that it mainly uses cylindrical guide rails and roll position detection, the centering mechanism does not have a large output function and has no mechanical limit, and the centering mechanism is used to detect the axial position of the working roll 103. This embodiment adopts a cylindrical guide rail 411, and by deflecting the cylindrical slider 413 on the cylindrical guide rail 411, it is ensured that the grinding mechanism tracks and grinds the detected position of the working roll 103 in real time.

[0034] The moving mechanism includes a first adjusting component and a second adjusting component. The first adjusting component is fixedly mounted on the machine body 101. A second slewing bearing 415 is fixedly mounted on the first adjusting component. The second slewing bearing 415 is rotatably mounted on the second adjusting component. The second adjusting component is driven to rotate by the rotating device.

[0035] The first adjustment component includes a guide rail seat 410, a cylindrical guide rail 411, a linear rail 412, a cylindrical slider 413, a slide plate 414 and a slide plate 418. The guide rail seat 410 is fixedly mounted on the body 101. Two cylindrical guide rails 411 are symmetrically arranged on the guide rail seat 410. The parts of the two cylindrical guide rails 411 that contact the cylindrical slider 413 belong to the same cylindrical surface. Two linear rails 412 are fixedly mounted on the guide rail seat 410. A slide plate 418 is slidably mounted on the linear rail 412. A driving plate is fixedly mounted on the slide plate 418. A linear slide groove is arranged at the bottom of the slide plate 414. The linear slide groove on the slide plate 414 The direction of the slide groove is set perpendicular to the direction of the linear track 412. The driving plate on the slider 418 is slidably installed inside the linear slide groove of the slide plate 414. The slider 418 is hinged with a cylinder. The telescopic rod of the cylinder is hinged with the slide plate 414. The slider 418 is driven to move by a power device, and the slide plate 414 is pushed to reciprocate by the slider 418. Two cylindrical sliders 413 are symmetrically arranged on both sides of the slide plate 414. The two cylindrical sliders 413 are slidably installed on the two cylindrical guide rails 411, and the cylindrical sliders 413 can be driven by the cylinder to deflect on the cylindrical guide rails 411. A slewing bearing 415 is fixedly installed on the slide plate 414.

[0036] The second adjustment component includes a rotating support 416 and a second feed slide 417. The rotating support 416 is rotatably mounted on the second slewing support 415. The rotating support 416 is driven to rotate by a slewing device. A second linear track 412 is fixedly mounted on the rotating support 416. A second slider 418 is slidably mounted on the second linear track 412. A driving plate and an oil cylinder are provided on the second slider 418. The driving plate and the second feed slide 417 are slidably mounted. The second slider 418 is driven to move by a power device, and the feed slide 417 is pushed by the second slider 418. The feed slide 417 reciprocates, and two cylindrical guide rails 411 are also provided on the rotating support 416. The cylindrical guide rails 411 on the rotating support 416 are horizontally arranged. A cylindrical slider 413 is provided on the feed slide 417. The cylindrical slider 413 on the feed slide 417 is slidably installed on the cylindrical guide rails 411 of the rotating support 416, and the cylindrical slider 413 can be driven by the cylinder to deflect on the cylindrical guide rails 411. The feed slide 417 is fixedly installed with a motor 301 and a grinding wheel bracket 304.

[0037] The structural settings of other parts of this embodiment refer to the first embodiment.

[0038] This embodiment is to detect the movement of the axis and grinding following the working roller 103. According to the extension and contraction amount of the telescopic rod 202 of the centering mechanism, the position of the axis of the working roller 103 is fed back through calculation. At the same time, the detection mechanism on the mobile mechanism is controlled to detect the roller shape of the current working roller 103 and the position required for grinding; the mobile mechanism adjusts the grinding wheel 305. When the preparation work of the grinding wheel 305 is completed, the position of the grinding wheel 305 is adjusted by the axial movement of the slide plate 414, and the feeding work of the grinding wheel 305 is completed by the radial movement of the feed slide plate 417, and the working roller 103 is ground. The cylindrical guide rail 411 of the grinding mechanism is designed to be cylindrical in shape and is equipped with a pre-loaded spring device to ensure that the oil film thickness at the contact position is the same. The purpose of the cylindrical guide rail structure design is to enable the cylindrical slider 413 on the guide rail to deflect at a certain angle when necessary. When the axis of the working roller 103 changes, the deflection function of the cylindrical guide rail can be used. According to the axis position fed back by the centering mechanism of the working roller 103, the grinding wheel 305 on the grinding mechanism is controlled to deflect according to the deflectable function of the guide rail, so that the axis of the grinding wheel 305 is parallel to the axis of the working roller 103, thereby ensuring the grinding accuracy. Embodiment 3

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 An in-service roll online shaping device is shown. This embodiment is a combination of the first and second embodiments. A cylindrical guide rail and a centering mechanism are used. The centering mechanisms at both ends can achieve mechanical centering of the working roll 103 for rolling gap grinding, or can perform real-time tracking detection without centering the working roll 103, for grinding the roll during the rolling process.

[0040] The centering mechanism pushes the working roll 103 to a suspended position, so that the working roll 103 is out of the rolling state. The position of the axis of the working roll 103 can also be calculated by the extension and contraction amount of the telescopic rod 202, and this data is fed back to the grinding mechanism. The grinding wheel 305 adjusts the axis of the grinding wheel 305 and the axis of the working roll 103 to be parallel through the deflection function of the slewing bearing 415 and the cylindrical slider 413. The shape of the working roll 103 is detected by the detection mechanism on the feed slide 417 to determine the position that needs to be ground, and then the feedback is given to the grinding mechanism to dress the grinding wheel 305. When the dressing of the grinding wheel 305 and the preparation work of the detection mechanism are completed, the grinding mechanism grinds the working roll 103.

Claims

1. An in-service roll online shaping device, comprising a rolling mill body, a centering mechanism, a moving mechanism and a grinding mechanism, wherein the rolling mill body comprises a working roll (103), characterized in that: Reference annular parts are arranged at both ends of the working roll (103), centering mechanisms are arranged on both sides of the reference annular part of the working roll (103), a moving mechanism is arranged on the side of the working roll (103), a plurality of grinding mechanisms are arranged on the moving mechanism, the moving mechanism is used to adjust the position of the grinding mechanism, and the grinding mechanism is used to grind the surface of the working roll (103); The moving mechanism comprises a first adjusting component and a second adjusting component, the first adjusting component is provided with a second slewing bearing (415), and the second slewing bearing (415) is rotatably provided with the second adjusting component; The first adjustment component comprises a second guide rail seat (410), on which two cylindrical guide rails (411) are symmetrically arranged, and the parts of the two cylindrical guide rails (411) in contact with the cylindrical slider (413) belong to the same cylindrical surface, a second linear rail (412) is fixedly installed on the second guide rail seat (410), and a second slider (418) is slidably installed on the second linear rail (412), and the second slider (418) and the second slide plate (414) are slidably installed, and the second slider (418) is used to drive the second slide plate (414) to move horizontally, and two cylindrical sliders (413) are symmetrically arranged on both sides of the second slide plate (414), and the two cylindrical sliders (413) are slidably installed on the two cylindrical guide rails (411), and the two cylindrical sliders (413) can deflect on the two cylindrical guide rails (411), and the second slide plate (414) is provided with a second slewing bearing (415).

2. The in-service roll online shaping device according to claim 1, characterized in that: The centering mechanism comprises an oil cylinder (201), a telescopic rod (202) is arranged on the oil cylinder (201), and a rolling pulley (203) is arranged on the telescopic rod (202).

3. The in-service roll online shaping device according to claim 1, characterized in that: The second adjustment component includes a rotating support (416), on which a second linear track (412) is fixedly mounted, on which a second slider (418) is slidably mounted, and the second slider (418) is used to drive the second feed slider (417) to move horizontally. The rotating support (416) is also provided with two cylindrical guide rails (411), and the second slider (417) is provided with a cylindrical slider (413), and the cylindrical slider (413) is slidably mounted on the cylindrical guide rail (411) of the rotating support (416), and the cylindrical slider (413) can deflect on the cylindrical guide rail (411) of the rotating support (416).

4. The in-service roll online shaping device according to claim 1, characterized in that: The grinding mechanism comprises a motor (301), the motor (301) being connected to a grinding wheel (305) via a synchronous belt assembly, and the grinding wheel (305) being rotatably mounted on a grinding wheel bracket (304).

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