Surface cutting device and method for hot-rolled steel
By using circumferentially distributed support balls and micro-elastic components, the problem of tool chipping under high temperature and impact in traditional hot-rolled bar cutting devices is solved, realizing adaptive adjustment of the cutting tool and efficient and stable cutting, improving the uniformity of cutting thickness and tool life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- LAIWU WEILAITE MECHANICAL EQUIP CO LTD
- Filing Date
- 2026-05-08
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional hot-rolled bar surface cutting devices are susceptible to instantaneous impacts during the cutting process, resulting in chipped cutting tools, short lifespan, and inability to adapt to high-temperature thermal expansion and contraction and surface inhomogeneity, which affects processing efficiency and cost.
The design employs circumferentially distributed support balls and micro-elastic components. The support balls roll to support the bar, while the micro-elastic components absorb impact loads. The cutting tool self-adjusts according to the shape of the bar. Combined with disc springs and hydraulic rods, it absorbs the impact of thermal expansion and contraction, reducing friction and impact, and extending tool life.
It significantly reduces the risk of cutting tool chipping, extends tool life by 2-3 times, reduces the cutting thickness uniformity error to within ±0.05mm, reduces energy consumption, and improves the versatility and stability of the device under high temperature environments.
Smart Images
Figure CN122425260A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of metal cutting technology, specifically to a surface cutting device and method for hot-rolled steel. Background Technology
[0002] Hot rolling is one of the mainstream forming processes for metal bars, with advantages such as high production efficiency, low forming difficulty, and suitability for large-scale production. However, due to the characteristics of the hot rolling process, the surface of the formed metal bars (especially the smaller hot-rolled bars) inevitably produces defects such as oxide scale, microcracks, and rolling marks. Some bars may also have uneven surfaces due to deviations in rolling process control. In order to meet the requirements of industrial production for the surface finish of bars, surface defects must be removed by surface cutting before hot-rolled bars leave the factory or before subsequent deep processing, so that the surface of the bars reaches the preset precision standard. Therefore, efficient and stable surface cutting equipment is an essential piece of equipment in the hot-rolled bar processing industry chain.
[0003] Currently, the mainstream method for surface cutting of hot-rolled bars in the industry is traditional turning-based cutting devices. The core structure and working principle are as follows: the bar is fixed to the lathe spindle using a chuck or other clamps, a motor drives the bar to rotate, and a cutting tool fixed on a tool post, through fixed feed or simple linear feed, turns the surface of the rotating bar to remove surface defects. The core design of this type of device is the coordination of tool fixation and bar rotation, resulting in a relatively simple structure, low manufacturing cost, and suitability for early production scenarios with lower requirements for bar surface precision. It is a commonly used piece of equipment in small and medium-sized metal processing enterprises.
[0004] The following key issues exist in the processing of small hot-rolled bars: 1. Cutting tools are susceptible to instantaneous impacts, resulting in a high risk of chipping and breakage. Due to the precision limitations of the rolling process, small hot-rolled bars often have uneven surface hardness, local protrusions (rolling defects), and local hard spots. During high-speed rotating cutting, these uneven points will suddenly come into contact with the cutting tool, generating instantaneous and severe radial impact loads. Traditional cutting tools are fixedly installed and lack effective impact absorption structures, making it impossible to buffer such instantaneous impacts. This easily leads to chipping, breakage, or even tool fracture. 2. Short tool life and high production costs. Due to the frequent occurrence of the aforementioned instantaneous impacts, the wear rate of the cutting tool is much higher than under normal processing conditions, requiring frequent machine stops to replace the tool. This not only increases the procurement cost of the tool but also interrupts the production process due to machine stoppages for tool replacement, reducing overall processing efficiency. Hot-rolled bars remain at high temperatures during the cutting process, with surface temperatures reaching 300℃-600℃ and radial thermal expansion and contraction ranging from 0.5mm to 3mm. Furthermore, the surface contains oxide scale, localized hard spots, and protrusions, causing the cutting tool to endure frequent and severe radial impacts and thermal fatigue loads during the cutting process. Traditional rigid tool mounting methods cannot adapt to this coupled thermal deformation and impact condition, resulting in a high tool breakage rate and short tool life.
[0005] Therefore, the present invention proposes a surface cutting device and method for hot-rolled steel. Summary of the Invention
[0006] The purpose of this invention is to provide a surface cutting device and method for hot-rolled steel to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, the present invention provides the following technical solution: a surface cutting device and method for hot-rolled steel, comprising a cutting table, a linear module embedded in the top of the cutting table, a slide fixedly mounted at the output end of the linear module, a motor fixedly mounted on the top of the slide, a clamping member fixedly connected to the output end of the motor, the clamping member fixedly clamping a bar, a mounting frame fixedly mounted on the top of the cutting table, an annular frame fixedly mounted on the mounting frame, multiple sliders slidably mounted on one side of the annular frame, the multiple sliders being circumferentially distributed around the hollow of the annular frame, a mounting cover fixedly mounted on the side of each slider near the axis, a support ball rollingly sleeved inside the mounting cover, and the end of the bar away from the motor passing through the hollow of the annular frame. The rod contacts multiple support balls. Each slider has a cutting blade fixedly installed on the side away from the ring frame for cutting the surface of the rod. Each slider also has a micro-elastic element fixedly installed on the side away from the support balls to absorb the impact load of the rod on the cutting blade at a certain moment. The motor is started to drive the rod to rotate, and the linear module is started to drive the rod to move slowly and uniformly towards the side closer to the ring frame. After one end of the rod passes through the center of the ring frame, it first contacts multiple support balls distributed in a circle. The multiple support balls can support the other end of the rod to ensure the stability of the rod during cutting. When the rod moves, it will drive the support balls to roll, thus reducing the friction generated when the support balls support the rod, thereby reducing the reaction force on the motor and the linear module, and thus reducing the energy consumption of the motor and the linear module.
[0008] Preferably, the micro-elastic element includes a mounting plate, which is fixedly disposed on one side of the ring frame. A slide rod is fixedly connected to the side of the mounting plate near the slider. A disc spring assembly is movably sleeved on the outside of the slide rod. A cavity is provided inside the slider, and the movable end of the slide rod is slidably sleeved inside the cavity.
[0009] Preferably, the micro-elastic element further includes a hydraulic rod, which is fixedly installed on one side of the ring frame. The output end of the hydraulic rod is fixedly connected to the slider. The hydraulic rod is used to provide follow-up extrusion thrust under the high temperature thermal expansion and contraction environment of hot rolling, and to absorb the instantaneous impact load on the surface of the bar.
[0010] Preferably, the slider has a groove on the side away from the ring frame, a sliding block is slidably sleeved inside the groove, a connecting plate is fixedly connected to the outer side of the sliding block, and the outer end of the connecting plate extends movably to the outside of the groove and is fixedly installed with a cutting blade.
[0011] Preferably, a limiting piece is fixedly connected to the side of the connecting plate, and a bolt is installed through the limiting piece. The limiting piece is fixed to the surface of the slider by the bolt.
[0012] Preferably, the inner wall of the cavity is fixedly provided with a limiting plate for restricting the sliding block from disengaging, and the size of the space formed by the end of the limiting plate and the end of the groove is adapted to the size of the sliding block.
[0013] Preferably, the clamping component includes a flange and a three-jaw chuck, the three-jaw chuck clamps one end of the bar, and the side of the three-jaw chuck away from the bar is fixedly connected to the output end of the motor through the flange.
[0014] Preferably, a surface cutting method for hot-rolled steel, the method comprising: S1. Preparation: Loosen the bolts to loosen the limit plate relative to the slider. Adjust the distance in which the cutting tool extends inward relative to the support ball according to the actual cutting depth. The extension distance ranges from 1mm to 10mm. After adjustment, tighten the bolts again to fix the cutting tool. Then adjust the three-jaw chuck so that its clamping end clamps one end of the bar. S2. Starting device: The starting motor drives the bar to rotate and starts the linear module to move the bar slowly and uniformly towards the side close to the ring frame. After one end of the bar passes through the center of the ring frame, it first contacts multiple support balls distributed around the circumference. The multiple support balls can support the other end of the bar to ensure the stability of the bar during cutting. When the bar moves, it will drive the support balls to roll, thus reducing the friction generated when the support balls support the bar, thereby reducing the reaction force on the motor and the linear module, and thus reducing the energy consumption of the motor and the linear module. S3. Cutting tool elastic self-adjustment: By setting micro elastic elements, multiple circumferentially distributed support balls can move upward by a corresponding distance according to the specific shape of the bar. The support balls then drive the slider to slide relative to the ring frame. The slider will then drive the cutting tool to adjust its height according to the shape of the bar. When the bar rotates, moves and begins to contact the cutting tool, the cutting tool will cut its surface according to the specific shape of the bar, thereby ensuring the uniformity of the cutting thickness. S4. Micro-elastic components absorb instantaneous impact loads: When the surface of the bar stock has uneven hardness or local protrusions (such as rolling defects), the high-speed rotation of the bar stock will generate instantaneous and severe impact loads on the cutting tool. When the cutting tool is subjected to impact loads, it will drive the slider to slide relative to the ring frame and squeeze the disc spring assembly and hydraulic rod. The disc spring assembly and hydraulic rod absorb the impact force through their own elasticity, thereby greatly reducing the risk of the cutting tool chipping and extending the cutting tool's life. S5. Change the cutting tool model: Unscrew the bolt, then slide the sliding block to the outermost side of the slide groove. This will allow it to disengage from the limit plate, thus removing the sliding block and freeing the cutting tool from the slider. By replacing the cutting tool with a different model, it can meet the requirements of different cutting amounts, making it more versatile.
[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting multiple circumferentially distributed support balls, this invention can not only support the other end of the bar and ensure the stability of the bar during cutting, but also ensure that the rolling support balls will not generate excessive friction on the surface of the bar, regardless of whether the bar moves axially or rotates. Therefore, when playing a supporting role, the support balls reduce the reaction force on the motor and linear module compared with ordinary support devices. 2. By setting micro-elastic elements, the present invention enables multiple circumferentially distributed support balls to move upward by a corresponding distance according to the specific shape of the bar. The support balls then drive the slider to slide relative to the ring frame. The slider, in turn, drives the cutting blade to adjust its height according to the shape of the bar. When the bar rotates, moves and begins to contact the cutting blade, the cutting blade will cut its surface according to the specific shape of the bar, thereby ensuring the uniformity of the cutting thickness. 3. The present invention provides a support ball in front of the cutting tool. When the local protrusion on the surface of the bar is large, the support ball will drive the cutting tool to be slightly raised in advance by the slider, thereby reducing the instantaneous impact of the local protrusion on the cutting tool. 4. Through the flexible fine-tuning design of the disc spring assembly and hydraulic rod, this invention can quickly respond to and absorb the radial impact brought by the bar when there are small protrusions on the surface of the bar or uneven hardness on the surface of the bar, which greatly reduces the risk of the cutting tool chipping and extends the life of the cutting tool. 5. By removing the sliding block, the cutting tool is freed from the slider, making it easier to replace different types of cutting tools and adapt to different cutting requirements, thus increasing its versatility. Attached Figure Description
[0016] Figure 1 This is a first perspective view of the present invention; Figure 2 This is a second perspective view of the present invention; Figure 3 This is a third perspective view of the present invention; Figure 4 This is a perspective view of the structure of the ring frame, cutting tool, support ball, and micro-elastic element of the present invention. Figure 5 This is a front sectional view of the support ball and micro-elastic elements of the present invention; Figure 6 For the present invention Figure 4 A magnified view of a portion of point A in the middle.
[0017] In the picture: 1. Cutting table; 2. Linear module; 21. Slide table; 3. Motor; 4. Flange; 5. Three-jaw chuck; 6. Bar stock; 7. Mounting bracket; 8. Ring frame; 81. Slider; 811. Cavity; 812. Slide groove; 813. Limiting plate; 82. Mounting plate; 83. Disc spring assembly; 84. Slide rod; 85. Hydraulic rod; 86. Mounting cover; 861. Support ball; 9. Sliding block; 91. Connecting plate; 92. Cutting blade; 93. Limiting piece; 931. Bolt. Detailed Implementation
[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] Please see Figures 1 to 6 The present invention provides the following technical solution: A surface cutting device and method for hot-rolled steel includes a cutting table 1. A linear module 2 is embedded in the top of the cutting table 1. A slide 21 is fixedly mounted at the output end of the linear module 2. A motor 3 is fixedly mounted on the top of the slide 21. A clamping member is fixedly connected to the output end of the motor 3. The clamping member clamps a bar 6. A mounting frame 7 is fixedly mounted on the top of the cutting table 1. An annular frame 8 is fixedly mounted on the mounting frame 7. Multiple sliders 81 are slidably mounted on one side of the annular frame 8. The multiple sliders 81 are hollow within the annular frame 8. The sliders are arranged in a circular pattern around the axis. Each slider 81 has a mounting cover 86 fixedly installed on one side near the axis. A support ball 861 is rolled inside the mounting cover 86. The end of the rod 6 away from the motor 3 passes through the hollow of the annular frame 8 and contacts multiple support balls 861. A cutting blade 92 for cutting the surface of the rod 6 is fixedly installed on the side of each slider 81 away from the annular frame 8. A micro-elastic element for absorbing the impact load of the rod 6 on the cutting blade 92 at a certain moment is fixedly provided on the side of each slider 81 away from the support ball 861.
[0020] As an embodiment of the present invention, as shown in the figure, the micro-elastic element includes a mounting plate 82, which is fixedly disposed on one side of the annular frame 8. A sliding rod 84 is fixedly connected to the side of the mounting plate 82 near the slider 81. A disc spring assembly 83 is movably sleeved on the outside of the sliding rod 84. A cavity 811 is provided inside the slider 81, and the movable end of the sliding rod 84 is slidably sleeved inside the cavity 811. The micro-elastic element also includes a hydraulic rod 85, which is fixedly mounted on one side of the annular frame 8. The output end of the hydraulic rod 85 is fixedly connected to the slider 81. The slider 81 has a groove 812 on one side away from the ring frame 8. A sliding block 9 is slidably sleeved inside the groove 812. A connecting plate 91 is fixedly connected to the outer side of the sliding block 9. The outer end of the connecting plate 91 extends movably to the outside of the groove 812 and is fixedly installed with a cutting blade 92. The hydraulic rod 85 is used to provide follow-up extrusion thrust in the hot rolling high temperature thermal expansion and contraction environment, absorb the instantaneous impact load on the surface of the bar, and realize the adaptive radial retraction of the cutting blade 92.
[0021] During operation, the motor 3 drives the bar 6 to rotate, and the linear module 2 drives the bar 6 to move slowly and uniformly towards the side close to the ring frame 8. After one end of the bar 6 passes through the center of the ring frame 8, it first contacts multiple rolling support balls 861. By setting multiple circumferentially distributed support balls 861, not only can the other end of the bar 6 be supported to ensure the stability of the bar 6 during cutting, but the rolling support balls 861 will not generate excessive friction on the surface of the bar 6, regardless of whether the bar 6 moves axially or rotates. Therefore, when playing a supporting role, the support balls 861 reduce the reaction force on the motor 3 and the linear module 2 compared with ordinary support devices. The hydraulic rod 85 outputs a constant extrusion thrust of 0.2kN-1.5kN, which, together with the disc spring assembly 83, forms a flexible follow-up support. It can adaptively yield in real time according to the thermal expansion and contraction of the bar, absorbing instantaneous impact loads. According to actual tests, this structure improves the impact resistance of the cutting tool 92 by more than 60%, extends the average tool life by 2-3 times, and reduces the cutting thickness uniformity error from ±0.3mm to within ±0.05mm. Even within the same batch of produced bars 6, the shapes of the bars 6 may vary slightly. By setting support balls 861 fixed to the side of slider 81, and slider 81 slidably mounted on the side of ring frame 8, and with micro-elastic elements provided on the side of slider 81 relative to support balls 861, multiple circumferentially distributed support balls 861 will move upwards by a corresponding distance according to the specific shape of the bars 6. The support balls 861 then drive slider 81 to slide relative to ring frame 8, and compress the corresponding disc spring group 83 and hydraulic rod 85 to varying degrees. Since a cutting blade 92 is fixedly provided on one side of slider 81, slider 81 will also drive the cutting blade 92 to adjust its height according to the shape of the bars 6. When the bars 6 rotate, move, and begin to contact the cutting blade 92, the cutting blade 92 will cut the surface of the bars 6 according to its specific shape, thereby ensuring the uniformity of the cutting thickness.
[0022] As an embodiment of the present invention, as shown in the figure, a limiting piece 93 is fixedly connected to the side of the connecting plate 91. A bolt 931 is installed through the limiting piece 93. The limiting piece 93 is pressed and fixed to the surface of the slider 81 by the bolt 931. A limiting plate 813 for restricting the sliding block 9 from disengaging is fixedly provided on the inner wall of the cavity 811. The size of the space formed by the end of the limiting plate 813 and the end of the groove 812 is adapted to the size of the sliding block 9.
[0023] During operation, loosen bolt 931 to loosen the limiting piece 93 relative to slider 81. Since the sliding block 9 can slide radially inside the groove 812, the distance the cutting tool 92 extends inward relative to the support ball 861 can be adjusted according to the actual cutting depth. The extension distance ranges from 1mm to 10mm. After adjustment, tighten bolt 931 again to press and fix the limiting piece 93 against slider 81. In addition, by unscrewing the bolt 931 and then sliding the sliding block 9 outward to the outermost side of the groove 812, it can be released from the limit plate 813, thereby removing the sliding block 9 and allowing the cutting tool 92 to be released from the slider 81. This makes it easier to replace different models of cutting tools 92, adapt to different cutting requirements, and has greater versatility.
[0024] As an embodiment of the present invention, as shown in the figure, the clamping member includes a flange 4 and a three-jaw chuck 5. The three-jaw chuck 5 clamps one end of the bar 6, and the side of the three-jaw chuck 5 away from the bar 6 is fixedly connected to the output end of the motor 3 through the flange 4.
[0025] During operation, adjusting the three-jaw chuck 5 will allow its clamping end to clamp one end of the bar 6. The flange 4 is used to fix the connection between the three-jaw chuck 5 and the output end of the motor 3.
[0026] A surface cutting method for hot-rolled steel, the method comprising: S1. Preparation: Loosen bolt 931 to loosen the limit plate 93 relative to the slider 81. Adjust the distance inward of the cutting tool 92 relative to the support ball 861 according to the actual cutting depth. The extension distance range is 1mm-10mm. After adjustment, tighten bolt 931 again to fix the cutting tool 92. Then adjust the three-jaw chuck 5 so that its clamping end clamps one end of the bar 6. S2. Starting device: The starting motor 3 drives the bar 6 to rotate, and the starting linear module 2 drives the bar 6 to move slowly and uniformly towards the side close to the ring frame 8. After one end of the bar 6 passes through the center of the ring frame 8, it first contacts multiple support balls 861 distributed around the circumference. The multiple support balls 861 can support the other end of the bar 6 to ensure the stability of the bar 6 during cutting. When the bar 6 moves, it will drive the support balls 861 to roll, thus reducing the friction force generated when the support balls 861 support the bar 6, thereby reducing the reaction force on the motor 3 and the linear module 2, and thus reducing the energy consumption of the motor 3 and the linear module 2. S3. Self-adjusting elastic cutting tool 92: By setting micro-elastic elements, multiple circumferentially distributed support balls 861 can move upward by a corresponding distance according to the specific shape of the bar 6. The support balls 861 then drive the slider 81 to slide relative to the ring frame 8. The slider 81 will then drive the cutting tool 92 to adjust its height according to the shape of the bar 6. When the bar 6 rotates, moves and begins to contact the cutting tool 92, the cutting tool 92 will cut its surface according to the specific shape of the bar 6, thereby ensuring the uniformity of the cutting thickness. S4. Micro-elastic components absorb instantaneous impact loads: When the surface of the bar 6 has uneven hardness or local protrusions such as rolling defects, the high-speed rotation of the bar 6 will generate instantaneous and severe impact loads on the cutting tool 92. When the cutting tool 92 is subjected to impact loads, it will drive the slider 81 to slide relative to the ring frame 8 and squeeze the disc spring assembly 83 and the hydraulic rod 85. The disc spring assembly 83 and the hydraulic rod 85 absorb the impact force through their own elasticity, thereby greatly reducing the risk of the cutting tool 92 chipping and extending the life of the cutting tool 92. S5. Change the model of cutting tool 92: Unscrew bolt 931, then slide sliding block 9 to the outermost side of slide groove 812, which will disengage from the limit plate 813, thereby removing sliding block 9 and allowing cutting tool 92 to disengage from slider 81. Different models of cutting tool 92 can be replaced to meet different cutting requirements, making it more versatile.
[0027] Working principle: Loosen the bolt 931 to loosen the limiting piece 93 relative to the slider 81. Since the sliding block 9 can slide radially inside the groove 812, the distance in which the cutting tool 92 extends inward relative to the support ball 861 can be adjusted according to the actual cutting depth. The extension distance ranges from 1mm to 10mm. After adjustment, tighten the bolt 931 again to press and fix the limiting piece 93 against the slider 81. Adjust the three-jaw chuck 5 so that its clamping end clamps one end of the bar 6. Start the motor 3 to drive the bar 6 to rotate, and start the linear module 2 to drive the bar 6 to move slowly and uniformly towards the side close to the ring frame 8. After one end of the bar 6 passes through the center of the ring frame 8, it first contacts multiple rolling support balls 861. By setting multiple circumferentially distributed support balls 861, not only can the other end of the bar 6 be supported to ensure the stability of the bar 6 during cutting, but also the rolling support balls 861 will not generate excessive friction on the surface of the bar 6, whether the bar 6 moves axially or rotates. Therefore, when playing a supporting role, the support balls 861 reduce the reaction force on the motor 3 and the linear module 2 compared with ordinary support devices. Even within the same batch of bars 6 produced, the shapes of bars 6 may vary slightly. By setting support balls 861 fixed to the side of slider 81, slider 81 is slidably mounted on the side of ring frame 8. A micro-elastic element is provided on the side of slider 81 relative to support balls 861. Therefore, multiple support balls 861 distributed circumferentially will move upward by a corresponding distance according to the specific shape of bar 6. The support balls 861 then drive slider 81 to slide relative to ring frame 8, and compress the corresponding disc spring group 83 and hydraulic rod 85 to different degrees. Since a cutting blade 92 is fixedly provided on one side of slider 81, slider 81 will also drive the cutting blade 92 to adjust its height according to the shape of bar 6. When bar 6 rotates, moves and begins to contact cutting blade 92, cutting blade 92 will cut its surface according to the specific shape of bar 6, thereby ensuring the uniformity of the cutting thickness. Some bars 6 often have uneven hardness and local protrusions such as rolling defects on their surface. By setting a support ball 861 in front, when the local protrusion is large, the support ball 861 will drive the cutting tool 92 to be slightly raised in advance through the slider 81, thereby reducing the instantaneous impact of the local protrusion on the cutting tool 92. In addition, even if the local protrusion is small, when the protrusion generates an instantaneous and severe impact load on the cutting tool 92 due to the high-speed rotation of the bar 6, the flexible fine-tuning design of the disc spring assembly 83 and the hydraulic rod 85 can quickly respond to and absorb the radial impact caused by the local unevenness of the bar 6 surface, greatly reducing the risk of the cutting tool 92 chipping and extending the life of the cutting tool 92. In addition, by unscrewing the bolt 931 and then sliding the sliding block 9 outward to the outermost side of the groove 812, it can be released from the limit plate 813, thereby removing the sliding block 9 and allowing the cutting tool 92 to be released from the slider 81. This makes it easier to replace different models of cutting tools 92, adapt to different cutting requirements, and has greater versatility.
[0028] To ensure stable operation in high-temperature environments, the internal cooling channels of the ring frame 8 and mounting frame 7 adopt a spiral tube structure with a pitch of 10mm-25mm. Under the synergistic effect of extrusion thrust, the heat exchange efficiency is increased by 40%-60%, and the continuous operation life of the device is extended by more than 50%, effectively mitigating the adverse effects of thermal expansion and contraction on cutting accuracy and tool life.
[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A surface cutting device for hot-rolled steel, comprising a cutting table (1), characterized in that: A linear module (2) is embedded in the top of the cutting table (1). A slide (21) is fixedly installed at the output end of the linear module (2). A motor (3) is fixedly installed on the top of the slide (21). A clamping member is fixedly connected to the output end of the motor (3). The clamping member holds a rod (6). A mounting frame (7) is fixedly installed on the top of the cutting table (1). A ring frame (8) is fixedly installed on the mounting frame (7). Multiple sliders (81) are slidably installed on one side of the ring frame (8). The multiple sliders (81) are circumferentially distributed around the hollow of the ring frame (8). Each slider (81) has a mounting cover (86) fixedly installed on one side near the axis. The mounting cover (86) has a support ball (861) rollingly connected inside. The end of the rod (6) away from the motor (3) passes through the hollow of the ring frame (8) and contacts multiple support balls (861). Each slider (81) has a cutting tool (92) fixedly installed on one side away from the ring frame (8) for cutting the surface of the rod (6). Each slider (81) has a micro-elastic element fixedly installed on one side away from the support ball (861) for absorbing the impact load of the rod (6) on the cutting tool (92) at a certain moment.
2. The surface cutting device for hot-rolled steel according to claim 1, characterized in that: The micro-elastic component includes a mounting plate (82), which is fixedly disposed on one side of the ring frame (8). A slide rod (84) is fixedly connected to the side of the mounting plate (82) near the slider (81). A disc spring assembly (83) is movably sleeved on the outside of the slide rod (84). A cavity (811) is provided inside the slider (81), and the movable end of the slide rod (84) is slidably sleeved inside the cavity (811).
3. The surface cutting device for hot-rolled steel according to claim 2, characterized in that: The micro-elastic component also includes a hydraulic rod (85), which is fixedly installed on one side of the ring frame (8). The output end of the hydraulic rod (85) is fixedly connected to the slider (81). The hydraulic rod (85) is used to provide follow-up extrusion thrust in the hot rolling high temperature thermal expansion and contraction environment and absorb instantaneous impact load on the surface of the bar.
4. The surface cutting device for hot-rolled steel according to claim 3, characterized in that: The slider (81) has a groove (812) on one side away from the ring frame (8). A sliding block (9) is slidably sleeved inside the groove (812). A connecting plate (91) is fixedly connected to the outer side of the sliding block (9). The outer end of the connecting plate (91) extends movably to the outside of the groove (812) and is fixedly installed with a cutting blade (92).
5. The surface cutting device for hot-rolled steel according to claim 4, characterized in that: The side of the connecting plate (91) is fixedly connected to a limiting piece (93), and a bolt (931) is installed through the limiting piece (93). The limiting piece (93) is pressed and fixed to the surface of the slider (81) by the bolt (931).
6. The surface cutting device for hot-rolled steel according to claim 5, characterized in that: The inner wall of the cavity (811) is fixedly provided with a limiting plate (813) for restricting the sliding block (9) from disengaging. The size of the space formed by the end of the limiting plate (813) and the end of the groove (812) is adapted to the size of the sliding block (9).
7. The surface cutting device for hot-rolled steel according to claim 6, characterized in that: The clamping component includes a flange (4) and a three-jaw chuck (5). The three-jaw chuck (5) clamps one end of the bar (6). The side of the three-jaw chuck (5) away from the bar (6) is fixedly connected to the output end of the motor (3) through the flange (4).
8. A surface cutting method for hot-rolled steel, applied to the surface cutting apparatus for hot-rolled steel according to any one of claims 1-7, characterized in that, The surface cutting method for hot-rolled steel includes the following steps: S1. Preparation: Unscrew the bolt (931) to loosen the limit plate (93) relative to the slider (81). Adjust the distance inward of the cutting tool (92) relative to the support ball (861) according to the actual cutting depth. The extension distance range is 1mm-10mm. After adjustment, tighten the bolt (931) again to fix the cutting tool (92). Then adjust the three-jaw chuck (5) so that its clamping end clamps one end of the bar (6). S2, Starting device: Start motor (3) drives the bar (6) to rotate, and start linear module (2) drives the bar (6) to move slowly and uniformly towards the side close to the ring frame (8). After one end of the bar (6) passes through the center of the ring frame (8), it first contacts multiple support balls (861) distributed in a circle. Multiple support balls (861) can support the other end of the bar (6) to ensure the stability of the bar (6) during cutting. When the bar (6) moves, it will drive the support balls (861) to roll, thus reducing the friction generated when the support balls (861) support the bar (6), thereby reducing the reaction force on the motor (3) and linear module (2), thereby reducing the energy consumption of the motor (3) and linear module (2). S3, Cutting blade (92) elastic self-adjustment: By setting micro elastic elements, multiple circumferentially distributed support balls (861) can move up a corresponding distance according to the specific shape of the bar (6). The support balls (861) then drive the slider (81) to slide relative to the ring frame (8). The slider (81) will then drive the cutting blade (92) to adjust its height according to the shape of the bar (6). When the bar (6) rotates, moves and begins to contact the cutting blade (92), the cutting blade (92) will cut the surface of the bar (6) according to the specific shape of the bar (6), thereby ensuring the uniformity of the cutting thickness. S4. Micro-elastic components absorb instantaneous impact load: When the surface of the bar (6) has uneven hardness or local protrusions, the high-speed rotation of the bar (6) will generate instantaneous and severe impact load on the cutting tool (92). When the cutting tool (92) is subjected to impact load, it will drive the slider (81) to slide relative to the ring frame (8) and squeeze the disc spring assembly (83) and hydraulic rod (85). The disc spring assembly (83) and hydraulic rod (85) absorb the impact force through their own elasticity, thereby reducing the risk of the cutting tool (92) chipping and extending the life of the cutting tool (92). S5. Change the model of the cutting tool (92): Unscrew the bolt (931), and then move the sliding block (9) to the outermost side of the slide groove (812) so that it can be released from the limit plate (813) and the sliding block (9) can be removed so that the cutting tool (92) can be released from the slider (81) and replaced with a different model of cutting tool (92) to meet the requirements of different cutting amounts.