A deburring machine for round blanks and working method thereof

Abstract

The present invention relates to the field of continuous casting production technology, and in particular to a deburring machine for round billets and a working method thereof, comprising a left arc-shaped toothed cutter and a right arc-shaped toothed cutter, which are installed one after the other in the direction of motion of the billet, and are located as a whole in the middle of a roller bed, and are respectively fixedly connected to the free ends of the piston rods of reciprocating hydraulic cylinders, and the reciprocating hydraulic cylinders are fixed on a cutter seat. When the piston rods of the reciprocating hydraulic cylinders are fully extended, the left arc-shaped toothed cutter and the right arc-shaped toothed cutter form a central circular processing hole in front and behind, and the scraping generated during the retraction process of the billet is utilized to achieve the effect of burr removal. The present invention can ensure the roundness of the circular billet while removing burrs, will not damage the shape of the billet, and ensure the quality of the billet. The advantages of reciprocating scraping over high-speed rotary striking by a hammer knife are safety, no splashing of iron cuttings, low noise, and 360° complete deburring.

Description

Technical Field

[0001] The invention relates to the technical field of continuous casting production, in particular to a deburring machine for round billets and a working method thereof. Background Art

[0002] The existing round billet continuous casting machine uses flame cutting to cut the continuous casting billet into fixed lengths. Flame cutting will inevitably form slag burrs at the bottom of the cut. This burr is hard and will cause product quality problems when sent to the hot rolling process. In serious cases, it will damage the rollers. In order to improve product quality and reduce the impact of the billet cutting burr on the hot rolling process. At present, the round billet burr machine is a hammer knife type, which achieves the purpose of deburring by high-speed rotating hammer knife. However, in actual use, after flame cutting, the round billet rotates on the roller table, and the deburring rate cannot reach 100%. The burrs that have not been removed still need to be manually cleaned and removed. Summary of the invention

[0003] In order to solve the above technical problems, the present invention discloses a deburring machine for round blanks and a working method thereof.

[0004] The specific technical solutions are as follows:

[0005] A deburring machine for round billets, the deburring machine comprising a left arc-shaped toothed cutter and a right arc-shaped toothed cutter, the left arc-shaped toothed cutter and the right arc-shaped toothed cutter are installed one after the other in the direction of the billet travel, and are located as a whole in the middle of the roller bed, and are respectively fixedly connected to the free ends of the piston rods of the reciprocating hydraulic oil cylinders, and the reciprocating hydraulic oil cylinders are fixed on the cutter seat. When the piston rods of the reciprocating hydraulic oil cylinders are fully extended, the left arc-shaped toothed cutter and the right arc-shaped toothed cutter form a central perfect circle processing hole in front and behind, and the upper and lower parts overlap, so that the parts where burrs are concentrated can be cleaned for a second time; the cutting surfaces inside the left arc-shaped toothed cutter and the right arc-shaped toothed cutter are respectively processed into a left superior arc and a right inferior arc. The left and right major arcs processed by the left arc-shaped tooth cutter and the right arc-shaped tooth cutter have a central angle of 270°. The left and right major arcs are processed into teeth, and the contact area with the ingot is very small. Power rollers are installed on both sides of the roller bed, and a guide roller is installed on both sides of the front end of the roller bed. The power roller is controlled by a forward and reverse motor, and the guide roller is controlled by a reciprocating hydraulic cylinder. A pair of sensors are installed on both sides of the roller bed between the guide roller and the deburring machine. The sensors feed back signals to the computer, and the computer controls the speed and direction of the forward and reverse motors, the reciprocating hydraulic cylinder of the deburring machine, and the extension and retraction of the piston rod of the reciprocating hydraulic cylinder of the guide roller.

[0006] The center angles of the left major arc and the right major arc processed by the left arc-shaped tooth cutter and the right arc-shaped tooth cutter are 270°.

[0007] The sensors are a pair. When the billet does not move between the two sensors, the two sensor signals are emitted to each other, and no signal is fed back to the computer. When the billet moves between the two sensors, the two sensor signals are blocked by the billet, and a signal is fed back to the computer. The computer controls the forward and reverse motors to rotate counterclockwise, controls the piston rod of the guide roller reciprocating hydraulic cylinder to extend to squeeze, slow down and retract the billet, and controls the piston rod of the reciprocating hydraulic cylinder of the deburring machine to extend to place the left arc-shaped toothed cutter and the right arc-shaped toothed cutter in the cutting position.

[0008] The left arc-shaped toothed cutter and the right arc-shaped toothed cutter can be connected to a water cooling structure to achieve cooling of the toothed cutters.

[0009] A working method of a deburring machine for round blanks, specifically comprising the following steps:

[0010] (1) In the initial state, the billet has not yet moved between the two sensors, and the two sensors emit signals to each other, but no signal is fed back to the computer. At this time, the piston rods of the reciprocating hydraulic cylinders of the deburring machine and the guide roller are in a retracted state, and the power roller rotates clockwise, driving the billet to gradually move forward;

[0011] (2) The billet continues to move forward and passes through the deburring machine;

[0012] (3) When the billet moves between the two sensors, the signals of the two sensors are blocked by the billet, and the signals are fed back to the computer. The computer controls the forward and reverse motors to rotate counterclockwise, and controls the piston rod of the reciprocating hydraulic cylinder of the guide roller to extend to squeeze, decelerate and retract the billet. The guide roller positions the billet at this time to ensure that the round billet can be centered and enter the deburring machine to complete deburring when it retracts; at the same time, the piston rod of the reciprocating hydraulic cylinder of the deburring machine is controlled to extend to place the left arc tooth cutter and the right arc tooth cutter in the cutting position;

[0013] (4) When the piston rods of the reciprocating hydraulic cylinders of the left arc-shaped toothed cutter and the right arc-shaped toothed cutter are fully extended, the left arc-shaped toothed cutter and the right arc-shaped toothed cutter form a central circular processing hole in the front and back. When the billet moves back longitudinally, the burrs are removed by scraping in the reverse direction during the billet retreat process.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] (1) The present invention includes a left arc-shaped toothed cutter and a right arc-shaped toothed cutter that can move perpendicular to the direction of motion of the billet. The cutting surfaces inside the left arc-shaped toothed cutter and the right arc-shaped toothed cutter are respectively processed into the left superior arc and the right superior arc. The left superior arc and the right superior arc are processed into cutter teeth. When the piston rod of the reciprocating hydraulic cylinder is fully extended, the left arc-shaped toothed cutter and the right arc-shaped toothed cutter form a central circular processing hole in front and behind. When the billet moves longitudinally, the scraping generated during the billet retreat process is utilized to achieve the effect of burr removal. While removing the burrs, the roundness of the circular billet can be ensured, the billet shape will not be damaged, and the billet quality can be ensured. The advantages of reciprocating scraping over high-speed rotary striking by a hammer knife are safety, no splashing of iron cuttings, low noise, and 360° deburring.

[0016] (2) The roller bed of the present invention is equipped with power rollers on both sides, and a guide roller is installed on both sides of the front end of the roller bed. The guide rollers are controlled by a reciprocating hydraulic cylinder. A pair of sensors are installed on both sides of the roller bed between the guide rollers and the deburring machine. The sensors feed back signals to the computer. The computer controls the piston rod extension and retraction of the reciprocating hydraulic cylinder of the guide rollers. The positioning is performed through the guide wheel to ensure that the round billet can be centered and enter the deburring machine to complete the deburring when it retreats. The roller bed of the present invention is equipped with power rollers on both sides. The power rollers are controlled by forward and reverse motors. The computer controls the speed and direction of the forward and reverse motors to achieve the longitudinal reciprocating movement of the billet.

[0017] (3) The left arc-shaped toothed cutter and the right arc-shaped toothed cutter of the present invention can be connected to a water cooling structure to achieve cooling of the toothed cutters, thereby adapting to long-term operation under high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the burr position after round billet flame cutting;

[0019] Figure 2 A top view of the deburring machine of the present invention;

[0020] Figure 3 It is a cross-sectional schematic diagram of the right arc-shaped toothed cutter and the left arc-shaped toothed cutter A of the deburring machine of the present invention;

[0021] Figure 4 A schematic cross-sectional view of a deburring machine A of the present invention;

[0022] Figure 5 This is a schematic diagram of the initial working state of the deburring machine of the present invention;

[0023] Figure 6 It is a schematic diagram of the working feeding state of the deburring machine of the present invention;

[0024] Figure 7 This is a schematic diagram of the deburring machine of the present invention in a deceleration state;

[0025] Figure 8 This is a schematic diagram of the deburring machine of the present invention in a working retraction state;

[0026] Fig. 9 It is a schematic diagram of the deburring machine of the present invention in the working and cutting state.

[0027] In the figure, 1 is a guide roller; 2 is a power roller; 3 is a casting blank; 4 is a sensor; 5 is a reciprocating hydraulic cylinder; 6 is a piston rod; 7 is a right arc-shaped toothed cutter; 8 is a left arc-shaped toothed cutter; 9 is a cutter holder; 10 is a cutter tooth; 11 is a burr. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the accompanying drawings.

[0029] The reciprocating hydraulic cylinder used in the present invention is a Qiangfeng Hydraulic YG003 reciprocating hydraulic cylinder, and the motor is a LSD / Leshidun 5IK90RGU-CF forward and reverse motor produced by Dongguan Leshidun Electromechanical Technology Co., Ltd.

[0030] Figure 1 Schematic diagram of the position of burrs after flame cutting of round billets. As shown in the figure, the round billet continuous casting machine uses flame cutting to cut the round billet 3 into fixed lengths. Flame cutting will inevitably form slag burrs 11 at the lower part of the cut.

[0031] Figure 2 It is a top view of the deburring machine of the present invention, Figure 3 This is a schematic cross-sectional view of the right arc-shaped toothed cutter and the left arc-shaped toothed cutter A of the deburring machine of the present invention. Figure 4 This is a cross-sectional schematic diagram of the deburring machine A of the present invention, as shown in the figure:

[0032] The present invention is used for a deburring machine for round billets, the deburring machine comprises a left arc-shaped toothed cutter 8 and a right arc-shaped toothed cutter 7, the left arc-shaped toothed cutter 8 and the right arc-shaped toothed cutter 7 are installed one after the other in the direction of travel of the billet 3, and are located as a whole in the middle of the roller bed, and are respectively fixedly connected to the free ends of the piston rod 6 of the reciprocating hydraulic oil cylinder 5, and the reciprocating hydraulic oil cylinder 5 is fixed on the cutter seat 9. When the piston rod 6 of the reciprocating hydraulic oil cylinder 5 is fully extended, the left arc-shaped toothed cutter 8 and the right arc-shaped toothed cutter 7 form a central perfect circular processing hole in front and behind, and the upper and lower parts overlap, so that the part where the burrs are concentrated can be cleaned twice; the left arc-shaped toothed cutter 8 and the right arc-shaped toothed cutter 7 are arranged in a circular shape ... left arc-shaped toothed cutter 8 and the right arc-shaped toothed cutter 7 are arranged in a circular shape, and the upper and lower parts overlap, so that the left arc-shaped toothed cutter 8 and the right arc-shaped toothed cutter 7 are arranged in a circular shape, and the upper and lower The cutting surfaces inside the knife 8 and the right arc-shaped tooth knife 7 are respectively processed into the left major arc and the right major arc, and the left major arc and the right major arc are processed into knife teeth 10; power rollers 2 are installed on both sides of the roller bed, and a guide roller 1 is installed on both sides of the front end of the roller bed. The power roller 2 is controlled by a forward and reverse motor, and the guide roller 1 is controlled by a reciprocating hydraulic cylinder. A pair of sensors 4 are installed on both sides of the roller bed between the guide roller 1 and the deburring machine. The sensors feed back signals to the computer, and the computer controls the speed and direction of the forward and reverse motors, the reciprocating hydraulic cylinder 5 of the deburring machine, and the extension and retraction of the piston rod of the reciprocating hydraulic cylinder of the guide roller 1.

[0033] The central angles of the left major arc and the right major arc processed by the left arc-shaped tooth cutter 8 and the right arc-shaped tooth cutter 7 are 270°.

[0034] The sensors 4 are a pair. When the billet 3 does not move between the two sensors 4, the signals of the two sensors 4 are opposite to each other, and no signal is fed back to the computer. When the billet 3 moves between the two sensors 4, the signals of the two sensors 4 are blocked by the billet, and the signal is fed back to the computer. The computer controls the forward and reverse motors to rotate counterclockwise, controls the piston rod of the reciprocating hydraulic cylinder of the guide roller 1 to extend to squeeze, decelerate and return the billet 3, and controls the piston rod of the reciprocating hydraulic cylinder 5 of the deburring machine to extend to place the left arc-shaped toothed cutter 8 and the right arc-shaped toothed cutter 7 in the cutting position. The left arc-shaped toothed cutter and the right arc-shaped toothed cutter can be connected to a water cooling structure to cool the toothed cutter.

[0035] During operation, in the initial state, the billet 3 has not yet moved between the two sensors 4, and the signals of the two sensors 4 are emitted to each other, but no signal is fed back to the computer. At this time, the piston rods of the reciprocating hydraulic cylinders 5 of the deburring machine and the guide roller 1 are in a retracted state, and the power roller 2 rotates clockwise, driving the billet 3 to gradually move forward. Figure 5 The deburring machine is shown in the schematic diagram of the initial working state. The billet 3 continues to move forward and passes through the deburring machine. Figure 6 The schematic diagram of the deburring machine's working feeding state is shown in the figure.

[0036] When the billet 3 moves between the two sensors 4, the signals of the two sensors 4 are blocked by the billet, and the signals are fed back to the computer. The computer controls the forward and reverse motors to rotate counterclockwise, and controls the piston rod of the reciprocating hydraulic cylinder of the guide roller 1 to extend to squeeze, decelerate and retract the billet 3. At this time, the guide roller 1 positions the billet 3 to ensure that the round billet can be centered and enter the deburring machine to complete deburring when it retracts. Figure 7 The deburring machine is shown in the schematic diagram of the deburring machine working deceleration state. At the same time, the piston rod of the reciprocating hydraulic oil cylinder 5 of the deburring machine is controlled to extend, so that the left arc toothed knife 8 and the right arc toothed knife 7 are placed in the cutting position, as shown in FIG. Figure 8 The deburring machine is shown in the schematic diagram of the working retraction state.

[0037] When the piston rods of the reciprocating hydraulic cylinders of the left arc-shaped toothed cutter 8 and the right arc-shaped toothed cutter 7 are fully extended, the left arc-shaped toothed cutter and the right arc-shaped toothed cutter form a central circular processing hole in front and behind. When the billet 3 moves back longitudinally, the billet 3 is scraped outward in the reverse direction during the backing process to achieve the effect of removing the burr 11. While removing the burr, the roundness of the round billet can be ensured without damaging the billet shape, thereby ensuring the billet quality. Fig. 9 The deburring machine working and cutting state is shown in the schematic diagram.

Claims

1. A deburring machine for round billets, characterized in that: The deburring machine comprises a left arc-shaped toothed cutter and a right arc-shaped toothed cutter, which are installed one after the other in the direction of the ingot's movement, and are located as a whole in the middle of the roller bed, and are respectively fixedly connected to the free ends of the piston rods of the reciprocating hydraulic cylinders, and the reciprocating hydraulic cylinders are fixed on the cutter seat. When the piston rods of the reciprocating hydraulic cylinders are fully extended, the left arc-shaped toothed cutter and the right arc-shaped toothed cutter form a central circular processing hole in front and behind, and the upper and lower parts overlap, so that the parts where burrs are concentrated can be cleaned for a second time; the left arc-shaped toothed cutter and the right arc-shaped toothed cutter The internal cutting surface is processed into a left-side major arc and a right-side major arc respectively, and the left-side major arc and the right-side major arc are processed into cutter teeth; power rollers are installed on both sides of the roller bed, and a guide roller is installed on both sides of the front end of the roller bed. The power roller is controlled by a forward and reverse motor, and the guide roller is controlled by a reciprocating hydraulic cylinder. A pair of sensors are installed on both sides of the roller bed between the guide roller and the deburring machine. The sensors feed back signals to the computer, and the computer controls the speed and direction of the forward and reverse motors, the reciprocating hydraulic cylinder of the deburring machine, and the extension and retraction of the piston rod of the reciprocating hydraulic cylinder of the guide roller.

2. The deburring machine for round billets according to claim 1, characterized in that: The center angles of the left major arc and the right major arc processed by the left arc-shaped tooth cutter and the right arc-shaped tooth cutter are 270°.

3. The deburring machine for round billets according to claim 1, characterized in that: The sensors are a pair. When the billet does not move between the two sensors, the two sensor signals are emitted to each other, and no signal is fed back to the computer. When the billet moves between the two sensors, the two sensor signals are blocked by the billet, and a signal is fed back to the computer. The computer controls the forward and reverse motors to rotate counterclockwise, controls the piston rod of the guide roller reciprocating hydraulic cylinder to extend to squeeze, slow down and retract the billet, and controls the piston rod of the reciprocating hydraulic cylinder of the deburring machine to extend to place the left arc-shaped toothed cutter and the right arc-shaped toothed cutter in the cutting position.

4. The deburring machine for round billets according to claim 1, characterized in that: The left arc-shaped toothed cutter and the right arc-shaped toothed cutter can be connected to a water cooling structure to achieve cooling of the toothed cutters.

5. A method for operating a deburring machine for round blanks according to claim 1, characterized in that: Specifically, it includes the following steps: (1) In the initial state, the billet has not yet moved between the two sensors, and the signals of the two sensors are emitted to each other, and no signal is fed back to the computer. At this time, the piston rods of the reciprocating hydraulic cylinders of the deburring machine and the guide roller are in a retracted state, and the power roller rotates clockwise, driving the billet to gradually move forward; (2) The billet continues to move forward and passes through the deburring machine; (3) When the billet moves between the two sensors, the emitted signals of the two sensors are blocked by the billet, and a signal is fed back to the computer. The computer controls the forward and reverse motors to rotate counterclockwise in the opposite direction, and controls the piston rod of the reciprocating hydraulic cylinder of the guide roller to extend to squeeze, decelerate and retract the billet. At this time, the guide roller positions the billet to ensure that the round billet can be centered and enter the deburring machine to complete deburring when it retracts; at the same time, the piston rod of the reciprocating hydraulic cylinder of the deburring machine is controlled to extend, so that the left arc tooth knife and the right arc tooth knife are placed in the cutting position; (4) When the piston rods of the reciprocating hydraulic cylinders of the left arc-shaped toothed cutter and the right arc-shaped toothed cutter are fully extended, the left arc-shaped toothed cutter and the right arc-shaped toothed cutter form a central circular processing hole in the front and back. When the billet moves back longitudinally, the burrs are removed by scraping in the reverse direction during the billet retreat process.

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