Irregular blank radial dynamic follow-up descaling system and descaling method

Abstract

The invention discloses a radial dynamic follow-up descaling system and method for irregular blanks. The radial dynamic follow-up descaling system comprises a rotating platform and a side descaling mechanism. The device further comprises a distance sensor, a rotary encoder, a sliding box body, a driving mechanism and a control unit. The rotary encoder is arranged on the rotary platform; the distance sensor is arranged on one side of the rotating platform and used for measuring the rotating radius of each point of the blank; the descaling collecting pipe is vertically arranged on the sliding box body, the sliding box body is arranged on one side of the rotating platform in the radial direction of the rotating platform, and the driving mechanism is connected with the sliding box body; the rotary encoder, the distance sensor and the driving mechanism are all connected with the control unit, so that the angular velocity and the rotation radius of the rotary platform are conveniently transmitted to the control unit and are kept in one-to-one correspondence, and the control unit controls the driving mechanism to drive the descaling header to horizontally move. The descaling nozzle is dynamically changed along with the radial direction of the irregular blank, so that the distance from the descaling nozzle to the surface of the blank is kept unchanged all the time, and the descaling effect can be effectively guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgical engineering, relates to descaling of irregular blanks, and particularly relates to a radial dynamic follow-up descaling system and a descaling method for irregular blanks. Background Art

[0002] When metal materials are subjected to thermoplastic forming such as forging, they are often heated and kept warm at 1100-1300℃. Under such heating conditions, a dense oxide scale will form on the surface of the blank. If the oxide scale is not cleaned off during die forging and is pressed into the blank, pitting and concave pits will appear on the surface of the blank after cleaning, resulting in the final blank failing to meet the requirements in terms of precision and roughness, and increasing the difficulty of subsequent machining. If the oxide scale is pressed into the interior of the parts in the blank, the blank will become scrap. In addition, the oxide scale has a high hardness, which not only increases the consumption of deformation energy during forging, but also accelerates the wear of the forging die and reduces the service life of the forging die.

[0003] At present, the billet is usually descaled by setting descaling mechanisms at the top and bottom of the descaling box to descale the upper and lower end surfaces of the forging, and setting a side descaling mechanism on the side of the descaling box. The billet is placed on a rotating platform set at the bottom center of the descaling box, and the billet is driven to rotate by the rotating platform, so as to descale the side of the billet, such as a descaling machine for forgings disclosed in Chinese Patent 202222559821.1. However, for irregular billets, the radial length from the outer surface of the billet to the center of the billet is inconsistent along the outer circumference of the billet. When using the above-mentioned descaling machine, the distance from the nozzle to the outer surface of the billet is sometimes large and sometimes small, and the descaling effect cannot be guaranteed. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a radial dynamic follow-up descaling system and descaling method for irregular blanks. The descaling nozzle of the present invention changes dynamically with the radial direction of the irregular blank, so that the distance from the descaling nozzle to the surface of the blank remains unchanged, thereby effectively ensuring the descaling effect.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A radial dynamic follow-up descaling system for irregular blanks comprises a rotating platform and a side descaling mechanism, wherein the rotating platform is used to place the blanks and drive the blanks to rotate, and the side descaling mechanism comprises a vertically arranged descaling manifold and a plurality of nozzles arranged on the descaling manifold, and all the nozzles are offset by a certain angle in the opposite direction of the blank rotation direction; the descaling manifold is connected to the high-pressure pipeline through a high-pressure hose to introduce high-pressure water.

[0007] It also includes a distance sensor, a rotary encoder, a sliding box, a driving mechanism and a control unit; the rotary encoder is arranged on a rotating platform and is used to measure the angular velocity of the rotating platform; the distance sensor is arranged on one side of the rotating platform and is used to obtain the distance from the distance sensor to the center of the blank and measure the distance of each point on the outer circumferential surface of the blank, so as to obtain the rotation radius of each point on the outer circumferential surface of the blank.

[0008] The descaling manifold is arranged on a sliding box through a plurality of connecting pieces. The sliding box is arranged radially on one side of the rotating platform. The driving mechanism is connected to the sliding box to drive the sliding box to drive the descaling manifold to move horizontally.

[0009] The rotary encoder, distance sensor and driving mechanism are all connected to the control unit, so that the angular velocity and rotation radius of the rotating platform are transmitted to the control unit and maintained in one-to-one correspondence, thereby controlling the driving mechanism through the control unit to drive the descaling manifold to move horizontally, so that the distance between the descaling manifold and the outer surface of the blank remains unchanged.

[0010] Furthermore, the high-pressure hose includes a first high-pressure hose and a second high-pressure hose, the first high-pressure hose is arranged on a hose bracket, the second high-pressure hose is arranged on a sliding box body, the first high-pressure hose and the second high-pressure hose are connected through a water inlet seat arranged on the sliding box body, one end of the first high-pressure hose is connected to the high-pressure pipeline, and the other end is connected to the water inlet seat, one end of the second high-pressure hose is connected to the water inlet seat, and the other end is connected to the descaling collecting pipe.

[0011] A slide rail is provided at the bottom of the sliding box to facilitate the horizontal movement of the sliding box along the slide rail. At the same time, the hose bracket is connected to the sliding box at one end close to the sliding box, and a roller is provided at the bottom of the end away from the sliding box to facilitate the horizontal movement of the hose bracket with the sliding box.

[0012] Furthermore, the driving mechanism is a hydraulic cylinder or a servo motor.

[0013] A method for radial dynamic follow-up descaling of irregular blanks, using the above-mentioned radial dynamic follow-up descaling system for irregular blanks to perform descaling, specifically comprising the following steps:

[0014] S1: Place the blank vertically on the rotating platform so that the axial center of the blank coincides with the rotation center of the rotating platform;

[0015] S2: Use a distance sensor to obtain the distance L from the distance sensor to the center of the blank, evenly select several control points on the outer surface of the blank, rotate the rotating platform for one circle, and use the distance sensor to obtain the distance L from the distance sensor to each control point on the outer surface of the blank i , where i is 0, 1, 2, 3, etc., so as to obtain the rotation radius R of each control point on the outer surface of the blank i, where R i =LL i ; At the same time, the rotation angle of the rotating platform is matched to the rotation radius of all control points one by one;

[0016] S3: Rotate the rotating platform so that the control point corresponding to the maximum or minimum rotation radius of the outer surface of the blank is located on the straight line between the nozzle and the rotating platform as the injection starting point, and assign the rotation radius corresponding to the control point to R0, and the rotation platform angle to 0°. The rotation radius and rotation platform angle corresponding to other control points are adjusted in sequence along the injection sequence;

[0017] S4: According to the rotation radius difference R between the next control point and the previous control point n -R n-1 And the rotating platform speed controls the horizontal movement speed of the driving mechanism until the rotating platform rotates one circle to complete the descaling.

[0018] Furthermore, the error between the axial center of the blank and the rotation center of the rotating platform is ≤50 mm.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The axis line of the descaling manifold of the present invention is arranged parallel to the rotation center of the blank. When the blank rotates, the descaling manifold can move horizontally according to the outer surface of the blank under the action of the driving mechanism, so that the descaling nozzle changes dynamically with the radial direction of the irregular blank, and the distance between the descaling nozzle and the outer surface of the blank is always maintained unchanged, so that the impact force of the high-pressure water sprayed from the nozzle on the surface of the blank is always consistent, thereby ensuring the descaling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 -Schematic diagram of the structure of the descaling system of the present invention.

[0022] Figure 2 - A top view of the descaling system according to the invention.

[0023] Figure 3 -Top view of the blank.

[0024] Figure 4 -The variation curve of the blank rotation radius from 0 to 360°.

[0025] Among them: 1-rotating platform; 2-blank; 3-descaling manifold; 4-connecting pin; 5-second high-pressure hose; 6-sliding box; 7-water inlet seat; 8-first high-pressure hose; 9-hose bracket; 10-hydraulic cylinder; 11-hydraulic cylinder seat; 12-first anchor bolt; 13-second anchor bolt; 14-slide rail; 15-annular drain ditch; 16-distance sensor. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] See also Figure 1 and Figure 2 A radial dynamic follow-up descaling system for irregular blanks includes a rotating platform 1 and a side descaling mechanism. The rotating platform 1 is used to place a blank 2 and drive the blank 2 to rotate. The side descaling mechanism includes a vertically arranged descaling manifold 3 and a plurality of nozzles arranged on the descaling manifold 3. All nozzles are offset by a certain angle in the opposite direction of the blank rotation direction; the descaling manifold 3 is connected to the high-pressure pipeline through a high-pressure hose to introduce high-pressure water.

[0028] It also includes a distance sensor 16, a rotary encoder (not shown in the figure), a sliding box 6, a driving mechanism and a control unit; the rotary encoder is arranged on the rotating platform 1, and is used to measure the angular velocity of the rotating platform; the distance sensor 16 is arranged on one side of the rotating platform, and is used to obtain the distance from the distance sensor 16 to the center of the blank 2 and measure the distance of each point on the outer circumferential surface of the blank 2, so as to obtain the rotation radius of each point on the outer circumferential surface of the blank 2.

[0029] The descaling manifold 4 is arranged on a sliding box 6 through a plurality of connecting pins 4. The sliding box 6 is arranged on one side of the rotating platform 1 radially along the rotating platform 1. The driving mechanism is connected to the sliding box 6 to drive the sliding box 6 to drive the descaling manifold 4 to move horizontally.

[0030] The rotary encoder, distance sensor 16 and driving mechanism are all connected to the control unit, so that the angular velocity and rotation radius of the rotating platform 1 are transmitted to the control unit and maintained in one-to-one correspondence, thereby controlling the driving mechanism through the control unit to drive the descaling manifold 3 to move horizontally, so that the distance between the descaling manifold 3 and the outer circumferential surface of the blank 2 always remains unchanged.

[0031] In this embodiment, the driving mechanism is a hydraulic cylinder 10, which is arranged on the foundation through a hydraulic cylinder seat 11, and the hydraulic cylinder seat is arranged on the foundation through a first anchor bolt. In practical applications, a servo motor or other device that can drive the sliding box to perform linear motion can also be selected as the driving mechanism. When used, an annular drainage ditch 15 is provided at the bottom of the rotating platform for draining the descaling water.

[0032] The rotating platform is driven by the motor. The rotary encoder is installed on the motor shaft to measure the motor speed. The motor transmits power through the gear pair to drive the rotating platform. If the transmission ratio of the motor and the gear pair is f, the motor speed is N 电 , then the speed of the rotating platform is N 旋 =N 电 f, so the rotating platform speed can be obtained through the rotary encoder.

[0033] In this way, the axis line of the descaling manifold is set parallel to the rotation center of the billet. When the billet rotates, the descaling nozzle changes dynamically with the radial direction of the irregular billet, ensuring that the distance between the descaling nozzle and the outer surface of the billet remains unchanged at all times, so that the impact force of the high-pressure water ejected from the nozzle on the billet surface is always consistent, ensuring the descaling effect.

[0034] In a specific implementation, the high-pressure hose includes a first high-pressure hose 8 and a second high-pressure hose 5. The first high-pressure hose 8 is supported on a hose bracket 9, and the second high-pressure hose 5 is arranged on a sliding box body 6. The first high-pressure hose 8 and the second high-pressure hose 5 are connected through a water inlet seat 7 arranged on the sliding box body 6. One end of the first high-pressure hose 8 is connected to the high-pressure pipeline, and the other end is connected to the water inlet seat 7. One end of the second high-pressure hose 5 is connected to the water inlet seat 7, and the other end is connected to the descaling collecting pipe 3.

[0035] A slide rail 14 is provided at the bottom of the sliding box 6 to facilitate the horizontal movement of the sliding box 6 along the slide rail 14. At the same time, the hose bracket 9 is connected to the sliding box 6 at one end close to the sliding box 6, and a roller is provided at the bottom of the end away from the sliding box 6 to facilitate the horizontal movement of the hose bracket 9 with the sliding box 6.

[0036] A method for radial dynamic follow-up descaling of irregular blanks, using the above-mentioned radial dynamic follow-up descaling system for irregular blanks to perform descaling, specifically comprising the following steps:

[0037] S1: Place the blank vertically on the rotating platform so that the axial center of the blank coincides with the rotation center of the rotating platform.

[0038] S2: Use a distance sensor to obtain the distance L from the distance sensor to the center of the blank, evenly select several control points on the outer surface of the blank, rotate the rotating platform for one circle, and use the distance sensor to obtain the distance L from the distance sensor to each control point on the outer surface of the blank n , where n is 0, 1, 2, 3, etc., so as to obtain the rotation radius R of each control point on the outer surface of the blank n , where R n =LL n ; At the same time, the rotation angle of the rotating platform is matched one by one with the rotation radius of all control points.

[0039] In step S2, control points can be set on the outer surface of the blank according to the accuracy requirements. All control points are evenly set along the circumferential direction, and the circumferential angle value between two adjacent control points is equal. The more control points are set, the higher the accuracy. Figure 3 As shown in the figure, 51 control points are taken on the blank, and the corresponding rotation radius is R0~R 50The circular angles of two adjacent control points differ by 7.2°. The rotation platform angle and rotation radius corresponding to each control point are as follows:

[0040]

[0041] At the same time, the curve of the rotation radius between 0 and 360 degrees is as follows Figure 4 shown.

[0042] S3: Rotate the rotating platform so that the control point corresponding to the maximum or minimum rotation radius of the outer surface of the blank is located on the straight line between the nozzle and the rotating platform as the injection starting point. At the same time, the rotation radius corresponding to the control point is assigned to R0, and the rotation platform angle is assigned to 0°. The rotation radii and rotation platform angles corresponding to other control points are adjusted in sequence along the injection order.

[0043] For example, in one embodiment, the first control point: 0° corresponds to a rotation radius of 450mm; the second control point: 45° corresponds to a rotation radius of 500mm; the third control point: 90° corresponds to a rotation radius of 420mm; the fourth control point: 135° corresponds to a rotation radius of 560mm; the fifth control point: 180° corresponds to a rotation radius of 600mm; the sixth control point: 225° corresponds to a rotation radius of 560mm; the seventh control point: 270° corresponds to a rotation radius of 480mm; the eighth control point: 315° corresponds to a rotation radius of 590mm; the ninth control point: 360° corresponds to a rotation radius of 450mm. The corresponding relationships are as follows:

[0044] Serial number 0 1 2 3 4 5 6 7 8 Angle / ° 0 45 90 135 180 225 270 315 360 Rn / mm 450 500 420 560 600 560 480 590 450

[0045] At this time, you can choose the third control point or the fifth control point as the injection starting point. When the third control point is the injection starting point, the rotation platform angle corresponding to the third control point is redefined as 0°, thus becoming the first control point: 0° corresponds to a rotation radius of 420mm; the second control point: 45° corresponds to a rotation radius of 560mm; the third control point: 90° corresponds to a rotation radius of 600mm; the fourth control point: 135° corresponds to a rotation radius of 560mm; the fifth control point: 180° corresponds to a rotation radius of 480mm; the sixth control point: 225° corresponds to a rotation radius of 590mm; the seventh control point: 270° corresponds to a rotation radius of 450mm; the eighth control point: 315° corresponds to a rotation radius of 500mm; the ninth control point: 360° corresponds to a rotation radius of 400mm. See the following table after reassignment:

[0046] Serial number 0 1 2 3 4 5 6 7 8 Angle / ° 0 45 90 135 180 225 270 315 360 Rn / mm 420 560 600 560 480 590 450 500 420

[0047] When the fifth control point is the starting point of injection, the rotation platform angle corresponding to the fifth control point is redefined as 0°, thus becoming the first control point: 0° corresponds to a rotation radius of 600mm; the second control point: 45° corresponds to a rotation radius of 560mm; the third control point: 90° corresponds to a rotation radius of 480mm; the fourth control point: 135° corresponds to a rotation radius of 590mm; the fifth control point: 180° corresponds to a rotation radius of 450mm; the sixth control point: 225° corresponds to a rotation radius of 500mm; the seventh control point: 270° corresponds to a rotation radius of 420mm; the eighth control point: 315° corresponds to a rotation radius of 560mm; the ninth control point: 360° corresponds to a rotation radius of 600mm. See the following table after reassignment:

[0048] Serial number 0 1 2 3 4 5 6 7 8 Angle / ° 0 45 90 135 180 225 270 315 360 Rn / mm 600 560 480 590 450 500 420 560 600

[0049] S4: According to the rotation radius difference R between the next control point and the previous control point n -R n-1 And the rotating platform speed controls the horizontal movement speed of the driving mechanism until the rotating platform rotates one circle to complete the descaling.

[0050] When R n -R n-1 When R is positive, the descaling manifold moves away from the rotating platform. n -R n-1 When it is a positive value, the descaling manifold moves toward the rotating platform.

[0051] In a specific implementation, the error between the axial center of the blank and the rotation center of the rotating platform is ≤50mm.

[0052] Finally, it should be noted that the above embodiments of the present invention are only examples for illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes and modifications can be made based on the above description. It is impossible to list all implementation methods here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A radial dynamic follow-up descaling system for irregular blanks, comprising a rotating platform and a side descaling mechanism, wherein the rotating platform is used to place the blanks and drive the blanks to rotate, and the side descaling mechanism comprises a vertically arranged descaling manifold and a plurality of nozzles arranged on the descaling manifold, and all the nozzles are offset by a certain angle in the opposite direction of the blank rotation direction; the descaling manifold is connected to a high-pressure pipeline through a high-pressure hose to introduce high-pressure water, and is characterized in that: It also includes a distance sensor, a rotary encoder, a sliding box, a driving mechanism and a control unit; the rotary encoder is arranged on the rotating platform and is used to measure the angular velocity of the rotating platform; The distance sensor is arranged on one side of the rotating platform, and is used to obtain the distance from the distance sensor to the center of the blank and to measure each point on the outer circumferential surface of the blank, so as to obtain the rotation radius of each point on the outer circumferential surface of the blank; The descaling manifold is arranged on a sliding box through a plurality of connecting pieces. The sliding box is arranged on one side of the rotating platform along the radial direction of the rotating platform. The driving mechanism is connected to the sliding box to drive the sliding box to drive the descaling manifold to move horizontally. The rotary encoder, distance sensor and driving mechanism are all connected to the control unit, so that the angular velocity and rotation radius of the rotating platform are transmitted to the control unit and maintained in one-to-one correspondence, thereby controlling the driving mechanism through the control unit to drive the descaling manifold to move horizontally, so that the distance between the descaling manifold and the outer surface of the blank remains unchanged.

2. The irregular blank radial dynamic follow-up descaling system according to claim 1, characterized in that: The high-pressure hose comprises a first high-pressure hose and a second high-pressure hose, wherein the first high-pressure hose is arranged on a hose bracket, and the second high-pressure hose is arranged on a sliding box body, and the first high-pressure hose and the second high-pressure hose are connected via a water inlet seat arranged on the sliding box body, wherein one end of the first high-pressure hose is connected to the high-pressure pipeline, and the other end is connected to the water inlet seat, and one end of the second high-pressure hose is connected to the water inlet seat, and the other end is connected to the descaling manifold; A slide rail is provided at the bottom of the sliding box to facilitate the horizontal movement of the sliding box along the slide rail. At the same time, the hose bracket is connected to the sliding box at one end close to the sliding box, and a roller is provided at the bottom of the end away from the sliding box to facilitate the horizontal movement of the hose bracket with the sliding box.

3. The irregular blank radial dynamic follow-up descaling system according to claim 1 or 2, characterized in that: The driving mechanism is a hydraulic cylinder or a servo motor.

4. A method for radial dynamic descaling of irregular blanks, characterized in that: Descaling is performed using an irregular blank radial dynamic follow-up descaling system as described in any one of claims 1 to 3, specifically comprising the following steps: S1: Place the blank vertically on the rotating platform so that the axial center of the blank coincides with the rotation center of the rotating platform; S2: Use distance sensor to obtain the distance from the distance sensor to the center of the blank L , evenly select several control points on the outer surface of the blank, rotate the rotating platform for one circle, and use the distance sensor to obtain the distance from the distance sensor to each control point on the outer surface of the blank L i ,in i Take 0, 1, 2, 3, etc. to get the rotation radius of each control point on the outer surface of the blank R i ,in R i =L- L i ; At the same time, the rotation angle of the rotating platform is matched to the rotation radius of all control points one by one; S3: Rotate the rotating platform so that the control point corresponding to the maximum or minimum rotation radius of the outer surface of the blank is located on the straight line between the nozzle and the rotating platform as the injection starting point, and assign the rotation radius corresponding to the control point to R 0 , the angle of the rotating platform is set to 0°, and the rotation radius and the angle of the rotating platform corresponding to other control points are adjusted in sequence along the injection sequence; S4: Based on the difference in rotation radius between the next control point and the previous control point R n - R n-1 And the rotating platform speed controls the horizontal movement speed of the driving mechanism until the rotating platform rotates one circle to complete the descaling.

5. The method for radial dynamic descaling of irregular blanks according to claim 4, characterized in that: The error between the axial center of the blank and the rotation center of the rotating platform is ≤50 mm.

Images