Laser tracking device for bearing induction heating integral quenching equipment

Abstract

The utility model belongs to the technical field of bearing induction heat treatment, and discloses a laser tracking device for bearing induction heating integral quenching equipment, which is characterized in that a mounting seat is arranged on a bracket upright post, and a laser distance sensor is arranged at the front end part of the mounting seat. The laser distance sensor continuously detects the change of the distance between the laser distance sensor and the to-be-inducted heating surface, and transmits a monitoring signal to the control system to control the heating inductor machine head to move in real time; the laser tracking device is compact and reasonable in structural design, continuously detects the change of the distance between the workpiece and the laser sensor, effectively tracks the thermal expansion change of the workpiece during induction heating of the whole workpiece, transmits a monitoring signal to a control system, controls a sensor machine head to move in real time, and improves the working efficiency. Therefore, the relative stability of the distance between the inductor and the workpiece in the heating process is kept, and the operation stability and the product heat treatment quality of the bearing induction heating integral quenching equipment are improved.

Description

Technical Field

[0001] This utility model belongs to the field of bearing induction heat treatment technology, specifically relating to a laser tracking device for bearing induction heating integral quenching equipment. Background Technology

[0002] With the booming development of the wind power industry, the non-soft strip quenching of main bearings of large-megawatt wind turbines has become a new trend. Traditional scanning induction heating quenching has low production efficiency. To address this, a workpiece rotation induction heating integral quenching equipment has been developed. Multiple large inductors simultaneously heat the surface of the workpiece, reducing the total heating time for processing the same workpiece by more than 70% compared to the traditional scanning heating time.

[0003] Traditional scanning heating equipment has a small heating coverage area, requiring immediate heating and quenching, resulting in minimal workpiece thermal expansion. However, this new type of integrated induction heating equipment heats the entire workpiece at high speed, continuously raising its temperature until the process temperature is reached and held for a certain time before quenching and cooling. Because the entire workpiece surface is heated simultaneously, thermal expansion is significant and continues to increase with rising temperature. The inductor needs to retract according to this expansion to prevent the workpiece from touching it due to excessive expansion, causing arcing and shutdown. Ensuring the inductor retraction distance matches the workpiece diameter and thermal expansion is crucial. If the inductor retracts too quickly, the effective heating distance between the inductor and workpiece surface cannot be guaranteed; if it retracts too slowly, the workpiece risks touching the inductor. Therefore, a bearing induction heating integrated quenching equipment with a reliable and efficient tracking and adjustment system is urgently needed. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a laser tracking device for an induction heating integral quenching equipment for bearings. By rationally setting a high-efficiency laser distance sensor, the device continuously detects the change in distance between the workpiece and the laser sensor during the induction heating process and transmits the monitoring signal to the control system. This control system moves the sensor head in real time, thereby maintaining a relatively stable distance between the sensor and the workpiece during the heating process and improving the operational stability of the bearing induction heating integral quenching equipment.

[0005] The technical solution adopted in this utility model is: a laser tracking device for a bearing induction heating integral quenching equipment. The bearing induction heating integral quenching equipment includes a cuboid quenching tank. A cross-shaped horizontal support frame is provided on the diagonal lines of the four corners of the quenching tank. The horizontal support frame can be raised and lowered within the quenching tank. Lifting devices are provided at the four corners of the horizontal support frame. The inner or outer ring of the bearing is placed on the lifting devices and rotated under the drive of a rotary drive mechanism. Horizontal and vertical induction heating robotic arms are provided on the four outer sides of the quenching tank. A heating sensor is installed at the bottom of the robotic arm, and the robotic arm drives the heating sensor... The induction heating head is positioned close to the surface of the workpiece to be induction heated, either the inner or outer ring of the bearing. Support columns are installed on the four outer sides of the quenching tank or at the center of the horizontal support frame. Mounting seats are mounted on the support columns, and laser distance sensors are installed at the front end of the mounting seats. During the induction heating process, the laser distance sensors continuously detect the change in distance between the sensors and the surface of the bearing inner or outer ring to be induction heated, and transmit the monitoring signal to the control system. This control system moves the heating sensor head in real time to maintain a relatively stable heating distance between the heating sensor and the surface of the bearing inner or outer ring to be induction heated during the heating process.

[0006] The laser distance sensor is installed on the same side of the inner or outer ring of the bearing workpiece to be heated, and is located before the inner or outer ring of the bearing workpiece rotates to the entry side of the heating sensor. The number of laser distance sensors is consistent with the number of heating sensor heads and corresponds one-to-one. The laser detection point is set at a point where the wall thickness of the inner or outer ring of the bearing workpiece is relatively thin.

[0007] The mounting base is integrally formed from a long strip plate and two vertical side plates. The front end of the plate has four mounting holes, and the bottom of the laser distance sensor has waist-shaped holes on both sides. The position and size of the waist-shaped holes are adapted to the mounting holes. The laser distance sensor is installed at the front end of the mounting base through the mounting holes. The rear end of the plate has locking holes, and the bottom surface of the plate is located at the locking holes and is fixedly fitted with a locking device between the two side plates.

[0008] The locking device includes two symmetrically arranged semi-circular clamping ring plates. Locking plates are integrally provided on both sides of the clamping ring plates. At least two through holes are opened on the locking plates. The upper edge of the clamping ring plates is fixedly connected to the bottom surface of the mounting plate.

[0009] The mounting base is fitted onto the support column through locking holes and a locking device. A circular plastic plate is fitted between the inside of the locking device and the support column. The mounting base is locked and fixed onto the support column by bolts connecting the locking plates on both sides of the locking device. The mounting height and angle of the mounting base on the support column can be adjusted arbitrarily, so that the laser distance sensor on the mounting base can accurately adjust the detection position point of the corresponding bearing inner ring or bearing outer ring workpiece.

[0010] The bottom of the support column is fixedly provided with a base, and the base has anchor holes at the four corners. The support column is installed and fixed by anchor bolts.

[0011] The diameter of the support column is compatible with the diameter of the locking hole, clamping ring plate, and plastic plate of the mounting base.

[0012] The laser distance sensor's sensor terminal is electrically connected to the control system and transmits the monitoring signal to the control system, which then controls the heating sensor head to move and adjust in real time.

[0013] The laser distance sensor is a high-precision laser distance sensor with a detection accuracy of ±0.02mm.

[0014] Lifting devices are vertically installed on the outer sides of the four corners of the quenching tank. Vertical connecting columns are fixedly installed at the four corners of the horizontal support frame inside the quenching tank. The top of the lifting device is fixedly connected to the top of the vertical connecting column by bolts. The lifting device drives the horizontal support frame and the workpiece to move up and down through the connecting columns.

[0015] A worm gear transmission mechanism is installed at the cross center of the horizontal support frame. The worm gear transmission mechanism is powered by a torque motor through a worm gear reducer. A gear is installed on the worm gear shaft of the worm gear transmission mechanism. Drive positioning blocks are installed at the four corners of the horizontal support frame near the end. A grid-shaped rack is slidably installed along the length of the horizontal support frame. The outer end of the rack is fixedly connected to the drive positioning block. The rack and gear mesh with each other. The rack drives the drive positioning block to move along the length of the horizontal support frame to adjust the diameter of the lifting device and adapt to bearing inner rings or bearing outer rings of different diameters. The drive positioning block is equipped with a drive support roller and a rotating positioning roller. The workpiece is placed on the drive support roller, and the rotating positioning roller is movably supported and positioned on the annular surface of the workpiece. When the drive support roller rotates, it drives the workpiece to rotate.

[0016] The bearing induction heating integral quenching equipment is an existing technology. During induction heating, the workpiece is placed on the lifting device of the horizontal support frame, and the workpiece is rotated when the support roller is driven to rotate. During quenching, the horizontal support frame can move the workpiece up and down in the quenching tank. The specific structure of the bearing induction heating integral quenching equipment will not be described in detail.

[0017] The laser distance sensor is installed on the same side of the workpiece to be induction heated in the inner or outer ring of the bearing, and is located before the workpiece rotates to the entry side of the heating sensor. The number of laser distance sensors is the same as the number of heating sensor heads. The laser detection point is set at a point where the wall thickness of the inner or outer ring of the bearing is relatively thin. The purpose of this setting is to detect the change in distance signal between the workpiece and the heating sensor head through high-precision laser distance sensors, and transmit it to the program-controlled robotic arm to drive the heating sensor head to move in real time as a servo. The automatic adjustment is more stable and accurate, so that the distance gap between the sensor and the workpiece can be automatically tracked and detected during the heating process, and the thermal expansion deformation of the workpiece can be automatically compensated. The gap deviation between the workpiece and the sensor is automatically tracked and compensated by the transformer-rotated servo motor, and precisely adjusted so that the gap between the sensor head and the workpiece to be induction heated remains consistent in real time, and the heating is uniform, thereby ensuring the quality of induction heating of the workpiece.

[0018] The locking device includes two symmetrically arranged semi-circular clamping ring plates. Locking plates are integrally formed on both sides of the clamping ring plates, with at least two through holes on each locking plate. The upper edge of the clamping ring plates is fixedly connected to the bottom surface of the mounting base plate. This design allows for adjustment of the laser distance sensor's installation height and angle during on-site use by adjusting the position of the mounting base on the support column, thus matching the on-site installation requirements. It features convenient on-site installation and use, and the ability to arbitrarily adjust the height and angle, making it suitable for adjusting different workpieces and effectively improving work efficiency.

[0019] A circular plastic plate is fitted inside the locking device and between it and the support column. The mounting seat is locked and fixed to the support column by bolts connecting the locking plates on both sides of the locking device. The purpose of this setting is that the plastic plate can provide locking space and friction for the clamping ring plate. The plastic plate is relatively soft and easier to squeeze, so as to ensure that the locking device can lock and fix the mounting seat to the support column.

[0020] The beneficial effects of this invention are as follows: The laser tracking device has a compact and reasonable structural design and is easy to operate. By setting a high-precision laser distance sensor, it can effectively track the thermal expansion changes of the workpiece during overall induction heating. Through multiple real-time data detected by the laser distance sensor, the control system can accurately adjust the position of the sensor in real time during the heating process, maintaining a relatively stable and consistent distance between the sensor and the workpiece. This improves the stability of the induction heating equipment, avoids the induction coil touching the workpiece, ensures uniformity during induction heating, reduces product rework, and even sensor damage and product scrap, thereby improving the quality of product heat treatment. Attached Figure Description

[0021] Figure 1This is a top view schematic diagram of the overall structure of the bearing inner ring induction heating device with laser tracking device according to this utility model;

[0022] Figure 2 This is a top view schematic diagram of the overall structure of the bearing outer ring induction heating device with laser tracking device according to this utility model;

[0023] Figure 3 This is a schematic diagram of the elevation structure of the bearing inner ring induction heating according to this utility model;

[0024] Figure 4 This is a schematic diagram of the elevation structure of the bearing outer ring induction heating according to this utility model;

[0025] Figure 5 A three-dimensional structural diagram of the laser sensor installation of this utility model;

[0026] Figure 6 This is a front three-dimensional structural diagram of the laser sensor mounting base of this utility model;

[0027] Figure 7 This is a three-dimensional structural diagram of the reverse side of the laser sensor mounting base of this utility model.

[0028] The markings in the diagram are: 1. Bearing induction heating integral quenching equipment; 2. Quenching tank; 3. Horizontal support frame; 4. Bearing inner ring; 5. Bearing outer ring; 6. Robotic arm; 7. Heating sensor; 8. Laser distance sensor; 9. Sensor terminal; 10. Support column; 11. Base; 12. Anchor hole; 13. Mounting seat; 14. Locking hole; 15. Locking device; 16. Mounting hole; 17. Waist-shaped hole; 18. Clamping ring plate; 19. Locking plate; 20. Plastic plate; 21. Bolt. Detailed Implementation

[0029] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0030] like Figure 1-7As shown, a laser tracking device for a bearing induction heating integral quenching equipment 1 includes a cuboid quenching tank 2. A cross-shaped horizontal support frame 3 is arranged on the diagonal lines of the four corners of the quenching tank 2. The horizontal support frame 3 can be raised and lowered within the quenching tank 2. Lifting devices are provided at the four corners of the horizontal support frame 3. The bearing inner ring 4 or bearing outer ring 5 is placed on the lifting devices and rotated under the drive of a rotary drive mechanism. Horizontal and vertical induction heating robotic arms 6 are provided on the outer sides of the four sides of the quenching tank 2. A heating sensor 7 is installed at the bottom of the robotic arm 6. The robotic arm 6 moves the head of the heating sensor 7 close to the bearing inner ring. 4 or the outer ring 5 of the bearing workpiece to be induction heated, support columns 10 are respectively installed on the outer side of the four sides of the quenching tank 2 or at the center of the horizontal support frame 3. Mounting bases 13 are installed on the support columns 10. A laser distance sensor 8 is installed at the front end of the mounting base 13. During the induction heating process of the workpiece, the laser distance sensor 8 continuously detects the change in distance between itself and the inner ring 4 or outer ring 5 of the bearing to be induction heated, and transmits the monitoring signal to the control system, which controls the heating sensor 7 to move in real time, so as to keep the heating distance between the heating sensor 7 and the inner ring 4 or outer ring 5 of the bearing to be induction heated relatively stable during the heating process.

[0031] The laser distance sensor 8 is installed on the same side of the workpiece to be heated, either the inner ring 4 or the outer ring 5 of the bearing, and is located before the workpiece rotates to the entry side of the heating sensor 7. The number of laser distance sensors 8 is consistent with the number of heating sensors 7 and corresponds one-to-one. The laser detection point is located at a point where the wall thickness of the workpiece is relatively thin.

[0032] The mounting base 13 is integrally formed from a long strip plate and vertical side plates on both sides. The front end of the plate has four mounting holes 16. The bottom sides of the laser distance sensor 8 have waist-shaped holes 17. The position and size of the waist-shaped holes 17 are adapted to the mounting holes 16. The laser distance sensor 8 is installed at the front end of the mounting base 13 through the mounting holes 13. The rear end of the plate has a locking hole 14. The bottom surface of the plate is located at the locking hole 14 and is fixedly provided with a locking device 15 between the two side plates.

[0033] The locking device 15 includes two symmetrically arranged semi-circular clamping ring plates 18. Locking plates 19 are integrally provided on both sides of the clamping ring plates 18. At least two through holes are opened on the locking plates 19. The upper edges of the clamping ring plates 18 and the locking plates 19 are fixedly connected to the bottom surface of the plate of the mounting base 13.

[0034] The mounting base 13 is sleeved on the support column 10 through the locking hole 14 and the locking device 15. A circular plastic plate 20 is sleeved between the inside of the locking device 15 and the support column 10. The mounting base 13 is locked and fixed to the support column 10 by bolts 21 on the locking plates 19 on both sides of the locking device 15. The mounting height and angle of the mounting base 13 on the support column 10 can be adjusted arbitrarily, allowing the laser distance sensor 8 on the mounting base 13 to accurately adjust the detection position point of the corresponding bearing inner ring 4 or bearing outer ring 5 workpiece. The diameter of the support column 10 is compatible with the diameter of the locking hole 14, the clamping ring plate 18, and the plastic plate 20 of the mounting base 13.

[0035] The bottom of the support column 10 is fixedly provided with a base 11, and the base 11 has anchor holes 12 at the four corners. The support column 10 is installed and fixed by anchor bolts.

[0036] The laser distance sensor 8 has its sensor terminal 9 electrically connected to the control system and transmits the monitoring signal to the control system, controlling the heating sensor 7 to move and adjust its head in real time. The laser distance sensor 8 is a high-precision laser distance sensor with a detection accuracy of ±0.02mm.

[0037] When using, such as Figure 1 , Figure 3 As shown, during the overall quenching heat treatment of the bearing inner ring 4, the support column 10 is fixed to the center position of the horizontal support frame 3 using anchor bolts; as Figure 2 , Figure 4 As shown, during the overall quenching heat treatment of the bearing outer ring, support columns 10 are installed on the four outer sides of the quenching tank 2. The support columns 10 are fixed to the four outer sides of the quenching tank 2 with anchor bolts. The number of support columns 10 is consistent with the number of heating inductors 7 and they correspond one-to-one. Then, the locking hole 14 of the mounting base 13 is inserted into the support column 10. The mounting base 13 is adjusted to be inserted into the support column 10 to the required height, and the angle of the mounting base 13 is adjusted by rotating it along the support column 10 so that the laser distance on the mounting base 13 is transmitted. The sensor 8 rotates to the front of the workpiece, which is aligned with the inner ring 4 or outer ring 5 of the bearing, and is directly in front of the detection position point of the inner ring 4 or outer ring 5 of the bearing workpiece to be heated and with a relatively thin wall thickness. The mounting base 13 is sleeved on the support column 10 through the locking hole 14 and the locking device 15. A circular plastic plate 20 is sleeved between the inside of the locking device 15 and the support column 10. The mounting base 13 is locked and fixed on the support column 10 by the bolts 21 of the locking plates 19 on both sides of the locking device 15.

[0038] During induction heating, the inner ring 4 or outer ring 5 of the bearing workpiece continuously undergoes radial thermal expansion. The laser distance sensor 8 detects the continuous change in the distance between itself and the raceway surface of the inner ring 4 or outer ring 5, and transmits the monitoring signal to the control system. Based on the detected data changes, the control system adjusts the position of each heating sensor 7 in real time, maintaining a relatively stable heating distance between the heating sensor 7 and the surface to be heated on the inner ring 4 or outer ring 5 during induction heating. This achieves effective tracking and handling of the entire workpiece during induction heating. It improves the stability of the induction heating equipment, prevents the induction coil from touching the workpiece, ensures uniformity during induction heating, reduces product rework, sensor damage, and product scrap, and ultimately improves the quality of heat treatment.

[0039] In addition to the above embodiments, this utility model may have other implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. A laser tracking device for an induction heating integral quenching equipment for bearings, the bearing induction heating integral quenching equipment comprising a cuboid quenching tank, with cross-shaped box-type horizontal support frames arranged diagonally at the four corners of the quenching tank, the horizontal support frames being movable within the quenching tank, and lifting devices provided at the four corners of the horizontal support frames, the bearing inner ring or bearing outer ring being placed on the lifting devices and rotating under the drive of a rotary drive mechanism; characterized in that: The quenching tank has horizontal and vertical induction heating robotic arms on all four sides. A heating sensor is installed at the bottom of the robotic arm. The robotic arm moves the heating sensor head close to the surface of the workpiece to be inducted and heated, which is the inner or outer ring of the bearing. Support columns are installed on the four sides of the quenching tank or at the center of the horizontal support frame. Mounting seats are installed on the support columns. A laser distance sensor is installed at the front end of the mounting seat. During the induction heating of the workpiece, the laser distance sensor continuously detects the change in distance between itself and the surface of the inner or outer ring of the bearing to be inducted and heated, and transmits the monitoring signal to the control system. The control system moves the heating sensor head in real time to keep the heating distance between the heating sensor and the surface of the inner or outer ring of the bearing relatively stable during the heating process.

2. The laser tracking device for an induction heating integral quenching equipment for bearings according to claim 1, characterized in that: The laser distance sensor is installed on the same side of the inner or outer ring of the bearing workpiece to be heated, and is located before the inner or outer ring of the bearing workpiece rotates to the entry side of the heating sensor. The number of laser distance sensors is consistent with the number of heating sensor heads and corresponds one-to-one. The laser detection point is set at a point where the wall thickness of the inner or outer ring of the bearing workpiece is relatively thin.

3. The laser tracking device for an induction heating integral quenching equipment for bearings according to claim 1, characterized in that: The mounting base is integrally formed from a long strip plate and two vertical side plates. The front end of the plate has four mounting holes, and the bottom of the laser distance sensor has waist-shaped holes on both sides. The position and size of the waist-shaped holes are matched with the mounting holes. The laser distance sensor is installed at the front end of the mounting base through the mounting holes. The rear end of the plate has locking holes, and the bottom surface of the plate is located at the locking holes and is fixed with a locking device between the two side plates.

4. A laser tracking device for an induction heating integral quenching equipment for bearings according to claim 3, characterized in that: The locking device includes two symmetrically arranged semi-circular clamping ring plates. Locking plates are integrally provided on both sides of the clamping ring plates. At least two through holes are opened on the locking plates. The upper edge of the clamping ring plates is fixedly connected to the bottom surface of the mounting plate.

5. A laser tracking device for an induction heating integral quenching equipment for bearings according to claim 1 or 3, characterized in that: The mounting base is fitted onto the support column through locking holes and a locking device. A circular plastic plate is fitted between the inside of the locking device and the support column. The mounting base is locked and fixed onto the support column by bolts connecting the locking plates on both sides of the locking device. The mounting height and angle of the mounting base on the support column can be adjusted arbitrarily, so that the laser distance sensor on the mounting base can accurately adjust the detection position point of the corresponding bearing inner ring or bearing outer ring workpiece.

6. A laser tracking device for an induction heating integral quenching equipment for bearings according to claim 1, characterized in that: The bottom of the support column is fixed with a base, and the base has anchor holes at the four corners. The support column is installed and fixed by anchor bolts.

7. A laser tracking device for an induction heating integral quenching equipment for bearings according to claim 1, characterized in that: The diameter of the support column is matched with the diameter of the locking hole, clamping ring plate, and plastic plate of the mounting base.

8. A laser tracking device for an induction heating integral quenching equipment for bearings according to claim 1, characterized in that: The laser distance sensor's terminal is electrically connected to the control system, and transmits the monitoring signal to the control system to control the heating sensor head to move and adjust in real time. The laser distance sensor is a high-precision laser distance sensor with a detection accuracy of ±0.02mm.

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