A threaded laser quenching method, apparatus, device, and medium

Abstract

The application discloses a thread laser quenching method, device, equipment and medium, and relates to the technical field of mechanical manufacturing, to solve the problem that the existing thread workpiece quenching is prone to collapse angle. A thread laser quenching method comprises the following steps: obtaining an initial hardness value and a target hardness value of a thread workpiece to be quenched and determining a thread starting point of the thread workpiece to be quenched; determining a first turning position, a second turning position and a termination position of quenching of the thread workpiece to be quenched according to the thread starting point; performing quenching treatment on a thread surface of the thread workpiece to be quenched, so that the hardness value of the first thread surface increases from the initial hardness value to the target hardness value; and the hardness value of the second thread surface decreases from the target hardness value to the initial hardness value. The thread laser quenching method provided by the application is used for making the hardness of the thread surface of the thread workpiece change in a gradient mode, and the collapse angle phenomenon is avoided.

Description

Technical Field

[0001] This invention relates to the field of mechanical manufacturing technology, and in particular to a method, apparatus, equipment and medium for thread laser quenching. Background Technology

[0002] Threaded workpieces have a wide range of applications, such as manufacturing fasteners and connecting parts, transmitting power and changing motion, adjusting and measuring, lifting weights, or overcoming considerable frictional resistance. During the processing of threaded workpieces, the thread surface needs to be hardened to enhance the rigidity, hardness, wear resistance, fatigue strength, and toughness of the thread. Currently, the hardening of threaded workpieces usually adopts the overall heat treatment method of the thread, which increases the brittleness of the thread and makes it prone to chipping. Summary of the Invention

[0003] The purpose of this invention is to provide a method, apparatus, equipment and medium for laser hardening of threads, which can make the hardness of the thread surface of the threaded workpiece change in a gradient manner, avoid chipping, and increase the service life of the thread.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] In a first aspect, the present invention provides a thread laser quenching method, comprising:

[0006] Obtain the initial hardness value and target hardness value of the threaded workpiece to be quenched and determine the thread start point of the threaded workpiece to be quenched.

[0007] The first turning point, the second turning point, and the termination point of the threaded workpiece to be quenched are determined based on the thread starting point; the first turning point is the position corresponding to the target angle of rotation of the threaded workpiece from the thread starting point, and the second turning point is the position corresponding to the target angle of rotation of the threaded workpiece from the termination point in the opposite direction.

[0008] The thread surface of the workpiece to be quenched is subjected to quenching treatment, so that the hardness value of the first thread surface increases from the initial hardness value to the target hardness value; and the hardness value of the second thread surface decreases from the target hardness value to the initial hardness value; the first thread surface is the thread surface corresponding to the thread starting point to the first turning position, and the second thread surface is the thread surface corresponding to the thread ending position from the second turning position to the ending position.

[0009] Compared with existing technologies, the thread laser quenching method provided by this invention avoids processing errors by determining the thread start point of the threaded workpiece; it determines the first turning point, second turning point, and termination point of the threaded workpiece quenching based on the thread start point; it enables the partitioning of the threaded surface of the workpiece, and quenching treatment on the threaded surface of the workpiece, so that the hardness value of the first threaded surface increases from the initial hardness value to the target hardness value; and the hardness value of the second threaded surface decreases from the target hardness value to the initial hardness value. Different laser parameters can be used for different regions to obtain threaded workpieces with a step-like change in the hardness value of the threaded surface. The hardness value of the thread starting region increases from the initial hardness value to the target hardness value, and the hardness value of the thread ending region decreases from the target hardness value to the initial hardness value, so that the hardness value of each region of the threaded workpiece surface transitions uniformly, and the hardness value between the threaded surface and the threaded workpiece body also transitions uniformly, avoiding the problem of excessive thread brittleness, preventing thread chipping, and improving the quality and service life of the threaded workpiece.

[0010] In a second aspect, the present invention provides a thread laser quenching apparatus, comprising:

[0011] The data acquisition and thread start point confirmation module is used to acquire the initial hardness value and target hardness value of the threaded workpiece to be quenched and to determine the thread start point of the threaded workpiece to be quenched.

[0012] The termination position and turning position confirmation module is used to determine the first turning position, the second turning position and the termination position of the threaded workpiece to be quenched based on the thread starting point; the first turning position is the position corresponding to the target angle of rotation of the threaded workpiece to be quenched from the thread starting point, and the second turning position is the position corresponding to the target angle of rotation of the threaded workpiece to be quenched in the opposite direction from the termination position.

[0013] The quenching module is used to quench the thread surface of the threaded workpiece to be quenched, so that the hardness value of the first thread surface increases from the initial hardness value to the target hardness value; and the hardness value of the second thread surface decreases from the target hardness value to the initial hardness value; the first thread surface is the thread surface corresponding to the thread starting point to the first turning position, and the second thread surface is the thread surface corresponding to the thread ending position from the second turning position to the ending position.

[0014] Thirdly, the present invention provides a thread laser quenching device, comprising:

[0015] A communication unit / communication interface is used to acquire the initial hardness value and target hardness value of the threaded workpiece to be quenched and to determine the thread start point of the threaded workpiece to be quenched.

[0016] The processing unit / processor is used to determine the first turning position, the second turning position, and the termination position of the threaded workpiece to be quenched based on the thread starting point; the first turning position is the position corresponding to the target angle of rotation of the threaded workpiece to be quenched from the thread starting point, and the second turning position is the position corresponding to the target angle of rotation of the threaded workpiece to be quenched in the opposite direction from the termination position.

[0017] The thread surface of the workpiece to be quenched is subjected to quenching treatment, so that the hardness value of the first thread surface increases from the initial hardness value to the target hardness value; and the hardness value of the second thread surface decreases from the target hardness value to the initial hardness value; the first thread surface is the thread surface corresponding to the thread starting point to the first turning position, and the second thread surface is the thread surface corresponding to the thread ending position from the second turning position to the ending position.

[0018] Fourthly, the present invention provides a computer storage medium storing instructions that, when executed, implement the above-described thread laser quenching method.

[0019] The technical effects achieved by the device-type solutions provided in the second aspect, the equipment-type solutions provided in the third aspect, and the media-type solutions provided in the fourth aspect are the same as those achieved by the method-type solutions provided in the first aspect, and will not be repeated here. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0021] Figure 1 This is a partial structural diagram of the laser quenching equipment provided by the present invention;

[0022] Figure 2 A flowchart of a thread laser quenching method provided by the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a thread laser quenching device provided by the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of a thread laser quenching device provided by the present invention.

[0025] Figure label:

[0026] 1-Threaded workpiece, 2-High-speed camera, 3-Laser head. Detailed Implementation

[0027] To facilitate a clear description of the technical solutions in the embodiments of the present invention, the terms "first" and "second" are used to distinguish identical or similar items with essentially the same function and effect. For example, the first threshold and the second threshold are merely used to distinguish different thresholds and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and that the terms "first" and "second" are not necessarily different.

[0028] It should be noted that in this invention, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0029] In this invention, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, a combination of a and b, a combination of a and c, a combination of b and c, or a, b, and c, where a, b, and c can be single or multiple.

[0030] Laser hardening uses a laser to heat the surface of a material above its phase transformation point. As the material cools, austenite transforms into martensite, thus hardening the surface. When using laser hardening technology to harden the thread surface of threaded workpieces, the same laser hardening parameters are generally selected to harden the entire thread, ensuring that all parts of the thread achieve the same hardness. Because the hardness is the same in all areas of the thread, the surface hardness of the thread at the beginning and end of the thread differs too much from the hardness of the threaded workpiece itself, resulting in excessive brittleness of the thread. This makes it prone to chipping and reduces the service life of the threaded workpiece.

[0031] To address the aforementioned problems, this invention provides a thread laser quenching method, apparatus, equipment, and medium. The thread quenching process is divided into zones, and different process parameters are applied to different zones to create a stepped variation in the surface hardness and depth values ​​of the thread, preventing excessive brittleness that could lead to chipping and fracture. The following description is in conjunction with the accompanying drawings.

[0032] Figure 1 This is a partial structural diagram of the laser quenching equipment provided by the present invention, as shown below. Figure 1 The laser hardening equipment shown includes at least a high-speed camera 2, a laser head 3, and a rotary table. A threaded workpiece 1 is mounted on the rotary table. Both the high-speed camera 2 and the laser head 3 are mounted on a motion mechanism. During the secondary clamping of the threaded workpiece 1, the rotary table rotates it 360 degrees. The high-speed camera 2 moves to directly above the threaded workpiece 1 via the motion mechanism, photographing the workpiece to locate the thread starting point. When the thread starting point is found, the rotary table stops rotating, records and transmits the coordinates of the thread starting point to the motion mechanism. For batch hardening of threaded workpieces of the same model, the recorded thread starting point position can be used for direct positioning, eliminating the need for re-determining the thread starting point and saving time. The motion mechanism automatically locates the thread starting point based on its coordinates and controls the laser head to move to the processing position directly above the thread starting point, emitting a laser beam. The laser beam is irradiated onto the threaded surface of the workpiece in a line segment, with the length of the laser line segment being the same as the thread width. As the threaded workpiece 1 rotates, the laser power parameters are adjusted, using different laser powers to scan different areas of the threaded surface for hardening. If the high-speed camera fails to find the thread starting point, an error is reported, and the process ends. It should be understood that this invention only performs quenching treatment on the threaded surface of the threaded workpiece 1, therefore Figure 1 Only the structure of threaded workpiece 1 with the threaded portion is shown in the diagram. Figure 1 Only a portion of the structure of the laser hardening equipment is shown. Threaded workpieces can be any workpiece with threads, such as bolts or oil drill pipes. Taking the connecting rod of an oil drill pipe as an example, oil drill pipes are particularly important in the oil extraction industry, and their connections are even more critical. Improper treatment of the connecting rod's threads can cause them to break, resulting in incalculable economic losses. Specific methods for laser hardening threads are combined... Figure 2 Please provide an explanation.

[0033] Figure 2 This invention provides a flowchart of a thread laser quenching method. This thread laser quenching method is used on a laser quenching device and includes the following steps:

[0034] Step 201: Obtain the initial hardness value and target hardness value of the threaded workpiece to be quenched and determine the thread start point of the threaded workpiece to be quenched.

[0035] The initial hardness value of the threaded workpiece to be quenched is the hardness value of the base material of the threaded workpiece or is very close to the hardness value of the base material. The target hardness value is the maximum hardness value that the thread surface should reach during the quenching process.

[0036] As an optional approach, the method for determining the thread start point of a threaded workpiece includes:

[0037] A high-speed camera is controlled to capture images of a rotating threaded workpiece. The threaded workpiece is mounted on a rotating table of a laser hardening equipment, and the high-speed camera lens is aimed at the threaded workpiece. The intersection point of the thread outline in the captured image is determined as the thread start point.

[0038] Step 202: Determine the first turning point, the second turning point, and the termination position of the threaded workpiece to be quenched based on the thread starting point; the first turning point is the position corresponding to the target angle of rotation of the threaded workpiece from the thread starting point, and the second turning point is the position corresponding to the target angle of rotation of the threaded workpiece in the opposite direction from the termination position. The target angle can be 180 degrees or any angle set according to requirements. The following explanation uses a target angle of 180 degrees as an example.

[0039] Based on the determined thread starting point, the threaded surface of the threaded workpiece can be divided into three regions: the thread starting region, the complete thread region, and the thread ending region. The ending position is the position where the thread ends. The ending position can be determined based on the thread starting point and pitch information. The position of the thread starting point rotated by the target angle is set as the first turning point, and the position of the ending position rotated by the opposite target angle is set as the second turning point. The threaded surface corresponding to the thread starting point to the first turning point is the thread starting region, the threaded surface corresponding to the first turning point to the second turning point is the complete thread region, and the threaded surface corresponding to the second turning point to the ending position is the thread ending region. The quenching process begins from the thread start point. To ensure that the hardness value of the thread surface transitions from the initial hardness value, the laser power used on the thread surface corresponding to the preset rotation angle from the thread start point is low or the laser is off. Similarly, the laser power used on the thread surface corresponding to the preset rotation angle in the opposite direction from the end position is also low or the laser is off. This ensures that the hardness value of the thread surface corresponding to the preset rotation angle from the thread start point is the initial hardness value, and the quenching depth value of the thread surface corresponding to the preset rotation angle from the thread start point to the end position is zero. The required hardness value is the initial hardness value.

[0040] Step 203: Quench the thread surface of the threaded workpiece to be quenched, so that the hardness value of the first thread surface increases from the initial hardness value to the target hardness value; and decrease the hardness value of the second thread surface from the target hardness value to the initial hardness value.

[0041] The quenching of the threaded workpiece is performed on the thread surface from the starting point to the ending point. The hardness value of the first thread surface from the starting point to the first turning point needs to be increased gradually from the initial hardness value to the target hardness value according to the preset hardness value. The quenching depth value also increases gradually from zero to the target quenching depth value according to the preset quenching depth value. The hardness value of the third thread surface from the first turning point to the second turning point is the target hardness value, and the quenching depth value is the target quenching depth value. The hardness value of the second thread surface from the second turning point to the ending point decreases gradually from the target hardness value to the initial hardness value according to the preset hardness value. The quenching depth value also decreases gradually from the target quenching depth value to zero according to the preset quenching depth value.

[0042] As an optional method, the thread surface of the workpiece to be quenched is subjected to quenching treatment, so that the hardness value of the first thread surface increases from the initial hardness value to the target hardness value, including:

[0043] The first laser power is determined based on the initial hardness value, and the threaded workpiece to be quenched is driven to rotate. The specific process is as follows:

[0044] Because the required hardness value of the thread surface from the starting point of the thread to the corresponding preset rotation angle is the base material hardness value, the laser power used for quenching this area is low power or no laser is used in this area. Quenching begins from the position where the threaded workpiece first rotates by the preset rotation angle, using the first laser power. The hardness value of the thread surface corresponding to the position from the first preset rotation angle to the second preset rotation angle is set as the first hardness value. The first hardness value is obtained by adding the preset hardness value to the initial hardness value. The initial laser power is determined based on the first hardness value. Using the initial laser power ensures that the hardness value of the quenched thread surface reaches the first hardness value. Starting from the initial laser power, the laser power increases by the preset power for each preset rotation angle until the threaded workpiece rotates to the first turning position. The first laser power increases incrementally from the initial laser power according to the preset power. The preset power is determined based on the preset hardness value and the preset quenching depth value. When rotating to the first turning position, the first laser power no longer increases by the preset power.

[0045] The threaded workpiece starts rotating from the thread starting position. When the threaded workpiece rotates a preset rotation angle from the thread starting position, the first laser power is used to quench the first thread surface. The line segment laser emitted by the laser head irradiates the thread surface. As the threaded workpiece rotates, the first laser power is used to scan and quench the first thread surface until the threaded workpiece rotates to the first turning position. This causes the hardness value of the first thread surface corresponding to each preset rotation angle of the threaded workpiece to increase by a preset hardness value, and the corresponding quenching depth value of the first thread surface to increase by a preset quenching depth value. The first laser power is obtained by increasing the preset power on the laser power used for quenching the thread surface corresponding to the previous preset rotation angle.

[0046] Understandably, the preset hardness value and preset quenching depth value are selected as needed.

[0047] As an alternative approach, after the first thread surface has been quenched, the quenching of the third thread surface corresponding to the first turning point to the second turning point begins, with the following steps:

[0048] The threaded surface of the threaded workpiece is quenched using the current laser power until the threaded workpiece rotates to the second turning position, completing the quenching of the third threaded surface area, and then the second threaded surface is quenched.

[0049] The current laser power value is the laser power used on the first thread surface corresponding to the preset rotation angle in the reverse rotation at the first turning position. At this time, the laser power can make the hardness value of the thread surface reach the target hardness value and the depth value reach the target quenching depth value; the laser power value remains unchanged during the laser quenching process in this area.

[0050] As an optional approach, after the surface of the third thread is hardened, the surface of the second thread corresponding to the second turning point to the termination point is hardened, and the steps are as follows:

[0051] Starting from the second turning position, the second laser power is used to quench the second thread surface until the threaded workpiece rotates to the termination position, so that the hardness value of the second thread surface corresponding to each preset rotation angle of the threaded workpiece decreases by a preset hardness value, and the quenching depth value decreases by a preset quenching depth value; the second laser power is obtained by reducing the preset power based on the laser power used to quench the thread surface corresponding to the previous preset rotation angle.

[0052] The second laser power starts from the laser power used for quenching the surface of the third thread, and decreases by a preset power for each preset rotation angle until it is reduced to the initial laser power, and reaches the termination position where the preset rotation angle is reversed.

[0053] After laser quenching adjustment, the hardness and quenching depth values ​​of the first thread surface are opposite to those of the second thread surface. This thread laser quenching method uses a high-speed camera to determine the thread starting point, enabling precise machining and avoiding machining errors. This technology allows for direct and accurate location of the thread starting point. Based on this starting point, the threaded workpiece is divided into regions, and different laser parameters are applied to different regions. This results in a step-like change in the hardness and depth values ​​of the threaded workpiece surface, ensuring a uniform transition from the parameters of the base material. With increased surface hardness under stress, this prevents excessive thread brittleness leading to fracture, thus increasing the service life of the threaded workpiece.

[0054] The embodiments of the present invention can divide functional modules according to the above method examples. For example, each function can be divided into its own functional module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the module division in the embodiments of the present invention is illustrative and only represents one logical functional division; other division methods may be used in actual implementation.

[0055] When dividing each functional module into its corresponding functional modules... Figure 3 This diagram illustrates the structure of a thread laser quenching device provided by the present invention, as shown below. Figure 3 As shown, the device may include:

[0056] The data acquisition and thread start confirmation module 301 is used to acquire the initial hardness value and target hardness value of the threaded workpiece to be quenched and to determine the thread start point of the threaded workpiece to be quenched.

[0057] The termination position and turning position confirmation module 302 is used to determine the first turning position, the second turning position and the termination position of the threaded workpiece to be quenched based on the thread starting point; the first turning position is the position corresponding to the target angle of rotation of the threaded workpiece to be quenched from the thread starting point, and the second turning position is the position corresponding to the target angle of rotation of the threaded workpiece to be quenched in the opposite direction from the termination position.

[0058] The quenching module 303 is used to quench the thread surface of the threaded workpiece to be quenched, so that the hardness value of the first thread surface increases from the initial hardness value to the target hardness value; and the hardness value of the second thread surface decreases from the target hardness value to the initial hardness value; the first thread surface is the thread surface corresponding to the thread starting point to the first turning position, and the second thread surface is the thread surface corresponding to the second turning position to the ending position.

[0059] Optionally, the data acquisition and thread start confirmation module 301 may specifically include:

[0060] A high-speed camera imaging unit is used to control a high-speed camera to capture images of a rotating threaded workpiece to be quenched, thereby obtaining an image; the threaded workpiece to be quenched is mounted on the rotating table of the quenching equipment, and the lens of the high-speed camera is aimed at the threaded workpiece to be quenched.

[0061] The thread start point determination unit is used to determine the intersection point of the thread outline in the captured image as the thread start point.

[0062] Optionally, the quenching depth value of the first thread surface is gradually increased from zero to the target quenching depth value according to the preset quenching depth value, and the quenching depth value of the second thread surface is gradually decreased from the target quenching depth value to zero according to the preset quenching depth value.

[0063] Optionally, the quenching module 303 may specifically include:

[0064] The first laser power determining unit is used to determine the first laser power based on the initial hardness value and drive the threaded workpiece to be quenched to rotate.

[0065] A first thread surface quenching unit is used to start quenching the first thread surface with the first laser power when the threaded workpiece rotates a preset rotation angle from the thread starting point, until the threaded workpiece rotates to the first turning position. This causes the hardness value of the first thread surface corresponding to each preset rotation angle to increase by a preset hardness value, and the corresponding quenching depth value of the first thread surface to increase by a preset quenching depth value. The first laser power is obtained by increasing the preset power based on the laser power used for quenching the thread surface corresponding to the previous preset rotation angle. Optionally, the quenching module 303 may further include:

[0066] The third thread surface quenching unit is used to continue quenching the thread surface of the workpiece to be quenched using the current laser power until the workpiece is rotated to the second turning position, thus completing the quenching of the third thread surface area, and then performing the quenching of the second thread surface.

[0067] Optionally, the quenching module 303 may further include:

[0068] The second thread surface quenching unit is used to quench the second thread surface with a second laser power starting from the second turning position until the thread workpiece to be quenched rotates to the termination position, so that the hardness value of the second thread surface corresponding to each preset rotation angle of the thread workpiece to be quenched decreases by a preset hardness value, and the quenching depth value decreases by a preset quenching depth value; the second laser power is obtained by reducing the preset power based on the laser power used for quenching the thread surface corresponding to the previous preset rotation angle.

[0069] Optionally, the preset power is determined based on a preset hardness value and a preset quenching depth value.

[0070] The aforementioned thread laser quenching device is a virtual device, comprising virtual units and virtual functional modules. This device is built on a laser quenching equipment for use. At the same time, the thread laser quenching device provided by this invention corresponds to the thread laser quenching method and acts on the laser quenching equipment.

[0071] When using integrated units Figure 4 A schematic diagram of the structure of a thread laser quenching device provided by the present invention is shown, as follows: Figure 4 As shown, the thread laser hardening equipment may include:

[0072] A communication unit / communication interface is used to acquire the initial hardness value and target hardness value of the threaded workpiece to be quenched and to determine the thread start point of the threaded workpiece to be quenched.

[0073] The processing unit / processor is used to determine the first turning point, the second turning point, and the termination position of the threaded workpiece to be quenched based on the thread starting point; the first turning point is the position corresponding to the target angle of rotation of the threaded workpiece to be quenched from the thread starting point, and the second turning point is the position corresponding to the target angle of rotation of the threaded workpiece to be quenched in the opposite direction from the termination position.

[0074] The thread surface of the workpiece to be quenched is subjected to quenching treatment, so that the hardness value of the first thread surface increases from the initial hardness value to the target hardness value; and the hardness value of the second thread surface decreases from the target hardness value to the initial hardness value; the first thread surface is the thread surface corresponding to the thread starting point to the first turning position, and the second thread surface is the thread surface corresponding to the thread ending position from the second turning position to the ending position.

[0075] The aforementioned thread laser quenching equipment is used on top of a laser quenching device. At the same time, the thread laser quenching equipment and thread laser quenching method provided by this invention are corresponding to each other and are applied to the laser quenching device.

[0076] In some possible implementations, the aforementioned thread laser hardening device may include a storage module for storing program code and data.

[0077] The processing unit can be a processor or controller, such as a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this invention. The processor can also be a combination that implements computational functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc. The communication module can be a transceiver, transceiver circuitry, or communication interface, etc. The storage module can be a memory.

[0078] like Figure 4 As shown, the processor described above can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of the program of the present invention. The communication interface described above can be one or more. The communication interface can use any transceiver-like device for communicating with other devices or communication networks.

[0079] like Figure 4 As shown, the terminal device described above may also include a communication line. The communication line may include a path for transmitting information between the components described above.

[0080] Optional, such as Figure 4 As shown, the terminal device may further include a memory. The memory stores computer execution instructions for implementing the present invention, and the execution is controlled by a processor. The processor executes the computer execution instructions stored in the memory, thereby implementing the method provided in the embodiments of the present invention.

[0081] like Figure 4As shown, the memory can be read-only memory (ROM) or other types of static storage devices capable of storing static information and instructions, random access memory (RAM) or other types of dynamic storage devices capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited to these. The memory can exist independently and be connected to the processor via communication lines. The memory can also be integrated with the processor.

[0082] Optionally, the computer execution instructions in the embodiments of the present invention may also be referred to as application code, and the embodiments of the present invention do not specifically limit this.

[0083] In a specific implementation, as one example, such as Figure 4 As shown, a processor may include one or more CPUs, such as Figure 4 CPU0 and CPU1 in the CPU.

[0084] In a specific implementation, as one example, such as Figure 4 As shown, the terminal device may include multiple processors, such as Figure 4 The processors in the system. Each of these processors can be a single-core processor or a multi-core processor.

[0085] The above mainly describes the solutions provided by the embodiments of the present invention from the perspective of the interaction between various modules. It is understood that, in order to achieve the above functions, it includes corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should readily recognize that, in conjunction with the units and algorithm steps of the various examples described in the embodiments disclosed herein, the present invention can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0086] On the one hand, a computer-readable storage medium is provided, which stores instructions that, when executed, implement the aforementioned thread laser quenching method.

[0087] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present invention are performed entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a terminal, a user equipment, or other programmable device. The computer program or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video disc (DVD); or it can be a semiconductor medium, such as a solid-state drive (SSD).

[0088] Although the invention has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made therein without departing from the spirit and scope of the invention. Accordingly, this specification and drawings are merely exemplary descriptions of the invention as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of the invention. Clearly, those skilled in the art can make various alterations and modifications to the invention without departing from its spirit and scope. Thus, if such modifications and modifications of the invention fall within the scope of the claims and their equivalents, the invention is also intended to include such modifications and modifications.

Claims

1. A method for laser hardening of threads, characterized in that, include: Obtain the initial hardness value and target hardness value of the threaded workpiece to be quenched and determine the thread start point of the threaded workpiece to be quenched. The first turning point, the second turning point, and the termination point of the threaded workpiece to be quenched are determined based on the thread starting point; the first turning point is the position corresponding to the target angle of rotation of the threaded workpiece from the thread starting point, and the second turning point is the position corresponding to the target angle of rotation of the threaded workpiece from the termination point in the opposite direction. The thread surface of the threaded workpiece to be quenched is subjected to quenching treatment, so that the hardness value of the first thread surface increases from the initial hardness value to the target hardness value; and the hardness value of the second thread surface decreases from the target hardness value to the initial hardness value; the first thread surface is the thread surface corresponding to the thread starting point to the first turning position, and the second thread surface is the thread surface corresponding to the second turning position to the ending position. The quenching depth value of the first thread surface increases gradually from zero to the target quenching depth value according to the preset quenching depth value, and the quenching depth value of the second thread surface decreases gradually from the target quenching depth value to zero according to the preset quenching depth value. The step of quenching the thread surface of the workpiece to be quenched, so that the hardness value of the first thread surface increases from the initial hardness value to the target hardness value, includes: The first laser power is determined based on the initial hardness value, and the threaded workpiece to be quenched is driven to rotate. When the threaded workpiece to be quenched rotates a preset rotation angle from the starting point of the thread, the first laser power is used to quench the surface of the first thread until the threaded workpiece rotates to the first turning position. This causes the hardness value of the first thread surface corresponding to each preset rotation angle to increase by a preset hardness value, and the corresponding quenching depth value of the first thread surface to increase by the preset quenching depth value. The first laser power is obtained by increasing the preset power based on the laser power used for quenching the thread surface corresponding to the previous preset rotation angle.

2. The thread laser quenching method according to claim 1, characterized in that, Determining the thread start point of the workpiece to be quenched includes: A high-speed camera is controlled to capture images of a rotating threaded workpiece to be quenched, thereby obtaining images; the threaded workpiece to be quenched is mounted on the rotating table of the quenching equipment, and the lens of the high-speed camera is aimed at the threaded workpiece to be quenched. The intersection point of the thread outline in the captured image is determined as the thread start point.

3. The thread laser quenching method according to claim 1, characterized in that, The process of starting to quench the first thread surface using a first laser power, until the threaded workpiece to be quenched rotates to the first turning position, further includes: The current laser power is used to continue quenching the thread surface of the workpiece to be quenched until the workpiece is rotated to the second turning position, so that the hardness of the third thread surface is the target hardness value, and the quenching treatment of the third thread surface is completed. Then the quenching treatment of the second thread surface is performed.

4. The thread laser hardening method according to claim 1, characterized in that, The thread surface of the workpiece to be quenched is subjected to quenching treatment, so that the hardness value of the second thread surface decreases from the target hardness value to the initial hardness value, including: Starting from the second turning position, the second laser power is used to quench the second thread surface until the thread workpiece to be quenched rotates to the termination position, so that the hardness value of the second thread surface corresponding to each preset rotation angle of the thread workpiece to be quenched decreases by the preset hardness value, and the quenching depth value decreases by the preset quenching depth value; the second laser power is obtained by reducing the preset power based on the laser power used to quench the thread surface corresponding to the previous preset rotation angle.

5. The thread laser hardening method according to claim 1, characterized in that, The preset power is determined based on the preset hardness value and the preset quenching depth value.

6. A thread laser quenching device, characterized in that, The apparatus used in the thread laser hardening method according to any one of claims 1-5 includes: The data acquisition and thread start point confirmation module is used to acquire the initial hardness value and target hardness value of the threaded workpiece to be quenched and to determine the thread start point of the threaded workpiece to be quenched. The termination position and turning position confirmation module is used to determine the first turning position, the second turning position and the termination position of the threaded workpiece to be quenched based on the thread starting point; the first turning position is the position corresponding to the target angle of rotation of the threaded workpiece to be quenched from the thread starting point, and the second turning position is the position corresponding to the target angle of rotation of the threaded workpiece to be quenched in the opposite direction from the termination position. The quenching module is used to quench the thread surface of the threaded workpiece to be quenched, so that the hardness value of the first thread surface increases from the initial hardness value to the target hardness value; and the hardness value of the second thread surface decreases from the target hardness value to the initial hardness value; the first thread surface is the thread surface corresponding to the thread starting point to the first turning position, and the second thread surface is the thread surface corresponding to the thread ending position from the second turning position to the ending position.

7. A thread laser quenching device, characterized in that, The equipment used in the thread laser hardening method according to any one of claims 1-5 includes: A communication unit / communication interface is used to acquire the initial hardness value and target hardness value of the threaded workpiece to be quenched and to determine the thread start point of the threaded workpiece to be quenched. The processing unit / processor is used to determine the first turning position, the second turning position, and the termination position of the threaded workpiece to be quenched based on the thread starting point; the first turning position is the position corresponding to the target angle of rotation of the threaded workpiece to be quenched from the thread starting point, and the second turning position is the position corresponding to the target angle of rotation of the threaded workpiece to be quenched in the opposite direction from the termination position. The thread surface of the workpiece to be quenched is subjected to quenching treatment, so that the hardness value of the first thread surface increases from the initial hardness value to the target hardness value; and the hardness value of the second thread surface decreases from the target hardness value to the initial hardness value; the first thread surface is the thread surface corresponding to the thread starting point to the first turning position, and the second thread surface is the thread surface corresponding to the thread ending position from the second turning position to the ending position.

8. A computer storage medium, characterized in that, The computer storage medium stores instructions that, when executed, implement the thread laser quenching method according to any one of claims 1 to 5.

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