Intelligent heat treatment production line system and production method for titanium alloy fasteners for aviation

Abstract

The invention relates to an intelligent heat treatment production line system and a production method for titanium alloy fasteners for aviation, and the system comprises a heat treatment central control room, an intelligent inventory subsystem, and a workpiece transmission subsystem, solid solution water quenching treatment equipment, a cleaning and drying device, automatic screening equipment, an automatic straightening machine, vacuum aging equipment and surface treatment equipment which are arranged in sequence, according to the invention, a flexible manufacturing production line is adopted, an independent processing process is automatically processed, and an intelligent inventory subsystem, a workpiece transmission subsystem, solid solution water quenching treatment equipment, a cleaning and drying device, automatic screening equipment, an automatic straightening machine, vacuum aging equipment and surface treatment equipment are organically combined together; solution treatment, straightening, aging and oxide layer removal of the fastener are completed, ordered and continuous transfer of the fastener is formed, intelligent production is achieved, and the heat treatment production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat treatment, and particularly to an intelligent heat treatment production line system and production method for titanium alloy fasteners used in aviation. Background Art

[0002] Heat treatment refers to a metal hot working process in which metal materials are heated, held at a certain temperature, and then cooled in the solid state to change the chemical composition and structure on the surface or inside of the materials, so as to obtain the required properties.

[0003] After the titanium alloy fasteners are processed, in order to enhance the strength of the comprehensive performance of the fasteners, heat treatment is generally required. When heat-treating the titanium alloy fasteners, it is necessary to first perform solution treatment on the fasteners, and then wash, dry and blow-dry the solution-treated fasteners, transfer them to a vacuum aging device, and then perform surface treatment on the fasteners after aging treatment. Especially after solution treatment, workpieces with a large aspect ratio will be deformed and need to be straightened, and then aging treatment is carried out. After aging, it is necessary to remove the oxide layer on the surface of the workpiece. Each processing device is single, and the processing function blocks are independent and discontinuous, and manual participation is required. Often, a large amount of manpower, time, effort and resources are required to participate in the operation and transfer of each processing unit, thus affecting the continuity of the heat treatment process and reducing the production efficiency. The intelligent production line technology can support the automatic operation of the production line, thereby shortening the production time and reducing manual supervision.

[0004] Therefore, based on the experience and practice of being engaged in the relevant industry for many years, the inventor of the present invention proposes an intelligent heat treatment production line system and production method for titanium alloy fasteners used in aviation to overcome the defects of the prior art. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent heat treatment production line system and production method for titanium alloy fasteners used in aviation. By adopting a flexible manufacturing production line, the separate processing procedures are automatically processed. The intelligent inventory subsystem, workpiece transfer subsystem, solution quenching treatment equipment, cleaning and drying device, automatic screening equipment, automatic straightening machine, vacuum aging equipment, and surface treatment equipment are organically combined together to complete the solution treatment, straightening, aging, and removal of the oxide layer of the fasteners, form an orderly and continuous transfer of the fasteners, realize intelligent production, and improve the heat treatment production efficiency.

[0006] The object of the present invention is achieved as follows. An intelligent heat treatment production line system for aviation titanium alloy fasteners includes a heat treatment central control room, an intelligent inventory subsystem, and a workpiece transfer subsystem, a solution quenching treatment device, a cleaning and drying device, an automatic screening device, an automatic straightening machine, a vacuum aging device, and a surface treatment device arranged in sequence. The heat treatment central control room is used for centralized control of heat treatment, and the intelligent inventory subsystem is used for intelligent storage of fasteners; the workpiece transfer subsystem is used to transfer the fasteners to be processed from the intelligent inventory subsystem to the solution quenching treatment device, and the solution quenching treatment device is used for solution quenching treatment of fasteners; the cleaning and drying device is used for cleaning and drying the fasteners after solution quenching treatment, the automatic screening device is used for screening the fasteners after cleaning and drying, the fasteners with qualified straightness enter the vacuum aging device, and the fasteners with out-of-tolerance straightness enter the automatic straightening machine, and the automatic straightening machine straightens the fasteners with out-of-tolerance straightness; the vacuum aging device performs aging treatment on the fasteners with qualified straightness; the surface treatment device performs surface treatment on the fasteners after aging treatment to remove the oxide layer.

[0007] In a preferred embodiment of the present invention, the intelligent inventory subsystem includes an intelligent warehouse, in which fastener storage boxes are placed, and material information electronic tags are arranged on the fastener storage boxes; an intelligent manipulator is also arranged in the intelligent warehouse, and the intelligent manipulator is used to identify and grab the fastener storage boxes to be processed and place them on the workpiece transfer subsystem.

[0008] In a preferred embodiment of the present invention, the workpiece transfer subsystem includes an automatic guided vehicle or a conveying track.

[0009] In a preferred embodiment of the present invention, a feeding device is arranged at the inlet of the solution quenching treatment device, and the workpiece transfer subsystem conveys the fasteners to be processed from the intelligent inventory subsystem to the feeding device; the solution quenching treatment device includes a solution heat treatment furnace in an atmosphere protection and high-temperature state, a cooling device is arranged at the outlet of the solution heat treatment furnace, and the cooling device is used for quenching and cooling the fasteners after solution heat treatment; a conveying chain mesh belt is arranged at the outlet of the cooling device; the feeding device batches the fasteners by weight and adds them to the solution heat treatment furnace, and the conveying chain mesh belt conveys the fasteners after solution quenching to the cleaning and drying device.

[0010] In a preferred embodiment of the present invention, the cleaning and drying device includes a flushing structure and a drying structure. A cleaning chain is movably arranged in the cleaning and drying device, and the fasteners after solution quenching are carried on the cleaning chain. The flushing structure is used to spray high-pressure flushing liquid to flush the fasteners on the chain, and the drying structure is used to dry the fasteners after flushing.

[0011] In a preferred embodiment of the present invention, the automatic screening device includes an image measuring device. A screening conveyor belt is arranged inside the automatic screening device, and the image measuring device is used to identify the degree of deformation of the fasteners on the screening conveyor belt. The outlet of the screening conveyor belt is divided into a qualified product conveyor belt and a non-conforming product conveyor belt. The qualified product conveyor belt is connected to the vacuum aging device, and the non-conforming product conveyor belt is connected to the automatic straightening machine.

[0012] In a preferred embodiment of the present invention, the automatic straightening machine includes a vibrating bowl and a rolling straightening structure. The vibrating bowl is used to convey and feed the fasteners with out-of-tolerance straightness onto the rolling straightening structure, and the rolling straightening structure is used to roll and straighten the fasteners with out-of-tolerance straightness.

[0013] In a preferred embodiment of the present invention, the vacuum aging device includes an aging tooling and a vacuum furnace. An aging furnace loading manipulator is arranged at the inlet of the vacuum furnace. The aging tooling is used to receive the fasteners with qualified straightness after solution heat treatment and quenching, and the aging furnace loading manipulator is used to grasp the aging tooling.

[0014] In a preferred embodiment of the present invention, a vibrating conveyor belt is arranged inside the surface treatment device, and the vibrating conveyor belt carries the fasteners after aging treatment. A spray head is arranged above the vibrating conveyor belt inside the surface treatment device, and the spray head is used to spray acid solution.

[0015] The object of the present invention can also be achieved in this way. An intelligent heat treatment production method for aviation titanium alloy fasteners includes: assembling the aforementioned intelligent heat treatment production line system for aviation titanium alloy fasteners; controlling, through the heat treatment central control room, the intelligent inventory subsystem to place the fasteners to be processed on the workpiece transfer subsystem. The workpiece transfer subsystem transfers the fasteners to be processed to the solution heat treatment and quenching device. The heat treatment central control room controls the solution heat treatment and quenching device to complete the solution heat treatment and quenching of the fasteners at the set temperature and time. The fasteners after solution heat treatment and quenching enter the automatic screening device after cooling and being cleaned and dried by the cleaning and drying device. The automatic screening device screens the fasteners by identifying the degree of deformation of the fasteners. The fasteners with out-of-tolerance straightness enter the automatic straightening machine, and the automatic straightening machine straightens the fasteners with out-of-tolerance straightness. The straightened fasteners are returned for re-cleaning, drying, and automatic screening. The fasteners with qualified straightness enter the vacuum aging device for aging treatment. The fasteners after aging treatment enter the surface treatment device for surface treatment to remove the oxide layer. The fasteners after surface treatment are rinsed, dried, and then packed and stored.

[0016] As described above, the intelligent heat treatment production line system and production method for aviation titanium alloy fasteners of the present invention have the following beneficial effects:

[0017] The present invention provides an intelligent heat treatment production line system for aerospace titanium alloy fasteners. By adopting a flexible manufacturing production line, it realizes automatic processing of individual processing procedures, and organically combines an intelligent inventory subsystem, a workpiece transfer subsystem, a solution water quenching treatment device, a cleaning and drying device, an automatic screening device, an automatic straightening machine, a vacuum aging device, and a surface treatment device to complete the solution, straightening, aging, and removal of the oxide layer of the fasteners, forming an orderly and continuous transfer of the fasteners, realizing intelligent production, improving the heat treatment production efficiency, and at the same time, it can also orderly perform heat treatment on small-batch and multi-variety workpiece types on the same production line;

[0018] The present invention can save the on-site operation manpower in the production workshop, is beneficial to improving the safety of the production site, and can reduce the production labor cost;

[0019] The present invention adopts an intelligent heat treatment production line, which can improve the safety performance and reduce the risk of operation accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following drawings are only intended to illustrate and explain the present invention schematically, and do not limit the scope of the present invention.

[0021] Among them:

[0022] Figure 1 : is a schematic diagram of the intelligent heat treatment production line system for aerospace titanium alloy fasteners of the present invention.

[0023] In the figure:

[0024] 1. Intelligent inventory subsystem; 2. Loading device; 3. Solution water quenching treatment device; 4. Cooling device; 5. Cleaning and drying device; 6. Automatic screening device; 7. Belt conveyor for out-of-tolerance products; 8. Belt conveyor for qualified products; 9. Automatic straightening machine; 10. Vacuum aging device; 11. Surface treatment device; 12. Central control room for heat treatment. DETAILED DESCRIPTION OF THE INVENTION

[0025] In order to have a clearer understanding of the technical features, objectives, and effects of the present invention, the specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0026] The specific embodiments of the present invention described herein are only for the purpose of explaining the present invention and should not be construed as limiting the present invention in any way. Under the teachings of the present invention, those skilled in the art can conceive of any possible variations based on the present invention, and all of these should be regarded as falling within the scope of the present invention. It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the communication inside two elements. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only embodiment.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items.

[0028] As Figure 1 shown, the present invention provides an intelligent heat treatment production line system for aviation titanium alloy fasteners, including a heat treatment central control room 12, an intelligent inventory subsystem 1, and a workpiece transfer subsystem, a solution water quenching treatment device 3, a cleaning and drying device 5, an automatic screening device 6, an automatic straightening machine 9, a vacuum aging device 10, and a surface treatment device 11 arranged in sequence. Each part is equipped with a PLC unit (digital control unit);

[0029] The heat treatment central control room 12 is used to centrally control the heat treatment and is electrically connected to other parts; the PLC units of each part collect data, and the heat treatment central control room 12 conducts centralized monitoring and management. An industrial control computer is selected to communicate with the PLC (Programmable Logic Controller) system through the TCP / IP industrial Ethernet to implement centralized control. Through the industrial control configuration software, the changes in the process parameters of the entire production line, the operation of the equipment, the occurrence of faults, etc. are monitored in real time, and at the same time, it is responsible for printing daily reports, accident printing, and data recording, etc.

[0030] The intelligent inventory subsystem 1 is used for the intelligent storage of fasteners; the workpiece transfer subsystem is used to transfer the fasteners to be processed from the intelligent inventory subsystem 1 to the solution heat treatment and quenching equipment 3, and the solution heat treatment and quenching equipment 3 is used for the solution heat treatment and quenching of fasteners; the cleaning and drying device 5 is used for cleaning and drying the fasteners after solution heat treatment and quenching, the automatic screening equipment 6 is used for screening the fasteners after cleaning and drying, the fasteners with qualified straightness enter the vacuum aging equipment 10, the fasteners with out-of-tolerance straightness enter the automatic straightening machine 9, and the automatic straightening machine 9 straightens the fasteners with out-of-tolerance straightness; the vacuum aging equipment 10 performs aging treatment on the fasteners with qualified straightness; the surface treatment equipment 11 performs surface treatment on the fasteners after aging treatment to remove the oxide layer.

[0031] The present invention provides an intelligent heat treatment production line system for aerospace titanium alloy fasteners. By adopting a flexible manufacturing production line, the separate processing procedures are automatically processed. The intelligent inventory subsystem 1, the workpiece transfer subsystem, the solution heat treatment and quenching equipment 3, the cleaning and drying device 5, the automatic screening equipment 6, the automatic straightening machine 9, the vacuum aging equipment 10, and the surface treatment equipment 11 are organically combined together to complete the solution, straightening, aging, and oxide layer removal of fasteners, forming an orderly and continuous transfer of fasteners, realizing intelligent production, improving the heat treatment production efficiency, and at the same time, it can also realize the orderly heat treatment of small batches and multiple varieties of workpiece types on the same production line.

[0032] The present invention can save the on-site operation manpower in the production workshop, is beneficial to improving the safety of the production site, and can reduce the production labor cost.

[0033] The intelligent heat treatment production line adopted by the present invention can improve the safety performance and reduce the risk of operation accidents.

[0034] Furthermore, the intelligent inventory subsystem 1 includes an intelligent warehouse. Fastener storage boxes are placed in the intelligent warehouse according to rules; material information electronic tags (identification codes, including information such as fastener raw materials, batch numbers, specifications, quantities, weights, etc.) are set on the fastener storage boxes; an intelligent manipulator is also set in the intelligent warehouse, and the intelligent manipulator is used to identify and grab the fastener storage boxes to be processed and place them on the workpiece transfer subsystem.

[0035] When heat treatment needs to be performed on fasteners, an instruction is issued through the heat treatment central control room 12, and the intelligent manipulator identifies and grabs the fastener storage boxes to be processed and places them on the workpiece transfer subsystem.

[0036] Furthermore, the workpiece transfer subsystem includes an automatic guided vehicle (AGV cart) or a conveying track.

[0037] The Automatic Guided Vehicle (AGV) identifies various types and specifications of fasteners by scanning codes, and transfers the fasteners to be processed to the solution heat treatment and quenching equipment 3 according to instructions.

[0038] Furthermore, as Figure 1 shown, a feeding device 2 is arranged at the entrance of the solution heat treatment and quenching equipment 3. The workpiece transmission subsystem conveys the fasteners to be processed from the intelligent inventory subsystem 1 to the feeding device 2; the solution heat treatment and quenching equipment 3 includes a solution heat treatment furnace in an atmosphere protection and high-temperature state, and the fasteners vibrate continuously and move forward in the furnace; at a set temperature (850 - 980 °C) and time (20 - 60 min), the solution heat treatment is completed; a cooling device 4 is arranged at the outlet of the solution heat treatment furnace. The cooling device 4 is used to quench and cool the fasteners after solution heat treatment. The cooling device 4 is equipped with a quenching cooling medium to cool the workpieces after the solution heat preservation process. In a specific embodiment, the cooling is carried out at 0 - 15 °C; a conveying chain mesh belt is arranged at the outlet of the cooling device 4; the feeding device 2 batches the fasteners by weight and adds them to the solution heat treatment furnace, and the conveying chain mesh belt conveys the fasteners after solution heat treatment and quenching to the cleaning and drying device 5.

[0039] In a specific embodiment, the solution heat treatment and quenching equipment 3 includes an automatic bucket feeding system, a mechanical pump vacuum pumping system and a vacuum measurement system, a heating furnace system and a temperature control and measurement system, a vibration system, an argon filling system, a water tank, an automatic discharging system, various control, adjustment and automatic recording systems, etc.

[0040] Furthermore, the cleaning and drying device 5 includes a flushing structure and a drying structure. A cleaning chain is movably arranged inside the cleaning and drying device 5, and the fasteners after solution heat treatment and quenching are carried on the cleaning chain. The flushing structure is used to spray high-pressure flushing liquid to flush the fasteners on the chain, and the drying structure is used to dry the fasteners after flushing.

[0041] The flushing structure quickly sprays liquid (clean water) at a high pressure of 0.3 - 0.4 MPa to flush the impurities and oil stains on the fasteners after solution heat treatment; the drying structure realizes air blowing and drying the fasteners after flushing at a high temperature of 80 - 100 °C. The moving speed of the cleaning chain is 0.2 - 1 m / min.

[0042] Furthermore, as Figure 1 shown, the automatic screening equipment 6 includes an image measuring device. A screening conveyor belt is arranged inside the automatic screening equipment 6. The image measuring device is used to identify the deformation degree of the fasteners on the screening conveyor belt; the outlet of the screening conveyor belt is divided into a qualified product conveyor belt 8 and a non-conforming product conveyor belt 7. The qualified product conveyor belt 8 is connected to the vacuum aging equipment 10, and the non-conforming product conveyor belt 7 is connected to the automatic straightening machine 9.

[0043] In a specific embodiment, fasteners with a straightness < 0.04 mm are directly loaded into the aging tooling of the vacuum aging equipment 10 and enter the vacuum aging equipment 10 (aging zone) to wait for aging treatment; workpieces with a straightness ≥ 0.04 m enter the automatic straightening machine 9 (straightening zone).

[0044] Furthermore, the automatic straightening machine 9 includes a vibrating bowl and a rolling straightening structure. The vibrating bowl is used to convey and feed fasteners with out-of-tolerance straightness to the rolling straightening structure, and the rolling straightening structure is used to roll and straighten fasteners with out-of-tolerance straightness. The feeding method of the automatic straightening machine 9 is conveyor by the vibrating bowl. Using the rolling straightening technology, each fastener with out-of-tolerance straightness is straightened one by one; after the workpiece is straightened, it goes through the cleaning and screening steps again and enters the aging zone.

[0045] Furthermore, the vacuum aging equipment 10 includes an aging tooling and a vacuum furnace. An aging furnace loading manipulator is arranged at the inlet of the vacuum furnace; the aging tooling is used to receive fasteners with qualified straightness after solutionizing and water quenching, and the aging furnace loading manipulator is used to grasp the aging tooling.

[0046] During aging treatment, the vacuum furnace is evacuated to 10 -3 Pa, and then heating starts. The temperature is raised at a rate not higher than 200 °C / h to prevent the workpiece from deforming due to too fast heating. After rising to 500 - 570 °C, it is held for 3 - 6 hours, then argon is filled until the pressure inside and outside the furnace is balanced, and then a fan is turned on inside the furnace to cool to room temperature at a rate of 8 - 10 °C / min, and the workpiece is taken out of the furnace.

[0047] Furthermore, a vibrating conveyor belt is arranged inside the surface treatment equipment 11, and the aging-treated fasteners are carried on the vibrating conveyor belt; a sprinkler head is arranged above the vibrating conveyor belt inside the surface treatment equipment 11, and the sprinkler head is used to spray acid solution.

[0048] The aging heat-treated fasteners are poured onto the vibrating conveyor belt made of polytetrafluoroethylene by a manipulator. The vibrating conveyor belt enters the inside of the surface treatment equipment 11, and there is a sprinkler head above it, which can make the acid solution cover and spray on the vibrating conveyor belt. The moving speed is adjustable from 0.1 - 0.5 m / min, so that the surface of the fasteners is clean and bright, and then it goes through hot water rinsing and drying.

[0049] Requirements for the acid pickling solution ratio: nitric acid (65% - 68%) 400 - 500 mL / L, hydrofluoric acid (40%) 15 - 30 mL / L, with the balance being water. The temperature of the acid solution is 30 - 40 °C, and the acid pickling time is 3 - 8 minutes.

[0050] The present invention also provides an intelligent heat treatment production method for titanium alloy fasteners for aviation, including: assembling the aforementioned intelligent heat treatment production line system for titanium alloy fasteners for aviation; controlling, through the heat treatment central control room 12, the intelligent inventory subsystem 1 to place the fasteners to be processed on the workpiece transfer subsystem, and the workpiece transfer subsystem transfers the fasteners to be processed to the solution quenching treatment equipment 3.

[0051] The heat treatment central control room 12 controls the solution quenching treatment equipment 3 to complete the solution quenching of the fasteners at the set temperature and time. The set temperature is 850 - 980 °C, and the set time is 20 - 60 min, thus completing the solution heat treatment.

[0052] After solution quenching, the fasteners are cooled (cooled at 0 - 15 °C) and then enter the automatic screening equipment 6 after being cleaned and dried by the cleaning and drying device 5. During cleaning and drying, the liquid (clean water) is quickly ejected at a high pressure of 0.3 - 0.4 MPa to wash away the impurities and oil stains after solution of the fasteners; then it is dried by blowing at a high temperature of 80 - 100 °C.

[0053] The automatic screening equipment 6 screens the fasteners by identifying the degree of deformation of the fasteners. The straightness < 0.04 mm is qualified, and the straightness ≥ 0.04 mm is out of tolerance (unqualified).

[0054] The fasteners with out-of-tolerance straightness enter the automatic straightening machine 9, and the automatic straightening machine 9 straightens the fasteners with out-of-tolerance straightness. After straightening, the fasteners are returned for re-cleaning, drying, and automatic screening; the fasteners with qualified straightness enter the vacuum aging equipment 10 for aging treatment; the vacuum furnace evacuates to 10 -3 Pa, starts heating, and the temperature is increased at a rate not higher than 200 °C / h to prevent the workpiece from deforming due to too fast heating. After rising to 500 - 570 °C, it is kept warm for 3 - 6 hours, then argon is filled until the pressure inside and outside the furnace is balanced, and then the fan in the furnace cools it to room temperature at 8 - 10 °C / min.

[0055] After aging treatment, the fasteners enter the surface treatment equipment 11 for surface treatment to remove the oxide layer; the heat-treated fasteners are poured onto the vibrating conveyor belt made of polytetrafluoroethylene material by a manipulator. The conveyor belt enters the interior of the surface treatment equipment, and there is a sprinkler head above, which can make the acid solution cover and spray on the conveyor belt. The moving speed is adjustable at 0.1 - 0.5 m / min to make the surface of the fasteners clean and bright.

[0056] After the surface-treated fasteners are rinsed (rinsed with hot water) and dried, they are packed and stored, and then transported back to the warehouse.

[0057] Example 1: The heat treatment process for 8 * 40 titanium alloy fasteners is solution quenching at 920 - 980 °C + holding for 1 hour, cleaning and drying, screening, straightening, aging at 480 - 550 °C + holding for 3 - 5 hours, and surface treatment.

[0058] Example 2: The heat treatment process for 5*20 titanium alloy fasteners is solution quenching at 920 - 980°C + holding for 1 hour, cleaning and drying, aging at 500 - 570°C + holding for 3 - 5 hours, and surface treatment. Screening and straightening are not required during the intermediate process.

[0059] As described above, the intelligent heat treatment production line system and production method for aerospace titanium alloy fasteners of the present invention have the following beneficial effects:

[0060] The present invention provides an intelligent heat treatment production line system for aerospace titanium alloy fasteners. By adopting a flexible manufacturing production line, it realizes automatic processing of individual processing procedures, and organically combines an intelligent inventory subsystem, a workpiece transfer subsystem, a solution water quenching treatment device, a cleaning and drying device, an automatic screening device, an automatic straightening machine, a vacuum aging device, and a surface treatment device to complete the solution, straightening, aging, and removal of the oxide layer of the fasteners, forming an orderly and continuous transfer of the fasteners, realizing intelligent production, improving the heat treatment production efficiency, and at the same time, it can also perform orderly heat treatment on small batches and multiple varieties of workpiece types on the same production line;

[0061] The present invention can save the on-site operation manpower in the production workshop, is beneficial to improving the safety of the production site, and can reduce the production labor cost;

[0062] The present invention adopts an intelligent heat treatment production line, which can improve the safety performance and reduce the risk of operating accidents.

[0063] The above are only illustrative specific embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention shall fall within the scope of protection of the present invention.

Claims

1. An intelligent heat treatment production line system for titanium alloy fasteners used in aviation, characterized in that, it includes a heat treatment central control room, an intelligent inventory subsystem, and a workpiece transfer subsystem, a solutionizing and water quenching treatment device, a cleaning and drying device, an automatic screening device, an automatic straightening machine, a vacuum aging device, and a surface treatment device arranged in sequence. The heat treatment central control room is used for centralized control of heat treatment, and the intelligent inventory subsystem is used for intelligent storage of fasteners; the workpiece transfer subsystem is used to transfer the fasteners to be processed from the intelligent inventory subsystem to the solutionizing and water quenching treatment device, and the solutionizing and water quenching treatment device is used for solutionizing and water quenching treatment of fasteners; the cleaning and drying device is used for cleaning and drying the fasteners after solutionizing and water quenching treatment. The automatic screening device is used for screening the fasteners after cleaning and drying. The fasteners with qualified straightness enter the vacuum aging device, and the fasteners with out-of-tolerance straightness enter the automatic straightening machine. The automatic straightening machine straightens the fasteners with out-of-tolerance straightness; the vacuum aging device performs aging treatment on the fasteners with qualified straightness; the surface treatment device performs surface treatment on the fasteners after aging treatment to remove the oxide layer.

2. The intelligent heat treatment production line system for titanium alloy fasteners used in aviation according to claim 1, characterized in that, the intelligent inventory subsystem includes an intelligent warehouse. Fastener storage boxes are placed in the intelligent warehouse, and material information electronic tags are set on the fastener storage boxes; an intelligent manipulator is also arranged in the intelligent warehouse. The intelligent manipulator is used to identify and grab the fastener storage boxes to be processed and place them on the workpiece transfer subsystem.

3. The intelligent heat treatment production line system for titanium alloy fasteners used in aviation according to claim 1, characterized in that, the workpiece transfer subsystem includes an automatic guided vehicle or a conveying track.

4. The intelligent heat treatment production line system for titanium alloy fasteners used in aviation according to claim 1, characterized in that, a feeding device is arranged at the entrance of the solutionizing and water quenching treatment device. The workpiece transfer subsystem conveys the fasteners to be processed from the intelligent inventory subsystem to the feeding device; the solutionizing and water quenching treatment device includes a solutionizing heat treatment furnace in an atmosphere protection and high-temperature state. A cooling device is arranged at the outlet of the solutionizing heat treatment furnace. The cooling device is used for quenching and cooling the fasteners after solutionizing heat treatment; a conveying chain mesh belt is arranged at the outlet of the cooling device; the feeding device batches the fasteners by weight and adds them to the solutionizing heat treatment furnace, and the conveying chain mesh belt conveys the fasteners after solutionizing and water quenching to the cleaning and drying device.

5. The intelligent heat treatment production line system for titanium alloy fasteners used in aviation according to claim 1, characterized in that, the cleaning and drying device includes a flushing structure and a drying structure. A cleaning chain is movably arranged through the cleaning and drying device. The fasteners after solutionizing and water quenching are carried on the cleaning chain. The flushing structure is used to spray high-pressure flushing liquid to flush the fasteners on the chain, and the drying structure is used to dry the flushed fasteners.

6. The intelligent heat treatment production line system for titanium alloy fasteners used in aviation according to claim 1, characterized in that, The automatic screening device includes an imaging measurement device. A screening conveyor belt is arranged inside the automatic screening device. The imaging measurement device is used to identify the degree of deformation of the fasteners on the screening conveyor belt. The outlet of the screening conveyor belt is divided into a qualified product conveyor belt and a non-conforming product conveyor belt. The qualified product conveyor belt is connected to the vacuum aging device, and the non-conforming product conveyor belt is connected to the automatic straightening machine.

7. The intelligent heat treatment production line system for titanium alloy fasteners for aviation as described in claim 1, characterized in that, the automatic straightening machine includes a vibrating bowl and a rolling straightening structure. The vibrating bowl is used to convey and feed the fasteners with out-of-tolerance straightness to the rolling straightening structure, and the rolling straightening structure is used to roll and straighten the fasteners with out-of-tolerance straightness.

8. The intelligent heat treatment production line system for titanium alloy fasteners for aviation as described in claim 1, characterized in that, the vacuum aging device includes an aging tooling and a vacuum furnace. An aging furnace loading manipulator is arranged at the inlet of the vacuum furnace. The aging tooling is used to receive the fasteners with qualified straightness after solution quenching, and the aging furnace loading manipulator is used to grasp the aging tooling.

9. The intelligent heat treatment production line system for titanium alloy fasteners for aviation as described in claim 1, characterized in that, a vibrating conveyor belt is arranged inside the surface treatment device. The vibrating conveyor belt bears the fasteners after aging treatment. Spraying nozzles are arranged above the vibrating conveyor belt inside the surface treatment device, and the spraying nozzles are used to spray acid solution.

10. An intelligent heat treatment production method for titanium alloy fasteners for aviation, characterized in that, it includes: assembling the intelligent heat treatment production line system for titanium alloy fasteners for aviation as described in any one of claims 1 to 9; controlling, through the heat treatment central control room, the intelligent inventory subsystem to place the fasteners to be processed on the workpiece transfer subsystem. The workpiece transfer subsystem transfers the fasteners to be processed to the solution quenching treatment device. The heat treatment central control room controls the solution quenching treatment device to complete the solution quenching of the fasteners at the set temperature and time. After solution quenching, the fasteners enter the automatic screening device after cooling and being cleaned and dried by the cleaning and drying device. The automatic screening device screens the fasteners by identifying the degree of deformation of the fasteners. The fasteners with out-of-tolerance straightness enter the automatic straightening machine. The automatic straightening machine straightens the fasteners with out-of-tolerance straightness, and the straightened fasteners return for re-cleaning, drying, and automatic screening. The fasteners with qualified straightness enter the vacuum aging device for aging treatment; the fasteners after aging treatment enter the surface treatment device for surface treatment to remove the oxide layer; the fasteners after surface treatment are rinsed, dried, and then packed and stored.

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