A processing device and a processing method for an aviation connector product

Abstract

The application provides a processing device and a processing method of an aviation joint product; the aviation joint product comprises a tee main body and a mounting seat arranged on the tee main body; the processing device comprises a lifting driving mechanism, an indexing positioning mechanism, a scrap collecting mechanism and a polishing mechanism. The processing device provided by the application is designed in a cooperative manner by integrating lifting driving, rotary indexing, closed collection and profiling polishing, thereby improving the polishing efficiency and consistency of the multi-port aviation joint product, forming a dynamic cleaning environment by the driving shaft and the collecting cover sealingly extending into the port, combining with negative pressure suction, effectively preventing the metal scraps generated during polishing from invading the product and polluting the surrounding area, and ensuring the synchronous and uniform processing of the port end face and the outer wall by means of the profiling polishing block, so that the processing quality and the clean reliability of the product are comprehensively ensured on the premise of realizing full-automatic and efficient operation.

Description

A processing apparatus and processing method for aviation connector products Technical Field

[0001] This invention relates to the field of aerospace component processing technology, and more specifically, to a processing apparatus and method for aerospace connector products. Background Technology

[0002] The content in this section only provides background information related to this invention and may not constitute prior art.

[0003] In the field of aviation equipment, there exists an aviation connector product 100 as shown in Figure 1. This aviation connector product 100 is a typical sensor base, comprising a three-way body 101 and a mounting base 102 disposed on the three-way body 101. The three ports of the three-way body 101 are all frustum-shaped and located within the same reference plane s; the mounting base 102 is disposed perpendicular to the reference plane s and is used to mount sensors and other accessories.

[0004] For this type of aviation connector product 100, the processing quality of the end faces and outer walls of each port on its tee body 101 is crucial, directly determining the sealing performance, flow field characteristics, and fatigue life of the connection. Any tiny burr may lead to medium leakage, pressure loss, or even become a crack initiation point under alternating loads, posing a serious threat to system safety.

[0005] Currently, deburring of the ports of such products mainly relies on manual precision grinding using handheld angle grinders and other grinding tools. This method is not only inefficient, but the quality also depends entirely on the experience and skill level of the workers, resulting in poor consistency of the final product. In addition, during the grinding process, metal shavings generated can easily enter the interior of the tee body 101 through the ground port, potentially causing contamination or even damage to the internal channels of the tee body 101. Summary of the Invention

[0006] In view of this, the first objective of the present invention is to provide a processing apparatus for aviation connector products, and in particular an apparatus capable of replacing manual labor to complete the port grinding of aviation connector products with high quality.

[0007] The second objective of this invention is to provide a processing method for processing aviation connector products using the aforementioned processing apparatus.

[0008] The objective of this invention is achieved through the following technical solution:

[0009] In a first aspect, the present invention provides a processing apparatus for an aviation connector product, the aviation connector product comprising a tee body and a mounting base disposed on the tee body, the tee body comprising three ports located in the same reference plane; the mounting base being disposed perpendicular to the reference plane;

[0010] The processing apparatus includes:

[0011] A lifting drive mechanism is used to output reciprocating motion along the vertical direction;

[0012] The indexing and positioning mechanism is connected to the output end of the lifting drive mechanism and includes an indexing motor and a positioning seat driven by the indexing motor; the positioning seat is connected to the mounting base and is used to enable the tee body to rotate about a horizontal axis perpendicular to the reference plane, so that each of the ports can face downwards in sequence.

[0013] The debris collection mechanism includes a collection hood and a negative pressure suction device communicating with the collection hood; the collection hood is located below the aviation connector product, and its top has an inlet and outlet for the downward-facing port to extend into the interior of the collection hood;

[0014] The polishing mechanism includes a drive shaft driven by a polishing motor and a contour polishing block fixedly disposed on the outer wall of the drive shaft; the top end of the drive shaft and the contour polishing block are both located inside the collection shroud; the shape of the contour polishing block matches the outer contour of the port; the outer diameter of the drive shaft matches the inner diameter of the port.

[0015] When the downward-facing port extends into the collection hood, the inner wall of the inlet and outlet forms a seal with the outer wall of the three-way body, the top end of the drive shaft extends into the port, and the contour grinding block simultaneously contacts the end face and outer wall of the port.

[0016] Optionally, the grinding motor is a hollow motor and has a first air supply channel; the drive shaft has a second air supply channel inside; one end of the second air supply channel is connected to the first air supply channel;

[0017] The outer wall of the section of the drive shaft that extends into the port is provided with an airflow hole; the airflow hole is connected to the second air supply channel and is used to introduce blocking gas into the port when the drive shaft rotates, so as to form a chip-blocking air curtain between the outer wall of the drive shaft and the inner wall of the port.

[0018] Optionally, the barrier gas is a cooled cryogenic gas.

[0019] Optionally, a flexible sealing element is provided at the inlet and outlet, surrounding the inner sidewall of the inlet and outlet; an air-filled cavity is formed between the flexible sealing element and the inner sidewall of the inlet and outlet, and an air inlet and outlet communicating with the air-filled cavity are provided on the collection cover;

[0020] When air is injected into the inflation chamber, the flexible seal can expand to form a tight seal with the outer wall of the three-way body.

[0021] Optionally, the mounting base is provided with mounting holes and a mounting channel communicating with the interior of the tee body;

[0022] The positioning seat is provided with a positioning screw that mates with the mounting hole, and a reinforcing column that can extend into the mounting channel; the outer wall of the reinforcing column matches the inner diameter of the mounting channel.

[0023] Optionally, an acoustic emission sensor, acoustically coupled to the tee body, is installed on the reinforcing post to detect the acoustic emission signal generated during the polishing of the port.

[0024] Optionally, the processing device for the aviation connector product further includes a control unit; the acoustic emission sensor and the grinding motor are both electrically connected to the control unit; the control unit is configured to adaptively adjust the operating parameters of the grinding motor based on the acoustic emission signal detected by the acoustic emission sensor.

[0025] Secondly, the present invention provides a method for processing aviation connector products, employing the aviation connector product processing apparatus as described above; the processing method includes:

[0026] Step S10. Fix the mounting base of the aviation connector product onto the positioning base;

[0027] Step S20. Control the indexing motor to drive the positioning seat to rotate so that one of the ports to be processed on the tee body faces downwards;

[0028] Step S30. Control the lifting drive mechanism to drive the indexing positioning mechanism to descend, so that the downward-facing port passes through the inlet and outlet and enters the inside of the collection cover, until the top of the drive shaft extends into the inside of the port, and the contour grinding block simultaneously contacts the end face and outer wall of the port;

[0029] Step S40. Control the grinding motor to drive the drive shaft to rotate, so as to simultaneously grind the end face and outer wall of the port through the contour grinding block; at the same time, start the negative pressure suction device to form a negative pressure inside the collection hood;

[0030] Step S50. After the polishing is completed, control the polishing motor to stop, and control the lifting drive mechanism to drive the indexing and positioning mechanism to rise, so that the polished port exits the collection cover;

[0031] Step S60. Repeat steps S20 to S50 to grind each port of the tee body in sequence until all ports are processed.

[0032] Optionally, step S40 further includes: the control unit adaptively adjusting the operating parameters of the grinding motor based on the acoustic emission signal detected in real time by the acoustic emission sensor.

[0033] Optionally, the control unit adaptively adjusts the operating parameters of the grinding motor, including:

[0034] Step S401. Perform time-frequency analysis on the acoustic emission signal and extract the signal energy E of the preset characteristic frequency band;

[0035] Step S402. Compare the signal energy E with a preset first energy threshold E - th1 and the second energy threshold E - Compare th2 to determine the current polishing status; where E - th1>E - th2;

[0036] Step S403. Based on the current grinding state, dynamically control the speed of the grinding motor according to the following conditions:

[0037] When E>E - When th1 is reached, it is determined that the burr removal is in a high-efficiency stage, and the grinding motor is controlled to run at a constant first speed N1.

[0038] When E - th2<E≤E - At time th1, it is determined that the surface finishing stage has begun, and the polishing motor is controlled to switch to a constant second speed N2; where N2 < N1.

[0039] Step S404. When the signal energy E remains below the second energy threshold E - When th2 reaches the preset time T, the port is determined to be polished.

[0040] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects:

[0041] The processing device provided by this invention, through a synergistic design integrating lifting drive, rotation indexing, sealed collection, and contour grinding, improves the efficiency and consistency of multi-port grinding of aviation connector products. At the same time, it utilizes the dynamic cleaning environment formed by the drive shaft extending into the port and the sealed collection cover, combined with negative pressure suction, to effectively prevent metal debris generated during grinding from entering the product interior and contaminating the surrounding area. Furthermore, the contour grinding block ensures synchronous and uniform processing of the port end face and outer wall. Thus, under the premise of achieving fully automatic and efficient operation, it comprehensively guarantees the processing quality and cleanliness reliability of the product. Attached Figure Description

[0042] Figure 1 is a structural schematic diagram of an aviation connector product known in the prior art;

[0043] Figure 2 is a schematic diagram of the processing apparatus provided in an embodiment of the present invention;

[0044] Figure 3 is a reference diagram of processing the first port on the aviation connector product shown in Figure 1 using the processing device shown in Figure 2;

[0045] Figure 4 is a cross-sectional view of Figure 3;

[0046] Figure 5 is a partial structural schematic diagram of the grinding mechanism provided in an embodiment of the present invention;

[0047] Figure 6 is a magnified view of the local structure at point A in Figure 4;

[0048] Figure 7 is a magnified view of the local structure at point B in Figure 6.

[0049] Icons: 100-Aerospace connector product, 101-Tee body, 102-Mounting base, 103-First port, 104-Second port, 105-Third port, 106-Mounting hole, 107-Mounting channel, 10-Lifting drive mechanism, 11-Lifting motor, 12-Lifting screw, 13-Guide column, 14-Lifting seat, 20-Indexing positioning mechanism, 21-Indexing motor, 22-Positioning seat, 23-Positioning screw, 24-Reinforcing column, 30-Debris collection mechanism, 31-Collection cover, 311-Air extraction port, 32-Inlet / outlet, 33-Flexible seal, 34-Inflation chamber, 35-Air inlet / outlet, 40-Grinding mechanism, 41-Grinding motor, 411-First air supply channel, 42-Drive shaft, 421-Second air supply channel, 422-Airflow hole, 43-Contouring grinding block, 50-Acoustic emission sensor, 60-Wire threading channel. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments. The same reference numerals in the accompanying drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the described embodiments of this invention without creative effort are within the scope of protection of this invention.

[0051] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of protection of this invention may have fewer components, other components not shown in the drawings, different components, components with different arrangements, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0052] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components.

[0053] Example 1

[0054] Please refer to Figures 1 to 7. Embodiment 1 of the present invention provides a processing apparatus for an aviation connector product 100, and in particular an apparatus capable of high-quality polishing of the port on the tee body 101 of the aviation connector product 100.

[0055] As shown in Figure 1, the aviation connector product 100 includes a tee body 101 and a mounting base 102 disposed on the tee body 101. The three ports of the tee body 101 are located in the same reference plane s, namely the first port 103, the second port 104, and the third port 105. The first port 103 and the second port 104 are on the same straight line, and the third port 105 is located at the exact center between the first port 103 and the second port 104.

[0056] Mounting base 102 is set perpendicular to the reference plane s and is in the same plane perpendicular to the reference plane s as the third port 105. Mounting base 102 is provided with a plurality of mounting holes 106 for mounting the entire aviation connector product 100 to a predetermined position, and mounting channel 107 communicating with the interior of the tee body 101.

[0057] In Embodiment 1 of the present invention, the entire aviation connector product 100 can be regarded as a sensor base. In practical applications, the mounting base 102 is suitable for mounting monitoring sensors (such as flow sensors, pressure sensors, etc.), and the detection end of the monitoring sensor is suitable for extending into the interior of the tee body 101 through the mounting channel 107 to realize the monitoring of corresponding parameters (such as flow rate, pressure).

[0058] To polish multiple ports on the aviation connector product 100 with the above structure, as shown in FIG2, the processing device includes a lifting drive mechanism 10, an indexing and positioning mechanism 20, a debris collection mechanism 30, and a polishing mechanism 40.

[0059] The lifting drive mechanism 10 is used to output reciprocating motion in the vertical direction so that it can drive the indexing and positioning mechanism 20 to move vertically.

[0060] Preferably, the lifting drive mechanism 10 can be a linear screw drive mechanism, including a lifting motor 11, a lifting screw 12 driven by the lifting motor 11, a guide post 13 parallel to the lifting screw 12, and a lifting seat 14. The lifting motor 11 is fixedly installed. The lifting screw 12 extends vertically and passes through the lifting seat 14, and the lifting screw 12 is threadedly connected to the lifting seat 14. The guide post 13 passes through the lifting seat 14 and slides with it. When the lifting motor 11 drives the lifting screw 12 to rotate, based on the principle of threaded transmission, the lifting seat 14 can reciprocate vertically and serves as the output end of the lifting drive mechanism 10.

[0061] The indexing and positioning mechanism 20 is connected to the output end of the lifting drive mechanism 10, specifically the lifting seat 14, enabling it to reciprocate vertically under the drive of the lifting drive mechanism 10. The indexing and positioning mechanism 20 is mainly used for fixing the aviation connector product 100 and for indexing.

[0062] Referring to Figure 2, the indexing and positioning mechanism 20 includes an indexing motor 21 fixedly mounted on the lifting base 14, and a positioning base 22 driven by the indexing motor 21. The positioning base 22 can be connected to the mounting base 102 of the aviation connector product 100. Driven by the indexing motor 21, the positioning base 22 enables the tee body 101 to rotate about a horizontal axis perpendicular to the reference plane s, for example, about the axis of the mounting base 102, so that each port of the tee body 101 can face downwards in sequence.

[0063] The debris collection mechanism 30 includes a fixedly mounted collection hood 31 and a negative pressure suction device (e.g., a vacuum pump, not shown in the figure) communicating with the collection hood 31. Referring to Figures 2 to 4, the collection hood 31 is located below the aviation connector product 100 fixed on the positioning seat 22, and its top has an inlet / outlet 32 ​​for a downward-facing port to extend into the interior of the collection hood 31. In addition, the bottom of the collection hood 31 has an air extraction port 311 for communicating with the negative pressure suction device, as shown in Figure 6.

[0064] The polishing mechanism 40 includes a drive shaft 42 driven by a polishing motor 41, and a plurality of contour polishing blocks 43 fixedly disposed on the outer wall of the drive shaft 42. For example, FIG5 shows four contour polishing blocks 43 evenly distributed along its circumference on the drive shaft 42.

[0065] A grinding motor 41 is fixedly mounted below the collection cover 31 and is drivenly connected to the bottom end of a drive shaft 42. The top end of the drive shaft 42 passes through the bottom of the collection cover 31 and extends into the collection cover 31, with a bearing providing a rotational seal between the drive shaft 42 and the bottom of the collection cover 31. The axis of the drive shaft 42 is coaxial with the downward-facing port, and its outer diameter matches, for example, the inner diameter of the port. A contour grinding block 43 is located inside the collection cover 31, and its shape matches the outer contour of the port.

[0066] Referring to Figure 6, when the downward-facing port extends into the collection cover 31, the inner wall of the inlet / outlet 32 ​​forms a seal with the outer wall of the tee body 101, the top end of the drive shaft 42 extends into the port, and the contour grinding block 43 simultaneously contacts the end face and outer wall of the port.

[0067] According to Embodiment 1 of the present invention, the provided processing device can simultaneously grind the end face and outer wall of a single port of the tee body 101 in one operation to efficiently remove burrs, effectively collect metal chips generated during the grinding process, and effectively prevent metal chips from entering the interior of the tee body 101 and splashing to other non-grinding areas.

[0068] Specifically, when using this processing device, as shown in Figure 3 or Figure 4, the mounting base 102 of the aviation connector product 100 is first fixed to the positioning base 22; then, the indexing motor 21 is controlled to drive the positioning base 22 to rotate so that one of the ports to be processed on the tee body 101 faces downward and is aligned with the inlet and outlet 32 ​​on the top of the collection cover 31.

[0069] Subsequently, the lifting drive mechanism 10 is controlled to drive the indexing and positioning mechanism 20 to descend, so that the downward-facing port passes through the inlet and outlet 32 ​​and enters the inside of the collection cover 31, until the top of the drive shaft 42 extends into the inside of the port, and the contour grinding block 43 simultaneously contacts the end face and outer wall of the port.

[0070] Subsequently, the grinding motor 41 drives the drive shaft 42 to rotate, thereby causing the contour grinding block 43 to rotate around the port axis. This allows the contour grinding block 43 to simultaneously grind both the end face and outer wall of the port. Since the top of the drive shaft 42 extends into the port, it effectively prevents metal debris from entering the tee body 101 through the port. During the grinding process, a negative pressure suction device is simultaneously activated to create a negative pressure within the collection hood 31. This negative pressure suction device then removes the metal debris generated during grinding, achieving effective collection of the metal debris.

[0071] After the grinding of a single port is completed, the grinding motor 41 is stopped, and the lifting drive mechanism 10 drives the indexing and positioning mechanism 20 to rise, so that the ground port exits the collection cover 31. Afterwards, the grinding operations of the next two ports can be completed in the same manner until all ports are processed, and then the aviation connector product 100 can be removed from the positioning seat 22.

[0072] The processing device provided in Embodiment 1 of this invention effectively solves several problems in the precision grinding of multi-port components of existing aerospace connector products 100 through a synergistic design that integrates lifting drive, rotary indexing, sealed collection, and contour grinding. First, the indexing and positioning mechanism 20 achieves automatic and orderly alignment of multiple ports, significantly improving operational efficiency and consistency, and completely replacing inefficient manual operations. Second, the sealed cooperation between the drive shaft 42 extending into the port and the collection cover 31 creates a dynamic cleaning environment combining physical barriers and negative pressure suction in the grinding area. This effectively prevents metal debris from entering the product's internal flow channels and splashing into other non-grinding areas while efficiently removing burrs, ensuring the product's cleanliness and reliability. Furthermore, the precise matching of the contour grinding block 43 with the port's outer contour ensures synchronous and uniform processing of the end face and outer wall, significantly improving the overall quality of the port's sealing surface. This device is compact and highly automated, providing an efficient, reliable, and high-quality solution for the precision deburring of similar complex structural products.

[0073] In some possible embodiments, referring to Figures 4 and 6, the grinding motor 41 is a hollow motor with a first air supply channel 411 inside. The drive shaft 42 has a second air supply channel 421 inside. One end of the second air supply channel 421 communicates with the first air supply channel 411. The end of the first air supply channel 411 away from the second air supply channel 421 can be connected to an external air supply device (e.g., an air pump) via a rotary joint (not shown in the figures). The external air supply device is used to provide clean, dry barrier gas.

[0074] Specifically, the section of the drive shaft 42 that extends into the port, that is, the section of the drive shaft 42 near its top end, has several airflow holes 422 on its outer wall. These airflow holes 422 are distributed sequentially along the circumference of the drive shaft 42 and are all connected to the second air supply channel 421 inside the drive shaft 42. When the top end of the drive shaft 42 extends into the port, all airflow holes 422 are located inside the port.

[0075] During the grinding process, clean and dry blocking gas can be supplied to the first air supply channel 411 via an external air supply device. The blocking gas flows sequentially through the first air supply channel 411 and the second air supply channel 421, and is finally ejected from the airflow hole 422, allowing blocking gas to be introduced into the port as the drive shaft 42 rotates. Since the drive shaft 42 is in a state of continuous high-speed rotation during the grinding process, the blocking gas ejected by the airflow hole 422 can form a uniform and dynamic chip-blocking air curtain in the annular gap between the outer wall of the drive shaft 42 and the inner wall of the port. This chip-blocking air curtain can blow away metal debris that may fly into the annular gap and form a micro-positive pressure barrier, thereby further reducing the possibility of metal debris entering the interior of the tee body 101 through the annular gap between the drive shaft 42 and the inner wall of the port, and helping to blow the metal debris away from the port, so as to assist the aforementioned negative pressure suction device in achieving faster collection of metal debris.

[0076] In some possible embodiments, the blocking gas supplied by an external gas supply device is a cooled cryogenic gas, such as cooled cryogenic dry air or cryogenic nitrogen; wherein the temperature range of the cryogenic gas can be 5-15°C to prevent condensation due to excessively low temperatures. By using a cryogenic gas, on the one hand, the cryogenic gas has a higher density and more stable flow, which helps to form a denser and more uniform chip-blocking air curtain; on the other hand, the cryogenic gas can be used to actively cool the polishing area of ​​the port directly, thereby effectively suppressing the phenomenon of metal material micro-melting or chip adhesion caused by frictional heating during polishing (i.e., the phenomenon of metal chips adhering to the polishing area of ​​the port), thus helping to improve the polishing quality.

[0077] In some possible embodiments, referring to Figures 6 and 7, a flexible sealing element 33, such as a flexible sealing strip, is provided at the inlet / outlet 32, surrounding the inner wall of the inlet / outlet 32. An inflation cavity 34 is formed between the flexible sealing element 33 and the inner wall of the inlet / outlet 32. The collection cover 31 is provided with an air inlet / outlet 35 communicating with the inflation cavity 34, and the air inlet / outlet 35 is connected to an external gas pumping device (e.g., a bidirectional air pump, not shown in the figure).

[0078] Specifically, after the port to be processed extends into the collection shroud 31 through the inlet / outlet 32, air can be pumped into the inflation chamber 34 using an external gas pump. When air is pumped into the inflation chamber 34, the flexible seal 33 expands to form a tight seal with the outer wall of the tee body 101; conversely, when the air is pumped out of the inflation chamber 34 using an external gas pump, the flexible seal 33 compresses and resets. This design ensures a tight seal between the inlet / outlet 32 ​​and the outer wall of the tee body 101, while also facilitating smoother entry and exit of the port through the inlet / outlet 32, preventing excessive compression of the flexible seal 33 by the tee body 101 or the port, and extending the service life of the flexible seal 33. Thus, this dynamic sealing structure can automatically switch between reliable sealing and smooth disengagement in each processing cycle, ensuring the long-term stable operation of the debris collection mechanism 30.

[0079] In some possible embodiments, to achieve precise positioning and rapid assembly / disassembly of the aviation connector product 100, as shown in FIG2, the positioning seat 22 is provided with a plurality of positioning screws 23 corresponding one-to-one with and cooperating with the mounting holes 106, and a reinforcing post 24 that can extend into the mounting channel 107. In particular, the outer wall of the reinforcing post 24 matches the inner diameter of the mounting channel 107, for example, equal to the inner diameter of the mounting channel 107.

[0080] When actually installing the aviation connector product 100, first align the reinforcing post 24 and insert it into the mounting channel 107, ensuring that each positioning screw 23 passes through a mounting hole 106. Then, simply tighten the locking nut (not shown in the figure) onto each positioning screw 23 to reliably fix the aviation connector product 100. This design achieves circumferential positioning through the cooperation of the positioning screw 23 and the mounting hole 106, and utilizes the reinforcing post 24 inserted into the mounting channel 107 to provide central guidance and support, enabling the aviation connector product 100 to achieve quick and precise one-time alignment and locking, greatly improving assembly and disassembly efficiency. Simultaneously, the core supporting role of the reinforcing post 24 significantly enhances the overall rigidity of the product during the grinding process, effectively suppressing vibration and deformation, laying a stable technological foundation for high-precision, high-quality grinding of the connector.

[0081] In some possible embodiments, a transparent window (not shown in the figure) can be provided on the outer wall of the collection cover 31. Of course, the entire collection cover 31 can also be made of transparent material so as to facilitate real-time observation of the polishing process inside the collection cover 31.

[0082] In some possible embodiments, the contour grinding block 43 is detachably connected to the drive shaft 42 to facilitate easy replacement of the contour grinding block 43. For example, the contour grinding block 43 and the drive shaft 42 can be connected by means of bolt threads by providing threaded connection holes on both.

[0083] Example 2

[0084] Based on Example 1, Example 2 of the present invention provides another processing apparatus to realize online monitoring and adaptive control of the grinding process.

[0085] The purpose of introducing online monitoring and adaptive control is that, in actual production, the initial burr state of each port on different aerospace connector products 100 is not entirely consistent. Based on this, using fixed grinding time and parameters can easily lead to some ports being under-processed (with residual burrs) or over-processed (damaging the substrate and affecting dimensions). However, by monitoring the physical signals generated during the grinding process (such as acoustic emission signals) online and adjusting the process parameters accordingly in real time, the entire system can automatically adapt to the actual state of each port, thereby ensuring that each port achieves consistent and optimal processing quality as much as possible without human intervention.

[0086] Specifically, referring to FIG2, the processing apparatus provided in Embodiment 2 of the present invention may further include an acoustic emission sensor 50 and a control unit (not shown in the figure).

[0087] A highly sensitive acoustic emission sensor 50 is mounted at the end of the reinforcing post 24, that is, the end of the reinforcing post 24 furthest from the positioning seat 22, to detect acoustic emission signals generated during the polishing process. To ensure the effectiveness of the monitoring signal, as shown in FIG6, after the reinforcing post 24 extends into the mounting channel 107 on the mounting seat 102, the detection end of the acoustic emission sensor 50 is in rigid contact with the inner wall of the tee body 101 through a special acoustic coupling agent, thereby establishing a reliable acoustic coupling path between the acoustic emission sensor 50 and the tee body 101. This design ensures that the acoustic emission signal can be transmitted to the acoustic emission sensor 50 with the least possible loss.

[0088] Specifically, a wire channel 60 can be provided, with its starting point located on the outer wall of the positioning base 22 and its ending point located at the end of the reinforcing column 24, for leading out the signal line of the acoustic emission sensor 50.

[0089] Furthermore, both the acoustic emission sensor 50 and the grinding motor 41 described in Embodiment 1 are electrically connected to the control unit. The control unit is configured to adaptively adjust the operating parameters of the grinding motor 41 based on the acoustic emission signal detected by the acoustic emission sensor 50. Specifically, the operating parameter is the rotational speed of the grinding motor 41.

[0090] According to Embodiment 2 of the present invention, the principle of realizing online monitoring and adaptive control of the grinding process is as follows:

[0091] During the grinding of the ports by the contour grinding block 43, two main microscopic physical processes are involved: material fracture (burr removal) and friction and plastic deformation (surface finishing). The acoustic emission signals generated by these two processes have significantly different characteristics. Material fracture excites high-frequency, high-energy transient acoustic emission signals; while the acoustic emission signals generated by friction and plastic deformation are relatively flat and have lower energy. Therefore, the energy, frequency, and other characteristics of the acoustic emission signals are natural and sensitive indicators reflecting the current grinding stage (whether it is in the stage of efficient burr removal or has entered the stage of surface finishing).

[0092] Based on this principle, the control unit can execute the following adaptive control algorithm to control the speed of the grinding motor 41, thereby achieving the aforementioned online monitoring and adaptive control. Specifically, the adaptive control algorithm includes...

[0093] Signal processing and feature extraction: Perform time-frequency analysis on the received acoustic emission signal (e.g., high-speed sampling and digital filtering) and extract the signal energy E within the preset characteristic frequency band as a key state indicator.

[0094] State recognition and decision-making: Preset first energy threshold E - th1 and the second energy threshold E - th2 is used to determine the current polishing status. Among them, E - th1>E - th2.

[0095] When E>E - At th1, the control unit determines that it is currently in the high-efficiency burr removal stage. At this time, the control unit controls the grinding motor 41 to run at a higher first speed N1 to quickly remove burrs.

[0096] When E - th2<E≤E - At time th1, the control unit determines that the surface finishing stage has begun. At this time, the control unit controls the grinding motor 41 to automatically switch to a lower second speed N2 to achieve fine grinding and avoid over-processing. Wherein, N2 < N1.

[0097] Endpoint determination: When the signal energy E remains below E - When the preset time T is reached, it indicates that the port has reached the required processing state. The control unit then determines that the grinding is complete and issues a stop command.

[0098] According to Embodiment 2 of the present invention, by integrating an acoustic emission sensor 50 with an intelligent control algorithm, a fundamental shift from "time-based open-loop processing" to "closed-loop adaptive processing based on real-time feedback of physical signals" is achieved. This system can automatically identify and adapt to the actual condition of burrs at each port, ensuring removal efficiency while intelligently optimizing processing parameters and accurately determining the endpoint of the polishing operation. This significantly improves the consistency and stability of processing quality without human intervention and effectively prevents product damage caused by over-polishing.

[0099] Example 3

[0100] Embodiment 3 of the present invention provides a processing method for an aviation connector product 100, which uses the processing apparatus for the aviation connector product 100 as described in Embodiment 2 above.

[0101] The processing method includes:

[0102] Step S10. Installation and positioning of the aviation connector product 100. Specifically, first align the mounting channel 107 on the mounting base 102 with the reinforcing post 24, and align the mounting hole 106 with the corresponding positioning screw 23; then, extend the reinforcing post 24 into the mounting channel 107, and make the detection end of the acoustic emission sensor 50 rigidly contact the interior of the tee body 101 to form an acoustic coupling path. During this process, the positioning screw 23 passes through the corresponding mounting hole 106, and finally, tighten the locking nut on each positioning screw 23 to reliably fix the mounting base 102 of the aviation connector product 100 onto the positioning base 22.

[0103] Step S20. Control the indexing motor 21 to drive the positioning seat 22 to rotate so that one of the ports to be processed on the tee body 101 faces downward and is aligned with the inlet and outlet 32 ​​on the collection cover 31.

[0104] Step S30. Control the lifting drive mechanism 10 to drive the indexing and positioning mechanism 20 to descend, so that the downward-facing port passes through the inlet and outlet 32 ​​and enters the collection cover 31 until the top of the drive shaft 42 extends into the port, and the contour grinding block 43 simultaneously contacts the end face and outer wall of the port.

[0105] Step S40. Control the grinding motor 41 to drive the drive shaft 42 to rotate, so as to simultaneously grind the end face and outer wall of the port through the contour grinding block 43; at the same time, start the negative pressure suction device to form a negative pressure inside the collection hood 31; in addition, the external air supply device can provide blocking gas to spray out low temperature blocking gas through the airflow hole 422 on the drive shaft 42 to form a chip-blocking air curtain at the annular gap between the outer wall of the drive shaft 42 and the inner wall of the port, so as to prevent metal chips from entering the interior of the tee body 101 through the port and to cool the grinding area of ​​the port.

[0106] Step S50. After the grinding of a single port is completed, control the grinding motor 41 to stop, and control the lifting drive mechanism 10 to drive the indexing and positioning mechanism 20 to rise, so that the ground port exits the collection cover 31.

[0107] Step S60. Repeat steps S20 to S50 to grind each port of the tee body 101 in turn until all ports are processed.

[0108] In some possible embodiments, in conjunction with the content described in Embodiment 2, step S40 further includes: the control unit adaptively adjusting the operating parameters of the grinding motor 41 based on the acoustic emission signal detected in real time by the acoustic emission sensor 50.

[0109] Specifically, the control unit adaptively adjusts the operating parameters of the grinding motor 41, including:

[0110] Step S401. Perform time-frequency analysis on the acoustic emission signal and extract the signal energy E of the preset characteristic frequency band;

[0111] Step S402. Compare the signal energy E with a preset first energy threshold E - th1 and the second energy threshold E - Compare th2 to determine the current polishing status; where E - th1>E - th2.

[0112] Step S403. Based on the current grinding state, dynamically control the speed of the grinding motor 41 according to the following conditions:

[0113] When E>E - At th1, it is determined that the burr removal is in the high-efficiency stage, and the grinding motor 41 is controlled to run at a constant first speed N1;

[0114] When E - th2<E≤E - At time th1, it is determined that the surface finishing stage has begun, and the polishing motor 41 is switched to a constant second speed N2; where N2 < N1.

[0115] Step S404. When the signal energy E remains below the second energy threshold E - When th2 reaches the preset time T, the port is determined to be polished.

[0116] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A processing apparatus for an aviation connector product, the aviation connector product comprising a tee body and a mounting base disposed on the tee body, the tee body comprising three ports located in the same reference plane; the mounting base being disposed perpendicular to the reference plane; characterized in that, The processing device includes: a lifting drive mechanism for outputting vertical reciprocating motion; an indexing and positioning mechanism connected to the output end of the lifting drive mechanism, including an indexing motor and a positioning seat driven by the indexing motor; the positioning seat is connected to the mounting base for enabling the tee body to rotate about a horizontal axis perpendicular to the reference plane, thereby allowing each of the ports to face downwards sequentially; a debris collection mechanism including a collection hood and a negative pressure suction device communicating with the collection hood; the collection hood is located below the aviation connector product, and its top has an inlet and outlet for the downward-facing ports to extend into the collection hood; a flexible seal is provided at the inlet and outlet, surrounding the inner wall of the inlet and outlet; an air chamber is formed between the flexible seal and the inner wall of the inlet and outlet, and the collection hood has an inlet and outlet communicating with the air chamber; wherein, when air is injected into the air chamber, the flexible seal can expand to form a tight seal with the outer wall of the tee body; a grinding mechanism including a... The system includes a drive shaft driven by a grinding motor and a contour grinding block fixedly mounted on the outer wall of the drive shaft; both the top end of the drive shaft and the contour grinding block are located inside the collection hood; the shape of the contour grinding block matches the outer contour of the port; the outer diameter of the drive shaft matches the inner diameter of the port; the grinding motor is a hollow motor and has a first air supply channel; a second air supply channel is provided inside the drive shaft; one end of the second air supply channel is connected to the first air supply channel; wherein, when the downward-facing port extends into the collection hood, the inner sidewall of the inlet and outlet forms a seal with the outer wall of the three-way body, the top end of the drive shaft extends into the port, and the contour grinding block simultaneously contacts the end face and outer wall of the port; the outer wall of the section of the drive shaft extending into the port is provided with an airflow hole; the airflow hole is connected to the second air supply channel and is used to introduce blocking gas into the port when the drive shaft rotates, so as to form a chip-blocking air curtain between the outer wall of the drive shaft and the inner wall of the port.

2. The processing apparatus for aviation connector products according to claim 1, characterized in that, The barrier gas is a cooled, low-temperature gas.

3. The processing apparatus for aviation connector products according to claim 1, characterized in that, The mounting base is provided with mounting holes and a mounting channel communicating with the interior of the tee body; the positioning base is provided with a positioning screw that mates with the mounting holes and a reinforcing column that can extend into the mounting channel; the outer wall of the reinforcing column matches the inner diameter of the mounting channel.

4. The processing apparatus for aviation connector products according to claim 3, characterized in that, An acoustic emission sensor, acoustically coupled to the main body of the tee, is installed on the reinforcing column to detect the acoustic emission signal generated during the polishing of the port.

5. The processing apparatus for aviation connector products according to claim 4, characterized in that, It also includes a control unit; the acoustic emission sensor and the grinding motor are both electrically connected to the control unit; the control unit is configured to adaptively adjust the operating parameters of the grinding motor based on the acoustic emission signal detected by the acoustic emission sensor.

6. A method for processing aviation connector products, employing the aviation connector product processing apparatus as described in claim 5; characterized in that, The processing method includes: Step S10. Fixing the mounting base of the aviation connector product onto the positioning base; Step S20. Controlling the indexing motor to drive the positioning base to rotate so that one port of the tee body to be processed faces downwards; Step S30. Controlling the lifting drive mechanism to drive the indexing positioning mechanism to descend, so that the downward-facing port passes through the inlet and outlet and enters the inside of the collection hood, until the top end of the drive shaft extends into the inside of the port, and the contour grinding block simultaneously contacts the end face and outer wall of the port; Step S40. Controlling the grinding motor to drive the drive shaft to rotate, so that the end face and outer wall of the port are simultaneously ground by the contour grinding block; at the same time, the negative pressure suction device is activated to form a negative pressure inside the collection hood; Step S50. After grinding is completed, controlling the grinding motor to stop, and controlling the lifting drive mechanism to drive the indexing positioning mechanism to rise, so that the ground port exits the collection hood; Step S60. Repeating steps S20 to S50, grinding each port of the tee body in sequence until all ports are processed.

7. The processing method for the aviation connector product according to claim 6, characterized in that, Step S40 further includes: the control unit adaptively adjusting the operating parameters of the grinding motor based on the acoustic emission signal detected in real time by the acoustic emission sensor.

8. The processing method for the aviation connector product according to claim 7, characterized in that, The control unit adaptively adjusts the operating parameters of the grinding motor, including: step S401. Performing time-frequency analysis on the acoustic emission signal to extract the signal energy E of a preset characteristic frequency band; step S402. Comparing the signal energy E with a preset first energy threshold E. - th1 and the second energy threshold E - Compare th2 to determine the current polishing status; where E - th1>E - th2; Step S403. Based on the current grinding state, dynamically control the speed of the grinding motor according to the following conditions: when E > E - When th1 is reached, it is determined that the machine is in the high-efficiency burr removal stage, and the grinding motor is controlled to run at a constant first speed N1; when E - th2<E≤E - At time th1, it is determined that the surface finishing stage has begun, and the polishing motor is controlled to switch to a constant second speed N2; where N2 < N1; Step S404. When the signal energy E is continuously lower than the second energy threshold E - When th2 reaches the preset time T, the port is determined to be polished.

Images