Flexible detection device and detection method for direction of drainage hole of sliding rail sleeve

Abstract

The invention provides a flexible detection device and method for the direction of a drainage hole of a sliding rail sleeve. The device comprises a base, a transparent cover, a driving assembly, a rotating table, a loading and unloading assembly and a plug. The transparent cover is connected to the base and is provided with at least one tolerance ring pattern; the driving assembly is mounted on the base; the rotating table is connected to the output end of the driving assembly, and a plurality of loading and unloading assemblies are arranged on the rotating table in the circumferential direction; the plug is in threaded connection with the drain hole and provided with a laser pen, and the axis of the laser pen coincides with the axis of the drain hole. According to the invention, the plug with the laser pen is mounted in the drain pipe joint of the slide rail sleeve, so that visible laser indicating light replaces invisible drain hole pointing, and whether the drain hole pointing of the slide rail sleeve is qualified or out-of-tolerance degree is visually and quantitatively confirmed by combining a calibrated tolerance ring pattern of the drain hole pointing on the transparent cover; compared with an existing qualitative evaluation method of manual operation, the method is smaller in detection error and higher in efficiency.

Description

Technical Field

[0001] This invention relates to the field of aerospace manufacturing technology, and more specifically, to a flexible detection device and method for the orientation of the drainage hole of a slide rail sleeve. Background Technology

[0002] The main function of the slide rail sleeve is to provide movement space for the slide rail within the aircraft wing fuel tank. Therefore, it is often thin-walled, shell-shaped, cantilever beam structure. Its central axis is consistent with the movement trajectory of the slide rail and is arc-shaped, i.e., arc-shaped axis curved surface sleeve.

[0003] In reality, the structure of slide rail sleeves is often serialized; however, the external dimensions of each specification of sleeve are limited by its installation position, exhibiting certain differences. One typical structural form of slide rail sleeve is... Figure 2 As shown, it consists of a flange 120, a cylinder 110, and a drain pipe connector 130. The diameter Ф of the cylinder 110 is generally between 100mm and 300mm, the sleeve wall thickness is between 2mm and 6mm, the central axis of the sleeve is a spatial arc with a radius R between 500mm and 2000mm, and the length H of the sleeve is between 400mm and 700mm. The drain pipe connector 130 is generally located near the inner arc end of the slide rail sleeve (the lowest point of the installation position). The drain pipe connector 130 has a drain hole 131 in the middle, and an internal thread 132 is provided on the side of the cylinder 110 away from the slide rail sleeve. The internal thread 132 of the drain pipe connector can be connected to a drain pipe through an adapter. The main function of the drain pipe connector is to promptly drain the condensate generated during flight from the inner cavity of the sleeve.

[0004] The drain hole 131 and the internal thread 132 in the middle of the drain pipe joint 130 are coaxial, and their axis determines the axis of the drain pipe connected to it. If the direction of the drain hole (i.e., the axis of the drain hole) exceeds the theoretical tolerance, under the restraint stress of the drain pipe, it will cause excessive stress concentration in the R area where the drain pipe joint 130 of the slide rail sleeve connects to the cylinder 110, which will seriously weaken the reliability and fatigue life of the slide rail sleeve.

[0005] Therefore, after the slide rail sleeve has undergone multi-component welding, the orientation of its drain holes needs to be inspected to ensure it is within the specified tolerance range or appropriately corrected during subsequent heat treatment to achieve a qualified state. Currently, this inspection mainly relies on manual operation. A certain thickness inner arc inspection plate is used, close to the theoretical mid-level of the slide rail sleeve, to visually inspect that the drain hole orientation is generally within the thickness range of the inner arc inspection plate. This inspection method can be considered qualitative and has a large margin of error. Summary of the Invention

[0006] (a) Technical problems to be solved The technical problem to be solved by the present application is that the existing slide rail sleeve drainage hole pointing detection method not only has a large error, but also is low in efficiency, and cannot effectively confirm whether the drainage hole pointing is completely qualified. At the same time, the number of test plates is large, which is not convenient for efficient management.

[0007] (Two) Technical solutions To achieve the above object, the technical scheme adopted by the present application is: In a first aspect, the present application provides a flexible detection device for the pointing of the drainage hole of a slide rail sleeve, for detecting the pointing of the drainage hole of the slide rail sleeve, the slide rail sleeve comprising a cylinder, a flange plate and a drainage pipe joint, the flange plate being connected to the open end of the cylinder, the drainage pipe joint being connected to the other end of the cylinder, the cylinder having an inner cavity, the drainage pipe joint having a drainage hole communicating with the inner cavity, the drainage hole being provided with an internal thread, comprising a base, a transparent cover, a drive assembly, a rotary workbench, a loading and unloading assembly and a plug; the transparent cover is connected to the base, and the transparent cover is provided with at least one tolerance ring pattern; the drive assembly is installed on the base; the rotary workbench is connected to the output end of the drive assembly, and the rotary workbench is provided with a plurality of loading and unloading assemblies along the circumference; the loading and unloading assembly comprises an inner support shaft, at least three inner support rods, a fancy threaded slider and an inner support face slider, the inner support shaft is rotatably connected to the rotary workbench, the inner support shaft has a threaded segment, the fancy threaded slider is threadedly connected to the threaded segment, one end of the inner support rod is hingedly connected to the fancy threaded slider, three inner support rods are uniformly spaced along the circumference of the inner support shaft, and the other end of the three inner support rods is respectively hingedly connected to the three inner support face sliders, and the inner support face slider is used for abutting against the circumferential inner wall surface of the central hole of the flange plate end face; the plug is threadedly connected to the drainage hole, and the plug is provided with a laser pen, and the axis of the laser pen coincides with the axis of the drainage hole. In the above technical scheme, the inner support mechanism (inner support shaft, inner support rod, fancy threaded slider and inner support face slider) of the loading and unloading assembly realizes flexible positioning of the slide rail sleeve, can automatically adapt to flange plate central holes of different sizes, and improves positioning accuracy and repeatability. The plug is provided with a laser pen, which converts the invisible pointing of the drainage hole into a visible laser beam, and realizes quantitative detection in combination with the tolerance ring pattern on the transparent cover, replaces traditional manual qualitative judgment, and significantly reduces detection error. The overall device structure is compact, which is convenient for integration into the production line, improves detection efficiency by more than 3 times, and is especially suitable for batch production scenes.

[0008] Preferably, the end face of the flange facing away from the cylinder is rectangular. In this embodiment, the slide rail sleeve is used for installation at the front spar of the wing. To ensure it does not twist (error-proof design), the flange is designed in a rectangular shape. Specifically, one end of the flange is round, and the other end is rectangular. The round end is welded and fixed to the open end of the cylinder, and the rectangular end is used for fastening to the front spar of the wing. During the inspection process, by keeping the side of the rectangular flange end face parallel or aligned with the side of the loading and unloading station, the circumferential positioning of the slide rail sleeve can be achieved, which is convenient and quick, thereby reducing adjustment time and improving assembly efficiency. At the same time, the rectangular design can prevent the slide rail sleeve from rotating and shifting during the inspection process, ensuring the reliability of the inspection results.

[0009] Preferably, the rotary table has multiple slider guide grooves, and the multiple inner support surface sliders are slidably connected to the multiple slider guide grooves one-to-one. The slider guide grooves guide the inner support surface sliders to slide precisely radially, ensuring uniform distribution of the inner support force, preventing local stress concentration on the slide rail sleeve, and extending the service life of the device. Furthermore, the slider guide grooves improve the stability of the loading and unloading components, making the inner support process smooth and controllable, and reducing human error.

[0010] Preferably, the tolerance ring pattern has M groups, where M≥3, and each group of tolerance ring patterns is marked with a number. Multiple groups of tolerance ring patterns accommodate the testing needs of slide rail sleeves of different specifications, improving the versatility and flexibility of the device and reducing tooling change time. The numbering avoids pattern confusion, facilitates quick identification and recording of test results by operators, and supports digital quality management.

[0011] Preferably, the rotary table has N loading / unloading components along its circumference, where N ≥ 3. The transparent cover is located at one of the loading / unloading components. The drive component drives the rotary table to rotate by a step rotation angle α, where α = 360° / N. This multi-station design enables parallel operation of inspection and loading / unloading, suitable for high-paced production lines. The step rotation ensures precise station transitions, prevents displacement of the slide rail sleeve during rotation, and guarantees continuous inspection.

[0012] Preferably, the system further includes a rolling bearing, the outer ring of which is connected to the rotary table, and the inner ring of which is connected to the inner support shaft. The rolling bearing reduces the frictional resistance during the rotation of the inner support shaft, making loading and unloading operations easier and less strenuous, and reducing operator fatigue.

[0013] Preferably, the inner support shaft also has a rotating handle.

[0014] Preferably, the base includes an extension rod and a first flange, the end of the extension rod is provided with the first flange, the transparent cover has a second flange, and the first flange is fastened to the second flange.

[0015] Preferably, the extension rod is provided with a weight-reducing hole.

[0016] Secondly, the present invention also provides a flexible detection method for the orientation of the drain hole of the slide rail sleeve, comprising the following steps: The center hole of the flange end face of the slide rail sleeve is fitted onto the loading and unloading assembly of the loading and unloading station. The inner support shaft is driven to rotate so that the fancy threaded slider moves. The inner support rod unfolds and pushes the inner support surface slider to abut against the inner wall of the center hole of the flange end face, thereby realizing the circumferential positioning of the slide rail sleeve on the rotary table. Connect the plug threaded into the drain hole, while keeping the axis of the laser pointer aligned with the axis of the drain hole; Drive the rotary table to rotate, so that the slide rail sleeve rotates to the detection station, and activate the laser pointer, which emits a laser beam to irradiate the transparent cover. If the laser is located within the corresponding tolerance ring pattern, the drain hole of the slide rail sleeve points within the theoretical tolerance range; otherwise, the drain hole of the slide rail sleeve points outside the theoretical tolerance range.

[0017] (III) Beneficial Effects The above-described technical solution of the present invention has at least the following advantages: 1. This invention installs a plug with a laser pointer inside the drain pipe joint of the slide rail sleeve, so that the visible laser pointer light replaces the invisible drain hole direction. Combined with the tolerance ring pattern of the drain hole direction calibrated on the transparent cover, it can intuitively and quantitatively confirm whether the drain hole direction of the slide rail sleeve is qualified or out of tolerance, thus replacing the existing qualitative evaluation method of manual operation.

[0018] 2. This invention achieves automatic calibration and positioning assembly of the center position of the flange of the slide rail sleeve by the radial opening and contraction of the inner support surface slider of the loading and unloading component at the loading and unloading station, which significantly improves the positioning and assembly accuracy.

[0019] 3. In this invention, the rotary table is evenly distributed with multiple loading and unloading stations and inspection stations along the circumference. When the rotary table rotates step by step, the inspection station and loading and unloading station can switch functions. Multiple stations can operate sequentially or simultaneously. If they operate simultaneously, the inspection efficiency can be increased by more than 3 times.

[0020] 4. The method of the present invention can effectively and quantitatively detect whether the direction of the drain hole is within the theoretical tolerance range. If there is a slight deviation, it can also provide a basis for subsequent quantitative correction. If there is a large deviation, it can also effectively prevent defective products from flowing into the next process, thereby ensuring the manufacturing accuracy of the slide rail sleeve and, to a certain extent, ensuring the reliability and effective life of the slide rail sleeve during service. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the flexible detection device for the direction of the drainage hole of the slide rail sleeve provided in an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the slide rail sleeve provided in an embodiment of the present invention.

[0024] Figure 3 This is a cross-sectional view of the drain pipe connector provided in an embodiment of the present invention.

[0025] Figure 4 yes Figure 1 Sectional view of region AA in the middle; Figure 5 This is a schematic diagram of the loading and unloading assembly provided in an embodiment of the present invention; Figure 6 yes Figure 4 Sectional view of the BB region; Figure 7 yes Figure 4 A schematic diagram of the structure in the G direction.

[0026] The labels for the attached figures are as follows: 100. Slide rail sleeve; 110. Cylinder body; 120. Flange; 130. Drain pipe connector; 111. Center hole; 112. Inner cavity; 131. Drain hole; 132. Internal thread; 1. Base; 2. Transparent cover; 3. Drive assembly; 4. Rotary worktable; 5. Loading and unloading assembly; 6. Plug; 7. Rolling bearing; 11. Extension rod; 12. First flange; 13. Weight reduction hole; 21. Tolerance ring pattern; 22. Second flange; 41. Slider guide groove; 51. Inner support shaft; 52. Inner support rod; 53. Fancy threaded slider; 54. Inner support shaped surface slider; 61. Laser pointer; 62. Laser; 63. Projection spot; 511. Threaded section; 512. Rotary handle. Detailed Implementation

[0027] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0028] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this invention will be described in more detail below with reference to specific embodiments: like Figures 1 to 7As shown, this embodiment of the invention provides a flexible detection device for the orientation of the drain hole of a slide rail sleeve 100, used to detect the orientation of the drain hole 131 of the slide rail sleeve 100. The slide rail sleeve 100 includes a cylinder 110, a flange 120, and a drain pipe connector 130. The flange 120 is connected to the open end of the cylinder 110, and the drain pipe connector 130 is connected to the other end of the cylinder 110. The cylinder 110 has an inner cavity 112, and the drain pipe connector 130 has a drain hole 131 communicating with the inner cavity 112. The drain hole 131 is provided with an internal thread 132. The flexible detection device for the orientation of the drain hole of the slide rail sleeve includes a base 1, a transparent cover 2, a drive assembly 3, a rotary worktable 4, a loading and unloading assembly 5, and a plug 6. The transparent cover 2 is connected to the base 1 and is provided with at least one tolerance ring pattern 21. The drive assembly 3 is mounted on the base 1. The rotary worktable 5 is used for the rotation of the slide rail sleeve. The table 4 is connected to the output end of the drive assembly 3. The rotary table 4 is provided with multiple loading and unloading assemblies 5 along the circumference. The loading and unloading assembly 5 includes an inner support shaft 51, at least three inner support rods 52, a fancy threaded slider 53, and an inner support surface slider 54. The inner support shaft 51 is rotatably connected to the rotary table 4. The inner support shaft 51 has a threaded section 511. The fancy threaded slider 53 is threadedly connected to the threaded section 511. One end of the inner support rod 52 is hinged to the fancy threaded slider 53. The three inner support rods 52 are evenly spaced along the circumference of the inner support shaft 51. The other end of the three inner support rods 52 is respectively hinged to three inner support surface sliders 54. The inner support surface sliders 54 are used to abut against the inner wall of the circumferential side of the center hole on the end face of the 111 flange. The plug 6 is threadedly connected to the drain hole 131. The plug 6 is provided with a laser pointer 61. The axis of the laser pointer 61 coincides with the axis of the drain hole 131. Specifically, by manually rotating the inner support shaft 51, the fancy threaded slider 53 at the other end of the inner support shaft 51 moves up and down along the axial direction of the inner support shaft 51 under the drive of the threaded section 511. Several inner support rods 52 are hinged to the outer circumferential surface of the fancy threaded slider 53, and the other end of the inner support rods 52 is hinged to a slidable inner support surface slider 54. The number of inner support rods 52 and inner support surface sliders 54 is the same as the number of slider guide grooves 41, generally 3-6 sets are set. The inner support surface sliders 54 slide on the slider guide grooves 41. The inner support shaft 51, the fancy threaded slider 53, the inner support rod 52, the multiple sets of inner support surface sliders 54, and the multiple sets of slider guide grooves 41 are all coaxially arranged. When the inner support shaft 51 is manually rotated, under the action of the threaded slider 53 and the multiple sets of inner support rods 52 arranged in an umbrella shape, the multiple sets of inner support surface sliders 54 open and close radially along the slider guide grooves 41, thereby realizing the flexible positioning, installation, and disassembly of the flange 120 of the slide rail sleeve 100.The umbrella-shaped telescopic mechanism, composed of multiple sets of inner support rods 52 and inner support surface sliders 54, has the core effect of "self-adaptation." Specifically, since the lengths of each inner support rod 52 are consistent, when the multiple sets of inner support rods 52 are opened, the axis of the inner support shaft 51 can coincide with the center position of the open end. For the center hole of the flange of the slide rail sleeve of different sizes, only the opening degree of the inner support rods 52 needs to be adjusted to achieve self-adaptive support. When there are manufacturing tolerances or slight deformations in the dimensions of the open end 111 of the sleeve, the mechanism can ensure that the inner support surface slider 54 is always fully in contact with the peripheral wall of the flange 120 through the independent movement of each slider. This process automatically compensates for the dimensional errors of the parts themselves, achieves true flexible positioning, avoids over-positioning or under-positioning problems, and improves the accuracy of the inspection benchmark from the source. The threaded section 511 of the inner support shaft 51 and the threaded engagement of the fancy thread slider 53 form a helical transmission with self-locking characteristics. When the rotary handle 512 stops rotating, the mechanism theoretically cannot reverse its movement due to external loads (such as the weight of the sleeve), ensuring the reliability of the clamping state during the inspection process and eliminating the risk of inspection failure due to loose clamping. Specifically, a blind hole or through hole is coaxially opened at the axial position of the other end of the plug 6. A laser pointer 61 is inserted into the blind hole or through hole, and the plug 6 and the laser pointer 61 are kept coaxial. The laser 62 emitted by the laser pointer 61 is coaxial with the laser pointer 61. By emitting the laser 62, the laser pointer 61 makes the previously invisible drain hole visible in the form of a laser indicator light. The laser pointer 61 can be opened and closed remotely or by other remote control methods.

[0031] Furthermore, the base 1 is made of high-strength aluminum alloy to reduce weight and ensure rigidity. The transparent cover 2 is made of polycarbonate material, which has high light transmittance and impact resistance, and the tolerance ring pattern 21 printed on it is laser-engraved to ensure accuracy. The number of inner support rods 52 is preferably four, evenly distributed circumferentially to provide balanced inner support force. The working surface of the inner support slider 54 is coated with polyurethane to prevent scratching the inner cavity wall of the cylinder 110. The slider guide groove 41 of the rotary table 4 is provided with wear-resistant bushings to extend service life.

[0032] In another embodiment of this application, the transparent cover 2 uses a replaceable panel, and a projector is set on the other side of the transparent cover 2, keeping the projection center of the projector coincide with the central axis of the projection area on the transparent cover. The tolerance ring pattern 21 is dynamically projected by the projector and directly generated from the CAD model, reducing replacement time. In this scheme, a corresponding program can be set to control the projector to project the corresponding tolerance ring pattern 21 during the inspection process of the corresponding model of slide rail sleeve 100, so as to avoid the problem of inconvenience in observation caused by setting multiple tolerance ring patterns 21 at the same time. In addition, the color of the projector's projection light is different from the color of the laser emitted by the laser pointer 61 to facilitate differentiation and identification. Furthermore, a CCD camera can be set at the corresponding position to automatically acquire the area of ​​the tolerance ring pattern 21 projected by the projector and the position of the projection spot 63 generated by the laser 62 on the transparent cover 2. Through corresponding image acquisition and recognition technology, it can automatically identify and determine whether the projection spot 63 is within the tolerance ring pattern 21. If the projection spot 63 is not within the tolerance ring pattern 21, it can automatically calculate the offset direction and offset distance between the projection spot 63 and the edge of the tolerance ring pattern 21 to provide data reference for subsequent correction.

[0033] In one embodiment, the end face of the flange 120 facing away from the cylinder 110 is rectangular. Since the flange 120 of the slide rail sleeve 100 is rectangular overall, the circumferential positioning of the slide rail sleeve 100 can be easily achieved.

[0034] In one embodiment, the rotary table 4 has multiple slider guide grooves 41, and multiple inner support surface sliders 54 are slidably connected to the multiple slider guide grooves 41 in a one-to-one correspondence.

[0035] In one embodiment, the rotary table 4 is provided with N loading / unloading components 5 along its circumference, where N ≥ 3. A transparent cover 2 is located at one of the loading / unloading components 5. The driving component 5 drives the rotary table 4 to rotate by a step rotation angle α, where α = 360° / N. Specifically, the rotary table 4 is evenly distributed with N workstations along its circumference, and each of the N workstations is provided with a loading / unloading component 5, where N ≥ 3. The N workstations include one inspection workstation and N-1 loading / unloading workstations. When the rotary table 4 rotates step by step, the inspection workstation and the loading / unloading workstation can switch functions.

[0036] In one embodiment, there are M groups of tolerance ring patterns 21, where M ≥ 3, and each group of tolerance ring patterns 21 is marked with a number. Specifically, each group of tolerance ring patterns 21 is marked with a number to avoid confusion. When the number of tolerance ring patterns 21 is large and they overlap, in addition to the numbering, corresponding indicator lines should also be provided (furthermore, different tolerance ring patterns 21 can be set with different colors to facilitate further differentiation). Figure 7As shown, different tolerance ring patterns 21 can be set according to different types of slide rail sleeves 100. For example, the flexible detection device for the drainage hole orientation of the slide rail sleeve provided in this embodiment is used to detect N=4 different types of slide rail sleeves 100 (namely, sleeve #1, sleeve #2, sleeve #3, and sleeve #N). Among them, the first tolerance ring pattern 211 is used for detecting the drainage hole orientation of sleeve #1, the second tolerance ring pattern 212 is used for detecting the drainage hole orientation of sleeve #2, the third tolerance ring pattern 213 is used for detecting the drainage hole orientation of sleeve #3, and the fourth tolerance ring pattern 214 is used for detecting the drainage hole orientation of sleeve #N. Each set of tolerance ring patterns 21 is marked with a number.

[0037] In one embodiment, a rolling bearing 7 is also included, the outer ring of which is connected to the rotary table 4, and the inner ring of which is connected to the inner support shaft 51.

[0038] In one embodiment, the inner support shaft 51 also has a rotating handle 512.

[0039] In one embodiment, the base 1 includes an extension rod 11 and a first flange 12. The end of the extension rod 11 is provided with the first flange 12, and the transparent cover 2 has a second flange 22. The first flange 12 and the second flange 22 are fastened together. Specifically, the base 1 is generally U-shaped. One end of the base 1 is provided with a drive assembly 3 (preferably a rotary motor), which is connected to the rotary table 4. The other end of the base 1 is the first flange 12, which is connected to the second flange 22 of the transparent cover 2 by fasteners. Driven by the drive assembly 3, the rotary table 4 can rotate circumferentially and stepwise, realizing flexible functional conversion between the detection station and the loading / unloading station. Furthermore, the mounting surface of the transparent cover 2 is basically consistent with the mounting plane of the rotary table 4. Furthermore, the bottom of the base 1 is also provided with support legs, which are a conventional feature and are not shown in the figure.

[0040] In one embodiment, the extension rod 11 is provided with a weight reduction hole 13.

[0041] Secondly, embodiments of the present invention also provide a flexible detection method for the orientation of the drain hole of the slide rail sleeve, comprising the following steps: The center hole 111 of the flange end face of the slide rail sleeve 100 is fitted onto the loading and unloading assembly 5 of the loading and unloading station. The inner support shaft 51 is driven to rotate so that the fancy threaded slider 53 moves. The inner support rod 52 unfolds and pushes the inner support surface slider 54 to abut against the inner wall of the center hole 111 of the flange end face, thereby realizing the circumferential positioning of the slide rail sleeve 100 on the rotary table 4. Connect the plug 6 to the drain hole 131 with a thread, and keep the axis of the laser pointer 61 aligned with the axis of the drain hole 131. Drive the rotary table 4 to rotate so that the slide rail sleeve 100 rotates to the detection station, and start the laser pointer 61. The laser pointer 61 emits a laser to irradiate the transparent cover 2. If the projected spot 63 formed by the laser 62 is located within the corresponding tolerance ring pattern 21, then the drainage hole of the slide rail sleeve 100 is within the theoretical tolerance range; otherwise, the drainage hole of the slide rail sleeve 100 is outside the theoretical tolerance range. By checking whether the position of the projected spot 63 of the laser 62 projected onto the transparent cover 2 is within the tolerance ring pattern 21, it is possible to more intuitively and accurately determine whether the drainage hole of the slide rail sleeve 100 is qualified or out of tolerance. If there is an out-of-tolerance, it can also provide a basis for subsequent quantitative correction.

[0042] The following are specific embodiments provided in this application: like Figure 1 As shown, in the flexible detection device with the drainage hole of the slide rail sleeve pointing to it, the rotary table 4 has N stations evenly distributed circumferentially, where N is 4. The four stations include a detection station C, a first loading / unloading station D, a second loading / unloading station E, and a third loading / unloading station F. At this time, three different specifications of slide rail sleeves 100 can be installed simultaneously at the three loading / unloading stations. When the rotary table 4 rotates stepwise, the stepwise rotation angle is α, where α = 360° / N = 360° / 4 = 90°, thus realizing the flexible functional conversion between the detection station and the loading / unloading station.

[0043] Taking the detection of the direction of the drain hole of slide rail sleeve #1 as an example, the main steps include: Step 1: Assemble the #1 slide rail sleeve to the first loading / unloading position D of the rotary worktable 4. By manually rotating the handle 512, under the action of the fancy threaded slider 53 and the multiple sets of umbrella-shaped internal support rods 52, the multiple sets of internal support surface sliders 54 radially contract and open along the slider guide groove 41 on the rotary worktable 4, thereby achieving the internal support assembly and fixation of the flange 120 of the slide rail sleeve 100. At the same time, since the flange 120 of the slide rail sleeve 100 is rectangular in shape, the circumferential positioning of the slide rail sleeve can be easily achieved.

[0044] Step 2: Assemble plug 6. Assemble the threaded end of plug 6 into the internal thread 132 of the drain pipe connector 130 of slide rail sleeve #1, ensuring the laser pointer 61, positioned axially at the other end of plug 6, is coaxial with plug 6. When laser pointer 61 is turned on to emit laser 62, the previously invisible drain hole becomes visible through laser pointer light.

[0045] Step 3: Rotate the first loading / unloading station D into the inspection station C. By rotating the rotary table 4 counterclockwise by an angle α, where α is 90°, the first loading / unloading station D, equipped with the #1 slide rail sleeve, is converted into the inspection station C.

[0046] Step 4: Quality inspection of the drainage hole orientation of the #1 slide rail sleeve. Using remote control or other methods, turn on the laser pointer 61 and observe whether the projected spot 63 of the laser 62 on the transparent cover 2 is within the tolerance ring pattern 21 corresponding to the #1 slide rail sleeve specification on the transparent cover 2. If the projected spot 63 is within the tolerance ring pattern 21, it indicates that the drainage hole orientation of the #1 slide rail sleeve is qualified; if the projected spot 63 exceeds the range of the corresponding tolerance ring pattern 21, it can provide a basis for quantitative correction in subsequent heat treatment processes. After the inspection is completed, turn off the laser pointer 61.

[0047] Step 5: Move the inspection station stepper to the loading / unloading station, and simultaneously move the next loading / unloading station stepper to the inspection station to facilitate quality inspection of the drainage hole orientation of the next slide rail sleeve. Meanwhile, after the #1 slide rail sleeve has completed inspection and entered the loading / unloading station, disassemble the parts to prepare for the assembly of the next slide rail sleeve.

[0048] The above method can effectively and quantitatively detect whether the direction of the drain hole is within the theoretical tolerance range. If there is a slight deviation, it can provide a basis for subsequent quantitative correction; if there is a large deviation, it can effectively prevent defective products from flowing into the next process, thereby ensuring the manufacturing accuracy of the slide rail sleeve and, to a certain extent, ensuring the reliability and effective life of the slide rail sleeve during service. At the same time, the method for detecting the direction of the drain hole of the slide rail sleeve can make the assembly, inspection, and disassembly of the slide rail sleeve evenly distributed and carried out simultaneously on the circumference of the rotary table 4, improving the work efficiency by more than 3 times.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flexible detection device for the orientation of a drain hole in a slide rail sleeve, used to detect the orientation of the drain hole in the slide rail sleeve, the slide rail sleeve comprising a cylinder, a flange, and a drain pipe connector, the flange being connected to the open end of the cylinder, the drain pipe connector being connected to the other end of the cylinder, the cylinder having an inner cavity, the drain pipe connector having a drain hole communicating with the inner cavity, the drain hole being provided with an internal thread, characterized in that, include: Base; A transparent cover, connected to the base, the transparent cover having at least one tolerance ring pattern; The drive assembly is mounted on the base; A rotary worktable is connected to the output end of the drive assembly, and the rotary worktable is provided with multiple loading and unloading components along the circumferential direction; The loading and unloading assembly includes an inner support shaft, at least three inner support rods, a fancy threaded slider, and an inner support surface slider. The inner support shaft is rotatably connected to the rotary table. The inner support shaft has a threaded section. The fancy threaded slider is threadedly connected to the threaded section. One end of each inner support rod is hinged to the fancy threaded slider. The three inner support rods are evenly spaced along the circumference of the inner support shaft. The other ends of the three inner support rods are respectively hinged to three inner support surface sliders. The inner support surface sliders are used to abut against the inner wall of the circumferential side of the center hole on the flange end face. A plug is threaded into the drain hole, and the plug is equipped with a laser pointer whose axis coincides with the axis of the drain hole.

2. The flexible detection device for the orientation of the drain hole of the slide rail sleeve as described in claim 1, characterized in that, The end face of the flange away from the cylinder is rectangular.

3. The flexible detection device for the orientation of the drain hole of the slide rail sleeve as described in claim 1, characterized in that, The rotary worktable has multiple slider guide slots, and the multiple inner support surface sliders are slidably connected to the multiple slider guide slots one by one.

4. The flexible detection device for the orientation of the drain hole of the slide rail sleeve as described in claim 1, characterized in that, There are M groups of tolerance ring patterns, where M ≥ 3, and each group of tolerance ring patterns is marked with a number.

5. The flexible detection device for the orientation of the drain hole of the slide rail sleeve as described in claim 1, characterized in that, The rotary worktable is provided with N loading and unloading components along the circumference, where N≥3. The transparent cover is provided at one of the loading and unloading components. The drive component drives the rotary worktable to rotate by a step rotation angle α, where α = 360° / N.

6. The flexible detection device for the orientation of the drain hole of the slide rail sleeve as described in claim 1, characterized in that, It also includes rolling bearings, the outer ring of which is connected to the rotary table, and the inner ring of which is connected to the inner support shaft.

7. The flexible detection device for the orientation of the drain hole of the slide rail sleeve as described in claim 1, characterized in that, The inner support shaft also has a rotating handle.

8. The flexible detection device for the orientation of the drain hole of the slide rail sleeve as described in claim 1, characterized in that, The base includes an extension rod and a first flange. The end of the extension rod is provided with the first flange, and the transparent cover has a second flange. The first flange and the second flange are fastened together.

9. The flexible detection device for the orientation of the drain hole of the slide rail sleeve as described in claim 8, characterized in that, The extension rod is provided with weight reduction holes.

10. A flexible detection method for the orientation of the drain hole of a slide rail sleeve, characterized in that, The flexible detection device for the orientation of the drain hole of the slide rail sleeve as described in any one of claims 1-9 is used for detection, and the detection method includes the following steps: The center hole of the flange end face of the slide rail sleeve is fitted onto the loading and unloading assembly of the loading and unloading station. The inner support shaft is driven to rotate so that the fancy threaded slider moves. The inner support rod unfolds and pushes the inner support surface slider to abut against the inner wall of the center hole of the flange end face, thereby realizing the circumferential positioning of the slide rail sleeve on the rotary table. Connect the plug threaded into the drain hole, while keeping the axis of the laser pointer aligned with the axis of the drain hole; Drive the rotary table to rotate, so that the slide rail sleeve rotates to the detection station, and activate the laser pointer, which emits a laser beam to irradiate the transparent cover. If the laser is located within the corresponding tolerance ring pattern, the drain hole of the slide rail sleeve points within the theoretical tolerance range; otherwise, the drain hole of the slide rail sleeve points outside the theoretical tolerance range.

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