Gauge coaxiality size detection device

Abstract

This application discloses a high-precision dimensional detection device for the coaxiality of plug gauges, belonging to the technical field of plug gauge testing equipment. The high-precision dimensional detection device for the coaxiality of plug gauges includes a base; a centering and clamping mechanism mounted on the base; a support seat on which a receiving rod is fixedly mounted; and a detection assembly including a connecting rod, two measuring heads, a rotating seat, a linkage rod, a detection pointer, a stroke amplification mechanism, and a display mechanism. One end of the connecting rod is connected to the receiving rod; the rotating seat is fixedly mounted on the receiving rod; the detection pointer is mounted on the other side of the linkage rod; and the rotating assembly is disposed on the base. This technical solution, by setting up measuring heads, linkage rods, and a rotating assembly, directly amplifies and converts the radial runout caused by coaxiality error during the rotation of the plug gauge under test into a visible swing of the detection pointer, allowing personnel to make an intuitive and immediate judgment on whether the plug gauge is qualified without professional metrology training.

Description

Technical Field

[0001] This invention relates to the field of testing technology, specifically to a device for testing the coaxiality of plug gauges. Background Technology

[0002] As an indispensable gauge in the field of mechanical manufacturing and quality control, the dimensional and positional accuracy of plug gauges is a fundamental prerequisite for ensuring the accuracy of workpiece acceptance judgment. Among these, the coaxiality error between the axis of the working cylindrical surface and the axis of the shank cylindrical surface is a crucial accuracy indicator. If this error exceeds the tolerance, it will directly cause spatial deviation between the measuring datum and the working element during measurement, not only introducing additional measurement errors and affecting the correct judgment of whether the workpiece hole diameter is qualified, but also potentially accelerating wear due to uneven stress during frequent use, reducing its service life and reliability. Therefore, during the manufacturing and scheduled inspection cycles of plug gauges, as well as in the accuracy verification before use, workers frequently use coaxiality testing devices to check the coaxiality of plug gauges.

[0003] The prior art publication CN222850017U provides a coaxiality detection device for shaft parts. This device can adjust the distance between the detection component and the shaft part by setting an electric push rod, a drag block and a slide rail for movement. At the same time, it can adjust the contact force between the detection component and the shaft part so that it can accurately approach the outer surface of the shaft part, but not so tightly as to affect the detection results. This enables the detection of shaft parts of different sizes.

[0004] While the existing technical solutions described above can detect coaxiality, they still have the following drawbacks: These solutions and most commercially available devices, such as 3D coordinate measuring machines, primarily serve fixed metrology labs or quality inspection centers. They are often complex in structure, large in size, and dependent on stable power supplies and specific operating environments, typically requiring professional personnel for operation and data analysis. When managers at production sites, assembly stations, or tool depots have doubts about the accuracy of plug gauges in use or awaiting use, and need immediate and rapid troubleshooting and qualitative judgment, these complex, non-portable devices, reliant on power supplies and professional analysis, cannot meet such immediate and rapid on-site inspection needs. This lack of on-site rapid inspection capabilities means that potential gauge failure risks cannot be identified in a timely manner, potentially leading to assembly problems in subsequent batches of workpieces, affecting production efficiency and product quality. Therefore, we propose a plug gauge coaxiality dimensional inspection device. Summary of the Invention

[0005] To address one of the shortcomings of existing technologies, this invention provides a plug gauge coaxiality dimension detection device, which solves the problem of difficulty in accurately assessing coaxiality when detecting plug gauges with detection ports on the outer circumference.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plug gauge coaxiality dimension detection device, comprising: The base is a rigid support structure; A centering and clamping mechanism is installed on the base and is used to clamp the plug gauge to be tested; The support base is installed above one side of the base; The detection component, located above the support, is used to detect the plug gauge under test and provide feedback on the detection results; A rotating component is mounted on the base and is linked with the centering and clamping mechanism, which can drive the clamped plug gauge to rotate around its own axis. The detection components include: A connecting rod is provided on the side of the bearing seat facing the base; A measuring head is mounted on the connecting rod, with one end of the measuring head extending toward the centering and clamping mechanism and the other end connected to the rod body of the connecting rod; A linkage rod is located on the side of the connecting rod away from the centering and clamping mechanism, and the linkage rod and the connecting rod are linked together; A display mechanism is fixedly mounted above the support base. The display mechanism is used to provide feedback to the detection structure and includes: The detection pointer is linked to the linkage rod; the lateral displacement of the measuring head can be converted into the swinging motion of the detection pointer through the linkage rod.

[0007] Preferably, it also includes: A receiving rod is fixedly installed on the upper side of the bearing seat, and the receiving rod extends upward toward the bearing seat; The detection structure also includes: A rotating seat is fixedly mounted on one side of the receiving rod; The detection pointer and the linkage rod are respectively connected to the rotating seat; A stabilizing mechanism is disposed between the receiving rod and the connecting rod. The stabilizing structure can apply a limiting force to the connecting rod when no detection is required.

[0008] Preferably, the stabilizing mechanism includes: The adsorption element is located at the lower end of the connecting rod; The drive frame has one end rotatably connected to the receiving rod, and the other end extends downward toward the connecting rod; A magnetic mechanism is fixedly installed on the drive frame, and the magnetic mechanism is magnetically engaged with the adsorption component.

[0009] Preferably, the display mechanism further includes: The housing is fixedly mounted on one side of the rotating seat; The dial is fixed inside the housing and located on the swing path of the detection pointer; The stroke amplification mechanism is located between the linkage rod and the detection pointer, which can amplify the swing amplitude of the linkage rod.

[0010] Preferably, the display mechanism further includes: A prompting component, serving as an observation reference structure for the detection standard, includes: There are two indicator needles, both of which are installed inside the housing and are located on either side of the range of the detection pointer's swing on the dial. Alarm mechanism, the alarm mechanism includes: A photoelectric alarm is mounted on the indicator pin: The sensing block, located on the detection pointer, can trigger the photoelectric alarm.

[0011] Preferably, an observation window is provided on one side of the housing, and the prompting component further includes: An adjustment mechanism for independently adjusting the positions of the two indicator pins, the adjustment mechanism comprising: A fixing ring is inserted and fixed to the side of the housing facing the observation window; A rotating sleeve is rotatably inserted into a fixed ring and connected to one of the indicator pins; The transmission rod is rotatably inserted into the rotating sleeve and connected to another indicator pin; Two connecting plates are provided, which are respectively fixedly installed on the transmission rod and the rotating sleeve; The screw is threadedly connected to the connecting plate; A locking disc, mounted on the end of the screw, is used to press the viewing window to lock the position of the indicator needle.

[0012] Preferably, two measuring heads are provided, and the detection component further includes: The sliding sleeve is slidably connected to the connecting rod, and the sliding direction is the axial direction of the connecting rod; the number of sliding sleeves corresponds to the number of measuring heads, and the measuring heads are slidably connected to the sliding sleeves; The locking screw is threadedly connected to the sliding sleeve and is used to lock the position of the sliding sleeve on the connecting rod.

[0013] Preferably, the detection component further includes a calibration mechanism, the calibration mechanism comprising: A rotating bushing is rotatably mounted on a rotating seat, and the linkage rod is rotatably mounted inside the rotating bushing; A deflection mechanism, mounted on the rotating bushing, is used to drive the linkage rod to rotate at a small angle relative to the rotating bushing and to lock it. The deflection mechanism includes: The third gear is sleeved and fixed on the linkage rod; The support frame is fixedly installed on the rotating shaft sleeve; A miniature lead screw is rotatably supported on a support frame. A drive plate is threadedly connected to the miniature lead screw, and a rack that meshes with a third gear is fixedly mounted on the drive plate.

[0014] Preferably, the detection component further includes: A micro-motion telescopic component is disposed between the connecting rod and the linkage rod; The micro-motion telescopic component includes: The support block is fixedly installed on the linkage rod; A sliding rod is fixedly installed on a connecting rod, and the sliding rod is slidably inserted through a bearing block; A miniature spring is fixedly connected between the load-bearing block and the slide rod.

[0015] Preferably, it also includes: A pushing component can drive the support seat to move toward or away from the centering and clamping mechanism; the pushing component includes: The mounting bracket is fixedly connected to the base and extends outward toward the base; A limiting groove is formed inside the mounting bracket. The limiting groove is an elongated groove, and the bearing seat and the limiting groove are slidably connected. The push screw is rotatably positioned within the limiting groove, and the bearing seat is threadedly connected to the push screw.

[0016] Compared with existing technologies, it has the following beneficial effects: 1. The technical solution of this application, by setting up a measuring head, a linkage rod and a rotating component, directly amplifies and converts the radial runout caused by the coaxiality error when the plug gauge is rotated into a visible swing of the detection pointer. It can perform rapid detection without complex electronic sensors and data processing systems, so that staff can make intuitive and immediate judgments on whether the plug gauge is qualified without professional metrology training.

[0017] 2. The technical solution of this application, by setting up a sliding rod, a bearing block and a miniature spring, can absorb the overall displacement of the two measuring heads in the same direction caused by the macroscopic shape error of the plug gauge, and only transmit the swing reflecting the true coaxiality error to the subsequent mechanism. This can not only protect the plug gauge and measuring head being measured, but also avoid misjudgment to a certain extent.

[0018] 3. The technical solution of this application, by setting up a calibration mechanism, enables the staff to accurately set the zero position of the detection pointer, effectively eliminating systematic errors caused by factors such as mechanism gaps or assembly errors, and ensuring the accuracy of the detection benchmark.

[0019] 4. The technical solution of this application, by setting up a stabilizing mechanism, can fix the connecting rod and the measuring head on it in a certain position when the device is moved, stored or adjusted, effectively preventing it from swinging freely or bumping due to gravity or shaking.

[0020] 5. The technical solution of this application, by setting a prompt component, allows staff to customize the qualified area according to the tolerance requirements when inspecting plug gauges. There is no need to read specific scale values; the staff can instantly determine whether the plug gauge is qualified or not simply by whether the detection pointer crosses the boundary, which greatly improves the inspection efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the detection device according to an embodiment of this application; Figure 2 This is a schematic diagram showing the usage state of the detection device according to an embodiment of this application; Figure 3 This is a partial structural diagram of one side of the housing in the detection device of this application embodiment; Figure 4 This is a rear view schematic diagram of the structure of the detection device in the embodiment of this application after the shell has been cut open; Figure 5 This is a partial structural diagram of one side of the rotating seat in the detection device of this application embodiment; Figure 6 This is a schematic diagram of the calibration mechanism in the detection device of this application embodiment; Figure 7 This is a schematic diagram of the prompting component in the detection device of this application embodiment; Figure 8 This is a schematic diagram of the adjustment mechanism in the detection device according to an embodiment of this application; Figure 9 This is a schematic diagram of the stabilization mechanism in the detection device of this application embodiment; Figure 10 This is a rear view schematic diagram of the connecting rod and the receiving rod in the detection device of the embodiment of this application; Figure 11 This is a schematic diagram of the pushing component in the detection device of this application embodiment; Figure 12 This is a schematic diagram of the rotating component structure in the detection device of this application embodiment; In the picture: 1. Base; 2. Transmission frame; 3. Tripod; 4. Bearing base; 5. Rotating assembly; 501. Mounting plate; 502. First bevel gear; 503. Second bevel gear; 6. Detection Components; 601. Connecting Rod; 602. Sliding Sleeve; 603. Measuring Head; 604. Rotating Seat; 605. Housing; 606. Detection Pointer; 607. Locking Screw; 608. Observation Window; 609. Adsorption Component; 610. Rotating Bushing; 611. Linkage Rod; 612. Dial; 613. First Gear; 614. Support Frame; 615. Third Gear; 616. Rack; 617. Miniature Lead Screw; 618. Drive Plate; 619. Drive Column; 620. Second Gear; 621. Bearing Block; 622. Sliding Rod; 623. Miniature Spring; 624. Drive Frame; 625. Magnetic Mechanism; 7. Indication component; 701. Indication pin; 702. Photoelectric alarm; 703. Sensor block; 704. Fixing ring; 705. Transmission rod; 706. Rotating sleeve; 707. Screw; 708. Locking disc; 709. Connecting plate; 8. Pushing component; 801. Mounting bracket; 802. Limiting groove; 803. Pushing screw; 9. Receiving rod; 10. Small three-jaw chuck. Detailed Implementation

[0022] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-12 This application provides the following technical solutions: The plug gauge coaxiality dimension detection device includes a base 1, a centering and clamping mechanism, a bearing seat 4, a rotating assembly 5, and a detection assembly 6.

[0024] The base 1 serves as the basic structure of the device. A centering and clamping mechanism is located on the upper side of the base 1, used for automatic centering and clamping of the plug gauge to be tested, ensuring that the plug gauge is stably positioned in the preset testing position. The support seat 4 is connected to the base 1 and is located on the horizontal side of the centering and clamping mechanism. The rotating component 5 is linked to the centering and clamping mechanism; through this linkage, the clamped plug gauge can be driven to rotate uniformly around its own axis.

[0025] See Figures 3 to 9A receiving rod 9 is fixedly installed on the upper side of the support base 4. The detection assembly 6 includes a connecting rod 601, a measuring head 603, a linkage rod 611, and a detection pointer 606. The connecting rod 601 is mounted on the side of the receiving rod 9 facing the base 1. The number of measuring heads 603 can be set according to requirements; this solution has two. The two measuring heads 603 are mounted on the connecting rod 601 at intervals along the axial direction of the plug gauge to be measured. The mounting structure of the measuring heads 603 and the connecting rod 601 needs to allow the measuring heads 603 to be adjusted and locked in position so that the measuring ends of both measuring heads 603 are in contact with the outer circumferential surface of the plug gauge to be measured. The linkage rod 611 is located between the measuring head 603 and the detection pointer 606, forming a linkage structure between them. It converts the displacement motion of the measuring head 603 corresponding to the radial outer wall shape of the plug gauge into the swing motion of the detection pointer 606.

[0026] During testing, the operator uses a centering and clamping mechanism to center and clamp the plug gauge to be tested. The two measuring heads 603 are adjusted so that they are both in contact with the plug gauge surface. The plug gauge is then rotated by the rotating assembly 5. If the plug gauge has a coaxiality error, its surface will produce radial runout during rotation. This runout is transmitted through the two measuring heads 603, causing the connecting rod 601 to oscillate slightly. The linkage rod 611 then deflects, thereby causing the testing pointer 606 to oscillate. The operator can quickly and intuitively determine whether the plug gauge's coaxiality is acceptable by directly observing the oscillation amplitude of the testing pointer 606.

[0027] This technical solution uses a purely mechanical linkage structure to convert the coaxiality error of the plug gauge under test into a visible swing of the detection pointer 606, without relying on an external power supply, laser rangefinder, or complex electronic data processing system. Operators do not need professional metrology training and can quickly complete the test on-site, and make a qualitative judgment on whether it is qualified or not directly by the swing amplitude of the detection pointer 606, which greatly improves the immediacy and convenience of the test.

[0028] Based on the above implementation plan, and referring to Figure 1 , Figure 2 and Figure 12 The centering and clamping mechanism of this solution consists of a small three-jaw chuck 10. A transmission frame 2 is rotatably mounted inside the base 1, with its upper part extending to the upper side of the base 1. The transmission frame 2 is connected and fixed to the small three-jaw chuck 10. The rotating assembly 5 includes a mounting plate 501, a first bevel gear 502, and a second bevel gear 503.

[0029] The mounting plate 501 is fixedly mounted on the base 1; the first bevel gear 502 is rotatably connected to one side of the mounting plate 501; the second bevel gear 503 is coaxially fixed at the bottom of the transmission frame 2, and the second bevel gear 503 meshes with the first bevel gear 502. During inspection, the operator rotates the first bevel gear 502, and through the meshing linkage between the first bevel gear 502 and the second bevel gear 503, drives the transmission frame 2 to rotate. This, in turn, drives the small three-jaw chuck 10 and the plug gauge it holds to rotate around the plug gauge's own axis.

[0030] Based on the above scheme, a tripod 3 is fixedly installed on the lower part of the base 1. The tripod 3 provides stable support for the entire device, effectively reduces vibration during operation, and ensures stable testing conditions.

[0031] Based on the above implementation plan, and referring to Figure 1 , Figure 2 and Figure 11 In this solution, a pushing component 8 is installed on one side of the carrier 4 of the high-precision dimension detection device for the coaxiality of plug gauges. The pushing component 8 is used to drive the carrier 4 to move linearly closer to or further away from the centering and clamping mechanism, thereby adjusting the position of the detection component 6 from the plug gauge to be tested, ensuring that the measuring head 603 on it can contact plug gauges of different diameters and maintain a stable state of applying measuring force.

[0032] Based on the above implementation scheme, the pushing assembly 8 of this application includes a mounting frame 801, a limiting groove 802, and a pushing screw 803. The mounting frame 801 is fixedly mounted on the outside of the base 1. The limiting groove 802 is formed inside the mounting frame 801, and its extension direction is parallel to the direction in which the support 4 needs to move, i.e., the radial direction of the base 1 and the transmission frame 2. The pushing screw 803 is rotatably disposed within the limiting groove 802, and the axial direction of the pushing screw 803 is parallel to the length direction of the limiting groove 802. The bottom of the support 4 is located inside the limiting groove 802 and is slidably connected to the mounting frame 801 through the limiting groove 802. Furthermore, the bottom of the support 4 is threadedly connected to the pushing screw 803.

[0033] When the position of the bearing seat 4 needs to be adjusted, the operator can rotate the push screw 803 to drive the bearing seat 4, the receiving rod 9 and the entire detection assembly 6 to move precisely and smoothly in a straight line along the limiting groove 802, so as to achieve fine adjustment and locking of the measurement position.

[0034] Based on the above implementation plan, and referring to Figure 1 , Figure 9 and Figure 10 The detection component 6 of this solution also includes two sliding sleeves 602 and a locking screw 607.

[0035] The number of sliding sleeves 602 corresponds to the number of measuring heads 603. Each measuring head 603 is detachably mounted on a corresponding sliding sleeve 602. The sliding sleeve 602 is fitted onto the body of the connecting rod 601 and is slidably connected to it. A locking screw 607 passes through the side wall of the sliding sleeve 602 and is threadedly connected to it. When the locking screw 607 is tightened, its end abuts against the surface of the connecting rod 601, thereby locking the sliding sleeve 602 to any desired position on the connecting rod 601. Conversely, loosening the locking screw 607 releases the lock, allowing the sliding sleeve 602 to slide along the connecting rod 601. Multiple measuring heads 603 can be prefabricated and configured according to different specifications of common plug gauges to be measured, allowing for easy assembly and disassembly matching with different plug gauges.

[0036] In use, the operator can first loosen the locking screws 607 on each sliding sleeve 602 according to the detection position of the plug gauge, and then slide the two sliding sleeves 602 axially along the connecting rod 601 to adjust the axial distance between the two measuring heads 603. After the distance is adjusted to the appropriate position, tighten the locking screws 607 again to securely lock the measuring head 603. This allows the measuring head 603 to be accurately and stably aligned with the specific detection position on the plug gauge.

[0037] Based on the above implementation plan, and referring to Figures 3 to 7 A rotating seat 604 is fixedly installed on one side of the upper part of the receiving rod 9, and the linkage rod 611 is rotatably inserted through the rotating seat 604. The detection assembly 6 also includes a display mechanism, which includes a housing 605, an observation window 608, and a dial 612. The housing 605 is fixedly installed on one side of the rotating seat 604, and the housing 605 has an internal cavity. The linkage rod 611 passes through the side wall of the housing 605 and extends into the internal cavity of the housing 605. The observation window 608 is an open window structure located on the outside of the housing 605, and includes a protective cover or baffle made of transparent material. The dial 612 is fixedly installed on the side of the housing 605 facing the observation window 608 and is located on the radial side of the linkage rod 611. The detection pointer 606 is suspended on the side of the dial 612 facing the observation window 608, and the tip of the detection pointer 606 points to the scale on the dial 612.

[0038] When the linkage rod 611 and the detection pointer 606 swing, the operator can clearly observe the swing of the detection pointer 606 relative to the scale 612 through the transparent observation window 608. The operator can directly and quickly read or assess the approximate range of the coaxiality error by visual inspection alone, without the need for any electronic equipment, thus achieving intuitive and quantifiable results and greatly improving interpretation efficiency.

[0039] Based on the above implementation scheme, the display mechanism also includes a stroke amplification mechanism, which is used to amplify the swing amplitude of the linkage 611. The stroke amplification mechanism includes a first gear 613, a drive column 619, and a second gear 620.

[0040] The first gear 613 is located at the end of the linkage rod 611 and is coaxial with it. A drive column 619 is rotatably mounted on the dial 612, and a detection pointer 606 is fixedly installed on the end of the drive column 619 facing the dial 612. A second gear 620 is coaxially fixed to the drive column 619. The diameter of the second gear 620 is smaller than that of the first gear 613, and the second gear 620 meshes with the first gear 613. When the plug gauge rotates and produces a coaxiality error, its radial runout is transmitted through the measuring head 603 and the connecting rod 601, ultimately converting into a small angular deflection of the linkage rod 611. The first gear 613 rotates accordingly. Because the first gear 613 meshes with the smaller-diameter second gear 620, the second gear 620 and the drive column 619 fixed to it will obtain a larger rotation angle than the first gear 613, thus allowing the detection pointer 606 to swing at a large angle. This method greatly improves the ability of this technical solution to detect minute errors, helping staff to more accurately determine whether the plug gauge is qualified.

[0041] Based on the above implementation plan, and referring to Figure 4 , Figure 5 and Figure 6 The detection component 6 also includes a calibration mechanism, which includes a rotating bushing 610 and a deflection mechanism.

[0042] The rotating bushing 610 is rotatably mounted on the rotating seat 604. The linkage rod 611 is rotatably connected to the rotating seat 604 via the rotating bushing 610, and the linkage rod 611 is also rotatably connected to the linkage bushing 610. The deflection mechanism is mounted on the rotating bushing 610 and is used to drive the linkage rod 611 to rotate at a small angle relative to the rotating bushing 610, and can lock the position of the linkage rod 611 after rotation.

[0043] The deflection mechanism includes a third gear 615, a support frame 614, and a miniature lead screw 617. The third gear 615 is coaxially fixedly sleeved at the end of the linkage rod 611. The support frame 614 is fixedly mounted on the rotating bushing 610. The miniature lead screw 617 is rotatably mounted on the support frame 614, and a drive plate 618 is threadedly connected to the miniature lead screw 617. The drive plate 618 is constrained by and slidably connected to the support frame 614. The limiting form of the drive plate 618 can be various, such as a guide rod or a guide groove. A rack 616 is fixedly mounted on the drive plate 618, and the rack 616 meshes with the third gear 615.

[0044] Before testing or when zero-point adjustment is needed, the operator uses an external tool such as a screwdriver to rotate the miniature lead screw 617, which in turn drives the drive plate 618 to move the rack 616. Since the rack 616 meshes with the third gear 615, the third gear 615 causes the linkage rod 611 and its onboard detection pointer 606 to deflect slightly around their own axis, achieving precise adjustment of the zero point of the detection pointer 606. This structure allows the operator to accurately set the zero point of the detection pointer 606, effectively eliminating systematic errors caused by factors such as mechanism backlash or assembly errors, and ensuring the accuracy of the testing benchmark.

[0045] Based on the above implementation plan, and referring to Figure 4 , Figure 5 and Figure 10 In this design, a micro-motion telescopic assembly is installed between the connecting rod 601 and the linkage rod 611. The micro-motion telescopic assembly includes a support block 621, a sliding rod 622, and a miniature spring 623. The support block 621 and the linkage rod 611 are fixedly connected; the sliding rod 622 is fixedly mounted on the connecting rod 601 and slidably passes through one side of the support block 621; the miniature spring 623 is fixedly connected between the support block 621 and the sliding rod 622. The connection structure between the connecting rod 601 and the micro-motion telescopic assembly is approximately "T"-shaped. The other end of the micro-motion telescopic assembly is connected to the linkage rod 611, and its connection structure is also approximately "T"-shaped.

[0046] When the plug gauge under test has macroscopic shape errors at both ends that are in phase, rotation of the plug gauge will cause the two measuring heads 603 to produce synchronous radial displacements in the same direction. This will push the connecting rod 601, and the slide rod 622 will compress or stretch the miniature spring 623. Since the slide rod 622 can slide within the bearing block 621, it can absorb and compensate for this in-phase, overall displacement, preventing it from being rigidly transmitted and misjudged as a coaxiality error or damaging the measuring head 603 and the plug gauge under test. Only when the two measuring heads 603 experience different radial runouts will the connecting rod 601 produce effective oscillation, fully ensuring accurate feedback of the test results.

[0047] Based on the above implementation plan, and referring to Figure 1 , Figure 2 and Figure 9 The detection component 6 also includes a stabilizing mechanism, which includes an adsorption component 609, a drive frame 624, and a magnetic mechanism 625.

[0048] The adsorption element 609 is embedded and fixed at the lower end of the connecting rod 601; one end of the drive frame 624 is rotatably connected to the receiving rod 9, and a washer is provided between the drive frame 624 and the receiving rod 9 to increase the damping between them; the magnetic mechanism 625 is fixedly installed at the end of the drive frame 624 away from the receiving rod 8, and its magnetic poles are set towards the adsorption element 609, and the magnetic mechanism 625 is magnetically engaged with the adsorption element 609.

[0049] When this device is moved, stored, or other components are adjusted, the magnetic attraction between the magnetic mechanism 625 and the adsorption component 609 will attract the connecting rod 601 and its measuring head 603, keeping them in a fixed position and preventing them from swinging freely or bumping due to gravity or shaking. When testing is required, the operator can manually hold and rotate the drive frame 624 to change the position of the magnetic mechanism 625 fixed thereon, allowing the connecting rod 601 to swing freely.

[0050] Based on the above implementation plan, and referring to Figure 1 , Figure 3 , Figure 7 and Figure 8 The housing 605 is also equipped with a prompting component 7, which includes two prompting pins 701. The two prompting pins 701 are installed inside the housing 605 and are located on both sides of the swing range of the detection pointer 606 on the dial 612, respectively, to visually indicate the acceptable limit of coaxiality error.

[0051] The prompting component 7 also includes an adjustment mechanism for independently changing the position of the two prompting pins 701 on the dial 612. The adjustment mechanism includes a retaining ring 704, a rotating sleeve 706, a transmission rod 705, a connecting plate 709, a screw 707, and a locking disc 708.

[0052] The system includes a fixed ring 704 that is threaded and fixed onto the observation window 608; a rotating sleeve 706 that is rotatably threaded through the fixed ring 704 and fixedly connected to one of the indicator pins 701; a transmission rod 705 that is rotatably threaded through the rotating sleeve 706 and fixedly connected to the other indicator pin 701; two connecting plates 709 that are respectively fixedly installed on the transmission rod 705 and the rotating sleeve 706; a screw 707 that is threaded through the connecting plate 709; and a locking disc 708 that is installed at the end of the screw 707. When the screw 707 is rotated, the locking disc 708 can press against the outer surface of the observation window 608, locking the position of the indicator pin 701 through friction.

[0053] Before use, the operator can rotate the rotating sleeve 706 and the transmission rod 705 according to the coaxiality tolerance requirements of the plug gauge being tested, adjusting the two indicator needles 701 to appropriate positions so that the tips of the indicator needles 701 precisely point to the limit scale value allowed by the tolerance. Then, rotate the screw 707 until the locking plate 708 is in close contact with the observation window 608. During the test, if the swing range of the test pointer 606 does not exceed the area defined by the two indicator needles 701, it is judged as qualified; if it exceeds the range, it is judged as unqualified. By forming a clear and customizable qualified area on the scale 612 by the two independently adjustable indicator needles 701, the operator does not need to read specific scale values, but can instantly make a judgment on whether it is qualified or not simply by whether the test pointer 606 exceeds the limit, greatly improving the testing efficiency.

[0054] Based on the above implementation scheme, the prompting component 7 also includes an alarm mechanism, which comprises a photoelectric alarm 702 and a sensing block 703. The photoelectric alarm 702 is fixedly mounted on the prompting needle 701, and integrates a diffuse reflection photoelectric sensor and a buzzer or flashing alarm device. The sensing block 703 is a glossy reflective paint coated on the detection pointer 606 or a micro reflective lens pasted thereon, and the dial 612 is dark-colored.

[0055] When the detection pointer 606 swings to its limit position, the sensing block 703 on it enters the detection area of ​​the photoelectric sensor in the corresponding photoelectric alarm 702. After the sensor detects the reflected signal, it triggers an audible and visual alarm. In this way, the detection pointer 606 can provide an immediate and proactive reminder when it exceeds the qualified area, effectively preventing human error from causing a missed detection.

[0056] The implementation principle of the high-precision dimension detection device for the coaxiality of plug gauges in this solution is as follows: When relevant personnel need to temporarily detect the coaxiality of plug gauges at the work site, the personnel first place the device stably in an appropriate position using a tripod 3, and then automatically center and clamp the plug gauge to be tested using a small three-jaw chuck 10 to ensure that its axis position is fixed.

[0057] According to the diameter of the plug gauge, replace the corresponding measuring head 603, and push the lead screw 803 to cause the bearing seat 4 to move the detection assembly 6 along the limiting groove 802 until the measuring head 603 is close to the plug gauge to be tested in an appropriate position. Then loosen the locking screws 607 on the two sliding sleeves 602, and slide the sliding sleeves 602 axially along the connecting rod 601 until the two measuring heads 603 are aligned with the position of the plug gauge to be tested, and then tighten the locking screws 607 again.

[0058] Then, rotate the drive frame 624 to one side to release the magnetic mechanism 625 from the attraction of the connecting rod 601. Continue to fine-tune the push screw 803 so that the measuring ends of both measuring heads 603 are in stable contact with the cylindrical surface of the plug gauge.

[0059] Subsequently, the first bevel gear 502 is rotated manually or via external equipment by the operator, and the transmission frame 2 then drives the small three-jaw chuck 10 and the plug gauge to be tested to rotate. At this time, the operator can observe the swing amplitude of the test pointer 606 on the dial 612 through the observation window 608. If the swing range of the test pointer 606 is always within the area defined by the two indicator needles 701, the coaxiality of the plug gauge is deemed qualified; if the pointer swings beyond this area, it is deemed unqualified.

[0060] During this process, if the detection pointer 606 swings to its extreme position, the sensing block 703 on it will enter the detection range of the photoelectric sensor in the corresponding photoelectric alarm 702, triggering an audible and visual alarm and prompting the staff to further check the coaxiality of the plug gauge. This completes the operation of detecting the coaxiality of the plug gauge.

[0061] In the description of this application and its embodiments, it should be understood that the terms "top", "bottom", "height", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0062] In this application and its embodiments, unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0063] In this application and its embodiments, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0064] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0065] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0066] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A device for detecting the coaxiality of plug gauges, characterized in that, include: The base is a rigid support structure; A centering and clamping mechanism is installed on the base and is used to clamp the plug gauge to be tested; The support base is installed above one side of the base; The detection component, located above the support, is used to detect the plug gauge under test and provide feedback on the detection results; A rotating component is mounted on the base and is linked with the centering and clamping mechanism, which can drive the clamped plug gauge to rotate around its own axis. The detection components include: A connecting rod is provided on the side of the bearing seat facing the base; A measuring head is mounted on the connecting rod, with one end of the measuring head extending toward the centering and clamping mechanism and the other end connected to the rod body of the connecting rod; A linkage rod is located on the side of the connecting rod away from the centering and clamping mechanism, and the linkage rod and the connecting rod are linked together; A display mechanism is fixedly mounted above the support base. The display mechanism is used to provide feedback to the detection structure and includes: The detection pointer is linked to the linkage rod; the lateral displacement of the measuring head can be converted into the swinging motion of the detection pointer through the linkage rod.

2. The plug gauge coaxiality dimension detection device as described in claim 1, characterized in that, Also includes: A receiving rod is fixedly installed on the upper side of the bearing seat, and the receiving rod extends upward toward the bearing seat; The detection structure also includes: A rotating seat is fixedly mounted on one side of the receiving rod; The detection pointer and the linkage rod are respectively connected to the rotating seat; A stabilizing mechanism is disposed between the receiving rod and the connecting rod. The stabilizing structure can apply a limiting force to the connecting rod when no detection is required.

3. The plug gauge coaxiality dimension detection device as described in claim 2, characterized in that, The stabilizing mechanism includes: The adsorption element is located at the lower end of the connecting rod; The drive frame has one end rotatably connected to the receiving rod, and the other end extends downward toward the connecting rod; A magnetic mechanism is fixedly installed on the drive frame, and the magnetic mechanism is magnetically engaged with the adsorption component.

4. The plug gauge coaxiality dimension detection device as described in claim 2, characterized in that, The display mechanism further includes: The housing is fixedly mounted on one side of the rotating seat; The dial is fixed inside the housing and located on the swing path of the detection pointer; The stroke amplification mechanism is located between the linkage rod and the detection pointer, which can amplify the swing amplitude of the linkage rod.

5. The plug gauge coaxiality dimension detection device as described in claim 4, characterized in that, The display mechanism further includes: A prompting component, serving as an observation reference structure for the detection standard, includes: There are two indicator needles, both of which are installed inside the housing and are located on either side of the range of the detection pointer's swing on the dial. Alarm mechanism, the alarm mechanism includes: A photoelectric alarm is mounted on the indicator pin: The sensing block, located on the detection pointer, can trigger the photoelectric alarm.

6. The plug gauge coaxiality dimension detection device as described in claim 5, characterized in that, An observation window is provided on one side of the housing, and the prompting component further includes: An adjustment mechanism for independently adjusting the positions of the two indicator pins, the adjustment mechanism comprising: A fixing ring is inserted and fixed to the side of the housing facing the observation window; A rotating sleeve is rotatably inserted into a fixed ring and connected to one of the indicator pins; The transmission rod is rotatably inserted into the rotating sleeve and connected to another indicator pin; Two connecting plates are provided, which are respectively fixedly installed on the transmission rod and the rotating sleeve; The screw is threadedly connected to the connecting plate; A locking disc, mounted on the end of the screw, is used to press the viewing window to lock the position of the indicator needle.

7. The plug gauge coaxiality dimension detection device as described in claim 1, characterized in that, The measuring head is provided in two parts, and the detection component further includes: The sliding sleeve is slidably connected to the connecting rod, and the sliding direction is the axial direction of the connecting rod; the number of sliding sleeves corresponds to the number of measuring heads, and the measuring heads are slidably connected to the sliding sleeves; The locking screw is threadedly connected to the sliding sleeve and is used to lock the position of the sliding sleeve on the connecting rod.

8. The plug gauge coaxiality dimension detection device as described in claim 2, characterized in that, The detection component further includes a calibration mechanism, which includes: A rotating bushing is rotatably mounted on a rotating seat, and the linkage rod is rotatably mounted inside the rotating bushing; A deflection mechanism, mounted on the rotating bushing, is used to drive the linkage rod to rotate at a small angle relative to the rotating bushing and to lock it. The deflection mechanism includes: The third gear is sleeved and fixed on the linkage rod; The support frame is fixedly installed on the rotating shaft sleeve; A miniature lead screw is rotatably supported on a support frame. A drive plate is threadedly connected to the miniature lead screw, and a rack that meshes with a third gear is fixedly mounted on the drive plate.

9. The plug gauge coaxiality dimension detection device as described in claim 1, characterized in that, The detection component also includes: A micro-motion telescopic component is disposed between the connecting rod and the linkage rod; The micro-motion telescopic component includes: The support block is fixedly installed on the linkage rod; A sliding rod is fixedly installed on a connecting rod, and the sliding rod is slidably inserted through a bearing block; A miniature spring is fixedly connected between the load-bearing block and the slide rod.

10. The plug gauge coaxiality dimension detection device as described in claim 1, characterized in that, Also includes: A pushing component can drive the support seat to move toward or away from the centering and clamping mechanism; the pushing component includes: The mounting bracket is fixedly connected to the base and extends outward toward the base; A limiting groove is formed inside the mounting bracket. The limiting groove is an elongated groove, and the bearing seat and the limiting groove are slidably connected. The push screw is rotatably positioned within the limiting groove, and the bearing seat is threadedly connected to the push screw.

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