A full-automatic thread go-no-go gauge detection equipment

Abstract

The present application relates to the technical field of thread detection, and particularly relates to a full-automatic thread go-no-go gauge detection equipment. The technical scheme comprises a conveying platform, an equipment rack, an equipment case, a driving assembly, a reciprocating reversing assembly, a transmission assembly, a detection mechanism, a limiting assembly, a connecting assembly and a feedback judging assembly. After the driving assembly is started, the reciprocating reversing assembly is driven to work, and then the transmission assembly is driven to rotate reciprocally. When the transmission assembly rotates forward, three functions are realized: the detection mechanism is driven to rotate to perform thread detection; the limiting assembly is driven downward by the connecting assembly to press the bolt on the conveying platform into the detection mechanism; and the feedback judging assembly is driven to act, and corresponding qualified or unqualified signals are output according to whether the bolt can pass through the detection smoothly. Through a compact mechanical linkage system, the present application integrates feeding, centering, pressing, thread detection and result judging, realizes full automation of the detection process, and effectively improves the detection efficiency and consistency.

Description

Technical Field

[0001] This invention relates to the field of thread inspection technology, specifically to a fully automatic thread go / no-go gauge inspection device. Background Technology

[0002] Thread go / no-go gauge inspection is a critical quality check in the manufacturing of fasteners such as bolts and screws. Its purpose is to quickly verify whether key dimensions such as the pitch diameter of the workpiece thread are within the tolerance zone. Currently, most production lines still perform this inspection manually. Operators manually pick up the workpiece and use go and no-go gauges to check engagement. This method is not only inefficient and difficult to match the cycle time of automated production lines, but the inspection results are also highly dependent on the operator's experience and working condition, easily introducing subjective errors, leading to inconsistent quality judgments, and posing potential risks to product reliability.

[0003] To overcome the limitations of manual inspection, some automated inspection solutions have emerged in the market. For example, robots or robotic arms grasp workpieces and transfer them to a fixed inspection module, where an electric or pneumatic mechanism drives a gauge head for inspection. However, these devices typically have certain drawbacks. Their overall structure is often complex and bulky, resulting in high purchase and maintenance costs. More importantly, they usually require extremely high initial positioning accuracy for the workpiece, necessitating additional precision positioning fixtures or machine vision systems, which increases system complexity and debugging difficulty. Furthermore, the inspection action and the workpiece clamping and releasing process are often controlled by independent mechanisms, resulting in poor coordination and the risk of interference or scratching of workpiece threads. The judgment and sorting functions of the inspection results also often rely on another independent set of sensors and actuators, leading to complex equipment linkage logic, difficulty in improving the overall operating cycle time, and hindering further improvements in inspection efficiency. Therefore, further improvements are needed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a fully automatic thread go / no-go gauge testing device, which solves the problems mentioned in the background art.

[0005] The solution of the present invention to the above-mentioned technical problems is as follows:

[0006] This invention provides a fully automatic thread go / no-go gauge testing device, including a conveying platform, a machine frame, and a machine housing. The conveying platform is used to convey bolts and also includes:

[0007] A drive assembly is disposed on the bottom surface of the inner wall of the device chassis;

[0008] A reciprocating commutation assembly is disposed within the equipment chassis;

[0009] A transmission assembly connected to the reciprocating commutation assembly;

[0010] The detection mechanism is located at the output end of the transmission assembly;

[0011] A limiting component is disposed on the equipment frame;

[0012] A connection component, which is disposed within the device chassis;

[0013] A feedback judgment component is located inside the device chassis;

[0014] When the bolt is delivered to the inspection station, the drive component starts and drives the reciprocating reversing component to work. The reciprocating reversing component drives the transmission component to rotate in the forward direction. The transmission component synchronously drives the inspection mechanism to rotate. At the same time, the connecting component drives the limiting component to move downward to press the bolt into the rotating inspection mechanism for inspection. The transmission component also drives the feedback judgment component to operate and output a feedback signal based on the inspection result. After the inspection is completed, the reciprocating reversing component drives the transmission component to rotate in the reverse direction, so that the limiting component, the feedback judgment component, and the inspection mechanism are reset.

[0015] Based on the above technical solution, the present invention can be further improved as follows.

[0016] Furthermore, the testing mechanism includes a first support frame and a second support frame. A go gauge is installed on the top surface of the first support frame, and a centering frame is installed on the top surface of the go gauge. A connecting ball is installed on the bottom surface of the first support frame via a connecting column. The connecting ball is sleeved inside the second support frame. A third connecting ball is also sleeved on the bottom surface of the first support frame. A second support rod is fixedly installed on the third support rod. A first support rod is slidably sleeved on the second support rod, and the first support rod is connected to the second support rod via a return spring. A second connecting ball is fixedly installed on the bottom surface of the first support rod, and the second connecting ball is sleeved inside the second support frame.

[0017] The beneficial effects of adopting the above-mentioned further solutions are:

[0018] The first support frame is connected to the second support frame via connecting ball one and connecting ball two, forming a ball joint, allowing the first support frame to self-adaptively swing within a certain angle. At the same time, the first support frame is allowed to float along the axial direction through the elastic telescopic rod consisting of strut one, strut two and return spring. When the bolt is pressed in, it provides initial guidance to the center frame. If there is a slight positional deviation of the bolt, this floating structure can make the go gauge self-align and screw into the thread smoothly, avoiding thread jamming or damage caused by rigid connection. The return spring ensures that the detection mechanism automatically resets and aligns, preparing for the next detection.

[0019] Furthermore, there are three connecting balls in total, and the three connecting balls are arranged in a ring array relative to the support frame.

[0020] The beneficial effects of adopting the above-mentioned further solutions are:

[0021] The three connecting spheres are evenly distributed in a circular pattern, forming a stable multi-point spatial floating support system together with connecting sphere one and connecting sphere two. This layout can evenly bear and guide sway or axial displacement from all directions, ensuring the floating movement of the support frame one and improving the self-centering capability and motion accuracy of the gauge during the inspection process.

[0022] Furthermore, the limiting component includes a limiting frame and a screw. The screw is mounted inside the equipment frame via a bearing. A bevel gear is mounted on the screw. A guide frame is mounted on the limiting frame. The guide frame is slidably sleeved inside the equipment frame, and the guide frame is threadedly connected to the screw.

[0023] The beneficial effects of adopting the above-mentioned further solutions are:

[0024] The helical drive pair formed by the screw and the guide frame can convert the rotational motion into the vertical linear motion of the limit frame. The sliding of the guide frame within the equipment frame provides reliable guidance and prevents the limit frame from rotating or wobbling. This structure ensures that during inspection, the limit frame can press the bolt vertically down at a constant speed and pressure, so that it can accurately pass through the go gauge.

[0025] Furthermore, the connecting assembly includes a second bevel gear and a third bevel gear. The second bevel gear is mounted on the second rotating shaft of the transmission assembly, and the second bevel gear meshes with the third bevel gear for transmission. The end of the third bevel gear that is opposite to the second bevel gear is mounted with a fourth bevel gear via a transmission shaft, and the fourth bevel gear meshes with the first bevel gear of the limiting assembly for transmission.

[0026] The beneficial effects of adopting the above-mentioned further solutions are:

[0027] The connecting assembly forms a spatial reversing transmission chain through bevel gear two, bevel gear three, transmission shaft and bevel gear four. It converts the horizontal axial rotational power output by the transmission assembly into the power to drive the screw in the limit assembly to rotate. This allows the rotational motion of the detection mechanism and the downward pressing motion of the limit assembly to share the same power source and achieve mechanical linkage, simplifying the power system and ensuring the synchronization of the two key actions.

[0028] Furthermore, the feedback judgment component includes a connecting wheel, a mounting bracket one, and a mounting bracket two. The connecting wheel is mounted on the rotating shaft two of the transmission component, and a protrusion is fixedly mounted on the connecting wheel. A connecting rod one is rotatably mounted on the mounting bracket one via a connecting shaft. The connecting rod one is connected to the mounting bracket one via a torsion spring. A roller is rotatably mounted on the connecting rod one via a rotating shaft three. The roller is drively connected to the connecting wheel. A connecting rod two is mounted on the end of the connecting rod one opposite to the rotating shaft three via a pin. A fixing bracket is mounted on the connecting rod two via a pin. The fixing bracket is slidably sleeved within the mounting bracket two. A feedback sign is mounted on the top surface of the fixing bracket.

[0029] The beneficial effects of adopting the above-mentioned further solutions are:

[0030] When the bolt thread is qualified, the go gauge is screwed in smoothly, and the second rotating shaft drives the connecting wheel to rotate into place. The protrusion on it lifts the roller, and through the lever amplification effect of the first and second connecting rods, the fixing frame and feedback plate are pushed upward to show the qualified signal. If the thread is unqualified, causing the go gauge to be blocked, the second rotating shaft cannot rotate into place, the protrusion cannot lift the roller, the feedback plate remains in place, and shows unqualified.

[0031] Furthermore, the drive assembly includes a drive motor, the output end of which is equipped with a connecting frame, and a guide column is mounted on the connecting frame.

[0032] The beneficial effects of adopting the above-mentioned further solutions are:

[0033] The drive motor serves as the power source, providing rotational motion. The connecting frame and the eccentrically positioned guide column form a crank, which is the key input element for converting continuous rotational motion into the desired reciprocating motion.

[0034] Furthermore, the reciprocating reversing assembly includes a mounting plate, which is mounted inside the equipment chassis via a bracket. A connecting gear is rotatably mounted on the bottom end face of the mounting plate, and a guide rail is fixed on the bottom end face of the mounting plate. A rack is slidably sleeved inside the guide rail, and the rack meshes with the connecting gear for transmission. A guide ring is fixedly mounted on the bottom end face of the rack, and the guide post of the drive assembly is sleeved inside the guide ring.

[0035] The beneficial effects of adopting the above-mentioned further solutions are:

[0036] The drive motor drives the eccentric guide column to rotate, which forces the guide ring fitted on it to drive the rack frame to reciprocate linearly along the guide rail. The rack frame drives the connecting gear meshing with it to rotate alternately in the forward and reverse directions. In this way, the function of driving the output shaft to reciprocate is realized by using only a single unidirectional drive motor.

[0037] Furthermore, the transmission assembly includes a first rotating shaft, which is connected to the connecting gear of the reciprocating reversing assembly. A second rotating shaft is mounted on the first rotating shaft via a safety clutch, and the detection mechanism is provided on the second rotating shaft.

[0038] The beneficial effects of adopting the above-mentioned further solutions are:

[0039] The safety clutch is a critical overload protection device. During normal testing, it reliably transmits torque and drives the testing mechanism. In case of an accident, such as a defect in the bolt thread or a foreign object getting stuck, which causes the testing torque to increase abnormally beyond the set value, the safety clutch will automatically slip and disconnect the torque transmission, thereby effectively protecting the gauge, drive shaft system and drive motor from damage.

[0040] As can be seen, the fully automatic thread go / no-go gauge testing device provided by this invention has the following beneficial effects:

[0041] (1) The present invention integrates the complete process of workpiece conveying, preliminary centering, reliable clamping, thread go and no go gauge detection, real-time feedback of results and automatic reset of each actuator into a compact mechanical system. The entire process only requires one drive motor to drive according to the preset mechanical logic sequence, which can be completed continuously and accurately without human intervention, significantly improving detection efficiency and production automation level.

[0042] (2) After the drive component is started, the continuous rotation is converted into the reciprocating rotation required for detection through the reciprocating reversing component. During the positive rotation cycle, the transmission component simultaneously realizes three core functions: driving the detection mechanism to rotate and perform detection, driving the limit component to press the workpiece down stably after the power is reversed through the connecting component, and driving the feedback judgment component to enter the working state.

[0043] (3) The testing mechanism is connected by a ball joint and an elastic reset structure to form a floating testing head with multi-directional fine adjustment capability. When the bolt pressed in by the limiting component has a slight positional deviation, the gauge can make a small range of angular swing and axial floating based on the guidance of the centering frame, so as to smoothly guide the thread.

[0044] (4) The feedback judgment component is directly mechanically coupled to the rotating shaft that reflects the detection process. Only when the bolt thread is qualified can the gauge be screwed into place smoothly and drive the rotating shaft to rotate to a specific angle. This angle triggers a lever slider mechanism through the protrusion on the connecting wheel. Finally, the qualified signal is presented in the form of the feedback plate rising. If the thread is not qualified, the rotating shaft rotation angle is insufficient and the feedback plate remains unchanged. Attached Figure Description

[0045] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0046] In the attached diagram:

[0047] Figure 1 This is a front view schematic diagram of the present invention;

[0048] Figure 2 This is a side view of the device chassis of the present invention;

[0049] Figure 3 This is a schematic cross-sectional view of the equipment frame of the present invention;

[0050] Figure 4 This is a schematic diagram of the installation of the reciprocating commutator component of the present invention;

[0051] Figure 5 This is a schematic diagram of the installation of the transmission assembly of the present invention;

[0052] Figure 6 This is a schematic diagram of the transmission of the connecting component of the present invention;

[0053] Figure 7 This is a bottom view of the reciprocating commutator of the present invention;

[0054] Figure 8 This is an enlarged schematic diagram of the feedback judgment component of the present invention;

[0055] Figure 9 This is a side view schematic diagram of the feedback judgment component of the present invention;

[0056] Figure 10 This is a cross-sectional schematic diagram of the testing mechanism of the present invention;

[0057] Figure 11 This is a cross-sectional schematic diagram of the strut of the present invention.

[0058] The attached diagram lists the components represented by each number as follows:

[0059] 1. Conveying platform; 101. Bolt; 2. Equipment frame; 3. Equipment housing; 4. Drive assembly; 401. Drive motor; 402. Connecting frame; 403. Guide column; 5. Detection mechanism; 501. Bearing frame one; 502. Bearing frame two; 503. Centering frame; 504. Go gauge; 505. Connecting column; 506. Connecting ball one; 507. Connecting ball two; 508. Support rod one; 509. Support rod two; 510. Connecting ball three; 511. Return spring; 6. Limit assembly; 601. Limiting frame; 602. Guide frame; 603. Bevel gear one; 604. Screw; 7. Feedback judgment assembly; 701. Connecting wheel; 702. Safety pin; Mounting bracket 1; 703, Mounting bracket 2; 704, Connecting rod 1; 705, Rotating shaft 3; 706, Roller; 707, Connecting shaft; 708, Torsion spring; 709, Connecting rod 2; 710, Fixing bracket; 711, Feedback plate; 712, Protrusion; 8, Connecting assembly; 801, Bevel gear 2; 802, Bevel gear 3; 803, Drive shaft; 804, Bevel gear 4; 9, Reciprocating reversing assembly; 901, Mounting plate; 902, Bracket; 903, Connecting gear; 904, Guide ring; 905, Guide rail; 906, Rack and pinion frame; 10, Transmission assembly; 1001, Rotating shaft 1; 1002, Safety clutch; 1003, Rotating shaft 2. Detailed Implementation

[0060] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0061] Please see Figures 1 to 11 As shown, the embodiments provided by the present invention are as follows:

[0062] Example 1

[0063] A fully automatic thread go / no-go gauge testing device includes a conveying platform 1, a machine frame 2, and a machine housing 3. The conveying platform 1 is used to convey bolts 101, and also includes:

[0064] The drive component 4 is located on the bottom surface of the inner wall of the equipment chassis 3;

[0065] The reciprocating commutation assembly 9 is installed inside the equipment chassis 3;

[0066] The transmission assembly 10 is connected to the reciprocating reversing assembly 9;

[0067] The detection mechanism 5 is located at the output end of the transmission assembly 10;

[0068] Limiting component 6 is mounted on equipment frame 2;

[0069] The connecting component 8 is located inside the equipment chassis 3;

[0070] Feedback judgment component 7 is located inside the device chassis 3;

[0071] When the bolt 101 is delivered to the inspection station, the drive assembly 4 starts and drives the reciprocating reversing assembly 9 to work. The reciprocating reversing assembly 9 drives the transmission assembly 10 to rotate in the forward direction. The transmission assembly 10 synchronously drives the inspection mechanism 5 to rotate. At the same time, the connecting assembly 8 drives the limiting assembly 6 to move down to press the bolt 101 into the rotating inspection mechanism 5 for inspection. The transmission assembly 10 also drives the feedback judgment assembly 7 to operate and output a feedback signal based on the inspection result. After the inspection is completed, the reciprocating reversing assembly 9 drives the transmission assembly 10 to rotate in the reverse direction, so that the limiting assembly 6, the feedback judgment assembly 7 and the inspection mechanism 5 are reset.

[0072] The testing mechanism 5 includes a first support frame 501 and a second support frame 502. A go gauge 504 is mounted on the top surface of the first support frame 501, and a centering bracket 503 is mounted on the top surface of the go gauge 504. A connecting ball 506 is mounted on the bottom surface of the first support frame 501 via a connecting column 505. The connecting ball 506 is sleeved within the second support frame 502. A third connecting ball 510 is also sleeved on the bottom surface of the first support frame 501. A second support rod 509 is fixedly mounted on the third connecting ball 510. A first support rod 508 is slidably sleeved on the second support rod 509, and the first support rod 508 is connected to the second support rod 509 via a return spring 511. A second connecting ball 507 is fixedly mounted on the bottom surface of the first support rod 508, and the second connecting ball 507 is sleeved within the second support frame 502. Inside the second carrier 502, the first carrier 501 is connected to the second carrier 502 via connecting ball 506 and connecting ball 507, allowing the first carrier 501 to self-adaptively swing within a certain angle. At the same time, the elastic telescopic rod composed of strut 508, strut 509 and return spring 511 allows the first carrier 501 to float along the axial direction. When the bolt 101 is pressed in, it provides initial guidance to the middle frame 503. If there is a slight positional deviation of the bolt 101, the floating structure can make the go gauge 504 self-align and screw into the thread smoothly, avoiding thread jamming or damage caused by rigid connection. The return spring 511 ensures that the detection mechanism automatically resets and aligns, preparing for the next detection.

[0073] There are three connecting balls 510 in total. The three connecting balls 510 are arranged in a ring array relative to the support frame 501. The three connecting balls 510 are evenly distributed in a 120-degree ring. Together with connecting ball 506 and connecting ball 507, they form a stable multi-point spatial floating support system. This layout can evenly bear and guide the sway or axial displacement from all directions, ensure the floating movement of the support frame 501, and improve the self-centering ability and movement accuracy of the gauge 504 during the inspection process.

[0074] Example 2

[0075] To achieve reliable tightening and centering guidance of the bolts being inspected, for example, such as... Figures 1 to 11 As shown, the present invention also includes:

[0076] The limiting assembly 6 includes a limiting frame 601 and a screw 604. The screw 604 is mounted in the equipment frame 2 via bearings. A bevel gear 603 is mounted on the screw 604. A guide frame 602 is mounted on the limiting frame 601. The guide frame 602 is slidably sleeved in the equipment frame 2 and is threadedly connected to the screw 604. The screw 604 and the guide frame 602 form a helical transmission pair, which can convert the rotational motion into the vertical linear motion of the limiting frame 601. The sliding of the guide frame 602 in the equipment frame 2 provides reliable guidance and prevents the limiting frame 601 from rotating or shaking. This structure ensures that during inspection, the limiting frame 601 can press the bolt 101 vertically downward at a constant speed and pressure, so that it accurately passes through the go gauge 504.

[0077] Example 3

[0078] For power transmission and to provide overload protection in case of detection obstruction, for example, such as Figures 1 to 11 As shown, the present invention also includes:

[0079] The connecting component 8 includes a second bevel gear 801 and a third bevel gear 802. The second bevel gear 801 is mounted on the second shaft 1003 of the transmission component 10, and the second bevel gear 801 meshes with the third bevel gear 802 for transmission. The end of the third bevel gear 802 facing away from the second bevel gear 801 is connected to a fourth bevel gear 804 via the transmission shaft 803. The fourth bevel gear 804 meshes with the first bevel gear 603 of the limiting component 6 for transmission. The connecting component 8 forms a spatial reversing transmission chain through the second bevel gear 801, the third bevel gear 802, the transmission shaft 803, and the fourth bevel gear 804. It converts the horizontal axial rotational power output by the transmission component 10 into the power to drive the screw 604 in the limiting component 6 to rotate. This allows the rotational motion of the detection mechanism 5 and the downward pressing motion of the limiting component 6 to share the same power source and achieve mechanical linkage, simplifying the power system and ensuring the synchronization of the two key actions.

[0080] The transmission assembly 10 includes a first rotating shaft 1001, which is connected to the connecting gear 903 of the reciprocating reversing assembly 9. A second rotating shaft 1003 is mounted on the first rotating shaft 1001 via a safety clutch 1002. A detection mechanism 5 is provided on the second rotating shaft 1003. The safety clutch 1002 is a key overload protection device. During normal testing, it reliably transmits torque and drives the detection mechanism 5 to work. In case of an accident, such as a defect in the thread of the bolt 101 or foreign objects getting stuck, causing the detection torque to increase abnormally beyond the set value, the safety clutch 1002 will automatically slip and disconnect the torque transmission, thereby effectively protecting the gauge 504, the transmission shaft 803 system, and the drive motor 401 from damage.

[0081] Example 4

[0082] To convert continuous rotational motion into reciprocating rotational reversing motion, for example, such as Figures 1 to 11 As shown, the present invention also includes:

[0083] Drive assembly 4 includes drive motor 401, with a connecting frame 402 mounted on the output end of drive motor 401 and a guide column 403 mounted on the connecting frame 402. Drive motor 401 serves as a power source to provide rotational motion. The connecting frame 402 and the eccentrically positioned guide column 403 form a crank, which is a key input element for converting continuous rotational motion into the required reciprocating motion.

[0084] The reciprocating reversing assembly 9 includes a mounting plate 901, which is mounted inside the equipment housing 3 via a bracket 902. A connecting gear 903 is rotatably mounted on the bottom surface of the mounting plate 901, and a guide rail 905 is fixed on the bottom surface of the mounting plate 901. A rack frame 906 is slidably sleeved inside the guide rail 905, and the rack frame 906 meshes with the connecting gear 903 for transmission. A guide ring 904 is fixedly mounted on the bottom surface of the rack frame 906, and the guide post 403 of the drive assembly 4 is sleeved inside the guide ring 904. The drive motor 401 drives the eccentric guide post 403 to rotate, which forces the guide ring 904 on it to drive the rack frame 906 to perform reciprocating linear motion along the guide rail 905. The rack frame 906 drives the connecting gear 903, which meshes with it, to rotate alternately in the forward and reverse directions. In this way, the function of driving the output shaft to reciprocate is realized by using only a single unidirectional rotating drive motor 401.

[0085] Example 5

[0086] To transform the physical results of thread inspection into intuitive visual feedback signals, for example, such as Figures 1 to 11 As shown, the present invention also includes:

[0087] The feedback judgment component 7 includes a connecting wheel 701, a first mounting bracket 702, and a second mounting bracket 703. The connecting wheel 701 is mounted on the second rotating shaft 1003 of the transmission component 10, and a protrusion 712 is fixedly mounted on the connecting wheel 701. A first connecting rod 704 is rotatably mounted on the first mounting bracket 702 via a connecting shaft 707. The first connecting rod 704 is connected to the first mounting bracket 702 via a torsion spring 708. A roller 706 is rotatably mounted on the first connecting rod 704 via a third rotating shaft 705. The roller 706 is drively connected to the connecting wheel 701. A second connecting rod 709 is mounted on the end of the first connecting rod 704 away from the third rotating shaft 705 via a pin. A second connecting rod 709 is mounted on the second connecting rod 709 via a pin. The device is equipped with a fixing bracket 710, which is slidably fitted inside the mounting bracket 703. A feedback plate 711 is installed on the top surface of the fixing bracket 710. When the bolt 101 thread is qualified, the go gauge 504 is screwed in smoothly, and the rotating shaft 1003 drives the connecting wheel 701 to rotate into place. The protrusion 712 on it lifts the roller 706. Through the lever amplification effect of the connecting rod 1 704 and the connecting rod 2 709, the fixing bracket 710 and the feedback plate 711 are pushed upward to show a qualified signal. If the thread is unqualified, causing the go gauge 504 to be blocked, the rotating shaft 1003 cannot rotate into place, the protrusion 712 cannot lift the roller 706, and the feedback plate 711 remains in place, showing unqualified.

[0088] Furthermore, to achieve material feeding triggering and process monitoring, an industrial camera can be installed on the equipment frame 2 above the detection station of the conveying platform 1, and the camera can be electrically connected to an external controller such as a PLC or industrial computer. The industrial camera continuously or on demand captures images of the bolt 101 on the conveying platform 1. The controller analyzes the captured images in real time. Through image recognition technology, the controller can determine whether the bolt 101 has been accurately delivered to the predetermined station directly below the detection mechanism 5. After recognizing the arrival signal, the controller automatically sends a start command to the drive motor 401 to achieve vision-based precise triggering.

[0089] Furthermore, to simultaneously complete the detection of the go end and no-go end of the thread in one cycle and improve detection efficiency, two parallel detection stations and corresponding detection mechanisms 5 can be set up on the equipment. The two detection mechanisms 5 can be arranged sequentially along the conveying direction of the conveying platform 1. The detection mechanism 5 of the first detection station is equipped with a go gauge 504 to detect whether the thread pitch diameter is less than the minimum limit size; the detection mechanism 5 of the second detection station replaces its go gauge 504 with a no-go gauge to detect whether the thread pitch diameter is greater than the maximum limit size. Both stations use the same set of drive components 4 and reciprocating direction. Component 9, transmission component 10 and linkage logic, limit component 6 and feedback judgment component 7 also need to be set accordingly. At this time, the indication logic of feedback plate 711 needs to be adjusted accordingly: For a qualified bolt 101, it should be able to pass smoothly through the go gauge 504 of the first station, but cannot pass through the no-go gauge of the second station. Therefore, it can be set that when the detection action of the other no-go gauge station is completed, if the feedback plate 711 remains in the original position, the bolt 101 is judged to be thread qualified. If the feedback plate 711 is triggered to rise, it indicates that the bolt 101 is unqualified in the no-go gauge end detection.

[0090] Working principle:

[0091] Step 1:

[0092] The conveying platform 1 continuously conveys the bolts 101 to be inspected to the inspection station below the equipment frame 2. Usually, external sensors such as vision systems identify when the bolts 101 are in place and send a signal to the control system.

[0093] Step Two:

[0094] The control system commands the drive motor 401 of the drive component 4 to start. The drive motor 401 drives the eccentric guide column 403 on its output end connecting frame 402 to make continuous circular motion. Since the guide column 403 is fitted inside the guide ring 904 of the reciprocating reversing component 9, it forces the rack frame 906 to make horizontal reciprocating linear motion along the fixed guide rail 905. The rack frame 906 drives the connecting gear 903 meshing with it to rotate alternately in the forward and reverse directions.

[0095] Step 3:

[0096] When the connecting gear 903 rotates in the forward direction, power is transmitted through the transmission assembly 10. The first rotating shaft 1001 transmits power to the second rotating shaft 1003 via the safety clutch 1002. The rotation of the second rotating shaft 1003 simultaneously triggers three parallel mechanical actions:

[0097] The detection mechanism 5 at its upper end is directly driven to rotate, that is, the second support frame 502 drives the first support frame 501 and the gauge 504 to rotate.

[0098] Power transmission and direction conversion are achieved through connecting component 8: bevel gear 2 801 on shaft 2 1003 drives bevel gear 3 802, transmission shaft 803 and bevel gear 4 804, which ultimately drives bevel gear 1 603 on screw 604 in limit component 6 to rotate, causing screw 604 to rotate.

[0099] The connecting wheel 701 of the coaxially mounted feedback judgment component 7 starts to rotate.

[0100] The rotation of the screw 604 drives the guide frame 602, which is threaded together with it, to move downward in a straight line, thereby causing the limit frame 601 to press down smoothly. The pressing limit frame 601 pushes the bolt 101 located directly below it downward, so that its top end first contacts and is guided by the centering frame 503 of the detection mechanism 5, and is then forced to press against the rotating go gauge 504. With the assistance of the floating structure, the go gauge 504 can adaptively align and screw into the thread of the bolt 101.

[0101] Step Four:

[0102] If the thread of bolt 101 is qualified: the go gauge 504 is smoothly screwed into the predetermined depth, the second rotating shaft 1003 is rotated into place, driving the protrusion 712 on the connecting wheel 701 to rotate to a specific position. The inclined surface of the protrusion 712 lifts the roller 706, pushing the first connecting rod 704 to rotate around the connecting shaft 707. This rotation is converted into the vertical lifting motion of the fixed frame 710 through the second connecting rod 709, ultimately causing the feedback sign 711 installed on its top to rise, giving a qualified visual signal. After qualification, personnel remove it for repackaging.

[0103] If the thread of bolt 101 is not qualified: the go gauge 504 is obstructed when screwed in, the second shaft 1003 cannot rotate to the predetermined angle, the protrusion 712 on the connecting wheel 701 cannot reach the position of lifting roller 706, under the action of torsion spring 708, the entire lever system remains unchanged, the feedback plate 711 does not rise, and the indication is unqualified.

[0104] Step 5:

[0105] After the preset detection time ends or the action is completed, the drive motor 401 continues to run and enters the reverse cycle, and the reciprocating reversing component 9 drives the connecting gear 903 and the transmission component 10 to rotate in the opposite direction.

[0106] The rotating shaft 1003 reverses, causing the detection mechanism 5 to reverse, so that the gauge 504 is disengaged from the thread of the bolt 101.

[0107] Through the transmission of the connecting component 8, the screw 604 of the limit component 6 is driven to reverse, which drives the limit frame 601 to rise and reset, and loosens the bolt 101.

[0108] When the connecting wheel 701 of the feedback judgment component 7 reverses, the protrusion 712 disengages from the roller 706, and under the action of the torsion spring 708, the roller 706, connecting rod 704 and other components reset, and the feedback sign 711 falls down.

[0109] After the inspection is completed, bolt 101 is sent away by conveyor platform 1, and new bolt 101 enters the workstation, and the equipment is ready to start the next inspection cycle.

[0110] Overload protection mechanism: During the detection process in step three, if abnormalities such as thread malfunction or foreign object jamming cause a surge in load torque that exceeds the set value of the safety clutch 1002, the clutch will automatically slip and cut off the power transmission, thereby protecting the detection mechanism 5, transmission components and drive motor 401 from damage.

[0111] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0112] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fully automatic thread go / no-go gauge testing device, comprising a conveying platform (1), a machine frame (2), and a machine housing (3), wherein the conveying platform (1) is used to convey bolts (101), characterized in that, Also includes: A drive assembly (4) is disposed on the bottom surface of the inner wall of the device housing (3); A reciprocating commutator (9) is disposed inside the equipment chassis (3); A transmission assembly (10) is connected to the reciprocating reversing assembly (9); The detection mechanism (5) is located at the output end of the transmission assembly (10); A limiting component (6) is disposed on the equipment frame (2); A connection component (8) is disposed within the device chassis (3); Feedback judgment component (7) is disposed inside the device chassis (3); When the bolt (101) is delivered to the inspection station, the drive component (4) starts and drives the reciprocating reversing component (9) to work. The reciprocating reversing component (9) drives the transmission component (10) to rotate in the forward direction. The transmission component (10) synchronously drives the inspection mechanism (5) to rotate. At the same time, the connecting component (8) drives the limiting component (6) to move down to press the bolt (101) into the rotating inspection mechanism (5) for inspection. The transmission component (10) drives the feedback judgment component (7) to operate to output a feedback signal according to the inspection result. After the inspection is completed, the reciprocating reversing component (9) drives the transmission component (10) to rotate in the reverse direction, so that the limiting component (6), the feedback judgment component (7) and the inspection mechanism (5) are reset.

2. The fully automatic thread go / no-go gauge testing equipment according to claim 1, characterized in that: The testing mechanism (5) includes a first support frame (501) and a second support frame (502). A go gauge (504) is mounted on the top surface of the first support frame (501), and a centering frame (503) is mounted on the top surface of the go gauge (504). A connecting ball (506) is mounted on the bottom surface of the first support frame (501) via a connecting column (505). The connecting ball (506) is fitted inside the second support frame (502). A connecting ball three (510) is also sleeved on the bottom end face. A support rod two (509) is fixedly installed on the connecting ball three (510). A support rod one (508) is slidably sleeved on the support rod two (509). The support rod one (508) is connected to the support rod two (509) through a return spring (511). A connecting ball two (507) is fixedly installed on the bottom end face of the support rod one (508). The connecting ball two (507) is sleeved in the support frame two (502).

3. The fully automatic thread go / no-go gauge testing equipment according to claim 2, characterized in that: There are three connecting balls (510) in total, and the three connecting balls (510) are arranged in a ring array relative to the support frame (501).

4. The fully automatic thread go / no-go gauge testing equipment according to claim 1, characterized in that: The limiting component (6) includes a limiting frame (601) and a screw (604). The screw (604) is mounted in the equipment frame (2) through a bearing. A bevel gear (603) is mounted on the screw (604). A guide frame (602) is mounted on the limiting frame (601). The guide frame (602) is slidably sleeved in the equipment frame (2) and threadedly connected to the screw (604).

5. The fully automatic thread go / no-go gauge testing equipment according to claim 4, characterized in that: The connecting assembly (8) includes a second bevel gear (801) and a third bevel gear (802). The second bevel gear (801) is mounted on the second shaft (1003) of the transmission assembly (10), and the second bevel gear (801) meshes with the third bevel gear (802). The end of the third bevel gear (802) facing away from the second bevel gear (801) is equipped with a fourth bevel gear (804) via the transmission shaft (803). The fourth bevel gear (804) meshes with the first bevel gear (603) of the limiting assembly (6).

6. The fully automatic thread go / no-go gauge testing equipment according to claim 1, characterized in that: The feedback judgment component (7) includes a connecting wheel (701), a mounting bracket one (702), and a mounting bracket two (703). The connecting wheel (701) is mounted on the rotating shaft two (1003) of the transmission component (10), and a protrusion (712) is fixedly mounted on the connecting wheel (701). A connecting rod one (704) is rotatably mounted on the mounting bracket one (702) via a connecting shaft (707). The connecting rod one (704) is connected to the mounting bracket one (702) via a torsion spring (708). A roller (706) is rotatably mounted on a first (704) via a third (705) pivot. The roller (706) is connected to the connecting wheel (701) via a drive. A second connecting rod (709) is mounted on the end of the first connecting rod (704) away from the third (705) via a pin. A fixing frame (710) is mounted on the second connecting rod (709) via a pin. The fixing frame (710) is slidably sleeved in the second mounting frame (703). A feedback sign (711) is mounted on the top surface of the fixing frame (710).

7. The fully automatic thread go / no-go gauge testing equipment according to claim 1, characterized in that: The drive assembly (4) includes a drive motor (401), the output end of which is equipped with a connecting frame (402), and a guide column (403) is installed on the connecting frame (402).

8. The fully automatic thread go / no-go gauge testing equipment according to claim 7, characterized in that: The reciprocating reversing assembly (9) includes a mounting plate (901), which is mounted in the equipment chassis (3) via a bracket (902). A connecting gear (903) is rotatably mounted on the bottom surface of the mounting plate (901), and a guide rail (905) is fixed on the bottom surface of the mounting plate (901). A rack frame (906) is slidably sleeved in the guide rail (905). The rack frame (906) meshes with the connecting gear (903) for transmission, and a guide ring (904) is fixedly mounted on the bottom surface of the rack frame (906). The guide post (403) of the drive assembly (4) is sleeved in the guide ring (904).

9. The fully automatic thread go / no-go gauge testing equipment according to claim 8, characterized in that: The transmission assembly (10) includes a first rotating shaft (1001), which is connected to the connecting gear (903) of the reciprocating reversing assembly (9). A second rotating shaft (1003) is installed on the first rotating shaft (1001) via a safety clutch (1002), and the second rotating shaft (1003) is provided with the detection mechanism (5).

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