A threaded go-no-go gauge detection device

Abstract

This invention belongs to the field of shaft parts inspection, specifically a thread go / no-go gauge inspection device. It includes a go / no-go gauge inspection base, a go gauge inspection sleeve, a no-go gauge inspection sleeve, a displacement sensor assembly, and two torque sensors. A go gauge inspection element is mounted on the go gauge inspection sleeve, and a no-go gauge inspection element is mounted on the no-go gauge inspection sleeve. This invention, through the combined use of torque and displacement sensors, meets the functional requirements of equipment inspection, achieving a high level of automation and completely changing the traditional manual inspection method, resulting in high inspection efficiency. It meets the accuracy requirements for thread inspection, has high reliability, and avoids damage to the threads under inspection. Its compact structure and reasonable design meet the requirements of equipment maintenance and operability. Furthermore, by quickly changing the go and no-go gauge inspection sleeves, it can meet the size requirements of shaft workpieces of different specifications, demonstrating strong adaptability.

Description

Technical Field

[0001] This invention belongs to the field of shaft parts inspection, specifically a thread go / no-go gauge inspection device. Background Technology

[0002] During the inspection process, shaft parts need to undergo thread go / no-go gauge testing quickly, accurately, and safely, preventing any damage to the threads. However, existing inspection methods mainly rely on manual inspection by workers, which is inefficient and prone to damaging the threads being inspected, thus failing to meet the increasingly demanding production requirements. Summary of the Invention

[0003] To address the above problems, the present invention aims to provide a thread go / no-go gauge testing device.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] A thread go / no-go gauge testing device includes a go / no-go gauge testing base, a go gauge testing sleeve, a no-go gauge testing sleeve, a displacement sensor assembly, and two torque sensors.

[0006] The go / no-go gauge detection base is slidably mounted on the worktable. Two torque sensors are respectively mounted in parallel on the go / no-go gauge detection base. The detection shaft of one torque sensor is connected to the go gauge detection sleeve, and the detection shaft of the other torque sensor is connected to the no-go gauge detection sleeve. The go / no-go gauge detection base moves along the axial direction of the go gauge detection sleeve and the no-go gauge detection sleeve, and the axial position of the go / no-go gauge detection base is detected by the displacement sensor assembly.

[0007] The lower surface of the go / no-go gauge detection base is provided with a slider, and the worktable is provided with a slide rail that is slidably connected to the slider.

[0008] Limiting blocks are respectively provided on the front and rear worktables of the go / no-go gauge detection base in the direction of movement.

[0009] The go / no-go gauge testing base is provided with a spring stop block, and the worktable is provided with a guide rod. A limit nut is threaded onto the guide rod, and the guide rod passes through the spring stop block. A spring is sleeved on the guide rod between the spring stop block and the limit nut.

[0010] One end of each torque sensor is mounted on the go / no-go gauge detection base by screws, and the other ends of both torque sensors are connected to the same fixing plate. A connecting post is provided between the fixing plate and the go / no-go gauge detection base. One end of the connecting post near the go / no-go gauge detection base is provided with a limiting head, and the other end passes through the fixing plate and is provided with a locking nut.

[0011] The displacement sensor assembly includes a movable part mounted on the go / no-go gauge detection base and a fixed part mounted on a worktable, wherein the movable part moves on the fixed part.

[0012] A go gauge test element is mounted on the go gauge test sleeve by screws, and a no-go gauge test element is mounted on the no-go gauge test sleeve by screws.

[0013] The go gauge and no-go gauge inspection sleeves are respectively connected to the detection shafts of the corresponding torque sensors via positioning beads.

[0014] The advantages and positive effects of this invention are as follows:

[0015] This invention, through the combined use of a torque sensor and a displacement sensor, meets the functional requirements of equipment testing, achieving a high level of automation and completely changing the traditional manual testing method, resulting in high testing efficiency. It meets the accuracy requirements for thread testing, ensuring high reliability and avoiding damage to the threads under inspection. Its compact structure and reasonable design meet the requirements for equipment maintenance and operability. Furthermore, by quickly changing the go gauge and no-go gauge testing sleeves, it can meet the size requirements of different specifications of the shaft workpieces under inspection, demonstrating strong adaptability. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0018] Figure 3 This is a top view of the structure of the present invention;

[0019] Figure 4 This is a side view of the structure of the present invention;

[0020] Figure 5 for Figure 2 A schematic diagram of the AA-direction cross-sectional structure.

[0021] In the diagram: 1 is the go / no-go gauge inspection base, 2 is the go gauge inspection sleeve, 3 is the stop gauge inspection sleeve, 4 is the torque sensor, 5 is the slide rail, 6 is the limit stop, 7 is the spring stop, 8 is the guide rod, 9 is the limit nut, 10 is the spring, 11 is the fixing plate, 12 is the connecting column, 13 is the locking nut, 14 is the moving part, 15 is the fixing part, 16 is the displacement sensor mounting base, 17 is the positioning bead, and 001 is the worktable. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.

[0023] A thread go / no-go gauge testing device, such as Figure 1-5 As shown, this embodiment includes a go / no-go gauge detection base 1, a go gauge detection sleeve 2, a no-go gauge detection sleeve 3, a displacement sensor assembly, and two torque sensors 4. A go gauge detection element is mounted on the go gauge detection sleeve 2 via screws, and a no-go gauge detection element is mounted on the no-go gauge detection sleeve 3 via screws. The go and no-go gauge detection elements adopt existing go or no-go gauge structures, making disassembly and replacement easy.

[0024] The go / no-go gauge testing base 1 is slidably mounted on the worktable 001. Two torque sensors 4 are respectively mounted parallel to each other on the go / no-go gauge testing base 1. The detection shaft of one torque sensor 4 is connected to the go gauge testing sleeve 2 via a positioning bead 17, and the detection shaft of the other torque sensor 4 is connected to the no-go gauge testing sleeve 3 via a positioning bead 17. The go / no-go gauge testing base 1 is rotatably connected to the detection shafts of each torque sensor 4 via bearings. The go / no-go gauge testing base 1 moves axially along the go gauge testing sleeve 2 and the no-go gauge testing sleeve 3, and the axial position of the go / no-go gauge testing base 1 is detected by a displacement sensor assembly. Each torque sensor 4 is a commercially available product and is connected to an external controller to detect the torque when the go gauge or no-go gauge is threaded onto the go gauge testing sleeve 2 or the no-go gauge testing sleeve 3. The threading force during the detection process drives the go / no-go gauge testing base 1 to move axially.

[0025] Specifically, in this embodiment, the lower surface of the go / no-go gauge detection base 1 is provided with a slider, and the worktable 001 is provided with a slide rail 5 that is slidably connected to the slider. The slide rail 5 and the slider are provided to enable the go / no-go gauge detection base 1 to move stably on the worktable 001.

[0026] Specifically, in this embodiment, limit blocks 6 are provided on the worktables 001 on both the front and rear sides of the go / no-go gauge detection base 1 in the direction of movement, so as to prevent the go / no-go gauge detection base 1 from leaving the normal movement area and to ensure that there is no excessive engagement during the detection process.

[0027] Specifically, in this embodiment, spring stops 7 are respectively provided on the left and right ends of the go / no-go gauge detection base 1. Guide rods 8 are respectively provided on the upper surfaces of the worktables 001 on the left and right sides of the go / no-go gauge detection base 1. Each guide rod 8 is threaded with a limit nut 9, and the guide rod 8 passes through the spring stop 7 on the same side. A spring 10 is sleeved on the guide rod 8 between the spring stop 7 and the limit nut 9. The spring 10 can provide preload to the workpiece, assisting the go gauge detection element on the go gauge detection sleeve 2 or the no-go gauge detection element on the no-go gauge detection sleeve 3 to engage with the workpiece. The guide rods 8 guide the movement of the spring 10 and the go / no-go gauge detection base 1.

[0028] Specifically, in this embodiment, one end of each torque sensor 4 is mounted on the go / no-go gauge detection base 1 by screws, and the other ends of both torque sensors 4 are connected to the same fixing plate 11. Two connecting posts 12 are provided between the fixing plate 11 and the go / no-go gauge detection base 1. Each connecting post 12 has a limiting head at one end near the go / no-go gauge detection base 1, and the other end passes through the fixing plate 11 and is provided with a locking nut 13. Through the cooperation of the fixing plate 11 and the connecting posts 12 with the limiting head and locking nut 13, the torque sensor 4 can be stably installed on the go / no-go gauge detection base 1.

[0029] Specifically, in this embodiment, the displacement sensor assembly includes a movable part 14 mounted on a spring stop 7 on the go / no-go gauge detection base 1 and a fixed part 15 mounted on a worktable 001. The movable part 14 moves on the fixed part 15, and the fixed part 15 is mounted on the worktable 001 via a displacement sensor mounting base 16. The displacement sensor assembly including the movable part 14 and the fixed part 15 is a commercially available displacement sensor and is connected to an external controller.

[0030] Working principle:

[0031] During inspection, the operation is performed in the order of first checking the no-go gauge and then checking the go gauge. When checking the no-go gauge, the no-go gauge detection element on the no-go gauge detection sleeve 3 is brought into contact with the workpiece, and the spring 10 provides the engagement preload. The displacement sensor assembly records the initial position of the no-go and go gauge detection base 1. Then, the workpiece rotates, and the no-go gauge detection element on the no-go gauge detection sleeve 3 engages with the workpiece, causing the workpiece to be screwed into the no-go gauge detection element. The workpiece does not undergo axial displacement, but the no-go gauge detection sleeve 3 undergoes axial displacement, which drives the no-go and go gauge detection base 1 to move on the slide rail 5. The torque sensor 4 monitors the magnitude of the torque generated by the engagement in real time. When the torque value reaches the set value, the displacement sensor assembly records the position at this time and calculates the number of turns of engagement of the no-go gauge detection sleeve 3. If it is greater than the set number of turns, it is judged as unqualified and is transferred by the robot to the unqualified material area to wait for the next process.

[0032] If the no-go gauge test is successful, the go gauge test is performed. The go gauge detection element on the go gauge detection sleeve 2 contacts the workpiece, and the spring 10 provides the pre-engagement force. The displacement sensor assembly records the initial position of the go / no-go gauge detection base 1. Next, the workpiece rotates and screws into the go gauge detection element. The workpiece does not move axially, but the go gauge detection sleeve 2 moves axially, causing the go / no-go gauge detection base 1 to move on the slide rail 5. The torque sensor 4 monitors the magnitude of the torque generated during engagement in real time. If the torque exceeds a set value during the process of the go gauge detection sleeve 2 reaching the end of the thread, the displacement value at this moment is compared with the preset displacement value. If the detected displacement value is less than the set value, the go gauge test is unsuccessful. If the detected displacement value is greater than or equal to the set value, the go gauge test is successful. The displacement sensor assembly records the current position and calculates the actual number of engagement turns, awaiting the next process. The above conversion method for the number of engagement turns is existing technology.

Claims

1. A thread go / no-go gauge testing device, characterized in that: It includes a go / no-go gauge inspection base (1), a go gauge inspection sleeve (2), a no-go gauge inspection sleeve (3), a displacement sensor assembly, and two torque sensors (4). The go / no-go gauge detection base (1) is slidably mounted on the worktable. Two torque sensors (4) are respectively installed in parallel on the go / no-go gauge detection base (1). The detection shaft of one of the torque sensors (4) is connected to the go gauge detection sleeve (2), and the detection shaft of the other torque sensor (4) is connected to the no-go gauge detection sleeve (3). The go / no-go gauge detection base (1) moves along the axial direction of the go gauge detection sleeve (2) and the no-go gauge detection sleeve (3), and the axial position of the go / no-go gauge detection base (1) is detected by the displacement sensor assembly. The go / no-go gauge testing base (1) is provided with a spring stop (7), the worktable is provided with a guide rod (8), the guide rod (8) is threaded with a limit nut (9), and the guide rod (8) passes through the spring stop (7). A spring (10) is sleeved on the guide rod (8) between the spring stop (7) and the limit nut (9). The go gauge test sleeve (2) is fitted with a go gauge test piece by screws, and the no-go gauge test sleeve (3) is fitted with a no-go gauge test piece by screws.

2. The thread go / no-go gauge testing device according to claim 1, characterized in that: The lower surface of the go / no-go gauge detection base (1) is provided with a slider, and the worktable is provided with a slide rail (5) that is slidably connected to the slider.

3. The thread go / no-go gauge testing device according to claim 1, characterized in that: Limiting blocks (6) are respectively provided on the front and rear sides of the worktable in the moving direction of the go / no-go gauge detection base (1).

4. The thread go / no-go gauge testing device according to claim 1, characterized in that: One end of each torque sensor (4) is mounted on the go / no-go gauge detection base (1) by screws. The other ends of the two torque sensors (4) are connected to the same fixing plate (11). A connecting post (12) is provided between the fixing plate (11) and the go / no-go gauge detection base (1). The connecting post (12) has a limiting head at one end near the go / no-go gauge detection base (1), and the other end passes through the fixing plate (11) and is provided with a locking nut (13).

5. The thread go / no-go gauge testing device according to claim 1, characterized in that: The displacement sensor assembly includes a movable part (14) mounted on the go / no-go gauge detection base (1) and a fixed part (15) mounted on the workbench, wherein the movable part (14) moves on the fixed part (15).

6. The thread go / no-go gauge testing device according to claim 1, characterized in that: The go gauge detection sleeve (2) and the no-go gauge detection sleeve (3) are respectively connected to the detection shaft of the corresponding torque sensor (4) via positioning beads (17).

Images