Intermittent motion locking mechanism, surface intermittent detection system and detection method

Abstract

The invention discloses an intermittent motion locking mechanism, a surface intermittent detection system and a detection method, and can solve the problem that in a gear intermittent transmission mechanism, when two mutually engaged incomplete gears are engaged again after being disengaged, correct engagement cannot occur. The position state of the driven default gear is accurately fixed at the moment when the driving meshing teeth are separated from the driven meshing teeth, so that the driving meshing teeth and the driven meshing teeth can be stably and accurately meshed again, and the accuracy of intermittent rotation of the multi-side part driven by the surface intermittent detection system is further ensured; therefore, accurate detection of the multi-side part is realized.

Description

Technical Field

[0001] This invention belongs to the technical field of gap rotation detection stage, specifically relating to an intermittent motion locking mechanism, a surface intermittent detection system, and a detection method. Background Technology

[0002] To achieve the specific function of intermittent rotation, the driving and driven gears in a gear meshing mechanism are not fully toothed around their circumference. They are normally fully toothed within a certain angular range of 360°, but toothless in other ranges. This results in incomplete tooth formation on the driving and driven gears. To ensure that the driving and driven gears can re-engage correctly during the reverse motion of the driving gear after disengagement, the circumferential position of the driven gear must remain fixed at the instant of disengagement. Under normal circumstances, theoretically, the driven gear should remain in its instantaneous position after complete disengagement. However, in practical engineering applications, fluctuations in hydraulic pressure within the gear mechanism, vibrations in the working environment, and other factors can all affect the instantaneous position of the driven gear after disengagement. Once the position of the driven gear changes, when the driving gear rotates in the opposite direction and meshes with the driven gear again, the position of the meshing teeth of the two gears changes, and the driving gear and driven gear can no longer mesh, causing the transmission function of the gear transmission mechanism to fail.

[0003] To address the problem of improper re-engagement when two partially meshed gears in an intermittent gear transmission mechanism disengage and then re-engage, this invention discloses an intermittent motion locking mechanism, a surface intermittent detection system, and a detection method. Summary of the Invention

[0004] This invention discloses an intermittent motion locking mechanism, a surface intermittent detection system, and a detection method, which can perform intermittent side positioning detection on parts with multiple sides and ensure intermittent positioning accuracy.

[0005] This invention is achieved through the following technical solution: A gear intermittent motion locking mechanism includes a driving default gear and a driven default gear meshing together. The driving default gear has several driving meshing teeth with different numbers of teeth detachably installed in layers, and the driven default gear has driven meshing teeth detachably installed. The axle of the driving default gear is connected to an axial lifting device, which is used to drive the driving default gear to move axially to switch the meshing connection between the driving meshing teeth with different numbers of teeth and the driven meshing teeth. A limiting wing plate is provided at the bottom of the driven default gear, and a locking hole is provided at the bottom of the driven default gear corresponding to a specific rotation angle. An elastic locking element is provided on the limiting wing plate corresponding to the locking hole.

[0006] To better realize the present invention, the elastic locking component further includes a return spring, a locking pin, a magnetic block, and an electromagnetic part. The limiting wing plate is provided with a mounting hole corresponding to the locking hole. The locking pin is slidably installed inside the mounting hole. A magnetic block is provided at the end of the locking pin away from the locking hole. An electromagnetic part is provided at the bottom of the mounting hole. The electromagnetic part is energized when the active meshing tooth and the driven meshing tooth are engaged, and de-energized when the active meshing tooth and the driven meshing tooth are separated. A return spring is coaxially provided between the magnetic block and the bottom of the mounting hole.

[0007] To better realize the present invention, a guide slope is provided at one end of the locking pin near the locking hole, and a guide sleeve is sleeved on the outside of the one end of the locking pin near the locking hole.

[0008] To better realize the present invention, the axial lifting device further includes an axial screw, a connecting disc, and a nut sleeve. The connecting disc is fixedly sleeved on the outside of the axle of the drive default gear. The nut sleeve is fixedly installed on the connecting disc. The nut sleeve is threadedly fitted onto the outside of the axial screw. The axial screw is arranged parallel to the axis of the drive default gear. A drive motor is provided at one end of the axial screw.

[0009] To better realize the present invention, the connecting plate is further provided with a guide hole, which is slidably connected to the guide post.

[0010] A surface intermittent inspection system includes a gear intermittent motion locking mechanism, an inspection table, a vision inspection device, and an end telescopic clamp. The inspection table is connected to the top of the axle of the driven default gear in the gear intermittent motion locking mechanism. A support frame is provided on the top of the inspection table, and an end telescopic clamp is provided at the center of the support frame. A vision inspection device is provided on the side wall of the support frame corresponding to the side of the part to be inspected. A radial sliding stage is provided on the top of the inspection table. The radial sliding stage is used to place the part to be inspected and move the part to be inspected to below the end telescopic clamp.

[0011] To better realize the present invention, the radial sliding stage further includes a sliding stage body and an electromagnetic adsorption part. A radial groove is provided on the detection stage, and the sliding stage body is slidably installed inside the radial groove. An electromagnetic adsorption part for electromagnetic adsorption of the part to be tested is provided on the sliding stage body.

[0012] A surface intermittent detection method, implemented based on a surface intermittent detection system, includes the following steps: Step 1: Place the part to be inspected on the radial sliding stage, move the part to be inspected to the underside of the end telescopic clamp using the radial sliding stage, and clamp the part to be inspected downwards using the end telescopic clamp. Step 2: Based on the number n sides of the part to be tested, adjust the meshing transmission ratio between the active meshing teeth in the active default gear and the driven meshing teeth on the driven default gear so that the driven default gear rotates 360° / n angles each time. Step 3: During the intermittent rotation of the inspection table driven by the driven default gear, a side image of the part to be inspected is captured by the vision inspection device and transmitted to an external computer. Step 4: Use an image recognition algorithm on an external computer to compare the surface features on the side of the part to be inspected with a standard image to determine whether the part is qualified.

[0013] Compared with the prior art, the present invention has the following advantages and beneficial effects: This invention solves the problem of incorrect meshing when two partially meshed gears in an intermittent gear transmission mechanism disengage and then re-mesh. It accurately fixes the position of the driven default gear at the instant the active meshing tooth disengages from the driven meshing tooth, thus ensuring that the active and driven meshing teeth can re-mesh smoothly and accurately. This further ensures the accuracy of the intermittent rotation of multi-sided parts driven by the intermittent surface detection system, enabling accurate detection of multi-sided parts. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a surface intermittent detection system; Figure 2 This is a schematic diagram of a gear intermittent motion locking mechanism; Figure 3 This is a top view of the intermittent surface inspection system; Figure 4 This is a schematic diagram of the axial lifting device. Figure 5 This is a schematic diagram of the elastic locking component.

[0015] Wherein: 1-Active default gear; 2-Driven default gear; 3-Limiting wing plate; 4-Elastic locking component; 5-Axial lifting device; 6-Detection table; 7-Vision inspection device; 8-End telescopic clamp; 9-Radial sliding table; 41-Reset spring; 42-Locking pin; 43-Magnetic block; 44-Electromagnetic part; 45-Guide sleeve; 51-Axial screw; 52-Connecting disc; 53-Nut sleeve; 54-Connecting disc; 91-Sliding table body; 100-Active meshing tooth; 200-Driven meshing tooth. Detailed Implementation

[0016] Example 1: This embodiment provides a gear intermittent motion locking mechanism, such as... Figure 2As shown, the device includes a driving default gear 1 and a driven default gear 2 that are meshed together. The driving default gear 1 has several driving meshing teeth 100 with different numbers of teeth that are detachably installed in layers. The driven default gear 2 has driven meshing teeth 200 that are detachably installed. The axle of the driving default gear 1 is connected to an axial lifting device 5. The axial lifting device 5 is used to drive the driving default gear 1 to move axially to switch the meshing connection between the driving meshing teeth 100 with different numbers of teeth and the driven meshing teeth 200. The bottom of the driven default gear 2 is provided with a limiting wing plate 3. The bottom of the driven default gear 2 is provided with a locking hole corresponding to a specific rotation angle. The limiting wing plate 3 is provided with an elastic locking member 4 corresponding to the locking hole.

[0017] The engaging driving gear 100 and driven gear 200 enable the driving default gear 1 to drive the driven default gear 2 to rotate intermittently at a specific angle. When the driving gear 100 disengages from the driven gear 200, the elastic locking key 4 extends into the locking hole to lock the position of the driven default gear 2. When the driving gear 100 re-engages with the driven gear 200, the elastic locking key 4 retracts, allowing the driven default gear 2 to rotate alongside the driving default gear 1.

[0018] When different transmission ratios are required, the axial lifting device 5 drives the driving default gear 1 to move axially, thereby enabling the driving meshing teeth 100 with different numbers of teeth on the driving default gear 1 to mesh with the driven meshing teeth 200.

[0019] A surface intermittent detection system, such as Figure 1 , Figure 3 As shown, the device includes a gear intermittent motion locking mechanism, a detection table 6, a vision inspection device 7, and an end telescopic clamp 8. The top of the axle of the driven default gear 2 in the gear intermittent motion locking mechanism is connected to the detection table 6. A support frame is provided on the top of the detection table 6, and the end telescopic clamp 8 is provided at the center of the support frame. The vision inspection device 7 is provided on the side wall of the support frame corresponding to the side of the part to be inspected. A radial sliding stage 9 is provided on the top of the detection table 6. The radial sliding stage 9 is used to place the part to be inspected and move the part to be inspected to below the end telescopic clamp 8.

[0020] The inspection station is located at the top center of the inspection table 6. An end telescopic clamp 8 is positioned above this station. After the part is moved to the inspection station via the radial sliding sleeve 9, the end telescopic clamp 8 extends downwards to press the top end face of the part firmly against it, without obstructing the side surface. Then, the inspection table 6 is intermittently rotated via a gear intermittent motion locking mechanism, and the side surface of the part is inspected by a vision inspection device 7. The end telescopic clamp 8 includes an axial cylinder and a flexible pressure head. The axial cylinder is mounted at the center of the support frame, and the flexible pressure head is located at the end of the axial cylinder's push rod. When the axial cylinder's push rod extends, it drives the flexible pressure head to press and fix the top end face of the part firmly.

[0021] A surface intermittent detection method, implemented based on a surface intermittent detection system, includes the following steps: Step 1: Place the part to be inspected on the radial sliding stage 9, move the part to be inspected to below the end telescopic clamp 8 through the radial sliding stage 9, and clamp the part to be inspected downward through the end telescopic clamp 8. Step 2: Based on the number of sides n of the part to be tested, adjust the meshing transmission ratio between the active meshing tooth 100 in the active default gear 1 and the driven meshing tooth 200 on the driven default gear 2, so that the driven default gear 2 rotates by an angle of 360° / n each time; for example, if the part has a structure with four sides, then the driven default gear 2 rotates by 360° / 4=90° each time.

[0022] Step 3: During the intermittent rotation of the inspection table 6 driven by the driven default gear 2, the side image of the part to be inspected is captured by the vision inspection device 7 and transmitted to an external computer. Step 4: Use an image recognition algorithm on an external computer to compare the surface features on the side of the part to be inspected with a standard image to determine whether the part is qualified.

[0023] Example 2: This embodiment discloses a gear intermittent motion locking mechanism, which is an improvement on Embodiment 1, such as... Figure 5 As shown, the elastic locking component 4 includes a return spring 41, a locking pin 42, a magnetic block 43, and an electromagnetic part 44. The limiting wing plate 3 has a mounting hole corresponding to the locking hole. The locking pin 42 is slidably installed inside the mounting hole. The magnetic block 43 is provided at the end of the locking pin 42 away from the locking hole. The electromagnetic part 44 is provided at the bottom of the mounting hole. The electromagnetic part 44 is energized when the active meshing tooth 100 and the driven meshing tooth 200 are engaged, and de-energized when the active meshing tooth 100 and the driven meshing tooth 200 are separated. The return spring 41 is coaxially arranged between the magnetic block 43 and the bottom of the mounting hole.

[0024] When the driving gear 100 engages with the driven gear 200, the electromagnetic unit 44 is energized and generates a magnetism opposite to that of the magnetic block 43. At this time, the electromagnetic unit 44 attracts the magnetic block 43, causing the magnetic block 43 to drive the locking pin 42 to slide away from the locking hole until the locking pin 42 disengages from the locking hole, thus releasing the lock on the driven default gear 2. When the driving gear 100 disengages from the driven gear 200, the electromagnetic unit 44 is de-energized and loses its magnetism. At this time, the return spring 41 returns to its original state from its compressed state, causing the locking pin 42 to slide closer to the locking hole until the locking pin 42 extends into the locking hole, thus locking the driven default gear 2. Through the above configuration, the position of the driven default gear 2 can be locked the instant the driving gear 100 disengages from the driven gear 200.

[0025] Furthermore, a guide slope is provided at one end of the locking pin 42 near the locking hole, and a guide sleeve 45 is fitted over the outer end of the locking pin 42 near the locking hole. By providing the guide sleeve 45, the locking pin 42 can slide smoothly along a predetermined path during extension and retraction, and the slope at the end of the locking pin 42 can also ensure that the locking pin 42 can be smoothly inserted into the locking hole.

[0026] The rest of this embodiment is the same as that of Embodiment 1, so it will not be described again.

[0027] Example 3: This embodiment discloses a gear intermittent motion locking mechanism, which is optimized based on embodiment 1 or 2, such as... Figure 4 As shown, the axial lifting device 5 includes an axial screw 51, a connecting plate 52, and a nut sleeve 53. The connecting plate 52 is fixedly sleeved on the outside of the axle of the drive default gear 1. The nut sleeve 53 is fixedly installed on the connecting plate 52. The nut sleeve 53 is threadedly fitted onto the outside of the axial screw 51. The axial screw 51 is arranged parallel to the axis of the drive default gear 1. A drive motor is provided at one end of the axial screw 51.

[0028] The drive motor drives the axial screw 51 to rotate, which in turn drives the nut sleeve 53 to move the connecting plate 52 axially. The connecting plate 52 then drives the active default gear 1 to move axially, so as to switch the active meshing teeth 100 with different numbers of teeth to mesh with the driven meshing teeth 200.

[0029] Furthermore, the connecting plate 52 is provided with a guide hole, which is slidably connected to the guide post 54. The axial movement of the drive default gear 1 is guided by the sliding connection between the guide hole and the guide post 54.

[0030] The rest of this embodiment is the same as that of embodiment 1 or 2, so it will not be described again.

[0031] Example 4: This embodiment discloses a surface intermittent detection system, which is an improvement on any one of embodiments 1-3, such as... Figure 3 As shown, the radial sliding stage 9 includes a sliding stage body 91 and an electromagnetic adsorption part. The detection stage 6 is provided with a radial sliding groove. The sliding stage body 91 is slidably installed inside the radial sliding groove. The sliding stage body 91 is provided with an electromagnetic adsorption part for electromagnetic adsorption of the part to be tested.

[0032] A radial cylinder is provided at one end of the sliding stage body 91. The radial cylinder drives the sliding stage body 91 to slide inside the radial groove. After the part is placed on the top of the sliding stage body 91, the part is attracted and fixed by the electromagnetic adsorption part.

[0033] The rest of this embodiment is the same as any one of embodiments 1-3, so it will not be described again.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A gear intermittent motion locking mechanism, comprising a driving default gear (1) and a driven default gear (2) meshing together, characterized in that, The active default gear (1) is detachably mounted with several active meshing teeth (100) of different numbers of teeth in layers, and the driven default gear (2) is detachably mounted with driven meshing teeth (200); the axle of the active default gear (1) is connected to the axial lifting device (5), which is used to drive the active default gear (1) to move axially to switch the active meshing teeth (100) of different numbers of teeth to mesh with the driven meshing teeth (200); the bottom of the driven default gear (2) is provided with a limiting wing plate (3), and the bottom of the driven default gear (2) is provided with a locking hole corresponding to a specific rotation angle, and the limiting wing plate (3) is provided with an elastic locking element (4) corresponding to the locking hole.

2. The gear intermittent motion locking mechanism according to claim 1, characterized in that, The elastic locking component (4) includes a return spring (41), a locking pin (42), a magnetic block (43), and an electromagnetic part (44). The limiting wing plate (3) is provided with a mounting hole corresponding to the locking hole. The locking pin (42) is slidably installed inside the mounting hole. The magnetic block (43) is provided at the end of the locking pin (42) away from the locking hole. The electromagnetic part (44) is provided at the bottom of the mounting hole. The electromagnetic part (44) is energized when the active meshing tooth (100) and the driven meshing tooth (200) are engaged, and de-energized when the active meshing tooth (100) and the driven meshing tooth (200) are separated. The return spring (41) is coaxially provided between the magnetic block (43) and the bottom of the mounting hole.

3. The gear intermittent motion locking mechanism according to claim 2, characterized in that, The locking pin (42) has a guide slope at one end near the locking hole, and a guide sleeve (45) is sleeved on the outside of the locking pin (42) near the locking hole.

4. A gear intermittent motion locking mechanism according to any one of claims 1-3, characterized in that, The axial lifting device (5) includes an axial screw (51), a connecting plate (52), and a nut sleeve (53). The connecting plate (52) is fixedly sleeved on the outside of the axle of the drive default gear (1). The nut sleeve (53) is fixedly installed on the connecting plate (52). The nut sleeve (53) is threadedly fitted on the outside of the axial screw (51). The axial screw (51) is arranged parallel to the axis of the drive default gear (1). A drive motor is provided at one end of the axial screw (51).

5. A gear intermittent motion locking mechanism according to claim 4, characterized in that, The connecting plate (52) is provided with a guide hole, which is slidably connected to the guide post (54).

6. A surface intermittent detection system, comprising a gear intermittent motion locking mechanism, characterized in that, It also includes a testing table (6), a vision inspection device (7), and an end telescopic clamp (8). The top of the axle of the driven default gear (2) in the gear intermittent motion locking mechanism is connected to the testing table (6). A support frame is provided on the top of the testing table (6). An end telescopic clamp (8) is provided at the center of the support frame. A vision inspection device (7) is provided on the side wall of the support frame corresponding to the side of the part to be inspected. A radial sliding stage (9) is provided on the top of the testing table (6). The radial sliding stage (9) is used to place the part to be inspected and move the part to be inspected to below the end telescopic clamp (8).

7. The intermittent surface detection system according to claim 6, characterized in that, The radial sliding stage (9) includes a sliding stage body (91) and an electromagnetic adsorption part. The detection stage (6) is provided with a radial groove. The sliding stage body (91) is slidably installed inside the radial groove. The sliding stage body (91) is provided with an electromagnetic adsorption part for electromagnetic adsorption of the part to be tested.

8. A method for intermittent surface detection, implemented based on the intermittent surface detection system of claim 6 or 7, characterized in that, Includes the following steps: Step 1: Place the part to be tested on the radial sliding stage (9), move the part to be tested to the bottom of the end telescopic clamp (8) through the radial sliding stage (9), and clamp the part to be tested downward through the end telescopic clamp (8); Step 2: Based on the number n sides of the part to be tested, adjust the meshing transmission ratio between the active meshing teeth (100) in the active default gear (1) and the driven meshing teeth (200) on the driven default gear (2) so that the driven default gear (2) rotates by 360° / n angle each time. Step 3: During the intermittent rotation of the inspection table (6) driven by the driven default gear (2), the side image of the part to be inspected is captured by the vision inspection device (7) and transmitted to an external computer. Step 4: Use an image recognition algorithm on an external computer to compare the surface features on the side of the part to be inspected with a standard image to determine whether the part is qualified.

Images