Optical measuring device for thread dimensions of a motor shaft

Abstract

The application discloses a motor rotating shaft thread size optical measuring device and relates to the field of optical measurement, which solves the problem that the existing motor rotating shaft thread size measuring device is difficult to simulate the thread running state in the actual use process and is difficult to flexibly detect threads of different sizes and different models. The device comprises a machine body, a device table, a conveying mechanism and a detection mechanism. The detection mechanism comprises detection heads, optical measuring heads and control components. The motor rotating shaft is fixed and conveyed by the conveying mechanism. During the movement of the motor rotating shaft, the control components automatically dock multiple detection heads into the thread grooves. The detection mechanism can detect the size, spacing and smoothness of rotation of the thread grooves by multiple detection heads synchronously. In the detection process, the surrounding optical measuring heads comprehensively detect the positions around the thread grooves, improving the detection efficiency and comprehensiveness and accuracy of the detection results.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical measurement technology, in particular to a motor rotating shaft thread size optical measurement device. BACKGROUND

[0002] The motor rotating shaft is an important component of motor power output. Some motors that need to transmit power through threaded connection of transmission components (such as pulleys, shaft couplings, etc.) will have threads machined at the end of the rotating shaft for the installation of fasteners or connecting pieces to achieve power transmission. Because the accuracy of the thread size directly affects the fitting accuracy and reliability of the connecting piece, the thread size of the motor rotating shaft needs to be optically measured before the motor rotating shaft is shipped to determine whether it is qualified.

[0003] The existing motor rotating shaft thread size optical measurement device only scans the surface of the thread by using an optical measuring instrument when in use, which is difficult to simulate the running state of the thread in the use process, and there may be slight errors between the detected data and the actual use state. The existing physical measurement equipment is difficult to flexibly adjust and detect for threads of different sizes and different tapers, and the detection efficiency is low, and the use is not flexible and convenient. SUMMARY

[0004] The purpose of the present application is to provide a motor rotating shaft thread size optical measurement device that facilitates simultaneous optical detection and simulated thread running detection, and improves the comprehensiveness and accuracy of detection, to solve the problems raised in the background art.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a motor rotating shaft thread size optical measurement device, comprising a machine body, a conveying mechanism and a detection mechanism, the machine body is fixedly connected with a device table, the conveying mechanism is installed on the machine body for fixing and conveying the motor rotating shaft, the detection mechanism comprises a plurality of detection heads installed on the device table, the detection head is fixedly connected with an optical measurement head, the device table is provided with a control member capable of automatically docking a plurality of detection heads into the thread groove during the movement of the motor rotating shaft, the detection mechanism can detect the size, spacing and smoothness of rotation of the thread groove through a plurality of detection heads, and the surrounding optical measurement head can perform comprehensive optical detection on the surrounding position of the thread groove during detection, facilitating simultaneous optical detection and simulated thread running detection, and improving the comprehensiveness and accuracy of detection.

[0006] Preferably, the control piece comprises a bottom plate mounted on the device table, a guide groove is formed in the bottom plate, a plurality of guide blocks are slidably connected in the guide groove, threaded holes are formed in the side surfaces of the guide blocks, threaded pipes are threadedly connected in the threaded holes, first springs are fixedly connected to the ends of the threaded pipes away from the threaded holes, the ends of the first springs are fixedly connected with the detection heads, and sliding pieces for controlling the plurality of guide blocks to slide one by one are arranged in the threaded pipes, so that the plurality of detection heads can be automatically butted into the threaded grooves during the movement of the motor shaft.

[0007] Preferably, the sliding piece comprises a guide rod fixedly mounted on the detection head, a limiting groove is formed in the threaded pipe, a limiting block is slidably connected in the limiting groove, the guide rod is slidably connected with the inner wall of the threaded pipe and is fixedly connected with the limiting block, a second spring is fixedly connected in the threaded hole, a pushing disc is fixedly connected to the end of the second spring, a pushing rod is fixedly connected to the pushing disc, the pushing rod penetrates through the guide block and is slidably connected with the inner wall of the guide block, and a regulating piece for regulating the sliding state of the guide block is arranged on the bottom plate, so as to control the plurality of guide blocks to slide one by one.

[0008] Preferably, the regulating piece comprises a control plate slidably connected with the top surface of the bottom plate in the horizontal direction, a first sliding groove is formed in the control plate, a plurality of second sliding grooves are uniformly formed in the control plate, one end of each of the plurality of second sliding grooves is in communication with the first sliding groove, a sliding rod fixedly connected to the end of the pushing rod away from the pushing disc is slidably connected with the inner walls of the first sliding groove and the second sliding grooves, a first electric telescopic rod is fixedly connected to the bottom plate, and the telescopic end of the first electric telescopic rod is fixedly connected with the side surface of the control plate, so as to regulate the sliding state of the guide block.

[0009] Preferably, the detection mechanism further comprises a rotating disc fixedly mounted on the bottom surface of the bottom plate, the rotating disc is rotatably connected with the device table, a connecting buckle is fixedly connected to the side surface of the bottom plate, a driving block is slidably connected to the bottom plate in the horizontal direction, the driving block is rotatably connected with the connecting buckle, a second electric telescopic rod is fixedly connected to the bottom plate, and the telescopic end of the second electric telescopic rod is fixedly connected with the side surface of the driving block, so as to detect the size, spacing and smooth degree of rotation of the threaded groove by the plurality of detection heads synchronously, and comprehensively optically detect the positions around the threaded groove by the surrounding optical measurement heads during the detection.

[0010] Preferably, the control panel is fixedly connected with a fixing frame, the fixing frame is slidably connected with a sliding frame in the horizontal direction, the sliding frame is slidably connected with a lifting rod in the vertical direction, the bottom of the lifting rod is fixedly connected with a limiting frame, the top of the plurality of sliding rods can be inserted into the inner wall of the limiting frame, so that the plurality of sliding rods can be pulled into the corresponding second sliding groove for limiting during resetting.

[0011] Preferably, the side surface of the guide block is fixedly connected with a laser range finder, the laser range finder is used for measuring the distance between the adjacent two groups of guide blocks, so as to facilitate the judgment of the thread distance of the thread groove.

[0012] Preferably, the limiting frame is fixedly connected with a magnet block, and the fixing frame and the sliding frame are made of magnetic material, so as to facilitate the adsorption and limiting of the position of the limiting frame.

[0013] Preferably, the conveying mechanism comprises a driving table capable of driving sliding on the machine body in the horizontal direction, a rotating ring is rotatably connected with the driving table, a plurality of electric clamping blocks for clamping the motor rotating shaft are arranged on the rotating ring, an outer gear ring is fixedly connected with the outer wall of the rotating ring, a driving motor is fixedly connected in the driving table, a driving gear is coaxially fixedly connected with the output end of the driving motor, and the driving gear is engaged with the outer gear ring, so as to facilitate the fixing and conveying of the motor rotating shaft.

[0014] Preferably, the two sides of the guide block and the sliding rod are respectively fixedly connected with a pressure sensor for detecting the change of stress during operation, so as to facilitate the detection of the change of stress during operation.

[0015] Compared with the prior art, the beneficial effects of the present application are:

[0016] The motor rotating shaft thread size optical measurement device provided by the present application solves the problems that the existing motor rotating shaft thread size measurement device is difficult to simulate the thread running state in the actual use process and is difficult to detect different sizes and different models of threads flexibly, the motor rotating shaft is fixed and conveyed by the conveying mechanism, a plurality of detection heads are automatically docked into the thread groove by the control member during the movement of the motor rotating shaft, the detection mechanism can detect the size, distance and smooth degree of rotation of the thread groove through the plurality of detection heads, and the surrounding optical measurement heads can comprehensively detect the surrounding position of the thread groove during detection, thereby improving the detection efficiency and comprehensiveness and accuracy of the detection result. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0018] Figure 2It is the schematic diagram of the internal structure of the machine body of the present application;

[0019] Figure 3 It is the schematic diagram of the internal structure of the machine body of the present application; Figure 2 It is the enlarged view of area A in the middle;

[0020] Figure 4 It is the schematic diagram of the partial structure of the conveying mechanism of the present application;

[0021] Figure 5 It is the top view of the partial structure of the detection mechanism of the present application;

[0022] Figure 6 It is the top view of the partial structure of the detection mechanism of the present application; Figure 5 It is the enlarged view of area B in the middle;

[0023] Figure 7 It is the sectional view of the partial structure of the detection mechanism of the present application;

[0024] Figure 8 It is the sectional view of the partial structure of the detection mechanism of the present application; Figure 7 It is the enlarged view of area C in the middle;

[0025] Figure 9 It is the sectional view of the partial structure of the detection mechanism of the present application; Figure 7 It is the enlarged view of area D in the middle;

[0026] Figure 10 It is the exploded view of the partial structure of the control member of the present application;

[0027] Figure 11 It is the exploded view of the partial structure of the control member of the present application; Figure 10 It is the enlarged view of area E in the middle;

[0028] Figure 12 It is the exploded view of the partial structure of the detection mechanism of the present application.

[0029] In the figure: 1-machine body; 2-device table; 3-detection head; 4-optical measurement head; 5-control member; 6-bottom plate; 7-guiding groove; 8-guiding block; 9-threaded hole; 10-threaded pipe; 11-first spring; 12-sliding member; 13-guiding rod; 14-limiting block; 15-second spring; 16-pushing disc; 17-pushing rod; 18-regulating member; 19-control panel; 20-first sliding groove; 21-second sliding groove; 22-sliding rod; 23-first electric telescopic rod; 24-rotating disc; 25-connection buckle; 26-driving block; 27-second electric telescopic rod; 28-fixing frame; 29-sliding frame; 30-lifting rod; 31-limiting frame; 32-laser range finder; 33-magnet block; 34-driving table; 35-rotating ring; 36-electric clamping block; 37-outer tooth ring; 38-driving motor; 39-driving gear; 40-pressure sensor; 41-motor rotating shaft; 42-threaded groove; 43-limiting groove. DETAILED DESCRIPTION

[0030] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0031] Please refer to Figures 1-12 The present application provides a technical solution: a motor rotating shaft thread size optical measurement device, comprising a machine body 1, a conveying mechanism and a detection mechanism, the machine body 1 is fixedly connected with a device table 2, the conveying mechanism is installed on the machine body 1, used for fixing and conveying the motor rotating shaft 41, the detection mechanism comprises a plurality of detection heads 3 installed on the device table 2, the detection head 3 is fixedly connected with an optical measurement head 4, the device table 2 is provided with a control member 5 capable of automatically docking the plurality of detection heads 3 into the thread groove 42 during the movement of the motor rotating shaft 41, the detection mechanism can detect the size, spacing and smooth degree of rotation of the thread groove 42 through the plurality of detection heads 3 synchronously, and the surrounding optical measurement head 4 can comprehensively optically detect the surrounding position of the thread groove 42 during the detection.

[0032] The control member 5 comprises a bottom plate 6 installed on the device table 2, the bottom plate 6 is provided with a guide groove 7, a plurality of guide blocks 8 are slidably connected in the guide groove 7, the side surface of the guide block 8 is fixedly connected with a laser range finder 32, the laser range finder 32 is used for measuring the spacing between the adjacent two groups of guide blocks 8, the side surface of the guide block 8 is provided with a threaded hole 9, the threaded hole 9 is threadedly connected with a threaded tube 10, the end of the threaded tube 10 away from the threaded hole 9 is fixedly connected with a first spring 11, one end of the first spring 11 is fixedly connected with the detection head 3, the threaded tube 10 is provided with a sliding member 12 for controlling the plurality of guide blocks 8 to slide one by one.

[0033] The sliding member 12 comprises a guide rod 13 fixedly installed on the detection head 3, the threaded tube 10 is provided with a limiting groove 43, a limiting block 14 is slidably connected in the limiting groove 43, the guide rod 13 is slidably connected with the inner wall of the threaded tube 10 and is fixedly connected with the limiting block 14, the threaded hole 9 is fixedly connected with a second spring 15, one end of the second spring 15 is fixedly connected with a pushing disc 16, the pushing disc 16 is fixedly connected with a pushing rod 17, the pushing rod 17 penetrates through the guide block 8 and is slidably connected with the inner wall of the guide block 8, the bottom plate 6 is provided with a regulating member 18 for regulating the sliding state of the guide block 8.

[0034] The regulating member 18 comprises a control plate 19 slidably connected with the top surface of the bottom plate 6 in the horizontal direction, the control plate 19 is provided with a first sliding groove 20, a plurality of second sliding grooves 21 are uniformly arranged on the control plate 19, one end of the plurality of second sliding grooves 21 is in communication with the first sliding groove 20, the end, away from the push disc 16, of the push rod 17 is fixedly connected with a sliding rod 22 capable of being slidably connected with the inner walls of the first sliding groove 20 and the second sliding grooves 21, the two sides of the guide block 8 and the sliding rod 22 are respectively fixedly connected with pressure sensors 40 for detecting the change of stress in the running process, the bottom plate 6 is fixedly connected with a first electric telescopic rod 23, and the telescopic end of the first electric telescopic rod 23 is fixedly connected with the side surface of the control plate 19.

[0035] The detection mechanism further comprises a rotating disc 24 fixedly installed on the bottom surface of the bottom plate 6, the rotating disc 24 is rotationally connected with the device table 2, the side surface of the bottom plate 6 is fixedly connected with a connecting buckle 25, the bottom plate 6 is slidably connected with a driving block 26 in the horizontal direction, the driving block 26 is rotationally connected with the connecting buckle 25, the bottom plate 6 is fixedly connected with a second electric telescopic rod 27, the telescopic end of the second electric telescopic rod 27 is fixedly connected with the side surface of the driving block 26, the control plate 19 is fixedly connected with a fixing frame 28, the fixing frame 28 is slidably connected with a sliding frame 29 in the horizontal direction, the sliding frame 29 is slidably connected with a lifting rod 30 in the vertical direction, the bottom of the lifting rod 30 is fixedly connected with a limiting frame 31, the top ends of the plurality of sliding rods 22 can be inserted with the inner wall of the limiting frame 31, the limiting frame 31 is fixedly connected with a magnet block 33, and the fixing frame 28 and the sliding frame 29 are made of magnetic materials.

[0036] The conveying mechanism comprises a driving table 34 capable of driving sliding in the horizontal direction on the machine body 1, the driving table 34 is rotationally connected with a rotating ring 35, the rotating ring 35 is provided with a plurality of electric clamping blocks 36 for clamping the motor shaft 41, the outer wall of the rotating ring 35 is fixedly connected with an outer gear ring 37, the driving table 34 is fixedly connected with a driving motor 38 in the inside, the output end of the driving motor 38 is coaxially fixedly connected with a driving gear 39, and the driving gear 39 is engaged with the outer gear ring 37.

[0037] In the embodiment, the motor rotating shaft 41 to be detected is fixed in the middle of the rotating ring 35 and clamped and fixed by the electric clamp block 36. A detection head 3 with appropriate size is selected, the width, depth and arc of the end of the detection head 3 need to match the required thread groove 42, the detection head 3 is screwed into the thread hole 9 with the corresponding thread pipe 10 to be installed and fixed. In the initial state, the plurality of guide blocks 8 are in close contact with each other and are located at one end of the guide groove 7. At this time, the positions of the plurality of sliding rods 22 are at the junction of the first sliding groove 20 and the second sliding groove 21. By controlling the sliding of the sliding frame 29, the limiting frame 31 is moved to the top end of the sliding rod 22, and then the limiting frame 31 is controlled to move downward, the top of the plurality of sliding rods 22 is clamped, and then the limiting frame 31 is pulled horizontally to make the magnet block 33 slide horizontally to the position of being attracted to the fixed frame 28 to complete the preliminary limiting. At this time, the plurality of sliding rods 22 are pulled into the second sliding groove 21, so that the guide block 8 cannot slide horizontally along the guide groove 7 at this time.

[0038] Thereafter, by controlling the horizontal sliding of the driving table 34 above the machine body 1, the motor rotating shaft 41 is horizontally moved. During this process, the side wall of the motor rotating shaft 41 continuously touches the top end of the detection head 3. Since the detection head 3 cannot be driven at this time, it can only slide along the guide rod 13 to expand and contract until the top end position of the thread groove 42 engages with the frontmost detection head 3. At this time, the limiting frame 31 is controlled to move upward by the lifting rod 30 to release the limiting of the plurality of sliding rods 22. At this time, the frontmost detection head 3 is inserted into the thread groove 42, so that the limiting block 14 cannot push the push plate 16 and the push rod 17 to move. Under the driving of the second spring 15, the push rod 17 is reset to slide the sliding rod 22 into the first sliding groove 20, so that the sliding rod 22 can slide along the first sliding groove 20. At this time, the guide block 8 can slide horizontally along the guide groove 7. The motor rotating shaft 41 continues to move forward to drive the detection head 3 and the guide block 8 to move. At this time, the adjacent detection head 3 cannot be clamped into the thread groove 42, so that the side wall of the motor rotating shaft 41 applies a large pushing force to the detection head 3 to push the guide rod 13, and the limiting block 14 pushes the push plate 16 and the push rod 17 to slide at this time, compresses the second spring 15, and the sliding rod 22 on the push rod 17 is still limited in the second sliding groove 21. Until the detection head 3 on the guide block 8 is inserted into the corresponding thread groove 42, the second spring 15 is reset to make the sliding rod 22 enter the first sliding groove 20 to release the limiting. In this way, the plurality of detection heads 3 can be sequentially slid, and during the sliding, the detection head 3 needs to be completely inserted into the thread groove 42 to slide. Finally, all the detection heads 3 are uniformly distributed at the equally spaced positions in the thread groove 42, without the need for manual adjustment of the position of the detection head 3. The device can automatically adjust the position of the detection head 3 and complete the connection during the horizontal movement of the motor rotating shaft 41, with high operation efficiency.

[0039] When all the detection heads 3 are uniformly distributed in the thread groove 42, the distance between adjacent guide blocks 8 can be detected by the laser range finder 32 on the guide block 8. When the distance is inconsistent, it indicates that the thread pitch of the thread groove 42 is not uniform. The driving motor 38 can also drive the driving gear 39 to rotate the outer gear ring 37, so that the rotating ring 35 drives the motor shaft 41 to rotate. In the process of rotation, the details in the thread groove 42 can be detected by the optical measuring head 4 on the detection head 3, which improves the comprehensiveness and accuracy of detection. At the same time, in the process of rotation, multiple detection heads 3 will continue to slide at equal intervals in the thread groove 42. When the measured distance between guide blocks 8 is inconsistent, it indicates that the detection result is unqualified. In the process of rotation of the motor shaft 41, the detection head 3 is driven by the thread groove 42 to slide horizontally. In this process, by reading the pressure sensor 40 on the sliding rod 22, the change of the force of the detection head 3 in the process of abutting against the inner wall of the thread groove 42 is obtained, so as to judge whether the depth of the thread groove 42 meets the standard. The pressure sensor 40 on both sides of the guide block 8 senses the change of the thrust intensity of the detection head 3 and the thread pipe 10 in the process of driving force of the thread groove 42. When the thrust is relatively uniform and stable, it indicates that the smoothness of the thread groove 42 is better. When the intensity continues to fluctuate and is not uniform, it indicates that the thread groove 42 is not smooth enough.

[0040] It is worth noting that: the device can also adjust the position of the driving block 26 through the second electric telescopic rod 27, so that the connecting buckle 25 drives the bottom plate 6 to adjust the angle around the rotating disc 24, change the inclination angle of multiple detection heads 3, and detect straight threads or different inclination angles of tapered threads. The detection steps of tapered threads are not repeated here. In the process of selecting appropriate detection heads 3, due to the different sizes of the detection heads 3, the pushing strength of the pushing disc 16 will also be different during installation, which will change the position of the sliding rod 22. Therefore, the position of the control plate 19 needs to be adjusted by the first electric telescopic rod 23, so as to change the distance between the first sliding groove 20 and the guide block 8, so that the sliding rod 22 can smoothly slide horizontally in the first sliding groove 20 when the detection head 3 is inserted into the thread groove 42.

[0041] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0042] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, and it is intended that the scope of the application be limited solely by the scope of the appended claims and the equivalents thereof.

Claims

1. An optical measurement device for thread dimensions of a rotating shaft of an electric machine, characterized in that, Include: Machine body (1), the device table (2) is fixedly connected on the machine body (1); Further include: Conveying mechanism, the conveying mechanism is installed on the machine body (1), for fixing and conveying motor shaft (41); Detection mechanism, the detection mechanism includes multiple groups of detection heads (3) installed on the device table (2), the optical measuring head (4) is fixedly connected on the detection head (3), the control member (5) capable of automatically butting multiple groups of detection heads (3) into the thread groove (42) during the movement of motor shaft (41) is arranged on the device table (2), the detection mechanism can detect the size, spacing and rotation smooth degree of thread groove (42) by multiple groups of detection heads (3) synchronously, and the surrounding optical measuring head (4) is used for comprehensive optical detection on the surrounding position of thread groove (42) during detection; The control member (5) includes the bottom plate (6) installed on the device table (2), the guide groove (7) is formed in the bottom plate (6), multiple guide blocks (8) are slidably connected in the guide groove (7), the side surface of the guide block (8) is provided with a threaded hole (9), the threaded hole (9) is threadedly connected with a threaded tube (10), the first spring (11) is fixedly connected to the end of the threaded tube (10) away from the threaded hole (9), one end of the first spring (11) is fixedly connected with the detection head (3), the threaded tube (10) is provided with a sliding member (12) for controlling the sliding of multiple guide blocks (8) one by one; The sliding member (12) includes a guide rod (13) fixedly installed on the detection head (3), the threaded tube (10) is provided with a limiting groove (43), the limiting groove (43) is slidably connected with a limiting block (14), the guide rod (13) is slidably connected with the inner wall of the threaded tube (10) and is fixedly connected with the limiting block (14), the second spring (15) is fixedly connected in the threaded hole (9), one end of the second spring (15) is fixedly connected with a push disc (16), the push disc (16) is fixedly connected with a push rod (17), the push rod (17) penetrates through the guide block (8) and is slidably connected with the inner wall of the guide block (8), the bottom plate (6) is provided with a regulating member (18) for regulating the sliding state of the guide block (8). The control panel (19) is fixedly connected with a fixing frame (28), the fixing frame (28) is slidably connected with a sliding frame (29) in the horizontal direction, the sliding frame (29) is slidably connected with a lifting rod (30) in the vertical direction, and the bottom of the lifting rod (30) is fixedly connected with a limiting frame (31); the top end of each of the plurality of sliding rods (22) can be inserted into the inner wall of the limiting frame (31). The side surface of the guide block (8) is fixedly connected with a laser range finder (32), and the laser range finder (32) is used to measure the distance between two adjacent guide blocks (8). The limiting frame (31) is fixedly connected with a magnet block (33), and the fixing frame (28) and the sliding frame (29) are made of a magnetic material.

2. The optical measurement device of claim 1, wherein: The conveying mechanism comprises a driving table (34) capable of driving sliding on the machine body (1) in the horizontal direction, a rotating ring (35) rotatably connected to the driving table (34), a plurality of electric clamping blocks (36) for clamping the motor shaft (41) provided on the rotating ring (35), an outer gear ring (37) fixedly connected to the outer wall of the rotating ring (35), a driving motor (38) fixedly connected in the driving table (34), a driving gear (39) coaxially fixedly connected to the output end of the driving motor (38), and the driving gear (39) is engaged with the outer gear ring (37).

3. The optical measurement device of claim 1, wherein: The two sides of the guide block (8) and the sliding rod (22) are respectively fixedly connected with a pressure sensor (40) for detecting the change of stress during operation.

4. The optical measurement device of claim 1, wherein: ​ 5. The optical measurement device of claim 1, wherein: ​

Images