Trapezoidal lead screw verticality detection device

Abstract

The invention relates to the technical field of trapezoidal lead screw detection, in particular to a trapezoidal lead screw perpendicularity detection device. Comprising a rack, a self-adaptive clamping mechanism, a fine detection mechanism and a visual detection mechanism, the rack comprises a mounting assembly and a rotary driving assembly, and the mounting assembly comprises a first fixing frame, a first lifting frame, a mounting top plate, a three-jaw chuck and a mounting base; the self-adaptive clamping mechanism comprises a second lifting frame, a clamping assembly, a clamping driving assembly, an elastic locking assembly and a second linear pushing device, the elastic locking assembly is installed on the clamping assembly, and the fine detection mechanism comprises a first linear pushing device, a first installation frame, an accurate detection assembly and a horizontal fine adjustment device. The horizontal fine adjustment device is horizontally arranged at the top end of the first installation frame and is in transmission connection with the accurate detection assembly. The device realizes the positioning, clamping and detection operation of the trapezoid lead screw, meets the detection requirements of trapezoid lead screws of different specifications, and can improve the production detection efficiency in the large-scale verticality detection process.

Description

Technical Field

[0001] The invention relates to the technical field of trapezoidal lead screw detection, and in particular to a trapezoidal lead screw verticality detection device. Background Art

[0002] The verticality detection of the lead screw can ensure the transmission accuracy, extend the service life and improve the system reliability. The verticality that meets the requirements can reduce the equipment failure caused by the poor or abnormal movement of the lead screw and enhance the reliability of the whole system. The position for measuring the verticality of the lead screw is usually the part where the lead screw and the nut match.

[0003] When testing verticality, the existing technology usually uses the impact measurement method. However, for large-sized and relatively high-precision lead screws, such as the lead screws in some large industrial equipment, it may exceed the measurement range of the image measuring instrument, or the measurement efficiency is low. In existing equipment, manual auxiliary loading is usually required, and automatic continuous production is not possible. When measuring lead screws of different sizes, the same equipment needs to replace the fixture and measurement position. The operation is cumbersome and the scope of application is small. It is impossible to accurately and quickly test multiple models of products. Summary of the invention

[0004] Based on this, it is necessary to provide a trapezoidal lead screw verticality detection device to address the existing technical problems.

[0005] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0006] The present invention provides a trapezoidal lead screw verticality detection device, comprising a frame, an adaptive clamping mechanism, a refined detection mechanism and a visual detection mechanism, and also comprising a detection object trapezoidal lead screw clamped by the adaptive clamping mechanism, the trapezoidal lead screw comprising a lead screw threaded rod and a lead screw nut, the frame comprising a mounting assembly and a rotation drive assembly, the mounting assembly comprising a first fixed frame, a first lifting frame, a mounting top plate, a three-jaw chuck and a mounting base, the first fixed frame is fixedly mounted on the frame, the first lifting frame can be lifted and lowered and is arranged directly above the first fixed frame, the mounting top plate is fixedly mounted on the first lifting frame, the three-jaw chuck is arranged on the mounting top plate, the mounting base is fixedly mounted on the first fixed frame, the lead screw threaded rod can be vertically rotatable and is arranged between the mounting top plate and the mounting base, the rotation drive assembly is fixedly mounted on the mounting top plate and is transmission-connected to the lead screw threaded rod, the adaptive clamping mechanism comprises a second lifting frame, a clamping mechanism The second lifting frame is located between the first lifting frame and the mounting base, the second linear pusher is mounted on the mounting base, the output end of the second linear pusher is fixedly connected to the second lifting frame, the clamping assembly and the clamping drive assembly are both mounted on the second lifting frame, the clamping drive assembly is transmission-connected to the clamping assembly, the elastic locking assembly is mounted on the clamping assembly, the refined detection mechanism includes a first linear pushing device, a first mounting frame, a precise detection assembly and a horizontal fine-tuning device, the first linear pushing device is horizontally fixedly mounted on the frame, the first mounting frame is mounted on the output end of the first linear pushing device, the precise detection assembly for detecting the verticality of the lead screw nut is mounted on the first mounting frame, the horizontal fine-tuning device is horizontally arranged at the top end of the first mounting frame and is transmission-connected to the precise detection assembly, and the visual detection mechanism is arranged on the side of the mounting assembly.

[0007] Preferably, a first rotating disk is rotatably installed on the mounting base, and several layers of limiting rings concentric with the first rotating disk are provided on the first rotating disk, and the diameter length of the several layers of limiting rings gradually decreases from top to bottom. A second rotating disk is rotatably installed on the mounting top plate, and a three-jaw chuck is fixedly installed on the second rotating disk.

[0008] Preferably, the clamping assembly includes a clamping frame, a threaded seat, a two-way transmission threaded rod and a half-clamping plate. The clamping frame can be horizontally rotatably installed on the second lifting frame. The center of the clamping frame is provided with a first avoidance channel for avoiding the ladder screw. The threaded seat and the half-clamping plate are each provided with two groups and are symmetrically arranged along the vertical center plane of the clamping frame. Each group of threaded seats is provided with two and are respectively fixedly installed at both ends of the half-clamping plate. The threaded seat is horizontally slidably connected to the clamping frame. There are two two-way transmission threaded rods, and the two two-way transmission threaded rods are respectively threadedly connected to the two threaded seats at the same end of the two half-clamping plates. The two-way transmission threaded rod is horizontally rotatably installed on the clamping frame, and the clamping drive assembly is transmission-connected to the two-way transmission threaded rod.

[0009] Preferably, the clamping portion of the half-clamping plate is V-shaped, and the heights of the clamping portions of the two half-clamping plates are staggered.

[0010] Preferably, the clamping drive assembly includes a first linear pusher, a first sliding plate, a contact plate, a second rotation drive and a transmission rod, the first linear pusher is horizontally fixedly mounted on the second lifting frame, the first sliding plate is slidably arranged on the second lifting frame, the output end of the first linear pusher is fixedly connected to the first sliding plate, the sliding direction of the first sliding plate points to the trapezoidal screw, the contact plate is fixedly mounted on the side of the first sliding plate close to the trapezoidal screw, the second rotation drive is fixedly mounted on the first sliding plate, the transmission rod is rotatably mounted on the first sliding plate, two transmission rods are provided, and the two transmission rods are rotatably mounted at both ends of the first sliding plate, the output end of the second rotation drive is fixedly connected to the end of one of the transmission rods, the two transmission rods rotate synchronously through a synchronous belt, the transmission rod is coaxially arranged with the bidirectional transmission threaded rod, and the end of the transmission rod can be transmission-connected to the bidirectional transmission threaded rod.

[0011] Preferably, a conical connector is provided at one end of the transmission rod close to the bidirectional transmission threaded rod, a clamping block is fixedly mounted on the conical connector, and a clamping groove which engages with the clamping block is provided at one end of the bidirectional transmission threaded rod close to the transmission rod.

[0012] Preferably, the elastic locking assembly includes a locking spring, a clamping plate, an unlocking groove, a friction block and an interference unlocking block. The locking spring and the clamping plate are each provided with two groups and are symmetrically arranged along the horizontal center plane of the clamping frame. The clamping plate is elastically connected to the clamping frame through the locking spring. The friction block is fixedly mounted on the clamping plate. The friction block is used to interfere with the end outer wall of the bidirectional transmission threaded rod to lock it. The interference unlocking block is fixedly mounted on the interference plate. The clamping plate is provided with an unlocking groove matching the interference unlocking block.

[0013] Preferably, the precise detection component includes a first interference probe, a second interference probe, a first pressure detection sensor, a second pressure detection sensor and a buffer spring, the first interference probe is horizontally arranged and one end of the first interference probe is connected to the first pressure detection sensor, the first pressure detection sensor is fixedly mounted on the first mounting frame, the second interference probe is vertically arranged and the second interference probe is mounted on the output end of the horizontal fine-tuning device through the buffer spring, the second pressure detection sensor is fixedly mounted on the output end of the horizontal fine-tuning device, and the end of the second interference probe is connected to the second pressure detection sensor.

[0014] Preferably, the visual inspection mechanism includes a second mounting frame, a third lifting frame and a detection camera, the second mounting frame is fixedly mounted on the frame, the third lifting frame is liftably arranged on the second mounting frame, the detection camera is horizontally fixedly mounted on the third lifting frame, and the detection end of the detection camera points to the ladder screw.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This equipment can adaptively perform positioning, clamping and detection operations of lead screws, and can adapt to the detection requirements of lead screws of different models and specifications. It has high detection accuracy and high detection efficiency. It can improve production detection efficiency during large-scale verticality detection and is convenient for large-scale promotion.

[0017] 2. When the height of the screw nut needs to be adjusted, the clamping assembly maintains the connection relationship between the clamping assembly, the clamping drive assembly and the elastic locking assembly during the process of clamping the screw nut, so that when the screw threaded rod rotates, it cannot drive the screw nut to rotate synchronously, and can only drive the screw nut to realize the movement process in the vertical direction through the threaded transmission, thereby realizing the height adjustment function of the screw nut; when the screw nut needs to rotate synchronously with the screw threaded rod, it is necessary to disconnect the connection relationship between the clamping assembly, the clamping drive assembly and the elastic locking assembly. At this time, the rotation of the screw nut can drive the clamping assembly to rotate synchronously, and there is no limiting effect on the screw nut, so the rotation function of the screw nut can be realized.

[0018] 3. The precise detection component is used to detect different positions of the lead screw nut. The first linear pushing device can drive the precise detection component to contact the surface of the lead screw nut. The horizontal fine-tuning device can precisely fine-tune the precise detection component. After the precise detection component detects multiple detection points at different angles of the lead screw nut and different positions from the lead screw thread rod, it can obtain accurate verticality data to achieve precise detection function.

[0019] 4. The function of the lead screw nut rotating synchronously with the lead screw threaded rod and the lead screw nut moving up and down relative to the lead screw threaded rod can match the detection process, so that the second interference probe can detect multiple different angular positions, and cooperate with the horizontal fine-tuning device to detect different horizontal positions of the same angle, thereby making the detection result more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a trapezoidal screw verticality detection device Figure 1 ;

[0021] Figure 2 A schematic diagram of the three-dimensional structure of a trapezoidal screw verticality detection device Figure 2 ;

[0022] Figure 3 It is a front view of a trapezoidal lead screw verticality detection device;

[0023] Figure 4 A schematic diagram of the partial three-dimensional structure of a trapezoidal lead screw verticality detection device Figure 1 ;

[0024] Figure 5 A schematic diagram of the partial three-dimensional structure of a trapezoidal lead screw verticality detection device Figure 2 ;

[0025] Figure 6 It is a three-dimensional structural schematic diagram of a clamping drive component and an elastic locking component in a trapezoidal lead screw verticality detection device;

[0026] Figure 7 It is a three-dimensional structural schematic diagram of a clamping assembly and a clamping drive assembly in a trapezoidal lead screw verticality detection device;

[0027] Figure 8 It is a three-dimensional structural schematic diagram of a mounting base and a first rotating disk in a trapezoidal lead screw verticality detection device;

[0028] Fig. 9 It is a three-dimensional structural schematic diagram of a refined detection mechanism in a trapezoidal lead screw verticality detection device;

[0029] Fig.10 yes Figure 7 Enlarged view of point A in the middle.

[0030] The numbers in the figure are:

[0031] 1. Frame; 11. Mounting assembly; 111. First fixed frame; 112. First lifting frame; 113. Mounting top plate; 114. Three-jaw chuck; 115. Mounting base; 116. First rotating disk; 117. Limiting ring; 118. Second rotating disk; 12. Rotation drive assembly; 2. Adaptive clamping mechanism; 21. Second lifting frame; 22. Clamping assembly; 221. Clamping frame; 222. First avoidance channel; 223. Threaded seat; 224. Two-way transmission threaded rod; 225. Half clamping plate; 23. Clamping drive assembly; 231. First linear pusher; 232. First sliding plate; 233. Contact plate; 234. Second rotary driver; 235. Transmission rod; 236. Conical connector; 23 7. Block; 238. Slot; 24. Elastic locking assembly; 241. Locking spring; 242. Clamping plate; 243. Unlocking slot; 244. Friction block; 245. Interference unlocking block; 25. Second linear pusher; 3. Refined detection mechanism; 31. First linear pusher; 32. First mounting bracket; 33. Precision detection assembly; 331. First interference probe; 332. Second interference probe; 333. First pressure detection sensor; 334. Second pressure detection sensor; 335. Buffer spring; 34. Horizontal fine-tuning device; 4. Visual detection mechanism; 41. Second mounting bracket; 42. Third lifting bracket; 43. Detection camera; 5. Lead screw; 51. Lead screw threaded rod; 52. Lead screw nut. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] like Figure 1-10 The device for detecting the verticality of a trapezoidal lead screw shown in the figure comprises a frame 1, an adaptive clamping mechanism 2, a refined detection mechanism 3 and a visual detection mechanism 4, and also comprises a detection object trapezoidal lead screw 5 clamped by the adaptive clamping mechanism 2, the trapezoidal lead screw 5 comprises a lead screw threaded rod 51 and a lead screw nut 52, the frame 1 comprises a mounting assembly 11 and a rotation drive assembly 12, the mounting assembly 11 comprises a first fixed frame 111, a first lifting frame 112, a mounting top plate 113, a three-jaw chuck 114 and a mounting base 115, the first fixed frame 111 is fixedly mounted on the frame The first lifting frame 112 is arranged on the frame 1 so as to be able to be lifted and lowered, and the mounting top plate 113 is fixedly mounted on the first lifting frame 112. The three-jaw chuck 114 is arranged on the mounting top plate 113. The mounting base 115 is fixedly mounted on the first fixing frame 111. The lead screw threaded rod 51 is arranged between the mounting top plate 113 and the mounting base 115 so as to be able to be vertically rotated. The rotation drive assembly 12 is fixedly mounted on the mounting top plate 113 and is in transmission connection with the lead screw threaded rod 51. The adaptive clamping mechanism 2 includes a second lifting frame 21 , a clamping assembly 22, a clamping drive assembly 23, an elastic locking assembly 24 and a second linear pusher 25, the second lifting frame 21 is located between the first lifting frame 112 and the mounting base 115, the second linear pusher 25 is mounted on the mounting base 115, the output end of the second linear pusher 25 is fixedly connected to the second lifting frame 21, the clamping assembly 22 and the clamping drive assembly 23 are both mounted on the second lifting frame 21, the clamping drive assembly 23 is in transmission connection with the clamping assembly 22, the elastic locking assembly 24 is mounted on the clamping assembly 22, and the fine inspection The measuring mechanism 3 includes a first linear pushing device 31, a first mounting frame 32, a precise detection component 33 and a horizontal fine-tuning device 34. The first linear pushing device 31 is horizontally fixedly mounted on the frame 1, the first mounting frame 32 is mounted on the output end of the first linear pushing device 31, the precise detection component 33 for detecting the verticality of the lead screw nut 52 is mounted on the first mounting frame 32, the horizontal fine-tuning device 34 is horizontally arranged at the top of the first mounting frame 32 and is transmission-connected to the precise detection component 33, and the visual inspection mechanism 4 is arranged next to the mounting component 11.

[0034] This device can adaptively perform positioning, clamping, and detection operations on the ladder screw 5, and can adapt to the detection requirements of ladder screws 5 of different models and specifications. It has high detection accuracy and high detection efficiency. It can improve production detection efficiency during large-scale verticality detection, and is convenient for large-scale promotion. The present invention can vertically install the lead screw threaded rod 51 on the equipment through the frame 1. At this time, the output of the rotating drive component 12 can drive the ladder screw 5 installed on the mounting component 11 to rotate as a whole. The adaptive clamping mechanism 2 can identify the height of the lead screw nut 52 in the ladder screw 5 according to the visual detection of the visual detection mechanism 4. After the second lifting frame 21 moves to the clamping height, the clamping drive component 23 drives the clamping component 22 to clamp the lead screw nut 52. According to different actual detection requirements, the lead screw nut 52 is adjusted to move in the vertical direction or rotate synchronously with the lead screw threaded rod 51. When the height of the lead screw nut 52 needs to be adjusted, the clamping component 22 clamps the lead screw nut 52. During the process, the connection relationship between the clamping assembly 22 and the clamping drive assembly 23 and the elastic locking assembly 24 is maintained, so that when the screw threaded rod 51 rotates, it cannot drive the screw nut 52 to rotate synchronously, and can only drive the screw nut 52 to realize the movement process in the vertical direction through the threaded transmission, thereby realizing the height adjustment function of the screw nut 52; when the screw nut 52 is required to rotate synchronously with the screw threaded rod 51, it is necessary to disconnect the connection relationship between the clamping assembly 22 and the clamping drive assembly 23 and the elastic locking assembly 24. At this time, the rotation of the screw nut 52 can drive the clamping assembly 22 to rotate synchronously, and there is no limiting effect on the screw nut 52, so the rotation function of the screw nut 52 can be realized. According to the above operation, the precise detection function of the verticality of the trapezoidal lead screw 5 can be realized in cooperation with the refined detection mechanism 3. The different positions of the lead screw nut 52 are detected by the precise detection component 33. The first linear pushing device 31 can drive the precise detection component 33 to contact the surface of the lead screw nut 52. The horizontal fine-tuning device 34 can precisely fine-tune the precise detection component 33. After the precise detection component 33 detects multiple detection points at different angles of the lead screw nut 52 and different positions from the lead screw threaded rod 51, the precise verticality data is obtained to realize the precise detection function.

[0035] A first rotating disk 116 (such as Figure 8 As shown, the first rotating disk 116 is provided with several layers of limiting rings 117 which are concentric with the first rotating disk 116, and the diameters of the several layers of limiting rings 117 gradually decrease from top to bottom. A second rotating disk 118 is rotatably installed on the mounting top plate 113, and the three-jaw chuck 114 is fixedly installed on the second rotating disk 118.

[0036] The bottom end of the lead screw threaded rod 51 is in contact with the matching limit ring 117 in the first rotating disk 116, and the top end of the lead screw threaded rod 51 can be clamped by the three-jaw chuck 114. This device can achieve a relatively precise clamping effect when clamping trapezoidal lead screws 5 of different diameters.

[0037] The clamping assembly 22 includes a clamping frame 221, a threaded seat 223, a two-way transmission threaded rod 224 and a half-clamping plate 225. The clamping frame 221 can be horizontally rotatably installed on the second lifting frame 21. The center of the clamping frame 221 is provided with a first avoidance channel 222 for avoiding the ladder screw 5. The threaded seat 223 and the half-clamping plate 225 are each provided with two groups and are symmetrically arranged along the vertical center plane of the clamping frame 221. Each group of threaded seats 223 is provided with two and are respectively fixedly installed at both ends of the half-clamping plate 225. The threaded seat 223 is horizontally slidably connected to the clamping frame 221. There are two two-way transmission threaded rods 224. The two two-way transmission threaded rods 224 are respectively threadedly connected to the two threaded seats 223 at the same end of the two half-clamping plates 225. The two-way transmission threaded rod 224 can be horizontally rotatably installed on the clamping frame 221, and the clamping drive assembly 23 is transmission-connected to the two-way transmission threaded rod 224.

[0038] When the clamping assembly 22 is working to clamp the screw nut 52, the bidirectional transmission threaded rod 224 is driven to rotate through the clamping drive assembly 23. When rotating, the bidirectional transmission threaded rod 224 drives the threaded seat 223 threadedly connected thereto to slide horizontally on the clamping frame 221, thereby driving the half-clamping plate 225 fixedly connected thereto to slide horizontally synchronously, and the two half-clamping plates 225 approach or move away from each other, thereby realizing the function of clamping or loosening the screw nut 52 located between the two half-clamping plates 225.

[0039] The clamping portion of the half clamping plate 225 is V-shaped, and the heights of the clamping portions of the two half clamping plates 225 are staggered.

[0040] The design of the half clamping plates 225 enables the two half clamping plates 225 to adaptively clamp lead screw nuts 52 of different sizes and types, thereby increasing the use range of the equipment and ensuring a better clamping effect when clamping different types of trapezoidal lead screws 5 .

[0041] The clamping drive assembly 23 includes a first linear pusher 231, a first sliding plate 232, a contact plate 233, a second rotation driver 234 and a transmission rod 235. The first linear pusher 231 is horizontally fixedly installed on the second lifting frame 21, the first sliding plate 232 is slidably arranged on the second lifting frame 21, the output end of the first linear pusher 231 is fixedly connected to the first sliding plate 232, the sliding direction of the first sliding plate 232 points to the trapezoidal screw 5, the contact plate 233 is fixedly installed on the side of the first sliding plate 232 close to the trapezoidal screw 5, the second rotation driver 234 is fixedly installed on the first sliding plate 232, and two transmission rods 235 are provided. The two transmission rods 235 are rotatably installed at both ends of the first sliding plate 232, the output end of the second rotation driver 234 is fixedly connected to the end of one of the transmission rods 235, and the two transmission rods 235 rotate synchronously through a synchronous belt. The transmission rod 235 is coaxially arranged with the bidirectional transmission threaded rod 224, and the end of the transmission rod 235 can be transmission-connected with the bidirectional transmission threaded rod 224.

[0042] When the clamping drive assembly 23 is working, the output of the first linear pusher 231 pushes the first sliding plate 232 to horizontally move toward the side close to the trapezoidal screw 5, so that the first sliding plate 232 and the upper load are synchronously displaced close to the clamping assembly 22. After running a certain distance, the end of the transmission rod 235 is transmission-connected to the end of the two-way transmission threaded rod 224, and the output of the second rotary driver 234 drives the transmission rod 235 fixedly connected thereto to rotate, and then drives the two-way transmission threaded rod 224 transmission-connected thereto to rotate through the transmission rod 235, thereby realizing the driving function of the clamping drive assembly 23 to the clamping assembly 22, and the abutment plate 233 is used to abut the edge of the clamping frame 221.

[0043] The transmission rod 235 is provided with a conical connector 236 at one end close to the bidirectional transmission threaded rod 224, and a clamping block 237 (such as Fig.10 As shown in FIG. 2 , one end of the bidirectional transmission threaded rod 224 close to the transmission rod 235 is provided with a clamping groove 238 which is engaged with the clamping block 237.

[0044] The conical connector 236 can facilitate the insertion of the end of the transmission rod 235 into the bidirectional transmission threaded rod 224 , and the clamping fit between the clamping block 237 and the clamping groove 238 realizes the transmission connection relationship between the transmission rod 235 and the bidirectional transmission threaded rod 224 .

[0045] The elastic locking assembly 24 includes a locking spring 241, a clamping plate 242, an unlocking groove 243, a friction block 244 and an interference unlocking block 245. The locking spring 241 and the clamping plate 242 are each provided with two groups and are symmetrically arranged along the horizontal center plane of the clamping frame 221. The clamping plate 242 is elastically connected to the clamping frame 221 through the locking spring 241. The friction block 244 is fixedly mounted on the clamping plate 242. The friction block 244 is used to interfere with the outer side wall of the end of the bidirectional transmission threaded rod 224 to lock it. The interference unlocking block 245 is fixedly mounted on the interference plate 233. The clamping plate 242 is provided with an unlocking groove 243 matching the interference unlocking block 245.

[0046] In the initial state, the two clamping plates 242 are in conflict with each other under the elastic force of the locking spring 241. At this time, the friction block 244 fixedly installed on the clamping plate 242 generates a large friction force on the two-way transmission threaded rod 224, thereby realizing the locking function of the two-way transmission threaded rod 224, so that it will not deflect when it is not connected to the clamping drive assembly 23 for transmission, thereby ensuring the clamping effect of the clamping assembly 22 on the lead screw nut 52 when the clamping drive assembly 23 is disconnected from the clamping assembly 22. When unlocking is required, the clamping drive assembly 23 drives the contact plate 233 to move toward the direction close to the clamping frame 221, and the contact plate 233 drives the contact unlocking block 245 fixedly connected to it to move synchronously. The contact unlocking block 245 is inserted into the unlocking groove 243, so that the two clamping plates 242 overcome the elastic force of the locking spring 241 and move away from each other, thereby releasing the locking function of the friction block 244 on the bidirectional transmission threaded rod 224, thereby facilitating the clamping drive assembly 23 to realize the driving function of the bidirectional transmission threaded rod 224.

[0047] The precise detection component 33 includes a first contact probe 331, a second contact probe 332, a first pressure detection sensor 333, a second pressure detection sensor 334 and a buffer spring 335. The first contact probe 331 is horizontally arranged and one end of the first contact probe 331 is connected to the first pressure detection sensor 333. The first pressure detection sensor 333 is fixedly installed on the first mounting frame 32. The second contact probe 332 is vertically arranged and the second contact probe 332 is installed on the output end of the horizontal fine-tuning device 34 through the buffer spring 335. The second pressure detection sensor 334 is fixedly installed on the output end of the horizontal fine-tuning device 34, and the end of the second contact probe 332 is connected to the second pressure detection sensor 334.

[0048] During detection, the first contact probe 331 and the second contact probe 332 are energized, and the end of the first contact probe 331 moves toward the direction close to the trapezoidal lead screw 5 under the output of the first linear pushing device 31 until the end of the first contact probe 331 contacts the outer wall of the lead screw nut 52. The lead screw nut 52 adjusts its height so that the top horizontal surface of the lead screw nut 52 contacts the detection end of the second contact probe 332, and squeezes the buffer spring 335 upward, so that the second pressure detection sensor 334 detects a certain pressure value, and judges the verticality of the lead screw nut 52 by the change of pressure values ​​at different positions, thereby realizing the precise detection function.

[0049] It is worth mentioning that the function of the screw nut 52 rotating synchronously with the screw threaded rod 51 and the up and down displacement of the screw nut 52 relative to the screw threaded rod 51 can match the detection process, so that the second interference probe 332 can detect multiple different angular positions, and cooperate with the horizontal fine-tuning device 34 to detect different horizontal positions of the same angle, thereby making the detection result more accurate.

[0050] The visual inspection mechanism 4 includes a second mounting frame 41, a third lifting frame 42 and a detection camera 43. The second mounting frame 41 is fixedly mounted on the frame 1, and the third lifting frame 42 is arranged on the second mounting frame 41 (such as Figure 4 As shown), the detection camera 43 is horizontally fixedly installed on the third lifting frame 42, and the detection end of the detection camera 43 points to the ladder screw 5.

[0051] The third lifting frame 42 can drive the detection camera 43 to move up and down as needed. The detection camera 43 is used to detect the position and height of the lead screw threaded rod 51 and the lead screw nut 52. At the same time, the detection camera 43 can also assist in the visual detection function of verticality.

[0052] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A trapezoidal lead screw verticality detection device, characterized in that: The invention comprises a frame (1), an adaptive clamping mechanism (2), a refined detection mechanism (3) and a visual detection mechanism (4), and also comprises a detection object ladder screw (5) clamped by the adaptive clamping mechanism (2), the ladder screw (5) comprising a lead screw threaded rod (51) and a lead screw nut (52), the frame (1) comprising a mounting assembly (11) and a rotation drive assembly (12), the mounting assembly (11) comprising a first fixed frame (111), a first lifting frame (112), a mounting top plate (113), a three-jaw chuck (114) and a mounting base (115), the first fixed frame (111) being fixedly mounted on the frame (1), the first lifting frame (112) being The self-adaptive clamping mechanism (2) comprises a first lifting frame (112) and a second lifting frame (112) which can be lifted and lowered, a mounting top plate (113) which is fixedly mounted on the first lifting frame (112), a three-jaw chuck (114) which is mounted on the mounting top plate (113), a mounting base (115) which is fixedly mounted on the first fixing frame (111), a lead screw threaded rod (51) which can be vertically rotated and is arranged between the mounting top plate (113) and the mounting base (115), a rotation drive assembly (12) which is fixedly mounted on the mounting top plate (113) and is transmission-connected to the lead screw threaded rod (51), and a second lifting frame (21), a clamping assembly (214) which can be lifted and lowered, and a second lifting frame (112) which can be lifted and lowered, and a clamping assembly (215) which can be vertically rotated and is transmission-connected to the lead screw threaded rod (51). 2), a clamping drive assembly (23), an elastic locking assembly (24) and a second linear pusher (25), the second lifting frame (21) is located between the first lifting frame (112) and the mounting base (115), the second linear pusher (25) is mounted on the mounting base (115), the output end of the second linear pusher (25) is fixedly connected to the second lifting frame (21), the clamping assembly (22) and the clamping drive assembly (23) are both mounted on the second lifting frame (21), the clamping drive assembly (23) is transmission-connected to the clamping assembly (22), the elastic locking assembly (24) is mounted on the clamping assembly (22), and the refined detection mechanism (3) comprises a first linear pushing device (31), a first mounting frame (32), a precision detection component (33) and a horizontal fine-tuning device (34), wherein the first linear pushing device (31) is horizontally fixedly mounted on the frame (1), the first mounting frame (32) is mounted on the output end of the first linear pushing device (31), the precision detection component (33) for detecting the verticality of the lead screw nut (52) is mounted on the first mounting frame (32), the horizontal fine-tuning device (34) is horizontally arranged at the top end of the first mounting frame (32) and is transmission-connected to the precision detection component (33), and the visual detection mechanism (4) is arranged beside the mounting component (11).

2. A trapezoidal lead screw verticality detection device according to claim 1, characterized in that: A first rotating disk (116) is rotatably mounted on the mounting base (115), a plurality of layers of limiting rings (117) concentric with the first rotating disk (116) are provided on the first rotating disk (116), and the diameters of the plurality of layers of limiting rings (117) gradually decrease from top to bottom. A second rotating disk (118) is rotatably mounted on the mounting top plate (113), and a three-jaw chuck (114) is fixedly mounted on the second rotating disk (118).

3. A trapezoidal lead screw verticality detection device according to claim 2, characterized in that: The clamping assembly (22) comprises a clamping frame (221), a threaded seat (223), a bidirectional transmission threaded rod (224) and a semi-clamping plate (225). The clamping frame (221) is mounted on the second lifting frame (21) so as to be horizontally rotatable. A first avoidance channel (222) for avoiding the ladder screw (5) is provided at the center of the clamping frame (221). The threaded seat (223) and the semi-clamping plate (225) are provided in two groups and are symmetrically arranged along the vertical center plane of the clamping frame (221). Each group of threaded seats (223) is Two threaded seats (223) are respectively fixedly mounted at the two ends of the half clamping plates (225), the threaded seats (223) are horizontally slidably connected to the clamping frame (221), two bidirectional transmission threaded rods (224) are respectively threadedly connected to the two threaded seats (223) at the same end of the two half clamping plates (225), the bidirectional transmission threaded rods (224) are horizontally rotatably mounted on the clamping frame (221), and the clamping drive assembly (23) is transmission-connected to the bidirectional transmission threaded rods (224).

4. A trapezoidal lead screw verticality detection device according to claim 3, characterized in that: The clamping portion of the half clamping plate (225) is V-shaped, and the heights of the clamping portions of the two half clamping plates (225) are staggered.

5. A trapezoidal lead screw verticality detection device according to claim 4, characterized in that: The clamping drive assembly (23) comprises a first linear pusher (231), a first sliding plate (232), a contact plate (233), a second rotary driver (234) and a transmission rod (235); the first linear pusher (231) is horizontally fixedly mounted on the second lifting frame (21); the first sliding plate (232) is slidably arranged on the second lifting frame (21); the output end of the first linear pusher (231) is fixedly connected to the first sliding plate (232); the sliding direction of the first sliding plate (232) points to the ladder screw (5); the contact plate (233) is fixedly mounted on a side of the first sliding plate (232) close to the ladder screw (5); The second rotary driver (234) is fixedly mounted on the first sliding plate (232), and the transmission rod (235) is rotatably mounted on the first sliding plate (232). Two transmission rods (235) are provided, and the two transmission rods (235) are rotatably mounted on the two ends of the first sliding plate (232). The output end of the second rotary driver (234) is fixedly connected to the end of one of the transmission rods (235). The two transmission rods (235) rotate synchronously through a synchronous belt. The transmission rod (235) is coaxially arranged with the bidirectional transmission threaded rod (224), and the end of the transmission rod (235) can be transmission-connected to the bidirectional transmission threaded rod (224).

6. A trapezoidal lead screw verticality detection device according to claim 5, characterized in that: A conical connector (236) is provided at one end of the transmission rod (235) close to the bidirectional transmission threaded rod (224), a clamping block (237) is fixedly mounted on the conical connector (236), and a clamping groove (238) that is clamped and matched with the clamping block (237) is provided at one end of the bidirectional transmission threaded rod (224) close to the transmission rod (235).

7. A trapezoidal lead screw verticality detection device according to claim 6, characterized in that: The elastic locking assembly (24) comprises a locking spring (241), a clamping plate (242), an unlocking groove (243), a friction block (244) and an abutting unlocking block (245). The locking spring (241) and the clamping plate (242) are both provided with two groups and are symmetrically arranged along the horizontal center plane of the clamping frame (221). The clamping plate (242) is elastically connected to the clamping frame (221) through the locking spring (241). The friction block (244) is fixedly mounted on the clamping plate (242). The friction block (244) is used to abut against the outer side wall of the end of the bidirectional transmission threaded rod (224) to lock it. The abutting unlocking block (245) is fixedly mounted on the abutting plate (233). The clamping plate (242) is provided with an unlocking groove (243) matching the abutting unlocking block (245).

8. A trapezoidal lead screw verticality detection device according to claim 7, characterized in that: The precise detection component (33) comprises a first abutment probe (331), a second abutment probe (332), a first pressure detection sensor (333), a second pressure detection sensor (334) and a buffer spring (335); the first abutment probe (331) is arranged horizontally and one end of the first abutment probe (331) is connected to the first pressure detection sensor (333); the first pressure detection sensor (333) is fixedly mounted on the first mounting frame (32); the second abutment probe (332) is arranged vertically and the second abutment probe (332) is mounted on the output end of the horizontal fine-tuning device (34) via the buffer spring (335); the second pressure detection sensor (334) is fixedly mounted on the output end of the horizontal fine-tuning device (34); and the end of the second abutment probe (332) is connected to the second pressure detection sensor (334).

9. A trapezoidal lead screw verticality detection device according to claim 8, characterized in that: The visual inspection mechanism (4) comprises a second mounting frame (41), a third lifting frame (42) and a detection camera (43); the second mounting frame (41) is fixedly mounted on the frame (1); the third lifting frame (42) is movably arranged on the second mounting frame (41); the detection camera (43) is horizontally fixedly mounted on the third lifting frame (42); and the detection end of the detection camera (43) points to the ladder screw (5).

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