A stress detection device and method for punching processing of a steel product

Abstract

This invention discloses a stress detection device and method for drilling steel products, belonging to the field of stress detection technology. It includes a stress mechanism for detecting the stress generated during drilling of steel products. The stress mechanism is equipped with a drilling mechanism and an actuation mechanism for drilling the steel products. The stress mechanism of this invention, by setting up upper and lower stress detection plates, can simultaneously monitor the stress changes on the upper and lower surfaces of the steel product during drilling, achieving real-time dynamic detection. Compared with traditional offline detection methods, it can promptly detect stress anomalies during processing. Through the linkage control of the trajectory wheel, half-tooth gear, and contact column, an automated process of rapid drill bit descent, slow drilling, and rapid retraction is achieved. During the processing section, the stress detection mechanism maintains stable contact, ensuring that drilling and stress detection are performed synchronously, resulting in more reliable data. The entire processing process has a high degree of automation, improving processing consistency and detection reliability.

Description

Technical Field

[0001] This invention relates to the field of stress testing technology, and in particular to a stress testing device and method for drilling steel products. Background Technology

[0002] Drilling is a common processing method in steel product manufacturing. However, the mechanical stress generated during drilling can affect the structural properties of steel products, potentially leading to microcracks, deformation, or residual stress concentration, thus impacting the service life and safety of the workpiece. Therefore, real-time stress detection of steel products during drilling is crucial. Currently, traditional stress detection methods typically employ static measurement or offline testing, i.e., stress analysis is performed on the workpiece after processing. This method cannot reflect dynamic stress changes during processing in real time, making it difficult to adjust processing parameters promptly to avoid workpiece damage. Furthermore, existing stress detection devices are often complex in structure and cumbersome in operation, making efficient integration with drilling equipment difficult, resulting in low detection efficiency and failing to meet the needs of modern production. In existing technologies, some stress detection devices use a single sensor to detect the workpiece surface, but cannot simultaneously monitor the stress distribution on the upper and lower surfaces of the workpiece, leading to incomplete data. Additionally, traditional clamping mechanisms may apply additional stress to the workpiece during drilling, interfering with the accuracy of the detection results. Therefore, there is an urgent need for a device capable of real-time, efficient, and accurate detection of stress changes during the drilling process of steel products to optimize the processing technology and ensure workpiece quality. To address the aforementioned issues, this technology proposes a stress detection device for drilling steel products. By driving multiple sets of clamping and detection mechanisms with bidirectional threaded columns, it achieves synchronous stress detection on the upper and lower surfaces of the workpiece. Combined with an automated drilling mechanism, it ensures the efficiency and accuracy of the detection process. Summary of the Invention

[0003] To address the aforementioned technical problems, the present invention adopts the following technical solution: a stress detection device for drilling steel products, comprising a stress mechanism for detecting the stress generated during drilling of steel products, the stress mechanism comprising a base frame, and a drilling mechanism and an actuation mechanism for drilling steel products are provided on the stress mechanism.

[0004] The stress mechanism includes a bidirectional threaded column rotatably mounted in the base frame, a side bevel gear fixedly mounted on the bidirectional threaded column, and four bidirectional external threads on the bidirectional threaded column, the threads being trapezoidal threads;

[0005] The drilling mechanism includes an upper frame fixedly installed on a base frame, a lifting cylinder slidably installed on the upper frame, and a lifting frame fixedly installed on the lifting cylinder.

[0006] Furthermore, the stress mechanism also includes two outer sliders that are slidably installed in the base frame. The outer sliders and the two bidirectional external threads on the outer side of the bidirectional threaded column form a threaded transmission. An outer rotating rod is rotatably installed on the outer slider.

[0007] Furthermore, the base frame is equipped with four upper clamping modules. Each upper clamping module includes an outer sliding triangular block slidably installed inside the base frame. The outer sliding triangular block has a slope and is rotatably installed with an outer rotating rod. A side lifting frame is slidably installed inside the base frame. The side lifting frame and the slope of the outer sliding triangular block form a sliding fit. An upper column is fixedly installed on the side lifting frame. A lifting spring is provided between the side lifting frame and the base frame. An upper pressure rod is rotatably installed on the base frame. The upper pressure rod has a sliding groove. The upper column slides in the sliding groove. An upper stress detection plate is fixedly installed on the upper pressure rod.

[0008] Furthermore, two inner sliders are slidably installed inside the base frame. The inner sliders and the two bidirectional external threads on the inner side of the bidirectional threaded column form a threaded transmission. Two inner rotating rods are rotatably installed on the inner sliders. The inner rotating rods are provided with inner sliding grooves. A fixed column is fixedly installed inside the base frame. The fixed column slides in the inner sliding groove. A lower slider is rotatably installed on the inner rotating rod. A lifting plate is slidably installed on the lower slider. A lower spring is fixedly installed on the lifting plate. A lower stress detection plate is fixedly installed on the other end of the lower spring.

[0009] During use, the steel product to be tested is placed on the base frame. In the initial state, the contact column is located at the intersection of the holding section and the rapid rising section. The half-tooth gear meshes with the mating gear, which drives the mating gear to rotate. The mating gear drives the lower bevel gear to rotate, which in turn drives the side bevel gear to rotate. The side bevel gear rotates, which in turn drives the bidirectional threaded column to rotate. The bidirectional threaded column rotates, causing the outer slider to slide inward along the base frame. This, in turn, drives the outer sliding triangle block to slide outward via the outer rotating rod. The outer sliding triangle block, through the inclined plane, drives the side lifting frame to rise. The lifting spring is compressed, and the rise of the side lifting frame, through the sliding of the upper column in the slide groove, drives the upper pressure rod to rotate, causing the four upper stress detection plates to adhere to the upper surface of the steel product. The upper pressure rod clamps the upper surface of the steel product. Simultaneously, the rotation of the bidirectional threaded column drives the inner slider to slide inward, driving the inner rotating rod to rotate. This, combined with the sliding of the fixed column in the inner slide groove, drives the lower slider to rise. This, combined with the sliding of the lower slider at the bottom of the lifting plate, drives the lifting... As the plate and lower stress detection plate rise, the lower stress detection plate adheres to the lower surface of the steel product, and the lower spring has a certain amount of compression. When the upper and lower stress detection plates adhere to the upper and lower surfaces of the steel product, the half-tooth gear disengages from the mating gear, and the side bevel gear and the double-threaded column stop rotating. During the drilling process on the steel product, the upper and lower stress detection plates detect the stress generated during the processing. Since the four sections of thread on the double-threaded column are all double-external threads, when the half-tooth gear re-engages with the mating gear, the side bevel gear and the double-threaded column continue to rotate. At this time, the outer slider and inner slider begin to slide outward, the outer sliding triangle slides inward, the lifting spring rebounds, and the side lifting frame descends, causing the upper pressure rod to rotate and reset. The inner slider drives the lower slider to descend through the inner rotating rod, and the lower stress detection plate and lifting plate descend and reset. At this time, the main motor stops, and the contact column is located at the intersection of the holding section and the rapid rising section, returning to the initial state.

[0010] Furthermore, the punching mechanism also includes a punching motor fixedly mounted on the upper frame, a vertical shaft rotatably mounted on the upper frame, the punching motor driving the vertical shaft to rotate via an output belt, an inner rotating column rotatably mounted on the upper frame, an upper gear fixedly mounted on the inner rotating column, and the vertical shaft driving the upper gear to rotate via an upper transmission belt.

[0011] Furthermore, a central rotating cylinder is rotatably installed inside the lifting cylinder via a rolling bearing. The central rotating cylinder is slidably installed with the inner rotating column, and a drill bit is fixedly installed below the central rotating cylinder.

[0012] The drilling motor drives the vertical shaft to rotate via the output belt. The vertical shaft drives the upper gear and the inner rotating column to rotate via the upper transmission belt. The inner rotating column drives the central rotating cylinder and the drill bit to rotate.

[0013] Furthermore, the actuation mechanism includes a main motor fixedly installed below the upper frame, a column rotatably installed on the base frame, a track wheel and a half-tooth gear fixedly installed on the column, a mating gear rotatably installed on the base frame, a lower bevel gear fixedly installed below the mating gear, the lower bevel gear meshing with the side bevel gear, the half-tooth gear meshing with the mating gear, and the main motor driving the column to rotate via belt drive.

[0014] Furthermore, a slide rod is slidably mounted on the upper frame, and a contact post is fixedly mounted on the slide rod. The contact post cooperates with the track wheel. An active rack rod is fixedly mounted on the slide rod. A front spring is provided between the active rack rod and the upper frame. A front rotating rod is rotatably mounted on the front spring. The front rotating rod is rotatably mounted with the lifting frame. A passive rack rod is slidably mounted on the upper frame. The active rack rod drives the passive rack rod to slide along the upper frame through gear transmission. A rear spring is provided between the passive rack rod and the upper frame. A rear rotating rod is rotatably mounted on the passive rack rod. The rear rotating rod is rotatably mounted with the lifting frame.

[0015] Furthermore, the outer contour of the track wheel is composed of a holding section, a rapid descent section, a processing section, and a rapid ascent section.

[0016] The main motor drives the column to rotate counterclockwise via a transmission belt. The column drives the half-tooth gear to rotate. The track wheel drives the slide rod to slide along the upper frame via the contact column. The slide rod drives the active rack rod to slide along the upper frame. The active rack rod drives the lifting frame and lifting cylinder to rise and fall via the front rotating rod. At the same time, the active rack rod drives the passive rack rod to slide along the upper frame via gear transmission. Simultaneously, it drives the lifting frame and lifting cylinder to rise and fall via the rear rotating rod.

[0017] When the contact post is located in the rapid ascent, holding, and rapid descent sections, the lower bevel gear meshes with the half-tooth gear. When the contact post is located in the machining section, the half-tooth gear disengages from the lower bevel gear. Initially, the contact post is located at the intersection of the holding and rapid ascent sections, and the track wheel rotates counterclockwise. The contact post enters the holding section, at which point the lower bevel gear rotates, causing the upper pressure rod to rotate inward and the lower stress detection plate to rise. Subsequently, the contact post enters the rapid descent section, which pushes the slide rod, compressing the front and rear springs. The lifting frame and lifting cylinder descend rapidly, causing the drill bit tip to contact the upper surface of the steel product. At this time, the lower bevel gear continues to rotate, causing the upper stress detection plate to adhere to the upper surface of the steel product, and the lower stress detection plate... The measuring plate is in contact with the lower surface of the steel product. When the contact column enters the processing section, the half-tooth gear and the lower bevel gear disengage. The upper and lower stress measuring plates remain in contact with the upper and lower surfaces of the steel product. The processing section slowly pushes the slide rod and the contact column, and the front and rear springs are further compressed. The upper stress measuring plate rotates at high speed while slowly descending to drill. When the contact column enters the rapid ascent section, the drilling is completed. The front and rear springs rebound, causing the lifting frame and lifting cylinder to rise rapidly to reset. At this time, the half-tooth gear and the lower bevel gear begin to mesh, causing the upper pressure rod to rotate outward to reset. The lower stress measuring plate descends to reset. Then the contact column returns to the intersection of the holding section and the rapid ascent section, and the processing is completed.

[0018] Furthermore, a method for detecting stress using a stress detection device for drilling steel products includes the following steps: 1. Placing the steel product on a base frame; 2. Rapidly lowering the drill bit until it contacts the upper surface of the steel product; 3. Simultaneously, the upper stress detection plate adheres to the upper surface of the steel product, and the lower stress detection plate adheres to the lower surface of the steel product; 4. Drilling a hole in the steel product using the drill bit, while the upper and lower stress detection plates detect stress in the steel product; 5. Rapidly raising the drill bit, and resetting the upper and lower stress detection plates; 6. Removing the steel product after drilling and testing.

[0019] The beneficial effects of this invention compared with the prior art are: (1) The stress mechanism set in this invention, by setting an upper stress detection plate and a lower stress detection plate, can simultaneously monitor the stress changes on the upper and lower surfaces of steel products during the drilling process, and realize real-time dynamic detection. Compared with the traditional offline detection method, it can promptly detect stress abnormalities in the processing process, adjust process parameters, avoid workpiece damage, and improve processing accuracy and product quality; (2) The stress mechanism set in this invention, through the cooperation of bidirectional threaded column, outer slider, inner slider and linkage mechanism, realizes automatic clamping of workpiece and precise fitting of stress detection plate. The entire clamping and detection process does not require manual intervention, reduces operation time, improves production efficiency, and is suitable for batch processing and detection of workpieces. Requirements; (3) The stress mechanism set in this invention adopts a trapezoidal thread and spring buffer design to ensure uniform distribution of clamping force and avoid the problem of local stress concentration caused by traditional rigid clamping. At the same time, the synergistic effect of the upper pressure rod and the lower stress detection plate makes the workpiece stable during the drilling process, reducing vibration and deformation, and ensuring the accuracy of the detection data; (4) This invention realizes the automated process of rapid descent, slow drilling and rapid retraction of the drill bit through the linkage control of the track wheel, half gear and contact column. During the processing section, the stress detection mechanism maintains stable contact to ensure that drilling and stress detection are carried out simultaneously, making the data more reliable. The entire processing process is highly automated, reducing human error and improving processing consistency and detection reliability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the stress mechanism structure of the present invention. Figure 1 .

[0022] Figure 3 This is a schematic diagram of the stress mechanism structure of the present invention. Figure 2 .

[0023] Figure 4 This is a schematic diagram of the stress mechanism structure of the present invention. Figure 3 .

[0024] Figure 5 This is a schematic diagram of the stress mechanism structure of the present invention. Figure 4 .

[0025] Figure 6 This is a schematic diagram of the drilling mechanism of the present invention. Figure 1 .

[0026] Figure 7 This is a schematic diagram of the drilling mechanism of the present invention. Figure 2 .

[0027] Figure 8 This is a schematic diagram of the drilling mechanism of the present invention. Figure 3 .

[0028] Figure 9 This is a schematic diagram of the action mechanism structure of the present invention. Figure 1 .

[0029] Figure 10 This is a schematic diagram of the action mechanism structure of the present invention. Figure 2 .

[0030] Figure 11 This is a schematic diagram of the track wheel structure of the present invention.

[0031] Reference numerals: 101-Base frame; 102-Double threaded column; 103-Side bevel gear; 104-Outer slider; 105-Outer rotating rod; 106-Outer sliding triangular block; 107-Side lifting frame; 108-Lifting spring; 109-Upper pressure rod; 110-Slide groove; 111-Upper column; 112-Upper stress detection plate; 113-Inner slider; 114-Inner rotating rod; 115-Inner slide groove; 116-Lifting plate; 117-Lower stress detection plate; 118-Lower spring; 119-Fixed column; 120-Lower slider; 201-Upper frame; 202-Drilling motor; 203-Vertical shaft; 204-Output belt; 205 206-Upper drive belt; 207-Upper gear; 208-Inner rotating column; 209-Central rotating cylinder; 210-Drill bit; 211-Lifting cylinder; 301-Lifting frame; 302-Main motor; 303-Column; 303-Trajectory wheel; 3031-Holding section; 3032-Rapid descent section; 3033-Processing section; 3034-Rapid ascent section; 304-Half gear; 305-Slide rod; 306-Contact column; 307-Active rack and pinion; 308-Front rotating rod; 309-Front spring; 310-Passive rack and pinion; 311-Rear rotating rod; 312-Rear spring; 313-Matching gear; 314-Lower bevel gear. Detailed Implementation

[0032] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0034] Example: Figures 1-11 As shown, a stress detection device for drilling steel products includes a stress mechanism for detecting the stress generated during drilling of steel products. The stress mechanism includes a base frame 101, and a drilling mechanism and an actuation mechanism for drilling steel products are provided on the stress mechanism.

[0035] The stress mechanism includes a bidirectional threaded column 102 rotatably mounted in the base frame 101, a side bevel gear 103 fixedly mounted on the bidirectional threaded column 102, and four bidirectional external threads on the bidirectional threaded column 102, the threads being trapezoidal threads.

[0036] The drilling mechanism includes an upper frame 201 fixedly installed on a base frame 101, a lifting cylinder 210 slidably installed on the upper frame 201, and a lifting frame 211 fixedly installed on the lifting cylinder 210.

[0037] like Figures 2-5 As shown, the stress mechanism also includes two outer sliders 104 that are slidably installed in the base frame 101. The outer sliders 104 and the two bidirectional external threads on the outer side of the bidirectional threaded column 102 form a threaded transmission. An outer rotating rod 105 is rotatably installed on the outer sliders 104.

[0038] like Figures 2-5 As shown, four upper clamping modules are provided on the base frame 101. Each upper clamping module includes an outer sliding triangular block 106 that is slidably installed inside the base frame 101. The outer sliding triangular block 106 has a slope. The outer sliding triangular block 106 is rotatably installed with the outer rotating rod 105. A side lifting frame 107 is slidably installed inside the base frame 101. The side lifting frame 107 and the slope of the outer sliding triangular block 106 form a sliding fit. An upper column 111 is fixedly installed on the side lifting frame 107. A lifting spring 108 is provided between the side lifting frame 107 and the base frame 101. An upper pressure rod 109 is rotatably installed on the base frame 101. A sliding groove 110 is provided on the upper pressure rod 109. The upper column 111 slides in the sliding groove 110. An upper stress detection piece 112 is fixedly installed on the upper pressure rod 109.

[0039] like Figures 2-5 As shown, two inner sliders 113 are slidably installed inside the base frame 101. The inner sliders 113 and the two bidirectional external threads on the inner side of the bidirectional threaded column 102 form a threaded transmission. Two inner rotating rods 114 are rotatably installed on the inner sliders 113. The inner rotating rods 114 are provided with inner sliding grooves 115. A fixed column 119 is fixedly installed inside the base frame 101. The fixed column 119 slides in the inner sliding grooves 115. A lower slider 120 is rotatably installed on the inner rotating rods 114. A lifting plate 116 is slidably installed on the lower slider 120. A lower spring 118 is fixedly installed on the lifting plate 116. A lower stress detection plate 117 is fixedly installed on the other end of the lower spring 118.

[0040] During use, the steel product to be tested is placed on the base frame 101. In the initial state, the contact post 306 is located at the intersection of the holding section 3031 and the rapid rising section 3034. The half-tooth gear 304 meshes with the mating gear 313. The half-tooth gear 304 drives the mating gear 313 to rotate. The mating gear 313 drives the lower bevel gear 314 to rotate. The lower bevel gear 314 drives the side bevel gear 103 to rotate. The rotation of the side bevel gear 103 drives the bidirectional threaded post 102 to rotate. The rotation of the bidirectional threaded post 102 drives the outer slider 104 to slide inward along the base frame 101. Through the outer rotating rod 105, the outer sliding triangular block 106 moves outward. The sliding outer sliding triangle block 106 drives the side lifting frame 107 to rise via the inclined plane, compressing the lifting spring 108. The rise of the side lifting frame 107 drives the upper pressure rod 109 to rotate via the sliding of the upper column 111 in the slide groove 110, so that the four upper stress detection plates 112 are attached to the upper surface of the steel product. The upper pressure rod 109 clamps the upper surface of the steel product. At the same time, the rotation of the bidirectional threaded column 102 drives the inner slider 113 to slide inward, driving the inner rotating rod 114 to rotate. In conjunction with the sliding of the fixed column 119 in the inner slide groove 115, the lower slider 120 is driven to rise. In conjunction with the sliding of the lower slider 120 at the bottom of the lifting plate 116, the lower slider 120 is driven to rise. The movement causes the lifting plate 116 and the lower stress detection plate 117 to rise, so that the lower stress detection plate 117 fits against the lower surface of the steel product. The lower spring 118 has a certain amount of compression. When the upper stress detection plate 112 and the lower stress detection plate 117 are in contact with the upper and lower surfaces of the steel product, the half-tooth gear 304 disengages from the mating gear 313, and the side bevel gear 103 and the bidirectional threaded column 102 stop rotating. When drilling the steel product, the upper stress detection plate 112 and the lower stress detection plate 117 detect the stress generated in the steel product during processing. Since the four threads on the bidirectional threaded column 102 are all bidirectional external threads... When the half-tooth gear 304 meshes with the mating gear 313 again, the side bevel gear 103 and the bidirectional threaded column 102 continue to rotate. At this time, the outer slider 104 and the inner slider 113 begin to slide outward, the outer sliding triangle block 106 slides inward, the lifting spring 108 rebounds, the side lifting frame 107 descends, causing the upper pressure rod 109 to rotate and reset. The inner slider 113 drives the lower slider 120 to descend through the inner rotating rod 114, and the lower stress detection plate 117 and the lifting plate 116 descend and reset. At this time, the main motor 301 stops, and the contact column 306 is located at the intersection of the holding section 3031 and the rapid rising section 3034, returning to the initial state.

[0041] like Figures 6-8 As shown, the punching mechanism also includes a punching motor 202 fixedly mounted on the upper frame 201. A vertical shaft 203 is rotatably mounted on the upper frame 201. The punching motor 202 drives the vertical shaft 203 to rotate through the output belt 204. An inner rotating column 207 is rotatably mounted on the upper frame 201. An upper gear 206 is fixedly mounted on the inner rotating column 207. The vertical shaft 203 drives the upper gear 206 to rotate through the upper transmission belt 205.

[0042] like Figures 6-8 As shown, a central rotating cylinder 208 is rotatably installed inside the lifting cylinder 210 via a rolling bearing. The central rotating cylinder 208 is slidably installed with the inner rotating column 207, and a drill bit 209 is fixedly installed below the central rotating cylinder 208.

[0043] The drilling motor 202 drives the vertical shaft 203 to rotate via the output belt 204. The vertical shaft 203 drives the upper gear 206 and the inner rotating column 207 to rotate via the upper transmission belt 205. The inner rotating column 207 drives the central rotating cylinder 208 and the drill bit 209 to rotate.

[0044] like Figures 9-11 As shown, the actuation mechanism includes a main motor 301 fixedly installed below the upper frame 201, a column 302 rotatably installed on the base frame 101, a track wheel 303 and a half-tooth gear 304 fixedly installed on the column 302, a mating gear 313 rotatably installed on the base frame 101, a lower bevel gear 314 fixedly installed below the mating gear 313, the lower bevel gear 314 meshes with the side bevel gear 103, the half-tooth gear 304 meshes with the mating gear 313, and the main motor 301 drives the column 302 to rotate via belt drive.

[0045] like Figures 9-11 As shown, a slide rod 305 is slidably mounted on the upper frame 201, and a contact post 306 is fixedly mounted on the slide rod 305. The contact post 306 cooperates with the track wheel 303. An active rack rod 307 is fixedly mounted on the slide rod 305. A front spring 309 is provided between the active rack rod 307 and the upper frame 201. A front rotating rod 308 is rotatably mounted on the front spring 309. The front rotating rod 308 is rotatably mounted with the lifting frame 211. A passive rack rod 310 is slidably mounted on the upper frame 201. The active rack rod 307 drives the passive rack rod 310 to slide along the upper frame 201 through gear transmission. A rear spring 312 is provided between the passive rack rod 310 and the upper frame 201. A rear rotating rod 311 is rotatably mounted on the passive rack rod 310. The rear rotating rod 311 is rotatably mounted with the lifting frame 211.

[0046] like Figure 11 As shown, the outer contour of the track wheel 303 consists of a holding section 3031, a rapid descent section 3032, a processing section 3033, and a rapid ascent section 3034.

[0047] The main motor 301 drives the column 302 to rotate counterclockwise via the transmission belt. The column 302 drives the half-tooth gear 304 to rotate. The track wheel 303 drives the slide rod 305 to slide along the upper frame 201 via the contact column 306. The slide rod 305 drives the active rack rod 307 to slide along the upper frame 201. The active rack rod 307 drives the lifting frame 211 and the lifting cylinder 210 to rise and fall via the front rotating rod 308. At the same time, the active rack rod 307 drives the passive rack rod 310 to slide along the upper frame 201 via gear transmission. Simultaneously, it drives the lifting frame 211 and the lifting cylinder 210 to rise and fall via the rear rotating rod 311.

[0048] When the contact post 306 is located in the rapid ascent section 3034, the holding section 3031, and the rapid descent section 3032, the lower bevel gear 314 meshes with the half-tooth gear 304. When the contact post 306 is located in the machining section 3033, the half-tooth gear 304 disengages from the lower bevel gear 314. Initially, the contact post 306 is located at the intersection of the holding section 3031 and the rapid ascent section 3034, and the track wheel 303 rotates counterclockwise, causing the contact post 306 to enter the holding section 3031. As the bevel gear 314 rotates, the upper pressure rod 109 rotates inward and the lower stress detection plate 117 rises. Then, the contact post 306 enters the rapid descent section 3032. At this time, the rapid descent section 3032 pushes the slide rod 305, compressing the front spring 309 and the rear spring 312. The lifting frame 211 and the lifting cylinder 210 descend rapidly, causing the end of the drill bit 209 to contact the upper surface of the steel product. Meanwhile, the lower bevel gear 314 continues to rotate, causing the upper stress detection plate 112 to contact the upper surface of the steel product. The upper stress detection plate 117 is in contact with the lower surface of the steel product. When the contact post 306 enters the processing section 3033, the half gear 304 disengages from the lower bevel gear 314. The upper stress detection plate 112 and the lower stress detection plate 117 remain in contact with the upper and lower surfaces of the steel product. The processing section 3033 slowly pushes the slide rod 305 and the contact post 306, further compressing the front spring 309 and the rear spring 312. The upper stress detection plate 112 rotates at high speed while descending slowly. Drilling is performed. When the contact post 306 enters the rapid rising section 3034, the drilling is completed. The front spring 309 and the rear spring 312 rebound, causing the lifting frame 211 and the lifting cylinder 210 to rise and reset quickly. At this time, the half-tooth gear 304 and the lower bevel gear 314 begin to mesh, causing the upper pressure rod 109 to rotate outward and reset, and the lower stress detection plate 117 to descend and reset. Then the contact post 306 returns to the intersection of the holding section 3031 and the rapid rising section 3034, and the machining is completed.

[0049] like Figures 1-11As shown, a method for detecting stress in a steel product drilling process includes the following steps: 1. Place the steel product on the base frame 101; 2. Rapidly lower the drill bit 209 until it contacts the upper surface of the steel product; 3. Simultaneously, the upper stress detection plate 112 adheres to the upper surface of the steel product, and the lower stress detection plate 117 adheres to the lower surface of the steel product; 4. Drill a hole in the steel product using the drill bit 209, and the upper and lower stress detection plates 112 and 117 detect the stress in the steel product; 5. Rapidly raise the drill bit 209, and the upper and lower stress detection plates 112 and 117 reset; 6. Remove the steel product after drilling and testing.

[0050] The working principle of the stress detection device for drilling steel products disclosed in this invention is as follows: During use, the steel product to be tested is placed on the base frame 101. In the initial state, the contact post 306 is located at the intersection of the holding section 3031 and the rapid rising section 3034. The half-tooth gear 304 meshes with the mating gear 313. The half-tooth gear 304 drives the mating gear 313 to rotate, which in turn drives the lower bevel gear 314 to rotate. The lower bevel gear 314 drives the side bevel gear 103 to rotate, which in turn drives the bidirectional threaded post 102 to rotate. The bidirectional threaded post 102 then drives the outer slider 104 to slide inward along the base frame 101. The outer sliding triangular block 106 slides outward via the outer rotating rod 105. The outer sliding triangular block 106 drives the side lifting frame 107 to rise via the inclined plane. The lifting spring 108 is compressed. The rise of the side lifting frame 107 drives the upper pressure rod 109 to rotate via the sliding of the upper column 111 in the slide groove 110. This causes the four upper stress detection plates 112 to adhere to the upper surface of the steel product. The upper pressure rod 109 clamps the upper surface of the steel product. At the same time, the rotation of the bidirectional threaded column 102 drives the inner slider 113 to slide inward, which drives the inner rotating rod 114 to rotate. In conjunction with the sliding of the fixed column 119 in the inner slide groove 115, the lower slider 120 rises and moves downward. The sliding of block 120 at the bottom of lifting plate 116 causes lifting plate 116 and lower stress detection plate 117 to rise, so that lower stress detection plate 117 is in contact with the lower surface of the steel product. The lower spring 118 has a certain amount of compression. When upper stress detection plate 112 and lower stress detection plate 117 are in contact with the upper and lower surfaces of the steel product, half gear 304 disengages from mating gear 313, and side bevel gear 103 and double-threaded column 102 stop rotating. When drilling the steel product, the stress generated in the steel product during processing is detected by upper stress detection plate 112 and lower stress detection plate 117. Due to the four-segment thread on the double-threaded column 102... All are bidirectional external threads. When the half gear 304 meshes with the mating gear 313 again, the side bevel gear 103 and the bidirectional threaded column 102 continue to rotate. At this time, the outer slider 104 and the inner slider 113 begin to slide outward, the outer sliding triangle block 106 slides inward, the lifting spring 108 rebounds, the side lifting frame 107 descends, causing the upper pressure rod 109 to rotate and reset. The inner slider 113 drives the lower slider 120 to descend through the inner rotating rod 114. The lower stress detection plate 117 and the lifting plate 116 descend and reset. At this time, the main motor 301 stops, and the contact column 306 is located at the intersection of the holding section 3031 and the rapid rising section 3034, returning to the initial state.The main motor 301 drives the column 302 to rotate counterclockwise via a transmission belt. The column 302 drives the half-tooth gear 304 to rotate. The track wheel 303 drives the slide rod 305 to slide along the upper frame 201 via the contact column 306. The slide rod 305 drives the active rack rod 307 to slide along the upper frame 201. The active rack rod 307 drives the lifting frame 211 and the lifting cylinder 210 to rise and fall via the front rotating rod 308. At the same time, the active rack rod 307 drives the passive rack rod 310 to slide along the upper frame 201 via gear transmission, and synchronously drives the lifting frame 211 and the lifting cylinder 210 to rise and fall via the rear rotating rod 311. The drilling motor 202 drives the vertical shaft 203 to rotate via the output belt 204. The vertical shaft 203 drives the upper gear 206 and the inner rotating column 207 to rotate via the upper transmission belt 205. The inner rotating column 207 drives the middle rotating cylinder 208 and the drill bit 209 to rotate, and drills holes in steel products through the lifting frame 211.

[0051] That is, when the contact post 306 is located in the rapid ascent section 3034, the holding section 3031, and the rapid descent section 3032, the lower bevel gear 314 meshes with the half-tooth gear 304. When the contact post 306 is located in the machining section 3033, the half-tooth gear 304 disengages from the lower bevel gear 314. In the initial state, the contact post 306 is located at the intersection of the holding section 3031 and the rapid ascent section 3034, the track wheel 303 rotates counterclockwise, and the contact post 306 enters the holding section 3031. As the bevel gear 314 rotates, the upper pressure rod 109 rotates inward and the lower stress detection plate 117 rises. Then, the contact post 306 enters the rapid descent section 3032. At this time, the rapid descent section 3032 pushes the slide rod 305, compressing the front spring 309 and the rear spring 312. The lifting frame 211 and the lifting cylinder 210 descend rapidly, causing the end of the drill bit 209 to contact the upper surface of the steel product. Meanwhile, the lower bevel gear 314 continues to rotate, causing the upper stress detection plate 112 to contact the upper surface of the steel product. The upper stress detection plate 117 is in contact with the lower surface of the steel product. When the contact post 306 enters the processing section 3033, the half gear 304 disengages from the lower bevel gear 314. The upper stress detection plate 112 and the lower stress detection plate 117 remain in contact with the upper and lower surfaces of the steel product. The processing section 3033 slowly pushes the slide rod 305 and the contact post 306, further compressing the front spring 309 and the rear spring 312. The upper stress detection plate 112 rotates at high speed while descending slowly. Drilling is performed. When the contact post 306 enters the rapid rising section 3034, the drilling is completed. The front spring 309 and the rear spring 312 rebound, causing the lifting frame 211 and the lifting cylinder 210 to rise and reset quickly. At this time, the half-tooth gear 304 and the lower bevel gear 314 begin to mesh, causing the upper pressure rod 109 to rotate outward and reset, and the lower stress detection plate 117 to descend and reset. Then the contact post 306 returns to the intersection of the holding section 3031 and the rapid rising section 3034, and the machining is completed.

[0052] This invention is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort are within the protection scope of this invention.

Claims

1. A stress detection device for drilling steel products, comprising a stress mechanism for detecting the stress generated during drilling of steel products, characterized in that: The stress mechanism includes a base frame (101), and the stress mechanism is provided with a drilling mechanism and an actuation mechanism for drilling steel products. The stress mechanism includes a bidirectional threaded column (102) rotatably mounted in the base frame (101), a side bevel gear (103) fixedly mounted on the bidirectional threaded column (102), and four bidirectional external threads on the bidirectional threaded column (102), the threads being trapezoidal threads; The punching mechanism includes an upper frame (201) fixedly installed on a base frame (101), a lifting cylinder (210) slidably installed on the upper frame (201), and a lifting frame (211) fixedly installed on the lifting cylinder (210). The stress mechanism also includes two outer sliders (104) that are slidably installed in the base frame (101). The outer sliders (104) and the two bidirectional external threads on the outer side of the bidirectional threaded column (102) form a threaded transmission. An outer rotating rod (105) is rotatably installed on the outer sliders (104). The base frame (101) is provided with four upper clamping modules. Each upper clamping module includes an outer sliding triangular block (106) that is slidably installed in the base frame (101). The outer sliding triangular block (106) has a slope. The outer sliding triangular block (106) is rotatably installed with an outer rotating rod (105). A side lifting frame (107) is slidably installed in the base frame (101). The side lifting frame (107) and the slope of the outer sliding triangular block (106) form a sliding fit. An upper column (111) is fixedly installed on the side lifting frame (107). A lifting spring (108) is provided between the side lifting frame (107) and the base frame (101). An upper pressure rod (109) is rotatably installed on the base frame (101). A sliding groove (110) is provided on the upper pressure rod (109). The upper column (111) slides in the sliding groove (110). An upper stress detection piece (112) is fixedly installed on the upper pressure rod (109). Two inner sliders (113) are slidably installed inside the base frame (101). The inner sliders (113) and the two bidirectional external threads on the inner side of the bidirectional threaded column (102) form a threaded transmission. Two inner rotating rods (114) are rotatably installed on the inner sliders (113). The inner rotating rods (114) are provided with inner sliding grooves (115). A fixed column (119) is fixedly installed inside the base frame (101). The fixed column (119) slides in the inner sliding groove (115). A lower slider (120) is rotatably installed on the inner rotating rods (114). A lifting plate (116) is slidably installed on the lower slider (120). A lower spring (118) is fixedly installed on the lifting plate (116). A lower stress detection plate (117) is fixedly installed at the other end of the lower spring (118). The actuation mechanism includes a main motor (301) fixedly installed below the upper frame (201), a column (302) rotatably installed on the base frame (101), a track wheel (303) and a half-tooth gear (304) fixedly installed on the column (302), a mating gear (313) rotatably installed on the base frame (101), a lower bevel gear (314) fixedly installed below the mating gear (313), the lower bevel gear (314) meshes with the side bevel gear (103), the half-tooth gear (304) meshes with the mating gear (313), and the main motor (301) drives the column (302) to rotate through belt drive; A slide rod (305) is slidably mounted on the upper frame (201). A contact post (306) is fixedly mounted on the slide rod (305). The contact post (306) cooperates with the track wheel (303). An active rack rod (307) is fixedly mounted on the slide rod (305). A front spring (309) is provided between the active rack rod (307) and the upper frame (201). A front rotating rod (308) is rotatably mounted on the front spring (309). The front rotating rod (308) is connected to the lifting... The lowering frame (211) is rotatably installed, and a passive rack rod (310) is slidably installed on the upper frame (201). The active rack rod (307) drives the passive rack rod (310) to slide along the upper frame (201) through gear transmission. A rear spring (312) is provided between the passive rack rod (310) and the upper frame (201). A rear rotating rod (311) is rotatably installed on the passive rack rod (310). The rear rotating rod (311) is rotatably installed with the lifting frame (211). The outer contour of the track wheel (303) is composed of a holding section (3031), a rapid descent section (3032), a processing section (3033), and a rapid ascent section (3034).

2. The stress detection device for drilling steel products according to claim 1, characterized in that: The punching mechanism also includes a punching motor (202) fixedly mounted on the upper frame (201), a vertical shaft (203) rotatably mounted on the upper frame (201), the punching motor (202) drives the vertical shaft (203) to rotate through the output belt (204), an inner rotating column (207) rotatably mounted on the upper frame (201), an upper gear (206) fixedly mounted on the inner rotating column (207), and the vertical shaft (203) drives the upper gear (206) to rotate through the upper transmission belt (205).

3. The stress detection device for drilling steel products according to claim 2, characterized in that: The lifting cylinder (210) has a rotating intermediate cylinder (208) installed inside by a rolling bearing. The intermediate cylinder (208) is slidably installed with the inner rotating column (207). A drill bit (209) is fixedly installed below the intermediate cylinder (208).

4. The detection method of the stress detection device for drilling steel products according to claim 3, characterized in that: The steps are as follows:

1. Place the steel product on the base frame (101); 2. The drill bit (209) descends rapidly until it contacts the upper surface of the steel product; 3. At the same time, the upper stress detection plate (112) is attached to the upper surface of the steel product, and the lower stress detection plate (117) is attached to the lower surface of the steel product; 4. Drill holes in the steel product through the drill bit (209), and the upper stress detection plate (112) and the lower stress detection plate (117) perform stress detection on the steel product; 5. The drill bit (209) rises rapidly, and the upper stress detection plate (112) and the lower stress detection plate (117) return to their original positions.

6. Remove the steel products that have completed the drilling and inspection.

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