Processing method of nickel-copper-nickel triangular bar

Abstract

The invention relates to the technical field of bar machining, in particular to a nickel-copper-nickel triangular bar machining method which comprises the following steps that S1, a cast ingot is heated to form a triangular bar blank; s2, reducing treatment is carried out; s3, annealing heat treatment; s4, electroplating treatment; and S5, quality detection. Wherein a detection device used in the step S5 comprises a detection platform, a CCD (Charge Coupled Device) camera and a positioning mechanism. The bar is limited and propped through the pre-positioning part and the propping part, so that the three circumferential end faces of the bar face upwards in sequence, the three end faces of the bar are photographed and sampled in sequence through the CCD camera, and the bar quality is detected according to the obtained bar surface image information; according to the detection mode, the problem that the detection quality is affected by fatigue caused by naked eye detection of personnel is avoided, meanwhile, the detection requirement in the batch bar production process is met, it is ensured that the CCD camera is perpendicular to the corresponding shooting end face during shooting, and the accuracy of image collection is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bar processing, and specifically to a processing method for nickel silver triangular bars. Background Art

[0002] Nickel silver triangular bars are rod-shaped materials with a triangular cross-section. They combine the advantages of copper and nickel, where nickel is the main alloying element, having advantages such as good corrosion resistance, excellent mechanical properties, good thermal conductivity, and electrical conductivity, and are widely used in fields such as ocean engineering, electronics and electrical engineering, instrumentation, etc.

[0003] Currently, the processing method of nickel silver triangular bars mainly includes steps such as raw material preparation, melting and casting, hot working, cold working, heat treatment, surface treatment, quality inspection, and packaging and storage. Among them, quality inspection is one of the most important steps. The items of quality inspection include dimensional accuracy measurement, chemical composition analysis, mechanical property testing, surface quality inspection, etc. The surface defects of nickel silver triangular bars will affect the appearance quality, dimensional accuracy, and performance of nickel silver triangular bars. Through the surface quality inspection step, defects such as cracks, pores, scratches, and peeling on the bars can be detected in a timely manner. Therefore, surface quality inspection is the first type of quality inspection required. Currently, during surface quality inspection, surface defects are mainly detected by visual observation or optical microscopy.

[0004] The following problems exist in the above surface quality inspection process: When performing surface quality inspection by visual observation, the inspection speed is slow and personnel are prone to fatigue, and the overall efficiency and inspection effect are not good. Although using an optical microscope can provide clear images, it requires personnel to adjust and observe each field of view one by one, which is time-consuming and laborious, and it is difficult to meet the rapid inspection requirements during large-scale production.

[0005] Secondly, currently, to solve the above problems, a CCD camera is usually used to photograph the surface of the bar and collect surface data, and then image processing and analysis are performed to detect the surface image of the bar. When detecting triangular bars, the placement state of the triangular bars will directly affect the accuracy of the collected data, that is, the inclined detection end face of the bar causes uneven light emission, resulting in deformation of the collected image, thereby affecting the accuracy of image acquisition and ultimately affecting the accuracy of the detection result. In addition, when fixing the triangular bar, it will also block the detection area of the triangular bar bag, thereby affecting the detection result. Summary of the Invention

[0006] Based on this, it is necessary to provide a processing method for nickel silver triangular bars, aiming to solve the problems of the above-mentioned existing technologies.

[0007] The present application provides a processing method for nickel silver triangular bars, comprising the following steps: S1. Heat a nickel silver ingot in a heating furnace, and initially process it into a triangular bar blank by means of die extrusion or pass rolling processing methods.

[0008] S2. Use a triangular drawing die to perform multi-pass diameter reduction processing on the triangular bar blank to obtain a triangular bar.

[0009] S3. Perform annealing heat treatment on the triangular bar after diameter reduction processing.

[0010] S4. Perform surface electroplating treatment on the triangular bar after heat treatment cooling, and coat a layer of alloy coating on the surface.

[0011] S5. Perform quality inspection on the processed triangular bar.

[0012] Among them, in step S5, a detection device is used to sequentially detect the three end faces of the triangular bar. The detection device includes a detection platform, and a detection part that slides left and right and is located above the detection platform is arranged on the detection platform. The detection part includes a CCD camera for quickly collecting image information on the surface of the bar.

[0013] A positioning mechanism is arranged on the detection platform. The positioning mechanism includes a lifting table. A lifting table for supporting the bar is arranged on the upper end face of the detection platform. Two symmetrically arranged multi-stage hydraulic rods are arranged on the detection platform. A pre-positioning part is arranged on the second telescopic section of the multi-stage hydraulic rod, and a pressing part is arranged on the first telescopic section.

[0014] The pre-positioning part includes three positioning plates that are slidably arranged left and right on the second telescopic section and correspond to the apex angles of the bar one by one and are V-shaped. The bar is positioned by fitting the V-shaped areas of the three positioning plates on the same side to the apex angles of the bar.

[0015] The pressing part includes a pressing table and a plurality of positioning columns arranged on the pressing table. The left and right two pressing tables press the bar for left and right direction positioning, and the plurality of positioning columns circumferentially position the bar.

[0016] A switching part is arranged on the lifting table. During the process of the pressing table pressing the bar, the positioning plates are displaced out through the switching part, maintaining the positioning of the bar while avoiding the image acquisition process.

[0017] According to an advantageous embodiment, the pre-positioning part further includes an installation strip. Two symmetrically arranged upper and lower installation strips are fixedly arranged on the second telescopic section. An installation rod with an axis extending from left to right is slidably penetrated through the installation strip left and right. An installation ring is fixedly arranged on the side of the two installation rods close to the lifting table together.

[0018] According to an advantageous embodiment, the three positioning plates on the same side together form a triangular frame. The longitudinal interface area formed by the extension of the inner end faces of the three positioning plates fits the longitudinal section of the bar, and the inner end face of the positioning plate facing the lifting table is chamfered.

[0019] According to an advantageous embodiment, a pressing spring sleeved on the mounting rod is fixedly arranged between the mounting ring and the mounting strip.

[0020] According to an advantageous embodiment, the pressing part further includes a V-shaped frame. The pressing table is rotatably arranged on the first telescopic section. The bar is limited and pressed in the left-right direction by the left-right pressing of the bar by two pressing tables. V-shaped frames corresponding to the positioning plates are fixedly arranged on the pressing tables. The positioning columns are fixedly arranged on the branches of the V-shaped frames, and two positioning columns correspond to the same positioning plate. The corresponding two positioning columns are in close contact with the end faces on both sides of the corresponding top angle of the bar. The bar is limited in a triangular manner by the contact limiting method of the corresponding two positioning columns on the corresponding top angle of the bar. Through grooves corresponding to the two corresponding positioning columns are arranged on the end face of the positioning plate close to the bar.

[0021] According to an advantageous embodiment, the switching part includes a moving table. Two moving tables distributed on the left and right sides of the lifting table are arranged on the upper end face of the detection platform. A U-shaped frame is slidably arranged left and right on the moving table. Pushing blocks for pushing the mounting ring are fixedly arranged on the two vertical sections of the U-shaped frame. Two L-shaped frames symmetrically arranged front and back are slidably arranged left and right on the moving table. Rack teeth are fixedly arranged between the two L-shaped frames and on the U-shaped frame. A gear rotatably arranged on the moving table is arranged between the two rack teeth, and the gear meshes with the rack teeth.

[0022] According to an advantageous embodiment, the switching part further includes a plugging frame. The plugging frame is plugged on the L-shaped frame. An L-shaped force-bearing block is fixedly arranged on the plugging frame. A pushing plate corresponding to the force-bearing block is fixedly arranged on the first telescopic section. The vertical section of the force-bearing block is pushed by the pushing plate to move the L-shaped frame.

[0023] According to an advantageous embodiment, angle-setting parts for controlling the angle of the bar after being clamped are arranged on both of the two pressing tables. The angle-setting part includes a fixing plate. Three circumferentially distributed fixing plates are fixedly arranged on the opposite faces of the two pressing tables. A moving rod is vertically and slidably penetrated through the fixing plate. A clamping block is fixedly arranged on the moving rod. A reset spring sleeved on the moving rod is fixedly arranged between the clamping block and the fixing plate.

[0024] According to an advantageous embodiment, when the positioning plates in right-angle clamping cooperation with the bar are sequentially matched with the three clamping blocks, the three end faces of the bar face directly upward in sequence. The clamping block is triangular, and the top angle of the clamping block is far from the axis of the pressing table.

[0025] According to a preferred embodiment, a plug rod is fixedly arranged on the left end face of the mounting bar at the lower left side, and a plug cylinder is fixedly arranged on the right end face of the mounting bar at the lower right side. The plug rod is inserted into the plug cylinder, so that the left and right mounting rings are integrated left and right.

[0026] In summary, the present invention has at least one of the following beneficial effects: First, in the present invention, the bar is limited and tightened by the pre-positioning part and the pressing part, so that the three circumferential end faces of the bar face upward in sequence. Then, the CCD camera takes pictures of the three end faces of the bar in sequence for sampling, and the quality of the bar is detected according to the obtained surface image information of the bar. This detection method avoids the problem that the detection quality is affected by the fatigue of manual visual inspection, and at the same time meets the detection requirements in the batch production process of bars. Secondly, through the shooting detection method, the surface information of the bar can be quickly collected, and the bar can be quickly scanned and detected, improving the detection efficiency of the bar. At the same time, it is ensured that the CCD camera is perpendicular to the corresponding shooting end face during shooting, improving the accuracy of image acquisition.

[0027] Second, in the present invention, the bar is pre-positioned by clamping the bar into the positioning plate, and then the positioning column takes over the positioning state of the positioning plate for positioning. The positioning in the circumferential direction of the bar is completed by the triangulation method, so that the bar maintains a horizontal state and the three end faces of the bar are arranged in the set orientations, ensuring that the CCD camera is perpendicular to the shooting end face during shooting, and avoiding the problem that the shooting end face is inclined due to the inclination of the bar, which affects the accuracy of image acquisition. In summary, the stability during the shooting of the bar and the accuracy of the detection result are improved.

[0028] Third, in the present invention, the upper positioning plate is in contact and cooperation with the corresponding three clamping blocks in sequence, that is, taking the cooperation between the inner angle of the positioning plate and the clamping block as the detection angle reference, and controlling the circumferential end faces of the bar corresponding to the clamping blocks to face upward in sequence, ensuring that the corresponding circumferential end faces of the bar are horizontal and face upward when the CCD camera shoots. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0030] Figure 1 FIG. shows a schematic flow chart of a processing method for a cupronickel triangular bar according to an embodiment of the present invention.

[0031] Figure 2The three-dimensional structural schematic diagram among the detection platform, the CCD camera and the positioning mechanism provided according to an embodiment of the present invention is shown.

[0032] Figure 3 The three-dimensional structural schematic diagram among the multi-stage hydraulic rod, the switching part and the lifting table provided according to an embodiment of the present invention is shown.

[0033] Figure 4 The front view among the plugging rod, the plugging cylinder and the positioning plate provided according to an embodiment of the present invention is shown.

[0034] Figure 5 The three-dimensional structural schematic diagram among the multi-stage hydraulic rod, the pushing plate and the stress-bearing block provided according to an embodiment of the present invention is shown.

[0035] Figure 6 The side view among the multi-stage hydraulic rod, the mounting ring and the V-shaped frame provided according to an embodiment of the present invention is shown.

[0036] Figure 7 The three-dimensional structural schematic diagram among the clamping block, the pressing strip and the positioning plate provided according to an embodiment of the present invention is shown.

[0037] Figure 8 The change schematic diagram of the detection angle of the bar limited by the fixed-angle part provided according to an embodiment of the present invention is shown.

[0038] Among them, the above-mentioned drawings include the following reference numerals: 1, detection platform; 2, CCD camera; 3, positioning mechanism; 30, lifting table; 31, multi-stage hydraulic rod; 310, first telescopic section; 311, second telescopic section; 32, pre-positioning part; 320, positioning plate; 321, mounting strip; 322, mounting rod; 323, mounting ring; 324, rib plate; 325, pressing spring; 33, pressing part; 330, pressing table; 331, positioning column; 332, V-shaped frame; 333, through groove; 34, switching part; 340, moving table; 341, U-shaped frame; 342, pushing block; 343, L-shaped frame; 344, rack; 345, gear; 346, plugging frame; 347, stress-bearing block; 348, pushing plate; 35, fixed-angle part; 350, fixing plate; 351, moving rod; 352, clamping block; 353, reset spring; 36, plugging rod; 360, plugging cylinder. Detailed implementation manners

[0039] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following provides a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0040] As Figure 1 shown, a processing method for a nickel silver triangular bar includes the following steps: S1. Heating the ingot to form a triangular bar blank: Heat the nickel silver ingot in a heating furnace and initially process it into a triangular bar blank by using a die extrusion or pass rolling processing method. The temperature of the heating furnace is heated to between 850 and 950 °C to avoid overburning, and then keep it warm for 1 to 2 hours. At the same time, a protective atmosphere is filled during the heating process to prevent oxidation.

[0041] S2. Reducing the diameter: Use a triangular drawing die to perform multi-pass diameter reduction on the triangular bar blank to obtain a triangular bar. The deformation amount per pass is ≤ 15%. Annealing treatment is carried out between passes. The annealing temperature is between 600 and 700 °C, and then keep it warm for 1 hour to eliminate stress, restore the plasticity and toughness of the material, and improve the tissue stability of the material.

[0042] S3. Annealing heat treatment: Perform annealing heat treatment on the triangular bar after diameter reduction treatment. The requirements for the annealing treatment are the same as those for the inter-pass annealing treatment in step S2.

[0043] S4. Electroplating treatment: Perform surface electroplating treatment on the triangular bar after heat treatment cooling, and coat a layer of alloy coating on the surface. The common electroplating surface treatment method is electroless plating, and an alloy coating is formed on the surface of the triangular bar through a chemical reaction, which has good uniformity and corrosion resistance.

[0044] S5. Quality inspection: Perform quality inspection on the processed triangular bar. The most important quality inspection is the surface quality inspection to check whether there are defects such as cracks, scratches, and pores on the surface of the bar.

[0045] As Figure 2 shown, in step S5, a detection device is used to sequentially detect the three circumferential end faces of the triangular bar. The detection device includes a detection platform 1. A detection part that slides left and right and is located above the detection platform 1 is arranged on the detection platform 1. The detection part includes a CCD camera 2 for quickly collecting image information on the surface of the bar and a driving component for driving the CCD camera 2 to move left and right. The driving component adopts the prior art.

[0046] As Figure 2 , Figure 3 and Figure 4As shown in the figure, a positioning mechanism 3 is provided on the detection platform 1. The positioning mechanism 3 includes a lifting table 30. The upper end surface of the detection platform 1 is provided with a lifting table 30 for supporting the bar. After the bar is positioned and locked, the lifting table 30 is driven by an existing hydraulic cylinder to descend and separate from the bar. Two symmetrically arranged multi-stage hydraulic rods 31 are provided on the detection platform 1. A pre-positioning part 32 is provided on the second telescopic section 311 of the multi-stage hydraulic rod 31, and a tightening part 33 is provided on the first telescopic section 310.

[0047] As Figure 3 and Figure 6 shown, the pre-positioning part 32 includes three positioning plates 320 that are slidably arranged on the second telescopic section 311 from left to right and correspond to the apex angles of the bar one by one and are V-shaped. The bar is positioned by fitting the V-shaped area of the three positioning plates 320 on the same side to the apex angle of the bar.

[0048] As Figure 3 , Figure 6 and Figure 7 shown, the tightening part 33 includes a tightening table 330 and a plurality of positioning columns 331 arranged on the tightening table 330. The two tightening tables 330 on the left and right tighten the bar for positioning in the left and right directions, and the plurality of positioning columns 331 circumferentially position the bar.

[0049] As Figure 3 , Figure 4 and Figure 7 shown, a switching part 34 is provided on the lifting table 30. During the process of the tightening table 330 tightening the bar, the positioning plate 320 is displaced out again through the switching part 34, avoiding the problem that the positioning plate 320 covers the surface of the bar and affects the detection process.

[0050] During operation, first place the bar to be detected on the lifting table 30, and then the multi-stage hydraulic rods 31 on both sides start working at the same time. The first telescopic section 310 and the second telescopic section 311 of the multi-stage hydraulic rod 31 extend at the same time, first making the positioning plates 320 in the two pre-positioning parts 32 approach the plate material. Finally, the three positioning plates 320 in the same pre-positioning part 32 are stuck on the adjacent ends of the bar, and the bar is preliminarily positioned by the corresponding three positioning plates 320. And through the pre-positioning actions on the left and right sides, the bar is in a horizontal state. Thus, the preliminary positioning of the bar is completed.

[0051] Then, as the multi-stage hydraulic rod 31 continues to operate, the second telescopic section 311 of the multi-stage hydraulic rod 31 extends out of the set area, and the first telescopic section 310 of the multi-stage hydraulic rod 31 begins to gradually extend, so the first telescopic section 310 drives the corresponding clamping platform 330 to clamp the bar, and the left and right directions of the bar are limited by the clamping action of the left and right clamping platforms 330. At the same time, the clamping platform 330 drives the positioning column 331 thereon to move synchronously and position the bar circumferentially. Secondly, in the above process, the positioning plate 330 is made to move synchronously by the switching unit 34. 20 releases the positioning of the rod, the positioning plate 320 no longer contacts the end face of the rod, and the positioning column 331 replaces the positioning plate 320 to position the rod. Since the area of ​​the positioning column 331 is much smaller than the positioning plate 320, the area of ​​the rod covered by the positioning column 331 will not affect the quality of the image information collected by the CCD camera 2, that is, it will not affect the subsequent detection process based on the image information, and avoid the subsequent detection process being affected by the positioning plate 320 covering too large an area of ​​the rod. At this point, the rod is positioned to the set state, and then the lifting platform 30 moves down.

[0052] Finally, the rod is rotated so that the three end faces of the rod are facing upward in sequence. At the same time, the CCD camera 2 works to take pictures and samples the three end faces of the rod in sequence, and the quality of the rod is detected based on the obtained surface image information of the rod.

[0053] like Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the pre-positioning portion 32 also includes a mounting bar 321, and two mounting bars 321 symmetrically arranged in an upper and lower direction are fixedly arranged on the second telescopic section 311. A mounting rod 322 with an axis extending from left to right is passed through the mounting bar 321 and slides left and right. A mounting ring 323 is fixedly arranged on one side of the two mounting rods 322 close to the lifting platform 30. In order to improve the installation strength of the positioning plate 320, the positioning plate 320 is fixedly arranged on the end face of the mounting ring 323 facing the lifting platform 30 through a rib plate 324. The three positioning plates 320 on the same side together form a triangular frame. The longitudinal interface area formed by the extension of the inner end faces of the three positioning plates 320 is matched with the longitudinal cross-section of the rod. In order to ensure that the positioning plate 320 moves to the surface area of ​​the rod during the left and right movement, the inner end face of the positioning plate 320 facing the lifting platform 30 is chamfered.

[0054] After the bar is placed on the lifting table 30, the multi-stage hydraulic rods 31 on both sides operate simultaneously, causing the second telescopic section 311 to drive the first telescopic section 310 to extend simultaneously. The second telescopic section 311 drives the mounting rod 322 and the mounting ring 323 to move synchronously through the mounting strip 321. The mounting ring 323 drives the V-shaped frame 332 thereon closer to the bar. Taking the positioning plate 320 on one side mounting ring 323 as an example, the three top corners of the bar are simultaneously caught in the V-shaped areas of the corresponding positioning plates 320. The three positioning plates 320 form a preliminary positioning for triangular guiding. By performing triangular positioning on both the left and right ends of the bar simultaneously, the positioning within the circumferential direction of the bar is completed, enabling the bar to maintain a horizontal state and the three end faces of the bar to be arranged according to the set orientations. It should be additionally noted that the positioning method forming a triangular framework highly fits the cross-section of the bar, improving the stability during the positioning and guiding process of the bar while ensuring the positioning accuracy.

[0055] As Figure 5 shown, a pressure spring 325 sleeved on the mounting rod 322 is fixedly arranged between the mounting ring 323 and the mounting strip 321. As Figure 3 , Figure 6 and Figure 7 shown, the pressing portion 33 further includes a V-shaped frame 332. The pressing table 330 is rotatably arranged on the first telescopic section 310. The bar is limited and pressed in the left and right directions by the two pressing tables 330 pressing against the bar from left and right. A V-shaped frame 332 corresponding to the positioning plate 320 is fixedly arranged on the pressing table 330. The positioning column 331 is fixedly arranged on the branch of the V-shaped frame 332, and two positioning columns 331 correspond to the same positioning plate 320. The corresponding two positioning columns 331 are in close contact with the end faces on both sides of the corresponding top corner of the bar. The bar is limited in a triangular manner by the contact and limitation of the adjacent two positioning columns 331 on the corresponding top corner of the bar. A through groove 333 corresponding to the two positioning columns 331 is opened on the end face of the positioning plate 320 close to the bar, and the free end of the positioning column 331 is chamfered.

[0056] As Figure 3 , Figure 4 and Figure 5As shown, the switching part 34 includes a moving platform 340. On the upper end surface of the detection platform 1, there are two moving platforms 340 distributed on the left and right sides of the lifting platform 30. The moving platforms 340 are fixedly arranged at set positions on the detection platform 1 manually according to the length dimension of the detected bar in advance. A U-shaped frame 341 is slidably arranged left and right on the moving platform 340. On the two vertical sections of the U-shaped frame 341, there are fixedly arranged pushing blocks 342 for pushing the mounting ring 323. On the moving platform 340, there are two L-shaped frames 343 that are symmetric front and back and slidably arranged left and right. Rack bars 344 are fixedly arranged between the two L-shaped frames 343 and on the U-shaped frame 341. Between the two rack bars 344, there is a gear 345 rotatably arranged on the moving platform 340, and the gear 345 meshes with the rack bars 344.

[0057] As Figure 3 , Figure 4 and Figure 5 shown, the switching part 34 further includes a plug-in frame 346. The plug-in frame 346 is plug-in arranged on the L-shaped frame 343. On the plug-in frame 346, there is fixedly arranged an L-shaped force-receiving block 347. On the first telescopic section 310, there is fixedly arranged a pushing plate 348 corresponding to the force-receiving block 347. By pushing the vertical section of the force-receiving block 347 with the pushing plate 348, the L-shaped frame 343 is moved.

[0058] First, before the detection operation, the position of the moving platform 340 on the detection platform 1 is adjusted left and right according to the length of the bar, and the moving platform 340 is locked to the detection platform 1 by means of bolt locking, and then the pre-positioning operation and the pressing operation are carried out.

[0059] After the positioning plate 320 moves to cover the bar for positioning, the second telescopic section 311 of the multi-stage hydraulic rod 31 moves to the set position and stops moving. Then, the first telescopic section 310 of the multi-stage hydraulic rod 31 extends alone, and the first telescopic section 310 drives the pressing platform 330 thereon to approach the bar synchronously. Finally, the pressing platform 330 moves to contact the side of the bar, and the left and right centering adjustment and the left and right limit of the bar are completed through the left and right pressing actions of the left and right pressing platforms 330. Secondly, it should be additionally noted that during the movement of the positioning plate 320, the pushing block 342 is located at the set position and blocks the mounting ring 323 from driving the positioning plate 320 to approach the bar excessively. It should be additionally noted that through the cooperation between the pushing plate 348 and the vertical section of the force-receiving block 347, the force-receiving block 347 can only move in the direction close to the bar, and through the cooperation between the corresponding two rack bars 344 and the gear 345, the pushing block 342 can only move in the direction away from the bar. Therefore, the pushing block 342 has a blocking effect of blocking the mounting ring 323 from approaching the bar excessively.

[0060] It should be noted that before the pressing platform 330 moves, the plug-in frame 346 is installed on the corresponding L-shaped frame 343 by plug-in installation. Then, during the movement of the pressing platform 330, the first telescopic section 310 drives the pushing plate 348 thereon to move synchronously, and the pushing plate 348 pushes the vertical section of the corresponding force-bearing block 347, thereby driving the corresponding L-shaped frame 343 and the corresponding upper rack 344 to move synchronously. Through the engagement between the upper rack 344 and the gear 345, the lower rack 344 drives the U-shaped frame 341 away from the rod, and the U-shaped frame 341 drives the pushing block 342 thereon to push the mounting ring 323, so that the pressure spring 325 is compressed, and the mounting ring 323 is installed. The mounting ring 323 also drives the positioning plate 320 thereon to move away from the rod, so when the clamping platform 330 approaches the rod, the positioning plate 320 moves away from the rod. During the movement of the clamping platform 330, the clamping platform 330 drives the positioning columns 331 thereon to gradually pass through the corresponding through slots 333 on the positioning plate 320, and then move to both sides of the top angle of the rod, that is, the two positioning columns 331 on the corresponding V-shaped frame 332 move to both sides of the top angle of the rod respectively. Therefore, when the clamping platform 330 presses against the rod, the triangular frame clamping of the rod is maintained by all the positioning columns 331 on the same side. At this point, the positioning plate 320 is separated from the end face of the rod, and the positioning columns 331 maintain the positioning of the rod.

[0061] After the overall inspection operation is completed, all devices are reset, and the elastic force generated by the deformation of the pressure spring 325 causes the mounting ring 323 to move and reset, so that the two mounting rings 323 are reset between the left and right abutment platforms 330, which is convenient for subsequent positioning and inspection operations.

[0062] like Figure 3 and Figure 7 As shown, the two abutting platforms 330 are both provided with a fixed angle portion 35 for controlling the angle of the bar after being clamped, and the fixed angle portion 35 includes a fixed plate 350. Three circumferentially distributed fixed plates 350 are fixedly provided on the opposite back surfaces of the two abutting platforms 330. A moving rod 351 is vertically slidably provided on the fixed plate 350, and a positioning block 352 is fixedly provided on the moving rod 351. A reset spring 353 sleeved on the moving rod 351 is fixedly provided between the positioning block 352 and the fixed plate 350. Figure 8 As shown, when the positioning plate 320 that cooperates with the rod at a right angle cooperates with the three positioning blocks 352 in sequence, the three end faces of the rod face upward in sequence, the positioning blocks 352 are triangular in shape, and the top angle of the positioning blocks 352 is away from the axis of the clamping platform 330.

[0063] After the positioning post 331 completes the contact positioning of the bar, the three included angles of the bar all face the set direction after the positioning operation. Then, the operator rotates the bar manually, and the bar drives the positioning post 331 and the pressing table 330 to rotate synchronously. At this time, the pressing table 330 is located between the corresponding three positioning plates 320. During the rotation process of the pressing table 330, the clamping blocks 352 thereon rotate synchronously. Taking the rotation of one of the clamping blocks 352 by a fixed angle as an example, during the rotation process of the clamping block 352, it gradually enters the V-shaped area of the upper positioning plate 320, and the set return spring 353 is in a compressed state. When the clamping block 352 moves to completely fit with the inner V-shaped area of the positioning plate 320, the elastic force generated by the deformation of the return spring 353 makes the clamping block 352 and the positioning plate 320 closely adhere. At this time, the inner included angle of the positioning plate 320 and the clamping block 352 are used as the detection angle reference, that is, the end face of the bar corresponding to the clamping block 352 faces directly upward. Then, the CCD camera 2 takes a picture and samples to obtain the sample data of the corresponding end face of the bar. Then, continue to rotate the bar to make the above-mentioned clamping block 352 move out of the V-shaped area of the upper positioning plate 320. In summary, the sampling process of the three end faces of the bar is completed through the cooperation of the three clamping blocks 352 with the corresponding upper positioning plates 320 in turn.

[0064] As Figure 4 shown, a plugging rod 36 is fixedly arranged on the left end face of the lower left mounting strip 321, and a plugging cylinder 360 is fixedly arranged on the right end face of the lower right mounting strip 321. The plugging rod 36 is inserted into the plugging cylinder 360, so that the left and right mounting rings 323 are integrated left and right.

[0065] During the process that the mounting ring 323 drives the positioning plate 320 to move close to the bar and perform the positioning operation, the lower two mounting strips 321 drive the plugging rod 36 and the plugging cylinder 360 to move synchronously. Finally, the plugging rod 36 is inserted into the plugging cylinder 360, so that the positioning processes on the left and right sides of the bar are integrated left and right, ensuring that the bar can maintain a horizontal state from left to right and ensuring the effectiveness of the information collected by the CCD camera 2.

[0066] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0067] In addition, the terms "first", "second", "No. 1", and "No. 2" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", "No. 1", or "No. 2" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0068] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "connected", "installed", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A processing method for a nickel silver triangular bar, characterized in that, It includes the following steps: S1. Heating the ingot to form a triangular bar blank: Heating the cupronickel ingot in a heating furnace and initially processing it into a triangular bar blank by means of die extrusion or pass rolling processing methods; S2. Reducing the diameter: Using a triangular drawing die to perform multi-pass diameter reduction on the triangular bar blank to obtain a triangular bar; S3. Annealing heat treatment: Performing annealing heat treatment on the triangular bar after diameter reduction treatment; S4. Electroplating treatment: Performing surface electroplating treatment on the triangular bar after heat treatment cooling, and plating a layer of alloy coating on the surface; S5. Quality inspection: Performing quality inspection on the processed triangular bar; Among them, in step S5, a detection device is used to sequentially detect the three end faces of the triangular bar. The detection device includes a detection platform, and a detection part that slides left and right and is located above the detection platform is arranged on the detection platform. The detection part includes a CCD camera for quickly collecting image information on the surface of the bar; A positioning mechanism is arranged on the detection platform. The positioning mechanism includes a lifting table. A lifting table for supporting the bar is arranged on the upper end face of the detection platform. Two symmetrically arranged multi-stage hydraulic rods are arranged on the detection platform. A pre-positioning part is arranged on the second telescopic section of the multi-stage hydraulic rod, and a tightening part is arranged on the first telescopic section; The pre-positioning part includes three positioning plates that are slidably arranged left and right on the second telescopic section and correspond to the apex angles of the bar one by one and are in a V shape. The bar is positioned by fitting the V-shaped area of the three positioning plates on the same side to the apex angle of the bar; The tightening part includes a tightening table and a plurality of positioning columns arranged on the tightening table. The two left and right tightening tables tighten the bar to perform left and right direction positioning, and the plurality of positioning columns perform circumferential positioning on the bar; A switching part is arranged on the lifting table. During the process of the tightening table tightening the bar, the positioning plate is displaced out through the switching part to maintain the positioning of the bar while avoiding the process of collecting images; 2. The processing method of a nickel silver triangular bar according to claim 1, characterized in that: The pre-positioning part further includes an installation strip. Two symmetrically arranged upper and lower installation strips are fixedly arranged on the second telescopic section. An installation rod with an axis extending from left to right is slidably penetrated through the installation strip left and right. A mounting ring is fixedly arranged on the side of the two installation rods close to the lifting table; 3. The processing method of a nickel silver triangular bar according to claim 1, characterized in that: The three positioning plates on the same side jointly form a triangular frame. The longitudinal interface area extended from the inner end faces of the three positioning plates fits the longitudinal section of the bar. The inner end face of the positioning plate facing the lifting table is chamfered; 4. The processing method of a nickel silver triangular bar according to claim 2, characterized in that: A pressing spring sleeved on the installation rod is jointly fixedly arranged between the mounting ring and the installation strip; 5. The processing method of a nickel silver triangular bar according to claim 1, characterized in that: The tightening part further includes a V-shaped frame. The tightening table is rotatably arranged on the first telescopic section. The bar is limited and tightened in the left and right directions by the two left and right tightening tables. A V-shaped frame corresponding to the positioning plate is fixedly arranged on the tightening table. The positioning column is fixedly arranged on the branch of the V-shaped frame. And two positioning columns correspond to the same positioning plate. The corresponding two positioning columns are in close contact with the end faces on both sides of the corresponding apex angle of the bar. The bar is limited in a triangular manner by the contact limiting method of the adjacent two positioning columns on the corresponding apex angle of the bar. Through grooves corresponding to the two positioning columns are opened on the end face of the positioning plate close to the bar; 6. The processing method of a nickel silver triangular bar according to claim 2, characterized in that: The switching part includes a mobile station. There are two mobile stations arranged on the upper end surface of the detection platform, distributed on the left and right sides of the lifting table. A U-shaped frame is slidably arranged left and right on the mobile station. Pushing blocks for pushing the mounting ring are fixedly arranged on the two vertical sections of the U-shaped frame. Two L-shaped frames that are symmetrically arranged front and back are slidably arranged left and right on the mobile station. Rack bars are fixedly arranged between the two L-shaped frames and on the U-shaped frame. A gear rotatably arranged on the mobile station is arranged between the two rack bars, and the gear meshes with the rack bars.

7. The processing method of a nickel silver triangular bar according to claim 6, characterized in that: The switching part further includes a plug-in frame. The plug-in frame is plug-in arranged on the L-shaped frame. An L-shaped force-receiving block is fixedly arranged on the plug-in frame. A pushing plate corresponding to the force-receiving block is fixedly arranged on the first telescopic section. The vertical section of the force-receiving block is pushed by the pushing plate to move the L-shaped frame.

8. A processing method for a nickel silver triangular bar according to claim 1, characterized in that: Angle-setting parts for controlling the angle of the bar after being clamped are arranged on both of the two clamping platforms. The angle-setting part includes a fixing plate. Three circumferentially distributed fixing plates are fixedly arranged on the opposite surfaces of the two clamping platforms. A moving rod is vertically and slidably penetrated through the fixing plate. A clamping block is fixedly arranged on the moving rod. A return spring sleeved on the moving rod is jointly fixedly arranged between the clamping block and the fixing plate.

9. The processing method of a nickel silver triangular bar according to claim 8, characterized in that: When the positioning plates that are in right-angle clamping cooperation with the bar are sequentially cooperated with the three clamping blocks, the three end faces of the bar face directly upward in sequence. The clamping block is triangular, and the apex angle of the clamping block is far from the axis of the clamping platform.

10. The processing method of a nickel silver triangular bar according to claim 2, characterized in that: A plug-in rod is fixedly arranged on the left end face of the lower right mounting strip, and a plug-in cylinder is fixedly arranged on the right end face of the lower left mounting strip. The plug-in rod is inserted into the plug-in cylinder, so that the left and right mounting rings are integrated left and right.

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