Automatic sample grinding device for cupronickel metallographic detection

Abstract

The invention relates to the technical field of auxiliary corollary equipment for metallographic detection, in particular to an automatic sample grinding device for cupronickel metallographic detection, which comprises a box body, a bottom plate, a reversing mechanism, an upper grinding mechanism, a pressing mechanism, an adjusting mechanism, a lower grinding mechanism, a connecting mechanism, a positioning mechanism and a control module, the position of a connecting mechanism is changed by arranging a lower grinding mechanism and a downward pressing mechanism capable of adjusting and keeping the adjusted position in a rectangular box body, a reversing mechanism capable of reversing is arranged to be matched with an upper grinding mechanism, the pressure and the grinding speed can be adjusted, the left side and the right side can work respectively, and the grinding efficiency is improved. According to the cupronickel sample grinding device, grinding of samples is well achieved, a good grinding effect is achieved, and the cupronickel sample grinding device further has the effects that the grinding speed of large-batch cupronickel samples is increased on the premise of stable operation, operation is easy, and the equipment use and maintenance cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of auxiliary equipment for metallographic inspection, and more particularly to an automatic grinding device for specimens of cupronickel metallographic inspection. Background Art

[0002] Cupronickel is a copper-based alloy mainly composed of nickel element and coexisting with other elements. Its metallic luster is white, so it is named cupronickel. Cupronickel has excellent corrosion resistance in use, and has the characteristics of being easy to shape, process and weld. It is widely used in industries such as shipbuilding, chemical industry, petroleum, electric power, precision instruments, medical devices, musical instruments, etc. After adjusting the element ratio inside cupronickel, it will also have special electrochemical properties and can be used to make resistance elements, thermocouple materials and compensating wires, etc.

[0003] Structurally, oxygen and nickel in cupronickel can form a dot-like Ni-NiO eutectic structure (containing about 0.24% oxygen). When the content of NiO continues to increase, the cupronickel alloy will show cold brittleness, that is, cracks, surface blistering and other phenomena will occur, resulting in the failure of products using this material, performance degradation, and even dangerous situations. Therefore, during large-scale production, especially in special industries, it is necessary to continuously sample and measure the metallographic structure of cupronickel alloy during the production process to ensure the stability of products in special industries. In the existing cupronickel specimen detection process, the specimen needs to be coarsely ground first to produce a flat surface, and then finely ground and polished. During the coarse grinding process, water and fine-grained grinding paste are generally used to assist in grinding, so that the grinding surface of the specimen is smoother. During the fine grinding process, a velvet polishing disc, pickling and reducing gas are used for protection until the grinding surface reaches a scratch-free state. The grinding effect of the existing polishing and grinding equipment is limited, and manual grinding treatment is still required. During the grinding process, the specimen is held by hand for grinding. This operation method has low efficiency. Especially when encountering a large number of specimen detections, the existing number of personnel is limited, and the requirements for grinding experience are relatively high, resulting in low grinding efficiency. Although some existing automatic grinding equipment can meet the grinding requirements of this experiment, its price is relatively high, and the number of grindings per time is small, which does not meet the actual situation of the company. Moreover, the maintenance cost after failure is high, and it requires the personnel of the grinding equipment company to solve it. The maintenance speed is slow, which is easy to delay the detection process. Therefore, it is necessary to design a special laboratory equipment for grinding a large number of cupronickel samples to solve these problems and improve the grinding speed and reduce the cost. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present application is to provide an automatic grinding device for specimens of cupronickel metallographic inspection that can effectively improve the grinding speed of a large number of cupronickel samples, is easy to operate, reduces the use and maintenance costs of the equipment, and has good stability.

[0006] The above application objectives of this application are achieved through the following technical solutions: An automatic grinding device for specimens in the metallographic inspection of cupronickel, comprising: a box body, a bottom plate, a commutation mechanism, an upper grinding mechanism, a downward pressing mechanism, an adjusting mechanism, a lower grinding mechanism, a connecting mechanism, a positioning mechanism, and a control module; The box body: The appearance of the box body is rectangular. The bottom plate is arranged on the inner wall of the box body near the lower end. The middle part of the box body is divided into two spaces on the left and right, and the upper end is open. One lower grinding mechanism is connected to each of the two spaces on the left and right of the box body; wherein the lower grinding mechanism is used to generate rotation to realize the grinding process, and its structure can be replaced by an existing desktop grinding device or the structure can be redesigned. The commutation mechanism: Comprising a commutation shaft and a support seat, the commutation shaft is rotatably connected to the middle position of the box body. The outer surface of the commutation shaft extending above the box body is fixedly connected with a connecting seat. Two connecting chutes are symmetrically arranged on the front and rear sides of the connecting seat respectively. The two ends of the support seat are fixedly connected to the corresponding box body below the bottom plate. A commutation motor is fixedly connected to the middle position of the support seat, and the upper end of the commutation motor is fixedly connected to the lower end of the commutation shaft. The upper grinding mechanism: Comprising two connecting brackets, the two connecting brackets are symmetrically arranged on both sides of the connecting seat without connecting chutes. The end parts of the connecting brackets are respectively slidably connected to the corresponding sides of the connecting chutes. Suspension blocks with an arc-shaped appearance and a T-shaped cross-section are respectively fixedly connected to the upper ends of the connecting brackets. Driving motors are respectively fixedly connected to the ends of the connecting brackets away from the commutation mechanism. A grinding frame is fixedly connected to the lower end of the driving motor. Pressure regulating rods are respectively arranged on both sides of the middle position of the grinding frame. A pressing plate is fixedly connected to the lower end of the pressure regulating rod. Springs are movably sleeved on the pressure regulating rods between the pressing plate and the grinding frame. The downward pressing mechanism: Comprising limit sleeves, the limit sleeves are symmetrically and fixedly connected to both sides of the box body. One end of a pressure regulating arm is slidably connected to each of the limit sleeves. The upper ends of the pressure regulating arms are respectively bent towards the middle position of the upper end of the box body. Semi-circular guide seats are respectively fixedly connected to the upper ends of the pressure regulating arms. T-shaped grooves are respectively opened at the middle positions of the lower surfaces of the guide seats. The suspension blocks are respectively slidably connected to the T-shaped grooves on the guide seats. The adjusting mechanism: includes a servo motor, a mounting block, a driving gear, and a tooth groove. The servo motors are symmetrically and fixedly connected to the box body on both sides of each limiting sleeve respectively. The end of the servo motor is fixedly connected with a driving gear. The mounting block is fixedly connected to the box body above the servo motor. A regulating shaft is rotatably connected to the mounting block. Transmission gears are fixedly connected to both ends of each regulating shaft respectively. Driving gears are fixedly connected to the middle parts of each regulating shaft respectively. The tooth grooves are equidistantly formed on the surface of the vertical part of the pressure regulating arm away from the box body side. The driving gear is meshed with the tooth groove; A grinding turntable is arranged at the upper end of the lower grinding mechanism; The connecting mechanism includes a limiting frame and a pressing air cushion. At the middle positions on the upper surfaces of both sides of the limiting frame, mating seats are respectively fixedly connected. The mating seats are connected with the connecting grinding frame through connecting pins. Threaded holes are equidistantly formed through the four sides of the limiting frame. Positioning screws are threadedly connected in the threaded holes. The pressing air cushion is fixedly connected to the lower end of the pressing plate; The positioning mechanism includes a vertical block, a transmitting probe A, a mating probe A, a mating probe B, and a transmitting probe B. The vertical blocks are symmetrically and fixedly connected to the upper surfaces of the middle positions of each guiding seat. The transmitting probes A are fixedly connected to the surfaces of the upper ends of the vertical blocks facing the reversing shaft. The mating probes A are fixedly connected to the surfaces of both sides of the reversing shaft. The mating probes B are fixedly connected to the surfaces of both sides of the connecting seat near the upper end. The transmitting probes B are fixedly connected to the surfaces of each guiding seat facing the connecting seat;

[0007] Optionally, the lower grinding mechanism further includes a mounting cover A, a connecting frame, a grinding motor, a grinding turntable, a support arm, a guiding ring, and a pressure sensor. The mounting covers A are respectively fixedly connected to the left and right spaces of the box body. The lower end of the mounting cover A is open. The connecting frame is fixedly connected to the inner wall near the lower end of the mounting cover A. The grinding motor is fixedly connected to the connecting frame. The support arms are fixedly connected to the outer surface near the upper end of the mounting cover A in an annular array. The lower ends of the guiding rings are respectively fixedly connected to the upper ends of the support arms. The grinding turntable is rotatably connected to the upper end of the guiding ring. The end of the output shaft of the grinding motor is fixedly connected to the middle part of the grinding turntable. The grinding turntable is respectively in cooperation with the lower end of the limiting frame;

[0008] Optionally, when the pressure regulating arm rises to the highest position, the transmitting probes A and the mating probes A on both sides correspond to each other respectively, and when the pressure regulating arm rises to the highest position, the mating probes B and the transmitting probes B on both sides are at the same horizontal height.

[0009] Optionally, a metering pump is further included, which is respectively arranged at the lower position of the outer sides of the four corners of the box body, the output end of the metering pump is connected to a conduit, the conduit is respectively fixedly connected to the inner walls of the four corners of the box body, the upper end of the conduit is respectively fixedly connected to a nozzle, and the outlet of the nozzle is respectively facing the grinding turntable.

[0010] Optionally, it also includes a sewage pipe, which is respectively arranged on one side of the lower end of each of the two spaces of the box body.

[0011] Optionally, a protective shell is also included, and the protective shell is fixedly connected to the surface of the box body corresponding to the adjustment mechanism.

[0012] Optionally, it also includes a mounting cover B, which is fixedly connected to a base plate corresponding to the lower end of the reversing shaft, and the reversing motor is arranged in the mounting cover B.

[0013] Optionally, it also includes guide bars and guide grooves, wherein the guide bars are symmetrically fixedly connected to the surfaces at the middle positions on both sides of the box body, and the guide grooves are respectively opened on the surface of the vertical part of the voltage regulating arm close to the side of the box body, and the guide bars are respectively slidably connected to the guide grooves on the corresponding sides.

[0014] Optionally, it also includes a guide sleeve, which is U-shaped in appearance and is symmetrically fixedly connected to the upper ends of the middle positions on both sides of the box body, and the pressure regulating arm is slidably connected to the middle of the guide sleeve.

[0015] The automatic grinding device for the sample of the white copper metallographic inspection adopts a partitioned structure and can perform two important processes, rough polishing and fine polishing, on a large number of existing samples. Among them, the middle position is designed as a one-piece type, which can ensure accurate positioning during the position conversion process. At the same time, when the reversing mechanism rotates the upper grinding mechanism to the middle position of the box body and after the grinding position is lifted, the sample can be replaced, thereby realizing a continuous grinding process. In the grinding, by adjusting the rotation speed and the amount of grinding aids pumped in, etc., manual operations are reduced, a single device can replace the work of multiple grinding personnel, and the adjustment is relatively convenient. By changing the water flow rate or adding abrasives of different diameters, the effect of merging multiple grinding processes can be achieved. There is no need for personnel to carry samples back and forth between multiple grinding devices, which greatly improves the work efficiency of grinding personnel. The automatic grinding device, wherein the rotation speed of the rotating motor used for grinding can be adjusted separately, and separate motor structures are respectively arranged on the upper and lower sides, so that different grinding requirements can be met by changing the rotation speed, and the servo motors arranged on the same side are driven by the same module, so that the driving force during the lifting process of each side is increased and stable; The automatic grinding device for the specimen of cupronickel metallographic inspection has greatly reduced costs compared with existing semi-automatic and automatic grinding equipment. Moreover, the fault points during subsequent use are easy to repair, which greatly reduces the usage cost. At the same time, it can meet the grinding requirements of a large number of cupronickel samples, improving the grinding speed and reducing costs. Brief Description of the Drawings

[0016] Figure 1 is the overall structure schematic diagram provided by an embodiment of the present application; Figure 2 is the overall structure schematic diagram after removing the protective shell provided by an embodiment of the present application; Figure 3 is the partial cross-sectional structure schematic diagram of the box body provided by an embodiment of the present application; Figure 4 is the structure schematic diagram of the commutation mechanism provided by an embodiment of the present application; Figure 5 is the structure schematic diagram of the upper grinding mechanism provided by an embodiment of the present application; Figure 6 is the structure schematic diagram of some components provided by an embodiment of the present application; Figure 7 is provided by an embodiment of the present application Figure 2 The enlarged structure schematic diagram at A in; Figure 8 is the bottom structure schematic diagram provided by an embodiment of the present application.

[0017] Reference Numerals: 1, box body; 2, bottom plate; 3, commutation mechanism; 31, commutation shaft; 32, connection seat; 33, connection chute; 34, commutation motor; 35, support seat; 4, upper grinding mechanism; 41, connection bracket; 42, suspension block; 43, drive motor; 44, grinding frame; 45, pressure regulating rod; 46, pressing plate; 47, spring; 5, lower pressing mechanism; 51, limiting sleeve; 52, pressure regulating arm; 53, guiding seat; 54, T-shaped groove; 6, adjusting mechanism; 61, servo motor; 62, driving gear; 63, mounting block; 64, adjusting shaft; 65, transmission gear; 66, driving gear; 67, tooth groove; 7, lower grinding mechanism; 71, mounting cover A; 72, connecting frame; 73, grinding motor; 74, grinding turntable; 75, support arm; 76, guiding ring; 77, pressure sensor; 8, connecting mechanism; 81, limiting frame; 82, matching seat; 83, connecting pin; 84, threaded hole; 85, positioning screw; 86, pressing air cushion; 9, positioning mechanism; 91, vertical block; 92, transmitting probe A; 93, matching probe A; 94, matching probe B; 95, transmitting probe B; 10, metering pump; 11, conduit; 12, guiding strip; 13, nozzle; 14, sewage pipe; 15, protective shell; 16, mounting cover B; 17, guiding sleeve; 18, control module; 19, guiding groove. Detailed implementation manners

[0018] The following further elaborates on this application in conjunction with the attached drawings.

[0019] To more clearly understand the technical solutions presented in the embodiments of this application, the working conditions of the sample grinding for the existing cupronickel metallographic inspection are first introduced.

[0020] In the existing metallographic grinding equipment, a grinding device directly driven by a motor to rotate the grinding wheel is used. During use, the sample of cupronickel alloy is held by hand and ground. After grinding, sandpaper or the grinding wheel is replaced to continue grinding, and the grinding process requires manual holding. There are also some existing automatic grinding equipment, but the existing automatic grinding equipment is all relatively small in volume, with a limited number of cupronickel samples that can be ground at a single time, and manual replacement is still required. When producing in some special industries, dozens of samples will be transported in a batch. In this case, the existing grinding equipment can no longer meet the grinding requirements of metal samples such as cupronickel. Therefore, it is necessary to redesign the existing precision equipment of this type to solve these problems, meet the actual needs, and improve the speed of metallographic inspection.

[0021] Please refer to Figures 1 to 8 , an automatic sample grinding device for cupronickel metallographic inspection disclosed in the embodiments of this application, including: a box body 1, a bottom plate 2, a commutation mechanism 3, an upper grinding mechanism 4, a pressing mechanism 5, an adjusting mechanism 6, a lower grinding mechanism 7, a connecting mechanism 8, a positioning mechanism 9, and a control module 18; through this modular split setting method, the functions of the components of the equipment can be made clearer, ensuring that an effective grinding effect can be formed under the single movement of different components, and making subsequent maintenance easier; The appearance of the box body 1 is in a rectangular structure, which is convenient for placing inside the laboratory, making better use of the space. The bottom plate 2 is arranged on the inner wall of the box body 1 near the lower end, so that there is a certain space between the bottom and the ground, and it does not directly contact the ground to avoid the influence of bottom moisture on the service life. The middle part of the box body 1 is set as two spaces on the left and right, and the upper end is open, which are used to respectively carry out the two steps of fine grinding and rough grinding. One lower grinding mechanism 7 is connected to each of the two spaces on the left and right of the box body 1. The two lower grinding mechanisms 7 provided can be respectively provided with grinding disks of different mesh numbers. One is used for rough grinding to remove scratches, rust, etc. on the sample surface, and the other is used for polishing to fully expose the internal metallographic structure. The split operation realizes the simultaneous working process and improves the grinding speed; Reversing mechanism 3: It includes a reversing shaft 31 and a support base 35. The reversing shaft 31 is rotatably connected to the middle position of the box body 1. Being arranged in the middle of the box body 1 can make the support more stable, occupy less extra area during the process of driving the upper component to rotate, and provide a connection in the middle, making the installation distance between the two side components at the upper end closer. The reversing shaft 31 extends out of the upper surface of the box body 1 and is fixedly connected to a connection seat 32. The connection seat 32 is a strip-shaped structure with a square cross-section, and it is fixed to the outer surface of the reversing shaft 31. Two connection chutes 33 are symmetrically arranged on the front and rear sides of the connection seat 32 respectively for connection and guiding use. The two ends of the support base 35 are fixedly connected to the corresponding box body 1 below the bottom plate 2, which is used to provide connection and support. During subsequent maintenance, it can be removed to take out the reversing motor 34 of the lower component, and at the same time support the lower parts of the two side bottom plates 2 to improve the firmness. A reversing motor 34 is fixedly connected to the middle position of the support base 35, and the upper end of the reversing motor 34 is fixedly connected to the lower end of the reversing shaft 31; during use, the angle of a single rotation of the reversing motor 34 is set to 90 degrees, that is, the reversing shaft 31 is driven to rotate 90 degrees, so that the connection chute 33 also rotates 90 degrees in a single direction. If a 180-degree rotation is required during continuous grinding without a lower specimen, it is achieved by continuously rotating two 90-degree rotations. In actual use, a deceleration servo motor is preferably used, or a deceleration structure is used for connection to improve the stability during the steering process. Since the reversing shaft 31 is rotatably connected to the middle of the box body 1, the reversing motor 34 does not bear the pressure from the upper end and only provides drive for the rotation direction.

[0022] The upper grinding mechanism 4 includes a connecting bracket 41, one end of which is bent downward to form an installation position, which is helpful for stability after installation. Two connecting brackets 41 are provided, and two groups of structures can be symmetrically installed to realize the connection basis of fine grinding and rough grinding. The connecting brackets 41 are symmetrically arranged on both sides of the connecting seat 32 where the connecting grooves 33 are not provided. The ends of the connecting brackets 41 are slidably connected to the corresponding sides of the connecting grooves 33, and the ends of the connecting brackets 41 are connected to the connecting seat 32 by connecting to the connecting grooves 33 on both sides. The upper ends of the connecting brackets 41 are fixedly connected with suspension blocks 42 with an arc-shaped appearance and a T-shaped cross-section, and the suspension blocks 42 can realize the connection during the circular rotation process. The ends of the connecting brackets 41 away from the reversing mechanism 3 are fixedly connected with drive motors 43, and the drive motors 43 are arranged at the downward bent installation position of the connecting brackets 41. The lower end of the motor 43 is fixedly connected to the grinding frame 44, wherein the grinding frame 44 is relatively light in weight, and a load-bearing turntable bearing or other structure can also be installed at the connection between the two to improve the load-bearing capacity. Pressure-adjusting rods 45 are respectively arranged on both sides of the middle position of the grinding frame 44, and the pressure-adjusting rod 45 can be moved up and down by the nut arranged thereon, so as to drive the pressure plate 46 to rise and fall to increase the force applied to the top of the sample, and the lower end of the pressure-adjusting rod 45 is fixedly connected to the pressure plate 46, and a spring 47 is movably sleeved on the pressure-adjusting rod 45 between the pressure plate 46 and the grinding frame 44, wherein the setting of the pressure plate 46 is used to adapt the components in the connecting mechanism 8, so as to support the top of the clamped sample and maintain the stability after installation, and by adjusting the nut on the pressure-adjusting rod 45, the spring 47 can be compressed to increase its elastic resistance and form internal stress, which is helpful to improve the stability and connection firmness of the sample during clamping; The pressing mechanism 5 includes a limiting sleeve 51, which is symmetrically fixedly connected to both sides of the box body 1. One end of the pressure regulating arm 52 is slidably connected in the limiting sleeve 51. The pressure regulating arm 52 can be lifted and lowered in a directional manner under the limitation of the two limiting sleeves 51. The upper ends of the pressure regulating arms 52 are bent toward the middle position of the upper end of the box body 1, and after bending, they are close to the middle to facilitate the installation of a set of components on both sides. The upper ends of the pressure regulating arms 52 are respectively fixedly connected with semi-circular guide seats 53. When the two semi-rings reach the same height, a The middle positions of the lower surfaces of the circular ring and the guide seat 53 are respectively provided with T-shaped grooves 54, and the annular T-shaped grooves 54 on both sides are interconnected to form a through circular channel, and the suspension blocks 42 are respectively slidably connected with the T-shaped grooves 54 on the guide seat 53, so that the suspension blocks 42 on both sides can move smoothly therein, and when the reversing shaft 31 drives the connecting seat 32 to rotate, the upper end of the connecting bracket 41 can be stably connected to achieve smooth rotation, wherein the up and down movement process of the pressure regulating arm 52 is controlled by the adjusting mechanism 6; Adjusting mechanism 6: It includes a servo motor 61, a mounting block 63, a driving gear 66 and a tooth groove 67. The servo motors 61 are symmetrically and fixedly connected to the box body 1 on both sides of each limiting sleeve 51 respectively, that is, each pressure regulating arm 52 is driven by two servo motors 61. This can be achieved by using the same driver during use. Moreover, the form of bilateral drive makes the lifting process more stable and can bear greater force. A driving gear 62 is fixedly connected to the end of the servo motor 61. The mounting block 63 is fixedly connected to the box body 1 above the servo motor 61. A regulating shaft 64 is rotatably connected to the mounting block 63. At the end of the output shaft, transmission gears 65 are fixedly connected to both ends of each regulating shaft 64 respectively. The driving gear 62 is used to drive the transmission gear 65 at the end of the mounting block 63 to rotate. And the diameter of the driving gear 62 is smaller among the two, which is used to increase the torque, making it more stable to drive a larger load. Driving gears 66 are fixedly connected to the middle parts of each regulating shaft 64 respectively. When tooth grooves 67 are equidistantly formed on the surface of the vertical part of the pressure regulating arm 52 away from the box body 1, the driving gear 66 is meshed with the tooth groove 67. The driving of the tooth groove 67 is realized through the driving gear 66, and then the lifting of the pressure regulating arm 52 is realized. The lifting of the pressure regulating arm 52 can adjust the position of the upper grinding mechanism 4 in the vertical direction, and then realize the change of pressure and the retraction after grinding; A grinding turntable 74 is arranged at the upper end of the lower grinding mechanism 7. The upper end of the grinding turntable 74 can contact the lower end of the workpiece above, and then the grinding process is completed; The connecting mechanism 8 includes a limiting frame 81 and a pressing air cushion 86. The setting of the limiting frame 81 can connect more white copper sample specimens. On the upper surfaces of the middle positions on both sides of the limiting frame 81, matching seats 82 are respectively fixedly connected. The matching seats 82 are connected with the connecting grinding frame 44 through connecting pins 83 and are set as a detachable structure, which is convenient for overall taking, placing and replacement. Threaded holes 84 are equidistantly and throughly formed around the limiting frame 81. Positioning screws 85 are threadedly connected in the threaded holes 84. In the existing white copper sample specimens, the shapes are mostly rectangular or cylindrical. Therefore, when the positioning screws 85 are rotated, several specimens arranged in the limiting frame 81 can be connected, and they are firmly connected after being squeezed against each other. The end of the positioning screw 85 can be appropriately increased with a flat or arc-shaped cushion structure to improve the stable connection of the arc surface. The pressing air cushion 86 is fixedly connected to the lower end of the pressing plate 46. The arranged pressing air cushion 86 can cover the tops of existing specimens with different heights. Through the adjustment at the pressure regulating rod 45, the pressure can also be transmitted to the top of the pressing air cushion 86 to realize uniform contact with the tops of the specimens and support during the grinding process; The positioning mechanism 9 includes a vertical block 91, a transmitting probe A 92, a mating probe A 93, a mating probe B 94, and a transmitting probe B 95. The vertical block 91 is symmetrically and fixedly connected to the upper surface of the middle position of each guiding seat 53. Among them, the height of the vertical block 91 is higher than the upper surface of the guiding seat 53, facilitating the installation of the transmitting probe A 92, and it is located on the outside for subsequent maintenance. The transmitting probe A 92 is respectively fixedly connected to the surface of the upper end of the vertical block 91 facing one side of the reversing shaft 31. The mating probe A 93 is respectively fixedly connected to the surfaces on both sides of the reversing shaft 31. The mating probe B 94 is respectively fixedly connected to the surfaces on both sides near the upper end of the connecting seat 32. The transmitting probe B 95 is respectively fixedly connected to the surfaces of the guiding seat 53 facing one side of the connecting seat 32. Among them, the mating probe A 93 corresponds to the transmitting probe A 92, and both output electrical signals when reaching the same height. The provided mating probe B 94 and the transmitting probe B 95 cooperate with each other, and then output electrical signals when reaching the same height. By adopting two groups of probes with opposite transmitting directions for installation, the pressure regulating arm 52 stops when reaching the highest point, and the docking position is more accurate. At this time, the T-shaped grooves 54 on both sides are at the same horizontal plane, forming an annular channel, thus facilitating adjustment at this place; The control module 18 uses a programmable smt single-chip microcomputer as the core component, and sets different grinding times, rotation speeds, and injection amounts of water and abrasive according to requirements.

[0023] Furthermore, during the reversing process, it is all carried out when the pressure regulating arm 52 reaches its set highest position. In this way, it is not easy to collide, and it is convenient for personnel to observe the grinding effect, and it is more convenient for taking and placing, with a larger operating space. When the number of samples on one side can be placed completely during use, continuous grinding can be carried out, that is: after the grinding on one side is completed, it turns, and then fine grinding is carried out; When both sides are filled with cupronickel specimens, rough grinding on one side is carried out first. After its rough grinding is completed, then it reverses to carry out fine grinding, while rough grinding is carried out on the other side at the same time. When the fine grinding reaches the set accuracy, the pressure regulating arm 52 on this side can be raised, and then the connecting mechanism 8 on this side can be removed. When the rough grinding on the other side reaches the set accuracy, it reverses to the fine grinding side to carry out grinding, and the process is automated.

[0024] Further, the lower grinding mechanism 7 further includes a mounting cover A71, a connecting frame 72, a grinding motor 73, a grinding turntable 74, a support arm 75, a guide ring 76, and a pressure sensor 77. The mounting cover A71 is fixedly connected to the left and right spaces of the box body 1 respectively. There is a gap between its edge and the box body 1 to facilitate the flow of liquid. The lower end of the mounting cover A71 is open. The connecting frame 72 is fixedly connected to the inner wall of the mounting cover A71 near the lower end. The setting of the mounting cover A71 can provide an installation space with a closed upper end and an open lower end, preventing the liquid flowing down from the upper end from soaking the grinding motor 73, providing protection for it, and guiding the liquid at the same time. The grinding motor 73 is fixedly connected to the connecting frame 72. The support arms 75 are fixedly connected to the outer surface of the mounting cover A71 near the upper end in a circular array. The upper end of the support arm 75 is higher than the mounting cover A71, and the top needs to be kept horizontal and firmly supported. The lower ends of the guide rings 76 are respectively fixedly connected to the upper ends of the support arms 75. The guide rings 76 are equipped with annular slide rails and other support structures for stable operation, and specifically, roller bearings or turntable bearings and other component structures for stable force and support can be set. The grinding turntable 74 is rotatably connected to the upper end of the guide ring 76, and a pressure sensor 77 is also arranged between the two. To obtain the downward pressure value from the upper end, so that the control module 18 can make dynamic adjustments according to the pressure value to meet the grinding requirements of samples with harder properties under some component ratios. The end of the output shaft of the grinding motor 73 between the grinding turntable 74 and the guide ring 76 is fixedly connected to the middle of the grinding turntable 74. The grinding turntable 74 is respectively in cooperation with the lower end of the limit frame 81. When the grinding motor 73 moves, it can drive the upper grinding turntable 74 to rotate. The upper end of the grinding turntable 74 selects an integral grinding disc material or a grinding structure with replaceable grinding sheets, and relatively wear-resistant grinding materials can be selected for adaptation in this type to meet the grinding requirements under large batch working conditions.

[0025] Please refer to Figure 2 and Figure 3 As another specific implementation provided by the application, when the pressure regulating arm 52 rises to the highest position, the emission probes A92 and the mating probes A93 on both sides correspond to each other respectively, and when the pressure regulating arm 52 rises to the highest position, the mating probes B94 and the emission probes B95 on both sides are at the same horizontal height.

[0026] Specifically, the set probes adopt infrared laser positioning instruments and are paired with each other. The purpose of setting two sets is to improve safety protection and reduce the inaccurate positioning phenomenon caused by a certain fault. The position accuracy obtained by mutual cooperation is higher, so that the hanging block 42 at the upper end of the connecting bracket 41 will not be stuck when the connecting seat 32 rotates and can smoothly pass through the gap between the two T-shaped grooves 54.

[0027] Please refer to Figure 6, it further includes a metering pump 10. The metering pump 10 preferably selects a pump body model that can transport a certain concentration, aiming to better transport some abrasive slurries containing abrasive particles. The metering pumps 10 are respectively arranged at the lower positions on the outer sides of the four corners of the box body 1. The output ends of the metering pumps 10 are connected to the conduits 11. The output ends of the metering pumps 10 are respectively connected to containers of different liquids or abrasive pastes. The conduits 11 are respectively fixedly connected to the inner walls of the four corners of the box body 1, just being adapted by the four corners of the box body 1 without occupying extra space. The upper ends of the conduits 11 are respectively fixedly connected with spray heads 13, and the outlets of the spray heads 13 are respectively directed towards the grinding turntable 74. When in use, a certain amount of liquid and grinding aids are sprayed, making the grinding surface smoother and the grinding effect better.

[0028] Please refer to Figure 2 , as another specific implementation provided by the application, it further includes a sewage pipe 14. The sewage pipes 14 are respectively arranged at one side of the lower ends of the two spaces of the box body 1.

[0029] Specifically, the sewage pipes 14 are respectively arranged in the two spaces of the box body 1 to respectively discharge the liquids of different grinding aids, making the subsequent sewage treatment more convenient.

[0030] Please refer to Figure 2 , as another specific implementation provided by the application, it further includes a protective shell 15. The protective shells 15 are respectively fixedly connected to the corresponding surfaces of the box body 1 at the adjusting mechanism 6.

[0031] Specifically, the setting of the protective shell 15 can enclose the adjusting mechanism 6. On the one hand, it can prevent the moving gear assembly from causing harm to personnel, and on the other hand, it can improve the aesthetic degree.

[0032] Please refer to Figure 3 and Figure 8 , as another specific implementation provided by the application, it further includes an installation cover B16. The installation cover B16 is fixedly connected to the corresponding bottom plate 2 at the lower end of the reversing shaft 31, and the reversing motor 34 is arranged in the installation cover B16.

[0033] Specifically, the setting of the installation cover B16 can protect the upper end of the reversing motor 34 from being soaked by liquid, with an opening at the lower end.

[0034] Please refer to Figure 5 and Figure 6, as another specific implementation provided by the application, it further includes guide bars 12 and guide grooves 19. The guide bars 12 are symmetrically and fixedly connected to the surfaces at the middle positions on both sides of the box body 1, and are used to limit the sliding direction of the pressure regulating arm 52. The guide grooves 19 are respectively opened on the surfaces of the vertical parts of the pressure regulating arm 52 close to the side of the box body 1. The guide bars 12 are respectively slidably connected to the corresponding guide grooves 19. The guide bars 12 and the guide grooves 19 cooperate with each other. In addition, the provided limit sleeves 51 can greatly improve the stability of the vertical movement trajectory of the pressure regulating arm 52, and thus obtain a more stable adjustment effect. In actual use, rollers or lubricating oil can be provided at the joint surface between the two to reduce the frictional resistance.

[0035] Please refer to Figure 2 , as another specific implementation provided by the application, it further includes guide sleeves 17. The guide sleeves 17 are U-shaped in appearance. The guide sleeves 17 are respectively symmetrically and fixedly connected to the upper ends of the middle positions on both sides of the box body 1. The pressure regulating arm 52 is slidably connected to the middle part of the guide sleeves 17.

[0036] Specifically, the setting of the guide sleeves 17 can support the running stability of the pressure regulating arm 52, and further ensure that there is no shaking phenomenon during the lifting process. Similarly, lubricating grease or guide structures such as rollers can be applied at the connection part to improve the smoothness.

[0037] Overall, this structure solves the problem of the slow existing grinding speed, reduces the time and labor intensity consumed by the experimenters for grinding, facilitates the personnel to concentrate on the subsequent reports and analyses, and at the same time reduces the cost of purchasing equipment in the laboratory, meets the requirements of cupronickel grinding, and speeds up the work process.

[0038] The embodiments of this specific implementation are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. An automatic grinding device for specimens in the metallographic inspection of cupronickel, characterized in that, Including: A box body (1), a bottom plate (2), a commutation mechanism (3), an upper grinding mechanism (4), a lower pressing mechanism (5), an adjusting mechanism (6), a lower grinding mechanism (7), a connecting mechanism (8), a positioning mechanism (9) and a control module (18); The box body (1): The appearance of the box body (1) is rectangular. The bottom plate (2) is arranged on the inner wall of the box body (1) near the lower end. The middle part of the box body (1) is set as two spaces on the left and right, and the upper end is open. A lower grinding mechanism (7) is respectively connected in the two spaces on the left and right of the box body (1). A control module (18) is arranged on one side of the box body (1); The commutation mechanism (3): Comprising a commutation shaft (31) and a support base (35), the commutation shaft (31) is rotatably connected to the middle position of the box body (1). The outer surface of the commutation shaft (31) extending above the box body (1) is fixedly connected with a connecting seat (32). Two connecting chutes (33) are symmetrically arranged on the front and rear sides of the connecting seat (32) respectively. The two ends of the support base (35) are fixedly connected to the corresponding box body (1) below the bottom plate (2). A commutation motor (34) is fixedly connected to the middle position of the support base (35). The upper end of the commutation motor (34) is fixedly connected to the lower end of the commutation shaft (31); The upper grinding mechanism (4): Comprising two connecting brackets (41), the two connecting brackets (41) are symmetrically arranged on the two sides of the connecting seat (32) where no connecting chute (33) is opened. The end parts of the connecting brackets (41) are respectively slidably connected to the corresponding sides of the connecting chutes (33). Suspension blocks (42) with an arc-shaped appearance and a T-shaped cross-section are respectively fixedly connected to the upper ends of the connecting brackets (41). Driving motors (43) are respectively fixedly connected to the ends of the connecting brackets (41) far away from the commutation mechanism (3). A grinding frame (44) is fixedly connected to the lower end of the driving motor (43). Pressure regulating rods (45) are respectively arranged on both sides of the middle position of the grinding frame (44). A pressing plate (46) is fixedly connected to the lower end of the pressure regulating rod (45). A spring (47) is movably sleeved on the pressure regulating rod (45) between the pressing plate (46) and the grinding frame (44); The lower pressing mechanism (5): Comprising limit sleeves (51), the limit sleeves (51) are symmetrically and fixedly connected to both sides of the box body (1). One ends of pressure regulating arms (52) are respectively slidably connected in the limit sleeves (51). The upper ends of the pressure regulating arms (52) are respectively bent towards the middle position of the upper end of the box body (1). Semi-circular guide seats (53) are respectively fixedly connected to the upper ends of the pressure regulating arms (52). T-shaped grooves (54) are respectively opened at the middle positions of the lower surfaces of the guide seats (53). The suspension blocks (42) are respectively slidably connected to the T-shaped grooves (54) on the guide seats (53); The adjusting mechanism (6): It includes a servo motor (61), a mounting block (63), a driving gear (66) and a tooth groove (67). The servo motor (61) is symmetrically and fixedly connected to the box body (1) on both sides of each limiting sleeve (51). The end of the servo motor (61) is fixedly connected with a driving gear (62). The mounting block (63) is fixedly connected to the box body (1) above the servo motor (61). A regulating shaft (64) is rotatably connected to the mounting block (63). Transmission gears (65) are fixedly connected to both ends of each regulating shaft (64) respectively. Driving gears (66) are fixedly connected to the middle parts of each regulating shaft (64) respectively. The tooth grooves (67) are respectively and equidistantly formed on the surface of the vertical part of the pressure regulating arm (52) away from the box body (1). The driving gear (66) is meshed with the tooth groove (67). A grinding turntable (74) is arranged at the upper end of the lower grinding mechanism (7). The connecting mechanism (8) includes a limiting frame (81) and a pressing air cushion (86). At the upper surfaces of the middle positions on both sides of the limiting frame (81), fitting seats (82) are respectively fixedly connected. The fitting seats (82) are in fitting connection with the connecting grinding frame (44). A connecting pin (83) is arranged between the fitting seat (82) and the connecting grinding frame (44). Threaded holes (84) are equidistantly and penetratingly formed around the limiting frame (81). Positioning screws (85) are threadedly connected in the threaded holes (84). The pressing air cushion (86) is fixedly connected to the lower end of the pressing plate (46). The positioning mechanism (9) includes vertical blocks (91), transmitting probe A (92), fitting probe A (93), fitting probe B (94) and transmitting probe B (95). The vertical blocks (91) are symmetrically and fixedly connected to the upper surfaces of the middle positions of each guiding seat (53). The transmitting probe A (92) is respectively fixedly connected to the surfaces of the upper ends of the vertical blocks (91) facing the reversing shaft (31). The fitting probe A (93) is respectively fixedly connected to the surfaces of both sides of the reversing shaft (31). The fitting probe B (94) is respectively fixedly connected to the surfaces of both sides near the upper ends of the connecting seats (32). The transmitting probe B (95) is respectively fixedly connected to the surfaces of each guiding seat (53) facing the connecting seat (32).

2. The automatic grinding device for the specimen of cupronickel metallographic detection according to claim 1, wherein: The lower grinding mechanism (7) further includes a mounting cover A (71), a connecting frame (72), a grinding motor (73), a grinding turntable (74), a support arm (75), a guide ring (76) and a pressure sensor (77). The mounting cover A (71) is fixedly connected to the left and right spaces of the box body (1) respectively. The lower end of the mounting cover A (71) is open. The connecting frame (72) is fixedly connected to the inner wall of the mounting cover A (71) near the lower end. The grinding motor (73) is fixedly connected to the connecting frame (72). The support arms (75) are fixedly connected to the outer surface of the mounting cover A (71) near the upper end in a circular array. The lower ends of the guide rings (76) are fixedly connected to the upper ends of the support arms (75) respectively. The grinding turntable (74) is rotatably connected to the upper end of the guide ring (76). The end of the output shaft of the grinding motor (73) is fixedly connected to the middle of the grinding turntable (74). The grinding turntable (74) is respectively in mating connection with the lower end of the limit frame (81).

3. The automatic grinding device for the specimen of cupronickel metallographic inspection according to claim 1, characterized in that: When the pressure regulating arm (52) rises to the highest position, the emission probe A (92) and the mating probe A (93) on both sides correspond to each other respectively, and when the pressure regulating arm (52) rises to the highest position, the mating probe B (94) and the emission probe B (95) on both sides are at the same horizontal height.

4. The automatic grinding device for the specimen of cupronickel metallographic inspection according to claim 1, characterized in that: It further includes a metering pump (10). The metering pumps (10) are respectively arranged at the lower positions on the outer sides of the four corners of the box body (1). The output ends of the metering pumps (10) are connected to conduits (11). The conduits (11) are respectively fixedly connected to the inner walls of the four corners of the box body (1). The upper ends of the conduits (11) are respectively fixedly connected with spray nozzles (13). The outlets of the spray nozzles (13) are respectively directed towards the grinding turntable (74).

5. The automatic grinding device for the specimen of cupronickel metallographic inspection according to claim 1, wherein: It further includes a sewage pipe (14). The sewage pipes (14) are respectively arranged on one side of the lower ends of the two spaces of the box body (1).

6. The automatic grinding device for specimens in the white copper metallographic inspection according to claim 1, characterized in that: It further includes a protective shell (15). The protective shells (15) are respectively fixedly connected to the surfaces of the box body (1) corresponding to the adjusting mechanism (6).

7. An automatic grinding device for specimens of cupronickel metallographic inspection according to claim 1, characterized in that: It further includes a mounting cover B (16). The mounting cover B (16) is fixedly connected to the bottom plate (2) corresponding to the lower end of the reversing shaft (31). The reversing motor (34) is arranged in the mounting cover B (16).

8. The automatic grinding device for the specimen of cupronickel metallographic inspection according to claim 1, wherein: It further includes guide strips (12) and guide grooves (19). The guide strips (12) are symmetrically fixedly connected to the surfaces of the middle positions on both sides of the box body (1). The guide grooves (19) are respectively formed on the surfaces of the vertical parts of the pressure regulating arm (52) close to one side of the box body (1). The guide strips (12) are respectively in sliding connection with the corresponding guide grooves (19).

9. The automatic grinding device for the specimen of cupronickel metallographic inspection according to claim 1, wherein: It further includes guide sleeves (17). The outer appearance of the guide sleeves (17) is U-shaped. The guide sleeves (17) are respectively symmetrically fixedly connected to the upper ends of the middle positions on both sides of the box body (1). The pressure regulating arm (52) is in sliding connection with the middle parts of the guide sleeves (17).

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