Valve flange grinding device for valve machining

Abstract

The invention discloses a valve flange grinding device for valve machining, and relates to the technical field of flange grinding devices.The valve flange grinding device comprises a working box, an operation table plate is rotatably mounted at the top of the working box, and a second machining frame is fixedly mounted on the rear side of the working box; a first machining frame and a third machining frame are symmetrically and fixedly mounted on the left side and the right side of the working box, and transmission shafts are rotationally mounted on the tops of the first machining frame, the second machining frame and the third machining frame. By arranging the working box, the operation table plate, the second machining frame, the first machining frame, the third machining frame, a transmission shaft, a downward pressing ring, a driven connecting column, a grinding end longitudinal downward pressing driving assembly, a multi-hole grinding linkage mechanism, a double-end synchronous driving mechanism, a valve workpiece clamping mechanism and a multi-station switching mechanism; the problems that existing grinding equipment is single in function, tedious in procedure connection, low in grinding precision and unstable in workpiece clamping are solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of flange polishing devices, in particular to a valve flange polishing device for valve machining. BACKGROUND

[0002] In the valve production and machining process, the end face flatness and the inner wall smoothness of the connecting hole of the valve flange, as a core component for connecting the valve and the pipeline, directly affect the sealing performance and assembly accuracy of the valve. At present, the polishing machining link of the valve flange still has many technical pain points: the traditional machining mode mainly relies on manual operation of a handheld polishing tool, which is not only labor-intensive and low in polishing efficiency, but also prone to unstable polishing quality due to human operation errors, resulting in problems such as burr residues on the flange end face and insufficient size accuracy of the connecting hole, which seriously affect the subsequent assembly effect and product qualification rate; although the existing automatic polishing equipment has replaced manual operation to a certain extent, most of the equipment has the defect of single function, and can only realize single-process polishing of the flange end face or the connecting hole, so that the complete polishing of the flange needs to be completed by replacing the polishing head or transferring the workpiece multiple times, and the process connection is complicated, which greatly reduces the production efficiency; in addition, some equipment lacks stable synchronous driving mechanisms and work station conversion structures, and is prone to transmission shaking and work station deviation during the polishing process, which further affects the polishing accuracy; and the workpiece clamping link is also prone to workpiece displacement during the polishing process due to unstable clamping or low clamping efficiency, and even causes workpiece damage. SUMMARY

[0003] To solve the problems in the background art, the application aims to provide a valve flange polishing device for valve machining, which has the advantages of multi-process synchronous polishing, work station conversion and stable workpiece clamping, and solves the problems of single function, complicated process connection, low polishing accuracy and unstable workpiece clamping of the existing polishing equipment.

[0004] To achieve the above-mentioned purpose, the application provides the following technical scheme: a valve flange polishing device for valve machining, comprising a working box, an operating table plate is rotatably installed on the top of the working box, a second machining rack is fixedly installed on the rear side of the working box, a first machining rack and a third machining rack are symmetrically fixedly installed on the left and right sides of the working box, a transmission shaft is rotatably installed on the top of each of the first machining rack, the second machining rack and the third machining rack, a lower pressing ring is longitudinally movably installed on the side of each of the first machining rack, the second machining rack and the third machining rack close to the working box, a driven connecting column for connecting a polishing end is rotatably installed in the lower pressing ring, and a polishing end longitudinal pressing driving assembly is arranged on one side of the first machining rack, the second machining rack and the third machining rack and used for driving the polishing end to longitudinally move. A multi-hole polishing linkage mechanism is arranged on the first machining rack and used for synchronously polishing multiple valve flange connecting holes. A dual-end synchronous drive mechanism is disposed between the first processing frame and the second processing frame, and is used to synchronously drive the transmission shafts on the first processing frame and the second processing frame. The valve workpiece clamping mechanism is located at the four corners of the top of the operating platform and is used to quickly clamp the valve workpiece. The multi-station conversion mechanism is located inside the work box and is used to drive the operating table to rotate and convert the top grinding station.

[0005] As a preferred embodiment of the present invention, the longitudinal downward pressing drive assembly of the grinding end includes a downward pressing electric cylinder. The downward pressing electric cylinder is provided in three sets and is fixedly installed on one side of the first processing frame, the second processing frame and the third processing frame respectively. The push frame located on the top of the downward pressing ring is slidably installed inside the first processing frame, the second processing frame and the third processing frame. One side of the push frame is fixedly connected to the output end of the downward pressing electric cylinder.

[0006] In a preferred embodiment of the present invention, the multi-hole grinding linkage mechanism includes a transmission gear plate, a driven gear, a grinding shaft, a first limiting ring, and a second limiting ring. The bottom of the driven connecting column passes through the lower pressure ring and is fixedly connected to the top of the transmission gear plate. The grinding shaft is provided with six sets, which are rotatably installed in a ring at equal intervals around the top of the lower pressure ring. The driven gear is fixedly installed on the surface of the grinding shaft and located at the bottom of the lower pressure ring, and meshes with the transmission gear plate. The driven connecting column and the transmission shaft are longitudinally slidably connected via a keyway. The second limiting ring is fixedly connected to the surface of the driven connecting column and located at the top of the lower pressure ring. The second limiting ring is used to limit the longitudinal rotation of the driven connecting column to prevent the driven connecting column from separating from the lower pressure ring during rotation.

[0007] As a preferred embodiment of the present invention, the dual-end synchronous drive mechanism includes a synchronous motor, a first synchronous pulley, a transmission belt, and a second synchronous pulley. The synchronous motor is fixedly connected to the top of the second processing frame, and its output end is fixedly connected to the transmission shaft on the top of the second processing frame. The first synchronous pulley is fixedly installed on the top of the transmission shaft surface on the first processing frame, and the second synchronous pulley is fixedly installed on the top of the transmission shaft surface on the second processing frame. The transmission belt is sleeved on the first and second synchronous pulleys, and the first synchronous pulley is connected to the second synchronous pulley via the transmission belt. A grinding disc is fixed to the bottom of the driven connecting column on the second processing frame through a pressure ring. The grinding disc is used to grind the top surface of the valve flange.

[0008] As a preferred embodiment of the present invention, the valve workpiece clamping mechanism includes a fixed clamping block, a movable clamping block, a clamping cylinder, and a limiting rail. The limiting rail is fixedly installed at the four corners of the top of the operating platform. The fixed clamping block is fixedly connected to one side of the limiting rail. The movable clamping block is slidably installed on the limiting rail and cooperates with the fixed clamping block. The clamping cylinder is fixedly installed on the top of the limiting rail and its output end is fixedly connected to the movable clamping block.

[0009] In a preferred embodiment of the present invention, the multi-station conversion mechanism includes a stepper motor, a drive gear, a support frame, and a gear ring. The support frame is fixedly connected to the top of one side of the inner wall of the work box. The stepper motor is fixedly installed at the bottom of the support frame, and its output end passes through the support frame and is fixedly connected to the drive gear. The gear ring is rotatably installed at the top of the inner wall of the work box and meshes with the drive gear. The top of the work box has a rotating groove for rotating and supporting the gear ring. The top of the gear ring is fixedly connected to the bottom of the operating platform.

[0010] As a preferred embodiment of the present invention, the top of the first processing frame, the second processing frame, and the third processing frame near the operating table is fixedly connected to a stabilizing frame for limiting the rotation of the drive shaft. The bottom of the first processing frame, the second processing frame, and the third processing frame are all fixedly connected to a reinforcing rib. The side of the reinforcing rib near the work box is fixedly connected to the work box. The top of the third processing frame is fixedly connected to a servo motor, and the output end of the servo motor is fixedly connected to the drive shaft on the third processing frame.

[0011] As a preferred embodiment of the present invention, a slide bar is fixedly connected to the side of the movable clamping block near the limiting rail, and a sliding groove is provided inside the limiting rail to slide with the slide bar.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention, by setting up a work box, operating table, second processing frame, first processing frame, third processing frame, transmission shaft, pressure ring, driven connecting column, longitudinal downward pressure drive assembly for grinding end, multi-hole grinding linkage mechanism, double-end synchronous drive mechanism, valve workpiece clamping mechanism, and multi-station conversion mechanism, achieves the effects of multi-process synchronous grinding, station conversion, and stable workpiece clamping, solving the problems of single function, cumbersome process connection, low grinding accuracy, and unstable workpiece clamping in existing grinding equipment.

[0013] 2. By setting a longitudinal pressing drive component for the grinding end, the present invention can drive the grinding end on the second processing frame, the first processing frame, and the third processing frame to move longitudinally, so as to achieve precise contact between the grinding end and the workpiece. At the same time, it works with each grinding mechanism to complete the pressing grinding action, ensuring the stability of the grinding process and the controllability of the grinding depth.

[0014] 3. By setting up a multi-hole grinding linkage mechanism, the present invention achieves synchronous rotation of multiple grinding shafts driven by a single power source through the meshing transmission of a transmission gear disc and multiple sets of driven gears. This allows for the simultaneous grinding of multiple connection holes on a flange in one go, significantly improving the efficiency and consistency of connection hole grinding. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a bottom-view perspective view of the first processing frame of the present invention. Figure 3 For the present invention Figure 1 A schematic diagram of a half-section three-dimensional structure; Figure 4 This is an exploded three-dimensional structural diagram of the first processing frame of the present invention; Figure 5 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 6 For the present invention Figure 4 Enlarged diagram of point B in the middle.

[0016] In the diagram: 1. Work box; 2. Operating platform; 3. First processing rack; 31. Second processing rack; 32. Third processing rack; 4. Downward pressing electric cylinder; 41. Pushing frame; 42. Downward pressing ring; 43. Driven connecting column; 44. Transmission shaft; 45. Transmission gear plate; 46. Driven gear; 47. Grinding shaft; 48. Limiting ring one; 49. Limiting ring two; 401. Stabilizing frame; 402. Reinforcing rib; 5. First synchronous pulley; 51. Transmission belt; 52. Second synchronous pulley; 6. Fixed clamping block; 61. Movable clamping block; 62. Clamping cylinder; 63. Limiting rail; 64. Slide bar; 7. Servo motor; 71. Synchronous motor; 8. Stepper motor; 81. Drive gear; 82. Support frame; 83. Gear ring. Detailed Implementation

[0017] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0019] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0020] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth. Example

[0021] Reference Figures 1-6 The first embodiment of the present invention adopts the following technical solution, including a work box 1, an operating table 2 rotatably mounted on the top of the work box 1, a second processing frame 31 fixedly mounted on the rear side of the work box 1, a first processing frame 3 and a third processing frame 32 symmetrically fixedly mounted on the left and right sides of the work box 1, a drive shaft 44 rotatably mounted on the top of each of the first processing frame 3, the second processing frame 31 and the third processing frame 32, and a lower pressure ring 42 longitudinally movable on the side of each of the first processing frame 3, the second processing frame 31 and the third processing frame 32 near the work box 1, and a grinding end rotatably mounted inside each of the lower pressure rings 42. The driven connecting column 43 also includes a grinding end longitudinal pressing drive assembly, which is disposed on one side of the first processing frame 3, the second processing frame 31 and the third processing frame 32, and is used to drive the grinding end to move longitudinally. The grinding end longitudinal pressing drive assembly includes a pressing electric cylinder 4, which is provided in three sets and is fixedly installed on one side of the first processing frame 3, the second processing frame 31 and the third processing frame 32 respectively. The push frame 41 located on the top of the pressing ring 42 is slidably installed inside the first processing frame 3, the second processing frame 31 and the third processing frame 32. One side of the push frame 41 is fixedly connected to the output end of the pressing electric cylinder 4.

[0022] A multi-hole grinding linkage mechanism is set on the first processing frame 3 and is used to grind multiple valve flange connection holes simultaneously; A dual-end synchronous drive mechanism is disposed between the first processing frame 3 and the second processing frame 31, and is used to synchronously drive the transmission shaft 44 on the first processing frame 3 and the second processing frame 31. The valve workpiece clamping mechanism is located at the four corners of the top of the operating platform 2 and is used to quickly clamp the valve workpiece. A multi-station conversion mechanism is installed inside the work box 1 and is used to drive the operating table 2 to rotate and convert the top grinding station.

[0023] Specifically, when it is necessary to lift the pressure ring 42, the pusher 41 can be moved downward by starting the pressure cylinder 4, which in turn moves the pressure ring 42 downward. During the downward movement of the pressure ring 42, the multi-hole grinding linkage mechanism can be used to press down synchronously to grind the holes and end face of the valve flange. Example

[0024] In the second embodiment of the present invention, the following technical solution is adopted: the multi-hole grinding linkage mechanism includes a transmission gear plate 45, a driven gear 46, a grinding shaft 47, a first limiting ring 48, and a second limiting ring 49. The bottom of the driven connecting column 43 passes through the lower pressure ring 42 and is fixedly connected to the top of the transmission gear plate 45. The grinding shaft 47 is provided with six sets, which are rotatably installed in a ring around the top of the lower pressure ring 42 at equal intervals. The driven gear 46 is fixedly installed on the surface of the grinding shaft 47 and located at the bottom of the lower pressure ring 42, and meshes with the transmission gear plate 45. The driven connecting column 43 and the transmission shaft 44 are longitudinally slidably connected by a keyway. The second limiting ring 49 is fixedly connected to the surface of the driven connecting column 43 and located at the top of the lower pressure ring 42. The second limiting ring 49 is used to limit the longitudinal rotation of the driven connecting column 43 to prevent it from rotating out of its original position. When the moving connecting column 43 and the lower pressure ring 42 rotate, they separate. The double-end synchronous drive mechanism includes a synchronous motor 71, a first synchronous pulley 5, a transmission belt 51, and a second synchronous pulley 52. ​​The synchronous motor 71 is fixedly connected to the top of the second processing frame 31, and its output end is fixedly connected to the transmission shaft 44 on the top of the second processing frame 31. The first synchronous pulley 5 is fixedly installed on the top of the surface of the transmission shaft 44 on the first processing frame 31, and the second synchronous pulley 52 is fixedly installed on the top of the surface of the transmission shaft 44 on the second processing frame 31. The transmission belt 51 is sleeved on the first synchronous pulley 5 and the second synchronous pulley 52. ​​The first synchronous pulley 5 is connected to the second synchronous pulley 52 through the transmission belt 51. The bottom of the driven connecting column 43 on the second processing frame 31 passes through the lower pressure ring 42 and is fixed with a grinding disc. The grinding disc is used to grind the top surface of the valve flange.

[0025] Specifically, when the drive shaft 44 rotates, it drives the driven connecting column 43 connected to it to rotate. As the driven connecting column 43 moves downward following the lower pressure ring 42, it maintains synchronous rotation with the drive shaft 44 through a slidable transmission connection. When the driven connecting column 43 rotates, it drives the bottom drive gear disc 45 to rotate, causing the drive gear disc 45 to drive the driven gear 46 meshing with it to rotate. The driven gear 46 drives the grinding shaft 47 fixed to it to rotate. Subsequently, the grinding shaft 47 grinds the holes on multiple flanges. After the synchronous motor 71 starts, it can... The drive shaft 44 on the top of the second processing frame 31 rotates, and then the drive shaft 44 on the second processing frame 31 drives the second synchronous pulley 52 to rotate. The rotation of the second synchronous pulley 52 drives the first synchronous pulley 5 to rotate through the transmission belt 51. Then, the first synchronous pulley 5 drives the drive shaft 44 on the first processing frame 3 fixed to it to rotate, thereby enabling multiple sets of multi-hole grinding linkage mechanisms on the first processing frame 3 to grind the holes on the flange in a coordinated manner. In addition, the drive shaft 44 on the second processing frame 31 can drive the grinding disc below it to grind the top of the flange. Example

[0026] The third embodiment of the present invention adopts the following technical solution: the valve workpiece clamping mechanism includes a fixed clamping block 6, a movable clamping block 61, a clamping cylinder 62, and a limiting rail 63. The limiting rail 63 is fixedly installed at the four corners of the top of the operating platform 2. The fixed clamping block 6 is fixedly connected to one side of the limiting rail 63. The movable clamping block 61 is slidably installed on the limiting rail 63 and cooperates with the fixed clamping block 6. The clamping cylinder 62 is fixedly installed on the top of the limiting rail 63, and its output end is fixedly connected to the movable clamping block 61. The multi-station conversion mechanism includes a stepper motor 8, a drive gear 81, a support frame 82, and a gear ring 83. The support frame 82 is fixedly connected to the top of one side of the inner wall of the work box 1. The stepper motor 8 is fixedly installed at the bottom of the support frame 82, and its output end passes through the support frame 82 and is fixedly connected to the drive gear 81. The gear ring 83 is rotatably installed on the top of the inner wall of the work box 1 and cooperates with the drive gear 81. The moving gears 81 mesh with each other. The top of the work box 1 is provided with a rotating groove to support the rotation of the gear ring 83. The top of the gear ring 83 is fixedly connected to the bottom of the operating table 2. The top of the first processing frame 3, the second processing frame 31 and the third processing frame 32 near the operating table 2 are all fixedly connected with a stabilizing frame 401 for limiting the rotation of the transmission shaft 44. The bottom of the first processing frame 3, the second processing frame 31 and the third processing frame 32 are all fixedly connected with a reinforcing rib 402. The side of the reinforcing rib 402 near the work box 1 is fixedly connected to the work box 1. The top of the third processing frame 32 is fixedly connected with a servo motor 7. The output end of the servo motor 7 is fixedly connected to the transmission shaft 44 on the third processing frame 32. The movable clamping block 61 is fixedly connected with a slide bar 64 near the limiting rail 63. The inside of the limiting rail 63 is provided with a sliding groove that slides with the slide bar 64.

[0027] Specifically, the fixed clamping block 6 on the limit rail 63 remains stationary, and the workpiece is placed between the fixed clamping block 6 and the movable clamping block 61. Then, the clamping cylinder 62 is activated, which moves the movable clamping block 61 closer to the fixed clamping block 6 to clamp and fix the workpiece. Afterward, the operating table 2 rotates to rotate the clamped workpiece to the corresponding grinding station for continuous grinding operations. This eliminates the need for a single grinding device to constantly switch grinding heads, which affects processing efficiency. The support frame 82 supports the stepper motor 8. After the input motor 8 is connected, it can drive the drive gear 81 to rotate through the output end. In turn, the drive gear 81 drives the meshing gear ring 83 to rotate, which in turn drives the operating table 2 to rotate. This changes the working position of the top of the operating table 2, allowing the workpiece to be processed three times in sequence from the first processing rack 3 to the second processing rack 31 and then to the third processing rack 32, without tool changes or waiting. The workpiece can be processed continuously. The stabilizing frame 401 can stabilize the rotation of the drive shaft 44 and prevent vibration during drive from affecting the grinding transmission efficiency. At the same time, the installation of the servo motor 7 can be customized for the third processing position. It can be adjusted according to the grinding process of the flange to determine whether it is working. The slide bar 64 can make the movable clamping block 61 more stable when it is driven to approach the fixed clamping block 6, preventing mechanical jamming and improving the stability of workpiece clamping.

[0028] First, place the valve flange workpiece to be ground on the valve workpiece clamping mechanism on the top of the operating table 2. Start the clamping cylinder 62, which drives the movable clamping block 61 to move closer to the fixed clamping block 6 along the limit rail 63. With the sliding cooperation between the slide bar 64 and the sliding groove inside the limit rail 63, the movable clamping block 61 moves smoothly, thereby quickly clamping and fixing the workpiece to ensure that the workpiece will not shift during the grinding process. After the workpiece is clamped, the multi-station conversion mechanism starts to work. Start the stepper motor 8 inside the work box 1. The stepper motor 8 drives the drive gear 81 to rotate through the output end. The drive gear 81 meshes with the gear ring 83 rotatably installed on the top of the inner wall of the work box 1, thereby driving the gear ring 83 to rotate. Since the top of the gear ring 83 is fixedly connected to the operating table 2, the operating table 2 is finally rotated, and the workpiece is converted to the corresponding grinding station. When the workpiece is transferred to the corresponding workstation of the first processing rack 3 and the second processing rack 31, the double-end synchronous drive mechanism is activated. The synchronous motor 71 fixed on the top of the second processing rack 31 drives the transmission shaft 44 on its top to rotate. The second synchronous wheel 52 on the transmission shaft 44 drives the first synchronous wheel 5 on the transmission shaft 44 of the first processing rack 3 to rotate synchronously through the transmission belt 51, thereby realizing the synchronous drive of the transmission shaft 44 on the first processing rack 3 and the second processing rack 31. At the same time, the longitudinal downward pressure drive assembly of the grinding end starts to operate. The three sets of downward pressure electric cylinders 4 respectively drive the push frame 41 on the first processing rack 3, the second processing rack 31 and the third processing rack 32 to move downward. The push frame 41 drives the downward pressure ring 42 to move downward longitudinally. The downward pressure ring 42 drives the internal driven connecting column 43 to move downward synchronously. Since the driven connecting column 43 and the transmission shaft 44 are longitudinally slidable through the keyway, the driven connecting column 43 can maintain synchronous rotation and move downward with the downward pressure ring 42 while the transmission shaft 44 rotates. For the first processing… The driven connecting column 43 of the first processing frame 3 rotates, driving the transmission gear 45 at the bottom to rotate. The transmission gear 45 meshes with the driven gears 46 on multiple grinding shafts 47, thereby driving the six grinding shafts 47 to rotate synchronously. This, combined with the pressing action, enables synchronous grinding of multiple connection holes on the flange. For the second processing frame 31, the grinding disc, which is fixed by the pressing ring 42 at the bottom of the driven connecting column 43, rotates with the driven connecting column 43. This, combined with the pressing action, enables grinding of the flange end face. When the workpiece is transferred to the corresponding station of the third processing frame 32, the servo motor 7 at the top can be activated according to the grinding process requirements to drive the transmission shaft 44 on the third processing frame 32 to rotate independently. This, combined with the corresponding pressing electric cylinder 4, drives the grinding end to move down, realizing a customized subsequent grinding process. Throughout the process, the stabilizing frame 401 acts as a rotation limiter for the transmission shaft 44, ensuring stable transmission. The reinforcing rib 402 enhances the structural strength of the first processing frame 3, the second processing frame 31, and the third processing frame 32, ensuring long-term stable operation of the device.

[0029] The electric cylinder, driven gear, clamping cylinder, servo motor, synchronous motor and stepper motor used in the technical means of this application can be additionally equipped with protective measures of common knowledge in the technical field under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, which are common technical means used by those skilled in the art.

[0030] It should be noted that the downward electric cylinder, driven gear, clamping cylinder, servo motor, synchronous motor and stepper motor are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method and other methods of the equipment, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0031] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0032] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0033] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A valve flange grinding device for valve processing, comprising a work box (1), an operating table (2) rotatably mounted on the top of the work box (1), a second processing frame (31) fixedly mounted on the rear side of the work box (1), a first processing frame (3) and a third processing frame (32) symmetrically fixedly mounted on the left and right sides of the work box (1), a drive shaft (44) rotatably mounted on the top of the first processing frame (3), the second processing frame (31) and the third processing frame (32), a lower pressure ring (42) longitudinally movablely mounted on the side of the first processing frame (3), the second processing frame (31) and the third processing frame (32) near the work box (1), and a driven connecting column (43) for connecting the grinding end rotatably mounted inside the lower pressure ring (42), characterized in that: It also includes a grinding end longitudinal downward pressure drive assembly, which is set on one side of the first processing frame (3), the second processing frame (31) and the third processing frame (32), and is used to drive the grinding end to move longitudinally; The multi-hole grinding linkage mechanism is set on the first processing frame (3) and is used to grind multiple valve flange connection holes simultaneously; A dual-end synchronous drive mechanism is set between the first processing frame (3) and the second processing frame (31), and is used to synchronously drive the transmission shaft (44) on the first processing frame (3) and the second processing frame (31); The valve workpiece clamping mechanism is set at the top four corners of the operating platform (2) and is used to quickly clamp the valve workpiece. The multi-station conversion mechanism is located inside the work box (1) and is used to drive the operating table (2) to rotate and convert the top grinding station.

2. The valve flange grinding device for valve processing according to claim 1, characterized in that: The longitudinal downward pressing drive assembly of the grinding end includes a downward pressing electric cylinder (4). There are three sets of downward pressing electric cylinders (4), which are respectively fixedly installed on one side of the first processing frame (3), the second processing frame (31) and the third processing frame (32). The first processing frame (3), the second processing frame (31) and the third processing frame (32) are all slidably installed with a push frame (41) located on the top of the downward pressing ring (42). One side of the push frame (41) is fixedly connected to the output end of the downward pressing electric cylinder (4).

3. The valve flange grinding device for valve processing according to claim 1, characterized in that: The multi-hole grinding linkage mechanism includes a transmission gear plate (45), a driven gear (46), a grinding shaft (47), a first limiting ring (48), and a second limiting ring (49). The bottom of the driven connecting column (43) passes through the lower pressure ring (42) and is fixedly connected to the top of the transmission gear plate (45). The grinding shaft (47) is provided with six sets, which are rotatably installed in a ring around the top of the lower pressure ring (42) at equal intervals. The driven gear (46) is fixedly installed on the surface of the grinding shaft (47). The driven connecting column (43) is located at the bottom of the lower pressure ring (42) and meshes with the transmission gear plate (45). The driven connecting column (43) and the transmission shaft (44) are longitudinally slidably connected by a keyway. The second limiting ring (49) is fixedly connected to the surface of the driven connecting column (43) and located at the top of the lower pressure ring (42). The second limiting ring (49) is used to longitudinally limit the rotation of the driven connecting column (43) to prevent the driven connecting column (43) from separating from the lower pressure ring (42) when rotating.

4. The valve flange grinding device for valve processing according to claim 1, characterized in that: The dual-end synchronous drive mechanism includes a synchronous motor (71), a first synchronous pulley (5), a transmission belt (51), and a second synchronous pulley (52). The synchronous motor (71) is fixedly connected to the top of the second processing frame (31), and its output end is fixedly connected to the transmission shaft (44) at the top of the second processing frame (31). The first synchronous pulley (5) is fixedly installed on the top of the surface of the transmission shaft (44) on the first processing frame (3). The second synchronous pulley (52) is fixedly installed on the top of the surface of the transmission shaft (44) on the second processing frame (31). The transmission belt (51) is sleeved on the first synchronous pulley (5) and the second synchronous pulley (52). The first synchronous pulley (5) is connected to the second synchronous pulley (52) through the transmission belt (51). The driven connecting column (43) on the second processing frame (31) has a lower pressure ring (42) through its bottom and a grinding disc is fixed thereon. The grinding disc is used to grind the top surface of the valve flange.

5. The valve flange grinding device for valve processing according to claim 1, characterized in that: The valve workpiece clamping mechanism includes a fixed clamping block (6), a movable clamping block (61), a clamping cylinder (62), and a limiting rail (63). The limiting rail (63) is fixedly installed at the four corners of the top of the operating platform (2). The fixed clamping block (6) is fixedly connected to one side of the limiting rail (63). The movable clamping block (61) is slidably installed on the limiting rail (63) and works in cooperation with the fixed clamping block (6). The clamping cylinder (62) is fixedly installed on the top of the limiting rail (63), and its output end is fixedly connected to the movable clamping block (61).

6. The valve flange grinding device for valve processing according to claim 1, characterized in that: The multi-station conversion mechanism includes a stepper motor (8), a drive gear (81), a support frame (82), and a gear ring (83). The support frame (82) is fixedly connected to the top of one side of the inner wall of the work box (1). The stepper motor (8) is fixedly installed at the bottom of the support frame (82), and its output end passes through the support frame (82) and is fixedly connected to the drive gear (81). The gear ring (83) is rotatably installed at the top of the inner wall of the work box (1) and meshes with the drive gear (81). The top of the work box (1) is provided with a rotating groove for rotating support of the gear ring (83). The top of the gear ring (83) is fixedly connected to the bottom of the operating table (2).

7. The valve flange grinding device for valve processing according to claim 1, characterized in that: The top of the first processing frame (3), the second processing frame (31) and the third processing frame (32) near the operating table (2) are all fixedly connected to a stabilizing frame (401) for limiting the rotation of the transmission shaft (44). The bottom of the first processing frame (3), the second processing frame (31) and the third processing frame (32) are all fixedly connected to a reinforcing rib (402). The side of the reinforcing rib (402) near the work box (1) is fixedly connected to the work box (1). The top of the third processing frame (32) is fixedly connected to a servo motor (7). The output end of the servo motor (7) is fixedly connected to the transmission shaft (44) on the third processing frame (32).

8. A valve flange grinding device for valve processing according to claim 5, characterized in that: The movable clamp (61) is fixedly connected to a slide bar (64) on the side near the limiting rail (63), and the limiting rail (63) has a sliding groove inside that slides with the slide bar (64).

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