Automatic valve milling device and method

Abstract

The invention provides an automatic valve milling device and method, and relates to the technical field of milling devices. The automatic valve milling device comprises a rack which is erected on the to-be-mounted ground; the milling assembly is mounted on the machine frame, and the milling assembly is used for carrying out milling operation on the valve end cover; the positioning assembly is arranged on the milling assembly, and the positioning assembly is used for carrying out axis positioning on the valve end cover; and the conveying assembly is installed on the machine frame, and the conveying assembly is used for conveying a valve to be machined. According to the device, the conveying assembly is used for conducting position deviation rectifying operation on the valve to be machined, meanwhile, the positioning assembly is matched for conducting coaxial positioning on the valve to be machined, it is guaranteed that the milling assembly can accurately conduct milling operation on the end cover of the valve to be machined, and the milling quality of the valve to be machined is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of milling devices, and particularly relates to an automatic valve milling device and method. Background Art

[0002] Valve milling refers to the process of machining valve parts using milling methods. Milling is performed by a rotating multi-edge cutting tool that executes a feed motion relative to the workpiece according to a programmed procedure and can be carried out in almost any direction. In valve machining, milling is commonly used to machine the end faces, flat surfaces, and curved surfaces of valves. For example, a valve end face milling device can achieve precise machining of the valve end face through a control box and a milling cutter holder installed on a machine tool. Valve milling plays an important role in valve manufacturing. It can ensure the accuracy and surface quality of key parts such as the sealing surface and connection surface of the valve, thereby improving the performance and service life of the valve.

[0003] For example, the invention patent with the authorized announcement number CN118789300B and the patent name of an automatic valve milling machine includes a conveying unit, on which a clamping assembly is provided, and the clamping assembly can stably clamp the valve to be processed; on both sides of the conveying unit, a propulsion unit is provided, and a milling assembly, a grinding assembly, and a cleaning assembly are provided on the propulsion unit; in the present invention, the valve bodies to be processed are placed on the clamping assembly one by one and then conveyed forward by the conveying unit. During the conveying process, they pass through the milling assembly, the grinding assembly, and the cleaning assembly in sequence, successively realizing the deburring and shaving of the end part of the valve body, the grinding and trimming of the end part of the valve body, and the cleaning of debris and foreign objects inside the valve body, achieving the automated processing of the valve body blank parts, being able to completely shave off the burrs on the valve body, and improving the processing efficiency of the valve body. Moreover, with the cooperation of the auxiliary assembly to supplement the milling fluid, it can cool the milling assembly and the grinding assembly and protect the processing parts on the valve body.

[0004] However, this patent uses a chain conveyor to convey the valve to be processed with the clamping assembly and conveys the valve to be processed to the milling position. Due to the limited conveying accuracy of the chain conveyor, the central axis of the end cover of the valve to be processed does not coincide with the central axis of the milling tool, and the milling tool is offset at the milling position of the valve to be processed, affecting the milling quality of the valve to be processed, and there are certain defects.

[0005] In view of this, the present application is specifically proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide an automatic valve milling device and method to solve the problems raised in the above background art.

[0007] To solve the above technical problems, the technical solution of the present invention is as follows: An embodiment of the present invention provides an automatic valve milling device, including: A frame, which is erected on the ground to be installed. A milling component, which is installed on the frame and used for milling the valve end cover. A positioning component, which is arranged on the milling component and used for axially positioning the valve end cover. A conveying component, which is installed on the frame and used for conveying the valve to be processed. The conveying component includes: A load-bearing conveying bar, which is installed on the frame and used for positioning and bearing the valve to be processed and conveying it. Two positioning support bars are fixedly arranged, and the two positioning support bars are located above the load-bearing conveying bar. There is a positioning gap for positioning the valve to be processed between the two positioning support bars. A guiding positioning bar, which is fixedly arranged at the feeding end of the positioning support bar and is in an inclined downward "eight" shape.

[0008] Furthermore, the load-bearing conveying bar includes: Two driving rollers are arranged, and the two driving rollers are rotatably installed on the frame. Multiple transmission positioning bars are arranged, and the multiple transmission positioning bars are hinged. The transmission positioning bars are drivingly connected to the two driving rollers, and positioning grooves matching the bottom of the valve to be processed are arranged on the transmission positioning bars. A transmission motor, which is fixedly installed on the frame and is drivingly connected to one of the driving rollers.

[0009] Furthermore, the distance between the two driving rollers is greater than the length of the positioning support bar.

[0010] Furthermore, three milling components are provided, and two of the milling components perform horizontal milling operations, and the third milling component performs vertical milling operations.

[0011] Furthermore, the milling component includes: A mounting seat, on which a driving sleeve is rotatably installed. A milling cutter, which is threadedly installed at the end of the driving sleeve, and the rotation direction of the milling cutter is opposite to the installation and fastening direction. A milling motor, which is fixedly installed on the mounting seat and is drivingly connected to the driving sleeve.

[0012] Further, the two milling assemblies for performing horizontal milling operations are installed through a horizontal driving member, and the horizontal driving member includes: Guide rails, wherein two guide rails are arranged in parallel and fixedly mounted on the frame; A driving seat, wherein two driving seats are provided, the two driving seats are slidably mounted on the guide rail, and the mounting seat is fixedly mounted on the driving seat; A synchronous drive screw rod, which is rotatably mounted on the frame and is threadedly connected to the two drive seats; A traveling motor is fixedly mounted on the frame and is drivingly connected to the synchronous driving screw.

[0013] Further, the milling assembly for performing vertical milling operation is installed by a vertical travel member, and the vertical travel member includes: A positioning frame, wherein the positioning frame is fixedly mounted on the frame, and the mounting seat is slidably mounted on the positioning frame; A lifting cylinder is fixedly mounted on the inner top surface of the positioning frame, and an output end of the lifting cylinder is connected to the mounting seat.

[0014] Furthermore, the positioning member includes: A fixed mounting rod, the fixed mounting rod is threadedly mounted on the mounting seat, and the fixed mounting rod is located inside the driving sleeve; A positioning sleeve, which is slidably arranged outside the fixed installation rod, and the positioning sleeve slides along the length direction of the fixed installation rod; A buffer spring is sleeved on the outside of the fixed mounting rod, and two ends of the buffer spring are respectively in contact with the positioning sleeve and the mounting seat.

[0015] Furthermore, one end of the positioning sleeve away from the mounting seat has a chamfered structure.

[0016] On the other hand, the present invention also discloses a valve automatic milling method, which uses the above-mentioned valve automatic milling device, comprising: Loading and correction: the valve to be processed is placed in the positioning groove and transported and moved along with the transmission positioning bar. At the same time, the top of the valve to be processed is corrected by the guide positioning bar until it is in a vertical state; Coaxial positioning: when the valve to be processed is transferred to the milling position through the transmission positioning strip, three positioning sleeves are respectively inserted into the three end cover holes of the valve and coaxially positioned; Synchronous milling: three milling components respectively mill the three end faces of the valve to be processed to complete the milling process of the valve to be processed; Continuous operation: According to the above steps, perform milling operations on the valves to be processed one by one to achieve continuous and automated milling of the valves to be processed.

[0017] The above solution of the present invention has at least the following beneficial effects: The present invention uses a conveying component to convey the valves to be processed. During the conveying process, the guiding positioning strip and the positioning support strip correct the position of the valves to be processed, achieving the primary positioning of the valves to be processed. Subsequently, before milling the valves to be processed, the positioning component performs coaxial positioning on the valves to be processed. When the milling cutter performs milling on the valves to be processed, it can completely coincide with the milling position, effectively avoiding the problem of milling position deviation, thereby greatly improving the milling quality of the valves to be processed. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of a valve automatic milling device provided by the present invention; Figure 2 It is a schematic top view structure diagram of a valve automatic milling device provided by the present invention; Figure 3 It is a schematic diagram of the state structure of the conveying component of a valve automatic milling device provided by the present invention for initially positioning the valves to be processed; Figure 4 It is a schematic diagram of the coaxial positioning state structure of a valve automatic milling device provided by the present invention; Figure 5 It is a schematic diagram of the installation structure of the positioning component of a valve automatic milling device provided by the present invention; Figure 6 It is a schematic diagram of the fixed installation rod structure of a valve automatic milling device provided by the present invention; Figure 7 It is a schematic diagram of the synchronous drive lead screw structure of a valve automatic milling device provided by the present invention.

[0019] Description of the reference numerals: 1, frame; 2, milling component; 3, positioning component; 4, conveying component; 5, carrying and conveying strip; 6, positioning support strip; 7, guiding positioning strip; 8, driving roller; 9, transmission positioning strip; 10, positioning groove; 11, conveying motor; 12, mounting seat; 13, milling cutter; 14, driving sleeve; 15, milling motor; 16, guide rail; 17, driving seat; 18, synchronous drive lead screw; 19, traveling motor; 20, positioning frame; 21, lifting cylinder; 22, fixed installation rod; 23, positioning sleeve; 24, buffer spring; 25, moving chute; 26, limit pin; 27, limit cover; 28, bearing; 101, valve to be processed. Detailed Embodiments

[0020] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be completely conveyed to those skilled in the art.

[0021] Embodiment 1: As Figures 1 to 7 shown, an embodiment of the present invention provides an automatic valve milling device, including: A frame 1, and the frame 1 is erected on the ground to be installed.

[0022] A milling assembly 2, the milling assembly 2 is installed on the frame 1, and the milling assembly 2 is used for milling the valve end cover.

[0023] A positioning assembly 3, the positioning assembly 3 is arranged on the milling assembly 2, and the positioning assembly 3 is used for axially positioning the valve end cover.

[0024] A conveying assembly 4, the conveying assembly 4 is installed on the frame 1, and the conveying assembly 4 is used for conveying the valve 101 to be processed.

[0025] The conveying assembly 4 includes: A load-bearing conveying bar 5, the load-bearing conveying bar 5 is installed on the frame 1, and the load-bearing conveying bar 5 is used for positioning and bearing the valve 101 to be processed and conveying it.

[0026] Two positioning support bars 6 are fixedly arranged, and the two positioning support bars 6 are located above the load-bearing conveying bar 5. There is a positioning gap for positioning the valve 101 to be processed between the two positioning support bars 6.

[0027] A guiding positioning bar 7, the guiding positioning bar 7 is fixedly arranged at the feeding end of the positioning support bar 6, and the guiding positioning bar 7 is in an inclined downward "eight" shape.

[0028] In this embodiment, as Figure 3As shown, the valve 101 to be processed is placed on the load-carrying conveyor strip 5 for transportation. During transportation, the guiding and positioning strip 7 corrects the deviation of the valve 101 to be processed. After the position of the valve 101 to be processed is corrected, the top of the valve 101 to be processed is placed on the positioning conveyor strip to complete the preliminary positioning of the valve 101 to be processed. When the valve 101 to be processed is transported to the milling assembly 2, the positioning assembly 3 co-axially positions the end cap of the valve 101 to be processed, and at the same time, the milling assembly 2 mills the end cap of the valve 101 to be processed. Due to the preliminary positioning and co-axial positioning of the valve 101 to be processed, the milling assembly 2 can accurately mill the end cap of the valve 101 to be processed, greatly improving the processing quality of the valve 101 to be processed.

[0029] In a specific embodiment, the load-carrying conveyor strip 5 includes: Drive rollers 8, two of the drive rollers 8 are provided, and the two drive rollers 8 are rotatably installed on the frame 1.

[0030] Transmission positioning strips 9, a plurality of the transmission positioning strips 9 are provided, and the plurality of transmission positioning strips 9 are hinged. The transmission positioning strips 9 are drivingly connected to the two drive rollers 8, and positioning grooves 10 matching the bottom of the valve 101 to be processed are provided on the transmission positioning strips 9.

[0031] Conveyor motor 11, the conveyor motor is fixedly installed on the frame 1, and the conveyor motor is drivingly connected to one of the drive rollers 8.

[0032] After the conveyor motor 11 is started, the drive rollers 8 rotate, and the transmission positioning strips 9 installed between the two drive rollers 8 rotate together. The valve 101 to be processed placed in the positioning grooves 10 moves together with the transmission positioning strips 9. When the transmission positioning strips 9 drive the valve 101 to be processed to move to the position of the milling assembly 2, the conveyor motor 11 stops working. At this time, the positioning assembly 3 co-axially positions the valve 101 to be processed, and at the same time, the milling assembly 2 mills the end cap of the valve 101 to be processed. After the valve 101 to be processed completes the milling operation, the conveyor motor 11 is started, and the valve 101 to be processed is continuously transported to the position of the milling assembly 2 through the transmission positioning strips 9 for milling operation. Repeat the above operation to complete the continuous milling operation of the valve 101 to be processed.

[0033] Wherein, the distance between the two drive rollers 8 is greater than the length of the positioning support strip 6. After the valve 101 to be processed is placed in the positioning grooves 10, the valve 101 to be processed moves together with the transmission positioning strips 9. During this process, the guiding and positioning strip 7 corrects the deviation of the valve 101 to be processed. After the deviation correction is completed, the top of the valve 101 to be processed is in close contact with the top surface of the positioning support strip 6 to complete the preliminary positioning of the valve 101 to be processed.

[0034] Furthermore, three milling assemblies 2 are provided, and two of the milling assemblies 2 perform horizontal milling operations, and the third milling assembly 2 performs vertical milling operations. The three milling assemblies 2 perform milling operations on the three end covers of the valve 101 to be processed respectively.

[0035] Specifically, the milling assembly 2 includes: The mounting seat 12 has a driving sleeve 14 rotatably mounted on the mounting seat 12. The driving sleeve 14 is rotatably mounted on the mounting seat 12 via a bearing 28.

[0036] A milling cutter 13, wherein the milling cutter 13 is threadedly mounted on the end of the driving sleeve 14, and the rotation direction of the milling cutter 13 is opposite to the installation and fastening direction; The milling motor 15 is fixedly mounted on the mounting seat 12 and is transmission-connected to the driving sleeve 14. The milling motor 15 is transmission-connected to the driving sleeve 14 via a helical gear set (not shown in the figure).

[0037] In this embodiment, when the valve 101 to be processed needs to be milled, the milling motor 15 is started, and the milling motor 15 drives the milling cutter 13 to rotate through the driving sleeve 14, and then the end cover of the valve 101 to be processed is milled by the milling cutter 13.

[0038] In order to ensure that the valve 101 to be processed can be accurately transported to the position of the milling component 2, a photoelectric sensor can be set on the mounting seat 12. When the photoelectric sensor detects that the valve 101 to be processed reaches the milling position, the signal detected by the photoelectric sensor is transmitted to the controller, and then the controller controls the conveying motor 11 to stop working.

[0039] It should be noted that the controller receives the detection signal of the photoelectric sensor and controls the conveying motor 11 to be turned off, which belongs to the prior art, and its specific circuit structure and control method are not described here in detail.

[0040] Further, the two milling assemblies 2 for performing horizontal milling operations are installed through a horizontal driving member, and the horizontal driving member includes: The guide rails 16 are two in parallel and fixedly mounted on the frame 1 .

[0041] The driving seat 17 is provided with two driving seats 17 , and the two driving seats 17 are slidably mounted on the guide rail 16 , and the mounting seat 12 is fixedly mounted on the driving seat 17 .

[0042] Synchronous drive lead screw 18, the synchronous drive lead screw 18 is rotatably installed on the frame 1, and the synchronous drive lead screw 18 is threadedly connected to both of the drive seats 17.

[0043] Advancing motor 19, the advancing motor 19 is fixedly installed on the frame 1, and the advancing motor 19 is drivingly connected to the synchronous drive lead screw 18.

[0044] In this embodiment, the thread helix directions of the synchronous drive lead screw 18 and the two drive seats 17 are opposite. Driven by the advancing motor 19, the synchronous drive lead screw 18 rotates. Since the drive seats 17 threadedly connected to the synchronous drive lead screw 18 are restricted by the guide rail 16 and cannot rotate together with the synchronous drive lead screw 18, the two drive seats 17 can only approach or separate from each other synchronously along the length direction of the synchronous drive lead screw 18, thereby driving the milling component 2 to perform milling operations on the two end caps of the valve to be processed 101 in the horizontal direction.

[0045] It should be noted that the advancing motor 19 uses a servo motor. A servo motor refers to an engine that controls the operation of mechanical components in a servo system and is an auxiliary motor indirect speed change device. A servo motor can control speed, and the position accuracy is very accurate. It can convert a voltage signal into torque and rotational speed to drive the controlled object. The rotational speed of the rotor of the servo motor is controlled by the input signal and can respond quickly. In an automatic control system, it is used as an actuator and has characteristics such as a small electromechanical time constant and high linearity. It can convert the received electrical signal into angular displacement or angular velocity output on the motor shaft. The advancing motor 19 uses a servo motor, which can accurately control the advancing distance of the milling cutter 13, thereby ensuring the milling quality of the valve to be processed 101.

[0046] Furthermore, the milling component 2 for performing milling operations in the vertical direction is installed through a vertical advancing member, and the vertical advancing member includes: Positioning frame 20, the positioning frame 20 is fixedly installed on the frame 1, and the mounting seat 12 is slidably installed on the positioning frame 20.

[0047] Lifting cylinder 21, the lifting cylinder 21 is fixedly installed on the inner top surface of the positioning frame 20, and the output end of the lifting cylinder 21 is connected to the mounting seat 12.

[0048] In this embodiment, when the valve to be processed 101 reaches the milling position, the piston rod output end of the lifting cylinder 21 pushes the milling component 2 to move downward, pushing the milling cutter 13 into contact with the end cap of the valve to be processed 101. Subsequently, the milling cutter 13 performs milling operations on the end cap of the valve to be processed 101 under the drive of the milling motor 15.

[0049] Furthermore, the positioning member includes: A fixed mounting rod 22, the fixed mounting rod 22 is threadedly mounted on the mounting base 12, and the fixed mounting rod 22 is located inside the driving sleeve 14.

[0050] A positioning sleeve 23, the positioning sleeve 23 is slidably arranged outside the fixed mounting rod 22, and the positioning sleeve 23 slides along the length direction of the fixed mounting rod 22.

[0051] A buffer spring 24, the buffer spring 24 is sleeved outside the fixed mounting rod 22, and both ends of the buffer spring 24 are respectively abutted against the positioning sleeve 23 and the mounting base 12.

[0052] In this embodiment, a moving chute 25 is provided along the length direction on the inner wall of the positioning sleeve 23, and a limit pin 26 is slidably arranged in the moving chute 25. The limit pin 26 is fixedly mounted on the outer side wall of the fixed mounting rod 22, realizing the movable connection between the positioning sleeve 23 and the fixed mounting rod 22. In order to prevent the limit pin 26 from sliding out of the moving chute 25, a limit cover 27 is threadedly mounted at the end of the positioning sleeve 23.

[0053] In addition, one end of the positioning sleeve 23 away from the mounting base 12 has a chamfer structure. When the positioning member enters the end cover of the valve 101 to be processed, the chamfer structure can guide the positioning sleeve 23 to enter. When the three positioning sleeves 23 are completely inserted into the inner hole of the end cover of the valve 101 to be processed, the coaxial positioning of the valve 101 to be processed is completed. At the same time, the milling cutter 13 coaxially arranged with the positioning sleeve 23 gradually approaches the valve 101 to be processed, and mills the end cover of the valve 101 to be processed.

[0054] Among them, the positioning sleeve 23 realizes elastic mounting by using the elasticity of the buffer spring 24. When the milling cutter 13 approaches the valve 101 to be processed, the positioning sleeve 23 can contract without hindering the advancement of the milling cutter 13. In addition, the outer diameter of the positioning sleeve 23 matches the inner diameter of the end cover of the valve 101 to be processed. When the three positioning sleeves 23 are all inserted into the inner hole of the end cover of the valve 101 to be processed, the valve 101 to be processed is completely positioned. At this time, the milling assembly 2 can perform precise milling operations on the end cover of the valve 101 to be processed.

[0055] Embodiment 2: On the other hand, the present invention also discloses a method for automatically milling a valve, using the above-mentioned valve automatic milling device, including: S100. Loading and deviation correction: Place the valve 101 to be processed into the positioning groove 10 and convey and move it along with the transmission positioning strip 9. At the same time, the position of the top of the valve 101 to be processed is corrected through the guiding positioning strip 7 until it is in a vertical state.

[0056] Specifically, after the valve to be processed 101 is placed in the positioning groove 10, the transmission positioning bar 9 drives the valve to be processed 101 to move towards the milling component 2. During this process, the guiding positioning bar 7 inclines upward along the traveling direction of the valve to be processed 101 and is in a closed state. When the valve to be processed 101 is inclined in position, the guiding positioning bar 7 can gradually correct the position of the valve to be processed 101. Finally, when the valve to be processed 101 reaches the position of the positioning support bar 6, the valve to be processed 101 is erected on the upper surface of the positioning support bar 6, and at this time, the valve to be processed 101 is in a vertical state.

[0057] It should be noted that the operation of placing the valve to be processed 101 in the positioning groove 10 can be completed by a manipulator. The manipulator grabs and places the valve to be processed 101, and its position deviation is not large, so the guiding positioning bar 7 can be used for deviation correction operation.

[0058] S200. Coaxial positioning: When the valve to be processed 101 is transmitted to the milling position through the transmission positioning bar 9, the three positioning sleeves 23 are respectively inserted into the three end cover holes of the valve and coaxial positioning is performed.

[0059] Specifically, the positioning sleeve 23 is coaxially arranged with the milling cutter 13. When the positioning sleeve 23 completely enters the inner hole of the end cover of the valve to be processed 101 and fits with the inner hole of the end cover of the valve to be processed 101, the positioning sleeve 23, the milling cutter 13, and the inner hole of the end cover of the valve to be processed 101 are coaxial, realizing the coaxial positioning of the three, and ensuring the precise milling of the end cover of the valve to be processed 101 by the milling cutter 13.

[0060] S300. Synchronous milling: The three milling components 2 respectively mill the three end faces of the valve to be processed 101 to complete the milling process of the valve to be processed 101.

[0061] Specifically, the three milling components 2 respectively approach the three end covers of the valve to be processed 101 and perform synchronous milling operations on the end covers of the valve to be processed 101.

[0062] S400. Continuous operation: According to the above steps, the milling operation is performed on each valve to be processed 101 one by one to realize the continuous automatic milling of the valve to be processed 101.

[0063] Specifically, the conveying component 4 conveys the valves to be processed 101 to the position of the milling component 2 one by one. When the valve to be processed 101 reaches the position of the milling component 2, the conveying component 4 stops running and waits for the current valve to be processed 101 to complete the milling operation. After the current valve to be processed 101 completes the milling operation, the conveying component 4 continues the conveying operation of the valve to be processed 101, and repeats the above operation to realize the continuous milling operation of the valve to be processed 101.

[0064] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An automatic valve milling device, characterized in that: Comprising: A frame (1), and the frame (1) is erected on the ground to be installed. A milling component (2), and the milling component (2) is installed on the frame (1), and the milling component (2) is used for milling the valve end cover. A positioning component (3), and the positioning component (3) is arranged on the milling component (2), and the positioning component (3) is used for axially positioning the valve end cover. A conveying component (4), and the conveying component (4) is installed on the frame (1), and the conveying component (4) is used for conveying the valve to be processed. The conveying component (4) includes: A bearing conveying strip (5), and the bearing conveying strip (5) is installed on the frame (1), and the bearing conveying strip (5) is used for positioning and bearing the valve to be processed and conveying it. Two positioning support strips (6) are fixedly arranged, and the two positioning support strips (6) are located above the bearing conveying strip (5), and there is a positioning gap for positioning the valve to be processed between the two positioning support strips (6). A guiding positioning strip (7), and the guiding positioning strip (7) is fixedly arranged at the feeding end of the positioning support strip (6), and the guiding positioning strip (7) is in an inclined downward "eight" shape.

2. The automatic milling device for a valve according to claim 1, wherein: The bearing conveying strip (5) includes: Two driving rollers (8), and the two driving rollers (8) are rotatably installed on the frame (1). Multiple transmission positioning strips (9), and the multiple transmission positioning strips (9) are hinged, and the transmission positioning strips (9) are drivingly connected to the two driving rollers (8), and positioning grooves (10) matching the bottom of the valve to be processed are arranged on the transmission positioning strips (9). A conveying motor (11), and the conveying motor is fixedly installed on the frame (1), and the conveying motor is drivingly connected to one of the driving rollers (8).

3. An automatic valve milling device according to claim 1, characterized in that: The distance between the two driving rollers (8) is greater than the length of the positioning support strip (6).

4. The automatic valve milling device according to claim 1, characterized in that: Three milling components (2) are provided, and two of the milling components (2) perform horizontal milling operations, and the third milling component (2) performs vertical milling operations.

5. The automatic milling device for a valve according to claim 4, wherein: The milling component (2) includes: A mounting seat (12), and a driving sleeve (14) is rotatably installed on the mounting seat (12). A milling cutter (13), and the milling cutter (13) is threadedly installed at the end of the driving sleeve (14), and the rotation direction of the milling cutter (13) is opposite to the installation tightening direction. A milling motor (15), and the milling motor (15) is fixedly installed on the mounting seat (12), and the milling motor (15) is drivingly connected to the driving sleeve (14).

6. The automatic milling device for a valve according to claim 5, characterized in that: The two milling components (2) performing horizontal milling operations are installed by a horizontal driving member, and the horizontal driving member includes: Two guide rails (16) are arranged in parallel, and the two guide rails (16) are fixedly installed on the frame (1). The driving seats (17), there are two driving seats (17), the two driving seats (17) are slidably mounted on the guide rail (16), and the mounting seat (12) is fixedly mounted on the driving seat (17); The synchronous driving lead screw (18), the synchronous driving lead screw (18) is rotatably mounted on the frame (1), and the synchronous driving lead screw (18) is threadedly connected to both of the two driving seats (17); The traveling motor (19), the traveling motor (19) is fixedly mounted on the frame (1), and the traveling motor (19) is drivingly connected to the synchronous driving lead screw (18).

7. The automatic milling device for a valve according to claim 5, wherein: The milling assembly (2) for performing milling operations in the vertical direction is mounted by a vertical traveling member, and the vertical traveling member includes: The positioning frame (20), the positioning frame (20) is fixedly mounted on the frame (1), and the mounting seat (12) is slidably mounted on the positioning frame (20); The lifting cylinder (21), the lifting cylinder (21) is fixedly mounted on the inner top surface of the positioning frame (20), and the output end of the lifting cylinder (21) is connected to the mounting seat (12).

8. An automatic valve milling device according to claim 5, characterized in that: The positioning member includes: The fixedly mounted rod (22), the fixedly mounted rod (22) is threadedly mounted on the mounting seat (12), and the fixedly mounted rod (22) is located inside the driving sleeve (14); The positioning sleeve (23), the positioning sleeve (23) is slidably disposed outside the fixedly mounted rod (22), and the positioning sleeve (23) slides along the length direction of the fixedly mounted rod (22); The buffer spring (24), the buffer spring (24) is sleeved outside the fixedly mounted rod (22), and the two ends of the buffer spring (24) are respectively abutted against the positioning sleeve (23) and the mounting seat (12).

9. An automatic valve milling device according to claim 8, characterized in that: One end of the positioning sleeve (23) away from the mounting seat (12) has a chamfer structure.

10. An automatic valve milling method, which uses the automatic valve milling device described in any one of claims 1-9, and is characterized in that: Including: Loading and deviation correction, placing the valve to be processed into the positioning groove (10), and conveying and moving it along with the transmission positioning strip (9). At the same time, the position of the top of the valve to be processed is corrected by the guiding positioning strip (7) until it is in a vertical state; Coaxial positioning, when the valve to be processed is transmitted to the milling position through the transmission positioning strip (9), the three positioning sleeves (23) are respectively inserted into the three end cover holes of the valve and coaxial positioning is performed; Synchronous milling, the three milling assemblies (2) respectively mill the three end faces of the valve to be processed to complete the milling process of the valve to be processed; Continuous operation, according to the above steps, milling the valves to be processed one by one to realize the continuous automatic milling of the valves to be processed.

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