A fully automatic valve grinding machine

Abstract

The present invention provides a fully automatic valve grinding machine, including a workbench, on which a protective housing is provided. In the middle of the top surface of the workbench, a rotating mechanism is provided, and the top of the rotating mechanism is connected to an annular grinding disc. On one side of the annular grinding disc, a valve seat end face grinding mechanism is provided. On the side of the valve seat end face grinding mechanism, a water absorption device is provided. On the side of the water absorption device, a valve cover plate grinding mechanism is provided. On the side of the valve cover plate grinding mechanism, a grinding disc flatness detection device is provided. On the other side of the annular grinding disc, a grinding fluid spraying device and a cleaning mechanism are provided. The fully automatic valve grinding machine is used to solve the technical problems of high technical difficulty in manually grinding the valve cover plate and the valve seat end face, high requirements for the operation experience of personnel, long time consumption (average time consumption exceeding 480 minutes), and low qualified rate of sealing performance.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of high-precision grinding, and particularly relates to a fully automatic valve grinding machine. Background Art

[0002] A grinding machine is a device for grinding the surface of an object, and its purpose is to make the flatness of the object surface meet the requirements we set. Therefore, the flatness accuracy of the grinding machine is an important part of measuring the machine.

[0003] A large number of flat valves are installed in the aircraft mechanical parts and accessories for fluid sealing and direction control of systems such as fuel and air conditioning. During overhaul, it is necessary to restore the sealing performance specified in the valve design. At present, most of the grinding machines on the market have low accuracy and cannot meet the valve flatness requirements of the aerospace industry. The aviation equipment support industry has always used manual grinding to ensure its sealing performance.

[0004] The inventor found the following defects during the operation of specific embodiments:

[0005] The technology of manually grinding the valve cover piece and the end face of the valve seat is difficult and requires high operating experience of personnel. There are problems such as long time consumption (average time consumption exceeds 480 minutes) and low qualified rate of sealing performance. Summary of the Invention

[0006] Technical Problems to be Solved by the Invention

[0007] The present invention provides a fully automatic valve grinding machine to solve the technical problems of difficult technology for manually grinding the valve cover piece and the end face of the valve seat, high requirement for the operating experience of personnel, long time consumption (average time consumption exceeds 480 minutes), and low qualified rate of sealing performance in the above background art.

[0008] Technical Solution

[0009] To achieve the above object, the technical solution provided by the present invention is: a fully automatic valve grinding machine, characterized in that: it includes a workbench, a protective housing is provided on the workbench, a rotating mechanism is provided in the middle of the top surface of the workbench, a ring grinding disc is connected to the top of the rotating mechanism, a valve seat end face grinding mechanism is provided on one side of the ring grinding disc, a water absorption device is provided on the side of the valve seat end face grinding mechanism, a valve cover piece grinding mechanism is provided on the side of the water absorption device, a grinding disc flatness detection device is provided on the side of the valve cover piece grinding mechanism, and a grinding fluid spraying device and a cleaning mechanism are provided on the other side of the ring grinding disc.

[0010] Further, the end face grinding mechanism of the valve seat includes a first motor, which drives a transverse slide. A first slide rail is provided on the top of the transverse slide, and a moving slide is connected to the top of the first slide rail. A second motor is provided on one side of the top of the moving slide, and the second motor is connected to a lifting slide in a matching manner. A bracket is detachably connected to the side of the lifting slide. An adjusting ring is inserted into the top of the bracket, and the valve seat is inserted into the adjusting ring. A first counterweight can be erected on the top of the valve seat.

[0011] Further, an annular hole is formed in the middle of the bracket, and surfaces A and B are provided in the annular hole. Surfaces C, D, E, and F are provided in the adjusting ring. Surface A of the bracket supports the end face of surface C of the adjusting ring, and the small plane of surface B of the bracket cooperates with the small plane of surface D of the adjusting ring to prevent the adjusting ring from rotating. And surface E of the adjusting ring cooperates with two struts of the valve housing to prevent the valve housing from rotating.

[0012] Further, the water absorption device includes a water collecting cover, and a negative pressure suction pipe is connected to the top of the water collecting cover. The water collecting cover is connected to the valve cover sheet grinding mechanism by screws.

[0013] Further, the valve cover sheet grinding mechanism includes a servo motor, which is connected to a sliding support plate through a rotating lead screw in a matching manner. A sliding column is connected to the top of the sliding support plate. A first lifting electric cylinder is provided on the top of the sliding column, and a lifting baffle is connected to the bottom of the first lifting electric cylinder. An arc-shaped groove is arranged outside the lifting baffle, and an arc-shaped positioning groove is formed at the front end of the arc-shaped groove. The arc-shaped positioning groove is detachably connected to a driven wheel. A rotating motor is provided at the top of the rear end of the arc-shaped groove, and the bottom of the rotating motor passes through the lifting baffle and is connected to a driving retaining ring. The driving retaining ring, the driven wheel and a working ring are matched with each other. A spacer is arranged in the working ring, and a valve cover sheet is arranged in the middle of the spacer. A second counterweight is connected to the top of the valve cover sheet in a matching manner. The valve cover sheet grinding mechanism is electrically connected to the flatness detection device of the grinding disc, and can repair the flatness of the annular grinding disc after receiving the disc repair signal.

[0014] Further, the flatness detection device of the grinding disc includes a connecting bottom plate, and a standard flatness platform is detachably connected to the top surface of the connecting bottom plate. A support plate is provided on the side of the standard flatness platform, and a transverse moving platform is connected to the top of the support plate. A transverse slide rail is connected to the side of the transverse moving platform, and a moving bracket is slidably connected to the transverse slide rail through a slider. A second lifting electric cylinder is provided on the moving bracket, and an electronic micrometer is connected to the bottom of the second lifting electric cylinder. A water pattern camera is provided at the external connection of the transverse moving platform. A portal lighting frame is detachably connected to the connecting bottom plate at the bottom of the water pattern camera. A temperature sensor is provided outside the transverse moving platform, and a laser rangefinder is provided on the side of the water pattern camera.

[0015] Further, the abrasive slurry spraying device includes a magnetic stirring device. A grinding fluid placement cylinder is placed on the top of the magnetic stirring device. The grinding fluid placement cylinder is connected to an atomizing nozzle through a grinding fluid delivery pipe. A compressed air pipeline is connected to the side of the atomizing nozzle. The atomizing nozzle and the compressed air pipeline are supported and connected by an L-shaped bracket.

[0016] Further, the cleaning mechanism includes a support frame. A concave plate is connected to the side of the support frame. A plurality of lifting columns are connected to the top of the concave plate. A lifting motor is connected to the top of the lifting columns. The bottom of the lifting motor is connected to a lifting plate. The lifting plate is slidably connected to the lifting columns. A third rotating motor is provided on the top of the lifting plate. A cleaning brush is connected to the bottom of the third rotating motor.

[0017] Beneficial effects

[0018] Adopting the technical solution provided by the present invention, compared with the prior art, it has the following beneficial effects:

[0019] The present invention is reasonably designed. By using the cooperation between various devices, the valve housing and the valve cover plate on the aircraft can be ground on the same grinding disc. The overall precision is relatively high, and the degree of automation is relatively high, improving the grinding efficiency and flatness precision;

[0020] The purpose of the present invention is to provide a valve seat end face grinding mechanism, which realizes functions such as stable clamping of the plane valve during the grinding process, adaptively changing the height of the valve housing during the grinding process, and automatically controlling the trajectory of the valve housing during the grinding process, effectively solving the technical problems of intelligent grinding of the plane valve;

[0021] A complete set of devices with high uniformity of abrasive slurry is provided, which can realize the uniform addition of abrasive slurry in the intelligent grinding device of the plane valve, and solve problems such as uneven smearing and waste of abrasive slurry existing in manual addition of abrasive slurry. Brief description of the drawings

[0022] Figure 1 is a structural schematic diagram of the present invention;

[0023] Figure 2 is an enlarged structural schematic diagram of part A of the present invention;

[0024] Figure 3 is an enlarged structural schematic diagram of part B of the present invention;

[0025] Figure 4 is a structural schematic diagram of the protective housing of the present invention;

[0026] Figure 5 is a structural schematic diagram of the valve seat end face grinding mechanism of the present invention;

[0027] Figure 6Partial structural schematic diagram of the valve seat end face grinding mechanism of the present invention;

[0028] Figure 7 Another partial structural schematic diagram of the valve seat end face grinding mechanism of the present invention;

[0029] Figure 8 Structural schematic diagram of the valve cover plate grinding mechanism of the present invention;

[0030] Figure 9 Another perspective structural schematic diagram of the valve cover plate grinding mechanism of the present invention;

[0031] Figure 10 Partial structural schematic diagram of the valve cover plate grinding mechanism of the present invention;

[0032] Figure 11 Structural schematic diagram of the grinding disc flatness detection device of the present invention;

[0033] Figure 12 Structural schematic diagram of the grinding fluid spraying device of the present invention;

[0034] Figure 13 Structural schematic diagram of the cleaning mechanism of the present invention.

[0035] Reference numerals

[0036] 1, Workbench; 2, Protective housing; 3, Ring grinding disc; 4, Valve seat end face grinding mechanism; 41, First motor; 42, Horizontal slide; 43, First slide rail; 44, Moving slide; 45, Second motor; 46, Lifting slide; 47, Bracket; 48, Adjusting ring; 49, First counterweight block; 5, Water absorption device; 51, Water collecting cover; 6, Valve cover plate grinding mechanism; 61, Servo motor; 62, Sliding support plate; 63, Sliding column; 64, First lifting electric cylinder; 65, Lifting baffle; 66, Arc-shaped positioning groove; 67, Driven wheel; 68, Active retaining ring; 69, Working ring; 691, Spacer ring; 692, Second counterweight block; 7, Grinding disc flatness detection device; 71, Connecting bottom plate; 72, Standard flatness platform; 73, Support plate; 74, Horizontal moving table; 75, Horizontal slide rail; 76, Moving bracket; 77, Second lifting electric cylinder; 78, Water pattern camera; 79, Gantry lighting frame; 791, Temperature sensor; 792, Laser rangefinder; 8, Grinding fluid spraying device; 81, Magnetic stirring device; 82, Grinding fluid placement cylinder; 83, Atomizing nozzle; 84, Compressed air pipeline; 85, L-shaped bracket support; 9, Cleaning mechanism; 91, Support frame; 92, Concave plate; 93, Lifting column; 94, Lifting motor; 95, Lifting plate; 96, Third rotating motor; 97, Cleaning brush. Detailed implementation manners

[0037] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation", "provided with", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment

[0041] Referring to the appended Figures 1-13 , a fully automatic valve grinding machine includes a workbench 1. A protective housing 2 is provided on the workbench 1. A rotating mechanism is provided in the middle of the top surface of the workbench 1. The top of the rotating mechanism is connected to an annular grinding disc 3. A valve seat end face grinding mechanism 4 is provided on one side of the annular grinding disc 3. A water absorption device 5 is provided on the side of the valve seat end face grinding mechanism 4. A valve cover sheet grinding mechanism 6 is provided on the side of the water absorption device 5. A grinding disc flatness detection device 7 is provided on the side of the valve seat end face grinding mechanism 4. A grinding fluid spraying device 8 and a cleaning mechanism 9 are provided on the other side of the annular grinding disc 3.

[0042] It should be noted that the name of the valve seat may vary from person to person, and some may also call it the valve housing. Here, it is explained that the valve seat mentioned in this application and the valve housing are the same product, both high-precision valve devices on the aircraft. For its specific structure, reference can be made to Figure 6 The end face part of the valve seat at the top and Figure 10 the valve cover plate part of

[0043] Four sides of the protective housing 2 are provided with transparent observation windows and sliding doors, which are used to protect the internal structure and can monitor the inside at all times through the transparent observation windows.

[0044] When this device works, start the working signal. Place the valve seat in the valve seat end face grinding mechanism 4 and grind it on the annular grinding disc 3 according to the set technological procedure.

[0045] Place the valve cover plate in the valve cover plate grinding mechanism 6 and grind the valve cover plate according to the set technological procedure.

[0046] During the grinding process, the grinding fluid spraying device 8 will continuously spray grinding fluid to improve the grinding effect.

[0047] After the grinding is completed, the equipment will enter the cleaning and maintenance program. At this time, it is necessary to ultrasonically clean the working ring 69, fixture, and pressing block that are in direct contact with the end face of the valve cover plate and the valve seat. The cleaning mechanism 9 cooperates with the water absorption device 5 to clean the disc surface, brush the disc, dry the water marks on the disc surface, and the grinding disc flatness detection device 7 detects and corrects the flatness of the grinding disc. When the flatness of the grinding disc reaches ±2um, the work ends and prepares for the next work.

[0048] It should be noted that the valve cover plate and the end face of the valve seat can be ground simultaneously or separately. The valve seat end face grinding mechanism 4 and the valve cover plate grinding mechanism 6 can be arranged on both sides of the grinding disc according to different quantities according to the actual situation.

[0049] The valve seat end face grinding mechanism 4 includes a first motor 41. The first motor 41 drives a transverse slide 42. A first slide rail 43 is arranged at the top of the transverse slide 42. A moving slide 44 is connected to the top of the first slide rail 43. A second motor 45 is arranged on one side of the top of the moving slide 44. The second motor 45 is matched and connected to a lifting slide 46. A bracket 47 is detachably connected to the side of the lifting slide 46. An adjusting ring 48 is inserted into the top of the bracket 47. The valve seat is inserted into the adjusting ring 48. A first counterweight 49 can be erected on the top of the valve seat.

[0050] Multiple first counterweights 49 can be erected according to needs, and their shapes can also be specifically set according to needs, as long as they can increase the pressure on the end face of the valve seat.

[0051] The forms of the flat valve seats of the mechanical parts accessories vary. In the process of realizing automatic intelligent grinding, a reliable clamping tool is needed. The end face grinding mechanism 4 of the valve seat realizes functions such as stable clamping of the valve seat end face during the grinding process, adaptively changing the height of the valve seat during the grinding process, and automatically controlling the trajectory of the valve seat during the grinding process, effectively solving the technical problems of intelligent grinding of the flat valve seat.

[0052] In this device, the first motor 41 can drive the transverse slide 42 to move back and forth. The moving slide 44 can adjust the left and right positions. The moving slide 44 is connected to the transverse slide 42 through a slide rail. The transverse slide 42 can reciprocate on the moving slide 44 to eliminate grinding marks, which is a common existing technology.

[0053] During operation, place the valve seat in the adjusting ring 48, then put the adjusting ring 48 into the bracket 47, and place a counterweight on the top to grind the end face of the valve seat. When placing the adjusting ring 48 in the bracket 47, place a counterweight on the top, and bring the side to be ground close to the annular grinding disc 3. The lifting slide 46 is used to adjust the positional relationship between the valve seat and the grinding disc in the vertical direction when the grinding disc wears and the valve housing to be ground has different heights and thicknesses due to different specifications.

[0054] The middle part of the bracket 47 is provided with an annular hole. The annular hole is provided with surface A and surface B. The adjusting ring 48 is provided with surface C, surface D, surface E, and surface F. The surface A of the bracket 47 supports the end face of the surface C of the adjusting ring 48. The small plane of the surface B of the bracket 47 cooperates with the small plane of the surface D of the adjusting ring 48 to prevent the adjusting ring 48 from rotating. The surface E of the adjusting ring 48 cooperates with the two struts of the valve housing to prevent the valve seat from rotating.

[0055] Because there are various specifications of the valve seat, with different outer diameters and heights, there are multiple specifications. For this situation, an adjusting ring 48 is designed to correspond to different valve seats.

[0056] The water absorption device 5 includes a water collecting cover 51. The top of the water collecting cover 51 is connected to a negative pressure suction pipe. The water collecting cover 51 is connected to the valve cover plate grinding mechanism 6 by screws. The water absorption device 5 can absorb and remove the water stains on the grinding disc during the cleaning process. The bottom of the water collecting cover 51 is hollow. When the negative pressure suction pipe works, it will suck away the water stains on the surface of the annular grinding disc.

[0057] The valve flap grinding mechanism 6 includes a servo motor 61. The servo motor 61 is connected to a sliding support plate 62 through a rotating lead screw. The top of the sliding support plate 62 is connected to a sliding column 63. The top of the sliding column 63 is provided with a first lifting electric cylinder 64. The bottom of the first lifting electric cylinder 64 is connected to a lifting baffle 65. An arc-shaped groove is arranged outside the lifting baffle 65. An arc-shaped positioning groove 66 is opened at the front end of the arc-shaped groove. The arc-shaped positioning groove 66 is detachably connected to a driven wheel 67. A rotating motor is arranged at the top of the rear end of the arc-shaped groove. The bottom of the rotating motor passes through the lifting baffle 65 and is connected to a driving retaining ring 68. The driving retaining ring 68, the driven wheel 67 and a working ring 69 are matched with each other. A spacer ring 691 is arranged inside the working ring 69. A valve flap is placed in the middle of the spacer ring 691. The top of the valve flap is matched and connected to a second counterweight 692. The working ring 69 is electrically connected to the grinding disk flatness detection device 7 for repairing the flatness of the annular grinding disk.

[0058] The valve flap grinding mechanism 6 can perform grinding operations on the valve flap. When the device works, the valve flap is passed through the second counterweight 692 by a pin shaft and placed in the middle of the working ring 69, and the position is kept unchanged by the spacer ring 691. During grinding, the annular grinding disk rotates, and the driving retaining ring 68 rotates under the action of the rotating motor. In this way, the working ring 69 rotates in place under the combined action of the annular grinding disk 3 and the driving retaining ring 68, and the valve flap in the working ring 69 also rotates in place, thereby realizing the grinding of the valve flap.

[0059] The grinding disk flatness detection device 7 includes a connecting bottom plate 71. A standard flatness platform 72 is detachably connected to the top surface of the connecting bottom plate 71. A support plate 73 is arranged on the side of the standard flatness platform 72. The top of the support plate 73 is connected to a transverse moving table 74. A transverse slide rail 75 is connected to the side of the transverse moving table 74. The transverse slide rail 75 is slidably connected to a moving bracket 76 through a slider. A second lifting electric cylinder 77 is arranged on the moving bracket 76. An electronic micrometer is connected to the bottom of the second lifting electric cylinder 77. A water pattern camera 78 is arranged at the external connection of the transverse moving table 74. A portal lighting frame 79 is detachably connected to the connecting bottom plate 71 at the bottom of the water pattern camera 78. A temperature sensor 791 is arranged outside the transverse moving table 74. A laser rangefinder 792 is arranged on the side of the water pattern camera 78.

[0060] This device can adapt to different grinding discs for flatness measurement operations, especially annular grinding discs. During the flatness measurement of the annular grinding disc 3, it can rotate at a certain angle, so as to evenly measure the flatness of the entire grinding disc. When this device works, place the grinding disc on one side of the connecting base plate 71, and the electronic micrometer descends to contact the already zeroed standard flatness platform 72, thereby obtaining the evaluation reference plane. At this time, the second lifting cylinder 77 drives the electronic micrometer to rise, and then moves outward through the transverse slide rail 75. When it moves to the top of the grinding disc to be measured, the second lifting cylinder 77 slowly descends, so as to contact the electronic micrometer with the grinding disc and measure the flatness of the grinding disc. After measuring one place, the grinding disc rotates a certain angle and is measured again, so as to complete the determination of the flatness of the entire grinding disc. Subsequently, use the working ring 69 to grind the grinding disc to make it reach the flatness we need;

[0061] The grinding and correction process is as follows. After the electronic micrometer contacts the annular grinding disc and measures the flatness of the annular grinding disc, the grinding operation is carried out. For example, if the flatness meets the requirements <±2μm, the grinding work can be carried out; otherwise, the disc repair work must be carried out. A negative number indicates a concave disc, and a positive number indicates a convex disc.

[0062] The valve cover plate grinding mechanism 6 can grind the valve cover plate. After receiving the working signal from the electronic micrometer, its working ring 69 can move left and right on the annular grinding disc, so as to grind the flatness of the annular grinding disc within the preset value.

[0063] When the valve cover plate and the counterweight block are placed in the working ring 69, the valve cover plate grinding work is carried out. After receiving the disc repair signal from the electronic micrometer, the lifting baffle 65 makes the driven wheel 67 drive the driving retaining ring 68 to push the working ring towards the center of the grinding disc. When approaching, the convex disc repair work is carried out. When the lifting baffle 65 makes the driven wheel 67 drive the driving retaining ring 68 to drag the working ring away from the center of the grinding disc, the concave disc repair work is carried out.

[0064] It should be noted that this device can be used alone to detect the flatness of different grinding discs, or it can be used in combination with other devices to automatically detect the flatness of the grinding disc and transmit the detected data to the grinding disc correction device. The grinding disc correction device moves on the grinding disc according to the obtained data, so as to make the grinding disc reach the required flatness.

[0065] The water pattern camera 78 can identify the grinding fluid on the top of the grinding disc to determine the dryness and humidity of the grinding disc.

[0066] The gantry lighting frame 79 is detachably connected to the connecting base plate 71 at the bottom of the water pattern camera 78. The gantry lighting frame provides lighting and, in cooperation with the water pattern camera 78, detects the dryness and humidity of the grinding disc.

[0067] A temperature sensor 791 is used to detect the temperature of the surface of the polishing pad, preventing the polishing pad from overheating during the process of correcting the polishing pad, because excessive temperature of the polishing pad will cause deformation.

[0068] A water pattern camera 78 is provided with a laser rangefinder 792 on its side. The laser rangefinder 792 can detect the thickness of the bottom polishing pad. When the polishing pad is corrected after long-term use, its thickness will decrease, and the height of the corresponding equipment on the side of the polishing pad needs to be adjusted accordingly. At the same time, it can also issue an alarm when the thickness of the polishing pad is too low or reaches a preset value, reminding to replace the polishing pad.

[0069] The grinding fluid spraying device 8 includes a magnetic stirring device 81. A grinding fluid placement cylinder 82 is placed on the top of the magnetic stirring device 81. The grinding fluid placement cylinder 82 is connected to an atomizing nozzle 83 through a grinding fluid delivery pipe. The side of the atomizing nozzle 83 is connected to a compressed air pipeline 84. The atomizing nozzle 83 and the compressed air pipeline 84 are connected by an L-shaped bracket 85. The magnetic stirring device 81 can perform a stirring operation on the grinding fluid. When the annular polishing pad 3 starts to operate, the atomizing nozzle 83 cooperates with the compressed air pipeline 84 to perform a liquid spraying operation on the top of the annular polishing pad 3.

[0070] The cleaning mechanism 9 includes a support frame 91. The side of the support frame 91 is connected to a concave plate 92. Multiple lifting columns 93 are connected to the top of the concave plate 92. A lifting motor 94 is connected to the top of the lifting columns 93. The bottom of the lifting motor 94 is connected to a lifting plate 95. The lifting plate 95 is slidably connected to the lifting columns 93. A third rotating motor 96 is provided on the top of the lifting plate 95. The bottom of the third rotating motor 96 is connected to a cleaning brush 97. The cleaning mechanism 9 can clean the top of the annular polishing pad 3. During operation, the lifting motor 94 drives the cleaning brush 97 to an appropriate height, and the third rotating motor 96 drives the cleaning brush 97 to perform a cleaning operation on the annular polishing pad 3. Each device of this device can be adjusted in height in cooperation with the thickness of the polishing pad.

[0071] The above embodiments only represent a certain implementation manner of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A fully automatic valve grinding machine, characterized in that: It includes a workbench (1), on which a protective housing (2) is provided. In the middle of the top surface of the workbench (1), a rotating mechanism is provided, and the top of the rotating mechanism is connected to an annular grinding disc (3). On one side of the annular grinding disc (3), a valve seat end face grinding mechanism (4) is provided. On the side of the valve seat end face grinding mechanism (4), a water absorption device (5) is provided. On the side of the water absorption device (5), a valve cover plate grinding mechanism (6) is provided. On the side of the valve cover plate grinding mechanism (6), a grinding disc flatness detection device (7) is provided. On the other side of the annular grinding disc (3), a grinding fluid spraying device (8) and a cleaning mechanism (9) are provided; The valve seat end face grinding mechanism (4) includes a first motor (41), the first motor (41) drives a transverse slide (42), on the top of the transverse slide (42), a first slide rail (43) is provided, the top of the first slide rail (43) is connected to a moving slide (44), on one side of the top of the moving slide (44), a second motor (45) is provided, the second motor (45) is connected to a lifting slide (46) in a matching manner, on the side of the lifting slide (46), a bracket (47) is detachably connected, on the top of the bracket (47), an adjusting ring (48) is inserted, the adjusting ring (48) is inserted into the valve housing, and a first counterweight (49) can be mounted on the top of the valve housing; An annular hole is opened in the middle of the bracket (47), and an A surface and a B surface are provided in the annular hole. In the adjusting ring (48), a C surface, a D surface, an E surface, and an F surface are provided. The A surface of the bracket (47) supports the end face of the C surface of the adjusting ring (48), and the small plane of the B surface of the bracket (47) cooperates with the small plane of the D surface of the adjusting ring (48) to prevent the adjusting ring (48) from rotating. The E surface of the adjusting ring (48) cooperates with two struts of the valve housing to prevent the valve housing from rotating; The valve cover plate grinding mechanism (6) includes a servo motor (61), the servo motor (61) is connected to a sliding support plate (62) through a rotating lead screw in a matching manner, on the top of the sliding support plate (62), a sliding column (63) is connected, on the top of the sliding column (63), a first lifting electric cylinder (64) is provided, the bottom of the first lifting electric cylinder (64) is connected to a lifting baffle (65), an arc-shaped groove is arranged outside the lifting baffle (65), an arc-shaped positioning groove (66) is opened at the front end of the arc-shaped groove, the arc-shaped positioning groove (66) is detachably connected to a driven wheel (67), at the top of the rear end of the arc-shaped groove, a rotating motor is provided, the bottom of the rotating motor passes through the lifting baffle (65) and is connected to a driving retaining ring (68), the driving retaining ring (68), the driven wheel (67) and a working ring (69) are matched, a spacer ring (691) is arranged in the working ring (69), a valve cover plate is arranged in the middle of the spacer ring (691), a second counterweight (692) is connected to the top of the valve cover plate in a matching manner, and the valve cover plate grinding mechanism (6) is electrically connected to the grinding disc flatness detection device (7) and can repair the flatness of the annular grinding disc after receiving a disc repair signal; The flatness detection device (7) of the grinding disc includes a connecting bottom plate (71). The top surface of the connecting bottom plate (71) is detachably connected to a standard flatness platform (72). A support plate (73) is provided on the side of the standard flatness platform (72). The top of the support plate (73) is connected to a lateral moving platform (74). A lateral slide rail (75) is connected to the side of the lateral moving platform (74). The lateral slide rail (75) is slidably connected to a moving bracket (76) through a slider. A second lifting electric cylinder (77) is provided on the moving bracket (76). The bottom of the second lifting electric cylinder (77) is connected to an electronic micrometer. A water pattern camera (78) is provided at the external connection of the lateral moving platform (74). A gantry lighting frame (79) is detachably connected to the connecting bottom plate (71) at the bottom of the water pattern camera (78). A temperature sensor (791) is provided outside the lateral moving platform (74). A laser rangefinder (792) is provided on the side of the water pattern camera (78).

2. The fully automatic valve grinding machine according to claim 1, characterized in that: The water absorption device (5) includes a water collection cover (51). The top of the water collection cover (51) is connected to a negative pressure suction pipe. The water collection cover (51) is connected to the valve cover plate grinding mechanism (6) by screws.

3. The fully automatic valve grinding machine according to claim 1, characterized in that: The grinding fluid spraying device (8) includes a magnetic stirring device (81). A grinding fluid placement cylinder (82) is placed on the top of the magnetic stirring device (81). The grinding fluid placement cylinder (82) is connected to an atomizing nozzle (83) through a grinding fluid delivery pipe. A compressed air pipeline (84) is connected to the side of the atomizing nozzle (83). The atomizing nozzle (83) and the compressed air pipeline (84) are supported by an L-shaped bracket (85).

4. The fully automatic valve grinding machine according to claim 1, wherein: The cleaning mechanism (9) includes a support frame (91). A concave plate (92) is connected to the side of the support frame (91). A plurality of lifting columns (93) are connected to the top of the concave plate (92). A lifting motor (94) is connected to the top of the lifting columns (93). The bottom of the lifting motor (94) is connected to a lifting plate (95). The lifting plate (95) is slidably connected to the lifting columns (93). A third rotating motor (96) is provided on the top of the lifting plate (95). The bottom of the third rotating motor (96) is connected to a cleaning brush (97).

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