A valve seat processing device and processing method for valve inner valve

Abstract

The present invention discloses a valve seat processing device and processing method. The device includes a first driving mechanism, an inclined guide rail and a driving connection mechanism. The driving connection mechanism includes a flat rotating disk, a mounting seat, a gear box, a second driving mechanism and a third driving mechanism. A main shaft is arranged in the mounting seat. The flat rotating disk includes a rotating disk, a slide screw and a first transmission mechanism. The processing tool includes a tool holder and a blade. A second transmission mechanism is arranged in the gear box. Under the drive of the third driving mechanism, the main shaft rotates to drive the flat rotating disk to rotate, and then drives the processing tool to rotate. Under the drive of the first driving mechanism, the processing tool enters the valve opening to be processed and moves linearly until the blade is located in the valve seat. Under the drive of the second driving mechanism, the first transmission mechanism drives the screw to rotate to drive the slide to move along its length direction until the blade contacts the surface of the valve seat to process it. The processing device provided by the present invention improves processing efficiency, reduces labor intensity, and reduces angle errors.

Description

Technical Field

[0001] The invention relates to the field of mechanical manufacturing, and in particular to a valve inner valve seat machining device and a machining method. Background Art

[0002] At present, the valve seat of pipeline gate valve is usually processed by turning with a general lathe in combination with a ramp plate tooling. This processing method has low processing accuracy because the machine tool and the ramp plate need to be repeatedly positioned. In addition, the ramp plate and the valve are both special-shaped parts, and the center of mass and the center of rotation do not coincide, so the rotation speed cannot be too fast during the processing, otherwise it is not safe, resulting in extremely low processing efficiency. Summary of the invention

[0003] In order to solve the problems of the prior art, the present invention provides a valve seat processing device and a processing method to improve the processing accuracy and production efficiency. The technical solution is as follows:

[0004] On the one hand, the present invention provides a valve seat processing device for processing the inside of a valve to obtain a valve seat, wherein the valve has an opening, and comprises a first drive mechanism, an inclined guide rail, and a drive connection mechanism arranged on the inclined guide rail, wherein the drive connection mechanism comprises a flat rotating disk, a mounting seat, a gear box, a second drive mechanism, and a third drive mechanism, wherein the mounting seat is arranged between the flat rotating disk and the gear box, and the valve is arranged on a side of the flat rotating disk away from the mounting seat;

[0005] The mounting seat is provided with a main shaft fixedly connected to the flat rotating disk, the flat rotating disk comprises a rotating disk, a slide plate arranged outside the rotating disk, and a screw rod and a first transmission mechanism arranged inside the rotating disk, the slide plate and the screw rod are arranged in parallel and connected by a connecting piece;

[0006] A machining tool fixedly connected to the slide is arranged at one end of the flat rotating disk close to the valve, the machining tool comprising a tool holder and a blade arranged on the tool holder, the blade protruding out of the tool holder; a second transmission mechanism is arranged in the gear box, the second transmission mechanism is connected to the first transmission mechanism through a rotating shaft, the rotating shaft is arranged in the main shaft and coaxially with the main shaft;

[0007] Under the drive of the third driving mechanism, the rotation of the spindle drives the flat rotating disk to rotate, thereby driving the machining tool to rotate;

[0008] Under the drive of the first driving mechanism, the rotating machining tool enters the opening of the valve to be machined and moves linearly, so that the blade faces the valve seat to be machined;

[0009] Driven by the second driving mechanism, the second transmission mechanism drives the first transmission mechanism, and the first transmission mechanism drives the screw to rotate, so as to drive the slide plate to move along its length direction, and then drive the processing tool toward the valve seat to move along the length direction of the slide plate until the blade contacts the surface of the valve seat to process it.

[0010] Furthermore, the machining tool also includes a fixed seat connected to the slide plate and a tool rod connected to the fixed seat, and the tool seat is arranged at an end of the tool rod away from the flat rotating disk.

[0011] Furthermore, the knife seat includes a plurality of circumferentially distributed knife carrying portions, each of which is provided with a knife blade.

[0012] Furthermore, the connecting member is a nut sleeved on the screw rod. Under the drive of the second driving mechanism, the second transmission mechanism drives the first transmission mechanism, the first transmission mechanism drives the screw rod to rotate, and the rotation of the screw rod drives the nut to move along the length direction of the screw rod, thereby driving the slide plate to move along its length direction.

[0013] Furthermore, the first transmission mechanism includes a first gear and a second gear, the first gear is sleeved on the screw rod, the second gear is sleeved on the rotating shaft, and the first gear is transmission-matched with the second gear.

[0014] Furthermore, the number of the inclined guide rails is two, the number of the drive connection mechanisms is two, the two inclined guide rails are arranged opposite to each other, and the valve is arranged between the two inclined guide rails.

[0015] Furthermore, the second transmission mechanism includes a plurality of gears that cooperate with each other.

[0016] Furthermore, the machining tool can be detachably arranged on the slide plate, and the blade can be detachably arranged on the tool holder.

[0017] Furthermore, the valve seat has a first surface and a second surface arranged adjacent to each other, and the blade cuts the first surface of the valve seat to be processed to obtain the first surface, and cuts the second surface of the valve seat to be processed to obtain the second surface.

[0018] On the other hand, the present invention also provides a processing method based on the valve inner valve seat processing device, which comprises the following steps:

[0019] S1. Fix the valve on one side of the machining tool;

[0020] S2, using the third driving mechanism to drive the flat rotating disk to rotate, thereby driving the processing tool to rotate;

[0021] S3, using the first driving mechanism to drive the rotating machining tool to enter the opening of the valve to be machined to make a linear motion, so that the blade faces the valve seat to be machined; then using the second driving mechanism to drive the screw rod to rotate to drive the machining tool located in the valve to move along the length direction of the slide plate until the blade contacts the surface of the valve seat, so as to machine the surface of the valve seat;

[0022] S4. After the processing is completed, the first driving mechanism is used to provide a backward driving force to move the driving connection mechanism as a whole backward until the processing tool is withdrawn from the opening of the valve.

[0023] The beneficial effects brought by the technical solution provided by the present invention are as follows:

[0024] a. The valve seat processing device provided by the present invention has a processing efficiency that is 4-6 times higher than that of the general processing method; the angle error is reduced to within 10 / 1000, the processing accuracy is high, and it is two levels higher than the existing processing technology;

[0025] b. The valve seat processing device provided by the present invention can conveniently process valves of various specifications, and the processing device has universality;

[0026] c. Realize automated production, fast processing speed, high production efficiency; reduce labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is a three-dimensional diagram of a valve seat processing device provided by an embodiment of the present invention;

[0029] Figure 2 is a three-dimensional diagram of a driving connection mechanism of a valve seat processing device provided in an embodiment of the present invention;

[0030] Figure 3 is a top view of a valve seat processing device provided in an embodiment of the present invention;

[0031] Figure 4 It is a three-dimensional diagram of a flat rotating disk of a valve seat processing device provided in an embodiment of the present invention;

[0032] Figure 5 It is a side view of a flat rotating disk of a valve seat processing device provided by an embodiment of the present invention;

[0033] Figure 6It is a three-dimensional diagram of a machining tool and a horizontal rotating disk of a valve seat machining device provided by an embodiment of the present invention;

[0034] Figure 7 is a cross-sectional view of a valve provided by an embodiment of the present invention;

[0035] Figure 8 is a half-section stereoscopic view of a valve provided by an embodiment of the present invention;

[0036] Fig. 9 is a cross-sectional view of a blade of a valve seat processing device in a valve provided by an embodiment of the present invention in conflict with the valve seat surface;

[0037] Fig.10 The valve seat processing device provided by the embodiment of the present invention is Fig. 9 Enlarged view of the middle blade interfering with the valve seat surface.

[0038] Among them, the figure marks include: 1-valve, 11-first surface, 12-second surface, 2-inclined guide rail, 3-rotating plate, 31-rotating plate, 32-slide plate, 33-screw, 34-nut, 35-bearing seat, 36-first gear, 37-second gear, 4-mounting seat, 5-gear box, 6-second driving mechanism, 7-third driving mechanism, 8-machining tool, 81-tool seat, 82-blade, 83-fixed seat, 84-tool rod, 9-tooling. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, device, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0041] The processing object of the valve seat processing device provided by the present invention is a workpiece with an opening, and the workpiece is a valve. The valve has two through first openings and a second opening and a third opening that intersects or is perpendicular to the first opening and the second opening (the center line of the first opening and the center line of the second opening coincide with each other). The knife seat enters the valve seat from the first opening or the second opening. The valve is provided with a valve seat, and a sealing ring is installed on the valve seat. The surface of the valve seat is a processing surface. During the processing, the valve is fixedly arranged on a machine tool. The structure of the valve is shown in FIG. Figure 7 and Figure 8 .

[0042] The present invention provides a valve inner valve seat processing device for processing the outer wall of the valve inner valve seat (for specific structure, see Figure 1 It includes a first driving mechanism, an inclined guide rail 2 and a driving connection mechanism arranged on the inclined guide rail 2. A valve 1 is arranged on one side of the driving connection mechanism. The inclined guide rail 2 is inclined to maintain an angle with the horizontal plane. The length direction (extension direction) of the inclined guide rail 2 is parallel to the center line of the first opening and the second opening of the valve seat. Because the center line of the valve seat on the valve maintains an angle with the horizontal plane, a special inclined guide rail is used to make the feed direction of the valve seat processing device inside the valve coincide with the axis of the valve seat inside the valve to improve the processing accuracy.

[0043] Driven by the first driving mechanism, the driving connection mechanism moves along the length direction of the inclined guide rail 2 to approach or move away from the valve. When moving close to the valve, the rotating processing tool enters the first opening or the second opening of the valve to be processed and performs linear motion. Since the inclined guide rail 2 is inclined, the moving direction of the driving connection mechanism is parallel to the length direction of the inclined guide rail 2, and the moving direction of the driving connection mechanism also maintains an angle with the horizontal plane. The first driving mechanism is a motor, and a drag chain is arranged on the side of the inclined guide rail 2. The motor drives the drag chain to move, thereby driving the driving connection mechanism to move.

[0044] The specific structure of the drive connection mechanism is as follows: Figure 1 , Figure 2 and Figure 3 The driving connection mechanism includes a flat rotating disk 3, a mounting seat 4, a gear box 5, a second driving mechanism 6 and a third driving mechanism 7. The mounting seat 4 is arranged between the flat rotating disk 3 and the gear box 5, and the valve 1 is arranged on a side of the flat rotating disk 3 away from the mounting seat 4.

[0045] The specific structure of the mounting base 4 is as follows: the mounting base 4 includes a shell and a spindle arranged in the shell, the spindle is fixedly connected to the flat rotating disk 3, and under the drive of the third driving mechanism 7, the rotation of the spindle drives the flat rotating disk 3 to rotate, and then drives the processing tool 8 to rotate. The third driving mechanism 7 is preferably a motor.

[0046] The specific structure of the flat rotating disk 3 is as follows: Figure 4 and Figure 5 The flat rotating disk 3 includes a rotating disk 31, a slide plate 32 arranged on the outside of the rotating disk 31, a screw rod 33 and a first transmission mechanism arranged inside the rotating disk 31. The slide plate 32 and the screw rod 33 are arranged in parallel and are connected by a connecting piece. The connecting piece is a nut 34 sleeved on the screw rod 33. The vertical section of the rotating disk 31 facing the processing tool is preferably a waist-shaped round hole.

[0047] The specific structure of the first transmission mechanism is as follows: the first transmission mechanism includes a first gear 36 and a second gear 37 , the first gear 36 is sleeved on the screw rod 33 , the second gear 37 is sleeved on the rotating shaft, and the first gear 36 and the second gear 37 are in transmission cooperation.

[0048] The specific structure of the gear box 5 is as follows: a second transmission mechanism is arranged in the gear box 5, and the second transmission mechanism is connected to the first transmission mechanism through a rotating shaft, and the rotating shaft is arranged in the main shaft and coaxially with the main shaft; the second transmission mechanism is a gear set composed of a plurality of matching gears. The gears in the gear box are first changed in speed, and then transmitted to the gears in the flat rotating disk through the rotating shaft. The second driving machine and the third driving mechanism are preferably servo motors, which provide source power for the entire cutting process. The gear train of the first transmission mechanism and the gear train of the second transmission mechanism adjust the power provided by the servo motor to the most suitable size and speed for cutting (that is, the rotation speed of the blade can be adjusted), so that the cutting force is more stable.

[0049] The specific structure of the machining tool is as follows: Figure 1 and Figure 6 , the end of the flat rotating disk 3 close to the valve is provided with a processing tool 8 fixedly connected to the slide 32, the processing tool 8 includes a fixed seat 83 connected to the slide 32, a tool rod 84 connected to the fixed seat 83, a tool holder 81 arranged at the end of the tool holder 84 away from the fixed seat 83, and a blade 82 arranged on the tool holder 81, the blade 82 protrudes from the tool holder 81 so as to be able to contact the surface of the valve seat to be processed; the tool holder includes a plurality of circumferentially distributed tool carriers, each of which is provided with a blade, the blade 82 protrudes from the tool carrier toward the surface of the valve seat to be processed, and the blade 82 is detachably arranged on the tool carrier. Blades of various shapes can be embedded in the tool holder, so that different processing surfaces can be processed in the entire processing process and processed according to different precision requirements. Because the corresponding blades can be selected for different processes, the blades are detachable and there is no need to replace the entire tool holder, the processing tool plays a great role in improving processing efficiency and extending tool life.

[0050] The fixed seat 83 is preferably arranged at the center of the rotating disk 31. When the knife seat enters the valve, the knife seat 81 is coaxially arranged with the valve seat in the valve 1 (in addition, the knife seat 81 and the valve seat in the valve 1 can also be non-coaxially arranged). When the knife is sharpened, the knife seat 81 and the valve seat in the valve 1 are not coaxially arranged.

[0051] Preferably, the machining tool can be detachably arranged on the slide plate 32 of the flat rotating disk 3, and the blade can be detachably arranged on the blade seat, so that the required machining tool or blade can be replaced according to different machining requirements of the workpiece to be machined.

[0052] The specific implementation of the sliding plate 32 being able to move is as follows: Figure 4 and Figure 5 A bearing seat 35 for fixing the screw is provided on the side of the screw away from the second gear 37. The connecting piece is a nut 34 sleeved on the screw 33. Under the drive of the second driving mechanism, the second transmission mechanism drives the first transmission mechanism, so that the first transmission mechanism drives the screw 33 to rotate (the rotary motion can be converted into linear motion, and the screw has threads outside). The rotation of the screw 33 drives the nut 34 to move along the length direction of the screw 33, and then drives the slide plate 32 to move along its length direction. Its length direction is the length direction of the slide plate. The slide plate is arranged parallel to the screw. Figure 1 As shown, the vertical section of the rotating disk 31 toward the processing tool and the vertical section away from the processing tool are preferably circular. When the slide plate moves, the center of the slide plate moves away from the center of the rotating disk 31, and can further drive the rotating processing tool to move along the circumference of the valve seat (circular motion with the center of the valve seat as the center of the circle).

[0053] Further explanation of the circumferential movement of the machining tool along the valve seat is as follows: when the main shaft drives the flat disc to rotate, and at the same time the second driving mechanism drives the slide plate 32 to move along its length direction (X-axis direction, left and right direction, i.e. horizontal direction), it is equivalent to the machining tool moving along the circumference of the valve seat (with the center of the valve seat as the center of the circle and the straight line extending from the center of the circle as the diameter). During the machining process, the machining tool rotates (i.e. rotates) under the rotation of the flat disc, and moves along its length direction driven by the slide plate 32, which is equivalent to the machining tool moving along the circumferential direction of the valve seat. The machining tool can contact the surface of the valve seat and move a full circle along its surface (i.e., it can revolve).

[0054] Valves have various specifications, and the shapes and sizes of valve seats in different valves are different. The existing processing tools are coaxial with the valves, and can only process valve seats of one specification. In the processing device provided by the present invention, the blade 82 processes the valve seat in an eccentric process. By adjusting the distance that the slide moves along its length direction, the blade is in contact with the surface of the valve seat to be processed, so as to adjust the distance that the processing tool moves along the circumferential direction of the valve seat, and then it is convenient to process valves of various specifications, so that the processing device provided by the present application has universality. During the processing, the sharpening tool contacts the surface of the valve seat to be processed, and the rotation speed can be accelerated and safe, with high production efficiency.

[0055] The reason for setting the second drive mechanism and the third drive mechanism in the processing equipment provided in the present application is that the boring resistance is large and the speed is slow, and the third drive mechanism is required to drive the flat rotating disk to rotate to drive the processing tool to rotate. In addition, the second drive mechanism is required to drive the slide to move and then drive the blade to contact the valve seat surface for processing, so as to increase the driving force and thereby improve the processing efficiency.

[0056] In an embodiment provided by the present invention, the number of inclined guide rails 2 is two, the number of drive connection mechanisms is two, the two inclined guide rails 2 are relatively arranged, and the valve is arranged between the two inclined guide rails 2. Since two relatively arranged valve seats are arranged in the valve, two drive connection mechanisms are arranged, so that the surfaces to be processed of the two valve seats on the valve can be processed simultaneously, thereby greatly improving production efficiency.

[0057] The valve seat processing device also includes a tool 9 for placing the valve, which is used to quickly fix the valve and facilitate the installation and uninstallation of the valve.

[0058] The processing equipment provided by the present application realizes production automation by using a programmable control special machine tool according to the processing technology of the parts. The conversion control is carried out by collecting signals through the limit switch, which has strong anti-interference ability, high reliability, and is easy to use and maintain. The overall design adopts manual and automatic cycles, and the manual and automatic cycles are interlocked.

[0059] The present invention also provides a method for machining an inner valve seat of a valve using the inner valve seat machining device of the valve, which comprises the following steps:

[0060] S1. Fix the valve on one side of the machining tool of the valve seat machining device inside the valve, that is, fix the valve on the tooling;

[0061] S2. Before the machining tool enters the valve to be machined, the third driving mechanism is used to drive the flat rotating disk to rotate, thereby driving the machining tool to rotate;

[0062] S3. Driven by the first driving mechanism, the driving connecting mechanism moves toward the direction of the valve to be processed, so that the rotating processing tool enters the first opening or the second opening of the valve to be processed and moves linearly until the blade is located at the specified position in the valve seat (the blade faces the valve seat to be processed), and then the second driving mechanism drives the screw rod to rotate to drive the processing tool located in the valve to move along the length direction of the slide until the blade contacts the surface of the valve (during this process, the mounting seat and the gear box will not change in displacement, the rotating disk keeps rotating, and the processing tool moves along the surface of the valve seat while rotating) to perform boring processing on the surface of the valve seat. During processing, the processing tool can move along the surface of the valve seat multiple times (one time represents one circle); during processing, the tool seat and the valve seat are not coaxial; the specified position refers to the position after reaching which the second driving mechanism drives the screw rod to rotate to drive the processing tool located in the valve to move along the length direction of the slide, and the blade can contact the surface of the valve; during processing, driven by the first driving mechanism, the driving connecting mechanism retreats along the length direction of the inclined guide rail, so that the blade always keeps in contact with the surface of the valve seat; during processing, only one blade is needed to process the surface of the valve seat;

[0063] S4. After the processing is completed, the first driving mechanism is used to provide a backward driving force to move the driving connection mechanism backward as a whole until the processing tool is withdrawn from the opening of the valve and the slide returns to its original position.

[0064] In one embodiment provided by the present invention, the valve seat has a first surface and a second surface arranged adjacent to each other, and the blade 82 cuts the first surface of the valve seat to be processed to obtain a first surface (circular surface), and cuts the second surface of the valve seat to be processed to obtain a second surface (annular surface). The blade processes the surface of the valve seat in a line process.

[0065] The present invention also provides a method for machining an inner valve seat of a valve using the inner valve seat machining device of the valve, which comprises the following steps:

[0066] S1. Fix the valve on one side of the machining tool;

[0067] S2, using the third driving mechanism to drive the flat rotating disk to rotate, thereby driving the processing tool to rotate;

[0068] S3, using the first driving mechanism to drive the rotating machining tool to enter the first opening or the second opening of the valve to be machined to make a linear motion ( Figure 8The direction indicated by the middle arrow is the entry direction), so that the blade faces the valve seat to be processed; then the second driving mechanism is used to drive the screw rod to rotate to drive the processing tool located in the valve to move along the length direction of the slide plate until the blade contacts the first surface of the valve seat, so as to process the first surface of the valve seat to obtain an arc-shaped or circle-shaped first surface 11. During the processing, the driving connection mechanism will move along the length direction of the inclined guide rail (the knife seat enters the valve seat from the first opening or the second opening) to ensure that the blade is always in contact with the first surface of the valve seat;

[0069] S4. After the first surface is processed, the second driving mechanism is used to drive the screw to rotate so as to drive the processing tool in the valve to move along the length direction of the slide plate until the blade contacts the second surface of the valve seat, so as to process the second surface of the valve seat to obtain a circular ring-shaped second surface 12 (the second surface is a plane, a circular ring surface with a center hole). The first surface and the second surface are arranged adjacent to each other. During the processing, the second driving mechanism can be used to drive the screw to rotate so as to drive the processing tool in the valve to move along the length direction of the slide plate, so that the blade always keeps in contact with the second surface of the valve seat.

[0070] S5. After the processing is completed, the first driving mechanism is used to provide a backward driving force to move the driving connection mechanism as a whole backward until the processing tool is withdrawn from the opening of the valve.

[0071] The valve seat processing device provided by the present invention greatly improves the processing efficiency, which is 4-6 times higher than that of the general processing method; the direction of the linear motion of the driving connection mechanism is perpendicular to the plane where the blade is located (that is, the plane formed by the rotation of the blade), that is, the blade is guaranteed to make a circular motion along the valve seat, and the blade will not tilt or deviate, so as to ensure the processing accuracy; after the valve seat surface is processed, its surface is smooth and uniform, and the processing allowance is reduced for the subsequent grinding process; the angle error is reduced, and the angle error (the angle is indicated by a in the figure, a is the angle between the connecting line on one side of the processing surface and the center line of the valve, and the angle is measured by a special measuring tool) is within ten thousandths, and the processing accuracy is high. If the angle error is large, when the sealing ring and other annular components are installed on the valve seat in the subsequent process, the sealing ring and the annular component cannot be completely fitted with the valve seat, so liquid leakage will occur in the subsequent use; compared with the existing processing technology, it is improved by two levels; automated production is realized, and the rotation speed can be accelerated and safe during the processing, and the production efficiency is high.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve seat processing device for processing the inside of a valve (1) to obtain a valve seat, wherein the valve (1) has an opening, It is characterized in that The invention comprises a first driving mechanism, an inclined guide rail (2), and a driving connection mechanism arranged on the inclined guide rail (2), wherein the driving connection mechanism comprises a flat rotating disk (3), a mounting seat (4), a gear box (5), a second driving mechanism (6), and a third driving mechanism (7), wherein the mounting seat (4) is arranged between the flat rotating disk (3) and the gear box (5), and the valve (1) is arranged on a side of the flat rotating disk (3) away from the mounting seat (4); A main shaft fixedly connected to the flat rotating disk (3) is provided in the mounting seat (4); the flat rotating disk (3) comprises a rotating disk (31), a slide plate (32) arranged outside the rotating disk (31), a screw rod (33) and a first transmission mechanism arranged inside the rotating disk (31); the slide plate (32) and the screw rod (33) are arranged in parallel and are connected via a connecting piece; A machining tool (8) fixedly connected to the slide plate (32) is arranged at one end of the flat rotating disk (3) close to the valve (1), the machining tool (8) comprising a tool holder (81) and a blade (82) arranged on the tool holder (81), the blade (82) protruding out of the tool holder (81); a second transmission mechanism is arranged in the gear box (5), the second transmission mechanism is connected to the first transmission mechanism via a rotating shaft, the rotating shaft is arranged in the main shaft and is coaxial with the main shaft; Under the drive of the third driving mechanism (7), the main shaft rotates to drive the flat rotating disk (3) to rotate, thereby driving the processing tool (8) to rotate; Under the drive of the first drive mechanism, the rotating machining tool (8) enters the opening of the valve (1) to be machined and moves linearly, so that the blade (82) faces the valve seat to be machined; Under the drive of the second driving mechanism (6), the second transmission mechanism drives the first transmission mechanism, and the first transmission mechanism drives the screw rod (33) to rotate, so as to drive the slide plate (32) to move along its length direction, thereby driving the processing tool (8) facing the valve seat to move along the length direction of the slide plate (32) until the blade (82) contacts the surface of the valve seat to process it; The machining tool (8) further comprises a fixing seat (83) connected to the slide plate (32) and a tool rod (84) connected to the fixing seat (83), wherein the tool seat (81) is arranged at an end of the tool rod (84) away from the flat rotating disk (3); The knife seat (81) comprises a plurality of circumferentially distributed knife carrying portions, each knife carrying portion being provided with a knife blade (82).

2. The valve seat processing device according to claim 1, It is characterized in that The connecting member is a nut (34) sleeved on the screw rod (33). Under the drive of the second driving mechanism, the second transmission mechanism drives the first transmission mechanism, and the first transmission mechanism drives the screw rod (33) to rotate. The rotation of the screw rod (33) drives the nut (34) to move along the length direction of the screw rod (33), thereby driving the slide plate (32) to move along its length direction.

3. The valve seat processing device according to claim 1, It is characterized in that The first transmission mechanism comprises a first gear (36) and a second gear (37); the first gear (36) is sleeved on the screw rod (33); the second gear (37) is sleeved on the rotating shaft; the first gear (36) and the second gear (37) are in transmission cooperation.

4. The valve seat processing device according to claim 1, It is characterized in that The number of the inclined guide rails (2) is two, the number of the drive connection mechanisms is two, the two inclined guide rails (2) are arranged opposite to each other, and the valve (1) is arranged between the two inclined guide rails (2).

5. The valve seat processing device according to claim 1, It is characterized in that The second transmission mechanism includes a plurality of gears that cooperate with each other.

6. The valve seat processing device according to claim 1, It is characterized in that The machining tool is detachably arranged on the slide (32), and the blade (82) is detachably arranged on the blade seat (81).

7. The valve seat processing device according to claim 1, It is characterized in that The valve seat to be processed has a first surface and a second surface arranged adjacent to each other, and the blade (82) cuts the first surface of the valve seat to obtain a first surface (11), and cuts the second surface of the valve seat to be processed to obtain a second surface (12).

8. A processing method based on the valve seat processing device in any one of claims 1 to 7, It is characterized in that The following steps are involved: S1. Fix the valve on one side of the machining tool; S2, using the third driving mechanism to drive the flat rotating disk to rotate, thereby driving the processing tool to rotate; S3, using the first driving mechanism to drive the rotating machining tool to enter the opening of the valve to be machined to make a linear motion, so that the blade faces the valve seat to be machined; then using the second driving mechanism to drive the screw rod to rotate to drive the machining tool located in the valve to move along the length direction of the slide plate until the blade contacts the surface of the valve seat, so as to machine the surface of the valve seat; S4. After the processing is completed, the first driving mechanism is used to provide a backward driving force to move the driving connection mechanism as a whole backward until the processing tool is withdrawn from the opening of the valve.

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