Drilling device for valve flange machining

Abstract

The invention discloses a drilling device for valve flange machining, and relates to the technical field of flange machining, the drilling device comprises an isolation bin, a clamping piece and a drilling mechanism, and further comprises a movable frame capable of sliding relative to the isolation bin and a telescopic driving piece for driving the movable frame to move, and the clamping piece is arranged on the movable frame. According to the drilling device for machining the valve flange, the isolation bin is erected outside the drilling mechanism, the valve flange is machined inside the isolation bin, on one hand, chippings can be prevented from splashing, centralized treatment of the chippings is facilitated, and on the other hand, due to the fact that a drill bit fixing mode is adopted, the machining efficiency is improved. By means of the mode that feeding is conducted through the movable frame, operation of the drilling mechanism is more stable, vibration and errors caused by movement of a drill bit are reduced, the drilling precision is improved, in addition, in the downward moving process of the movable frame, chippings can be extruded, the chippings can be formed into regular blocks, and follow-up cleaning and transportation of the chippings are more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of flange processing, in particular to a drilling device used for valve flange processing. Background Art

[0002] Valve flange drilling is a common metal processing process, which is mainly used to drill holes on the flange for connection with other parts.

[0003] In the process of flange drilling, the processing of debris is a common operation requirement of drilling machine tools and an inevitable maintenance measure for drilling machine tools. Generally, the method of spraying cutting fluid or pneumatic blowing is used to cause debris flow to avoid excessive debris left on the workpiece or drill bit causing drilling inconvenience. Among them: (1) Although the cutting fluid can drive the debris to flow and concentrate the debris, the debris in the cutting fluid still needs to be filtered out and cleaned up later; (2) Although blasting can avoid the processing inconvenience caused by excessive accumulation of debris on the workpiece or drill bit, the debris after blasting will splash more seriously, making it inconvenient to centrally handle.

[0004] In order to solve this technical problem, we propose a drilling device for valve flange processing. Summary of the invention

[0005] [Technical issues solved] In view of the deficiencies in the prior art, the present invention provides a drilling device for valve flange processing, which has the advantages of self-weight chip dropping, closed processing, and debris concentration, and can effectively solve the problems in the background technology.

[0006]

Technical solution

[0007] Preferably, the drilling mechanism includes a drill bit and a driving component. Those skilled in the art will appreciate that the drill bit and the driving component can be installed with reference to the prior art, and will not be elaborated herein.

[0008] Preferably, the telescopic driving member is any telescopic driving member well known to those skilled in the art, such as a telescopic driving member such as an electric push rod, a pneumatic cylinder or an oil cylinder.

[0009] Preferably, the movable frame is fixedly connected to the telescopic rod on the telescopic driving member, and the outer side of the movable frame is in contact with the inner side of the isolation chamber, so that there is no need to set up too many limiting mechanisms and the stable sliding of the movable frame is maintained. The main body of the telescopic driving member can be fixedly connected to the isolation chamber, and can also be fixed to the outside, such as an external fixed frame or rack.

[0010] Preferably, the clamping member is fixedly connected to the movable frame, preferably in the middle of the movable frame, and the clamping member is a clamping member such as an electric clamp, and technicians in this field can understand that the electric clamp itself can be driven by an external motor to drive the valve flange to rotate, so as to cooperate with the drilling mechanism to change the position of the drilling hole.

[0011] Preferably, a door is provided on the isolation chamber to facilitate the subsequent removal and cleaning of debris in the isolation chamber.

[0012] Preferably, unlike conventional installation methods, when the drill bit is located below the valve flange rather than above it, during the drilling process, the debris will fall freely due to its own weight without the need for excessive external auxiliary equipment to blow and disturb the debris.

[0013] Preferably, the movable frame includes a top plate and a frame body, the top plate and the frame body are rotatably connected, the frame body is connected to the telescopic driving member, and a central axis serving as a rotation base point and a guide axis for rotation guidance are arranged on one side of the top plate away from the connection portion between the top plate and the frame body.

[0014] Preferably, the isolation chamber is provided with groove 1 and groove 2, and the structure of groove 1 matches that of the central axis, wherein groove 2 is provided with two sections, and the two sections of groove 2 are distributed on both sides of groove 1, and a guide groove is continuously arranged between the two sections of groove 1, and the structure of groove 2, the guide groove and the guide shaft matches.

[0015] Preferably, the movable frame is fixedly connected to the telescopic rod on the frame body and the telescopic drive member, and the top plate and the frame body are rotationally connected through a bearing. If the connecting part between the top plate and the frame body is located on the front side of the top plate, the central axis and the guide axis are located on the rear side of the top plate.

[0016] Preferably, two sides of the top plate except the front and rear sides and corresponding parts on the frame are provided with arc surfaces corresponding to the rotation trajectory of the top plate, so as to ensure the sealing between the top plate and the frame to the greatest extent.

[0017] Preferably, the center shaft and guide shaft are integrally formed with the top plate or fixedly connected thereto. To ensure smooth sliding of the center shaft and guide shaft, bearings are provided on the center shaft and guide shaft, and contact is made with groove one, groove two or guide groove through the bearings.

[0018] As a preferred embodiment, the structural states of the first groove, the second groove and the guide groove are as follows: Figure 6 , 7 As shown, the positions of both ends of the guide groove just correspond to the front and rear positions of the guide shaft performing circumferential motion based on the central axis.

[0019] Preferably, the bottom end of the movable frame is matched with the structure of the isolation bin, so that the movable frame can squeeze the debris in the isolation bin when the movable frame moves downward.

[0020] Preferably, the structural dimensions of the movable frame are set based on not affecting the normal operation of the drilling mechanism. The movable frame moves from top to bottom inside the isolation chamber under the driving action of the telescopic drive member, thereby squeezing the debris.

[0021] Preferably, a protective bin is provided inside the isolation bin, and the protective bin gradually widens from top to bottom, so as to protect the main parts of the drilling mechanism; the protective bin is integrally formed with the isolation bin, or is fixedly connected inside thereof; because the protective bin gradually widens from top to bottom, there is an inclined surface, and when debris falls onto the protective bin, or slides to the bottom of the isolation bin, it is thereby avoided to the greatest extent that the debris forms an accumulation inside the isolation bin and affects the normal operation of the drilling mechanism.

[0022] Preferably, when a protective bin is provided inside the isolation bin, the frame is configured as an "n"-type structure, and a vertical section is provided at the bottom end of the protective bin as a storage chamber for debris, and the structural dimensions of the two vertical sections of the frame fit the gap between the vertical section on the protective bin and the isolation bin; during the drilling process of the valve flange, debris will fall into the gap between the protective bin and the isolation bin, and the debris can be pressed into regular metal blocks by pressing down with the frame that fits the structure of the protective bin, making it easier to recycle and reuse the metal debris and effectively saving storage space.

[0023] Preferably, when the drill bit position of the drilling mechanism is adjustable, an adaptively deformable protective member is provided between the drilling mechanism and the protective chamber.

[0024] Preferably, the protective member is a foldable protective member such as an accordion plate, or a protective member such as a rubber pad.

[0025] Preferably, the drilling mechanism can be of a single-axis type, and the single-axis moving direction is perpendicular to the direction of the drill bit on the drilling mechanism. The processing position of the valve flange is adjusted by the transversely movable drill bit and the rotatable clamping part, thereby minimizing the installation cost of the drilling mechanism. In addition, because the drilling mechanism uses fewer driving shafts, the drilling mechanism has better stability and is more stable during the drilling process.

[0026] Preferably, one end of the first and second grooves located inside the isolation chamber is an inclined surface, which can effectively prevent debris from accumulating and clogging inside the first and second grooves.

[0027] Preferably, a valve is provided inside the isolation chamber, and a pipe connected to the valve is provided on the isolation chamber, and the pipe is externally connected to a fluid supply source.

[0028] Preferably, the valve is fixedly connected to the inner side of the isolation chamber and communicated therewith. The valve is a safety valve such as a valve with an elastic element. When the valve stem is compressed, it is in a conducting state, and vice versa after the pressure is released. Technicians in this field can refer to the existing technology for installation, and no further details are given here.

[0029] Preferably, the fluid supply source is mainly to pump the cutting fluid through a pump, but it is not limited to the cutting fluid, and gas can also be used to achieve the effect of blowing the debris.

[0030] Preferably, a fitting groove matching the valve structure is provided on the frame at a position corresponding to the valve, and a pipe head is provided at one end of the fitting groove, so that the pipe head engages with the valve when the movable frame moves to the end of the stroke.

[0031] Preferably, the fitting groove serves as a moving space for the valve, and guides the movement of the movable frame to a certain extent. The pipe head is fixedly connected to the outer side of the frame and communicates with it, and the pipe head is matched with the structure of the valve.

[0032] Preferably, a nozzle is provided on the inner side of the frame, the nozzle is directly opposite to the clamping member, and the nozzle is connected to the pipe head.

[0033] Preferably, the nozzle is fixedly connected to the inner side of the movable frame body and is inclined at a certain angle, facing the flipped clamping member.

[0034] Preferably, pipe fittings are provided between the nozzle and the pipe head and between the valve and the pipe, and the interior of the frame and the isolation chamber is connected through the pipe fittings, or the same effect is achieved by opening a concealed groove inside the frame and the isolation chamber.

[0035]

Beneficial Effects

[0036] Figure 1 The overall structure of a drilling device for valve flange processing according to the present invention is shown in FIG. Figure 1 .

[0037] Figure 2 The overall structure of a drilling device for valve flange processing according to the present invention is shown in FIG. Figure 2 .

[0038] Figure 3 The partial structure diagram of a drilling device for valve flange processing of the present invention is shown in FIG. Figure 1 .

[0039] Figure 4 The partial structure diagram of a drilling device for valve flange processing of the present invention is shown in FIG. Figure 2 .

[0040] Figure 5 The present invention is a schematic structural diagram of an isolation chamber in a drilling device for valve flange processing.

[0041] Figure 6 The present invention is a schematic diagram of the structural transformation state of a top plate in a drilling device for valve flange processing.

[0042] Figure 7 This is a partial structural disassembly diagram of a drilling device for valve flange processing according to the present invention.

[0043] In the figure: 1. Isolation chamber; 2. Movable frame; 3. Clamping parts; 4. Drilling mechanism; 5. Telescopic driving parts; 11. Trough 1; 12. Trough 2; 13. Guide trough; 14. Protective bin; 15. Valve; 16. Pipe; 141. Protective parts; 21. top plate; 22. frame; 23. nozzle; 24. pipe head; 25. fitting groove; 211. Center axis; 212. Guide axis. DETAILED DESCRIPTION

[0044] In order to make the technical means, creative features, objectives and functional effects of the present invention easy to understand, the present invention will be further 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 are within the scope of protection of the present invention.

[0045] [Example 1] In order to address the shortcomings of the existing technology, such as Figure 1 , 2 As shown, the present invention provides a drilling device for valve flange processing, the drilling mechanism 4 includes a drill bit and a driving component. It can be understood by those skilled in the art that the drill bit and the driving component can be set up with reference to the prior art, and no further details are given here; the telescopic driving member 5 is any telescopic driving member well known to those skilled in the art, such as a telescopic driving member such as an electric push rod, a cylinder or an oil cylinder; The movable frame 2 is fixedly connected to the telescopic rod on the telescopic driving member 5, and the outer side of the movable frame 2 is attached to the inner side of the isolation chamber 1, so that there is no need to set up too many limiting mechanisms, and the stable sliding of the movable frame 2 is maintained. The main body of the telescopic driving member 5 can be fixedly connected to the isolation chamber 1, and can also be fixed to the outside, such as an external fixed frame or rack; The clamping member 3 is fixedly connected to the movable frame 2, preferably in the middle of the movable frame 2. The clamping member 3 is a clamping member such as an electric clamp, and technicians in this field can understand that the electric clamp itself can be driven by an external motor to drive the valve flange to rotate, so as to cooperate with the drilling mechanism 4 to change the position of the drill hole; a door is provided on the isolation chamber 1 to facilitate the subsequent removal and cleaning of debris in the isolation chamber 1.

[0046] It should be noted that, in the process of drilling the valve flange, the valve flange needs to be fixedly placed on the clamping member 3. The clamping member 3 should be in the initial state of the movable frame 2 as shown in FIG. Figure 1 , 2The structural state shown is located outside the isolation chamber 1 and the movable frame 2, and is vertically upward. In this state, the valve flange can be directly placed on the clamping member 3 for fixing. Then, by driving the telescopic driving member 5, the telescopic driving member 5 drives the movable frame 2 to slide relative to the isolation chamber 1. The sliding includes upward and downward movement. In the process of the movable frame 2 sliding downward based on the isolation chamber 1, the clamping member 3 is driven to flip, so that the valve flange flips 180°. After the valve flange is turned over 180°, the valve flange is facing the drilling mechanism 4. In this state, the movable frame 2 is driven to continuously move downward by driving the telescopic driving member 5. In the subsequent downward movement, the movable frame 2 will drive the valve flange fixed on the clamping member 3 to directly act on the drilling mechanism 4. At the same time, the drilling mechanism 4 is started synchronously to realize the drilling processing of the valve flange. After the processing is completed, the return process is performed in the opposite manner to the above steps. During the return process, the top plate 21 will also be flipped 180°. During this process, the debris left on the top plate 21 or the clamping member 3 and the workpiece will fall into the interior of the isolation chamber 1 due to this disturbance.

[0047] It is worth mentioning that, by setting up an isolation chamber 1 outside the drilling mechanism 4, in the initial position of the movable frame 2, the clamping member 3 is located on the outside of the isolation chamber 1. In this state, the valve flange to be processed can be fixed to the clamping member 3, and then the movable frame 2 is driven by the drilling mechanism 4 to slide to the inside of the isolation chamber 1. During the sliding process of the movable frame 2, the clamping member 3 is driven to flip, so that the flipped clamping member 3 is located on the inside of the isolation chamber 1. In this state, the processing of the valve flange is located inside the isolation chamber 1. On the one hand, it can prevent debris from splashing, which is convenient for centralized processing of debris. On the other hand, because the drill bit is fixed and the material is fed through the movable frame 2, the operation of the drilling mechanism 4 is more stable, the vibration and error caused by the movement of the drill bit are reduced, and the drilling accuracy is improved. In addition, the movable frame 2 can squeeze the debris during the downward movement, so that the debris can be formed into regular blocks, which is more convenient for subsequent cleaning and transportation of the debris; And unlike the conventional installation method, when the drill bit is located below the valve flange instead of above it, during the drilling process, the debris will fall freely due to its own weight, and there is no need for too much external auxiliary equipment to blow and disturb the debris, which effectively reduces the investment cost of equipment installation.

[0048] Specifically, Figures 3 to 6As shown, an isolation chamber 1 and a movable frame 2 for a drilling device for valve flange processing, the movable frame 2 is fixedly connected to the telescopic rod on the telescopic driving member 5 based on the frame body 22, and the top plate 21 and the frame body 22 are rotatably connected through a bearing. For example, the connecting portion between the top plate 21 and the frame body 22 is located on the front side of the top plate 21, and the central axis 211 and the guide axis 212 are located on the rear side of the top plate 21; the other two sides of the top plate 21 and the corresponding parts of the frame body 22 except for this front and rear sides are provided with arc surfaces corresponding to the rotation trajectory of the top plate 21, so as to maximize the sealing between the top plate 21 and the frame body 22; The central shaft 211 and the guide shaft 212 are formed integrally with the top plate 21 or are fixedly connected thereto. To ensure the smooth sliding of the central shaft 211 and the guide shaft 212, bearings are provided on the central shaft 211 and the guide shaft 212. The bearings are in contact with the first groove 11, the second groove 12 or the guide groove 13. The structural state of the first groove 11, the second groove 12 and the guide groove 13 is as follows: Figure 6 , 7 As shown, the positions of both ends of the guide groove 13 just correspond to the front and rear positions of the guide shaft 212 performing circumferential motion based on the central axis 211 .

[0049] Among them, one end of the groove 1 11 and the groove 2 12 located on the inner side of the isolation chamber 1 is an inclined surface.

[0050] It should be noted that the present invention is a drilling device for valve flange processing. Through the isolation chamber 1 and the movable frame 2, during the processing of the valve flange, the frame 22 is driven by the telescopic driving member 5 to slide relative to the isolation chamber 1. During the sliding of the frame 22, the top plate 21 and the frame 22 can rotate relative to each other. In this state, the central axis 211 on the top plate 21 moves based on the groove 11, and the guide axis 212 on the top plate 21 moves based on the groove 2 12. like Figure 6 In the structural state shown, the moving stroke of the guide shaft 212 is divided into three sections, the first section is a second groove 12, and the second groove 12 is located at the upper side as the starting section, the second section is a guide groove 13, and the third section is another second groove 12 behind the guide groove 13; When the guide shaft 212 is moved to the groove 2 12 as the starting section, the drilling mechanism 4 is located above the top plate 21. In this state, the valve flange can be fixed before processing. When the guide shaft 212 is moved to the guide groove 13, the top plate 21 rotates based on the central axis 211, and is flipped based on the guidance of the guide shaft 212 based on the guide groove 13. When the guide shaft 212 moves from one end of the guide groove 13 to the other end, the 180° flip of the top plate 21 is completed. In this state, the valve flange is facing the drilling mechanism 4, and then the movable frame 2 is continuously moved. At this time, the guide shaft 212 on the top plate 21 is located in another groove 2 12. Maintaining this state, it moves vertically downward, driving the valve flange to contact the drill bit on the drilling mechanism 4, thereby realizing the drilling processing of the valve flange.

[0051] As a preferred embodiment, the bottom end of the movable frame 2 is matched with the structure of the isolation chamber 1, and is used for squeezing the debris in the isolation chamber 1 when the movable frame 2 moves downward; the structure size of the movable frame 2 is set based on not affecting the normal operation of the drilling mechanism 4, and the movable frame 2 moves from top to bottom inside the isolation chamber 1 under the driving action of the telescopic driving member 5, so as to squeeze the debris; In addition, if Figure 1 , 4 As shown in FIG5 , a protective bin 14 is provided inside the isolation bin 1. The protective bin 14 is narrower and wider from top to bottom, and is used to protect the main parts of the drilling mechanism 4. The protective bin 14 is integrally formed with the isolation bin 1, or is fixedly connected to the inside thereof. Since the protective bin 14 is narrower and wider from top to bottom, there is an inclined surface. When debris falls onto the protective bin 14, it may slide to the bottom of the isolation bin 1, thereby preventing the debris from accumulating inside the isolation bin 1 and affecting the normal operation of the drilling mechanism 4 to the greatest extent. Furthermore, when a protective bin 14 is provided inside the isolation bin 1, the frame 22 is configured as an "n"-type structure, and a vertical section is provided at the bottom end of the protective bin 14 as a storage chamber for debris. The structural dimensions of the two vertical sections of the frame 22 fit the gap between the vertical section on the protective bin 14 and the isolation bin 1; during the drilling process of the valve flange, the debris will fall into the gap between the protective bin 14 and the isolation bin 1. By pressing down with the frame 22 that fits the structure of the protective bin 14, the debris can be pressed into regular metal blocks, making it easier to recycle and reuse the metal debris, and effectively saving storage space.

[0052] As a preferred embodiment, when the drill position of the drilling mechanism 4 is adjustable, an adaptively deformable protective member 141 is provided between the drilling mechanism 4 and the protective chamber 14; The drilling mechanism 4 can be a single-axis type, and the single-axis moving direction is perpendicular to the direction of the drill bit on the drilling mechanism 4. The processing position of the valve flange is adjusted by the transversely movable drill bit and the rotatable clamping member 3, thereby minimizing the installation cost of the drilling mechanism 4. In addition, since the drilling mechanism 4 uses fewer driving shafts, the drilling mechanism 4 has better stability and is more stable during the drilling process. The protective member 141 is a foldable protective member such as an accordion plate, or a protective member such as a rubber cushion.

[0053] [Example 2] In order to further clean up the debris, this embodiment is proposed: Specifically, Figure 7 As shown, an isolation chamber 1 for a drilling device for valve flange processing is provided, a valve 15 is provided inside the isolation chamber 1, and a pipe 16 connected to the valve 15 is provided on the isolation chamber 1, and the pipe 16 is externally connected to a fluid supply source; the valve 15 is fixedly connected to the inner side of the isolation chamber 1 and communicated therewith, and the valve 15 is a valve with an elastic element such as a safety valve, and when the valve stem is pressurized, it forms a conducting state, and vice versa after the pressure is released. Those skilled in the art can refer to the prior art for setting up, and will not be described in detail here; the fluid supply source is mainly to pump the cutting fluid through a pump, but is not limited to the cutting fluid, and gas can also be used to achieve the effect of blowing the debris; A fitting groove 25 that fits the structure of the valve 15 is provided on the frame 22 at a position corresponding to the valve 15, and a pipe head 24 is provided at one end of the fitting groove 25. When the movable frame 2 moves to the end of the stroke, the pipe head 24 is engaged with the valve 15. The fitting groove 25 serves as a moving space for the valve 15 and guides the movement of the movable frame 2 to a certain extent. The pipe head 24 is fixedly connected to the outer side of the frame 22 and communicates with it, and the pipe head 24 fits the structure of the valve 15. A nozzle 23 is provided on the inner side of the frame 22, facing the clamping member 3, and connected to the pipe head 24; the nozzle 23 is fixedly connected to the inner side of the frame 22 of the movable frame 2, and is inclined at a certain angle, facing the flipped clamping member 3.

[0054] Among them, pipe fittings are arranged between the nozzle 23 and the pipe head 24 and between the valve 15 and the pipe 16, and the inside of the frame 22 and the isolation chamber 1 are connected through the pipe fittings, or the same effect is achieved by opening hidden grooves inside the frame 22 and the isolation chamber 1.

[0055] It should be noted that the present invention is a drilling device for valve flange processing. Through the isolation chamber 1 that is set up, during the process of drilling the valve flange, when it moves to the third moving stroke on the top plate 21, in this state, the clamping member 3 is oriented toward the drilling mechanism 4. During the continuous downward movement of the frame 22, the pipe head 24 on the frame 22 applies pressure to and engages the valve 15 on the isolation chamber 1. The valve 15 is in a conducting state after being subjected to force, and the cutting fluid flows from the pipe 16 to the valve 15, and then from the valve 15 to a plurality of nozzles 23 through the pipe head 24, and is sprayed from the nozzles 23 to the valve flange to achieve lubrication, cooling, and cleaning effects.

[0056] Among them, in the embodiment, those skilled in the art can understand that a port for the outflow of fluids such as cutting fluid or gas can be opened on the isolation chamber 1, and a filter is provided on the port. The position of the port is preferably opened at the end position of the two vertical sections of the isolation chamber 1 opposite to "n", that is, at the lowest end of the isolation chamber 1, which is more in line with the natural flow law of cutting fluid and debris.

[0057] It is worth mentioning that the valve 15 is triggered by the pipe head 24 to form a conduction mode, so that the cutting fluid is sprayed only during the process of drilling the valve flange, avoiding excessive consumption of cutting fluid during the non-drilling process and eliminating excessive external automation programs or manual intervention.

[0058] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed for protection.

Claims

1. A drilling device for valve flange machining, comprising an isolation chamber (1), a clamping member (3), and a drilling mechanism (4) located inside the isolation chamber (1), characterized in that: It also includes a movable frame (2) that can slide relative to the isolation chamber (1) and a telescopic driving member (5) that drives the movable frame (2) to move. The clamping member (3) is arranged on the movable frame (2). When the movable frame (2) slides relative to the isolation chamber (1), the clamping member (3) is turned over by 180 degrees. The position relationship of the clamping member (3) is changed from being located outside the isolation chamber (1) to being located inside the isolation chamber (1). When the clamping member (3) is turned over to be located inside the isolation chamber (1), the clamping member (3) is directly opposite to the drilling mechanism (4). The installation direction of the drilling mechanism (4) is based on the orientation of the drill bit thereon from bottom to top, and when the clamping member (3) is flipped to be located inside the isolation chamber (1), the orientation of the clamping member (3) is from top to bottom.

2. A drilling device for valve flange processing according to claim 1, characterized in that: The movable frame (2) comprises a top plate (21) and a frame body (22), the top plate (21) and the frame body (22) being rotatably connected, the frame body (22) being connected to the telescopic driving member (5), and a central axis (211) serving as a rotation base point and a guide axis (212) for rotational guidance are provided on a side of the top plate (21) away from a connection portion between the top plate (21) and the frame body (22); The isolation chamber (1) is provided with a first groove (11) and a second groove (12), the structure of the first groove (11) and the central axis (211) being compatible, wherein the second groove (12) is provided with two sections, the two sections of the second groove (12) being distributed on both sides of the first groove (11), and a guide groove (13) being continuously provided between the two sections of the first groove (11), and the structure of the second groove (12), the guide groove (13) and the guide axis (212) being compatible.

3. A drilling device for valve flange machining according to claim 1, characterized in that: The bottom end of the movable frame (2) is matched with the structure of the isolation bin (1), and is used for the movable frame (2) to squeeze the debris in the isolation bin (1) when the movable frame (2) moves downward.

4. A drilling device for valve flange machining according to claim 2, characterized in that: A protection chamber (14) is arranged inside the isolation chamber (1), and the protection chamber (14) gradually widens from top to bottom and is used to protect the main body components of the drilling mechanism (4).

5. A drilling device for valve flange machining according to claim 4, characterized in that: When a protective bin (14) is provided inside the isolation bin (1), the frame (22) is configured as an "n"-shaped structure, and a vertical section is provided at the bottom end of the protective bin (14) to serve as a storage chamber for debris, and the structural dimensions of the two vertical sections of the frame (22) fit the gap between the vertical section on the protective bin (14) and the isolation bin (1).

6. A drilling device for valve flange machining according to claim 4, characterized in that: When the drill bit position of the drilling mechanism (4) is adjustable, an adaptively deformable protective member (141) is provided between the drilling mechanism (4) and the protective bin (14).

7. A drilling device for valve flange machining according to claim 2, characterized in that: One end of the first groove (11) and the second groove (12) located inside the isolation chamber (1) is an inclined surface.

8. The drilling device for valve flange machining according to claim 2, characterized in that: A valve (15) is arranged inside the isolation chamber (1), and a pipe (16) connected to the valve (15) is arranged on the isolation chamber (1), and the pipe (16) is externally connected to a fluid supply source; A fitting groove (25) that fits with the structure of the valve (15) is provided on the frame (22) at a position corresponding to the valve (15), and a pipe head (24) is provided at one end of the fitting groove (25), so that the pipe head (24) is engaged with the valve (15) when the movable frame (2) moves to the end of the stroke; A nozzle (23) is arranged on the inner side of the frame (22), the nozzle (23) is directly opposite to the clamping member (3), and the nozzle (23) is connected to the pipe head (24).

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