Cutting device and machining method for double-seal air-tight seal thread buckle of oil casing pipe
By designing the cooling, filtration and collection mechanism of the cutting device, the problem of difficult removal of debris during the cutting process of the oil casing double seal air-sealed thread buckle is solved, and the cutting quality and cutting tool life are improved.
Patent Information
- Application Number
- CN202510534210.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2025-07-08
AI Technical Summary
During the cutting process of double sealed air-sealed thread buckle of oil casing, debris are difficult to remove in time, resulting in cutting blockage and affecting cutting quality and tool life.
A cutting device including cutting, cooling, filtration and collection mechanism is designed. Through the use of coolant and gas, cutting debris is removed, and a clamp block and chuck slot are set to fix the cutting knife to prevent its deviation. A filter mechanism is used to remove impurities, thereby improving the cutting quality and cutting knife life.
Effectively remove cutting debris, prevent cutting knife wear, improve cutting quality and cutting knife life, simplify cutting knife replacement, and improve cleaning efficiency and quality.
Smart Images
Figure CN120269084A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of oil casing thread processing, and specifically to a cutting device and processing method for double-sealed gas-tight threads of oil casings. Background Art
[0002] The double-sealed gas-tight threads of oil casings are key components used to connect oil casings in the oil and gas industry. Their design aims to ensure gas-tight performance and connection strength in harsh environments such as high pressure and corrosion. Through a double-sealed structure and precise thread design, efficient sealing between oil casings is achieved. Usually, high-strength steel is selected as the material, and the yield strength is improved through heat treatment.
[0003] During the cutting process of the double-sealed gas-tight threads of oil casings, after clamping the double-sealed gas-tight threads of the oil casing, the inner wall of the connecting piece is cut into a thread shape by a cutting tool. During the cutting process, a large amount of debris will be generated. If these debris are not removed in time, they are very likely to accumulate in the cutting area, thereby causing a cutting blockage phenomenon. During the cutting tool's cutting feed process, it is easy to cause accelerated wear or damage to the cutting tool, thus affecting the cutting quality and tool life. Summary of the Invention
[0004] The purpose of the present invention is to provide a cutting device for double-sealed gas-tight threads of oil casings to solve the problem of difficult timely removal of debris proposed in the above background art.
[0005] To achieve the above purpose, the present invention provides the following technical solution: A cutting device for double-sealed gas-tight threads of oil casings, comprising: a processing table, on the top surface of the processing table, a feeding component and a power component are fixedly installed. One end of the feeding component is fixedly installed with a fixed shaft, and the other end of the fixed shaft is fixedly installed with an installation shaft. It further includes: a cutting mechanism, the cutting mechanism is arranged on one side of the feeding component, the cutting mechanism includes a cutting tool located on one side of the installation shaft, a clamping block is arranged above the cutting tool, and the cutting mechanism is used for cutting the workpiece; a cooling mechanism, the cooling mechanism is arranged on one side of the feeding component, the cooling mechanism includes a connecting pipe located on one side of the cutting tool, on the outer wall of one end of the connecting pipe, an installation sleeve is fixedly installed, on one side of the installation sleeve, a connecting head is arranged, and one end of the installation shaft is fixedly penetrated and installed with a pipeline. Both the pipeline and the connecting pipe are internally divided into two communicating holes, and the cooling mechanism is used for cooling the cutting tool; a filtering mechanism, the filtering mechanism is arranged above the processing table, the filtering mechanism includes a filter plate fixedly installed on the inner wall of the connecting head, and two fixing blocks are fixedly installed on one side of the connecting head, and the filtering mechanism is used for filtering the coolant.
[0006] Preferably, a rotating pipe is fixedly installed on the inner wall of the power component, a fixing component is slidably installed on the inner wall of one side of the rotating pipe, a collecting groove is penetrated and opened on the top surface of the processing table, and a collecting frame is movably installed on the side surface of the processing table.
[0007] Preferably, an installation groove is formed at one end of the installation shaft. The top surface of the installation groove is fixedly connected to the bottom surface of the cutting tool by screws. The cutting tool is provided with three cutting heads. An installation column is installed on the top surface of the installation shaft by bolts. The side surface of the installation column is fixedly connected to the side surface of the clamping block. A clamping groove is formed on the top surface of the cutting tool. The lower end of the clamping block is clamped with the clamping groove.
[0008] Preferably, one end of the pipeline is fixedly connected to one end of the connecting pipe. A fixing sleeve is fixedly installed on the outer wall of the connecting pipe. A fixing rod is fixedly installed on the outer wall of the fixing sleeve.
[0009] Preferably, the other end of the fixing rod is rotatably connected to a fixing frame. The side surface of the fixing rod is slidably connected to the inner wall of the fixing frame. Arc-shaped grooves are respectively formed through the upper and lower side surfaces of the fixing frame. A fixing column is fixedly installed through the top surface of the fixing rod. The outer wall of the fixing column is slidably connected to the inner walls of the two arc-shaped grooves.
[0010] Preferably, an adjustment groove is formed on the top surface of the fixing column. Two adjustment plates are slidably installed on the inner wall of the adjustment groove. A slide rod is slidably installed through the side surfaces of the two adjustment plates. Both ends of the slide rod are fixedly connected to the inner wall of the adjustment groove. A first elastic member is slidably installed on the outer wall of the slide rod. Both ends of the first elastic member are fixedly connected to the side surfaces of the two adjustment plates.
[0011] Preferably, clamping columns are respectively fixedly installed on the other side surfaces of the two adjustment plates. The other ends of the two clamping columns respectively slide through the inner wall of the adjustment groove and extend to the outside of the fixing column. A plurality of clamping holes are formed in the inner wall of the arc-shaped groove. The clamping columns are clamped with the clamping holes.
[0012] Preferably, the inside of the connection head is provided with two communication holes. Fixing grooves are respectively formed through the top surfaces of the two fixing blocks. Two slots are formed on the side surface of the installation sleeve. The outer walls of the two fixing blocks are respectively slidably connected to the inner walls of the two slots. A chute is formed inside the installation sleeve. The chute communicates with the two slots. Two arc-shaped plates are slidably installed on the inner wall of the chute.
[0013] Preferably, the adjacent side surfaces of the two arc-shaped plates are connected by a second elastic member. The mutually remote side surfaces of the two arc-shaped plates are both wedge-shaped. One ends of the two arc-shaped plates are respectively clamped with the fixing grooves. Pressing plates are respectively fixedly installed on the outer walls of one ends of the two arc-shaped plates. A through groove is formed through one side inner wall of the chute. The side surfaces of the two pressing plates are slidably connected to the inner wall of the through groove.
[0014] A processing method for a double-sealed gas-tight thread coupling of an oil casing pipe, comprising the following steps: S1: First, clamp and fix the workpiece, and adjust the position of the connecting head so that the connecting head faces the cutting tool; S2: Pass in the coolant and the purged gas, and spray them from the connecting head towards the cutting tool; S3: Start the power component and the feed component. The power component drives the workpiece to rotate, and the feed component drives the cutting tool to move towards the workpiece to cut the inner wall of the workpiece; S4: During the cutting process, the coolant and gas sprayed from the connecting head cool the cutting tool and blow away the cutting debris, so that the cutting tool is cooled and the debris is not likely to block the feed route of the cutting tool; S5: Finally, collect the debris and coolant generated by the cutting.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By pressing the adjusting plate, the clamping post is driven to move out of the clamping hole, and rotating the fixing post drives the fixing rod, the fixing sleeve, the connecting pipe and the connecting head to rotate by a certain angle, so that the connecting head faces the cutting tool. The inner parts of the connecting pipe and the connecting head are divided into two connecting holes, and the coolant and gas are respectively passed into the two connecting holes to blow away the debris during the cutting process and cool and lower the temperature of the cutting tool. The direction of blowing away the debris is opposite to the direction of the cutting tool's feed, so that the debris is not likely to cause wear and damage to the cutting tool, thereby improving the cutting quality and the service life of the cutting tool; By providing the cutting tool, the mounting groove, the mounting post, the clamping block and the clamping groove, when the clamping block is clamped with the clamping groove, the cutting tool is fixed and limited, so that the cutting tool is not likely to rotate and shift during the cutting process, the cutting tool cuts more stably, the cutting quality is improved, and when the cutting tool is damaged or worn, it is convenient to disassemble and replace the cutting tool, thereby improving the replacement efficiency of the cutting tool; By providing the filter plate, the incoming coolant and gas are filtered, so that the impurities in the gas and the coolant are not likely to be sprayed towards the cutting tool, and the impurities are not likely to cause damage to the cutting tool and blockage at the cutting place, improving the cooling effect on the cutting tool and the removal effect of the debris. The provided pressing plate, arc-shaped plate and fixing block facilitate the installation and disassembly of the connecting head. After the filter plate filters the impurities in the connecting head, it is convenient to remove the impurities, improving the removal efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional structural schematic diagram of the fixing component of the present invention; Figure 3 is a three-dimensional structural schematic diagram of the cutting tool of the present invention; Figure 4 is an exploded three-dimensional structural diagram of the cutting tool part of the present invention; Figure 5 of the present invention Figure 2 enlarged view of part A; Figure 6 is an exploded three-dimensional structural diagram of the fixing frame part of the present invention; Figure 7 is a sectional three-dimensional structural schematic diagram of the fixing post of the present invention; Figure 8 is an exploded three-dimensional structural diagram of the filter plate of the present invention;Figure 9 Schematic cross-sectional view of the three-dimensional structure of the installation sleeve of the present invention.
[0017] In the figure: 1. Processing table; 101. Feeding component; 102. Fixed shaft; 103. Installation shaft; 104. Power component; 105. Rotating pipe; 106. Fixing component; 2. Cutting mechanism; 201. Cutter; 202. Installation groove; 203. Installation column; 204. Clamping block; 205. Clamping groove; 3. Cooling mechanism; 301. Pipe; 302. Connecting pipe; 303. Installation sleeve; 304. Connecting head; 305. Fixed sleeve; 306. Fixed rod; 307. Fixed frame; 308. Arc groove; 309. Card hole; 310. Fixed column; 311. Adjusting groove; 312. Adjusting plate; 313. Clamping column; 314. Slide bar; 315. First elastic member; 4. Filter mechanism; 401. Filter plate; 402. Fixed block; 403. Fixed groove; 404. Slide groove; 405. Slot; 406. Arc plate; 407. Second elastic member; 408. Pressing plate; 409. Through groove; 5. Collection tank; 6. Collection frame. Detailed implementation manners
[0018] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The following will describe the present application in detail with reference to the drawings and in combination with the embodiments.
[0019] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.
[0020] As Figures 1 - 9 shown, the present application provides a cutting device for double-sealed gas-sealed screw threads of oil casing pipes, including: a processing table 1, a feeding component 101 and a power component 104 are fixedly installed on the top surface of the processing table 1, one end of the feeding component 101 is fixedly installed with a fixed shaft 102, the other end of the fixed shaft 102 is fixedly installed with an installation shaft 103, and further includes: a cutting mechanism 2, the cutting mechanism 2 is arranged on one side of the feeding component 101, the cutting mechanism 2 includes a cutter 201 located on one side of the installation shaft 103, a clamping block 204 is arranged above the cutter 201, and the cutting mechanism 2 is used for cutting the workpiece; specifically, as Figures 1 - 2 shown, a rotating pipe 105 is fixedly installed on the inner wall of the power component 104, a fixing component 106 is slidably installed on the inner wall of one side of the rotating pipe 105, a collection tank 5 is formed through the top surface of the processing table 1, and a collection frame 6 is movably installed on the side surface of the processing table 1.
[0021] In this embodiment: The driving component 104 drives the rotating pipe 105 to rotate, and the provided collecting groove 5 and collecting frame 6 are used to collect the cut chips and coolant.
[0022] Specifically, as Figures 1 - 5 shown, one end of the mounting shaft 103 is provided with a mounting groove 202. The top surface of the mounting groove 202 is fixedly connected to the bottom surface of the cutting tool 201 by screws. The cutting tool 201 is provided with three cutting heads. The top surface of the mounting shaft 103 is mounted with a mounting post 203 by bolts. The side surface of the mounting post 203 is fixedly connected to the side surface of the clamping block 204. The top surface of the cutting tool 201 is provided with a clamping groove 205, and the lower end of the clamping block 204 is clamped with the clamping groove 205.
[0023] In this embodiment: The cutting tool 201 is fixed by the provided screws, which facilitates the installation and fixation of the cutting tool 201 and is also convenient for replacement. The provided clamping block 204 and clamping groove 205 are clamped, so as to limit and fix the cutting tool 201, making the cutting tool 201 not easy to rotate and shift, and the cutting tool 201 is more stable, thereby improving the cutting quality.
[0024] The cooling mechanism 3 is arranged on one side of the feeding component 101. The cooling mechanism 3 includes a connecting pipe 302 located on one side of the cutting tool 201. One end of the outer wall of the connecting pipe 302 is fixedly installed with a mounting sleeve 303. One side of the mounting sleeve 303 is provided with a connecting head 304. The cooling mechanism 3 is used to cool the cutting tool 201; Specifically, as Figures 1 - 7 shown, one end of the mounting shaft 103 is fixedly penetrated and installed with a pipe 301. One end of the pipe 301 is fixedly connected to one end of the connecting pipe 302. The outer wall of the connecting pipe 302 is fixedly installed with a fixing sleeve 305. The outer wall of the fixing sleeve 305 is fixedly installed with a fixing rod 306. The inside of both the pipe 301 and the connecting pipe 302 is divided into two communicating holes.
[0025] In this embodiment: Through the two communicating holes separated by the provided connecting pipe 302, the coolant and gas are respectively transported to cool the cutting tool 201 and remove the chips. The connecting pipe 302 is made of a soft material.
[0026] Specifically, as Figures 1 - 7 shown, the other end of the fixing rod 306 is rotatably connected to a fixing frame 307. The side surface of the fixing rod 306 is slidably connected to the inner wall of the fixing frame 307. The upper and lower side surfaces of the fixing frame 307 are respectively provided with arc-shaped grooves 308 in a penetrating manner. The top surface of the fixing rod 306 is fixedly penetrated and installed with a fixing column 310. The outer wall of the fixing column 310 is slidably connected to the inner walls of the two arc-shaped grooves 308.
[0027] In this embodiment: The fixing column 310 is limited by the provided arc-shaped grooves 308, making the rotation of the fixing column 310 more stable.
[0028] Specifically, asFigures 1 - 7 As shown, an adjustment groove 311 is provided on the top surface of the fixed column 310. Two adjustment plates 312 are slidably installed on the inner wall of the adjustment groove 311. A slide rod 314 is slidably penetrated through the side surfaces of the two adjustment plates 312. Both ends of the slide rod 314 are fixedly connected to the inner wall of the adjustment groove 311. An elastic member 315 is slidably installed on the outer wall of the slide rod 314. Both ends of the elastic member 315 are fixedly connected to the side surfaces of the two adjustment plates 312.
[0029] In this embodiment: The elastic member 315 applies an elastic force to the adjustment plate 312, and the provided slide rod 314 limits the adjustment plate 312, making the movement of the adjustment plate 312 more stable.
[0030] Specifically, as Figures 1 - 7 shown, clamping columns 313 are respectively fixedly installed on the other side surfaces of the two adjustment plates 312. The other ends of the two clamping columns 313 respectively slide through the inner wall of the adjustment groove 311 and extend to the outside of the fixed column 310. A plurality of clamping holes 309 are provided on the inner wall of the arc-shaped groove 308, and the clamping columns 313 are clamped with the clamping holes 309.
[0031] In this embodiment: By clamping the provided clamping columns 313 and the clamping holes 309, the clamping columns 313 are fixed, and further the fixed column 310 and the fixed rod 306 are fixed, thereby fixing the connecting head 304.
[0032] Filtering mechanism 4 is provided above the processing table 1. The filtering mechanism 4 includes a filter plate 401 fixedly installed on the inner wall of the connecting head 304. Two fixing blocks 402 are fixedly installed on one side of the connecting head 304. The filtering mechanism 4 is used for filtering the coolant.
[0033] Specifically, as Figures 1 - 9 shown, the inside of the connecting head 304 is provided with two communicating holes. Fixing grooves 403 are respectively and penetratingly opened on the top surfaces of the two fixing blocks 402. Two slots 405 are provided on the side surface of the mounting sleeve 303. The outer walls of the two fixing blocks 402 are respectively slidably connected to the inner walls of the two slots 405. A chute 404 is provided inside the mounting sleeve 303. The chute 404 communicates with the two slots 405. Two arc-shaped plates 406 are slidably installed on the inner wall of the chute 404.
[0034] In this embodiment: Through the provided filter plate 401, impurities in the gas and the coolant are filtered to prevent the impurities from damaging the cutting tool 201 and affecting the cutting quality of the cutting tool 201.
[0035] Specifically, as Figures 1 - 9As shown, the two arc-shaped plates 406 are connected by the second elastic member 407 near the side surfaces. The side surfaces of the two arc-shaped plates 406 away from each other are both arranged in a wedge shape. One end of each of the two arc-shaped plates 406 is respectively clamped with the fixed groove 403. Pressing plates 408 are respectively fixedly installed on the outer walls of one end of the two arc-shaped plates 406. A through groove 409 is formed by penetrating the inner wall of one side of the sliding groove 404. The side surfaces of the two pressing plates 408 are slidably connected with the inner wall of the through groove 409.
[0036] In this embodiment: through the arranged second elastic member 407, an elastic force is applied to the arc-shaped plate 406. The arranged pressing plate 408 drives the arc-shaped plate 406 to move, and the arc-shaped plate 406 moves out from the inner wall of the fixed groove 403, which is convenient for removing the connecting head 304, thereby facilitating the removal of debris.
[0037] A processing method for a double-sealed gas-sealed thread of an oil casing includes the following steps: S1: First, the workpiece to be processed is clamped and fixed, and the position of the connecting head 304 is adjusted so that the connecting head 304 faces the cutting tool 201; S2: Coolant and scavenging gas are introduced and sprayed from the connecting head 304 towards the cutting tool 201; S3: The power component 104 and the feeding component 101 are started. The power component 104 drives the workpiece to rotate, and the feeding component 101 drives the cutting tool 201 to move towards the workpiece to cut the inner wall of the workpiece; S4: During the cutting process, the coolant and gas sprayed from the connecting head 304 cool the cutting tool 201 and blow away the cutting debris, so that the cutting tool 201 is cooled and the debris is not likely to block the feeding route of the cutting tool 201; S5: Finally, the cutting debris and coolant are collected.
[0038] The specific solution of this scheme is as follows: Place the workpiece to be processed on the inner wall of the rotating pipe 105, and fix the workpiece through the fixing component 106. Press the adjusting plate 312 to drive the clamping column 313 to move out of the clamping hole 309. Rotate the fixing column 310 to drive the fixing rod 306, the fixing sleeve 305, the connecting pipe 302 and the connecting head 304 to rotate by a certain angle, so that the connecting head 304 faces the cutting tool 201. Turn on the feeding component 101 and the power component 104. The power component 104 drives the rotating pipe 105 and the workpiece to rotate, and the feeding component 101 drives the cutting tool 201 to move towards the workpiece and cut the inner wall of the workpiece. During the cutting process, coolant and gas are introduced from the pipe 301. The coolant and gas are respectively transported through the connecting holes and discharged from the connecting head 304 through the connecting pipe 302. And the filter plate 401 filters the coolant and gas. The gas blows away the debris during the cutting process, and the coolant cools down the cutting tool 201. The direction of blowing away the debris is opposite to the feeding direction of the cutting tool 201, so that the debris is not likely to cause wear and damage to the cutting tool 201, thereby improving the cutting quality and the service life of the cutting tool 201. After the cutting is completed, through the installation groove 202, the installation column 203, the clamping block 204 and the clamping groove 205, it is convenient to disassemble and replace the cutting tool 201. And through the arranged pressing plate 408, the arc-shaped plate 406 and the fixing block 402, it is convenient to install and disassemble the connecting head 304. After the filter plate 401 filters the impurities in the connecting head 304, it is convenient to remove the impurities, improving the efficiency and quality of removal.
[0039] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is only exemplary; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above. For the sake of brevity, they are not provided in detail.
[0040] The present invention aims to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A cutting device for a double-sealed gas-tight thread of an oil casing pipe, comprising: Processing table (1), on the top surface of the processing table (1), a feeding component (101) and a power component (104) are fixedly installed. One end of the feeding component (101) is fixedly installed with a fixed shaft (102), and the other end of the fixed shaft (102) is fixedly installed with a mounting shaft (103). It is characterized in that it further includes: a cutting mechanism (2), the cutting mechanism (2) is arranged on one side of the feeding component (101), the cutting mechanism (2) includes a cutting tool (201) located on one side of the mounting shaft (103), a clamping block (204) is arranged above the cutting tool (201), and the cutting mechanism (2) is used for cutting workpieces; a cooling mechanism (3), the cooling mechanism (3) is arranged on one side of the feeding component (101), the cooling mechanism (3) includes a connecting pipe (302) located on one side of the cutting tool (201), one outer wall of one end of the connecting pipe (302) is fixedly installed with a mounting sleeve (303), a connecting head (304) is arranged on one side of the mounting sleeve (303), one end of the mounting shaft (103) is fixedly penetrated and installed with a pipe (301), both the pipe (301) and the connecting pipe (302) are internally divided into two communicating holes, and the cooling mechanism (3) is used for cooling the cutting tool; a filtering mechanism (4), the filtering mechanism (4) is arranged above the processing table (1), the filtering mechanism (4) includes a filter plate (401) fixedly installed on the inner wall of the connecting head (304), two fixing blocks (402) are fixedly installed on one side of the connecting head (304), and the filtering mechanism (4) is used for filtering the coolant.
2. The cutting device for the double-sealed gas-tight thread of oil casing according to claim 1, characterized in that, A rotating pipe (105) is fixedly installed on the inner wall of the power component (104), a fixing component (106) is slidably installed on one inner wall of the rotating pipe (105), a collecting groove (5) is through - opened on the top surface of the processing table (1), and a collecting frame (6) is movably installed on the side surface of the processing table (1).
3. The cutting device for a double-sealed gas-tight threaded connection of oil and casing pipes according to claim 1, characterized in that, An installation groove (202) is opened at one end of the mounting shaft (103), the top surface of the installation groove (202) is fixedly connected with the bottom surface of the cutting tool (201) by screws. The cutting tool (201) is provided with three cutting heads. An installation column (203) is installed on the top surface of the mounting shaft (103) by bolts, the side surface of the installation column (203) is fixedly connected with the side surface of the clamping block (204), a clamping groove (205) is opened on the top surface of the cutting tool (201), and the lower end of the clamping block (204) is clamped with the clamping groove (205).
4. A cutting device for a double-sealed gas-tight thread coupling of an oil casing pipe according to claim 1, characterized in that, One end of the pipe (301) is fixedly connected with one end of the connecting pipe (302), a fixing sleeve (305) is fixedly installed on the outer wall of the connecting pipe (302), and a fixing rod (306) is fixedly installed on the outer wall of the fixing sleeve (305).
5. The cutting device for a double-sealed gas-tight thread of an oil casing pipe according to claim 4, characterized in that, The other end of the fixed rod (306) is rotatably connected to a fixed frame (307). The side surface of the fixed rod (306) is slidably connected to the inner wall of the fixed frame (307). Arc-shaped grooves (308) are respectively formed through the upper and lower side surfaces of the fixed frame (307). A fixed column (310) is fixedly and penetratingly installed on the top surface of the fixed rod (306). The outer wall of the fixed column (310) is slidably connected to the inner walls of the two arc-shaped grooves (308).
6. The cutting device for the double-sealed gas-tight thread of oil casing according to claim 5, characterized in that, An adjustment groove (311) is formed in the top surface of the fixed column (310). Two adjustment plates (312) are slidably installed on the inner wall of the adjustment groove (311). A slide rod (314) is slidably penetrated through the side surfaces of the two adjustment plates (312). Both ends of the slide rod (314) are fixedly connected to the inner wall of the adjustment groove (311). An elastic member I (315) is slidably installed on the outer wall of the slide rod (314). Both ends of the elastic member I (315) are fixedly connected to the side surfaces of the two adjustment plates (312).
7. The cutting device for a double-sealed gas-tight thread of an oil casing according to claim 6, characterized in that, Clamping columns (313) are respectively fixedly installed on the other side surfaces of the two adjustment plates (312). The other ends of the two clamping columns (313) respectively slide through the inner wall of the adjustment groove (311) and extend to the outside of the fixed column (310). A plurality of clamping holes (309) are formed in the inner wall of the arc-shaped groove (308). The clamping columns (313) are clamped with the clamping holes (309).
8. A cutting device for a double-sealed gas-tight thread connection of an oil casing pipe according to claim 1, characterized in that, The inside of the connection head (304) is provided with two communication holes. Fixing grooves (403) are respectively formed through the top surfaces of the two fixing blocks (402). Two slots (405) are formed in the side surface of the mounting sleeve (303). The outer walls of the two fixing blocks (402) are respectively slidably connected to the inner walls of the two slots (405). A chute (404) is formed inside the mounting sleeve (303). The chute (404) communicates with the two slots (405). Two arc-shaped plates (406) are slidably installed on the inner wall of the chute (404).
9. The cutting device for the double-sealed gas-tight thread of the oil casing according to claim 8, characterized in that, The two arc-shaped plates (406) are connected by an elastic member II (407) near their side surfaces. The mutually remote side surfaces of the two arc-shaped plates (406) are both wedge-shaped. One ends of the two arc-shaped plates (406) are respectively clamped with the fixing grooves (403). Pressing plates (408) are respectively fixedly installed on the outer walls of one ends of the two arc-shaped plates (406). A through groove (409) is formed through one inner wall of the chute (404). The side surfaces of the two pressing plates (408) are slidably connected to the inner wall of the through groove (409).
10. A processing method for the double-sealed gas-tight thread of oil casing pipes, applicable to the cutting device for the double-sealed gas-tight thread of oil casing pipes described in any one of claims 1-9, characterized in that, Including the following steps: S1: First, clamp and fix the workpiece, and adjust the position of the connecting head (304) so that the connecting head (304) faces the cutting tool (201); S2: Feed the coolant and the scavenging gas, and spray them from the connecting head (304) towards the cutting tool (201); S3: Start the power assembly (104) and the feed assembly (101). The power assembly (104) drives the workpiece to rotate, and the feed assembly (101) drives the cutting tool (201) to move towards the workpiece to cut the inner wall of the workpiece; S4: During the cutting process, the coolant and gas sprayed from the connecting head (304) cool the cutting tool (201) and blow away the cutting debris, so that the cutting tool (201) is cooled and the debris is not likely to block the feed path of the cutting tool (201); S5: Finally, collect the cutting debris and the coolant generated during cutting.