Inner blind hole cutting machining structure of petroleum perforating gun

Abstract

The utility model relates to the technical field of cutting tools, and discloses a petroleum perforating gun inner blind hole cutting machining structure which comprises a tool bar, a tool bit and a connecting piece are arranged at the left end and the right end of the tool bar respectively, cutting edges are assembled in the middle of the tool bit in a bilateral symmetry mode, and a cooling assembly is arranged in the middle of the tool bar. A fixing assembly is arranged between the cutter bar and the connecting piece, the cooling assembly comprises a chip removal groove, the chip removal groove is formed in the outer side of the cutter bar, an input hole is formed in the cutter bar, an output hole is formed in the chip removal groove, the fixing assembly comprises a sliding groove, the sliding groove is formed in the outer side of the cutter bar, and the sliding groove is communicated with the input hole. The inner wall of the connecting piece is fixedly connected with a protruding block, and the protruding block is connected to the middle of the sliding groove in a sliding mode. According to the utility model, under the cooperation of the input hole, the output hole, the chip removal groove, the anti-blocking net and other structures, the function of improving the overall cooling effect of the structure is realized, the chip removal performance is improved, and the machining stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, in particular to a blind hole cutting processing structure in a petroleum perforating gun. Background Art

[0002] Blind holes in oil perforating guns refer to a hole-like structure with only one end open and the other end closed, which is formed on a specific part of the oil perforating gun. Blind holes in oil perforating guns usually require appropriate machine tools and special blind hole processing machines to ensure processing accuracy and efficiency.

[0003] In the existing technology, the blind hole cutting processing structure inside the oil perforating gun achieves efficient and precise processing of blind holes inside the oil perforating gun through the coordinated action of the tool's rotary cutting, feed motion, cooling and chip removal, and control system. Although it can provide good processing quality, it has the disadvantage that the cutting operation will generate high temperature and require cooling. The existing processing structure usually adopts an external water cooling method in the tool. The cooling effect of the blind hole cutting area is better, but the tool itself lacks a heat dissipation cold water method, which causes heat accumulation in the tool itself, resulting in increased thermal stress of the tool, tool deformation, and reduced dimensional accuracy, which in turn affects the processing quality. Therefore, a blind hole cutting processing structure inside the oil perforating gun is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a blind hole cutting processing structure inside the petroleum perforating gun, aiming to improve the problem that the tool itself in the existing technology has no protection of heat dissipation and cooling structure, resulting in increased thermal stress of the tool, tool deformation, reduced dimensional accuracy, and affecting the processing quality.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A blind hole cutting structure in a petroleum perforating gun includes a cutter bar, a cutter head and a connector are provided at the left and right ends of the cutter bar, a cutting edge is symmetrically mounted on the middle of the cutter head, a cooling assembly is provided in the middle of the cutter bar, and a fixing assembly is provided between the cutter bar and the connector;

[0007] The cooling assembly includes a chip removal groove, the chip removal groove is opened on the outside of the tool rod, the tool rod is provided with an input hole inside, and the chip removal groove is provided with an output hole;

[0008] As a further description of the above technical solution:

[0009] The fixing assembly includes a slide groove, which is provided on the outer side of the knife rod, a protrusion is fixedly connected to the inner wall of the connecting piece, and the protrusion is slidably connected to the middle part of the slide groove, a bolt is provided in the middle part of the connecting piece, and a screw hole is provided inside the knife rod;

[0010] As a further description of the above technical solution:

[0011] The cooling assembly further includes an anti-blocking net, which is mounted on the inner wall of the output hole;

[0012] As a further description of the above technical solution:

[0013] The output holes and the anti-blocking net are specifically provided in plurality, and the plurality of output holes and the plurality of anti-blocking nets are evenly distributed in the middle of the chip discharge groove, and the input hole and the anti-blocking net are connected together;

[0014] As a further description of the above technical solution:

[0015] A positioning groove is provided inside the cutter head, and the blade is slidably mounted in the middle of the positioning groove;

[0016] As a further description of the above technical solution:

[0017] The blade is provided with a coating inside, and the material of the coating is specifically set to be titanium carbonitride to provide the coating with toughness, low friction coefficient and chemical stability;

[0018] As a further description of the above technical solution:

[0019] A heat-stabilizing layer is provided on the top of the coating, and the material of the heat-stabilizing layer is specifically set to be titanium aluminum nitride to provide the heat-stabilizing layer with oxidation resistance and thermal stability;

[0020] As a further description of the above technical solution:

[0021] A wear-resistant layer is provided on the top of the thermal stability layer. The material of the wear-resistant layer is specifically set to be tungsten carbide, so as to provide the wear resistance and toughness of the wear-resistant layer.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the present invention, the chip groove and the tool bar are cooled by transporting cooling water through the input hole to the output hole. An anti-blocking net is provided to protect large chips and prevent the anti-blocking net from being blocked, thereby improving the stability of the tool bar cooling, effectively improving the overall cooling effect of the structure, improving the chip removal performance, and thus improving the stability of the processing.

[0024] 2. In the present invention, the tool rod is vertically inserted into the connector, the protrusion is inserted into the entrance of the slide groove, and the tool rod is rotated. The tool rod drives the protrusion to slide into the deep of the slide groove to complete the positioning of the tool rod and the connector. The bolt is screwed into the screw hole and tightened. The tool rod and the connector are quickly docked and fixed, which improves the adaptability to different processing requirements, reduces the labor intensity of personnel, and improves work efficiency.

[0025] 3. In the utility model, a composite structure of the blade is formed by arranging a wear-resistant layer, a heat-stable layer and a coating, thereby achieving an optimized combination of multiple properties of the blade, such as high strength, high hardness, wear resistance, and low friction coefficient, thereby improving the cutting performance and service life of the tool, and improving the processing accuracy and surface quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional schematic diagram of the blind hole cutting processing structure in the petroleum perforating gun proposed by the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the blade of the blind hole cutting structure in the petroleum perforating gun proposed by the present invention;

[0028] Figure 3 This is a structural diagram of the input hole of the blind hole cutting structure in the petroleum perforating gun proposed by the present invention;

[0029] Figure 4 This is a structural schematic diagram of the base layer of the blind hole cutting processing structure in the petroleum perforating gun proposed by the utility model.

[0030] Legend:

[0031] 1. Tool bar; 2. Connecting parts; 3. Tool head; 4. Blade; 5. Positioning groove; 6. Cooling component; 7. Chip groove; 8. Output hole; 9. Anti-blocking net; 10. Input hole; 11. Fixing component; 13. Slide; 14. Bump; 15. Bolt; 16. Screw hole; 17. Wear-resistant layer; 18. Heat-stabilizing layer; 19. Coating. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0033] Reference Figure 1-Figure 3The utility model provides an embodiment of a blind hole cutting processing structure in a petroleum perforating gun, comprising a tool rod 1 for connecting a tool head 3 and a connecting piece 2 to improve the stability of the overall structure. The tool rod 1 is provided with a tool head 3 and a connecting piece 2 at the left and right ends respectively. The tool head 3 is used to assemble a blade 4 to improve the assembly flexibility of the blade 4. The middle part of the tool head 3 is symmetrically equipped with blades 4. Multiple blades 4 cyclically and alternately contact the workpiece, thereby improving the overall cutting efficiency and reducing the loss of the blade 4. A cooling component 6 is provided in the middle part of the tool rod 1 for cooling the tool rod 1 to ensure the quality of the operation. A fixing component 11 is provided between the tool rod 1 and the connecting piece 2 for quickly positioning and fixing the tool rod 1 and the connecting piece 2.

[0034] The cooling assembly 6 includes a chip groove 7, which is used to improve the efficiency of chip discharge during operation and ensure the working environment. The chip groove 7 is opened on the outside of the tool rod 1, and an input hole 10 is opened inside the tool rod 1 for injecting fluid or gas to cool the interior and the surface of the chip groove 7, thereby improving heat dissipation efficiency and ensuring operation stability. The chip groove 7 is opened with an output hole 8 for outputting cooling fluid or air.

[0035] Reference Figure 2 and Figure 3 The fixing component 11 includes a slide groove 13, which is used to position and guide the protrusion 14, improve the positioning effect, and is convenient and quick. No manual calibration is required, and the connection work can be performed directly, which effectively improves the assembly efficiency and thus improves the working efficiency. The slide groove 13 is opened on the outside of the knife rod 1, and the inner wall of the connector 2 is fixedly connected with a protrusion 14. The protrusion 14 is slidably connected to the middle of the slide groove 13, and a bolt 15 is provided in the middle of the connector 2. The bolt 15 and the screw hole 16 cooperate to fix and disassemble the knife rod 1 and the connector 2. It is simple, convenient, and reliable to fix. A screw hole 16 is opened inside the knife rod 1.

[0036] Reference Figure 1-Figure 4The cooling assembly 6 also includes an anti-blocking net 9, which is assembled on the inner wall of the output hole 8. The anti-blocking net 9 is adapted to the size of the output hole 8, which can prevent external debris from blocking the output hole 8 and improve the reliability of cooling and heat dissipation. The output hole 8 and the anti-blocking net 9 are specifically provided with multiple output holes 8 and multiple anti-blocking nets 9. Multiple output holes 8 and multiple anti-blocking nets 9 are evenly distributed in the middle of the chip groove 7. The input hole 10 is connected with the anti-blocking net 9. Multiple output holes 8 and multiple anti-blocking nets 9 correspond one to one to improve the heat dissipation and anti-blocking effects. A positioning groove 5 is opened inside the cutter head 3, and the blade 4 is slidably assembled in the positioning groove. In the middle of the groove 5, the positioning groove 5 is convenient for assembling the blade 4. A coating 19 is provided inside the blade 4. The material of the coating 19 is specifically set to titanium carbonitride to provide the coating 19 with toughness, low friction coefficient and chemical stability. A heat-stable layer 18 is provided on the top of the coating 19. The material of the heat-stable layer 18 is specifically set to titanium aluminum nitride to provide the heat-stable layer 18 with oxidation resistance and thermal stability. A wear-resistant layer 17 is provided on the top of the heat-stable layer 18. The material of the wear-resistant layer 17 is specifically set to tungsten carbide to provide wear resistance and toughness to the wear-resistant layer 17.

[0037] Working principle: First, cooling water is transported through the input hole 10 to the output hole 8 to cool the tool bar 1 body. A chip groove 7 is provided to improve the chip discharge effect. An anti-blocking net 9 is provided to protect large chips and prevent the anti-blocking net 9 from being blocked, thereby improving the cooling stability of the tool bar 1. The connecting piece 2 drives the tool bar 1 to rotate, the tool bar 1 drives the cutter head 3 to rotate, the cutter head 3 drives the blade 4, and the blade 4 performs the cutting operation on the workpiece;

[0038] Secondly, during assembly, the knife bar 1 is vertically inserted into the connector 2 so that the protrusion 14 is inserted into the entrance of the slide groove 13. Then, the knife bar 1 is rotated, and the knife bar 1 drives the protrusion 14 to slide deep into the slide groove 13, completing the positioning of the knife bar 1 and the connector 2. Then, the bolt 15 is screwed into the screw hole 16 and tightened to complete the quick docking and fixing of the knife bar 1 and the connector 2.

[0039] Again, through the composite layer setting of the wear-resistant layer 17, the heat-stable layer 18, and the coating 19, an optimized combination of multiple properties such as high strength, high hardness, wear resistance, and low friction coefficient of the blade 4 is achieved, thereby improving the cutting performance and service life of the blade 4.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A blind hole cutting structure for a petroleum perforating gun, comprising a cutter bar (1), characterized in that: The left and right ends of the knife rod (1) are respectively provided with a knife head (3) and a connecting piece (2); the middle part of the knife head (3) is symmetrically equipped with a blade (4); the middle part of the knife rod (1) is provided with a cooling component (6); and a fixing component (11) is provided between the knife rod (1) and the connecting piece (2); The cooling assembly (6) includes a chip removal groove (7), the chip removal groove (7) is opened on the outside of the tool rod (1), an input hole (10) is opened inside the tool rod (1), and an output hole (8) is opened on the chip removal groove (7).

2. The blind hole cutting structure in a petroleum perforating gun according to claim 1, characterized in that: The fixing assembly (11) includes a slide groove (13), the slide groove (13) is opened on the outer side of the knife rod (1), the inner wall of the connecting member (2) is fixedly connected with a protrusion (14), the protrusion (14) is slidably connected to the middle part of the slide groove (13), a bolt (15) is provided in the middle part of the connecting member (2), and a screw hole (16) is opened inside the knife rod (1).

3. The blind hole cutting structure in a petroleum perforating gun according to claim 1, characterized in that: The cooling assembly (6) further comprises an anti-blocking net (9), and the anti-blocking net (9) is assembled on the inner wall of the output hole (8).

4. The blind hole cutting structure in a petroleum perforating gun according to claim 3, characterized in that: The output holes (8) and the anti-blocking nets (9) are specifically provided in plurality, and the plurality of output holes (8) and the plurality of anti-blocking nets (9) are evenly distributed in the middle of the chip discharge groove (7), and the input hole (10) and the anti-blocking nets (9) are connected together.

5. The blind hole cutting structure in a petroleum perforating gun according to claim 1, characterized in that: A positioning groove (5) is provided inside the cutter head (3), and the blade (4) is slidably assembled in the middle of the positioning groove (5).

6. The blind hole cutting structure in a petroleum perforating gun according to claim 1, characterized in that: A coating (19) is provided inside the blade (4), and the material of the coating (19) is specifically set to be titanium carbonitride, so as to provide the coating (19) with toughness, low friction coefficient and chemical stability.

7. The blind hole cutting structure in a petroleum perforating gun according to claim 6, characterized in that: A heat-stable layer (18) is provided on the top of the coating (19), and the material of the heat-stable layer (18) is specifically set to be titanium aluminum nitride, so as to provide the heat-stable layer (18) with oxidation resistance and thermal stability.

8. The blind hole cutting structure in a petroleum perforating gun according to claim 7, characterized in that: A wear-resistant layer (17) is provided on the top of the thermal stability layer (18), and the material of the wear-resistant layer (17) is specifically set to be tungsten carbide, so as to provide the wear-resistant layer (17) with wear resistance and toughness.

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