Reverse boring cutter device for drum-shaped deep hole machining

Abstract

The utility model relates to the technical field of machining, and provides a reverse boring cutter device for drum-shaped deep hole machining, the reverse boring cutter device comprises a cutter body, a plurality of fastening strips, a cutter head, a locking screw and a locking rod, the plurality of fastening strips are circumferentially assembled on the outer side of the middle of the cutter body, and the cutter head is assembled at the front end of the cutter body; and the tool bit is locked and fixed through a locking screw and a locking rod which are axially assembled at the front end part of the tool body. The reverse boring cutter device for drum-shaped deep hole machining has the advantages of being simple in structure, high in rigidity, good in cooling and chip removal performance, high in machining efficiency, high in precision and high in applicability, and the efficiency and quality of drum-shaped deep hole machining can be remarkably improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of machining, in particular to a reverse boring tool device for drum-shaped deep hole machining. BACKGROUND

[0002] In the field of machining, the machining of drum-shaped deep holes has always been a technical problem. The drum-shaped deep hole is a deep hole with a special structure, with smaller diameters at both ends and a larger diameter in the middle, and a relatively long overall length. This structure makes the drum-shaped deep hole face many challenges during machining. At present, the machining of drum-shaped deep holes is usually carried out on a deep hole drilling and boring machine.

[0003] However, the existing machining method has the following problems: 1. Difficulty in tool installation and positioning: due to the special structure of the drum-shaped deep hole, the tool is difficult to accurately position during installation, which not only increases the clamping time, but also may cause deviation during machining. 2. Long tool travel, insufficient rigidity: during the machining of the drum-shaped deep hole, the tool needs to move a long distance. In this case, the rigidity of the tool is often insufficient, and deviation may occur during machining, thereby affecting the machining accuracy of the hole. 3. Cooling liquid is difficult to enter, heat dissipation and chip removal problems are prominent: during the drilling of the drum-shaped deep hole, the cooling liquid is difficult to enter the hole, resulting in slow heat dissipation of the tool. At the same time, it is difficult to remove iron chips, which may accumulate in the hole, further increasing the hole diameter machining error and reducing the machining efficiency and quality. 4. Machining accuracy is difficult to guarantee: due to the combined effects of the above factors, the machining accuracy of the drum-shaped deep hole is difficult to guarantee effectively, and the machining difficulty is extremely great.

[0004] Therefore, how to design a new type of drum-shaped deep hole machining tool that is easy to install and position, improves the rigidity of the tool, and effectively solves the problems of cooling liquid entering and iron chip removal to meet the high-precision and high-efficiency machining requirements has become a technical problem to be solved. CONTENT OF THE INVENTION

[0005] Therefore, in order to overcome the shortcomings of the prior art, the present application aims to provide a reverse boring tool device for drum-shaped deep hole machining.

[0006] The present application provides a reverse boring tool device for drum-shaped deep hole machining, which comprises a tool body, a plurality of fastening strips, a tool head, a locking screw and a locking rod. The plurality of fastening strips are circumferentially assembled on the outside of the middle part of the tool body, the tool head is assembled at the front end of the tool body, and the tool head is locked and fixed by the locking screw and the locking rod axially assembled at the front end of the tool body.

[0007] Optionally, in the reverse boring tool device for drum-shaped deep hole machining of the present application, the overall shaft-shaped tool body is composed of an integrated loading part, a supporting part and a connecting part, and the tail end of the loading part is provided with a through loading hole in the radial direction.

[0008] Optionally, in the drum-shaped deep hole machining reverse boring tool device of the present application, the inner side axial center of the loading part is provided with a first locking hole, and the outer side of the first locking hole is provided with a parallel second locking hole, and the first locking hole and the second locking hole are respectively connected with the loading hole.

[0009] Optionally, in the drum-shaped deep hole machining reverse boring tool device of the present application, the tool head is assembled in the loading hole of the tool body, the locking screw is assembled in the first locking hole of the tool body, and the locking rod is assembled in the second locking hole of the tool body.

[0010] Optionally, in the drum-shaped deep hole machining reverse boring tool device of the present application, the locking screw is threadedly assembled with the first locking hole, and the locking rod is threadedly assembled with the second locking hole.

[0011] Optionally, in the drum-shaped deep hole machining reverse boring tool device of the present application, a plurality of fastening grooves are circumferentially distributed on the outer side of the supporting part, and a plurality of fastening strips are correspondingly assembled in the fastening grooves of the tool body.

[0012] Optionally, in the drum-shaped deep hole machining reverse boring tool device of the present application, the outer side surface of the fastening strip is a circular arc surface, and the curvature of the circular arc surface is equal to the curvature of the outer side surface of the supporting part of the tool body.

[0013] Optionally, in the drum-shaped deep hole machining reverse boring tool device of the present application, a long through groove is arranged on the outer side of the supporting part of the tool body.

[0014] The drum-shaped deep hole machining reverse boring tool device of the present application has the following beneficial technical effects:

[0015] 1. The structure design is simple, the number of parts is small, and the overall structure is compact, which not only reduces the manufacturing cost, but also reduces the assembly error and failure risk caused by complex structure, and at the same time, the operation and maintenance process of the tool is more convenient, greatly improving the work efficiency.

[0016] 2. The tool stiffness is significantly improved by optimizing the structure design of the tool, which effectively enhances the stiffness of the tool. In the deep hole machining process, especially in the machining of drum-shaped deep holes, the tool can withstand greater cutting force, reduce the machining error caused by tool deformation, and ensure the machining precision and surface quality.

[0017] 3. Efficient cooling and chip removal can be realized, which can ensure that the cooling liquid smoothly enters the machining area and the iron chips are smoothly discharged. The sufficient supply of cooling liquid can effectively reduce the temperature of the tool and the workpiece, reduce thermal deformation, and prolong the service life of the tool. Good chip removal performance avoids the interference of iron chip accumulation on the machining process, further improving the machining efficiency and surface quality.

[0018] 4. The drum-shaped deep hole machining tool can complete the drum-shaped deep hole machining in one pass, reducing the machining process and tool changing time, avoiding the cumulative error caused by multiple machining, and significantly improving the machining efficiency and accuracy.

[0019] 5. The drum-shaped deep hole machining tool is suitable for deep hole drilling and boring machines and can adapt to the machining requirements of drum-shaped deep holes of different sizes and shapes, having wide applicability. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 FIG. 1 is a structural example diagram of a drum-shaped deep hole machining counter-boring tool device according to an embodiment of the present application;

[0022] Figure 2 FIG. 2 is a structural example diagram of a tool body of a drum-shaped deep hole machining counter-boring tool device according to an embodiment of the present application;

[0023] Figure 3 FIG. 3 is a partial structural cross-sectional example diagram of a drum-shaped deep hole machining counter-boring tool device according to an embodiment of the present application;

[0024] Figure 4 FIG. 4 is an application example diagram of a drum-shaped deep hole machining counter-boring tool device according to an embodiment of the present application;

[0025] In the figure, 1 is a tool body, 2 is a fastening strip, 3 is a tool head, 4 is a locking screw, 5 is a locking rod, 11 is a loading part, 12 is a supporting part, 13 is a connecting part, 14 is a loading hole, 15 is a first locking hole, 16 is a second locking hole, 17 is a fastening groove, 18 is a long through groove, and 6 is a part to be machined. DETAILED DESCRIPTION

[0026] The embodiments of the present application will be described in detail below with reference to the drawings.

[0027] It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict; and all other embodiments obtained by those skilled in the art based on the embodiments in the present disclosure without creative labor are within the scope of protection of the present disclosure.

[0028] It is important to note that the various aspects described hereinafter pertain to embodiments within the scope of the appended claims. It should be apparent that the aspects described herein can be embodied in a wide variety of forms and that any specific structure and / or function described herein is merely illustrative. Based on the teachings herein one skilled in the art should appreciate that an aspect described herein can be implemented independently of any other aspects and that an aspect described herein can be implemented both as any number of software and / or hardware structures and as any number of processes and / or operations. For example, an aspect can be implemented as a software program to be run on a computer system or any other desired device or combination of devices. In addition, any combination of one or more aspects can be implemented. For example, one aspect can be implemented as a software program to be run on a computer system or any other desired device or combination of devices.

[0029] Figure 1 A structure example diagram of a drum-shaped deep hole machining counter-boring tool device according to an embodiment of the present application is shown in Figure 1 In this embodiment, the drum-shaped deep hole machining counter-boring tool device includes a tool body 1, a plurality of fastening strips 2, a tool head 3, a locking screw 4, and a locking rod 5. The plurality of fastening strips 2 are circumferentially assembled on the outside of the middle part of the tool body 1. The tool head 3 is assembled at the front end of the tool body 1. The tool head 3 is locked and fixed by the locking screw 4 and the locking rod 5 which are axially assembled at the front end of the tool body 1.

[0030] Figure 2 A structure example diagram of a tool body of a drum-shaped deep hole machining counter-boring tool device according to an embodiment of the present application is shown in Figure 1 and Figure 2 In this embodiment, the tool body 1 which is in the shape of a whole shaft is composed of a loading part 11, a supporting part 12, and a connecting part 13 which are connected integrally. A through loading hole 14 is radially arranged at the tail end of the loading part 11. A first locking hole 15 is arranged at the inside of the axial center of the loading part 11. A second locking hole 16 which is parallel to the first locking hole 15 is arranged at the outside of the first locking hole 15. The first locking hole 15 and the second locking hole 16 are respectively connected with the loading hole 14. A plurality of fastening grooves 17 are circumferentially distributed at the outside of the supporting part 12. In this embodiment, the connecting part 13 of the tool body 1 is connected with the drill pipe of the deep hole drilling and boring machine. The tool body 1 can be made of 40Cr alloy steel and the strength of the tool body 1 can be improved by a quenching and tempering heat treatment process.

[0031] Figure 3 A partial structure cross-section example diagram of a drum-shaped deep hole machining counter-boring tool device according to an embodiment of the present application is shown in Figures 1 to 3 In actual application, a long through groove 18 is arranged at the outside of the supporting part 12 of the tool body 1. In this embodiment, the long through groove 18 of the tool body 1 is used for the entry of cooling liquid and the discharge of debris during machining.

[0032] Figure 4 An application example diagram of a drum-shaped deep hole machining counter-boring tool device according to an embodiment of the present application is shown inFigures 1 to 4 As shown in the drawings, in this embodiment, the tool head 3 is assembled in the loading hole 14 of the tool body 1, the locking screw 4 is assembled in the first locking hole 15 of the tool body 1, and the locking rod 5 is assembled in the second locking hole 16 of the tool body 1. For example, the locking screw 4 is threadedly assembled with the first locking hole 15, and the locking rod 5 is threadedly assembled with the second locking hole 16. In actual application, the inner end of the locking rod 5 is used to tightly press the upper end of the tool head 3, so that the tool head 3 moves downward to reach the machining position.

[0033] A plurality of fastening strips 2 are correspondingly assembled in the fastening grooves 17 of the tool body 1, and the outer side of the fastening strip 2 is a circular arc surface with the same curvature as the outer side of the supporting portion 12 of the tool body 1. In actual application, the fastening strip 2 can be made of hard alloy such as YG8 hard alloy material, and the circular arc surface of the fastening strip 2 cooperates with the inner side gap of the workpiece to position and support the tool body 1, thereby ensuring the rigidity of the tool body 1. In actual application, the fastening strip 2 can also be fixed in the fastening groove 17 by welding.

[0034] In use of the drum-shaped deep hole machining reverse boring tool device, the tool head 3 is first fixed in the loading hole 14 of the tool body 1 by the locking screw 4, then the tail end of the tool body 1 is screwed into the drill pipe connection of the deep hole drill boring machine, and then the tool body 1 is inserted into the workpiece 6 along the guide hole of the workpiece 6 to reach the machining position. The locking screw 4 is loosened, the tool head 3 freely falls to the machining position under the action of gravity, the locking rod 5 is rotated to tightly press the upper end of the tool head 3, it is confirmed that the tool head 3 has reached the machining position, and then the tool head 3 is fastened by the locking screw 4. The machine tool is operated for reverse boring, and the designed drum-shaped deep hole can be machined.

[0035] In actual application, the drum-shaped deep hole machining reverse boring tool device has the following beneficial technical effects:

[0036] 1. The structure design is simple, the number of parts is small, the overall structure is compact, which not only reduces the manufacturing cost, but also reduces the assembly error and fault risk caused by complex structure, and at the same time, the operation and maintenance process of the tool is more convenient, which greatly improves the work efficiency.

[0037] 2. The tool rigidity is significantly improved. By optimizing the structure design of the tool, the rigidity of the tool is effectively enhanced. In the deep hole machining process, especially in the machining of drum-shaped deep hole, the tool can withstand greater cutting force, reduce the machining error caused by tool deformation, and thus ensure the machining precision and surface quality.

[0038] 3. Efficient cooling and chip removal can be achieved, which can ensure smooth entry of cooling liquid into the machining area and smooth discharge of iron chips. The sufficient supply of cooling liquid can effectively reduce the temperature of the tool and workpiece, reduce thermal deformation, and prolong the service life of the tool. Good chip removal performance avoids the interference of iron chip accumulation on the machining process, further improving the machining efficiency and surface quality.

[0039] 4. Drum-shaped deep hole machining can be completed at one time, which not only reduces the machining process and tool changing time, but also avoids the cumulative error caused by multiple machining, significantly improving the machining efficiency and machining precision.

[0040] 5. It is suitable for drum-shaped deep hole machining of deep hole drilling and boring machines, and can adapt to the machining requirements of drum-shaped deep holes of different sizes and shapes, and has wide applicability.

[0041] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed by the present application can be easily thought of by those skilled in the art, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A reverse boring tool device for machining drum-shaped deep holes, characterized in that, The device includes a blade body, multiple fastening strips, a blade head, a locking screw, and a locking rod. The multiple fastening strips are circumferentially assembled on the outer side of the middle part of the blade body, and the blade head is assembled on the front end of the blade body. The blade head is locked and fixed by the locking screw and locking rod axially assembled on the front end of the blade body.

2. The reverse boring tool device for machining drum-shaped deep holes according to claim 1, characterized in that, The shaft-shaped cutter body is composed of an integrally connected loading part, support part, and connecting part, with a through loading hole radially provided at the tail end of the loading part.

3. The reverse boring tool device for machining drum-shaped deep holes according to claim 2, characterized in that, A first locking hole is provided at the axial center of the inner side of the loading part, and a parallel second locking hole is provided on the outer side of the first locking hole. The first locking hole and the second locking hole are respectively connected to the loading hole.

4. The reverse boring tool device for machining drum-shaped deep holes according to claim 3, characterized in that, The cutting head is assembled in the loading hole of the cutting body, the locking screw is assembled in the first locking hole of the cutting body, and the locking rod is assembled in the second locking hole of the cutting body.

5. The reverse boring tool device for machining drum-shaped deep holes according to claim 4, characterized in that, The locking screw is threaded into the first locking hole, and the locking rod is threaded into the second locking hole.

6. The reverse boring tool device for machining drum-shaped deep holes according to claim 1, characterized in that, Multiple fastening grooves are distributed around the outer circumference of the support section, and multiple fastening strips are fitted into the fastening grooves of the cutter body one by one.

7. The reverse boring tool device for machining drum-shaped deep holes according to claim 6, characterized in that, The outer surface of the fastening strip is an arc surface, and the curvature of this arc surface is equal to the curvature of the outer surface of the support part of the blade body.

8. The reverse boring tool device for machining drum-shaped deep holes according to claim 1, characterized in that, A long through groove is provided on the outer side of the support part of the blade body.

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