Coarse and fine integrated boring head for inner hole of thin-wall cylinder barrel

Abstract

The utility model discloses a thin-wall cylinder barrel inner hole rough and fine integrated boring head which comprises a cutter handle and an installation seat, the cutter handle is detachably connected with the installation seat, two sliding rods are installed on the installation seat in a sliding and penetrating mode, and the two sliding rods are located on the same straight line. The ends, located outside the installation base, of the two sliding rods are fixedly connected with a rough boring tool apron and a fine boring tool apron correspondingly, and blades are installed on the rough boring tool apron and the fine boring tool apron correspondingly. According to the utility model, the rough boring tool apron and the fine boring tool apron are almost symmetrically distributed on the two sides of the mounting seat, so that the mass distribution of the tool is more uniform, the dynamic balance performance of the tool during high-speed rotation is improved, the flutter in the cutting process is reduced, and the processing progress and the surface quality are guaranteed; and the two sliding rods can be driven to move at the same time through cooperation of the two-way screw and the half nuts, so that the distance between the blade and the mounting base is adjusted, thin-wall cylinder barrels with different hole diameters can be conveniently machined, and the using effect is good.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically a boring head for roughing and finishing thin-walled cylinder bores. Background Technology

[0002] Thin-walled cylinder barrels are an important component of hydraulic cylinders. During their production and processing, the inner wall needs to be rough-bored and fine-bored. In the existing technology, the rough boring head and the fine boring head need to be installed on two tool holders respectively. That is, when rough-boring and fine-boring the thin-walled cylinder barrel, two feed and two retraction steps are required, and the tool needs to be changed in the middle, resulting in low processing efficiency.

[0003] A search revealed that patent CN220739497U discloses an integrated roughing and finishing boring tool with rapid adjustment. This tool, through a combination of a chamfering head, a finishing boring head, and a roughing boring head, enables multi-stage machining of holes on a part in a single operation without tool changes, saving machining time. Compared to existing technologies, the tool allows for adjustment of the mounting strip's extension length within the mounting positioning groove by sliding adjustment within the mounting seat. This allows for adjustment of the distance the chamfering head, finishing boring head, and roughing boring head extend from one side of the integrated boring tool, accommodating the machining of holes with different diameters within a certain range.

[0004] Although the above solution can achieve one-time machining of multiple holes by setting chamfering cutter heads, fine boring cutter heads, and rough boring cutter heads, and can adjust the position of the cutter heads to facilitate machining different hole diameters, in actual use, because multiple cutter heads are located on one side of the tool holder, the dynamic balance of the tool is poor when rotating at high speed, which will cause chatter during the cutting process, thus affecting the machining accuracy and surface quality, and needs to be improved. Utility Model Content

[0005] The purpose of this invention is to provide an integrated roughing and finishing boring head for thin-walled cylinder bores to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A thin-walled cylinder bore roughing and finishing boring head includes a tool holder and a mounting base. The tool holder and the mounting base are detachably connected, and two sliding rods are slidably mounted on the mounting base. The two sliding rods are located on the same straight line. A roughing tool holder and a finishing tool holder are respectively fixedly connected to the ends of the two sliding rods outside the mounting base. A cutting tool is mounted on both the roughing tool holder and the finishing tool holder. A bidirectional screw is rotatably mounted on the outer peripheral wall of the mounting base. A half-nut is fixedly connected to the outer wall of each sliding rod inside the mounting base, and the half-nut cooperates with the bidirectional screw.

[0008] As a further embodiment of this utility model: the bottom end of the mounting base is provided with a first sliding groove, the two sliding rods are slidably installed in the first sliding groove, the bottom end of the mounting base is fixedly connected with a cover plate, and the mounting base is provided with two second sliding grooves that communicate with the first sliding groove, and the half nut is slidably installed in the corresponding second sliding groove.

[0009] As a further embodiment of this utility model: the outer wall of the mounting base and the corresponding positions of the two sliding rods are provided with multiple set screws through screw holes.

[0010] As a further embodiment of this utility model, it also includes an extension rod, and the knife handle and the mounting base are both detachably connected to the extension rod.

[0011] As a further embodiment of this utility model: the bottom end of the knife handle and the extension rod are both provided with positioning grooves, and the top end of the mounting base and the extension rod are both fixedly provided with positioning seats. The size of the positioning seats is adapted to the positioning grooves. The outer walls of the knife handle and the extension rod are fitted with grommets at the corresponding positions of the positioning grooves. The outer wall of the positioning seats is provided with threaded holes adapted to the grommets.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, since the roughing tool holder and the finishing tool holder are nearly symmetrically distributed on both sides of the mounting base, the mass distribution of the tool can be made more uniform, thereby improving the dynamic balance performance of the tool when rotating at high speed, reducing chatter during the cutting process, and thus ensuring machining progress and surface quality. By rotating the bidirectional screw, the two sliding rods can be driven to move simultaneously by the cooperation of the bidirectional screw and the half nut to adjust the distance between the cutting tool and the mounting base, thus facilitating the machining of thin-walled cylinders with different hole diameters, resulting in good performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a boring head for roughing and finishing the inner bore of a thin-walled cylinder.

[0015] Figure 2 for Figure 1 A sectional view.

[0016] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0017] The components include: tool holder 1, extension rod 2, mounting base 3, positioning groove 4, positioning base 5, grommet screw 6, threaded hole 7, first slide groove 8, slide rod 9, rough boring tool holder 10, fine boring tool holder 11, cutting blade 12, cover plate 13, second slide groove 14, half nut 15, double-ended screw 16, and set screw 17. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-3 In this embodiment of the present invention, a thin-walled cylinder bore roughing and finishing integrated boring head includes a tool holder 1 and a mounting base 3. The tool holder 1 and the mounting base 3 are detachably connected, and two sliding rods 9 are slidably mounted on the mounting base 3. The two sliding rods 9 are located on the same straight line. A roughing tool holder 10 and a finishing tool holder 11 are respectively fixedly connected to one end of each sliding rod 9 outside the mounting base 3. Both the roughing tool holder 10 and the finishing tool holder 11 are equipped with cutting blades 12. The bottom end of the cutting tool 12 on the rough boring tool holder 10 is lower than the bottom end of the cutting tool 12 on the fine boring tool holder 11, so that the cutting tool 12 on the rough boring tool holder 10 contacts the workpiece first during boring. A double-ended screw 16 is rotatably installed on the outer peripheral wall of the mounting base 3. Both ends of the double-ended screw 16 are provided with internal hexagonal holes. The slide rod 9 is fixedly connected to the outer wall inside the mounting base 3 with half nuts 15. The half nuts 15 cooperate with the double-ended screw 16.

[0020] By adopting the above-mentioned scheme, the rough boring tool holder 10 and the fine boring tool holder 11 are nearly symmetrically distributed on both sides of the mounting base 3, thus making the mass distribution of the tool more uniform. This improves the dynamic balance performance of the tool when rotating at high speed, reduces chatter during the cutting process, and ensures machining progress and surface quality. By rotating the bidirectional screw 16, the two sliding rods 9 can be driven to move simultaneously by the cooperation of the bidirectional screw 16 and the half nut 15, so as to adjust the distance between the cutting tool 12 and the mounting base 3. This facilitates the machining of thin-walled cylinders with different hole diameters and has good performance.

[0021] Specific combination Figure 3 In one embodiment of the present invention, the bottom end of the mounting base 3 is provided with a first sliding groove 8, and the two sliding rods 9 are slidably installed in the first sliding groove 8. The bottom end of the mounting base 3 is fixedly connected with a cover plate 13. The mounting base 3 is provided with two second sliding grooves 14 that communicate with the first sliding groove 8, and the half nut 15 is slidably installed in the corresponding second sliding groove 14.

[0022] Specific combination Figure 1In one embodiment of this utility model, the outer wall of the mounting base 3 and the corresponding positions of the two slide rods 9 are provided with multiple set screws 17 through screw holes. By tightening the set screws 17, the slide rods 9 can be locked in the first slide groove 8, preventing the slide rods 9 from moving in the first slide groove 8 during the cutting process, thereby ensuring the stability of the blade 12.

[0023] Specific combination Figure 1 and Figure 2 In one embodiment of this utility model, an extension rod 2 is also included, and the knife handle 1 and the mounting base 3 are both detachably connected to the extension rod 2.

[0024] Furthermore, the bottom ends of the knife handle 1 and the extension rod 2 are provided with positioning grooves 4, and the top ends of the mounting base 3 and the extension rod 2 are fixedly provided with positioning seats 5. The positioning seats 5 are adapted to the size of the positioning grooves 4. The outer walls of the knife handle 1 and the extension rod 2 are fitted with granulator screws 6 at the corresponding positions of the positioning grooves 4. The outer wall of the positioning seat 5 is provided with threaded holes 7 adapted to the granulator screws 6.

[0025] The extension rod 2 facilitates the processing of thin-walled cylinders of different lengths. The positioning groove 4, positioning seat 5, grommets 6, and threaded holes 7 facilitate quick assembly and disassembly of the tool holder 1, extension rod 2, and mounting seat 3.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A boring head for roughing and finishing thin-walled cylinder bores, characterized in that: The tool includes a tool holder (1) and a mounting base (3). The tool holder (1) and the mounting base (3) are detachably connected. Two slide rods (9) are slidably installed on the mounting base (3). The two slide rods (9) are located on the same straight line. The ends of the two slide rods (9) located outside the mounting base (3) are respectively fixedly connected to a rough boring tool holder (10) and a fine boring tool holder (11). Both the rough boring tool holder (10) and the fine boring tool holder (11) are equipped with cutting blades (12). A double-ended screw (16) is rotatably installed on the outer peripheral wall of the mounting base (3). Half nuts (15) are fixedly connected to the outer wall of the slide rods (9) located inside the mounting base (3). The half nuts (15) cooperate with the double-ended screw (16).

2. The thin-walled cylinder bore roughing and finishing integrated boring head according to claim 1, characterized in that: The bottom end of the mounting base (3) is provided with a first sliding groove (8), and the two sliding rods (9) are slidably installed in the first sliding groove (8). The bottom end of the mounting base (3) is fixedly connected with a cover plate (13). The mounting base (3) has two second sliding grooves (14) that are connected to the first sliding groove (8), and the half nut (15) is slidably installed in the corresponding second sliding groove (14).

3. The integral roughing and finishing boring head for thin-walled cylinder bores according to claim 1, characterized in that: The outer wall of the mounting base (3) and the corresponding positions of the two slide rods (9) are provided with multiple set screws (17) through screw holes.

4. The integral roughing and finishing boring head for thin-walled cylinder bores according to claim 1, characterized in that: It also includes an extension rod (2), and the knife handle (1) and the mounting base (3) are detachably connected to the extension rod (2).

5. The integral roughing and finishing boring head for thin-walled cylinder bores according to claim 4, characterized in that: The bottom ends of the knife handle (1) and the extension rod (2) are provided with positioning grooves (4), and the top ends of the mounting base (3) and the extension rod (2) are fixedly provided with positioning seats (5). The size of the positioning seats (5) is adapted to the positioning grooves (4). The outer walls of the knife handle (1) and the extension rod (2) are fitted with granulator screws (6) at the corresponding positions of the positioning grooves (4). The outer wall of the positioning seats (5) is provided with threaded holes (7) adapted to the granulator screws (6).

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