Boring bar device for deep hole machining
By designing a worm gear transmission system and a figure-eight adjustment groove inside the support housing, dynamic adjustment of the boring bar's outer diameter was achieved, solving the problem of the limited applicability of the boring bar and improving machining efficiency.
Patent Information
- Application Number
- CN202521127763.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-06-04
AI Technical Summary
Existing boring bar devices cannot be adjusted in real time according to different hole diameters, resulting in limited applicability and time-consuming replacement process, which affects work efficiency.
A boring bar device comprising a support shell, a drive assembly, an adjustment assembly, and a boring bar assembly is designed. The outer diameter of the boring bar is dynamically adjusted through a worm gear transmission system and a figure-eight adjustment groove, while a limiting assembly ensures stability.
It enables flexible adjustment of the boring bar's outer diameter, expands its applicability, reduces replacement time, and improves work efficiency.
Smart Images

Figure CN223932626U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of deep hole machining technology, and in particular to a boring bar device for deep hole machining. Background Technology
[0002] Boring bars are key tools in boring operations, used to enlarge existing holes or machine high-precision holes, and are widely used in the automotive, aerospace, and mold industries.
[0003] Currently, conventional boring bars are mostly of fixed specifications, but the diameters of deep holes are diverse. Conventional boring bars can only process deep holes of a single diameter and cannot be adjusted in real time according to different hole diameters. This results in a low range of applicability for boring bars. When it is necessary to drill a hole of a different size, the boring bar often needs to be replaced. The replacement process wastes a lot of time and leads to low work efficiency.
[0004] Therefore, we provide a boring bar device for deep hole machining. Utility Model Content
[0005] The purpose of this invention is to address the aforementioned technical problems by providing a boring bar device for deep hole machining, which enables the adjustment of the outer diameter of the boring bar's rotation according to different hole diameters and improves its applicability.
[0006] In view of this, the present invention provides a boring bar device for deep hole machining, including a support shell, a drive assembly is provided inside the support shell, an adjustment assembly is provided on one side of the drive assembly, a support limiting assembly is provided on one side of the adjustment assembly, and a boring bar assembly is provided inside the support limiting assembly;
[0007] The adjustment component includes a rotating disk disposed inside the support shell, and an adjustment groove is provided at one end of the rotating disk;
[0008] The boring bar assembly includes a support column that is slidably connected to the adjustment groove via a rotating column, and a boring bar is connected to the outer surface of the support column.
[0009] Preferably, the adjustment assembly includes a rotating disk rotatably disposed inside the support shell, and the adjustment groove is figure-eight shaped.
[0010] Preferably, the drive assembly includes a motor mounted on the inner wall of the support shell, and a worm gear is fixedly connected to the output end of the motor.
[0011] Preferably, the worm gear meshes with a worm wheel, one end of the worm wheel is rotatably connected to the inner wall of the support shell, and the other end of the worm wheel is fixedly connected to one side surface of the rotating disk.
[0012] Preferably, the boring bar assembly includes two symmetrically distributed support columns, one end of each support column is rotatably connected to a rotating column, the rotating column is movably disposed inside the adjustment groove, and one end of the boring bar is inserted into the support shell.
[0013] Preferably, the support limiting component includes two support blocks fixedly connected to the inner wall of the support shell. The two support blocks are symmetrically distributed. A sliding groove is provided at one end of each support block, and the support column is slidably disposed inside the sliding groove.
[0014] Preferably, the boring bar is movably disposed inside the sliding groove, a limiting block is fixedly connected to one side of the support column, a limiting groove is formed in the inner wall of the sliding groove, and the limiting block is slidably disposed inside the limiting groove.
[0015] Compared with the prior art, this utility model provides a boring bar device for deep hole machining, which has the following advantages:
[0016] 1. This utility model, through the action of the adjustment component and the boring bar component, can adjust the position of the boring bar by changing the position of the rotating column above the support column inside the adjustment groove, so that the outer end rotation diameter of the boring bar can be changed according to different opening diameters, thereby improving the applicability of the boring bar.
[0017] 2. In addition, this utility model eliminates the need to replace the boring bar; only the boring bar needs to be adjusted, reducing the time wasted on replacements and further improving work efficiency.
[0018] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of a boring bar device for deep hole machining proposed in this utility model;
[0020] Figure 2 This is a schematic diagram of the internal component structure of the support shell of a boring bar device for deep hole machining proposed in this utility model;
[0021] Figure 3 This utility model provides a schematic diagram of the adjustment assembly and the relative position structure of the boring bar assembly for deep hole machining.
[0022] Figure 4 This is a schematic diagram of the support and limiting component structure of a boring bar device for deep hole machining proposed in this utility model;
[0023] Figure 5 This is a schematic diagram of the drive assembly structure of a boring bar device for deep hole machining proposed in this utility model.
[0024] In the diagram: 1. Support shell; 2. Adjustment assembly; 201. Rotary disk; 202. Adjustment groove; 3. Drive assembly; 301. Motor; 302. Worm gear; 303. Worm wheel; 4. Boring bar assembly; 401. Support column; 402. Boring bar; 403. Limit block; 5. Support and limit assembly; 501. Support block; 502. Limit groove. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0027] Example: A boring bar device for deep hole machining, such as Figures 1-5 As shown, it includes a support shell 1, a drive assembly 3 is provided inside the support shell 1, an adjustment assembly 2 is provided on one side of the drive assembly 3, a support limiting assembly 5 is provided on one side of the adjustment assembly 2, and a boring bar assembly 4 is provided inside the support limiting assembly 5;
[0028] The adjustment component 2 includes a rotating disk 201 disposed inside the support shell 1, and an adjustment groove 202 is provided at one end of the rotating disk 201;
[0029] The boring bar assembly 4 includes a support column 401 that is slidably connected to the adjustment groove 202 via a rotating column, and a boring bar 402 is connected to the outer surface of the support column 401.
[0030] The adjustment component 2 includes a rotating disk 201 rotatably disposed inside the support shell 1, and the adjustment groove 202 is figure-eight shaped.
[0031] The boring bar assembly 4 includes two symmetrically distributed support columns 401. One end of each support column 401 is rotatably connected to a rotating column, which is movably disposed inside the adjustment groove 202. One end of the boring bar 402 is inserted into the support shell 1.
[0032] When drilling a hole in an object, the rotating disk 201 rotates according to the diameter of the hole. Simultaneously, the adjusting groove 202 rotates, causing the positions of the two rotating rods 402 to change. When the rotating rod is at the outermost end of the figure-eight adjusting groove 202, the outer ends of the two boring rods 402 form the largest hole diameter. When the rotating rod is at the innermost end of the figure-eight adjusting groove 202, the outer ends of the two boring rods 402 form the smallest hole diameter. During the movement of the rotating rod from the inner end to the outer end of the figure-eight adjusting groove 202, the two boring rods 402... 2. The diameter of the opening formed at the outer end gradually increases, and it can be adjusted according to different opening diameters. Under the action of the adjustment component 2 and the boring bar component 4, the position of the boring bar 402 can be adjusted by changing the position of the rotating column above the support column 401 inside the adjustment groove 202. This allows the rotation diameter of the outer end of the boring bar 402 to be changed according to different opening diameters, thus improving the applicability of the boring bar 402. At the same time, it is not necessary to replace the boring bar 402; only the boring bar 402 needs to be adjusted, reducing the time wasted on replacement and further improving work efficiency.
[0033] like Figures 1-5 As shown, the drive assembly 3 includes a motor 301 installed on the inner wall of the support shell 1, and a worm gear 302 is fixedly connected to the output end of the motor 301.
[0034] The worm gear 302 is engaged with the worm wheel 303. One end of the worm wheel 303 is rotatably connected to the inner wall of the support shell 1, and the other end of the worm wheel 303 is fixedly connected to one side surface of the rotating disk 201.
[0035] When the boring bar 402 needs to be adjusted according to different hole diameters, the motor 301 is activated, driving the worm gear 302 to rotate. Based on the meshing connection between the worm gear 302 and the worm wheel 303, the worm wheel 303 is driven to rotate, thereby driving the rotating disk 201 to rotate, achieving the purpose of adjusting the position of the boring bar 402. By using the worm gear 302 and the worm wheel 303, it is ensured that the rotating disk 201 will not rotate due to external forces during the boring process of the boring bar 402, thus ensuring the stability of the boring bar 402 during operation.
[0036] like Figures 1-5 As shown, the support limiting component 5 includes two support blocks 501 that are fixedly connected to the inner wall of the support shell 1. The two support blocks 501 are symmetrically distributed. A sliding groove is provided at one end of the support block 501, and a support column 401 is slidably arranged inside the sliding groove.
[0037] The boring bar 402 is movably disposed inside the sliding groove. A limit block 403 is fixedly connected to one side of the support column 401. A limit groove 502 is opened in the inner wall of the sliding groove, and the limit block 403 is slidably disposed inside the limit groove 502.
[0038] When the position of the boring bar 402 is adjusted, the support column 401 and the boring bar 402 move horizontally along the sliding groove on the support block 501. Under the action of the sliding groove on the support block 501, the support column 401 and the boring bar 402 are initially limited to ensure the accuracy of the direction of the boring bar 402 during horizontal movement. At the same time, under the action of the limiting block 403 and the limiting groove 502, the angle of the support column 401 and the boring bar 402 is further limited to avoid the angle sway caused by vibration during the operation of the boring bar 402, and further ensure the stability of the boring bar 402 during operation.
[0039] Working principle: When the boring bar 402 needs to be adjusted according to different hole diameters, the motor 301 is run, driving the worm gear 302 to rotate. Based on the meshing connection between the worm gear 302 and the worm wheel 303, the worm wheel 303 is driven to rotate, thereby driving the rotating disk 201 to rotate. The adjusting groove 202 rotates accordingly. At the same time, the adjusting groove 202 pushes the position of the two rotating columns to change simultaneously. At this time, the support column 401 and the boring bar 402 move horizontally along the sliding groove on the support block 501. When the rotating column is located at the outermost end of the figure-eight adjusting groove 202, the outer ends of the two boring bars 402 form the largest opening diameter. When the rotating column is located at the innermost end of the figure-eight adjusting groove 202, the outer ends of the two boring bars 402 form the smallest opening diameter. As the rotating column moves from the inner end to the outer end of the figure-eight adjusting groove 202, the opening diameter formed by the outer ends of the two boring bars 402 gradually increases.
[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A boring bar device for deep hole machining, comprising a support shell (1), characterized in that, The support shell (1) is provided with a drive assembly (3), an adjustment assembly (2) is provided on one side of the drive assembly (3), a support limiting assembly (5) is provided on one side of the adjustment assembly (2), and a boring bar assembly (4) is provided inside the support limiting assembly (5). The adjustment component (2) includes a rotating disk (201) disposed inside the support shell (1), and an adjustment groove (202) is provided at one end of the rotating disk (201). The boring bar assembly (4) includes a support column (401) that is slidably connected to the adjustment groove (202) via a rotating column, and the outer surface of the support column (401) is connected to the boring bar (402).
2. The boring bar device for deep hole machining according to claim 1, characterized in that, The adjustment component (2) includes a rotating disk (201) rotatably disposed inside the support shell (1), and the adjustment groove (202) is figure-eight shaped.
3. A boring bar device for deep hole machining according to claim 1, characterized in that, The drive assembly (3) includes a motor (301) installed on the inner wall of the support shell (1), and a worm gear (302) is fixedly connected to the output end of the motor (301).
4. A boring bar device for deep hole machining according to claim 3, characterized in that, The worm (302) meshes with the worm wheel (303), one end of the worm wheel (303) is rotatably connected to the inner wall of the support shell (1), and the other end of the worm wheel (303) is fixedly connected to one side surface of the rotating disk (201).
5. A boring bar device for deep hole machining according to claim 2, characterized in that, The boring bar assembly (4) includes two symmetrically distributed support columns (401). One end of each support column (401) is rotatably connected to a rotating column, which is movably disposed inside the adjustment groove (202). One end of the boring bar (402) is inserted into the support shell (1).
6. A boring bar device for deep hole machining according to claim 5, characterized in that, The support limiting component (5) includes two support blocks (501) fixedly connected to the inner wall of the support shell (1). The two support blocks (501) are symmetrically distributed. A sliding groove is provided at one end of each support block (501), and the support column (401) is slidably disposed inside the sliding groove.
7. A boring bar device for deep hole machining according to claim 6, characterized in that, The boring bar (402) is movably disposed inside the sliding groove. A limiting block (403) is fixedly connected to one side of the support column (401). A limiting groove (502) is opened on the inner wall of the sliding groove. The limiting block (403) is slidably disposed inside the limiting groove (502).