Center drill tool

Abstract

The utility model provides a center drill tool, and belongs to the field of center drills. The center drill solves the problem that an existing center drill is complex to position and install. The center drill tool comprises a tool body and a center drill which is of a flat structure, the tool body comprises a handle end and a handle part, a positioning cavity is formed in the handle end, the shape of the positioning cavity is complementary with the structure of the center drill, two flange parts are arranged on the inner wall of the positioning cavity, grooves are formed in the two sides of the center drill, and a pressing assembly is arranged at the handle end, a positioning hole is formed in the middle of the center drill, a positioning assembly is further arranged in the positioning cavity and comprises a positioning piece, an elastic piece and a plug, a stepped hole is formed in the positioning cavity, the positioning piece is movably installed in the stepped hole through the elastic piece and the plug, and the end of the positioning piece can penetrate into the positioning hole of the center drill to achieve limiting. The utility model has the advantages of quick positioning and convenient disassembly.

Description

Technical Field

[0001] This utility model belongs to the field of center drills, and relates to a tool, particularly a center drill tool. Background Technology

[0002] Center drills are commonly used cutting tools in machining and play an important role in actual production. Originally used primarily on lathes, center drills were used to drill center holes in shaft-type parts. With the increasing prevalence of automation, their application in multi-functional CNC equipment has become more widespread. Their primary function is to drill center holes to ensure the positional accuracy of machined holes in parts.

[0003] Traditional center drills use a cylindrical drill body, the diameter of which increases significantly with the diameter of the cutting edge, resulting in serious material waste. Traditional center drills rely on mechanical clamping (such as screw holes + locating pins), and repeated calibration is required when changing tools, making the operation cumbersome. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a center drilling tool to solve these problems.

[0005] The purpose of this utility model can be achieved through the following technical solution: A center drill tool, characterized in that it includes a tool body and a center drill with a flat structure, the tool body includes a shank end and a shank portion, the shank end is provided with a positioning cavity for positioning and mounting the center drill, the shape of which is complementary to the structure of the center drill.

[0006] The inner wall of the positioning cavity has two opposing flanges, and the two sides of the central drill are provided with grooves that are positioned and engaged with the flanges. The two flanges and the inner wall of the positioning cavity are integrally formed.

[0007] The shank end is provided with a clamping component for quickly clamping the center drill.

[0008] The center drill has a positioning hole in the middle for quick positioning, and the positioning cavity is also provided with a positioning component for quick positioning and axial limiting of the center drill.

[0009] The positioning component includes a T-shaped positioning element, an elastic element that can be elastically reset, and a plug. The positioning cavity has a stepped hole inside. The positioning element is movably installed in the stepped hole through the elastic element and the plug. Its end can be inserted into the positioning hole drilled in the center to achieve positioning.

[0010] In the aforementioned center drill tool, the clamping assembly includes a clamping member and an adjusting bolt. The end of the clamping member extends axially downward and is provided with a limiting protrusion. The shank end is provided with an internal threaded hole. The adjusting bolt is threadedly connected to the internal threaded hole, and its limiting protrusion is adapted to the positioning hole of the center drill.

[0011] In the aforementioned center drill tool, the limiting protrusion is driven by an adjusting bolt to push out the positioning member and pass through the positioning hole of the center drill, entering the stepped hole to form a clamping limit.

[0012] In one of the aforementioned center drilling tools, the limiting protrusion is further fitted with an elastic gasket for clamping and protection.

[0013] Compared with existing technologies, this center drilling tool has the following advantages:

[0014] 1. By utilizing the complementary shape of the positioning cavity and the center drill, combined with the complementary design of the flange and the groove, and the clamping assembly, the center drill can be quickly positioned and locked. Its one-piece flange design enhances the strength of the tool body and reduces the risk of deformation.

[0015] 2. By utilizing the T-shaped positioning element and elastic element design in the positioning assembly, combined with the stepped hole and plug, axial auxiliary positioning can be achieved. At the same time, it is easy to disassemble and replace, reducing maintenance costs.

[0016] 3. The clamping component works in conjunction with the elastic gasket, allowing users to adjust the clamping force as needed to avoid overload damage. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the center drilling tool.

[0018] Figure 2 This is a partial structural diagram of the center drilling tool.

[0019] Figure 3 This is a simplified cross-sectional diagram of the shank end of this center drill tool.

[0020] In the diagram, 1 is the shank end; 2 is the shank portion; 3 is the positioning cavity; 4 is the center drill; 5 is the groove; 6 is the flange portion; 7 is the positioning hole; 8 is the positioning element; 9 is the elastic element; 10 is the plug; 11 is the stepped hole; 12 is the clamping element; 13 is the adjusting bolt; 14 is the limiting protrusion; and 15 is the internal threaded hole. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] like Figure 1 , Figure 2 , Figure 3As shown, this center drill tool includes a tool body and a center drill 4 with a flat structure. The tool body includes a shank end 1 and a shank portion 2. The shank end 1 is provided with a positioning cavity 3 for positioning and mounting the center drill 4. Its shape is complementary to the structure of the center drill 4. The inner wall of the positioning cavity 3 has two opposing flange portions 6. The two sides of the center drill 4 are provided with grooves 5 that are mutually positioned and engaged with the flange portions 6. The two flange portions 6 and the inner wall of the positioning cavity 3 are integrally formed. The complementary design of the flanges and grooves 5, combined with the clamping component, realizes the rapid positioning and locking of the center drill 4. The integrally formed flange portions 6 and the stepped holes The design of 11 enhances the strength of the tool body and reduces the risk of deformation. A clamping component for quickly clamping the center drill 4 is provided on the handle end 1. The center drill 4 has a positioning hole 7 in the middle for quick positioning. The positioning cavity 3 is also provided with a positioning component for quickly positioning the center drill 4 and axially limiting it. The positioning component includes a positioning element 8 with a T-shaped structure, an elastic element 9 that can be elastically reset, and a plug 10. The positioning cavity 3 has a stepped hole 11. The positioning element 8 is movably installed in the stepped hole 11 through the elastic element 9 and the plug 10. Its end can be inserted into the positioning hole 7 of the center drill 4 to achieve limiting.

[0023] The clamping assembly includes a clamping element 12 and an adjusting bolt 13. The clamping element 12 has a limiting protrusion 14 extending axially downwards at its end, and an internally threaded hole 15 at its shank end 1. The adjusting bolt 13 is threadedly connected to the internally threaded hole 15. The limiting protrusion 14 is adapted to the positioning hole 7 of the center drill 4. Driven by the adjusting bolt 13, the limiting protrusion 14 pushes out the positioning element 8, which passes through the positioning hole 7 of the center drill 4 and enters the stepped hole 11 to form a clamping limit. An elastic gasket for clamping protection is also fitted on the limiting protrusion 14. The clamping element 12, in conjunction with the elastic gasket, allows the user to adjust the clamping force as needed, avoiding overload damage. The T-shaped positioning element 8 and the elastic element 9 in the positioning assembly facilitate disassembly and replacement, reducing maintenance costs.

[0024] Working principle

[0025] Positioning stage: The center drill 4 is initially aligned with the flange 6 in the positioning cavity 3 through the groove 5, and the positioning hole 7 of the center hole is matched with the positioning part 8 to achieve coarse positioning.

[0026] Tightening stage: Rotate the adjusting bolt 13 to drive the limiting protrusion 14 at the end of the clamping member 12 to press the T-shaped positioning member 8, so that it passes through the positioning hole 7 of the center drill 4 and is embedded in the stepped hole 11. At the same time, the elastic member 9 provides the positioning member 8 with the reset tension.

[0027] Fixing stage: The plug 10 seals the stepped hole 11, and the elastic gasket buffers the clamping force to ensure that the center drill 4 is firmly fixed and without loosening.

[0028] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0029] Although this document uses a lot of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any kind of additional limitation would contradict the spirit of this invention.

Claims

1. A center drill (4) tool, characterized in that, The tool body includes a tool body and a center drill (4) with a flat structure. The tool body includes a shank end (1) and a shank portion (2). The shank end (1) is provided with a positioning cavity (3) for positioning and mounting the center drill (4), and its shape is complementary to the structure of the center drill (4). The inner wall of the positioning cavity (3) has two opposing flanges (6), and the two sides of the center drill (4) are provided with grooves (5) that are positioned and cooperate with the flanges (6). The two flanges (6) and the inner wall of the positioning cavity (3) are integrally formed. The shank end (1) is provided with a clamping assembly for quickly clamping the center drill (4); The center drill (4) has a positioning hole (7) in the middle for quick positioning, and the positioning cavity (3) is also provided with a positioning component for quick positioning of the center drill (4) and axial limiting. The positioning assembly includes a T-shaped positioning element (8), an elastic element (9) that can be elastically reset, and a plug (10). The positioning cavity (3) is provided with a stepped hole (11). The positioning element (8) is movably installed in the stepped hole (11) through the elastic element (9) and the plug (10). Its end can be inserted into the positioning hole (7) of the center drill (4) to achieve positioning.

2. A center drill (4) tool according to claim 1, characterized in that, The clamping assembly includes a clamping member (12) and an adjusting bolt (13). The clamping member (12) has a limiting protrusion (14) extending axially downward at its end. The handle end (1) has an internal threaded hole (15). The adjusting bolt (13) is threadedly connected to the internal threaded hole (15). Its limiting protrusion (14) is adapted to the positioning hole (7) of the center drill (4).

3. A center drill (4) tool according to claim 2, characterized in that, The limiting protrusion (14) is driven by the adjusting bolt (13) to push out the positioning member (8) and pass through the positioning hole (7) of the center drill (4) and enter the stepped hole (11) to form a pressing limit.

4. A center drill (4) tool according to claim 2, characterized in that, The limiting protrusion (14) is also fitted with an elastic gasket for compression protection.

Images