Drilling and boring integrated cutter for large aluminum alloy workpiece

Abstract

The utility model discloses a drilling and boring integrated cutter for a large aluminum alloy workpiece, which comprises a cutter bar and a large-diameter drill bit, and further comprises a boring cutter and a positioning bolt, a boring cutter mounting groove and a positioning counter bore are arranged on the side face of the large-diameter drill bit, the boring cutter mounting groove is vertically communicated with the positioning counter bore, and the positioning bolt is arranged in the boring cutter mounting groove. An internal thread is arranged in the positioning counter bore, and the boring cutter is locked and installed in the boring cutter installation groove through the positioning bolt. The device is simple in structure, the working efficiency is improved, and the cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of large-diameter cutting tool technology, specifically relating to a drilling and boring integrated tool for large aluminum alloy workpieces. Background Technology

[0002] Aluminum alloys, due to their low density and good mechanical properties, have been widely used in various structures such as aircraft, automobiles, and large equipment. To facilitate assembly, aluminum alloy workpieces need to be drilled, currently primarily through drilling. However, drilling large aluminum alloys often results in problems such as flanged exit holes, rough inner hole surfaces, and low dimensional accuracy. These issues severely affect the feasibility of the aluminum alloy assembly process and the mechanical properties of the components. Therefore, existing processing methods use two machine tools: one for initial drilling and the other for enlarging, semi-finishing, or finishing existing holes using a boring bar. This separate processing with two machine tools not only wastes time on transportation and installation, resulting in low efficiency, but also in high costs. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing an integrated drilling and boring tool for large aluminum alloy workpieces, enabling a single machine tool to perform both drilling and boring functions, thereby improving work efficiency and reducing investment costs.

[0004] The technical solution for the purpose of this utility model is:

[0005] A drilling and boring tool for large aluminum alloy workpieces includes a tool holder and a large-diameter drill bit, as well as a boring tool and a positioning bolt. The large-diameter drill bit has a boring tool mounting groove and a positioning countersunk hole on its side. The boring tool mounting groove is perpendicularly connected to the positioning countersunk hole. The positioning countersunk hole has an internal thread. The boring tool is locked in the boring tool mounting groove by the positioning bolt.

[0006] Furthermore, the positioning countersunk hole is formed on the side wall of the chip removal groove of the large-diameter drill bit.

[0007] Furthermore, the base of the boring tool adopts a rectangular structure, and the boring tool mounting groove is a rectangular groove.

[0008] Furthermore, the boring bar base is provided with a positioning groove that mates with the positioning bolt.

[0009] Furthermore, the boring tool mounting groove is located in the middle of the large-diameter drill bit.

[0010] The above technical solution has the following beneficial effects:

[0011] This invention has a simple structure. By directly mounting a boring tool on a large-diameter drill bit, both drilling and boring can be performed on a single machine tool, achieving large-diameter hole enlargement. This reduces the transfer time when the workpiece is transferred to different machine tools for finishing, thereby improving work efficiency. Furthermore, the boring tool is mounted on the drill bit via positioning bolts, allowing for the adjustment and replacement of different boring tools as needed, thus expanding the application range and reducing investment costs.

[0012] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of specific embodiment 1.

[0014] In the attached diagram, 1 is the tool holder, 2 is the large-diameter drill bit, 2-1 is the boring tool mounting slot, 2-2 is the positioning countersunk hole, 2-3 is the drilling chip removal groove, and 3 is the positioning bolt. Detailed Implementation Specific Implementation Example 1:

[0016] See Figure 1 As shown, a drilling and boring integrated tool for a large aluminum alloy workpiece includes a tool holder 1, a large-diameter drill bit 2, a boring tool 3, and a positioning bolt 3. The tool holder 1 is connected and fixed to the large-diameter drill bit 2. A boring tool mounting groove 2-1 and a positioning countersunk hole 2-2 are formed on the side of the large-diameter drill bit 2. Compared to placing the boring tool mounting groove at the tool holder position, this structure utilizes the greater strength of the large-diameter drill bit, thereby also improving the strength of the boring tool. The boring tool mounting groove 2-1 is located in the middle of the large-diameter drill bit, ensuring that the strength of the drill bit is not affected. The boring tool mounting groove 2-1 is perpendicularly connected to the positioning countersunk hole 2-2, which avoids the influence of the positioning bolt on the product processing and accuracy during drilling. The positioning countersunk hole 2-2 has an internal thread, and the boring tool ( Figure 1 (Omitted) The boring bar is locked in place in the boring bar mounting slot 2-1 by the positioning bolt 3. The boring bar is movably mounted on the large-diameter drill bit 2 by the positioning bolt 3. Different boring bars can be adjusted and replaced according to the needs of hole enlargement and finishing, thus expanding the range of applications. This utility model enables finishing machining using a boring bar after drilling on the same machine tool, improving work efficiency.

[0017] The countersunk hole 2-2 is formed on the side wall of the chip removal groove 2-3 of the large-diameter drill bit 2, ensuring the strength of the drill bit without affecting chip removal. The boring bar base has a rectangular structure, and the boring bar mounting groove 2-1 is a rectangular groove. The boring bar is inserted into the boring bar mounting groove, which facilitates the positioning bolts to tighten and fix the boring bar. Hole enlargement or finishing is performed by the boring inserts on the boring bar base.

[0018] The boring bar has a positioning groove on its base that matches the positioning bolt 3, making the boring bar more securely locked.

Claims

1. A drilling and boring tool for large aluminum alloy workpieces, comprising a tool holder and a large-diameter drill bit, characterized in that: It also includes a boring tool and a positioning bolt. A boring tool mounting groove and a positioning countersunk hole are provided on the side of the large-diameter drill bit. The boring tool mounting groove is perpendicularly connected to the positioning countersunk hole. The positioning countersunk hole is provided with internal threads. The boring tool is locked and installed in the boring tool mounting groove by the positioning bolt.

2. The drilling and boring integrated tool for large aluminum alloy workpieces according to claim 1, characterized in that: The positioning countersunk hole is formed on the side wall of the chip removal groove of the large-diameter drill bit.

3. A drilling and boring integrated tool for large aluminum alloy workpieces according to claim 1 or 2, characterized in that: The boring bar base has a rectangular structure, and the boring bar mounting slot is a rectangular slot.

4. The drilling and boring integrated tool for large aluminum alloy workpieces according to claim 3, characterized in that: The boring bar has a positioning groove on its base that mates with the positioning bolt.

5. The drilling and boring integrated tool for large aluminum alloy workpieces according to claim 1, characterized in that: The boring bar mounting slot is located in the middle of the large-diameter drill bit.

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