A round disc hole sinking device with adjustable depth of limited hole

Abstract

The utility model discloses a disc counterbore device with adjustable counterbore depth, which comprises a center drill, a hole opener and an outer disc. The hole opener is sleeved on the bottom of the center drill, and the outer disc is located on the bottom of the hole opener. A plurality of counterbore heads are radially distributed on the surface of the outer disc. Each counterbore head is installed on the outer disc through an adjustable structure. The adjustable structure comprises a seat, and the counterbore head is arranged on the head of the seat. An installation hole is arranged on the outer disc at the position corresponding to each counterbore head. The side surface of the installation hole is arranged as a straight plane. The seat is arranged close to the straight plane. The tail of the seat passes through the installation hole and extends to the back surface of the outer disc. The tail of the seat is bent to form a connecting part. At least one long strip adjusting hole is arranged on the connecting part. The disc counterbore device can meet the processing needs of different counterbore sizes, and facilitates the maintenance in the later period and reduces the maintenance cost.

Description

Technical Field

[0001] This utility model relates to a disc countersinker, specifically a disc countersinker with adjustable countersink depth. Background Technology

[0002] In the process of installing ceilings in home decoration, a disc countersunk hole tool is used to perform the drilling operation to ensure seamless installation of nails or downlights. A typical disc countersunk hole tool includes a center drill, a hole saw, and an outer disc. The center drill is located at the center for positioning during operation, the hole saw is used for cutting during drilling, and the outer disc is located on the bottom outer side of the hole saw. Multiple countersunk cutting heads are radially distributed on the surface of the outer disc relative to the center. During drilling, the outer disc rotates synchronously with the hole saw, and the countersunk cutting heads on it cut a countersunk hole of a certain depth on the gypsum board surface to meet the seamless installation requirements of nails or downlight housings.

[0003] In the above structure, the countersink cutter head is fixed and cannot be disassembled on the outer disc. This means that one outer disc can only be used for countersinking operations of one size, which is difficult to meet the actual needs of opening countersinks of different sizes. On the other hand, because the countersink cutter head is not removable, once a cutter head wears out during use, the entire outer disc needs to be replaced, which will increase the maintenance cost of the disc countersinker to some extent. Utility Model Content

[0004] To address the aforementioned issues, this utility model designs a disc countersinker with adjustable countersink depth. The countersinking cutter head is mounted on the outer disc via a detachable and adjustable structure, thereby meeting the processing needs of different countersink sizes. At the same time, it facilitates subsequent maintenance and reduces maintenance costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A disc countersinking tool with adjustable depth and limit, comprising a center drill, a hole opener, and an outer disc. The center drill is located at the center, the hole opener is fitted around the bottom of the center drill, and the outer disc is located on the bottom outer side of the hole opener. Multiple countersinking heads are radially distributed on the surface of the outer disc relative to the center. The tool is characterized in that each countersinking head is mounted on the outer disc via an adjustable structure, which includes a tool holder with the countersinking head mounted at its head. The outer disc has a mounting hole corresponding to each countersinking head, one side of which is a flat plane. The tool holder is positioned close to this flat plane, and its tail extends through the mounting hole to the back of the outer disc. The tail of the tool holder is bent to one side to form a connecting portion, which has at least one elongated adjusting hole. Each elongated adjusting hole secures the tool holder to the outer disc with a screw.

[0007] More specifically, the aforementioned straight plane can be aligned with the radial direction of the outer disk.

[0008] More specifically, the aforementioned straight plane is inclined at a certain angle relative to the radial direction of the outer disk.

[0009] More specifically, the outer circle of the outer disk is provided with a connecting outer edge, which engages with the inner ring groove of a limiting ring. The entire limiting ring can rotate freely relative to the connecting outer edge, and the top surface of the limiting ring protrudes slightly from the surface of the outer disk.

[0010] More specifically, the tail of the aforementioned center drill is connected to the shank of the disc countersink.

[0011] The disc countersinker designed in this utility model has countersinking cutters mounted on an outer disc via an adjustable structure. In use, by adjusting the radial distance between each countersinking cutter relative to the center, different countersinking sizes can be achieved.

[0012] In addition, each of the countersinking cutters is detachably fixed to the outer disc via a cutter holder. Even if wear occurs due to use later, the corresponding countersinking cutter can be replaced individually without replacing the entire outer disc, which can effectively reduce the maintenance cost later. Attached Figure Description

[0013] Figure 1 A three-dimensional structural diagram of this utility model;

[0014] Figure 2 A three-dimensional structural schematic diagram of this utility model from another perspective;

[0015] Figure 3 A three-dimensional structural diagram of the countersinking cutter head and cutter holder of this utility model;

[0016] Figure 4 An exploded three-dimensional view of the limiting ring and the outer disk of this utility model;

[0017] Among them, 1—center drill, 2—hole opener, 3—outer disc, 31—mounting hole, 311—straight plane, 32—connecting outer edge, 4—handle, 5—counter-hole cutter head, 6—tool holder, 61—connecting part, 611—elongated adjustment hole, 612—screw, 7—limiting ring, 71—inner ring groove. Detailed Implementation

[0018] like Figure 1-4 As shown, a disc countersinker with adjustable depth and limit includes a center drill 1, a hole opener 2, and an outer disc 3. The center drill 1 is located in the center and is used for positioning during hole opening. The tail of the center drill 1 is fixedly connected to the handle 4 of the disc countersinker. During use, the center drill 1 rotates synchronously by rotating the handle 4.

[0019] The hole opener 2 is fitted onto the external connecting thread at the bottom of the center drill 1 and is used for hole cutting during operation. The outer disc 3 is located on the outer side of the bottom of the hole opener 2. Multiple countersinking cutters 5 are radially distributed on the surface of the outer disc 3 relative to the center. In this figure, six countersinking cutters 5 are provided, and each countersinking cutter 5 is evenly distributed. In practice, two, three, four, five or more countersinking cutters 5 can be used as needed.

[0020] Each countersinking cutter head 5 is mounted on an outer disc via an adjustable structure, which includes a cutter holder 6, with the countersinking cutter head 5 mounted on the head of the cutter holder 6. The outer disc 3 has a mounting hole 31 at the position corresponding to each countersinking cutter head 5, and one side of the mounting hole 31 is formed as a straight plane 311, with the cutter holder 6 positioned close to the straight plane 311.

[0021] The straight plane 311 can be aligned with the radial direction of the outer disk 3, or it can be tilted at a certain angle relative to the radial direction. The key is to ensure that when the tool holder 6 moves along the straight plane 311, the distance between the countersinking head 5 on the tool holder and the center of the outer disk 3 can be adjusted. In practice, considering the adjustment efficiency of the countersinking head 5, the optimal position for the straight plane 311 is to align it with the radial direction of the outer disk 3.

[0022] The tail of the tool holder 6 extends through the mounting hole 31 to the back of the outer disk 3. The tail of the tool holder 6 is bent to one side to form a connecting part 61. The connecting part 61 is provided with at least one elongated adjustment hole 611. This figure only describes the structure with two elongated adjustment holes 611. Each elongated adjustment hole 611 fixes the tool holder 6 to the outer disk 3 by screws 612, so that each countersinking tool head 5 and the back of the outer disk 3 form an adjustable and detachable structure.

[0023] In summary, the countersinking tool designed in this utility model has a countersinking cutter head 5 mounted on an outer disc 3 via an adjustable and detachable cutter holder 6. During use, the position of the cutter holder 6 on the straight plane 311 is adjusted by fixing it to different positions in the elongated adjustment hole 611 with screws 612, thereby adjusting the radial distance of each countersinking cutter head 5 relative to the center of the outer disc 3, thus achieving the opening processing needs of different countersinking hole sizes.

[0024] In addition, each of the countersunk hole cutter heads 5 is detachably fixed to the outer disc 3 via the cutter holder 6. Even if wear occurs due to use in the future, the corresponding countersunk hole cutter head 5 can be replaced individually without replacing the entire outer disc, which can effectively reduce the later maintenance and upkeep costs.

[0025] The outer circumference of the outer disk 3 is provided with a connecting outer edge 32, which engages with the inner ring groove 71 of a limiting ring 7. The entire limiting ring 7 can rotate freely relative to the connecting outer edge 32, and the top surface of the limiting ring 7 protrudes slightly from the surface of the outer disk 3. In use, when the hole is drilled to a certain depth, the limiting ring 7 will first abut against the drilling plane. At this time, the outer disk 3 is still rotating, while the limiting ring 7 remains stationary due to the resistance of the drilling plane, thereby protecting the drilling plane and preventing scratches during drilling.

[0026] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the utility model. Any simple modifications, equivalent changes, or alterations made to the above embodiments based on the technical principles of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A disc countersinking tool with adjustable depth for limiting countersinking, comprising a center drill (1), a hole opener (2), and an outer disc (3), wherein the center drill (1) is located at the center, the hole opener (2) is fitted around the bottom of the center drill (1), and the outer disc (3) is located on the bottom outer side of the hole opener (2), and a plurality of countersinking cutter heads (5) are radially distributed on the surface of the outer disc (3) relative to the center, characterized in that: Each countersinking cutter head (5) is mounted on an outer disc (3) via an adjustable structure. The adjustable structure includes a cutter holder (6), with the countersinking cutter head (5) mounted on the head of the cutter holder (6). The outer disc (3) has a mounting hole (31) at the position corresponding to each countersinking cutter head (5). One side of the mounting hole (31) is set as a straight plane (311). The cutter holder (6) is set close to the straight plane (311). The tail of the cutter holder (6) extends through the mounting hole (31) to the back of the outer disc (3). The tail of the cutter holder (6) is bent to one side to form a connecting part (61). The connecting part (61) has at least one elongated adjustment hole (611). Each elongated adjustment hole (611) is fixed to the outer disc (3) by a screw (612).

2. The disc countersinking tool with adjustable countersinking depth as described in claim 1, characterized in that: The straight plane (311) can be aligned with the radial direction of the outer disk (3).

3. The disc countersinking tool with adjustable countersinking depth as described in claim 1, characterized in that: The straight plane (311) is set at a certain angle relative to the radial direction of the outer disk (3).

4. A disc countersinker with adjustable countersink depth as described in any one of claims 1-3, characterized in that: The outer circle of the outer disk (3) is provided with a connecting outer edge (32), which is engaged with the inner ring groove (71) of a limiting ring (7). The entire limiting ring (7) can rotate freely relative to the connecting outer edge (32), and the top surface of the limiting ring (7) protrudes a portion relative to the surface of the outer disk (3).

5. A disc countersinking tool with adjustable countersinking depth as described in any one of claims 1-3, characterized in that: The tail of the center drill (1) is connected to the handle (4) of the disc countersink.

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