A four-edged drill with adjustable drilling depth

By setting a sliding hole and a sliding rod between the first and second handles of the four-edged support drill, and using the cooperation of the return spring, the problem of unstable thread connection of the support drill during reverse rotation in the prior art is solved, and a more stable drilling depth adjustment and processing effect is achieved.

CN222741688UActive Publication Date: 2025-04-11YUEQING YUSHENG TOOLS
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Patent Information

Application Number
CN202421326160.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-11
Publication Date
2025-04-11
Estimated Expiration
2034-06-11

AI Technical Summary

Technical Problem

The existing brace drill with adjustable handle length is unstable when reverse rotation, resulting in the drill bit being unable to effectively process deep or thick wood.

Method used

A four-edged shank drill including the first and second handles is designed, by opening a first sliding hole on the side wall of the first threaded hole and providing a downwardly extending second sliding hole on the upper end surface of the first handle, the sliding rod and the return spring, ensuring that the first handle and the second handle remain stable in connection when rotated.

Benefits of technology

The first handle and the second handle are connected more stable, preventing the thread coordination caused by reverse rotation, ensuring the adjustability and machining stability of the drilling depth.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of wood processing tools, in particular to a four-edged drill with adjustable drilling depth; comprising: a tool body; a tool handle, the tool handle is connected to the tool body; the tool handle comprises: a first tool handle, the first tool handle is connected to the tool body, and one end is provided with a first threaded hole, a first sliding hole is opened on the side wall of the first threaded hole, and a second sliding hole extending downward is provided on the upper end surface of the first tool handle, the second sliding hole is connected to the first sliding hole; a second tool handle, the second tool handle is provided with a screw rod that fits in the first threaded hole; a first sliding rod, the first sliding rod is slidably arranged in the first sliding hole and the end portion abuts on the screw rod, and the first sliding rod is provided with a convex portion, and the convex portion is provided with a first inclined surface; a second sliding rod, the second sliding rod is slidably arranged in the second sliding hole, and the lower end of the second sliding rod is provided with a second inclined surface that abuts against the first inclined surface; the utility model prevents the first tool handle and the second tool handle from being disengaged from the threaded engagement through reverse rotation.
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Description

Technical Field

[0001] The utility model relates to the field of wood processing tools, in particular to a four-edged drill with adjustable drilling depth. Background Art

[0002] The four-edged auger is a woodworking drill with a simple structure and high drilling efficiency. It can process wooden squares or boards. When the board is too thick or the processing depth is too deep, the drill bit cannot process it.

[0003] There is a conventional drill bit with an adjustable shank length, but when the first shank and the second shank rotate in opposite directions, the thread connection may become unstable.

[0004] Therefore, there is an urgent need to provide an improved technical solution to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a four-edged drill with adjustable drilling depth in view of the above-mentioned technical problems, so as to achieve the technical effect of more stable connection between the first tool handle and the second tool handle.

[0006] In view of this, the utility model provides a four-edged drill with adjustable drilling depth, characterized in that it comprises: a cutter body;

[0007] A knife handle, the knife handle is connected to the knife body;

[0008] The handle includes:

[0009] A first knife handle, the first knife handle is connected to the knife body and has a first threaded hole at one end, a first sliding hole is opened on the side wall of the first threaded hole, and a second sliding hole extending downward is provided on the upper end surface of the first knife handle, and the second sliding hole is connected to the first sliding hole;

[0010] A second tool handle, wherein the second tool handle is provided with a screw rod which fits in the first threaded hole;

[0011] A first sliding rod, the first sliding rod is slidably arranged in the first sliding hole and an end of the first sliding rod abuts against the screw rod, and the first sliding rod is provided with a convex portion, and the convex portion is provided with a first inclined surface;

[0012] A second sliding rod, the second sliding rod is slidably disposed in the second sliding hole, and a second inclined surface is disposed at a lower end of the second sliding rod and abuts against the first inclined surface;

[0013] A return spring, the return spring is arranged between the right end surface of the convex part and the second knife handle;

[0014] A fixing rod, the fixing rod is elastically and telescopically arranged on a side surface of the second sliding rod;

[0015] The fixing hole is inserted into the fixing hole when the second sliding rod is completely in the second sliding hole. The fixing hole penetrates through the side wall of the second shank to the fixing rod.

[0016] Further, the blade body comprises:

[0017] The main cutting edge is arranged at the front end of the cutter body;

[0018] Auxiliary cutting edges, the auxiliary cutting edges are arranged on the peripheral side of the cutter body;

[0019] A chip removal groove, which is arranged on the peripheral side of the cutter body;

[0020] Four main cutting edges, four secondary cutting edges and four chip grooves are provided.

[0021] Furthermore, the second handle is provided with a connecting rod, and the connecting rod is a regular hexagonal prism.

[0022] Furthermore, an arc-shaped positioning groove is provided on the connecting rod.

[0023] Furthermore, it also includes:

[0024] Conical spiral tip, the conical spiral tip is arranged on the top end of the knife body.

[0025] Furthermore, the second knife handle also includes:

[0026] The second threaded hole is arranged on the end of the second tool handle and can be matched with the screw rod.

[0027] Furthermore, a tip is provided at the outermost side of the main cutting edge.

[0028] Furthermore, the main cutting edge is made of alloy steel.

[0029] The beneficial effects of the utility model are:

[0030] 1. The utility model prevents the first tool handle and the second tool handle from being disengaged from the threaded fit due to reverse rotation.

[0031] 2. The conical screw tip of the utility model can make the wood more broken into smaller pieces and easier to discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0033] Figure 2 It is a bottom view structural schematic diagram of the utility model;

[0034] Figure 3 This is a schematic diagram of the structure of the second handle of the utility model;

[0035] Figure 4This is a schematic diagram of the connection structure between the first knife handle and the second knife handle of the utility model;

[0036] Figure 5 It is a schematic diagram of the cross-sectional structure of the connection between the first knife handle and the second knife handle of the utility model;

[0037] Figure 6 for Figure 5 Schematic diagram of the structure of area A in the middle.

[0038] The symbols in the figure are:

[0039] 1. Main cutting edge; 2. Secondary cutting edge; 3. Chip groove; 4. First tool handle; 5. Second tool handle; 6. Screw; 7. Connecting rod; 8. Positioning groove; 9. Conical screw tip; 10. Second threaded hole; 11. Tip; 12. First sliding rod; 13. First threaded hole; 14. First sliding hole; 15. Second sliding hole; 16. Protrusion; 17. First inclined surface; 18. Second inclined surface; 19. Return spring; 20. Fixing rod; 21. Fixing hole. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0041] Embodiment 1:

[0042] This embodiment provides a four-edge drill with adjustable drilling depth, comprising:

[0043] Knife body;

[0044] A knife handle, the knife handle is connected to the knife body;

[0045] The handle includes:

[0046] A first knife handle (4), the first knife handle (4) is connected to the knife body and has a first threaded hole 13 at one end, a first sliding hole 14 is formed on the side wall of the first threaded hole 13, and a second sliding hole 15 extending downward is formed on the upper end surface of the first knife handle, the second sliding hole 15 is communicated with the first sliding hole 14;

[0047] A second knife handle (5), wherein the second knife handle (5) is provided with a screw (6) which fits in the first threaded hole 13;

[0048] A first sliding rod 12, the first sliding rod 12 is slidably disposed in the first sliding hole 14 and an end portion thereof abuts against the screw rod, and the first sliding rod 12 is provided with a convex portion 16, and the convex portion 16 is provided with a first inclined surface 17;

[0049] A second sliding rod, the second sliding rod is slidably disposed in the second sliding hole 15, and a second inclined surface 18 is disposed at the lower end of the second sliding rod to abut against the first inclined surface 17;

[0050] A return spring 19, which is arranged between the right end surface of the protrusion 16 and the second knife handle;

[0051] A fixed rod 20, the fixed rod 20 is elastically and telescopically arranged on the side of the second sliding rod;

[0052] The fixing hole 21 , when the second sliding rod is completely in the second sliding hole 15 , the fixing rod 20 is inserted into the fixing hole 21 , and the fixing hole 21 penetrates through the side wall of the second shank to the fixing rod 20 .

[0053] The knife handle includes two parts. One end of the first knife handle 4 is connected to the knife body, and the other end is provided with a first threaded hole 13. One end of the second knife handle 5 is provided with a screw rod 6. The screw rod 6 can cooperate with the first threaded hole 13 to connect the first knife handle 4 and the second knife handle 5. The tightening direction is the same as the rotation direction of the drill, so that the drill will not fall off when it rotates. When the two knife handles are connected together, the second knife handle 5 can have models of different lengths so that the drill can process holes of different depths. A first sliding hole 14 is opened on the side wall of the first threaded hole 13, and a second sliding hole 15 extending downward is provided on the upper end surface of the first knife handle. The second sliding hole 15 is connected to the first sliding hole 14; the first sliding rod 12, the first sliding rod 12 is slidably arranged in the first sliding hole 14 and its end is in contact with the screw rod, and the first sliding rod 12 is provided with a convex portion 16, and the convex portion 16 is provided with a first inclined surface 17; the second sliding rod, the second sliding rod is slidably arranged in the second sliding hole 15, and the lower end of the second sliding rod is provided with a second inclined surface 18 in contact with the first inclined surface 17; the reset spring 19, the reset spring 19 is arranged between the right end surface of the convex portion 16 and the second tool handle; the fixing rod 20, the fixing rod 20 is elastically and telescopically arranged on the side of the second sliding rod; the fixing hole 21, when the second sliding rod is completely in the second sliding hole 15, the fixing rod 20 is inserted into the fixing hole 21, and the fixing hole 21 passes through the side wall of the second tool handle.

[0054] During installation, the first sliding rod 12 is at the leftmost end of the first sliding cavity, the second sliding rod is at the uppermost end, and the second sliding rod protrudes from the end face of the second tool handle. When the first tool handle is threadedly connected to the second tool handle, the end face of the first tool handle completely contacts the second sliding rod in the second sliding cavity, and under the action of the first inclined surface 17 and the second inclined surface 18, the first sliding rod 12 moves toward the first threaded hole 13 and extends out, and the end of the first sliding rod 12 contacts the thread of the screw. The fixing hole 21 is divided into two parts. The first fixing hole 21 is in the second tool handle and passes through the outer wall of the second tool handle to the second sliding cavity. The second fixing hole 21 is arranged on the side wall of the second sliding rod. When the second fixing hole 21 is aligned with the first fixing hole 21, the fixing rod 20 is inserted into the second sliding rod, and the fixing rod 20 and the first fixing hole 21 are threadedly matched. By fixing the position of the second sliding rod, the first sliding rod 12 cannot be disengaged from the thread of the screw, thereby achieving fixation and preventing the first tool handle and the second tool handle from being threadedly matched and disengaged by reverse rotation.

[0055] Embodiment 2:

[0056] This embodiment provides a four-edged drill bit with adjustable drilling depth. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0057] The cutter body includes:

[0058] A main cutting edge 1, the main cutting edge 1 is arranged at the front end of the cutter body;

[0059] Auxiliary cutting edge 2, the auxiliary cutting edge 2 is arranged on the peripheral side of the cutter body;

[0060] A chip removal groove 3, which is arranged on the peripheral side of the cutter body;

[0061] There are four main cutting edges 1, four secondary cutting edges 2 and four chip removal grooves 3;

[0062] The cutter body is made of steel and is approximately cylindrical in shape. The main cutting edge 1 is arranged at the front end of the cutter body, and the secondary cutting edge 2 is arranged on the peripheral side of the cutter body and connected to the main cutting edge 1. Four main cutting edges 1 and secondary cutting edges 2 are provided, and chip grooves 3 are provided between the secondary cutting edges 2. The chip grooves 3 are connected to the front end surface of the cutter body, and the secondary cutting edge 2 and the chip grooves 3 are spiral.

[0063] The second handle 5 is provided with a connecting rod 7, and the connecting rod 7 is a regular hexagonal prism.

[0064] A connecting rod 7 is provided at one end of the second tool handle 5. The connecting rod 7 can be connected to the rotating output end. The regular hexagonal prism can make the rotation synchronization rate of the four-edged drill bit and the output end higher.

[0065] The connecting rod 7 is provided with an arc-shaped positioning groove 8 .

[0066] A circular arc-shaped positioning groove 8 is provided on the circumference of the connecting rod 7 so that it can be better clamped on the output end.

[0067] Also includes:

[0068] Conical spiral tip 9, the conical spiral tip 9 is arranged on the top end of the knife body.

[0069] A conical screw tip 9 is arranged on the top of the cutter body, and a thread is also arranged on the conical screw tip 9. The conical screw tip 9 can make the drill bit drill into the wood faster, and can break the wood to make the wood chips more broken.

[0070] Embodiment 3:

[0071] This embodiment provides a four-edged drill bit with adjustable drilling depth. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0072] The second knife handle 5 also includes:

[0073] The second threaded hole 10 is arranged on the end of the second tool handle 5 and can be matched with the screw rod 6.

[0074] The second threaded hole 10 is arranged on the end of the second tool handle 5 and can be connected to the screw rod 6. By connecting another second tool handle 5 to one second tool handle 5, the tool handle can be extended as a whole, so that the drill can process deeper holes.

[0075] The outermost portion of the main cutting edge 1 is provided with a tip 11 .

[0076] The tip 11 is arranged to contact the processed wood first, so that the drill bit can gradually cut the wood from the outside to the inside, making the feeding speed faster.

[0077] The main cutting edge 1 is made of alloy steel.

[0078] The main cutting edge 1 is the main cutting force point. The main cutting edge 1 is made of alloy steel. The alloy steel has a higher hardness and is not easily damaged, which prolongs the service life of the drill bit.

[0079] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the inspiration of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which belong to the scope of protection of the present application.

Claims

1. A four-edged drill with adjustable drilling depth, characterized in that: include: Knife body; A knife handle, the knife handle is connected to the knife body; The handle includes: A first knife handle (4), the first knife handle (4) is connected to the knife body and has a first threaded hole (13) at one end, a first sliding hole (14) is opened on the side wall of the first threaded hole (13), and a second sliding hole (15) extending downward is provided on the upper end surface of the first knife handle, and the second sliding hole (15) is connected to the first sliding hole (14); A second knife handle (5), wherein the second knife handle (5) is provided with a screw rod (6) which fits in the first threaded hole (13); A first sliding rod (12), the first sliding rod (12) is slidably disposed in the first sliding hole (14) and the end of the first sliding rod abuts against the screw rod, and the first sliding rod (12) is provided with a convex portion (16), and the convex portion (16) is provided with a first inclined surface (17); A second sliding rod, the second sliding rod being slidably disposed in the second sliding hole (15), and a second inclined surface (18) abutting against the first inclined surface (17) being disposed at a lower end of the second sliding rod; A return spring (19), the return spring (19) is arranged between the right end surface of the convex portion (16) and the second knife handle; A fixed rod (20), the fixed rod (20) being elastically telescopically arranged on a side surface of the second sliding rod; The fixing hole (21) is configured such that when the second sliding rod is completely in the second sliding hole (15), the fixing rod (20) is inserted into the fixing hole (21), and the fixing hole (21) penetrates the side wall of the second knife handle to the fixing rod (20).

2. A four-edged drill with adjustable drilling depth according to claim 1, characterized in that: The cutter body includes: A main cutting edge (1), the main cutting edge (1) being arranged at the front end of the cutter body; A secondary cutting edge (2), the secondary cutting edge (2) being arranged on the peripheral side of the cutter body; A chip removal groove (3), the chip removal groove (3) being arranged on the peripheral side of the cutter body; Four main cutting edges (1), four secondary cutting edges (2) and four chip removal grooves (3) are provided.

3. The four-edge drill with adjustable drilling depth according to claim 1, characterized in that: The second knife handle (5) is provided with a connecting rod (7), and the connecting rod (7) is a regular hexagonal prism.

4. The four-edge drill with adjustable drilling depth according to claim 1, characterized in that: The connecting rod (7) is provided with an arc-shaped positioning groove (8).

5. The four-edge drill with adjustable drilling depth according to claim 1, characterized in that: Also includes: A conical spiral tip (9) is arranged on the top end of the knife body.

6. The four-edge drill with adjustable drilling depth according to claim 1, characterized in that: The second knife handle (5) also includes: A second threaded hole (10) is provided on the end of the second tool handle (5) and can be matched with the screw rod (6).

7. The four-edge drill with adjustable drilling depth according to claim 1, characterized in that: The outermost side of the main cutting edge (1) is provided with a tip (11).

8. The four-edge drill with adjustable drilling depth according to claim 1, characterized in that: The main cutting edge (1) is made of alloy steel.