Efficient drilling tool

Abstract

The efficient drilling tool comprises a tool bar and a second-stage tool bit, the end of the second-stage tool bit is detachably connected with the end of the tool bar, a first-stage tool bit is arranged at the end, away from the tool bar, of the second-stage tool bit, a sliding cavity is formed in the end, away from the second-stage tool bit, of the tool bar, a sliding bar is connected into the sliding cavity in a sliding mode, and a second-stage tool bit is arranged at the end, away from the second-stage tool bit, of the tool bar. A mounting head is arranged at the end part of the sliding rod, and a limiting structure is arranged between the sliding rod and the sliding cavity. Through the arrangement of the two-stage tool bit, the drilling efficiency is greatly improved, the diameter of the first-stage tool bit is smaller than that of the second-stage tool bit, so that the tip end of the first-stage tool bit is sharper and higher in hardness, a high-efficiency drilling tool hole of the numerical control lathe can be conveniently and rapidly drilled, and then the second-stage tool bit is used for reaming, so that drilling is more efficient.

Description

Technical Field

[0001] The utility model belongs to the technical field of numerical control tools, and in particular relates to a high-efficiency drilling tool. Background Art

[0002] CNC tools are a kind of tools used for cutting processing in mechanical manufacturing. With the continuous development of the CNC lathe industry today, the demand for the corresponding CNC tools is also increasing. In the process of CNC lathe processing, corresponding drilling tools are often used to achieve efficient drilling operations on workpieces.

[0003] At present, the existing drilling tool head and tool rod are an integrated structure, and the tool head is a wearing part due to long-term drilling. When the tool head is damaged, the entire tool needs to be replaced, which greatly increases the cost. In addition, the existing drilling tool only drills through the first-level tool head. Since the first-level tool head takes into account both drilling and hole expansion, the entire diameter is larger, which makes its hardness poor and the drilling efficiency low. Moreover, the CNC lathe tool in the prior art is not convenient for length adjustment, and the length of the tool itself is fixed, resulting in the need to replace tools of different lengths when drilling deeper holes, and then the drilling process requires tools of various specifications, which leads to its low applicability. Utility Model Content

[0004] The utility model aims to provide a high-efficiency drilling tool to solve the technical problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a high-efficiency drilling tool, comprising a tool rod and a secondary tool head, the end of the secondary tool head is detachably connected to the end of the tool rod, a primary tool head is provided at one end of the secondary tool head away from the tool rod, a sliding cavity is provided at one end of the tool rod away from the secondary tool head, a sliding rod is slidably connected in the sliding cavity, a mounting head is provided at the end of the sliding rod, and a limiting structure is provided between the sliding rod and the sliding cavity.

[0006] Preferably, the diameter of the primary cutter head is smaller than the diameter of the secondary cutter head.

[0007] Preferably, a socket is provided at one end of the knife rod away from the sliding rod, two first countersunk holes connected to the socket are provided at the bottom of the knife rod, an insert block is provided at one end of the secondary knife head away from the primary knife head, the size of the insert block matches the size of the socket, and two fixing holes corresponding to the first countersunk holes are provided on the surface of the insert block, and the first countersunk holes are fixedly connected to the fixing holes by fixing screws.

[0008] Preferably, the end of the secondary cutter head is provided with three limit blocks distributed in a circular array at the periphery of the insert block, and the end surface of the cutter rod away from the sliding rod is provided with three limit grooves distributed one-to-one corresponding to the limit blocks, and the size of the limit blocks is consistent with the size of the limit grooves.

[0009] Preferably, the limiting groove and the limiting block are both arranged obliquely.

[0010] Preferably, the limiting structure includes a limiting bar and a sliding groove, and four of the limiting bars and the sliding groove are provided. The four limiting bars are distributed in a circular array on the inner wall of the sliding cavity, and the sliding groove is distributed in a circular array on the surface of the sliding rod, and the limiting bar is slidably connected to the sliding groove.

[0011] Preferably, the upper and lower surfaces of the sliding rod are provided with locking grooves along its length direction, and the upper and lower surfaces of the knife rod at one end of the sliding rod are provided with a second countersunk hole connected to the sliding cavity, and the second countersunk hole is threadedly connected with a locking screw, the end of the locking screw is in contact with the locking groove, and the end diameter of the locking screw is consistent with the width of the locking groove.

[0012] The utility model has the following advantages:

[0013] 1. The utility model greatly improves the drilling efficiency by setting up a two-stage cutter head. Since the diameter of the first-stage cutter head is smaller than that of the second-stage cutter head, the tip of the first-stage cutter head is sharper and has a stronger hardness, which facilitates rapid drilling. The second-stage cutter head then expands the hole, making the drilling more efficient. The cutter head is easy to install and disassemble through the cooperation between the plug block and the socket. Since the cutter head is a wearing part, it is easy to replace the cutter head, which greatly saves costs, and the installation and disassembly are simple and quick.

[0014] 2. Through the cooperation between the limit bar and the slide groove, the sliding rod has a good limiting effect, so that the sliding rod can only move along the length direction of the tool rod, and by setting the sliding rod and the tool rod to be slidably connected, it is convenient to flexibly adjust the length of the entire tool to meet drilling operations of different depths, avoid the limitations brought by its fixed length, and then improve its applicability, thereby solving the problem of inconvenient height adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is an exploded view of the secondary cutter head and the cutter bar in the utility model;

[0018] Figure 3 This is an exploded view of the knife bar and the sliding rod in the utility model;

[0019] Figure 4 It is a side view of the sliding rod in the utility model;

[0020] Explanation of markings in the figure: 1. Cutter rod; 2. Secondary cutter head; 3. Primary cutter head; 4. Sliding rod; 5. Mounting head; 6. Socket; 7. Limiting groove; 8. Insert block; 9. Limiting block; 10. First countersunk hole; 11. Fixing hole; 12. Sliding cavity; 13. Limiting strip; 14. Sliding groove; 15. Locking groove; 16. Second countersunk hole; 17. Locking screw. DETAILED DESCRIPTION

[0021] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0022] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0024] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0025] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0026] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of a high-efficiency drilling tool of the utility model in conjunction with the accompanying drawings.

[0027] like Figure 1-4 As shown, the utility model is a high-efficiency drilling tool, including a tool rod 1 and a secondary tool head 2, the end of the secondary tool head 2 is detachably connected to the end of the tool rod 1, and a primary tool head 3 is arranged at one end of the secondary tool head 2 away from the tool rod 1, and the diameter of the primary tool head 3 is smaller than the diameter of the secondary tool head 2. The setting of the two-stage tool heads greatly improves the drilling efficiency. Since the diameter of the primary tool head 3 is smaller than the diameter of the secondary tool head 2, the tip of the primary tool head 3 is sharper and has a stronger hardness, which is convenient for rapid drilling, and then the hole is expanded by the secondary tool head 2, thereby making the drilling more efficient. A socket 6 is provided at the end of the knife rod 1 away from the sliding rod 4, and two first countersunk holes 10 connected to the socket 6 are provided at the bottom of the knife rod 1. An insert block 8 is provided at the end of the secondary knife head 2 away from the primary knife head 3. The size of the insert block 8 is consistent with the size of the socket 6, and two fixing holes 11 corresponding to the first countersunk holes 10 are provided on the surface of the insert block 8. The first countersunk hole 10 and the fixing hole 11 are fixedly connected by fixing screws. The cooperation between the insert block 8 and the socket 6 facilitates the installation and disassembly of the knife head. Since the knife head is a wearing part, it is convenient to replace the knife head, which greatly saves costs, and the installation and disassembly are simple and quick.

[0028] The end of the secondary cutter head 2 is located at the periphery of the plug block 8 and is provided with three limit blocks 9 distributed in a circular array. The end surface of the tool rod 1 away from the sliding rod 4 is provided with three limit grooves 7 distributed one by one with the limit blocks 9. The size of the limit block 9 is consistent with the size of the limit groove 7. The limit groove 7 and the limit block 9 are both inclined. Through the cooperation between the limit block 9 and the limit groove 7, when the plug block 8 is inserted into the socket 6, the limit block 9 will be inserted into the corresponding limit groove 7, which has a good limiting effect on the tool head, making the connection between the tool head and the tool rod 1 tighter and more firmly.

[0029] A sliding cavity 12 is provided at one end of the tool rod 1 away from the secondary tool head 2, and a sliding rod 4 is slidably connected in the sliding cavity 12. A mounting head 5 is provided at the end of the sliding rod 4, and a limiting structure is provided between the sliding rod 4 and the sliding cavity 12. The limiting structure includes a limiting strip 13 and a sliding groove 14. Four limiting strips 13 and four sliding grooves 14 are provided. The four limiting strips 13 are distributed in a circular array on the inner wall of the sliding cavity 12, and the sliding grooves 14 are distributed in a circular array on the surface of the sliding rod 4, and the limiting strip 13 is slidably connected to the sliding groove 14. Through the cooperation between the limiting strip 13 and the sliding groove 14, a good limiting effect is played on the sliding rod 4, so that the sliding rod 4 can only move along the length direction of the tool rod 1, and by setting the sliding rod 4 to be slidably connected to the tool rod 1, it is convenient to flexibly adjust the length of the entire tool to meet the drilling operations of different depths, avoid the limitations brought by its fixed length, and then improve its applicability, thereby solving the problem of inconvenient height adjustment. The upper and lower surfaces of the sliding rod 4 are provided with locking grooves 15 along its length direction, and the upper and lower surfaces of the tool rod 1 at one end of the sliding rod 4 are provided with second countersunk holes 16 connected with the sliding cavity 12. The second countersunk hole 16 is internally threaded with a locking screw 17, and the end of the locking screw 17 contacts with the locking groove 15, and the end diameter of the locking screw 17 matches the width of the locking groove 15. Through the cooperation between the locking groove 15, the second countersunk hole 16 and the locking screw 17, the sliding rod 4 can be locked and fixed by increasing the friction force, so that the length adjustment of the tool is simple and quick.

[0030] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A high-efficiency drilling tool, characterized in that: The utility model comprises a knife bar (1) and a secondary knife head (2), wherein the end of the secondary knife head (2) is detachably connected to the end of the knife bar (1), a primary knife head (3) is arranged at one end of the secondary knife head (2) away from the knife bar (1), a sliding cavity (12) is arranged at one end of the knife bar (1) away from the secondary knife head (2), a sliding rod (4) is slidably connected in the sliding cavity (12), a mounting head (5) is arranged at the end of the sliding rod (4), and a limiting structure is arranged between the sliding rod (4) and the sliding cavity (12).

2. The high-efficiency drilling tool according to claim 1, characterized in that: The diameter of the primary cutter head (3) is smaller than the diameter of the secondary cutter head (2).

3. The high-efficiency drilling tool according to claim 1, characterized in that: The end of the knife rod (1) away from the sliding rod (4) is provided with a socket (6), and the bottom of the knife rod (1) is provided with two first countersunk holes (10) connected to the socket (6). The end of the secondary knife head (2) away from the primary knife head (3) is provided with an insert block (8), the size of the insert block (8) is consistent with the size of the socket (6), and the surface of the insert block (8) is provided with two fixing holes (11) distributed corresponding to the first countersunk holes (10), and the first countersunk holes (10) and the fixing holes (11) are fixedly connected by fixing screws.

4. The high-efficiency drilling tool according to claim 3, characterized in that: The end of the secondary cutter head (2) is provided with three limit blocks (9) distributed in a circular array at the periphery of the insert block (8); the surface of one end of the cutter rod (1) away from the sliding rod (4) is provided with three limit grooves (7) distributed one-to-one with the limit blocks (9); the size of the limit blocks (9) is consistent with the size of the limit grooves (7).

5. The high-efficiency drilling tool according to claim 4, characterized in that: The limiting groove (7) and the limiting block (9) are both arranged at an inclination.

6. The high-efficiency drilling tool according to claim 1, characterized in that: The limiting structure comprises a limiting strip (13) and a slide groove (14), wherein four limiting strips (13) and four slide grooves (14) are provided, wherein the four limiting strips (13) are distributed in a circular array on the inner wall of the sliding cavity (12), and the slide grooves (14) are distributed in a circular array on the surface of the sliding rod (4), and the limiting strips (13) are slidably connected to the slide grooves (14).

7. The high-efficiency drilling tool according to claim 1, characterized in that: The upper and lower surfaces of the sliding rod (4) are provided with locking grooves (15) along the length direction thereof, and the upper and lower surfaces of the knife rod (1) located at one end of the sliding rod (4) are provided with a second countersunk hole (16) connected to the sliding cavity (12), and the second countersunk hole (16) is internally threadedly connected with a locking screw (17), and the end of the locking screw (17) is in contact with the locking groove (15), and the end diameter of the locking screw (17) is consistent with the width of the locking groove (15).

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