Metal drill bit for trepanning

Abstract

The embodiment of the utility model discloses a metal drill bit for punching in the technical field of punching drill bits. Comprising a drill bit body, and a drill handle used for limiting the drill bit body is installed at the right end of the drill bit body. When the drill bit body is installed, a rotating cover is rotated, a connector moves towards the interior of a groove cavity of an inserting hole, then a pushing assembly is driven to abut against a pushing block, a pushing column moves leftwards, the left side of the pushing column synchronously extrudes a second pushing rod, the second pushing rod gradually gets close to the left wall of a groove cavity of a first limiting hole, and the second pushing rod is driven to move leftwards; the two ends of a second push rod are made to get close to the groove walls of the upper end and the lower end of a first limiting hole, meanwhile, a sliding block is extruded through a sliding groove, the first elastic end is made to deform, finally, a first push rod is made to be better attached to the inner wall of the first limiting hole, an inserting column is inserted into a hole cavity of a third limiting hole through a second limiting hole, and locking of the connector is completed.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of drilling bits, and in particular to a metal drill bit for drilling holes. Background Art

[0002] In the prior art, when a workpiece needs to be drilled, a metal drill is often used to drill the hole. The common metal drill rotates around a vertical axis and moves axially at the same time. The drilled material is cut under the action of the torque and axial force of the drill.

[0003] For example, a small-sized metal drill bit with a shank disclosed in Chinese patent application number CN202122735513.5 has the following specific contents: the drill bit is connected to the drill shank by the adhesive. Specifically, a socket is provided at one end of the drill shank. A conical section is provided at the bottom end of the socket. The drill bit includes a main body inserted in the socket, a cutting section arranged at one end of the main body, and an insertion section arranged at the other end of the main body. The insertion section is conical and fits with the conical section. When the main body is inserted into the socket, the main body and the socket are coaxially arranged through the guiding effect of the insertion section and the side wall of the conical section. The following technical problems exist:

[0004] The drill bit and the drill handle are bonded by adhesive. If the bonding is loose, the drill bit is easy to fall off from the drill handle. In addition, the adhesive needs time to solidify after bonding, so it is inconvenient to install the drill bit. Utility Model Content

[0005] To this end, an embodiment of the utility model provides a metal drill bit for drilling a hole to solve the problem of the inconvenience of installing the drill bit in the prior art.

[0006] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0007] A metal drill bit for drilling a hole comprises a drill bit body.

[0008] A drill handle for limiting the position of the drill body is installed at the right end of the drill body.

[0009] The drill body comprises a spiral cutting head for drilling holes, and one end of the spiral cutting head is connected to a connecting head for limiting the spiral cutting head.

[0010] A rotating cover for locking the connecting head in cooperation with the drill handle is movably installed at the left end of the connecting head.

[0011] A locking assembly for cooperating with a rotating cover to lock the spiral cutting head is installed inside the connecting head, and a pushing assembly for cooperating with a drill handle to control the movement of the locking assembly is connected to the middle of the locking assembly.

[0012] The connector includes a fixing column, a limiting hole 1 for limiting the locking component and the pushing component is opened in the middle of the right side of the fixing column, and a plurality of limiting holes 2 are opened at the upper and lower ends of the limiting hole 1.

[0013] The locking assembly includes a push rod 1, one side of which is equipped with a plug column for telescoping in the cavity of the limiting hole 2, and the other side of the push rod 1 is equipped with a slider for cooperating with the pushing assembly to push the push rod 1, and the slider is a trapezoidal slider, and the left end of the push rod 1 is provided with an elastic end 1.

[0014] The locking assembly comprises a push rod 2, and two push rods 1 are respectively located at two ends of the push rod 2, and a second elastic end is arranged in the middle of the push rod 2.

[0015] The pushing component comprises a pushing column for squeezing the push rod 2, and both upper and lower ends of the pushing column are provided with sliding grooves for the sliding block to slide, and the sliding grooves are trapezoidal sliding grooves.

[0016] Furthermore, a limiting groove for limiting the rotating cover is provided at the left end of the fixing column, and the limiting groove is an annular groove cavity.

[0017] Furthermore, the drill shank comprises a drill shank body, and a left outer wall of the drill shank body is provided with an external thread for cooperating with a rotating cover to fix the connector.

[0018] Furthermore, a socket for extension and retraction of the connecting head is provided in the middle of the left side of the drill handle body, a push block for pushing the pushing component is installed on the right wall of the hole cavity of the socket, and limiting holes three for limiting the insertion column are provided on the inner walls of the upper and lower ends of the socket.

[0019] The utility model embodiment has the following advantages:

[0020] When installing the drill body, the rotating cover is rotated to move the connector toward the groove of the jack, thereby driving the pushing assembly and the push block to collide, causing the pushing column to move to the left, and the left side of the pushing column simultaneously squeezes the push rod 2, and the push rod 2 gradually approaches the left wall of the groove of the limiting hole 1, thereby driving the elastic end 2 to deform, so that the two ends of the push rod 2 approach the upper and lower groove walls of the limiting hole 1, and at the same time, the sliding groove squeezes the slider to deform the elastic end 1, and finally makes the push rod 1 and the inner wall of the limiting hole 1 fit better, and the plug column is inserted into the hole cavity of the limiting hole 3 through the limiting hole 2 to complete the locking of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0022] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the drill body of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the connector of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the locking assembly of the utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the propulsion assembly of the utility model;

[0028] Figure 6 It is a structural schematic diagram of the drill handle of the utility model.

[0029] In the figure: 001-drill body;

[0030] 100- spiral cutting head, 200- connecting head, 210- fixing column, 211- limiting groove, 212- limiting hole 1, 213- limiting hole 2;

[0031] 300-rotating cover, 400-locking assembly, 410-push rod 1, 411-insertion column, 412-sliding block, 413-elastic end 1, 420-push rod 2, 421-elastic end 2, 500-pushing assembly, 510-pushing column, 511-sliding groove;

[0032] 002-drill handle;

[0033] 600-drill handle body, 610-external thread, 620-socket, 621-push block, 622-limit hole three. DETAILED DESCRIPTION

[0034] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0036] See also Figure 1-Figure 6 The utility model provides a metal drill bit for opening a hole.

[0037] The drill body 001 includes a spiral cutting head 100 for drilling holes, and the right end of the spiral cutting head 100 is fixedly connected to a connector 200 for limiting the spiral cutting head 100. The connector 200 includes a fixing column 210, and the left end of the fixing column 210 is provided with a limiting groove 211 for limiting the rotating cover 300, and the limiting groove 211 is an annular groove cavity, and the rotating cover 300 can rotate in the groove cavity of the limiting groove 211. A limiting hole 1 212 for limiting the locking component 400 and the pushing component 500 is provided in the middle of the right side of the fixing column 210, and a plurality of limiting holes 213 are provided at the upper and lower ends of the limiting hole 1 212.

[0038] A rotating cover 300 is movably installed at the left end of the connecting head 200 for locking the connecting head 200 in cooperation with the drill handle 002. The inner wall of the rotating cover 300 is provided with an internal thread for fixing the rotating cover 300 in cooperation with the external thread 610, so that the connecting head 200 is firmly fixed in the groove cavity of the socket 620, and the spiral cutting head 100 is locked synchronously, so as to facilitate the rotation of the spiral cutting head 100 for drilling.

[0039] A locking assembly 400 for locking the spiral cutting head 100 in cooperation with the rotating cover 300 is installed inside the connector 200, and the locking assembly 400 is in the groove cavity of the limiting hole 1 212. The locking assembly 400 includes a push rod 1 410, and two push rods 1 410 are provided, and are symmetrically arranged at the upper and lower groove cavities of the fixed column 210. A plurality of plugs 411 for telescopic extension in the hole cavity of the limiting hole 213 are fixedly installed on one side of the push rod 1 410, and a slider 412 for pushing the push rod 1 410 in cooperation with the pushing assembly 500 is fixedly installed on the other side of the push rod 1 410, and the slider 412 is a trapezoidal slider, and the left side height of the slider 412 is higher than the right side height of the slider 412. An elastic end 1 413 is provided at the left end of the push rod 1 410, and the elastic end 1 413 is arranged in an arc shape.

[0040] When the pushing component 500 moves from the right side of the groove cavity of the limiting hole 212 to the left side of the groove cavity of the limiting hole 212, the slider 412 slides from the left side of the groove cavity of the slide groove 511 to the right side of the groove cavity of the slide groove 511, so that the slider 412 drives the push rod 410 to approach the inner wall of the limiting hole 212, and drives the plug 411 to move toward the hole cavity of the limiting hole three 622.

[0041] The locking assembly 400 includes a second push rod 420 , and two first push rods 410 are respectively located at two ends of the second push rod 420 . A second elastic end 421 is disposed in the middle of the second push rod 420 , and the second elastic end 421 is disposed in an arc shape.

[0042] The middle part of the locking assembly 400 is connected to a pushing assembly 500 for cooperating with the drill handle 002 to control the movement of the locking assembly 400. The pushing assembly 500 includes a pushing column 510 for squeezing the push rod 2 420. The upper and lower ends of the pushing column 510 are provided with a sliding groove 511 for the sliding of the slider 412, and the sliding groove 511 is a trapezoidal sliding groove. The depth of the left groove cavity of the sliding groove 511 is greater than the depth of the right groove cavity of the sliding groove 511.

[0043] The right end of the drill body 001 is provided with a drill handle 002 for limiting the drill body 001. The drill handle 002 includes a drill handle body 600. The left outer wall of the drill handle body 600 is provided with an external thread 610 for cooperating with the rotating cover 300 to fix the connector 200. When the drill body 001 is installed, the rotating cover 300 is rotated to move the connector 200 into the groove cavity of the plug hole 620, thereby driving the push assembly 500 and the push block 621 to collide. The left middle part of the drill handle body 600 is provided with a plug hole 620 for the connector 200 to be extended and retracted. The right wall of the hole cavity of the plug hole 620 is fixedly provided with a push block 621 for pushing the push assembly 500. The inner walls of the upper and lower ends of the plug hole 620 are provided with limit holes 622 for limiting the plug column 411.

[0044] When the push block 621 and the right side of the push column 510 collide with each other, the push column 510 is driven to move to the left, and the left side of the push column 510 simultaneously squeezes the push rod 420, and the push rod 420 gradually approaches the left wall of the groove cavity of the limiting hole 212, thereby driving the elastic end 421 to deform, so that the two ends of the push rod 420 are close to the upper and lower groove walls of the limiting hole 212, and at the same time, the sliding groove 511 squeezes the slider 412 to deform the elastic end 413, and finally the push rod 410 and the inner wall of the limiting hole 212 are more closely fitted, and the plug 411 is inserted into the cavity of the limiting hole 622 through the limiting hole 213, thereby completing the locking of the connector 200.

[0045] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A metal drill bit for drilling a hole, comprising a drill bit body (001), characterized in that: A drill handle (002) for limiting the position of the drill body (001) is installed at the right end of the drill body (001); The drill bit body (001) comprises a spiral cutting head (100) for drilling holes, and one end of the spiral cutting head (100) is connected to a connecting head (200) for limiting the position of the spiral cutting head (100); A rotating cover (300) is movably mounted on the left end of the connector (200) and is used to cooperate with the drill handle (002) to lock the connector (200); A locking assembly (400) for cooperating with the rotating cover (300) to lock the spiral cutting head (100) is installed inside the connecting head (200), and a pushing assembly (500) for cooperating with the drill handle (002) to control the movement of the locking assembly (400) is connected to the middle of the locking assembly (400); The connector (200) comprises a fixing column (210), a first limiting hole (212) for limiting the locking assembly (400) and the pushing assembly (500) is provided in the middle of the right side of the fixing column (210), and a plurality of second limiting holes (213) are provided at both the upper and lower ends of the first limiting hole (212); The locking assembly (400) comprises a push rod 1 (410), one side of which is provided with a plug post (411) for telescoping in the cavity of the second limiting hole (213), and the other side of which is provided with a slider (412) for cooperating with the pushing assembly (500) to push the push rod 1 (410), wherein the slider (412) is a trapezoidal slider, and the left end of the push rod 1 (410) is provided with an elastic end 1 (413); The locking assembly (400) comprises a second push rod (420), and two first push rods (410) are respectively located at two ends of the second push rod (420), and a second elastic end (421) is provided in the middle of the second push rod (420); The pushing assembly (500) comprises a pushing column (510) for squeezing the second push rod (420), and the upper and lower ends of the pushing column (510) are both provided with a slide groove (511) for the sliding block (412) to slide, and the slide groove (511) is a trapezoidal slide groove.

2. A metal drill bit for drilling a hole according to claim 1, characterized in that: A limiting groove (211) for limiting the position of the rotating cover (300) is provided at the left end of the fixing column (210), and the limiting groove (211) is an annular groove cavity.

3. A metal drill bit for drilling a hole according to claim 1, characterized in that: The drill shank (002) comprises a drill shank body (600), and a left outer wall of the drill shank body (600) is provided with an external thread (610) for cooperating with a rotating cover (300) to fix a connecting head (200).

4. A metal drill bit for drilling a hole according to claim 3, characterized in that: A socket (620) for allowing the connector (200) to extend and retract is provided in the middle of the left side of the drill handle body (600), a push block (621) for pushing the push assembly (500) is installed on the right wall of the hole cavity of the socket (620), and a limiting hole (622) for limiting the insertion column (411) is provided on the inner walls of the upper and lower ends of the socket (620).

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