Flat-bottomed counter bit with guide structure

Abstract

The utility model belongs to the technical field of countersink drills, particularly relates to a flat-bottom countersink drill with a guide structure, and aims to solve the problem that the existing countersink drill is easy to incline, the flat-bottom countersink drill comprises a drill rod, a drill bit is fixed at the bottom end of the drill rod, a fixing block is mounted outside the drill rod, and a guide mechanism is arranged below the fixing block; the guide mechanism comprises a fixing cylinder, the fixing cylinder and the penetrating rod form a telescopic rod, the telescopic rod is located between the fixing block and the bearing block, the abutting block can abut against the outer wall of a workpiece, and when the workpiece is in a curved shape or an arc shape or an inclined face, the drill bit is guided, and the working stability is improved; and meanwhile, the penetrating-out rod is rotationally connected with the bearing block through the sliding block and the sliding groove, and the bearing block can be prevented from rotating to cause excessive friction between the abutting-against block and a workpiece under the abutting-against of the abutting-against block and the condition that the drill rod and the fixing block rotate.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flat bottom counter sink drill, in particular to a flat bottom counter sink drill with a guide structure, belongs to counter sink drill technical field. BACKGROUND

[0002] Counter sinking is a kind of metal processing method, refers to the cylindrical counter bore, tapered counter bore or the material around the hole is cut into the plane perpendicular to the axis hole on the processed hole, and the cutter used when counter sinking is called counter sink drill, generally made of high speed steel, the counter sink drill for processing large-diameter boss end face can use hard alloy regrind blade or indexable blade, and is fixed on the cutter body by embedding teeth or chucking method.

[0003] In the prior art, such as the combination counter sink drill disclosed in the announcement No. CN215786953U, the first cutter body, the second cutter body and the connecting piece are arranged, the first cutter body is inserted between the second cutter body, the connecting piece locks the first cutter body and the second cutter body, when in use, the second cutter body is connected with the main shaft of the machine tool, the first cutter body is used for drilling center hole and bottom hole, and the second cutter body is used for counter sinking counter bore in the bottom hole and chamfering the counter bore hole, so that the once-forming counter bore is realized, the use is convenient, and the processing efficiency is relatively high, so that the technical problems of inconvenient operation, low processing efficiency and high processing cost are overcome, the technical effects of convenient operation, relatively high processing efficiency and relatively low processing cost are achieved, the utility is achieved, and the use is facilitated.

[0004] However, in the implementation of the related technology, it is found that the above-mentioned design of a combination counter sink drill has the following problems: although the combination counter sink drill in the prior art achieves convenient operation through the cooperation of the first cutter body and other components, errors or tilting may occur when drilling curved surfaces and inclined surfaces in actual use, therefore, a flat bottom counter sink drill with a guide structure is provided to overcome the above-mentioned defects. UTILITY MODEL CONTENTS

[0005] The utility model provides a flat bottom counter sink drill with a guide structure to solve the technical problem that errors or tilting may occur when drilling curved surfaces and inclined surfaces.

[0006] The utility model realizes the above-mentioned purposes through the following technical scheme: a flat bottom counter sink drill with a guide structure, including the drill rod, the bottom of the drill rod is fixed with the drill bit, and the outside of the drill rod is installed with the fixed block, the lower portion of the fixed block is provided with the guide mechanism.

[0007] The guiding mechanism comprises a fixed cylinder fixed at the bottom end of the fixed block, a spring embedded in the inside of the fixed cylinder, a penetrating rod connected below the spring, a sliding block fixed at the bottom end of the penetrating rod, a bearing block arranged below the fixed block outside the drill rod, a sliding groove opened at the position corresponding to the sliding block at the top end of the bearing block, and an abutting block fixed at the bottom end of the bearing block.

[0008] As a further scheme of the utility model: the penetrating rod and the fixed cylinder constitute an elastic structure through the spring, and the penetrating rod and the bearing block constitute a sliding structure through the sliding block.

[0009] As a further scheme of the utility model: an accommodating groove is opened at the outer wall of the abutting block, and an abutting mechanism is arranged in the inside of the accommodating groove.

[0010] As a further scheme of the utility model: the abutting mechanism comprises a rotating disc rotatably connected at the inner wall of the abutting block, a threaded rod penetrating the inside of the rotating disc, and a sliding plate slidably connected at one end of the threaded rod penetrating the rotating disc.

[0011] As a further scheme of the utility model: the abutting mechanism further comprises a connecting plate rotatably connected at one end of the sliding plate, a rotating plate rotatably connected at the other end of the connecting plate, and a supporting rod penetrating the inner wall of the accommodating groove at one end of the rotating plate.

[0012] As a further scheme of the utility model: the threaded rod is threadedly connected with the sliding plate, and the sliding plate and the accommodating groove constitute a sliding structure.

[0013] As a further scheme of the utility model: the connecting plate and the rotating plate constitute a rotating structure, and the rotating plate and the accommodating groove constitute a rotating structure through the supporting rod.

[0014] The utility model discloses the beneficial effect is: through the fixed cylinder and the penetrating rod constitute the telescopic rod's form, be located between the fixed block and the bearing block, can let the abutting block abut in the workpiece outer wall, when the workpiece is curved, arc or inclined plane, carry out the guiding to drill bit and improve the stability when working, through the spring elasticity telescopic, thereby can reserve the length when drilling bit drills, avoid the situation of limiting, and the penetrating rod is rotatably connected with the bearing block through the sliding block and the sliding groove, can under the abutting of the abutting block, let the drill rod and the fixed block rotate, avoid the bearing block to rotate and let the abutting block and the workpiece excessively rub.

[0015] The utility model discloses the beneficial effect is: through the rotating rotating disc and let the threaded rod push the sliding plate rotate along the accommodating groove, thereby let the connecting plate and the rotating plate, and under the rotating support of the supporting rod, carry out the automatic angle regulation and rotate and form the tripod, and let the rotating plate abut the workpiece, improve the contact area with the workpiece when meeting the curved, arc or inclined plane, thereby keep the stability when guiding the drill bit. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Fig. 2 This is a schematic diagram of the through-rod structure of this utility model;

[0018] Fig. 3 This is a schematic diagram of the threaded rod structure of this utility model;

[0019] Fig. 4 This is a schematic diagram of the support rod structure of this utility model.

[0020] In the diagram: 1. Drill rod; 2. Drill bit; 3. Fixing block; 4. Guide mechanism; 401. Fixing cylinder; 402. Spring; 403. Through rod; 404. Slider; 405. Bearing block; 406. Slide groove; 407. Abutting block; 5. Placement groove; 6. Abutting mechanism; 601. Turntable; 602. Threaded rod; 603. Slide plate; 604. Connecting plate; 605. Rotating plate; 606. Support rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0022] like Figs. 1 to 4As shown, a flat bottomed counter sink drill with a guide structure, including drill rod 1, the bottom end of drill rod 1 is fixed with drill bit 2, the outside of drill rod 1 is installed with fixed block 3, the lower part of fixed block 3 is provided with guide mechanism 4; guide mechanism 4 includes fixed cylinder 401, fixed cylinder 401 is fixed at the bottom end of fixed block 3, spring 402 is embedded in the inside of fixed cylinder 401, the lower part of spring 402 is connected with through rod 403, the bottom end of through rod 403 is fixed with sliding block 404, the lower part of fixed block 3 is provided with bearing block 405, the top end of bearing block 405 is provided with sliding groove 406 corresponding to the position of sliding block 404, the bottom end of bearing block 405 is fixed with abutting block 407, through rod 403 and fixed cylinder 401 constitute elastic structure through spring 402, through rod 403 and bearing block 405 constitute sliding structure through sliding block 404; through the form of telescopic rod composed of fixed cylinder 401 and through rod 403, located between fixed block 3 and bearing block 405, can make abutting block 407 abut on the outer wall of workpiece, when the workpiece is curved, arc or inclined, guide drill bit 2 and improve the stability during work, through the elastic expansion of spring 402, so as to reserve the length of drill bit 2 when drilling, avoid the case of limiting, at the same time, through rod 403 is rotatably connected with bearing block 405 through sliding block 404 and sliding groove 406, can make drill rod 1 and fixed block 3 rotate under the abutting of abutting block 407, avoid the rotation of bearing block 405 so as to make abutting block 407 excessively rub with workpiece. Example two

[0023] In addition to including all the technical features in example one, the outer wall of abutting block 407 is provided with installation groove 5, installation groove 5 is provided with abutting mechanism 6 in the inside, abutting mechanism 6 includes rotating disc 601, rotating disc 601 is rotatably connected with the inner wall of abutting block 407, threaded rod 602 is penetrated into the inside of rotating disc 601, one end of threaded rod 602 penetrating out of rotating disc 601 is slidably connected with sliding plate 603, abutting mechanism 6 further includes connecting plate 604, one end of connecting plate 604 is rotatably connected with sliding plate 603, the other end of connecting plate 604 is rotatably connected with rotating plate 605, one end of rotating plate 605 penetrating into the inner wall of installation groove 5 is provided with supporting rod 606, threaded rod 602 is threadedly connected with sliding plate 603, sliding structure is formed between sliding plate 603 and installation groove 5, rotating structure is formed between connecting plate 604 and rotating plate 605, rotating structure is formed between rotating plate 605 and installation groove 5 through supporting rod 606; by rotating rotating disc 601, threaded rod 602 pushes sliding plate 603 to rotate along installation groove 5, so as to make connecting plate 604 and rotating plate 605 rotate and form tripod through the rotating support of supporting rod 606, and make rotating plate 605 abut on workpiece, when the workpiece is curved, arc or inclined, improve the contact area with workpiece, so as to keep the stability of guiding drill bit 2.

[0024] Working principle: the fixed block 3 fixed on the outer wall of the drill pipe 1 and the bearing block 405, set up through the fixed cylinder 401 and the through-out rod 403 composed of telescopic rod, at the same time through the sliding block 404 along the sliding groove 406 in the bearing block 405 stable sliding, and through the contact block 407 contact on the object to guide effect to avoid deviation, at the same time can let the drill pipe 1 rotation, under the contact of the contact block 407 bearing block 405 does not follow the fixed block 3 rotation, cooperate with the elastic telescopic spring 402 to reserve the drilling distance of drill bit 2, through the rotation of the rotating disc 601 drive threaded rod 602 located in the installation groove 5 inside rotation, thus push the threaded connection of the sliding plate 603 along the installation groove 5 sliding plate, let the connecting plate 604 and the rotating plate 605, and through the support rod 606 support rotation, in the installation groove 5 inside rotation form triangular support frame, improve the contact area with the workpiece, so as to guide and improve the stability when the drill bit 2 drilling, avoid the inclination of deviation.

[0025] For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0026] In addition, it should be understood that although the present application is described in the specification, each embodiment only contains one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be combined appropriately to form other embodiments which can be understood by those skilled in the art.

Claims

1. A counterbore drill having a pilot structure comprising a drill shaft (1), characterized in that: The bottom end of the drill rod (1) is fixed with a drill bit (2), and the outside of the drill rod (1) is provided with a fixed block (3), and the lower portion of the fixed block (3) is provided with a guide mechanism (4); The guide mechanism (4) comprises a fixed cylinder (401), the fixed cylinder (401) is fixed at the bottom end of the fixed block (3), and the inside of the fixed cylinder (401) is embedded with a spring (402), the lower portion of the spring (402) is connected with a through rod (403), and the bottom end of the through rod (403) is fixed with a sliding block (404), the lower portion of the fixed block (3) outside the drill rod (1) is provided with a bearing block (405), and the top end of the bearing block (405) is provided with a sliding groove (406) corresponding to the position of the sliding block (404), and the bottom end of the bearing block (405) is fixed with a resisting block (407).

2. A pilot point as set forth in claim 1, wherein: The through rod (403) and the fixed cylinder (401) constitute an elastic structure through the spring (402), and the through rod (403) and the bearing block (405) constitute a sliding structure through the sliding block (404).

3. The pilot point drill bit of claim 1, wherein: The outer wall of the resisting block (407) is provided with a mounting groove (5), and the inside of the mounting groove (5) is provided with a resisting mechanism (6).

4. A pilot point as set forth in claim 3, characterized in that: The resisting mechanism (6) comprises a rotating disc (601), the rotating disc (601) is rotatably connected to the inner wall of the resisting block (407), and the inside of the rotating disc (601) is provided with a threaded rod (602), one end of the threaded rod (602) penetrating the rotating disc (601) is slidably connected with a sliding plate (603).

5. A pilot point as claimed in claim 4, wherein: The resisting mechanism (6) further comprises a connecting plate (604), one end of the connecting plate (604) is rotatably connected with the sliding plate (603), and the other end of the connecting plate (604) is rotatably connected with a rotating plate (605), and one end of the rotating plate (605) penetrating the mounting groove (5) is provided with a supporting rod (606).

6. The pilot point drill bit of claim 4, wherein: The threaded rod (602) and the sliding plate (603) are threadedly connected, and the sliding plate (603) and the mounting groove (5) constitute a sliding structure.

7. The pilot point drill bit of claim 5, wherein: The connecting plate (604) and the rotating plate (605) constitute a rotating structure, and the rotating plate (605) and the mounting groove (5) constitute a rotating structure through the supporting rod (606).

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