CN217253085U

CN217253085U - Reverse countersink drill

Info

Publication number: CN217253085U
Application number: CN202220922325.5U
Authority: CN
Inventors: 汪雪蓉; 张建; 杨昕
Original assignee: Sichuan Dajing Gaoyue Precision Technology Co ltd
Current assignee: Sichuan Dajing Gaoyue Precision Technology Co ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-08-23
Anticipated expiration: 2032-04-20

Abstract

The utility model belongs to the technical field of machining, a reverse countersink drill is disclosed, including tool bit and cutter arbor, the cutting part of tool bit is located the rear end portion of tool bit, is equipped with the mounting hole on the tool bit, and in the mounting hole was located to the one end of cutter arbor, tool bit and cutter arbor passed through fixed knot and constructed continuously, and fixed knot constructs including seting up the T type groove on the tool bit and locating the flat head of cutter arbor front end, flat overhead vertical section complex inclined plane of going up with T type groove that is equipped with, is equipped with spacing arch in the front end on inclined plane. The utility model provides a reverse countersink drill links to each other through simple fixed knot structure, and the angle and the size precision of tool bit and cutter arbor guarantee, easy dismounting to make simply, the low price.

Description

Reverse countersink drill

Technical Field

The utility model belongs to the technical field of machining, concretely relates to reverse countersink drill.

Background

In the aviation assembly process, reverse countersink drill need be used in many places, but the fixed tool bit of screw or bolt is often adopted to current reverse countersink drill, and is higher to the requirement of processing, and the dismouting is comparatively inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving above-mentioned technical problem to a certain extent at least. Therefore, the utility model aims to provide a reverse countersink drill.

The utility model discloses the technical scheme who adopts does:

a reverse countersink drill comprises a cutter head and a cutter bar, wherein the cutting part of the cutter head is positioned at the rear end part of the cutter head, the cutter head is provided with a mounting hole, one end of the cutter bar is arranged in the mounting hole, and the cutter head is connected with the cutter bar through a fixing structure;

the fixing structure comprises a T-shaped groove formed in the cutter head and a flat head arranged at the front end of the cutter bar, an inclined plane matched with the vertical section of the T-shaped groove is arranged on the flat head, and a limiting bulge is arranged in the front end of the inclined plane;

or the fixing structure comprises a clamping pin, a fixing hole formed in the cutter head and a fixing groove formed in the cutter rod, and the clamping pin penetrates through the fixing hole and is limited by the matching of the clamping pin and the fixing groove.

Preferably, the length of the inclined surface is greater than or equal to that of the vertical section on the T-shaped groove.

Preferably, the fixing groove is an L-shaped groove, and one end of the clamping pin is located in the fixing groove.

Preferably, the middle part of the chucking pin is positioned in the mounting hole and the middle part of the chucking pin is in contact with the fixing groove.

Preferably, the magnetic iron further comprises a mounting handle, the front end of the mounting handle is of a flat structure, and the front end of the mounting handle is provided with a magnet piece.

Preferably, the blade part of the cutter head is a plane or an inclined plane.

The utility model has the advantages that:

the utility model provides a reverse countersink drill links to each other through simple fixed knot structure, and the angle and the size precision of tool bit and cutter arbor guarantee very easily, easy dismounting to make simply, the low price.

Drawings

Fig. 1 is a perspective view of a cutter head according to a first embodiment of the present invention.

Fig. 2 is a perspective view of a cutter bar in the first embodiment of the present invention.

Fig. 3 is a front view of a cutter head according to a first embodiment of the present invention.

Fig. 4 is a front view of the cutter bar in the first embodiment of the present invention.

Fig. 5 is a cross-sectional view taken along a-a of fig. 4.

Fig. 6 is a schematic view of a reverse countersink drill according to a first embodiment of the present invention.

Fig. 7 is a front view of a cutter head according to a second embodiment of the present invention.

Fig. 8 is a side view of a cutter head according to a second embodiment of the present invention.

Fig. 9 is a perspective view of the knife bar in the second embodiment of the present invention.

Fig. 10 is a schematic view of the reverse countersink drill according to the second embodiment of the present invention.

Fig. 11 is a front view of a cutter head according to a third embodiment of the present invention.

Fig. 12 is a side view of a cutter head according to a third embodiment of the present invention.

Fig. 13 is a perspective view of the knife bar in the third embodiment of the present invention.

Fig. 14 is a schematic view of the reverse countersink drill in the third embodiment of the present invention.

In the figure: 1-a cutter head; 2, cutting a cutter bar; 3-mounting holes; 4-T-shaped groove; 5-flat head; 6-inclined plane; 7-limiting protrusions; 8-a clamping pin; 9-a fixed groove; 10-mounting a handle; 11-magnet piece.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

In the description of the embodiments of the present invention, it should be noted that the indication of the position or the positional relationship is based on the position or the positional relationship shown in the drawings, or the position or the positional relationship which is usually placed when the product of the present invention is used, or the position or the positional relationship which is conventionally understood by those skilled in the art, and is only for the convenience of describing the present invention and simplifying the description, but it is not to indicate or suggest that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

The invention will be further described with reference to the accompanying drawings and specific embodiments.

Example one

As shown in fig. 1 to 6, the reverse countersink drill of the present embodiment includes a tool bit 1 and a tool bar 2, wherein a blade portion of the tool bit 1 is located at a rear end portion of the tool bit 1, the tool bit 1 is provided with a mounting hole 3, a front end of the tool bar 2 is inserted into the mounting hole 3, and the tool bit 1 and the tool bar 2 are connected through a fixing structure; the fixed knot constructs including offering the T type groove 4 on tool bit 1 and locating the flat head 5 of 2 front ends of cutter arbor, flat head 5 be equipped with T type groove 4 on vertical section complex inclined plane 6, be equipped with spacing arch 7 in the front end on inclined plane 6, inclined plane 6 is two of parallel arrangement.

As shown in fig. 3 and 4, the length of the inclined plane 6 is 0.2mm greater than that of the vertical section on the T-shaped groove 4; as shown in fig. 3 and 5, the flathead 5 has two parallel surfaces, the distance between the parallel surfaces is equal to the height of the vertical section of the T-shaped groove 4, the two inclined surfaces 6 of the flathead 5 are also parallel to each other, and the distance between the two inclined surfaces is equal to the height of the vertical section of the T-shaped groove 4.

The blade part of the tool bit 1 is a plane and can be used for counterboring a screw counter bore.

When the cutter is used, the cutter rod 2 penetrates through the pre-hole and then penetrates through the cutter head 1, the cutter rod 2 is automatically clamped when rotating rightwards, the cutter head and the cutter rod are clamped by the inclined plane 6 and the vertical section on the T-shaped groove 4, the torque of a cutter is transmitted, and the cutter head 1 cannot fall down due to the existence of the limiting protrusion 7. When the use is finished, the cutter bar 2 is reversed, and the cutter head can be easily taken down.

Example two

As shown in fig. 7 to 10, the reverse countersink drill of the present embodiment includes a tool bit 1 and a tool bar 2, wherein a cutting portion of the tool bit 1 is located at a rear end portion of the tool bit 1, a mounting hole 3 is formed in the tool bit 1, one end of the tool bar 2 is arranged in the mounting hole 3, and the tool bit 1 and the tool bar 2 are connected through a fixing structure; the fixed knot constructs including chucking round pin 8, set up the fixed orifices on tool bit 1 and set up the fixed slot 9 on cutter arbor 2, chucking round pin 8 runs through to install in the fixed orifices and chucking round pin 8 spacing with the fixed slot 9 cooperation.

The fixing groove 9 is an L-shaped groove, and the long groove part of the L-shaped groove is arranged along the length direction of the cutter rod 2.

The blade part of the cutter head 1 is an inclined plane and can reversely ream a screw and rivet taper socket.

When the tool is used, the tool bar 2 penetrates through the pre-hole, then penetrates through the tool bit 1, the front end of the clamping pin 8 enters the long groove part of the L-shaped groove until the front end of the clamping pin 8 reaches the bottom of the long groove part of the L-shaped groove, then the tool bar 2 is rotated rightwards, the front end of the clamping pin 8 enters the short groove part of the L-shaped groove, the tool bit and the tool bar are clamped, and the torque of the tool is transmitted. When the use is finished, the cutter bar 2 is reversed, and the cutter head can be taken down.

EXAMPLE III

As shown in fig. 11 to 14, the reverse countersink of the present embodiment includes a tool bit 1 and a tool bar 2, a blade portion of the tool bit 1 is located at a rear end portion of the tool bit 1, a mounting hole 3 is formed on the tool bit 1, one end of the tool bar 2 is arranged in the mounting hole 3, and the tool bit 1 is connected with the tool bar 2 through a fixing structure; fixed knot constructs including chucking round pin 8, fixed slot 9 and set up the fixed orifices on tool bit 1, and the front end of cutter arbor 2 is flat head, and the edge at flat head is seted up to fixed slot 9, and chucking round pin 8 runs through to be installed in the fixed orifices and chucking round pin 8 spacing with the fixed slot 9 cooperation. Specifically, the middle portion of the chucking pin 8 is positioned in the mounting hole 3 and the middle portion of the chucking pin 8 is in contact with the fixing groove 9.

The reverse countersink drill further comprises an installation handle 10, the front end of the installation handle 10 is of a flat structure, a magnet piece 11 is installed on the front end of the installation handle 10, the tool bit 1 is made of ferromagnetic metal, and the tool bit 1 can be adsorbed by the magnet piece.

The blade part of the cutter head 1 is an inclined plane.

Pass the mounting hole with chucking round pin 8 and lie in mounting hole 3 up to the middle part of chucking round pin 8, adsorb tool bit 1 on magnet piece 11 earlier during the use, place tool bit 1 in the pre-hole below through installation handle 10, tool bar 2 passes the pre-hole, passes tool bit 1 again, then rotates tool bar 2 right, and the middle part of chucking round pin 8 gets into fixed slot 9, blocks tool bit and tool bar, transmits the cutter moment of torsion. When the use is finished, the cutter bar 2 is reversed, and the cutter head can be taken down.

The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all falling within the technical solution of the present invention, all fall within the protection scope of the present invention.

Claims

1. A reverse countersink drill is characterized in that: the cutting tool comprises a tool bit (1) and a tool bar (2), wherein the cutting part of the tool bit (1) is positioned at the rear end part of the tool bit (1), a mounting hole (3) is formed in the tool bit (1), one end of the tool bar (2) is arranged in the mounting hole (3), and the tool bit (1) is connected with the tool bar (2) through a fixing structure;

the fixing structure comprises a T-shaped groove (4) formed in the cutter head (1) and a flat head (5) arranged at the front end of the cutter bar (2), an inclined plane (6) matched with the vertical section of the T-shaped groove (4) is arranged on the flat head (5), and a limiting bulge (7) is arranged in the front end of the inclined plane (6);

or, fixed knot constructs including chucking round pin (8), set up the fixed orifices on tool bit (1) and set up fixed slot (9) on cutter arbor (2), and chucking round pin (8) run through to be installed in the fixed orifices and chucking round pin (8) and fixed slot (9) cooperation spacing.

2. The reverse countersink drill according to claim 1, wherein: the length of the inclined plane (6) is greater than or equal to that of the vertical section on the T-shaped groove (4).

3. A countersink drill according to claim 1, wherein: the fixing groove (9) is an L-shaped groove, and one end of the clamping pin (8) is located in the fixing groove (9).

4. The reverse countersink drill according to claim 1, wherein: the middle part of the clamping pin (8) is positioned in the mounting hole (3) and the middle part of the clamping pin (8) is contacted with the fixing groove (9).

5. The reverse countersink drill according to claim 4, wherein: the front end of the cutter bar (2) is a flat head, and the fixing groove (9) is formed in the edge of the flat head.

6. A countersink drill according to any one of claims 1 to 5, wherein: the magnetic iron sheet is characterized by further comprising an installation handle (10), the front end of the installation handle (10) is of a flat structure, and a magnet piece (11) is installed on the front end of the installation handle (10).

7. A countersink drill according to any one of claims 1 to 5, wherein: the blade part of the cutter head (1) is a plane or an inclined plane.