CN210061460U

CN210061460U - Drill bit convenient for wood slotting

Info

Publication number: CN210061460U
Application number: CN201920337498.9U
Authority: CN
Inventors: 栾阿林
Original assignee: Jiangsu Universal Machinery Tools Co Ltd
Current assignee: Jiangsu Universal Machinery Tools Co Ltd
Priority date: 2019-03-18
Filing date: 2019-03-18
Publication date: 2020-02-14
Anticipated expiration: 2029-03-18

Abstract

The utility model discloses a drill bit convenient to timber fluting, including main drilling portion and cup joint the vice drilling portion at main drilling portion outer wall, main drilling portion includes that the cross section is regular polygon structure's spliced pole, the spliced pole bottom is equipped with first polygon prism, first polygon prism bottom is equipped with the second polygon prism, second polygon prism bottom is equipped with coniform main drill bit, main drill bit top outer wall is equipped with cyclic annular arch, vice drilling portion includes the center pillar, center pillar top center department is equipped with the third polygon prism, the center pillar bottom is equipped with cylindric vice drill bit, vice drill bit bottom outer wall seted up with the draw-in groove of cyclic annular arch looks adaptation, third polygon prism bottom set up with the first polygon hole of first polygon prism looks adaptation. The utility model discloses can satisfy not unidimensional grooved requirement, can fix a position the fluting position, prevent to lead to the fluting to be not conform to the condition of production requirement because of timber is too hard or other reasons cause the drill bit whole to rock, shorten saw-dust exhaust stroke, guarantee fluting efficiency.

Description

Drill bit convenient for wood slotting

Technical Field

The utility model relates to a drilling tool drill bit technical field especially relates to a drill bit convenient to timber fluting.

Background

The drill bit is a cutting tool adopted by a common drill or a drilling machine to cut a circular hole, the basic principle of the drill bit is to enable the drill bit to cut edges and rotate, cut workpieces and remove drill cuttings through a drill groove, and the commonly used drill bits mainly comprise a twist drill, a flat drill, a center drill, a deep hole drill and a trepanning drill.

Through search, chinese patent No. CN207616796U discloses a slotting drill bit for wood, which includes a cylindrical drill bit body, wherein an auger thread is formed on an outer side wall of the drill bit body, an annular groove is formed on the outer side wall of the drill bit body in a surrounding manner, and a telescopic slotting cutter body is formed in the annular groove.

One of the above-mentioned patents for wood grooving drill has the following disadvantages: during grooving, the drill bit can shake due to over-hardness of wood or other reasons, so that the groove type formed does not meet the requirement, and the other drill bit can only form a groove with the diameter requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a drill bit convenient for wood slotting.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a drill bit convenient for wood grooving comprises a main drill part and an auxiliary drill part sleeved on the outer wall of the main drill part, wherein the main drill part comprises a connecting column with a cross section in a regular polygon structure, and the bottom of the connecting column is provided with a first polygon prism, the bottom of the first polygon prism is provided with a second polygon prism, a conical main drill bit is arranged at the bottom of the second polygon prism, an annular bulge is arranged on the outer wall of the top of the main drill bit, the auxiliary drill part comprises a middle column, a third polygon prism is arranged at the center of the top of the middle column, and the bottom of the middle column is provided with a cylindrical auxiliary drill bit, the outer wall of the bottom of the auxiliary drill bit is provided with a clamping groove matched with the annular bulge, the centers of the bottom of the third polygon prism and the top of the middle column are both provided with first polygon holes matched with the first polygon prism, and the centers of the outer walls of the tops of the auxiliary drill bit and the middle column are provided with second polygonal holes matched with the outer walls of the second polygonal column.

Preferably, threaded holes are formed in the outer wall of the first polygon prism and distributed horizontally at equal intervals, through holes are formed in the outer wall of the third polygon prism, close to the threaded holes, and the threaded holes and the through holes are fixedly matched through bolts.

Preferably, the outer wall of the main drill bit is provided with first chip guide grooves spirally extending upwards at equal intervals, and a first knife edge is arranged at one side of the outer wall of the main drill bit, which is close to the first chip guide grooves.

Preferably, the side wall of the auxiliary drill bit is provided with second chip guide grooves spirally extending upwards at equal intervals, and a second knife edge is arranged at one side of the side wall of the auxiliary drill bit, which is close to the second chip guide grooves.

Preferably, the outer wall of the bottom of the auxiliary drill bit near the second chip guide groove is provided with a third chip guide groove in an arc shape, and a third knife edge is arranged on one side of the outer wall of the bottom of the auxiliary drill bit near the third chip guide groove.

Preferably, a fourth knife edge is arranged on the outer wall of the bottom of the auxiliary drill bit along the outer circumference, and the bottom edge of the fourth knife edge is of a circular arc structure.

Preferably, the connecting column, the first polygonal column, the second polygonal column, the main drill bit and the annular protrusion are of an integrally formed structure, and the middle column, the third polygonal column and the auxiliary drill bit are of an integrally formed structure.

The utility model has the advantages that:

1. through the setting of main drill portion and vice drill portion for main drill portion can arrange the vice drill portion of various different specifications and slot, satisfy not unidimensional grooved requirement, through the setting of main drill bit, can fix a position the slot position before vice drill bit work, through the setting of fourth edge of a knife, can present before the third edge of a knife work of vice drill bit spacing in the circular slot scope that the fourth edge of a knife was seted up with vice drill bit, prevent to lead to the condition that the fluting is not conform to the production requirement because of timber is too hard or other reasons cause the drill bit whole to rock.

2. The design of vice drill bit is flat cylindric, shortens saw-dust exhaust stroke, prevents that the saw-dust from blockking up the inconvenience that causes in the drill bit, the guarantee fluting efficiency.

Drawings

Fig. 1 is a front view of a drill bit for facilitating wood grooving according to the present invention;

FIG. 2 is a front view of a main drilling portion of the drill bit for facilitating wood grooving according to the present invention;

fig. 3 is the bottom schematic view of the assistant drilling part of the drill bit for facilitating wood grooving of the present invention.

In the figure: the drill bit comprises a main drill part 1, a secondary drill part 2, a connecting column 3, a first polygon prism 4, a second polygon prism 5, a main drill bit 6, a central column 7, a third polygon prism 8, a secondary drill bit 9, a clamping groove 10, a first polygon hole 11, a second polygon hole 12, a threaded hole 401, a first chip guide groove 601, a first knife edge 602, an annular bulge 603, a second chip guide groove 901, a second knife edge 902, a third chip guide groove 903, a third knife edge 904 and a fourth knife edge 905.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a drill bit convenient for wood grooving comprises a main drill part 1 and an auxiliary drill part 2 sleeved on the outer wall of the main drill part 1, wherein the main drill part 1 comprises a connecting column 3 with a cross section of a regular polygon structure, a first polygon prism 4 is arranged at the bottom of the connecting column 3, a second polygon prism 5 is arranged at the bottom of the first polygon prism 4, a conical main drill 6 is arranged at the bottom of the second polygon prism 5, an annular bulge 603 is arranged on the outer wall of the top of the main drill 6, the auxiliary drill part 2 comprises a center column 7, a third polygon prism 8 is arranged at the center of the top of the center column 7, threaded holes 401 are arranged on the outer wall of the first polygon prism 4 at equal intervals and horizontally distributed, a through hole is arranged on the outer wall of the third polygon prism 8 close to the threaded hole 401, the threaded hole 401 and the through hole form fixed fit through a bolt, a cylindrical auxiliary drill bit 9 is arranged at the bottom of the, the first many arriss hole 11 with the 4 looks adaptations of first many arriss hole is all seted up with 7 top centers departments of center pillar in third polygon prism 8 bottom and center pillar, and the many arriss hole 12 of second with 5 outer wall looks adaptations of second many prism is all seted up in 7 top outer wall centers departments of auxiliary drill bit 9 and center pillar, and spliced pole 3, first many prism 4, second many prism 5, main drill bit 6 and annular arch 603 are the integrated into one piece structure, and center pillar 7, third many prism 8 and auxiliary drill bit 9 are the integrated into one piece structure.

In the utility model, the outer wall of the first polygon prism 4 is provided with a threaded hole 401 with equal distance horizontal distribution, the outer wall of the third polygon prism 8 is provided with a through hole near the threaded hole 401, the threaded hole 401 and the through hole form fixed matching through a bolt, the outer wall of the main bit 6 is provided with a first chip guide groove 601 with equal distance spiral upward extension, one side of the outer wall of the main bit 6 near the first chip guide groove 601 is provided with a first knife edge 602, the side wall of the auxiliary bit 9 is provided with a second chip guide groove 901 with equal distance spiral upward extension, one side of the side wall of the auxiliary bit 9 near the second chip guide groove 901 is provided with a second knife edge 902, the outer wall of the bottom of the auxiliary bit 9 near the second chip guide groove 901 is provided with a circular arc-shaped third chip guide groove 903, one side of the outer wall of the bottom of the auxiliary bit 9 near the third chip guide groove 903 is provided with, the bottom edge of the fourth cutting edge 905 is of an arc-shaped structure, the connecting column 3, the first polygonal column 4, the second polygonal column 5, the main drill bit 6 and the annular protrusion 603 are of an integrally formed structure, and the middle column 7, the third polygonal column 8 and the auxiliary drill bit 9 are of an integrally formed structure.

The working principle is as follows: the main drill part 1 is matched with a plurality of auxiliary drill parts 2 with different diameters and specifications, the main drill part 1 can be matched with the auxiliary drill parts 2 with different specifications for slotting, the requirement of slotting with different sizes is met, through the arrangement of the main drill bit 6, the position of the slot can be positioned before the auxiliary drill bit 9 works, and by the arrangement of the fourth knife edge 905, the auxiliary drill bit 9 can be limited in the circular groove range formed by the fourth knife edge 905 before the third knife edge 904 of the auxiliary drill bit 9 works, the situation that the grooving is not in accordance with the production requirement due to the whole shaking of the drill bit caused by over-hardness of wood or other reasons is prevented, through the setting of 6 annular archs 603 in top of main drill bit and 9 bottom draw-in grooves 10 of vice drill bit, the saw-dust enters main drill part 1 and the joint position of vice drill part 2 when preventing to open the slot, ensures drill bit safe in utilization, and vice drill bit 9 designs for flat cylindric, shortens saw-dust exhaust stroke, prevents that the saw-dust from blockking up the inconvenience that causes in the drill bit.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The drill bit convenient for wood grooving comprises a main drill part (1) and an auxiliary drill part (2) sleeved on the outer wall of the main drill part (1), and is characterized in that the main drill part (1) comprises a connecting column (3) with a cross section of a regular polygon structure, a first polygon prism (4) is arranged at the bottom of the connecting column (3), a second polygon prism (5) is arranged at the bottom of the first polygon prism (4), a conical main drill bit (6) is arranged at the bottom of the second polygon prism (5), an annular bulge (603) is arranged on the outer wall of the top of the main drill bit (6), the auxiliary drill part (2) comprises a middle column (7), a third polygon prism (8) is arranged at the center of the top of the middle column (7), a cylindrical auxiliary drill bit (9) is arranged at the bottom of the middle column (7), a clamping groove (10) matched with the annular bulge (603) is formed in the outer wall of the bottom of the auxiliary drill bit, and a first polygonal hole (11) matched with the first polygonal column (4) is formed in the center of the bottom of the third polygonal column (8) and the top of the center column (7), and a second polygonal hole (12) matched with the outer wall of the second polygonal column (5) is formed in the center of the outer wall of the top of the auxiliary drill bit (9) and the center column (7).

2. The drill bit for facilitating wood grooving is characterized in that threaded holes (401) are formed in the outer wall of the first polygonal column (4) and are distributed horizontally at equal intervals, through holes are formed in the outer wall of the third polygonal column (8) close to the threaded holes (401), and the threaded holes (401) and the through holes are fixedly matched through bolts.

3. The drill bit convenient for wood grooving is characterized in that the outer wall of the main drill bit (6) is provided with first chip guide grooves (601) extending upwards in a spiral mode at equal intervals, and a first knife edge (602) is arranged on one side, close to the first chip guide grooves (601), of the outer wall of the main drill bit (6).

4. The drill bit convenient for wood grooving is characterized in that the side wall of the auxiliary drill bit (9) is provided with second chip guide grooves (901) which extend upwards in a spiral mode at equal intervals, and a second knife edge (902) is arranged on one side, close to the second chip guide grooves (901), of the side wall of the auxiliary drill bit (9).

5. The drill bit convenient for wood grooving according to claim 1, wherein the outer wall of the bottom of the auxiliary drill bit (9) near the second chip guide groove (901) is provided with a third chip guide groove (903) with a circular arc shape, and a third cutting edge (904) is arranged on the outer wall of the bottom of the auxiliary drill bit (9) near one side of the third chip guide groove (903).

6. The drill bit convenient for wood slotting according to claim 1, wherein a fourth knife edge (905) is arranged on the outer wall of the bottom of the auxiliary drill bit (9) along the outer circumference, and the bottom edge of the fourth knife edge (905) is of an arc-shaped structure.

7. The drill bit for facilitating wood grooving according to claim 1, wherein the connecting column (3), the first polygonal column (4), the second polygonal column (5), the main drill bit (6) and the annular protrusion (603) are of an integrally formed structure, and the central column (7), the third polygonal column (8) and the auxiliary drill bit (9) are of an integrally formed structure.