CN213732291U - Three-edge tooth breaking cutter for wood drilling - Google Patents

Abstract

The utility model discloses a three-blade tooth breaking cutter for wood drilling, a straight channel (7) axially arranged along the cutter body is arranged in the cutter body of a cutter blade section (1), one end of the straight channel (7) runs through the top surface of the cutter body, the other end runs through the bottom surface of a mounting seat (2), a base (8) is welded at the bottom of the mounting seat (2), a square groove (9), a conical hole (10) and a through hole (11) which are mutually communicated are sequentially arranged in the base (8) from bottom to top, the through hole (11) is communicated with the lower port of the straight channel (7), and an external thread (12) is arranged on the cylindrical surface of the base (8); the top of the knife handle (3) is sequentially welded with a coaxially arranged limiting disc (13), a square head (14) and a conical head (15), and the conical head (15) is matched with the conical hole (10). The utility model has the advantages that: compact structure, saving plank processing cost, improvement drilling efficiency.

Description

Three-edge tooth breaking cutter for wood drilling

Technical Field

The utility model relates to a technical field of carpenter's cutter structure, especially a timber drilling is with three sword disconnected tooth cutters.

Background

The wood cutter is used for drilling holes in the wood boards, and the wood boards are conveniently spliced with one another after the holes are drilled to form furniture. The existing woodworking tools comprise a three-edge straight tool, a three-edge tooth-breaking tool, a two-edge straight tool, a spiral tool and the like, wherein the three-edge tooth-breaking tool is widely applied. As shown in fig. 1 is a structural schematic diagram of a three-blade tooth breaking tool, which comprises a blade section 1, a mounting seat 2 and a tool shank 3 welded in sequence from top to bottom, wherein the blade section 1 comprises a tool body, three blade parts 4 are uniformly welded on the cylindrical surface of the tool body along the circumferential direction, the top surfaces of the three blade parts 4 are provided with cutting edges 5 for cutting wood, the cylindrical surface of the blade part 4 is provided with a plurality of chip breakers 6 along the length direction, and the chip breakers 6 are used for cutting off the wood chips in a long strip shape. During the use, supply the handle of a knife 3 in the power tool centre gripping, power tool drives handle of a knife 3 and rotates, and handle of a knife 3 drives cutting edge 5 rotatory, and the cutting edge is in rotatory in-process drilling timber in order to form required hole.

Due to the fact that very hard knots exist in the wood board, the temperature of the cutting edge 5 is rapidly increased, in order to avoid sintering of the cutting edge 5, workers need to lift the cutter handle 3 to take the cutting edge section 1 out of the drilled hole, then the cutting edge 5 is cooled by cutting fluid, and drilling work is continued after cooling, so that the working processed wood board is guaranteed. However, although the three-blade tooth breaking cutter can process wood boards, the following defects still exist: 1. frequent tripping is required, which increases drilling time and thus reduces drilling efficiency. 2. When the three-blade tooth breaking tool is used for a period of processing, the blade section 1 is fatigue-damaged, so that the tool shank 3 welded with the three-blade tooth breaking tool integrally needs to be discarded to replace a new three-blade tooth breaking tool, but the tool shank 3 and the blade section 1 are made of hard alloy materials, the hard alloy materials are high in price, the tool shank 3 can be directly discarded and cannot be reused, and the processing cost for processing the wood board is increased; in order to solve the problem, people adopt threaded connection's mode to connect handle of a knife 3 detachable on cutting edge section 1, external screw thread has been seted up promptly in the one end of handle of a knife 3, and set up the screw hole on mount pad 2, mount pad 2 is through the external screw thread threaded connection of screw hole with handle of a knife 3, after cutting edge section 1 damages, can take off the cutting edge section 1 that has damaged, and the original handle of a knife of reuse, this kind of connected mode can solve the problem, but mount pad 2 and handle of a knife 3 are hard material, hardness is fairly high, it is difficult to turn out the screw thread on it, the operation degree of difficulty is too big, and the popularization and use are not carried out. Therefore, a three-blade tooth-breaking cutter for wood drilling, which has a compact structure, saves the wood board processing cost and improves the drilling efficiency, is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a timber drilling of compact structure, save plank processing cost, improvement drilling efficiency is with three sword disconnected tooth cutters.

The purpose of the utility model is realized through the following technical scheme: a three-edge tooth breaking cutter for drilling wood comprises a cutter edge section, a mounting seat and a cutter handle, wherein the cutter edge section is welded at the top of the mounting seat, a straight channel axially arranged along the cutter edge section is formed in a cutter body of the cutter edge section, one end of the straight channel penetrates through the top surface of the cutter body, the other end of the straight channel penetrates through the bottom surface of the mounting seat, a base is welded at the bottom of the mounting seat, mutually communicated square grooves, conical holes and through holes are sequentially formed in the base from bottom to top, the through holes are communicated with a lower port of the straight channel, and external threads are formed in the cylindrical surface of the base; the top of handle of a knife has welded the spacing dish of coaxial setting in order, square head and cone, the cone cooperatees with the bell mouth, square head and square groove cooperation, the L shape passageway has been seted up in the handle of a knife, the perpendicular passageway of L shape passageway runs through the top surface setting of cone, the horizontal passageway of L shape passageway runs through the cylinder setting of handle of a knife, this cutter still includes the lock sleeve, the top of lock sleeve is provided with the opening, the bottom of lock sleeve is sealed, logical groove is seted up to the bottom of lock sleeve, the internal thread has been seted up on the inner wall of lock sleeve, the lock sleeve is located on the handle of a knife through the lower cover up of groove, the internal thread of lock sleeve and the external screw thread threaded connection of base, under threaded connection power, the lock sleeve basal surface supports to press on the basal surface of spacing dish.

The blade section, the mounting seat and the tool handle are coaxially arranged.

The cross section of the square groove is square.

And the horizontal channel of the L-shaped channel is arranged below the limiting disc.

The limiting disc is a circular disc.

The through hole, the taper hole and the square groove are coaxially arranged.

The utility model has the advantages of it is following: the utility model discloses compact structure, save plank processing cost, improve drilling efficiency.

Drawings

FIG. 1 is a schematic structural diagram of a conventional three-blade tooth-breaking tool;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic structural view of a base;

FIG. 5 is a schematic view of the connection between the tool shank and the square head of the present invention;

FIG. 6 is a front view of FIG. 5;

FIG. 7 is a top view of FIG. 6;

fig. 8 is a schematic structural view of the locking sleeve.

Detailed Description

The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:

as shown in fig. 2 to 8, a three-blade tooth-breaking tool for wood drilling comprises a blade section 1, a mounting seat 2 and a tool shank 3, wherein the blade section 1 is welded at the top of the mounting seat 2, a straight channel 7 is axially arranged in the tool body of the blade section 1, one end of the straight channel 7 penetrates through the top surface of the tool body, the other end of the straight channel penetrates through the bottom surface of the mounting seat 2, a base 8 is welded at the bottom of the mounting seat 2, a square groove 9, a conical hole 10 and a through hole 11 which are mutually communicated are sequentially arranged in the base 8 from bottom to top, the cross section of the square groove 9 is square, the through hole 11 is communicated with the lower port of the straight channel 7, and an external thread 12 is arranged on the cylindrical surface of the base 8; the top of handle of a knife 3 has welded spacing dish 13, square head 14 and the cone 15 of coaxial setting in order, spacing dish 13 is the disc, cone 15 cooperatees with bell mouth 10, square head 14 and square groove 9 cooperation, L shape passageway 16 has been seted up in the handle of a knife 3, the perpendicular passageway of L shape passageway 16 runs through the top surface setting of cone 15, the horizontal passageway of L shape passageway 16 runs through the cylinder setting of handle of a knife 3, this cutter still includes lock sleeve 17, the top of lock sleeve 17 is provided with the opening, the bottom of lock sleeve 17 is sealed, logical groove 18 has been seted up to the bottom of lock sleeve 17, internal thread 19 has been seted up on the inner wall of lock sleeve 17, lock sleeve 17 is located handle of a knife 3 through logical groove 18 from bottom to top, the internal thread 19 of lock sleeve 17 and the external screw thread 12 threaded connection of base 8, under the threaded connection power, the bottom surface of lock sleeve 17 supports and presses on the basal surface of spacing dish 13.

The blade section 1, the mounting seat 2 and the tool handle 3 are coaxially arranged; the through hole 11, the taper hole 10 and the square groove 9 are coaxially arranged. The horizontal channel of the L-shaped channel 16 is arranged below the limiting disc 13.

The working process of the utility model is as follows:

before drilling holes in the wood board, fixing a wood board tool on a platform, clamping and fixing the tail end of a tool handle 3 by adopting a power tool, and keeping a blade section 1 in an inverted state; then, a worker injects a certain amount of cooling liquid into the horizontal channel of the L-shaped channel 16, and the cooling liquid finally drops out from the tail end port of the straight channel 7 through the vertical channel of the L-shaped channel 16, the tapered hole 10, the through hole 11 and the straight channel 7 in sequence; the workman opens power tool afterwards, power tool drives handle of a knife 3 and rotates, handle of a knife 3 drives cutting edge 5 rotatoryly, the cutting edge is at rotatory in-process drilling timber in order to form required hole, at drilling process, coolant liquid reachs cutting edge 5 department all the time, cool down cutting edge 5 through the coolant liquid, reach the purpose of cooling, and then effectively avoided cutting edge 5 because of the high sintering of temperature, consequently compare the disconnected tooth cutter of traditional three swords, after a section degree of depth of drilling, need not frequent the brill, very big drilling time has been shortened, and then very big improvement drilling efficiency. In addition, after three swords of broken teeth cutter use one section processing cycle, fatigue damage appears in cutting edge section 1, the workman only needs upwards to screw out earlier lock sleeve 17 from base 8 this moment, then move base 8 downwards, square groove 9 of base 8 is along the 14 axial downward roll-offs of square head, install new cutting edge section on handle of a knife 3 at last, thereby realize the original handle of a knife 3 of used repeatedly, consequently, three swords of broken teeth cutter of this three swords of broken teeth cutter compares the three swords of traditional whole welding formula and breaks the teeth cutter, need not to throw away original handle of a knife 3 after the cutter damages, the cost of processing the plank has greatly been saved.

In addition, square groove 9 and square head 14 have realized circumference fixedly, and lock sleeve 17 and base 8 have formed axial fixity, make the more firm locking of cutting edge section 1 on handle of a knife 3, have firm in connection, connect stable characteristics.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (6)

1. The utility model provides a timber drilling is with three sword disconnected tooth cutters, it includes sword section (1), mount pad (2) and handle of a knife (3), sword section (1) welds in the top of mount pad (2), its characterized in that: a straight channel (7) arranged along the axial direction of the cutter body is formed in the cutter body of the cutter edge section (1), one end of the straight channel (7) penetrates through the top surface of the cutter body, the other end of the straight channel penetrates through the bottom surface of the mounting seat (2), a base (8) is welded at the bottom of the mounting seat (2), a square groove (9), a conical hole (10) and a through hole (11) which are communicated with each other are sequentially formed in the base (8) from bottom to top, the through hole (11) is communicated with a lower port of the straight channel (7), and external threads (12) are formed on the cylindrical surface of the base (8); the cutter is characterized in that a coaxially arranged limiting disc (13), a square head (14) and a conical head (15) are welded at the top of the cutter handle (3) in sequence, the conical head (15) is matched with the conical hole (10), the square head (14) is matched with the square groove (9), an L-shaped channel (16) is formed in the cutter handle (3), a vertical channel of the L-shaped channel (16) penetrates through the top surface of the conical head (15) to be arranged, a horizontal channel of the L-shaped channel (16) penetrates through the cylindrical surface of the cutter handle (3), the cutter further comprises a locking sleeve (17), an opening is formed in the top of the locking sleeve (17), the bottom of the locking sleeve (17) is sealed, a through groove (18) is formed in the bottom of the locking sleeve (17), an internal thread (19) is formed in the inner wall of the locking sleeve (17), the cutter handle (17) is sleeved on the cutter handle (3) from bottom to top through the through groove (18), and the internal thread (19) of the locking sleeve (17) is in threaded connection with an external thread (12) of the base (8), under the force of threaded connection, the bottom surface of the locking sleeve (17) is pressed against the bottom surface of the limiting disc (13).

2. A three-edge tooth breaking tool for wood drilling as claimed in claim 1, wherein: the blade section (1), the mounting seat (2) and the knife handle (3) are coaxially arranged.

3. A three-edge tooth breaking tool for wood drilling as claimed in claim 1, wherein: the cross section of the square groove (9) is square.

4. A three-edge tooth breaking tool for wood drilling as claimed in claim 1, wherein: and a horizontal channel of the L-shaped channel (16) is arranged below the limiting disc (13).

5. A three-edge tooth breaking tool for wood drilling as claimed in claim 1, wherein: the limiting disc (13) is a circular disc.

6. A three-edge tooth breaking tool for wood drilling as claimed in claim 1, wherein: the through hole (11), the taper hole (10) and the square groove (9) are coaxially arranged.

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