CN213052889U

CN213052889U - Combined centering drill with chip flying prevention function

Info

Publication number: CN213052889U
Application number: CN202022011533.3U
Authority: CN
Inventors: 周文斌
Original assignee: Changzhou Jingerrui Tool Manufacturing Co ltd
Current assignee: Changzhou Jingerrui Tool Manufacturing Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-04-27
Anticipated expiration: 2030-09-15

Abstract

The utility model discloses a combination formula centering drill with prevent flying chip function, include knife tip, drill edge, cutting edge, sword groove, blade, prevent flying chip groove, through-hole, blade holder, locating pin seat, locating hole, fixed plate and fixed orifices. The utility model has the advantages that: the knife tip, the drill point, the cutting edge, sword groove and blade are overall structure, the drill point is certain inclination, make this centering drill have certain rigidity, the cutting edge has two, the layer of polishing is established on the cutting edge surface, this centering drill is the twolip structure, make the centering drill have stronger hardness and polish the trompil simultaneously, cutting edge and sword groove are the screw thread form, the sweeps of being convenient for discharge, prevent flying the bits groove and be U type cup, prevent flying the bits groove and be detachable sliding connection through the through-hole on the blade, be convenient for assemble and prevent flying the bits groove, prevent that the sweeps from splashing, the fixed plate symmetry is established two, the fixed plate is opened has the fixed orifices, be convenient for fixed connection blade holder, location pin seat and fixed orifices also make the blade holder connect more stably simultaneously, after the use, also be convenient for dismantle.

Description

Combined centering drill with chip flying prevention function

Technical Field

The utility model relates to a pilot drill specifically is a combination formula pilot drill with prevent flying bits function, belongs to cutting tool technical field.

Background

In the processing of metal parts, different modes of processing are often required to be carried out on original metal materials, in the processing of milling, drilling and the like, a tool which is usually adopted is a numerical control machine tool, when in specific drilling, particularly in the drilling processing on arc surface materials, a guide hole is firstly drilled at the center position of a hole, then the drilling operation is carried out, so as to ensure the precision of the hole position, if the drilling is finished at one time, the drill bit can drill eccentricity and has larger error due to the centrifugal force or inertia force at the moment of contacting with the surface of a product due to the high-speed operation of the drill bit, and the precision of the drilled hole can not meet the requirement; meanwhile, due to the fact that some materials such as aluminum are soft, scraps are prone to being stuck to a cutter or extruded in the drilling process, hole edge burrs are large, the rejection rate is high, the centering drill is used for paying attention to the fact that the top angle of the drill point is equal to or larger than the micro drill top angle of the final drill hole, during drilling, scraps are often generated, if a user is not properly protected, human body weak parts such as eyes can be injured, unnecessary injuries are caused, and therefore corresponding accessories are needed to be adopted to reduce scrap splashing.

The existing pilot drill is simple in structure, one of the existing pilot drill and low in hardness of materials used by the drill bit, when the drill bit drills for a long time, the high-temperature oxidation resistance and the wear resistance of the drill bit are easily reduced, the vertex angle of the pilot drill is small, when the drill bit is subsequently micro-drilled, two cutting edges contact with a workpiece earlier than the vertex, tipping is easily caused, the third is that no chip flying prevention device is arranged between the drill bit and a plate to be drilled, the drill bit drills in a high-speed rotating mode and is frequently accompanied with chip flying, and unnecessary damage to human weak parts such as eyes is easily caused.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a combined centering drill with chip flying prevention function for solving the above problems.

The utility model discloses a following technical scheme realizes above-mentioned purpose: a combined centering drill with a chip flying prevention function comprises a tool tip, a drill blade, a cutting edge, a tool groove, a tool body, a chip flying prevention groove, a through hole, a tool apron, a positioning pin seat, a positioning hole, a fixing plate and a fixing hole; the combined centering drill with the chip flying prevention function is characterized in that the tool tip, the drill blade, the cutting edge, the tool body, the chip flying prevention groove and the tool apron form the combined centering drill with the chip flying prevention function, the tool tip, the drill blade, the tool groove and the tool body are of an integrated structure, the tool tip is arranged at the top end of the centering drill, the drill blade is located at the rear end of the tool tip, the cutting edge is arranged at the outer side of the centering drill, the tool groove is arranged between the adjacent cutting edges, the tool body is located at the rear end of the centering drill, the chip flying prevention groove is sleeved on the tool body, a through hole is formed in the center of the chip flying prevention groove, the tool apron is arranged at the tail end of the centering drill, the positioning pin seat is arranged at the center of the tool apron, the positioning hole is arranged at the center of the side face of the positioning pin seat.

Preferably, in order to enable the pilot drill to have certain rigidity, the tool tip, the drill blade, the cutting edge, the tool slot and the tool body are of an integral structure, the drill blade is of a certain inclination angle, and the tool tip, the drill blade and the cutting edge are made of tungsten carbide rigid alloy materials.

Preferably, in order to let the centering drill have stronger hardness and polish the processing to drilling simultaneously, the cutting edge has two, and the cutting edge surface is equipped with the coarse layer of polishing, and two cutting edges make this centering drill be twolip structure simultaneously.

Preferably, in order to facilitate the removal of the debris generated by the drilling and milling process, the flutes are formed between the cutting edges, and the cutting edges and flutes are threaded.

Preferably, for the convenience of combined installation, the chip groove is prevented from being splashed by the milled scraps during drilling, the chip groove is in a U-shaped cup shape, and the chip groove is detachably connected with the cutter body in a sliding mode through the through hole.

Preferably, in order to facilitate the fixed connection of the tool apron, the two fixing plates are symmetrically arranged, the upper ends of the fixing plates are correspondingly provided with fixing holes, and the fixing holes are higher than the positioning pin bosses.

The utility model has the advantages that: the combined centering drill with the chip flying prevention function has the advantages that the design is reasonable, the tool nose, the drill blade, the cutting edge, the tool groove and the tool body are of an integral structure, the drill blade is of a certain inclination angle, the tool nose, the drill blade and the cutting edge are made of tungsten carbide rigid alloy materials, the centering drill can have certain rigidity, the vertex angle of the centering drill is larger, the top tip contacts with a workpiece earlier than the two cutting edges during drilling, the blade breaking is not easy to cause, the number of the cutting edges is two, a rough polishing layer is arranged on the surface of the cutting edge, the centering drill is of a double-blade structure due to the two cutting edges, the centering drill can have high hardness and polish the drilled hole simultaneously, the hole diameter is smoother, the tool groove is arranged between the cutting edges, the cutting edge and the tool groove are in a threaded shape, waste chips generated in the drilling and milling processes can be discharged, the drilling efficiency is improved, the chip flying prevention groove is in a U-shaped cup shape, and the chip flying prevention groove is, the chip groove and then the sweeps that mill when preventing to drill are prevented to the aggregate erection of being convenient for splashes, reduces and flies the bits and to human damage, and the centralized clearance of also being convenient for simultaneously flies the bits, and the fixed plate symmetry is equipped with two, and the fixed orifices has been seted up in the correspondence of fixed plate upper end, and the fixed orifices is located to be highly higher than the locating pin seat simultaneously, the fixed connection blade holder of being convenient for, and locating pin seat and fixed orifices also make the blade holder connect more stable when drilling work simultaneously, after the use, also convenient to detach changes the drill bit.

Drawings

FIG. 1 is a schematic view of the structure of the centering drill of the present invention;

fig. 2 is a schematic view of the installation structure of the chip groove of the utility model;

fig. 3 is a schematic view of the structure of the chip groove of the present invention;

fig. 4 is a schematic view of the structure of the knife holder of the present invention.

In the figure: 1. the tool comprises a tool tip, 2, a drill blade, 3, a cutting edge, 4, a tool groove, 5, a tool body, 6, a chip flying prevention groove, 7, a through hole, 8, a tool apron, 9, a positioning pin seat, 10, a positioning hole, 11, a fixing plate, 12 and a fixing hole.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, a combined centering drill with chip flying prevention function includes a tool tip 1, a drill blade 2, a blade edge 3, a tool slot 4, a tool body 5, a chip flying prevention groove 6, a through hole 7, a tool base 8, a positioning pin base 9, a positioning hole 10, a fixing plate 11 and a fixing hole 12; the tool nose 1, the drill blade 2, the cutting edge 3, the tool body 5, the chip flying prevention groove 6 and the tool apron 8 form the combined centering drill with the chip flying prevention function, the tool nose 1, the drill blade 2, the cutting edge 3, the tool groove 4 and the tool body 5 are of an integrated structure, the tool nose 1 is arranged at the top end of the centering drill, the drill blade 2 is positioned at the rear end of the tool nose 1, the blade 3 is arranged at the outer side of the centering drill, the tool groove 4 is formed between the adjacent blade 3, the tool body 5 is positioned at the rear end of the centering drill, the chip flying prevention groove 6 is sleeved on the tool body 5, and the center of the chip groove 6 is provided with a through hole 7, the cutter holder 8 is arranged at the tail end of the centering drill, the positioning pin seat 9 is arranged at the center of the tool apron 8, the positioning hole 10 is arranged at the center of the side surface of the positioning pin seat 9, the fixing plate 11 is arranged at the outer edge of the cutter holder 8, and the fixing hole 12 is formed in the upper end of the side face of the fixing plate 11.

The tool nose 1, the drill blade 2, the cutting edge 3, the tool slot 4 and the tool body 5 are of an integral structure, the drill blade 2 is of a certain inclination angle, the tool nose 1, the drill blade 2 and the cutting edge 3 are made of tungsten carbide rigid alloy materials, the centering drill can have certain rigidity, the vertex angle of the centering drill is large, a top tip contacts a workpiece earlier than two cutting edges during drilling, the edge breaking is not easy to cause, the two cutting edges 3 are provided, a rough polishing layer is arranged on the surface of each cutting edge 3, the two cutting edges 3 enable the centering drill to be of a double-edge structure, the centering drill can have high hardness and polish the drilling hole simultaneously, the hole diameter is smoother, the tool slot 4 is arranged between the cutting edges 3, the cutting edges 3 and the tool slot 4 are in a threaded shape, waste chips generated in the drilling and milling process can be conveniently discharged, the drilling efficiency is improved, the chip-flying-preventing slot 6 is in a U-shaped cup shape, and the chip-preventing slot 6 is detachably connected with the tool body 5 in a sliding mode, chip groove 6 and then the sweeps that mill when preventing to drill are prevented in the aggregate erection of being convenient for splash, reduce and fly the bits and to human damage, also be convenient for concentrate the clearance simultaneously and fly the bits, fixed plate 11 symmetry is equipped with two, and the correspondence of fixed plate 11 upper end has seted up fixed orifices 12, and fixed orifices 12 locates highly to be higher than locating pin seat 9 simultaneously, and the fixed connection blade holder 8 of being convenient for, and locating pin seat 9 and fixed orifices 12 also make blade holder 8 connect more stable when drilling the work simultaneously, and after the use, also convenient to detach changes the drill bit.

The working principle is as follows: when the combined centering drill with the chip flying prevention function is used, the tool apron 8 is stably arranged through the positioning pin seat 9 and the positioning hole 10, the centering drill is fixed at the connecting part of a machine tool through the fixing plate 11 and the fixing hole 12 corresponding to the two sides, the chip flying prevention groove 6 is installed on the tool body 5 in a combined mode through the through hole 7 in a sleeved mode, the tool nose 1 is abutted to a drilling position, the chip flying prevention groove 6 is pressed on a plate needing drilling, the machine tool is opened finally to drive the drill to rotate, the drilling is conducted through the drill blade 2 and the blade 3, the pressed chip flying prevention groove 6 can effectively prevent chips from splashing in the process, and after the drilling is completed, the chip flying prevention groove 6 is loosened, and the chips can be cleaned.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a combination formula centering drill with prevent flying chip function which characterized in that: comprises a tool nose (1), a drill blade (2), a blade (3), a tool slot (4), a tool body (5), a chip flying prevention groove (6), a through hole (7), a tool apron (8), a positioning pin seat (9), a positioning hole (10), a fixing plate (11) and a fixing hole (12); the combined centering drill with the chip flying prevention function is characterized in that the tool nose (1), the drill blade (2), the cutting edge (3), the tool body (5), the chip flying prevention groove (6) and the tool apron (8) form the combined centering drill with the chip flying prevention function, the tool nose (1), the drill blade (2), the cutting edge (3), the tool groove (4) and the tool body (5) are of an integrated structure, the tool nose (1) is arranged at the top end of the centering drill, the drill blade (2) is arranged at the rear end of the tool nose (1), the cutting edge (3) is arranged on the outer side of the centering drill, the tool groove (4) is arranged between the adjacent cutting edges (3), the tool body (5) is arranged at the rear end of the centering drill, the chip flying prevention groove (6) is sleeved on the tool body (5), a through hole (7) is formed in the center of the chip flying prevention groove (6), the tool apron (8) is arranged at the tail end of the centering drill, and the positioning pin seat (9) is arranged, the locating hole (10) is arranged at the center of the side face of the locating pin seat (9), the fixing plate (11) is arranged at the edge of the outer face of the tool apron (8), and the fixing hole (12) is arranged at the upper end of the side face of the fixing plate (11).

2. The combined centering drill with the chip flying prevention function according to claim 1, wherein: the tool point (1), the drill blade (2), the cutting edge (3), the cutter groove (4) and the tool body (5) are of an integral structure, the drill blade (2) is at a certain inclination angle, and the tool point (1), the drill blade (2) and the cutting edge (3) are made of tungsten carbide rigid alloy materials.

3. The combined centering drill with the chip flying prevention function according to claim 1, wherein: the centering drill is characterized in that the number of the cutting edges (3) is two, the surface of each cutting edge (3) is provided with a rough polishing layer, and the two cutting edges (3) enable the centering drill to be of a double-edge structure.

4. The combined centering drill with the chip flying prevention function according to claim 1, wherein: the knife grooves (4) are formed between the knife edges (3), and the knife edges (3) and the knife grooves (4) are in a thread shape.

5. The combined centering drill with the chip flying prevention function according to claim 1, wherein: the chip groove (6) is in a U-shaped cup shape, and the chip groove (6) is detachably connected with the knife body (5) in a sliding manner through the through hole (7).

6. The combined centering drill with the chip flying prevention function according to claim 1, wherein: two fixing plates (11) are symmetrically arranged, fixing holes (12) are correspondingly formed in the upper ends of the fixing plates (11), and the fixing holes (12) are higher than the positioning pin bases (9).