CN213002844U

CN213002844U - Bottom circular arc fixed point forming drill bit

Info

Publication number: CN213002844U
Application number: CN202022091942.9U
Authority: CN
Inventors: 储金川; 徐培
Original assignee: Dongguan Tongjin Cutter Technology Co ltd
Current assignee: Dongguan Tongjin Cutter Technology Co ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-04-20
Anticipated expiration: 2030-09-22

Abstract

The utility model discloses a bottom circular arc fixed point shaping drill bit, including handle of a knife and an installation section of thick bamboo, the connecting hole has been seted up to the left end of handle of a knife, and the right side of handle of a knife is connected with the connecting block, an installation section of thick bamboo is located the right side of connecting block, and installs a section of thick bamboo inboard and seted up the mounting hole, the inboard of mounting hole has from left to right set gradually spring and collet chuck, and the right-hand member of collet chuck is provided with the latch segment, the inboard of collet chuck is provided with the drilling rod, and the right side of drilling rod is fixed with the drill bit body, the drill bit body includes chip pocket, all sword and sword groove, and all sword. This bottom circular arc fixed point shaping drill bit compares with current ordinary drill bit, and the tip drill point plays the effect of centering when to the product, avoids eccentric not round phenomenon, and the chip removal is light smooth and easy for product lateral wall itself levels smoothly, and the spring absorbs certain load, carries out the damping, has prolonged drill bit life.

Description

Bottom circular arc fixed point forming drill bit

Technical Field

The utility model relates to an industrial processing application technology field specifically is a bottom circular arc fixed point shaping drill bit.

Background

The forming drill bit is used for drilling and milling holes, the required surface smoothness is high, and the requirement that a hole opening has no burrs is met, the conventional cutter used for conventionally processing the type of products is a common drill bit with a central drill point and a side wall provided with a cutting edge, the drill point is used for drilling through the products, a harder hemming burr is formed at a cutter outlet of the hole at the moment of drilling through, a cutting edge is formed at the side edge, the side wall of the hole is milled, the burr formed at the cutter outlet is overturned into the hole due to the influence of a chip removal mode, and the roughness is increased due to the fact that the burr is scraped out of the hole, so that the traditional mode can process the drill bit, but the defect of poor appearance exists.

General drill bit, the burr that goes out the formation of tool bit department can be because of the influence of chip removal mode is poured into downthehole, scrapes out the knife line in the hole and leads to the roughness grow, can not be fine satisfies people's user demand, to above-mentioned condition, carries out technical innovation on current drill bit basis.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bottom circular arc fixed point shaping drill bit to provide general drill bit among the above-mentioned background of solution, the burr that goes out the formation of tool bit department can be because of the influence of chip removal mode overturned into downthehole, scrapes out the knife line in the hole and leads to the roughness grow, can not be fine satisfies people's user demand problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a bottom circular arc fixed point shaping drill bit, includes handle of a knife and an installation section of thick bamboo, the connecting hole has been seted up to the left end of handle of a knife, and the right side of handle of a knife is connected with the connecting block, an installation section of thick bamboo is located the right side of connecting block, and the installation section of thick bamboo inboard has seted up the mounting hole, the inboard of mounting hole has from left to right set gradually spring and collet chuck, and the right-hand member of collet chuck is provided with the latch segment, the inboard of collet chuck is provided with the drilling rod, and the right side of drilling rod is fixed with the drill bit body, the drill bit body includes chip pocket, all sword and sword.

Preferably, the handle of a knife passes through to constitute connection structure between connecting block and the installation section of thick bamboo, and the central line of handle of a knife and the central line of connecting hole coincide mutually.

Preferably, the collet is elastically connected with the mounting tube through a spring, and the outer surface of the collet is attached to the inner surface of the mounting hole.

Preferably, the locking block is in threaded connection with the mounting cylinder, and the inner surface of the locking block is attached to the right surface of the collet.

Preferably, the drill rod is connected with the collet chuck in a clamping manner, and the center line of the drill rod is overlapped with the center line of the collet chuck.

Preferably, the peripheral edges and the cutter grooves are of an integrated structure, and the cutter grooves are circumferentially arranged by taking the central axis of the drill body as a circle center.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a setting of installation section of thick bamboo, spring, mounting hole, collet chuck, latch segment, drilling rod and drill bit body, conveniently carry out the damping to drilling rod and drill bit body, the collet chuck passes through the spring and constitutes elastic connection with the installation section of thick bamboo, be threaded connection between latch segment and the installation section of thick bamboo, when the drill bit body bears great impact load, the load can be through the drilling rod transmission, compression spring, certain load is absorbed to the spring, the load that the spring absorbed also can slowly release after the maximum load disappears, thereby make the drill bit body have the damping function in the use, the tooth breakage phenomenon of drill bit body has been reduced, life has been prolonged;

2. the utility model discloses a chip pocket, the setting in all sword and sword groove, all sword and the clockwise arrangement in proper order of chip pocket, be integrated structure between all sword and the sword groove, make the head of drill bit body wholly present two concave structures in three points, drill bit body center is the tip drill point, this position contacts the product at first, play the effect of centering when guaranteeing drill bit body contact product, be difficult for the shake, thereby avoid eccentric out-of-round phenomenon, the special circular arc structure-the sword groove of indent is made with the profile mode on both sides, this position can be guaranteed to disperse the resistance when the cutting, draw in the burr that drills out toward the chip pocket, and arrange away smoothly, thereby make product lateral wall itself level and smooth.

Drawings

FIG. 1 is a schematic view of a front view half-section structure of the present invention;

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

fig. 3 is the structure diagram of the drill bit body end face viewed from the right side of the utility model.

In the figure: 1. a knife handle; 2. connecting holes; 3. connecting blocks; 4. mounting the cylinder; 5. a spring; 6. mounting holes; 7. a collet; 8. a locking block; 9. a drill stem; 10. a drill bit body; 11. a chip pocket; 12. a peripheral edge; 13. a knife groove.

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. 1-3, the present invention provides a technical solution: the utility model provides a bottom circular arc fixed point shaping drill bit, including handle of a knife 1 and installation section of thick bamboo 4, connecting hole 2 has been seted up to the left end of handle of a knife 1, and the right side of handle of a knife 1 is connected with connecting block 3, handle of a knife 1 constitutes connection structure through between connecting block 3 and the installation section of thick bamboo 4, and the central line of handle of a knife 1 coincides with the central line of connecting hole 2, installation section of thick bamboo 4 is located the right side of connecting block 3, and installation section of thick bamboo 4 inboard has seted up mounting hole 6, the inboard of mounting hole 6 has set gradually spring 5 and collet chuck 7 from left to right, and the right-hand member of collet chuck 7 is provided with latch segment 8, collet chuck 7 constitutes elastic connection through spring 5 and installation section of thick bamboo 4, be threaded connection between latch segment 8 and the installation section of thick bamboo 4, and the internal surface of latch segment 8 is laminated with the right surface of, The collet 7, the locking block 8, the drill rod 9 and the drill bit body 10 are arranged, vibration of the drill rod 9 and the drill bit body 10 is conveniently reduced, the collet 7 is elastically connected with the mounting cylinder 4 through the spring 5, the locking block 8 is in threaded connection with the mounting cylinder 4, when the drill bit body 10 bears a large impact load, the load is transmitted through the drill rod 9, the spring 5 is compressed, the spring 5 absorbs a certain load, and the load absorbed by the spring 5 is slowly released after the maximum load disappears, so that the drill bit body 10 has a vibration reduction function in the use process, the tooth breakage phenomenon of the drill bit body 10 is reduced, and the service life is prolonged;

the drill bit body 10 comprises a chip groove 11, a peripheral edge 12 and a chip groove 13, the peripheral edge 12 and the chip groove 11 are sequentially arranged clockwise, the right end of the peripheral edge 12 is provided with a chip groove 13, the peripheral edge 12 and the chip groove 13 are of an integrated structure, the chip grooves 13 are circumferentially arranged by taking the central axis of the drill bit body 10 as the center of a circle, the peripheral edge 12 and the chip groove 11 are sequentially arranged clockwise, the peripheral edge 12 and the chip groove 13 are of an integrated structure, the head of the drill bit body 10 integrally presents a three-pointed two-concave structure, the center of the drill bit body 10 is a pointed drill point, the part is firstly contacted with a product, and the drill bit body 10 can be ensured to play a centering role when contacting the product, the two sides of the cutter groove 13 are made into an inwards concave special arc structure in a profile mode, the part can ensure that resistance is dispersed during cutting, drilled burrs are collected into the chip groove 11 and smoothly discharged, and therefore the side wall of a product is flat and smooth.

The working principle is as follows: when the bottom arc fixed-point forming drill bit is used, firstly, the cutter handle 1 is installed together with a processing device through a connecting hole 2, then, the mounting cylinder 4 is connected with the cutter handle 1 through a connecting block 3, a spring 5 and a collet 7 are sequentially placed into a mounting hole 6 of the mounting cylinder 4, a drill rod 9 is inserted into the collet 7, a locking block 8 is rotated to enable the locking block 8 to push the collet 7 to move leftwards, the mounting hole 6 is of a conical structure, the collet 7 clamps the drill rod 9, the drill bit is pushed to move downwards through the processing device, a pointed drill point at the center of a drill bit body 10 is in first contact with a processed product, a centering effect can be achieved when a cutter is in contact with the product, the cutter is not easy to shake, the eccentric and non-circular phenomenon is avoided, resistance is guaranteed to be dispersed during cutting through a concave special arc structure of a cutter groove 13, drilled burrs are collected into a chip accommodating groove 11 and smoothly, make product lateral wall itself level and smooth, when drill bit body 10 bore great impact load, the load can transmit collet chuck 7 through drilling rod 9, collet chuck 7 can compress spring 5, and spring 5 absorbs certain load, and the load that spring 5 absorbed also can slowly release after the maximum load disappears to make drill bit body 10 have the damping function in the use, reduced the tooth phenomenon that bursts out of drill bit body 10, prolonged life, this is exactly the theory of operation of this bottom circular arc fixed point shaping drill bit.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a bottom circular arc fixed point shaping drill bit, includes handle of a knife (1) and installation section of thick bamboo (4), its characterized in that: connecting hole (2) have been seted up to the left end of handle of a knife (1), and the right side of handle of a knife (1) is connected with connecting block (3), installation section of thick bamboo (4) are located the right side of connecting block (3), and installation section of thick bamboo (4) inboard has seted up mounting hole (6), the inboard of mounting hole (6) has from left to right set gradually spring (5) and collet chuck (7), and the right-hand member of collet chuck (7) is provided with latch segment (8), the inboard of collet chuck (7) is provided with drilling rod (9), and the right side of drilling rod (9) is fixed with drill bit body (10), drill bit body (10) are including chip pocket (11), all sword (12) and sword groove (13), and all sword (12) and chip pocket (11) are clockwise to be arranged in proper order, the right-hand member of all sword (12.

2. The bottom radius point shaping drill according to claim 1, wherein: the tool handle (1) is connected with the mounting cylinder (4) through the connecting block (3) to form a connecting structure, and the center line of the tool handle (1) is overlapped with the center line of the connecting hole (2).

3. The bottom radius point shaping drill according to claim 1, wherein: the collet (7) is elastically connected with the mounting tube (4) through the spring (5), and the outer surface of the collet (7) is attached to the inner surface of the mounting hole (6).

4. The bottom radius point shaping drill according to claim 1, wherein: the locking block (8) is in threaded connection with the mounting cylinder (4), and the inner surface of the locking block (8) is attached to the right surface of the collet (7).

5. The bottom radius point shaping drill according to claim 1, wherein: the drill rod (9) is connected with the collet chuck (7) in a clamping manner, and the center line of the drill rod (9) is overlapped with the center line of the collet chuck (7).

6. The bottom radius point shaping drill according to claim 1, wherein: the peripheral edge (12) and the cutter grooves (13) are of an integrated structure, and the cutter grooves (13) are arranged circumferentially by taking the central axis of the drill bit body (10) as the center of a circle.