CN210996684U

CN210996684U - Drill bit with replaceable cutting tool bit

Info

Publication number: CN210996684U
Application number: CN201921955424.8U
Authority: CN
Inventors: 吴亚芹; 袁菊春; 王强
Original assignee: Yangzhou Baixing Tools Co ltd
Current assignee: Yangzhou Baixing Tools Co ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-07-14
Anticipated expiration: 2029-11-13

Abstract

The utility model relates to a drill bit technical field just discloses a drill bit of removable cutting tool bit, which comprises a drill bit, the outer edge of drill bit is equipped with work screw thread limit, seted up between the work screw thread limit and told the groove, parallel fixed orifices has been seted up in the front of drill bit bottom, the inside fixed mounting of parallel fixed orifices has the round pin axle, the inside fixed mounting of round pin axle has the cutting tool bit, the cutting tool bit is through the bottom movable mounting of round pin axle with the drill bit. This drill bit of removable cutting tool bit, through the mode that cutting tool bit top square connecting block and drill bit bottom are connected, can guarantee that this square connecting block is connected with the drill bit, just so can guarantee enough large tracts of land cutting tool bit and drill bit and be connected, guarantee the stability of the during operation of this drill bit, and traditional connected mode directly falls with the bottom of special-shaped cutting tool bit joint at the drill bit, this cutting tool bit is unstable like this at drill bit work pivoted in-process, thereby lead to the quality of drilling not high.

Description

Drill bit with replaceable cutting tool bit

Technical Field

The utility model relates to a drill bit technical field specifically is a drill bit of removable cutting tool bit.

Background

During drilling, the drill bit is the primary tool for breaking rock and the borehole is formed by the drill bit breaking rock. The length of time a wellbore can take to form is related to the degree of mutual matching between the drill bit and the formation, in addition to the characteristics of the rock of the formation being drilled and the properties of the drill bit itself.

Current drill bit is all integral, such benefit lies in that whole rigidity is good, be difficult to produce the fracture, but the drill bit can form very serious wearing and tearing after using a period of time, just need polish again, the extravagant time very of this process, normal processing period has also been influenced, slow down the construction progress, the drill bit of current concatenation formula usually will cut the sword and fix the bottom at the drill bit through a round pin axle in addition, though can play the connection effect like this, but more troublesome when dismantling, because the round pin axle has stretched into inside the drill bit, it is more difficult to extract.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a drill bit of removable cutting tool bit possesses square connecting block and reduces spaciousness assurance drilling quality, novel round pin axle and guarantees that the installation dismantlement advantage more convenient, and the drill bit of having solved current concatenation formula is usually with the cutting sword through a round pin axle fastening in the bottom of drill bit, though can play the connection effect like this, but more troublesome when dismantling because the round pin axle has stretched into inside the drill bit, extracts the problem of more difficulty.

The utility model provides a following technical scheme: the utility model provides a drill bit of removable cutting tool bit, includes the drill bit, the outer edge of drill bit is equipped with work thread limit, seted up between the work thread limit and told the groove, parallel fixed orifices has been seted up in the front of drill bit bottom, the inside fixed mounting of parallel fixed orifices has the round pin axle, the inside fixed mounting of round pin axle has the cutting tool bit, the cutting tool bit is through the bottom movable mounting of round pin axle with the drill bit, the top of cutting tool bit is equipped with square fixed block, the tool bit fixed orifices has been seted up in the front of square fixed block, the positive fixed mounting of round pin axle has the side cut of taking.

Preferably, the number of the parallel fixing holes is two, and the two parallel fixing holes are arranged in parallel along the radian of the working thread edge.

Preferably, the number of the pin shafts is two, and the length of the two pin shafts is consistent with the diameter of the drill bit.

Preferably, the square fixing block is square, and a square clamping groove is formed in the fixing position of the top of the square fixing block and the drill bit.

Preferably, the number of the tool bit fixing holes is two, and the positions of the two tool bit fixing holes are matched with the positions of the parallel fixing holes.

Preferably, vertical friction ribs are arranged on two sides of the taking-out trimming edge.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. this drill bit of removable cutting tool bit, through the mode that cutting tool bit top square connecting block and drill bit bottom are connected, can guarantee that this square connecting block is connected with the drill bit, just so can guarantee enough large tracts of land cutting tool bit and drill bit and be connected, guarantee the stability of the during operation of this drill bit, and traditional connected mode directly falls with the bottom of special-shaped cutting tool bit joint at the drill bit, this cutting tool bit is unstable like this at drill bit work pivoted in-process, thereby lead to the quality of drilling not high.

2. This drill bit of removable cutting tool bit, through setting up two neotype round pin axles, the one end of this round pin axle is provided with the side cut that facilitates the use instrument and extract, and such round pin axle is more convenient when installation and dismantlement, and the staff only need just can extract the round pin axle through this side cut, and traditional round pin axle does not set up such structure, and the in-process that extracts at the round pin axle can seem particularly troublesome like this, and two round pin axle parallel arrangement in addition guarantee the stable connection of this cutting tool bit and drill bit.

Drawings

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

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

FIG. 3 is a top view of the cutting head structure of the present invention;

fig. 4 is a perspective view of the pin structure of the present invention.

In the figure: 1. a drill bit; 2. a working thread edge; 3. a material-spitting groove; 4. parallel fixing holes; 5. a pin shaft; 6. a cutting bit; 7. a square fixed block; 8. a cutter head fixing hole; 9. and taking out and cutting edges.

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. 1-4, a drill bit with a replaceable cutting bit comprises a drill bit 1, working thread edges 2 are arranged on the outer edges of the drill bit 1, a material discharging groove 3 is arranged between the working thread edges 2, parallel fixing holes 4 are arranged on the front surface of the bottom end of the drill bit 1, the number of the parallel fixing holes 4 is two, the two parallel fixing holes 4 are arranged in parallel along the radian of the working thread edges 2, the cutting bit 6 can be fixed through two pin shafts 5 by arranging the two parallel fixing holes 4 in two, so as to ensure the stable installation of the cutting bit 6, the other two parallel fixing holes 4 are arranged in parallel along the radian of the working thread edges 2, so as to ensure that the cutting bit 6 is more stable when being fixed, and the traditional method is fixed through one pin shaft 5, so that the connection stability of the cutting bit 6 cannot be well ensured, the pin shafts 5 are fixedly arranged inside the parallel fixing holes 4, the number of the pin shafts 5 is two, the length of the two pin shafts 5 is consistent with the diameter length of the drill bit 1, the pin shafts 5 can be movably connected with the cutting tool bit 6 through the parallel fixing holes 4 through the arrangement of the two pin shafts 5, the flexibility is ensured, the length of the other two pin shafts 5 is consistent with the diameter length of the drill bit 1, the two pin shafts 5 and the drill bit 1 can be ensured to form a whole, the working stability of the drill bit 1 is ensured, the cutting tool bit 6 is fixedly arranged inside the pin shafts 5, the cutting tool bit 6 is movably arranged at the bottom end of the drill bit 1 through the pin shafts 5, the top of the cutting tool bit 6 is provided with a square fixing block 7, the square fixing block 7 is square, and a square clamping groove is arranged at the fixing position of the top of the square fixing block, the square fixing block 7 is arranged in a square shape, so that the square fixing block 7 can be ensured to have small amount of looseness when the drill bit 1 is in butt joint, the connection stability of the drill bit 1 and the square fixing block 7 is higher, and the shaking is avoided, so that better drilling quality can be ensured, in addition, the square clamping groove is arranged at the fixing position of the top of the square fixing block 7 and the drill bit 1, so that the smooth butt joint of the square fixing block 7 and the drill bit 1 can be ensured, the tool bit fixing holes 8 are formed in the front of the square fixing block 7, the number of the tool bit fixing holes 8 is two, the positions of the two tool bit fixing holes 8 are matched with the positions of the parallel fixing holes 4, the fixing effect of the cutting tool bit 6 can be ensured by arranging the tool bit fixing holes 8 in two, and the positions of the two tool bit fixing holes 8 are matched with the positions of the parallel fixing holes, can guarantee butt joint that the tool bit fixed orifices 8 at 6 tops of this cutting tool bit and parallel fixed orifices 4 can be smooth, thereby guarantee connection structure's swing joint's effect through the connection of round pin axle 5, the positive fixed mounting of round pin axle 5 has and takes out side cut 9, the both sides of taking out side cut 9 all are provided with vertical friction muscle, both sides through taking out side cut 9 all are provided with the setting of vertical friction muscle, can make the both sides that should take out side cut 9 can increase frictional force through the friction muscle, thereby can guarantee taking out smoothly of this round pin axle 5, and is convenient and fast.

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. A cutting-head-replaceable drill bit, comprising a drill bit (1), characterized in that: the outer edge of drill bit (1) is equipped with work screw thread limit (2), it tells silo (3) to have seted up between work screw thread limit (2), parallel fixed orifices (4) have been seted up in the front of drill bit (1) bottom, the inside fixed mounting of parallel fixed orifices (4) has round pin axle (5), the inside fixed mounting of round pin axle (5) has cutting tool bit (6), cutting tool bit (6) are through the bottom movable mounting of round pin axle (5) with drill bit (1), the top of cutting tool bit (6) is equipped with square fixed block (7), tool bit fixed orifices (8) have been seted up in the front of square fixed block (7), the positive fixed mounting of round pin axle (5) has to take out side cut (9).

2. A replaceable cutter bit according to claim 1 wherein: the number of the parallel fixing holes (4) is two, and the two parallel fixing holes (4) are arranged in parallel along the radian of the working thread edge (2).

3. A replaceable cutter bit according to claim 1 wherein: the number of the pin shafts (5) is two, and the length of the two pin shafts (5) is consistent with the diameter of the drill bit (1).

4. A replaceable cutter bit according to claim 1 wherein: the square fixing block (7) is square, and a square clamping groove is formed in the fixing position of the top of the square fixing block (7) and the drill bit (1).

5. A replaceable cutter bit according to claim 1 wherein: the number of the tool bit fixing holes (8) is two, and the positions of the two tool bit fixing holes (8) are matched with the positions of the parallel fixing holes (4).

6. A replaceable cutter bit according to claim 1 wherein: and vertical friction ribs are arranged on two sides of the taking-out trimming edge (9).