CN208543645U

CN208543645U - A kind of multistage multiple groove drill bit

Info

Publication number: CN208543645U
Application number: CN201721860430.6U
Authority: CN
Inventors: 陈乐�
Original assignee: Zhenjiang Hatu Tool Co Ltd
Current assignee: Zhenjiang Hatu Tool Co Ltd
Priority date: 2017-12-27
Filing date: 2017-12-27
Publication date: 2019-02-26
Anticipated expiration: 2027-12-27

Abstract

The utility model provides a kind of multistage multiple groove drill bit, and the utility model includes drill body, drillstock, and the utility model structure is simple, and dust discharge is high-efficient；By the back bevel in chip space, multiple steps are set, and rounded corner design is done to step corner angle, guarantee in drilling dust discharge process to the multiple spiral crushing of the carry out such as stone, to become dust-like, is faster easier to be discharged, it avoids blocking, reduce drilling resistance, improve trepanning velocity, reduces working strength, reduce body of rod abrasion, lengthening drill bit service life.

Description

A kind of multistage multiple groove drill bit

Technical field

The utility model relates to boring bar tool technical fields, and in particular to a kind of multistage multiple groove drill bit.

Background technique

Electric hammer is a kind of electrodynamic type rotation hammer drill with overload-release clutch with Pneumatic hammering mechanism, and electric hammer is in electric drill On the basis of, it increases one and drives the piston for having crankshaft-link rod by motor, the reciprocating air in a cylinder makes gas Air pressure is in mechanical periodicity in cylinder, and the air pressure of variation drives the hammer in cylinder back and forth to hit the top of drill bit, seems We use hammer percussive drill bit, therefore named electric hammer.Electric hammer, which does not need hand, makes great strength, so that it may in concrete, brick, stone etc. Aperture on hard material, electric hammer aperture ultrahigh in efficiency.Drill bit will carry out high speed rotation during drilling, can generate a large amount of The dust discharge chip removal efficiency of fines and dust, existing drill bit is generally relatively low, main to carry out chip removal row using single slot or double flute design Dirt, dust discharge low efficiency, especially during long length, deep space drilling, obstruction and drilling efficiency are lowly especially apparent.

Utility model content

In order to solve the problems in the existing technology, the utility model provides a kind of multistage multiple groove drill bit, has The high-efficient feature of dust discharge.

The technical solution that the utility model solves the above problems are as follows: a kind of multistage multiple groove drill bit, including drill body, drillstock, Drill body one end and drillstock are connected as a body structure；

Drillstock is equipped with for fixed fastening position；Drill body is equipped with cutter head far from one end of drillstock, and drill bit is equipped with spiral shell Revolve the chip space of shape；Chip space includes front bevel, back bevel, and back bevel is equipped with multiple steps, shape between two neighboring step At groove.

The numbers of steps is 2-4.

The step rib round-corner transition, fillet diameter are not more than 10mm.

The utility model has the utility model has the advantages that the utility model structure is simple, and dust discharge is high-efficient；By after chip space Multiple steps are arranged in inclined-plane, and do rounded corner design to step corner angle, guarantee more to the progress such as stone in drilling dust discharge process Secondary spiral crushes, to become dust-like, is faster easier to be discharged, avoids blocking, reduce drilling resistance, improves punching speed Degree reduces working strength, reduces body of rod abrasion, lengthening drill bit service life.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model (1).

Fig. 2 is the utility model structure diagram (2).

Fig. 3 is one structural schematic diagram of embodiment.

Fig. 4 is two structural schematic diagram of embodiment.

Fig. 5 is three structural schematic diagram of embodiment.

In figure: 1- drill body, 2- drillstock, 3- fastening position, 4- cutter head, 5- chip space, 6- front bevel, 7- back bevel, 8- platform Rank, 9- groove.

Specific embodiment

With reference to the accompanying drawing and specific embodiment is further described the utility model.

Embodiment one

A kind of multistage multiple groove drill bit, including drill body 1, drillstock 2,1 one end of drill body and drillstock 2 are connected as a body structure；It bores Handle 2 is equipped with for fixed fastening position 3；Drill body 1 is equipped with cutter head 4 far from one end of drillstock 2, and drill bit is equipped with spiral helicine Chip space 5；Chip space 5 includes front bevel 6, back bevel 7, and back bevel 7 is equipped with 2 steps 8, shape between two neighboring step 8 At groove 9,8 rib round-corner transition of step, fillet diameter is not more than 10mm.

Embodiment two

A kind of multistage multiple groove drill bit, including drill body 1, drillstock 2,1 one end of drill body and drillstock 2 are connected as a body structure；It bores Handle 2 is equipped with for fixed fastening position 3；Drill body 1 is equipped with cutter head 4 far from one end of drillstock 2, and drill bit is equipped with spiral helicine Chip space 5；Chip space 5 includes front bevel 6, back bevel 7, and back bevel 7 is equipped with 3 steps 8, shape between two neighboring step 8 At groove 9,8 rib round-corner transition of step, fillet diameter is not more than 10mm.

Embodiment three

A kind of multistage multiple groove drill bit, including drill body 1, drillstock 2,1 one end of drill body and drillstock 2 are connected as a body structure；It bores Handle 2 is equipped with for fixed fastening position 3；Drill body 1 is equipped with cutter head 4 far from one end of drillstock 2, and drill bit is equipped with spiral helicine Chip space 5；Chip space 5 includes front bevel 6, back bevel 7, and back bevel 7 is equipped with 4 steps 8, shape between two neighboring step 8 At groove 9,8 rib round-corner transition of step, fillet diameter is not more than 10mm.

Multiple steps 8 are arranged by the back bevel 7 in chip space 5 in the utility model, and do rounded corner to 8 corner angle of step and set Meter guarantees faster to be easier the multiple spiral crushing of the carry out such as stone to become dust-like in drilling dust discharge process Discharge, avoids blocking, and reduces drilling resistance, improves trepanning velocity, reduces working strength, reduces body of rod abrasion, lengthening drill bit longevity Life.

Many other changes and modifications may be made without departing from the spirit and scope of the utility model.It should be appreciated that this reality It is not limited to specific embodiment with novel, the scope of the utility model is defined by the following claims.

Claims

1. a kind of multistage multiple groove drill bit, which is characterized in that including drill body, drillstock, drill body one end and drillstock are connected as a body knot Structure；Drillstock is equipped with for fixed fastening position；Drill body is equipped with cutter head far from one end of drillstock, and drill bit is equipped with spiral helicine Chip space；Chip space includes front bevel, back bevel, and back bevel is equipped with multiple steps, forms groove between two neighboring step； The numbers of steps is 2-4；The step rib round-corner transition, fillet diameter are not more than 10mm.