CN201768942U

CN201768942U - Drill

Info

Publication number: CN201768942U
Application number: CN2010202146679U
Authority: CN
Inventors: 梁胡本
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-09-11
Filing date: 2010-05-26
Publication date: 2011-03-23
Anticipated expiration: 2020-05-26

Abstract

The utility model discloses a drill. The drill comprises a tool bar and a tool bit, wherein the tool bit is provided with a slice; at least one chip groove is formed on the tool bar; at least one tool bit is arranged on a round table of the tool bar; and at least two slices are horizontally and longitudinally arranged on the tool bit in a staggered way. The dill provided by the utility model has the advantages that: the working principle of cutting twice is formed, over-large whole cutting stress is avoided, and the dill is beat away, so that a secondary cutting drill is prevented from being repeatedly worn; and the pressure is increased and the working efficiency is improved.

Description

A kind of drill bit

Technical field

The utility model relates to mechanical design field, specifically a kind ofly is used to hole or the drill bit of reaming.

Background technology

Drill bit is to go out through hole or blind hole in order to drilling on solid material, and can be to the cutter of existing hole reaming.It all is the structure on a plane laterally, vertically that inside and outside section is adopted in the drill bit section of prior art, and the drill bit of this kind structure is because the space is narrow and small, and row's powder is not thorough, drill bit bore is easy to stop up in the work, simultaneously, also strengthened the wearing and tearing of drill bit, made shorten the service life of drill bit.

The utility model content

For solving the problem that prior art exists, the utility model provides a kind of drill bit that reduces to wear and tear, increase the cutting dynamics.

The utility model is achieved in that

A kind of drill bit comprises knife bar and cutter head, and section is set on the cutter head, and the chip area of at least one is set on the knife bar;

Knife bar comprises round platform section and cylindrical section, and cutter head distributes along the conical surface of round platform, and described chip area extends to the bottom of knife bar cylindrical section from the conical surface of described knife bar round platform,

On the described knife bar round platform at least one cutter head is set, at least two sections of setting straggly on the cutter head, described at least two section transversion malposition, while vertically shift to install.

The utility model can be done following improvement, and the round platform upper surface of described knife bar also is provided with the section of at least one, on the end face of front of section direction of rotation chip area is set.

Optionally: described knife bar round platform is provided with three cutter heads, and three cutter heads become circular-arc and are distributed on the knife bar round platform.

The utility model can also be done following improvement: the outermost section of described cutter head extends to cylindrical section, and described outermost section has an inclined-plane with respect to cylinder.

The drill bit that the utility model provides has the following advantages:

Drill bit section transversion malposition arrangement architecture forms the operation principle of twice cutting, avoids whole cutting stressed excessive, destroys drill bit; In addition, drill bit section transversion malposition arrangement architecture makes and cuts powder for the first time and discharge the dislocation crack before and after the drill bit section, has protected the secondary cutting drill bit to be subjected to repeated wear;

The drill bit section is the dislocation arrangement architecture vertically, and following section contact area reduces, and pressure increases, and has improved operating efficiency (speed is fast); In addition, drill bit section is the dislocation arrangement architecture vertically, make about the external cutting rock, about stressed respectively, make the automatic attrition crushing of rock.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, does not constitute to improper qualification of the present utility model, in the accompanying drawings:

The structural representation of the drill bit that Fig. 1 provides for the utility model embodiment;

The vertical view of the drill bit that Fig. 2 provides for present embodiment;

Fig. 3 is the structural representation of cutter head in the present embodiment.

The specific embodiment

Describe the utility model in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the utility model in this illustrative examples of the present utility model and explanation, but not as to qualification of the present utility model.

Shown in Fig. 1～3, the drill bit that present embodiment provides comprises knife bar 1, cutter head 2 and cuts into slices 201:

Knife bar 1 comprises round platform section 102 and cylindrical section 101, and cutter head 2 is set on the knife bar round platform 102, and the cutter head of varying number can be set according to actual conditions, as 3,4,5, in the present embodiment accompanying drawing situation that 3 cutter heads are set, 2 one-tenth circular-arc being distributed on the knife bar round platform 102 of three cutter heads

At least two of settings straggly section 201 on the cutter head 2 (show among the figure for the situation of two sections is set), vertically shifts to install simultaneously at two section 201 transversion malpositions, i.e. two sections not on same horizontal plane, also not on same vertical plane,

Chip area 3 is set on the knife bar 1, and chip area 3 extends to the bottom of knife bar cylindrical section 101 from the conical surface 103 of knife bar round platform.

The drill bit 201 transversion malposition arrangement architectures of cutting into slices form the operation principle of twice cutting, avoid whole cutting stressed excessive, destroy cutter head; In addition, drill bit section transversion malposition arrangement architecture makes and cuts powder for the first time and discharge the dislocation crack before and after the cutter head section, has protected the secondary cutting cutter head to be subjected to repeated wear;

In order to strengthen the cutting force of drill bit, section 201 can be set in round platform 102 upper ends of knife bar, for the situation of two sections is set in round platform upper end, simultaneously, on the end face of the front of section direction of rotation, chip area 3 is set in the present embodiment accompanying drawing.

In addition, in order to strengthen the fastness of cutter head 2, can take following scheme: the outermost section of cutter head extends to cylindrical section, and described outermost section has an inclined-plane with respect to cylinder.

More than technical scheme that the utility model embodiment is provided be described in detail, used specific case herein principle and the embodiment of the utility model embodiment are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as restriction of the present utility model.

Claims

1. a drill bit comprises knife bar and cutter head, and section is set on the cutter head, and the chip area of at least one is set on the knife bar;

It is characterized in that: on the described knife bar round platform at least one cutter head is set, at least two sections of setting straggly on the cutter head, described at least two section transversion malposition, while vertically shift to install.

2. drill bit as claimed in claim 1 is characterized in that: the round platform upper surface of described knife bar also is provided with the section of at least one, on the end face of front of section direction of rotation chip area is set.

3. drill bit as claimed in claim 1 or 2 is characterized in that: described knife bar round platform is provided with three cutter heads, and three cutter heads become circular-arc and are distributed on the knife bar round platform.

4. drill bit as claimed in claim 3 is characterized in that: the outermost section of described cutter head extends to cylindrical section, and described outermost section has an inclined-plane with respect to cylinder.