CN204646102U

CN204646102U - An a kind of novel word drill bit

Info

Publication number: CN204646102U
Application number: CN201520349002.1U
Authority: CN
Inventors: 陈永兵
Original assignee: Qidong Lvsi Technology Innovation Center Co Ltd
Current assignee: Qidong Lvsi Technology Innovation Center Co Ltd
Priority date: 2015-05-27
Filing date: 2015-05-27
Publication date: 2015-09-16
Anticipated expiration: 2025-05-27

Abstract

The utility model discloses an a kind of novel word drill bit, connected and composed by apex point and drill body body two parts, its innovative point is: the structure of described apex point is polymorphic structure, the structure of described drill body body is cylinder, one end of described drill body body is connected with apex point, the connected mode of described apex point and drill body body is monolithic molding, the other end of described drill body body, offers positioning groove near terminal position place.The apex point of polymorphic structure, gravity vent and positioning groove effectively combine by drill bit of the present utility model, and achieve drill bit row bevel long-pending large, the row of being easy to cuts, thus avoids the generation of bit freezing event, and is conducive to the clamping of the drill jig of drill bit and electric drill.

Description

An a kind of novel word drill bit

Technical field

The utility model belongs to drill bit field, particularly relates to an a kind of novel word drill bit.

Background technology

Cutter on brill, drilling machine, rig, can cause hole on workpiece or rock.Xu Chi " Goldbach's Conjecture's oil head ": " in 1956, China's bored material was somewhat nervous, and drill bit is not enough." course of work dig pit operation time, drill bit, with vertical shaft rotary, moves axially simultaneously.Soil is cut under the moment of torsion and responsive to axial force of drill bit, is raveled under the extruding and centrifugal action of working-blade, forms native stream and presses to hole wall, simultaneously along page elevator to earth's surface.When native stream moves to without hole wall stop place, because centrifugal action hack is thrown around hole, complete the process of digging pit.

Drill bit is the cutter that boring is commonly used, drill bit is when holing, mainly through cutter head top, workpiece is cut, by chip area, chip is discharged, if chip can not be discharged very smoothly, the hole inwall bored then can be caused to occur cut, workpiece is even caused to become waste product, during drill bit design, the helical angle of chip area directly affects the speed of its chip removal, the larger chip removal of helical angle is more smooth and easy, but, chip also can be larger to the wearing and tearing of drill bit, helical angle is less, chip removal can be slow, relatively little to bit wear, existing drill bit normally arranges three chip areas, chip area is narrow, so helical angle is usually smaller, chip removal is slow, there is cut in easy causing hole inwall.

One word drill bit is one of air drill drill bit that must configure, at present, a known word drill bit by boring body, holder, in-line cutting edge form, one word drill bit is mainly applicable to mine rock, tunnel, coal seam etc. and drills, in Long-Time Service, the same problem of operating workers ubiquity, bit drills is entered than being easier to, but pulls out just very difficult: one is often blocked by rubble; Two is that the rock ballast shaken can block drill bit, even can pull out out, and this both wasted the time, wastes again drilling rod and drill bit because vibration frequency is comparatively large when drilling.

Utility model content

The technical problems to be solved in the utility model holes easily to pull out hole difficulty.

For solving the problems of the technologies described above, the utility model provides following technical scheme: an a kind of novel word drill bit, connected and composed by apex point and drill body body two parts, it is characterized in that: the structure of described apex point is polymorphic structure, the structure of described drill body body is cylinder, and one end of described drill body body is connected with apex point, and the connected mode of described apex point and drill body body is monolithic molding, the other end of described drill body body, offers positioning groove near terminal position place.

Further, described apex point offers gravity vent, the diameter of described gravity vent is 0.5 ~ 0.8cm.

Further, the drift angle number of degrees of the apex point of described polymorphic structure are 15 ~ 25 °, and the front and rear surfaces of described polymorphic structure is elliptical shape, and the axis angle of described oval surface and polymorphic structure apex point is 7 ~ 15 °.

Further, described positioning groove is the groove offering two semicircle strips along cylinder drill body body periphery.

The beneficial effects of the utility model are as follows:

1, the apex point of polymorphic structure, gravity vent and positioning groove effectively combine by drill bit of the present utility model, and achieve drill bit row bevel long-pending large, the row of being easy to cuts, thus avoids the generation of bit freezing event, and is conducive to the clamping of the drill jig of drill bit and electric drill;

2, the setting of the apex point drift angle number of degrees of the present utility model, the row's of making bevel is long-pending to be maximized, and avoids by rubble, brokenly cuts accumulation, thus occur the phenomenon of bit freezing;

3, the heat produced under working at high speed effectively discharges by gravity vent that apex point portion of the present utility model is provided with timely, avoids that heat occurs and cannot shift and occur the phenomenon of Drill Crack;

4, the end of drill body body of the present utility model is provided with positioning groove, is conducive to the clamping of drill jig to drill bit of electric drill, avoids the self falling under bit operation state.

Accompanying drawing explanation

If Fig. 1 is structural representation of the present utility model.

Detailed description of the invention

Drawing reference numeral: 1, gravity vent, 2, apex point, 3, drill body body, 4, positioning groove

For making utility model object of the present utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.

The structure of a word drill bit of the present utility model as shown in Figure 1, an a kind of novel word drill bit, connected and composed by apex point 2 and drill body body 3 two parts, it is characterized in that: the structure of apex point 2 is polymorphic structure, the structure of drill body body 3 is cylinder, one end of drill body body 3 is connected with apex point 2, apex point 2 is monolithic molding with the connected mode of drill body body 3, the other end of drill body body 3, positioning groove 4 is offered near terminal position place, positioning groove 4 is the groove offering two semicircle strips along cylinder drill body body 3 periphery, be conducive to the clamping of drill jig to drill bit of electric drill like this, avoid the self falling under bit operation state.

Apex point 2 offers gravity vent 1, the diameter of gravity vent 1 is 0.5 ~ 0.8cm, and the heat produced under working at high speed effectively discharges by gravity vent timely, avoids that heat occurs and cannot shift and occur the phenomenon of Drill Crack.

The drift angle number of degrees of the apex point 2 of polymorphic structure are 15 ~ 25 °, and the front and rear surfaces of polymorphic structure apex point 2 is elliptical shape, and the axis angle of oval surface and polymorphic structure apex point 2 is 7 ~ 15 °.The setting of the apex point 2 drift angle number of degrees, the row's of making bevel is long-pending to be maximized, and avoids by rubble, brokenly cuts accumulation, thus occur the phenomenon of bit freezing.

Apex point portion of the present utility model above-described embodiment is preferred embodiment of the present utility model; it is not the restriction to technical solutions of the utility model; as long as without the technical scheme that creative work can realize on the basis of above-described embodiment, all should be considered as falling within the scope of the rights protection of the utility model patent.

Claims

1. a novel word drill bit, connected and composed by apex point and drill body body two parts, it is characterized in that: the structure of described apex point is polymorphic structure, the structure of described drill body body is cylinder, one end of described drill body body is connected with apex point, the connected mode of described apex point and drill body body is monolithic molding, the other end of described drill body body, offers positioning groove near terminal position place.

2. the novel word drill bit of one according to claim 1, is characterized in that: described apex point offers gravity vent, and the diameter of described gravity vent is 0.5 ~ 0.8cm.

3. the novel word drill bit of one according to claim 1, it is characterized in that: the drift angle number of degrees of the apex point of described polymorphic structure are 15 ~ 25 °, the front and rear surfaces of described polymorphic structure is elliptical shape, and the axis angle of described oval surface and polymorphic structure apex point is 7 ~ 15 °.

4. a kind of New type drilling drill bit according to claim 1, is characterized in that: described positioning groove is the groove offering two semicircle strips along cylinder drill body body periphery.