CN201493517U

CN201493517U - Diamond thin-wall drill bit

Info

Publication number: CN201493517U
Application number: CN2009200706673U
Authority: CN
Inventors: 方啸虎; 刘瑞平; 温简杰
Original assignee: SHANGHAI ZUANSHENG AND NEW MATERIAL TECHNOLOGY Co Ltd
Current assignee: SHANGHAI ZUANSHENG AND NEW MATERIAL TECHNOLOGY Co Ltd
Priority date: 2009-04-17
Filing date: 2009-04-17
Publication date: 2010-06-02
Anticipated expiration: 2019-04-17

Abstract

The utility model discloses a diamond thin-wall drill bit which comprises a cutter head, a steel body and a connecting end; the inner wall or the outer wall of the cutter head is provided with a groove; and the groove starts from the end of the cutter head and extends to the steel body. The groove arranged on the inner wall or the outer wall of the diamond thin-wall drill bit serves as a groove for water (liquid) to pass through and for removing chips. When in work, the drill bit can inject enough cooling liquid from the groove for the water (liquid) to pass through and for removing chips. Therefore, the drill bit and the processed material do not deform and are not burned because the temperature in a drilling area is reduced in time, so as to be applicable to high-speed drilling. The diamond thin-wall drill bit solves the defects of difficult coring and chip removal, temperature rise of the drill bit or the processed material area and the like of the prior diamond thin-wall drill bit. Because the drill bit is thinner, the energy consumption is greatly reduced and the cutting efficiency is higher. When in use, the coring is convenient, the chips are easy to be removed, and the diamond thin-wall drill bit can be used in the high-speed drilling of all crispy and rigid materials and reinforced concrete.

Description

Diamond thin-wall drill bit

Technical field

The utility model relates to a kind of drill bit, relate in particular to a kind of applicable to various crisp hard materials particularly armored concrete boring, get the diamond thin-wall drill bit of core.

Background technology

Diamond thin-wall drill bit is a kind of novel boring bar tool, is made up of steel body and cutter head, has that bore size is accurate, speed is fast, the material periphery is not had damage and do not need characteristics such as subsequent handling.Be mainly used in and in various construction materials, creep into aperture and major diameter eyelet, during especially for engineering renovation or building reconstruction the laying of electric wire or pipeline favourable, this external concrete is deep, its instrument that also is absolutely necessary when cutting large diameter hole.

The diamond thin-wall drill bit that traditional handicraft is made, when the drill bit drilling, generally speaking, adopt the cooling fluid of certain pressure to inject by the hollow part of drill bit, the minim gap of the inside and outside hole wall by drill bit and machined material forms path, reaches cooling and chip removal effect.Existing diamond thin-wall drill bit, its surfaces externally and internally that bores tooth all is a flat surface, mainly relies on end face to be aided with surfaces externally and internally drilling machined material, and drill bit is slowly pierced in the machined material, forms boring.Because drill bit when the drilling machined material, can produce a large amount of drilling heats, and the difficult drainage of the break flour under boring, be accumulated in drilling place, hinder going deep into of drill bit, rate of penetration is slowed down, and the break flour of piling up is because frictional heat; In addition, during work,, be difficult to inject enough cooling fluid cooling and chip removal, therefore, drill bit or machined material Yin Wendu raise deform, burn and can not use because the hole wall gap of drill bit and machined material is minimum.

Summary of the invention

Technical problem to be solved of the present utility model is to provide in a kind of use can conveniently get core, chip removal easily, and the diamond thin-wall drill bit of simple in structure, easy production is to overcome the above-mentioned defective that existing technology exists.

The technical scheme of the utility model technical solution problem is as follows:

A kind of diamond thin-wall drill bit comprises cutter head, steel body and adaper, it is characterized in that, the inwall or the outer wall of described cutter head offer groove, and described groove originates in the cutter head end and extends on the steel body always.Because wall is thinner,, more can improve stock-removing efficiency simultaneously so can significantly reduce the powder amount of cutting when creeping into.

The utility model by the diamond thin-wall drill bit inwall and or outer wall offer groove as water flowing (liquid), chip area.Usually inboard wall groove is a linear pattern, is convenient to the adding of cooling fluid and gets core; The outer wall groove is a screw type, and the hand of spiral is identical with drill bit spiral direction of advance, is convenient to break flour and discharges along helicla flute.Water flowing (liquid), chip area can not only make the smooth and easy eliminating of break flour under the drilling, reduce and creep into resistance, minimizing is because of the fricative heat of break flour, and because the existence of groove sidewall corner angle, when drill bit is crept into, partly become intermittently (impact) grinding principle by original continuous grinding mechanism, thereby strengthened the drilling dynamics, help improving rate of penetration.Can inject enough cooling fluids from water flowing (liquid), chip area during in addition owing to the work of the utility model drill bit, therefore, drill bit and machined material are lowered the temperature timely because of the drilling regional temperature can not deform, burn, thereby is fit to drill for high-speed processing.In a word, the utility model has solved existing diamond thin-wall drill bit and has got defectives such as core difficulty, chip removal difficulty, drill bit or the rising of machined material regional temperature.Can conveniently get core, chip removal easily in the use, can be used for the high-speed drilling processing of various crisp and hard materials and armored concrete.

Description of drawings:

Fig. 1 is the utility model diamond thin-wall drill bit structural representation.

Fig. 2 is embodiment vertical view of the utility model diamond thin-wall drill bit.

Fig. 3 is another embodiment vertical view of the utility model diamond thin-wall drill bit.

The specific embodiment

Further describe the utility model below in conjunction with accompanying drawing and embodiment.

As shown in Figure 1, diamond thin-wall drill bit comprises cutter head 1, steel body 2 and adaper 3.Cutter head 1 is a monoblock type or split type.Monoblock type cutter head 1 mixes back and steel body 2 integral sintered or preliminary cold moudling, sinter moldings then by diamond particles and metal dust.Direct heat was molded after split type cutter head 1 was mixed by diamond particles and metal dust, carried out high frequency or laser weld with steel body 2 again.Cutter head 1 and steel body 2 are the thin-walled that wall thickness is the 2.5-3.5 millimeter.The diamond thin-wall drill bit inwall and or outer wall respectively have 4 (as Fig. 2) or a plurality of (as Fig. 3) equally distributed groove 4 as water flowing (liquid), chip area, the 4 staggered uniform settings of the groove of inner and outer wall.Usually the groove 4 of inwall is a linear pattern, is convenient to the adding of cooling fluid and gets core; The groove 4 of outer wall is a screw type, and the hand of spiral is identical with drill bit spiral direction of advance, is convenient to break flour and discharges along helicla flute.

Claims

1. a diamond thin-wall drill bit comprises cutter head (1), steel body (2) and adaper (3), it is characterized in that the inwall of described cutter head (1) or outer wall offer groove (4), and described groove (4) originates in cutter head (1) end and extends on the steel body (2) always.

2. diamond thin-wall drill bit according to claim 1 is characterized in that: the inner and outer wall of described cutter head (1) all offers groove (4), and even distribution of the groove of inner and outer wall and quantity are identical.

3. diamond thin-wall drill bit according to claim 2 is characterized in that: the groove of inner and outer wall (4) the uniform setting that interlocks.

4. diamond thin-wall drill bit according to claim 1 is characterized in that: the groove (4) that is distributed on the inwall is the linear pattern groove.

5. diamond thin-wall drill bit according to claim 1 is characterized in that: the groove (4) that is distributed on the outer wall is helix-type flute.

6. diamond thin-wall drill bit according to claim 5 is characterized in that: the rotation direction of helix-type flute is consistent with drill bit spiral direction of advance.

7. diamond thin-wall drill bit according to claim 1 is characterized in that: described cutter head (1) is a monoblock type or split type.

8. diamond thin-wall drill bit according to claim 1 is characterized in that: the wall thickness of described cutter head (1) and steel body (2) is 2.5～3.5 millimeters.