CN102390093A

CN102390093A - Diamond drill bit

Info

Publication number: CN102390093A
Application number: CN2011102902035A
Authority: CN
Inventors: 陈秋平; 陈晓龙
Original assignee: Quanzhou Luojiang District Shuangyang Diamond Tool Co Ltd
Current assignee: Quanzhou Luojiang District Shuangyang Diamond Tool Co Ltd
Priority date: 2011-09-27
Filing date: 2011-09-27
Publication date: 2012-03-28

Abstract

The invention relates to the technical field of drilling tools, in particular to a diamond drill bit. The invention provides the diamond drill bit, comprising a diamond tool bit and a round tubular metal matrix, wherein one end of the metal matrix is connected with the diamond tool bit, and the other end of the metal matrix is in a closed structure. The diamond drill bit is characterized in that a positioning drill bit is arranged inside the metal matrix, one end of the positioning drill bit is connected to the central position of the closed end of the metal matrix, and the other end of the positioning drill bit extends to the outer side of the diamond tool bit. According to the diamond drill bit provided by the invention, during drilling operation, it is not necessary to cut a positioning circle at the periphery of a hole to be drilled firstly with a drill bit, thereby deviation occurring when the high-speed rotating tool bit contacts marble and potential safety hazard caused by flying-out of the tool bit are avoided. After drilling is finished, waste material inside the drill bit can be taken out easily. In addition, during the drilling operation, the stress of diamond drill bit is more uniform, and the service life of the diamond drill bit is prolonged to a maximum degree.

Description

A kind of diamond bit

Technical field

The present invention relates to the drilling tool technical field, the particularly a kind of diamond bit that can accurately locate.

Background technology

The diamond drill machine epicranium extensively applies to the field of hard brittle material bore operations such as metal material, stone material or concrete, and there are inevitable two defectives in diamond bit in operation process for a long time, and the one, the location is difficult, and the 2nd, get the core difficulty.With marble boring is example; When boring, must cut out a centring ring in the periphery in the hole of required brill in first edge with cutter head; Cutter head is put into centring ring just can carry out bore operation; As with directly operation on marble of cutter head, the cutter head of rotation at a high speed with will take place to squint and can't locate when marble contacts, even cutter head can take place fly out and cause potential safety hazard; The marble waste material can be stayed in the diamond bit steel body after boring, gets the core difficulty.Patent Office of the People's Republic of China's on November 19th, 2008, the disclosed patent No. comprised cutter head, steel body, adaper for " the novel diamond bit " of " ZL200720103055.0 "; The steel body is a tubular structure, and the one of which end is provided with cutter head, and the other end is provided with adaper; Adaper links together steel body and electric tool; It is characterized in that: cutter head is that turbine type is divided toothing, and its top is the unfilled corner form of cross symmetry, below unfilled corner, is provided with some turbine grooves; The cutter head structure that Patent Office of the People's Republic of China's issued patents on August 9th, 2009 number is compared with it just to diamond bit for " diamond bit " of " 200820124026.7 " changes.Above-mentioned two kinds of diamond bits just improve cutter head, can not overcome diamond bit fully and in operation process, locate the difficult problem difficult with getting core.

Summary of the invention

In order to address the above problem, the invention provides a kind of diamond bit.

The invention provides a kind of diamond bit; Comprise diamond segment, pipe shape metallic matrix; Said metallic matrix one end is connected with diamond segment, and the other end is an enclosed construction, it is characterized in that: said metallic matrix set inside has a location drill bit; The first end of said spitting drill is connected the blind end center of metallic matrix, and the other end extends to the diamond segment outside.

Further, said location drill bit and metallic matrix removably connect.

Further, said location drill bit is a fluted drill.

Further, be formed with the elongated hole that vertically extends on the sidewall of said metallic matrix.

Further, the outer side center of said metallic matrix blind end is formed with a connector, and the inboard center of metallic matrix blind end is formed with and extends to the locating hole that is used to hold the first end of spitting drill in the connector.

Further, said connector outer wall is formed with the screw that is communicated with locating hole, is equipped with clamping screw in the said screw.

Further, said metallic matrix and connecting portion are formed in one.

The present invention has following beneficial effect:

According to diamond bit provided by the invention; In the operation process of boring; Need not to cut out a centring ring in the periphery in the hole of required brill with drill bit earlier; The center of circle that only needs directly locate the hole of the required brill of drill bit gets final product operation, time generation is squinted and cutter head flies out the potential safety hazard of having avoided that the cutter head of rotation at a high speed contacts with marble; After boring finishes, can will be retained in the inner waste material of diamond bit easily and take out through dismounting location drill bit.Owing to locate the positioning action of drill bit, diamond segment is stressed more even when bore operation, the life-span of having improved diamond bit to greatest extent simultaneously.

Description of drawings

Below in conjunction with accompanying drawing the present invention is done further detailed explanation.

Fig. 1 is the sketch map of the diamond bit of the embodiment of the invention.

Fig. 2 is the front schematic view of the diamond bit of the embodiment of the invention.

Fig. 3 is the generalized section of the diamond bit of the embodiment of the invention.

Fig. 4 is the diagrammatic sketch of bowing of the diamond bit of the embodiment of the invention.

The specific embodiment

Technical scheme is for a better understanding of the present invention described embodiments of the invention in detail below in conjunction with accompanying drawing.

With reference to Fig. 1, Fig. 2, shown in Figure 3; A kind of diamond bit comprises diamond segment 20, pipe shape metallic matrix 10, and said metallic matrix 10 1 ends are connected with diamond segment 20; The other end is an enclosed construction; Said metallic matrix 10 blind ends are one-body molded to have a cylindrical connector 30, and this connector 30 is positioned at the center of metallic matrix 10 blind ends, and the inboard center of metallic matrix 10 blind ends is formed with and extends to the locating hole 31 that is used to hold location drill bit 40 1 ends in the connector 30; Connector 30 outer walls are formed with the screw 32 that is communicated with locating hole, are equipped with clamping screw 33 in the said screw 32.Be distributed with 4 elongated holes 11 that vertically extend on the sidewall of metallic matrix 10.

With reference to Fig. 3, shown in Figure 4; Said metallic matrix 10 set inside have a spiral bit 40; One end of said spiral bit 40 is fixed on metallic matrix 10 blind end inboards through clamping screw 33 and extends in the locating hole 31 of connector 30, and the other end extends to the diamond segment outside.

The above is merely preferred embodiment of the present invention, so can not limit the scope that the present invention implements with this, the equivalence of promptly doing according to claim of the present invention and description changes and modifies, and all should still belong in the scope that patent of the present invention contains.

Claims

1. one kind diamond bit; Comprise diamond segment, pipe shape metallic matrix; Said metallic matrix one end is connected with diamond segment, and the other end is an enclosed construction, it is characterized in that: said metallic matrix set inside has a location drill bit; The first end of said spitting drill is connected the blind end center of metallic matrix, and the other end extends axially to the diamond segment outside along metallic matrix.

2. diamond bit according to claim 1 is characterized in that: said location drill bit and metallic matrix removably connect.

3. diamond bit according to claim 1 is characterized in that: said location drill bit is a fluted drill.

4. diamond bit according to claim 1 is characterized in that: be formed with the elongated hole that vertically extends on the sidewall of said metallic matrix.

5. diamond bit according to claim 1; It is characterized in that: the outer side center of said metallic matrix blind end is formed with a connector, and the inboard center of metallic matrix blind end is formed with and extends to the locating hole that is used to hold the first end of spitting drill in the connector.

6. diamond bit according to claim 5 is characterized in that: said connector outer wall is formed with the screw that is communicated with locating hole, is equipped with clamping screw in the said screw.

7. diamond bit according to claim 5 is characterized in that: said metallic matrix and connecting portion are formed in one.