CN202462545U

CN202462545U - Drill bit

Info

Publication number: CN202462545U
Application number: CN2012200930492U
Authority: CN
Inventors: 谢玲艳
Original assignee: YUYAO SHISEN COPPER FACTORY
Current assignee: YUYAO SHISEN COPPER FACTORY
Priority date: 2012-03-13
Filing date: 2012-03-13
Publication date: 2012-10-03
Anticipated expiration: 2022-03-13

Abstract

The utility model relates to a drill bit comprising a drilling rod and a cutting head. A handle part is formed at the rear end of the drilling rod and a connecting part is formed at the front end of the drilling rod; a drilling core is further connected with the front end of the connecting part; the cutting head comprises a cutter edge, an end surface and a through hole penetrating through the cutting head; the drilling core penetrates through the through hole and is exposed from the end surface; and the connecting part is located in the through hole. Compared with the prior art, the drilling rod and the cutting head of the drill bit are in an assembly type structure, so that the drilling rod and the cutting head can be respectively manufactured and do not need to be integrally molded; and therefore, the waste of materials is greatly reduced in a machining process.

Description

Drill bit

Technical field

The utility model relates to the wood working tool field, relates in particular to a kind of drill bit.

Background technology

Shown in Figure 1 is the cutter that is used for plank boring of a prior art, and it comprises tool rest 01, drill bit 02 and handle of a knife 03.Tool rest 01 is formed at an end of handle of a knife 03, in order to cut off plank band and perforate on plank.Drill bit 02 is positioned at the centre position of tool rest 01, is used to drive this cutter towards incised.But because such cutter generally is one-body molded with metal material, therefore such structural form can cause the generation of waste material 04, thereby causes the more wasting of resources.Therefore, how to save cost and possess certain product quality again, become those skilled in the art's problem demanding prompt solution.

The utility model content

In view of this, be necessary to provide a kind of drill bit of processing the time material saving.

The utility model is achieved in that a kind of drill bit, comprises drilling rod and bit, and the rear end of said drilling rod forms shank; Front end forms connecting portion; The front end of said connecting portion also is connected with the brill core, and bit comprises blade, end face and run through the through hole of this bit that said brill core passes said through hole; And expose from said end face, said connecting portion is in said through hole.

Preferably, be formed with the threaded portion on the said connecting portion, said through hole also comprises a screw section, and said screw section matches with said threaded portion.

Preferably, said drilling rod also is connected through said weld part with said bit.

Preferably, said bit also comprises base, and said base and said end face are positioned at the opposite end of said bit, and the periphery of said base is formed with chamfering.

Preferably, said blade protrudes from this end face from the periphery of said end face.

With respect to prior art, drilling rod that the drill bit of the utility model is included and bit are fabricated construction, so drilling rod and bit can process respectively, need not one-body moldedly, therefore can reduce the waste that adds the material in man-hour widely.

Above-mentioned explanation only is the general introduction of the utility model technical scheme; In order more to know the technological means of understanding the utility model; And can implement according to the content of specification, and for let the above-mentioned of the utility model with other purpose, feature and advantage can be more obviously understandable, below special act embodiment; And conjunction with figs., specify as follows.

Description of drawings

Below in conjunction with accompanying drawing the embodiment of the utility model is described, wherein:

Fig. 1 is a tool structures sketch map of the prior art.

Fig. 2 is the exploded view of the drill bit of the utility model embodiment.

Fig. 3 is the stereogram of the drill bit of Fig. 2.

Fig. 4 is the side-looking exploded view of the drill bit of Fig. 2.

Fig. 5 is the cutaway view of the drill bit of Fig. 2.

The specific embodiment

Below be further elaborated based on the specific embodiment of accompanying drawing to the utility model.Should be appreciated that specific embodiment described herein as just embodiment, and be not used in the protection domain that limits the utility model.

Please refer to Fig. 2 to Fig. 5, the drill bit that the utility model embodiment is provided comprises drilling rod 10 and bit 20.Drilling rod 10 is made from a variety of materials with bit 20, and the hardness of bit 20 is greater than the hardness of drilling rod 10.

Drilling rod 10 is lip pencil, and its rear end forms shank 11, and front end forms connecting portion 12, and the front end of connecting portion 12 also is connected with and bores core 13.As preferably, it is one-body molded with connecting portion 12 to bore core 13.Be formed with threaded portion 121 on the connecting portion 12.

Bit 20 comprises blade 21, end face 22 and runs through the through hole 23 of this bit 20.Blade 21 protrudes from this end face 22 from the periphery of end face 22.One end opening of through hole 23 is positioned on the end face 22, and other end opening is positioned at the bottom surface of bit 20.The size of through hole 23 matches with the size of boring core 13, is used for supplying to bore core 13 and passes.As preferably, through hole 23 also comprises a screw section 231, screw section 231 be used for drilling rod 10 on threaded portion 121 match, make drilling rod 10 and bit 20 relative fixed.Bit 20 also comprises base 24, and base 24 and end face 22 are positioned at the opposite end of bit 20.The periphery of base is formed with chamfering 241, is used to supply an external tool to drive.

When assembling this drill bit; The connecting portion 12 of drilling rod 10 is inserted in the through hole 23 of bit 20; Brill core 13 is exposed from the end face 22 of bit 20; The shank 11 of drilling rod 10 is positioned at the other end of bit 20, matches with the screw section 231 of through hole 23 in 121 of threaded portions on the connecting portion 12, makes drilling rod 10 fixing with bit 20.Then, drilling rod 10 and bit 20 are carried out local welding, form weld part 30 with scolder, make between drilling rod 10 and the bit 20 be connected more fastening.

Drilling rod that the drill bit of the utility model is included and bit are fabricated construction; But not integrated formed structure of the prior art, so drilling rod and bit can take material different to process, and can process respectively; Therefore need not one-body moldedly, can reduce the waste of material widely.

The above is merely the preferred embodiment of the utility model, not in order to restriction the utility model, interior any modification of doing of all spirit at the utility model and principle, is equal to and replaces and improvement etc., all should be included in the protection domain of the utility model.

Claims

1. a drill bit comprises drilling rod and bit, it is characterized in that; The rear end of said drilling rod forms shank, and front end forms connecting portion, and the front end of said connecting portion also is connected with the brill core; Bit comprises blade, end face and runs through the through hole of this bit; Said brill core passes said through hole, and exposes from said end face, and said connecting portion is in said through hole.

2. drill bit as claimed in claim 1 is characterized in that, is formed with the threaded portion on the said connecting portion, and said through hole also comprises a screw section, and said screw section matches with said threaded portion.

3. drill bit as claimed in claim 2 is characterized in that, said drilling rod also is connected through said weld part with said bit.

4. drill bit as claimed in claim 1 is characterized in that said bit also comprises base, and said base and said end face are positioned at the opposite end of said bit, and the periphery of said base is formed with chamfering.

5. drill bit as claimed in claim 1 is characterized in that, said blade protrudes from this end face from the periphery of said end face.