CN2823526Y

CN2823526Y - Double piece combined bull bit

Info

Publication number: CN2823526Y
Application number: CN 200520015707
Authority: CN
Inventors: 臧长磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-26
Filing date: 2005-04-26
Publication date: 2006-10-04
Anticipated expiration: 2015-04-26

Abstract

The utility model discloses a straight double-piece combined drill bit, which comprises an end part, a middle part and a handle part, wherein the end part and the middle part of the utility model are respectively composed of a drill body, an inclined hard alloy piece and a piece of circular filler. The drill body of the straight double-piece combined drill bit also works as a carrier, and is a relatively important part of the whole drill bit. The inclined body of the utility model forms a straight shape. The end part of the inclined hard alloy piece is a combination of straight double pieces. Moreover, the circular filler is filled in the end part of the inclined hard alloy piece. The utility model reduces the middle-fracture discarded phenomenon of hard alloy caused by overlong diameters of the drill bit and overlong alloy piece by the design of the double-piece combination and the filler filled inside. Meanwhile, the utility model reduces the consumption of resources. The utility model has the advantages of rare metal resource saving and convenient operation. The utility model is suitable for mine exploitation, drilling rocks, and is also suitable to be used by matching with tools for drilling tunnels, rocks, etc.

Description

Yi word pattern biplate combination bore bit

Technical field the utility model relates to a kind of annex of drilling tool, is applicable to the supporting use of instruments such as mining, rock drilling, tunnel, and in particular, the utility model relates to a kind of drill bit.

Background technology is present, and the conventional products of selling on market is compared with it, and structure is distinct, and this use is novel to be made up of pricker body, italic, hard metal tip and a round filler.The pricker body can adopt Y1 type, Y2 type, cross and X type all can, hard metal tip can be selected according to the needs in market, as the alloy sheet of the rock stratum that adapt such as YK20, ED25, JK1, YJ1.The italic hard metal tip can be used for yi word pattern, also can be used for cross and the pricker body X type, but the angle of these pricker bodies must conform to the italic alloy sheet.Round filler is easily processed, and can be used for the yi word pattern bore bit, also can be used for the middle of cross bore bit and fills, and is easy to use.

The summary of the invention the purpose of this utility model is the shortcoming that overcomes existing product, by the design of filler in the middle of the biplate combination, has reduced because of drill bit diameter excessively greatly, and alloy sheet is long and cause the phenomenon that ruptures and scrap in the middle of the carbide alloy.

The purpose of this utility model realizes by following technology.

The utility model yi word pattern biplate combination bore bit is made up of pricker body, italic hard metal tip and a round filler, and described italic is linearly.The end of described yi word pattern biplate combination bore bit is the biplate hard metal tip.

The utlity model has following advantage:

1, biplate combination produces two central points, and broken stone is felt relieved.

2, contact area is little, and pressure is big, and drilling depth is very fast.

3, italic linearly is easy to reconditioning.

4, the design of filler in the middle of the biplate combination greatly reduces because of drill bit diameter excessively, and alloy sheet is longer, and causes the phenomenon that ruptures and scrap in the middle of the hard metal tip.

5, reduce the utilization of resource, save rare metal resources.

Description of drawings Fig. 1 is a front view of the present utility model,

Fig. 2 is a vertical view of the present utility model,

Fig. 3 is a sectional view of the present utility model.

The specific embodiment is described the utility model biplate bore bit in conjunction with the accompanying drawings.

In the drawings, the head 1 of this drill bit is the italic hard metal tip, and this design top angle is 79 degree, helps just impact and the rotation of time spent, and middle two-supremes point is convenient to centering and broken stone, and fracture economized on resources again in the middle of the biplate combination can prevent.2 is circular inserts, and this design is beneficial to processing and operation.3 is the water hole, also can ventilate, and main effect is that the stone flour of fragmentation is gone out outside the hole.4 is the pricker body, also is carrier, is an important part of whole bore bit.5 is sludge groove, and all stone flour slags utilize water under high pressure or high pressure wind action, discharges outside the hole by this groove.6 is connecting hole, and this hole is roughly three kinds on taper hole, square hole and screw thread, can be connected with the drill steel of different size.

This bore bit mainly is applicable to mining, tunnel rock drilling, broken road surface building etc., and purposes is wider.

Claims

1, a kind of yi word pattern biplate combination bore bit comprises end, middle part and shank, it is characterized in that: described end, middle part are provided with to be made up of italic hard metal tip, pricker body and a circular filler.

2, yi word pattern biplate combination bore bit according to claim 1, it is characterized in that: described end is the biplate hard metal tip of yi word pattern.

3, yi word pattern biplate combination bore bit according to claim 1, it is characterized in that: the italic hard metal tip of described bore bit is linearly, and the high-end angle of italic hard metal tip is 79 degree ± 1.

4, yi word pattern biplate according to claim 1 combination bore bit is characterized in that: described circular filler, it highly is generally less than or equals the height of facing directly of alloy, diameter generally speaking, the thickness that is equal to or greater than alloy is advisable.