CN201505751U

CN201505751U - Tipped bit

Info

Publication number: CN201505751U
Application number: CN2009200481576U
Authority: CN
Inventors: 钱银光
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-31
Filing date: 2009-08-31
Publication date: 2010-06-16
Anticipated expiration: 2019-08-31

Abstract

The utility model relates to a holed internal-cooling bit, in particular to a tipped bit, which comprises a bit tool, a cutter bar and a cutter holder, wherein the cutter bar and the cutter holder are internally provided with internal cooling holes, the cutter bar is provided with a chip groove, the cutter bar and the cutter holder are coasted into a whole, and the bit tool is of a hard alloy bit tool, and is welded on the end of the cutter bar. The utility model greatly saves the production cost.

Description

Weldering cutting drill head

Technical field

The utility model relates to a kind of internal-cooling bit of drill of perforate, especially welds the cutting drill head.

Background technology

Drill bit is to go out through hole or blind hole in order to drilling on solid material, and can be to the cutter of existing hole reaming.Drill bit commonly used mainly contains fluted drill, chit drill, centre drill, depth drill and cylindrical drill.Used common drill bit generally uses material to be carbide alloy and high-speed steel, and with the drill bit that Hardmetal materials is made, though durable in use, price is very high, and the outside diameter of producing can not surpass

Production use cost height, with the drill bit that high-speed steel is made, though low price, use cost is cheap relatively, because the low fracture easily of the drill bit rigidity of high speed steel material, so use cumbersomely, often change.

Summary of the invention

The utility model provides a kind of weldering cutting drill head at the not enough shortcoming of the high high speed steel material rigidity of Hardmetal materials production use cost in the above-mentioned technology.

The realization the technical solution of the utility model is as follows:

Weldering cutting drill head, it comprises cutter head, knife bar, handle of a knife, cold hole in knife bar and handle of a knife, having, has chip area on the knife bar, the casting integrated moulding of described knife bar and handle of a knife, described cutter head is a carbide bit, and this cutter head is welded on the knife bar end, and carbide bit is fixedly connected on the axial end of knife bar end by silver soldering.

Cold hole is cold hole in the Y type that supplies coolant flow in described.

Use above technology, weldering cutting drill head, it comprises knife bar, handle of a knife and the interior cold hole in body and handle of a knife that high speed steel material is made, have two chip areas on the knife bar, the axial end of knife bar end is provided with the rectangle carbide bit, the carbide bit that makes the utility model use is fixedly connected on the knife bar of high-speed steel by silver soldering, makes it can reach the same effect of carbide drill, and production cost is saved greatly.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is that the A of Fig. 1 is to schematic diagram;

Among the figure: 1, cutter head, 2, knife bar, 3, handle of a knife, 4, interior cold hole, 5, chip area.

The specific embodiment

As shown in Figure 1 and Figure 2, weldering cutting drill head, it comprises the rectangle cutter head 1 that Hardmetal materials is made, knife bar 2 that high-speed steel is made and handle of a knife 3, knife bar 2 and handle of a knife 3 casting integrated moulding and in have in cold hole 4, have two chip areas 5 on the knife bar 2, cutter head 1 utilizes silver soldering to be fixed on the axial end of knife bar 2 ends, cold hole 4 is the Y type at drill bit internal in described, and cold hole 4 flows into for cooling fluid and carry out cooling down operation when drill bit is worked in this.

The weldering cutting drill head that utilizes this utility model to make, minimum outer diameter reaches

Its cutter head 1 has reached the equal effect of carbide drill for carbide alloy, and has surmounted carbide drill dimensionally greatly, and knife bar 2 and handle of a knife 3 are high speed steel material, meets at this drill bit under the prerequisite of instructions for use to have saved production cost greatly.

Claims

1. weld the cutting drill head, it comprises cutter head, knife bar, handle of a knife, cold hole in knife bar and handle of a knife, having, has chip area on the knife bar, it is characterized in that: the casting integrated moulding of described knife bar and handle of a knife, described cutter head is a carbide bit, and this cutter head is welded on the knife bar end, and described carbide bit is fixedly connected on the axial end of knife bar end by silver soldering.

3. weldering cutting drill head according to claim 1 is characterized in that: cold hole is cold hole in the Y type that supplies coolant flow in described.