CN204295014U - Drill bit - Google Patents

Abstract

The utility model provides drill bit, comprise drillstock, be located at the brill body of drillstock one end, be located at bore body top apex point, be located at brill some cutting edges with it, establish chip area on the cutting edge, between adjacent two cutting edges, be equipped with spiral guide slot outside described brill body.Structure is simple, fixation, excretion is smooth and easy, cooling is quick, operating efficiency is high, long service life.

Description

Drill bit

Technical field

The utility model relates to cutter field, is specifically related to drill bit.

Background technology

Drill bit is the cutter that boring is commonly used, drill bit is when holing, mainly through cutter head top, workpiece is cut, by chip area, chip is discharged, if chip can not be discharged very smoothly, the hole inwall bored then can be caused to occur cut, workpiece is even caused to become waste product, chip removal is slow, there is cut in easy causing hole inwall, in the process of cutting, pulverous iron filings are not easy to discharge from chip-removal hole, easily cut is produced to hole inwall when being deposited in position of tool tip, simultaneously, when cutter head being cooled in working angles, because chip area needs ceaselessly to carry out chip removal process, cooling fluid is not easy to enter into position of tool tip, make corner wear very fast, affect operating efficiency, in the process of cutting for a long time, chuck easily produces loosening, thus affect bit, or drill bit drillstock in the process rotated moves up.

Summary of the invention

Technical problem to be solved in the utility model is to provide drill bit, and structure is simple, fixation, excretion is smooth and easy, cooling is quick, operating efficiency is high, long service life.

For solving above-mentioned existing technical problem, the utility model adopts following scheme: drill bit, comprise drillstock, be located at the brill body of drillstock one end, be located at bore body top apex point, be located at brill some cutting edges with it, establish chip area on the cutting edge, between adjacent two cutting edges, be equipped with spiral guide slot outside described brill body.

As preferably, the both sides of described spiral guide slot are equipped with 45 ° of chamferings, and structure is simple, long service life, in the process of cut workpiece, the both sides of spiral guide slot can not produce cut to the hole wall of cutting hole, simultaneously, carrying out in the process cooled, how more convenient the inflow of cooling fluid is more.

As preferably, described drillstock is equipped with symmetrically two splines and stopper slot, structure is simple, fixation, in the process that drill bit is fixed, spline and stopper slot can effectively make drill bit firmly be fixed on chuck, in the process of processing, drill bit can not carry out relative rotation with chuck.

As preferably, in described spline and stopper slot, be equipped with the anti-feather key of a row, structure be simple, fixation, after drill bit is installed to chuck, in the process of cutting, drill bit can not be excessive and drill bit entirety is moved up due to downward active force.

As preferably, described anti-feather key adopts the trapezium structure of outwardly convex, makes fixing more firm, and when drill bit is installed to after above chuck, drill bit there will not be and moves up or down.

Beneficial effect:

The utility model adopts technique scheme to provide drill bit, in the process of boring, chip removal can be made more smooth and easy, when cooling drill bit, cooling fluid can be transported to the top of drill bit timely, firmly can fix between drill bit and chuck, make drill bit there will not be and carry out relative to rotating or move with chuck in the process of processing, structure simply, fixation, excretion is smooth and easy, cooling is quick, operating efficiency is high, long service life.

Accompanying drawing explanation

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

Detailed description of the invention

As shown in Figure 1, drill bit, comprise drillstock 6, be located at the brill body 5 of drillstock 6 one end, be located at the apex point 1 boring body 5 top, some cutting edges 2, the chip area 4 be located on cutting edge 2 be located on brill body 5, outside described brill body 5, between adjacent two cutting edges 2, be equipped with spiral guide slot 3; The both sides of described spiral guide slot 3 are equipped with 45 ° of chamferings; Described drillstock 6 is equipped with symmetrically two splines 8 and stopper slot 9; The anti-feather key of a row is equipped with in described spline 8 and stopper slot 9; Described anti-feather key 7 adopts the trapezium structure of outwardly convex.

During real work, drillstock 6 is installed in machine clamp, by spline 8 and stopper slot 9, drill bit is fixed in fixture accurately, and rotating not easily appears in drill bit in the process of processing, drill bit is made not easily to occur moving up and down in fixture by anti-feather key 7, boring process is carried out by apex point 1 and cutting edge 2 pairs of products, in the process of boring, undertaken outside tap by chip area 4 pairs of iron filings, simultaneously, iron filings powder also can be discharged by spiral guide slot 3, when cooling drill bit, cooling fluid can be made to be fed directly to apex point 1 place by spiral guide slot 3, make the cooling effect at apex point 1 place better, longer service life, structure is simple, fixation, drain smooth and easy, cooling fast, operating efficiency is high, long service life.

Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.

Claims (2)

1. drill bit, comprise drillstock (6), be located at the brill body (5) of drillstock (6) one end, be located at the apex point (1) boring body (5) top, be located at some the cutting edges (2) bored on body (5), be located at the chip area (4) on cutting edge (2), it is characterized in that: described brill body (5) outside is positioned between two adjacent cutting edges (2) and is equipped with spiral guide slot (3), described drillstock (6) is equipped with symmetrically two splines (8) and stopper slot (9), the anti-feather key of a row (7) is equipped with in described spline (8) and stopper slot (9), described anti-feather key (7) adopts the trapezium structure of outwardly convex.

2. drill bit according to claim 1, is characterized in that: the both sides of described spiral guide slot (3) are equipped with 45 ° of chamferings.