CN202845876U

CN202845876U - Hole-forming composite drill boring cutter

Info

Publication number: CN202845876U
Application number: CN201220483296.3U
Authority: CN
Inventors: 宋良煜; 王伟; 张冬伟; 刘飞球
Original assignee: Chengdu Aircraft Industrial Group Co Ltd
Current assignee: Chengdu Aircraft Industrial Group Co Ltd
Priority date: 2012-09-21
Filing date: 2012-09-21
Publication date: 2013-04-03
Anticipated expiration: 2022-09-21

Abstract

The utility model aims at providing a hole-drilling cutter which is efficient and high in hole-forming precision. The hole-forming composite drill boring cutter comprises a cutter body and a cutter handle, wherein the front portion is the cutter body (1), the rear portion is the cutter handle (3), the front end of the cutter body is a hole-drilling blade (5), a boring cutter (2) protruding out of a main body of the cutter body is arranged in the middle of the cutter body (1), the hole-drilling blade (5) is provided with two cutting blades with vertex angles, a through groove arranged between the cutting blades is a chip removal groove, and the chip removal groove penetrates through the cutter body structurally. Rough hole drilling is achieved through the hole-drilling blade (5) at the front end of the cutter body, precision hole boring is achieved through the boring cutter (2) in the middle of the cutter body (1), and the cutter handle (3) of the rear portion is used for being connected with a cutter sleeve or other installation parts in a clamping mode. The hole-forming composite drill boring cutter integrates drilling with boring, achieves one-time clamping and forming of precision holes fast and efficiently by means of one motion, improves production efficiency, stabilizes machining quality, and lowers production cost. Moreover, machining quality of the holes can be stabilized to be over H7 precision.

Description

Drilling composite drill boring cutter

Technical field

The utility model relates to Tool Design and the manufacturing field of mechanical processing industry, and a kind of high accurate hole fabrication tool that integrates drilling and boring is provided especially.

Background technology

In mechanical processing industry and manufacturing industry, tend in parts, make different specification size, the hole that different accuracy requires, also there is the instrument of many drillings the while, has especially some high-precision holes.The methods of existing precision holes processed are mainly divided two classes, and a class is the hole of general precision, and this class hole can be made by direct drilling or by the mode of boring, reaming, fraising; Another kind of is high-precision hole, and this class hole is by the subdrilling initial apertures, and the recycling boring cutter is by the mode drilling of boring.High accurate hole for a certain specification, need at least drill bit and two kinds of cutters of boring cutter, simultaneously in order to guarantee the processing and manufacturing precision in hole, often need boring cutter is repeatedly artificially adjusted, so just increase the manufacturing risk in hole, especially the large or larger situation of hole number of some parts batch, the crudy in hole is difficult for guaranteeing.

Summary of the invention

It is high that the purpose of this utility model provides a kind of efficient, the drilling tool that the drilling precision is high.

A kind of drilling composite drill of the utility model boring cutter comprises blade and handle of a knife, and the front portion is blade, and the rear portion is handle of a knife, and the blade front end has the boring cutter that protrudes from the blade main body for boring blade, blade middle part.

The boring cutter that protrude at blade of the present utility model middle part is two-edged or single-blade structure.

The boring blade is that two cutting edges with drift angle are arranged, and the groove between the cutting edge is made as chip area, and debris discharging chute structure runs through blade.Blade front end boring blade realizes boring just hole, and blade middle part boring cutter is realized the smart hole of boring system, and the rear portion handle of a knife is used for being connected with broach shell or other installing component clampings.

The utility model integrates the brill boring, realizes clamped one time, an action, and the moulding of realization precision holes rapidly and efficiently, arrival is enhanced productivity, and stablizes crudy, the purpose that reduces production costs; The crudy in hole can be stabilized in the H7 precision and more than.

Description of drawings

Fig. 1 cutter structure schematic diagram

Fig. 2 straight trough shape cutter structure schematic diagram

The general apex point schematic diagram of Fig. 3

Fig. 4 tricuspid type apex point schematic diagram

Fig. 5 crescent moon grooved apex point schematic diagram

The general chisel edge structural representation of Fig. 6

Fig. 7 " S " type chisel edge structural representation

The specific embodiment

Below in conjunction with accompanying drawing, provide one or more embodiments of the present utility model.

See Fig. 1, shown in the cutter structure schematic diagram, a kind of high-efficiency high-accuracy drilling composite drilling boring cutter, blade 1 front end has the boring cutter 2 of protrusion for boring blade 5, blade middle part, and boring cutter 2 can be by welding, inlaying and be fixed in blade 1; Boring blade 5 is two cutting edges with drift angle, and the angle of the point of a knife 4 of its formation can be selected according to the demand of reality processing, generally can be set between 90 ° ~ 140 °.The angle Selection of point of a knife 4 determines that according to machined material and purposes drift angle is little, and the load on the unit length is light, axial force is little, but point of a knife intensity can reduce the drill bit frangibility thereupon, take plain steel or aluminum alloy processing material as example, this cutter point of a knife 4 optimized angles are 120 ° ~ 140 °; Rear portion handle of a knife 3 is the single clavate structure of slotless configuration, and handle of a knife 3 is used for being connected with broach shell or other installing component clampings.

Groove between two cutting edges partly is provided with chip area 7, also can be set to straight trough shape chip area as shown in Figure 2, sees Fig. 2 straight trough shape cutter structure schematic diagram.

Working (machining) efficiency and crudy in order to strengthen the hole also can be provided with in the clavate structure for the Cooling Holes 6 that cools off and lubricant medium passes through simultaneously, sees Fig. 1 cutter structure schematic diagram.

Whole precision holes process processed is: rear end handle of a knife 3 is connected with broach shell or other installing component clampings, be used for transmission equipment power, blade 1 anterior boring blade 5 carries out boring work, get out first the first hole of precision holes, blade middle part boring cutter 2 is made high-precision hole with the boring of first hole following closely, its whole process is continuous one-time action, has simultaneously cooling and lubricant medium to send from Cooling Holes 6.

The form of the point of a knife 4 of blade 1 front portion also can according to using needs, change W type tricuspid type point of a knife structure shown in Figure 4 or crescent moon grooved point of a knife structure shown in Figure 5 into except as shown in Figure 3 general point of a knife.

W type tricuspid type structure is usually used in the boring on the thin wall component.

Crescent moon grooved point of a knife structure is usually used in the larger cutter of diameter or the difficult situation of processing chip removal, for example darker hole of working depth.

The form of the anterior boring of blade 1 blade 5 also can according to using needs, change " S " type chisel edge structure shown in Figure 7 into except as shown in Figure 6 general chisel edge structure.

" S " type chisel edge version is usually used in the hole on the difficult-to-machine material processed, such as stainless steel, titanium alloy material etc.

Above-described embodiment only is used for illustrating a kind of high-efficiency high-accuracy drilling composite drilling boring cutter of the present utility model; but the utility model is not limited to embodiment; every foundation technical spirit of the present utility model all falls in the protection domain of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment does.

Claims

1. a drilling composite drill boring cutter comprises blade and handle of a knife, and the front portion is blade (1), and the rear portion is handle of a knife (3), and the blade front end is characterized in that for boring blade (5) blade (1) middle part has the boring cutter (2) that protrudes from the blade main body.

2. a kind of drilling composite drill boring cutter according to claim 1 is characterized in that described boring cutter (2) is the two-edged structure.

3. a kind of drilling composite drill boring cutter according to claim 1 is characterized in that described boring cutter (2) is the single-blade structure.

4. according to claim 1 to one of 3 described a kind of drilling composite drill boring cutters, it is characterized in that described boring cutter (2) is for welding or be embedded in blade (1).

5. according to claim 1 to one of 3 described a kind of drilling composite drill boring cutters, it is characterized in that the drift angle angle of the point of a knife (4) of blade (1) is 90 ° ~ 140 °.

6. a kind of drilling composite drill boring cutter according to claim 5 is characterized in that, the drift angle angle of the point of a knife (4) of blade (1) is 120 ° ~ 140 °.

7. according to claim 1 to 3 described a kind of drilling composite drill boring cutters, it is characterized in that it is provided with for the Cooling Holes (6) that cools off and lubricant medium passes through.

8. according to claim 1 to one of 3 described a kind of drilling composite drill boring cutters, it is characterized in that the form of the point of a knife (4) that blade (1) is anterior is W type tricuspid type apex point structure or crescent moon grooved apex point structure.

9. according to claim 1 to one of 3 described a kind of drilling composite drill boring cutters, it is characterized in that the form of blade (1) anterior boring blade (5) is " S " type chisel edge structure.