CN205254197U

CN205254197U - A toper drilling reamer utensil for carbon -fibre composite

Info

Publication number: CN205254197U
Application number: CN201520785103.3U
Authority: CN
Inventors: 刘剑鸣
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-10-12
Filing date: 2015-10-12
Publication date: 2016-05-25
Anticipated expiration: 2025-10-12

Abstract

The utility model discloses a toper drilling reamer utensil for carbon -fibre composite, including work portion and stalk portion, work portion including setting up in the drilling work portion of front end and the fraising work portion of rear end, drilling work portion including setting up in the first drilling work portion of front end, setting gradually in the second drilling work portion and the third drilling work portion of rear end, the first drill tip angle of first drilling work portion be 90, the second drill tip angle of second drilling work portion be 120, the drill tip angle is the apex angle of the rotatory conical surface of this cutting edge of cutter. The utility model provides a more effectual carbon -fibre composite hole machining tool that drills and reams, the problem of defect such as can avoid appearing material burn, layering, burr easily in the processing effectively, tear.

Description

For the tapered bur reamer tool of carbon fibre composite

Technical field

The utility model relates to a kind of metal material processing equipment, relates in particular to a kind of auto-feed and bores cutter.

Background technology

Along with the development carbon fibre composite of aircraft industry is just being widely used in aircraft manufacturing, and make in aircraft manufacturingHole is a very important ring, is the prerequisite that ensures drilling quality and select suitable cutter and instrument. Carbon fibre compositeBecause its quality having is light, intensity is large, wearability is high, good, the high temperature resistant outstanding advantages such as good of anti-fatigue performance, it is established at aircraftIn meter, manufacture, there is better advantage and application and also brought the problem of carbon fibre composite at processing and fit on thereupon.Now the uniqueness of carbon fibre composite more highlights, and becomes the subject matter source of boring, assembling. At carbon fiberWhen composite boring, to overcome the high strength of carbon fiber composite structure, high rigidity, poor thermal conductivity, layer and interlaminar strength lowEtc. a difficult problem. Use at present carbide alloy standard fluted drill to composite drilling, this cutter life is short, in the process of boringThe defect, particularly the cutter head port of export such as also very easily occur material burn, layering, burr, tear more easily causes the phenomenon such as tears,In the situation that cannot again repairing, may cause partially spent, cause great loss.

Prior art is to use the drilling on composite material parts of carbide alloy standard fluted drill, the apex point of standard fluted drillAngle is generally at 118～120 ° (i.e. drift angles of the rotary cone of this Tool in Cutting sword), and the hole coming outbreak out is of poor quality, and cutterUpper point cutter step is many, and tool wear is fast, and number of cutters causes cost high more, also very easily occurs that material burns in the process of boringWound, layering, burr, the defect such as tear and cause damage of product, especially at processing carbon fibre composite, (carbon fiber is laminatedPlate) time, the defect such as also very easily occur burr at the compound place of carbon fiber board, tear.

Utility model content

Technical problem to be solved in the utility model is to provide the more effective carbon fibre composite of one to drill and reamAperture knife tool, can avoid the problem that easily occurs material burn, layering, burr in processing, the defect such as tears effectively.

For solving the problems of the technologies described above, the technical solution of the utility model is as follows:

For a tapered bur reamer tool for carbon fibre composite, comprise operate portions and shank, described operate portions bagDraw together and be arranged at the boring operate portions of front end and the fraising operate portions of rear end, described boring operate portions comprises and is arranged at of front endOne boring operate portions, the second boring operate portions that is set in turn in rear end and the 3rd boring operate portions, the first described drillmanThe first drill point angle of doing portion is 90 °, and the second drill point angle of described the second boring operate portions is 120 °, described the first drill point angle andThe second drill point angle is respectively the drift angle of the cutting edge rotary cone of described the first boring operate portions and the second boring operate portions.

The axial length of the first described boring operate portions is 1mm.

For fiber reinforcement type composite (carbon fibre composite), except improving cutter structure and cutter material, fibre(angle between fiber direction and the Tool in Cutting sword direction of motion, embodies in cutter at the utility model dimension deflection QFor the angle between the rotary cone of cutter boring cutting edge and carbon fiber board plane, carbon fiber board composite plane), to adding working mediumAmount has a great impact. Along with the variation of Q, the fracture mechanism of fortifying fibre also change, in the time that Q approaches 90 °, the fracture of fiberMainly be subject to the impact of bending stress, approaching 0 ° or 180 ° at Q is the impact of main Tensile stress, therefore control in processingMachine direction processed angle is the importance that ensures crudy. Experiment shows, processing CFRP (carbon fibre reinforced composite,CarbonFiberReinforcedPolymer/Plastic) time, cutting force minimum when Q is 30 °, and Q be 45 ° time processingShow optimal quality, now, the defects such as layering, burr obviously reduce,

So our cutter the first drill point angle design is in 90 °, the quality that this layered, burr etc. obviously reduce holeGood, thus cutter head solved on every one deck carbon fiber composite board when perforate and the burr that easily produces of the port of export, tearEtc. defect. But the life-span of cutter is poor, because the sharper wearing and tearing of the less apex point of angle are just faster, so the first boring operate portionsIt is the second boring operate portions of 120 ° that rear end arranges the second drill point angle, so just can take into account the wear-resisting of the quality in hole and cutterProperty, the special header geometric parameter design of the utility model cutter, can well avoid carbon fibre material burn, pointLayer, burr, well increase again cutter life when the defect such as tearing.

Brief description of the drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will be to embodimentOr the accompanying drawing of required use is briefly described in description of the Prior Art, apparently, the accompanying drawing in the following describes onlyEmbodiment more of the present utility model, for those of ordinary skill in the art, in the prerequisite of not paying creative workUnder, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the structural representation of the tapered bur reamer tool of the utility model carbon fibre composite;

Fig. 2 is the partial enlarged drawing of A portion in Fig. 1;

Fig. 3 is the partial enlarged drawing of B portion in Fig. 2.

In figure:

Operate portions 1 shank 2 operate portions 101 operate portions 102 that reams of holing

The first boring operate portions 1,011 second boring operate portions 1012

First drill point angle α the second drill point angle β

The axial length L of the first boring operate portions

Detailed description of the invention

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried outDescribe clearly and completely.

Fig. 1, Fig. 2, Fig. 3 show a kind of tapered bur reamer tool for carbon fibre composite, comprise operate portions 1 and handlePortion 2, described operate portions 1 comprises and is arranged at the boring operate portions 101 of front end and the fraising operate portions 102 of rear end, described brillHole operate portions 101 comprise be arranged at front end first boring operate portions 1011, be set in turn in rear end second boring operate portions1012 and the 3rd boring operate portions, the first drill point angle α of described the first boring operate portions 1011 is 90 °, this layered, burrDeng obviously reducing the best in quality of hole, thereby solve cutter head on every one deck carbon fiber composite board when perforate and the port of exportThe burr that easily produces, the defect such as tear; The second drill point angle β of the second described boring operate portions 1012 is 120 °, thereby holds concurrentlyTurn round and look at the quality in hole and the wearability of cutter; The drill point angle of the 3rd described boring operate portions is less, completes final stage drillmanOrder, plays the transitional function that drills and reams; Described the first drill point angle α and the second drill point angle β are respectively described the first boring operate portions 1011With the drift angle of the cutting edge rotary cone of the second boring operate portions 1012, the axial length of the first described boring operate portions 1011L is 1mm, certainly also can suitably increase or reduce the axle of the first boring operate portions 1011 for the special change of rapidoprintTo length L.

The above be only detailed description of the invention of the present utility model, but protection domain of the present utility model does not limit toIn this, any be familiar with those skilled in the art the utility model disclose technical scope in, can expect easily changeOr replace, within all should being encompassed in protection domain of the present utility model. Therefore, protection domain of the present utility model should be described with powerThe protection domain that profit requires is as the criterion.

Claims

1. for a tapered bur reamer tool for carbon fibre composite, comprise operate portions and shank, it is characterized in that: describedOperate portions comprises and is arranged at the boring operate portions of front end and the fraising operate portions of rear end, and described boring operate portions comprises and being arranged atThe first boring operate portions of front end, the second boring operate portions that is set in turn in rear end and the 3rd boring operate portions, described theThe first drill point angle of one boring operate portions is 90 °, and the second drill point angle of the second described boring operate portions is 120 °, described firstDrill point angle and the second drill point angle are respectively the cutting edge rotary cone of described the first boring operate portions and the second boring operate portionsDrift angle.

2. tapered bur reamer tool as claimed in claim 1, is characterized in that: the axial length of the first described boring operate portionsFor 1mm.