CN201693220U

CN201693220U - Annular drill cutter

Info

Publication number: CN201693220U
Application number: CN2010201451072U
Authority: CN
Inventors: 朱红梅; 朱冬伟
Original assignee: ZHEJIANG XINXING TOOL CO Ltd
Current assignee: ZHEJIANG XINXING TOOL CO Ltd
Priority date: 2010-03-30
Filing date: 2010-03-30
Publication date: 2011-01-05
Anticipated expiration: 2020-03-30

Abstract

The utility model relates to an annular drill cutter, which is mainly applicable to processing fiber reinforced composite materials. The annular drill cutter is characterized in that a cutter bit is fixed with a hilt, the annular drill cutter comprises at least two cutting edges, each cutting edge is provided with a cutting point and comprises an outer side edge, an inner side edge and a transition edge, wherein the outer side edge is connected with an outer circle of the cutting edge, the inner side edge is connected with an inner bore of the cutter bit, the transition edge is located between the outer side edge and the inner side edge and connected with the outer side edge and the inner side edge, the largest distance from the cutting points on the outer side edges of the cutting edges to the end of the hilt is larger than the distance from an optional cutting point on the inner side edges or the transition edges to the end of the hilt, the amount of chip grooves is identical to that of the cutting edges, and the chip grooves and the cutting edges are distributed at intervals. The annular drill cutter is reasonable in structural design, reduces cutting resistance and increases production efficiency, and then the service life of the annular drill cutter is prolonged.

Description

Annular drilling tool

Technical field

The utility model relates to a kind of cutter, particularly a kind of annular drilling tool, and it mainly is applicable to machining fiber reinforced composite material, belongs to drilling type cutter.

Background technology

Present fibre reinforced composites use more and more, and the drill bit of diamond fluted drill type is generally adopted in the processing of fibre reinforced composites, and its cutting resistance is big, and cutter life is short; Come out and the cutter of this application specific architecture is still untapped.

China Patent No. 2007201836618 discloses the utility model patent that a kind of name is called " annular bit ", its cutter hub is provided with some groups of clamped cutting bit sheet groups, each clamped cutting bit sheet group comprises the clamped cutting bit sheet of two symmetries, be provided with the drilling cuttings passage in the middle of the cutter hub, and cutter head is interchangeable; But this patent is limited by its cutter head structure, is not suitable for machining fiber reinforced composite material.

China Patent No. 942233298 discloses the utility model patent that a kind of name is called " a kind of monoblock type diamond thin-wall drill bit ", it is made up of conical screw joint, drill body and annular bit tooth, has the oblique effluent trough of sawtooth on the annular bit tooth, but the drill bit of this structure only is suitable for to have in pipeline and installs and wall boring, is not suitable for machining fiber reinforced composite material.

China Patent No. 2003801073387 discloses the patent that a kind of name is called " drill bit assembly ", and it comprises lead bit and annular bit, but the drill bit of this structure only is applicable to drilling rig, is not suitable for machining fiber reinforced composite material.

The utility model content

Technical problem to be solved in the utility model is to overcome existing above-mentioned shortcoming in the prior art, and provides a kind of reasonable in design simple, longer service life and can reduce the annular drilling tool of drilling fibre reinforced composites cutting resistance.

The technical scheme in the invention for solving the above technical problem is: this annular drilling tool comprises cutter head and handle of a knife, has endoporus and have cutting edge on cutter head, also has chip area on the cutter head, and cutter head is annular, and its architectural feature is:

Described cutter head and handle of a knife are fixed;

Described cutting edge all has a cutting point at least more than two on each cutting edge, comprise outside cutting edge, inboard cutting edge and transition cutting edge on each cutting edge, outside cutting edge wherein and the handing-over of the cylindrical of cutting edge, the endoporus handing-over of inboard cutting edge and cutter head; The transition cutting edge and joins with outside cutting edge and inboard cutting edge between outside cutting edge and inboard cutting edge;

Cutting point on the outside cutting edge of described cutting edge to the ultimate range of handle of a knife end greater than inboard cutting edge or the transition cutting edge distance of meaning cutting point of taking up an official post to the handle of a knife end;

The quantity of described chip area is identical with the quantity of cutting edge, and chip area and cutting edge are spaced apart.

Above technical characterictic has guaranteed that the utility model can be applicable to machining fiber reinforced composite material.

As preferably, described chip area axially is provided with, and this chip area is the recess channels that is arranged on the cutter head cylindrical; To make things convenient for chip removal.

As preferably, on the outside cutting edge of described cutting edge a chamfering is arranged; Play the purpose of protection cutting edge.

As preferably, the inner hole wall of described chip area and cutter head does not connect; Make the intensity of product higher.

As preferably, the inner hole wall of described chip area and cutter head connects; The space of chip removal will be greatly thus.

As preferably, the chamfering length on the cutting edge of the described outside is 0.05～0.5mm, and the angle between chamfering and the horizontal plane is 40 °-50 °; Play the purpose of not only protecting cutting edge but also not reducing intensity.

As preferably, described cutting edge is with a kind of the making in carbide alloy and the diamond, and is fixed together by welding and described cutter head; Improve the intensity and the wearability of cutter head thus, increased service life.

The utility model compared with prior art has the following advantages and effect:

1, reasonable in design, simple, be applicable to machining fiber reinforced composite material.2, adopt the annular bit drilling, and the cutting point that is arranged in outside cutting edge to the distance of handle of a knife greater than inboard cutting edge and any cutting point of transition cutting edge distance to shank, when drilling, play the effect that the cylindrical sidewall of holing cuts off fibr tissue earlier, improve the quality in hole, and drilling is to adopt the ring-type drilling, significantly reduced the cutting resistance of drilling fibre reinforced composites, the service life of having improved production efficiency and cutter; And be provided with corresponding chip area with the corresponding cylindrical of cutting edge, play the purpose that makes things convenient for scrap fallaway.3, the outside cutting edge of cutting edge is provided with chamfering, improves point of a knife intensity and increases service life.

Description of drawings

The structural representation that Fig. 1 does not connect for the utility model chip area.

Fig. 2 is the right TV structure schematic diagram of Fig. 1.

Fig. 3 is the C-C structural profile schematic diagram among Fig. 1.

Fig. 4 analyses and observe enlarged diagram for the A-A cutter head structure among Fig. 2.

The structural representation that Fig. 5 connects for the utility model chip area.

Fig. 6 is the right TV structure schematic diagram of Fig. 5.

Fig. 7 is the D-D structural profile schematic diagram among Fig. 5.

Fig. 8 analyses and observe enlarged diagram for the B-B cutter head structure among Fig. 6.

The specific embodiment

Embodiment 1:

Referring to Fig. 1-Fig. 4, this is the embodiment that the utility model chip area does not connect.

Present embodiment is made up of cutter head 2 and handle of a knife 1, has chip area 4 on the cutter head 2, and has cutting edge 3, and the center of cutter head 2 has cutter head endoporus 22; And cutter head 2 be shaped as annular, this annular is meant that the outline of cutter head 2 is an annular.

Cutter head 2 of the present utility model and handle of a knife 1 are fixing; Cutting edge 3 is at least more than two, and comparatively suitable scope is three～eight, and cutting edge 3 is four in the present embodiment, and a cutting point 311 is all arranged on each cutting edge 3, comprises outside cutting edge 31, inboard cutting edge 33 and transition cutting edge 32 on each cutting edge 3; Outside cutting edge 31 wherein and 23 handing-over of the cylindrical of cutting edge 3, inboard cutting edge 33 joins with the cutter head endoporus 22 of cutter head 2; Transition cutting edge 32 and joins with outside cutting edge 31 and inboard cutting edge 33 between outside cutting edge 31 and inboard cutting edge 33; Cutting point 311 on the outside cutting edge 31 of cutting edge 3 to the ultimate range H of handle of a knife 1 end greater than on inboard cutting edge 33 or the transition cutting edge 32 arbitrarily cutting point to the distance of handle of a knife 1 end, such as the cutting point on the inboard cutting edge 33 to the distance h of handle of a knife 1 end just less than H.

The outside of the present utility model cutting edge 31, inboard cutting edge 33 and transition cutting edge 32 can be selected arc or linear as required.In the present embodiment, transition cutting edge 32 is an arc, and outside cutting edge 31 and inboard cutting edge 33 are linear.Wherein, the length of outside cutting edge 31 is 0.7mm, and the length of inboard cutting edge 33 is 1.6mm, and the arc length of transition cutting edge 32 is 0.5mm.

The quantity of the utility model chip area 4 is identical with the quantity of cutting edge 3, is four in the present embodiment, and chip area 4 is spaced apart with cutting edge 3.

Chip area 4 of the present utility model axially is provided with, and this chip area 4 is for being arranged on the recess channels on cutter head 2 cylindricals; Here said axial setting is meant that the angle between chip area 4 and cutter head 2 center lines is an acute angle.

A kind of making in cutting edge 3 usefulness carbide alloy described in the utility model and the diamond, and be fixed together with cutter head 2 by welding, cutting edge 3 usefulness carbide alloy are made in the present embodiment; Cutting edge 3 can also carry out surface treatment or coating, to improve anti-wear performance of the present utility model.Whole cutter can be made with high-speed steel.

Chip area 4 of the present utility model can adopt linear or crooked shape structure.

On the outside cutting edge 31 of the utility model cutting edge 3 chamfering can be arranged.

During use, the utility model can be installed on the equipment such as all kinds of equipment or drilling machine, be used for the hole processing of fibre reinforced composites.Because cutting edge 3 is a hollow structure, the intermediate portion does not participate in cutting, and 3 of cutting edges are done the ring-type cutting, and promptly the end face of cutter head 2 is a main cutting face, has reduced the stressed of cutter with this; Just outside cutting edge 31, inboard

cutting edge

33 and 32 work of transition cutting edge during use, and by chip area 4 discharge smear metals.

In addition, can also in cutter head endoporus 22 detent mechanism be set, the form location of top or fluted drill is adopted in the end of detent mechanism, moves radially when avoiding cutting, and improves the precision of hole processing.

Alleged herein chip area 4 does not connect and is meant: chip area 4 does not connect with the inner hole wall of cutter head 2, sees Fig. 3.

Embodiment 2:

Referring to Fig. 5-Fig. 8, this is the embodiment that the utility model chip area connects.

In the present embodiment, a chamfering 5 is arranged on the outside cutting edge 31 of cutting edge 3, the length d of this chamfering 5 is 0.05～0.5mm, is 0.4mm in the present embodiment; Angle α between chamfering 5 and the horizontal plane is 40 °-50 °, is 45 ° in the present embodiment.

In the present embodiment, transition cutting edge 32, outside cutting edge 31 and inboard cutting edge 33 are arc.Wherein: the arc length of outside cutting edge 31 is 0.7mm, and the arc length of inboard cutting edge 33 is 0.5mm, and the arc length of transition cutting edge 32 is 1.4mm.

In the present embodiment, the chip removal space of chip area 4 will be greatly, but the intensity of product can reduce.All the other structures and embodiment 1 are identical or be equal to, and no longer repeat.

Here alleged chip area 4 connects and is meant: chip area 4 connects with the inner hole wall of cutter head 2, sees Fig. 7.

As long as specific embodiment described in this specification undeclared concrete size, then can be the virtually any size that adapts with its structure; Simultaneously, the part name of being got also can be different.Allly conceive equivalence or the simple change that described structure, feature and principle are done, be included in the protection domain of the utility model patent according to the utility model.

Claims

1. an annular drilling tool comprises cutter head and handle of a knife, has endoporus and have cutting edge on cutter head, also has chip area on the cutter head, and cutter head is annular, it is characterized in that:

1) described cutter head and handle of a knife are fixed;

2) described cutting edge all has a cutting point at least more than two on each cutting edge, comprises outside cutting edge, inboard cutting edge and transition cutting edge on each cutting edge, outside cutting edge wherein and the handing-over of the cylindrical of cutter head, the endoporus handing-over of inboard cutting edge and cutter head; The transition cutting edge and joins with outside cutting edge and inboard cutting edge between outside cutting edge and inboard cutting edge;

3) cutting point on the outside cutting edge of described cutting edge to the ultimate range of handle of a knife end greater than inboard cutting edge or the transition cutting edge distance of meaning cutting point of taking up an official post to the handle of a knife end;

4) quantity of described chip area is identical with the quantity of cutting edge, and chip area and cutting edge are spaced apart.

2. annular drilling tool according to claim 1 is characterized in that: described chip area axially is provided with, and this chip area is the recess channels that is arranged on the cutter head cylindrical.

3. annular drilling tool according to claim 1 and 2 is characterized in that: on the outside cutting edge of described cutting edge a chamfering is arranged.

4. annular drilling tool according to claim 3 is characterized in that: the inner hole wall of described chip area and cutter head does not connect.

5. annular drilling tool according to claim 3 is characterized in that: the inner hole wall of described chip area and cutter head connects.

6. annular drilling tool according to claim 3 is characterized in that: the chamfering length on the cutting edge of the described outside is 0.05-0.5mm, and the angle between chamfering and the horizontal plane is 40 °-50 °.

7. annular drilling tool according to claim 1 and 2 is characterized in that: described cutting edge is with a kind of the making in carbide alloy and the diamond, and is fixed together by welding and described cutter head.