CN201201067Y

CN201201067Y - Combined drill and reamer

Info

Publication number: CN201201067Y
Application number: CNU2008200986186U
Authority: CN
Inventors: 杜柳青; 何华仙; 武晓乐; 殷驰; 黄志明; 杨艳飞
Original assignee: Chongqing Institute of Technology
Current assignee: Chongqing Institute of Technology
Priority date: 2008-06-20
Filing date: 2008-06-20
Publication date: 2009-03-04
Anticipated expiration: 2018-06-20

Abstract

The utility model discloses a drilling-reaming compound tool, which comprises a tool bit, tool necks and a tool holder, wherein the tool bit is formed by compounding a drill bit and a reamer which are provided with the tool necks respectively; the tool neck of the drill bit and the forepart of the reamer are welded together through a speed changing segment; and the tool neck of the reamer and the tool neck on the forepart of the tool holder are welded together. The compound tool has the following advantages that: 1. two different types of tools are compounded together, which reasonably concentrates two separate working procedures, cuts down the number of working procedures, simplifies process, leaves out the time of clamping and changing tools, and improves production efficiency; 2. the compound tool is favorable for ensuring the coaxiality of hole machining at two times and is easier to adjust and set the tool, thereby obviously improving machining accuracy; and 3. the compound tool saves a set of special machine toll and a special fixture, shortens production line, and simplifies equipment design, thereby improving the reliability of automatic control at the same time when saving equipment purchase cost.

Description

A kind of drill reamer

Technical field

The utility model relates to machining tool, specifically refers to the compound tool of a kind of compound drill bit and reamer, belongs to the cutting-tool engineering field.

Background technology

What the vehicle gas cylinder hickey adopted is special-purpose taper pipe thread, and requirement on machining accuracy is very high.Mach operation is divided into planar end surface, turning, brill bottom outlet, hinge taper hole, chamfering, tapping etc., work flow was long when the dispersion of operation made machining large workpiece (vehicle gas cylinder), and workpiece is difficult to carrying, and process equipment quantity is many, working (machining) efficiency is low, the processing cost height.When transfer matic is produced, realize that full-automatic difficulty strengthens.Existing most of vehicle gas cylinder hickey processor generally still adopts operation to disperse and the processing mode of multiple clamping, production automation degree and working (machining) efficiency are all very low, precision is difficult to guarantee that working (machining) efficiency and processing cost all make product market competitiveness greatly reduce.The development of following vehicle gas cylinder hickey automatic assembly line will make the relative operation of machined concentrate, and adopts special-purpose building-block machine, and therefore adopting compound tool processing will be good processing scheme.

Existing boring, hinge taper hole operation all are to carry out respectively, boring earlier, and back hinge taper hole, twice clamping changed cutter twice, and the main deficiency of its existence has: 1, production efficiency is low, needs twice clamping, changes cutter twice, and workload is big, and is consuming time; 2, machining accuracy is poor, is unfavorable for guaranteeing the axiality of twice hole processing; 3, equipment has high input, and needs two special purpose machine tools and two cover special fixtures, and production line is tediously long.And because the compound aperture knife tool of inhomogeneity cutter all compares difficulty in design and manufacture view, and the cutting data of different cutters is also different, so this compound tool design is not arranged at present as yet, remains respectively and processes separately with different cutters.

The utility model content

At the prior art above shortcomings, the purpose of this utility model provide a kind of production efficiency height, machining accuracy height, can saving equipment input the compound tool that drill bit and reamer are combined with each other.

The technical solution of the utility model is achieved in that a kind of drill reamer, comprise cutter head, cutter neck and handle of a knife, it is characterized in that: described cutter head is composited by drill bit that has the cutter neck respectively and reamer, the cutter neck and the reamer front portion of drill bit are welded as a whole by the throw-over section, and the cutter neck of reamer and the cutter neck of handle of a knife front portion (this cutter neck is whole the cutter neck of cutter) are welded as a whole.

Opening the trapezoidal chip dividing groove that spiral distributes on the described reamer cutter tooth.

Described drill bit is a fluted drill.

The utility model is simple in structure, and compared to existing technology, it has following beneficial effect:

1, two kinds of dissimilar cutters are combined with each other, and the operation that twice are disperseed is rationally concentrated, and have shortened the operation number, simplify flow process, have save the clamping tool change time, have improved production efficiency.

2, help guaranteeing the axiality of twice hole processing, it is also easy than imitating to adjust tool setting, so can obviously improve machining accuracy.

3, not only save a cover special purpose machine tool and a special fixture, and shortened production line, simplified the equipment design, therefore when saving the equipment purchase cost, improved the reliability of automation control.

It is convenient that the utility model is changed sharpening, and in high efficiency, high accuracy processing occasion is with a wide range of applications, and also provides a kind of new processing scheme for other workpiece processing taper hole simultaneously.

Description of drawings

Fig. 1-the utility model structural representation;

Fig. 2-drill bit left view;

Fig. 3-reamer basal plane cross sectional view.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Referring to Fig. 1, from the figure as can be seen, drill reamer of the present utility model, comprise cutter head, cutter neck 6 and handle of a knife 7, described cutter head is composited by drill bit 1 and reamer 4, drill bit 1 and reamer 4 all have cutter neck separately, and the cutter neck 2 and the reamer front portion of drill bit are welded as a whole by throw-over section 3, and the cutter neck 5 of reamer is welded as a whole with the cutter neck 6 (this cutter neck is whole the cutter neck of cutter) of handle of a knife front portion.The welding of two places all requires firm welding, guarantees axiality 0.01mm.Handle of a knife adopts No. 3 taper shanks of Mohs of national standard, and material is 40Cr, the HRC30 that hardens-45.

See Fig. 3, described reamer 4 is a roughing reamer, and material is high speed steel W 18Cr4V, the HRC63 that hardens-66.During the hinge conical bore, because cutting output is big, the toolsmith makes comparisons heavy, is opening the trapezoidal chip dividing groove 8 that distributes by right-hand screw on the cutter tooth, is convenient to chip removal.

Described drill bit is the fluted drill GB1478-78 of national standard model, sees Fig. 1 and Fig. 2.

During work, No. 3 handle of a knifes of Mohs are directly installed with machine tool chief axis and are cooperated, the big cutting output fluted drill of higher rotation speed cut before this, when round tube hole machines, enter the throw-over stage, lathe is prepared for thick hinge at the amount of feeding of the less rotating speed of big welding throw-over section conversion, then slightly cuts with scissors taper hole, carries out withdrawing with the thick hinge speed of mainshaft at last.

The utility model aims at needs boring simultaneously, slightly cut with scissors taper hole two procedures Compound Machining and design, and is fit to any such occasion.

Claims

1, a kind of drill reamer, comprise cutter head, cutter neck (6) and handle of a knife (7), it is characterized in that: described cutter head is composited by drill bit that has the cutter neck respectively (1) and reamer (4), the cutter neck (2) of drill bit and reamer (4) are anterior to be welded as a whole by throw-over section (3), and the cutter neck (5) of reamer is welded as a whole with the cutter neck (6) of handle of a knife front portion.

2, drill reamer according to claim 1 is characterized in that: opening the trapezoidal chip dividing groove (8) that spiral distributes on the described reamer cutter tooth.

3, drill reamer according to claim 1 and 2 is characterized in that: described drill bit (1) is a fluted drill.