CN2400206Y

CN2400206Y - Inverted-angle cutter attached to drilling bit

Info

Publication number: CN2400206Y
Application number: CN 99254849
Authority: CN
Inventors: 张新添
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-12-07
Filing date: 1999-12-07
Publication date: 2000-10-11
Anticipated expiration: 2009-12-07

Abstract

The utility model discloses a chamfer cutter attached to a drilling bit, which is mainly provided with a cutter seat and a clamping seat which are fixedly locked by screws. Cambered grooves which are arranged on the back edge sides of the cutter seat and the clamping seat are extended to the edge of a drill slot of a drill bit in a containing way to enable the chamfering cutter to be fixedly locked on the ventral side of a drill. The circular arc edge of the clamping seat and the butt joint surface of the cutter seat form line contact and form three-point steady locking force with two shaft degrees and three directions with the two cambered grooves. The cutter seat and the clamping seat are fixedly locked on one side of the abdomen of the drill, which can not affect the chip removal of the spiral drill slot, and the cutter seat and the clamping seat can be slid on the abdomen of the drill and fixedly locked on optional positions, so the utility model is suitable for drilling and chamfering jobs with different kinds of deepness.

Description

Be attached to the chamfering tool of drill bit

The utility model relates to a kind of chamfering tool, refers to a kind of chamfering tool that is attached to drill bit especially.

General bore operation can produce burr in the aperture after boring is finished, must excise the burr in aperture by rose reamer, as shown in Figure 1, this rose reamer 10 must be in the hole 11 actuating station surface chamfer operations that drilling is finished, processing in the hole 11 is stretched at the blade position of rose reamer 10, because the center in the hole 11 that drilling is finished can't correctly be located, therefore workpiece 12 is mostly being helped the free position location by processor's hand, the existence of eccentric amount e is often arranged, utilize rose reamer 10 eccentric cutting apertures, make hole 11 unbalance stress generation lateral thrust and make workpiece 12 automatic shifts, the center in hole 11 and the eccentric amount e at rose reamer 10 centers are dwindled, make the chamfering amount in aperture can be evenly, therefore the rose reamer 10 chamfering operations of commonly using have following shortcoming to exist:

1. the chamfering operation must could be carried out after boring is finished, and can't can't simplify procedure in synchronous chamfering of when boring, increases machining period and cost relatively, and efficient and competitiveness reduce relatively.

2. rose reamer 10 is easy to generate the cutter phenomenon of shaking, workpiece 12 exists with the eccentric amount e of rose reamer 10, fixation workpiece stably, must produce eccentric cutting during the rose reamer cutting, the position of aperture eccentric cutting can be subjected to the lateral thrust of rose reamer, causes the oscillation phenomenon of workpiece 12 skews, the rose reamer 10 and the eccentric amount e in hole 11 are reduced more, the oscillation phenomenon of this skew will cause the continuous cutter phenomenon of shaking, and causes fillet surface to form the wave lines, and causes the feed difficulty of chamfering.

3. feed poor stability, the point of a knife position is unsettled during rose reamer 10 cuttings, location not fully, the poor stability of cutting and also be to cause one of the reason of cutter of shaking.

Because commonly using rose reamer has considerable shortcoming in the use, therefore requiring procedure to simplify and speed is fast and the meticulous processer of cutting surface roughness requirement just seems more impracticable, therefore coming out with regard to the boring that professional usefulness is arranged and the dedicated tool of synchronous chamfering.

See also shown in Figure 2, be " boring and chamfer tool " (the Drillingand chamfering Tool) that the U.S. produced, it mainly comprises a matrix (Basic Body) 21, the containing hole 211 of this matrix 21 stretches into for drill bit 22, and it is solid by set screw 23 spiral shells, the solid disposable type blade (Insert) 24 of containing hole 211 side chains of matrix 21 ends, matrix 21 both sides relative edges are provided with bit-withdrawing slot 212.

See also shown in Figure 3, the drilling chamfer tool of this combined type is when the drilling workpiece, when finishing, boring can carry out the work of chamfering synchronously, iron filings 30 are discharged by the bit-withdrawing slot 212 of matrix 21 via helicla flute 222 ends of drill bit 22, iron filings 30 can not hindered, and chip removal is smooth and easy, can not be produced the phenomenon of the cutter that shakes when chamfering is cut by the assist location of drill bit 22, dark tool practicality, however but there is following shortcoming in the use in it:

1. cutter is costly, and 21 the bit size scopes that can use of matrix are very narrow, bit size that can only shared 1mm scope, and for example 10.1mm to 11mm could shared same matrix 21, so the quantity of matrix 21 must increase and decrease along with the number of drill bit 22 sizes; Drill bit 22 and disposable type blade 24 all need use this manufacturer's manufacturing in addition, can't use common drill bit to substitute, so the appropriate litigation fees of the set of tools are high.

2. the clip position of drill bit 22 is limited, during drill bit 22 clampings, helicla flute 222 tail ends can not hold in the containing hole 211 that stretches into matrix 21, as shown in Figure 3, iron filings 30 just are unlikely along with helicla flute 222 and enter in the containing hole 211, avoid causing the Integrated Chip problem and influence the drilling operation; Yet the hole drill of the different depths is cut and then must buy more the drill bit 22 of different length sizes during chamfering, otherwise still needs to implement the secondary chamfer machining, and therefore the hole of the different depths adds the drill bit 22 that must use different length man-hour and uses.

Aforesaid boring chamfer tool is because expense is high and the essential drill bit that uses different length during the chamfering in different depths hole, and it is to be overcome to avoid multinomial shortcoming such as Integrated Chip problem still to need, so the drilling tool of the type universalness not still.

Main purpose of the present utility model provides a kind of applicable to general drill bit, is able to the chamfering tool that is attached to drill bit of synchronous boring, chamfering and counter sink processing operation.

Another purpose of the present utility model provides a kind ofly can adjust high and low position arbitrarily, in response to the chamfering tool that is attached to drill bit of different depth bore operations.

A purpose more of the present utility model provides on a kind of brill abdomen that directly is locked in drill bit and uses synchronously, and can not hinder the chamfering tool that is attached to drill bit of the chip removal function of drill flute.

For achieving the above object, solution of the present utility model is: be attached to the chamfering tool of drill bit, comprise a tool rest and a holder, be locked in brill abdomen one side of drill bit by a screw, and can boring the abdomen slip to adjust height.

The above-mentioned chamfering tool that is attached to drill bit, tool rest wherein, be the curved arc shape, it is established one and laterally runs through for screw ccontaining counter sink, its back of the body edge face is made as circular-arc cancave cambered surface, and the limit that allows of a circular arc convergent is formed on the outer rim bottom of tool rest, and this allows the adjacent side of limit and interface form a chamfered cutting edge, the root edge of cancave cambered surface is the arc hook of arcuation in the shape of a spiral, and this arc hook hooks together on the auger groove edge of drill bit; Holder, its back of the body edge face is the cancave cambered surface of circular arc, and this holder is established one and is run through the screw corresponding with the counter sink of tool rest, and solid by the screw spiral shell, the cancave cambered surface edge of holder forms an arc hook, hooks together on the auger groove edge of drill bit.

The above-mentioned chamfering tool that is attached to drill bit, the arc hook of its tool rest are made as two arc hook parts and connect, and the interface of tool rest is established a vertically extending arc in outer ledge and reined in protrusion.

The above-mentioned chamfering tool that is attached to drill bit, its tool rest interface with allow the edge on limit establish an appearance tool rest for different disposable type blade lockings.

The above-mentioned chamfering tool that is attached to drill bit, the scotch that connects with its polyphone comprises holder and holder, and is positioned on the drill bit by a screw spiral shell is solid.

After adopting such scheme, owing to the tool rest of the chamfering tool that is attached to drill bit and the cancave cambered surface in the holder, the arc hook, arc is reined in protrusion, hold the setting of tool rest and scotch, tool rest of the present utility model and holder can very firmly be held on the brill abdomen of general drill bit, and bear sizable cutting load, and can adjust high and low position arbitrarily, drilling in response to the different depths, the drill bit of one group of applicable more size of chamfering tool uses, need not buy more too many chamfering tool, the holder that only needs the collocation different size is promptly applicable to the drill bit of other sizes, economic benefit is good and have utility function concurrently, and is applicable to the drill bit of commercially available arbitrary label pattern, and applicability is wide.

Below in conjunction with accompanying drawing specific embodiment of the utility model is described in further detail.

Fig. 1 is a chamfering operation schematic diagram of commonly using rose reamer;

Fig. 2 is for commonly using boring, chamfer tool figure;

Fig. 3 is a schematic diagram of commonly using boring, the synchronous drilling of chamfering and chamfering;

Fig. 4 is a stereogram of the present utility model;

Fig. 5 is a side view of the present utility model;

Fig. 6 is a vertical view of the present utility model;

Fig. 6 A is the three-points locking schematic diagram of tool rest and holder;

Fig. 7 is the schematic diagram that the position is adjusted in the upper and lower slippage of the utility model;

Fig. 8 adjusts the holder arc automatically and reins in schematic diagram with the tool rest contact point for the utility model is implemented on the large-size drill bit;

Fig. 9 is the schematic diagram of the utility model boring synchronously and chamfering;

Figure 10 is the enforcement illustration of disposable type blade for the utility model tool rest;

Figure 11 is the enforcement illustration of the utility model counter sink processing;

Figure 12 is the stereogram of the utility model scotch;

Figure 13 is the use illustration of the utility model scotch and chamfering tool series connection.

At first see also shown in Fig. 4,5,6, chamfering tool of the present utility model mainly comprises a tool rest 40 and a holder 50, by a screw 60 lockings; Wherein:

Tool rest 40, be the curved arc shape, an if counter sink that laterally runs through 41, ccontaining for screw 60, its back of the body edge face is made as cancave cambered surface 42, be close to drill bit, the outer ledge of the interface 43 of tool rest 40 is established a vertically extending arc and is reined in 431 protrusions, what one circular arc convergent formed on the outer rim of tool rest 40 bottom allows limit 44, this allows the limit 44 and the adjacent side of interface 43 form the chamfered cutting edge 45 of a sharp angle, and the root edge of cancave cambered surface 42 is spiral arc hooks 46, and this arc hook 46 is hooked together on helicla flute 71 edges of drill bit 70, arc hook 46 is connected by a plurality of arc hook parts 461, hooks helicla flute 71 more quietly with segmented mode;

Holder 50, its back of the body edge face is the cancave cambered surface 51 of circular arc, be close to drill bit, holder 50 is established a screw that runs through 52, corresponding with the counter sink 41 of tool rest 40, and solid by screw 60 spiral shells, it is one plane that the interface 53 of this holder 50 is, cancave cambered surface 51 edges of holder 50 are convexly equipped with an arc hook 54, to hook together on helicla flute 71 edges of drill bit 70.

See also shown in Figure 5, tool rest 40 and holder 50 are by 43,53 corresponding and collocation screw 60 lockings of two interfaces, please arrange in pairs or groups shown in the 6th figure, helicla flute 71 interior generations that the

arc hook

46,54 of tool rest 40 and holder 50 holds brill abdomen 72 both sides of stretching into drill bit 70 respectively hook together, when screw 60 as yet not during packing, tool rest 40 and holder 50 lean in bore abdomen 72 in the shape of a spiral shape move up and down, as shown in Figure 7, the position of rose reamer be can change, the degree of depth of drill bit 70 borings and the position of chamfering adjusted.

See also shown in Figure 6, tool rest 40 is solid when drill bit 70 with holder 50 combination spiral shells, the interface 531 of holder 50 is reined in 431 butts with the arc of tool rest 40, form the line contact condition, and the arc hook 46 of tool rest 40 and

holder

50,54 are hooking together the edge of helicla flute 71 respectively, form three fulcrums (as the stain position) by the drawing sight, rein in 53 formation of interface, one gap of the interface 43 and the holder 50 of 431 sides at arc, when screw 60 packings, can produce the effect (as shown in Figure 6A) of elasticity packing, promptly form the clamping of lever of the third order mode, fastening force is good, and is 3 strong fix packing.

Brill abdomen 72 width of drill bit 70 can change to some extent because of the size of drill bit 70, but it is little with the locking influence of holder 50 to tool rest 40, as shown in Figure 8, tool rest 40 is to rein in 431 with arc to contact with the interface 53 of holder 50, broaden when boring abdomen 72, when the tapered end size strengthens, holder 50 is relative with the spacing of tool rest 40 to be increased, and the angle of holder 50 and tool rest 40 will slightly increase, and change tool rest 40 arcs automatically and rein in 431 contact point, circular-arc arc is reined in 431 and is adjusted contact point automatically, can't influence the locking condition of tool rest 40 and holder 50, still be 3 clamping modes, therefore the suitable bit size of the utility model can relax the scope to 5mm, as the drill bit in 10mm to the 15mm scope 70 can be shared same group of tool rest 40 and holder 50, and tool rest 40 is fixing size and shape, the drill bit of different range can select another group holder 50 to use, therefore the holders 50 of group used in response to the drill bit of different size scope more than tool rest 40 of the present utility model can be arranged in pairs or groups, required appropriate litigation fees is cheap, the bit size scope that is suitable for is wider, has practicality and economic benefit concurrently.

See also Fig. 4, the arc hook 46 of this tool rest 40 is designed in response to the helicla flute 71 of drill bit 70, this tool rest 40 can move in response to the boring depth and change the position, and when change locks drill bit in the bit size scope that is suitable for, therefore arc hook 46 also can slightly change the contact position with helicla flute 72, and the arc hook 46 that will grow be designed to two arc hook parts 461, forms 2 hooks helicla flute 71 that fastens, with three clampings of holder 50, produce more stable clamping strength than short arc hook 54 formation three directions.

See also shown in Figure 9, when drill bit 70 drilling workpiece 12 are finished, the blade 45 of tool rest 40 is the end face of cutting hole synchronously, carry out the operation of chamfering, or this blade 45 is replaced into the counter sink cutter as shown in figure 11, get final product the drilling counter sink, the positioning function that this chamfering tool produces in hole 11 by drill bit 70, drill bit 70 can not produce the situation of rocking, and chamfering tool more can not produce the force phenomenon that shakes, the chamfering cutting is very smooth and easy and quick, and the chamfering operation is stable in the extreme.

See also shown in Figure 10, tool rest 40 of the present utility model also can be made as the structure applications of disposable type blade, in interface 43 with allow the edge on limit 44 establish one to hold tool rest 54, this holds tool rest 54 and can lock for the disposable type blade 80 that different angles tilt, with the enforcement in response to different chamfer angles, and the application of disposable type blade 80 only needs to change disposable type blade 80 behind the blade abrasion except that the use that can change the different angles blade, tool rest 40 still can use, and makes the consumption of tool rest 40 more economical.

Tool rest 40 is brill abdomen 72 sides that are positioned at drill bit 70 with holder 50, and having only two

arc hooks

46,54 to hold stretches in the spiral helicine helicla flute 71, can't influence the chip removal function of helicla flute 71, chip removal is smooth and easy, no matter be that to be positioned at any height all be to be positioned at the side of boring abdomen 72, can not stop the chip removal function of helicla flute 71.

See also shown in Figure 12ly, the utility model adds the embodiment in the scotch 90, and it has locking force that increases chamfering tool and the function that produces the location; This scotch 90 comprises holder 91 and holder 92, and and be positioned on the drill bit by a screw 93 spiral shells are solid; Wherein:

Holder 91 is established a screw that runs through 911, and is corresponding with the counter sink 921 of holder 92, and it is one plane that the interface 912 of this holder 91 is, and cancave cambered surface 915 edges of holder 91 are convexly equipped with an arc hook 916, to hook together on helicla flute 71 edges of drill bit 70;

Holder 92, it establishes a counter sink that laterally runs through 921, ccontaining for screw 93, its back of the body edge face is made as cancave cambered surface 922, be close to drill bit, the interface 923 of this holder 92 is established a vertically extending arc and is reined in 924 protrusions at the edge, the spiral arc hook 925 of the root edge of this cancave cambered surface 922, this arc hook 925 hooks together on helicla flute 71 edges of drill bit 70, this arc hook 925 is connected by two arc hook parts 926, more firmly hook helicla flute 71 with segmented mode, and contact clamping with arc hook 916 3 of the formation of holder 91.

See also shown in Figure 13, locating piece 90 spiral shells that holder 91 and holder 92 are formed are solid above chamfering tool, being the mode of piling up is cascaded, make rose reamer at the cutting cutting stress that cutter bears that the time can double, therefore chamfering tool adds man-hour at the counter sink of implementing heavy cut, chamfering tool can not produce showing of slippage, in addition, during the tool rest 40 that must more renew when blade 45 wearing and tearing of chamfering tool, pine is unloaded the below that directly is serially connected in locating piece 90 behind the tool rest 40 that rose reamer more renews, be the correct position of rose reamer, need not to reorientate again, make chamfering tool displacement very fast and accurate positioning high, more can not influence the chip removal function of helicla flute 71.

Claims

1. be attached to the chamfering tool of drill bit, it is characterized in that: comprise a tool rest and a holder, be locked in brill abdomen one side of drill bit by a screw, and can boring the abdomen slip.

2. the chamfering tool that is attached to drill bit as claimed in claim 1 is characterized in that:

Tool rest, be the curved arc shape, it is established one and laterally runs through for screw ccontaining counter sink, its back of the body edge face is made as circular-arc cancave cambered surface, the limit that allows of one circular arc convergent is formed on the outer rim bottom of tool rest, this allows the adjacent side of limit and interface form a chamfered cutting edge, and the root edge of cancave cambered surface is the arc hook of arcuation in the shape of a spiral, and this arc hook hooks together on the auger groove edge of drill bit;

Holder, its back of the body edge face is the cancave cambered surface of circular arc, and this holder is established one and is run through the screw corresponding with the counter sink of tool rest, and solid by the screw spiral shell, the cancave cambered surface edge of holder forms an arc hook, hooks together on the auger groove edge of drill bit.

3. the chamfering tool that is attached to drill bit as claimed in claim 1 or 2 is characterized in that: the arc hook of tool rest is made as two arc hook parts and connects.

4. the chamfering tool that is attached to drill bit as claimed in claim 1 or 2 is characterized in that: the interface of tool rest is established a vertically extending arc in outer ledge and is reined in protrusion.

5. as claim 1, the 2 or 3 described chamfering tools that are attached to drill bit, it is characterized in that: tool rest interface with allow the edge on limit establish an appearance tool rest for different disposable type blade lockings.

6. the chamfering tool that is attached to drill bit as claimed in claim 1 is characterized in that: the scotch that connects with the chamfering tool polyphone comprises holder and holder, and is positioned on the drill bit by a screw spiral shell is solid.