CN208427767U

CN208427767U - A kind of aperture perforation cutter

Info

Publication number: CN208427767U
Application number: CN201820835544.3U
Authority: CN
Inventors: 汤利文
Original assignee: Shanghai No1 Fine Molding Co Ltd
Current assignee: Shanghai No1 Fine Molding Co Ltd
Priority date: 2018-05-31
Filing date: 2018-05-31
Publication date: 2019-01-25
Anticipated expiration: 2028-05-31

Abstract

The utility model provides a kind of aperture perforation cutter, the cutter hub including cylindrical type, and the cutter head portion of described cutter hub one end is arranged in, and the cutter head portion includes the blade at the top of the head body and the head body of cylinder type.The blade has symmetrical two the first knife faces and symmetrical two the second knife faces, and first knife face and second knife face are plane, and is spaced symmetrical.The maximum width D on the top of the blade₂Equal to the outlet diameter Φ of the cast gate.The aperture of the utility model penetrates through cutter, significantly improves the processing efficiency of cast gate, reduces production cost.Meanwhile the notch of the cast gate of formation is sharp, inner surface is smooth, hence it is evident that more high-quality than the cast gate that electro-discharge machining obtains.

Description

A kind of aperture perforation cutter

Technical field

The utility model belongs to cutting-tool engineering field, specifically, being to penetrate through cutter about a kind of aperture

Background technique

In the prior art, the machining pouring gate on injection mould product, generallys use electro-discharge machining mode, however electro-discharge machining is deposited In following technological deficiency:

(1), the electrode of pre-production gate shape is needed, then carries out electro-discharge machining again, therefore, total process time It is long.

(2), cast gate rough inner surface, notch is not sharp, and burr is more, it is also necessary to polish burr with grinding machine, cause to handle Process increases, and process time extends, and processing efficiency is low, and production cost reduces.

Therefore, it is necessary to a kind of novel cast gate processing method be researched and developed, to overcome above-mentioned technological deficiency in the prior art.

Utility model content

The inventor of the utility model passes through long-term practical experience, has invented a kind of novel cast gate processing method: Using the tool sharpening cast gate ground on milling machine, processing efficiency is significantly improved, production cost is reduced.

The purpose of this utility model is to provide a kind of apertures to penetrate through cutter, to improve processing efficiency, reduces processing cost, And improve processing quality.

To achieve the above object, the utility model uses following technical scheme:

A kind of aperture perforation cutter, the cutter hub including cylindrical type, and the cutter head portion of described cutter hub one end, the knife are set Head includes the blade at the top of the head body and the head body of cylinder type；

The blade has symmetrical two the first knife faces and symmetrical two the second knife faces, first knife face and described Second knife face is plane, and is spaced symmetrical；

The maximum width D on the top of the blade₂Equal to the outlet diameter Φ of the cast gate.

According to the utility model, the diameter of the head body is less than the diameter of the cutter hub.

According to the utility model, with the interconnecting piece of cone type between the cutter hub and the cutter head portion.

According to the utility model, the diameter of the head body is less than the maximum width D₂。

Angle theta according to the utility model, between two first knife faces₄For 10-160 degree；Two second knives Angle theta between face₅For 60-160 degree.

Further, the angle theta₄For 20-120 degree.

Further, the angle theta₅For 90-150 degree.

Compared with prior art, the utility model has following advantageous effects:

The aperture of the utility model penetrates through cutter, can be used for processing injection mould cast gate on milling machine.Due to not using electric discharge Processing method, there is no need to the electrodes of pre-production gate shape, so that process time shorten to the half of electro-discharge machining, significantly Processing efficiency is improved, production cost is reduced.

Meanwhile it is sharp using the notch of the cast gate of the aperture of the utility model perforation tool sharpening, inner surface is smooth, bright It is aobvious more high-quality than the cast gate that electro-discharge machining obtains.

The aperture of the utility model penetrates through cutter, it can also be used to the opening in hole on product.

Detailed description of the invention

Fig. 1 is the structural schematic diagram that processed product is splitted along the cast gate plane of symmetry.

Fig. 2 is the main view of the perforating cutter of one embodiment.

Fig. 3 is the main view enlarged drawing in the cutter head portion of Fig. 2.

Fig. 4 is the top view of the perforating cutter of the utility model.

Fig. 5 is the left view enlarged drawing in the cutter head portion of one embodiment.

Fig. 6 is that the aperture of second embodiment penetrates through the main view of cutter.

Fig. 7 is the main view enlarged drawing in the cutter head portion of Fig. 6.

Fig. 8 is the left view enlarged drawing in the cutter head portion of second embodiment.

Fig. 9 is that processed product is mounted on jig, with the schematic diagram of the tool sharpening cast gate of the utility model, in figure, There are relational expressions: alpha+beta=90 degree at the angle α of the cast gate at the angle β and processed product of jig.

In figure: (1,3)-cutter hub, (2,4)-cutter head portion, 5- processed product, 6- jig, 21- tapered tip, 22- chip removal Slot, 23- blade, 211- protrusion, 221- rake face, 231- flank, the bottom surface 222-, another side 223-, the head 41- master Body, 42- blade, 43- interconnecting piece, the first knife face of 421- 421, the second knife face of 422-

Specific embodiment

With reference to the accompanying drawing, the technical solution of the utility model is described in further detail with specific embodiment.It answers Understand, following embodiment is merely to illustrate the utility model not for restriction the scope of the utility model.

As shown in Figures 2 to 5, one embodiment of the utility model provides a kind of perforating cutter, including cylindrical type Cutter hub 1, and the cutter head portion 2 of described 1 one end of cutter hub is set, the cutter head portion 2 is symmetrical structure, has tapered tip 21, institute It states and symmetrically opens up two chip spaces 22 in tapered tip 21, the tapered tip 21 between two chip spaces 22 is blade 23, The chip space 22 extends downward into the upper end of the cutter hub 1.

There are two side, one of side is vertically arranged the tool of chip space 22, is rake face 221, before two described Knife face 221 is symmetrical arranged；The rake face 221 is vertically arranged, being capable of effective guarantee machining accuracy.The lateral surface of the blade 23 For flank 231.The angle after tangent line intersection in two 231 symmetric positions of flank is θ₂。

The perforating cutter of the utility model is used for when processing injection mould cast gate on milling machine, due to not using electro-discharge machining Method, there is no need to the electrodes of pre-production gate shape to significantly improve so that process time shorten to the half of electro-discharge machining Processing efficiency reduces production cost.Meanwhile, interior table sharp using the notch of the cast gate of the tool sharpening of the utility model Face is smooth, hence it is evident that more high-quality than the cast gate that electro-discharge machining obtains.

Further, the bottom surface 222 of the chip space is horizontal.

According to the utility model, another side 223 of the chip space 22 opposite with the rake face 221 is also vertical Setting, so that the rake face 221 of the same chip space 22 and the angle of another side 223 are 90 in Fig. 4 Degree.

According to the utility model, the θ₂It is 20~60 degree.

Further, the θ₂It is 30~50 degree.

According to the utility model, the top center of the tapered tip 21 has protrusion 211.

According to the utility model, the two sides of the protrusion 211 are symmetrical, form angle theta₃。θ₃Setting for process when Prevent cracking of cutter.

Further, the θ₃It is 60~150 degree.

According to the utility model, the maximum width D on the top of two blades 23₁Than the outlet diameter Φ of the cast gate It is slightly smaller.When being used for machining pouring gate, it is ensured that the cutter head portion 2 can drill from the top surface of the processed product 3, until The side of the processed product 3 starts to expand, but does not penetrate through.

Further, the maximum width D₁It is the 90%~98% of Φ.

Further, the maximum width D₁It is the 95%~98% of Φ.

As shown in figures 1 and 3, the θ₂With the θ₁Numerical value is equal.

According to the utility model, the perforating cutter of the utility model, using A1, AF1 or AFU steel, in hard material Machining pouring gate on material, or the demanding smart hole of machining tolerance on softwood.

Also common cutter material can be used to prepare the cutter of the utility model, the processing for the hole that commercial tolerance requires.

When being used for machining pouring gate, the preparation method of the perforating cutter of the utility model:

1) it selects the cylindrical rod of A1, AF1 or AFU steel as cutter hub 1, first opens chip space 22 in one end of cutter hub 1, then The cutter hub 1 for holding chip space 22 successfully is clipped on knife sharpener, knife sharpener is pulled to θ₂1/2 angle, then ground, so that two The angle after tangent line intersection in 231 symmetric position of flank is θ₂。

2) top for grinding two blades 23 in the cutter head portion 2, processes the protrusion 211, so that maximum Width D₁To design width.

3) by knife sharpener pull to θ₃Identical angle grinds the two sides of the protrusion 211 symmetrically, so that two sides Angle between face is θ₃。

As shown in Figure 6 to 8, second embodiment of the utility model provides a kind of aperture perforation cutter, the aperture Perforation cutter includes the cutter hub 3 of cylindrical type, and the cutter head portion 4 of described 3 one end of cutter hub is arranged in, and the cutter head portion 4 includes cylinder The blade 42 at 41 top of head body 41 and the head body of figure.

The blade 42 has symmetrical two the first knife faces 421 and symmetrical two the second knife faces 422, first knife Face 421 and second knife face 422 are plane, and are spaced symmetrical.

The maximum width D on the top of the blade 42₂Equal to the outlet diameter Φ of the cast gate.

The aperture of the utility model penetrates through cutter, is used for when processing injection mould cast gate on milling machine, when using first reality The injection mould perforating cutter for applying example carries out roughing with after finishing to milling machine, penetrates through cutter one using the aperture of the utility model Knife can realize the perforation of cast gate.

It is therefore not necessary to the electrode of pre-production gate shape, process time is the half of electro-discharge machining, significantly improves life Efficiency is produced, reduces production cost, and the notch for the cast gate processed is sharp, inner surface is smooth, hence it is evident that obtain than electro-discharge machining Cast gate is high-quality.

According to the utility model, the diameter of the head body 41 is less than the diameter of the cutter hub 3.Above-mentioned setting can mention High manufacturing accuracy ensures processing quality.

Further, with the interconnecting piece 43 of cone type between the cutter hub 3 and the cutter head portion 4.Pass through the circle The interconnecting piece 43 of frustum type realizes that the diameter of the head body 41 is less than the diameter of the cutter hub 3.Aperture has been effectively ensured to pass through The quality of logical cutter.

According to the utility model, the diameter of the head body 41 is less than the maximum width D₂.Further increase processing Precision ensures processing quality.

Angle theta according to the utility model, between two first knife faces 421₄For 10-160 degree；Two described second Angle theta between knife face 422₅For 60-160 degree.

According to the utility model, the angle theta₄For 20-120 degree.

According to the utility model, the angle theta₅For 90-150 degree.

According to the utility model, the aperture of the utility model penetrates through cutter, using A1, AF1 or AFU steel, for hard Cast gate is penetrated through on material, or the high smart hole of tolerance is penetrated through on softwood.

Also it can be used common cutter material to prepare the cutter of second embodiment of the utility model, wanted for commercial tolerance The perforation in the hole asked.

The processing method of the aperture perforation cutter of the utility model, includes the following steps:

(1), one end of A1, AF1 or AFU steel pole (i.e. cutter hub 3) of cylinder type is ground by knife sharpener it is small, until setting Diameter is counted, the cutter head portion 4 of cylinder type is formed.

(2), knife sharpener is pulled to θ₄1/2 angle, the top in cutter head portion 4 is ground into out symmetrical first knife face 421, then Knife sharpener is pulled to θ₅1/2 angle, and cutter hub 3 is rotated by 90 °, thus by the top in cutter head portion 4 grind out two it is symmetrical Second knife face 422.

(3), finally by the maximum width D on the top of the blade 42₂It is milled to the outlet diameter of the cast gate or smart hole.

A specific embodiment according to the present utility model, using the knife of above-mentioned one embodiment and second embodiment Tool processes cast gate shown in FIG. 1, the bus L poured on the cross section that the opening's edge plane of symmetry is splitted₁And L₂Angle theta₁It is 30 degree, The center line L of the cast gate of processed product₃Angle α with the vertical side edge of the cross section is 40 degree.

The size of corresponding perforating cutter are as follows: θ₂It is 30 degree, the outlet diameter Φ of the cast gate is 0.8mm, described in two The maximum width D on 23 top of blade₁It is the 95% of Φ for 0.76mm.

The size of corresponding aperture perforation cutter are as follows: the angle theta between two first knife faces₄It is 60 degree, two institutes State the angle theta between the second knife face₅It is 120 degree.

Specific procedure of processing is as follows:

The roughing stage: as shown in figure 9, the angle β of jig 6 is 50 degree, it is first that processed product 5 is fixed with jig 6, and even It is fixed on milling machine together with jig 5, then by the perforating cutter of one embodiment vertically from top to bottom from processed product 5 Top surface while rotation while cut, cut depth be 0.05mm/ time, revolving speed be 2500 revs/min, when cutter decline 0.05mm depth When, cutter is lifted up, bits foam is discharged from the chip space 22, then repeats to cut, until separating out mouth, there is also about 0.05mm.

Finishing stage: causing perforating cutter to wear since the roughing stage repeatedly cuts, and machining accuracy reduces, therefore needs A knife is changed to finish last 0.05mm depth.Controlling revolving speed is 3000 revs/min, and a knife gos deep into 0.05mm, is protected It demonstrate,proves and is expanded slightly outwards at the gate outlet of the side of processed product 5, but and be not penetrated.

The perforation stage: cutter is penetrated through with the aperture of second embodiment, control revolving speed is 3000 revs/min, and a knife will be to be added The side of chemical product 5 penetrates through, and forms outlet.

The perforating cutter of the utility model and aperture penetrate through cutter, are not limited solely to the aperture of cast gate shown in FIG. 1.It can For opening up for other cast gates, the aperture on product can also be realized by boring method conventional in the prior art.

Specific embodiment of the utility model is described in detail above, but it is only used as example, the utility model It is not restricted to particular embodiments described above.To those skilled in the art, any that this practical is equal Modifications and substitutions are also all among the scope of the utility model.Therefore, the institute under the spirit and scope for not departing from the utility model The equal transformation and modification of work, should all cover in the scope of the utility model.

Claims

1. a kind of aperture penetrates through cutter, which is characterized in that the cutter hub including cylindrical type, and the cutter head of described cutter hub one end is set Portion, the cutter head portion include the blade at the top of the head body and the head body of cylinder type；

The maximum width D on the top of the blade₂Equal to the outlet diameter Φ of cast gate.

2. aperture according to claim 1 penetrates through cutter, which is characterized in that the diameter of the head body is less than the knife The diameter of body.

3. aperture according to claim 2 penetrates through cutter, which is characterized in that have between the cutter hub and the cutter head portion The interconnecting piece of cone type.

4. aperture according to claim 1 penetrates through cutter, which is characterized in that the diameter of the head body be less than it is described most Big width D₂。

5. aperture according to claim 1 penetrates through cutter, which is characterized in that the angle theta between two first knife faces₄ For 10-160 degree；Angle theta between two second knife faces₅For 60-160 degree.

6. aperture according to claim 5 penetrates through cutter, which is characterized in that the angle theta₄For 20-120 degree.

7. aperture according to claim 5 penetrates through cutter, which is characterized in that the angle theta₅For 90-150 degree.