CN201151006Y

CN201151006Y - Improved milling cutter

Info

Publication number: CN201151006Y
Application number: CNU2007201275632U
Authority: CN
Inventors: 柯煌儒
Original assignee: NAKAWO INDUSTRIAL Co Ltd
Current assignee: NAKAWO INDUSTRIAL Co Ltd
Priority date: 2007-08-08
Filing date: 2007-08-08
Publication date: 2008-11-19
Anticipated expiration: 2017-08-08

Abstract

The utility model relates to an improved milling cutter, which comprises a main body, wherein an edge portion assemblage is formed on the tail end of the columnar main body, and the edge portion assemblage is provided with a dead point through utilizing the center on the tail end of the main body to be a benchmark, and an edge portion is forwards arranged through utilizing the dead point to be the center in an evenly divided way, and the edge portion is extended with a cutting edge from the dead point to the periphery of the main body, and one side of the cutting edge is aslant provided with a first relief face, and the side of the first relief face is further aslant provided with a second relief face. The utility model is characterized in that the main body is aslant provided with negative front angle faces which are designed in big angles on the other sides of the first relief face and the second relief face, and the main body is extended with a built-in chip escaping portion which is corresponding with each cutting edge on the lateral side. The improved milling cutter improves the service span of an edge angle, therefore, the milling cutter can be led to stably process, and the process application scope of the milling cutter is effectively extended, and the problems that the edge angle is broken and ruptured can not occur, and the serious occasions of injuring operation objects which are caused by centralized fraction and rebounded in processing can not occur.

Description

Improved milling cutter

Technical field

The utility model relates to a kind of milling cutter, relates in particular to a kind of milling cutter and is formed with blade in a side, with the improved milling cutter of blade cutting workpiece.

Background technology

As shown in Figure 1, the milling cutter 10 that existing high price alloy is made mainly is provided with the body 101 of a column, body 101 1 ends are formed with blade assembly 102, and blade assembly 102 is a benchmark with body 101 terminal centers, are provided with a dead point 103 (please cooperate with reference to Fig. 2 in addition) by benchmark.Then, and be that the center is forward divided equally blade 104 is arranged with dead point 103, and blade 104 by dead point 103 to body 101 peripheries and extended spirally blade 105 downwards, by blade 105 lopsidedness chip pocket 106 is arranged again; Blade 105 tiltedly has first relief surface 107 in chip pocket 106 other inclinations again, tilts to have one second relief surface 108 again in first relief surface, 107 sides again; Second relief surface 108 tiltedly has the clearance plane 109 (as shown in Figure 3) of handing-over chip pocket 106 in other inclination in addition.And blade 105 is formed with a sharp-pointed form with chip pocket 106 and the basil 1051 (as shown in Figure 4) of problem of stress concentration is arranged.

Please cooperate again with reference to Fig. 3, this dead point 103 be by chip pocket 106 extremely producing near mode, and owing to can't intersect, so that be easy to form not of uniform size and the not good dead point 103 of mean value.

This milling cutter 10 sees also shown in Figure 5ly in force, and it mainly is earlier to press a sincere target a with milling cutter in the turn 10 with dead point 103, utilizes blade 104 that the contact portion of target a is eliminated again; At this, if when dead point 103 has the not good situation of not of uniform size and mean value, easily, make target a generation scratch with dead point 103 friction target a, and also wipe line and loss, and become one of vibration main cause that adds man-hour with milling cutter 10 for dead point 103 itself brings.

Please cooperate with reference to Fig. 6, shown in Figure 7, its target a concentrates in the chip pocket 106 through the chip that blade 104 eliminates generation, overstock with the milling cutter 10 collocation chips of turn again and cause thrust, chip is followed chip pocket 106 release the Working position of target a, and make target a form default body.Right this blade 104 is when eliminating target a, be to adopt the blade 104 of this sharp-pointed form to eliminate the contact portion of target a, chip when it eliminates then concentrates in the chip pocket 106, (as shown in Figure 7) easily form the reverse resistance of cutting of the basil 1051, and destruction has the fluency of processing, and may cause vibration, so that cause not foot phenomenon of the not good and precision of processing average, and the basil 1051 may be because of oppositely resistance and tip are stressed, and disintegration, the cracked basil 1051, so that make this milling cutter 10 damage, scrap.

In addition, this target a eliminates the chip of generation through blade 104, then may rebound in chip pocket 106, and scratch target a, so can destroy the machined surface and the machined surface making precision of milling cutter 10; In sum, making of this milling cutter 10 itself reaches in process, has following shortcoming:

1, easily have not of uniform size and the not good situation of mean value for dead point 103.

2, the basil 1051 of work in-process has the disintegration of being easy to, cracked problem.

In sum, and make milling cutter 10 destruction be arranged, damage and injure serious phenomenons such as target a,, have only design otherwise designed milling cutter 10, its basil 1051 is strengthened, as the necessary target of milling cutter 10 improvement as for evading these shortcomings.

The utility model content

Technical problem underlying to be solved in the utility model is, overcome the above-mentioned defective that prior art exists, and provide a kind of improved milling cutter, promote basil service life, make milling cutter can stablize processing in view of the above, effectively expand the processing scope of application of milling cutter, can not make the basil produce disintegration, cracked problem, and can not make concentrated chip, bounce-back man-hour and injure severe case such as target adding.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of improved milling cutter, comprise: a body, body one end of this column is formed with the blade assembly, the blade assembly is that benchmark is provided with a dead point by the center of body one end, and with the dead point is that the center forward all is arranged with blade, and blade is extended with blade by dead point outside the body periphery, by the blade lopsidedness first relief surface is arranged again, tilts to have one second relief surface again in the first relief surface side again; It is characterized in that: this body tiltedly has the negative rake face of wide-angle design in first relief surface and other inclination of second relief surface; Body is postponed in corresponding each blade of leaning to one side again the recessed bits portion of escaping of putting.

Aforesaid improved milling cutter, wherein the negative rake face keeps handing-over that second relief surface is arranged.

Aforesaid improved milling cutter, wherein the recessed clearance plane that is equipped with is set up in the junction of the negative rake face and second relief surface.

Aforesaid improved milling cutter, wherein blade is circular-arc to the extension of body periphery, and extends to the bits portion of escaping.

Aforesaid improved milling cutter, wherein blade, negative rake face, first relief surface and second relief surface are the circular-arc bits portion of escaping that extends to.

Aforesaid improved milling cutter, wherein blade, negative rake face, first relief surface and second relief surface are to adopt the clockwise arc shape to extend to the bits portion of escaping.

Aforesaid improved milling cutter, wherein blade tilts to have the negative rake face in the counterclockwise direction, and blade tilts first relief surface and second relief surface are arranged in clockwise direction, and blade, negative rake face, first relief surface and second relief surface adopt spiral extension to escaping bits portion.

The beneficial effects of the utility model are, promote basil service life, make milling cutter can stablize processing in view of the above, effectively expand the processing scope of application of milling cutter, can not make the basil produce disintegration, cracked problem, and can not make concentrated chip, bounce-back man-hour and injure severe case such as target adding.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the front view of prior art.

Fig. 2 is the side view of prior art.

Fig. 3 is the upward view of prior art.

Fig. 4 is the local amplification view of the blade of prior art.

Fig. 5 is that the master of prior art looks the processing schematic diagram.

Fig. 6 is the side-looking processing schematic diagram of prior art.

Fig. 7 is the local amplification view that the blade of prior art adds man-hour.

Fig. 8 is a front view of the present utility model.

Fig. 9 is a side view of the present utility model.

Figure 10 is an elevational schematic view of the present utility model.

Figure 11 is the local amplification view of blade of the present utility model.

Figure 12 is that master of the present utility model looks the processing schematic diagram.

Figure 13 is a side-looking processing schematic diagram of the present utility model.

Figure 14 is the local amplification view that blade of the present utility model adds man-hour.

The number in the figure explanation:

(prior art)

A.... target

10.... milling cutter 101.... body

102.... blade assembly 103.... dead point

104.... blade 105.... blade

1051.... basil 106.... chip pocket

107.... the first relief surface 108...., second relief surface

109.... clearance plane

(the utility model)

A.... target

1.... milling cutter 11.... body

12.... blade assembly 13.... dead point

14.... blade 141.... blade

2.... the first relief surface 21...., second relief surface

3.... negative rake face 4.... escapes bits portion

5.... basil 6.... clearance plane

The specific embodiment

Consult Fig. 8 to shown in Figure 11, [be for master of the present utility model looks, side-looking, look up, the amplification view of blade part]; Be meant a kind of improved milling cutter, wherein, the milling cutter 1 that this high price alloy is made includes:

As shown in Figure 8, one body 11, body 11 1 ends of this column are formed with blade assembly 12, blade assembly 12 is that benchmark is provided with a contactless dead point 13 by the center of body 11 1 ends, and with contactless dead point 13 is that the center forward all is arranged with blade 14, and blade 14 is extended with blade 141 by dead point 13 outside body 11 peripheries, by blade 141 lopsidedness first relief surface 2 is arranged again, tilts to have one second relief surface 21 again in first relief surface, 2 sides again; Wherein: body 11 tiltedly has the negative rake face 3 of wide-angle design in

first relief surface

2 and 21 other inclinations of second relief surface; Body 11 is postponed in corresponding each blade 14 of leaning to one side again the recessed bits portion 4 of escaping (as shown in Figure 9) of putting.

Please cooperate and consult Figure 10, Figure 11, this slightly is the negative rake face 3 of circular arc and the basil 5 of first relief surface 2 and the 21 formation wide-angle designs (slotless design) of second relief surface; And the basil 5 of will following blade 14, first relief surface 2 and second relief surface 21 adopts spiral forms (circular-arc employing is circled round clockwise or counterclockwise) to be formed in the lump to milling cutter 1 and leans to one side, and the spiral moulding that forms in the lump can be concentrated and is located at the end that milling cutter 1 is leaned to one side.And the spiral moulding may extend to the bits portion 4 of escaping, get rid of in order to make things convenient for chip, and escaping bits portion 4 keeps again and negative rake face 3 and the handing-over of second relief surface, reach a complex form and connect face, and can recessedly be equipped with clearance plane 6 in the junction that connects face, in view of the above, cooperate the negative rake face 3 of wide-angle (chevron) design and spiral form blade 14 to reach a basil 5 of comprehensively strengthening with order.

This milling cutter 1 sees also Figure 12 in force to shown in Figure 14, and it mainly is to press a sincere target a with milling cutter in the turn 1 with dead point 13 earlier, utilizes blade 14 that the contact portion of target a is eliminated again.

Its target a eliminates the chip of generation through blade 14, and then take advantage of a situation to clearance plane 6 by negative rake face 3 and escape bits portion 4 and derive target a with about 30 °, so in these processing and implementation, the situation that no chip accumulates, rebounds; Milling cutter 1 collocation of (please cooperate and consult Figure 13, Figure 14) and turn has the negative rake face 3 of wide-angle (chevron) design, and with the spiral form blade 14 and the basil 5 (as shown in figure 14), can strengthen this basil 5 effectively comprehensively, and can make milling cutter 1 add man-hour with the wide-angle basil 5, can stablize the radial component of the axial thrust load of benchmark greater than vertical reference, certain this target of orientable processing a can not produce vibration, and can promote machined surface precision and the smooth depth of target a.

The purpose of this utility model is to utilize a contactless dead point 13 forward all to be arranged with blade 14 for the center, blade 14 is combined with the wide-angle basil 5, and the basil 5 adopts spiral forms to circle round to milling cutter 1 and leans to one side, strengthen the basil 5 effectively comprehensively, the milling cutter 1 that makes the high price alloy make effectively lowers to be lost, and can significantly promote 1 service life of milling cutter, and thoroughly evade existing problem of stress concentration, this is a major advantage of milling cutter 1.

The utility model body 11 is postponed in corresponding each blade 14 of leaning to one side in addition the recessed bits portion 4 of escaping of putting, make target a eliminates generation through blade 14 chip with about 30 ° by clearance plane 6 and escape bits portion 4 and take advantage of a situation and derive target a, so in these processing and implementation, the shortcoming that does not exist chip to accumulate, rebound, and the processing stability of lifting milling cutter 1, this is another advantage of the present utility model.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

1, a kind of improved milling cutter comprises:

One body, body one end of this column is formed with the blade assembly, the blade assembly is that benchmark is provided with a dead point by the center of body one end, and with the dead point is that the center forward all is arranged with blade, and blade is extended with blade by dead point outside the body periphery, by the blade lopsidedness first relief surface is arranged again, tilt to have one second relief surface again in the first relief surface side again; It is characterized in that: this body tiltedly has the negative rake face of wide-angle design in first relief surface and other inclination of second relief surface; Body is postponed in corresponding each blade of leaning to one side again the recessed bits portion of escaping of putting.

2, improved milling cutter according to claim 1 is characterized in that described negative rake face keeps handing-over that second relief surface is arranged.

3, improved milling cutter according to claim 2 is characterized in that the recessed clearance plane that is equipped with is set up in the junction of the described negative rake face and second relief surface.

4,, it is characterized in that described blade is circular-arc to the extension of body periphery, and extend to the bits portion of escaping according to claim 1,2 or 3 described improved milling cutters.

5,, it is characterized in that described blade, negative rake face, first relief surface and second relief surface are the circular-arc bits portion of escaping that extends to according to claim 1,2 or 3 described improved milling cutters.

6,, it is characterized in that described blade, negative rake face, first relief surface and second relief surface are to adopt the clockwise arc shape to extend to the bits portion of escaping according to claim 1,2 or 3 described improved milling cutters.

7, according to claim 1,2 or 3 described improved milling cutters, it is characterized in that described blade tilts to have the negative rake face in the counterclockwise direction, and blade tilts first relief surface and second relief surface are arranged in clockwise direction, and blade, negative rake face, first relief surface and second relief surface adopt spiral extension to escaping bits portion.