CN2298892Y

CN2298892Y - Circular blade for turning disc-shaped steel piece

Info

Publication number: CN2298892Y
Application number: CN 97238443
Authority: CN
Inventors: 陈善昆
Original assignee: Zhuzhou Cemented Carbide Factory
Current assignee: Zhuzhou Cemented Carbide Group Co Ltd
Priority date: 1997-06-26
Filing date: 1997-06-26
Publication date: 1998-12-02
Anticipated expiration: 2007-06-26

Abstract

The utility model relates to a mechanical clamping formula circular knife piece of turning disk steel spare. A plurality of small pits [7] which are uniformly distributed along the circumference are arranged on a chip breaker conical surface [5] of the existing circular blade with a circular chip breaker, and a chip control small curved surface [8] which is continuously or discontinuously and uniformly distributed along the circumference is arranged on a chip breaker acting surface [6 ]. The small pits and the top surface of the blade form a larger front angle, so that the cutting force and chip breaking can be reduced under the condition of keeping the strength of the blade, the contact length of the iron chips on the chip breaking action surface is reduced by the chip control small curved surface, the working temperature of the blade can be reduced, and the service life of the blade is prolonged.

Description

A kind of circular knife of turning dish type steel part

The utility model newly relates to a kind of cylindrical of turning dish type steel part, the mechanical clamping type circular knife of end face, particularly relates to the machine folder circular knife of the train rim after turning is quenched.

These professional personnel know, when design clamped cutting bit sheet, for the ease of chip breaking, have generally all designed chip-breaker on blade, control the distortion of iron filings by it, help chip breaking.When the cylindrical of turning dish type steel part, end face, the working cutting edge of the machining direction of circular knife and circular knife a tangential consistent or very little angle is only arranged usually, the processed broken chip problem is more outstanding at this moment.It is general that design is a kind of on this circular knife solves this problem (see Zhuzhou Hard Alloy Plant indexable insert tip, throw away tip sample, version in 1992, the p25 page or leaf is an iso standard) with the concentric annular chip-breaker of circular knife.The active face of chip breaker of the portion of close blade center of this chip-breaker is being controlled the flow direction of iron filings when blade leaves.It is important parameters very from the bits angle promptly that active face of chip breaker and blade push up interplanar angle.Increase from the bits angle, help chip breaking, but the friction of iron filings blade active face of chip breaker is also strong more, cutting force is increased, the operating temperature of blade rises, and influences blade life, so again can not be excessive from the bits angle.

On the other hand, reduce the distortion aggravation that the blade anterior angle can make iron filings, the thickness of iron filings is increased, help chip breaking.But too small anterior angle not only makes cutting force increase, and increases energy resource consumption, also can increase the wearing and tearing of iron filings blade front, improves the cutting temperature of blade, and blade is damaged prematurely.

The annular chip-breaker that adopts on the present circular knife is difficult to solution and both had been easy to chip breaking, prolongs the blade problem in service life again.

The purpose of this utility model is exactly in order to solve the contradiction between above-mentioned chip breaking and the blade life, a kind of chip breaking that both helped to be provided, help reducing cutting force again, prolonging the circular knife of blade life.

For achieving the above object, the technical scheme that the utility model is taked is: circular knife is by the baseplane, conical side, go out to consider to be worth doing the circular cutting edge that negative chamfered edge on the end face and side intersection constitute, between main faceted pebble of annular and planar annular, by the conical surface that is spill, the active face of chip breaker and the annular chip-breaker that the slick and sly circular-arc circle ring surface that is connected of the conical surface and active face of chip breaker is formed that are convex, and center positioning hole constitutes, on the conical surface of annular chip-breaker, be arranged with somely, on active face of chip breaker, be arranged with along the continuous or discontinuous equally distributed control of circumference and consider little curved surface to be worth doing along the equally distributed small rut of circumference.The acting in conjunction that utilizes small rut on the conical surface and the control on the active face of chip breaker to consider little curved surface to be worth doing, the purpose that reaches favourable chip breaking and prolong the blade birthday noodle.

The little curved surface of control bits can be the little groove that an angle a is arranged between its normal and the circular knife RADIAL that passes its mid point, angle a 〉=0 °,＜90 °.

The little curved surface of control bits can also be the small boss that an angle a is arranged between its normal and the circular knife RADIAL that passes its mid point, angle a 〉=0 °,＜90 °.

Advantage of the present utility model is: increased some little curve pocket on the conical surface equably, thereby little anterior angle that a conical surface and blade end face form and pit and one of the formation of blade end face bigger anterior angle have been arranged, such structure is under the situation that keeps edge strength, not only help bite and descend, also be beneficial to chip breaking.In addition, on active face of chip breaker, little curved surface is considered in some controls that distribute according to certain rules to be worth doing, utilize these little curved surfaces that the iron filings that flow out are controlled again, to reduce the contact length of iron filings on active face of chip breaker, reduce the heat transmission of iron filings, reduce the operating temperature of blade, prolong blade life active face of chip breaker.The existing enough intensity of cutting edge that the utility model can be easily reaches blade by the adjustment to the quantity of small rut, position, curvature, the degree of depth can alleviate the purpose of cutting force again, and cooperate the little groove on the active face of chip breaker or the small boss regularity of distribution and cross sectional shape thereof, the control of the variation of size reaches chip breaking, controls the purpose of considering to be worth doing.

The utility model is described in further detail below in conjunction with drawings and Examples.

The vertical view of the embodiment of little curved surface is considered in the linear pattern control that Fig. 1 the utlity model has angle a to be worth doing;

B-B profile among Fig. 2 Fig. 1;

I partial enlarged drawing among Fig. 3 Fig. 2, have on the active face of chip breaker 6 little groove 8 ';

I partial enlarged drawing among Fig. 4 Fig. 2 has small boss 8 on the active face of chip breaker 6 ";

H partial enlarged drawing among Fig. 5 Fig. 1;

A-A profile among Fig. 6 Fig. 3, Fig. 4;

The E-E profile of Fig. 7 Fig. 5, have on the active face of chip breaker 6 little groove 8 ';

The E-E profile of Fig. 8 Fig. 5 has small boss 8 on the active face of chip breaker 6 ";

Fig. 9 angle a is o, has the embodiment that two rows of mutually staggered, the outside control of camber line are considered little curved surface to be worth doing;

Figure 10 angle a is o, has the embodiment that two rows of mutually staggered, the inside control of camber line are considered little curved surface to be worth doing;

Figure 11 has the little curved surface of annular control bits, and angle a is the embodiment of o;

Figure 12 has angle a and is not equal to 0, and the embodiment of little curved surface is considered in the arc line type control to be worth doing;

Figure 13 angle a is o, has the embodiment that little curved surface is considered in the control of two rows of mutually staggered linear pattern to be worth doing;

Figure 14 has the regular polygon control and considers little curved surface to be worth doing, and angle a is the embodiment of o;

Figure 15 has two rows of mutually staggered, the little curved surface of circular control bits, and angle a is the embodiment of o;

Circular knife of the present utility model is by baseplane 2; Go out to consider to be worth doing end face, conical side 3 and center positioning hole 4 are formed.The intersection that goes out to consider to be worth doing negative chamfered edge face 10 and side 3 on the end face has constituted garden shape cutting edge, between the main faceted pebble 9 and planar annular 1 of annular, be chip-breaker, it is the disconnected of convex and is cut acting surface 6 and the conical surface 5 is constituted with the disconnected garden ring curved surface of cutting the acting surface 6 slick and sly garden arcuations that are connected by the conical surface 5 that is spill.Some equally distributed small ruts 7 of garden week that are are arranged on the conical surface 5, and disconnected cut to have on the acting surface 6 along garden Zhou Lianxu or discontinuous equally distributed control consider little curved surface 8 to be worth doing, the little curved surface 8 of control bits i.e. the small boss 8 of little groove 8 ' again ".The conical surface 5 forms a less anterior angle 11 with the blade end face, and 7 of small ruts and blade end face form big anterior angle 12, have so both helped chip breaking, help reducing cutting force again, have also kept the intensity of blade.The assemble line of the straight line that small rut 7 is connected respectively by curve or curve and its two ends is rotated as plain line and constitutes.Little groove 8 ' normal profile be assemble line with straight line that the curve of symmetry axis or curve and its two ends are connected respectively.Small boss 8 " shape can be ball-crown body or spherical crown ennation, also can be the cone of dribbling hat or the garden awl ennation of dribbling hat, can also be the ellipse garden of part tourus or part ennation, and part paraboloid or part parabolic ennation.Little groove 8 ' or small boss 8 " normal and pass angle a 〉=0 ° between its garden blade RADIAL of mid point,＜90 °.The angle of control angle a, little groove 8 ' or small boss 8 " cross sectional shape, and they are along the regularity of distribution of circumference, just can obtain chip breaking, the effect of control bits is identical, but the garden blade of the adaptation of effect similarities and differences difference purposes.Fig. 9-Figure 15, just represented little groove 8 ' or small boss 8 " along the continuous or discrete various arrangement modes of circumference; when angle is o; little curved surface can have the circle (Figure 15) of two rows of mutually staggered; outwards be camber line shape (Fig. 9) and inwardly be the camber line shape (Figure 10) and the discontinuous arrangement mode of shape (Figure 13) linearly; the continuous arrangement mode of (Figure 11) and regular polygon (Figure 14) also can be arranged ringwise; in angle＞0 °, in the time of＜90 °,, little curved surface can have the discontinuous arrangement mode of linear pattern (Fig. 1) and arc line type (Figure 12).In various arrangement modes, the shape of little curved surface can be chosen a kind of in aforementioned different shape, to satisfy blade processing and the actual needs that use.

Claims

1, a kind of circular knife of turning dish type steel part, comprise baseplane [2], conical side [3], go out to consider to be worth doing the circular cutting edge that the intersection of negative chamfered edge [10] and side [3] on the end face constitutes, be positioned between annular main faceted pebble [9] and the planar annular [1], by the conical surface that is spill [5], the active face of chip breaker [6] and the annular chip-breaker that the slick and sly circular-arc circle ring surface that is connected of the conical surface [5] and active face of chip breaker [6] is constituted that are convex, and center positioning hole [4], it is characterized in that having on the conical surface [5] at annular chip-breaker some, on active face of chip breaker [6], have along the continuous or discontinuous equally distributed control of circumference and consider little curved surface [8] to be worth doing along the equally distributed small rut of circumference [7].

2, circular knife according to claim 1 is characterized in that the little curved surfaces of control bits [8] can be the little grooves [8 '] that an angle a is arranged between its normal and the circular knife RADIAL that passes its mid point, angle a 〉=0 °,＜90 °.

3, circular knife according to claim 1 is characterized in that the little curved surfaces of control bits [8] can be small boss that an angle a is arranged between its normal and the circular knife RADIAL that passes its mid point [8 "], angle a 〉=0 °,＜90 °.

4, circular knife according to claim 1 is characterized in that small rut [7] is that the assemble line of the straight line that linked to each other respectively by curve or curve and its two ends is rotated as plain line and forms.

5, circular knife according to claim 2, the normal profile that it is characterized in that little groove [8 '] are the assemble line with straight line that the curve of symmetry axis or curve and its two ends link to each other respectively.

6, circular knife according to claim 3 is characterized in that [shape of 8 "] can be ball-crown body or spherical crown ennation to small boss, also can be the cone of dribbling hat or the circular cone ennation of dribbling hat.

7, circular knife according to claim 3 is characterized in that [shape of 8 "] can be part ellipsoid or the oval ennation of part to small boss, also can be part paraboloid or part parabolic ennation.

8,, it is characterized in that the little curved surfaces of control bits [8] are angle a＞0 °, the discontinuous little curved surface of＜90 ° linear pattern or arc line type according to claim 1,2 or 3 described circular knifes.

9, according to claim 1,2 or 3 described circular knifes, it is characterized in that the little curved surfaces of control bits [8] be two rows of mutually staggered, outwards be arc line type or inwardly be arc line type or the discontinuous little curved surface of type linearly, angle a equals 0 °.

10, according to claim 1,2 or 3 described circular knifes, it is characterized in that the control little curved surfaces of bits [8] are discontinuous little curved surfaces two rows of mutually staggered, circular, angle a equals 0 °.

11, according to claim 1,2 or 3 described circular knifes, it is characterized in that the control little songs of bits [8] are the continuous little curved surfaces of annular or regular polygon, angle a equals 0 °.