CN100417476C

CN100417476C - Transposable turning tool blade for working high-hardness, high-viscosity material

Info

Publication number: CN100417476C
Application number: CNB2005100324853A
Authority: CN
Inventors: 刘敏; 何志平; 张京
Original assignee: Zhuzhou Cemented Carbide Cutting Tools Co Ltd
Current assignee: Zhuzhou Cemented Carbide Cutting Tools Co Ltd
Priority date: 2005-12-02
Filing date: 2005-12-02
Publication date: 2008-09-10
Anticipated expiration: 2025-12-02
Also published as: CN1775431A

Abstract

The present invention provides a cutter blade for turning materials with high hardness and viscosity, such as high-temperature alloy. The cutter blade is in a polygonal geometric shape, and at least one end surface is concave to a main body near the cutter tip to form a chip-breaking groove, wherein the chip-breaking groove comprises a cutting conical surface forming an included angle alpha with the end surface, a convex circular arc surface for blocking chips and concave curved surfaces for guiding and discharging chips, wherein the bus bar of the convex circular arc surface for blocking chips forms an included angle beta with the end surface; the cutting conical surface and the circular arc surface are crossed to form a circular arc cutting edge; the symmetric concave curved surfaces for guiding and discharging chips are respectively crossed with the side surface to form symmetric main cutters; the end surface and the side surface are crossed to be far away from the chip-breaking groove to form a bottom cutting edge which is parallel to the end surface, and the bottom cutting edge is glidingly connected with the main cutting edge; a cutter blade cutting edge composed of the circular arc cutting edge, an auxiliary cutting edge, the main cutting edge and the bottom cutting edge is lower than the end surfaces, and the circular arc cutting edge is higher than the bottom cutting edge. The transposable cutter blade for turning has the advantages of sharp cutter tip structure, high strength, and good chip guiding and discharging performance.

Description

High rigidity, the indexable turning insert of high viscosity material processing

Technical field

The present invention relates to a kind of indexable turning insert of processing high rigidity, high viscosity material.

Background technology

High rigidity, high viscosity material show in working angles that cutting temperature height, work hardening form seriously, easily that built-up edge, plastic deformation resistance are big, surface quality and precision are difficult for characteristics such as assurance, its machinable is less than 0.2 (the relative machinability of normalized condition 45# steel is 1), and the difficulty of machining is very big.At present using general blade is that no sword inclines in the grooved, point of a knife is not sharp, grooved is simple, makes process interruption, chip removal bad, and smear metal is entangled in the quality that cutter or finished work surface will badly influence surface of the work easily; And radiating effect is bad, makes a lot of heats concentrate on machining area and causes blade to participate in the cutting portion megadyne temperature to spend height and burn out point of a knife easily even collapse scarcely, the life-span of blade and the efficient of processing work are had a strong impact on.

Summary of the invention

It is the indexable turning processing blade of high rigidity, high viscosity material of representative that the problem to be solved in the present invention just provides a kind of being used for the high temperature alloy, has not only sharp, intensity but also high point of a knife structure and excellent dust lead, row's attribute energy.

High rigidity of the present invention, the indexable turning insert of high viscosity material processing, has polygonal geometry, the arc surface that comprises two parallel end faces, a plurality of side, connection two adjacent sides, end face and side, arc surface intersect formation point of a knife part, and arc edge, two main cutting edges, bottom cutting edge, described arc edge is higher than the bottom cutting edge, it is characterized in that: at least one described end face near the point of a knife place to the body sunken inside, form the chip-breaker comprise the cutting conical surface, retaining bits convex arc surface, guide bits concave curved surface; The angle of the described cutting conical surface and end face is α; The angle of described retaining bits convex arc surface bus and end face is β; The conical surface and arc surface are crossing to be formed described arc edge by cutting; Described two main cutting edges are formed and symmetry with the side is crossing respectively by the guide bits concave curved surface of symmetry; Auxilliary cutting edge is tangent with described arc edge main cutting edge respectively; Described bottom cutting edge by end face and side intersect away from the chip-breaker place form and parallel with end face, be connected with two main cutting edges are smooth; The blade cut sword that described arc edge, auxilliary cutting edge, main cutting edge and bottom cutting edge are formed is lower than end face.

Described angle α is 5 °～15 °; Described angle β is 10 °～30 °.

The value h that described arc edge is higher than the bottom cutting edge is 0.3mm～0.5mm.

Arc edge of the present invention is higher than the bottom cutting edge, and promptly arc edge and main and auxiliary cutting edge and are three-dimensional distribution not in a plane parallel with end face, thereby make blade sharp, are convenient to excise workpiece material, make point of a knife that enough cutting hardnesses are arranged again; End face near the point of a knife place to the body sunken inside, formation comprises the chip-breaker of the cutting conical surface, retaining bits convex arc surface, guide bits concave curved surface, be fusiform and lead, the chip removal structure, make smear metal successfully be directed, discharge machining area through chip-breaker, thereby and strengthen chip space and be convenient to the discharging of heat and reduced the cutting temperature on the blade effectively; The cutting edge that participates in processing also is the linear distribution in space, has increased the contact area with workpiece, effectively reduces unit cutting force.Thereby prolonged service life of blade, and cut briskly, accelerated cutting speed, improved production efficiency.Because chip-breaker is symmetrically distributed about how much bisectors of point of a knife, is suitable for the knife bar of left and right two kinds of headings simultaneously.

Description of drawings

The present invention is described further below in conjunction with accompanying drawing.

Fig. 1 is a schematic perspective view of the present invention;

Fig. 2 is the enlarged diagram at chip-breaker 12 places of Fig. 1;

Fig. 3 is the stereoeffect schematic diagram of Fig. 2;

Fig. 4 is the cutaway view of Fig. 2 along how much bisector A-A of point of a knife;

Fig. 5 is that the nose part of Fig. 1 is divided local side-looking enlarged drawing.

The specific embodiment

As Fig. 1～shown in Figure 3, indexable turning insert is used in high rigidity of the present invention, high viscosity material processing, is rhombus, also can be that other have polygonal geometry.It comprises two parallel end faces 1,2, a plurality of sides 3 and 4, arc surface 5 connects two adjacent sides 3 and 4, end face and side, arc surface intersect formation point of a knife part, end face or both ends of the surface near the point of a knife place to the body sunken inside, form the chip-breaker 16 that comprises cutting conical surface 12a, retaining bits convex arc surface 12b, guide bits concave curved surface 12c, 12d.Cutting conical surface 12a and the arc surface 5 crossing arc edges 6 that form, the guide bits part 12c of symmetry and 12d intersect the

main cutting edge

9 and 10 of formation symmetry respectively with side 3,4;

Auxilliary cutting edge

7,8 is tangent with arc edge 6,

main cutting edge

9,10 respectively; End face 1 or 2 intersect to form the bottom cutting edge 11 parallel with end face with side 3,4 away from chip-breaker 12 places, and with 9,10 smooth connections of main cutting edge.As Fig. 2, shown in Figure 5, arc edge 6, auxilliary cutting edge 7 (or 8), main cutting edge 9 (or 10) and bottom cutting edge 11 are formed the blade cut sword, and arc edge 6, auxilliary cutting edge 7 (or 8) and main cutting edge 9 (or 10) be not in the same plane parallel with end face, promptly being space multistory distributes, and arc edge 6 is higher than bottom cutting edge 11, and its value h is 0.3mm～0.5mm.。

As shown in Figure 4, the angle α of cutting conical surface 12a and end face 1 or 2 is 5～15 °; The angle β of retaining bits convex arc surface bus 12b and end face 1 or 2 is 10～30 °.

Arc edge of the present invention and main and auxiliary cutting edge are three-dimensional the distribution makes blade sharp, is convenient to excise workpiece material, makes point of a knife that enough cutting hardnesses are arranged again; End face near the point of a knife place to the body sunken inside, formation comprises the chip-breaker of the cutting conical surface, retaining bits convex arc surface, guide bits concave curved surface, be fusiform and lead, the chip removal structure, make smear metal successfully be directed, discharge machining area through chip-breaker, thereby and strengthen chip space and be convenient to the discharging of heat and reduced the cutting temperature on the blade effectively; The cutting edge that participates in processing is the linear distribution in space, has increased the contact area with workpiece, effectively reduces unit cutting force.Thereby prolonged the service life of blade, accelerated cutting speed, improved production efficiency.

Because chip-breaker is symmetrically distributed about how much bisectors of point of a knife, therefore different cutting positions and feed mode all is suitable for, and is suitable for the knife bar of left and right two kinds of headings simultaneously.

Blade of the present invention can be formed by cemented carbide powder compacting, through the grinding periphery to improve the blade repetitive positioning accuracy; Chip-breaker can be designed as double groove, also can be the single face groove.

Claims

1. high rigidity, the indexable turning insert of high viscosity material processing, has polygonal geometry, comprise two parallel end faces (1,2), a plurality of sides (3,4), connect two adjacent sides (3,4) arc surface (5), end face and side, arc surface intersects formation point of a knife part, and arc edge (6), two main cutting edges (9,10), bottom cutting edge (11), described arc edge (6) is higher than bottom cutting edge (11), it is characterized in that: at least one described end face (1,2) near the point of a knife place to the body sunken inside, form and to comprise the cutting conical surface (12a), retaining bits convex arc surface (12b), guide bits concave curved surface (12c, chip-breaker 12d) (12); The angle of the described cutting conical surface and end face is α; The angle of described retaining bits convex arc surface (12b) bus and end face is β; Described arc edge (6) forms by the cutting conical surface (12a) and arc surface (5) are crossing; Described two main cutting edges (9,10) are formed and symmetry with side (3,4) are crossing respectively by the guide bits concave curved surfaces (12c, 12d) of symmetry; Auxilliary cutting edge (7,8) is tangent with described arc edge (6), main cutting edge (9,10) respectively; Described bottom cutting edge (11) by (1,2) and side (3,4) locate away from chip-breaker (12) to intersect form and parallel with end face, with two main cutting edges (9,10) the smooth connection; The blade cut sword that described arc edge (6), auxilliary cutting edge (7,8), main cutting edge (9,10) and bottom cutting edge (11) are formed is lower than end face.

2. indexable turning insert is used in high rigidity according to claim 1, high viscosity material processing, and it is characterized in that: described angle α is 5 °～15 °; Described angle β is 10 °～30 °.

3. indexable turning insert is used in high rigidity according to claim 1, high viscosity material processing, and it is characterized in that: the value h that described arc edge (6) is higher than bottom cutting edge (11) is 0.3mm～0.5mm.