CN2829941Y

CN2829941Y - Cutting tools

Info

Publication number: CN2829941Y
Application number: CN 200520046811
Authority: CN
Inventors: 葛强
Original assignee: WS Precision Tools (Shanghai) Co Ltd
Current assignee: WS Precision Tools (Shanghai) Co Ltd
Priority date: 2005-11-23
Filing date: 2005-11-23
Publication date: 2006-10-25
Anticipated expiration: 2015-11-23

Abstract

The utility model relates to a cutting tool which comprises a cutting tool main body. The utility model is characterized in that cutting edge parts arranged at two corners of the cutting tool main body form an arc, wherein elliptical arc parts are formed at the cutting edge parts at two corners of the cutting tool main body and chamfering arc parts are formed at the cutting edge parts at two corners of the cutting tool main body beside the elliptical arc parts. Because back angles are formed at both sides of the bottom side of each cutting edge part, and chamferings are arranged at the cutting edge parts at the two corners of the cutting tool main body to form the elliptical arc parts, the utility model has the advantages that stability, stability and service life are enhanced, and the cutting tool can be suitable for high-speed cutting operating condition and processing operating condition. The chamfering arc parts are formed at the cutting edge parts at the two corners of the cutting tool main body beside the elliptical arc parts to cause the cutting tool to be suitable for improving cutting instantaneous temperature; therefore, the service life of the cutting tool is prolonged, and processing precision is enhanced; in addition, cutting point circular arcs are formed at the two corners of the cutting tool, a tool bit part adopts cubic boron nitride composite sheets and hard alloy used as a basal body to cause the cutting and processing work of the cutting tool to attain the requirement of high precision, high speed and long life.

Description

Cutting tool

Technical field

The utility model relates to a kind of cutting tool, relate in particular to a kind of be installed on the cutting machines in order to the cutting hard material and require the novel cutting tool of cutting high accuracy, high-speed, high life.

Background technology

The prior art cutting tool is because its structure is a simple cutter district shape, so there is following problem in the prior art cutter in manufacturing and real process:

1. the intensity of cutter is low.Because the intensity of cutter is not high, therefore not only influences the service life of cutter, and when practical operation and use, limited the speed of cutting, thereby influenced the program of operation.

2. the cutting precision of cutter is poor.Because cutter intensity is low, therefore can not adapts to the cutwork of High Temperature And Velocity degree, thereby influence the cutting precision of work piece.

Summary of the invention

The purpose of this utility model is to provide a kind of improved cutting tool, and it can be worked under the condition of High Temperature And Velocity degree, and reaches high-precision cutting requirement.

The purpose of this utility model is achieved in that

A kind of cutting tool comprises: cutter body; Be characterized in: the blade part that described cutter body is two jiaos is curved; Wherein, two jiaos of blade parts of described cutter body form the curved portions of blunt circle; Two jiaos of blade parts of described cutter body are in the other chamfered edge curved portions that forms of blunt circular arc portion.

In above-mentioned cutting tool, wherein, the radius R n that two jiaos of blade parts of described cutter body form blunt circular arc portion is 0.005 millimeter.

In above-mentioned cutting tool, wherein, the radius r e of two jiaos of blade part chamfered edges of described cutter body curved portions is 0.010 millimeter.

In above-mentioned cutting tool, wherein, the both sides, base of two jiaos of blade parts of the described cutter body formation relief angle that slopes inwardly, this relief angle and horizontal plane form angle α 1, and this angle α 1 is between 8-15 ° of scope.

In above-mentioned cutting tool, wherein, the blade part that described cutter body is two jiaos is provided with a chamfering, and this chamfering and base form angle α 2, and the angle of this α 2 is between 17-23 ° of scope.

In above-mentioned cutting tool, wherein, described cutter body two dihedrals become tool arc, and the radius R of this tool arc is 0.5 millimeter.

In above-mentioned cutting tool, wherein, the tangent line of two arcs of two jiaos of blade parts of described cutter body and base form equilateral triangle.

In above-mentioned cutting tool, wherein, the base of described cutter body and blade part arc tangent line form angle α 3, and the angle of this angle α 3 is 60 ° ± 5 '.

The utility model cutting tool makes it compared with prior art owing to adopted above-mentioned technical scheme, has following advantage and good effect:

1. the utility model is owing to the formation relief angle that slopes inwardly in both sides, two blade part bases, the blade part that cutter body is two jiaos is provided with a chamfering and forms the curved portions Rn of blunt circle, not only improve the intensity of cutter thus, increased the stability of cutter, and can prolong the service life of cutter; Make cutter can adapt to the working condition of high-speed cutting processing simultaneously;

2. the utility model is owing to the other chamfered edge curved portions re that also forms of blunt round Rn curved portions on blade part, make cutter can improve the cutting transient temperature thus, thereby be able under the situation of softening machined material hardness, improve simultaneously the surface quality of workpiece, thereby not only can have prolonged the life-span of cutter and but also improve machining accuracy.

3. the utility model is owing to two dihedrals with cutting tool become tool arc, cutter head has partly adopted new special cubic boron nitride composite sheet and carbide alloy as matrix, therefore make the machining of cutter reach high accuracy, high-speed and long-life requirement, thereby can adapt to and reach the high-precision processing request of engine breathing mouth.

Description of drawings

By the description of a following embodiment to the utility model cutting tool, can further understand the purpose of this utility model, specific structural features and advantage in conjunction with its accompanying drawing.Wherein, accompanying drawing is:

Fig. 1 is the structural representation of the utility model cutting tool;

Fig. 2 is the structure for amplifying schematic diagram of Fig. 1 blade part;

Fig. 3 is the structure for amplifying schematic diagram of Fig. 2 curved knife blade;

Fig. 4 is the structural representation of the utility model cutting tool rake face.

The specific embodiment

See also Fig. 1 to shown in Figure 4, the utility model cutting tool comprises: cutter body 1, and different with the sharpener tool earnestly of prior art is that the blade part 2 at 1 liang of angle of the utility model cutting tool body forms the shape of arc; And the cutter head of the utility model cutting tool has partly adopted new special cubic boron nitride composite sheet and carbide alloy as matrix, has improved the hardness and the toughness of cutter like this.

See also Fig. 1 to shown in Figure 3, they are structure for amplifying schematic diagrames of the utility model cutting tool structure schematic diagram and knife edge part.The structure that the blade part 2 of the utility model at 1 liang of angle of cutter body forms arc is, 3 both sides, base of the blade part 2 formation relief angle that slopes inwardly, this relief angle and horizontal plane form an angle α 1, this angle α 1 is between 8-15 ° of scope, in the present embodiment, the angle of this α 1 is 11 ° of (see figure 1)s; Simultaneously, the blade part 2 at 1 liang of angle of cutter body is provided with a chamfering, and this chamfering and base 3 form angle α 2, and the angle of this angle α 2 is between 17-23 ° of scope, and in the present embodiment, the angle of this α 2 is 20 ° of (see figure 1)s.

In addition, on the basis of above-mentioned α 1 (angle of relief angle and horizontal plane) and α 2 (angle that chamfering and base 3 form), also formed the curved portions of blunt circle on 1 liang of angle blade part 2 of cutter body, the curved portions radius R n of this blunt circle is 0.005 millimeter; And in the other chamfered edge curved portions that forms of blunt circular arc portion, the radius r e of this chamfered edge curved portions is 0.010 millimeter.

The setting of above-mentioned Rn curved portions, can improve the intensity of cutter, can improve the speed of cutting thus, and then being provided with of raising size stability re curved portions can adapt to raising cutting transient temperature, under the situation of softening machined material hardness, improve the surface quality of workpiece simultaneously and prolong service life of cutter, thereby not only can prolong the life-span of cutter and but also improve machining accuracy.

See also shown in Figure 4ly, the tangent line of two arcs of 1 liang of angle blade part 2 of the utility model cutter body 4 has formed equilateral triangle with base 3; Make the base 3 of cutter body 1 form angle α 3 with blade part 2 arc tangent lines 4, this angle α 3 angles are 60 ° ± 5 ', and in the utility model, the error of this equilateral triangle height is only in H ± 0.012; Simultaneously, point of a knife design is circular shape, arc radius R is 0.4 millimeter, and the design of circular arc point of a knife can shock resistance, can cut brisk again; And, in the present embodiment, cutter head has partly adopted new special cubic boron nitride composite sheet and carbide alloy as matrix, the cubic boron nitride material width is got 1.4 millimeters, not only guarantee weld strength thus, can suitably save expensive cubic boron nitride material again, and improve the hardness and the toughness of cutter, enable to adapt to and reach the high-precision processing request of engine breathing mouth.

In sum, the utility model cutting tool is because the formation relief angle that slopes inwardly in both sides, blade part base, and the blade part that cutter body is two jiaos is provided with a chamfering and forms blunt circular arc portion, intensity, stability and the service life of having improved cutter thus; Make cutter can adapt to the working condition of high-speed cutting processing simultaneously; And also form the chamfered edge curved portions because blunt circular arc portion is other on blade part, make cutter can adapt to the working condition that improves the cutting transient temperature thus, thus not only can prolong cutter life-span and but also improved machining accuracy; Two dihedrals with cutting tool become tool arc in addition, cutter head has partly adopted new special cubic boron nitride composite sheet and carbide alloy as matrix, therefore make the machining of cutter reach high accuracy, high-speed and long-life requirement, thereby can adapt to and reach the high-precision processing request of engine breathing mouth, improved the service life of cutter, therefore very practical.

Claims

1. a cutting tool comprises: cutter body (1); It is characterized in that: the blade part (2) that described cutter body is (1) two jiao is curved; Wherein, described (1) two jiao of blade part of cutter body (2) forms the curved portions of blunt circle; Described (1) two jiao of blade part of cutter body (2) is in the other chamfered edge curved portions that forms of blunt circular arc portion.

2. cutting tool as claimed in claim 1 is characterized in that: the radius R n of the blunt circular arc of described (1) two jiao of blade part of cutter body (2) formation portion is 0.005 millimeter.

3. cutting tool as claimed in claim 1 is characterized in that: the radius r e of described (1) two jiao of blade part of cutter body (2) chamfered edge curved portions is 0.010 millimeter.

4. cutting tool as claimed in claim 1 is characterized in that: 3 both sides, base of described (1) two jiao of blade part of cutter body (2) the formation relief angle that slopes inwardly, and this relief angle and horizontal plane form angle α 1, and this angle α 1 is between 8-15 ° of scope.

5. as claim 1 or 4 described cutting tools, it is characterized in that: the blade part (2) that described cutter body is (1) two jiao is provided with a chamfering, and this chamfering and base 3 form angle α 2, and the angle of this α 2 is between 17-23 ° of scope.

6. cutting tool as claimed in claim 1 is characterized in that: described cutter body (1) two dihedral becomes tool arc, and the radius R of this tool arc is 0.5 millimeter.

7. as claim 1 or 4 described cutting tools, it is characterized in that: the tangent line 4 of two arcs of described (1) two jiao of blade part of cutter body (2) forms equilateral triangle with base 3.

8. as claim 1 or 7 described cutting tools, it is characterized in that: the base 3 of described cutter body (1) forms angle α 3 with blade part (2) arc tangent line 4, and the angle of this angle α 3 is 60 ° ± 5 '.

9. as claim 1 or 7 described cutting tools, it is characterized in that: the corner radius R of described cutter body (1) is 0.4 millimeter.