CN201823993U

CN201823993U - Cutting tool for high speed cutting

Info

Publication number: CN201823993U
Application number: CN2010205632490U
Authority: CN
Inventors: 蒋鹏
Original assignee: CHENGDU GERUN HI-TECH MATERIALS Co Ltd; Zigong Cemented Carbide Co Ltd
Current assignee: CHENGDU GERUN HI-TECH MATERIALS Co Ltd; Zigong Cemented Carbide Co Ltd
Priority date: 2010-10-16
Filing date: 2010-10-16
Publication date: 2011-05-11
Anticipated expiration: 2020-10-16

Abstract

The utility model discloses a cutting tool for high-speed cutting; one end of a cutting tool body is provided with a tool handle, and the other end of the cutting tool body is provided with a cutting edge composed of three spiral grooves and a core part arranged between the bottoms of the spiral grooves and the cutting tool body; and the bottoms of the grooves are in great circle arc type. The peripheral cutting edge of the cutting edge is formed between the adjacent spiral grooves, and the cutting edge comprises a front angle, a first rear angle and a second rear angle, wherein the front angle is 19-21 degrees, the first rear angle is 14-15 degrees, and the second rear angle is 22-24 degrees. The first rear angle is provided with a vibration-proof edge band, wherein the width of the edge band along cutting direction is 0.06-0.12 mm, and the included angle between the edge band and the cutting plane is 1-2 degrees. The cutting tool for high-speed cutting is used in the process of high-speed milling and processing of aerial thin-wall type cavity components and solves the problems of vibration and screaming generated in the prior processing, thereby improving the finishing degree of the processing surface, decreasing workpiece deformation and greatly improving the service life of the cutting tool.

Description

The high-speed cutting process tool

Technical field

The utility model relates to machining, especially a kind of high-speed cutting process tool, particularly a kind of high-speed milling cutter.

Background technology

The development trend of machining is high efficiency, high accuracy, and the developing direction of machining is high-speed cutting processing, and as a kind of advanced practical process technology, it is just becoming the main flow of machining.Today, cutting speed was up to 8000m/min, and material-removal rate reaches 150～1500cm3/min, and the superhard cutter material hardness reaches 3000～8000HV, and intensity reaches 1000Mpa, and machining accuracy is from 10um to 0.1um.Improve with cutting speed, the cutting force reduction is roughly more than 25～30%; Machined surface roughness reduces by 1～2 grade; Production efficiency improves, and production cost reduces.The development of High-speed Machining Technology and apply the raising that drives whole manufacturing progress and benefit.Begin to use also fast development at the end of the eighties and the beginning of the nineties to being widely used in Aero-Space, automobile, mold manufacturing industry processing aluminium, magnesium alloy, steel, cast iron and composites such as alloy, superalloy and carbon fibre reinforced plastic thereof, wherein processing cast iron and aluminium alloy are the most general.

When High Speed Cutting Technique is applied to aircraft industry,, be mostly to adopt the milling of monoblock aluminium alloy to form because most of strength member can improve the intensity and the shock resistance of part simultaneously again in order to reduce connection on the aircraft.Add man-hour at high-speed milling,, through regular meeting vibration appears, phenomenon such as scream.Cause surface to be machined fineness poor, workpiece is yielding, the cutting edge roundness broken invalid, and cutter life is not high.Common milling working (machining) efficiency is low, cost is high and adopt, and crudy does not reach requirement yet.In order to solve the problems of the technologies described above, on all sword cutting edges of cutter, attempt improving, on all sword cutting edges, stay the cylinder land of 0.1 ~ 0.2mm, promptly be not with relief angle.This design can alleviate the wedge angle phenomenon that processing cavity parts corner produces to a certain extent.But should design processing during aluminium alloy the resistance angle big, cut not briskly, fail well to address the above problem.

Summary of the invention

The purpose of this utility model is: at the problem of above-mentioned existence, provide a kind of and can effectively avoid processing vibration, scream, improve processed surface smoothness, reduce workpiece deformation, improve the high-speed cutting process tool of cutter life.

The utility model comprises cutter body, and cutter body one end is a handle of a knife, the core that constitutes between the blade that the other end constitutes at least two spiral grooves and the bottom of spiral grooves and the cutter body; Constitute the side face cutting edge of blade between the adjacent spiral grooves, spiral grooves forms the rake face of described cutting edge towards a side of cutter direction of rotation, described cutting edge and adjacent another spiral grooves form the back knife face between another side of cutter direction of rotation dorsad, rake face is an anterior angle with the angle of cutting basal plane, back knife face and cutting plane form relief angle, and described relief angle comprises first relief angle and second relief angle; Described anterior angle is 19 °-21 °, and described first relief angle is 14 °-15 °, and second relief angle is 22 °-24 °.Adopt the cutting edge of technical solutions of the utility model design, cutting edge is sharp.During the High-speed machining aluminium alloy, effectively reduce cutting force, deformation coefficient reduces, and the product that processes has less cutting deformation, improves the crudy of tool surface.Above-mentioned cutter is preferably milling cutter, and is Hardmetal materials.

Further preferably, the bottom of spiral grooves is the orthodrome grooved.Satisfying under the situation of intensity, bottom land adopts the orthodrome grooved, has reduced the thickness of the core of cutter, has increased chip space.So that control smear metal without stop, influence suface processing quality thereby avoid when high-speed cutting smear metal to accumulate.

Further preferably, described spiral grooves is three, forms three sword structures in the end of cutter body.On the structural design of cutter, what generally use both at home and abroad at present is the high-speed milling cutter of two-edged structure, and this milling cutter symmetry and chip removal performance are all fine, but the cutting resistance of monodentate is very big.Take into account intensity and hold the three sword structures of considering performance to be worth doing by design, greatly improved working (machining) efficiency.

Further preferably, offer the damping land on described first relief angle, this land is 0.06-0.12mm along the cutting direction width, and the angle of land and cutting plane is 1 °-2 °.The damping land of brand-new design has well solved the vibration that produces in the high-speed milling process, the phenomenon of screaming, and has improved processed surface smoothness, has reduced workpiece deformation, has improved cutter life greatly.

Description of drawings

The utility model will illustrate by embodiment and with reference to the mode of accompanying drawing, wherein:

Fig. 1 is the front view of the utility model cutter.

Fig. 2 is the left view of the utility model cutter.

Fig. 3 is the A portion enlarged diagram among Fig. 2.

The specific embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

High-speed cutting process tool shown in accompanying drawing 1-accompanying drawing 3 adopts the milling cutter of carbide alloy material, comprise cutter body 1, cutter body one end is a handle of a knife 4, the other end is the core 5 that constitutes between the bottom of the blade that constitutes of three spiral grooves 3 and spiral grooves and the cutter body, and channel bottom is the orthodrome grooved.Constitute the side face cutting edge 2 of blade between the adjacent spiral grooves, spiral grooves forms the rake face of described cutting edge towards a side of cutter direction of rotation, described cutting edge and adjacent another spiral grooves form the back knife face between another side of cutter direction of rotation dorsad, rake face is an anterior angle 6 with the angle of cutting basal plane, back knife face and cutting plane form relief angle, and described relief angle comprises first relief angle 7 and second relief angle 8; Described anterior angle is 19 °-21 °, and described first relief angle is 14 °-15 °, and second relief angle is 22 °-24 °.Offer the damping land on first relief angle, this land is 0.06-0.12mm along cutting direction width b, and the angle α of land and cutting plane is 1 °-2 °.

Carbide-tipped milling cutter with present embodiment, be applied to high-speed milling and process the vibration that has solved generation in the processing in the past in the process of aviation thin-walled die cavity parts, the phenomenon of screaming, improved processed surface smoothness, reduced workpiece deformation, improved cutter life greatly.

Adopt the damping land of brand-new design of the present utility model, well solved the vibration that produces in the high-speed milling process, the phenomenon of screaming, improved the processing work surface smoothness, reduced workpiece deformation, improved cutter life greatly.

The above only is preferred embodiment of the present utility model; only for technical conceive of the present utility model and characteristics are described; its purpose is to allow the personage that is familiar with this technology can understand content of the present utility model and is implemented; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be encompassed within the protection domain of the present utility model.

Claims

1. the high-speed cutting process tool comprises cutter body, and cutter body one end is a handle of a knife, the core that constitutes between the blade that the other end constitutes at least two spiral grooves and the bottom of spiral grooves and the cutter body; Constitute the side face cutting edge of blade between the adjacent spiral grooves, spiral grooves forms the rake face of described cutting edge towards a side of cutter direction of rotation, described cutting edge and adjacent another spiral grooves form the back knife face between another side of cutter direction of rotation dorsad, rake face is an anterior angle with the angle of cutting basal plane, back knife face and cutting plane form relief angle, and described relief angle comprises first relief angle and second relief angle; It is characterized in that: described anterior angle is 19 °-21 °, and described first relief angle is 14 °-15 °, and second relief angle is 22 °-24 °.

2. high-speed cutting process tool according to claim 1 is characterized in that: the bottom of spiral grooves is the orthodrome grooved.

3. the frock of electric pulse process tool inclined hole according to claim 2 is characterized in that: described spiral grooves is three, forms three sword structures in the end of cutter body.

4. the frock of electric pulse process tool inclined hole according to claim 3 is characterized in that: offer the damping land on described first relief angle, this land is 0.06-0.12mm along the cutting direction width, and the angle of land and cutting plane is 1 °-2 °.

5. according to the frock of each described electric pulse process tool inclined hole of claim 1-4, it is characterized in that: described cutter is a milling cutter.

6. according to the frock of each described electric pulse process tool inclined hole of claim 1-4, it is characterized in that: described cutter is a hard alloy cutter.