CN204893057U - Novel PCD milling cutter piece - Google Patents

Abstract

The utility model relates to a novel PCD milling cutter piece, including cutter body and tool bit, wherein, the octagonal structure of rake face for having four minor faces and four length of branch limits of cutter body, article three, excessive sword sets up respectively on three minor faces of rake face, be 145 contained angle theta 1 with long limit, excessive sword both sides all are equipped with fillet R with the rake face, back knife face is circular structure, be equipped with 20 relief angle theta 2 on the cutter body, the tool bit sets up on other of four minor faces of rake face, for the PCD material, the knife tip department of tool bit is equipped with the tangent plane, the tangent plane forms 25 corner cut theta 3 with cutting edge surface, the utility model discloses a corner cut passivation knife tip to make geometric parameters and structural design more reasonable, solved tipping, not stand wear and tear scheduling problem, greatly increase the life of PCD milling cutter piece.

Description

A kind of novel PC D cutter blade

Technical field

The utility model relates to a kind of novel PC D cutter blade, belongs to milling technology field.

Background technology

PCD is the abbreviation of English Polycrystallinediamond, Chinese is translated into polycrystalline diamond, corresponding with single-crystal diamond, PCD is applied to machining as a kind of ultrahard cutting tool material and has centuries history, PCD cutter has that hardness is high, compression strength is high, thermal conductivity and the characteristic such as wearability is good, can obtain very high machining accuracy and working (machining) efficiency in high-speed cutting.

Cutter blade and saw blade are a kind of saw blades containing element compositions such as volume carbon (C), tungsten (W), molybdenum (Mo), chromium (Cr), vanadium (V) or other materials, there is after heat treatment high thermohardening, be mainly used in the Milling Process of engine cylinder-body, cylinder cap etc., it is very fast to there are wearing and tearing in the cutter blade adopting ordinary rigid alloy to make, thus the problem causing product quality portion stable.

At present, existing patent proposes PCD material application and cutter blade, as patent 201191569U discloses a kind of PCD cutter blade for milling aluminium alloy castings faying face, this PCD cutter blade is quadrangle, poly-diamond is inlayed at blade four angles any one jiao, but the geometric parameter of this PCD cutter blade and structural design reasonable not, in Tool in Milling process, blade relief is excessive and sharp cutting edge is too sharp, easily there is tipping, the phenomenon such as not wear-resistant, make the service life of PCD cutter blade shorter, therefore the more rational PCD cutter blade of a kind of structure is significant.

Utility model content

The object of utility model is for defect of the prior art, propose a kind of novel PC D cutter blade, adopt corner cut passivation point of a knife, and make geometric parameter and structural design more reasonable, solve tipping, the problem such as not wear-resistant, greatly increase the service life of PCD cutter blade.

The utility model is achieved by the following technical solutions.

A kind of novel PC D cutter blade, comprise cutter hub and cutter head, wherein, described cutter hub is solid, described cutter hub has rake face, rear knife face and side knife surface, described rake face is the eight-sided formation with four minor faces and four long limits, described rake face is provided with three excessive swords, described excessive sword is separately positioned on three minor faces of rake face, angle theta 1 between transitional edges and the long limit of rake face is in 145 °, described excessive sword both sides and rake face are equipped with fillet R, described rear knife face and rake face be arranged in parallel, described rear knife face is circular configuration, described cutter hub is provided with relief angle θ 2, described relief angle θ 2 is 20 °, described cutter head is arranged on an other minor face of rake face, described cutter head is PCD material, described cutter head has blade face and point of a knife, the point of a knife place of described cutter head is provided with tangent plane, described tangent plane and blade face form corner cut θ 3, described corner cut θ 3 is 25 °.

Above-mentioned a kind of novel PC D cutter blade, wherein, the thickness h of described cutter hub is 4.76 ± 0.025mm.

Above-mentioned a kind of novel PC D cutter blade, wherein, the length L of described excessive sword is 2.5mm.

Above-mentioned a kind of novel PC D cutter blade, wherein, the radius of described fillet R is 0.5mm.

Above-mentioned a kind of novel PC D cutter blade, wherein, the diameter d of described rear knife face is 12.7 ± 0.025mm.

The beneficial effects of the utility model are:

The utility model adopts the point of a knife of corner cut design passivation cutter head, and the angle of corner cut is 25 °, and very suitable, if be greater than this angle, then point of a knife is more blunt, reduces cutting dynamics, reduces the service efficiency of blade; If be less than this angle, then passivation effect is not obvious, namely compares conventional blades, obviously cannot reach the effect increasing service life; Therefore the design that the utility model adopts not only can not affect practicality because angle is excessive, and can effectively reduce the problems such as tipping, easily wearing and tearing that conventional P CD cutter blade causes because point of a knife is excessively sharp, improves the durability of PCD cutter blade.

The utility model additionally uses the excessive sword that the long limit with rake face is 145 ° of angles, fillet is coordinated to be connected design, to adopt inclination angle to design different from the excessive sword of conventional P CD cutter blade, this design makes PCD cutter blade be convenient to by holding, and excessively sword both sides are symmetrical, add user to possibility, more wear-resisting, more attractive in appearance.

Relief angle of the present utility model is 20 °, and angle is suitable for, less relative to conventional P CD cutter blade, makes rear knife face larger, has both added the wearability of PCD cutter blade, and improve crudy, also can not be too small and affect the cutting dynamics of Milling Processes.

Facts have proved, the service life of conventional P CD cutter blade is 5000-6000 workpiece/sheet, and the service life of the novel PC D cutter blade that the utility model proposes is 11000-12000 workpiece/sheet, contrast finds, the utility model substantially increases the service life of PCD cutter blade, reduce tool changing, reduce costs.

Accompanying drawing explanation

Fig. 1 is upward view of the present utility model.

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

Fig. 3 is the I part partial enlarged drawing of Fig. 2.

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail.

A kind of novel PC D cutter blade, comprise cutter hub 5 and cutter head 7, wherein, described cutter hub 5 is solid, the thickness h of described cutter hub 5 is 4.76 ± 0.025mm, described cutter hub 5 has rake face 3, rear knife face 4 and side knife surface 8, described rake face 3 is for having the eight-sided formation on four minor faces 2 and four long limits 1, described rake face 3 is provided with three excessive swords 6, described excessive sword 6 is separately positioned on three minor faces 2 of rake face 3, angle theta 1 between transitional edges 2 and the long limit 1 of rake face 3 is in 145 °, the length L of described excessive sword 6 is 2.5mm, described excessive sword 6 both sides and rake face 3 are equipped with fillet R, the radius of described fillet R is 0.5mm, described rear knife face 4 be arranged in parallel with rake face 3, described rear knife face 4 is circular configuration, the diameter d of described rear knife face 4 is 12.7 ± 0.025mm, described cutter hub 5 is provided with relief angle θ 2, described relief angle θ 2 is 20 °, described cutter head 7 is arranged on an other minor face 2 of rake face 3, described cutter head 7 is PCD material, described cutter head 7 has blade face 9 and point of a knife 10, point of a knife 10 place of described cutter head 7 is provided with tangent plane 11, described tangent plane 11 forms corner cut θ 3 with blade face 9, described corner cut θ 3 is 25 °.

The utility model innovatively adopts corner cut passivation point of a knife, and makes geometric parameter and structural design more reasonable, solves tipping, the problem such as not wear-resistant, greatly increases the service life of PCD cutter blade, can reach 11000-12000 workpiece/sheet.

Above are only the utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed in protection domain of the present utility model.

Claims (5)

1. a novel PC D cutter blade, comprise cutter hub and cutter head, it is characterized by, described cutter hub is solid, described cutter hub has rake face, rear knife face and side knife surface, described rake face is the eight-sided formation with four minor faces and four long limits, described rake face is provided with three excessive swords, described excessive sword is separately positioned on three minor faces of rake face, angle theta 1 between transitional edges and the long limit of rake face is in 145 °, described excessive sword both sides and rake face are equipped with fillet R, described rear knife face and rake face be arranged in parallel, described rear knife face is circular configuration, described cutter hub is provided with relief angle θ 2, described relief angle θ 2 is 20 °, described cutter head is arranged on an other minor face of rake face, described cutter head is PCD material, described cutter head has blade face and point of a knife, the point of a knife place of described cutter head is provided with tangent plane, described tangent plane and blade face form corner cut θ 3, described corner cut θ 3 is 25 °.

2. a kind of novel PC D cutter blade as claimed in claim 1, is characterized by, and the thickness h of described cutter hub is 4.76 ± 0.025mm.

3. a kind of novel PC D cutter blade as claimed in claim 1, is characterized by, and the length L of described excessive sword is 2.5mm.

4. a kind of novel PC D cutter blade as claimed in claim 1, is characterized by, and the radius of described fillet R is 0.5mm.

5. a kind of novel PC D cutter blade as claimed in claim 1, is characterized by, and the diameter d of described rear knife face is 12.7 ± 0.025mm.