CN2832387Y - Small-diameter large-front-angle end mill - Google Patents

Abstract

The end mill consists of a cutter body and three blades mounted on the head of the cutter body, and features that the front surface of each blade is in the same plane as the front mounting surface and the plane shifts the milling cutter center towards the back of the blade by L = (d/2) Sina. Wherein d is the outer diameter of the milling cutter and alpha is the rake angle of the milling cutter. The utility model is used for aluminium part processing had both guaranteed that the blade has great anterior angle and relief angle, prevented to produce and glues the sword phenomenon, improved the machining precision, guaranteed again that the blade has sufficient intensity to the anterior angle sharpening is convenient.

Description

The big anterior angle slotting cutter of minor diameter

Technical field

The utility model relates to the big anterior angle slotting cutter of a kind of minor diameter, belongs to machine tool.

Background technology

Processing work on lathe usually will be used the small diameter solid cutter about φ 20mm, and this milling cutter is equipped with three carbide chips at cutter head body, and the preceding installed surface of blade is by the milling cutter center.During the processing aluminum component, for avoiding producing sticking cutter phenomenon, milling cutter needs bigger anterior angle and relief angle, way commonly used is rake face to be designed to the inclined-plane increase anterior angle, form a vee (seeing accompanying drawing 2) like this between rake face and the preceding installed surface, and this blade strength reduces, and anterior angle sharpening difficulty.

The utility model content

The technical problems to be solved in the utility model provides a kind of blade strength height, and the anterior angle sharpening is the big anterior angle slotting cutter of minor diameter easily, can prevent sticking cutter phenomenon during with this milling cutter processing aluminum component, guarantees machining accuracy.

The technical solution of the utility model is: the big anterior angle slotting cutter of minor diameter, constitute by cutter hub and three blades that are contained in cutter head body, the milling cutter anterior angle is α, relief angle is β, improvements are that the rake face and the preceding installed surface of every blade is same plane, this plane is towards blade back side direction skew milling cutter center, side-play amount $L=\frac{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="Y20052007674500051.png"\; state="\{\{state\}\}">d</figure-callout>}}{2}\mathrm{Sin\&alpha;}.$

Above-mentioned anterior angle α=20 °, relief angle β=16 °.

This slotting cutter departs from milling cutter center certain distance backward with the preceding installed surface of blade, point of a knife is still on the excircle of milling cutter, the angle that the line at point of a knife and milling cutter center forms with the blade rake face is the anterior angle of milling cutter, 20 ° of anterior angles and 16 ° of relief angles had so both been guaranteed, make rake face not stay breach again, thereby the assurance blade strength, and the anterior angle sharpening is convenient.By this slotting cutter processing aluminum component, can prevent sticking cutter phenomenon, guarantee machining accuracy.

Description of drawings

Fig. 1 is the utility model cutter head cross sectional representation;

Fig. 2 is the big anterior angle slotting cutter of a minor diameter cutter head cross sectional representation commonly used at present.

The specific embodiment

As Fig. 1, present embodiment is made of cutter hub and equally distributed three blades 4 that are contained in cutter head body, and the rake face 3 of blade and installed surface 2 are same plane, and this plane is offset the distance at milling cutter center backward $L=\frac{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="Y20052007674500051.png"\; state="\{\{state\}\}">d</figure-callout>}}{2}\mathrm{Sin\&alpha;},$ Wherein d is the milling cutter external diameter, and α is the milling cutter anterior angle, and in addition, β is the milling cutter relief angle, d=20mm in this example, α=20 °, β=16 °.

The present big anterior angle slotting cutter of minor diameter such as Fig. 2 that uses, blade rake face 3 and preceding installed surface 2 form a vee not on same plane.

Claims (2)

1, the big anterior angle slotting cutter of a kind of minor diameter is made of cutter hub and three blades that are contained in cutter head body, and the milling cutter anterior angle is α, relief angle is β, the rake face and the preceding installed surface that it is characterized in that every blade are same plane, and this plane is towards blade back side direction skew milling cutter center, side-play amount $L=\frac{d}{2}\mathrm{Sin\&alpha;}.$

2,, it is characterized in that described anterior angle α=20 °, relief angle β=16 ° by the big anterior angle slotting cutter of the described minor diameter of claim 1.

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