CN101172307A

CN101172307A - High-speed cutting end milling cutter

Info

Publication number: CN101172307A
Application number: CNA200610051258XA
Authority: CN
Inventors: 孙锡萍
Original assignee: GUIZHOU YUNMA AIRCRAFT MANUFACTURER
Current assignee: GUIZHOU YUNMA AIRCRAFT MANUFACTURER
Priority date: 2006-10-30
Filing date: 2006-10-30
Publication date: 2008-05-07

Abstract

The invention relates to a mechanically processing high speed cutting end-milling cutter, which is characterized in that the included angle of the helical angle of a cutting chin and an axial line plane is 45 to 50 degrees; the diameter of the core segment of a knife edge section is 2/3 D-1, or the core segment of a cone is adopted. The helical angle of the cutting edge is increased, and the cutting performance of the cutter is improved. The rigidity of the cutter is improved through adopting the way of increasing the diameter of the core segment or the core segment of the cone. The improvement of the structure leads the cutter to keeping good chip holding space of a chip holding flute while the rigidity of the core segment is improved; and the guarantee is provided for the high-efficient usage of a numerically-controlled machine tool.

Description

High-speed cutting end milling cutter

Technical field:

The present invention relates to the machine tools field, a kind of specifically high-speed cutting end milling cutter tool that is used for numerical controlled machinery processing.

Technical background:

At present in machining, especially at the numerical controlled machinery manufacture field.Slotting cutter is the cutter commonly used of Digit Control Machine Tool always, and its structure is made up of knife bar and cutting blade.The helical angle of its cutting edge is generally 30 °～35 °, and core diameters is 1/2D+1, and tooth depth is (D-2/3D+r)/2 (D is that milling cutter diameter, r are the root R value).The weak point of this structure is, when using such cutter that whole thin-walled parts is carried out Milling Process, its blade of cutter easily produces and fractures, though after reducing adjustment through the cutting data to its cutting, though cutter increases service time to some extent, the phenomenon that the cutter blade fractures still occurs.Cause the pause tool changing in the process, make piece surface produce cut, connect defective such as tool marks mark, cause the defective of product, can increase the usage quantity of cutter simultaneously, increased working strength of workers and workload, reduced economic benefit of enterprises.

Summary of the invention:

The technical problem that solves:

For solving deficiency of the prior art, the invention provides the not high-speed cutting end milling cutter of frangibility of a kind of blade part.

Technical scheme:

High-speed cutting end milling cutter partly is made up of knife bar and blade two.In order to improve the rigidity of cutter, the W angle on the helical angle of cutting edge and axis plane is 45 °～50 °; The core diameters of blade section adopts and strengthens core or cone core, the core diameters d of blade section is 2/3 D-1, the tooth depth amount is (D-3/4D+r)/2, or the core of blade section adopts cone shape, is 2 °～3 ° from core diameters limit, blade termination to the β angle that is tapering face and slotting cutter axis the knife bar position.

Beneficial effect:

The present invention adopts the helical angle that increases cutting edge, the core diameters that strengthens the blade section to improve integrally-built rigidity; The change of structure still kept the good appearance of chip pocket cut the space be convenient to row cut; The helical angle that strengthens cutting edge has improved the cutting ability of cutter, helps the processing of thin-walled parts.For the efficient use of Digit Control Machine Tool provides assurance.

Description of drawings:

The drawing of accompanying drawing is described as follows:

Fig. 1 is that master of the present invention looks schematic diagram;

Fig. 2 is that Fig. 1 is along the A-A generalized section;

Fig. 3 is that Fig. 1 is along the B-B generalized section;

Fig. 4 is that Fig. 1 is along another example cross-section schematic diagram of B-B.

The specific embodiment:

The present invention will be described below in conjunction with accompanying drawing.

Fig. 1, Fig. 2 and shown in Figure 3, high-speed cutting end milling cutter partly is made up of knife bar and two of blades.The helical angle of cutting edge (1) and the W angle on axis plane are 45 °～50 °; The core of blade section (2) diameter is made as 2/3 D-1; The tooth depth amount is (D-3/4D+r)/2.

Fig. 4 is another example of the present invention, and the core of blade section (2) also can adopt cone shape, is 2 °～3 ° from the diameter limit of blade termination core (2) to the β angle that is tapering face and slotting cutter axis the knife bar position.

Claims

1. a high-speed cutting end milling cutter partly is made up of knife bar and blade two, and it is characterized in that: the helical angle of cutting edge (1) and the angle on axis plane are 45 °～50 °; The core of blade section (2) adopts and strengthens core diameters or cone core.

2. according to the described a kind of high-speed cutting end milling cutter of claim 1, it is characterized in that: the core of blade section (2) diameter is 2/3D-1, and the tooth depth amount is (D-3/4D+r)/2; Or the angle of the cone face of the cone core (2) of blade section and slotting cutter axis is 2 °～3 °.