CN204075336U - Milling cutter - Google Patents

Abstract

A kind of milling cutter, comprises a shank for the clamping of milling cutter, has the cutting portion of the cell body not establishing both sides sidewall, and for being connected the transition part of shank and cutting portion; Along the blade side direction that described cutting portion is axially parallel, at least one piece of arcuate blade is set.The utility model milling cutter, have employed the open cell body not establishing both sides sidewall, adds the rigidity of tiny footpath milling cutter fluting; Axially at least one piece of arcuate blade is set in parallel side along cutting portion, achieves and arc Milling Machining is carried out to tiny groove.

Description

Milling cutter

Technical field

The utility model relates to a kind of process tool being applicable to industry and cutting, and particularly relates to a kind of milling cutter, the arc Milling Machining of applicable tiny groove side.

Background technology

Cutter is the instrument for machining in machine-building, also known as cutting element.Cutter due to the overwhelming majority is that machine is used, substantially all for cutting metal material, so " cutter " one word be generally just interpreted as metal cutting tool.But material science develops, various material is also able to extensive use in the production and processing of product, as: engineering plastics and carbon fibre composite etc. (CN203401118U).Cutter can be divided into by the form of workpiece machining surface: process the cutter of various outer surface, aperture knife tool, threading tool, gear cutting tool and cutting off tool etc. several.

The component of Milling Machining in field of machining is becoming more and more important, progressively instead of other processing modes such as car, brill to a certain extent.Processing cambered surface or sphere need to use the milling cutter with bulb to carry out Milling Machining.For the arc Milling Machining of tiny groove side, be limited to the form of groove, rose cutter has been difficult to.

Utility model content

An object of the present utility model is to provide a kind of milling cutter, the arc Milling Machining of tiny groove side.

The metal that the utility model is mentioned is a kind of material, its contain free electron and there is gloss (namely to visible ray strong reflection), be rich in ductility, the easy character such as conduction, heat conduction.These materials or be mainly simple substance (both comprised and be recorded in the periodic table of elements, and also comprised thus obtained), or primarily of the alloy of several formation, common as: but be not limited only to carbon steel, aluminium alloy, copper alloy and kirsite etc.Be to be understood that, mainly refer to that this kind of material accounts for the overwhelming majority, but do not get rid of the situation that it has the compound form existence such as such as small amounts thing, sulfide and chloride.

The nonmetallic materials mentioned of the utility model as: but be not limited only to plastics, glass, composite fibre and cermet etc.

The engineering plastics that the utility model is mentioned, refer to that a class can as structural material, mechanical stress is born in wider temperature range, the high performance macromolecular material used in comparatively harsh Chemical Physics environment, there are good mechanical performance and dimensional stability, still its premium properties can be kept under high and low temperature, can as the plastics of engineering structure part.Common as: but be not limited only to Merlon, polyamide, polyimides, polyformaldehyde, sex change polyphenylene oxide, polyphenylene sulfide, poly-aryl ester, unsaturated polyester (UP), phenola plastics, epoxy plastics and Acrylic plastic etc.

The fibrous composite that the utility model is mentioned, be a kind of matrix by continuous phase and formed by the phase reinforcement that matrix contains, wherein with materials such as glass fibre, carbon fiber, boron fibre, aramid fiber, silicon carbide fibre, asbestos fibre, whisker, wire and hard particulates for the compounded material of reinforcement.The matrix material often had as: but be not limited only to synthetic resin, rubber, pottery, graphite, carbon, aluminium, magnesium, copper, titanium and titanium alloys etc., but especially carbon fibre composite.

The cermet that the utility model is mentioned is the composite that a class is made up of with Metal Phase or alloy one or more ceramic phases, its cermet that pottery substantially can be divided into be matrix and take Metal Phase as the cermet of matrix.Ceramic phase generally refers to refractory oxide (as: but being not limited only to aluminium oxide, beryllium oxide, magnesia and zirconia etc.) and infusible compound (as: but being not limited only to titanium carbide, tungsten carbide, ramet, boron carbide, zirconium diboride, titanium diboride and tantalum diboride etc.).Metal Phase then mainly transition elements (as: iron, cobalt, nickel, chromium, molybdenum, tungsten, vanadium, niobium and tantalum etc.) or their alloy.Ceramic phase accounts for 15% ~ 85% of volume wherein.

Common pottery is that the cermet of matrix is as oxide base cermet, for matrix with aluminium oxide, zirconia, magnesia, beryllium oxide and thorium oxide etc., the material (as: aluminium oxide-tungsten-chromium cermet, zirconia-titanium, alumina-silica magnesium-iron, aluminium oxide-molybdenum and thorium oxide-titanium oxide-chromium-molybdenum etc.) that they and tungsten, chromium or cobalt etc. are combined into, has high temperature resistant, the advantage such as chemical resistance of concrete, high mechanical properties and good heat conductive performance; Carbide-base ceramics is bondd by carbide (as: titanium carbide, carborundum and tungsten carbide etc.) and metal to form; Nitride based cermet, has superhard, thermal shock resistance and good high temperature creep, as: titanium nitride, boron nitride, silicon nitride and tantalum nitride etc., and silicide based ceramic metal and boride-base cerment etc.

A kind of milling cutter that the utility model provides, comprises

Shank, it is for the clamping of milling cutter;

Transition part, for being connected shank and cutting portion, adapts to the change of various outer diameter;

Cutting portion, comprises cell body and blade;

Milling cutter provided by the invention belongs to tiny footpath milling cutter, and the external diameter of its cutting portion is less than 3mm usually.

Cell body of the present invention is interpreted as the open cell body not establishing both sides sidewall, comprises bottom land, cell body machined surface and is connected pars convoluta.Wherein, the both sides of the edge of bottom land are crossing with cutting portion lateral surface; Cell body machined surface be cell body on cutting portion because of the machined surface that cutting produces, formed by this machined surface and bottom land, dihedral angle should be more than or equal to 80 degree, and is less than or equal to 130 degree; Being connected pars convoluta is that radius of curvature is less than 4 bends once, with at the bottom of connecting groove and cell body machined surface.

When facing observation trench bottom, the axial angle of cell body machined surface and cutting portion is more than or equal to 15 degree, and is less than or equal to 90 degree.

In order to strengthen the rigidity of cutting portion, the cutting portion without fluting arranges cutting edge, and its rake face is back on bottom land.

For adapt to processing needs, also by by the prefabricated cutting edge veneer of unlike material (as: diamond) in cutting portion.Meanwhile, in order to strengthen the rigidity of cutting portion, also should note by the rake face of cutting edge and cell body opposing.

For adapting to the needs of processing, along the blade side direction that cutting portion is axially parallel, at least one piece of arcuate blade is set, to adapt to the arc Milling Machining operation of tiny groove side.According to the requirement of occasion to be processed, can also along the axially parallel laterally disposed many pieces of arcuate blades of blade of cutting portion, as: more than 2 pieces or 2 pieces.

The beneficial effect that technical solutions of the utility model realize:

The milling cutter that the utility model provides, have employed the open cell body not establishing both sides sidewall, by reducing the length of the transition portion of groove, thus adding the rigidity of tiny footpath milling cutter fluting, enhancing the durability of cutter, thus reducing the processing cost of workpiece.

The milling cutter that the utility model provides, axially arranges at least one piece of arcuate blade in parallel side along cutting portion, tiny groove side is processed and is achieved, solve a difficult problem for conventional rose cutter processing.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model milling cutter one embodiment;

Fig. 2 is the structural representation of another angle of milling cutter shown in Fig. 1;

Fig. 3 is the structural representation of another embodiment of the utility model milling cutter cutting portion;

Fig. 4 is the structural representation of another embodiment of the utility model milling cutter cutting portion;

Fig. 5 is the structural representation of another embodiment of the utility model milling cutter cutting portion;

Fig. 6 is the structural representation of another embodiment of the utility model milling cutter cutting portion;

Fig. 7 be another embodiment of the utility model milling cutter structural representation.

Detailed description of the invention

The technical solution of the utility model is described in detail below in conjunction with accompanying drawing.The utility model embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical scheme of utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in right of the present utility model.

Fig. 1 and Fig. 2 is the structural representation of the present embodiment milling cutter one embodiment.Milling cutter comprises a shank 100 and cutting portion 200.Shank 100 is for the clamping of milling cutter, easy to use.The external diameter of the present embodiment cutting portion is less than 3mm usually, and therefore transition part 300 is for being connected shank 100 and cutting portion 200, to adapt to shank 100 and cutting portion 200 larger difference on external diameter.Suitable transition part is round table-like, and one end that its external diameter is larger is connected with shank 100, and one end that external diameter is less is connected with cutting portion 200.

The usual rigidity of blade of tiny footpath milling cutter is more weak, is easy to fracture.Fig. 3 is the structural representation of another embodiment of the utility model milling cutter cutting portion, and in the present embodiment, the cell body 210 of cutting portion 200 is the open cell body not establishing both sides sidewall, and the both sides of the edge of bottom land 211 are crossing with cutting portion lateral surface.In the processing of cell body, cutting portion produces cell body machined surface 212 by emery wheel cutting, and formed by this machined surface and bottom land 211, dihedral angle 214 should be more than or equal to 90 degree, and is less than 135 degree (see 4).

As shown in Figure 5 and Figure 6, when facing observation trench bottom, the axial angle 215 of cell body machined surface and cutting portion is more than or equal to 15 degree, and is less than or equal to 90 degree.

In order to strengthen the rigidity of cutting portion, without fluting cutting portion on cutting edge is being set, its rake face and cell body opposing.Fig. 7 is the structural representation of another embodiment of the utility model milling cutter, and as shown in Figure 7, milling cutter comprises a shank 100, cutting portion 200 and transition part 300.The cutting portion 230 without fluting is located at by cutting edge, its rake face 212 is opposing with the cell body 210 comprising bottom land, namely when milling cutter processes, rake face 212 processing work of cutting portion 230 to an aspect motion front (be counter clockwise direction in Fig. 7), and the bottom land of cell body 210 along rake face 212 direction of motion rear.

Be connected pars convoluta 213 bend that is less than 4 for radius of curvature, with at the bottom of connecting groove 211 and cell body machined surface 212.

As shown in Figure 1, for adapting to the needs of processing, blade 220 comprises at least one piece of arcuate blade 221, and it is laterally disposed along the blade that cutting portion is axially parallel.Also by by unlike material (as: diamond) prefabricated arcuate blade 400 veneer in cutting portion (see Fig. 2), with adapt to process needs.

The present embodiment is obtained the performance that milling cutter and conventional ball cutter process same material to be shown in Table 1.

Table 1

Claims (6)

1. a milling cutter, is characterized in that comprising

Shank, it is for the clamping of milling cutter;

Transition part, for being connected shank and cutting portion, adapts to the change of various outer diameter;

Cutting portion, comprises cell body and blade;

Described cell body is the open cell body not establishing both sides sidewall;

Along the blade side direction that described cutting portion is axially parallel, at least one piece of arcuate blade is set.

2. milling cutter according to claim 1, is characterized in that described cell body comprises

Bottom land, its both sides of the edge are crossing with described cutting portion lateral surface;

Cell body machined surface is the machined surface that cutting cell body produces on described cutting portion;

Be connected pars convoluta, for radius of curvature is less than or equal to the bend of 4, with at the bottom of connecting groove and cell body machined surface.

3. milling cutter according to claim 2, is characterized in that formed by described machined surface and described bottom land, dihedral angle should be more than or equal to 80 degree, and is less than or equal to 130 degree.

4. milling cutter according to claim 2, it is characterized in that arranging cutting edge on the described cutting portion without fluting, the rake face of described cutting edge is back on described bottom land.

5. milling cutter according to claim 1, is characterized in that the external diameter of described cutting portion is less than 3mm usually.

6. milling cutter according to claim 1, is characterized in that described arcuate blade is 2 pieces.