CN101823166B

CN101823166B - Molding milling cutter and molding method

Info

Publication number: CN101823166B
Application number: CN200910300733A
Authority: CN
Inventors: 徐龙
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Shenzhen Fulian Jingjiang Technology Co ltd
Priority date: 2009-03-07
Filing date: 2009-03-07
Publication date: 2012-08-29
Anticipated expiration: 2029-03-07
Also published as: CN101823166A

Abstract

The invention relates to a molding milling cutter comprising a cutter body and a first cutting edge and a second cutting edge which are formed on the cutter body, wherein the first cutting edge and the second cutting edge are staggered in the rotating direction of the cutter body. A cutting face formed when the first cutting edge rotates a circle around the rotating axis of the cutter body insects with the second cutting edge. The invention also provides a method for processing by utilizing the molding milling cutter. The molding milling cutter and the molding method can form two surfaces the joint of which is sharp-angled by one-time processing only. The invention has the advantages of higher processing efficiency and lower cost and is easy to ensure the processing precision.

Description

Profile milling cutter and forming method

Technical field

The present invention relates to a kind of profile milling cutter and forming method, relate in particular to and a kind ofly can on workpiece, form two surfaces that are connected through time processing, and these two surperficial connections be wedge angle profile milling cutter and forming method.

Background technology

Profile milling cutter is generally workpiece and the specialized designs manufacturing of processing given shape; It is generally used for machining angle face, groove surface, special form hole and step surface etc.; The sword type of profile milling cutter cutting edge profile general and workpiece is suitable, so that on workpiece, form required given shape through time processing.When need on workpiece, processing two surfaces that are connected; And when these two surperficial connections are the wedge angle of outwards giving prominence to; If adopt the conventional method design; It is consistent with the workpiece profile to be that the cutting edge sword type of moulding milling cutter needs, the cutting edge that then is used for these two surfaces of moulding will intersect and in the intersection formation to the wedge angle of cutter hub inner recess.Yet in the manufacturing process of milling cutter, difficulty grinding on milling cutter forms the wedge angle to the cutter hub inner recess.

Traditional process above-mentioned in the junction method for two surfaces of outwards outstanding wedge angle; Generally be to process first surface earlier; Again clamping workpiece or adjustment milling cutter position then; On the base material that forms first surface, process second surface, and first surface and second surface are intersected, thereby can form wedge angle in the junction of first surface and second surface.Yet said method needs through twice processing, and needs again clamping workpiece or adjustment milling cutter position, and operating efficiency is lower, and is prone to cause the accumulation of mismachining tolerance, reduces the precision of processing.

Summary of the invention

In view of foregoing, be necessary to provide a kind of and can on workpiece, form two surfaces that are connected through time processing, and these two surperficial connections be wedge angle profile milling cutter and forming method.

A kind of profile milling cutter, it comprises cutter hub and is formed at first cutting edge and second cutting edge on the cutter hub.First cutting edge and second cutting edge are crisscross arranged on the direction of rotation of cutter hub.First cutting edge intersects around rotate a circle formed cutting face and second cutting edge of the rotation of cutter hub.

A kind of forming method is used on workpiece, forming two surfaces that are connected, and it may further comprise the steps: above-mentioned profile milling cutter is provided; Rotate this profile milling cutter also along preset machining path feed, utilize first cutting edge of profile milling cutter and second cutting edge on workpiece, to form first surface and second surface respectively, first surface and second surface intersect and the formation wedge angle in the connection.

Above-mentioned profile milling cutter, first cutting edge and second cutting edge that it is crisscross arranged on the direction of rotation of cutter hub can cut workpiece respectively, and successively on workpiece, process two surfaces, thus these two Plane intersects can form wedge angle in the junction.Utilize above-mentioned profile milling cutter to process,, and can avoid again clamping workpiece or adjustment cutter, thereby can improve working (machining) efficiency and cut down finished cost only through the time processing surface that can on workpiece, to form two connections be wedge angle.

Description of drawings

Fig. 1 is the stereogram of the profile milling cutter of the embodiment of the invention.

Fig. 2 is the front end face view of profile milling cutter shown in Figure 1.

Fig. 3 is that profile milling cutter shown in Figure 1 is from the observable plane of A direction.

Fig. 4 is that profile milling cutter shown in Figure 1 is from the observable plane of B direction.

Fig. 5 is the view that is meshed with workpiece when utilizing profile milling cutter shown in Figure 1 to carry out the milling moulding.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment profile milling cutter of the present invention and the forming method that utilizes this profile milling cutter to process are done further to specify.

See also Fig. 1, the profile milling cutter 100 of the embodiment of the invention comprises cutter hub 11, cutting portion 12 and handle of a knife 13.

Cutter hub 11 is roughly cylinder, and it has rotation a, adds man-hour, and profile milling cutter 100 is the center rotation with rotation a, the central axes of rotation a and cutter hub 11.Cutter hub 11 comprises front end 112 and rear end 114, and cutting portion 12 is formed at front end 112, and handle of a knife 13 is formed at rear end 114.

Handle of a knife 13 can be the staight shank form, also can be the taper shank form, its be used to add man-hour convenient with profile milling cutter 100 clampings to control device, on machine tool chief axis, to keep adding profile milling cutter 100 stability in man-hour.

Cutting portion 12 comprises first cutting edge 121, second cutting edge 123, the 3rd cutting edge 125 and the 4th cutting edge 127.Above-mentioned each cutting edge 121,123,125,127 is all one-body molded with cutter hub 11, and to include with the rotation a of cutter hub 11 be two sword molded lines of symmetrical centre.

Please in the lump referring to Fig. 2 to Fig. 4, first cutting edge 121 is obliquely extended to the outer circumference surface near cutter hub 11 middle parts from the end face of cutter hub 11 front ends 112, its bearing of trend roughly with the rotation a oblique of cutter hub 11, and crooked towards the cutting direction of profile milling cutter 100.When cutter hub 11 rotated a circle around its rotation a, first cutting edge, 121 formed cutting faces 1212 were a conical surface.

Second cutting edge 123 is from outer circumference surface radially the extending to cutter hub 11 inside along cutter hub 11 of cutter hub 11.Second cutting edge 123 roughly is the form of straight sword, and intersects with first cutting edge, 121 formed cutting faces 1212.First cutting edge 121 forms angle (seeing also Fig. 5) between projection and second cutting edge 123 of (longitudinal section of cutter hub 11) in the determined plane of rotation a of second cutting edge 123 and cutter hub 11, and angle is the obtuse angle.

Observe from front end 11 rearward end 12 of cutter hub 11; On the direction of rotation of cutter hub 11; Promptly the rotation a with cutter hub 11 is on the circumference at center; First cutting edge 121 and second cutting edge 123 are crisscross arranged, thereby when moulding milling cutter 100 carried out cut, first cutting edge 121 and second cutting edge 123 successively cut workpiece.In the present embodiment, first cutting edge 121 and the projection in the cross section of second cutting edge, 123 cutter hubs 11 roughly are cross and intersect.

The 3rd cutting edge 125 is formed at the end face of cutter hub 11 front ends 112 and is connected with first cutting edge 121.The 3rd cutting edge 125 is from outer surface radially the extending to cutter hub inside along cutter hub 11 of cutter hub 11.In the present embodiment, two article of the 3rd cutting edge 125 is connected at the rotation a place of cutter hub 11.

The 4th cutting edge 127 is formed at the outer surface of cutter hub 11; The one of which end is connected with the end that second cutting edge 123 is positioned at cutter hub 11 outer surfaces; The other end extends along the direction near handle of a knife 13 in the rotation a of cutter hub 11 direction, and roughly crooked towards the cutting direction of profile milling cutter 100.The 4th cutting edge 127 is roughly vertical each other with second cutting edge 123 with the projection in the determined plane of cutter hub 11 rotation a at second cutting edge 123.

Should be noted that; The sword molded lines of first cutting edge 121, second cutting edge 123, the 3rd cutting edge 125 and the 4th cutting edge 127 does not receive the restriction of embodiment of the invention concrete form; The shape of its sword molded lines can be confirmed according to the external surface shape of the required moulding of workpiece; Can be linear etc. such as above-mentioned sword molded lines for zigzag, wave, on workpiece, to form zigzag or waveform surface.

Above-mentioned each cutting edge 121,123,125,127 and cutter hub 11 are one-body molded, thereby the structure of profile milling cutter 100 is comparatively compact, helps the miniaturization of profile milling cutter 100, to satisfy miniature parts, such as the cut requirement of portable type electronic product housing.

Profile milling cutter 100 can select suitable material to process according to its purposes.Generally speaking, preferable material is intensity and toughness all carbide alloy and high-speed steel preferably.In addition, also can be through forming various dura maters to improve the cutting ability of profile milling cutter 100 on cutter hub 11 surfaces.Purposes according to profile milling cutter 100 can adopt titanium carbide (TiC), TiAlN (AlTiN), TiAlN (TiAlN) or TiCN dura maters such as (TiCN).

The profile milling cutter 100 of the embodiment of the invention can form four surfaces that connect successively through a Milling Process on workpiece, the junction on wherein adjacent two surfaces can be wedge angle, is connected through the very little arc section of radius between these two surfaces in other words.Be that example is explained forming method of the present invention the side of plate workpiece is carried out Milling Process below.

The sketch map that is meshed with workpiece 200 during profile milling cutter 100 cutting workpieces 200 for the embodiment of the invention shown in Figure 5.The method of utilizing 100 pairs of workpiece of profile milling cutter 200 of the embodiment of the invention to carry out Milling Process comprises following basic step:

(1) above-mentioned profile milling cutter 100 is provided, and profile milling cutter 100 is clamped on the control device, on the main shaft such as plain-milling machine or CNC milling machine.Preferable selection provides CNC milling machine and profile milling cutter 100 is clamped on the main shaft of CNC milling machine.

(2) workpiece 200 is clamped in the workbench of milling machine, and mobile profile milling cutter 100 carries out tool setting, to confirm the position of profile milling cutter 100 in workpiece coordinate system.

(3) main axis rotation of milling machine and drive profile milling cutter 100 and rotate around its rotation a, the main shaft of milling machine cuts along the machining path feed of presetting with profile milling cutter 100.First cutting edge 121 and be attached thereto the 3rd cutting edge 125 that connects and on workpiece 200, process first surface 211 and the 3rd surface 215, the second cutting edges 123 and the 4th cutting edge 127 that is attached thereto and reprocess out second surface 213 and the 4th surface 217.Wherein, first surface 211 and second surface 213 intersects, and the part that first surface 211 and second surface 213 define jointly is outside outstanding to workpiece 200.When the milling moulding, the first surface 211 that forms on the workpiece 200 and the material of second surface 213 intersections are earlier after the cutting of first cutting edge 121 and second cutting edge 123, thereby first surface 211 and second surface 213 connections can form wedge angle β.The angle of wedge angle β is by the decision of the relative position between first cutting edge 211 and second cutting edge 213, promptly by projection and angle second cutting edge 123 between the decision of first cutting edge 121 in second cutting edge 123 and the determined plane of rotation a.Can be according to actual needs, the relative position relation and the shape of appropriate design first cutting edge 211 and second cutting edge 213 are to form the wedge angle β of different angles.

In step (3), the machining path of profile milling cutter 100 can be set through CNC milling machine is carried out pre-programmed, and it is stored in controller or the personal control.Certainly, the mode that profile milling cutter 100 control Scheme Selection is also comprised manual control.

With reference to above-mentioned forming method, adopt the profile milling cutter 100 of the single embodiment of the invention time processing to go out four four surfaces 211,213,215,217 that connect successively, and wherein the connection on two surfaces 211,213 is wedge angle β.Utilize profile milling cutter of the present invention and forming method can avoid tool changing or clamping workpiece again, reduce therefore spent man-hour, working (machining) efficiency is provided, and can avoid the error accumulation that causes because of tool setting again, improved machining accuracy.

Be appreciated that; The quantity of the cutting edge of profile milling cutter of the present invention does not receive the restriction of embodiment; Such as; It can only comprise first cutting edge 121 and second cutting edge 123, utilizes this profile milling cutter can on workpiece 200, process first surface 211 and second surface 213, and first surface 211 can form wedge angle equally with second surface 213 connections.Certainly, profile milling cutter of the present invention can also comprise five even more cutting edge, on workpiece, to process satisfactory shape.

In addition, those skilled in the art also can do other variation in spirit of the present invention, and certainly, these all should be included in the present invention's scope required for protection according to the variation that the present invention's spirit is done.

Claims

1. profile milling cutter; It comprises cutter hub and is formed at first cutting edge and second cutting edge on this cutter hub; It is characterized in that: this first cutting edge and second cutting edge are crisscross arranged on the direction of rotation of this cutter hub, and this first cutting edge intersects around rotate a circle formed cutting face and this second cutting edge of the rotation of this cutter hub.

2. profile milling cutter as claimed in claim 1 is characterized in that: this first cutting edge extends from the direction of the edge, end of cutter hub and the rotation oblique of cutter hub, and its rotation around this cutter hub formed this cutting face that rotates a circle is the conical surface.

3. profile milling cutter as claimed in claim 2 is characterized in that: this profile milling cutter also comprises the 3rd cutting edge, and the 3rd cutting edge is connected and radially extending to cutter hub inside along cutter hub with the end that first cutting edge is positioned at the cutter hub end.

4. profile milling cutter as claimed in claim 1 is characterized in that: this second cutting edge is from outer surface radially the extending to cutter hub inside along cutter hub of cutter hub.

5. profile milling cutter as claimed in claim 4 is characterized in that: this profile milling cutter also comprises the 4th cutting edge, and the end that the 4th cutting edge and second cutting edge are positioned at the outer surface of cutter hub is connected and extends along the direction of the rotation that is parallel to cutter hub.

6. profile milling cutter as claimed in claim 1 is characterized in that: this cutter hub is processed by carbide alloy or high-speed steel, and its surface is formed with dura mater, and this dura mater is a kind of in titanium carbide, TiAlN, TiAlN or the TiCN.

7. profile milling cutter as claimed in claim 1 is characterized in that: intersect and the formation wedge angle in the connection on this formed surface of first cutting edge cutting workpiece and this formed surface of second cutting edge cutting workpiece.

8. a forming method is used on workpiece, processing two surfaces that are connected, and it may further comprise the steps:

Provide like any described profile milling cutter in the claim 1 to 7;

Rotate this profile milling cutter also along preset machining path feed, utilize first cutting edge and second cutting edge on workpiece, to form first surface and second surface respectively, this first surface and second surface intersect and the formation wedge angle in the connection.