CN208178536U - Milling cutter - Google Patents

Abstract

The utility model proposes a kind of milling cutters, it includes knife handle and the cutting portion set on described knife handle one end, the cutting portion includes the first end tooth, second end tooth, the first chip space positioned at first end tooth side, and the second chip space positioned at second end tooth side, first end tooth is obliquely installed with the knife handle with second end tooth, and the length of first cutting edge is greater than the length of the second end tooth, the junction of first end tooth and second end tooth forms an arc-shaped cutter head, and the central axis of the cutter head and the milling cutter deviates.The milling cutter improves the stability of milling, avoids leading to crushing knife or breaking because chip removal is unsmooth, to improve service life.

Description

Milling cutter

Technical field

The utility model relates to a kind of cutter, especially a kind of milling cutter.

Background technique

Existing engraving angle cutting tool is when carving characters to workpiece, since the shear blade diameter of milling cutter is small and cuts for facing cut, Cutting force is larger during the cutting process, if point of a knife chip removal is unsmooth, milling cutter is easy to cause the phenomenon that crushing knife, breaking, milling cutter occur Service life it is shorter, so that production cost is higher.

Utility model content

In view of the above situation, it is necessary to a kind of milling cutter is provided, to solve the above problems.

A kind of milling cutter comprising knife handle and the cutting portion set on described knife handle one end, the cutting portion include the first end tooth, Second end tooth, the first chip space positioned at first end tooth side, and the second chip removal positioned at second end tooth side Slot, first end tooth are obliquely installed with the knife handle with second end tooth, and the length of first end tooth is greater than the The length of two end teeth, the junction of first end tooth and second end tooth form an arc-shaped cutter head, the cutter head with The central axis of the milling cutter deviates.

Further, first chip space includes the first clearance surface and the second clearance surface being connected, the first row The one end in bits face is connected with the knife handle, and the other end extends towards the center of the milling cutter, one end of second clearance surface It is connected with first clearance surface, the other end is crossed the central axis of the milling cutter and prolonged towards the direction of second end tooth It stretches.

Further, the tip radius is 0.2~0.6 millimeter.

Further, the groove depth of second clearance surface is 0.8~1.5 times of the tip radius.

Further, the distance at center of the endpoint at center of first end tooth adjacent to the milling cutter to the milling cutter is 1/3 times to 1 times of the tip radius.

Further, first end tooth is described at a distance from the intersection point to the center of the milling cutter of second end tooth The 1/10~1/4 of tip radius.

Further, the distance at center of the endpoint at center of second end tooth adjacent to the milling cutter to the milling cutter is small In the 1/20 of the tip radius.

Further, the knife handle is cylinder.

In above-mentioned milling cutter, the cutter head is arc-shaped, and facing cut is cut and is changed into point, line milling, reduces the resistance of cutting, Improve the stability of milling.Simultaneously as the central axis of cutter head and the milling cutter deviates, the sharp of cutting edge is increased Property, it avoids center from wearing milling cutter sharply because linear velocity is low, while increasing the chip space of the first chip space, avoids because of row It considers to be worth doing unsmooth and leads to crushing knife or breaking, to improve the service life of milling cutter.

Detailed description of the invention

Fig. 1 is the milling cutter sectional perspective schematic diagram in an embodiment of the present invention.

Fig. 2 is the side view of milling cutter shown in FIG. 1.

Fig. 3 is the bottom view of milling cutter shown in FIG. 1.

Main element symbol description

The following detailed description will be further explained with reference to the above drawings the utility model.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work The every other embodiment obtained, fall within the protection scope of the utility model.

It should be noted that it can be directly to separately when an element is considered as " connection " another element One element may be simultaneously present the element being centrally located.When an element is considered as " setting exists " another element, It, which can be, is set up directly on another element or may be simultaneously present the element being centrally located.

Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model The normally understood meaning of the technical staff in domain communicates.Terminology used in the description of the utility model herein only be The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes Any and all combinations of one or more related listed items.

Referring to Fig. 1, the utility model provides a kind of milling cutter 100, for being carved characters to workpiece (not shown) and milling Chamfering.

The milling cutter 100 includes knife handle 10 and the cutting portion 20 set on described 10 one end of knife handle.The knife handle is cut with described Portion 20 is cut to be integrally formed.In present embodiment, the knife handle 10 and the cutting portion 20 are made of hard alloy, but are not limited to This.The knife handle 10 is cylindrical, and the knife handle 10 is for being external in a processing unit (plant) (not shown) to drive the milling cutter 100 It is rotated around central axis A.

The cutting portion 20 includes the first end tooth 21, the second end tooth 22, the first chip space 23 and the second chip space 24.

First end tooth 21 is obliquely installed with the knife handle 10 with second end tooth 22.First end tooth 21 with Second end tooth 22 is oppositely arranged, and the length of first end tooth 21 is greater than the length of the second end tooth 22, therefore, described the One end tooth 21 and the second end tooth 22 are asymmetric design.

A cutter head 25 (being commonly called as the angle R), the knife are formed in the junction of first end tooth 21 and second end tooth 22 First 25 are arc-shaped.

First end tooth 21 includes the major first face 211 and major first flank 212 being connected, second end tooth 22 Including the second rake face 221 being connected and the second flank 222.

First chip space 23 is located at the side of first end tooth 21 and is connected with the major first face 211, First chip space 23 includes the first clearance surface 231 and the second clearance surface 232 being connected, first clearance surface 231 One end is connected with the knife handle 10, and the other end extends towards the center of the milling cutter 100.The one of second clearance surface 232 End is connected with first clearance surface 231, and the other end crosses the central axis A of milling cutter 100 and towards second end tooth 22 Direction extend.First clearance surface 231 is connected with the major first face 211 respectively with second clearance surface 232, Angle between first clearance surface 231 and the major first face 211 is greater than second clearance surface 232 and described first Angle between rake face 211, and the area of first clearance surface 231 is greater than the area of second clearance surface 232.

Second chip space 24 is located at the side of second end tooth 22 and is connected with second rake face 221, One end of second chip space 24 is connected with the knife handle 10, and the other end extends towards the center of the milling cutter 100.It is described Second chip space 24 is oppositely arranged with first chip space 23.

First chip space 23, the second chip space 24 play the role of guiding to metal fillings, thus generated when cutting Metal fillings can be smoothly discharged from first chip space 23 and the second chip space 24.

Referring to Fig. 1 and Fig. 2, the central axis A of the cutter head 25 and the milling cutter 100 is deviated, in this implementation In mode, it is 0.2~0.6 millimeter that cutter head 25, which has tip radius R, the tip radius R,.

Preferably, the intersection point of first clearance surface 231 and second clearance surface 232 to the vertex of the cutter head 25 it Between distance L1 be 0.8~1.5 times of tip radius R.

First chip space 23 is close to the one end at the center of milling cutter 100 and the intersection point of the major first face 211 to the knife The distance between first 25 vertex L2 is the 1/10~1/2 of tip radius R.

Please refer to Fig. 1 and Fig. 3, the center of milling cutter 100 is O, and the length of first end tooth 21 is greater than described second The length of end tooth 22.

Preferably, first end tooth 21 adjacent to the center O of milling cutter 100 endpoint to the milling cutter 100 center O away from From 1/3 times to 1 times that L3 is tip radius R.

The center O distance L4 of first end tooth 21 and intersection point to the milling cutter 100 of second end tooth 22 is institute State the 1/10~1/4 of tip radius R.

Second end tooth 22 adjacent to the center O of milling cutter 100 endpoint to the milling cutter 100 center O distance L5 it is small In the 1/20 of the tip radius R.

The cutting portion 20 of above-mentioned milling cutter 100 includes the first end tooth 21, and the second end tooth 22 is located at 21 side of the first end tooth The first chip space 23, and the second chip space 24 positioned at 22 side of the second end tooth, first end tooth 21 with it is described Second end tooth 22 is obliquely installed with the knife handle 10, and the length of first end tooth 21 is greater than the length of the second end tooth 22, The junction of first end tooth 21 and second end tooth 22 forms arc-shaped cutter head 25, the cutter head 25 and the milling The central axis A of knife 100 is deviated.

Since the cutter head 25 is arc-shaped, facing cut is cut and is changed into point, line milling, reduce the resistance of cutting, promoted The stability of milling.Simultaneously as the central axis A of the cutter head 25 and the milling cutter 100 is deviated, cutting edge is increased Sharpness avoids center from wearing milling cutter 100 sharply because linear velocity is low, while the appearance bits for increasing the first chip space 23 are empty Between, it avoids leading to milling cutter crushing knife or breaking because chip removal is unsmooth, improves the service life of milling cutter 100, reduce production cost.

In addition, those skilled in the art can also do other variations within the spirit of the present invention, certainly, these are according to this reality The variation made of novel spirit should all be included in the utility model range claimed.

Claims (9)

1. a kind of milling cutter comprising knife handle and the cutting portion set on described knife handle one end, it is characterised in that: the cutting portion includes First end tooth, the second end tooth, the first chip space positioned at first end tooth side, and positioned at second end tooth side Second chip space, first end tooth are obliquely installed with the knife handle with second end tooth, and the length of first end tooth Degree is greater than the length of the second end tooth, the one arc-shaped cutter head of junction formation of first end tooth and second end tooth, institute The central axis for stating cutter head and the milling cutter deviates.

2. milling cutter as described in claim 1, it is characterised in that: first end tooth includes the major first face being connected and One flank, second end tooth include the second rake face being connected and the second flank, first chip space with it is described Major first face is connected, and second chip space is connected with second rake face.

3. milling cutter as claimed in claim 2, it is characterised in that: first chip space include the first clearance surface for being connected with One end of second clearance surface, first clearance surface is connected with the knife handle, and the other end extends towards the center of the milling cutter, One end of second clearance surface is connected with first clearance surface, and the other end crosses the central axis and direction of the milling cutter The direction of second end tooth extends.

4. milling cutter as claimed in claim 3, it is characterised in that: the tip radius is 0.2~0.6 millimeter.

5. milling cutter as claimed in claim 4, it is characterised in that: the intersection point of first clearance surface and second clearance surface arrives The distance between vertex of the cutter head is 0.8~1.5 times of the tip radius.

6. milling cutter as claimed in claim 4, it is characterised in that: the endpoint at center of first end tooth adjacent to the milling cutter arrives The distance at the center of the milling cutter is 1/3 times to 1 times of the tip radius.

7. milling cutter as claimed in claim 4, it is characterised in that: the intersection point of first end tooth and second end tooth is described in The distance at the center of milling cutter is the 1/10~1/4 of the tip radius.

8. milling cutter as claimed in claim 4, it is characterised in that: the endpoint at center of second end tooth adjacent to the milling cutter arrives The distance at the center of the milling cutter is less than the 1/20 of the tip radius.

9. milling cutter as described in claim 1, it is characterised in that: the knife handle is cylinder.