CN210334503U

CN210334503U - Special milling cutter

Info

Publication number: CN210334503U
Application number: CN201921066671.2U
Authority: CN
Inventors: 谭浩文; 王倩
Original assignee: Joeben Diamond Tool Co ltd
Current assignee: Joeben Diamond Tool Co ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-04-17
Anticipated expiration: 2029-07-09

Abstract

The utility model discloses a special milling cutter for form right angle step at the work piece border, special milling cutter includes bar-like cutter body (5), and the shaping in first tool bit (1), second tool bit (4), first balanced portion (3) and the balanced portion of second (2) of the front end of cutter body (5), first tool bit the second tool bit first balanced portion with the balanced portion of second is the cross distribution in the front end of cutter body, first tool bit with the second tool bit all is the slice, the blade of first tool bit with the blade of second tool bit all is located the lateral part, highly being less than of first tool bit the height of second tool bit, the width of first tool bit is greater than the width of second tool bit. The milling cutter can process right-angle steps at the edges of workpieces, the vibration is small during working, and the smooth finish of the surfaces of the processed right-angle steps is good.

Description

Special milling cutter

Technical Field

The utility model relates to a milling cutter specifically is a special milling cutter that is used for forming right angle step at the work piece border.

Background

Some products are designed with right angle steps at the edges for decorative purposes. At present, the products are generally molded. There is a need to provide a special milling cutter so that such right-angled steps can be machined by a numerically controlled machine tool.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a special milling cutter, this special milling cutter can be through digit control machine tool processing right angle step, and milling cutter is longe-lived, and the smooth finish on the right angle step surface after processing moreover is better.

In order to achieve the above purpose, the specific technical solution of the present invention is as follows:

a special milling cutter is used for forming right-angle steps at the edge of a workpiece and comprises a rod-shaped cutter body (5), and a first cutter head (1), a second cutter head (4), a first balance part (3) and a second balance part (2) which are formed at the front end of the cutter body (5), wherein the first cutter head (1), the second cutter head (4), the first balance part (3) and the second balance part (2) are distributed at the front end of the cutter body (5) in a cross shape, the first cutter head (1) and the second cutter head (4) are both in a sheet shape, the cutting edge of the first cutter head (1) and the cutting edge of the second cutter head (4) are both positioned at the side part, the height of the first cutter head (1) is smaller than that of the second cutter head (4), the width of the first cutter head (1) is larger than that of the second cutter head (4), and the height refers to the size in the axis direction of the cutter body, the width refers to a dimension in a diameter direction of the cutter body.

When the milling cutter is used, the front end of the milling cutter is moved to one end part of a workpiece, the axis of the cutter body is aligned with the edge to be machined of the workpiece, the milling cutter is controlled to rotate at a high speed, the milling cutter is driven to move along the edge to be machined of the workpiece, the cutting edge of the first cutter head and the cutting edge of the second cutter head respectively cut different parts of the edge to be machined of the workpiece, and therefore right-angled steps are formed on the edge to be machined of the workpiece.

Preferably, the cutting edge of the first cutter head (1) and the cutting edge of the second cutter head (4) each have a first clearance angle and a second clearance angle, the first clearance angle being 8 degrees, the second clearance angle being 20 degrees.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

the milling cutter is provided with the first cutter head and the second cutter head, and right-angle steps can be machined at the edge of a workpiece. Meanwhile, the milling cutter is provided with the first balance part and the second balance part, so that the vibration of the milling cutter during working can be greatly reduced, and the smoothness of the machined step surface is better. In addition, above-mentioned first tool bit and second tool bit cross arrangement, the blade of first tool bit and the blade of second tool bit can not contact with the work piece simultaneously, and the resistance that milling cutter received is less, therefore life is longer.

Drawings

FIG. 1 is a schematic structural diagram of a special milling cutter according to an embodiment;

FIG. 2 is a schematic illustration of the first and second relief angles of the cutting edge of the first cutting tip thereof;

FIG. 3 is a schematic view of a workpiece;

FIG. 4 is a schematic view showing the positions of a milling cutter and a workpiece during machining;

fig. 5 is a schematic view of a right angle step formed at the edge of a workpiece.

Reference numerals: 1. a first cutter head; 2. a second balance section; 3. a first balance part; 4. a second cutter head; 5. a cutter body; 6. a first relief angle; 7. a second relief angle; 8. a workpiece; 81. a right-angle step.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 shows the structure of a special milling cutter of an embodiment, which is used for forming right-angled steps on the edge of a workpiece. As shown in fig. 1, the special milling cutter includes: the cutter body 5, and the first cutting head 1, the second cutting head 4, the first balancing part 3 and the second balancing part 2 which are formed at the front end of the cutter body 5.

Wherein, the cutter body 5 is a rod-shaped structure. The utility model discloses a cutter head, including cutter body 5, first tool bit 1, second tool bit 4, first balanced portion 3 with second balanced portion 2 is the cross distribute in the front end of cutter body 5, first tool bit 1 with second tool bit 4 all is the slice, the blade of first tool bit 1 with the blade of second tool bit 4 all is located the lateral part, the height of first tool bit 1 is less than the height of second tool bit 4, the width of first tool bit 1 is greater than the width of second tool bit 4. The height is a dimension in an axial direction of the cutter body, and the width is a dimension in a diameter direction of the cutter body.

The first and

second relief angles

6, 7 of the cutting edge of the primary cutting tip 1 are shown in fig. 2. As shown in fig. 2, the cutting edge of the first cutter head 1 has a first clearance angle 6 and a second clearance angle 7, the first clearance angle 6 being 8 degrees, and the second clearance angle 7 being 20 degrees. Similarly, the second tool bit 4 has a first clearance angle 6 and a second clearance angle 7, the first clearance angle 6 being 8 degrees, and the second clearance angle 7 being 20 degrees.

Fig. 3 schematically shows the workpiece 8 before machining. The position of the milling cutter with the workpiece 8 during machining is shown in fig. 4, and the right-angled step 81 formed at the edge of the workpiece 8 is shown in fig. 5. The processing procedure is described below with reference to fig. 3 to 5:

as shown in fig. 4, in use, the front end of the milling cutter is moved to one end (outer end in fig. 4) of the workpiece 8, the axis 9 of the cutter body is aligned with the edge to be machined of the workpiece 8, the milling cutter is controlled to rotate at a high speed, the milling cutter is driven to move inwards along the workpiece 8, namely, along the edge to be machined of the workpiece 8, and the cutting edges of the first and second tool bits cut different parts of the edge to be machined of the workpiece 8, so that a right-angle step is formed on the edge to be machined of the workpiece 8, as shown in fig. 5.

As can be seen from the above, the special milling cutter has the first cutter head 1 and the second cutter head 4, and can machine the right-angled steps 81 on the edge of the workpiece 8. Meanwhile, the special milling cutter is provided with the first balance part 3 and the second balance part 2, so that the vibration of the milling cutter during working can be greatly reduced, and the smoothness of the machined step surface is better. In addition, the first cutter head 1 and the second cutter head 4 are arranged in a crossed manner, the cutting edge of the first cutter head 1 and the cutting edge of the second cutter head 4 cannot be contacted with the workpiece 8 at the same time, and the milling cutter is low in resistance during working, so that the service life is long.

The present invention has been described in detail with reference to the specific embodiments, and the detailed description is only for assisting the skilled person in understanding the content of the present invention, and can not be understood as the limitation of the protection scope of the present invention. Various decorations, equivalent changes and the like which are performed on the scheme by the technical personnel in the field under the conception of the invention are all included in the protection scope of the invention.

Claims

1. A special milling cutter is used for forming right-angled steps at the edge of a workpiece and is characterized by comprising a rod-shaped cutter body (5), a first cutter head (1), a second cutter head (4), a first balance part (3) and a second balance part (2) which are formed at the front end of the cutter body (5), wherein the first cutter head (1), the second cutter head (4), the first balance part (3) and the second balance part (2) are distributed at the front end of the cutter body (5) in a cross shape, the first cutter head (1) and the second cutter head (4) are both in a sheet shape, the cutting edge of the first cutter head (1) and the cutting edge of the second cutter head (4) are both positioned at the side parts, the height of the first cutter head (1) is smaller than that of the second cutter head (4), and the width of the first cutter head (1) is larger than that of the second cutter head (4), the height is a dimension in an axial direction of the cutter body, and the width is a dimension in a diameter direction of the cutter body.

2. The special milling cutter according to claim 1, wherein the cutting edge of the first cutter head (1) and the cutting edge of the second cutter head (4) each have a first clearance angle of 8 degrees and a second clearance angle of 20 degrees.