CN111112711A

CN111112711A - Milling cutter piece and have its milling cutter dish

Info

Publication number: CN111112711A
Application number: CN201811295982.6A
Authority: CN
Inventors: 韩琦; 张宗超
Original assignee: Beijing Worldia Diamond Tools Co ltd
Current assignee: Beijing Worldia Diamond Tools Co ltd
Priority date: 2018-11-01
Filing date: 2018-11-01
Publication date: 2020-05-08
Anticipated expiration: 2038-11-01
Also published as: CN111112711B

Abstract

The invention provides a milling insert and a milling cutter disc having the same. The milling insert comprises: a base body, the base body has a first end face, a second end face and a side surface located between the first end face and the second end face; A pressing groove is provided on the first end surface, and the pressing groove is used to cooperate with the mounting piece to fix the base body; a plurality of cutter heads are symmetrically arranged on the side surface of the base body according to the center of the rotation axis of the base body. The technical solutions provided in this application can solve the problems of low strength and easy damage in the prior art.

Description

Milling cutter piece and have its milling cutter dish

Technical Field

The invention relates to the technical field of machining, in particular to a milling cutter blade and a milling cutter disc with the same.

Background

At present, a milling cutter is a rotary cutter having one or more milling cutter blades, which intermittently cut off the allowance of a workpiece in sequence by each milling cutter blade, and is mainly used for machining planes, steps, grooves, formed surfaces, cutting off workpieces, and the like on a milling machine. In order to reuse the cutter body of the milling cutter, the existing milling cutter mostly adopts a combined structure of a milling cutter blade and a milling cutter.

The existing milling cutter blade is provided with a plurality of cutter heads, and the milling cutter blade can rotate by taking a fixing part in the mounting through hole as a rotating shaft through the mounting through hole, so that different technological requirements can be met. However, the existing milling cutter blade has low strength, is easy to damage and has short service life.

Disclosure of Invention

The invention provides a milling cutter blade and a milling cutter disc with the same, and aims to solve the problems that in the prior art, the strength is low and the milling cutter blade is easy to damage.

According to one aspect of the present invention, there is provided a milling insert comprising: the base body is provided with a first end face, a second end face and a side face, wherein the first end face and the second end face are oppositely arranged, the side face is positioned between the first end face and the second end face, the first end face is provided with a pressing groove, and the pressing groove is used for being matched with the mounting piece to fix the base body; the plurality of cutting heads are arranged on the side surface of the base body in a manner of being centrosymmetric with the rotation axis of the base body.

Furthermore, the first end face is also provided with a limiting groove, the limiting groove is arranged in the pressing groove, and the pressing groove is divided into a plurality of pressing faces which are symmetrically arranged by the limiting groove.

Further, the pressing surface comprises a first pressing surface and a second pressing surface, the first pressing surface and the second pressing surface are arranged in a central symmetry mode by taking the limiting groove as a center, and the first pressing surface and the second pressing surface are both curved surfaces.

Further, the pressing surface comprises a third pressing surface, a fourth pressing surface, a fifth pressing surface and a sixth pressing surface, the third pressing surface and the fourth pressing surface are located on one side of the limiting groove, and the fifth pressing surface and the sixth pressing surface are located on the other side of the limiting groove.

Further, the milling cutter blade comprises two cutter heads, two mounting grooves are formed in the side face of the milling cutter blade, and the two cutter heads and the two mounting grooves are arranged in a one-to-one correspondence mode.

Furthermore, the side face comprises a first folding face and a second folding face which are sequentially arranged along the thickness direction of the base body, an included angle is formed between the first folding face and the second folding face, the joint of the first folding face and the second folding face protrudes out of the boundary of the first end face on the projection of the first end face towards the second end face, and the mounting groove is located at the joint.

Furthermore, on the projection of the first end surface towards the second end surface, the cutter head protrudes out of the first folding surface, and a chip breaking structure is formed between the cutter head and the first folding surface.

Furthermore, the included angle between the central line of the limiting groove and the central line of the base body along the length direction is 0-30 degrees.

Further, the pressing surface is a spherical surface, and the diameter range of the spherical surface is 5-20 mm.

Furthermore, the side surfaces comprise two first side surfaces and two second side surfaces, the two first side surfaces are correspondingly arranged, the two second side surfaces are correspondingly arranged, each tool bit comprises a first tool section and a second tool section which are connected with each other, the first tool section is located on the first side surface of the base body, the second tool section is located on the second side surface of the base body, a positioning structure is further arranged on the second side surface close to the second tool section, and the positioning structure is used for being matched and positioned with the fastening piece.

Further, the second end face is a curved surface.

According to another aspect of the present invention, a milling cutter disc is provided, the milling cutter disc including the milling insert provided above.

Further, the second end face of the milling blade is a curved surface, the milling cutter disc is provided with an installation groove, the milling blade is arranged in the installation groove, and the side wall of the installation groove, corresponding to the second end face, is a curved surface so that the side wall of the installation groove is attached to the second end face.

Furthermore, the milling cutter disc is provided with a plurality of installation positions and a plurality of milling cutter blades, and the plurality of milling cutter blades are arranged in one-to-one correspondence with the installation positions.

Further, the milling cutter disc comprises a body, a plurality of installation positions are annularly arranged on the body, the body comprises a plurality of fan-shaped blocks, and the milling heights of at least two fan-shaped blocks in the plurality of fan-shaped blocks are different.

By applying the technical scheme of the invention, the milling blade comprises a base body and a cutter head, wherein the first end surface of the base body is provided with a pressing groove, and the base body is fixed by matching the mounting piece and the pressing groove during mounting. The volume that the groove of compacting accounts for the base member is less than current installation through-hole in this structure, consequently can increase the intensity of base member when satisfying fixed base member, makes the base member not fragile, has prolonged milling cutter piece's life.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 illustrates a perspective view of a milling insert provided in accordance with an embodiment of the present invention;

fig. 2 shows a front view of the milling insert of fig. 1;

FIG. 3 shows a top view of the milling insert of FIG. 1;

FIG. 4 shows a cross-sectional view at A-A in FIG. 3;

fig. 5 shows a top view of a milling insert provided in accordance with yet another embodiment of the present invention;

fig. 6 shows a cross-sectional view of the milling insert of fig. 5;

fig. 7 shows a schematic view of the assembly of the milling insert.

Wherein the figures include the following reference numerals:

10. a substrate; 11. a first end face; 12. a second end face; 13. a side surface; 13a, a first folded surface; 13b, a second folded surface; 13c, a positioning structure; 20. a compaction groove; 30. a cutter head; 40. a limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-4, an embodiment of the present invention provides a milling insert comprising: a base body 10 and a tool tip 30. The base body 10 has a first end face 11, a second end face 12 and a side face 13 between the first end face 11 and the second end face 12, the first end face 11 is provided with a pressing groove 20, and the pressing groove 20 is used for being matched with a mounting piece to fix the base body 10. The milling insert comprises a plurality of cutting heads 30, which cutting heads 30 are arranged symmetrically with respect to the rotational axis of the basic body 10 on the side of the basic body 10. When the milling cutter blade is installed and clamped, the installation part is matched and clamped with the pressing groove 20, so that the position of the milling cutter blade can be fixed, and when the cutter head needs to be replaced, the installation part is only required to be removed, the base body 10 is rotated, and then the installation part is matched and clamped with the pressing groove 20. The second end surface 12 may be a plane or a curved surface, and in order to improve the stability of fixing the milling cutter blade and increase the contact area between the milling cutter blade and the milling cutter head, the second end surface 12 is set to be a curved surface.

With the milling insert provided by the present embodiment, the milling insert comprises a base body 10 and a cutter head 30, wherein the first end surface 11 of the base body 10 is provided with a pressing groove 20, and the base body 10 is fixed by a mounting member cooperating with the pressing groove 20 during installation. In the structure, compared with the existing installation through hole, the pressing groove 20 occupies a smaller volume of the base body 10, so that the strength of the base body 10 can be increased while the base body 10 is fixed, the base body 10 is not easy to damage and break, and the service life of the milling cutter blade is prolonged. Moreover, the pressing force can act on the groove through the pressing groove 20 and be decomposed into two-direction force, namely pressing force and directional force, so that the directional performance of the milling cutter blade can be better, and the problem of axial jumping between the installation through hole and a fastener in the prior art is solved. The milling cutter blade is fixed through the pressing groove 20, so that the milling cutter blade is convenient to adjust, and the flexibility of blade installation is improved.

Specifically, a limiting groove 40 is further arranged on the first end surface 11, the limiting groove 40 is arranged in the pressing groove 20, and the pressing groove 20 is divided into a plurality of symmetrically arranged pressing surfaces by the limiting groove 40. Through set up spacing groove 40 in compressing tightly groove 20, can be spacing through spacing groove 40 and installed part cooperation, increase the frictional force between installed part and the spacing groove 40, prevent that the milling cutter piece from scattering away in the course of working.

The pressing surface comprises a first pressing surface and a second pressing surface, the first pressing surface and the second pressing surface are symmetrically arranged by taking the limiting groove 40 as a center, and the first pressing surface and the second pressing surface are curved surfaces. In particular, the first and second compression surfaces may be convex or concave. Set up to the curved surface through will compressing tightly the face and can increase the cooperation area who compresses tightly face and installed part to can increase the atress direction of installed part, when compressing tightly the face for the curved surface, can make the installed part at circumference atress through curved surface annular laminating installed part, and then can make locking force bigger, the milling cutter piece can be fixed well on the milling cutter dish. And adopt above-mentioned structure can make installed part circumference atress to can make the installed part can not break easily because of one-way atress, can disperse the concentrated stress of installed part through this structure, prolonged the life of installed part.

In the present embodiment, the milling insert includes two cutter heads 30, the side surface 13 is provided with two mounting grooves, and the two cutter heads 30 are arranged in one-to-one correspondence with the two mounting grooves. Specifically, the cutting head 30 is made of a diamond material, and the cutting head 30 is correspondingly embedded in the mounting groove so as to perform a machining process through the cutting head 30.

The side surface 13 includes a first folded surface 13a and a second folded surface 13b sequentially arranged along the thickness direction of the substrate 10, and an included angle is formed between the first folded surface 13a and the second folded surface 13 b. On the projection of the first end surface 11 towards the second end surface 12, the connection of the first fold surface 13a and the second fold surface 13b protrudes beyond the boundary of the first end surface 11, and the mounting groove is located at the connection, i.e. the tool bit 30 is mounted at the connection of the first fold surface 13a and the second fold surface 13 b.

Specifically, on the projection of the first end surface 11 toward the second end surface 12, the cutting head 30 protrudes from the first folding surface 13a, and a chip breaking structure is formed between the cutting head 30 and the first folding surface 13 a. Can cut off the processing bits to the work piece course of working through this chip breaking structure like this, avoid the processing bits to continue to link to each other with the work piece, conveniently continue processing.

The limiting groove 40 may be disposed parallel to a central line of the substrate 10 along the length direction, or may form an included angle with the horizontal line, and specifically, the included angle between the limiting groove 40 and the central line of the substrate 10 along the length direction may be set to be 0 ° to 30 °.

In the present embodiment, the pressing surface is a spherical surface having a diameter in the range of 5 to 20mm, and limiting the spherical diameter range to a range that can be fitted with the fitting member while being tight, and can secure the strength of the base body 10, it is preferable to set the spherical diameter to 12 mm.

As shown in fig. 1 and 7, the side surface 13 includes two first side surfaces and two second side surfaces, the two first side surfaces are correspondingly disposed, the two second side surfaces are correspondingly disposed, each tool bit 30 includes a first tool section and a second tool section which are connected with each other, the first tool section is located on the first side surface of the base body 10, the second tool section is located on the second side surface of the base body, and a positioning structure 13c is further provided on the second side surface, close to the second tool section, and the positioning structure 13c is used for being matched and positioned with a fastener. The stability of the milling insert during the fixing can be increased by providing the positioning structure 13 c.

As shown in fig. 5 and 6, the present invention provides a further embodiment in which only the pressing groove 20 and the spacing groove 40 are different from the above-described embodiment. Specifically, the pressing surfaces in the pressing groove 20 include a third pressing surface, a fourth pressing surface, a fifth pressing surface and a sixth pressing surface, the third pressing surface and the fourth pressing surface are located on one side of the limiting groove 40, and the fifth pressing surface and the sixth pressing surface are located on the other side of the limiting groove 40. The third pressing surface and the fourth pressing surface are in circular arc transition, the fifth pressing surface and the sixth pressing surface are in circular arc transition, the third pressing surface and the fourth pressing surface are matched with each other to press the mounting piece, and the fifth pressing surface and the sixth pressing surface are matched with each other to press the mounting piece. Through the structure, the pressing effect can be further improved, and the milling cutter blade is stable on the milling cutter disc. Wherein, the pressing surfaces are all spherical surfaces, and the diameters of the spherical surfaces are all between 5 and 20 mm.

In the present embodiment, the center line of the limiting groove 40 forms an angle with the center line of the base 10 in the longitudinal direction, i.e., the angle α is 20 ° as shown in fig. 5.

In accordance with yet another embodiment of the present invention, a milling cutter disc is provided that includes the milling insert provided in the above-described embodiments.

Specifically, the second end face 12 of the milling blade is a curved surface, the milling cutter disc is provided with an installation groove, the milling blade is arranged in the installation groove of the milling cutter disc, and the side wall of the installation groove corresponding to the second end face 12 is a curved surface, so that the side wall of the installation groove is attached to the second end face 12. Wherein, the second end face 12 is a concave face, and the side wall of the mounting groove is a convex face.

The milling cutter disc is provided with a plurality of installation positions and a plurality of milling cutter blades, and the plurality of milling cutter blades are arranged in one-to-one correspondence with the installation positions.

The milling cutter disc comprises a body, a plurality of installation positions are arranged on the body in an annular mode, the body comprises a plurality of fan-shaped blocks, the installation positions are arranged on the fan-shaped blocks, and the milling heights of at least two fan-shaped blocks in the plurality of fan-shaped blocks are different, so that the milling of workpiece surfaces of different types can be realized.

Through the structure that this embodiment provided, it is less than the volume that the base member 10 was taken up in the present installation through-hole to set up the groove 20 that compresses tightly, consequently can increase the intensity of base member 10 when satisfying fixed base member 10, makes base member 10 not fragile, fracture, has prolonged milling cutter piece's life.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. a milling insert, characterized in that the milling insert comprises:

A base body (10), the base body (10) has a first end surface (11), a second end surface (12) disposed oppositely, and a first end surface (11) and the second end surface (12) located between the On the side (13), a pressing groove (20) is provided on the first end face (11), and the pressing groove (20) is used for cooperating with a mounting piece to fix the base body (10);

A plurality of cutter heads (30) are provided on the side surface of the base body (10) symmetrically with respect to the center of the rotation axis of the base body (10).

2 . The milling insert according to claim 1 , wherein the first end face ( 11 ) is further provided with a limiting groove ( 40 ), and the limiting groove ( 40 ) is provided in the pressing groove ( 2 . 20), the limiting groove (40) divides the pressing groove (20) into a plurality of symmetrically arranged pressing surfaces.

3. The milling insert according to claim 2, wherein the pressing surface comprises a first pressing surface and a second pressing surface, the first pressing surface and the second pressing surface The limiting groove (40) is symmetrically arranged at the center, and the first pressing surface and the second pressing surface are both curved surfaces.

4. The milling insert according to claim 2, wherein the pressing surface comprises a third pressing surface, a fourth pressing surface, a fifth pressing surface and a sixth pressing surface, the first pressing surface The third pressing surface and the fourth pressing surface are located on one side of the limiting groove (40), and the fifth pressing surface and the sixth pressing surface are located on the other side of the limiting groove (40). side.

5 . The milling insert according to claim 1 , wherein the milling insert comprises two of the cutter heads ( 30 ), the side surface ( 13 ) is provided with two installation grooves, and the two said The cutter heads (30) are arranged in a one-to-one correspondence with the two mounting grooves.

6 . The milling insert according to claim 5 , wherein the side surface ( 13 ) comprises a first folded surface ( 13 a ) and a second folded surface ( 13b), there is an included angle between the first folding surface (13a) and the second folding surface (13b), and on the projection of the first end surface (11) toward the second end surface (12), The connection between the first folded surface (13a) and the second folded surface (13b) protrudes from the boundary of the first end surface (11), and the installation groove is located at the connection.

7. The milling insert according to claim 6, characterized in that, on the projection of the first end face (11) toward the second end face (12), the cutter head (30) protrudes above the The first folded surface (13a) is provided, and a chip breaking structure is formed between the cutter head (30) and the first folded surface (13a).

8 . The milling insert according to claim 2 , wherein the included angle between the center line of the limiting groove ( 40 ) and the center line of the base body ( 10 ) along the length direction is 0° to 30° 8 . between.

9 . The milling insert according to claim 2 , wherein the pressing surface is a spherical surface, and the diameter of the spherical surface ranges from 5 to 20 mm. 10 .

10. The milling insert according to claim 5, wherein the side surfaces (13) comprise two first side surfaces and two second side surfaces, the two first side surfaces are arranged correspondingly, and the two The second side surfaces are correspondingly arranged, each of the cutter heads (30) includes a first cutter segment and a second cutter segment connected to each other, the first cutter segment is located on the first side surface of the base body, and the second cutter segment On the second side surface of the base body, a positioning structure (13c) is further provided on the second side surface near the second blade segment, and the positioning structure (13c) is used for positioning with the fastener.

11. The milling insert according to claim 1, wherein the second end surface (12) is a curved surface.

12 . A milling cutter head, characterized in that, the milling cutter head comprises the milling insert according to any one of claims 1 to 11 .

13. The milling cutter disc according to claim 12, wherein the second end face (12) of the milling insert is a curved surface, the milling cutter disc has a mounting groove, and the milling insert is arranged on the In the installation groove, the side wall of the installation groove corresponding to the second end surface (12) is a curved surface, so that the side wall of the installation groove is in contact with the second end surface (12).

14. The milling cutter head according to claim 12, wherein the milling cutter head has a plurality of mounting positions and a plurality of the milling inserts, and a plurality of the milling inserts and the plurality of the mounting positions One-to-one corresponding settings.

15 . The milling cutter head according to claim 14 , wherein the milling cutter head comprises a body, a plurality of the mounting positions are annularly arranged on the body, and the body comprises a plurality of sector blocks, a plurality of 15 . At least two of the sector blocks have different milling heights.