CN212384683U

CN212384683U - High-precision PCD corn milling cutter

Info

Publication number: CN212384683U
Application number: CN201922166860.3U
Authority: CN
Inventors: 朱均; 刘影; 朱敖平
Original assignee: Changzhou Yege Tools Co ltd
Current assignee: Changzhou Yege Tools Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2021-01-22
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses a high accuracy PCD maize milling cutter, including handle of a knife and cutter body, cutter body and handle of a knife fixed connection, the cutter body is kept away from the one end of handle of a knife to the cutter body middle part along the circumference distribute have more than two heliciform cutting group, each cutting group includes more than two blade holders, fixedly connected with a blade on each blade holder, a plurality of blades in each cutting group are certain helix angle along the axial and arrange in proper order; one blade arranged at the foremost end of each cutting group protrudes out of the front end surface of the cutter body, and the outer edge angle of a cutting edge of each cutting group is provided with a round chamfer; the cutting tracks between two adjacent blades in each cutting group have an overlapping part. The utility model discloses a PCD blade through reasonable blade range design, makes it have superior intensity, hardness and wear resistance, compares in alloy steel cutter, the utility model discloses maize milling cutter's life prolongs greatly.

Description

High-precision PCD corn milling cutter

Technical Field

The utility model relates to a machinery metalworking cutter field especially relates to high accuracy PCD maize milling cutter.

Background

The corn milling cutter is also called a corn cob milling cutter, and is shaped like a corn, and a plurality of blades are distributed on a cutter body. The corn milling cutter is mainly used for milling contours, is a common tool in rough milling, has the advantages of excellent cutting performance, high processing efficiency and the like, and is widely applied to rough processing or semi-finishing of mechanical parts, such as blades, dies, holes and grooves. When high-speed machining is carried out, the corn milling cutter in the prior art often generates the situation such as the blade sharp corner department collapses because the blade distributes unreasonablely, and cutter life is short, can not guarantee machining precision and machining efficiency.

SUMMERY OF THE UTILITY MODEL

To corn milling cutter blade among the prior art collapse easily, machining efficiency is low, shortcomings such as life weak point, the utility model provides a PCD corn milling cutter that long service life intensity is high. The specific scheme is as follows: the high-precision PCD corn milling cutter comprises a cutter handle and a cutter body, wherein the cutter body is fixedly connected with the cutter handle, more than two spiral cutting groups are circumferentially distributed from one end of the cutter body, which is far away from the cutter handle, to the middle part of the cutter body, each cutting group comprises more than two cutter seats, each cutter seat is fixedly connected with a blade, and a plurality of blades in each cutting group are sequentially arranged along the axial direction at a certain spiral angle; one blade arranged at the foremost end of each cutting group protrudes out of the front end surface of the cutter body, and the outer edge angle of a cutting edge of each cutting group is provided with a round chamfer; the cutting tracks between two adjacent blades in each cutting group have an overlapping part.

Furthermore, the shape of the first tool apron in each cutting group from the front end surface of the cutter body is an irregular sector formed by connecting two mutually perpendicular sides with different lengths in an arc; the cutter seats except the first cutter seat are identical in shape, the specific shape is a combination surface of a rectangle and a semicircle, one side of the rectangle parallel to the axial direction is provided with the blade, the other opposite side of the rectangle is the semicircle, and the diameter of the other side of the rectangle is equal to the side length provided with the blade.

Further, the helix angle is 30-60 °.

Further, the blade is a PCD blade, and the blade and the cutter body are connected in a welding mode.

Further, the cutting group has 4 groups, and each cutting group comprises 4 tool holders.

Furthermore, the knife handle is a high-speed conical knife handle, adopts a conical surface and end face double positioning mode, and has the specific model of HSK 63A.

The beneficial effects of the utility model reside in that: the outer edge angle of the first blade is provided with the round chamfer, so that the cutting edge is not sharp, and the cutting edge cannot break and break due to the sudden increase of stress when the first blade contacts the machined surface; the two adjacent blades in each cutting group are sequentially arranged at a certain deflection angle, the cutting tracks of the blades are overlapped, the blades arranged behind can have a buffering process along with the deep processing depth, and the cutting edges of the blades are not easy to damage; all blades adopt PCD blade (polycrystalline diamond blade), and it has superior intensity, hardness and wear resistance, compares in alloy steel cutter, the utility model discloses maize milling cutter's life prolongs greatly.

Drawings

Fig. 1 is a schematic structural diagram of the PCD corn milling cutter of the present invention;

labeled as: the cutter body 1, the cutter handle 2, the cutting group 11, the cutter holder 12, a first cutter holder 12-a and the blade 13.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

the high-precision PCD corn milling cutter comprises a cutter handle 2 and a cutter body 1, wherein the cutter body 1 is fixedly connected with the cutter handle 2, more than two spiral cutting groups 11 are circumferentially distributed from one end of the cutter body 1, which is far away from the cutter handle 2, to the middle part of the cutter body 1, each cutting group 11 comprises more than two cutter holders 12, each cutter holder 12 is fixedly connected with one blade 13, and the blades 13 in each cutting group 11 are sequentially arranged along the axial direction at a certain spiral angle; the angle of the helical angle is 30-60 degrees; a blade 13 arranged at the foremost end of each cutting group 11 protrudes out of the front end surface of the cutter body 1, and the outer edge angle of a cutting edge of the blade is provided with a round chamfer; the cutting tracks between two adjacent blades 13 in each cutting group 11 have an overlapping portion.

Furthermore, the shape of the first tool apron 12-a from the front end surface of the cutter body 1 in each cutting group 11 is an irregular sector formed by connecting two mutually perpendicular sides with different lengths in an arc; the other tool holders 12 except the first tool holder 12-a are identical in shape, and are specifically a rectangular and semicircular combined surface, wherein one side of the rectangle parallel to the axial direction is provided with a blade, the other opposite side of the rectangle is provided with the semicircular shape, and the diameter of the other side of the rectangle is equal to the side length provided with the blade 13.

The blade 13 is a PCD blade, and the connection mode of the blade 13 and the cutter body 1 is welding. The cutting groups 11 have 4 groups, and each cutting group 11 comprises 4 tool holders 12. The knife handle 2 is a high-speed conical knife handle, adopts a conical surface and end face dual positioning mode, and is of the specific type of HSK 63A.

When the automotive part is machined, the PCD corn milling cutter is mainly used for roughly milling the position of a hole groove in a part or performing surface treatment, when the hole groove is machined, the rotary corn milling cutter head faces the position to be machined to start milling, and blades 13 arranged behind are successively added into milling operation along with the deepening of machining, because the machining tracks of adjacent blades 13 have overlapping parts, a buffering process is provided before the rear blades 13 start milling, the PCD blades can be better protected, and the milling stability is improved. During milling, proper cutting fluid needs to be added to the cutter body for cooling so as to protect the PCD cutter blade from being damaged by overheating and burning.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The above description is only a preferred collective embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes and substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. High accuracy PCD maize milling cutter, including handle of a knife and cutter body, its characterized in that: the cutter body is fixedly connected with the cutter handle, more than two spiral cutting groups are distributed from one end of the cutter body, which is far away from the cutter handle, to the middle part of the cutter body along the circumferential direction, each cutting group comprises more than two cutter holders, each cutter holder is fixedly connected with a blade, and a plurality of blades in each cutting group are sequentially arranged along the axial direction at a certain spiral angle; one blade arranged at the foremost end of each cutting group protrudes out of the front end surface of the cutter body, and the outer edge angle of a cutting edge of each cutting group is provided with a round chamfer; the cutting tracks between two adjacent blades in each cutting group have an overlapping part.

2. The high precision PCD corn milling cutter as claimed in claim 1, wherein: the shape of a first tool apron in each cutting group from the front end surface of the cutter body is an irregular sector formed by connecting two mutually perpendicular sides with different lengths in an arc; the cutter seats except the first cutter seat are identical in shape, the specific shape is a combination surface of a rectangle and a semicircle, one side of the rectangle parallel to the axial direction is provided with the blade, the other opposite side of the rectangle is the semicircle, and the diameter of the other side of the rectangle is equal to the side length provided with the blade.

3. The high precision PCD corn milling cutter as claimed in claim 1, wherein: the angle of the spiral angle is 30-60 degrees.

4. The high precision PCD corn milling cutter as claimed in claim 1, wherein: the blade is a PCD blade, and the blade and the cutter body are connected in a welding mode.

5. The high precision PCD corn milling cutter as claimed in claim 1, wherein: the cutting group has 4 groups, and each cutting group comprises 4 tool holders.

6. The high precision PCD corn milling cutter as claimed in claim 1, wherein: the knife handle is a high-speed conical knife handle, adopts a conical surface and end face dual positioning mode, and has the specific model of HSK 63A.