CN217964953U

CN217964953U - Corn milling cutter

Info

Publication number: CN217964953U
Application number: CN202222042066.XU
Authority: CN
Inventors: 王恩友; 郑晓依
Original assignee: Haiyu Technology Taizhou Co ltd
Current assignee: Haiyu Technology Taizhou Co ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-12-06
Anticipated expiration: 2032-08-04

Abstract

The utility model discloses a corn milling cutter, including cutter body and blade, its characterized in that: the cutter body is divided into a cutter handle connected with the main shaft, a mounting part for mounting the blade and a connecting part for connecting the cutter handle and the mounting part; the knife handle is a BT 30-specification knife handle, the middle of the knife body is hollow and serves as a cooling water channel, a blade groove is formed in the mounting part of the knife body, and a blade is mounted on the blade groove; the blade grooves are arranged into three groups of first rows of blade grooves and second rows of blade grooves, and the first rows of blade grooves and the second rows of blade grooves are distributed in a staggered mode in the axial direction; the axial interval between adjacent blade grooves in each row is less than half of the length of the blades, and an included angle is formed between every two adjacent blades. The utility model discloses a maize milling cutter structure is succinct, adopts the blade groove and has the interval to guarantee that the cutter has higher intensity and rigidity, and cutter body cavity alleviates cutter weight, and the mode of wrong tooth is adopted in the range of blade, avoids shaking the sword, is fit for boring the characteristics of the high rotational speed of BT30 main shaft, light load on attacking the center.

Description

Corn milling cutter

Technical Field

The invention relates to a machining cutter, in particular to a corn milling cutter.

Background

On a new energy vehicle, an aluminum alloy long beam piece is used as a structural part, two side end faces need to be machined on the long beam piece, the side end faces are small in thickness and large in height, the long beam piece is horizontally placed on the upper side of another machine tool after top face milling, drilling and tapping are finished in a numerical control drilling and milling center under a traditional machining method, and side milling is carried out by an end mill to finish machining of the side end faces. The cutting mode is changed, one procedure can be reduced by using a corn milling cutter to carry out vertical processing on the side end surface, and the processing efficiency can be greatly improved.

A plurality of blades of the corn milling cutter are distributed on the cutter body and are similar to corn shapes, and the corn milling cutter is mainly used for milling contours and has the advantages of excellent cutting performance, high machining efficiency and the like. However, the currently used corn milling cutter blade is installed in a spiral groove, so that the diameter of the cutter is large, the weight is heavy, the required torque is also large during processing, and the cutter blade cannot be used on the BT30 main shaft of a numerical control drilling and milling center.

Disclosure of Invention

The utility model aims at providing a maize milling cutter can cooperate in BT30 main shaft, is applicable to the less and highly great side end face milling process of width.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a corn milling cutter comprises a cutter body and a blade, wherein the cutter body is divided into a cutter handle connected with a main shaft, an installation part for installing the blade and a connection part for connecting the cutter handle and the installation part; the tool holder is a tool holder with BT30 specification, is matched with a BT30 main shaft, and is hollow in the middle and used as a cooling water channel; the mounting part of the cutter body is provided with a blade groove, a blade is mounted on the blade groove, and the cutting surface of the blade passes through the central axis of the cutter body; the blade grooves are arranged into three groups of first row blade grooves and second row blade grooves, the blade grooves are uniformly distributed on the cutter body around the central shaft of the cutter body, and the first row blade grooves and the second row blade grooves are staggered in the axial direction; the adjacent blade grooves in each row are spaced, the axial spacing is less than half of the length of the blades, and an included angle is formed between every two adjacent blades.

Preferably, the blade groove is provided with a water spray hole, and the water spray hole is connected with the cooling water channel of the cutter body.

Preferably, the cutting edge part of the blade is enclosed to form an inverted conical surface, and the angle of the inverted conical surface ranges from 0.02 degrees to 0.1 degrees.

Preferably, the diameter of the cutter body is different from that of the connecting part between the mounting part and the connecting part, the mounting part is connected with the connecting part at a chamfer angle, the blade of the second row of cutters closest to the connecting part is an upper chamfer blade, and the top end of the upper chamfer blade is obliquely protruded outwards; the blade at the foremost end of the first row of cutters is a lower chamfering blade, and the tail end of the lower chamfering blade is outwards inclined and protruded; the cutter body is provided with a triangular protrusion supporting the lower chamfering blade at the foremost end.

The utility model discloses a maize milling cutter structure is succinct, adopts sword groove mode to guarantee that the cutter has higher intensity and rigidity, and cutter body cavity alleviates cutter weight, and the mode of wrong tooth is adopted in the range of blade, reduces cutter and work piece area of contact at same moment, avoids shaking the sword, is fit for boring the characteristics of attacking BT30 main shaft high rotational speed, light load in the center.

Drawings

Fig. 1 is a front view structural diagram of the present invention.

Fig. 2 is a sectional view B-B of fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1-2, the utility model provides a corn milling cutter, which comprises a cutter body and a blade, wherein the cutter body is made of 20CrMnTi material and is formed by finish machining after heat treatment; the blade is embedded on the cutter body by using a PCD material; the cutter body is divided into a cutter handle 1 connected with the main shaft, a mounting part 2 for mounting the blade and a connecting part 3 for connecting the cutter handle 1 and the mounting part 2; the tool holder 1 is a tool holder with BT30 specification and can be matched with a BT30 main shaft, and the middle of the tool body is hollow and is used as a cooling water channel 4 which can be communicated with a middle water outlet hole of a machine tool main shaft; an insert groove 5 is arranged on the mounting part 2 of the cutter body, and an insert 6 is mounted on the insert groove 5; the blade grooves 5 are arranged into three groups of first row blade grooves and second row blade grooves, the blade bodies are uniformly distributed on the cutter body around the central shaft of the cutter body, the cutting surfaces of the blades 6 pass through the central shaft line of the cutter body, the axial interval between the adjacent blade grooves 5 in each row is less than half of the length of the blades, and an included angle is formed between the two adjacent blades 6; the first row of blade grooves and the second row of blade grooves are distributed in an staggered mode in the axial direction; in this embodiment, 6 blades are mounted in each row, and the included angle between two adjacent blades is 10 °. The cutting edge of the blade is enclosed to form an inverted conical surface, the angle range of the inverted conical surface is 0.02-0.1 degrees, and the problem that the product is large at the top and small at the bottom due to cutter back-off in the machining process can be reduced. The blade groove 5 is provided with a water spraying hole 7, the water spraying hole 7 is connected with the hollow cooling water channel 4 of the cutter body, and the water spraying hole 7 is opposite to the blade 6, so that the cooling effect in the machining process can be effectively improved, and the service life of the cutter can be prolonged.

The cutter body has a diameter difference between the mounting part 2 and the connecting part 3, the mounting part 2 is connected with the connecting part 3 in a chamfering way, the blade of the second row of cutters closest to the connecting part 3 is an upper chamfering blade 61, and the top end of the upper chamfering blade 61 is obliquely and convexly outwards; the blade at the most front end of the first row of cutters is a lower chamfering blade 62, and the tail end of the lower chamfering blade 62 is outwards inclined and protruded; the cutter body is provided with a triangular protrusion supporting the lower chamfering blade 62 at the foremost end; the upper end and the lower end of the cutter are provided with chamfering blades, so that the deburring effect can be improved.

The design scheme has a simple structure, the body of the cutter is made into an integrated cutter bar by special steel, and the rigidity is enhanced by heat treatment; the service life of the blade is prolonged by adopting the PCD material; compared with the traditional corn milling cutter, the corn milling cutter of the utility model has simple structure, adopts blade grooves without spiral grooves and has intervals to ensure that the cutter has higher strength and rigidity; the cutter body is hollow, the weight of the cutter is reduced, the arrangement of the blades adopts a staggered tooth mode, the contact area of the cutter and a workpiece at the same time is reduced, cutter vibration is avoided, and the cutter is suitable for the characteristics of high rotating speed and light load of a BT30 main shaft on a drilling and tapping center. The utility model discloses be applied to the side end face processing of long beam spare, only need one side lower tool of work piece, the thickness of recutting the part can, feed distance is short, for traditional manufacturing method, machining efficiency promotes by a wide margin.

Claims

1. The utility model provides a maize milling cutter, includes cutter body and blade, its characterized in that: the cutter body is divided into a cutter handle (1) connected with the main shaft, an installation part (2) for installing the blade and a connecting part (3) for connecting the cutter handle (1) and the installation part (2); the cutter handle (1) is a BT 30-standard cutter handle and can be matched with a BT30 main shaft, the middle of the cutter body is hollow and serves as a cooling water channel (4), an installation part (2) of the cutter body is provided with a blade groove (5), a blade (6) is installed on the blade groove (5), and the cutting surface of the blade (6) passes through the central axis of the cutter body; the blade grooves (5) are arranged into three groups of first row blade grooves and second row blade grooves, the blade grooves are uniformly distributed on the cutter body around the central shaft of the cutter body, and the first row blade grooves and the second row blade grooves are distributed in a staggered mode in the axial direction; the axial interval between adjacent blade grooves (5) in each row is less than half of the length of the blades, and an included angle is formed between two adjacent blades (6).

2. The corn milling cutter as set forth in claim 1, wherein: the blade groove (5) is provided with a water spraying hole (7), and the water spraying hole (7) is connected with the cooling water channel (4) of the cutter body.

3. The corn milling cutter as set forth in claim 2, wherein: the cutting edge part of the blade (6) is enclosed to form an inverted conical surface, and the angle range of the inverted conical surface is 0.02-0.1 degrees.

4. A corn milling cutter as claimed in claim 2 or 3, wherein: the cutter body has a diameter difference between the mounting part (2) and the connecting part (3), the mounting part (2) is connected with the connecting part (3) in a chamfering way, the blade of the second row of cutters closest to the connecting part (3) is an upper chamfering blade (61), and the top end of the upper chamfering blade (61) is outwards protruded in an inclined way; the blade at the foremost end of the first row of cutters is a lower chamfering blade (62), and the tail end of the lower chamfering blade (62) is outwards inclined and protruded; the blade body has a triangular protrusion at the foremost end for supporting the lower chamfering blade (62).