CN202845897U

CN202845897U - Hard alloy welded spiral end mill

Info

Publication number: CN202845897U
Application number: CN 201220509371
Authority: CN
Inventors: 李志芬
Original assignee: CHANGZHOU NAIZHILI TOOLMAKING Co Ltd
Current assignee: CHANGZHOU NAIZHILI TOOLMAKING Co Ltd
Priority date: 2012-09-27
Filing date: 2012-09-27
Publication date: 2013-04-03
Anticipated expiration: 2022-09-27

Abstract

The utility model relates to a cutting tool used in machining and particularly relates to a hard alloy welded spiral end mill. The spiral end mill comprises a hilt and a cutting part positioned at the front end of the hilt. The cutting part comprises a plurality of end surface milling edges which are arranged on the end surface of the hilt uniformly, as well as a plurality of spiral edges which extend spirally in the axial direction on the peripheral surface of the hilt, wherein each end surface milling edge is correspondingly connected with one spiral edge; a spiral chip discharge groove is formed between every two spiral edges; the outer wall of the hilt is provided with a cooling groove in the axial direction; and one end of the cooling groove is communicated with the chip discharge groove. In a milling process, the cutting tool and a workpiece to be machined can be cooled by use of the spiral end mill, so that the influences on the workpiece and the cutting tool resulting from heat generated by the friction of the cutting tool and the workpiece are avoided, the service life of the cutting tool is prolonged and the machining quality of the workpiece is ensured.

Description

Carbide alloy welding helical end mills

Technical field

The utility model relates to the cutter that uses in the machining, is specifically related to a kind of carbide alloy welding helical end mills.

Background technology

In the machining, using helical end mills that workpiece is added man-hour, can friction produce higher temperature between cutter and the workpiece, and under long high temperature during milling, can produce certain impact to cutter and workpiece, be that cutter damages easily, the problem that machining accuracy reduces appears in processing place of workpiece, even causes the product rejection that processes.

Summary of the invention

For above-mentioned technical problem, the utility model provides a kind of carbide alloy welding helical end mills, in milling process, it can cool off cutter and workpiece to be machined, avoid the heat of cutter and friction of workpiece generation on the impact of workpiece and cutter, prolong cutting-tool's used life, guaranteed the crudy of workpiece.

The realization the technical solution of the utility model is as follows:

Carbide alloy welding helical end mills, comprise handle of a knife, and be positioned at the cutting portion of handle of a knife front end, cutting portion comprises a plurality of face milling swords that are arranged on the handle of a knife end face, and a plurality of face milling swords are arranged on the handle of a knife end face uniformly, and makes a plurality of helical edges that axial screw is extended at the handle of a knife outer peripheral face, the corresponding helical edges that connects of each face milling sword, form the chip area of spiral between helical edges, described handle of a knife outer wall axially offers cooling bath, and an end of described cooling bath is communicated with chip area.

The spiral angle of described helical edges is at 23 °-40 °.

The spiral angle of described helical edges is 30 °.

Described handle of a knife is the Morse's cone handle of a knife.

Adopted such scheme, in milling process, cooling medium enters cooling bath and enters in the chip area between the helical edges again, owing to add man-hour, cutter is rotating, thereby the cooling fluid part in the chip area is centrifuged between the machined surface of helical edges and workpiece, another part flows to face milling sword place, thereby the machined surface to cutter helical edges, face milling sword and workpiece cools off, avoided the heat of cutter and friction of workpiece generation on the impact of workpiece and cutter, prolong cutting-tool's used life, guaranteed the crudy of workpiece to be machined.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Among the figure, 1 is handle of a knife, and 2 is the face milling sword, and 3 is helical edges, and 4 is chip area, and 5 is cooling bath.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is further specified.

Referring to Fig. 1, carbide alloy welding helical end mills, be included as Morse's cone handle of a knife 1, and be positioned at the cutting portion of handle of a knife front end, cutting portion comprises a plurality of face milling swords 2 that are arranged on the handle of a knife end face, a plurality of face milling swords are arranged on the handle of a knife end face uniformly, and a plurality of helical edges 3 of doing the axial screw extension at the handle of a knife outer peripheral face, the corresponding helical edges that connects of each face milling sword, between helical edges, form the chip area 4 of spiral, the handle of a knife outer wall axially offers cooling bath 5, and an end of cooling bath 5 is communicated with chip area 4.In the implementation, the quantity of face milling sword and helical edges can be 3,4,6; And the quantity of cooling bath is identical with the quantity of chip area, i.e. the corresponding chip area of each cooling bath.Can cool off cutter and workpiece entering the cooling bath medium, also can play lubrication.

Wherein, the spiral angle of helical edges is at 23 °-40 °.In the implementation, the spiral angle of helical edges is 23 °, 25 °, 27 °, 29 °, 31 °, 33 °, 35 ° 37 °, 40 °.

Claims

1. carbide alloy welds helical end mills, comprise handle of a knife, and be positioned at the cutting portion of handle of a knife front end, it is characterized in that: cutting portion comprises a plurality of face milling swords that are arranged on the handle of a knife end face, a plurality of face milling swords are arranged on the handle of a knife end face uniformly, and a plurality of helical edges of doing the axial screw extension at the handle of a knife outer peripheral face, the corresponding helical edges that connects of each face milling sword, between helical edges, form the chip area of spiral, described handle of a knife outer wall axially offers cooling bath, and an end of described cooling bath is communicated with chip area.

2. carbide alloy according to claim 1 welds helical end mills, and it is characterized in that: the spiral angle of described helical edges is at 23 °-40 °.

3. carbide alloy according to claim 1 and 2 welds helical end mills, and it is characterized in that: the spiral angle of described helical edges is 30 °.

4. carbide alloy according to claim 1 and 2 welds helical end mills, and it is characterized in that: described handle of a knife is the Morse's cone handle of a knife.