CN202151739U

CN202151739U - Internal thread milling cutter

Info

Publication number: CN202151739U
Application number: CN2011202108101U
Authority: CN
Inventors: 朱胜雷
Original assignee: Wuxi Yutian Precision Tool Co Ltd
Current assignee: Wuxi Yutian Precision Tool Co Ltd
Priority date: 2011-06-21
Filing date: 2011-06-21
Publication date: 2012-02-29
Anticipated expiration: 2021-06-21

Abstract

The utility model discloses an internal thread milling cutter which comprises a cutter head, a cutter bar and a cutter handle, wherein both the cutter handle and the cutter bar adopts cylindrical structures; the diameter of the cutter bar is smaller than that of the cutter handle and the tangent circle is tangent to the tangent circle of the cutter handle; the cutter head is arranged at the front end of the cutter bar; the cutter head adopts a half-cylindrical structure and a blade part is arranged at the top of the cutter head; and the blade part comprises a front blade surface, a main rear surface, an auxiliary rear surface and a blade tip. Due to adoption of the internal thread milling cutter, the occupied machining space is small, the chip discharge is smooth, the thread pitch between teeth is not fixed, and internal threads with thread pitch of 0.2-10mm can be machined. The relief angle of the thread can be corrected according to the lead angle of the machined thread, and the cutting of the cutter is guaranteed to be smooth.

Description

A kind of internal thread milling cutter

Technical field

The utility model relates to a kind of milling cutter, particularly a kind of internal thread milling cutter.

Background technology

Common screw cutter is whole hard alloy screw cutter and frame blade type screw cutter, has 5-7 serrated knife point screw thread, can process at one time screw thread.The general work flow of eating screw cutter is more; Be covered with screw thread processing tooth on the cutting edge of screw cutter; Three-shaft linkage through Digit Control Machine Tool; Utilize formed threading tool to carry out the spiral interpolation and form screw thread, cutter is processed along helix can accomplish screw thread processing a week, also can rotate more and reach the screw thread requirement degree of depth several weeks.Its shortcoming is that it is many that multiple tooth screw cutter takies processing space, and chip removal has some setbacks, and causes the wearing and tearing of cutter easily, reduces the service life of cutter, has also reduced the efficient of cutter machining screw simultaneously.

The utility model content

The purpose of the utility model is, a kind of chip removal and high internal thread milling cutter of working (machining) efficiency of making things convenient for is provided.

The purpose of the utility model realizes through following technical scheme:

A kind of internal thread milling cutter is characterized in that, comprises cutter head, knife bar and handle of a knife, and said handle of a knife and knife bar are column structure, and the knife bar diameter is less than handle of a knife, and the two off-centre is provided with, and knife bar tangent plane circle is tangent with handle of a knife tangent plane circle, and cutter head is arranged at the knife bar front end; Said cutter head is 1/2 column structure, and its top is provided with a blade, and said blade comprises a lip surface, a major flank, a minor flank and a blade tip;

Be milled with a plane on the said handle of a knife.

The beneficial effect of the utility model is:

It is few that the monodentate screwer takies processing space, and chip removal is smooth and easy;

Monodentate screwer between cog pitch is fixing, can process from 0.2mm to 10mm more than the internal thread of various pitch, the relief angle according to the lead angle correction screw thread of machining screw guarantees that Tool in Cutting is smooth.

Description of drawings

Fig. 1 is the overall structure figure of the utility model.

Fig. 2 is the utility model blade partial view.

Fig. 3 is another blade partial view of the utility model.

The specific embodiment

By Fig. 1, Fig. 2, shown in Figure 3

The internal thread milling cutter of the utility model is made up of cutter head 1, knife bar 2, handle of a knife 3, and it is an integral structure, and handle of a knife and knife bar are column structure, and the knife bar section diameter is less than shank portion, and handle of a knife and knife bar are arranged off-centre, and two circle tangent planes are tangent;

Cutter head 1 is arranged at the front end of knife bar 2, is 1/2 column structure; The cutter head top is provided with the blade of this internal thread milling cutter, and this blade comprises a lip surface 4-1, a major flank 4-2, and a minor flank 4-3 and a blade tip 4-4, said major flank 4-2 is a cambered surface.

In another embodiment of the utility model, be milled with a plane 5 on the handle of a knife 3, to make things convenient for clamping.

Claims

1. an internal thread milling cutter is characterized in that, comprises cutter head (1), knife bar (2) and handle of a knife (3); Said handle of a knife and knife bar are column structure, and the knife bar diameter is less than handle of a knife, and the two off-centre is provided with; Knife bar tangent plane circle is tangent with handle of a knife tangent plane circle, and cutter head is arranged at the knife bar front end; Said cutter head is 1/2 column structure, and its top is provided with a blade (4), and said blade comprises a lip surface (4-1), a major flank (4-2), a minor flank (4-3) and a blade tip (4-4).

2. internal thread milling cutter according to claim 1 is characterized in that, is milled with a plane (5) on the said handle of a knife.