CN102837086A

CN102837086A - Internal thread milling cutter

Info

Publication number: CN102837086A
Application number: CN 201110167695
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: 2012-12-26

Abstract

The invention discloses an internal thread milling cutter. The internal thread milling cutter comprises a cutter hand, a cutter bar and a cutter handle, wherein the cutter handle and the cutter bar are of cylinder structures; the diameter of the cutter bar is smaller than that of the cutter handle; a tangent plane circle of the cutter bar is tangential to that of the cutter handle; a cutter head is arranged on the front end of the cutter bar; the cutter head is of a 1/2 cylindrical structure; a blade part is arranged on the top end of the cutter head; the blade part comprises a front blade surface, a primary rear surface, a secondary rear surface and a blade tip. The internal thread milling cutter occupies a little space and removes chips smoothly; thread pitches among teeth are fixed, so as to machine inner threads with thread pitches from 0.2 mm to 10 mm or more; a relief angle of the threads is modified according to a spiral lifting angle for machining the threads, so that the cutter is ensured to be cut smoothly.

Description

A kind of internal thread milling cutter

Technical field

The present invention 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.

Summary of the invention

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

The objective of the invention is to realize through following technical scheme:

A kind of internal thread milling cutter 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 its 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.

Beneficial effect of the present invention 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 overall structure figure of the present invention.

Fig. 2 is a blade partial view of the present invention.

Fig. 3 is another blade partial view of the present invention.

The specific embodiment

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

Internal thread milling cutter of the present invention 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 present invention, 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.