CN203711598U - Flaring tool - Google Patents

Abstract

The utility model discloses a flaring tool, comprising: a flaring cutter head (1), a knife handle (3), one end of the knife handle (3) is fixedly connected to the flaring cutter head (1), and the flaring cutter head (1 ) is cylindrical at the connecting handle (3), characterized in that: the shape of the tip of the flaring cutter head (1) is a hexagonal cone, and the hexagonal cone is provided with an arc surface (2). The utility model can effectively solve the problems of cracks and bulges when expanding the tapered hole, and has the advantages of simple structure, convenient use and strong practicability.

Description

Flaring tool

technical field

The utility model belongs to the technical field of tools, in particular to a small-diameter, thin-walled tapered hole flaring tool.

Background technique

Flaring tools are a very commonly used tool in production. Ordinary reaming tools have a round cross-section of the cutter head. When using this reaming tool to ream, cracks are likely to occur, and bulges are easily formed at the transition between the rod diameter and the tapered hole, which cannot meet the requirements of use. Earth-influenced production and processing.

Contents of the invention

The purpose of the utility model is to overcome the above problems and provide a flaring tool that solves the problems of cracks and bulges well, has a simple structure and is easy to use.

The purpose of this utility model and its main technical problems are solved by adopting the following technical solutions:

The flaring tool of the present utility model comprises: a flaring cutter head and a knife handle, one end of the handle is fixedly connected to the flaring cutter head, and the flaring cutter head is cylindrical at the connecting handle, and it is characterized in that: the flaring The shape of the tip of the cutter head is a six-sided cone, and the six-sided cone is provided with an arc surface.

The above-mentioned flaring tool, wherein: the taper of the tip of the flaring cutter head is 18°.

The above-mentioned flaring tool, wherein: on the same cross section of the tip of the flaring cutter head, the maximum radial dimension of the hexagon is smaller than the maximum distance between the two arc surfaces. the

The above-mentioned flaring tool, wherein: the two circular arc surfaces at the tip of the flaring cutter head are two, symmetrically distributed with respect to the central axis.

Compared with the prior art, the utility model has obvious advantages and beneficial effects. It can be seen from the above technical scheme that the shape of the tip of the flared cutter head is a hexagonal cone with a taper of 18°, and the six-sided cone has two conical surfaces. The maximum radial size of the shape is smaller than the radial size of the conical surface. During product processing, due to the short arc section, the forming speed slows down and the moment of inertia decreases, which fundamentally solves the cracks and problems caused by the use of conical cutter heads. Drum problem. In a word, the utility model has well solved the problems of cracks and bulges, and is a flaring tool with simple structure and convenient use.

Description of drawings

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

Fig. 2 is an enlarged schematic diagram of the section A-A.

Marked in the figure:

1. Flaring cutter head; 2. Arc surface; 3. Knife handle.

Detailed ways

Below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation, structure, features and effects of the flaring tool proposed according to the utility model will be described in detail as follows.

Referring to Fig. 1 and Fig. 2, a kind of flaring tool comprises: flaring cutter head 1, knife handle 3, one end of this knife handle 3 is fixedly connected with flaring cutter head 1, and flaring cutter head 1 is Cylindrical, wherein: the tip shape of the flaring cutter head 1 is a six-sided cone, and the six-sided cone is provided with an arc surface 2 . The taper of the tip of the flared cutter head 1 is 18°. On the same cross section at the tip of the flared cutter head 1 , the maximum radial dimension of the hexagon is smaller than the maximum distance between the two arc surfaces 2 . There are two circular arc surfaces 2 at the tip of the flaring cutter head 1, which are symmetrically distributed along the axis.

When in use, first blank the copper tube to be flared, remove the internal and external burrs of the holes at both ends, perform degreasing treatment to keep the parts clean, and then perform annealing treatment to eliminate residual stress. The flaring equipment adopts a hexagonal lathe. One end of the copper pipe to be flared is clamped on the lathe, and the flaring tool is installed on the rotary tool holder. Apply force, form slowly, and expand the tapered hole that meets the requirements.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. Any modifications made to the above embodiments according to the technical essence of the present utility model do not deviate from the content of the technical solution of the present utility model. Any simple modifications, equivalent changes and modifications still belong to the scope of the technical solution of the present utility model.

Claims (4)

1. a flaring tool, comprise: enlarging cutter head (1), handle of a knife (3), this handle of a knife (3) one end is fixedly connected with enlarging cutter head (1), enlarging cutter head (1) is located as cylindrical at connection handle of a knife (3), it is characterized in that: the pointed shape of described enlarging cutter head (1) is six face cone bodies, these six centrums are provided with arc surface (2).

2. flaring tool according to claim 1, is characterized in that: the most advanced and sophisticated tapering of described enlarging cutter head (1) is 18 °.

3. flaring tool according to claim 1 and 2, is characterized in that: on the same cross section at described enlarging cutter head (1) tip, hexagonal maximum radial dimension is less than the ultimate range between two arc surfaces (2).

4. according to the flaring tool described in claim 1 or 2, it is characterized in that: described most advanced and sophisticated two arc surfaces (2) of enlarging cutter head (1) are two, along axis, are symmetric.