CN201308944Y

CN201308944Y - Tube end sizing and flaring die

Info

Publication number: CN201308944Y
Application number: CNU2008201436056U
Authority: CN
Inventors: 孙占良; 杨宝银; 董军
Original assignee: Tianjin Seri Machinery Equipment Corp Ltd
Current assignee: Tianjin Seri Machinery Equipment Corp Ltd
Priority date: 2008-11-28
Filing date: 2008-11-28
Publication date: 2009-09-16
Anticipated expiration: 2018-11-28

Abstract

The utility model relates to a tube end sizing and flaring die, which is characterized by comprising a die body provided with axial through holes. The outer walls at two ends of the die body are respectively equipped with tapered openings, an outer wall at one end is provided with a big tapered opening, and an outer wall at the other end is provided with a small tapered opening. The tube end sizing and flaring die has the advantages that when threading process is required to be performed on the tube end outer diameter of a steel tube, a user firstly inserts the die inside the position needing threading process of the tube end of the steel tube, after being processed, the tube end outer diameter can be properly enlarged to form a taper opening similar to a bell mouth, thereby bringing convenience for threading process to tube end threads. Further, after filed use, the die can greatly improve tube end threading quality, and enables eligibility percent to be over 99%, thereby greatly reducing scrap quantity of work pieces, lowering production cost, and improving working efficiency.

Description

Pipe end sizing enlarging mould

Technical field

The utility model belongs to the pipe end processing unit (plant), particularly relates to a kind of pipe end sizing enlarging mould.

Background technology

Pipe end sizing mould is mainly used in the steel pipe car silk process under the prerequisite that does not influence its performance, and steel pipe tail end diameter is carried out suitable change, to improve the car yarn quality of steel pipe, reaches standard-required.Because in the steel pipe heat-treatment process, the diameter of steel pipe finished product requires to can be controlled in the certain limit, so be difficult to guarantee the quality of car silk.Though using U.S.'s import equipment at present aborning processes steel pipe, but invar pipe tube end diameter has small error, the qualification rate of on-the-spot car yarn quality can only reach about 95%, all caused many wastes on material and production cost, and operating efficiency is affected.Long receipt period owing to import equipment again, the cost height, specification is few, is difficult to satisfy the steel pipe processing of different size.

Summary of the invention

The utility model provides a kind of simple in structure, pipe end sizing enlarging mould of improving steel pipe car yarn quality and reducing production costs for solving the technical problem that exists in the known technology.

The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:

Pipe end sizing enlarging mould is characterized in that: comprise that one has the die ontology of axially extending bore on it, all be shaped on bell on the outer wall at die ontology two ends, wherein an end outer wall is shaped on big bell, and other end outer wall is shaped on the fine taper mouth.

The utility model can also adopt following technical scheme:

The tapering of the big bell of described die ontology one end outer wall is 1: 43-45, the tapering of other end outer wall fine taper mouth is 1: 38-40.

Described die ontology is a symmetrical structure.

Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme, when needs carry out Che Sijia man-hour to the pipe end external diameter, earlier this mould being inserted pipe end need carry out in the screw thread working position, after treatment, can make the suitable expansion of pipe end external diameter and form the awl mouth that is similar to bell mouth shape, help the processing of pipe thread like this.After use at the scene, can greatly improve pipe end car yarn quality, its qualification rate has been reached more than 99%, not only can significantly reduce the quantity scrapped of workpiece, reduce production costs, but also can increase work efficiency.In addition, the utility model also has advantage simple in structure, that be convenient to operate.

Description of drawings

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

Fig. 2 is the utility model user mode figure.

Among the figure: 1, die ontology; 2, axially extending bore; 3, big bell; 4, fine taper mouth; 5, steel pipe.

The specific embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

See also Fig. 1 and Fig. 2, pipe end sizing enlarging mould comprises a die ontology 1 that adopts the high 9CrS material of high strength after heat treatment to make, and die ontology is a symmetrical structure, and its case hardness reaches HRC50-60, and fineness is 1.6.Have an axially extending bore 2 on die ontology 1, all be shaped on bell on the outer wall at die ontology two ends, wherein an end outer wall is shaped on big bell 3, and other end outer wall is shaped on fine taper mouth 4.The tapering of described big conical orifice is 1: 43-45, the tapering in fine taper aperture are 1: 38-40, and in the present embodiment, the tapering of big conical orifice is preferably 1: 44, and the tapering in fine taper aperture is 1: 39.This mould can be divided into plurality of specifications according to the different-diameter of steel pipe 5, and diameter can be by ￠ 114-￠ 533mm.

Operation principle of the present utility model is:

When needs to pipe end external diameter Che Sijia man-hour, earlier this mould is inserted steel pipe 5 pipe ends and need carry out in the screw thread working position, after treatment, can make the suitable expansion of pipe end external diameter and form the awl mouth of approximate bell mouth shape, help the processing of screw thread like this.After use at the scene, can greatly improve pipe end car yarn quality, its qualification rate has been reached more than 99%, not only can significantly reduce the quantity scrapped of workpiece, reduce production cost, and improved operating efficiency.

Claims

1. pipe end sizing enlarging mould is characterized in that: comprise that one has the die ontology of axially extending bore on it, all be shaped on bell on the outer wall at die ontology two ends, wherein an end outer wall is shaped on big bell, and other end outer wall is shaped on the fine taper mouth.

2. pipe end sizing enlarging mould according to claim 1 is characterized in that: the tapering of the big bell of described die ontology one end outer wall is 1: 43-45, the tapering of other end outer wall fine taper mouth is 1: 38-40.

3. pipe end sizing enlarging mould according to claim 1, it is characterized in that: described die ontology is a symmetrical structure.