PIPE FITTING PROCESSING DEVICE, DRAWING UNIT, AND PIPE FITTING PROCESSING METHOD

• Main Author: SANO YOSHIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 20.05.2024
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

To provide a pipe fitting processing device which can mold to a standard inner diameter of a product specification by performing drawing-processing of a thick wall part of a reducer pipe fitting.SOLUTION: A pipe fitting processing device performs drawing-processing of an inner peripheral surface of a thick wall part of a reducer pipe fitting, and molds the other pipe end side of the reducer pipe fitting to an inner diameter of a product specification. The pipe fitting processing device comprises: a metal mold which holds the reducer pipe fitting; and a drawing unit which draws a thick wall part of the reducer pipe fitting held by the metal mold and molds the other pipe side including the other pipe end of the reducer pipe fitting to a standard inner diameter of the product specification. The drawing unit has N (an integer greater than or equal to 3) drawing parts and holding shafts, and each drawing tool γ is formed into a spherical trapezoid shape. N drawing tools are drawn in order from the first drawing tool while pressure-welding a spherical zone of the drawing tool to the inner peripheral surface of the thick wall part, and the other pipe end side including the other pipe end of the reducer pipe fitting is molded to the inner diameter of the product specification.SELECTED DRAWING: Figure 1 【課題】 レジューサ管継手の肉厚部分を扱き加工することで、製品規格の規格内径に成形できる管継手加工装置を提供する。【解決手段】 管継手加工装置は、レジューサ管継手の肉厚部分の内周面に扱き加工を施して、レジューサ管継手の他方の管端側を製品規格の内径に成形する。管継手加工装置は、レジューサ管継手を保持する金型と、金型に保持したレジューサ管継手の肉厚部分を扱いて、レジューサ管継手の他方の管端を含む他方の管側を製品規格の規格内径に成形する扱きユニットを備える。扱きユニットは、Ｎ（３以上の整数）個の扱き部、保持軸を有し、各扱き具γは、球台形状に形成される。Ｎ個の扱き具を、１番目の扱き具から順々に、扱き具の球帯を肉厚部分の内周面に圧接しつつ扱いて、レジューサ管継手の他方の管端を含む他方の管端側を製品規格の内径に成形する。【選択図】 図１