Abstract:
The present invention relates to a method and apparatus for manufacturing a corrugated steel pipe, in which a spiral corrugation is formed on the body of the pipe, and the inner surface of the body of the pipe is smooth without any curvature to thereby improve the strength of the pipe and enable a fluid to stably flow during use. The method for manufacturing a corrugated pipe according to the present invention comprises the following steps: feeding a steel sheet into a first roll forming machine (100a); forming a first corrugated portion (A), including a recess formed integrally therein, on the surface of the steel sheet; forming a pair of tilted portions (136) outwardly from either side of the first corrugated portion (A); forming said pair of tilted portions (136) into a pair of second corrugated portions (B) having a recesses formed integrally therein, and which are corrugated in the direction opposite to the first corrugated portion; firstly pressing the top of the first corrugated portion (A) such that the second corrugated portions (B) are tightly disposed opposite one another; secondly pressing the top of the first corrugated portion (A) such that the top of the first corrugated portion (A) forms the same plane as the surface of the steel sheet and tightly contacts the recesses of the second corrugated portions (B); and passing the steel sheet through a second roll forming machine (100b) and winding the steel sheet into a cylindrical shape.
Abstract:
A pipe/fitting having an end having a modified crimp for securing both flexible ducts and pipes. Specifically, the pipe/fitting includes an end having a series of annularly disposed pipes. The modified crimp includes an outwardly facing channel in the base of the series of crimps configured to secure a flexible duct between the channel and a fastener received in the channel. The end also includes a pipe coupling system at the base of the series of crimps configured to couple a pipe to the conduit.
Abstract:
Die Erfindung betrifft einen elektromechanischen Bremskraftverstärker (10) mit einer Hohlspindel (16) und einer Hohlschraube (19). Die Erfindung schlägt vor, Gewindegänge (17, 21) durch Umformen aus Metall herzustellen und mit rohrförmigen Tragteilen (22, 23) aus Kunststoff zu umspritzen. Die Erfindung ermöglicht eine Herstellung der Hohlspindel (16) und der Hohlschraube (19) als Verbundteile.
Abstract:
Bei einer Vorrichtung zur spanlosen Bearbeitung langgestreckter Werkstücke zur Herstellung eines gewindeartigen Außenprofils mittels wenigstens einer jeweils um Achsen (12', 13', 14') drehbare Formwalzen (12, 13, 14) aufweisenden Formwalzenanordnung (9, 10, 11), wobei die Formwalzenanordnung (9, 10, 11) das zu bearbeitende Werkstück umgibt, wobei eine Zustellbewegung zwischen den Formwalzen (12, 13, 14) und dem Werkstück in dessen Umfangsrichtung sowie axial zu diesem eingerichtet ist, und wobei die Formwalzen (12, 13, 14) während eines vollständigen Umlaufs um das Werkstück nacheinander mit diesem in einen Umformeingriff gelangen, sind in Durchlauf richtung (8) des Werkstücks wenigstens zwei axial aufeinanderfolgende Formwalzenanordnungen (9, 10, 11) vorgesehen wobei wenigstens die Formwalzen (12, 13, 14) einer Formwalzenanordnung (9, 10, 11) untereinander gleich beschaffen sind und zur Darstellung von in Richtung des Umlaufs um das Werkstück aufeinanderfolgenden Umformeingriffen mit dem Werkstück ist die axiale Position einer jeden Formwalze (12, 13, 14) innerhalb eines axialen Einbaumaßes (28) unterschiedlich eingerichtet. Weiters ist ein Verfahren zur spanlosen Bearbeitung langgestreckter Werkstücke mit einer derartigen Vorrichtung beschrieben.
Abstract:
본 발명은 스테인리스 강판 등의 소재로 제작된 소재관을 복수개의 어퍼-다이 및 로우-다이를 사용하여 한번에 벨로우즈로 성형할 수 있도록 하여 작업의 신속성, 인력절감, 생산성 향상, 양질의 제품을 제조할 수 있도록 한 벨로우즈 성형장치 및 성형방법에 관한 것이다. 즉, 본 발명은 프레임 상부에 회전 가능하게 축설치되는 로테이팅-샤프트; 상기 로테이팅-샤프트에 소정 간격으로 수평 이동 가능하게 설치되는 복수개의 로우-다이; 상기 로테이팅-샤프트 상부에 승강수단에 자유회전 가능하게 축설치되는 아이들링-샤프트; 상기 아이들링-샤프트에 소정 간격으로 수평 이동 가능하게 설치되는 복수개의 어퍼-다이를 구비하여 로우-다이에 길이방향으로 수평 결합된 소재관이 어퍼-다이의 하강에 의해 좌우에서 중심방향으로 어퍼-다이 및 로우-다이의 수평이동과 함께 벨로우즈가 성형될 수 있도록 한 것을 특징으로 한다. 이와 같은 본 발명은 벨로우즈 제조에 따른 작업시간을 대폭 단축할 수 있어 생산성 향상 및 소재의 두께도 일정하게 유지할 수 있어 양질의 벨로우즈를 제조할 수 있는 효과가 있다.
Abstract:
The method comprises: a step, in which all the processing data are set; a step, in which the processing cycle is processed with one or more processing steps; a step, in which the processing cycle is controlled, which consists in controlling the rotation of a tube (2) around its longitudinal axis and the contact of the outer face of the tube (2) with at least one tool (18 and 31) along part or the entire longitudinal length of the tube (2), while performing a continuous or timed comparison of the result reached during the processing cycle; and a step in which the end of the processing cycle is signaled if the final configuration of the profiling (corrugation or deformation) of the tube 2 is detected.
Abstract:
Arrangements including pressing arrangements of dies are provided as well as processes for pressing a contour into tubular material. Handrails and docks having a handrail thereon are provided. Processes for disembarking/embarking between a floating vessel and a dock are provided.
Abstract:
The present invention provides an apparatus (100) for forming circumferential grooves (14) in the exterior surface of a linear member (10), such as a tube. The grooves are formed by rotating a cylindrical cutting element (120) around the tube such that cutting means in the cylindrical cutting element form the grooves. One rotation of the cylindrical cutting element causes multiple grooves to be formed in the surface of the tubes.
Abstract:
A cold rolling apparatus (10) includes a forming roll (18) which applies a forming load to a tube (14) when cold rolling the tube (14), and a hydraulic positioning assembly (30) including a positioning roller (60) disposable for initial contact with a tube (14) surface and arranged to apply a positioning load to a tube (14). A hydraulic circuit (103) is coupled to the forming roll (18) and to the hydraulic positioning assembly (30) such that the positioning load is related to the forming load. A face plate (64) mounted for movement with the forming roll (18), and the positioning roller (60) is mounted to the face plate (64). The face plate (64) is coupled to a piston (110) of the hydraulic positioning assembly (30) for movement with the piston (110) relative to the forming roll (18). The piston (110) is housed within a cylinder body (102) coupled to a guide block (72) which is coupled to the forming roll (18). The forming roll (18) is an outside roll, and the cold rolling apparatus (10) includes two positioning rollers (60, 62).
Abstract:
Dispositivo corrugador de tubos e processo para corrugar tubos empregando um dispositivo corrugador de tubos, o qual é utilizado para a produção de um tubo corrugado (T), sendo que o dispositivo corrugador (1) cabeçote rotativo (2), o qual apresenta um segmento tubular dentado (3), que é acionado por uma correia dentada (4); o cabeçote rotativo (2) incorpora uma base anelar (6) diretamente acoplada a um rolamento de esferas (7) que tem seu anel externo fixado a um flange (8) que é montado contra a parede (9) de uma câmara de moldagem (10). Dentro da câmara de moldagem (10) atua um elemento helicoidal de moldagem (15). O dispositivo aqui tratado permite a produção de tubos corrugados (T) de uma forma simples e com baixo custo.