Abstract:
A bending device is provided to supply the enough boosting force into the inside of a pipe in the pipe bending and to increase the bending angle of the pipe to minimize the deformation of the thickness. A bending device for the pipe bending comprises: a clamp fixing a pipe and bending an axis of rotation to the center; and a bending region supporting member inserted into a bending region(20a) bent by the clamp. The bending region supporting member is formed with coil type structure and has a bending region supporting part(110) having the elastic force.
Abstract:
A fabrication method of large scale 3 dimensional structure is provided to reduce unnecessary consumption of material and make light weight by sculpturing as much as constant thickness by evacuating inside of arbitrary three dimensional shape. A fabrication method of large scale 3 dimensional structure comprises a first step of acquiring 3 dimensional shape date relative to 3 dimensional sculpture(S110); a second step of converting a 3 dimensional shape data to the size required to the manufacturing finally(S120); a third step of converting the size-converted data into a shell data of hollow type(S130); a fourth step of dividing the shell data into size range of part data in which a rapid prototyping machine is able to manufacture(S140); a fourth step of manufacturing a sculpture part material by sculpturing each of part data with a rapid prototyping machine(S160); a sixth step of assembling sculpture part material and finishing it(S170).
Abstract:
A prototyping device for using a multiple array nozzle set, and a method thereof are provided to increase productivity and to prototype various desired shapes effectively, by improving speed for prototyping the nozzle set in an optional three-dimensional shape favorably. A prototyping device for using a multiple array nozzle set(200) comprises a nozzle set position control unit(240,250,260), a nozzle set posture control unit, a processing path data generating unit, and a system control unit. The multiple array nozzle set(210,220) injects a liquid-type prototyping material through plural nozzles. The nozzle set position control unit controls a position of x, y, and z-axis of the multiple array nozzle set simultaneously. The nozzle set posture control unit controls a posture of the plural nozzle sets separately. The processing path data generating unit generates processing path data of a prototyped material by processing three-dimensional CAD(Computer Aided Design) data. The system control unit controls the multiple array nozzle set, the nozzle set position control unit, and the nozzle set posture control unit according to the processing path of the prototyped material. The nozzle set posture control unit includes a rotation degree of freedom control unit(270). The rotation degree of freedom control unit is combined with a z-axis position control unit controlling a position of the z-axis for the multiple array nozzle set, rotatably to control a manufacturing path direction and an array direction angle of the multiple array nozzle set and to adjust a line gap between a fused material injected along the plurality nozzles separately.
Abstract:
본 발명은 나노산업, 전자 및 광통신, 광메모리 분야 등에서 필수적으로 요구되는 나노급 정밀도를 가지는 미세한 3차원 자유곡면 형상을 단층으로 형성하는 방법에 관한 것으로서, 본 발명의 미세한 3차원 자유곡면 형성방법은, 그림파일 정보를 기초로 광경화성 수지에 대한 가공크기를 달리하는 가공영역과 비 가공영역을 설정하는 단계, 설정된 가공영역과 비 가공영역을 아스키형태의 메트릭스로 변환하는 단계, 상기 메트릭스에 기초하여 가공영역에만 선택적으로 레이저를 조사하되 가공크기에 따라 레이저 조사시간을 달리하면서 조사하여 광경화성 수지를 단층으로 경화시키는 단계, 및 광경화성 수지에서 경화되지 않은 부분을 제거하여 그림파일과 동일한 3차원 자유곡면을 갖도록 완성하는 단계로 구성된다. 본 발명은 레이저를 이용하여 광경화성 수지를 직접적으로 경화시켜 나노급 정밀도를 가지는 미세한 3차원 자유곡면 형상을 단층으로 형성함으로써 공정시간을 단축하는 효과가 있다.
Abstract:
본 발명은 하나의 재료를 저장된 위치에서 절단 가공될 작업 위치로 공급하는 재료공급단계와, x축, y축, Θ x 축, Θ y 축의 4축 동시 제어 방식으로 구동하는 선형 열절단 시스템을 3차원 캐드 데이터에 따라 제어하여 재료의 일부분만을 가공하고, 상기 재료를 180°회전시킨 후에 상기 선형 열절단 시스템을 3차원 캐드 데이터에 따라 제어하여 상기 재료의 나머지 일부분을 가공함으로써 단위 형상층을 제작하며, 제작된 단위 형상층을 3차원 제작물의 각 위치에 위치하도록 이동 테이블에 적층한 후, 상기 이동 테이블에 적층된 재료의 상면을 접착 롤러를 이용하여 접착제를 도포하면서 하부의 재료와 밀착시켜 접착한다. 이러한 상기 과정은 최종 재료가 적층 및 접착되어 3차원 제작물이 완성될 때까지 반복 수행된다. 본 발명은 재료와 이송롤의 마찰 특성에 관계없이 원활한 재료 공급이 가능하고, 잔여 재료 제거 공정을 필요치 않게 하여 제작 시간을 단축시키며, 한 개의 적층 형상을 가지고 절단, 적층, 접착할 때에 발생되는 AUSL의 회전 및 비틀림 등의 형상 왜곡을 방지한다.
Abstract:
PURPOSE: A roll shaping device is provided to join stack panels by forming a linear combining portion and to expand the cross sectional size of a floor more than the cross sectional size of an inlet. CONSTITUTION: A roll shaping device(100) contains shaping rollers(110,120,130,140) to be arranged through the advancing direction of stack panels. The first roller(110) has a circular first convex portion having a first width and a first height. The second roller(120) has a circular first concave portion having a second width and a first depth. The third roller(130) has a circular second convex portion having a third width and a second height. The fourth roller(140) has a circular second concave portion having a fourth width and a second depth. The fourth roller contains a circular uplifted portion to be protruded from the floor of the second concave portion. The second height is lower than the first height. The fourth width is wider than the second width. Thereby, the combining force is strong by simply passing the stack panels between the rollers.
Abstract:
PURPOSE: A forming tool for forming a sheet metal with double curvature by continuously pressing the sheet metal using the bending deformation principle of the sheet metal, a forming apparatus equipped with the tool, and a method for forming the sheet metal using the forming apparatus equipped with the forming tool are provided. CONSTITUTION: In a forming tool(100) for forming a sheet metal with double curvature, the forming tool(100) comprises two pairs of supporting rolls(102) which are respectively fixed to a supporting stand(105) and horizontally support the sheet metal; and a central roll(103) which is installed at a rotationally fixed housing(106) and presses the sheet metal vertically so that the sheet metal is bending deformed, wherein the forming tool further comprises a motor(104) for providing the central roll with driving force, and a plurality of gears for transmitting the driving force of the motor to the central roll, wherein the two pairs of supporting rolls(102) are movably fixed to the supporting stand(105), and wherein the surface of the central roll(103) is spherical surface or toroidal surface. In a forming apparatus comprising a fixed frame; X axis, Y axis and Z axis tables which are movable in X axis, Y axis and Z axis directions of a space coordinate system for the fixed frame; and a controller for controlling movement of the tables respectively to form a sheet metal with double curvature, the forming apparatus is characterized in that two pairs of supporting rolls for horizontally supporting the sheet metal are fixed to the X axis table, and a central roll which is installed at a rotationally fixed housing and presses the sheet metal vertically so that the sheet metal is bending deformed, motor for providing the central roll with driving force, and a plurality of gears for transmitting the driving force of the motor to the central roll are installed at a housing rotationally fixed to the fixed frame.
Abstract:
PURPOSE: A plaster casting device using vibration and pressurization for producing a prototype of a die-casting process and a method thereof are provided, which can obtain uniform internal density and completely fill even thin walls by injecting molten metal into a plaster mold at low pressure and by directly applying vibration to the molten metal. CONSTITUTION: The method for producing the prototype of the die-casting process is characterized in that: a pressurizing device to directly pressurize molten metal in a plaster mold, which comprises a cylinder(11) injecting the molten metal into the plaster mold at low pressure, a speed controller(12) controlling the speed of the cylinder(11), and a plunger(14) directively pressurizing the molten metal; and a vibrating device to directly vibrate the molten metal, which comprises an excitation part(21) vertically exciting a vibration plate(24) and a vibration controller(23) controlling the amplitude and frequency of the excitation part(21).