Abstract:
A water jet turning mechanism (A) used in processing of materials that are hard to process (have a hard and brittle structure) and comprising a drive motor (30) and a fixing head (300) for fixing the workpiece, and it is characterized in that; it comprises: a water jet turning mechanism (A) ensuring occupational health and safety by operating under water (S) together with the workpiece and by operating below the noise level of 85 decibels, and a main body (10) with impermeability characteristic for ensuring the desired impermeability under water level (S).
Abstract:
열연강대(강판)의 표면에 형성된 스케일을 효과적으로 제거토록 제공된 스케일 제거장치가 제공된다. 상기 스케일 제거장치는 그 구성일예로서, 열연강대의 이송 경로 상에 배치되는 장치 하우징;과, 상기 장치 하우징의 내부에 고압유체를 분사하면서 공급토록 장치 하우징에 제공되는 고압유체 공급수단;과, 상기 장치 하우징에 연마재를 투입토록 장치 하우징에 제공되는 연마재 투입수단; 및, 상기 장치 하우징의 내부에서 혼합된 고압유체와 연마재의 연마슬러리를 강대에 분사토록 장치 하우징에 제공되는 연마슬러리 분사수단을 포함하여 구성될 수 있다. 이와 같은 본 발명에 의하면, 물리적(기계적) 방식의 스케일 제거를 구현하고 스케일 처리 공정의 간소화를 가능하게 하는 한편, 표면 조도의 적절한 유지를 가능하게 함으로써, 보다 환경 친화적이면서 고효율의 스케일 제거를 가능하게 하고, 특히 강대의 고속 진행에도 적용 가능한 개선된 효과를 얻을 수 있다.
Abstract:
A fluid (40) having magnetorheological (MR) properties and including a finely-divided abrasive material is directed through a non-ferromagnetic nozzle (30) disposed axially of the helical windings of an electric solenoid (28). A magnetic field created by the solenoid orients and aligns the magnetic moments of the particles to form fibrils thereby stiffening the flowing MR fluid (40) which, when ejected from the nozzle (30), defines a highly collimated jet. Collimation of the MR material persists for a significant time outside the magnetic field, permitting use of the abrasive jet to shape and/or polish the surface of a workpiece (12) at some distance from the nozzle (30). The jet (35) is directed into a shroud (20) against a workpiece (12) mounted for multiple-axis rotation and displacement to meet predetermined material removal needs for shaping.
Abstract:
The purpose of this invention is to reduce the changes in the conditions of the processing for projecting shots, and to downsize the air-type shot-treatment machine 10 and simplify its structure. An air-type shot-treatment machine 10 comprises a table 12 to hold an article to be processed, wherein the table 12 can rotate the article and lift and lower it, a nozzle 16 to project shots toward the article together with compressed air, wherein the nozzle 16 is fixed so that it is oriented toward the article, and is connected to a pressurized tank 46 by means of a connecting device 44 having a wear-resistant hose 40, an adjusting device 18 to adjust the quantity of shots projected from the nozzle 16, wherein the adjusting device 18 is disposed at the connecting device 44, a rotating device 20 to rotate the table 12, a moving device 22 to lift and lower the table 12, and a control device 24 to control the adjusting device 18 and the rotating device 20 so that while the table 12 is being rotated, the shots are binig projected toward the article to be processed, and, further, to control the moving device 22 so that the table 12 is lifted and lowered.
Abstract:
A process for imparting a glare resistant zone (56) to an intraocular implant (26) such as an intraocular lens using a highly regulated spray of an abrasive material. The spray is preferably of air and aluminum oxide, which may be washed from the intraocular implant during cleaning and polishing thereof. The process is suitable for any machinable intraocular lens material such as acrylates, methacrylates and hydrogels.
Abstract:
The invention concerns an apparatus for cleaning the edge of a wafer that may be relatively simply constructed with low cost, and prevent the wafer from being re-contaminated by the edge cleaning, thus resulting in increase of the yield rate of wafers. The apparatus includes a cleaning agent ejection nozzle body provided on a side part of a chuck for ejecting a particulate cleaning agent (CO2 particles) towards the side and the edge portions of the wafer held and rotated by the chuck, and a nozzle body carriage for moving the nozzle body between rest and cleaning positions.
Abstract:
A blast nozzle thrust reduction blasting system comprising: a source of blasting gas in a predetermined pressure range with abrasive particles entrained therein; a nozzle including a nozzle inlet for connection to the source of blasting gas, a nozzle outlet for emission of the blasting gas, a nozzle conduit from the nozzle inlet to the nozzle outlet including a throat therebetween with a ratio of area of the nozzle outlet to area of the throat selected to emit the blasting gas from the nozzle outlet to produce a supersonic jet; a thrust reducer connectable to the nozzle, to receive the supersonic jet exiting the nozzle, the thrust reducer comprising a body with a thrust reducer conduit therethrough, the body being of sufficient length and diameter to cause a flow condition of the jet received from the nozzle outlet to be modified such that a zone of sub-atmospheric pressure forms adjacent a face of the outlet of the nozzle whereby a pressure differential arises between the zone of sub-atmospheric pressure and surrounding atmosphere thereby creating an anti-thrust force in opposition to thrust of the nozzle.
Abstract:
The present invention aims to provide a shot-treatment apparatus which allows a high throughput of workpieces with the least possible idle time while achieving a uniform shot-treatment effect on workpieces. The shot-treatment apparatus of the present invention has a rotatable main table 30 located in the place where both a projection area to be projected upon by the shot from a projecting device and a non-projection area are included. A plurality of satellite tables 32 for placing workpieces 12 are rotatably mounted on the main table 30. Each satellite table 32 has a driven shaft 33 which is in parallel with a main shaft 31 of the main table 30. The shot is projected from the projecting device against the workpiece 12 that is placed on the satellite table 32. The workpiece 12 that is placed on the satellite table 32 is held down by a holding member 48 of a holding assembly 46. The holding member 48 rotates along with the workpiece 12.
Abstract:
A process for imparting a glare resistant zone (56) to an intraocular implant (26) such as an intraocular lens using a highly regulated spray of an abrasive material. The spray is preferably of air and aluminum oxide, which may be washed from the intraocular implant during cleaning and polishing thereof. The process is suitable for any machinable intraocular lens material such as acrylates, methacrylates and hydrogels.