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1. 发明专利

JP2001041004A MANUFACTURE OF TURBINE NOZZLE 失效
公开(公告)号：JP2001041004A
公开(公告)日：2001-02-13
申请号：JP20981299
申请日：1999-07-23
申请人： TOSHIBA CORP
发明人： MAKINO YOSHINOBU , YAMADA KIYOSHI , MINAMI KATSUNORI , YAMADA MASAHIRO , HAMADA KAZUNORI
IPC分类号： B23P15/00 , F01D9/04
摘要： PROBLEM TO BE SOLVED: To shorten time for assembling and adjusting, and to easily attach a nozzle blade body of three dimensional blade shape to each of a nozzle inner- and outer-ring side wear plates and to each of diaphragm inner- and outer-rings. SOLUTION: The manufacture method of a turbine nozzle comprises steps of: blanking a nozzle inner side wear plate 13 and a nozzle outer side wear plate 14 from a flat plate by laser beam cutting; applying bending to the nozzle inner side wear plate 13 and the nozzle outer side wear plate 14 to form them into ring pieces; punching the nozzle inner side wear plate 13 and the nozzle outer side wear plate 14 formed into ring pieces such that the punched part has a shape of three dimensional blade; inserting both ends of a nozzle blade body 15 into the nozzle inner side wear plate 13 and the nozzle outer side wear plate 14 and welding them by a laser beam; and connecting the nozzle inner side wear plate 13 and connecting the nozzle outer side wear plate 14 with a diaphragm inner ring 16 and a diaphragm outer ring 17, respectively, by electron beam welding or the like.

2. 发明专利

JPH1190662A DRILLING METHOD, PROTECTIVE MATERIAL FOR DRILLING AND HEAT-RESISTANT PARTS TO BE WORKED 失效
公开(公告)号：JPH1190662A
公开(公告)日：1999-04-06
申请号：JP25988997
申请日：1997-09-25
申请人： TOSHIBA CORP
发明人： MAKINO YOSHINOBU , YAMADA KIYOSHI , CHIYAMOTO YUUICHI
IPC分类号： F01D5/18 , B23K26/18 , B23K26/382 , B23K26/00
摘要： PROBLEM TO BE SOLVED: To prevent an un-drilled part from being damaged with a laser beam emitted from a worked hole to be drilled at the time of drilling it using the laser beam. SOLUTION: In a drilling method, a work protective material 3 which is constituted by laminating >=2 of a polymer compound to scatter the laser beam and a metal to reflect the laser beam or attenuate the output of the laser beam, is set on a laser beam emitting outlet side of a drilled hole 2 of a worked part 1 to be drilled with the laser beam 6 and an un-drilled part of the worked part 1 is protected from the laser beam 6 emitted from the drilled hole 2.

3. 发明专利

JPH1133761A LASER WELDING DEVICE FOR POLYGONAL COLUMN 失效
公开(公告)号：JPH1133761A
公开(公告)日：1999-02-09
申请号：JP20839497
申请日：1997-07-18
申请人： TOSHIBA CORP
发明人： YAMADA KIYOSHI , KIMURA SEIICHIRO , TONMIYA YUICHI
IPC分类号： B23K37/02 , B23K26/00 , B23K26/064 , B23K26/082 , B23K26/14 , B23K26/21 , B23K26/06 , B23K26/08
摘要： PROBLEM TO BE SOLVED: To provide the laser welding device for the polygonal column, strength of which is high and excellent, preventing an occurrence of a welding defect at the welding portion on the straight part and corner part of the polygonal column 1. SOLUTION: The polygonal column 1 is fixed on a fixing bench with which an end part of the column is touched. A driving motor 5 arranged at a sleeve 2 transmits a rotation to an internal gear 8 by a spur gear 6, a bracket 9 directly connects with the internal gear 8 and, the bracket 9 is coupled up with a supporting arm 10. A slideway 11 is formed in a similar figure to a peripheral wall of the polygonal column 1, and a position of a condensing optical system 4 is controlled to make its top tip always vertical to the peripheral wall face of the polygonal column 1. The condensing optical system 4 is rotary controlled by a driving control method 26 and set its speed at relatively the same as that of the welding part of a workpiece.

4. 发明专利

JPH0595478A PICTURE PROCESSOR 失效
公开(公告)号：JPH0595478A
公开(公告)日：1993-04-16
申请号：JP35427391
申请日：1991-12-20
申请人： TOSHIBA CORP
发明人： SEKIZAWA HIDEKAZU , HOSAKA YASUO , YAMADA KIYOSHI , MIURA SHUZO
IPC分类号： H04N1/409 , G06F17/10 , G06T5/00 , H04N1/40
摘要： PURPOSE:To express even a halftone of a picture with high resolution by reducing the effect of the dispersion in the element characteristic of a line sensor. CONSTITUTION:The processor unit is provided with an output means 22 applying A/D conversion to an output of a linear line sensor 4, obtaining the local fluctuation rate of a picture signal, applying prescribed signal processing to an input picture signal corresponding to the local fluctuation rate and selecting and outputting the signal depending on the local fluctuation rate. A means obtaining the local fluctuation rate is a high frequency emphasis processing section 10 comprising a product sum arithmetic operation section 12 applying addition processing to the product between unit data of a picture signal stored in a two-dimension picture signal storage section 11 able to store picture signals by plural lines from the line sensor and a coefficient corresponding to the unit data. The fluctuation of coefficients of a coefficient string corresponding to a unit data string arranged in an orthogonal direction is set larger than that of a coefficient string corresponding to the unit data string of picture signals by one line stored in the picture signal storage section 11.

5. 发明专利

JPH0583542A IMAGE PROCESSOR 失效
公开(公告)号：JPH0583542A
公开(公告)日：1993-04-02
申请号：JP35428091
申请日：1991-12-20
申请人： TOSHIBA CORP
发明人： SEKIZAWA HIDEKAZU , HOSAKA YASUO , YAMADA KIYOSHI , MIURA SHUZO
IPC分类号： H04N1/60 , G06T1/00 , G06T5/00 , H04N1/40 , H04N1/46
摘要： PURPOSE:To reproduce color images with high resolution and fidelity of black color by outputting black signals to an output device when it is judged by the combination of chrominance signals after conversion that the image signals are black. CONSTITUTION:Concerning respective output signals M, Y and C from a color conversion table, a simple binarizing circuit 114 executes a binarizing processing and a dither processing is executed while successively comparing those signals with dither patterns from a reference memory 116 for dither pattern by a comparator 115. Further, the respective signals are inputted to a multiplexer 117 for simple binarizing/dithering and switched by the output signal of a switching code conversion ROM 13. When all the outputs of the respective color multiplexers 117 are '0' or '1', the result of synthesizing the chrominance signals is turned to white or black and therefore, it is detected by a circuit 118. At such a time, a gate circuit 119 for black-and-white signals is opened to output signals to a printer (a), gate circuits 120-122 for respective color signals are closed at the same time, and the outputs of chrominance signals are stopped.

6. 发明专利

JPH04182322A METHOD AND DEVICE FOR WELDING QUARTZ MEMBER 失效
公开(公告)号：JPH04182322A
公开(公告)日：1992-06-29
申请号：JP30626090
申请日：1990-11-14
申请人： TOSHIBA CERAMICS CO , TOSHIBA CORP
发明人： YANO MAKOTO , SATO YUZURU , YAMADA KIYOSHI
IPC分类号： B23K26/32 , C03B20/00 , C03B23/20 , C03B23/203
摘要： PURPOSE:To prevent thermal cracking and the redeposition of the sublimed vapor and to obtain a high-quality product in the laser welding by forming a gap between the end faces of the plural quartz members to be welded. CONSTITUTION:A laser beam 1b is dispersed beyond a focus 1c and defocused to irradiate a filler rod 4 arranged between quartz members 2 and 3 and the end faces 2a and 3a of the members 2 and 3, and the rod 4 is melted to make a padding 4a. The tip 7a of a gas spray nozzle 7 is always positioned close to the molten region of the rod 4, a working gas is supplied in the welding direction from the side to prevent the deposition of the sublimate generated by welding, and the entire welding zone including the padding 4a is made transparent. A gap 8 is set between the members 2 and 3, and a groove 13 is provided on the end faces 2a and 3a. Consequently, the area is increased, the penetration reaches to the rear, and the members are stably, uniformly and smoothly welded since the filler is fixed.

7. 发明专利

JPH02247097A LASER BEAM CUTTING METHOD AND DEVICE FOR STAINLESS STEEL PLATE 失效
公开(公告)号：JPH02247097A
公开(公告)日：1990-10-02
申请号：JP6633589
申请日：1989-03-20
申请人： TOSHIBA CORP
发明人： TAKAISHI KAZUTOSHI , YAMADA KIYOSHI
IPC分类号： B23K26/142 , B23Q11/00
摘要： PURPOSE:To obtain the cut surface having fine surface roughness by making the pressure of the other side of a cutting part under a specific value to suck inert gas and cutting a stainless steel plate by a continuous-wave laser beam by the method to cut the stainless steel plate by irradiating it with the laser beam while supplying inert gas to one side of the cutting part. CONSTITUTION:When a work 5 on a table is cut by the continuous-wave laser beam 4 emitted from a high-speed axial flowing type CO2 gas laser beam device, a valve provided to piping 12C is opened to feed compressed air 7 into a draft tube 12. The pressure in the draft tube 12 is made to at least and compressed nitrogen gas 6 is sent in a laser beam nozzle and the work is irradiated and cut with the laser beam. This nitrogen gas 6 is sucked by the compressed air to inject downward from the laser end of an outer cylinder 12a and passed through the cutting part at the high speed as the laminar flow and exhausted downward like arrows 6a and 6b. By this method, the stainless steel plate which is hardly subjected to dross-less cutting can be cut without dross with the fine surface roughness.

8. 发明专利

JPH02155588A METHOD AND DEVICE FOR LASER CUTTING 失效
公开(公告)号：JPH02155588A
公开(公告)日：1990-06-14
申请号：JP30883188
申请日：1988-12-08
申请人： TOSHIBA CORP
发明人： TAKAISHI KAZUTOSHI , YAMADA KIYOSHI
IPC分类号： B23K26/38 , B23K26/14
摘要： PURPOSE:To execute the laser cutting for obtaining a cutting plane whose roughness is small by providing a suction device of inert gas which passes through a cutting part on a metallic plate, supplying compressed air of specific pressure to the device and exhausting the inert gas, and using an emitted light of a high speed axial-flow type carbon dioxide gas laser equipment as a laser light. CONSTITUTION:Inert gas 6 is supplied to one side of a work 5 of a metallic plate, and by irradiating this one side by a laser light 4, the metallic plate work 5 is brought to laser cutting. In this state, on the other side of the metallic plate work 5, suction devices 11, 12 to which the inert gas 6 flows in through a cutting part are provided. Subsequently, by supplying compressed air 7 of pressure of at least 5kgf/cm to the middle of this suction device 12, the inert gas is exhausted. An emitted light of a high speed axial-flow type carbon dioxide gas laser equipment is used as the laser light 4. In such a way, the laser cutting for obtaining a cutting plane whose roughness is small can be executed.

9. 发明专利

JPH0215892A LASER CUTTING METHOD FOR PLATE OF BRITTLE MATERIAL 失效
公开(公告)号：JPH0215892A
公开(公告)日：1990-01-19
申请号：JP16494788
申请日：1988-07-04
申请人： TOSHIBA CORP
发明人： TAKAISHI KAZUTOSHI , SUGIYAMA SADAO , YAMADA KIYOSHI
IPC分类号： B23K26/38
摘要： PURPOSE:To easily and speedily cut off a plate material irrespective of its thickness with a laser beam machine of small capacity by providing a V-shaped notch in laser beams on one side of the plate material, then, lowering the temperature of this plate material to the room temperature, then, irradiating laser beams to the bottom part of the V-shaped notch again and breaking it. CONSTITUTION:The laser beams 2 emitted from a laser beam oscillator 1 is bent by a reflector 3 downward, condensed by a condenser 4 stored in a nozzle head, irradiated to a thick steel plate 5 to form a rectilinear or nearly rectilinear notch 5a on the surface of the steel plate 5. Then, this preworked steel plate 5 is returned to the original point and carbon dioxide gas laser beams 2 irradiates the lower end of the notch 5a. Then, the steel plate 5 receives a quick thermal shock, a crack is generated from the bottom of the notch 5a, arrives at the lower surface to break the steel plate instantly. In this manner, a thick plate can be cut off easily even by a laser beam machine of small capacity.

10. 发明专利

JPS6488103A LASER POSITION DETECTING DEVICE 失效
公开(公告)号：JPS6488103A
公开(公告)日：1989-04-03
申请号：JP24387687
申请日：1987-09-30
申请人： TOSHIBA CORP
发明人： SANO NAOTO , AOKI HIDEKAZU , YAMADA KIYOSHI
IPC分类号： H01S3/00 , G01B11/00 , G01J1/00 , G01M11/00
摘要： PURPOSE:To easily detect the optical path position of laser light by arranging thermocouples at equal intervals at the periphery of a disk which has a passing hole for the laser light in its center part, detecting temperature while moving them to the center of the hole, and performing arithmetic operation. CONSTITUTION:The passing hole 2 for the laser light is bored in the disk 4. When the disk 15 is rotated by a motor 15 through a ball screw 13 and a force receiver 12, four thermocouples 3 move toward the center radially through a guide window 8 and a pin 11. When the signal levels of the four thermocouples 13 reach a predetermined level, positions a-d are detected by an encoder 16 coupled with the motor 15. At this time, the quantities a+b/2 and c+d/2 of deviation of the laser light passing through the hole 2 from the center of a base 1 are calculated. Consequently, the optical path position of the laser light is easily detected.

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