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1. 发明专利

JPH02202348A VOICE COIL MOTOR 失效
公开(公告)号：JPH02202348A
公开(公告)日：1990-08-10
申请号：JP1910089
申请日：1989-01-27
申请人： HITACHI METALS LTD , HITACHI LTD , HITACHI CONSTRUCTION MACHINERY
发明人： IMAI KUNINORI , SHIOKAWA TAKEJI , KATO SHIGEO , UMEHARA TERUO , TAKETOMI MASAKI , ISHIKAWA KIYOSHI
IPC分类号： H02K33/18
摘要： PURPOSE:To obtain a voice coil motor smooth in operation and excellent in high-speed responding properties by forming an air bearing within a center yoke between a coil supporting member formed in the manner of freely moving in the longitudinal direction and at least one of said center yoke or a magnet. CONSTITUTION:By introduction of air from an air intake 14a, said air is jetted from a hole 14 and an air port 15 into the hole 13 of a center yoke 2 to form an air bearing so that a support shaft 12 rises in the non-contact state with said center yoke 2. Therefore, when power is applied to a coil 7, a head 10 can be positioned relative to a magnetic disc 11. About 0.5mm gaps are respectively secured between a moving member 5 and said coil 7 and between the center yoke 2 and a magnet 3. Accordingly, even if said support shaft 12 provided integrally with said moving member 5 rises within the hole 13 of said center yoke 2 and moves in the longitudinal direction, said both parts are prevented from coming into contact with each other to obstruct the movement of said movable member 5.

2. 发明专利

JPH02222834A ULTRASONIC PROBE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH02222834A
公开(公告)日：1990-09-05
申请号：JP9009789
申请日：1989-04-10
申请人： HITACHI CONSTRUCTION MACHINERY , HITACHI LTD
发明人： SATO KAZUO , KANDA HIROSHI , KATO SHIGEO , IMAI KUNINORI , SHIOKAWA TAKEJI , TANAKA SHINJI , ISHIKAWA KIYOSHI , ONOZATO AKIMASA , HASHIMOTO HISAYOSHI , TAMURA MORIO , HATANO KAZUYOSHI , SATO FUJIO , ICHIYANAGI TAKESHI , TANAKA KIYOSHI , KAWANUMA TAKAO
IPC分类号： G01N29/24 , G10K11/30 , H04R1/34
摘要： PURPOSE:To enable the manufacturing of an acoustic lens having a lens surface with a small curvature radius at a low cost by building up a lens surface of an acoustic lens with an etching profile formed by etching a substrate material as lens body. CONSTITUTION:First, a layer 12 deposited with chromium and gold as mask layer by etching on the surface of a silicon single crystal substrate 11 is formed and moreover, a resist layer 13 is applied thereon. An etching is performed at a plurality of dot-shaped opening 14 formed at the center position of a lens spherical surface to allow the opening of the dot-shaped openings corresponding to a mask layer 12 as well. Then, the resist film 13 is removed away and an etching is performed for the silicone single crystal substrate 11 through the opening 14 of the mask layer 12 to obtain an etching profile 15 of a semi- spherical surface. Subsequently, in addition, an oxide film SiO2 16 is formed on the semi-spherical surface appearing with the removal of the mask layer 12. Then, an undesired part of the SiO2 film 16 is removed and a piezo-electric element 17 is formed on the back side of the substrate, thereby completing an acoustic lens system with a spherical lens surface 18.

3. 发明专利

JPH02164260A MOVABLE CARRIAGE 失效
公开(公告)号：JPH02164260A
公开(公告)日：1990-06-25
申请号：JP31641588
申请日：1988-12-16
申请人： HITACHI LTD , HITACHI CONSTRUCTION MACHINERY
发明人： IMAI KUNINORI , SHIOKAWA TAKEJI , KATO SHIGEO , ISHIKAWA KIYOSHI , IKEDA TOSHIMICHI , OTAKE HIROSHI
IPC分类号： G01N29/26 , B23Q1/38 , F16C32/06 , H02K33/18 , H02K41/035
摘要： PURPOSE:To move a movable carriage integrated with an external member on a high speed by forming an air bearing between an internal member and the external member fitted thereto, by coupling a coil of a voice coil motor to the external member and by moving the external member. CONSTITUTION:A voice coil motor is formed by a center yoke 101, two side yokes 102, a coil 8 and two magnets 11. Two legs 141 is adhered to the coil 8, at the top of which a member 15 square in section is installed. With a sheath member 14, a slider, the square member 15 is surrounded with a clearance, between which air is blown in from an air supply pipe 16 and the air is exhausted from an air blowout hole 152 to form an air bearing 151. A current is caused to flow to the coil 8 and a movable carriage 301 coupled to the sheath member 14 is moved. The miniature and lightweight movable carriage moving at a high speed can thereby be manufactured easily. It is suitable for a high speed scanning of a specimen and a probe, as in an ultrasonic microscope.

4. 发明专利

JPH01242456A PRODUCTION OF RARE EARTH OXYSULFIDE SINTERED COMPACT 失效
公开(公告)号：JPH01242456A
公开(公告)日：1989-09-27
申请号：JP6744888
申请日：1988-03-23
申请人： HITACHI LTD , HITACHI MEDICAL CORP , HITACHI METALS LTD
发明人： TODA AKIZO , YAMADA TAKAMICHI , ITO YUKIO , IMAI KUNINORI , KANETOMO MASABUMI , KATO SHIGEO , TAKEUCHI HIROYUKI , TSUKUDA YASUO
IPC分类号： C04B35/547 , C04B35/00 , C04B35/64
摘要： PURPOSE:To produce the title sintered compact having luminous output with small scattering in a good yield by filling a specified substance together with rare earth oxysulfide powder in a metal capsule, by sealing after making vacuous and by heating and pressing. CONSTITUTION:In the production of rare earth oxysulfide (hereinafter referred to as Gd2O2S) sintered compact by filling Gd2O2S powder in the metal capsule, by sealing after making the capsule vacuous and by heating and pressing, the substance having higher vapor pressure of sulfur at >=500 deg.C than that of Gd2O2S (e.g., FeS2, CuS, Ag2S, PbS) is made to coexist in the capsule. Thereby, the decomposition of Gd2O2S at a high temp. is suppressed and the scattering of the characteristics of Gd2O2S sintered compact is remarkably decreased to obtain the sintered compact suitable as scintillator for X-ray CT.

5. 发明专利

JPH01261258A PRODUCTION OF CERAMIC SCINTILLATOR 失效
公开(公告)号：JPH01261258A
公开(公告)日：1989-10-18
申请号：JP8738488
申请日：1988-04-11
申请人： HITACHI LTD , HITACHI METALS LTD , HITACHI MEDICAL CORP
发明人： KANETOMO MASABUMI , IMAI KUNINORI , ITO YUKIO , TAKEUCHI HIROYUKI , YAMADA TAKAMICHI , TODA AKIZO , TSUKUDA YASUO
IPC分类号： C04B35/547 , C04B35/00 , C04B35/64
摘要： PURPOSE:To obtain a ceramic scintillator having high light-emission intensity, extremely low scattering of the intensity and excellent uniformity, by adopting a pressing mechanism with a hydrostatic press in the vacuum sealing step in the sintering of a rare-earth metal oxysulfide by HIP process. CONSTITUTION:A rare-earth metal oxysulfide 1 is vacuum-sealed in a metal capsule 2 and sintered under pressure. In the above process, the vacuum-sealing of the metal capsule is performed with a pressing mechanism without applying vibration to the metal capsule. A sealed part 9 can be formed at the tip end of a pipe 3 by using a hydraulic press 6 as a pressing means 7 and pressing the vacuum-sealing part 5 of the pipe 3 protruded from the metal capsule 2 with a cylindrical cemented carbide tip 8.

6. 发明专利

JPH02193561A LINEAR MOTOR 失效
公开(公告)号：JPH02193561A
公开(公告)日：1990-07-31
申请号：JP1335189
申请日：1989-01-23
申请人： HITACHI METALS LTD , HITACHI LTD
发明人： UMEHARA TERUO , TAKETOMI MASAKI , IMAI KUNINORI , SHIOKAWA TAKEJI
IPC分类号： H02K33/18 , H02K41/035
摘要： PURPOSE:To integrate a thrust generating unit with a bearing unit and reduce the component of vibration upon movement by a method wherein a static pressure gas bearing is formed by a plurality of axial recesses, provided on the outer peripheral surface of a center yoke, and axial sleeves opposed to the recesses provided on a movable member. CONSTITUTION:A gap is provided between a sleeve 17 and the outer peripheral surface of a center yoke 2 and the sleeve 17 is arranged movably into the axial direction under non-contacting condition. A coil 7 is wound around the sleeve 17 to form a movable member 5. A plurality of recesses 18 is provided on the outer peripheral surface of the center yoke 2. When an air supplying hole 19 is connected to a compressed gas supplying source (not shown in a diagram), compressed gas is blown through the air supplying holes 20 into the recesses 18 opposed to the sleeves 17 whereby the sleeve 17 is levitated under non-contacting condition with the center yoke 2 and a static pressure gas bearing may be formed. When the coil 7 is energized with currents of normal and reverse directions under this condition, the movable member 5 may be moved to lateal directions or in axial directions thereof.

7. 发明专利

JPH07204920A END MILL 失效
公开(公告)号：JPH07204920A
公开(公告)日：1995-08-08
申请号：JP608494
申请日：1994-01-25
申请人： HITACHI LTD
发明人： NINOMIYA CHIKAKAZU , SHIOKAWA TAKEJI , IMAI KUNINORI , SASAKI HIDEAKI
IPC分类号： B23C5/10
摘要： PURPOSE:To reduce excessive load, extend tool life, and enable stable processing in the case of carving a flat work to be processed by having cavity in the center part of a bottom blade and giving a cutting function to the side face of the inside of the cavity. CONSTITUTION:Cavity 1 is positioned in the center part of a bottom blade 3 and an internal circumference blade 2 connecting to the bottom blade 3 is formed on the side face of the inside of the cavity 1. The bottom blade 3 and an outer circumference blade 4 have symmetric shapes. The appropriate intermediate/low angle 8 of the bottom blade is approximately 0-1 deg.. Cavity depth 7 is preferable to be set to approximately 1-2mm in the case of an end mill having the outside diameter 5 of approximately 10mm or less and approximately 2-3mm, in the case of an end mill the diameter of approximately 10-20mm. The inside diameter 6 of the internal circumference blade 2 is preferable to be set from approximately 0.1 time to 0.8 time of the outside diameter 5 and more preferable, approximately from 0.4-0.7 time of the outside diameter 5.

8. 发明专利

JPH06155130A END MILL 失效
公开(公告)号：JPH06155130A
公开(公告)日：1994-06-03
申请号：JP30206392
申请日：1992-11-12
申请人： HITACHI LTD
发明人： SHIOKAWA TAKEJI , IMAI KUNINORI , NINOMIYA CHIKAKAZU , SASAKI HIDEAKI
IPC分类号： B23C5/10 , B23P15/34
摘要： PURPOSE:To very well improve roughness of a cut surface by eliminating unbalance provided in a parentage edge structure, so as to obtain a stable rotary motion with vibration very small generated by rotation. CONSTITUTION:An amount corresponding to an unbalance amount in a gash part A3 is balanced by lightening a part of a rake face corner 501. That is, by performing lightening by digging a groove 502 in an R part of the rake face corner, balancing can be relatively easily performed. This work is performed by a grooving grinding wheel 16, but not necessary for sticking to this dimensional shape. The shape is changed by radius curvature, grinding wheel width, depth, etc., but in a word by performing lightening per this position, balancing may be made. By decreasing the radius of curvature of the rake face corner itself to perform lightening, balancing can be also obtained.

9. 发明专利

JPH06114671A PROCESSING SYSTEM 失效
公开(公告)号：JPH06114671A
公开(公告)日：1994-04-26
申请号：JP26459092
申请日：1992-10-02
申请人： HITACHI LTD , HITACHI SETSUBI ENG KK
发明人： TANI MITSUKIYO , SHIOKAWA TAKEJI , IMAI KUNINORI , NINOMIYA CHIKAKAZU , WAI SHINICHI , SASAKI HIDEAKI , NAKAMURA YUKIO , MORI SUSUMU , SUGAWARA KOICHI
IPC分类号： B23Q7/00 , B23Q7/04 , B23Q11/00 , B23Q41/02
摘要： PURPOSE:To establish a consistent through processing from the feed of the material till output of a complete product without requiring stop of the system by furnishing a supply mechanism, transport mechanism, vacuum piping mechanism, inverting mechanism, washing mechanism, and exhausting mechanism. CONSTITUTION:A work on a pallet is held by vacuum suction for rear processing and sent to an inverting mechanism 5 by a transport mechanism. The work is put on an inversion plate 52 and separated by turning off the vacuum suction of the transport head. With this plate 52 the work is held by a suction pad 55 while the suction pump 55 of the inverting mechanism 5 is operated and is transferred onto a receptacle table 51 by inverting the plate 52. The work on the table 51 is again held by the transport mechanism, washed ultrasonically in a washing machine 4, and sent onto a pallet changer 2. During the inverting motion, the pallet is re-put in empty condition into a machining center 3 to undergo washing of its oversurface, and upon coolant wash and air wash, is returned to the pallet changer 2 to await a work after inversion.

10. 发明专利

JPH0523571A VACUUM CHAMBER 失效
公开(公告)号：JPH0523571A
公开(公告)日：1993-02-02
申请号：JP17923491
申请日：1991-07-19
申请人： HITACHI LTD
发明人： UMEO KOUJI , WAI SHINICHI , IMAI KUNINORI , SASAKI HIDEAKI
IPC分类号： B01D53/26 , B01J3/02 , B23K15/06
摘要： PURPOSE:To ensure that a vacuum pumping time is shortened and stabilized by providing a system to supply a dry air to a vacuum chamber through a tank capable of storing a fixed amount of dry air constantly and a means for preventing an atmospheric air from becoming entrained into the vacuum chamber during the opening of a door for operation. CONSTITUTION:A dry air sent from a dry air source is stored in an air tank 3 through an air tank supply pipe 2, and then is supplied to a vacuum chamber 5 by a predetermined amount through a pipe for supply to a vacuum chamber 5 by control of a solenoid valve. The air used contains a low percentage of moisture so that the amount of moisture attaching to the vacuum chamber 5 is extremely small. Therefore, the effect of minimizing a vacuum pumping time is obtained through a pipe for vacuum pumping 11. In addition, the dry air sent from a dry air source is supplied to the front of a door for operation 7 through a pipe for air shower 6 to form a dry air shower 12 and thus the strainment of an atmospheric air into the vacuum chamber 5 is prevented.

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