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1. 发明专利

JPH0360628B2 失效
公开(公告)号：JPH0360628B2
公开(公告)日：1991-09-17
申请号：JP18015683
申请日：1983-09-30
申请人： HITACHI LTD
发明人： TANAKA KATSUHISA , NOTO KOICHI , SUGAWARA TAKAMI
IPC分类号： B24B47/02 , B24B41/04 , B24B47/04 , B24B47/12

2. 发明专利

JPS63191572A POLISHING DEVICE 失效
公开(公告)号：JPS63191572A
公开(公告)日：1988-08-09
申请号：JP1830687
申请日：1987-01-30
申请人： HITACHI LTD
发明人： NOTO KOICHI , OKU TSUNEO
IPC分类号： B24C3/08 , B24C3/00 , B24C3/32 , B24C9/00
摘要： PURPOSE:To make it possible to polish a surface to be polished under a non- contact condition efficiently by arranging a gap control device for controlling via a motor the gap between a workpiece and a tool based on the pressure of abrasive particle liquid flushed to the workpiece so that the pressure is maintained at a constant value. CONSTITUTION:The surface of a workpiece 1 is polished by flushing and passing abrasive particle liquid from holes of a piping 7 and a tool 3 into a gap between the tool 3 and the workpiece 1 at a high speed. At this time, the pressure of the abrasive particle liquid 5 is detected with a pressure sensor 8 and the detected value is inputted into a comparator circuit of a gap control device, to be compared with a preset value. When the detected value is smaller as a result, or the gap is greater than a specified value, a motor 11 is driven by a command from the gap control device 9 to lower a support table 10 of the tool 3 toward the workpiece 1 so that the gap between the tool 3 and the workpiece 1 is maintained at the specified value. The workpiece is polished under this non-contact condition.

3. 发明专利

JPS6357167A CHAMFERING DEVICE 失效
公开(公告)号：JPS6357167A
公开(公告)日：1988-03-11
申请号：JP20140986
申请日：1986-08-29
申请人： HITACHI LTD
发明人： OKU TSUNEO , TAMURA TOSHIO , YAMASAKA MINORU , NOTO KOICHI
IPC分类号： B24B9/00 , B24B19/26 , B24B21/00
摘要： PURPOSE:To enable a chamfering process for asymmetrical shape by machining one of the outer edges of a machining object on a workpiece, using the oscillation thereof. CONSTITUTION:In the case of chamfering for asymmetrical shape, a workpiece oscillation range setting sensor 9 is fitted within a range corresponding to an angle of + or -alphaformed with one diagonal line in the direction of the minor axis of a workpiece 6. And the workpiece 6 is set to a holder 8 and oscillated within an oscillation range of + or -alpha. Also, the outer surface of a cylindrical grinding stone is oscillated in the oscillation direction 19 of the holder 8, thereby pressing the workpiece 6 in the direction of the rotary axis thereof. Concurrently therewith, the outer edge of the workpiece 6 is pressed to the outer surface of the cylindrical grinding stone, thereby processing the chamfering part 28 of the workpiece 6 and after preliminarily processing until a position corresponding to a difference X between the center 27 of an ellipse and the center 26 of the workpiece 6, the workpiece 6 is actuated for turn and pressing in the direction of the rotary axis. Also, the outer surface of the cylindrical grinding stone is oscillated in the oscillation direction 19 of the holder 8. The outer edge of the workpiece 6 is thereby pressed to the outer surface of the cylindrical grinding stone for a chamfering process.

4. 发明专利

JPS63272463A TOOL FOR SMOOTHING WORK 失效
公开(公告)号：JPS63272463A
公开(公告)日：1988-11-09
申请号：JP10420887
申请日：1987-04-30
申请人： HITACHI LTD
发明人： NOTO KOICHI , OKU TSUNEO , KAYABA NOBUO
IPC分类号： B24B39/02
摘要： PURPOSE:To smoothen the inner surface of a hole by carrying out working by a spherical tool whose bulged part on the inner surface of the hole is made larger to the degree permitting smooth working than the hole of a workpiece and a cylindrical tool having the tapered part whose top edge part is smaller than the hole. CONSTITUTION:As for a spherical tool, a ball-shaped part 13 having an outside diameter (d) is formed integrally with a tool shaft 12. As for a cylindrical tool, tapered parts 17 and 18 are formed at the top edge part of a tool shaft 15, and the intermediate part 16 is formed to a cylindrical form having an outside diameter of (d). The outside diameter of the top edge part 19 of a tapered part 18 is made less than the dimension D of the hole diameter. Further, each dimension (d) of the outside diameter of the ball-shaped surface 13 of the spherical tool and the outside diameter (d) of the cylinder-shaped part 126 is made larger than the dimension D of the hole diameter. The tool is pushed into the hole on a body 1 through revolution, and after reaching a prescribed depth, the tool is lifted up. Thus, the hole inner surface can be made smooth.

5. 发明专利

JPS63260754A CHAMFERING DEVICE 失效
公开(公告)号：JPS63260754A
公开(公告)日：1988-10-27
申请号：JP9101487
申请日：1987-04-15
申请人： HITACHI LTD
发明人： OKU TSUNEO , TAMURA TOSHIO , YAMASAKA MINORU , NOTO KOICHI
IPC分类号： B24B9/00 , B24B19/26 , B24B21/00
摘要： PURPOSE:To enable the outer edge part of a magnetic head or the like to easily perform chamfering of asymmetrical shape, by eccentrically placing the rotary center for the chamfered objective surface center of a workpiece and chamfering the outer edge part giving a predetermined tilt to the periphery of a cylindrical tool. CONSTITUTION:Holding a workpiece 6 of magnetic head or the like, forming a rectangular parallelepiped shape, to a holding part 8, when chamfering of oval shape 2aX2b with a point P serving as the center is performed for a chamfering objective surface 2AX2B with a point O serving as the center, the rotary center of the workpiece 6 is displaced from ll' to mm' by an X-direction eccentric amount adjusting screw 9. And setting a tilt angle range of the workpiece 6 to a control unit 21, adjusting an eccentric amount of an eccentric disc 14 and performing rotary motion and swivel motion in a swivel direction 5 of a cylindrical grinding wheel 1, a chamfering device, which rotates the workpiece by a motor 16 in a direction 7 while changing tilt angle continuously by swiveling a rotary table 18, chamfers the workpiece pressing it by a spring 11. Further for eccentricity, when it is performed in an axial direction bb, a Y-direction eccentric amount adjusting screw 10 is used. In this way, asymmetrical chamfering can be easily performed.

6. 发明专利

JPS6315661B2 失效
公开(公告)号：JPS6315661B2
公开(公告)日：1988-04-05
申请号：JP9690582
申请日：1982-06-08
申请人： HITACHI LTD
发明人： OOHASHI KUNIAKI , SUGYAMA TOSHIO , MYAGAWA MASATAKE , NOTO KOICHI , MOGI SHINICHIRO , SAEKI YOSHIHIRO , SHIBA MASATAKA
IPC分类号： G02B7/00 , G11B7/08 , G11B7/135

7. 发明专利

JPS6328512A POLISHING TOOL 失效
公开(公告)号：JPS6328512A
公开(公告)日：1988-02-06
申请号：JP17153686
申请日：1986-07-23
申请人： HITACHI LTD
发明人： NOTO KOICHI , KAWAI TSUNEO
IPC分类号： B23H5/10
摘要： PURPOSE:To make it possible to polish an aspherical surface of a lens die with a high degree of accuracy, by making a conductive film or a cloth foil constituting a negative electrode cope with the aspherical surface, through the intermediary of a resilient material or a polishing fabric so that energization may be made between the negative electrode and the workpieces. CONSTITUTION:A workpiece 11 is secured on a rotary table 9, and an energization anode terminal slide on the table 9 so that a part to be polished of the workpiece 11 is applied with a constant d.c. voltage irrespective of the rotation of the table 9. Further, a polishing tool moves along the outer surface 8 of the workpiece having an aspherical surface while it vibrates in the direction of A-A, and simultaneously, electric discharge may be made between a film 13 and the workpiece 11. Further, a mixed solution of abrasive grain and electrolyte exists on the outer surface 8 of the workpiece 11 to be subjected to electrolytic machining. Thus, electrolytic polishing and mechanical polishing using the abrasive grain are simultaneously carried out, flexibly coping with the aspherical surface without using various kinds of rigid structure polishing tools, thereby it is possible to provide an ultra-accurate finished surface with no scratches.

8. 发明专利

JPS62220901A PHOTODIFFRACTION DEVICE 失效
公开(公告)号：JPS62220901A
公开(公告)日：1987-09-29
申请号：JP6422286
申请日：1986-03-24
申请人： HITACHI LTD , HITACHI CHEMICAL CO LTD
发明人： ARIMA HIDEO , YOKONO ATARU , NORO TAKANOBU , NOTO KOICHI , SUDO RYOICHI , OKUDAIRA HIROAKI , ISHIBASHI TAKEHIKO , TSUCHIDA SATORU
IPC分类号： G02B5/18
摘要： PURPOSE:To improve transmittancy, homogeneity and moldability of a material, and to improve diffraction efficiency by forming the diffraction grating, using an epoxy resin composition contg. a specific org. phosphorous compd. CONSTITUTION:The composition comprising the epoxy resin, a curing agent, a hardening accelerator and at least one kinds of the org. phosphorous compds. shown by formulas I, II and III, is used for the grating. In the formula, X is halogen, an aryloxy or an alkyloxy group, R1-R8 are each hydrogen, halogen or 1-10C monovalent aliphatic or an aromatic group, and R1-R8 may be the same or the different each other. As the resin composition contg. org. phos phorous compd. can be effected a cast molding, the resin composition has the good moldability, and is easy to form the diffraction grating. As the resin compo sition has a high dimensional accuracy, a high diffraction efficiency is obtd, and as the production of the diffraction grating is simplified by using the pre scribed composition, the production steps thereof are remarkably reduced.

9. 发明专利

JPS61230815A POLISHING DEVICE 失效
公开(公告)号：JPS61230815A
公开(公告)日：1986-10-15
申请号：JP7094585
申请日：1985-04-05
申请人： HITACHI LTD
发明人： NOTO KOICHI , KAWAI TSUNEO
IPC分类号： B23H5/00 , B23H5/08
摘要： PURPOSE:To polish a non-spherical face having the curvature of about several (mm) with high efficiency by combining the mechanical polishing function for feeding a micro-diameter polishing tool continually or automatically and the electrolytic function. CONSTITUTION:A work 1 is set in the electrolyte 22 in a liquid sump 14 and electrolitically machined by supplying power through the terminals 13, 16. A micro-diameter tool 12 is fixed to the lower end section of tool sleeve 31 and lowered by the amount corresponding with the abrasion at the tip of tool 33 through rotation of a feed screw 30. The tool 12 can also be lifted/lowered through rotation of shaft 27 which is driven by a motor. Consequently, the work 1 can be polished highly efficiently through combination of electrolytic machining caused on application of D.C. voltage of 10-20V and mechanical polishing for feeding the tool 12.

10. 发明专利

JPH0632887B2 失效
公开(公告)号：JPH0632887B2
公开(公告)日：1994-05-02
申请号：JP20140986
申请日：1986-08-29
申请人： HITACHI LTD
发明人： OKU TSUNEO , TAMURA TOSHIO , YAMASAKA MINORU , NOTO KOICHI
IPC分类号： B24B9/00 , B24B19/26 , B24B21/00

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