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1. 发明专利

JPH0697639A METHOD AND EQUIPMENT FOR FLUX COATING 失效
公开(公告)号：JPH0697639A
公开(公告)日：1994-04-08
申请号：JP24301392
申请日：1992-09-11
申请人： HITACHI LTD
发明人： NISHINO TERUMICHI , MOROI FUKAMIZU , OYAMA ZENSHIRO , SAWADA TSUTOMU , AKAOSUGI MASAMI
IPC分类号： H05K3/34 , H05K3/00
摘要： PURPOSE:To realize the most suitable flux coating free from flux attaching to mounted parts on a printed board, by spreaing flux on the rear of the printed board from below the printed board, while blowing air or atmospheric gas against the upper surface of the printed board on which insertion parts are mounted. CONSTITUTION:A blower unit 2 is equipped with a gas introducing inlet 9 for introducing atmospheric gas A, a buffer chamber 10, and a blast blade 8. While the atmospheric gas A is jetted against the upper surface of a printed board 3 and mounted parts from small holes 14 of the blast blade 8, the rear of the printed board 3 is coated with flux 6 from below the printed board 3. The trench diameters of the gas feeding small holes 14 of the blast blade 8 are made different, thereby putting the flow of atmospheric gas or air in order. In other case, the directions of a plurality of blast blades are changed, thereby putting the flow of atmospheric gas or air in over. Hence the flux can be prevented from attaching to the upper surface of the printed board 3 on which insertion parts are mounted and the mounted parts.

2. 发明专利

JPS55126117A MAIN ROTARY SHAFT UNIT 失效
公开(公告)号：JPS55126117A
公开(公告)日：1980-09-29
申请号：JP3387479
申请日：1979-03-22
申请人： HITACHI LTD
发明人： KASHIWA KIYOTAKA , ISHIDA YOSHIHIRO , BETSUI HAJIME , KIKUCHI YOSHIMICHI , AKAOSUGI MASAMI
IPC分类号： F16C32/06
摘要： PURPOSE:To make high accuracy linear motion of a main rotary shaft even though load is applied to the rotary shaft with centers of the shaft and a linear guide set geometrically cocentric with each other and a shaft housing and the guide portion of the guide held by a static pressure gas bearing. CONSTITUTION:When gas flows to a bearing clearance from an external pressure source through a gas supply hole 4, an orifice shutter 5 and a pocket 6, a casing 20 and a linear guide 22 constitute a static pressure gas bearing so that lateral linear motion is made freely. In this case, the axis 23 of a main rotary shaft 23 and that 24 of a linear guide 24 are geometrically coincided but shift from each other by several microns due to the weight of the shaft. The distance of this shift is very small and negligible although resistance is applied as moment to the guide 22 by the load applied to the shaft 31. Thereby, the resistance working on the guide becomes small so that high-accuracy linear motion can be obtained.

3. 发明专利

JPH0679603A ROUNDED AND DEFORMED SHAPE GRINDING WORK DEVICE 失效
公开(公告)号：JPH0679603A
公开(公告)日：1994-03-22
申请号：JP23682292
申请日：1992-09-04
申请人： HITACHI LTD
发明人： KIKUCHI YOSHIMICHI , KURIHARA MAKOTO , AKAOSUGI MASAMI , OTAKA TAKESHI
IPC分类号： B24B19/00
摘要： PURPOSE:To facilitate the grinding of fine roundness a deformed shape by providing a mechanism, which applies a fixed load so that a work is pushed to a tool at the time of reciprocating the work in the axial direction of the tool. CONSTITUTION:When a movable base 6 is reciprocated, a work 10, to which the pushing force is applied by a pushing screw of an arm 9 provided through a parallel spring 8, is reciprocated along the tool. At this stage, roundness of the tool is transcribed to the inside of the work 10 by the tool and ground. In the case where the tool is not rotated, the other end of the tool is fixed by a shaft presser 19 with a fastening screw, and the work 10 is similarly reciprocated to perform the grinding work. In the case of deformed shape working, the tool is formed in response to the deformed shape, and simlarily to the method for fixing the tool, the work 10 is reciprocated to be ground into the desired deformed shape. By this method, grinding of the fine roundness and deformed shape having the feeling of the grinding by the manual working can be performed easily at a low cost.

4. 发明专利

JPS5666550A TRANSMISSION MECHANISM OF TURNING EFFECT 失效
公开(公告)号：JPS5666550A
公开(公告)日：1981-06-05
申请号：JP14124679
申请日：1979-11-02
申请人： HITACHI LTD
发明人： ISHIDA YOSHIHIRO , BETSUI HAJIME , KIKUCHI YOSHIMICHI , KASHIWA KIYOTAKA , AKAOSUGI MASAMI
IPC分类号： F16H7/02 , F16H7/10
摘要： PURPOSE:To prevent the vibration of a drive power source from being transmitted to a mechanism, by rotatably supporting an intermediate shaft in the belt transmission mechanism with a fluid bearing further giving the tension to a belt between the intermediate shaft and a driven shaft by a connecting rod with a vibro-isolator. CONSTITUTION:For an intermediate bearing 18 for rotatably supporting an intermediate shaft 7, a fluid bearing is used to separate the rotary motion system and the supporting system of a 3-knuckle link. Here the bearing rigidity K1 at the side of a drive power source 1 of the intermediate bearing 18 is arranged to a level equal to or not higher than the bearing rigidity K2 at the side of a rotated body 3. To a connecting rod 12 for further giving the tension to a belt 9 between the intermediate shaft 7 and a driven shaft 4, a vibro-isolator 13 is further provided. Here the spring constant K of the vibro-isolator 13 is determined from the below described formula of relation with mass M of the rotated body 3 in such a manner that the characteristic frequency fn of a vibration system is fully low. fn=(1/2pi)(K/M) . In this way, a belt transmitting vibrationless transmission mechanism of turning effect without transmitting vibration of the drive power source 1 can be obtained.

5. 发明专利

JPS5796756A GRINDER 失效
公开(公告)号：JPS5796756A
公开(公告)日：1982-06-16
申请号：JP17095480
申请日：1980-12-05
申请人： HITACHI LTD
发明人： KIKUCHI YOSHIMICHI , ISHIDA YOSHIHIRO , AKAOSUGI MASAMI
IPC分类号： B24B5/10 , B24B5/08 , B24B47/10 , B24B47/16
摘要： PURPOSE:To control working load imposed on the item to be processed by detecting vertical distance between the grinding tool and the item and thereby changing the ascending/descending speed of the grinding tool. CONSTITUTION:A cylinder 19 and a grinding tool 2 are brought down with a designated speed by means of a feeding speed control device 11 through hooks 13, 23. At the moment when the tool 2 reaches the position of predetermined height above the item 1 to be processed, a position detector 21 is actuated and issues a speed control request signal. Upon receiving this signal, the feeding speed control device 11 changes the feeding speed of the cylinder 19 and the grinding tool 2. Thus, the feeding speed can be control at will during repeated change of grinding location without imposing excess working load or impulsive force on the item 1.

6. 发明专利

JPS54139189A LAPPING SAW 失效
公开(公告)号：JPS54139189A
公开(公告)日：1979-10-29
申请号：JP4660678
申请日：1978-04-21
申请人： HITACHI LTD
发明人： ISHIDA YOSHIHIRO , BETSUI HAJIME , KASHIWA KIYOTAKA , KIKUCHI YOSHIMICHI , AKAOSUGI MASAMI
IPC分类号： B24B27/06 , B24B37/00
摘要： PURPOSE:To protect a workpiece and a lapping tool from damage, by adopting the hook and poise action so that the lapping speed does not exceed the feeding speed of a workpiece feeding-speed control unit to prevent excessive lapping load. CONSTITUTION:A hook 9 restricts a guide mechanism 6 of a workpiece I and a feeding speed control unit 8 only in such a manner as not to separate each other; while, a poise 7 always acts on them as to separate each other. The weight of poise 7 is so arranged that it is equal to the sum of the weight of a movable components including the guide mechanism 6 and the workpiece, and the maximum allowable work load, so that the work load which is applied during the operation does not exceed maximum allowable load. Consequently, the workpiece I or a lapping tool 2 that moves in the X direction by a tool carriage mechanism 5, is protected from damage due to excessive work load during the lapping operation.

7. 发明专利

JPH04336947A METHOD FOR PROCESSING MIRROR SURFACE ON INNER WALL OF THIN TUBE 失效
公开(公告)号：JPH04336947A
公开(公告)日：1992-11-25
申请号：JP10244991
申请日：1991-05-08
申请人： HITACHI LTD
发明人： AKAOSUGI MASAMI , NISHINO TERUMICHI , OTAKA TAKESHI
IPC分类号： B24B5/40 , B24B37/20 , B24B37/24 , B24B57/02 , B24D11/00
摘要： PURPOSE:To enable the processing of a mirror surface on the inner wall of a thin tube without chemicals, by applying and adhering abrasive to a strand passed through the thin tube and moving the strand while rotating the thin tube. CONSTITUTION:A strand 2 of a diameter larger than the inner diameter of a thin tube 1 with a mirror surface to be processed is passed through the thin tube 1. A liquid abrasive 3 is coated and impregnated on the strand 2 to pool the abrasive in groove portions in the strand 2. Then the strand 2 is moved in the thin tube 1 while rotating the tube 1, and by the relative motion between the thin tube 1 and the strand 2, the strand 2 can be pressure contacted to the inner wall of the thin tube 1 to mirror grind it with the abrasive 3 applied to the strand 2 and supplied deeply to the end of the tube 1.

8. 发明专利

JPS55112758A PLANE SURFACE GRINDER 失效
公开(公告)号：JPS55112758A
公开(公告)日：1980-08-30
申请号：JP1895479
申请日：1979-02-19
申请人： HITACHI LTD
发明人： ISHIDA YOSHIHIRO , BETSUSHIYO HAJIME , KIKUCHI YOSHIMICHI , KASHIWA KIYOTAKA , AKAOSUGI MASAMI
IPC分类号： B24B7/04
摘要： PURPOSE:To process the work of a thin plate-shape with superhigh accuracy, by applying a cross feed operation to the rotary table for mounting the work and a traverse feed operation to the grindstone-rotating spindle. CONSTITUTION:When a work 1 is processed by a surface grinder, a rotary table 7 and a grindstone 4 are firstly rotated, and a slider 8 is reciprocated to perform a surface processing work by applying the Y-directional traverse feed operation to the grindstone 4 of a rotary spindle 5. Sencondly, a rotary spindle of the rotary table 7 is slightly lifted to perform a thickness adjusting work of the work 1 placed on and fixed to the rotary table 7 by applying two-directional cross feed operations. That is, the surface processing and the thickness adjusting works are alternately operated and repeated to finish the work 1 to a desired thickness and surface precision.

9. 发明专利

JPS54106991A GRINDER 失效
公开(公告)号：JPS54106991A
公开(公告)日：1979-08-22
申请号：JP1244578
申请日：1978-02-08
申请人： HITACHI LTD
发明人： ISHIDA YOSHIHIRO , BETSUI HAJIME , KASHIWA KIYOTAKA , KIKUCHI YOSHIMICHI , AKAOSUGI MASAMI
IPC分类号： B24B47/10 , B24B47/00
摘要： PURPOSE:To do away with excessive machining load and impact on work piece for lesser machining distorsion by switching between feeding speed control of a feed unit and feeding speed control of machining load according to the grinding condition. CONSTITUTION:As long as the grinding load does not exceed the force of the weight 22, i.e., the contact of a hook 30 is not released, or in other words, under the working condition where the feed speed is regulated within the range of the grinding capacity(speed) of the grindstone 32, a feed unit 20 sends a grindstone rotating unit 16 near to a rork rotating unit 12, successfully understaking slow feed at the beginning of cutting or control of stopping location of cutting. When the speed of the feed unit 20 becomes greater than the grinding capacity (speed) of the grindstone 32, the contact of the hook 30 is released to equalize the grinding load and the force of the weight 22. Thus, work piece 1 is machined at the rate suitable to the cutting quality of the grindstone 32 under the machining load control method.

10. 发明专利

JPS58151400A WORKING METHOD OF BRITTLE MATERIAL 失效
公开(公告)号：JPS58151400A
公开(公告)日：1983-09-08
申请号：JP3392682
申请日：1982-03-05
申请人： HITACHI LTD
发明人： ISHIDA YOSHIHIRO , KASHIWA KIYOTAKA , KIKUCHI YOSHIMICHI , AKAOSUGI MASAMI
IPC分类号： C23F1/00 , B23P17/00 , C30B33/00
摘要： PURPOSE:To form a socket hole of a rectangular shape having a sharp sectional shape, by adhering one surface of a brittle material to a fixing member by means of wax, machining a socket hole in the other surface, and etching away the machined surface. CONSTITUTION:A brittle material 10 with its surface 10B to be worked with a socket hole faced upward is fixed to a work holder 20 by using wax 18. A work holder 20 is placed on a work shank 22, and is so positioned that the center of the hole to be worked coincides with the center of the shank 22, whereafter both are coupled by means of clamp screws 24. An earmark (b) on the working surface side formed on the surface 10B side is used as a reference line for positioning in this case. The material 10 is rotated with a spindle for rotating the work and the material is worked. The wax 18 is removed and the brittle material is removed upon ending of the machining. The part which is not required to be removed is masked 32, and the work hardened surface layer produced by the machining of the socket hole is removed by using an etching soln. 34.

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