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1. 发明专利

JP2003220506A CHUCK 审中-公开
公开(公告)号：JP2003220506A
公开(公告)日：2003-08-05
申请号：JP2002020644
申请日：2002-01-29
申请人： OKUMA & HOWA MACHINERY LTD , HOWA MACHINERY LTD
发明人： GOTO TAKAYUKI , UEDA KOICHI
IPC分类号： B23B31/12
摘要： PROBLEM TO BE SOLVED: To curb a decline in the grasping power of a chuck due to centrifugal force, to enhance the grasping accuracy and rigidity of the chuck, and to make the chuck smoothly adapt to high-speed rotation, heavy cutting, and high- precision processing, as well as to gripping of thin-wall cylindrical work, in particular. SOLUTION: Many master jaws 10 and 12 are supported at two (front and rear) positions of a chuck body 1. A front centering jaw 14, designed for centering of work W, is formed with three front master jaws 10A, while a front grasping jaw 15, which grasps the work subsequently to grasping by the front centering jaw 14, is formed in remaining front master jaws 10. Further, a rear centering jaw 21, designed for centering of work W, is formed in three rear master jaws 12A, while a rear grasping jaw 22, designed to grasp the work W subsequently to grasping by the rear centering jaw 21, is formed in the remaining rear master jaws 12. A wedge bar 24, extending in the direction of the chuck axial line, is linked in a wedge-form connection with all the master jaws 10 and 12, while a guidance hole, into which the wedge bar 24 will be inserted, is formed on the chuck body 1. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2007000956A DRAW-DOWN CHUCK 审中-公开
公开(公告)号：JP2007000956A
公开(公告)日：2007-01-11
申请号：JP2005182389
申请日：2005-06-22
申请人： HOWA MACHINERY LTD
发明人： YOSHIDA SHIN
IPC分类号： B23B31/00
摘要： PROBLEM TO BE SOLVED: To provide a draw-down chuck, capable of maintaining the sealing performance of a sealing member such as an O-ring over a long period of time without deterioration. SOLUTION: A draw sleeve 6 is provided with a fluid passage 13 for supplying a fluid to a chuck body 4, and a first sliding part 11 and a second sliding part 12 supported on the chuck body 4. On the other hand, the chuck body 4 is provided with a sliding support part 8 supporting the first sliding part 11 and a fluid sealing part 9 supporting the second sliding part 12 and sealing a gap to the second sliding part 12 by the O-ring 14 to inhibit leakage of the fluid supplied to the chuck body 4 so that the gap to the second sliding part 12 in the fluid sealing part 9 is larger than the gap to the first sliding part 11 in the sliding support part 8. COPYRIGHT: (C)2007,JPO&INPIT

3. 发明专利

JP2004195613A Cutting feed speed control method and device of numerical control machine tool 审中-公开
公开(公告)号：JP2004195613A
公开(公告)日：2004-07-15
申请号：JP2002369187
申请日：2002-12-20
申请人： Okuma & Howa Machinery Ltd , 大隈豊和機械株式会社
发明人： TANAKA HISAHIRO , SAKURAI YASUO , KUMAZAKI HIROYOSHI
IPC分类号： B23Q15/12 , G05B19/416
摘要： PROBLEM TO BE SOLVED: To provide a cutting feed speed control method and a device of a numerical control machine tool controllable by imposing respectively different correction rates when a main spindle load rate exists inside and outside a management range by eliminating a control delay to a sudden load change by adding a main spindle rotating speed to a control parameter of a cutting feed speed.
SOLUTION: A monitoring level and an alarm level are set in a main spindle rotating speed management level setting part to cope with the sudden load change by comparing this preset value with a read main spindle rotating speed, and are managed by comparing with the main spindle load rate arithmetically operated by determining and reading a management limit on the main spindle load rate. Reference override is corrected by applying a correction factor of high-low two stages every time when the main spindle load rate exceeds the management limit, and the cutting feed speed is controlled by outputting an override value corrected so as to early return to a 100% override value.
COPYRIGHT: (C)2004,JPO&NCIPI

4. 发明专利

JP2003253614A WATER SPRINKLER OF INDUSTRIAL VEHICLE 审中-公开
公开(公告)号：JP2003253614A
公开(公告)日：2003-09-10
申请号：JP2002052518
申请日：2002-02-28
申请人： HOWA MACHINERY LTD
发明人： TOMITA MASATOSHI
IPC分类号： E01C19/26
摘要： PROBLEM TO BE SOLVED: To provide a water sprinkler of an industrial vehicle for easily eliminating mesh-clogging of a filter. SOLUTION: This water sprinkler 1 is constituted so as to perform ordinary water sprinkling operation for sending out water of a water sprinkling tank 2 to a water sprinkling pipe 4 and filter cleaning operation for returning the water of the water sprinkling tank 2 to the filter 6 by switching first and second directional control valves 8 and 9, and can eliminate the mesh-clogging of the filter by flowing the water of the water sprinkling tank 2 toward the outside of the filter 6 from a filter inside chamber 6A by performing the filter cleaning operation by switching the first and second directional control valves 8 and 9 when the filter 6 causes the mesh-clogging in the ordinary water sprinkling operation. COPYRIGHT: (C)2003,JPO

5. 发明专利

JP2003239217A WATER SPRINKLING DEVICE OF ROLLING VEHICLE 审中-公开
公开(公告)号：JP2003239217A
公开(公告)日：2003-08-27
申请号：JP2002036089
申请日：2002-02-14
申请人： HOWA MACHINERY LTD
发明人： MATSUNAMI KATSUOMI , TOMITA MASATOSHI
IPC分类号： E01C19/23
摘要： PROBLEM TO BE SOLVED: To provide a water sprinkling device of a rolling vehicle generating no cause retarding works of a rolling vehicle even if the rolling works take time. SOLUTION: A plurality of filters 6a, 6b are parallelly provided in the midway of pipes 10a connecting a water sprinkling tank 2 and a water sprinkling pump 3, and water in the sprinkling tank 2 is fed to a sprinkling nozzle 5 through either one of filters 6a, (6b) by a changeover valve 7. Hence, when one of filters 6a, (6b) is clogged with something during the rolling work, the changeover valve is operated and the rolling work can be successively carried out through the other filter 6a, (6b). Accordingly, it is not necessary to suspend the work of the rolling vehicle for cleaning of the filter 6a, (6b). COPYRIGHT: (C)2003,JPO

6. 发明专利

JP2003239144A COTTON FEEDING DEVICE 审中-公开
公开(公告)号：JP2003239144A
公开(公告)日：2003-08-27
申请号：JP2002031828
申请日：2002-02-08
申请人： HOWA MACHINERY LTD
发明人： HIRAI HARUMI , KATO SHINJI
IPC分类号： D01G13/00 , D01G9/18 , D01G15/40 , D01G23/08
摘要： PROBLEM TO BE SOLVED: To provide a cotton feeding device capable of mixing cotton materials fed from two or more bale opening devices so as to feed the materials into one carding machine. SOLUTION: In this cotton feeding machine having two or more bale opening devices 30, the cotton materials are each scraped from bales P by using cotton scraping units 32 in the bale opening devices 30, then the scraped cotton materials are fed into one cotton material mixing device 10 by pneumatic transportation. The mixed cotton materials mixed by the cotton material mixing device 10 are further transported and fed into one shoot feeder 2 of the carding machine 1. Thus, two or more kinds of the cotton materials are mixed, so that a carded material satisfying a wide variety of user's requirement is formed. Further, the device is suitable for producing small amounts of the materials in a wide variety of their kinds, because a set-up unit of the material corresponds to one unit of the carding machine. COPYRIGHT: (C)2003,JPO

7. 发明专利

JP2003194217A SWITCHING VALVE AND HYDRAULIC CIRCUIT OF HYDRAULIC ALLY DRIVEN VEHICLE 审中-公开
公开(公告)号：JP2003194217A
公开(公告)日：2003-07-09
申请号：JP2001392979
申请日：2001-12-26
申请人： HOWA MACHINERY LTD
发明人： KATO HARUYUKI
IPC分类号： B60K17/356 , F16H61/40 , F16H61/44 , F16K17/34
摘要： PROBLEM TO BE SOLVED: To provide a switching valve which is switchable according to the flow rate of a hydraulic circuit, and a hydraulic circuit of hydraulic ally driven vehicle which is improved in operability by the switching valve. SOLUTION: A valve element 47 of the switching valve 40 which is connected to either suction ports 8, 23 and 24 or discharge ports 10, 25 and 26 of hydraulic motors 7, 13 and 14 which are in parallel in each other is provided with throttled path 49 and a second throttled path 50. When differential pressure generated by the flow rate of pressurized fluid exceeds set pressure in front of or behind the throttled path 49 and the second throttled path 50, the valve element 47 which stands in the middle position moves towards valve seats 51 which are installed in front of or behind the valve body 47 and blocks the throttled path 49. Thus, a flow rate of pressurized fluid through hydraulic motors 7, 13 and 14 can be limited in accordance with the flow rate of the second throttled path 50. COPYRIGHT: (C)2003,JPO

8. 发明专利

JP2003139104A FLUID PRESSURE CIRCUIT FOR TRAVELING VEHICLE 审中-公开
公开(公告)号：JP2003139104A
公开(公告)日：2003-05-14
申请号：JP2001338007
申请日：2001-11-02
申请人： HOWA MACHINERY LTD
发明人： MATSUNAMI KATSUOMI , TOMITA MASATOSHI
IPC分类号： E02F9/22 , F15B11/02 , F15B11/16
摘要： PROBLEM TO BE SOLVED: To provide a fluid pressure circuit for a traveling vehicle capable of preventing a cam jump under which a piston roller separates from a cam ring and hits the cam ring when the traveling vehicle turns. SOLUTION: A charge circuit 41 is connected to a series connection circuit 14 connecting between a left and a right fluid pressure motor 12, 13 under a condition that the left and the light fluid pressure motor 12, 13 driving a left and a right turning pressure wheel 10, 11 respectively are connected to a fluid pressure pump 2 in series. The charge circuit 41 has a check valve 42 therein and is connected to a charge pump 47. If flow-in rate of the fluid pressure motor of a outer wheel side reduces as compared to rotating speed in turning, the check valve 42 is released due to pressure drop in the series connection circuit 14, charge fluid from the charge pump 47 is supplied to the fluid pressure motor of the outer wheel side to prevent cam jump due to reduction of flow rate.

9. 发明专利

JP2003089932A FLUFF-PREVENTING DEVICE IN FINE SPINNING FRAME 审中-公开
公开(公告)号：JP2003089932A
公开(公告)日：2003-03-28
申请号：JP2001282915
申请日：2001-09-18
申请人： HOWA MACHINERY LTD
发明人： SATO TERUHIKO , ITO SHUNJI
IPC分类号： D01H7/90
摘要： PROBLEM TO BE SOLVED: To prevent yarn breakage by suppressing the increase of the yarn tension in the proximity of full bobbin in a fluff-preventing device having a false-twisting rotary rotor at the vicinity of a front roller. SOLUTION: When a bobbin is in the proximity of the full bobbin, the angle formed by a finely spun yarn Y from the rotary rotor 45 and the horizontal becomes smaller when the yarn Y passes a lappet 6, and the yarn tension is increased by the gradual increase of a resistance for passing the position between the rotary rotor 45 and the lappet 5. But when the yarn tension exceeds a previously set prescribed value, a compression spring 61 is compressed through the rotary rotor 45 and a swingable member 40, and the swingable member 40 is swung upward. As a result, the position of the rotary rotor 45 is swung from the position S1 to the upper position S2, and the angle (θ3) formed by the finely spun yarn Y from the rotary rotor 45 and the horizontal at the lappet 6 part becomes larger compared to that (θ1) in the entirely not swung state of the swinging member 40 to reduce the yarn tension of the finely spun yarn Y and to reduce the yarn break at the proximity of the full bobbin.

10. 发明专利

JP2003039213A Mechanism for switching coolant and air blow in tool clamp in portion 有权
标题翻译：用于在工具夹中切换冷却剂和空气吹扫的机构
公开(公告)号：JP2003039213A
公开(公告)日：2003-02-12
申请号：JP2001225320
申请日：2001-07-26
申请人： Okuma & Howa Machinery Ltd , 大隈豊和機械株式会社
发明人： MORI KENJIRO
IPC分类号： B23B31/00 , B23B31/117
摘要： PROBLEM TO BE SOLVED: To set up an air flow passage as an annex to a coolant flow passage for cleaning the periphery of a collet arranged in the shape of a ring and a tapered hole of a main shaft.
SOLUTION: This mechanism is provided with a member for opening and closing the coolant flow passage forced to open the coolant flow passage when a draw bar is pulled up, and forced to close the coolant flow passage when a tool holder is inserted at the tip of the draw bar, and moreover, a member for opening and closing the air flow passage forced to open a flow passage for ejecting air cylindrically from the clearance of the collet from the outer peripheral portion of the tip in the draw bar toward the tapered hole by pushing down the draw bar, and by inserting the tool holder while the collet is open when the coolant flow passage is closed, and forced to close the air flow passage by interlocking with pulling-up when the tool holder is fittingly fixed by pulling up the draw bar at the outer peripheral portion of the tip in the draw bar, in the mechanism capable of fittingly fixing the tool holder on the main shaft via the collet by pulling up the draw bar inserted through the bore in the main shaft and used to supply the coolant from a draw bar to a center bore in the tool holder in the machining center.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：设置作为冷却剂流路的附件的空气流动通道，用于清洁以环形和锥形孔的锥形孔布置的夹头的周边。解决方案：该机构设置有用于打开和关闭当牵引杆被拉起时强制打开冷却剂流动通道的冷却剂流动通道的构件，并且当工具架插入到尖端时被迫关闭冷却剂流动通道拉杆，此外，用于打开和关闭空气流动通道的构件被迫打开用于将夹头的间隙从拉杆的尖端的外周部分朝向锥形孔向圆锥孔从圆筒形排出空气的流动通道在冷却液流路闭合的同时，在夹头打开的状态下插入工具架，在通过向上拉动工具夹配合固定时，通过与上拉的联动而使空气流路闭合拉杆在牵引杆的尖端的外周部分，在机构中，能够通过拉动插入通过孔的拉杆将夹具通过夹头适当地固定在主轴上主轴，用于将冷却液从拉杆提供给加工中心的刀架中的中心孔。

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