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1. 发明授权

US11471954B2 Tool clamping method of tool holder and the tool holder 有权
公开(公告)号：US11471954B2
公开(公告)日：2022-10-18
申请号：US16489794
申请日：2017-03-02
申请人： BIG DAISHOWA CO., LTD.
发明人： Joji Nakatani , Yasuyuki Ishida , Hidemori Kawashita , Yasuhiro Ishimoto
IPC分类号： B23B31/20 , B23B31/08 , B23Q3/06 , B23Q3/12
摘要： A tool holder (1) includes a clamping member (4) for clamping and holding a tool (5), a holder body (2) having, at a leading end thereof, a receiving portion (25) for receiving the clamping member (4) along an axis (AX) and an operational member (N) for attaching the clamping member (4) to the holder body (2). The clamping member (4) clamps the tool (5) by an operation of the operational member (N). Vibration is applied to a contact portion (T) between the clamping member (4) and the holder body (2) when the clamping member (4) clamps the tool (5).

2. 发明授权

US11255654B2 Misalignment determining device 有权
公开(公告)号：US11255654B2
公开(公告)日：2022-02-22
申请号：US17049192
申请日：2018-08-23
申请人： BIG DAISHOWA CO., LTD. , BIG DAISHOWA SEIKI CO., LTD.
发明人： Naoki Maegawa
IPC分类号： G01B5/25 , B23Q17/22 , B23Q3/12
摘要： Provided is a misalignment determining device having a size thereof in an axial direction being made short. The misalignment determining device includes a case, a dial gauge, a holder portion, a support portion, a pivotal portion, a lever member, and a slide member. The slide member is placed in contact with a stylus of the dial gauge. While the pivotal portion and the lever member are rotated in synchronism with rotation of the holder portion, a pivot amount of the pivotal portion is transmitted to the slide member via the lever member, and based on an amount of movement of the slide member along an axis direction, the dial gauge determines the pivot amount.

3. 发明申请

US20190381577A1 TOOL CLAMPING METHOD OF TOOL HOLDER AND THE TOOL HOLDER 审中-公开
公开(公告)号：US20190381577A1
公开(公告)日：2019-12-19
申请号：US16489794
申请日：2017-03-02
申请人： BIG DAISHOWA CO., LTD.
发明人： Joji NAKATANI , Yasuyuki ISHIDA , Hidemori KAWASHITA , Yasuhiro ISHIMOTO
IPC分类号： B23B31/20 , B23Q3/12 , B23B31/08 , B23Q3/06
摘要： A tool holder (1) includes a clamping member (4) for clamping and holding a tool (5), a holder body (2) having, at a leading end thereof, a receiving portion (25) for receiving the clamping member (4) along an axis (AX) and an operational member (N) for attaching the clamping member (4) to the holder body (2). The clamping member (4) clamps the tool (5) by an operation of the operational member (N). Vibration is applied to a contact portion (T) between the clamping member (4) and the holder body (2) when the clamping member (4) clamps the tool (5).

4. 发明申请

US20210254956A1 MISALIGNMENT DETERMINING DEVICE 有权
公开(公告)号：US20210254956A1
公开(公告)日：2021-08-19
申请号：US17049192
申请日：2018-08-23
申请人： BIG DAISHOWA CO., LTD. , BIG DAISHOWA SEIKI CO., LTD.
发明人： Naoki MAEGAWA
IPC分类号： G01B5/25 , B23Q17/22
摘要： Provided is a misalignment determining device having a size thereof in an axial direction being made short. The misalignment determining device includes a case, a dial gauge, a holder portion, a support portion, a pivotal portion, a lever member, and a slide member. The slide member is placed in contact with a stylus of the dial gauge. While the pivotal portion and the lever member are rotated in synchronism with rotation of the holder portion, a pivot amount of the pivotal portion is transmitted to the slide member via the lever member, and based on an amount of movement of the slide member along an axis direction, the dial gauge determines the pivot amount.

5. 发明申请

US20190113323A1 MISALIGNMENT DETERMINING DEVICE 审中-公开
公开(公告)号：US20190113323A1
公开(公告)日：2019-04-18
申请号：US16090437
申请日：2016-07-28
申请人： BIG DAISHOWA CO., LTD.
发明人： Naoki MAEGAWA , Hirotsune OZAKi
IPC分类号： G01B5/25 , B23Q3/18
摘要： The device includes a tubular case having a through hole that extends therethrough in an axial direction, a test indicator capable of determining a minute amount of change of distance by a stylus, a tubular holder body rotatably attached to the case through the through hole, a supporting body for supporting the holder body, a slidable body provided on a radial inner side of the holder body and movable relative to the holder body along the axial direction, and a pivotal body having a pivotable leading end portion whose pivotal amount is transmitted to the slidable body. The slidable body has an axial extension portion formed along the axial direction and a radial extension portion formed along the radial direction. The stylus and the radial extension portion are configured to come into contact with each other.

6. 发明授权

US10189137B2 Tool shape measuring apparatus 有权
公开(公告)号：US10189137B2
公开(公告)日：2019-01-29
申请号：US15569544
申请日：2015-06-30
申请人： BIG DAISHOWA CO., LTD.
发明人： Masataka Yauchi , Kouichi Uemura , Reina Oohashi , Shunsuke Kumasaki , Akihito Funashoku
IPC分类号： G01B11/00 , B23Q17/22 , B23Q17/24 , G01B11/28 , G01B11/24
摘要： There is provided a tool shape measuring apparatus that allows detection of shape abnormality in a tool having a plurality of cutting edges with a simple configuration. A light receiving section 6 includes a light receiving face 9 perpendicular to an optical axis 6b of a light receiving lens 6a. In the light receiving face 9, there are disposed a plurality of line sensors 8 arranged in different directions from each other, each line sensor having a plurality of sensor elements arranged in one direction. The line sensor 8 is disposed across a first area not reached by the irradiation light L as being completely blocked by the tool 4, a second area disposed adjacent the first area and reached by the irradiation light L with a portion thereof being blocked, and a third area disposed adjacent the second area and reached by the irradiation light L not blocked at all. A calculation section 21 checks change occurring in output states of the line sensor 8 associated with rotation of the tool 4 and specifies a contour position of the tool 4 based on a center position in the second area when the number of the sensor elements included in the second area becomes minimal.

7. 发明申请

US20210046600A1 SYSTEM FOR ADJUSTING BALANCE AND RUNOUT OF ROTARY TOOL, DEVICE FOR DETERMINING THE BALANCE AND RUNOUT, METHOD OF ADJUSTING THE BALANCE AND RUNOUT, AND TOOL HOLDER 有权
公开(公告)号：US20210046600A1
公开(公告)日：2021-02-18
申请号：US16976591
申请日：2018-03-02
申请人： BIG DAISHOWA CO., LTD. , BIG DAISHOWA SEIKI CO., LTD.
发明人： Masataka YAUCHI , Kouichi UEMURA , Yukio TSUJITA , Reina OOHASHI , Shunsuke KUMASAKI , Akihito FUNASHOKU
IPC分类号： B23Q11/00 , B23Q17/24 , B23Q17/22
摘要： A balance and runout amount adjustment system for a rotary tool includes a rotary tool constituted of a tool holder mounted on a spindle, a balance determining device configured to obtain outer circumference position data of the rotary tool and to determine a mass balance of the rotary tool based on the outer circumference position data obtained, in the course of rotation of the rotary tool and a runout determining device configured to obtain shape data of the rotary tool and to determine a runout amount of the rotary tool based on the shape data obtained, in the course of rotation of the rotary tool. The rotary tool is configured to be capable of adjustment of the mass balance based on the result of the determination made by the balance determining device and capable also of adjustment of the runout amount based on the result of the determination made by the runout determining device.

8. 发明申请

US20190118269A1 TOOL CHUCK, TOOL HOLDING METHOD AND TOOL REMOVING METHOD 审中-公开
公开(公告)号：US20190118269A1
公开(公告)日：2019-04-25
申请号：US16087842
申请日：2016-09-06
申请人： BIG DAISHOWA CO., LTD.
发明人： Joji NAKATANI , Hirokazu SURUGA
IPC分类号： B23B31/20
摘要： Provided is a tool chuck that allows precision gripping of a tool by a collet when this collet is pushed into a chuck body.The tool chuck includes a collet for gripping a tool, a chuck body having, at a leading end thereof, a receiving portion for receiving the collet inserted therein along an axis thereof, a holder containing the collet therein and configured to be movable together with the collet along an axial direction based on the axis, and a nut fitted on the chuck body in a radial direction based the axis and containing the holder in the radial direction. The holder has a movement allowing mechanism for allowing the holder to move relative to the nut along the axial direction when the nut is moved relative to the chuck body along the axial direction.

9. 发明申请

US20180297166A1 TOOL SHAPE MEASURING APPARATUS 审中-公开
公开(公告)号：US20180297166A1
公开(公告)日：2018-10-18
申请号：US15569544
申请日：2015-06-30
申请人： BIG DAISHOWA CO., LTD.
发明人： Masataka Yauchi , Kouichi UEMURA , Reina OOHASHI , Shunsuke KUMASAKI , Akihito FUNASHOKU
IPC分类号： B23Q17/24 , G01B11/24 , G01B11/28 , G01B11/00
CPC分类号： B23Q17/2457 , B23Q17/22 , B23Q17/24 , B23Q17/2485 , G01B11/00 , G01B11/002 , G01B11/24 , G01B11/2433 , G01B11/28
摘要： There is provided a tool shape measuring apparatus that allows detection of shape abnormality in a tool having a plurality of cutting edges with a simple configuration. A light receiving section 6 includes a light receiving face 9 perpendicular to an optical axis 6b of a light receiving lens 6a. In the light receiving face 9, there are disposed a plurality of line sensors 8 arranged in different directions from each other, each line sensor having a plurality of sensor elements arranged in one direction. The line sensor 8 is disposed across a first area not reached by the irradiation light L as being completely blocked by the tool 4, a second area disposed adjacent the first area and reached by the irradiation light L with a portion thereof being blocked, and a third area disposed adjacent the second area and reached by the irradiation light L not blocked at all. A calculation section 21 checks change occurring in output states of the line sensor 8 associated with rotation of the tool 4 and specifies a contour position of the tool 4 based on a center position in the second area when the number of the sensor elements included in the second area becomes minimal.

10. 发明申请

US20220331885A1 HYDRO CHUCK 有权
公开(公告)号：US20220331885A1
公开(公告)日：2022-10-20
申请号：US17761790
申请日：2019-09-20
申请人： BIG DAISHOWA CO., LTD. , BIG DAISHOWA SEIKI CO., LTD
发明人： Masayuki DOI
IPC分类号： B23B31/30
摘要： A hydro chuck includes a shank portion provided on one end side in a longitudinal direction and having, on a leading end side thereof, a cylindrical chuck portion for gripping a gripped object and an operational portion provided on the other end side in the longitudinal direction and disposed in continuation from the shank portion. The shank portion is fixable by being inserted to a tool mount included in a machine tool. The chuck portion includes a sleeve gripping the gripped object and a fluid pressure chamber formed on an outer circumference side of the sleeve and filled with fluid, the chuck portion being configured such that in association with a rise of a pressure of the fluid inside the fluid pressure chamber, the sleeve is reduced in its diameter to grip the gripped object. The operational portion includes a communication passage communicated to the fluid pressure chamber and a pressurizing piston disposed in the communication passage and adjusting the pressure of the fluid inside the fluid pressure chamber.

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