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41. 发明专利

JPH0373273A ROTATING GRINDSTONE 失效
公开(公告)号：JPH0373273A
公开(公告)日：1991-03-28
申请号：JP20522689
申请日：1989-08-08
申请人： TOYODA MACHINE WORKS LTD
发明人： IMAI TOMOYASU , FUKAMI HAJIME , MUKAI RYOHEI
IPC分类号： B24D5/12
摘要： PURPOSE:To shorten the manufacturing time of a grindstone and to prolong the service life thereof by forming a grindstone layer with the bonding of abrasive gains by a powder metallurgical method on the outer peripheral end face of a grindstone based metal and forming an abrasive grain layer of a monolayer by an electrodeposition on both side faces of this grindstone layer. CONSTITUTION:In the case of forming a grindstone layer 6 of the outer peripheral end face of a grindstone base metal 2 by a powder metallurgical method, the quantity of super abrasive grains 4, 4' contained in the unit volume of the grindstone layer 6, i.e., the concentricity is freely adjusted to adapt for the quality of the material to be cut. Moreover, a mono-abrasive grain layer 7 is formed on both side faces of this grindstone layer 6 to allow to participate in cutting directly. A rotating grindstone 1 of good sharpness and yet long life can be obtained together with an autogenous edging action by the soft metal bonding material of the grindstone layer 6.

42. 发明专利

JPH02311269A ELECTRODEPOSITION GRINDING STONE 失效
公开(公告)号：JPH02311269A
公开(公告)日：1990-12-26
申请号：JP13248689
申请日：1989-05-25
申请人： TOYODA MACHINE WORKS LTD
发明人： IMAI TOMOYASU , KITAJIMA MASATO , FUKAMI HAJIME
IPC分类号： B24D3/00 , B24D3/06
摘要： PURPOSE:To hamper burying of a grinding grain, and to improve cooling effect by forming a grinding grain layer out of a small grain body that is distributed and retained in a matrix, and whose grain size is smaller than that of the grinding grain composed of the same material as the grinding grain, and of a grinding grain that is distributed and retained, being in contact with small grain bodies, in a matrix on the upper surface side of the small grain body. CONSTITUTION:When an electrodeposition grinding stone is used to grind an object to be ground, at the time of grinding, the pressure works on a grinding grain 33, at first works on a matrix 31 by which the grinding grain 33 is held, and finally works on a substrate 1. As the matrix 31 is formed of a hard nickel, movement of the grinding grain 33 in the matrix 31 is small. In the matrix 31 between the grinding grain 33 and the substrate 1, a diamond harder than nickel, or a small grain body 32 composed of cubic system boron nitride, which is harder than the matrix alone of the nickel between the grinding grain 33 and the substrate 1. The grinding grain on which grinding force works is held in the small grain body 32, and the pressure is distributed.

43. 发明专利

JPH02237768A CORRECTION DEVICE FOR GRINDSTONE 失效
公开(公告)号：JPH02237768A
公开(公告)日：1990-09-20
申请号：JP5734689
申请日：1989-03-09
申请人： TOYODA MACHINE WORKS LTD
发明人： IMAI TOMOYASU , MUKAI RYOHEI , TSUTSUI TOSHIHIRO
IPC分类号： B24B53/00 , B24B53/095
摘要： PURPOSE:To elongate a truing interval and to constrain the wear of a grindstone wheel by arranging a coolant feeding device for crushing abrasive grains while feeding a coolant to the grindstone wheel just after a dressing roll in the rotation direction of the grindstone wheel. CONSTITUTION:In the case of the surface of a grindstone wheel 12 being subjected to a flattening treatment, the grindstone wheel is subjected to truing at constant intervals by a truer. Moreover, the grindstone wheel is subjected to dressing by a dressing roll 31 at truing intervals, a binder connecting abrasive grains is ground and a chip packet is formed. A coolant is fed to the grindstone wheel 12 by the nozzle 4 of a coolant feeding device just after this dressing roll 31, the surfaces of the abrasive grains projected from the surface of the grindstone wheel 12 heated by dressing are rapidly cooled and finely crushed to cause sharp notches on the abrasive grains surfaces, and the grindability is improved.

44. 发明专利

JPH0224062A ELECTRODEPOSITED GRINDSTONE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH0224062A
公开(公告)日：1990-01-26
申请号：JP17389688
申请日：1988-07-14
申请人： TOYODA MACHINE WORKS LTD
发明人： IMAI TOMOYASU , MUKAI RYOHEI , SOMA SHINJI
IPC分类号： B24D3/00 , B24D3/06
摘要： PURPOSE:To increase the joining force of abrasive grains onto a grindstone core by allowing the glass powder or ceramics powder to adhere onto the surfaces of the abrasive grains and forming a covered layer on an uneven surface by melting the powder and fixing the abrasive grains onto the grindstone core through the electrical plating. CONSTITUTION:Glass powder or ceramics powder is allowed to adhere onto the surfaces of abrasive grains 3, and a coated layer 12 having an uneven surface is formed by melting the glass powder or ceramics powder. A grindstone core 1 and a plating rod are introduced as electrodes into a plating liquid, and the plating liquid is stirred, allowing the coated abrasive grains to dispersion-sink by revolving the grindstone core 1, and a DC is allowed to flow between the both electrodes. Therefore, a plated layer 4 is formed on the surface of the grindstone core 1, and the coated abrasive grains are caught onto the plated layer 4 and partially embedded, and firmly joined with the grindstone core 1 mechanically.

45. 发明专利

JPS63150160A METHOD AND DEVICE FOR CORRECTING PERIPHERAL SURFACE OF GRINDING WHEEL 失效
公开(公告)号：JPS63150160A
公开(公告)日：1988-06-22
申请号：JP29662286
申请日：1986-12-15
申请人： TOYODA MACHINE WORKS LTD
发明人： IMAI TOMOYASU , YAMADA RYOJI , KATSUTA MAMORU
IPC分类号： B24B53/00 , B24B53/047
摘要： PURPOSE:To carry out a dressing process without any damage on the peripheral surface of a grinding area, by subjecting a dresser, at first to plunge feed toward the non- grinding area of the peripheral surface of a grinding wheel and to traverse feed after the dresser makes contact with the non-grinding area, and forcing the dresser to continue its cut-in process until it comes in contact with the peripheral surface of the grinding area. CONSTITUTION:A dresser 3 is forced at first to face the peripheral surface (b range) of the non-grinding area 8 out of peripheral surface 4 of a grinding wheel 2, then subjected to plunge feed until it comes in contact with said non-grinding area 8. When this contact is detected by a vibration detecting sensor 9, a numerical control unit drives both a longitudial feeding unit 10 and a traverse feeding unit 11 via driving circuits so as to subject the dresser 3 to traverse feed to make cut-in process step by step. Then, when it is detected, by the vibration detecting sensor 9, that the dresser has arrived at the peripheral surface (a range) of a grinding area 7, the dresser 3 is subjected to traverse feed preset times to make cut-in process so that correction on the peripheral surface 4 of the grinding wheel may be completed. Thus, it is possible to carry out correction on the peripheral surface of the grinding wheel efficiently and in a short time.

46. 发明专利

JPS6312747B2 失效
公开(公告)号：JPS6312747B2
公开(公告)日：1988-03-22
申请号：JP10377486
申请日：1986-05-08
申请人： TOYODA MACHINE WORKS LTD
发明人： SUZUKI IKUO , IMAI TOMOYASU , KITAJIMA MASATO
IPC分类号： B24B53/00 , B24B53/053 , B24B53/14 , B24D3/00

47. 发明专利

JPS62282868A TRUING METHOD FOR GRINDSTONE 失效
公开(公告)号：JPS62282868A
公开(公告)日：1987-12-08
申请号：JP12097986
申请日：1986-05-28
申请人： TOYODA MACHINE WORKS LTD
发明人： IMAI TOMOYASU , MUKAI RYOHEI , TSUTSUI TOSHIHIRO
IPC分类号： B24B53/00
摘要： PURPOSE:To get rid of any deflection as well as to form it into such a stone surface that is excellent sharpness, by setting the extent of truing frequency for a grindstone, while making a feed pitch of a truer per rotation smaller other than the last time and the feed pitch of the truer per rotation larger at the last one time alone. CONSTITUTION:Traverse frequency (n) (truing frequency) of a truer 22 is set up by an input unit 41, and it is stored in a memory 33. Next, the truer 22 is rotated at high speed, making it go forward in rapid traverse to a grindstone 12, and further infeed is given to the stone, whereby truing takes place with the set traverse frequency n-1. With this, since a truing quantity per reciprocation of a traverse 1 is much enough, deflection of the grindstone is removed. In succession, a revolving speed of the truer 22 is controlled to be low speed, giving infeed to it, the last one time traverse is carried out. With this constitution, since a feed pitch of the truer in the traverse direction per rotation is large enough, such a stone surface that is excellent in sharpness is formed.

48. 发明专利

JPS62148157A TOOLING DEVICE FOR SUPER ABRASIVE GRAIN GRINDSTONE WHEEL 失效
公开(公告)号：JPS62148157A
公开(公告)日：1987-07-02
申请号：JP28468285
申请日：1985-12-18
申请人： TOYODA MACHINE WORKS LTD
发明人： IMAI TOMOYASU , MUKAI RYOHEI , TSUTSUI TOSHIHIRO
IPC分类号： B24B53/00 , B24B53/053
摘要： PURPOSE:To maintain the quality of a tooling tool, by providing a sharpening device which brings a sharpening tool into contact with the peripheral surface of the tooling tool. CONSTITUTION:A tooler table 12 is equipped with a sharpening device 30 in a slidable manner in the P direction crossing the tooler shaft. Here, at every time when a tooling on a super abrasive grain grindstone wheel 16 is performed by means of a tooling tool or after several times of tooling is performed, the peripheral surface 21a of the tooling tool 21 is sharpened such as by driving the tooling tool 21 rotatingly, then feeding the sharpening device 30 in the P direction, and putting a sharpening tool 32 into contact with the peripheral surface 21a of the tooling tool 21. As a result, sharpeness of the tooling tool 21 can be well maintained while as the super abrasive grain grindstone wheel 16 to be subjected to tooling has a low grinding resistance and thus can be well tooled, generation of burning on the grinded surface of a workpiece due to grinding can be prevented.

49. 发明专利

JPS61152356A GRINDING METHOD FOR CYLINDRICAL OR CONICAL SURFACE 失效
公开(公告)号：JPS61152356A
公开(公告)日：1986-07-11
申请号：JP28133684
申请日：1984-12-26
申请人： TOYODA MACHINE WORKS LTD
发明人： IWAMI MASAO , IMAI TOMOYASU , YAMADA RYOJI
IPC分类号： B24B5/00 , B24B5/14
摘要： PURPOSE:To unify the extent of the wear of a grinding wheel by constituting a system where the circular edge of a cup-shape grinding wheel is used as a grinding plane and this plane and a workpiece are so positioned as to permit its grinding throughout the plane. CONSTITUTION:A workpiece W is fixed to the main spindle 35 of a head stock 31 via a chuck 36, and so rotated that the processing surface Wa of the workpiece W will be ground in contact with the circular grinding plane 21a of a cup-shape grinding wheel 21 rotatable as fitted to a grinding wheel head 14. And the said head stock 31 is made to move in a Y-direction and the grinding wheel head 14 in an X-direction and a Z-direction as perpendicular to this paper. In this instance, the position of the grinding wheel head 14 in an X-direction and that of the head stock 31 in a Y-direction are so controlled that the length Wb of the workpiece W will agree to the length of a segment V on the grinding plane 21a, and the grinding wheel head 14 is moved in a Z-direction for so positioning the workpiece W that its length Wb will be in contact with the fill width of the said grinding plane 21a.

50. 发明专利

JPS5351593A METHOD OF GRINDING CAM 失效
公开(公告)号：JPS5351593A
公开(公告)日：1978-05-11
申请号：JP12764776
申请日：1976-10-22
申请人： TOYODA MACHINE WORKS LTD
发明人： SUZUKI IKUO , IMAI TOMOYASU , KITAJIMA MASATO , YASUDA KAZUNORI
IPC分类号： B24B19/12
摘要： PURPOSE:To heighten the grinding precision of a long cylindrical workpiece having notches such as key grooves on the periphery, by the employment of a coreless grinding method which effects two-stepped cutting.

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