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| Number | Title | Issue Date |
| 7402006 | Manufacturing method of gear device This method includes: a supporting process of supporting a worm wheel in a first supporting section of a supporting body; an engaging process of engaging a jig gear which corresponds to a worm with the worm wheel; a measuring process of measuring a distance between ... | 07/22/2008 |
| 7400141 | Magnetic type angle sensor A magnetic type angle sensor includes a rotary body having a first sensed part provided on a circumferential surface thereof with projecting parts and recessed parts at equal intervals in a circumferential direction thereof and a second sensed part provided on a cir... | 07/15/2008 |
| 7266870 | Mandrel device for machine tool A mandrel device includes a spindle for rotatably attaching to a machine tool, a rotating device for selectively rotating the spindle, and a driving device for selectively driving the spindle in different speed or different torque when the rotating device do not rot... | 09/11/2007 |
| 7025542 | Guide device for workpiece machining head, machine having the same, and guide method There is provided a guide device for a machining head capable of machining a workpiece such as a cylinder head of an engine accurately, a machine having the guide device, and a guide method. At least one of guide posts formed in a guide post member has an air pressu... | 04/11/2006 |
| 7001554 | Synthetic fiber filled erosion control blanket A durable erosion control blanket featuring a novel synthetic fiber filler is disclosed. The erosion control blanket of the present invention addresses the need for a particularly resilient erosion control blanket through the use of a post-consumer, crimped, polyest... | 02/21/2006 |
| 6739943 | Machining the teeth of double sided face gears On account of the constructional form of the tool head (17) according to the invention, the opposite sides (18, 19) of a tool (13) attached to the tool spindle (14) of a numerically controlled continuously generating gear grinding or hobb... | 05/25/2004 |
| 6450740 | Mechanical gear hob with stock divide by differential gear box A mechanical gear hob is equipped with an automatic stock divide device that enables the hob to cut or re-cut gear parts that already have teeth in them by automatically synchronizing the gear teeth to the hob cutter. The hob is equipped with a hob shift ... | 09/17/2002 |
| 5037252 | Multi-spindle synchronous drive unit and gear cutting machine employing the same A multi-spindle synchronous drive unit for synchronously driving a plurality of spindles, includes a plurality of motors for respectively driving the spindles, a plurality of encoders for respectively detecting rotational positions of the motors, a plural... | 08/06/1991 |
| 4822217 | Assemblage of components for the drive system of the worktable in an automatic gear cutting machine Problems connected with control of the worktable in automatic gear cutting machinery are overcome by adoption of a drive system incorporating two speed reductions, the first of which a worm and wheel, the second consisting in a cylindrical gear pair with ... | 04/18/1989 |
| 4712048 | Process and apparatus for controlling the spindle speed of a gear cutting machine A tool spindle is driven by a motor and is connected to an angle of rotation transmitter. The signal of the transmitter connected to the tool spindle represents the desired value for the drive of a work piece spindle. The angle of rotation of the workpiec... | 12/08/1987 |
| 4708544 | Machine tool controller The method is used for measuring and/or controlling the position of a rotating reference element of a machine tool as a function of the position of a rotating main guide element. The two elements execute a basic movement with a transmission ratio which is... | 11/24/1987 |
| 4663721 | Gear cutter A method and control system for gear cutting machines such as hobbing equipment, shaper cutters and bevel-cutting equipment for achieving greater accuracy, productivity, and gears of increased quality while eliminating error, tedious calculations, labor a... | 05/05/1987 |
| 4631869 | Automatic workpiece engaging apparatus in grinding machines An apparatus for automatically causing a workpiece to engage a rotary tool. A pulse signal generated by rotating a reference workpiece is stored, and then a pulse signal generated by rotating a mounted workpiece is counted. The counted pulse signal and th... | 12/30/1986 |
| 4585377 | Numerical-controlled machine tool The present invention has for its object to make it possible to stop the relative movement of a cutter and a gear blank or change its speed during cutting in a numerical-controlled machine tool for cutting a gear, such as a gear hobbing machine, a gear gr... | 04/29/1986 |
| 4561216 | Workpiece engaging apparatus in grinding machines An apparatus for bringing a rotary grinding tool into mesh with a workpiece while minimizing a grinding resistance by the workpiece when the workpiece is to be ground by the rotary grinding tool. An electric power detector is associated with the rotary to... | 12/31/1985 |
| 4555871 | Method and apparatus for eliminating undulation errors on gear-tooth flanks in production gear-fabricating machines In order to eliminate undulation errors in gear production wherein a generating motion of a gear-tooth flank of a gear fixed to a rotary table corresponding to an involute profile is induced by simultaneously imparting a predetermined rotary motion and a ... | 12/03/1985 |
| 4329096 | Gear cutter A method and control system for gear cutting machines such as hobbing equipment, shaper cutters and bevel-cutting equipment for achieving greater accuracy, productivity, and gears of increased quality while eliminating error, tedious calculations, labor a... | 05/11/1982 |
| 4253050 | Method and apparatus for the synchronization of a gear machining apparatus This invention concerns a method for the synchronization of a gear machining instrument that works according to the hobbing method. It has different drives for the tool and the work-piece. In the process, a series of pulses are produced, dependent upon th... | 02/24/1981 |
| 4245938 | Device for positioning a tool carriage A device for controlling and positioning a carriage in a tool machine, in particular the feed carriage on a gear hobbing machine. The device utilizes cams oriented one after the other and which operate a plurality of switches to control the advance of the... | 01/20/1981 |
| 4208155 | Gear cutting machine with a hob Gear cutting apparatus comprises a hob 9 carried by a radial slide 1 and an axial slide 16, which are moved by independent d.c. motors 20 and 17. A main variable-speed motor 2 on the radial slide 1 is kinematically connected to the hob 9 and to a turntabl... | 06/17/1980 |
| 4178537 | System for the production of an additional rotational motion of a helically toothed gear workpiece in a positively controlled gear processing machine The present invention relates to a method and apparatus for the production of an additional rotational motion of a helically toothed gear workpiece in an electronically, positively controlled gear processing machine operating according to the hobbing meth... | 12/11/1979 |
