Nippei Toyama Corporation

Toyama Machine Works, Ltd.

Hisao Sasaki

Tsutomu Sugihara

Kazuoki Sakai

Shiro Murai

Akira Takase

Yoshiharu Oyabe

Teruhiro Nishizaki

Yukio Kawasaki

Toshio Yasoshima

Kenichiro Morita

Shigetaka Tanii

Masayuki Sato

A main spindle apparatus has a main spindle having a through hole, a main spindle head rotatably supporting the main spindle therein, a tool holder clamp unit including an unit main body having a tool mounting hole to which a tool holder is mounted, a clamp mechanism for clamping the tool holder and a bias mechanism for biasing the clamp mechanism in a clamping state and a clamp release mechanism provided on the main spindle head side and releasing the clamping state of the clamp mechanism by operating the bias mechanism, wherein the tool holder clamp unit is mounted on the though hole of the main spindle so that the tool holder clamp unit is detachable from front side of the main spindle.

Main spindle apparatus and tool holder clamp unit used therefor

In a state of separating a front end face of an air injecting nozzlefrom a worked work W by a predetermined interval h, the air injecting nozzleis moved at a constant speed in an X axis direction, injects air from an injecting holeof a nozzle main bodyand is moved to pass centers OOof worked holes Wb, Wc of the work W. A variation in a pressure is measured by a pressure measuring unitX axis coordinates of the centers OOof the holes Wb, Wc, a hole diameter E and a center interval distance Dare calculated based on coordinates of center points TTof inclined portions Ld, Lu of a curve Lx of the pressure relative to the measured X axis coordinate.

Surface shape determining device for a machining apparatus and surface shape determining method

A taper correcting apparatus for a grinding machine comprises: workpiece supporting means for supporting a workpiece in parallel with a grinding wheel spindle; a cutting and feeding device which moves back and forth a cylindrical grinding wheel with respect to said workpiece; a wheel slide which is attached to a bed so as to be movable back and forth with respect to said workpiece; a pair of grinding wheel bearing pedestals which rotatably support ends of said grinding wheel spindle via bearings with respect to said wheel slide, respectively; a first grinding wheel bearing pedestal support which is fixed to said wheel slide, and which clampingly supports one of said grinding wheel bearing pedestals; a second grinding wheel bearing pedestal support which is attached so as to be rotatable about a round shaft, and which clampingly supports another one of said grinding wheel bearing pedestals, said round shaft being attached below said grinding wheel spindle to said wheel slide in parallel with the center line of said workpiece; a pressurring device which presses said second grinding wheel bearing pedestal support to rotate said second grinding wheel bearing pedestal support about said round shaft, thereby changing a distance between a center of said grinding wheel spindle and a center of said workpiece; and controlling means for controlling a pressing amount of said pressurring device, so that parallelism between a center line of said workpiece and a center line of said grinding wheel spindle is corrected.

Method of correcting a taper in a grinding machine, and apparatus for

In the tool change device, a tool change arm 27 for changing a tool 25 with respect to a main spindle 24, a main tool magazine 29 including a plurality of hold grooves 30 arranged linearly for holding the tools 25, and a tool storage member 41 including at least one storage portion 46 for storing the tool 25 are arranged in the back-and-forth direction of the tool change device. In order that the tools 25 can be delivered between the tool change arm 27 and main tool magazine 29, between the main tool magazine 29 and tool storage member 41, and between the tool storage member 41 and tool change arm 27, a single tool loader L is disposed in such a manner that it can be moved in correspondence to the tool change arm 27, main tool magazine 29 and tool storage member 41.

Tool change device and tool change method

Tool change device

A mechanism for driving a robot hand mounted on a robot arm includes a pair of planetary gear assemblies coupled to motors for swinging the robot hand about a first shaft and for rotating the robot hand about a second shaft through transmission systems. During swinging motion of the robot hand about the first shaft, rotative power from the motor which causes such rotation is transmitted by the planetary gear assemblies to the second shaft also, so that rotation of the robot hand resulting from the swinging motion of the robot hand can be cancelled out.

Robot hand driving mechanism

Growing community of inventors

Toyama, Japan

Hisao Sasaki