Abstract: A tool damage detection device which detects the presence or absence of damage, has a contact bar rotatably supported on a casing; a pneumatically operated air drive device operatively connected with a supply of air under pressure; and a linear-to-rotational motion conversion device operatively interconnects the contact bar and the direct-air drive device. A resilient member is interposed between the contact bar and the conversion device.

Abstract: In an air-type shock absorber, a piston is sealing situated in a cylinder chamber. A vacuum state occurs in a piston bearing side of the cylinder chamber when a piston is pushed. Also, an air reservoir is provided at a side opposite to the piston bearing to have a sealed structure, so that a force of absorbing a shock can be increased to have the same effect as in an oil-type shock absorber. The shock absorber can be used not only at a place requiring cleanness but also in adverse environment in which the shock absorber is exposed to water or coolant, and durability of the shock absorber is also improved.

Abstract: In an air-type shock absorber, a piston is sealing situated in a cylinder chamber. A vacuum state occurs in a piston bearing side of the cylinder chamber when a piston is pushed. Also, an air reservoir is provided at a side opposite to the piston bearing to have a sealed structure, so that a force of absorbing a shock can be increased to have the same effect as in an oil-type shock absorber. The shock absorber can be used not only at a place requiring cleanness but also in adverse environment in which the shock absorber is exposed to water or coolant, and durability of the shock absorber is also improved.

Abstract: A shock absorber is formed of a cylinder having a stopping surface, a piston slidably situated in the cylinder to be moved when it is pushed by a moving member, and a switching device attached to the cylinder to be actuated right before the piston abuts against the stopping surface of the cylinder. An electromagnetic valve is connected to the switching device. The electromagnetic valve has a first position, and a second position for allowing air in the cylinder to escape outwardly when the piston is moved and the electromagnetic valve is operated by the switching device. A spring cooperates with the piston to return the piston to a position before the switching device is operated when a pressing force applied to the piston is removed by retreat of the moving member after the switching device is actuated.

Abstract: A touch sensor of the invention includes an adjusting mechanism to adjust a position of the touch sensor relative to a processing machine. The touch sensor includes an arm attached to the processing machine, a housing attached to the arm and having a sensor section with a contact and a flange, a fastening device for fastening the housing to the arm, and an eccentrically rotating device including an eccentric axis having a first axis and a second axis eccentrically attached to the first axis. A circular hole is formed in one of the housing and the arm to engage the first axis, and an elongated slot is provided in the other of the housing and the arm to engage the second axis. Upon rotation of the eccentric axis, a position of the contact attached to the housing is adjusted relative to the arm or processing machine.

Abstract: In a moving apparatus of an arm for a tool edge sensor, the arm can be moved between a housing position which does not obstruct a processing work and a detecting position projected from the housing position. The apparatus is provided with a detecting sensor at a forward end of the arm, a moving device for moving the arm between the housing position and the detecting position, end a positioning device formed of at least six-point contacts arranged separately for three-dimensionally restricting the arm at the detecting position. When the arm is moved between the housing position and a position right before the detecting position, it is moved by the moving device, and at the detecting position of the arm, the arm is released from the moving device and positioned only by the positioning device. Since a positioning error due to the moving device at the time of positioning the detecting position does not occur, the arm can be positioned extremely accurately.

Abstract: A stopping device with a switch of the invention includes a bolt with a head portion, a control signal generating device situated in a bolt through hole of the bolt, and a sliding member. The sliding member includes a shaft slidably situated in the head through hole, a flange attached to the shaft and having a second stopping face facing a first stopping face of the head portion, and an end portion extending from the flange to contact an object to be detected. After the object contacts the end portion, until the second stopping face abuts against the first stopping face, the control signal generating device produces a control signal. A sealing device is installed between the head portion and the sliding member. Thus, dustproof and waterproof effects can be obtained.

Abstract: A stopping device with a switch is used for stopping an object to be detected, such as a table on which a work or material to be measured is mounted. The stopping device is basically formed of a housing; a first leaf spring disposed in the housing and fixed thereto at an outer portion; an actuating shaft with a stopping surface fixed to an inner portion of the first leaf spring to be movable inside the housing; a movable contact attached to the actuating shaft at a side opposite to the stopping surface; a second leaf spring disposed in the housing to face the first leaf spring and fixed to the housing at an outer portion thereof; and a fixed contact fixed to an inner portion of the second leaf spring and facing the movable contact with a space therebetween.

Abstract: A touch sensor of the invention can output a directional information from which direction an object to be measured touches a contact, as well as a positional information. The touch sensor includes a movable plate; at least four movable support points provided on the movable plate in a rectangular shape; a measuring shaft attached to the movable plate to extend perpendicularly thereto; and a base plate situated at a side facing the movable support points and having at least four fixed support portions corresponding to the respective support points. When no force is applied to the measuring shaft, all the support points and support portions contact together. When the object to be measured touches a contact portion, two of the support points situated adjacent to each other become temporary rotational supporting points, and two support points provided at a side opposite to the temporary rotational supporting points are separated from the support members corresponding thereto.

Abstract: A touch sensor of the invention can output a directional information from which direction an object to be measured touches a contact, as well as a positional information. The touch sensor includes a movable plate; at least four movable contacts provided on the movable plate and arranged in a rectangular shape; a measuring shaft attached to the movable plate to extend perpendicularly thereto and having a contact portion at one end thereof; a base plate situated at a side opposite to the movable contacts and having at least four fixed contacts formed at positions corresponding to the respective movable contacts so that the fixed contacts contact the corresponding movable contacts; a device for uring the movable plate to the base plate so that the movable contacts and the fixed contacts contact together; and insulating guides provided on the base plate or the movable plate to surround the movable and fixed contacts. The guides contact and guide the movable or fixed contacts.

Abstract: A control signal transmitting device is used for a control device, such as a position detecting device. The transmitting device includes a position detecting sensor, and a receiving device situated near the position detecting sensor. The position detecting sensor includes a sensing device, a radio wave transmitting device electrically connected to the sensing device, and a device for directing the radio wave in one direction. The radio wave transmitting device emits radio wave in a direction opposite the sensing device upon receiving a signal from the sensing device. The receiving device includes a radio wave receiving device disposed to face the radio wave transmitting device for receiving the radio wave transmitted from the transmitting device, and a shielding device for covering the receiving device to receive the radio wave from one direction.

Abstract: The shaft position sensor is provided with a movable body fixed to a measuring shaft. A first switching apparatus operating in a first measuring position and a second switching apparatus operating in a second measuring position are incorporated in the movable body. The first switching means and the second apparatuses are arranged in parallel with the measuring shaft.

Abstract: A touch sensor comprises a probe disposed on a rotatable shaft projecting from one side of a housing and adapted to rotate the shaft when an object to be detected is brought into contact therewith as well as a contact disposed in the housing and adapted to issue a trigger signal as it is turned on or off by the rotation of the shaft.