Abstract: A piston supply apparatus includes a piston gripping portion and a piston supply portion. The piston supply portion includes a connecting rod gripping unit gripping the connecting rod of the piston placed in a preparation area, a guide member abutting against a skirt portion of the piston to match an axial direction of the piston with a predetermined specified direction, a moving unit moving the gripping unit from the preparation area to a supply position in air, and a pivoting unit making the gripping unit pivot such that the piston top portion of the piston in a downward state is set in an upward state. The piston supply apparatus further includes a pressing unit pressing the piston top portion of the piston made to pivot to the upward state against the guide member.

Abstract: A rotation clamping mechanism includes a rotating member and at least two engagement members that are attached to the rotating member and transmit rotational power. The engagement members engage a rotated object placed in a predetermined positional relationship with the engagement members. The rotated object is rotated by rotating the rotating member. The engagement members are supported on the rotating member so as to swing to an engagement position where power is transmitted to the rotated object and to a release position where engagement is released. The rotation clamping mechanism further includes: an opening/closing mechanism that moves the engagement members between the engagement position and the release position; and a biasing member that biases the engagement members toward the engagement position. At the engagement position, the engagement members clamp the rotated object in a floating state with the engagement members pressed onto the rotated object by the biasing member.

Abstract: A piston supply apparatus includes a piston gripping portion and a piston supply portion. The piston supply portion includes a connecting rod gripping unit gripping the connecting rod of the piston placed in a preparation area, a guide member abutting against a skirt portion of the piston to match an axial direction of the piston with a predetermined specified direction, a moving unit moving the gripping unit from the preparation area to a supply position in air, and a pivoting unit making the gripping unit pivot such that the piston top portion of the piston in a downward state is set in an upward state. The piston supply apparatus further includes a pressing unit pressing the piston top portion of the piston made to pivot to the upward state against the guide member.

Abstract: A piston supply apparatus includes a piston gripping portion and a piston supply portion. The piston supply portion includes a connecting rod gripping unit gripping the connecting rod of the piston placed in a preparation area, a guide member abutting against a skirt portion of the piston to match an axial direction of the piston with a predetermined specified direction, a moving unit moving the gripping unit from the preparation area to a supply position in air, and a pivoting unit making the gripping unit pivot such that the piston top portion of the piston in a downward state is set in an upward state. The piston supply apparatus further includes a pressing unit pressing the piston top portion of the piston made to pivot to the upward state against the guide member.

Abstract: A rotation clamping mechanism includes a rotating member and at least two engagement members that are attached to the rotating member and transmit rotational power. The engagement members engage a rotated object placed in a predetermined positional relationship with the engagement members. The rotated object is rotated by rotating the rotating member. The engagement members are supported on the rotating member so as to swing to an engagement position where power is transmitted to the rotated object and to a release position where engagement is released. The rotation clamping mechanism further includes: an opening/closing mechanism that moves the engagement members between the engagement position and the release position; and a biasing member that biases the engagement members toward the engagement position. At the engagement position, the engagement members clamp the rotated object in a floating state with the engagement members pressed onto the rotated object by the biasing member.

Abstract: A piston supply apparatus includes a piston gripping portion and a piston supply portion. The piston supply portion includes a connecting rod gripping unit gripping the connecting rod of the piston placed in a preparation area, a guide member abutting against a skirt portion of the piston to match an axial direction of the piston with a predetermined specified direction, a moving unit moving the gripping unit from the preparation area to a supply position in air, and a pivoting unit making the gripping unit pivot such that the piston top portion of the piston in a downward state is set in an upward state. The piston supply apparatus further includes a pressing unit pressing the piston top portion of the piston made to pivot to the upward state against the guide member.

Abstract: A piston-ring inspecting device includes a sensor unit (27) including a light emitting system (27a) that emits slit-like detection light toward an outer peripheral surface (Ps) of a piston (P) and an outer peripheral surface (2c) of a piston ring (2) and a light receiving image system (27b) that receives light reflected from the outer peripheral surfaces so as to form an image; an image calculating means that subjects image information obtained by the sensor unit to numerical processing and that calculates a tilt angle of the outer peripheral surface of the piston ring with respect to the outer peripheral surface of the piston; and a controller (30) including a judgment means that, based on arithmetical information obtained by the image calculating means and preset standard information, judges whether or not the piston ring has been fitted in a predetermined direction. Accordingly, an inspection can be performed without scanning, through a simple analysis process, in a short time, and with high accuracy.

Abstract: A piston-ring inspecting device includes a sensor unit (27) including a light emitting system (27a) that emits slit-like detection light toward an outer peripheral surface (Ps) of a piston (P) and an outer peripheral surface (2c) of a piston ring (2) and a light receiving image system (27b) that receives light reflected from the outer peripheral surfaces so as to form an image; an image calculating means that subjects image information obtained by the sensor unit to numerical processing and that calculates a tilt angle of the outer peripheral surface of the piston ring with respect to the outer peripheral surface of the piston; and a controller (30) including a judgment means that, based on arithmetical information obtained by the image calculating means and preset standard information, judges whether or not the piston ring has been fitted in a predetermined direction. Accordingly, an inspection can be performed without scanning, through a simple analysis process, in a short time, and with high accuracy.