A platen for a metallographic grinder has an outer peripheral rim with an upper surface having a lower height. Also, fingers engaging a specimen are allowed to move laterally (i.e., wobble) to minimize the tipping forces on the specimen during the grinding process. Either one or both of these structures can be employed and results in a much flatter specimen surface for use in subsequent analysis.

Equipment for grinding external rings of roller bearings includes a supporting pin of a bearing to be ground, a stop extending outwardly from the supporting pin for axial positioning of a side of the bearing, a sliding flange on the pin which can be positioned to rest on the other side of the bearing, a clamping nut which can be firmly positioned on a complementary portion of the pin, skids preloaded by springs situated on opposite sides of the bearing, and a guiding element on the opposite side of the stop, which receives a structure carrying a pair of contrast rolls movable to be engaged with the external ring of the bearing creating a radial force thereon, which can be predetermined and regulated by a maneuvering element to eliminate the clearance of the bearing in the radial direction. A machine for housing equipment of the above specified type.

A device for producing a curved surface (2) of a work piece (1) includes a tool (3) and a tool holder for receiving the tool (3), the tool holder being drivable for rotation about a tool axis (4). At least one work piece holder accommodates a work piece (1). The work piece holder is drivable for rotation about a work piece axis (5). The tool axis (4) and the work piece axis (5) are positionable at an angle relative to one another. The tool axis (4) and the work piece axis (5) are positionable at an angle relative to one another. A work piece holder support (6) receives a plurality of work piece holders, the work piece holders being rotatably drivable relative to the work piece holder support (6). The work piece holder support (6) is rotatably drivable about a work piece holder support axis (7), so that based on superposed rotations of work piece holders and work piece holder support (6) and the rotating tool, the surface (2) of each work piece (1) is curved after end machining, depending on an inclination angle.

A polishing machine for fine polishing and abrading work configured to employ a random walk theory algorithm to generate the movement pattern of the polishing or abrading element.

A substrate processing apparatus includes: a first holding part configured to hold a substrate; a second holding part configured to hold the substrate; a sliding member configured to rotate about a vertical axis so that the sliding member slides on a back surface of the substrate; a revolution mechanism configured to revolve the sliding member under rotation about a vertical revolution axis; and a relative movement mechanism configured to horizontally move a relative position between the substrate and a revolution trajectory of the sliding member so that when the substrate is held by the first holding part, the sliding member slides on a central portion of the back surface of the substrate, and when the substrate is held by the second holding part, the sliding member slides on the peripheral portion of the back surface of the substrate under rotation.

A holder (1) for pneumatically blocking an optical lens (300) on a surfacing machine, includes:a gripping part (10) for fixing it to a corresponding member (200) of the surfacing machine, anda part (100) for blocking the optical lens, which includes a body (110) from which there protrude abutments which are designed to afford the optical lens a rigid seat, and a seal (170) against which the optical lens is able to be brought to bear in order to delimit with the body a vacuum chamber (180). The abutments include first rods (160) which are mounted so as to be movable in translation with respect to the body in order to bear by way of their free ends (161) against the optical lens, and provision is made of return elements (179, 190) for returning the first rods against the optical lens.

The present disclosure provides an automatic chuck apparatus comprising a mechanical chuck, a mechanical chuck mounting bracket, a hydraulic motor, a lifting mechanism, a chuck key and a lifting cylinder. The mechanical chuck is mounted above the mechanical chuck mounting bracket. The hydraulic motor, the lifting mechanism and the lifting cylinder are mounted below the mechanical chuck mounting bracket. The hydraulic motor is configured to control the rotation of the chuck key, the lifting cylinder is configured to drive the chuck key to ascend or descend through the lifting mechanism, thereby the mechanical chuck is locked or loosened by the chuck key. The present disclosure further provides a grinding wheel cutting apparatus and a cutting method. In the present disclosure, the locking of the chuck is automatically controlled, thereby improving the working efficiency and ensuring sufficient locking force of the chuck.

A grinding apparatus and a crystal orientation adjustment fixture thereof are provided. The crystal orientation adjustment fixture includes a fixing seat, an adjustment body, a first adjustment component, and a universal mandrel module. The adjustment body is assembled to the fixing seat through a rear end surface thereof. The adjustment body has a universal slot recessed in a front end surface thereof and a first adjustment slot formed along an adjustment direction, and a bottom of the first adjustment slot corresponds in position to the fixing seat. The first adjustment component is movably assembled in the first adjustment slot along the adjustment direction and abuts against the fixing seat. The universal mandrel module is rotatably assembled in the universal slot. The first adjustment component is adjustable along the adjustment direction to move the adjustment body relative to the fixing seat along the adjustment direction.

A device for producing a curved surface (2) of a work piece (1) includes a tool (3) and a tool holder for receiving the tool (3), the tool holder being drivable for rotation about a tool axis (4). At least one work piece holder accommodates a work piece (1). The work piece holder is drivable for rotation about a work piece axis (5). The tool axis (4) and the work piece axis (5) are positionable at an angle relative to one another. The tool axis (4) and the work piece axis (5) are positionable at an angle relative to one another. A work piece holder support (6) receives a plurality of work piece holders, the work piece holders being rotatably drivable relative to the work piece holder support (6). The work piece holder support (6) is rotatably drivable about a work piece holder support axis (7), so that based on superposed rotations of work piece holders and work piece holder support (6) and the rotating tool, the surface (2) of each work piece (1) is curved after end machining, depending on an inclination angle.

A component according to the disclosure may include a body having an aperture therein for receiving one of a turbomachine shaft or a lathe chuck, wherein in response to the body being coupled to the lathe chuck, the aperture is oriented substantially axially relative to an axis of rotation of the body with the lathe chuck; and a flange coupled to and in direct axial contact with the body, the flange including a surface that extends axially relative to the axis of rotation of the body, wherein the surface of the flange comprises a matingly engageable face configured to contact an axially aligned surface during operation of the component and having a sanding indentation thereon, wherein a surface roughness of the surface of the flange is less than a surface roughness of a remainder of the component.