The invention relates to a downdraft table (1) having a workpiece holder (2) for a workpiece to be held, wherein the workpiece holder (2) is configured in a stationary manner, wherein a suction-extraction device (3) is arranged beneath and/or next to the workpiece holder (2), said suction-extraction device (3) being used to discharge particles and/or gases downward in a waste air flow, wherein the suction-extraction device (3) is arranged around the workpiece holder (2) with respect to the latter and is configured to be rotatable about the workpiece holder (2).

Various embodiments of the present technology generally relate to precise rotary motion control systems. More specifically, some embodiments relate to systems, methods, and means for providing pressure to a non-contact rotary system. In some embodiments, the rotary system comprises a rotary shaft that can rotate three hundred and sixty degrees continuously. In order for the rotary system to be entirely non-contact with any surfaces of surrounding components or housing, pressure must be supplied to a rotary air bearing that floats the rotary unit above a surface. In some examples, the bottom air bearing is a vacuum preloaded (VPL) air bearing. As such, the VPL air bearing requires a supply of positive pressure and a supply of negative pressure to stabilize the rotary unit. The present technology provides a mechanism for providing pneumatic air to the air bearing without a physical connection to the rotary shaft or air bearing.

An apparatus (B) controls rotation of an annular member (36) relative to top and bottom housings (12, 10). The bottom housing (10) includes a disk (110) extending radially and terminating in a cylindrical portion (112) having circumferentially spaced slits (212). A wedge (16) abuts with the cylindrical portion (112) and is moved radially between first and second positions by an axially moveable piston (14), with the wedge including an angle surface (340) which interfaces with an angled surface (520) of the piston (14) through a plurality of balls (18). The disk (110) and the cylindrical portion (112) are formed as a single component of material having sufficient material strength and yield to allow engagement and disengagement of the cylindrical portion (112) with the annular member (36). The wedge (16) is slideable between an axial surface (250) of the disk (110) and a guiding flange (450) of the top housing (16).

A rotary table device includes: a case; a spindle having an axis hole that is provided rotatably in the case and extends through along an axis direction of a center portion; a rotary joint having a rotary shaft attached non-rotatably to the axis hole of the spindle; and a clamp mechanism arranged in a rear end side of the case and having a component attached non-rotatably to the spindle, the rotary shaft having an attachment flange unit with the spindle in a front end portion, the rotary shaft inserted to the axis hole from the front end side of the spindle to be attached to the spindle by the attachment flange unit, a rear end portion of the rotary shaft projecting from a rear end surface of the spindle, the component of the clamp mechanism mounted to a rear end portion of the rotary shaft projecting from the rear end surface of the spindle from a rear end side, and contacting with and externally fit to an outer circumferential surface of the rear end portion.

A table rotation device includes a bearing assembly, a table support member, a support block, and a cooling block. The bearing assembly includes a fixed ring, a movable ring, and rolling elements provided between the fixed ring and the movable. The movable ring is rotatable about the rotation axis. The table support member is connected to the movable ring so as to fix a position of the table support member relative to a position of the movable ring. The support block is connected to the fixed ring so as to fix a position of the support block relative to a position of the fixed ring. The cooling block is connected to at least one of the fixed ring and the support block such that the cooling block is in contact with both the fixed ring and the support block. The cooling block provides a cooling passage.

A detection device for detecting a workpiece with multiple surfaces includes a rotary table carrying the workpiece and moving the workpiece by rotation and a plurality of photographing devices arranged at a plurality of different positions around the rotary table. Each photographing device has an image capture device capturing an image of a corresponding surface of the workpiece that is moved to the image capture device. An orientation of the image capture device is defined by a first offset angle and a second offset angle when the image capture device captures the image of the corresponding surface of the workpiece.

A machine tool includes a rotation indexing device and an abnormality determination device. The rotation indexing device including a clamp device configured to maintain a rotary shaft at an indexed angular position and an air purge device configured to supply compressed air to a space within a frame. The abnormality determination device includes a pressure sensor configured to output a pressure signal according to a pressure in a supply pipe conduit of the air purge device, and a determinator configured to determine presence or absence of an abnormality, based on the pressure signal from the pressure sensor.

Provided is a work processing apparatus configured so that limitations on the contents of processing for a work piece or the type of work piece can be reduced and processing for a wider range of processing contents and work piece can be performed. In a work processing apparatus 100, a work table 101 is, through a table displacement mechanism 103, supported on a rotation base 120 to be rotatably driven by a table rotary drive motor 125, and a weight holding tool 110 is supported on the rotation base 120 through a weight displacement mechanism 114. The table displacement mechanism 103 includes a rack-and-pinion mechanism configured to displace the work table 101 in an X-axis direction as viewed in the figure. At the table displacement mechanism 103, a power inputter 108 configured to input drive force from a table displacement mechanism drive apparatus 130 is provided. The table displacement mechanism drive apparatus 130 is, by a drive source displacement apparatus 132, connected to or disconnected from the power inputter 108.

A multi-axis turntable includes a base, a rocker arm and a first driving device capable of driving the rocker arm to rock around the first rotation axis on the base. A swing arm and a second driving device, which is capable of driving the swing arm to swing around the second rotation axis on the rocker arm, are provided on the rocker arm. A workbench and a third driving device for driving the workbench to rotate around the third rotation axis are provided on the swing arm. The second rotation axis and the third rotation axis are parallel to each other or on different planes. Compared with the existing double rotating shaft turntable, the multi-axis turntable of the present invention has a cutting tool system of good and stable rigidity.

The present invention discloses an efficient brake disc processing device, which relates to the technical field of brake disc processing, comprising a lathe bed, an upright vertical lathe and a first power tool holder installed on a top end of the lathe bed, and an inverted vertical lathe and a second power tool holder installed on a rear side of the top end of the lathe bed, wherein the upright vertical lathe is cooperated with the second power tool holder to process an upper brake surface of a brake disc, and the inverted vertical lathe is cooperated with the first power tool holder to process a lower brake surface of the brake disc.