Abstract:
Vorrichtung (10) und Verfahren zur Bestimmung der Position einer Arbeitsfläche (16, 18) einer Arbeitsscheibe (12, 14) einer Doppelseitenbearbeitungsmaschine, wobei die Vorrichtung eine optische Messeinrichtung (24) mit einer Strahlungsquelle, einer optischen Detektoreinrichtung und einer Auswerteeinrichtung umfasst, die dazu ausgebildet sind, außerhalb des Arbeitsspalts angeordnet zu werden, wobei die Vorrichtung eine Strahlführungseinrichtung (26) aufweist, die dazu ausgebildet ist, zumindest teilweise in den Arbeitsspalt (20) eingeführt zu werden, und die Strahlführungseinrichtung (26) die optische Strahlung ausgehend von der Strahlungsquelle zunächst im Wesentlichen parallel zu den Arbeitsflächen (16, 18) in den Arbeitsspalt (20) führt, an einem Messort über mindestens eine Umlenkfläche (30) auf eine Arbeitsfläche (16, 18) umlenkt, von der Arbeitsfläche (16, 18) reflektierte Strahlung aufnimmt und wieder aus dem Arbeitsspalt (20) heraus zu der optischen Detektoreinrichtung führt, und die Strahlführungseinrichtung (26) eine mit einer Fluidversorgung verbundene Fluidzuführung (38) aufweist, mit der zumindest ein von der optischen Strahlung nach dem Austritt aus der Austrittsöffnung (32) der Strahlführungseinrichtung (26) im Arbeitsspalt (20) durchlaufener Messbereich spülbar ist.
Abstract:
A wafer polishing apparatus is provided. The wafer polishing apparatus includes a first polishing roller disposed on a wafer, the first polishing roller extending in a direction in which the wafer extends and a second polishing roller disposed under the wafer, the second polishing roller extending in the direction in which the wafer extends. The wafer polishing apparatus uses the roller to polish the wafer. Thus, the wafer polishing apparatus may easily polish a wafer having a large area.
Abstract:
A method and apparatus for conditioning a processing surface of a cylindrical roller disposed in a brush box is described. In one embodiment, a brush box is described. The brush box includes a tank having an interior volume and a pair of cylindrical rollers at least partially disposed in the interior volume, each of the cylindrical rollers being rotatable about a respective axis, an actuator assembly coupled to each of the cylindrical rollers to move the respective cylindrical roller between a first position where the cylindrical rollers are in proximity and a second position where the cylindrical rollers are spaced away from each other, and a conditioning device for each of the cylindrical rollers, each conditioning device including a conditioner disposed in the interior volume, the conditioner contacting an outer surface of each of the cylindrical rollers when the rollers are in the second position.
Abstract:
A spacer manufacturing method can manufacture a spacer to be mounted in a spindle stock, so precisely and simply at a low cost as need not use a bearing of a large size or a bearing of a special design so as to support an unclamping force. An inner-ring spacer (4) and an outer-ring spacer (5) have load receiving portions (4a and 5c), which confront each other in the axial direction through a clearance (d) of a predetermined size, and are halved in splitting planes (F1 and F2) normal to the axial direction and extending through the load receiving portions (4a and 5c). An inner-ring spacer splitting member (4A) having a load receiving portion (4b) and an outer-ring spacer splitting member (5A) having the load receiving portion (5c) are simultaneously worked to have equal axial widths. In addition, an inner-ring spacer splitting member (4B) not having the load receiving portion (4b) and an outer-ring spacer splitting member (5B) not having the load receiving portion (5c) are simultaneously worked to have equal axial widths, so that the axial width (b) of the latter may be longer by the clearance (d) than the axial width (a) of the former.
Abstract:
The present invention is to provide a processing method for manufacturing a highly flat and highly smooth glass substrate with good productivity. A highly flat and highly smooth glass substrate is obtained with good productivity by processing of a glass substrate, which comprises a step of measuring the surface shape of the glass substrate prior to processing, a step of processing the surface of the substrate by changing a processing condition for each site (first processing step), and a step of finish-polishing the surface of the glass substrate that has been subjected to the first processing step (second processing step). At that time, the processing condition for each site within the surface of the substrate in the first processing step is determined from a processing amount that is determined from the concave-convex shape of the surface of the glass substrate prior to processing and the in-plane distribution of a processing amount by the second processing step separately measured by using a similar substrate.