摘要:
A sand-belt finishing machine includes two opposite grinding devices arranged in parallel with each other and each including two opposite rollers and a sand belt reeved around the two rollers, and a dust clearing device mounted between the two grinding devices. Thus, the wooden board is placed on a single main frame and is processed by a single working procedure to synchronously obtain a double surface treatment, including the rough working treatment and the finishing treatment, thereby greatly simplifying the working process.
摘要:
A birefringent device of substantially uniform thickness less than about 10 microns, and being suitable for operating in a wavelength range about a central wavelength is disclosed. The device includes a base substrate, a layer of periodic index regions of alternating refractive indices applied to a first surface of the base substrate, and a cap substrate located substantially adjacent to the layer distal to the base substrate. The layer of periodic index regions has a periodicity of less than the central wavelength. The device being suitable to produce an arbitrary phase retardation between 0 and 2Π phase.
摘要:
A mobile base includes a main body having a first side formed with two first foot portions and a second side formed with two second foot portions, two fixing rollers each mounted on a respective first foot portion, an adjusting plate mounted between the second foot portions, an adjusting roller mounted on the adjusting plate to move therewith, and an adjusting unit mounted between the second foot portions and urged on the adjusting plate to press the adjusting plate to move. Thus, the adjusting unit is hidden in a space between the first side rack and the second side rack, so that the adjusting unit is not operated unintentionally.
摘要:
An extension structure includes a track, an extension table, and a sliding interface unit. Thus, the extension table can be moved on the track rapidly, easily and conveniently by the sliding guide motion of the sliding interface unit so as to extend the working length of the table of the table saw. In addition, the sliding interface unit has a cheaper price than that of the bearings, thereby decreasing the costs of fabrication of the extension structure. Further, the extension structure is assembled easily and conveniently, thereby facilitating a user mounting the extension structure.
摘要:
A sand-belt finishing machine includes a main frame, and two grinding devices. The main frame is substantially L-shaped and includes a longitudinal portion and a transverse portion. Each of the two grinding devices has a first end rested on the longitudinal portion of the main frame, and a second end formed with a free end. Thus, the grinding devices are located in the opened space formed by the longitudinal portion and the transverse portion of the main frame, and the second end of each of the grinding devices is formed with a free end, so that the operator can touch the grinding devices easily, thereby facilitating maintenance of the grinding devices.
摘要:
An electronic device and a method for automatically converting text to be displayed on a display screen of an electronic device into a speech signal when ambient light conditions affect viewing of the text. The method is performed by the electronic device and the method includes receiving a command to display text on the display screen and determining if an ambient light signal provided by an ambient light sensor is above a pre-determined viewing threshold. This ambient light signal corresponds to ambient light conditions adjacent the display screen. The method also includes automatically converting the text to a speech signal when the ambient light signal is above the pre-determined viewing threshold. Suitably, there is performed a step of emitting the speech signal in an audible form from a speaker.
摘要:
Protein probes and methods for measuring real-time changes in intracellular superoxide formation are provided. The probes include superoxide sensitive variants of yellow fluorescent and green fluorescent proteins. The probes, or nucleic acids encoding the probes, may be delivered to cells or organisms. Changes in the fluorescence of the probes may then be detected using standard real-time fluoroscopy techniques.
摘要:
An adjustable table for a cutting tool adjustable table includes a guide track, a table surface movably mounted on the guide track and having a bottom face formed with a guide channel movably mounted on the guide track, and a plurality of lubricating members each mounted between the guide track and the table surface to function as a lubricating medium between the guide track and the table surface. Thus, the guide track is made of metallic material and each of the lubricating members is made of plastic material, so that when the guide track touches the lubricating members, the noise produced by friction between the guide track and each of the lubricating members is reduced largely.
摘要:
A pre-cutting blade assembly for a table saw includes a fixing seat, a movable seat movably and adjustably mounted on the fixing seat, and a pre-cutting blade mounted on the movable seat to move therewith and movable to align with the circular blade of the table saw. Thus, the pre-cutting blade is movable relative to the circular blade of the table saw so that the cutting line of the pre-cutting blade is aligned with that of the circular blade of the table saw exactly, thereby enhancing the cutting precision of the circular blade of the table saw.
摘要:
A cutting device includes a fixing seat, a crank axle pivotally mounted on the fixing seat by a pivot shaft, a first saw blade mounted on the pivot shaft, a second saw blade mounted on the crank axle to move therewith, a motor mounted on the crank axle, and an adjusting unit mounted between the fixing seat and the crank axle to drive the crank axle to move relative to the fixing seat. Thus, the adjusting unit is operated to drive the crank axle to pivot, so that the second saw blade mounted on the crank axle is moved downward or upward, thereby adjusting the height of the second saw blade relative to the first saw blade so as to fit workpieces of different thickness.