摘要:
A method of manufacturing an edge reflection type surface acoustic wave device using a Shear Horizontal type surface acoustic wave includes the steps of making a first half cut defining first end surface portions having a smooth surface, that is, opposing two end surfaces which function as reflection end surfaces, from the upper surface of a piezoelectric substrate after at least one of a plurality of IDTs has been formed on the upper surface of the piezoelectric substrate, making a second half cut for forming second end surface portions having a rough surface after making the first cut, and making a full cut for cutting the piezoelectric substrate so as to reach the lower surface of the piezoelectric substrate outside of the second end surface portions in the surface acoustic wave propagation direction.
摘要:
A cutting station comprising a bed; a work surface supported on the bed; a carriage traveling along the longitudinal axis of the bed by virtue of a first motor; two cutting members connected to two second motors; and a structure supporting the cutting members and second motors, and designed to travel, by virtue of actuators, along vertical slideways supported on the carriage, and to be carried by the carriage during traversing of the same. The bed comprises two fixed parallel beams supporting the work surface, and a first of which also supports two horizontal slideways for supporting and guiding the carriage. The center of gravity of the second motors lies within the space defined between the horizontal slideways.
摘要:
An apparatus for manufacturing integral wooden angle bars from an integral block of wood which includes a pair of grips for abutting opposite sides of the block of wood, a cradle structure, pivotable away from the pair of grips, for receiving the integral block of wood by gravity feeding and for aligning the integral block of wood so as to be abuttable and thereby fixable by the pair of grips; and a pair of saws for making at least first and second incisions in the block of wood while fixed by the grips and cradle, the first incision extending from a first side of the block of wood to a centerplane thereof, and a second incision extending from a second side of the block of wood opposite the first side, to the centerplane, whereby the planes of the first and second incisions intersect at an angle of substantially 90.degree.. The power saws respectively comprising first and second saw blades for cutting the first and second incisions, the power saws being positioned to cut along the centerplane in tandem, whereby at least two incisions can be made.
摘要:
A method and apparatus are disclosed for making improved grafting joints between plant components, particularly woody plants. Selected plant materials may be grafted one upon another by cutting out two diametrically opposed, longitudinally diagonal sectors from each end of the plant parts to be joined. The sectors are of equal length on each plant part and are joined by slipping the sectored end of one plant part into the cooperating sectored end of the other plant part so that the parts interlock. The joint is then enveloped by tape or the like to seal the joint.Hand tools and semi-automatic machinery are disclosed for sectoring plants in a single operation and include radial cutting elements arranged perpendicularly to one another and adapted to make four simultaneous slits lengthwise and diagonally along the plant simultaneously removing the waste slit sectors.
摘要:
A portable timber milling apparatus comprising a wheeled, mobile platform with a power generator set located on one end thereof. The platform carries a longitudinally extending beam supported adjacent each end for transverse movement by transverse beam support members which are engaged with posts located on each side of the platform. The posts carry elevating means for vertical movement of the members and the beam. A carriage mounted on wheels for movement along the beam, the carriage having vertical and horizontal saw blades each driven by separate electric motors. A further electric drive motor is provided to move the carriage along the beam. A plurality of log traversing chains are mounted on the platform and are operable to move a log thereof to a position centrally of the platform and aligned with the beam.
摘要:
A calibrated slot cutter adapted to be inserted into a small diameter pipe for cutting a calibrated slot or groove at a position in the pipe remote from its ends wherein the slot cutter apparatus includes a drive unit, an extension unit, and a cutter assembly unit which may be connected together to form the cutter apparatus of the present invention. Such units are releasably coupled together to facilitate transportation of the unit to remote locations and, extension units of different lengths may be used to position the cutter unit at the desired distance inwardly from the open end of the pipe.
摘要:
A machine for dividing wooden bodies into channel-shaped elements characterized by the use of a pair of guide ledges on a support surface to fit in each kerf to guide said bodies through said machine and kerf filling elements corresponding to the shape of the kerf cut by the preceding saw cylinder and loading means to urge said bodies toward said support surface.