Abstract: A thickness control device and method for maintaining the thickness of the rolled material which is passed between the rollers of a rolling mill, in which the rollers above and below the rolling material are rotated at different speeds V.sub.H and V.sub.L. A variation in rolling material thickness is detected and expressed in terms of a change in rolling load WF. ##EQU1## is also detected. The change in rolling load .DELTA.F and the differential peripheral speed rate X are used to derive the change in differential speed rate .DELTA.X which would cancel out the variation in rolling material thickness. This correcting differential peripheral speed rate .DELTA.X is then utilized to change the velocities V.sub.H and V.sub.L of the upper and lower rollers, respectively, such that the thickness variation is eliminated without changing the speed of the rolled material.
Abstract: The invention concerns a tube release roll mill with four or more driven rolls, which in pairs form a pass opening. The diagonally positioned identically constructed rolls have an enlarged working surface width. A certain roll pair spacing is also provided, as well as an enlarged angle of attack of the rolls, which together result in the wall thickness of the tube bloom being more uniform, the development of fewer surface defects, and a quieter operation of the roll mill.
Abstract: A ring rolling machine for cold rolling bearing cages and the like has a working station (32) at which the rolling operation is performed on an annular blank by an annular die (80,82) co-operating with a mandrel (50). The die is held coaxially in a die housing (74) mounted rotatably in one of two through openings (62,64) in a shuttle (42) which is reciprocated between the working station and two alternate transfer stations (28,30) at which the front die insert (82) is ejected with the rolled ring and re-inserted with a fresh blank. The die housing projects through a slot (70) in the shuttle to engage the die drive roll (78), and via the die transmits rotation derived from the drive roll to the mandrel and a pair of mandrel support rolls (110) which apply radial force to the mandrel. The mandrel support rolls are mounted in a head on a shaft pre-tensioned to control their axial position without fasteners; they also control the axial positions of the die and mandrel.
Abstract: A table assembly for a multipurpose tool is used in combination with a tool of the type having a frame, a pair of parallel way tubes mounted on the frame, a headstock mounted on the frame having a motor driven spindle, and releasable pivots which allow the way tubes to be pivoted about their ends to a substantially vertical positions. The table assembly includes a table top, a pivot mounted beneath the table top, a pair of support legs having racks on opposite sides thereof and attached to the pivot, and a carriage, mounted on the way tubes, having channels to receive the support legs. A pair of pinion gears are positioned within the channels to mesh with the racks and are driven by a crank having a locking mechanism so that the table can be displaced relative to the carriage.
Abstract: In a method and a system for controlling an interstand tension in a continuous rolling mill having a looper provided between a pair of successive rolling stands and driven by a looper drive motor, a correction to the speed target value for the looper drive motor is determined in accordance with the deviation of a detected looper operating angle from an angle target value, and the looper drive motor is controlled in accordance with the speed of corrected speed target value.
Abstract: Apparatus for use in the lineal feeding of logs to saws or canters has a main conveyor with an endless chain which extends up to and beyond the cutting elements of such log processing equipment. A hold-down conveyor is vertically aligned with the main conveyor and there are spring flights on an endless chain of this hold-down conveyor. Opposing runs of the two conveyors are spaced apart to grip and hold a log between the runs so that, when drive is transmitted to the chains, the log is advanced endwise and is fed through the cutting elements allowing them to cut or chip along part of or the entire length of opposite sides of the log. The apparatus has the ability to maintain a log on a fixed track relative to the saw, canter or the like and this ensures the maximum possible yield of useful lumber.
Abstract: The adzing bit assembly includes a circular cutting bit with a circular edge formed by the merging of its flat face and its peripheral surface at an acute angle. A cutting bit shield abuts and covers the face of the cutting bit and extends to a diameter substantially equal to the diameter of the cutting edge, so as to shield the face and the cutting edge of the cutting bit. The cutting bit is fabricated from harder material than the cutting bit shield, so that the cutting bit shield wears away during use and the circular cutting edge of the cutting bit is progressively exposed.
Abstract: A lathe for cutting a spiral strip of veneer from the surface of a log includes motor-driven mechanisms for adjusting the knife blade pitch angle and edge height, and for moving a pressure head relative to the knife to adjust the vertical gap and horizontal gap between the knife edge and the roller bar, and provides sensors for determining the actual positions of movable elements of the lathe, thus enabling computer-controlled adjustment of the movable elements of the lathe during lathe operation. A knife clamp of the lathe includes a plurality of separate clamp segments for pressing against different portions of a knife bar to hold it firmly, resisting deformation and rocking of the knife bar. Fluid-pressure-biased bearings eliminate looseness between relatively movable parts of the lathe, reducing the amount of variation of thickness in veneer produced using the lathe. Veneer thickness is controlled by monitoring cumulative movement of the lathe spindles and the main feed carriage.
Abstract: Apparatus is provided for supporting the mandrel back-up bar of a press-piercing rolling mill. The apparatus comprises a plurality of constraining elements supported by a base in two lines disposed parallel to and symmetrically with respect to the rolling and piercing axis of the rolling mill. All the constraining elements of each line are mounted on a single beam which is supported on horizontal guides perpendicular to the rolling axis and adjustable in position on the guides. This arrangement facilitates the simultaneous adjustment of all the constraining elements making up a line.
Abstract: An improved cutter knife for wood chip and flake producing apparatus includes shallow grooves in either the heel face or the gullet face of the knife intersecting the cutting edge and extending away from the cutting edge. The depth of the grooves is less than the depth of cut of the knife, and the grooves and corners formed by the grooves with the cutting edge provide an aggressive serrated cutting edge which penetrates into the wood and remains sharp longer than conventional cutting edges. Also disclosed is a novel wood flake material in which flake members have a larger area of exposured grain than of exposed side grain, thereby providing a short fiber length flake which can absorb moisture quickly by means of the exposed end grains, and can also dry quickly. The flake material is particularly useful as a bedding material for animals.
Abstract: The present invention relates to a spring manufacturing machine equipped with two motors, which includes a wire feeding motor, a tool operating motor, and a control unit for controlling functions of these motors. The spring manufacturing machine is provided with an auxiliary feed mechanism so that wire feeding rollers as well as tools such as a coiling tool, etc. may be operated by the tool operating motor, and is capable of operating the tool and wire feeding rollers in timed relation by the tool operating motor, without necessity for frequent starting and shutting down of the tool operating motor and wire feeding motor even in the case where complicated processing is to be imparted to springs.
Abstract: A veneer slicer comprises a reciprocating flitch table providing a mounting surface for a flitch, a knife and pressure bar assembly movable along a path normal to the mounting surface, top and bottom dogs for gripping the flitch and holding the flitch against a central portion of the mounting surface, an intermediate dog mounted on the flitch table in proximity to the central portion of the mounting surface, a projecting device for projecting the intermediate dog from a retracted position within the flitch table to a projected position a distance from the mounting surface, and a power system for moving the top and bottom dogs toward the central portion of the mounting surface to concurrently grip and hold two sections of the flitch against the mounting surface. The top and intermediate dogs grip opposite portions of one of the flitch sections, and the bottom and intermediate dogs grip opposite portions of the other flitch section.
Abstract: A work table for a saw includes a pair of parallel spaced apart horizontally extending guide channels, each guide channel having a vertical web and upper and lower horizontal flanges, the open sides of the channels facing one another; a saw support plate having two pairs of runners for supporting the saw support plate, one pair of runners at one end of the plate and projecting outwardly from the sides of the plate and the other pair of runners at the other end of the plate and projecting outwardly from the sides of the plate. The runners are received within the channels to support the saw support plate in a horizontal plane and the saw support plate is movable in a horizontal plane. The guide channels are provided with apertures in their upper flanges through which the runners may pass, whereby a pair of runners may be lifted from the channels to rotate the saw support in a vertical plane to invert the saw plate and then the runners may be reengaged with the channels.
Abstract: A veneer lathe for turning a log thereon to cut off veneer sheets therefrom. The log is principally driven by a rotary roller having a plurality of projections therearound, which roller is pressed against the log to ensure positive engagement with the periphery thereof. The log is formed with a center bore at a core portion thereof. A spindle to support the log is inserted into the center bore to prevent the log deflection due to the pressure from the rotary roller. Another form of this veneer lathe is additionally provided with a center bore forming mechanism together with a centering mechanism for the boring operation such that a center bore is formed in the log in advance before being turned on the veneer lathe.
Abstract: In a bundling apparatus, a stack of sheets is wound with a band coated on one side with a thermally fusible material by a winder. The winder winds the band so that one end of the band is joined with another portion of the band. As the band is wound around the stack of sheets, a forward end portion of the band is turned up by a turning mechanism, thereby forming a turnup portion in the band. The turnup portion and that portion of the band which is joined with the turnup portion is fused by a heater so that both portions are bonded together.
Abstract: A manual work-feeding device and guard body for a shaping machine. The device provides direct access to the cutting tool and further provides for in-process visual inspection while protecting the operator from injury.
Abstract: A jig construction having adjustable spacers which may be positioned to accommodate various sizes of pre-cut paperboard or cardboard sheets from which folded pallets are formed. The jig includes manually and semi-automatically actuated mechanisms for adjusting the size of the cardboard pallet formed thereon, and to facilitate bending and creasing sections of the paperboard for forming the pallet construction.
Abstract: A multipurpose material working tool includes a frame on which is mounted a headstock having a spindle extending axially therefrom which is adapted to receive various rotary tools and a radial trolley adapted to move on ways toward and away from the headstock. The radial trolley is equipped with a tail stock to be used in conjunction with a face plate or headstock spur center attached to the spindle and can also be equipped with various radial tools for performing work on materials located either on the bed of the trolley or in movable radial support stands attached to the frame. The multipurpose material working tool can also include a band saw secured to the frame at a position adjacent to the work headstock and which is adapted to be driven by the same motor as that which drives the work headstock.
Abstract: The invention relates to a process for cropping the head of self-luminous rolled material, especially metal strips when it passes a rolling train. A line scanning camera is used for detecting the shape of the head by repeatedly generating optical images of the rolled material immediately downstream of the last roughing stand. The distance separating the cutting line from the beginning of the head is determined in accordance with the shape of the head. Immediately upstream a pair of shears the velocity and the beginning of the head are detected. A control signal for the shears is generated in accordance with the signals for the beginning of the head and for its velocity and with the distance of the cutting line from the beginning of the head.
December 20, 1982
Date of Patent:
February 5, 1985
Thyssen Aktiengesellschaft vorm. August Thyssen-Hutte
Hans-Jurgen Reizig, Friedrich Meuters, Hans-Richard Louen
Abstract: A tilting table for a woodworking tool comprising a support member, a pair of trunnions pivotally attached to the support member for movement about a common axis, a table top attached to and supported by the trunnions, a pair of wedge blocks mounted to slidably engage the trunnions and support member, and carried on a rod having a nut threaded thereon such that inward displacement of the nut urges the wedge blocks toward each other, thereby jamming the wedge blocks between the trunnions and the support member. The wedge blocks are spring loaded such that outward displacement of the nut allows the wedge blocks to be urged outwardly from their jamming engagement, thus permitting the table top and trunnions to be pivoted relative to the support member.