Abstract: A method for multiple-stroke slotting of planar workpieces includes positioning a workpiece relative to a slotting tool having a punch and a die, moving the punch and the die relative to one another, moving the slotting tool and the workpiece relative to one another, slotting a workpiece by a slot length during a sectioning slot stroke and at least one subsequent slotting stroke in a sectioning phase, and performing strokes in form of slotting strokes and at least one trimming stroke during the relative movement of the punch and the die in a working phase. The subsequent slotting stroke is performed prior to the trimming stroke, and the slot length exceeds a maximum attainable slot length during the trimming stroke. The workpiece and the slotting tool are moved relative to one another by at least one feed movement between the strokes.

Abstract: A nibbling tool (11) adapted to incrementally remove material from an edge of sheet material (96). The nibbling tool (11) comprising a punch (71) adapted to reciprocate within a die (81). The punch (71) is configured to define a substantially radial contact surface (78) having a peripheral edge (79). The die (81) comprises an elongate guide for guiding reciprocation of the punch (71). The die (81) has a slot (87) which is adapted in use to receive said edge of the sheet material (96) and which is so positioned that the radial contact surface (78) on the punch (71) is caused to reciprocate across the slot (87). The slot (87) comprises a support surface (88) adapted to provide support to the sheet material (96) such that in use the peripheral edge of the contact surface (78) is caused to engage the sheet material (96) and cause it to be pressed against said support surface (88) to cause the incremental removal of material from the sheet (96).

Abstract: A system automatically cuts recording media into non-standard sizes and shapes. The system includes a support for supporting recording media, a feeder mechanism for transporting recording media onto the support, a cutting head having at least one cutting member, and a controller for actuating reciprocation of the cutting member so that the reciprocating cutting member cooperates with the support to pierce the recording media. The cutting head and feeder mechanism are controlled so that the cutting head is moved to positions for cutting the recording media as the recording media is advanced on the support.

Abstract: An end face polishing apparatus has a support member mounted on the main body for undergoing revolving and rotational movement during a polishing operation, a tubular member mounted on the support member for rotation and revolving movement therewith, a lapping member mounted on the support member for rotation and revolving movement therewith, and a polishing fixture for supporting at least one workpiece having an end face for pressure contact with the lapping member to polish the end face of the workpiece during rotation and revolving movement of the lapping member. The polishing fixture has radially outwardly projecting guide members for contacting the tubular member to limit the amount of polishing of the end face of the workpiece in a pressing direction during rotation and revolving movement of the lapping member.

Abstract: An end face polishing apparatus has a support member mounted for undergoing rotational movement. A tubular member is mounted on the support member for rotation therewith. The tubular member has a first surface connected to a main surface of the support member and a second surface extending in an axial direction at a first distance from the main surface of the support member. A lapping member is mounted on the support member for rotation therewith. The lapping member has a first surface connected to the main surface of the support member and a second surface extending in the axial direction at a second distance from the main surface of the support member smaller than the first distance.

Abstract: A method and machine for the multi-stroke, continuous slotting of plate-shaped workpieces and especially sheet metal plates are described. As part of a method for the continuous multi-stroke slotting of plate-shaped workpieces, a slotting tool (16) and the workpiece are moved in an advance direction relative to each other in a gate-cutting function and is at least one subsequent slot cutting stroke. This is followed by a return movement in the opposite direction (32) over a return length (A) that corresponds at a maximum to the length of the previously laterally cut slot. This is followed by a cross-cutting stroke in which the strip of material (31) that was laterally cut in the gate-cutting function and the minimum of one subsequent slotting stroke is severed at a distance from the point of its connection to the remaining workpiece.

Abstract: A method and apparatus for producing a non-linear, ornamental edge along a cement siding workpiece. In accordance with one embodiment of the invention, a first cutting blade is configured to have a non-linear shape corresponding to a shape of an ornamental feature that is to be cut in the cement siding workpiece. A second cutting blade is then configured to have the non-linear shape of the first cutting blade. The first and second cutting blades are aligned with one another to position a first cutting edge on the first cutting blade opposite to a second cutting edge on the second cutting blade. A cement siding workpiece is then positioned between the first and second cutting blades so that the first and second cutting blades are aligned with a location at which an ornamental feature is desirably formed on the workpiece.

Abstract: An apparatus and method for manufacturing partially cut (semi-converted) products in continuous roll form has input feeds for supplying a continuous web of material and a continuous transport web in parallel, feed rollers for incrementally advancing the two webs together to a cutting station where product units are partially cut in successive increments in a continuous strip, a scrap remover, and a station for winding up the cut product strip. The webs are unwound and the cut product strip is wound via dancer bars maintaining constant tension. The input webs have a width which is a multiple of the width of the product units so that multiple strips can be formed simultaneously. The invention is used to form semi-converted, micro diskette liners having connecting portions and indented cutouts marking the boundaries between units. The cutouts are overcut in one direction and also in an intersecting direction to obtain complete cuts despite slight variations in registration.

Abstract: To eliminate defects such as burr, rollover, sags, scar, etc. from cut-off surfaces of a workpiece in a turret punch press, for instance, a novel height-different punch formed with a lower front edge, an upper rear edge, and an intermediate edge extending between the two edges is used for the punch press. While feeding the workpiece on a horizontal plane in a predetermined direction, the punch is struck by a striker at a first stroke so that the lower front edge thereof cuts off the workpiece partially in cooperation with a die; at the succeeding strokes so that the intermediate edge thereof cuts off the workpiece mincingly and curls refuse within a recess of the die; and at the last stroke so that the upper rear edge thereof cuts curled refuse away from the workpiece to complete a multistroke punching operation.

Abstract: A machine for cutting coarse sod into relatively small plugs for ready packaging and subsequent transplanting, comprising an endless conveyor belt upon which comparatively large rectangular sections of sod can be deposited, so that the sections of sod can be moved intermittently toward a sod cutting device. The sod cutting device preferably is of the single pass cutter type, utilizing a plurality of elongate, closely grouped blades designed to periodically move in unison downwardly into contact with sod to be cut, with such downward cutting movements being immediately followed by an upward movement, thus to permit an advance of the section of sod without interference. I coordinate the movements of the sod cutting device with the belt advance, such that forward movement of a section of sod is in each instance prevented until the cutting blades are clear of the section of sod being cut.

Abstract: A device designed to stamp generally rectangular blister packages from an intermittently advancing laminated strip comprises a die with rounded corners whose radii of curvature are substantially larger at a transverse leading edge than at a transverse trailing edge as seen in the direction of strip motion. The width of the die slightly exceeds the advance of the strip between cutting operations whereby packages stamped from the strip exhibit obtuse angles but no pointed projections at their forward edges.

Abstract: A numerically controlled nibbling machine including means for controlling the feed rate of the work piece with respect to the work tool of the machine and in which the feed distance or travel of the work piece is limited by a release time in which the work tool is disengaged from the work piece according to a predetermined number of strokes of the work tool per unit of time. The improvement of the invention comprises the provision of means for determining the release time of the work tool in a single stroke of the work tool for any number of strokes of the tool, and means for automatically determining the minimum accelerations and decelerations of the work piece required for travelling the feed distance and for forming a desired feed rate value for the work piece from the determined release time of the work tool and the feeding distance of the work piece per stroke.

Abstract: A numerically controlled nibbling machine in which the feed distance of a workpiece is limited by a release time during which a work tool is disengaged from the workpiece according to a predetermined number of strokes of the work tool per unit of time. The nibbling machine includes drive means for the work tool, means for controlling the feed rate of the workpiece with respect to the work tool, means for determining the release time in a single stroke of the work tool for every number of strokes of the tool per unit of time, and means for automatically determining minimum acceleration and deceleration of the workpiece required for travelling the feed distance and for forming a desired feed rate value for the workpiece from the release time and the feed distance of the workpiece. The improvement of the invention comprises the means for determining the release time further comprising switch means disposed in the path of the work tool for generating a stop command signal for the drive means for the work tool.

Abstract: A stamping or nibbling machine, comprises a workpiece support or means for engaging the workpiece at a spaced location from a punch which reciprocates upwardly and downwardly in respect to a die in order to effect the stamping or nibbling of the workpiece. The support is mounted on a transverse bar which is pivotable about a transverse guide and the guide is carried on a carriage which is pivotable about a longitudinal guide. The workpiece is fed by holding the bar and the carriage against pivotal movement and driving them in the respective longitudinal direction when the punch is lifted off the workpiece. The rate of this feed may be controlled in timed relationship to the movement of the punch so that the feed takes place when the punch is off the workpiece and in a speed of feed which is determined in accordance with the torque acting on the transverse bar and the carriage when they are released for pivotal movement and sensed by associated torque meters.

Abstract: Disclosed is a rolling cut type double side shear wherein an upper side cutting blade and an upper scrap-cutting blade are driven by one crank shaft which has three eccentric sections, so as to increase the production efficiency and to make the shear simple in construction and compact in size.

Abstract: A device for shifting a workpiece on a nibbling machine which includes a rotary eccentric shaft which is rotatable to move a nibbling punch into and out of association with a workpiece, comprises a workpiece holder which is driven by a first motor in one direction, and a second motor in a direction transverse to this direction. A switch control is connected to each motor and includes means for imparting a programmed control of the operation of the motors which is varied in accordance with a sensing of the thickness of the workpiece being operated upon so that the movement may be accomplished when the nibbling punch is not in contact with the workpiece. The apparatus includes a control switch in the form of a switch lug which is mounted for rotation with the eccentric shaft of the nibbling punch and which cooperates with a contactless switch member to cause a turning on and off thereof.

Abstract: Longitudinal shear for rolled sheet metal, particularly heavy plate, which operates perpendicular to the plane of the sheet, whereby the sheet can be gradually divided into two parallel strips by the action of successive partial cuts of a certain length; the sheet is made to move forwardly intermittently by means of drivers located before and after the shears and at least during each cutting stroke kept from shifting by the action of at least one pair of holding rollers located across the cut line.

Abstract: A machine tool which is operable on a workpiece, particularly a stamping or nibbling machine, comprises a movable electrically conductive work tool which is connected in a circuit along with a workpiece. The circuit includes a relay having a switch which is closable to energize a control device such as a drive motor for the feed of the workpiece. The relay is controlled by a contact which is effected when the tool contacts the workpiece to energize the relay and, for example, to open the contact in the control circuit, to stop the control operation. The relay advantageously includes a spring to return this contact switch to a closed position.

Abstract: Battery grid plate castings are trimmed in a two-step operation. Each plate moves flat along a horizontal or inclined path against a first stop bar. One of two trim blades on a reciprocating upper die block then shears flashing from the leading end of the plate during a downward stroke of the die. Then the stop bar raises during the upward stroke of the die, and the plate moves forwardly against a second stop. Upon the next downward die stroke the second trim blade shears flashing from the trailing edge of the plate. During the next upward stroke, the fully trimmed plate moves forwardly onto a stacking device. As the leading end of one plate is trimmed at the first trim station, the trailing end of a preceding plate is trimmed at the second trim station. The second stop is easily moved to different stop positions along the path of travel of the plates to change the distance between such stop and the second trim blade and thereby enable trimming plates of different lengths without changing dies.

Abstract: To eliminate defects such as burr, rollover, sags, scar, etc. from cut-off surfaces of a workpiece in a turret punch press, for instance, a novel height-different punch formed with a lower front edge, an upper rear edge, and an intermediate edge extending between the two edges is used for the punch press. While feeding the workpiece on a horizontal plane in a predetermined direction, the punch is struck by a striker at a first stroke so that the lower front edge thereof cuts off the workpiece partially in cooperation with a die; at the succeeding strokes so that the intermediate edge thereof cuts off the workpiece mincingly and curls refuse within a recess of the die; and at the last stroke so that the upper rear edge thereof cuts curled refuse away from the workpiece to complete a multistroke punching operation.