Abstract:
A hole-saw assembly including a hole-saw having at one end a plurality of cutting teeth and at the other end two shafts. The assembly includes a mandrel coaxially aligned with said hole-saw and including a body having two bores therethrough coaxially aligned with said shafts. An annulus located on top of the body is coaxially aligned with said mandrel and hole saw and includes two holes, the annulus rotatable around its longitudinal axis from a first to a second position. In the first position the annulus holes are aligned with the bores and shafts allowing the shafts to be freely insertable and removable and in the second position the holes are misaligned to lock the shafts to the annulus. Such an arrangement allows the hole-saw and the mandrel to be easily and quickly mountable and demountable.
Abstract:
The invention relates to a blade holder with a shock absorber for a device for longitudinally cutting a material strip (10), comprising a base body (2) that can be fixed to a blade carrying rail (M) of the device, a blade holder (3; 23) that can move relative to the base body (2) and in which a circular cutter (8; 22) is rotatably mounted, said cutter being associated with an actuating drive (4; 24) by means of which the circular cutter (8; 22) can be moved from a resting position to a working position and pressed against an assigned rotatable counter blade (9; 28) of the device. The invention also comprises a shock absorber (11) operating between the actuating drive (4; 24) and the circular cutter (8; 22), said absorber exhibiting high resilience when forces are exerted in the direction of pressure and low resilience when forces are exerted in the direction opposite to the direction of pressure.
Abstract:
A steel rule die for cutting cloth and synthetic materials. The cutting die includes a primary substrate (1) and a plurality of cutting units (2-6) that are removably attachable to the substrate. The cutting units (2-6) include lengths of steel rule (8) which are attached to secondary substrates (7) to form cutting cavities. Studs (9) mounted to the primary substrate (1) interface with teardrop-shaped holes (11) in the secondary substrates (7) to restrain them against motion perpendicular to the primary substrate's (1) surface while permitting lateral motion. Adjustable securing rails (14-15) positioned along the peripheries of the primary substrate (1) are moved toward the fixed securing rails (12-13) to restrain the secondary substrates against lateral and longitudinal motion. Foam (21) can be disposed between the cutting units (2-6) to aid in the removal of scrap material.
Abstract:
A fixing device is disclosed for saw blades which can be fixed to a reciprocating rod, in particular of motor-driven handsaws and sabre saws. The saw blade (8) lies between a clamping holder (1) and a movable clamping part (2) which is wedge-shaped at its side away from the saw blade and can be moved by means of a spring (3) into its rest position by a wedge (4), the wedge-shaped side of which lies against the wedge-shaped side of the clamping part (2), pressing the clamping part (2) against the saw blade (8).
Abstract:
A ball lock punch and die retainer comprises a single piece body (10) of high strength through hardened tool steel having a relieved (30) flat bottomed (24) borehole (22) for the punch. The exterior sidewall (40) of the retainer opposite the end having the punch borehole (22) is substantially half-cylindrical.
Abstract:
An improved punch retainer (20) disclosed in which a backing plate (24) extends over a relatively large surface area to dissipate force from a punch (64). A punch retainer body (22) and the backing plate are permanently connected to each other and include passages (38, 40, 42, 44, and 46) which are finally ground after the two have been permanently connected. With this arrangement, it is ensured that passages within the backing plate and retainer body are all properly aligned during formation of the punch retainer. Since the backing plate dissipates force over a relatively large surface area, the punch retainer may be used in heavier applications than prior art punch retainers. A spring passage (56) is closed off by a seal (79) received in the backing plate, allowing the use of standard springs (82).
Abstract:
A bracket (84, 85) for properly locating a lower blanking tool with respect to a pull-out frame during a blanking operation in a carton die cutting machine. The bracket is mounted in the inner side of a side rail (2, 3) for the lower blanking tool and includes a projecting spring (104) member releasably engageable within a groove (110) formed in the top side of a corresponding cross rail (82) of the pull-out frame. The bracket also includes a projecting datum (101) member engageable with the inner side of the pull-out frame's cross rail to aid in positioning the lower blanking tool on the pull-out frame.
Abstract:
A blade mounting arrangement for mounting a cut off blade (12) in a roll (14) of a shear cut type, cut-off system (10) includes an elastomeric member (30) interposed between the cut off blade (12) and a mounting surface of the roll (14). The elastomeric member (30) is configured and arranged to provide varying resistance to compressive loading, the resistance varying along a portion of the elastomeric member (30). The elastomeric member (30) includes a first resistance portion (51) which engages the cut off blade (12) near the cut off blade's (12) fixed inner portion (12a), and a second resistance portion (52) which underlies the cut off blade (12) near its free edge portion (12b). A third resistance portion (53) is disposed intermediate the first (51) and second (52) portions in joining the first portion (51) to the second portion (52) but configured so as to be maintained out of engagement with the cutt off blade (12).
Abstract:
A punch guide sleeve and stripper plate assembly useable with a punch set of the type having a punch disposed within the guide sleeve (16) and adapted to be reciprocally advanced through an opening of the stripper plate (12) attached to one end of the guide sleeve (16) by the ram of a punch press. The stripper plate assembly includes a rotatable stripper plate cap (20) which may be manually rotated with respect to the guide sleeve (16) from a locked to an unlocked position to secure and release the stripper plate (12) through tightening and loosening a retaining wire (18) onto and away from the stripper plate (12). The retaining wire has two ends (19, 21) that are attached to the stripper plate cap and the guide sleeve. When these two ends are drawn together in the locked position, the arcuate wire (18) engages with the stripper plate (12).