Abstract: Apparatuses and methods for cutting a sample piece, having a shape and an outer dimension, out of a porous substrate, comprising: a puncher having an outermost dimension at a punch head; a stripping sleeve; a die having an innermost dimension that is larger than the outermost dimension of the punch head; and a fixture that holds the die in a fixed position relative to the puncher and stripping sleeve.

Abstract: A blanking punch which extends from a first portion to a second portion along a blanking direction is provided. The second portion has a cutting edge. An engaging portion is provided/designed between the first portion and the second portion. The engaging portion enables the blanking punch to be removed from a workpiece counter to the blanking direction.

Abstract: A perforation system and method of perforating a flexible work piece. The perforation system includes a punch tool having at least one punch head defining a vertical axis. The punch head has a first shape. A die is positioned along the vertical axis and includes an ejection port having a second shape. The first shape overlaps the second shape to provide for punch-to-die contact that results in a clean cut along a perimeter of the second shape.

Abstract: A pilot assembly and method for metal forming dies has a generally cylindrical pilot with a stripper that strips stock from the pilot when metal forming dies diverge. The pilot assembly is secured to one die member by a fastener by itself or in combination with a window mount. A spring within the pilot assembly contacts the stripper to force the stripper to reciprocate when the dies are pulled apart. Thus, the pilot assembly helps locate the stock within the metal forming die while also having a stripper to help strip the stock from the pilot.

Abstract: A cutting tool includes a pipe, a pressing foot assembly, a spring, and a blade assembly. The pressing foot assembly is slidably sheathed on an end of the pipe. The spring is sheathed on the pipe. An end of the spring abuts against the pipe, and the other end of the spring abuts against the pressing foot assembly. The blade assembly passes through the pipe and the pressing foot assembly in a slidable manner. When the cutting tool moves along a first direction, the pressing foot assembly keeps pressing against an object in a second direction substantially perpendicular to the first direction, such that the blade assembly protrudes from the pressing foot assembly and cuts the object along the first direction.

Abstract: A pilot assembly and method has a cylindrical pilot body with a tapered outer end, a grooved inner end, and a central portion with at least one inwardly curved side wall relief, as well as internally mounted reciprocating ejector pins with outer ends that protrude through holes in the outer body end to strip stock from the pilot. A spring has its outer end mounted in the groove in the outer body end, and an inner end attached to the inner body end in a pre-tensed condition. A cap screw has an enlarged head that has at least a portion thereof fit into the pilot sidewall relief, and a threaded shank that anchors the pilot in an associated die member.

Abstract: A punch tool assembly includes an adjustment subassembly coupled to a canister sidewall of the assembly. The adjustment subassembly includes a punch head, which engages a punch holder, or body, of the punch tool, at a threaded interface, so that rotation of the punch head moves the punch body/holder along a central longitudinal axis of the punch tool assembly. The adjustment subassembly further includes a locking member, which is biased with respect to the punch head, in a first position, where the locking member is engaged with a locking feature of an engagement sidewall of the subassembly, to lock the punch head and prevent rotation thereof. The locking member may be released, to unlock the punch head, by applying a force to an externally accessible actuation interface of a release member of the subassembly, for example, to rotate the actuation interface about the central longitudinal axis.

Abstract: A biasing assembly for a punching device that includes a punch support member adapted to support a punch and including a head portion and a main portion extending from the head portion. The main portion has a recessed surface. A retaining member is coupled to the punch support member with the punch support member being slidable with respect to the retaining member. A coupling member is disposed between the main portion of the punch support member and the retaining member. A portion of the coupling member engages the recessed surface. A biasing member is supported between the head portion of the punch support member and the retaining member. The punch support member is movable between at least first and second positions with respect to the coupling member.

Abstract: A pilot assembly and method has a cylindrical pilot sleeve with an apertured outer end in which a separate pilot pin is received, a grooved inner end, and a central portion with at least one inwardly curved sidewall relief, as well as internally mounted reciprocating ejector pins with outer ends that protrude through holes in the outer body end to strip stock from the pilot pin. A spring has its outer end mounted in the sleeve groove, and an inner end captured in a die pocket in a pretensed condition. A mounting screw has an enlarged head that has at least a portion thereof fit into the pilot sidewall relief, and a threaded shank that anchors the pilot sleeve in the die.

Abstract: A multiple tool is provided for a punching device. The multiple tool includes a driving mechanism, displaceable in a punching direction, with a driving head for driving the driving mechanism by the punching device and a driving body connected to the driving head. The multiple tool further includes a punching tool magazine, which is connected to the driving mechanism, with a guide body, and a plurality of punching tools guided in the guide body. The punching tools in each case have an effective punching length for punching a workpiece to be machined. The driving body cooperates in each case, during punching use, with one of the punching tools to drive it. The multiple tool also includes a mechanical punching length testing mechanism to test the effective punching length of the punching tools.

Abstract: A punch assembly for a hydraulic punch press machine that affords the ability to compensate for punch point metal loss due to resharpening by facilitating accurate repositioning of the punch point relative to an aperture in a stripper plate through which the punch point member projects during a stamping stroke of the punch assembly.

Abstract: The invention generally relates to systems and methods for constructing flooring constructed from a plurality of pieces such that the flooring can include a mosaic pattern. Further, the systems and methods also can be used to produce more complex mosaic structures constructed from at least one mosaic flooring panel. The mosaic flooring panels can be constructed of solid wood and/or other materials.

Abstract: The invention relates to a jaw pair for punching out holes or recesses, preferably in sheet metal parts, the jaw pair being connectable to a device (23) to be operated preferably hydraulically and being designed, for example, as a pivoting jaw pair, wherein a punch (8) is formed on one jaw and a punching opening (6) is formed on the other jaw. To provide an advantageous jaw pair for punching out holes or recesses, preferably in sheet metal parts, it is proposed that a stripper part (10) which is situated outside of an outer contour of the punch (8) in the punching direction is formed in the jaw having the punch (8) and is movable in relation to the punch (8).

Abstract: A two-piece guide pin for metal forming dies includes a guide pin body formed from a cut length of an elongate, solid bar of stock having a cylindrical shape and a hard and smooth finished exterior surface with an outside diameter selected for close reception and reciprocal motion in an associated die bore. An alignment member is formed on a first end of the guide pin body. A guide pin head is formed from a cut length of an elongate, solid bar of stock having an outside diameter that is substantially greater than that of the guide pin body, and is rigidly connected with the second end of the guide pin body in a generally concentric relationship to define an enlarged head that positively limits travel between an associated die shoe and die pad.

Abstract: A die assembly having a guide rod that includes a lower rod which is fixedly placed on a stripper plate which guides a punch for engagement with a lower die and an upper rod which is placed removably on the stripper plate for engagement with an upper die. When punching a material for punching, the upper rod is removed from the stripper plate so as to put the upper plate and the stripper plate in a disconnected state, i.e., so that the stripper plate is made free to move backwards and forwards relative to the lower die by the lower rod. When the material for punching is not punched, the upper rod is attached to the stripper plate so as to put the upper die and the stripper plate in a connected state by the upper rod, so that the stripper plate is held on to the upper die.

Abstract: In the case of a stripping device (3) for use with a cutting tool (1) with a cutting element, in particular a punch (2), for machining a workpiece, in particular a curved metal sheet (6), at least one fastening piece (4, 28, 40) for fastening it to the cutting tool, a spring-elastic element (21) arranged outside the workpiece contact region, a stripping element (15, 34) which comes into contact with the workpiece and surrounds the cutting element (2), and at least one guide element (11, 26, 33) guiding the stripping element (15, 34) being provided, a device for securing against rotation is provided to essentially prevent the stripping element (15) from rotating.

Abstract: A punch unit for a press die is provided for punching a hole in sheet metal. The punch unit includes a piercing punch provided with a sharp projection, a plunger for pressing the piercing punch, a cylinder for supporting the piercing punch and the plunger slidably in a punching direction, and a coil spring for retracting the piercing punch and the plunger. Also disclosed is a press die for punching a hole in sheet metal using the punch unit.

Abstract: A stripper plate mounting apparatus is for mounting a stripper plate (21) in a detachable and replaceable manner on a front end portion of a punch guide (5) into which a punch (17) is fitted movably upward and downward. The apparatus includes: an adaptor (35), for holding the stripper plate (21), detachably provided in a front end portion of the punch guide (5); and lock mechanisms (43), capable of fixing the adaptor (35) to the punch guide (5), provided in multiple locations on the outer periphery of the front end portion thereof. The lock mechanisms (43) each include: a lock piece (53) which is always biased outward in a radial direction by biasing means, and which is engageable with, and detachable from, the lock part (41); and a lock-holding piece (63) for locking and holding the lock piece (53) to an inward position when the lock piece (53) is pressed and moved inward in the radial direction.

Abstract: An upper tool device includes: a punch body having a punch blade at a lower end of the punch body; a punch guide into which the punch body is fitted so as to be movable in vertical direction; an adjustment screw member provided above the punch guide, the adjustment screw member screwed with a screw formed on the punch body; a stripper unit including an urging unit urging the punch body in an upward direction; and a retainer collar including a stopper piece having a tip end disengageably engaged with a stopper formed on the punch body. In the device, the stripper unit is detachably provided in the upper tool device, and the retainer collar is provided between the punch guide and the stripper unit in a manner such that the retainer collar can be relatively rotated against the stripper unit.

Abstract: A punch assembly for a punch press has a punch housing with a punch that is slideably mounted for reciprocation along punch axis within the punch housing and at least one resilient member in the housing for yieldably biasing the punch upwardly in the housing along the punch axis. A punch length adjustment subassembly is provided in the punch housing. The subassembly has a base member that is slideable axially but non-rotatably mounted within the housing and a punch head member having an upper end that is positioned to be struck by a punch ram of a punch press for driving the punch downwardly to an operating position. The punch head is mounted for rotation on the punch axis relative to the base member but is held against axial movement relative to the base member.

Abstract: In a puncher, with respect to a cylindrical cover with a one-end opening hole, a piercing punch is loosely but not movably inserted. A tip end surface of the piercing punch is protruded out from the one-end opening hole of the cover. A cylindrical stripper provided between the cover and the piercing punch is provided detachably from the one-end opening hole. By a biasing member, the stripper is protruded out from the one-end opening hole more than the piercing punch does. When the stripper is pressed in against biasing force of the biasing member, the tip end surface of the piercing punch becomes to protrude out from a through-hole formed at a protruding end of the stripper. A removal-prevention member which prevents the stripper from removing from the cover is provided detachably with respect to the cover.

Abstract: An upper tool device includes: a punch body having a punch blade at a lower end of the punch body; a punch guide into which the punch body is fitted so as to be movable in vertical direction; an adjustment screw member provided above the punch guide, the adjustment screw member screwed with a screw formed on the punch body; a stripper unit including an urging unit urging the punch body in an upward direction; and a retainer collar including a stopper piece having a tip end disengageably engaged with a stopper formed on the punch body. In the device, the stripper unit is detachably provided in the upper tool device, and the retainer collar is provided between the punch guide and the stripper unit in a manner such that the retainer collar can be relatively rotated against the stripper unit.

Abstract: A stamping tool has a stamping punch for forming at least one punched hole in a workpiece. The stamping punch is guided in a guide housing along a stamping displacement movement. The stamping punch has a stamping element and a head element, which is connected with the stamping element by means of a screw connection. A length of the stamping punch between a head front face and a stamping surface, which closes off the stamping element at the front, can be set by means of the screw-in depth of the screw connection. An unlocking body, which is freely accessible from outside of the guide housing can be displaced between a locked position, in which the screw connection is blocked, and a screwing position, in which the screw connection is released. The result is a stamping tool with a simplified length adjustment.

Abstract: A stripper plate mounting apparatus is for mounting a stripper plate (21) in a detachable and replaceable manner on a front end portion of a punch guide (5) into which a punch (17) is fitted movably upward and downward. The apparatus includes: an adaptor (35), for holding the stripper plate (21), detachably provided in a front end portion of the punch guide (5); and lock mechanisms (43), capable of fixing the adaptor (35) to the punch guide (5), provided in multiple locations on the outer periphery of the front end portion thereof. The lock mechanisms (43) each include: a lock piece (53) which is always biased outward in a radial direction by biasing means, and which is engageable with, and detachable from, the lock part (41); and a lock-holding piece (63) for locking and holding the lock piece (53) to an inward position when the lock piece (53) is pressed and moved inward in the radial direction.

Abstract: A biasing assembly for a punching device that includes a punch support member adapted to support a punch and including a head portion and a main portion extending from the head portion. The main portion has a recessed surface. A retaining member is coupled to the punch support member with the punch support member being slidable with respect to the retaining member. A coupling member is disposed between the main portion of the punch support member and the retaining member. A portion of the coupling member engages the recessed surface. A biasing member is supported between the head portion of the punch support member and the retaining member. The punch support member is movable between at least first and second positions with respect to the coupling member.

Abstract: A punch canister includes a punch head with an axial shaft that has a screw thread which is adapted to be connected during use to the screw threads of a punch element that is slideably associated within a stripper bushing. A punch recess adjustment member is rotatably and slideably associated with the punch head. The adjustment member is adapted to the slideably but non-rotatably rotatably connected during operation to the punch element. A resilient retraction member, e.g., a spring, is located between the punch head and the adjustment member for biasing the adjustment member axially downward on the punch head.

Abstract: A punch assembly for a punch press has a punch housing with a punch that is slideably mounted for reciprocation along punch axis within the punch housing and at least one resilient member in the housing for yieldably biasing the punch upwardly in the housing along the punch axis. A punch length adjustment subassembly is provided in the punch housing. The subassembly has a base member that is slideable axially but non-rotatably mounted within the housing and a punch head member having an upper end that is positioned to be struck by a punch ram of a punch press for driving the punch downwardly to an operating position. The punch head is mounted for rotation on the punch axis relative to the base member but is held against axial movement relative to the base member.

Abstract: A multi-tool punch assembly includes one or more types of quick-release-type engagement members for a stripper assembly thereof. Strippers of the stripper assembly may be formed by individual stripper members reversibly coupled to a plate of the stripper assembly; and the stripper assembly may further include an information storage device for storing punch tool information.

Abstract: A punch guide assembly is provided for removably carrying a stripper plate. The punch guide assembly comprises a punch guide and a stripper plate guide movable axially with respect to the punch guide. The stripper plate guide has a locked position wherein the stripper plate is secured to the punch guide assembly and an unlocked position wherein the stripper plate can be readily removed from the punch guide assembly. The stripper plate guide is resiliently biased axially toward its unlocked position yet is restrained against axial movement relative to the punch guide when in its locked position.

Abstract: The invention provides a ball-lock insert assembly adapted to be mounted axially in a mount opening formed in a holder plate having a desired thickness. The ball-lock insert assembly comprises an insert body having an axis and an elongated interior recess extending at an angle relative to this axis. The elongated interior recess is configured to house a resiliently-biased engagement member. The invention also provides retainer assemblies that include ball-lock assemblies, as well as methods of producing retainer assemblies, which methods include providing ball-lock assemblies.

Abstract: A stripper plate supporting assembly has a stripper spool unit including a stripper spool and retaining screw for supporting the stripper plate in a die press in a manner that the stripper plate may be removed from a die set without removing the die set from the press. The stripper spool has a shank with at least one spring biased pin in its flat end. At least one opening or socket is provided in the stripper plate for receiving the pin and preventing the stripper spool from turning with the retaining screw.

Abstract: A stripper plate supporting assembly has a stripper spool unit including a stripper spool and retaining screw for supporting the stripper plate in a die press in a manner that the stripper plate may be removed from a die set without removing the die set from the press. The stripper spool has a shank with at least one spring biased pin in its flat end. At least one opening or socket is provided in the stripper plate for receiving the pin and preventing the stripper spool from turning with the retaining screw.

Abstract: A die block assembly of the present invention includes an upper die (20), an unloading plate (40), a plurality of springs (60), and a plurality of spacer blocks (80). A plurality of receiving holes (30) is defined in the upper die, for receiving the springs. A plurality of rams (34) depends from the upper die, for stamping a workpiece (95). The unloading plate is movably connected under the upper die, and defines a plurality of through holes (42) for accommodating the corresponding rams therein. Each spacer block is a stepped cylinder which includes a base (82) and a protrusion (84) extending upwardly from the base. Each spring abuts the base of the corresponding spacer blocker. A height of each base is slightly greater than a maximize clearance between the upper die and the unloading plate. The spacer blocks prevent spring fragments produced in the stamping process from entering the clearance.

Abstract: A gutter outlet punch for punching an outlet in a rain gutter. The gutter outlet punch has a female die and a male cutting die mating with the female die with the rain gutter positioned therebetween. The male cutting die is attached to a rod. A ratchet permits incremental, one way movement of the male cutting die toward the rain gutter. A ratchet handle permits one-handed operation of the ratchet. A ratchet release allows the male cutting die to be moved away from the rain gutter. An alignment mechanism permits alignment of the rain gutter with the male cutting die in two alternate orthogonal orientations. A housing surrounds the female die and encloses the male cutting die to prevent contact with the operator when the apparatus is not in use. An automatic mechanism ejects the punched-out slug from the apparatus.

Abstract: A punch assembly includes a frame that has a pair of arms forming a deep throat for receiving material to be punched, and a single acting punch and die set held by the outer ends of the arms. The punch is actuated with a lever mounting a swing frame that is supported so that when the punch is to be changed, the swing frame can be moved out the way and the punch removed. The die can also be removed when the swing frame is moved away from its working position. The punch can be actuated through the lever either with a manual handle, or with a power actuator.

Abstract: An apparatus cuts a substrate having first and second portions, each portion having a respectively different level. A first support surface is located at a first level. The first portion of the substrate is supported by the first support surface. A second support surface is located at a second level different from the first level. The second portion of the substrate is supported by the second support surface. The first and second support surfaces are first and second die surfaces, respectively. A punch cuts the substrate between the first support surface and the second support surface. The punch has a V-shaped cross section. A stripper plate has first and second portions. The punch is positioned between the first and second portions of the stripper plate. The first portion of the substrate is clamped between the first portion of the stripper plate and the first die surface. The second portion of the substrate is clamped between the second portion of the stripper plate and the second die surface.

Abstract: A table-top coffee vending machine providing slide-out storage containers for easy filling and removal, a compact fast acting coffee brewing system and a filter paper cutting and storage system. A plurality of storage containers for ground coffee, hot chocolate ingredient and condiment are provided in a rack system that allows the group of containers to be slid out of the machine cabinet on telescoping rails to allow easy filling and removal of the containers. The brewing method includes simultaneously supplying water and coffee grounds to a brewer, stopping the supply of both, allowing the mixture to steep and then beginning to remove the mixture from the brewer while reinitiating the supply of water to the brewer for a sufficient time to supply a complete cup of coffee at a cup station. The filter paper cutter cuts lengths of paper from a continuous supply of filter paper after it is used in the brewer to filter the coffee.

Abstract: An adjustable punch tool assembly has quick release mechanisms which provide for rapid removal and replacement of the stripper plate and punch without the use of tools. The stripper plate quick release mechanism includes slides mounted for axial movement along a front end of the guide. The lower portion of each slide has an opening provided therethrough for receiving a spring-loaded button protruding from the outer surface of the guide. Ball bearings are provided for radial movement between the circumferential groove in the outer edge of the stripper plate and the annular, sloped grooves located along the upper, inner surfaces of the slides.

Abstract: A scrap cutting assembly for use in a reciprocating press in which a cutter is carried on a ram which reciprocates with respect to a fixed base to form and cut material passing through the press includes an exit plate mounted on the press base adjacent the material exit point and a shutter spring and backing spring attached to the exit plate. The exit plate has a tapered bottom surface which tapers upwardly toward the ram and the shutter spring and backing spring are attached to and lie along the bottom tapered surface with one end of the shutter spring extending beyond the end of the exit plate and slightly above the top surface thereof so as to support the material as it is fed through the press. The shutter spring is depressed by the cutter as the ram and cutter descend to sever the material.

Abstract: A stripper holder for holding a stripper plate conforms with the deformation of a die plate. A pressing force applied to the stripper plate and is greater than an elastic limit of a metal tape to be punched, and less than a pressing deformation or breakage force of the metal tape. The stripper holder may also be flexible, or such that the metal tape is pressed at two different positions for one punching position by two different pressing forces.

Abstract: The cutting device with movable punch is of the type which has a body placed within a seat (2) which is formed in the structure (3) of the machine, and also a fixed die (4), a movable upright (5) and an elastic element (6). In particular the body is constituted by a punch placed in the central position within the seat (2), a shaped element (8) coaxial with the punch and a blank-holder (9) which is integral with the terminal lower part of the shaped element (8).

Abstract: A scrap cutting assembly for use in a reciprocating press in which a cutter is carried on a ram which reciprocates with respect to a fixed base to form and cut material passing through the press includes an exit plate mounted on the press base adjacent the material exit point and a shutter spring and backing spring attached to the exit plate. The exit plate has a tapered bottom surface which tapers upwardly toward the ram and the shutter spring and backing spring are attached to and lie along the bottom tapered surface with one end of the shutter spring extending beyond the end of the exit plate and slightly above the top surface thereof so as to support the material as it is fed through the press. The shutter spring is depressed by the cutter as the ram and cutter descend to sever the material.

Abstract: A punch unit includes a punch driver having a punch connected to it. A guide bushing receives the punch for guiding its axial displacement. A compression spring urges the punch driver rearwardly, away from the guide bushing. An intermediate member located between the guide bushing and the compression spring includes a collar, a holding member positioned concentrically inside the collar and releasable retaining means. The collar is rotatable relative to the holding member such that rotation in a first direction moves the retaining means into a locked position in which the guide bushing is prevented from moving longitudinally out of said holding member and rotation of the collar in a second direction opposite to the first direction moves the retaining means into an unlocked position in which the guide bushing is removable from the holding member.

Abstract: A punch unit allows an adjustable length adjustment of the punch by disengaging projection-seat means which connect the housing and the guide bushing and then rotating the guide bushing relative to the housing. Additionally, the housing has mutually engaging housing top and bottom parts that have engaging fingers and corresponding grooves that cooperate during punching. The connection between the housing and guide bushing includes a C-ring, attached to the housing, having protrusions which are biased to engage a groove located on the guide bushing.

Abstract: The punch unit comprises a punch driver connected with a punch which on its back end has a base. Furthermore, safeguarding members which keep the punch and the punch driver free of relative rotation during the stroke of the punch, and a pre-loaded compression spring which during the stroke of the punch can be compressed between the base and a guide bushing receiving the punch so that it cannot be rotated, but is axially displaceable, are part of it. To obtain a simpler and quicker assembly and disassembly of the punch it is provided that the pressure spring is maintained under pre-load in the guide bushing which is embodied as one or several pieces. A catch releasably supported on the rear end of the guide bushing and releasably engaging a recess, open toward the back, in the circumferential surface of the punch driver head prevents the punch driver head from jumping toward the back out of the guide bushing.

Abstract: A punching tool for a press, includes a punch guide having a stripper plate at a lower end thereof. A punch body is formed with a blade portion at a lower end thereof and disposed within the punch guide for up and down movement. A punch driver includes a piston rod fixed to the punch body. A gas spring section has a gas cylinder, the piston rod of the punch driver extending through the gas cylinder for up and down movement. A high pressure gas is contained in the gas cylinder to bias the punch driver upward, and an annular elastic member is interposed between an upper surface of the punch guide and a lower surface of the gas cylinder of the gas spring section to absorb shock generated when the stripper plate attached to the punch guide collides against work during a punching process. The punching tool can reduce noise generated during punching processing and further can prevent a punching mark (scar) from being formed on the surface of the punched work.

Abstract: In an upper tool, a stripper plate (35) is disposed movably up and down at a lower end portion (13a) of a punch guide (13) for housing a punch (27) also movably up and down, via a shock damping member (33). Further, the shock damping member (33) is formed into an annular body disposed so as to enclose an annular gap (X) formed between the lower end portion (13a) of the punch guide (13) and the upper surface (65) of the stripper plate (35). The upper tool can reduce noise sound generated during punching processing, and further prevent chips produced during punching processing from adhering onto the workpiece and the shock damping member, thus protecting the workpiece from being scratched by the chips and further improving the life time of the shock damping member.

Abstract: A combined hole puncher and reinforcer is provided with a punch control mechanism for detecting the presence of a flat sheet of material in registration with the punching device so as to provide a mechanical interlock for disabling the punching device in the absence of such a flat sheet in registration therewith, unless the adhesive tape feed mechanism is disabled. Also, a tape retainer or cover is hinged for rotation relative a mounting base and carries with it a depression finger and an idler roller. This not only provides clear access to the tape cavity, and enhances tractional engagement of the tape upon closure of the cover, but also avoids the necessity for threading the tape beneath an idler roller. The tape feed mechanism employs no gears, but utilizes a single ratchet wheel and pawl to advance the tape along its longitudinal path into registration with the punch and press assembly.

Abstract: The punch unit is comprised of a punch driver connected with a punch and has a base at its rear end. Securing members keep the punch and the punch driver free of relative rotation during the stroke of the punch. A pre-loaded compression spring can be compressed between the base and a guide bushing receiving the punch, so that it cannot be rotated during the stroke of the punch, but is axially displaceable.

Abstract: A cutting tool includes a pipe, a pressing foot assembly, a spring, and a blade assembly. The pressing foot assembly is slidably sheathed on an end of the pipe. The spring is sheathed on the pipe. An end of the spring abuts against the pipe, and the other end of the spring abuts against the pressing foot assembly. The blade assembly passes through the pipe and the pressing foot assembly in a slidable manner. When the cutting tool moves along a first direction, the pressing foot assembly keeps pressing against an object in a second direction substantially perpendicular to the first direction, such that the blade assembly protrudes from the pressing foot assembly and cuts the object along the first direction.