Abstract: A method, a cutting device and an apparatus wherein, at cusp-shaped recesses obtained by die cutting on a ribbon in order to obtain pouches with rounded corners, the ribbon is cut transversely by means of at least two strokes of a blade. A relative translation is performed, between the first stroke and the second stroke, between the cutting plane and the ribbon substantially along a feeding direction of the ribbon, so as to level with the second stroke any cutting defects of the first stroke in the region of the recess.

Abstract: A protective element includes: a fuse element cuttable by energization in a first direction; a slider made of an insulating material, including: a plate-shaped portion extending in the first direction; a shielding portion erected in a second direction on the plate-shaped portion, having a shielding-portion through hole penetrating the shielding portion; and a case made of an insulating material, including a housing portion which houses a slider and a portion of the fuse element. The housing portion includes: a shielding-portion housing space which houses the shielding portion such that the shielding portion is movable in the second direction; and a plate-shaped-portion moving space which houses the plate-shaped portion such that the plate-shaped portion is movable in the second direction Prior to the fuse element being cut, the slider and the fuse element are housed such that the fuse element is inserted into the shielding-portion through hole.

Abstract: A method and a set-up apparatus for a tool for punching or forming sheet-form materials having a punch holder into which a punch of the tool is insertable and a die holder into which a die of the tool or a die carrier holding the die is insertable. The punch holder and the die holder are movable towards one another by a guide. The punch holder is transferred along the guide into a measuring position in which the punch rests on a surface of a measurement object which rests on the die. A distance of the punch holder is measured from a zero point of the die holder and a distance of the measurement object from the zero point. An evaluation device outputs a punch length of the punch and a die height of the die or a die height of the die arranged in the die carrier.

Abstract: The present invention relates to a device for selective separating electronic components from a frame with electronic components including at least two press parts; drive means for moving the press parts; a guide for guiding frames between the press parts; a plurality of punches in a first press part and a plurality of openings in a second press part. The invention also provides a system for in-line selective separating electronic components from a frame with electronic components and a method for selective separating electronic components from a frame with electronic components.

Abstract: The disclosure pertains to a fine blanking press comprising a first press unit comprising a first press drive for driving the first press unit in a first driving movement during a fine blanking process step, and a second press unit wherein the second press unit is driven in a second driving movement at least partially during the first driving movement of the first press unit, and wherein a force control unit exerts a counter force against a force exerted by the first press unit during its first driving movement, and wherein the force control unit comprises at least one sensor and a controller operative to receive measuring data collected by the at least one sensor, and wherein the controller is configured to carry out a closed loop control on basis of the received measuring data. The disclosure further pertains to a method for operating a fine blanking press.

Abstract: A mechanical breaking and fusing combined multi-fracture excitation fuse includes a shell, wherein a cavity is formed in the shell, and at least one conductor penetrates through the shell and penetrates through the cavity; at least one excitation device and one breaking device are arranged in the cavity of the shell; the excitation device can receive an external excitation signal to drive the breaking device to act to break a conductor corresponding thereof to form at least two fractures on the conductor, at least one fuse is connected in parallel onto the conductor. The melt is connected in parallel with at least one fracture, and the melt is connected in series with at least one fracture.

Abstract: A table shear may include a clamp and a shearing mechanism, the shearing mechanism supported by the clamp. The shearing mechanism may include a fixed lower shear blade, a lower shear blade backup plate supporting the fixed lower shear blade, a moveable upper shear blade and a shear compression cylinder. The shear compression cylinder abuts the movable upper shear blade.

Abstract: A table shear may include a clamp and a shearing mechanism, the shearing mechanism supported by the clamp. The shearing mechanism may include a fixed lower shear blade, a lower shear blade backup plate supporting the fixed lower shear blade, a moveable upper shear blade and a shear compression cylinder. The shear compression cylinder abuts the movable upper shear blade.

Abstract: An electric circuit breaker device includes a cylindrical space penetrating from a first end to a second end of a housing made of a synthetic resin, an igniter, a projectile made of a synthetic resin, and a conductor piece forming part of an electric circuit, which are arranged axially in this order from the first end of the housing. The conductor piece is a plate piece comprising of connection sections at both ends thereof and a cutting section as an intermediate portion. The projectile is disposed to face the surface of the cutting section of the conductor piece in the axial direction of the housing. A cylinder made of a metal for reinforcing the housing is disposed between the projectile and an inner wall surface of the housing; the projectile has a constricted part fitted with an O-ring abutting against an inner periphery of the cylinder.

Abstract: The present invention provides an electric circuit breaker device, wherein, in a cylindrical space penetrating from a first end to a second end of a housing made of a synthetic resin, an igniter, a projectile made of a synthetic resin, and a conductor piece forming part of an electric circuit are arranged axially in this order from the first end of the housing, and the device has an insulating space for receiving a cut portion of the conductor piece between the second end of the housing and the conductor piece, wherein the conductor piece is a plate piece composed of connection sections at both ends thereof and a cutting section as an intermediate portion, and is disposed so that the cutting section has a surface perpendicular to the axial direction of the housing; the projectile is disposed to face the surface of the cutting section of the conductor piece in the axial direction of the housing; and a cylinder made of a metal for reinforcing the housing is disposed between the projectile and an inner wall s

Abstract: The present invention relates to an apparatus for cutting vegetables of different sizes and densities in a quick, safe and efficient manner The apparatus embodied herein provides an automated cutting process requiring only one operator who need not apply any physical exertion during the cutting process, and need not place his or her hands in the vicinity of the blade, as is necessary in conventional cutting methods using saws, guillotines and the like. The speed of the cutting blade bearing down on the vegetable is adjustable by varying the air pressure to a cylinder which actuates movement of the blade. This is advantageous in that the speed of the blade can be changed to suit particular sizes and densities of vegetable. The use of pneumatics further provides an extremely swift blade motion which reduces the likelihood of bruising to the vegetable as well as inaccurate portioning. Furthermore, when using such equipment, the quality of the cut will not be impaired over significant periods of use.

Abstract: A powered stem-cutting apparatus includes a top plate having a hole positioned therein. An actuation device is positioned proximate to the top plate, wherein the actuation device is activated by an activation device to move an actuator. A blade is connected to the actuator, wherein the blade is movable along a cutting path, wherein the cutting path intersects an axis of the hole.

Abstract: A glass plate cutting machine 1 includes a cutter wheel 4 for forming a cut line 3 on a glass plate 2; a moving means 5 for moving the cutter wheel 4 along a cut line 3a which has been preset and is to be formed on the glass plate 2; a resiliently pressing device 6 for resiliently pressing the cutter wheel 4 against the glass plate 2; and a control unit 7 for controlling the resiliently pressing device 6 so as to alternately change over the intensity of a resiliently pressing force of that cutter wheel 4 with respect to the glass plate 2 in the movement of the cutter wheel 4 by the moving means 5.

Abstract: In various embodiments, a surgical console may include a pneumatic valve to drive a pneumatic tool coupled to the surgical console. The console may further include a controller operable to control and adjust the valve open/close cycle times according to a valve duty cycle. The valve may switch between ports (valve open time for a first port and valve close time for a second port) such that a total valve time may approximately equal the valve open time plus the valve close time. The valve duty cycle may indicate a percentage of the total valve time for the controller to signal the valve to open and may include an adjustment that corresponds to a signal timing of the open and/or closed valve positions that will result in open and closed operating pressures above a predetermined threshold.

Abstract: A tool and a method are disclosed for cutting coils in a dynamoelectric machine. In an embodiment, the tool includes a blade having a cutting edge on a distal end thereof. The blade is operably connected on a proximal end thereof to a double acting hydraulic cylinder. The tool further includes at least one guide arm coupled to and extending longitudinally in a distal direction from the double acting hydraulic cylinder, wherein the at least one guide arm is disposed alongside the blade and extends parallel to a path of the blade.

Abstract: A cutting device includes a bottom plate, a platform located on the bottom plate for holding a workpiece, a first support plate connected to the support plate and located above the bottom plate, a first telescopic cylinder having a first piston, a blade connected to the first piston, a first medium providing device configured to provide medium, a first switch including a gateway A1 connected to a first lower cavity of the first telescopic cylinder, a gateway B1 opened to the outside, a gateway P1 connected to the first medium providing device, a first sensor including a gateway A2 opened to the outside, a gateway B2 communicating with a first upper cavity of the first telescopic cylinder, and a gateway P2 connected to the gateway B1.

Abstract: A cutter includes a blade and a case. A harness is placed across a second hole. A second inner cylinder member has a back-side inner wall extending from the harness toward a first inner cylinder member, for guiding a cutting portion to the harness.

Abstract: A cutter includes a blade which has a cutting portion. The cutting portion includes a first edge portion at a front end of the blade in a forward direction, and a second edge portion different in height from the first edge portion by a height.

Abstract: A cutter includes a stopper with which a blade after cutting a harness with a cutting portion collides and stops. The blade includes a flexible guide portion which protrudes further in a forward direction of the blade than the cutting portion.

Abstract: A cutter includes a blade member configured to cut a current-carrying member by an edge portion, a gas generator configured to move the blade member toward the current-carrying member, a receiving member arranged on a side opposite to the blade member relative to the current-carrying member and defining a receiving surface for receiving the current-carrying member upon cutting thereof, and a stopper configured to restrict forward movement of the blade member such that the blade member stops at a predetermined position. An insulating protective film softer than the current-carrying member is formed on a surface of the edge portion, inner surfaces of guide portions formed in a front end portion of the blade member, and the receiving surface of the receiving member.

Abstract: Machine for punching holes through a longitudinal sheet or wheel rim passing in a horizontal direction, using punches, and also for cutting said sheet to obtain sheet portions or pieces. The machine is characterized in that the punching and cutting operations are performed by a single power unit, such as an oleohydraulic cylinder (2) secured to a frame and positioned at the top in a vertical direction. The shaft of said cylinder is connected to a cutter-holding carriage (4) which, as it moves downwards to cut the sheet (10), brings with it an upper support means (19) that forms part of a punching device (6), the punches of which are guided on a lower front carriage (8) that also forms part of the punching device (6).

Abstract: A release space (100) is formed in a holding member (47) so as to be disconnected from a back pressure chamber (49) before a blade member (30) cuts a current-carrying member (12), and communicate with the back pressure chamber (49) after the blade member (30) has cut the current-carrying member (12).

Abstract: A stamping press includes a fixed lower body with a machine bed, a mobile upper body or press carriage, a lower cushion which constitutes a mobile body in respect of the lower fixed body, an upper cushion which constitutes a mobile body in respect of the upper mobile body, a die-cutting assembly formed of the top part of the die-cutting assembly integral to the upper mobile body, and a bottom part of the die-cutting assembly integral to the machine bed, and a guiding device ( )for the top part of the die-cutting assembly in respect of the bottom part of the die-cutting assembly, the lower cushion including a single hydraulic cylinder with an annular section fitted in the central part of the machine bed, hollow in the centre, this central part constituting the zone for removal of scrap or cuttings produced by the die-cutting performed in the stamping process.

Abstract: A glass plate cutting machine 1 includes a cutter wheel 4 for forming a cut line 3 on a glass plate 2; a moving means 5 for moving the cutter wheel 4 along a cut line 3a which has been preset and is to be formed on the glass plate 2; a resiliently pressing device 6 for resiliently pressing the cutter wheel 4 against the glass plate 2; and a control unit 7 for controlling the resiliently pressing device 6 so as to alternately change over the intensity of a resiliently pressing force of that cutter wheel 4 with respect to the glass plate 2 in the movement of the cutter wheel 4 by the moving means 5.

Abstract: An apparatus for cutting off concrete, wooden, and/or metal piles, casing, conductor pipe and other metal tubulars, uses a metal frame and a metal blade linearly moveable within the frame, the blade being hydraulically and/or pneumatically driven to puncture and then slice and split through the metal being cut off, the cutting surface of the blade having a removable, centralized puncture point located essentially at the projected intersection between two concave cutting surfaces.

Abstract: A system for providing pneumatic power to a vitrector includes first and second output ports, an output valve, an isolation valve, and three manifolds. The first and second output ports provide pressurized gas to power a vitrector. The output valve alternately provides pressurized gas to the first and second output ports. The isolation valve provides pressurized gas to the output valve. Two manifolds fluidly connect the output valve to the first and second output ports. A third manifold fluidly connects the isolation valve to the output valve. When the isolation valve provides pressurized gas to the output valve, the output valve operates at a high rate of speed to alternately provide pressurized gas to the first and second output ports thereby powering the vitrector.

Abstract: A cutting apparatus is disclosed and which includes a cutter knife which is reciprocally moveable along a path of travel, a track member mounted adjacent to the cutter knife, and which mechanically cooperates with the cutter knife so as to define, at least in part, a first non-cutting position, and the second, cutting position for the cutter knife, and a magnet mounted on the track member and which releasably magnetically restrains the cutter knife when the cutter knife is in either of the first non-cutting position, or the second, cutting position.

Abstract: A rod manipulator including power-base and various assemblies, interchangeably attaching to the base. The power-base is composed of a pneumatic cylinder and piston which affects the function of various assemblies. The piston moves the central component of an assembly toward the fixed portion of that assembly. A bending assembly containing mobile pivots around which a surgical metal rod can be bent. A cutting assembly containing blades in central and fixed portions between which a surgical metal rod can be cut. The distal end of the cut rod is retained by replaceable, sterilizable, eject-grips during and immediately after the cutting operation. The general object of the invention is to provide an improved surgical rod cutter and surgical rod bender, capable of performing both tasks with one power source, requires one-person operation, eliminates the need for significant muscular forces and eliminates the opportunity for an unsafe projectile in the operating room.

Abstract: A cutting apparatus of the present invention mainly includes a cylinder, a cutting assembly and a valve assembly. The valve assembly is connected to the cylinder so as to control action of the cylinder. The cutting assembly is connected to the cylinder, so that the cutting assembly can be driven to cutting plates or boards. The valve assembly has a first switch and a second switch. When both of the first switch and the second switch are turned on, the cutting assembly is driven to move for cutting. When one of the first switch and the second switch is turned off, the cutting assembly is driven to return its initial position. As such, the first switch is provided for ordinary operation. The second switch is taken as an emergency switch for particular situation so as to avoid accident.

Abstract: A hydraulically powered cutting tool includes a blade holder for securing a piece of cutting material during the shearing process. The assembly includes a tool head having a receiving area for the blade holder. A powered actuator is attached to the tool head adjacent the receiving area for actuating a moving blade. The moving blade includes a first end attached to the powered actuator and a second end with a cutting surface facing a fixed blade. The blade holder is attached to the tool head and includes an arcuate bottom surface adjacent the receiving area at a first end and a sleeve at a second end. The fixed cutting blade is received in the sleeve and includes a cutting surface disposed facing the moving blade.

Abstract: In one exemplary embodiment of the invention, the device includes an outer housing. The outer housing includes an internal cavity, at least one opening and a distal end. The distal end is configured to be near the construction material during use. The device also includes an internal piston that includes a tip. The internal piston is received within the internal cavity and is configured for reciprocal motion within the outer housing. The device further includes a handle coupled to the outer housing and a trigger mechanism. The trigger mechanism is configured to release pressurized gas within a blast chamber. The pressurized gas drives the internal piston through the opening in the outer housing to produce a hole in the construction material.

Abstract: A punch press provided with a punch and die set taking-out/taking-in apparatus 291; a punch taking-out/taking-in arm 367 for performing taking-out/taking-in of a punch P; and a die taking-out/taking-in arm 369 for performing taking-out/taking-in of a die D, wherein taking-out/taking-in of many punches P, dies D accommodated in a punch and die set accommodating portion 282 of a rack 283 is performed by pivoting a punch holding arm 279 which holds a punch P and a die holding arm 281 which holds a die D in a punch and die set exchanging apparatus 23 forward or backward; and delivery of a die is performed between the punch and die set taking-out/taking-in apparatus 291 and the punch and die set exchanging apparatus 23.

Abstract: A releasable tether retention system is provided. The system includes a housing, a cutting member slidably coupled to the housing, and a tether holder secured to the tether for attaching a tether to the housing. At least a first portion of the tether holder is coupled to the housing along a path of sliding motion of the cutting member so as to enable the cutting member to at least partially sever the tether holder during sliding motion of the cutting member. A vehicle occupant protection system and an airbag module including the releasable tether retention system are also disclosed.

Abstract: A device for finely cutting workpieces from a material, which includes a press plate which is subjected to the pressure of a knife-edged ring cylinder consisting of a knife-edged ring and a clipping punch which is guided in the pressing plate, and associated with a blanking die with a counter holder (ejector) on a tappet, whereby the tappet is placed against at least one compensation cylinder which is hydraulically connect to the knife-edged ring cylinder.

Abstract: A blade (11), which includes a cutting portion (21) and an insulating portion (22), is used as a blade (11) of a cutting apparatus (10). The cutting portion (21) is made of a metal, and has a blade portion. The insulating portion (22) is formed by an insulating member, and forms a part that adjoins the blade portion in a direction opposite to an advance direction of the blade (11). The cutting apparatus (10) is configured so that, when cutting a current-carrying member (15), the blade (11) advances until the insulating portion (22) contacts cut faces of the current-carrying member (15) after the cutting portion (21) cuts the current-carrying member (15).

Abstract: Cutting device (1) for lengthwise cutting of a moving, flexible web (2) containing an initial knife pulley (4), a second knife pulley (6) and a cylinder (11) with a moving piston (13), said second knife pulley being adjustable relative to the first knife pulley subject to the compressive force from the piston to bring the edge of the second knife pulley (10) to work with the edge of the first knife pulley (9). According to the invention, the cutting device has a slide (14) that is situated between the second knife pulley and the cylinder, said slide being adjustable in the axial direction of the second knife pulley and connected to the piston to follow its movement, and in which slide the second knife pulley has been rotatively stored.

Abstract: A fluid distributor apparatus includes a body having distribution ports (35, 37, 39, 62, 63); a spool adapted for controlling said distribution ports and mounted sliding in a first sliding seat obtained in said body and communicating with said distribution ports; a copying-member mounted sliding and sealed in a second seat obtained in said spool; and supply means for a controlled supply of said fluid to said second seat, so that said copying-member slides in a controlled way. Said supply means include also chamber means containing said fluid and communicating with said second seat, and pushing means of said fluid mounted sliding and sealed in said chamber means.

Abstract: The present invention relates to an apparatus for cutting vegetables of different sizes and densities in a quick, safe and efficient manner The apparatus embodied herein provides an automated cutting process requiring only one operator who need not apply any physical exertion during the cutting process, and need not place his or her hands in the vicinity of the blade, as is necessary in conventional cutting methods using saws, guillotines and the like. The speed of the cutting blade bearing down on the vegetable is adjustable by varying the air pressure to a cylinder which actuates movement of the blade. This is advantageous in that the speed of the blade can be changed to suit particular sizes and densities of vegetable. The use of pneumatics further provides an extremely swift blade motion which reduces the likelihood of bruising to the vegetable as well as inaccurate portioning. Furthermore, when using such equipment, the quality of the cut will not be impaired over significant periods of use.

Abstract: A cutter arrangement including a crush cutter holder with a pneumatically actuatable piston and a fork-shaped blade holder supported thereby. A crush cutter is disposed in a positively engaging manner between the arms of the fork. For exchange purposes, the crush cutter can be displaced and moved out of the fork. A lower blade is associated with the crush cutter. A lever is disposed on the housing of the crush cutter holder so as to be pivotable about a bearing point. The lever is pivotable out of a release position for the crush cutter into a first contact position against the outer periphery of the crush cutter, and furthermore into a displacement position for the crush cutter leading to release of the crush cutter from the fork.

Abstract: An apparatus for slitting a web moving along a path comprises a mounting block adapted to be fixed at a location adjacent to the web path. A guard assembly includes a guard plate secured to rod members projecting from the mounting block. A blade guide is mounted on and shiftable along the rod members, and at least one blade is carried by the blade guide. An actuator serves to shift the blade guide along the rod members between an extended position at which the blade projects in a slitting position beyond the guard plate and into the web path, and a retracted position at which the blade is withdrawn from its slitting position and from the web path to a position where it is shielded from exposure by the guard plate.

Abstract: An embodiment of the present invention relates to a tool for clamping together pivotable parts under bias relative to each other, using a swing bolt construction for mounting the pivotable parts on a fork of a holder, the swing bolt construction including: a swing bolt with a widened part provided on a first outer end and provided on the other outer end with first fastening device; a nut provided with second fastening device for fastening the nut to the first fastening device on said other end of the swing bolt; wherein the widened part of the swing bolt and the nut are embodied so as to lie during use against the pivotable parts for clamping thereof under the required bias.

Abstract: A punch assembly for a hydroforming die includes a servo motor, a ball screw connected to the servo motor, and a ball nut disposed about the ball screw for movement along the ball screw. The punch assembly also includes a link mechanism connected to the ball nut and a plunger operatively connected to the link mechanism and movable relative to the hydroforming die to allow fluid within a tubular member to force a wall portion of the tubular member outward against the plunger and be sheared by the hydroforming die to produce an opening in the tubular member.

Abstract: A clamping arrangement is provided for a slitter and/or hole punch for a plastic film processing machine. The punch can be unitarily formed on a base member, and mounted on a block that is affixed to the end of an actuator rod. A double-acting pneumatic cylinder actuator serves as the reciprocating mechanism for the punch. A hold-down clamping mechanism includes an apertured clamping plate and frame that surrounds the punch and is spring-driven using a compression spring mounted over the shaft or rod of the actuator. The compression spring compresses on the upstroke, and assists the cylinder on the downstroke.

Abstract: A chamfer cutting device for cuffing packaging materials comprises a die and a knife part which has a plurality of knives. The die can be moved toward the knife part in order to carry out a cut. The knives are arranged individually in the knife part in a force-dependent manner in such a way that their position with respect to the tool plate varies in a defined way as a function of the force produced by contact with the packaging material or the die. In the event of contact between the knife and the die, a force acts on the knife which does not exceed a predefined maximum force. The chamfer cutting device has the advantage that the die can be guided right up to the knives.

Abstract: In a perforating apparatus which has a holder to which a perforating blade can be fastened, the perforation is produced via the movement of a piston by the piston pressing against an air cushion, which in turn transmits this pressure to a perforating piston which presses the perforating blade downward. A positioning device which directly varies the position of the piston unit relative to the housing surface is provided for the zero setting of the piston.

Abstract: A load cell deflasher for the punch and die deflash processing of product from an extrusion includes a load cell pressure transducer interconnected with a punch to sense pressure measurements of the punch against the extrusion at the die and communicate the measurements to a programmable logic controller that controls the extension and retraction of the punch to the die and the structure accommodating pre-punch alignment of the extrusion to the die. The pressure measurements are logged in a trending database of the programmable logic controller. If a pressure measurement exceeds a threshold value, to programmable logic controller can command instruct a positioning actuator of the punch to abort its punch stroke prior to completion.

Abstract: The powered pipe cutter and the pipe flaring tool both have a piston slidably mounted in a cylinder. The cylinder has a top end closed by a top end plug. A crimped cartridge bore in the top end plug communicates with a gas expansion chamber. A bolt and firing pin assembly are attached to the cylinder top end. The pipe cutter includes a shear housing with a pipe passage connected to the rod end of the cylinder. A shear plate is connected to the piston and moves with the piston to shear pipes. The pipe flaring tool includes a pipe clamp assembly with a pipe passage and a female flaring surface connected to the cylinder rod end. A male flaring surface on the piston cooperates with the female flaring surface to flare pipe ends.

Abstract: A drain line re-perforator device for punching holes in clogged drain pipe sections in a sewage disposal system is provided. The re-perforator device includes an outer cylindrically-shaped housing member and a dual-actuating ram assembly disposed concentrically within the outer housing member. Three equally spaced-apart angled bracket members are mounted hingedly on the peripheral surface of the outer housing member and includes a punch bit positioned for outward radial movement. The ram assembly is formed of a cylinder and a piston rod. The piston rod is moved in a reciprocal motion from a retracted position to a an extended position so as to cause the angled bracket members to pivot outwardly and the punch bits to move outward radially for punching holes in the clogged drain pipe sections.

Abstract: The present invention is a method and apparatus for automatically cutting a blind. The blind cutting apparatus comprises a framework, a die assembly, a cutting assembly, a clamp assembly, a blind support base, an integral measuring assembly, an electrical control assembly, and a displacement mechanism. The blind is cut to the exact dimensions by the operator who inputs the dimensions of the window and the size of the blind.

Abstract: A rod pressure holding instruction section controls a servo motor to rotate a two-way pump in a counter direction, and to supply hydraulic oil, with pressure which does not exceed pressure from a weight of a ram, to a two-way pump-side piping, increasing pressure. A difference between pressure in a rod-side cylinder chamber-side piping of a speed switching valve and pressure in a two-way pump-side piping of the speed switching valve is decreased, thereby decreasing an impact generated when switching the speed switching valve and stopping the ram at a predetermined position.