Punching or pressing machine
OwnerJurgen Schulzinventor
Life of this patent
Estimating the term…
Abstract
A machine for punching or pressing sheet material comprises a support base, a stationary machine member and a machine member which is rectilinearly displaceable relative thereto for the working movement. At least one such member is fitted with a tool and in order to produce the working movement, a wedge is displaceable transversely to the direction of the said movement in a reciprocatory manner by means of a drive provided between the base support, or a member connected thereto, and the displaceable machine member, or a member connected thereto. The load transmitting surfaces on the wedge and the load transmitting surfaces facing the same on the adjacent support base and displaceable member are formed by hardened body-surfaces.
Claims14
In a punching or pressing machine for punching or pressing sheet material having a support base, a stationary machine member rigidly attached to said base, a movable machine member supported between said base and stationary member for reciprocating movement with respect thereto, a punching or pressing tool mounted on at least one of said stationary or movable machine members, a wedge shaped member mounted between said support base and said movable machine member for reciprocating movement in a direction substantially transverse to the reciprocating movement of said movable member so that movement of said wedge member produces said reciprocating movement of said movable member, drive means operably connected between said support base and said wedge member to reciprocate said wedge member relative to said support base and said movable member, and hardened load bearing surfaces on the faces of said wedge member and the adjacent cooperating faces of said support base and movable member, the improvement comprising, all said load bearing surfaces have substantially the same area, and each said surface is a hardened body-surface comprised of a layer of closely spaced hard bodies having a circular cross-sectional shape embedded in a matrix of solidified synthetic resin, the outer surface of said layer being flat and formed by flat coplanar faces of said hard bodies and matrix, said flat faces of said hard bodies being substantially circular in shape and positioned inwardly from the original outer surface thereof 25% to 50% of the diameter of said cross-section.
In a punching or pressing machine for punching or pressing sheet material having a support base, a stationary machine member rigidly attached to said base, a movable machine member supported between said base and stationary member for reciprocating movement with respect thereto, and a punching or pressing tool mounted on at least one of said stationary or movable machine members, a wedge shaped member mounted between said support base and said movable machine member for reciprocating movement in a direction substantially transverse to the reciprocating movement of said movable member so that movement of said wedge member produces said reciprocating movement of said movable member, drive means operably connected between said support base and said wedge member to reciprocate said wedge member relative to said support base and said movable member, and hardened load bearing surfaces on the faces of said wedge member and the adjacent cooperating faces of said support base and movable member, the improvement comprising an eccentric drive adjustment means operatively connected between said support base and said movable member to adjust said movable machine member parallel to the direction of movement of said wedge comprising, at least one bore hole in said movable member, a circular cam member rotatably mounted in said bore hole, a shaft fixedly attached to said cam member, a lever fixedly attached adjacent one end thereof to said shaft and pivotally connected adjacent the other end to an internally screw-threaded member, an elongated externally screw-threaded spindle operatively engaging said screw-threaded member and rotatably mounted on said support base, and a means for rotating said spindle to operate said lever to thereby adjust said movable member.
Dependencies are inferred from the claim text.