Drive for operating a punching tool
OwnerAnton Brunnerinventor
Life of this patent
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Abstract
A drive for operating a punching tool comprises a toggle-joint lever to one of whose lever members the punching tool is operatively connected. The second lever member of the toggle-joint forms part of a quadrilateral linkage. This linkage consists of the second lever member, a first transverse lever member linked at one end to the second lever member and at the other end to another lever element, and a second transverse lever member linked at one end to the other lever element. The first transverse lever member is a two-armed lever supported on a fixed pivot near its linkage to the second lever member for pivoting the two-armed lever about the fixed pivot. The second transverse lever member and the other lever element are linked to a crank drive.
Claims4
A drive for operating a punching tool, which comprises a toggle-joint lever having a first lever member and a second lever member, the punching tool being operatively connected to the first lever member and the second lever member forming part of a quadrilateral linkage;
- the linkage consisting of the second lever member, a first transverse lever element, a first linkage point at which one end of the second lever member is linked to one end of the first transverse lever element, another lever element, a second linkage point at which the other end of the first transverse lever element is linked to one end of the other lever element, the first transverse lever element being a two-armed lever, a second tranverse lever element, and a third linkage point at which the other end of the other lever element is linked to one end of the second transverse lever element;
- a fixed pivot supporting the first transverse two-armed lever element near the first linkage point for pivoting of the two-armed lever about the fixed point;
- and a crank drive, the third linkage point being linked to the crank drive.
A drive for operating a punching tool, which comprises a toggle-joint lever having a first lever member and a second lever member, the punching tool being operatively connected to the first lever member and the second lever member forming part of a quadrilaterial linkage;
- the linkage consisting of the second lever member, a first transverse lever element, a first linkage point at which one end of the second lever member is linked to one end of the first transverse lever element, another lever element, a second linkage point at which the other end of the first transverse lever element is linked to one end of the other lever element, the first transverse lever element being a two-armed lever, means for adjustably mounting the second linkage point whereby the other lever element is mounted for adjustment in relation to the first transverse lever elememt, a second transverse lever element, and a third linkage point at which the other end of the other lever element is linked to one end of the second transverse lever element;
- a fixed pivot supporting the first transverse two-armed lever element near the first linkage point for pivoting of the two-armed lever about the fixed point;
- and a crank drive, the third linkage point being linked to the crank drive.
Dependencies are inferred from the claim text.