Patent ID: 8616107

Claim:
A punching tool ( 1 ) comprising a punching die ( 2 ) for forming at least one punched hole in a workpiece; a guide housing ( 13 ) in which the punching die ( 2 ) is guided along a punching displacement movement thereof; with the punching die ( 2 ) comprising a punching member ( 3 ) with a punching portion ( 4 ); a head ( 5 ); a safety device ( 25 ) which secures the punching die ( 2 ) against an unwanted release from the guide housing ( 13 ) when the punching tool ( 1 ) is gripped at the head ( 5 ) and which comprises a base guide body ( 27 , 28 ) which is securely mounted relative to the punching die ( 2 ) at least with respect to a gripping force direction ( 30 ) acting on the punching die ( 2 ) in a direction opposite to a punching direction; a counter guide body ( 31 , 32 ) which is securely mounted relative to the housing at least with respect to the gripping force direction ( 30 ) and is displaceable relative to the base guide body ( 27 , 28 ) in the circumferential direction about a longitudinal axis ( 7 ) of the punching tool ( 1 ), with the guide bodies ( 27 , 28 ; 31 , 32 ) being designed in such a way so that in at least one retaining relative circumferential position, the guide bodies ( 27 , 28 ; 31 , 32 ) interact in a securing manner; in a release relative circumferential position, which is displaced relative to said retaining relative circumferential position in the circumferential direction about the longitudinal axis ( 7 ), the guide bodies ( 27 , 28 ; 31 , 32 ) allow the punching die ( 2 ) to be released from the guide housing ( 13 ) in the gripping force direction ( 30 ), with the base guide body ( 27 , 28 ) being designed as at least one circumferential rib which extends about the longitudinal axis ( 7 ) of the punching tool ( 1 ) over a portion of a circumference, with the counter guide body ( 31 , 32 ) being designed as at least one guide groove which is complementary to the at least one circumferential rib and extends about the longitudinal axis ( 7 ) of the punching tool ( 1 ) at least over a portion of the circumference, wherein the punching tool comprises exactly two circumferential ribs ( 27 , 28 ) and exactly two guide grooves ( 31 , 32 ), there being provided two recesses ( 34 , 35 ) between the two guide grooves ( 31 , 32 ) when seen in the circumferential direction, with each of the two recesses ( 34 , 35 ) having a circumferential extension which is at least equal to the circumferential extension of one of the circumferential ribs ( 27 , 28 ); with the circumferential rib ( 27 , 28 ) being provided in an annular lid ( 15 ) which encloses the punching die ( 2 ) and which rests on a circumferential collar ( 14 ) of the guide housing ( 13 ).