A machining-state-estimating device includes a storage device and a processor. The storage device stores criterion reference data corresponding to a parameter that defines a machining state of a pressing machine and zone shape information. The zone shape information defines a zone length and a retreating amount. The zone length indicates a length of each of at least one zone representing a punched contour by the pressing machine. The retreating amount indicates a dimensional change of the punched contour from a predetermined position in each of the at least one zone. The processor acquires measurement data indicating a measurement result of a machining load of machining performed by the pressing machine, and generates comprehensive reference data regarding the machining load based on the criterion reference data and the zone shape information. The processor determines a similarity degree that is an index of a degree of similarity between the comprehensive reference data and the measurement data, and estimates a machining state in each of the at least one zone based on the similarity degree determined.

A tool mark generating apparatus for 3D digital conversion research according to an embodiment includes: a base plate; a vise portion located on the base plate to fix a target object at a position spaced from the base plate; and an operating portion configured to fix a tool on one side and apply an impact to the target object by moving the tool to form a pressed mark or perforation, wherein the operating portion includes: a step motor, a main screw, a nut, and a tool block that fixes at least one tool by inserting and securing the tool in a vertically aligned position.