A punching apparatus includes a punch holder and a punching tool. The punch holder includes a guiding body having a mounting cavity to slidably receive the punching tool and a driving assembly connected to the guiding body and provided with a beating element having first and second connecting ends coupled by a threaded coupling that enables a relative rotation for a linear movement of the punching tool with respect to the beating element. A stopping element has a first end fixed inside a connecting cavity in one of the connecting ends and arranged to receive the other connecting end and a second end inserted into a stopping cavity of the other connecting end and sliding inside the stopping cavity.

A blanking die apparatus includes a first blanking die including an upper die shoe including an upper die shoe cutting surface and a lower die shoe including a lower die shoe cutting surface. A second blanking die includes an upper die shoe including an upper die shoe cutting surface and a lower die shoe including a lower die shoe cutting surface. The second blanking die movable on a base in a feed direction to increase and decrease a dimension of a blank formed between the first blanking die and the second blanking die.

A punch die includes: a punch body including a punch edge portion at a lower end portion along an axis, a key projecting from an outer periphery, and a punch driver at an upper portion along the axis; a punch guide including an inner hollow elongated along the axis and receiving the punch body to be movable along the axis, and a keyway formed on an internal periphery of the inner hollow to extend along the axis and mesh with the key; a retainer collar rotatably combined with the punch guide at an upper end along the axis and around the axis, the punch driver passing through the retainer collar to be movable along the axis; and a punch head screwed in an upper end portion along the axis of the punch driver to regulate a position of the punch driver.

A punch die includes: a punch body including a punch edge portion at a lower end portion along an axis, a key projecting from an outer periphery, and a punch driver at an upper portion along the axis; a punch guide including an inner hollow elongated along the axis and receiving the punch body to be movable along the axis, and a keyway formed on an internal periphery of the inner hollow to extend along the axis and mesh with the key; a retainer collar rotatably combined with the punch guide at an upper end along the axis and around the axis, the punch driver passing through the retainer collar to be movable along the axis; and a punch head screwed in an upper end portion along the axis of the punch driver to regulate a position of the punch driver.

Punch holders and corresponding punch configurations configured to increase the ease and speed by which maintenance and/or modification of punches used with the holders can be performed. In some cases, the punch holder can be configured with one or more upper and lower collars operatively situated on differing areas of the holder, with each collar adapted to perform a different action with regard to a punch held by the holder. In some cases, when the upper collar is rotated, a corresponding height adjustment of a punch held by the holder results. In some cases, when the lower collar is rotated, a punch held by the holder is released.

A punch head assembly that includes a punch head including a main body having opposite first and second ends, a longitudinal inner bore, a first passageway extending substantially radially from the inner bore, and a second passageway substantially traversing the first passageway. A ball bearing is received in the first passageway. A pin member is received in the second passageway. The pin member is rotationally movable between first and second positions. A driver is coupled to the punch head and includes a stem extending into the inner bore. The stem has an outer ball engagement surface. The punch head is axially movable with respect to the stem. Axial movement of the pin member in the second passageway moves the ball bearing into and out of engagement with the outer ball engagement surface for adjusting an axial position of the punch head with respect to the driver.

A method of adjusting punch body assembly, that has a punch body coupled to a driver, by moving the driver with respect to the punch body until a select axial position is reached along the longitudinal axis of the punch body and locking the driver at the select axial position.

A blanking die apparatus includes a first blanking die including an upper die shoe including an upper die shoe cutting surface and a lower die shoe including a lower die shoe cutting surface. A second blanking die includes an upper die shoe including an upper die shoe cutting surface and a lower die shoe comprising a lower die shoe cutting surface. The second blanking die movable on a base in a feed direction to increase and decrease a dimension of a blank formed between the first blanking die and the second blanking die.

A punch die is provided and includes a punch body extending along an axial direction of the punch die and including a punch edge portion, a key, and a punch driver. The punch die also includes a punch guide configured to removably receive the punch body therein, the punch guide including an inner hollow that receives the punch body and a keyway that receives and guides the key. The punch die further includes a retainer collar detachably coupled to the punch guide and configured to permit the punch driver to pass therethrough and be movable along the axial direction. The punch guide includes a peripheral slot that intersects the keyway of the punch guide and the retainer collar includes a cylindrical projection and an engaging projection that is rotatable to engage the peripheral slot and to be releasably aligned with the keyway.

A method of adjusting punch body assembly, that has a punch body coupled to a driver, by moving the driver with respect to the punch body until a select axial position is reached along the longitudinal axis of the punch body and locking the driver at the select axial position.