Abstract: A tool changing mechanism for an automatic changing of tools for a press ram and die of a forming press such as a multistage metal forming press. The tool changing mechanism includes a magazine having holders for accommodating individual tools. The individual tools have different codings and the holders have electrical or electronic code reading devices associated therewith and connected to a comparator for comparing the codes measured or read by the code reading devices with the preset code means in the comparator. Upon a deviation of a measured code from the preset coding in the comparator, the comparator provides an indication of the deviation by transmitting an error signal so as to enable an avoiding of the occurrence or errors in the filling or charging of the magazine with tools. The code reading device may be constructed as series-type limit switches operating without contact and the codes on the respective tools may be fashioned as indentations or recesses provided in the tools.

Abstract: An adjustable cam arrangement is provided for controlling various work handling elements of a multistage press. Releasable cam disc members are mounted on a camshaft for actuating a respective cam follower associated with a work handling element. The cam disc members are drivingly coupled to the camshaft in response to a supply of fluid pressure. The cam disc members contain a pair of cam discs adjustable by a motor for independently rotating the cam discs relative to the camshaft for varying the duration and timing of work handling elements.

Abstract: A forming press is disclosed having a press frame, a slidable press carriage, and at least one tool couple comprising a plunger and a matrix. A pressure member is movable in the direction of motion of the press carriage for bracing the plunger against the press carriage. A screw controlled adjustment means including a motor is mounted on the press frame for driving the screw of the adjustment means and thereby positioning the pressure member. A drive gear is mounted on the screw, and coupling means is provided for connecting the motor and the drive gear at a predetermined position of the press carriage.

Abstract: A wire insertion apparatus particularly for forming presses and the like comprising at least one pair of insertion rollers between which a wire or rod is periodically advanced by a predetermined insertion length, a crank and connecting rod mechanism connecting at least one of the insertion rollers to a drive shaft for producing a periodic angular movement of the insertion rollers, the mechanism comprising an intermediate lever member pivotally mounted on an axis, first and second linkage rods connecting the intermediate member respectively with an eccentric on the drive shaft and an eccentric mounted on one of the insertion rollers so that rotation of the drive shaft produces angular movement of the insertion roller in response to pivotal motion of the intermediate lever member, and means for shifting the pivot point of one of the linkage rods so as to change the distance between the pivot axis and that rod and thereby change the degree of angular movement of the insertion rollers.

Abstract: A multiple stage press of the type having a plurality of punches and dies mounted in substantially parallel planar die sets and including a tool changing mechanism comprising a magazine for holding the tools, a transfer mechanism movable for carrying tools from the magazine to the die sets and from the die sets to the magazine, the transfer mechanism including a gripper arm pivotable about an axis inclined relative to the planes of the die sets, the gripper arm being mounted on a slide so as to be rectilinearly movable parallel to the planes of the die sets, whereby a tool carried by the gripper arm may be positioned between the die sets.