Yamazaki Mazak Kabushiki Kaisha

Kiwa Giken Kabushiki Kaisha

Kazuyuki Toda

Yukiyasu Nakamura

Naoomi Miyagawa

Chiyoaki Yoshida

Minoru Tashiro

Naoomi Miyakawa

Yoshihisa Yamaoka

Isao Kuwayama

Miyagawa Naoomi

Laser machining system including a laser machine, a stack yard for storing pallets, a stacker crane for transferring pallets. Standard pallets and multi-pallets are stored in the stack yard. The standard pallet has a pallet base and plates are piled on the pallet base directly. The multi-pallet comprises a pallet base and pallet components stacked on the pallet base. Each pallet has pallet components which each store a single plate. A transfer device is provided for loading a blank plate (pre-worked plate) to the laser machine and unloading a post-worked plate from the laser machine. Returning devices are provided for returning post-worked plates to the stack yard.

Laser machining system

Various kinds of raw workpieces are stocked in a stocker. A predetermined kind of the workpiece is selected from the stocker with a lifter so as to move to a loading station. The workpiece is held with a vacuum pad of a loader of a workpiece carrying unit. The workpiece carrying unit is moved to a position adajacent to a laser processing machine so as to make the workpiece carrying unit stood by at the position. When machining finishes in the laser processing machine, a supporting unit like a comb of an unloader of the workpiece carrying unit is inserted below the machined workpiece, put on the table of the laser processing machine. The supporting unit is lifted up so as to pick the workpiece up out of the table. The raw workpiece is immediately put on the table with the loader. The workpiece carrying unit is moved to the unloading station. The machined workpiece is put on rollers of the unloading station with the unloader. The rollers are moved so as to drop the machined workpiece on the pallet.

Laser machining cell

A press brake has upper dies and lower dies so as to be capable of attaching and detaching with an upper die exchange apparatus and a lower die exchange apparatus to a machine body of the press brake. And, the upper die and the lower die comprise the combination of divisional die chips. The storing of dies is performed with those die chips. And, the face width of the upper die chips is determined and combined according to size of a workpiece to be processed from the upper die chips.

Die exchange apparatus for the use of a press brake

A press brake having a lower die disposed in a horizontal position and an upper die movable in up and down directions out of and into workpiece shaping relationship with lower die for shaping a workpiece, at least one workpiece measuring portion provided on the lower die, at least one workpiece measuring device at the workpiece measuring portion, the workpiece measuring device having probes movable in up and down directions for contacting the shaped portion of the workpiece which is in the lower die, a workpiece contacting portion on each of said probes for contacting said workpiece as the probes are moved upwardly in said lower die, and a displacement detecting device connected to the workpiece measuring device for detecting relative displacement in the up and down directions between the probes as the probes respectively engage the workpiece. The lower die can be formed of a plurality of unit lower dies with spaces therebetween forming the workpiece measuring portion and in which the workpiece measuring device is positioned. The structure enables a shaped workpiece to be measured while it is still between the dies.

Press brake and a workpiece measuring method in the press brake

The bending of a workpiece between a lower and an upper die is measured by way of a workpiece measuring device having a workpiece measuring portion. A depth chasing quantity in a predetermined position of the workpiece is obtained by a folding form operating portion on the basis of the measured folding angle. And, crowning quantity is obtained by a crowning correction operating portion. Moreover, a depth correction value is obtained by a depth correction operating portion and a balance correction value of right and left is obtained by a balance correction operating portion. Then, bending is performed on a workpiece on the basis of the obtained correction values.

Growing community of inventors

Aichi, Japan

Kazuyuki Toda