Toyoda Koki Kabushiki Kaisha

Toyota Jidosha Kabushiki Kaisha

Masayoshi Takagi

Takehiko Hayashi

Shuhei Noro

Fumio Sakamoto

Hiroki Yamauchi

Yukio Hoshino

Katutoshi Naruse

Tetsuo Matsuzaki

Takanori Ohta

Takehito Aikawa

Hiroki Osada

Yashuhiro Okada

Ryoichi Takami

Syouji Ikawa

Yoshio Yoshioka

A machining system comprising a plurality of different kinds of single purpose machining units arranged at plural machining stations located along a transfer path, and a transfer apparatus for transferring plural kinds of workpieces along the transfer path so as to position each of the workpieces at plural machining stations successively for machinings by the plural single purpose machining units. The machining system is provided with a return conveyor or a transfer vehicle for transferring the workpieces along a return path from the end of the transfer path to a workpiece unloading station, and a numerically controlled general purpose machine tool arranged adjacent to the return path. The general purpose machine carries out special machinings which cannot be carried out by the single purpose machining units for machining some workpieces which require such special machinings. Workpieces which do not require the special machinings are directly transferred from the end of the transfer path to the workpiece unloading station. The general purpose machine also memorizes plural numerical control programs corresponding to machinings carried by the single purpose machining units, and selectively carries out the numerical control programs when a malfunction occurs in one of the single purpose machining units.

Machining system

In a transfer machine of the type that workpieces are transferred to a plurality of machining stations one after another by reciprocatively moving a horizontally extending transfer bar in a vertical direction and a longitudinal direction thereof, a plurality of transfer turn tables for holding the workpieces are arranged on the transfer bar in a serial fashion and are rotatably carried thereon each for rotatable about a vertical axis. A guided member bodily rotatable with each of the turn tables is formed with a guided groove, which is maintained engaged with a fixed guiding rail during the axial feed movement of the transfer bar, but is engaged with a turn drive claw only at at least one machining station where the angular position of the turn table has to be changed. The drive claw is rotatably carried at the at least one machining station in alignment with the guiding rail and is drivingly connected with a turn drive motor so as to change the angular position of the turn table at the at least one machining station.

Transfer machine

A transfer machine comprising a conveyor for conveying workpieces to stations and numerically controlled machine tools disposed at their respective stations. These machine tools are controlled by sequence controllers, which are connected with their respective numerical controllers. All the programs for machining operations are stored in each numerical controller. When some station is in trouble, the normal machine tool disposed at a station adjacent to the station in trouble is caused to execute the program originally assigned to the station in trouble, as well as the program assigned to the normal station itself.

Programmable transfer machine

A compact machine tool for automatically interchanging two gang heads mounted at the front end of a machining unit. The machine tool includes a horizontally movable tool support, a revolving body mounted above the tool support and rotatable about a first horizontal axis, a tiltable body capable of angularly moving about a second horizontal axis perpendicular to the first horizontal axis, and a gang head magazine. The revolving body is so rotated as to interchange the two gang heads respectively placed in an upper position and a lower position. The magazine has a rotary body for moving plural gang heads within a horizontal plane so that they may be successively placed in a front position.

Machine tool with gang head interchange device

A cam milling machine having a headstock and a tailstock, which are fixed on a bed and are horizontally spaced from each other for carrying at a time two camshafts to be rotatable respectively on their axes which extend horizontally in parallel relation with each other. A tool support carrier is guided on the top of the headstock and is movable by an index feed device in a horizontal direction parallel to the axis of each camshaft. Two tool supports each carrying a milling cutter are carried on the tool support carrier to be vertically movable by respective tool feed devices, each for moving the milling cutter associated thereto toward and away from one of the camshafts. The tool support carrier is moved by an index feed device in the axial direction of the camshafts so that each milling cutter is selectively brought into alignment with one of cams on each camshaft. Further, transfer bars horizontally extend across the space between the headstock and tailstock, so that unfinished camshafts are loaded two at a time into the machine from the front of the machine and after machining, are unloaded from the rear of the machine.

Cam milling machine

Growing community of inventors

Kariya, Japan

Masayoshi Takagi