Broaching device
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsYoshitake Kasubata, Yoshihiko Higashiguchi, Yuichi Sasaki, Akio Kambe
Life of this patent
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Abstract
A broaching device is provided with puller heads (132,134) that hold tip portions of broaches (116) and are supported in a horizontally freely movable manner, main motors (136, 140) capable of moving the puller heads (132, 134), retriever heads (133,135) that hold base end portions of the broaches (116) and are supported in a horizontally freely movable manner, sub motors (138,142) capable of moving the retriever heads (133,135), and a control device (117) that enables the puller heads (132,134) and the retriever heads (133, 135) to be synchronized with each other and to move at a fixed speed by controlling the motors (136,138,140,142), whereby machining accuracy can be improved.
Claims9
A broaching device comprising:
- a puller head adapted to hold a tip portion of a broach, and supported in a horizontally movable manner;
- a first electric motor capable of moving the puller head;
- a retriever head adapted to hold a base end portion of the broach, and supported in a horizontally movable manner;
- a second electric motor capable of moving the retriever head;
- a first rotation speed sensor adapted to detect a rotation speed of the first electric motor and a second rotation speed sensor adapted to detect a rotation speed of the second electric motor;
- and
- a control device adapted to enable the puller head and the retriever head to be synchronized with each other and to move at a fixed speed by controlling the rotation speeds of the first electric motor and the second electric motor to be a fixed rotation speed based on a detection result of the first rotation speed sensor and the second rotation speed sensor.
A broaching device comprising:
- a puller head adapted to hold a tip portion of a broach, and supported in a horizontally movable manner;
- a first electric motor capable of moving the puller head;
- a retriever head adapted to hold a base end portion of the broach, and supported in a horizontally movable manner;
- a second electric motor capable of moving the retriever head;
- and
- a control device adapted to enable the puller head and the retriever head to be synchronized with each other and to move at a fixed speed by controlling the first electric motor and the second electric motor;
- and
- a clamp device adapted to support a member to be machined between the puller head and the retriever head,
- wherein the clamp device includes a pair of upper and lower support members adapted to support at least one side of an upper portion and a lower portion of prepared holes machined by the broach from one side of the member to be machined, and a pair of upper and lower support pins adapted to be inserted into and support prepared holes at the upper portion and the lower portion of prepared holes machined by the broach from the other side of the member to be machined.
Dependencies are inferred from the claim text.