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US 2018/0079039 A1Published application
Workpiece lifting and lowering device
AssigneeDmg Mori Seiki Co., Ltd.
InventorsHiroshi YASUDA, Yutaka NISHIMURA, Masami HARADA
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Abstract
A workpiece lifting and lowering device is provided with: a workpiece base supported as to be capable of being lifted and lowered, and mounting a workpiece; a link mechanism connected to the workpiece base, and lifting and lowering the workpiece base by converting a rotation motion to a lifting and lowering motion; and a driving mechanism rotationally driving the link mechanism through a transmission member.
Claims4
1:
- A workpiece lifting and lowering device comprising:
- a workpiece base supported as to be capable of being lifted and lowered, and mounting a workpiece;
- a link mechanism connected to the workpiece base, and lifting and lowering the workpiece base by converting a rotation motion to a lifting and lowering motion;
- and
- a driving mechanism rotationally driving the link mechanism through a transmission member.
2 more elements
2:
- The workpiece lifting and lowering device according to claim 1, wherein the link mechanism includes a pair of first and second link mechanisms which is connected to the workpiece base,
- the transmission member includes first and second transmission members which transmit the rotation motion of the first and second link mechanism, and
- the driving mechanism rotationally drives the first and second transmission members by one common driving source.
3:
- The workpiece lifting and lowering device according to claim 2, wherein the first and second link mechanisms include first and second revolving arms, which are rotationally driven by the first and second transmission members, and first and second cam plates, to which the workpiece base is stretched and fixed, and which have cam grooves in which a tip end part of the first and second revolving arms are connected.
4:
- The workpiece lifting and lowering device according to claim 2, wherein the workpiece lifting and lowering device is mounted in a workpiece tilting device which is capable of tilting, and the driving mechanism is arranged between a frame of the workpiece lifting and lowering device and a bottom part of the workpiece tilting device.