US 11,305,388 B2Granted

Machine tool

AssigneeMakino Milling Machine Co., Ltd.

InventorsMasahiro Asano, Yuichi Yonemitsu, Naokazu Sugiyama, Naoya Sumita

Life of this patent

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Abstract

This machine tool is provided with: a bridge which is provided on a base in such a way as to straddle a moving body in a direction (X) perpendicular to a direction of movement (Z) of the moving body at a stroke end (E2) of the moving body; a pallet exchanging arm which is provided above the bridge and which engages with a pallet (P) supported on the moving body and a pallet (P) on a pallet loading station, lifts both pallets (P), and pivots about a vertical axis (Ov) to exchange the two pallets (P); and an arm drive device which is provided projecting upward on the bridge, and which moves the pallet exchanging arm along the vertical axis (Ov) and causes the pallet exchanging arm to pivot about the vertical axis (Ov).

Claims6

Dependent claims

A machine tool for processing a workpiece by moving a pallet attached with the workpiece and a spindle attached with a tool relative to each other, the machine tool comprising

a moving member exchangably attached with a pallet and moving in a horizontal direction,
a pallet changer engaging with the pallet attached to the moving member and a pallet on a pallet loading station, and exchanging the two pallets by rotating the pallets about a vertical axis, and
a support stand for supporting the pallet changer, the support stand securing a space where the moving member slides below the pallet changer beyond the vertical axis, when the moving member is at a pallet changing position, wherein
the support stand is a bridge provided on a base so as to straddle the moving member in a direction vertical to the direction of movement of the moving member.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 16/646,869Filed 13 Sep 2017
Published: US 2020/0276678 A13 Sep 2020
Granted: 19 Apr 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B23Q 1/48
Using particular mechanisms: with sliding pairs and rotating pairs
B23Q 1/54
With rotating pairs only , the rotating pairs being the first two elements of the mechanism: two rotating pairs only
B23Q 7/00
Arrangements for handling work specially combined with or arranged in, or specially
B23Q 7/1431
With work holders not rigidly fixed to the transport devices: work holder changers

Family

US 2020/0276678 A1Pre-grant publication · published 3 Sep 2020
US 11,305,388 B2This patent

From the US filing history. Foreign family members aren’t listed.

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