US 10,293,414 B2Granted

Drilling method, drilling jig, and heat exchanger

AssigneeMitsubishi Hitachi Power Systems, Ltd.

InventorsRyo Matsubara, Junji Noda

Life of this patent

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Abstract

A drilling method for forming a plurality of through-holes in a plate member includes: a first step of fixing at least one jig, which has a clearance hole, on a bed of a machine tool; a second step of placing the plate member on the at least one jig and fixing the plate member on the bed; a third step of operating the machine tool so that a leading end portion of a drilling tool of the machine tool is inserted into the clearance hole, and forming a first through-hole at a position of the plate member corresponding to the clearance hole; a fourth step of passing a fixing member through the first through-hole, and fixing the plate member on the at least one jig using the fixing member; and a fifth step of operating the machine tool to form a second through-hole other than the first through-hole.

Claims5

Dependent claims

A drilling jig comprising:

a base part extending along a base plane;
and
a stand part extending along a direction perpendicular to the base plane so as to protrude from the base part,
wherein the stand part includes:
a support portion on an upper end of the stand part for supporting a plate member which is an object to be drilled, the support portion being disposed around a clearance hole extending along the direction perpendicular to the base plane inside an upper portion of the stand part;
an engaging part under the clearance hole, the engaging part being configured to engage with a fixing member for fixing the plate member through the clearance hole, and the engaging part including a female thread which is configured to be screw-engaged with a male thread defined in the fixing member;
a cavity portion between the engaging part and the base part in the direction perpendicular to the base plane, on a center axis of the clearance hole;
and
a chip outlet in communication with the cavity portion.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/866,976Filed 10 Jan 2018 · division
Priority: JP 2013-00274610 Jan 2013
Published: US 2018/0147640 A131 May 2018
Granted: 21 May 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

B23B 39/06
Co-ordinate boring or drilling machines; Machines for making holes without previous marking: equipment for positioning work
B23B 47/28
Constructional features of components specially designed for boring or drilling machines; Accessories therefor: drill jigs for workpieces
B23B 47/287
Drill jigs for workpieces: jigs for drilling plate-like workpieces
B23B 2247/12
Details of drilling jigs: drilling jigs with means to affix the jig to the workpiece

Family

PCT/JP2013/084070Parent of this division · filed 19 Dec 2013
US 2018/0147640 A1Pre-grant publication · published 31 May 2018
Application14/441,871Parent of this division
US 10,005,134 B2Related patent
US 2015/0314376 A1Published application
US 10,293,414 B2This patent

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