# US 2014/0191455 A1 · Device for holding a turbine engine blade for the purposes of machining

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- Number: US 2014/0191455 A1
- Document ID: US20140191455A1
- Status: Published application
- Kind: A1
- Application number: 14/127,386
- Filed: 2012-06-07
- Published: 2014-07-10
- Earliest claimed: 2011-06-21
- Assignees: Snecma
- Inventors: Thomas Marquoin; Olivier Dupouy
- Web page: https://patentgrep.com/patent/US20140191455A1

## CPC

- B23Q 3/063: {for holding turbine blades}
- B23Q 3/061: {adapted for holding a plurality of workpieces}
- B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT

## Abstract

A device for holding a turbine engine blade for purposes of machining, the device including a support including at least one housing in which at least one block is removably mounted, the block including two jaws presenting an opening for mounting an airfoil of a blade. The block further includes six presser points for pressing against the airfoil, and a movable presser finger for pressing against a pressure side surface or a suction side surface of the blade, the finger being moved by an actuation mechanism such that in a blade clamping position, the presser finger presses the blade against the presser points of the block, which itself is pressed against the support.

## Claims

### Claim at position 1

1-10. (canceled)

### Claim 11

A device for holding a turbine engine blade for purposes of machining, the device comprising:
a support including at least one housing in which at least one block is mounted in a removable manner, the block including an opening for mounting an airfoil of a blade and including at least six presser points for pressing against the airfoil; and
a movable presser finger for pressing against a pressure side surface or a suction side surface of the blade, the finger being moved by actuation means so that in a position for clamping the blade, the presser finger presses the airfoil against the presser points of the block, which itself is pressed against the support.

### Claim 12 (depends on 11)

A device according to claim 11, wherein the presser points are formed by studs or removable studs, including ends for coming into contact with the blade that do not have any sharp edges or that are hemispherical.

### Claim 13 (depends on 12)

A device according to claim 12, wherein the block includes an internal wall defining the opening for mounting the airfoil, from which wall there project:
first, second, and third mutually spaced-apart studs for pressing against a leading edge of the blade or close thereto;
a fourth stud for pressing against a trailing edge of the blade or close thereto;
a fifth stud for pressing in register with the movable presser finger; and
a sixth stud for pressing against a platform of the blade.

### Claim 14 (depends on 13)

A device according to claim 13, wherein the block includes two studs for pressing against the platform of the blade before the blade is clamped by the movable presser finger, the platform being spaced apart from the studs after the blade has being clamped.

### Claim 15 (depends on 11)

A device according to claim 11, wherein the block includes a hole for passing the movable presser finger.

### Claim 16 (depends on 11)

A device according to claim 11, wherein the block includes two jaws that are hinged to each other at one end and fastened to each other at another end.

### Claim 17 (depends on 11)

A device according to claim 11, wherein the means for actuating the presser finger comprises a cam including an actuation handle, turning the cam with help of the handle causing the movable presser finger to move.

### Claim 18 (depends on 17)

A device according to claim 17, further comprising an abutment for limiting an angular stroke of the actuation handle.

### Claim 19 (depends on 11)

A device according to claim 11, wherein the support includes a plurality of housings, each housing for mounting a respective block and blade.

### Claim 20 (depends on 11)

A device according to claim 11, wherein the support includes retaining means for retaining the block inside a corresponding housing.