Patent application EP20171932A (EP), filed 2020-04-28
Publication number: EP3741499A1
Title: ASSEMBLY AND THE METHOD OF FORMING GAS TURBINE ENGINE COMPONENTS
Abstract: [0001]    A mounting plate (280) for forming a gas turbine engine component (160) comprising a plate body (280A) defining an abutment (280E) dimensioned to mate with a forming die (182, 183). The plate body (280A) defines at least one internal cooling circuit (288). The at least one internal cooling circuit (288) includes a passageway (289) having an intermediate portion (289C) interconnecting inlet and outlet portions (289A, 289B). The intermediate portion (289C) is dimensioned to follow a perimeter of the abutment (280E). The intermediate portion (289C) includes a plurality of fins (290) extending partially from a first sidewall (280F) towards a second sidewall (280G) opposed to the first sidewall (280F). A method of forming a gas turbine engine component (160) is also disclosed.
IPC codes: B23K  20/    02            A I
B23K  37/    00            A I
B23K  37/    04            A I
B21D  22/    02            A I
B21D  26/   053            A I
B21D  37/    16            A I
B21D  53/    78            A I
B22F   5/    04            A I
B23P  15/    04            A I
F01D   5/    14            A I
F04D  29/    32            A I
B22F  10/    20            A I
B22F   3/    24            A I
B22F   7/    06            A I
C22C   1/    04            A I
F01D   5/    28            A I
F04D  29/    54            A I
F04D  29/    58            A I
Claims: number: 1
text: A mounting plate (280) for forming a gas turbine engine component (160) comprising:
number: 2
text: The mounting plate as recited in claim 1, wherein the plurality of fins (290) are integrally formed with the plate body (280A), and each fin of the plurality of fins (290) extends at least a majority of a distance between the first and second sidewalls (280F, 280G).
number: 3
text: The mounting plate as recited in claim 2, wherein the plurality of fins (290) are uniformly distributed along the first sidewall (280F) such that the intermediate portion (289C) has a substantially constant cross-sectional area.
number: 4
text: The mounting plate as recited in claim 2 or 3, wherein the plurality of fins (290) are substantially parallel to each other.
number: 5
text: The mounting plate as recited in any of claims 1 to 4, wherein a cross-sectional geometry of the inlet and outlet portions (289A, 289B) differs from a cross-sectional geometry of the intermediate portion (289E) and optionally the inlet and outlet portions (289A, 289B) have an elliptical cross-sectional geometry.
number: 6
text: The mounting plate as recited in claim 5, wherein the passageway (289) includes first and second transition sections (289D, 289E) that respectively taper inwardly from the intermediate portion (289C) to the inlet and outlet portions (289A, 289B).
number: 7
text: The mounting plate as recited in any of claims 1 to 6, wherein the at least one internal cooling circuit (288) includes a first circuit (288-1) and a second circuit (288-2) fluidly isolated from the first circuit (288-1) within the plate body (290A), and the intermediate portion (289C) of the first circuit (288-1) and the intermediate portion (289C) of the second circuit (288-2) are defined on opposed sides of the abutment (280E) and optionally the plurality of fins (290) of the first circuit (288-1) extend in a first direction away from the abutment (280E), and the plurality of fins (290) of the second circuit (288-2) extend in a second, opposed direction away from the abutment (280E).
number: 8
text: The mounting plate as recited in any of claims 1 to 7, wherein the plate body (280A) extends between top and bottom surfaces (280B, 280C), the top surface (280B) defining the abutment (280E), and the intermediate portion (289C) is spaced apart from the abutment (280B) for at least a majority of positions along the intermediate portion (289C) such that the plate body (280A) defines a direct load path between the abutment (280E) and the bottom surface (280C).
number: 9
text: The mounting plate as recited in any of claims 1 to 8, wherein the plate body (280A) extends between top and bottom surfaces (280B, 280C), and the plate body (280A) defines at least one recess (280F) extending inwardly from at least one of the top and bottom surfaces (280B, 280C) and optionally the at least one recess (280F) extends inwardly from an opening along the top surface (280B), the opening surrounded by the abutment (280E).
number: 10
text: A die assembly for forming a gas turbine engine component (160) comprising:
number: 11
text: The assembly as recited in claim 10, wherein the at least one internal cooling circuit (288) includes inlet and outlet portions (289A, 289B) dimensioned to fluidly couple the passageway (289) to a coolant source (CS), and further comprising:
number: 12
text: A method of forming a gas turbine engine component comprising:
number: 13
text: The method as recited in claim 12, wherein the step of moving the forming die (182, 183) includes moving an actuator (181) to cause the mounting plate (280) to move towards the gas turbine engine component (160).
number: 14
text: The method as recited in claim 12 or 13, wherein the at least one internal cooling circuit (288) includes a first circuit (288-1) and a second circuit (288-2) fluidly isolated from the first circuit (288-1) within the plate body (280A), the plurality of fins (290) of the first and second circuits (288-1, 288-2) arranged on opposed sides of the abutment (280E).
number: 15
text: The method as recited in any of claims 12 to 14, wherein the gas turbine engine component (160) is an airfoil (161), and the moving step includes moving the forming die (182, 183) towards and into abutment with a pressure side (PS) or a suction side (SS) of the airfoil (161).
Office action: search_report, dated 2020-11-25
Rejection reasons: novelty_epc_54
inventive_step_epc_56
Prior art cited: ref_id: EP3680060A1
ref_type: patent
severity: background
ref_id: EP3680059A1
ref_type: patent
severity: background
ref_id: JP2018103266A
ref_type: patent
severity: background
ref_id: US3621700A
ref_type: patent
severity: background
ref_id: US5793024A
ref_type: patent
severity: background
ref_id: US2013125603A1
ref_type: patent
severity: background
ref_id: US2008184762A1
ref_type: patent
severity: background
ref_id: US3621700
ref_type: patent
severity: obviousness
ref_id: US5793024
ref_type: patent
severity: background
ref_id: US2008184762
ref_type: patent
severity: background
ref_id: US2013125603
ref_type: patent
severity: background
ref_id: JP2018103266
ref_type: patent
severity: novelty_destroying
Final disposition: pending (2020-11-25)