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1. (AU1991091302) Process and device for grinding the surface of a component, in particular in the repair of turbine buckets

Office : Australia
Application Number: 91302/91 Application Date: 10.12.1991
Publication Number: 1991091302 Publication Date: 02.09.1993
Publication Kind : A
Prior PCT appl.: Application Number:FR1991000993 ; Publication Number: Click to see the data
IPC:
G05B 19/416
B23Q 5/26
B23Q 17/22
B24B 19/14
G PHYSICS
05
CONTROLLING; REGULATING
B
CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
19
Programme-control systems
02
electric
18
Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
416
characterised by control of velocity, acceleration or deceleration
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
Q
DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; 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
5
Driving or feeding mechanisms; Control arrangements therefor
22
Feeding members carrying tools or work
26
Fluid-pressure drives
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
Q
DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; 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
17
Arrangements for indicating or measuring on machine tools
22
for indicating or measuring existing or desired position of tool or work
B PERFORMING OPERATIONS; TRANSPORTING
24
GRINDING; POLISHING
B
MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
19
Single purpose machines or devices for particular grinding operations not covered by any other main group
14
for grinding turbine blades, propeller blades or the like
CPC:
B24B 19/14
B23Q 5/266
B23Q 17/2216
G05B 19/4163
Y02P 90/265
Applicants: Electricite De France
Inventors: Clement, Philippe
Girard, Claude
Priority Data: 90 15425 10.12.1990 FR
Title: (EN) Process and device for grinding the surface of a component, in particular in the repair of turbine buckets
Abstract:
(EN) Device and process for rapidly grinding an irregular surface. The process consists in, firstly, measuring in relation to the model of the surface in its final state, the grinding allowances at a certain number of modelling points. Secondly, the feed rate, the rotational speed and the pressure of the grinding wheel are adapted to the grinding allowances. The grinding wheel (20) pressing system comprises a pneumatic cylinder (30) and a passive hydraulic cylinder (31) which serve as dampers to match the machining force to the variations in the grinding allowances between the modelling points, thereby resulting in high-speed levelling of the surface. Application, in particular, to the inner surfaces of Pelton turbine buckets after hardfacng by means of weld beads.
Also published as:
WO/1992/010796