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Machine translation
1. (WO1981001334) PIEZOELECTRIC RESONANCE CONTACT PICK-UP
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/001334    International Application No.:    PCT/SU1980/000096
Publication Date: 14.05.1981 International Filing Date: 30.05.1980
IPC:
G01B 3/00 (2006.01), G01B 7/012 (2006.01)
Applicants:
Inventors:
Priority Data:
2830457 05.11.1979 SU
Title (EN) PIEZOELECTRIC RESONANCE CONTACT PICK-UP
(FR) DETECTEUR DE CONTACT A RESONANCE PIEZO-ELECTRIQUE
Abstract: front page image
(EN)A piezoelectric resonance contact pick-up comprises a casing (1) having the form of a body of revolution and containing inside a piezoelectric wave exciter (2) which matches the form of the casing (1) and is in acoustic contact with the latter. The casing (1) carries at least two rods (3) provided with contact caps (4), their axes being oriented at right angles to the surface of the casing (1). The piezoelectric wave exciter (2) and the casing (1) form together a common oscillatory system is which the frequency of oscillations of the casing (1) together with the rods (3) and contact caps (4) is equal to the oscillation frequency of a sinusoidal electric signal applied to the excitation electrode (14) of the piezoelectric wave exciter (2). The present invention may be preferable used in coordinate measuring machines intended for measuring linear and angular dimensions of parts with a complex form.
(FR)Un detecteur de contact a resonance piezo-electrique comprend un boitier (1) ayant la forme d"un corps de revolution et contenant un excitateur d"onde piezoelectrique (2) qui epouse la forme du boitier (1) et est en contact acoustique avec ce dernier. Le boitier (1) porte au moins deux tiges (3) pourvues de chapeaux de contact (4) dont les axes sont orientes a angle droit par rapport a la surface du boitier (1). L"excitateur d"onde piezo-electrique (2) et le boitier (1) forment ensemble un systeme oscillatoire commun dans lequel la frequence des oscillations du boitier (1) avec les tiges (3) et les chapeaux de contact (4) est egale a la frequence d"oscillation d"un signal electrique sinusoidal applique a l"electrode d"excitation (14) de l"excitateur d"onde piezo-electrique (2). Le present dispositif peut etre utilise de preference dans des appareils de mesure des coordonnees destines a mesurer des dimensions lineaires et angulaires de pieces ayant une forme complexe.
Designated States:
Publication Language: Russian (RU)
Filing Language: Russian (RU)