High precision expanding mandrel with cylindrical or compensated gripping
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 2, 2002
Grant Date -
Oct 18, 2001
app pub date -
Mar 7, 2001
filing date -
Mar 13, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention provides a mandrel comprising a shaft (1) the forward end of which has the shape of a forward pointing truncated cone (7), an expanding sleeve (15) constituted by a ring provided with longitudinal slits designed to slide over said conical forward end (7), and a piston (8) which is guided in a cylindrical bore provided along the axis of the mandrel shaft (1), from which it projects forwards, with the sliding of said piston (8) driving said sleeve (15) so as to control the gripping or the releasing on said mandrel of a workpiece to be machined. According to the invention, the forward end of the piston (8) has the shape of a rearward pointing truncated cone (12), and the inner wall of the sleeve (15) has the shape of two successive truncated cones (17, 18) orientated mirror image fashion, with the apex angle of the forward cone (18) of the sleeve (15), which is capable of mating with said cone (12) of the piston, being greater than the apex angle of the rear cone (17) of the sleeve (15), which is capable of mating with said cone (7) of the shaft (1). Application to the gripping of workpieces having a cylindrical or conical bore.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully