Patent application number | Description | Published |
20080203680 | COLLET-TYPE CHUCK - A tool or workpiece has a mounting collar open axially outward, formed with a radially inwardly directed angled flank, and having a radial outer surface of noncircular cross-sectional shape. A chuck has a body formed with an axially forwardly open socket shaped to receive the collar with the axes generally coaxial and having an inner surface of a noncircular cross-sectional shape substantially complementary to the shape of the collar outer surface. A plurality of jaws axially fixed in the socket have radially movable ends engageable inside the collar and each formed with a radially inwardly and axially outwardly directed face. A cam having a face centered on the axis is engageable with the jaw front ends such that axial rearward shifting of the cam presses the jaw front ends outward and thereby presses the jaw faces against the collar flank to lock the collar in the socket. | 08-28-2008 |
20080224423 | Method for Operating an Actuation Unit and Device for Carr - The invention relates to a method for operating an actuation device ( | 09-18-2008 |
20080252023 | Apparatus for Chucking a Tool or Workpiece Having a Collet - The invention relates to an apparatus for holding a workpiece ( | 10-16-2008 |
20090278323 | DEVICE USABLE AS GRIPPER HEAD OR CHUCK - A device for clamping a stem has a body forming a piston chamber and having an axially outwardly open hole adapted to receive the stem and a plurality of collet jaws in the hole shiftable axially by a piston between an outer releasing position with its axial outer ends radially spread and an inner holding position with the ends more closely radially juxtaposed. The stem is engageable axially in the hole between the jaws and lockable in the body in the inner holding position. A main spring urges the piston and jaws axially inward into the inner position. A cover element has an outer head and is axially shiftable relative to the piston between an extended position with the head engaged radially between the outer ends of the jaws and a retracted position with the head spaced axially inward from the outer ends of the jaws. | 11-12-2009 |
20100201083 | CHUCK FOR A TUBULAR BODY - The invention relates to a tensioning device for a hollow shaft ( | 08-12-2010 |
20110074121 | CHUCK WITH STATIONARY ACTUATOR - A chuck has a stationary support and a spindle rotatable in the support and having forward therefrom a forwardly open seat for a workpiece. A plurality of jaws are shiftable in the support to grip or release the workpiece. A pull rod coupled to the jaws projects rearward therefrom and carries a central plate. A rear plate spaced rearward of the central plate is rotationally fixed to the spindle. A push rod axially shiftable in the rear plate has a front end engageable with the central plate and a rear end projecting rearward from the rear plate. A spring braced between the spindle and the central plate urges the central plate rearward. A piston is shiftable in the support between a front position bearing forward opposite to the spring on the push rod and therethrough on the central plate and a rear position spaced rearward of the push rod. | 03-31-2011 |
20130014620 | ELECTRIC-DRIVE STEADY RESTAANM HANGLEITER; EugenAACI HermaringenAACO DEAAGP HANGLEITER; Eugen Hermaringen DEAANM Schenk; PeterAACI NiederstotzingerAACO DEAAGP Schenk; Peter Niederstotzinger DE - A steady rest has a body juxtposable with a workpiece rotatable about a workpiece axis. Two arm elements are pivoted on the body and carry outer rollers radially engageable with the workpiece. A center element shiftable on the body in a straight line generally radially of the axis carries a center roller engageable radially with the workpiece. The rollers are angularly spaced about the workpiece. An electric actuator mounted on the body is connected by a transmission to the elements for displacing the respective roller radially relative to the workpiece. | 01-17-2013 |
20140001713 | GRIPPER WITH EMERGENCY RELEASE | 01-02-2014 |