Quick-change drill chuck
AssigneeRohm Co., Ltd.
InventorGünter Horst Röhm
Life of this patent
Estimating the term…
Abstract
A drive spindle is formed with an axially forwardly open socket of noncircular section and with at least one radially throughgoing passage open radially inward into the socket. A chuck body has a stem of noncircular section complementary to that of the socket and formed with a radially outwardly open recess. A locking element is radially displaceable in the passage between an inner position projecting radially inward into the socket and an outer position clear of the socket and projecting radially outward from the spindle. The stem is fittable to the socket with its recess aligned with the passage. A collar is formed with an inner surface closely juxtaposed with an outside surface of the spindle and with a radially inwardly open recess.
Claims15
A drill comprising:
- a drive spindle centered on and rotatable about a spindle axis and formed centered on the spindle axis with
- an axially forwardly open socket of noncircular section,
- at least one radially throughgoing passage open radially inward into the socket,
- a radially directed rotation-symmetrical surface portion, and
- an axially directed planar face perpendicular to the spindle axis;
- a chuck body formed with a radially directed rotation-symmetrical surface portion complementary to the radially directed surface portion of the spindle and with an axially directed planar face perpendicular to a stem axis;
- a stem of noncircular section complementary to that of the socket, fixed to the chuck body, extending along the stem axis from the chuck body, and formed with a radially outwardly open recess, the stem being fittable in the socket with the radially directed surface portions snugly radially engaging each other and the faces bearing axially flatly on each other;
- a locking element radially displaceable in the passage between an inner position projecting radially inward into the socket and an outer position clear of the socket and projecting radially outward from the spindle, the recess being aligned with the passage when the stem is fitted to the socket with the faces bearing axially on each other;
- and
- a collar formed with an inner surface closely juxtaposed with an outside surface of the spindle and with a radially inwardly open recess, the collar being axially displaceable on the spindle between a locked position with its inner surface pressing the element into the inner position and an unlocked position with its recess level with the element and the element movable into the outer position engaged in the collar recess.
A drill comprising:
- a drive spindle centered on and rotatable about a spindle axis and formed centered on the spindle axis with an axially forwardly open socket of noncircular section and with at least one radially throughgoing passage open radially inward into the socket;
- a chuck body;
- a stem of noncircular section complementary to that of the socket, fixed to the chuck body, and extending along a stem axis from the chuck body, the stem being formed with a radially outwardly open recess;
- a locking element radially displaceable in the passage between an inner position projecting radially inward into the socket and an outer position clear of the socket and projecting radially outward from the spindle, the stem being fittable to the socket with its recess aligned with the passage;
- a collar formed with an inner surface closely juxtaposed with an outside surface of the spindle and with a radially inwardly open recess, the collar being axially displaceable on the spindle between a locked position with its inner surface pressing the element into the inner position and an unlocked position with its recess level with the element and the element movable into the outer position engaged in the collar recess;
- a sleeve axially displaceable on the chuck body and axially engageable with the collar;
- and
- a spring braced between the sleeve and the chuck body and urging the sleeve axially away from the collar.
Dependencies are inferred from the claim text.