Abstract: A drill has a drive-unit housing having an end wall, a drive-unit spindle projecting along an axis from the wall, and a chuck body fixed to the spindle, formed with an axially forwardly open tool recess, and formed with a plurality of angled guide passages opening forward into the recess. Respective jaws displaceable in the passages are engageable in the recess with a tool. a rear plate mounted on the chuck body axially rearward of the jaws and projecting transversely of and closely axially juxtaposed with the housing end wall is formed with a hole communicating with at least one of the passages and having an outer end radially outside the end wall.

Abstract: A drill-chuck jaw hag an elongated metal body formed with a toothed back face and an opposite front face. The body is generally symmetrical to a longitudinal plane bisecting the back and front faces. A pair of hard-metal insert parts fixed to the front face are each formed with a projecting linear edge extending longitudinally parallel to but offset from the plane. The edges symmetrically flank the plane.

Abstract: A drill chuck has a body formed with an axially forwardly open tool-receiving recess and with a plurality of angled guides opening axially forward in the recess. Respective jaws axially and radially displaceable in the guides are each formed with a row of teeth. A tightening ring axially fixed but rotatable about the axis on the body has a screwthread meshing with the teeth so that rotation of the ring displaces the jaws in their guides. An adjustment sleeve is rotatable about the chuck axis on the body. The body has rearward of the tightening ring an outer surface directed toward an inner surface of the adjustment sleeve. Mechanism inside the adjustment sleeve couples the adjustment sleeve to the tightening ring. A support washer has an inner periphery axially fixed to the outer body surface and an outer periphery axially fixed to the inner adjustment-sleeve surface.

Abstract: A chuck body is formed with angled guides holding respective jaws. A tightening ring rotatable about the axis on the chuck body has a screwthread meshing with toothed edges of the jaws so that rotation of the ring in one direction moves the jaws axially forward and radially together and opposite rotation moves the jaws axially rearward and radially apart. A spring washer is rotatable about the axis on the body between the tightening ring and the rear jaw faces. Rearwardly directed jaw faces axially rearwardly engage and press the washer toward the tightening ring and coupling formations on the washer and ring angularly lock the washer to the ring when the washer is pressed axially rearward by the faces. Stops on the washer can engage the jaws for permitting only limited relative angular movement of the washer and jaws when the faces are pressed axially rearward against the washer.

Abstract: A collet chuck for holding a mounting collar of an object to be rotated has a chuck body centered on and rotatable about an axis and formed with an axially forwardly open socket shaped to receive the collar. A plurality of jaws in the socket have front ends engageable inside the collar in the socket and each formed with a radially inwardly directed planar front face. A setting sleeve has a front cam surface formed with respective planar radially outwardly directed front facets engageable with the front faces of the jaws so that the sleeve can cam out the front ends to lock the jaws to the collar in the socket.

Abstract: A collet chuck for holding a mounting collar of an object—tool or workpiece—to be rotated has a chuck body centered on and rotatable about an axis and formed with a forwardly open socket shaped to receive the collar. A plurality of jaws in the socket have front ends engageable inside the collar in the socket and rear ends. The jaws are angularly spaced and defining axially extending and radially inwardly open slots. A setting sleeve has a front cam surface engageable with inner faces of the front ends of the jaws so that the sleeve can cam out the front ends to lock the jaws to the collar in the socket. The sleeve is formed with radially outwardly projecting and axially extending ribs each received in a respective one of the slots.

Abstract: A drill chuck has a chuck body rotatable about a chuck axis and having a rear end adapted to fit with a drive spindle and a front end formed with a tool recess. A plurality of jaws angularly spaced on the body about the axis and exposed in the tool recess are radially displaceable relative to the body between inner and outer positions. A tightening ring is axially fixed but rotatable about the axis on the body. Screwthread formations between the tightening ring and the jaws can move the jaws radially together and radially apart. A tightening sleeve surrounding the body and connected to the tightening ring is adapted to be gripped by hand to rotate the ring in the directions. A shield sleeve surrounds the body between the tightening sleeve and the body front end and is supported on the body for rotation thereon about the axis independently of the body and of the tightening sleeve.

Abstract: A drill chuck has a body formed with an axially forwardly open tool recess and holding a plurality of tool-gripping jaws. A socket formed with an axially forwardly open polygonal-section seat is nonrotatable in a seat of the chuck body and axially displaceable in the chuck body into and out of a tool-releasing position. A latch is radially displaceable in the socket in the tool-releasing position of the socket between an inner retaining position projecting radially into the seat and an outer freeing position clear of the seat and projecting radially into the pocket. The latch is aligned radially with the pocket only in the tool-releasing position. The chuck body engages the latch and forces it into the inner retaining position.

Abstract: A drill has a drive spindle centered on and rotatable about a spindle axis and formed centered on the 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 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. A collar is formed with an inner surface closely juxtaposed with an outside surface of the spindle and with a radially inwardly open recess. The collar is 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.

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.

Abstract: A drill chuck has a chuck body rotatable about a chuck axis and formed centered on the axis with an axially forwardly open tool receiving hole, an array of axially extending guides opening axially forward into the hole, a rear axially forwardly directed shoulder and a front axially forwardly directed shoulder. Respective externally toothed jaws axially displaceable in the guides mesh with an internally threaded actuating ring rotatable on the chuck body about the axis to axially displace the jaws in the respective guides. An elastically deformable support washer bears axially forward on the actuating ring and has an inner periphery bearing axially backward on the rear chuck-body shoulder. The washer bears on the rear chuck-body shoulder over a radial distance equal to at most one-half its radial dimension such that the support ring projects at least halfway from the chuck body.

Abstract: A drill has a drive-unit housing having an end wall, a drive-unit spindle projecting along an axis from the wall, and a chuck body fixed to the spindle, formed with an axially forwardly open tool recess, and formed with a plurality of angled guide passages opening forward into the recess. Respective jaws displaceable in the passages are engageable in the recess with a tool. a rear plate mounted on the chuck body axially rearward of the jaws and projecting transversely of and closely axially juxtaposed with the housing end wall is formed with a hole communicating with at least one of the passages and having an outer end radially outside the end wall.

Abstract: A drill-chuck jaw is made by first forming an elongated metal body with a toothed back face and a planar front face and thereafter laser-welding an insert to the body on the face. After machining the body but before laser-welding the inserts to it, the body is heat-treated and surface hardened. After the heat-treating and surface-hardening step and before the laser-welding step, the body in tampered.

Abstract: A chuck has a body centered on an axis and formed with a rearwardly open bore adapted to fit with a drive spindle. Respective jaws are displaceable in angled guides of the body and a ring rotatable on the body has an internal screwthread meshing with the jaws for moving the jaws between their end positions on rotation of the ring. A latch element is radially displaceable on the body between a holding position projecting radially into the bore and locking the spindle therein and a freeing position clear of the bore. A sleeve is displaceable between a latched position forcing the element into the holding position and an unlatched position allowing it to move into the freeing position. A spring between the sleeve and the body urges the sleeve into the latched position. The spring is mostly forward of rear ends of the jaws in the rear-end positions thereof.

Abstract: An integrated power chuck assembly for a lathe has a hollow lathe spindle of a diameter sufficient to accommodate at least the actuating cylinder and a multiple medium feed device and preferably at least part of the stroke-control device which can include at least one sensor for the position of the piston.

Abstract: A lockable drill chuck has a body centered on and rotatable about an axis and formed with a plurality of angled guides opening axially forward at a front chuck end, respective jaws axially and radially displaceable in the guides and each formed with a row of teeth, and a tightening ring axially fixed but rotatable about the axis on the body and having a screwthread meshing with the teeth so that rotation of the inner ring on the body in a tightening direction displaces the jaws in their guides toward one other and rotation in a loosening direction displaces the jaws away from one other. A one-piece outer sleeve rotatable about the axis on the body is formed unitarily with a pressed-in radially inwardly projecting cam formation.

Abstract: A drill chuck has a chuck body centered on an axis and formed with a forwardly open seat and with a plurality of angled guides spaced angularly about the axis and open forward into the seat. Respective jaws slidable in the guides each have a toothed outer edge meshing with a screwthread of a tightening ring rotatable about the axis to axially and radially displace the jaws in the body. An adjustment sleeve rotationally coupled to the ring is rotatable about the axis on the body. It has an outer grip surface of a predetermined outer diameter and an indicia band axially offset from the grip surface and of an outer diameter smaller than the outer grip surface.

Abstract: A lathe steady rest has a frame adjacent an axis about which a lathe rotates a workpiece, a pair of arms pivotal on the frame about arm axes parallel to the workpiece axis and having outer ends radially displaceable relative to the workpiece axis, and a slide displaceable radially of the workpiece axis on the frame and having an outer end turned toward the workpiece. The outer ends are angularly spaced about the axis. Respective rollers rotatable on the outer ends about roller axes parallel to the workpiece axis radially engage the workpiece. Respective caps mounted on the arm outer ends over the respective rollers have passages with outer ends directed radially inward against the workpiece adjacent the respective rollers. A fluid is supplied under pressure to the passages to flush particles from the workpiece. The chamber allows the respective cap to change position without losing pressure in its passages.

Abstract: A chuck has a chuck body adapted to be rotated about a chuck axis and formed with a plurality of axially forwardly open passages each having a pair of angularly confronting side faces, respective guides pivotal in the passages about respective guide axes extending secantally of the chuck axis, and respective elongated jaw arms axially slidable in the guides. Each jaw arm has a pair of oppositely angularly directed side faces angularly confronting and spaced from the respective passage side faces. Two guide plate in each of the passages each have an outer face engaging one of the respective passage side faces and an inner face engaging the respective arm side face. These plates are releasably fixed in the chuck body.

Abstract: A chuck has a chuck body adapted to be rotated about a chuck axis and a plurality of elongated jaw arms angularly spaced about the axis, pivotal in the chuck body about respective guide axes extending secantally of the chuck axis, and axially slidable in the body. Each jaw arm has a front outer end formed with a generally axially extending and radially inwardly directed outer face and an axially outwardly and forwardly directed inner face extending radially inward from an axially inner end of the outer face. Each outer face converges axially outward with the chuck axis and forms a small acute angle with the chuck axis. Respective jaw inserts each have a pair of faces complementary to and flatly engaging the respective jaw faces. These inserts are releasably secured to the jaw outer ends with the insert faces bearing on the jaw faces. The faces are planar. In addition each insert is formed with at least one throughgoing hole extending substantially parallel to the outer insert face.