Abstract: A saw blade hand tool structure includes a handle, an internal insert plate installed in the handle, an assembly head installed at an end of the handle and having an accommodating space with an abutting slope, an elastic element installed between the assembly head and the handle, a tightening assembly formed by a plate, a spring, a displacing member and locking pins, and a saw blade. A recess is formed on the plate which is installed in the assembly head; the locking pin is secured with the internal insert plate; the spring is sheathed on the displacing member which passes into the through hole of the internal insert plate; the displacing member is abutted by the abutting slope of the assembly head; and the saw blade is inserted into the assembly head and positioned by an end of the displacing member to prevent the saw blade from falling out.

Abstract: A cutting tool includes a tool holding system having a clamping portion. The clamping portion includes an integrally formed one-piece inner coupling member that at least partially forms a clamping sleeve portion having a clamping bore for clampingly receiving a cutting insert. The clamping portion also includes an integrally formed one-piece outer coupling member that is circumferentially disposed about at least a portion of the inner coupling member. The tool holding system also has a mounting portion that is connected to one of the inner and outer coupling members. The inner and outer coupling members are captively and non-releasably engaged with each other via inter-engaged first and second engagement surfaces that are slidingly displaceable with respect to each other.

Abstract: A tool clamping device, in particular a saw-tool clamping device, for a portable power tool, includes at least one clamping unit configured to clamp-in a machining tool, which comprises at least one movably mounted release element configured to transfer the clamping unit into a releasing position, at least one clamping element configured to produce a clamping-in force acting on the machining tool, at least in a state of the machining tool in which the machining tool is connected to the clamping unit, and at least one movement-arresting element configured to arrest at least one possibility of movement of the release element in at least one state. The movement-arresting element is fixedly connected to the clamping element.

Abstract: The disclosure provides a device for milling wheel window burrs on line, which is composed of a frame, a base plate, a lifting cylinder, a first bracket, a bearing base, a linear bearing, a mounting plate, a guide shaft, a lifting shaft, a first servo motor, a first synchronous pulley, a connecting plate and the like. The device comprises a lifting portion, in which the base plate is fixed on the frame, the mounting plate is fixed on the base plate via the first bracket, the bearing base and the lifting cylinder are fixed on the mounting plate, and the lifting shaft is mounted on the bearing base via the linear bearing.

Abstract: The present application provides a device for correcting an aluminum alloy wheel, which is mainly composed of a frame, an expansion cylinder, a correction motor, a feed motor and the like. A hub positioning unit initially positions a hub to prepare for positioning a center hole expansion sleeve; a hub feed unit performs precise center hole positioning on the hub and completes upward feed movement of the hub; and a tool correction unit completes hub correction through a rotating standard correction cutter head. The device may meet the process requirements of wheels in flow production, improve the runout and balance qualified rate of products, and solve the problems of decentraction of the outer diameter in the first procedure and the second procedure and deformation of rim bulges.

Abstract: The present application provides a method for machining a flange face of an aluminum alloy hub, comprising the steps of: (I) pre-machining a hub flange; (II) machining two times with a 120° R3 boring tool with a total machining amount of 2 mm, and then reserving a machining allowance of 2.4 mm on the flange face blank after processing; (III) machining two times with the 120° R3 boring tool with a total machining amount of 2 mm, and then reserving a machining allowance of 0.4 mm on the flange face blank after processing; (IV) machining with a 95° R0.8 hook tool, and then reserving a machining allowance of 0.05 mm on the flange face after processing; and (V) machining with the 95° R0.8 hook tool, then machining the remaining flange allowance, thus completing the machining.

Abstract: A robotic tool changer includes a locking feature, and may be made washable by sealing against fluid incursion. The tool changer comprises a master unit and one or more tool units, and it transitions between decoupled and coupled states by rotation of one part relative to another. The rotation displaces rolling members in the master unit, such as balls, from a retaining surface to a locking surface which is sized and positioned to force the rolling members against a coupling surface of the tool unit. A deformable pin interposed between the retaining and locking surfaces resists movement of the rolling members therebetween, requiring the application of force. The pin remains deformed, and continues to exert a force on the rolling members, when the robotic tool changer is in the coupled state, providing a locking feature which automatically and positively resists any inadvertent decoupling of the tool changer.

Abstract: A joint structure for an air nozzle contains a valve joint connected on an air nozzle to fill air, with the air nozzle including outer threads defined around an outer peripheral side thereof. The valve joint includes a body having a hole defined therein, an inlet communicating with the hole, and at least one orifice penetrating from an exterior environment to the hole. At least one limiting member is secured and moves in the at least one orifice and has meshing teeth formed on one end thereof to correspond to the hole. The meshing teeth engage with the outer threads of the air nozzle. The at least one limiting member has a defining segment arranged on another end thereof. A controlling assembly is fitted on the body and is used to control the at least one limiting member to move in the at least one orifice.

Abstract: Methods and apparatus for twisting rectangular rotor and stator conductor ends whereby most if not all conductor ends are bent at once, radially adjacent ends being bent in opposite directions. A lost motion member may be used to bend selected conductors through lesser angles for such purposes as phase interconnection and power leads. The rectangular conductors are retained against twisting so that flat conductors will bend about an axis perpendicular to the larger dimension of the conductor cross section. Various features of the methods and apparatus are disclosed.

Abstract: An apparatus for removing a first nut and a differently sized second nut is described. The illustrative apparatus includes a housing, a first cage and a second cage, and a first canted coil spring and a second canted coil spring. The illustrative housing has a top surface, a first interior sidewall, a bottom surface and a second interior sidewall. Each illustrative interior sidewall includes a lobed cam and a groove. Each cage includes jaws that grip the respective nut, and each cage also includes a groove. The canted coil springs are disposed in the grooves corresponding to the cage and the housing.

Abstract: An electric hammer has a housing having a nozzle portion, a motor and a transmission mechanism arranged in the housing, a striking device, coupled to the motor and transmission mechanism, for moving in a reciprocating manner in the nozzle portion, and a clamping device mounted to the nozzle portion and at least partially extending out of the nozzle portion. The clamping device includes an outer sleeve, an inner sleeve arranged in the outer sleeve, and at least two clamping members arranged on the inner sleeve. The inner sleeve has a first position and a second position with respect to the outer sleeve and the distance between the two clamping members in the first position is less than the distance between the two clamping members in the second position to thereby allow a nail to be released halfway, i.e., when partially struck into a workpiece, in a simple manner.

Abstract: A cutting tool has a cutting insert and a holder. The cutting insert has a cutting portion and an insert shank with a cylindrical portion and a non-cylindrical portion. The holder has a clamping portion which has a clamping sleeve and a cage located therein. The cage includes a load member housing with a load member. The cage has a major abutment wall adjacent to a minor abutment wall. The clamping sleeve has first and second inner sections defined by points P1 and P2. A point P3 divides the second inner section into first and second portions. The clamping sleeve is rotatable between a secured and a released position of the cutting tool. In the secured position, the non-cylindrical portion abuts the major abutment wall, the cylindrical portion abuts both the minor abutment wall and the load member, and the load member abuts the first portion.

Abstract: Several preferred embodiments are disclosed for a tool-less blade clamping apparatus for a reciprocating tool of the type which has a reciprocating plunger which has a tool attachment receiving slot for receiving a tool attachment of the type that has a shank portion. The clamping apparatus has an unclamped position and a clamped position. In the unclamped position, a tool attachment can be easily inserted and when it is in its clamped position, the tool attachment is securely retained. The preferred embodiments have at least one spring biasing the apparatus toward the clamped position, a releasable retaining mechanism for holding the apparatus in its unclamped position after being placed in that position. When the blade shank portion is inserted into the slot a predetermined distance, the shoulders of the shank portion release the retaining mechanism to move it to its clamped position.

Abstract: In a robotic tool changer, a rotating cam surface ring having a plurality of surfaces formed therein urges a plurality of ball members in one tool coupling unit radially to contact a coupling surface in the other tool coupling unit. Mechanical energy captured and stored upon decoupling the units is used by an actuation mechanism, upon manual initiation, to at least partially automatically couple the two units by partially rotating the rotating cam surface ring. Further manual rotation of the cam member exerts a radial force through the ball members onto the coupling surface. A component of that force is directed by the coupling surface toward the opposite tool coupling unit, locking the two units together.

Abstract: A manual robotic tool changer provides a compact, lightweight means to manually selectively couple a robotic tool, such as a surgical tool, to a robot arm. The tool changer includes numerous safety features to prevent inadvertent decoupling of the robotic tool. These include a dual-button handle locking mechanism operative to lock the tool changer closed in the fully coupled position, and requiring simultaneous actuation of both of two latch buttons to unlock; a one-way clutch mechanism that prevents rotation of the coupling mechanism towards the decoupled position, unless the handle is actuated to unlock the tool changer; and a spring biasing the tool changer to an at least partially coupled state when no force is applied to the handle, thus requiring a positive force against the spring, moving the handle to a fully open position, to insert or remove a robotic tool.

Abstract: Devices are described relating to the retaining of surgical tools within the chuck of a reciprocating surgical instrument, such as a reciprocating saw. A securing chuck is disclosed for securing a surgical tool to a reciprocating surgical instrument that comprises a shaft and a securing member. The shaft defines an axis and has a cylindrical bore extending along the axis. The bore is shaped to receive a substantially rounded tool shank. A pair of transverse slots extends into the shaft along a plane passing through the axis for receiving a substantially flattened tool shank. The transverse slots intersect with the cylindrical bore. The securing member is carried by the shaft and is radially movable relative to the bore both inwardly and outwardly to secure the surgical tool in the chuck.

Abstract: Several preferred embodiments are disclosed for a tool-less blade clamping apparatus for a reciprocating tool of the type which has a reciprocating plunger which has a tool attachment receiving slot for receiving a tool attachment of the type that has a shank portion. The clamping apparatus has an unclamped position and a clamped position. In the unclamped position, a tool attachment can be easily inserted and when it is in its clamped position, the tool attachment is securely retained. The preferred embodiments have at least one spring biasing the apparatus toward the clamped position, a releasable retaining mechanism for holding the apparatus in its unclamped position after being placed in that position. When the blade shank portion is inserted into the slot a predetermined distance, the shoulders of the shank portion release the retaining mechanism to move it to its clamped position.

Abstract: A tool with a replaceable tip includes a tool body including a tip holding portion, a tool tip having a shank portion adapted to be disposed proximate the tip holding portion comprising a wall defining an axial opening, the wall having at least one radial opening, at least one locking element being disposed in the radial opening, and, as a clamping ring is turned about the longitudinal axis of the tool body, a locking element contacting surface of the clamping ring contacts the locking element and urges it through the radial opening and into the recess in the tool tip. A method of retaining a tool tip is also disclosed.

Abstract: An auto hammer having a housing, a grip portion and a striking device. The striking device includes a striking rod for striking a nail or other element using a straight reciprocating motion. The striking device has an associated clamping mechanism for clamping the nail or other element. The clamping mechanism has a driving portion, a first clamping portion, and a second clamping portion. The first and second clamping portions are moved between a closed position and an opened position. In the closed position, the element is held between the first and second clamping portions. A first slot and a second slot are arranged on the first and second clamping portions respectively. The driving portion is arranged in both the first and second slots and moves along the first and second slots.

Abstract: A holding fixture includes a first part, a securing member and a second part. The first part includes a first end face and a sleeve extending from the first end face, the sleeve defines a plurality of radial through holes each receiving a ball therein, and each ball has a diameter larger than the wall thickness of the sleeve therein. The securing member located around the sleeve includes a plurality of protrusions configured on an inner wall thereof, with every two neighboring protrusions defining a notch therebetween. The second part includes a body and a tail fixed on the body, with seating thereof in the sleeve enabled by an annular groove in the periphery thereof. The protrusions guide the balls into the annular groove to secure the second part on the first part.

Abstract: A reciprocating tool that includes a spindle that reciprocates with respect to a housing within a cavity of the housing. The reciprocating tool includes a blade clamp mechanism actuator coupled to the housing for movement with respect the housing between first and second positions. The spindle reciprocates with respect to the blade clamp mechanism actuator. A blade clamp mechanism is coupled to the spindle for reciprocating movement therewith, and the blade clamp mechanism is configured to attach the saw blade to the spindle. The blade clamp mechanism includes a collar mounted on the end of the spindle, and the collar is rotatable about the longitudinal axis of the spindle between an engaged position and a disengaged position in response to movement of the blade clamp mechanism actuator between the first position and the second position.

Abstract: A capping chuck assembly embodying the present invention comprises an outer chuck housing, and inner, central guide disc upon which a plurality of circumferentially spaced gripper segments are mounted. Each gripper segment includes an inner jaw portion for engagement with an associated closure, and an outer cam surface. The outer chuck housing defines a plurality of inwardly facing, cam drive surfaces positioned for respective engagement with the outer cam surfaces of the gripper segments, so that rotational drive of the outer chuck housing collectively drives the gripper segments and guide disc to urge the segments radially into engagement with an associated closure.

Abstract: In a robotic tool coupler, a rotating cam member having a plurality of surfaces formed therein urges a plurality of ball members in one tool coupling unit radially to contact an angled surface in the other tool coupling unit. Further rotation of the cam member exerts a radial force through the ball members onto the angled surface. A component of that force is directed by the angled surface toward the opposite tool coupling unit, locking the two units together. The cam member may include a failsafe surface and/or a failsafe lobe to maintain the two units locked together in the event of a loss of power to positively actuate the cam member.

Abstract: Embodiments are disclosed for a tool-less clamping apparatus for a reciprocating tool having a reciprocating spindle having a center axis and at least one radially oriented aperture and a receiving slot at its forward end for receiving a tool accessory, the apparatus having an unclamped position and a clamped position, and comprising a hollow generally cylindrical sleeve secured to the spindle, a hollow generally cylindrical collar configured to fit on the sleeve and being rotatable relative to the spindle and the sleeve, the collar having an inner cam surface that increases in radius from the axis through a first predetermined circumferential arc in a first direction, a spring operatively connected to provide a biasing force to the collar toward its clamped position, and a detent pin positioned in the spindle aperture and configured to engage a hole in the tool accessory and thereby firmly hold the tool accessory in the apparatus when urged into contact with the tool accessory.

Abstract: A robotic tool changer comprises first and second units, operative to be separately attached to a robot and a robotic tool, and further operative to be selectively coupled together and decoupled. The first and second units are coupled and decoupled by an electric motor. Power from the electric motor may be applied to couple and decouple the first and second units in a variety of ways.

Abstract: A cutter adapter includes a holder having a receiving portion for inserting a cutter therein; a sleeve sleeved onto the holder and having an annular bevel; a lock pin inserted into the holder and having an active end and a passive end, the passive end being squeezed by the annular bevel when the sleeve is moved, the active end being inserted into the cutter when the passive end is squeezed; and a biasing pin located in the receiving portion and pushed by a spring mounted in the receiving portion. In this way, when intending to mount the cutter to the cutter adapter, the user only needs to insert the cutter into the receiving portion to force the biasing pin to disengage from the lock pin, the lock pin being forced by the annular bevel to insert the active end into the receiving portion to hold the cutter.

Abstract: A hand-held power jigsaw includes a clamping device which has an insertion slot (26) for a shaft (153) of the tool and has a transverse aperture (27) extending transversely to the insertion slot (26) and opening out into it. A clamping element (19) for clamping the shaft (153) can slide in the transverse aperture (27) and travels into the insertion slot (26) at one end and protrudes out from the transverse aperture (27) at the other end. A centering piece (18) has a rotatable clamping sleeve (20) equipped with a clamping curve (28) that slides the clamping element (19), equipped with a clamping spring, which engages the clamping sleeve (20) and rotates the clamping sleeve (20). The centering piece (18) has two transverse apertures (27) and in which two clamping elements (19) are supported opposite each other in a movable fashion.

Abstract: A tool includes a shank having an engaging hole for receiving one end of a tool member and having a number of orifices for receiving detents, a control ferrule rotatably engaged onto the shank and having a number of notches each of which includes a deeper portion for selectively receiving the detents and for disengaging the detents from the tool member and a shallower portion for selectively forcing and actuating the detents to engage with the tool member and to detachably couple the tool member to the shank, and a spring member may actuate the shallower portions of the notches of the control ferrule to engage with the detents and then to detachably couple the tool member to the shank.

Abstract: Several preferred embodiments are disclosed for a tool-less blade clamping apparatus for a reciprocating tool of the type which has a reciprocating plunger which has a tool attachment receiving slot for receiving a tool attachment of the type that has a shank portion. The clamping apparatus has an unclamped position and a clamped position. In the unclamped position, a tool attachment can be easily inserted and when it is in its clamped position, the tool attachment is securely retained. The preferred embodiments have at least one spring biasing the apparatus toward the clamped position, a releasable retaining mechanism for holding the apparatus in its unclamped position after being placed in that position. When the blade shank portion is inserted into the slot a predetermined distance, the shoulders of the shank portion release the retaining mechanism to move it to its clamped position.

Abstract: A reciprocatory saw, in particular, a jigsaw, is made up of a pitman with a chuck arranged for the releasable clamping of a saw blade. The chuck contains a movably mounted chuck jaw arrangement able to be clamped laterally against the saw blade shank, a wedge element arrangement adjacent to and for cooperation with the chuck means, a first spring acting downwardly on the inserted saw blade and a second spring acting on the wedge element arrangement downwardly. The wedge element arrangement is connected with the chuck jaw arrangement in a manner for the transmission of rotary movement and from the outside and is able to be shifted between a bottom clamping position clamping the chuck jaw arrangement against the saw blade shank and a top release position freeing the chuck jaw arrangement. The wedge element arrangement assumes an angular position turned in relation to the clamping position and is seated on a stationary holding face.

Abstract: A rotating log saw clamp for clamping a product roll to be sawn. The rotating log saw clamp includes a first portion disposed for rotation about an axis and a second portion disposed for rotation with the first portion and movable relative to the first portion between an open position and a clamping position. The second portion is rotatable from the clamping position to the open position by relative rotation of the first and second rotating portions in a common direction.

Abstract: Arrangement for holding a tool fitting has a spindle with a forward directed surface and a bore which intersects the forward directed surface and which, starting from such surface, extends rearwardly in order to receive a shaft of the tool fitting. A device for locking the tool fitting with the spindle has an inner and an outer locking element which engage on another. The locking elements act in the manner of a bayonet coupling, wherein a projecting element is disposed in a blind stop groove extending first axially and subsequently radially in a circumferential surface starting from an end face.

Abstract: The present invention generally provides a saw blade clamping assembly. The assembly has a main body, a clamping device, a rotating sleeve and a biasing device. The main body has a receiving slot for receiving a fixing end of a saw blade and an oblique and elongate hole communicating with the receiving slot. The clamping device has at least one clamping member passing through the oblique and elongate hole of the main body. The rotating sleeve encloses the main body and the clamping device. The biasing device is biased between the main body and the rotating sleeve.

Abstract: A lock body in a locked state is inserted radially inward of an outer surface. A stopper body in a contact state holds the lock body in an unlocked state. The stopper body in a non-contact state is retracted from the lock body. A pressing body is switchable between a standby state and a retracted state. The pressing body in the standby state selectively contacts a central shaft when an insertion portion is inserted in a support cylinder. The pressing body in the retracted state is retracted from the stopper body. An urging member urges the pressing body into the standby state, and urges the stopper body into the contact state. The urging member detachably engages the pressing body to the stopper body. Thus, the structure of the cutter holder is simple.

Abstract: The present invention relates to tools with replaceable tips and, more particularly, to arrangements for securing replaceable tips to tip holders. The tool includes a tip including a working end, a connecting end, and a radially extending abutment surface; a tip holder including a mating end for mating with the connecting end and a radially extending supporting surface for abutting against the abutment surface to limit axial movement of the tip relative to the tip holder. The connecting end is non-circular and includes a groove. The tool includes an assembly including the tip and the tip holder arranged such that, upon relative rotation of the tip and the tip holder in a connecting direction, an axial force is exerted on the groove and causes the abutment surface to move toward the supporting surface.

Abstract: A reciprocatory saw and in particular a jigsaw comprises a pitman with a chuck means arranged for the releasable clamping of a saw blade. The chuck means comprises a movably mounted chuck jaw arrangement able to be clamped laterally against the saw blade shank, a wedge element arrangement adjacent to and for cooperation with the chuck means, a first spring means whose spring force acts downwardly on the inserted saw blade and a second spring means whose spring force acts on the wedge element arrangement downward. The wedge element arrangement is connected with the chuck jaw arrangement in a manner for the transmission of rotary movement and from the outside and is able to be shifted between a bottom clamping position clamping the chuck jaw arrangement against the saw blade shank and a top release position freeing the chuck jaw arrangement. The wedge element arrangement assumes an angular position turned in relation to the clamping position and is seated on a stationary holding face.

Abstract: A chuck (2) for a hand-held power tool (4), which is connected with a motor-driven spindle (6) of the power tool for joint rotation therewith, includes a locking device for securing a shaft section of an exchangeable working tool and having a circular cross-section in the chuck (2) without a possibility of axial displacement and rotation relative to the chuck (2), with the locking device having a clamping element (12; 34) for securing the shaft section (8), and an element (18) for transmitting rotation to the shaft section (8) and rotationally separated from the clamping element (12; 34) by a rotary bearing (2).

Abstract: A surgical instrument holder has a shank having a coupling end, a handle attached to an opposite end of the shank, a coupling device, and a locking mechanism. The coupling end has an interface thereon for receiving an instrument. The locking mechanism has an annular locking component, a spring, a ring which slides on the shank, and a locking device. The annular locking component is mounted so as to slide along the shank. The locking device cooperates with the locking component so as to lock the instrument onto the interface. The spring biases the locking component in a locking direction and bears on the ring. The ring is disengageably lockable to the shank via a connection device so as to enable quick disassembly for cleaning and component sterilization.

Abstract: Tool-switching device for a machine for measuring coordinates wherein the tool is fastened on the tool-carrier and held by the action of elements exerting an axial force. The locking force is taken over symmetrically by the elements of a Boys connection, which increases the repeatability of the connection; in one embodiment, two pins or spheres are driven by a sliding bushing provided with two “V”-shaped slits or with two lateral gorges. In the subsequent embodiments, the pins are replaced by spheres, by levers or by a stirrup.

Abstract: An adjustable socket having first and second jaw members having manually selectable sizes. An exterior drive unit and a moveable inner driver unit each having serrated interlocking teeth are positioned to either engage during wrenching, or to be disengaged for socket size manual adjustments. The opposing first and second jaw members are forced by axial rotation of a spiral cam element located on the open top end of the outer drive unit to move laterally, inward or outward, when a user pulls the inner driver unit in a first direction and rotates the inner drive unit such that the first and second jaw members are positioned to engage a selected fastener head.

Abstract: The present invention relates to a quick-change saw blade clamping device which includes an output shaft, a cylindrical rotatable sleeve and a torsion spring. The output shaft is coupled to a blade carrier which is disposed within the cylindrical rotatable sleeve. A rotatable member is disposed within the cylindrical rotatable sleeve. A locking member pivotally connected to the blade carrier lies in a guide groove which is formed on the blade carrier. A spiral surface is formed on the front end of the rotatable member. When the cylindrical rotatable sleeve is manually rotated, the spiral surface urges the locking member to press the blade into a locking position. The present invention provides an easily-operated clamping device of simple structure and small size.

Abstract: An electric cutting tool has a body, a chuck at an end of the body for attaching a cutting implement having a rear end including a recess, and a drive mechanism for driving the chuck to slide in reciprocation for operating the cutting implement. The chuck has a gap for receiving the rear end of the implement, an internal multi-part fixing mechanism for engaging the recess of the cutting implement in the gap, and an outer cylinder having an inner cam surface for acting upon the fixing mechanism. The cylinder is manually rotatable between a locked position in which the cam surface presses the fixing mechanism tight against the recess in the gap to fix the cutting implement in place and an unlocked position in which the fixing means is released from the cutting mechanism. The fixing mechanism includes two discrete balls.

Abstract: A reciprocating saw is provided having a motor oriented within a housing for operably driving a saw bar and blade holder in a reciprocating motion. The blade holder has a longitudinal slot for receiving a saw blade, and a transverse aperture extending into the longitudinal slot for receiving a follower. A sleeve is pivotally mounted upon the body, and has a circum-axial cam groove formed therein cooperating with the follower. Rotation in a first lock direction urges the follower into the longitudinal slot for engaging the saw blade and rotation of the sleeve in a second unlock direction allows the follower to retract. A biasing member is included for biasing the sleeve in the first lock direction. The sleeve central bore is adapted to provide clearance for the follower such that the sleeve is permitted to axially translate relative to the body for assembly or disassembly of the blade holder.

Abstract: A quick change tool cartridge for high production endform machines having a plurality of work stations mounted upon an indexable rotary head. The tool cartridge system is mounted upon the tool support by quick connect radially movable elements or pins radially displaced by a rotatable actuator sleeve. The locking elements cooperate with a groove, or holes, within the tool holder depending on whether or not relative rotation between the tool support and tool holder is desired.

Abstract: A reciprocating saw includes a main body, a blade holding device mounted on the main body, and a blade detachably mounted on the support seat of the main body by the blade holding device. The blade holding device includes a bushing, a slide, a sleeve, a positioning ball, a torsion spring, and a guide rod. Thus, the blade can be mounted on and detached from the support seat of the main body easily and conveniently by rotation of the sleeve, thereby facilitating the user replacing the blade.

Abstract: An improved tool-holder fixture, more specifically for tool holders, pincer holders and mill holders, designed for the mounting and dismounting thereof, which comprises a cage body (1) constituting the main support body for a needle bearing (2), a cover (3), a roller cage (4), rollers (5), a top cover (6) and screws (7) for fastening same.

Abstract: A drill chuck has a chuck body centered on an axis and forming an axially forwardly open bit-receiving recess, an axially forwardly open polygonal-section seat at a base of the recess, and a plurality of jaws spaced angularly around the seat. The jaws can be displaced radially inward and outward to grip a bit in the recess. An element can move in the base of the recess between a blocking position in front of the polygonal-section seat and preventing entry of a bit thereinto and a freeing position clear of the seat and permitting entry of a bit thereinto. This element can be actuated for movement between the blocking and freeing positions either manually or automatically.

Abstract: A removable chuck has a chuck member for holding a drill bit. Also, a mechanism is coupled with the chuck body to retain the chuck body to a drill spindle. The retention mechanism, in a first position, has at least one biased blade, in a non-biased condition, retaining the chuck on the drill spindle and in a second position, with the at least one biased blade in a biased condition, the chuck is enabled to be removed from the spindle.

Abstract: A clamping chuck having a central receptacle and a disk arranged around the receptacle and which may be moved from a clamping position, whereby a draw bar inserted into the receptacle is clamped, to a releasing position wherein a draw bar is released from being clamped. The disk has a locking mechanism including a plurality of locking elements which are equally spaced in a circumferential direction. The draw bar is coupled to a brake such that the braking force of the brake is proportional to a pull on the draw bar. Thus, a high axial load on the draw bar causes a high braking force and a low load results in a low braking force.

Abstract: A tool holder holds a shank of a cutter tool. The tool holder comprises a supporting cylinder. An operation body moves between a locking position and an unlocking position A locking member is supported by the supporting cylinder. The locking member moves radially in accordance with the position of the operation body. An engaging member is located between the supporting cylinder and the operation body. The engaging member moves between an engaging position and a disengaging position. When the engaging member is in the engaging position, the operation body is prevented from moving relative to the supporting cylinder and is held in the unlocking position and when the engaging member is in the disengaging position the operation body is allowed to move relative to the supporting cylinder. This mechanism facilitates smooth insertion of the cutter into the supporting cylinder.