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WO/2021/001744A1 |
The disclosure is generally directed to abrasive rotary tools capable of expanding into a substrate. Exemplary abrasive rotary tools include an expandable collet configured to expand an abrasive surface of the abrasive rotary tool. The e...
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WO/2021/000550A1 |
An anti-loosening locking drill chuck comprises a drill body (1), a gripping jaw (2), a nut (3), a front sleeve (4), and a rear sleeve (5). An anti-loosening locking assembly is provided between the nut (3) and the drill body (1). The an...
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WO/2020/259754A2 |
The invention relates to a quick-change system (1, 1') comprising at least one receiving part (2) and at least one exchange tool (3, 3'), wherein the receiving part (2) has at least one receiving opening (4) for receiving each exchange t...
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WO/2020/249551A1 |
The invention relates to a clamping device (1) for releasably holding a tool holder shank (33). The device comprises a housing (2), a drawbar (6) being mounted reciprocally movable inside a bore (5) in the housing, a wedge engagement mem...
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WO/2020/249550A1 |
The invention relates to a clamping device (1) for releasably holding a tool holder shank (33). The device comprises a housing (2), a drawbar (6) being mounted reciprocally movable inside a bore (5) in the housing, and an actuator (8). A...
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WO/2020/243878A1 |
A chuck (10) is provided that includes a plurality of jaws (20) and a body (30) configured to rotate with a drive spindle of a power driver. The chuck (10) may also include a nut (80) comprising nut teeth (82). The nut (80) may be operab...
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WO/2020/245000A1 |
The invention relates to a drive device for clamping and releasing a tool in the tool receiving area of a tool holder. The drive device according to the invention prevents incorrect operations. The drive device can be actuated manually o...
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WO/2020/234536A1 |
A gripping clamp (200) comprises a casing (202) which defines, internally, the chamber (210) of a cylinder (216), this casing (202) comprising a lid (208) which closes access to the interior thereof, and gripping members (204), each subj...
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WO/2020/233744A1 |
The invention relates to a modular pneumatic cylinder (1) comprising multiple cylinder stages (4), a cylinder base (2), and a cylinder head (3). An axial longitudinal bore (5) is provided which runs between the cylinder base and the cyli...
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WO/2020/231793A1 |
Improvements in tooling for machining systems that utilize machining fluids comprising a supercritical fluid are disclosed. In some embodiments a tool may include a plurality of orifices configured to direct a supercritical machining flu...
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WO/2020/226060A1 |
In the present invention, a plurality of operation pin members (4) are provided which are inserted into a housing (3). These operation pin members (4) each have a wedge surface (12c). As the operation pin members (4) are pressed into the...
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WO/2020/220420A1 |
Disclosed are a clutch device, a drill chuck, a power tool, and a bidirectional rotation method of the drill chuck. The clutch device comprises a return elastic member (216), a transmission assembly and a rotating portion (203), wherein ...
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WO/2020/218130A1 |
The present invention provides an opening/closing apparatus (20) comprising a pushing/pulling device (200) that controls releasing and supporting of a workpiece support mechanism (71) provided to the front side of a main spindle (12) by ...
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WO/2020/216411A1 |
The invention relates to a clamping jaw having a jaw base part (1) which can be connected to a jaw end piece (2) having a clamping surface (3), the clamping surface (3) being capable of being placed against an object to be clamped. The j...
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WO/2020/216074A1 |
Disclosed is an external-gripping-type gripper, comprising a support structure (1); and a first elastic piece (2). The first elastic piece (2) is in sealed connection with the support structure (1) in the mode of covering the support str...
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WO/2020/216997A1 |
The invention relates to fastening an object onto a lathe, such that the location of the centre of rotation of the object may be adjusted relative to the centre of the lathe axis. By means of the invention the centre of rotation of the o...
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WO/2020/217387A1 |
The present invention provides a rod material feeding device of a rod material supplying machine, the rod material feeding device being provided with: a rod material gripping member that grips the rear end section of a rod material; a ro...
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WO/2020/212132A1 |
The invention relates to a clamping jaw for a chuck (1), having a jaw body (6) on which at least one jaw step (7) is formed, having a T-shaped step head (9), formed by two lateral grooves (8), for holding a clamping insert (10) that is i...
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WO/2020/200817A1 |
The invention relates to an expanding mandrel having a sleeve-like main part (2) in which an adjusting rod (3) for adjusting at least one sliding pin (4) supported by the wall of the main part (2) is longitudinally movably arranged. A gu...
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WO/2020/202768A1 |
This belt polishing tool (10) is provided with: a main body part (20); a shank part (12) coupled to the main body part; a power generation part (28); an endless polishing belt (40); a drive roller (34) that rotatably supports the polishi...
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WO/2020/193354A1 |
The invention relates to a method for determining the clamping force of a force-actuated, rotationally driveable clamping device (2) of a machine tool (1), comprising the steps of clamping of an object (5) with an actuation force F, mode...
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WO/2020/192797A1 |
An automatic chuck device, comprising: a mechanical chuck (1301), a mechanical chuck mounting support (1305), a hydraulic motor (1302), a lifting mechanism (1303), a chuck key (1306), and a lifting cylinder (1304). The mechanical chuck (...
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WO/2020/196582A1 |
This dust-proof mechanism of a chuck is provided with: a fluid supply source; an internal space provided inside the chuck; and a discharge space provided to the chuck. The fluid supplied from the fluid supply source is supplied to the in...
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WO/2020/184465A1 |
A gear-material holding device 1 has: a machine-tool connection member 2 that is connected to a machine tool y; a holding member 3 that has a hollow cylindrical portion 5 to be brought into contact with the side wall of a circular hole x...
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WO/2020/179674A1 |
[Problem] To provide a structure capable of reducing the risk of human errors when reproducing the relative positions of two members by following the precedent. [Solution] According to an embodiment of the present invention, a structure ...
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WO/2020/176967A1 |
A collet-type mechanism for releasably gripping either an external or internal target surface of a tubular workpiece includes a collet receiver defining a collet receiver contact surface configured as a curved lateral surface of a trunca...
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WO/2020/174272A1 |
An electrospindle comprising: a motor (2); a traction shaft (3) operatively coupled to the motor (2) having a first end (4) configured to receive and hold a tool; a pneumatic circuit for translating the traction shaft (3) to arrange it a...
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WO/2020/176023A1 |
The present disclosure relates to a tool holding arrangement (1, 1', 1'') comprising a rotatable shaft (2, 2', 2'') which is at least connectable to a tool driving power source (3) and comprises a first shaft thread (4, 4'). The tool hol...
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WO/2020/171172A1 |
[Problem] To provide a hydraulic clamp device that can find a workpiece gripping start point on workpieces each having variations in dimensions within a tolerance. [Solution] This hydraulic clamp device, in a portion where a main body 12...
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WO/2020/169329A1 |
The chuck comprises a base body (1) and a rotatable outer casing (2), the outer casing (2) having inner guides (15) and a plurality of jaws (3) movable along the inner guides (15). The chuck is provided with a mechanism (4) linking rotat...
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WO/2020/169621A1 |
The invention relates to a tool receptacle (2) for receiving a rotationally drivable cutting tool, comprising a main body (4), which extends along an axis of rotation and is functionally divided into a clamping portion (6) for receiving ...
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WO/2020/162813A1 |
Chuck arrangement (100) associated with radial, axial and angular directions. The chuck arrangement comprises at least three chuck jaws (110,120,130), each arranged to, in an assembled state, be radially displaceable into a respective cl...
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WO/2020/162812A1 |
Chuck arrangement (100) comprising at least three chuck jaws (110, 120, 130), each arranged to be radially displaceable into a respective clamping position in which it applies a radial clamping force (C) to a held workpiece (W). Each chu...
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WO/2020/162814A1 |
Chuck arrangement (100) comprising at least three chuck jaws (110, 120, 130), each arranged to be radially displaceable into a respective clamping position in which it applies a radial clamping force (C) to a held workpiece (W). Each chu...
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WO/2020/143873A1 |
The invention relates to a clamping jaw assembly, comprising a main jaw (2), on which at least one structure (3) for fastening a clamping insert (4) is formed, and comprising a clamping insert (4), which is fastened to the structure (3) ...
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WO/2020/129417A1 |
The present invention provides a lathe which makes it possible to facilitate the maintenance of a chucking mechanism. An opening/closing device 6 is provided with hook members 20 and a shifter 10, and opens and closes a gripping part 60 ...
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WO/2020/129416A1 |
Provided is a lathe in which it is possible to shorten a spindle in the axial direction of the spindle. A spindle (52) having a holder 60 provided to a front part thereof is rotatably supported via bearings B1, B2 on a support 53. An ope...
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WO/2020/126545A1 |
The invention relates to an axle arrangement (10) for a machine tool. In an axle housing (11), a receiving spindle (12) is mounted so as to be rotatable about a longitudinal axis by means of a spindle bearing arrangement (13). The receiv...
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WO/2020/126107A1 |
The collet chuck according to the invention comprises at least one collet (19) having a locking element (33) which is inclined radially and a pretensioning means (43) provided in the collet and allowing the tool shank (12) of a tool (11)...
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WO/2020/129418A1 |
Provided is a lathe that can extend the lifespan of shifter bearings. An opening/closing device 6 has a gripping unit 60 which is provided to a main shaft 52 and comprises claw members 20, a shifter 10 and a drive unit DR1. The claw memb...
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WO/2020/121351A1 |
A feeding apparatus (1) for feeding semi-finished products (2) which have an elongate shape along a feeding line (4) of a machine tool, comprising an elongate rod-shaped body (6) positioned longitudinally to the feeding line (4), support...
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WO/2020/113703A1 |
A switch device, a drill chuck, and a bidirectional rotation method for the drill chuck. The switch device comprises a switch sleeve (200) and a clutch mechanism; the clutch mechanism comprises a first transmission portion (201) and a se...
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WO/2020/110931A1 |
The objective of the present invention is to provide a chuck device having a compact jaw release mechanism.　The present invention provides a chuck device provided with a chuck main body portion, a plurality of jaws installed on a front...
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WO/2020/108770A1 |
A tool supporter (10) with an adjustment system (60) and a method for aligning a tool using the same are provided, wherein the tool supporter (10) has a tool supporter body (20) which defines a longitudinal tool-supporter-rotation-axis (...
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WO/2020/098546A1 |
A five-jaw self-centering clamping fixture, comprising a bottom plate (1) and clamping components. The clamping component comprises a rotating disc base (2), a rotating disc (3), a compression component (4), and a push component (5). The...
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WO/2020/090779A1 |
A chuck claw coupling mechanism comprising: a coupling member provided inside a master jaw; a first elastic member; and a working section. The coupling member is movable between: a coupled position for coupling to the claw; and a separat...
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WO/2020/090780A1 |
A chuck claw guide structure having: a guide space demarcation section that demarcates a guide space connected to an attachment groove; and a restriction section provided in the guide space demarcation section. The guide space demarcatio...
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WO/2020/084766A1 |
This rotational force transmission mechanism is equipped with: a shaft that rotates around a first axis; and an engaged component that moves along the first axis between a first position and a second position, and that rotates around the...
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WO/2020/077143A1 |
A multi-size tool bit holder includes a first sleeve having a first bit holding bore extending along an axis, and a second sleeve coupled for co-rotation with the first sleeve and movable relative to the first sleeve between a first posi...
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WO/2020/072511A1 |
A chuck (10) includes a jaw guide (64), interleaving jaws (66), and an inclined engagement surface (84). The jaw guide defines a longitudinal axis (24) and includes jaw channels (65) circumferentially distributed about the axis. The jaws...
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