Abstract: A clamping device has a clamp arm pivotally housed inside a body, and a locating section for positioning workpieces is provided on an upper portion of the body. The locating section is formed with a slit hole which enables a claw portion of the clamp arm to protrude outside, and is provided inside with a shutter facing the slit hole and being movable. The claw portion of the clamp arm is inserted through a clamp hole of the shutter. Then, when the clamp arm moves inside the body in the axial direction and rotates, the shutter moves integrally with the clamp arm in the axial direction to cover the slit hole. Thus, the opening portion of the slit hole is suitably covered except that portion occupied by the claw portion so that foreign matter and the like can be prevented from entering the locating section through the slit hole.

Abstract: Provided is a capo that can be operated simply and reliably. A capo includes a pair of arm members (a first arm member and a second arm member) capable of sandwiching a neck, and an electric drive mechanism that changes a distance between the pair of arm members.

Abstract: A method supports a tire building assembly. The method comprises the steps of: supporting one end portion of a radially collapsible building drum for assembling a green tire; moving the end portion in a first direction by an actuator acting in the first direction; and moving the end portion in a second direction by the actuator acting in the first direction.

Abstract: An incremental forming machine binder is provided that has a blank holding opening that may be subdivided into smaller blank holding openings. The opening is subdivided by one or more clamping modules that are connected by connecting modules to each other and the frame. Clamps are attached to the clamping modules to clamp blanks in the blank holding openings. Multiple blanks may be secured to the binder for incremental forming.

Abstract: A method supports a tire building assembly. The method comprises the steps of: supporting one end portion of a radially collapsible building drum for assembling a green tire; moving the end portion in a first direction by an actuator acting in the first direction; and moving the end portion in a second direction by the actuator acting in the first direction.

Abstract: A device for holding a wafer-shaped article comprises an annular chuck base body having a plurality of movable contact elements for securing a wafer-shaped article to the annular chuck base body, and a gear mechanism driving the contact elements in unison between a first position and a second position. The annular chuck base body comprises a housing formed from a material that is resistant to attack by strong inorganic acids. The annular chuck base body also comprises a reinforcing ring fitted within the housing and formed from a material whose coefficient of linear thermal expansion is substantially less than that of the housing material.

Abstract: A clamping device includes a base part, a clamping element arranged such that it can be displaced relative to the base part in order to transmit a clamping force onto a part to be clamped, and a drive unit that displaceably impinges upon the clamping element. The drive unit has a threaded spindle or a threaded sleeve that can be driven rotationally by a motor to directly or indirectly cooperate with a corresponding part of the clamping element in such a manner that rotationally driving the threaded spindle or threaded sleeve effects a displacement of the clamping element and/or a generation of a clamping force.

Abstract: A device for holding wafer-shaped articles, such as semiconductor wafers, is equipped with a series of pins that are brought into contact with a peripheral edge of the wafer-shaped article, under control of a common gear ring or a series of conjointly operated gear sectors. In the regions of the gear ring or gear sectors engaging the pin assemblies, those elements are designed to yield more readily than other regions of the gear ring or gear sectors, to accommodate differential thermal expansion of the chuck components in the vicinity of the pin assemblies.

Abstract: A bar clamp is provided with a slide bar; a movable housing on the slide bar and including a movable jaw carrier including a first jaw at one end, a handgrip, and a trigger handle; a housing member releasably mounted on the slide bar and including a fixed jaw carrier and a second jaw; and a cam type fastening device on fixed jaw carrier. In an inoperative position thin portions of cam rings are locked allow a slide bar of another bar clamp to freely pass through the fastening device. A clockwise pivotal movement of a lever locks thick portions of the cam rings to fasten the slide bar of another bar clamp.

Abstract: A level adjustment device includes a main body, four shaft seats, two adjusting elements, two actuating gears, and a supporting plate. The main body has a side surface and an upper surface connected to the side surface. The main body defines two slots in the side surface. Each two shaft seats are positioned at two opposite sides of a corresponding one of the slots and extend outwards from the side surface. Each of the adjusting elements includes a toothed portion and a supporting portion, the toothed portion movably received in the slot and the supporting portion protruding out of the upper surface. Each of two actuating gears is rotatably sleeved between two corresponding shaft seats and meshes with the toothed portion. The supporting plate is supported on the two adjustment elements above the upper surface.

Abstract: A clamping apparatus includes a motor, a first cone gear secured to a shaft of the motor, and two clamping bodies attached to opposite sides of the motor. Each of the clamping bodies includes a second cone gear meshing with the first, a threaded post fixed to the second cone gear, a carriage threadedly connected with the threaded post, and a clamp arm fixed to the carriage. The motor rotates the first cone gear, and in turn the second cone gears and the corresponding threaded posts. With the rotation of the threaded posts, the carriages move towards or away from each other, whereby the clamp arms cooperatively acquire an object between the clamp arms, or release the object therefrom.

Abstract: Disclosed is a clamping device which reduces the overall size typical clamping devices used for similar operations by implementing a motor as a driving source and maintaining a clamping force applied to a panel constantly through accurate stroke control by incorporating a worm gear. More specifically, the clamping device includes a locator on which a panel is seated and a driving motor incorporated into a portion of the locator. A gear box rotates a rotation rod by receiving a rotational force from the driving motor and a clamper connected with the rotation rod, clamps the panel seated on the locator.

Abstract: A device for holding wafer-shaped articles, such as semiconductor wafers, is equipped with a series of pins that are brought into contact with a peripheral edge of the wafer-shaped article, under control of a common gear ring or a series of conjointly operated gear sectors. In the regions of the gear ring or gear sectors engaging the pin assemblies, those elements are designed to yield more readily than other regions of the gear ring or gear sectors, to accommodate differential thermal expansion of the chuck components in the vicinity of the pin assemblies.

Abstract: A clamping apparatus includes a motor, a first cone gear secured to a shaft of the motor, and two clamping bodies attached to opposite sides of the motor. Each of the clamping bodies includes a second cone gear meshing with the first, a threaded post fixed to the second cone gear, a carriage threadedly connected with the threaded post, and a clamp arm fixed to the carriage. The motor rotates the first cone gear, and in turn the second cone gears and the corresponding threaded posts. With the rotation of the threaded posts, the carriages move towards or away from each other, whereby the clamp arms cooperatively acquire an object between the clamp arms, or release the object therefrom.

Abstract: A small-sized electric positioning and clamping apparatus is provided. A panel material is supported on a workpiece supporting face and is positioned by a locating pin being fitted into a positioning hole. A clamp arm is accommodated in a slit formed in the locating pin, and the panel material is clamped by the clamp arm. The clamp arm is coupled to a driven rod, and the driven rod is coupled to a driving rod via a compression coil spring. A cam face is formed in a cam block assembled reciprocably in a gear box, and an engagement cam contacting with the cam face is attached to the driving rod. The cam block is reciprocated by an electric motor via a reduction gear mechanism.

Abstract: A workpiece-gripping device for tool machines having a motorized chuck mounted on an operating head comprises a housing, a driving shaft journaled in the housing and provided with a shank engageable in the chuck, a locking member configured to engage a reaction member integral with the operating head when the shank engages the chuck, whereby the rotation of the device is prevented when the chuck is driven, and at least a pincer having jaws, of which at least one is movable and operatively connected via transmission means to said driving shaft for opening and closing.

Abstract: A small-sized electric positioning and clamping apparatus is provided. A panel material is supported on a workpiece supporting face and is positioned by a locating pin being fitted into a positioning hole. A clamp arm is accommodated in a slit formed in the locating pin, and the panel material is clamped by the clamp arm. The clamp arm is coupled to a driven rod, and the driven rod is coupled to a driving rod via a compression coil spring. A cam face is formed in a cam block assembled reciprocably in a gear box, and an engagement cam contacting with the cam face is attached to the driving rod. The cam block is reciprocated by an electric motor via a reduction gear mechanism.

Abstract: The invention relates to a stepping gear for a clamping and/or spreading tool having a stationary jaw and a support to which said stationary jaw is fixedly connected and on which a push or pull rod is slideably supported, a movable jaw being fixedly arranged on the push or pull rod, wherein said stepping gear is designed to displace said push or pull rod together with said movable jaw relative to said fixed jaw in an advance direction step-by-step with at least two different stepping sizes and comprises at least one operating arm operateable with at least two lever configurations defined by at least two active levers on said operating arm, wherein a mechanism for switching from a first lever configuration to a second lever configuration is provided and upon an activation of the switching means, particularly in a predefined operating condition, the respective active lever can be activated directly instantaneously.

Abstract: A pieces hold-unit for machine tools such as workstations, transfer machines and milling machines is provided which comprises two parallel supports (12, 13) placed on a plane with at least a first of said support guided, controlled and movable with respect to the other one in order to approach and move them away, at least a first clamp-holder shaft (14) rotary mounted on the said first support and controlled for rotating, a second clamp-holder shaft (15) mounted on the other of said supports. Each shaft holds a clamp opposite to that of the other shaft, and one gear-reduction unit (16) is located at least on board of the support carrying said first shaft to follow the movements of said support and cause the gradual rotation of said first shaft.

Abstract: A pressing board operation mechanism for paper cutter includes an eccentric driving rod to pivot a first link assembly composed of two pairs of triangular plates and the first link assembly is connected to a second link assembly which includes a rack member, two first links and two second links. The two first links are operationally connected to the rack member by two respective rack ends and the two second links are pivotably connected between the first links and the pressing board which is lowered or lifted by the pivotal movement of the first and second links. Two sensors are provided and activated when the first link assembly is moved to a pre-set positions and the sensors send commands to stop the motor.

Abstract: An electrically powered clamp has a housing, a motor attached to the housing, a ball screw driven by the motor via a belt, and a linkage driven at one end by the ball screw such that the linkage rotates an output shaft attached to the other end of the linkage. The motor and belt drive the ball screw between a fully extended position to rotate the shaft to a clamped position, and a fully retracted position to rotate the shaft to an unclamped position. A built-in computer monitors and controls the clamp. The clamp can also be controlled and monitored by a remote pendant. Indicator lights on the housing and remote pendant convey clamp status information. The clamp is programmable and can memorize the clamped and unclamped positions. The clamp uses velocity and position feedback to determine appropriate drive mode. Torque monitors and timers determine if the clamp becomes stuck.

Abstract: An implement comprising a head part and a drive part adjoining the head part in a longitudinal direction. The drive part is associated with an actuating member which is drivable in opposite directions. The actuating member is coupled to a toggle lever mechanism via which mechanism an arm of a toggle-lever device is drivable.

Abstract: The invention provides a clamping device in which there is no need to carry out troublesome setting operation of a clamping position according to a size of a work piece and wear of respective components and an operation efficiency can be further improved. A worm which is engaged with a worm wheel provided to a periphery of a rotating shaft of a clamping arm and which is connected to an electric motor can reciprocate in an axial direction. On the axis, a clamping force applying mechanism to be actuated in response to contact of the rotated clamping arm with the workpiece to apply an axial force in a direction of the axis to the worm is provided. The clamping arm is rotated by driving the worm for rotation by the electric motor and the clamping force applying mechanism applies a clamping force to the clamping arm which has come in contact with the workpiece.

Abstract: An electrically-operated clamping device includes a clamping member pivotally supported by a housing, to rotate between an open and a closed position; the clamping member is connected to electric motor element by a toggle joint mechanism and an axially extendable thrust member. The thrust member comprises a nut screw mechanism, connected to the electric motor element of a geared mechanism having a gear reduction unit and a torque adapter. The electric motor element in turn includes a first and a second electric motor disposed parallel to each other on opposite sides of the thrust member.

Abstract: An actuator system is disclosed for positioning a component interface relative to a work surface, including a first shaft coupled to the worksurface and a counterweight coupled to the first shaft, a second shaft coupled to the worksurface and the component interface coupled to the second shaft, a coupler communicating with the first shaft and the second shaft, a clutch mechanism in operable engagement with the second shaft; and a power source coupled to the second shaft for selectively applying a force to the second shaft when the clutch mechanism is engaged.

Abstract: An electrically powered clamp has a housing, a motor attached to the housing, a ball screw driven by the motor via a belt, and a linkage driven at one end by the ball screw such that the linkage rotates an output shaft attached to the other end of the linkage. The motor and belt drive the ball screw between a fully extended position to rotate the shaft to a clamped position, and a fully retracted position to rotate the shaft to an unclamped position. A built-in computer monitors and controls the clamp. The clamp can also be controlled and monitored by a remote pendant. Indicator lights on the housing and remote pendant convey clamp status information. The clamp is programmable and can memorize the clamped and unclamped positions. The clamp uses velocity and position feedback to determine appropriate drive mode. Torque monitors and timers determine if the clamp becomes stuck.

Abstract: An actuator system is disclosed for positioning a component interface relative to a work surface, including a first shaft coupled to the worksurface and a counterweight coupled to the first shaft, a second shaft coupled to the worksurface and the component interface coupled to the second shaft, a coupler communicating with the first shaft and the second shaft, a clutch mechanism in operable engagement with the second shaft; and a power source coupled to the second shaft for selectively applying a force to the second shaft when the clutch mechanism is engaged.

Abstract: A workpiece holding means for machine tools and more particularly for milling and/or drilling machines, comprising a pivoting bridge supported between two bearing walls. The bearing walls respectively laterally delimit a working area. At least one drive motor serves for pivoting the pivoting bridge, such motor being arranged outside the working area on at least one outer side of the bearing walls. The pivoting bridge is provided with a gear ring adjacent to one or both of the inner sides of the bearing walls, such gear ring being drivingly connected with the drive gear wheel driven by at least one drive motor. The bearing points or bearing pins of the pivoting bridge accordingly do not have to transmit any drive torque and are not subjected to any torque load so that more precise running and more precise positioning is possible.

Abstract: Disclosed is an electric clamp apparatus comprising a rotary driving section for making rotary driving in accordance with an electric signal; a gear mechanism for transmitting rotary driving force of the rotary driving section; a ball screw mechanism for converting rotary motion transmitted by the gear mechanism into rectilinear motion; and a toggle link mechanism for converting the rectilinear motion transmitted by the ball screw mechanism into rotary action of a clamp arm.

Abstract: A mechanic's bench vise which is easy to use and increases the maximum level of clamping force on a workpiece in a pair of jaws of the vise. Another benefit is that it allows a vise to be used performing operations such as installing bushings, die punching holes, and setting rivets. One feature of the invention is that it measures the amount of torque which is applied to the torque arm. The invention broadly comprises a vise having at least one long slender torque arm for opening and closing a pair of jaws of a vise and a ratchet for opening and closing a pair of jaws of the vise. In a first aspect of the invention, the torque arm is not intended to be removed from the vise during normal service. In a second aspect, the length of the torque arm is adjustable. In a third aspect, the torque is removable for shipping and storage and to allow the use of different style and length torque arms.

Abstract: An incremental multiple-forced vise of epicyclic gear train type mainly comprises basic components of vise's main body and movable jaw etc. to accommodate a lead screw, two sets ( i.e. double-layer ) of epicyclic gear train and a buffer device.

Abstract: An apparatus for clamping a work piece on a mounting table includes a driving device mounted inside of a casing, a gear reducer connected to an output shaft of the driving device for reducing the rotational speed of the driving device, a rotatable member being rotatable by a power taking-off mechanism connected to the gear reducer, and a detent member screwably engaged with a rotatable member, in which the detent member is outwardly and inwardly movable with regard to the rotatable member by the rotation of the rotatable member to press the work piece on the mounting table at the time of that the detent member is fixed on the mounting table so as not to be rotated.

Abstract: The clamping device with a mechanical force amplifier comprises a threaded spindle (9) which can be screwed into a stationary nut and is connected rotationally fast with a housing (10) enclosing the force amplifier (13-16). A first clamping member (13) is arranged rotationally fast with, but slidable in, the housing (10) and a second clamping member (14) is arranged rotatably in the housing. A plurality of tightening pins (15) are arranged between the clamping members (13, 14). In between the second clamping member (14) and a drive shaft (28) there is arranged a planetary gear (30). Planetary gear (30) has a sun wheel (31) arranged on the drive shaft (28), an annulus is connected to the housing (10) and a carrier formed by the second clamping member (14). A spring-biased detent coupling (38) is provided between the housing (10) and the second clamping member (14).

Abstract: A workpiece indexing and clamping system for machining the workpiece. Spherical or narrow cylindrical heads of index pins extend from holes in a base plate into workpiece holes to align and index the workpiece. The pin portions in the base plate holes can be expanded to lock them to the base plate. Each pin has relief flats parallel to the pin axis. Clamps engage workpiece edges with thread-like angled grooves on a cam surface to force workpiece edges against the base plate during machining of the workpiece. A central clamp has a pin extending from the base plate into a workpiece hole. Angled grooves in a cam surface are brought into contact with the hole sides to force the workpiece toward the base plate and hold the central area in place during machining.

Abstract: A device for shaping an optionally pressing curved components, such as curved beams of glued laminated girders, is provided which, in a modular type of construction, comprises at least two clamping devices on a base, which are movable. Each clamping device has, as a foundation, a slide that is movable along guides which, for example, are movable with rollers along a pair of rails as guides. In the central part of the slide, a rotary table is rotatable around an axis perpendicular to the slide, on which at least two adjustable clamping elements, symmetrical to the axis of rotation, are provided. To adjust these clamping elements, which can be formed by tighteners, an adjusting device is placed centered on the slide. With this adjusting device, the tighteners are moved toward, and away from, each other symmetrically relative to the axis of rotation in their opposite arrangement. A manual control or a computer-aided control can be used to control the device.

Abstract: The clamp includes a member having an anvil at one end and a threaded bore at another end with a longitudinal bore axis directed at the anvil. A rod having a threads and a longitudinal splines is threadingly disposed within the threaded bore. The rod has a first end, preferably with a handle, and a second end, preferably with a shoe, facing the anvil. A gear matingly engageable with the splines on the rod is rotatably held to the member by a fastener through a central bore. The gear intertwines with the splines on the rod, such that movement of the gear in one direction rotates the rod in an to threadingly move the rod through the bore along the longitudinal axis of the rod. A second embodiment of the clamp includes a member having an anvil at one end and a bore at another end with a longitudinal bore axis directed at the anvil. A rod having a plurality of threads and a pair of longitudinally extending, generally smooth surfaces is disposed within the bore.

Abstract: This invention is a power C-clamp apparatus having a main housing assembly; a power drive assembly mounted within the main housing assembly; a gear drive assembly movable by the power drive assembly; a C-clamp assembly having a movable clamp member axially movable by the gear drive assembly; and a power control assembly operable to selectively control and energize the power drive assembly. The power drive assembly includes a main motor assembly operable through an adjustable clutch assembly to drive the gear drive assembly. The gear drive assembly includes a drive gear member engageable with a driven gear member to selectively move the movable clamp member. The C-clamp assembly includes the movable clamp member and a plurality of interchangable clamp members to cooperate with the movable clamp member.

Abstract: The clamp includes a member having an anvil at one end and a threaded bore at another end with a longitudinal bore axis directed at the anvil. A rod having threads and longitudinal splines is threadingly disposed within the threaded bore. The rod has a first end, preferably with a handle, and a second end, preferably with a shoe, facing the anvil. A gear matingly engageable with the splines on the rod is rotatably held to the member by a fastener through a central bore. The gear intertwines with the splines on the rod, such that movement of the gear in one direction rotates the rod to threadingly move the rod through the bore along the longitudinal axis of the rod. A second embodiment of the clamp includes a member having an anvil at one end and a bore at another end with a longitudinal bore axis directed at the anvil. A rod having a plurality of threads and a pair of longitudinally extending, generally smooth surfaces is disposed within the bore.

Abstract: A guide bar for carrier strip grips the strip ribbon between adjustable pins and can accept a wide range of strip dimensions. The pins project from spring-actuated disks that are recessed into the upper surface of a slide bar. Associated gears at the undersurface of the bar cause pairs of the disks to turn in unison.

Abstract: The invention relates to an apparatus for the automatic mechanical centering and simultaneous clamping of elongate round bodies of various diameter. It consists of two collet chunks arranged at an axial distance from each other in the plane of symmetry of which lies the centering axis. The two chunk arms of each collet chunk include collet jaws each of which is provided with one slide element and one grip element. The effective flanks of the grip elements are concavely curved such that they in each case engage the circumference of the round bodies when the round bodies, sliding along the effective flanks on the slide elements, have been raised by the latter until their longitudinal axes coincide with the centering axis.

Abstract: A holding device for workpieces, which is rotatably mounted in the side-walls of a centrifugal blasting machine, including a support member and holding member. Both members are pivotably mounted diametrically opposed with respect to the axis of rotation. By means of a pivot drive, both members can be simultaneously moved toward one another and away from one another. Through this, the holding device can be adjusted in each given case in such a manner, so that workpieces of different height can be retained in a centralized position with respect to the axis of rotation, in order to subject them in a rotating manner to a uniform centrifugal blasting treatment.

Abstract: A fluorescent tube holder comprises a fluorescent tube holding chuck having a pair of releasable claws for holding the fluorescent tube, and a base chuck having a pair of releasable claws for holding the base of the fluorescent tube on the outer periphery thereof. The base chuck is movable toward and away from an end of the fluorescent tube held by said fluorescent tube holding chuck.

Abstract: A clamping apparatus includes jaws carried by a frame and movable toward each other to center and engage a workpiece by a lever and linkage arrangement which operates quickly. The workpiece is then firmly clamped by a rope which extends from the frame around the workpiece at least 360.degree. and through a gripping device. The gripping device is urged toward the gripping position by a spring.