54 results about "Screw axis" patented technology

The application relates to a retractor semi-automatic assembly line and a control method thereof, and belongs to the technical field of retractor assembly equipment. The retractor semi-automatic assembly line comprises a conveying line, and support plate marking assemblies, screw shaft locking and oiling assemblies, cover plate pressing assemblies and inner cover pressing and balancing assemblies are sequentially arranged on the side edges of the conveying line. The support plate marking assemblies comprise a push-in pressing device, and a roller oiling station is arranged at the front end of the push-in pressing device. The screw shaft locking and oiling assemblies comprise a screw shaft height measuring station, a screw shaft locking station is arranged on the side edge of the screw shaft height measuring station, and a main body oiling station I is arranged at the front end of the screw shaft height measuring station. The cover plate pressing assemblies comprise a grabbing station, a pressing station is arranged on the grabbing station, and a main body oiling station II is arranged at the front end of the grabbing station. The inner cover pressing and balancing assemblies comprise a pressing tool, a CP height detection station is arranged at the front end of the pressing tool, and a balancer pressing station is arranged at the rear end of the pressing tool. The retractor semi-automatic assembly line adopts multiple stations to realize the integration of oiling, assembly pressing and detection, and realizes a retractor semi-automatic assembly process.

A fan wheel (1) with a plurality of fan wheel blades (10) and a fan wheel hub (20) can be fixed to a motor (30) in order to drive the fan wheel (1) about a rotation axis (X) that extends centrally through the fan wheel hub (20). Each of the fan wheel blades (10) can be screwed to the fan wheel hub (20) by at least one screw (41, 42). A longitudinal screw axis (L) extends parallel to the rotation axis (X). The fan wheel hub (20) has a corresponding screw receptacle (21, 22) for each of the screws (41, 42).

Planetary gear set with a planet carrier (5) and a planet gear shaft (2), wherein one area of ​​the planetary support (5) is shaped as a first cheek, wherein the first cheek has an axially through recess into which the planet gear axis (2) is at least partially inserted, characterized by the fact that an axially directed threaded bore is provided in the end face of the planet gear shaft (2), wherein a screw (4) is screwed into the axially directed threaded bore, so that a spring element (6) is pre-tensioned, which secures the screw connection between screw (4) and planet gear shaft (2), wherein the area axially covered by the screw (4) overlaps at least with the axial area covered by the recess, wherein the spring element (6) is pre-tensioned and / or presses against the wall of the recess, wherein a planet gear (1) is rotatably mounted on the planet gear axis (2) by means of a bearing, wherein the planet gear (1) is positioned against a collar of the planet gear axle (2), wherein the screw (4) has a screw head, wherein the spring element (6) is arranged axially between the screw head and the end face of the planet gear shaft (2), wherein the spring element (6) is designed as a perforated disc, the axially covered area of ​​which shifts monotonically in the axial direction with increasing radial distance from the screw axis and / or central axis of the planet gear axis (2), wherein the outer edge of the perforated disc touches the wall of the recess and the inner edge of the perforated disc touches the screw (4), wherein the planet gear axle (2) has a collar with which it is positioned against the planet carrier (5), namely against an edge of the recess of the planet carrier (5).

Some embodiments relate to an electro-mechanical coupled to a first mounting point and a second mounting point. The electro-mechanical actuator includes a screw, a first nut on the screw, a sensor assembly, a first motor, and a backup motor. The first nut is coupled to the first mounting point. The sensor assembly generates signals indicative of (a) the position of the first nut on the screw or (b) changes in the position of the first nut on the screw. The first motor can rotate the first nut about a screw axis of the screw. The backup motor can rotate the first nut about the screw axis of the screw. A controller module can control the first motor or the backup motor based on the signals generated by the sensor assembly.

A riflescope with a scope body has a movable optical element defining an optical axis connected to the scope body. The riflescope also has a turret having an outer knob and a turret screw defining a screw axis and operably connected to the optical element for changing the optical axis in response to rotation of the turret screw. The riflescope also includes a zero-adjustment assembly contained within the turret and operably interfacing with the turret screw. The zero-adjustment assembly comprises a zero-adjustment disc and a locking collar disposed around a downward facing central shaft of the zero-adjustment disc. The zero-adjustment disc is contained in an upper recess of the outer knob. The locking collar has a first position in which the zero-adjustment disc is freely rotatable about the turret screw and a second position in which free rotation of the zero-adjustment disc is prevented.

The screw system for joining components requiring high clamping forces for the screw connection, wherein the screw system comprises a screw unit connected to an articulated robot arm, which includes a motor for the rotary drive, a torque shaft, a tool holder for a screw tool and a feed head, which lie on a common screw axis, is characterized in that the screw unit is pivotably mounted about a ball-shaped joint which is arranged in the screw axis, so that a deflection of a robot axis of the articulated robot arm due to clamping forces and a resulting tilt of the screw unit is compensated by pivoting it, so that the screw axis maintains its perpendicular position to the plane of the components to be joined.

A six-axis agile shooting device includes a base assembly, shooting assemblies, and six motion assemblies, a linear directional axis motion assembly is configured to drive a flipping directional axis motion assembly to move, the flipping directional axis motion assembly is configured to drive an infinite rotating motion assembly to flip, the infinite rotating motion assembly includes rotating platform assemblies provided with shooting workstations correspondingly, a gantry is fixed to the base assembly, a linear lead screw axis motion assembly is connected to a lead screw lifting axis motion assembly and configured to drive the lead screw lifting axis motion assembly to move, the lead screw lifting axis motion assembly is connected to a rotating axis motion assembly and configured to drive the rotating axis motion assembly to move, and the rotating axis motion assembly is connected to shooting assemblies and configured to drive the shooting assemblies to flip and shoot.

The present invention relates to the field of drive control technology, and discloses a multi-axis servo synchronous drive control method, system and injection molding machine for an injection molding machine. The method comprises: obtaining the screw axis of an injection mechanism and the installation parameters of left and right servo motors, and establishing a load monitoring reference coordinate system; obtaining the motor position coordinates, constructing a virtual load center point and calculating its dynamic position, and implementing differentiated mirror load compensation; calculating the comprehensive stability index of the left and right axes based on the compensation result; accordingly, adopting a progressive switching strategy to determine the reference axis and the follower axis, constructing a virtual load shunt channel and implementing dynamic shunt control; the present invention can realize dynamic balanced distribution of dual-axis loads, eliminate the problem of torque fluctuation transmission, and improve the injection dual-axis synchronization stability and service life.

This utility model discloses a convenient clamping roller spacing adjustment mechanism, including a mounting frame with a first mounting seat, a first rotating roller, a second rotating roller, a cylinder, and an adjustment component that works with the cylinder to adjust the spacing between the first and second rotating rollers. The first mounting seat is rotatably mounted on the mounting frame via a rotating shaft, and the first rotating roller is rotatably mounted on the first mounting seat. The axial direction of the first rotating roller is not aligned with the axial direction of the rotating shaft. The cylinder drives the first mounting seat to rotate, causing the first rotating roller to move closer to or away from the second rotating roller. The adjustment component includes a screw and a push block. The screw drives the push block to move along the screw axis, and the push block has an inclined surface that adjusts the spacing between the first and second rotating rollers as the push block moves. The cylinder quickly moves the first and second rotating rollers apart and then closer to clamp the silicone flame-retardant pad. When adjustment is needed, the adjustment component is used for fine adjustment, solving the problems of time-consuming, labor-intensive, and inefficient adjustment.

The utility model relates to the technical field of fixing tools, and discloses a tool clamp for tubular parts, which comprises a base, a placing groove is arranged on the upper surface of a connecting plate, a fixing plate is mounted in the placing groove, a cylinder is mounted at one end of the fixing plate, and an extrusion plate is arranged on the outer surface of the cylinder. By rotating the knob of the fixing structure, the knob drives the one-way screw rod to rotate synchronously, the one-way screw rod is meshed with the sliding block through threads, when the one-way screw rod rotates, the sliding block moves linearly in the axis direction of the one-way screw rod, and when the sliding block moves, the extrusion plate is pushed or pulled through the hinged second connecting rod; the first connecting rod is fixed along with the column body to form a four-connecting-rod mechanism, so that when the extrusion plate generates radial displacement and the sliding block moves towards one side far away from the rotary knob, the extrusion plate compresses the inner wall of the annular workpiece, in the process, part of annular workpieces with different inner diameters can be effectively fixed, and the position of the annular workpiece is prevented from deviating.

The aim of the present invention is to solve or significantly reduce the phenomenon of unintentional unscrewing in bolt mechanics as a result of vibrations, forces or rotations This aim can be achieved by applying the following technical solution: the use of a screw characterised by the presence of two threaded stems separated by an unthreaded stem with a smaller diameter than the other stems, and a special nut, which is matched to the final thread of the screw. The nut is free to slip, rotate and misalign itself from the screwing axis when it reaches the unthreaded stem, making unintentional unscrewing impossible. This technical solution can be applied in the context of industrial accident prevention, related to the unintentional unscrewing of fasteners.

A screw element for the fixation of bone components and bone fragments is disclosed having a shaft with an outside screw thread and a longitudinal axis extending along the shaft and defining a distal direction and a proximal direction, and an insertion direction and an opposite removal direction, and has a tool attachment point starting radially inwards and the tool attachment point has a central opening and in the wall of this opening at least five tooth profiles directed radially outwards and mainly parallel to the screw axis directed radially outwards and mainly parallel to the screw axis are formed in the wall of this opening, and for each tooth profile an insertion wall in insertion direction and a removal wall in removal direction can be separated, and that the surface of the insertion wall is greater than the surface of the removal wall.

The utility model discloses a screw taking-out device, which belongs to the technical field of aeronautical manufacturing and maintenance and comprises a sleeve, a locking ring, a cylindrical rolling shaft and the like, the cross section of an inner hole of the sleeve is a triangle-like shape formed by connecting three linear sections and three arc sections at intervals, the locking ring is provided with three strip-shaped cylindrical rolling grooves, and the cylindrical rolling shaft is arranged in the cylindrical rolling grooves. And the two are combined and then placed and limited in the inner hole of the sleeve. During use, the screw rod is inserted among the three cylindrical rolling shafts in the locking ring, the outer sides of the cylindrical rolling shafts are adjacent to the arc section of the inner hole in a non-extrusion state, the sleeve is rotated, the cylindrical rolling shafts slide to the linear section of the inner hole under the friction force action of threads of the screw rod, the screw rod is clamped by the cylindrical rolling shafts, and the sleeve is continuously rotated to screw out the screw rod. When the screw rod is disassembled, torque applied to the screw rod acts on the axis of the screw rod, the screw rod is prevented from being broken in the rotating and taking-out process, the quality of a product fastened by a bolt is guaranteed, and meanwhile the disassembling work efficiency is not affected.

The utility model discloses an adjustable cutting diameter type reamer, which comprises a reamer rod, a blade, a cylindrical convex part and a screw, the end part of the reamer rod is provided with an end surface, the cylindrical convex part is arranged in the center of the end surface and is coaxial with the reamer rod, and the blade is arranged on the end surface through the screw, can axially rotate along the screw and is propped against the cylindrical convex part for limiting. The cutting part on the blade extends out of the end face, and the cutting diameter is adjusted by replacing the cylindrical convex parts with different diameters. The reamer is further provided with an annular boss, a fastening screw, an elastic check ring, a limiting pin, a chip pocket, a cooling water hole and other structures, the stability of the reamer can be improved, the service life is prolonged, the cost is reduced, the machining precision and flexibility are improved, the reamer is suitable for machining requirements of various hole diameters, and the problem caused by the fixed cutting diameter of a traditional reamer is effectively solved.

A screw and nut linear drive assembly includes a housing, a screw within the housing, an electric motor for rotating the screw, a nut which is driven, when the screw is rotated, to move linearly in a longitudinal direction coinciding with the screw axis, and an axial force transfer arrangement to transfer force from the nut to a push rod to be connected to a member to be actuated by the assembly. The transfer arrangement includes a sequential arrangement of a first and a second axial force transferring component in force transmitting contact that are configured such that first contact points between the first and second axial force transferring components define a first axis (in a plane perpendicular to the longitudinal direction, about which the second axial force transferring component is capable of tilting with respect to the first axial force transferring component to reduce torque transfer to the nut).

A screwdriving system is provided for fastening components that require high contact pressures and includes a screwdriving unit connected to an articulated robot, where the screwdriving unit includes a rotary drive, a torque shaft, a tool holder for a screwdriving tool and a feed head. The tool holder and the feed head are located on a common screw axis, where the screwdriving unit is mounted so as to be pivotable about a ball-like joint arranged in the common screw axis, so that a deflection of a robot axis of the articulated robot caused by high contact pressures and a resulting tilted position of the screwdriving unit is compensated by pivoting of the screwdriving unit, such that the common screw axis maintains a perpendicular position with respect to a plane of the components being fastened.

A riflescope with a scope body has a movable optical element defining an optical axis connected to the scope body. The riflescope also has a turret having an outer knob and a turret screw defining a screw axis and operably connected to the optical element for changing the optical axis in response to rotation of the turret screw. The riflescope also includes a zero-adjustment assembly contained within the turret and operably interfacing with the turret screw. The zero-adjustment assembly comprises a zero-adjustment disc and a locking collar disposed around a downward facing central shaft of the zero-adjustment disc. The zero-adjustment disc is contained in an upper recess of the outer knob. The locking collar has a first position in which the zero-adjustment disc is freely rotatable about the turret screw and a second position in which free rotation of the zero-adjustment disc is prevented.

The application discloses a percutaneous minimally invasive porous pedicle screw, which comprises a screw tip, a screw body and a screw seat; the screw is integrally formed by using an additive manufacturing technology; the screw body comprises a threaded segment, the thread teeth of the threaded segment are formed by a dense solid metal, and the screw groove bottoms and the screw rod main body region between the thread teeth are formed by a three-dimensionally communicated porous structure; the screw is provided with a through minimally invasive hole along an axis; a bone cement hole which is in communication with the outside is arranged on the side wall of the minimally invasive hole; the edge of the bone cement hole is provided with a solid wall with a thickness of 0.2-0.4 mm; the minimally invasive hole is arranged on the screw axis, and the bone cement hole which is in communication with the outside is arranged on the side wall of the minimally invasive hole, so that the problems, such as jamming, deviation from the track and generation of metal debris due to the rough edges of the porous structure, and outflow and solidification of bone cement at the specified position, can be effectively avoided; and the design that the thread teeth are in a solid structure and the screw rod main body between the thread teeth is a three-dimensionally communicated porous structure guarantees the mechanical strength and instant holding force of the screw.

A guide rail side-mounted vertical shaft lead screw lifting module comprises a rack, a motor, a lifting frame and a guide rail. The motor is arranged on the rack, a lead screw is fixed to an output shaft of the motor, and a lead screw nut seat is arranged on the lead screw in a matched mode. The lifting frame is fixedly connected with the lead screw nut seat; the two guide rails are arranged on one side of the rack; a sliding block is arranged on the guide rail in a matched mode, and a threaded hole is formed in the sliding block. Connecting blocks are arranged on the two sides of the lifting frame, through holes corresponding to the threaded holes are formed in the connecting blocks, and the diameter of the through holes is larger than that of the threaded holes. The guide rail is connected to a limiting plate through screws, the limiting plate is fixed to the rack, a step is arranged on the side, close to the lifting frame, of the limiting plate, and the guide rail is attached to the step. The screw between the connecting sliding block and the connecting block is unscrewed, the size error caused by machining and mounting between the axis of the lead screw and the axis of the guide rail is compensated through the gap between the screw and the through hole, then the screw between the connecting sliding block and the connecting block is screwed, and adjustment is more convenient.

A mechanical lug includes a lug body. The lug body defines a wire receptacle bore therethrough along a wire axis from a first face of the lug body to a second face of the lug body opposite the first face. The lug body also defines a WBS bore extending from a third face of the lug body into the wire receptacle bore along a screw axis that is lateral to the wire axis. The wire receptacle bore has a cross-sectional shape relative to the wire axis that includes opposed clamping surfaces that converge toward one another in a direction away from the WBS bore. The clamping surfaces are configured to clamp a wire urged into the opposed clamping surfaces by a WBS in the WBS bore.

This utility model relates to the field of ultrafine powder grinding technology, specifically to a separator for a wet grinding mill. It includes a separator assembly comprising a housing with a top opening and a sealing cover on top of the housing. In this utility model, when a servo motor drives a lead screw to rotate, the vertical groove constrains the movement direction of the connecting plate, causing the nut to move vertically upwards along the lead screw, thereby synchronously raising the sealing cover. When the connecting plate moves to the position where the vertical groove and the horizontal groove connect, the horizontal groove releases the constraint on the rotation of the connecting plate, and the connecting plate then rotates into the horizontal groove, causing the sealing cover to detach from the housing and rotate around the lead screw axis. When the connecting plate reaches the end of the horizontal groove, the servo motor stops running. At this point, the sealing cover has completely moved out from directly above the housing, allowing the operator to easily remove the separator sieve from the housing, improving the replacement efficiency of the separator sieve and making operation and maintenance simpler and more efficient.

A mounting structure for a luminaire. The mounting bracket is rotatably coupled to a rod positioned along the helical axis. Rotation of the rod about the helical axis also rotates the mounting bracket about the helical axis when the mounting bracket is rotatable about the helical axis. When the mounting bracket is unable to rotate in a particular rotational direction, rotating the rod about the helical axis causes the mounting bracket to travel along the helical axis.

A cleaner head (6) for a hard floor cleaner (2) is provided. The vacuum cleaner head (6) includes a housing defining a roller cavity and an elongate roller (10) disposed within the roller cavity. The vacuum cleaner head (6) further comprises a spiral screw (22) and a carrier head (25). The elongate roller (10) is configured to rotate about a roller axis (16) and the helical screw (22) is configured to rotate about a screw axis (26), the screw axis (26) being offset from the roller axis (16). The carrier head (25) is mounted to the helical screw (22) and is configured to travel along the screw axis (26) upon rotation of the helical screw (22). The vacuum cleaner head (6) further comprises a fluid inlet (50) and a pressure member (52). A fluid inlet (50) is arranged to deliver fluid to the roller cavity to wet the roller (10), and a pressure member (52) extends from the carrier head (25) and is arranged to compress an outer surface of the roller (10) to remove fluid from the roller (10) when the roller (10) is rotated in use.

The utility model relates to the technical field of dies, and discloses a screw die convenient to position, which comprises a base and a stand column, a control part for keeping the axis of a screw stable is arranged on the inner side of the base, and the control part comprises a slip sheet. Meanwhile, an abutting block located in a groove abuts against, so that the bottom end of a ratchet bar is abutted against by an I-shaped sliding block and a connecting rod and cannot rotate, the inclined face column abuts against the inclined ratchet bar while a positioning disc is pressed downwards, and then the inclined face column is forced to continuously push a sliding rod to drive a positioning piece to fix a screw head; or some thin screw heads are pressed between the positioning piece and the inner side of the positioning disc, so that the screw heads are pressed, the axes of the screws can be kept consistent through the arrangement of the six groups of circumferential arrays, the screws are fixed in the positioning disc, and the situation that when the screws are subjected to heading, the screws deviate due to vibration, and a heading groove is inclined is avoided.

The invention relates to a spindle drive (10) for adjusting a movable component in a motor vehicle and to a method for producing such a spindle drive (10), comprising a spindle (20) having a spindle thread (21) and a spindle nut (30) arranged on the spindle (20) and having a nut thread (31) meshing with the spindle thread (21), the threaded spindle (20) or the threaded spindle nut (30) can be rotated by means of a drive motor (12) in order to adjust the threaded spindle nut (30) relative to the threaded spindle (20) along a threaded spindle axis (19), a rotation-resistant axial stop element (40) having an axial stop surface (41) is formed on the threaded spindle (20), which axial stop surface defines an axial adjustment path of the threaded spindle nut (30) on the threaded spindle (20), the stop element (40) is assembled from at least two ring segments (42) which extend in the assembled state over the entire circumference of the screw (20).

The present application relates to the equipment of reactor control rod safety protection, specifically relates to the device and simulation equipment for simulating the operation of rotor driving mechanism under the condition of inclined overturning, the device comprises: a support; a test body, the middle section of the test body is hinged to the support, and the test body is used for rotating around the hinge; and a traction assembly, the traction assembly is movably arranged on the support, the lead screw of the test body is connected with the traction assembly, and the lead screw of the test body is used for driving the lead screw to move along the lead screw axis direction when the traction assembly moves. By adopting the above-mentioned device for simulating the operation of rotor driving mechanism under the condition of inclined overturning, the prototype structure and the interaction relationship can be simulated more truly, without using the prototype size lead screw, control rod assembly and the like, compared with the traditional simulation device, the installation space of the simulation device is greatly reduced.

An extruder head assembly for an additive manufacturing machine includes a supporting member defining a feed zone for receiving input material, a barrel defining a channel generally aligned with the feed zone, a heater assembly, a nozzle connected to the barrel, an extruder screw partially disposed in the channel and a motor operatively connected to the extruder screw. The extruder screw defines a screw axis, and includes an agitating portion that is disposed in the feed zone and that has an engaging surface, and an extruding portion that is disposed in the channel of the barrel, and that has a helical flight. The engaging surface is configured to engage input material, extends radially outwardly from the screw axis, and is oriented such that an angle between the engaging surface and a plane generally orthogonal to the screw axis is greater than a critical angle.

The invention relates to a connection system (10) for connecting at least two, in particular plate-like, elements, comprising a bolt (12), a nut (14) corresponding to the bolt (12) and having a screwing channel (17) extending along a screwing axis (15) into which the bolt (12) can be screwed, and a holder (16) for receiving the nut (14), wherein the nut (14) has a foot portion (22) and a head portion (20) adjoining the foot portion along the screwing axis (15), the foot portion (22) at least partially projecting beyond the head portion (20) in a direction perpendicular to the screwing axis (15). The invention also relates to an assembly (11) comprising such a connection system (10).

A tool (10a, 10b) for holding two fastening screws (12a, 12b) that can be inserted from the inside through coaxial bores of a control arm (14) is characterized in that the tool (10a, 10b) comprises a carrier (24) on which a slidable but circumferentially rotationally fixed fixing nut (26a, 26b) for mounting onto the screw head (18a, 18b) is attached at each end, wherein a centering sleeve (27a, 27b) is slidably arranged radially outside on each fixing nut (26a, 26b) for mounting onto a screw collar (20a, 20b) for centering to a screw axis (A), wherein the two centering sleeves (27a, 27b) are jointly moved axially apart by means of an actuator (34a, 34b) and thus engage with the screw collars (20a, 20b) are movable, and compression springs (31) are arranged between the fixing nuts (26a, 26b) and the centering sleeves (27a, 27b), whereby the moved centering sleeves (27a, 27b) carry the fixing nuts (26a, 26b),to engage them with the screw heads (18a, 18b).