75 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.

The invention discloses a screw taking-out device and a using method thereof, and belongs to the technical field of aeronautical manufacturing and maintenance, the screw taking-out device 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 similar triangle formed by connecting three linear sections and three arc sections at intervals, and the locking ring is provided with three strip-shaped cylindrical rolling grooves; and the cylindrical rolling shaft and the cylindrical rolling groove are combined and then are 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. According to the screw disassembling device, when the screw is disassembled, torque applied to the screw acts on the axis of the screw, the screw is prevented from being broken in the rotating and taking-out process, and the disassembling work efficiency is not affected while the quality of a product fastened by a bolt is guaranteed.

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 invention provides a clamp special for valve body machining and a method. The clamp comprises a fixed seat and a movable seat. A through central hole is formed in the center of the mounting groove; the sliding plate is connected to the front side of the fixed seat, and the position of the sliding plate can be adjusted in the length direction of the sliding plate. A vertical screw is fixed on the mounting plate, a fixed chuck and a movable chuck are slidably connected onto the screw, a fastening nut is connected onto the screw in a threaded manner, the two chucks are positioned between the mounting plate and the fastening nut, and coaxial positioning bosses are arranged on opposite surfaces of the chucks, and the valve body is fixed between the two chucks. The sliding plate is provided with a positioning groove, and the center hole, the positioning groove and the axis of the screw are coplanar. And the sum of half of the axial thickness of the valve body and the thickness of the fixed chuck is equal to the distance from the center of the positioning groove to the mounting plate. The positioning groove is coaxial with the center hole, so that the thickness center of the fixed valve body is coaxial with the positioning groove, and a machining hole is coaxial with a machine tool spindle.

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.

A segmented and adjustable mast slide (5) that will eliminate the problem of the mast slides (5) connected to the pile driving unit (4) getting stuck in the U profile bearing element (6) for various reasons in pile driving machines (1), characterized by comprising of; a middle slide part (52) with a screw slot (14) thereon, a right slide part (51), a left slide part (53), a screw (9) enters the screw slot (14) in the middle slide part (52) to ensure the back-and-forth movement of the middle slide part (52), a screw bearing (10) that supports the said screw (9) and allows the screw (9) to move back and forth since it is fixed, upper support plate (15) to prevent the right slide part (51) and the left slide part (53) from moving upward due to the friction effect formed by the inner wall of the U profile bearing element (6) during the downward movement of the mast (8), lower support plate (16) to prevent downward movement of the right slide part (51) and the left slide part (53) during upward movement of the mast (8), both by gravity and by friction with the inner wall of the U profile bearing element (6).

The invention relates to the technical field of screw machining rotary milling, in particular to screw machining rotary milling equipment which comprises a rotary milling machine tool, a lathe spindle is fixedly mounted on the rotary milling machine tool, a fixing seat is fixedly mounted on the rotary milling machine tool, a milling cutter disc is movably mounted on the rotary milling machine tool, and a cleaning assembly is fixedly mounted on the rotary milling machine tool. The cleaning assembly comprises a motor, a first threaded rod is fixedly installed at the output end of the motor, a gear box is in transmission connection with one side of the first threaded rod, a second threaded rod is in transmission connection with the gear box, and the facing cutter is movably installed on the first threaded rod and the second threaded rod; according to the invention, the baffle is driven to move upwards through the connecting rod, the magnetic attraction block moves along with the baffle, and when the milling cutter moves along the axis of the screw rod for whirlwind milling, generated scrap iron is attracted to the baffle, so that the scrap iron is prevented from splashing into the milling cutter to damage blades, shorten the service life of the milling cutter and harm the personal safety of constructors due to scrap iron splashing.

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 present invention makes it possible to avoid a catching phenomenon in which smooth rotation is prevented by a small screw being caught on an inclined surface of a washer due to screwing, and to also reduce processing costs. In this fastening structure, a threaded shaft (1a) of a bolt (1) for mounting a mounting object is passed through a mount hole of a mount member (2) until the tip portion protrudes, and a small screw (5) attached to a nut (4) on the tip portion via a washer (3) is screwed, thereby fixing the mounting object to the mount member (2). The washer (3) has: an inclined surface (3b) formed on a first surface (3A) facing the nut (4); and a second surface (3B) which is a flat surface on the opposite side to the first surface (3A). The inclined surface (3b) is formed such that its height gradually decreases in a tightening direction of the nut (4). The small screw (5) with a spherical tip (5b) is screwed into the nut (4) such that the screw axis is parallel to the axis of the nut (4), and the tip (5b) of the small screw (5) protrudes and is in contact with the inclined surface (3b). The inclined surface (3b) has a smaller friction coefficient than the second surface (3B) of the washer (3).

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 utility model provides a water-soluble fertilizer bagging device which comprises a discharging pipe, at least two screw rods which are symmetrically distributed on the outer side face of the discharging pipe and rotationally connected with the discharging pipe, and two supporting components which are used for being attached to and abutting against the inner side face of a packaging bag and are in threaded connection with the two screw rods respectively. The fixing table is arranged on the outer side face of the discharging pipe, the gear ring is rotationally arranged on the outer side face of the discharging pipe, the gear is fixedly arranged on the two screw rods and meshed with the gear ring, and the driving component is used for driving the gear ring to rotate so as to drive the two screw rods to rotate through the gear. And then the supporting components on the two screws are driven to be close to or far away from each other in the axis direction of the screws, so that the supporting components support the bag opening of the packaging bag, automatic jacking of the inner side face of the packaging bag is achieved, the requirement for manual intervention is reduced, and the automation degree is improved.

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 sealing cap (4) configured to engage with a threaded neck of a bottle includes a top wall (43) from which a side wall (41) and a sealing skirt (46) extend. The side wall (41) comprises a cap thread (44) configured to be screwed onto the neck thread about a screwing axis (X1). The sealing skirt (46) includes an inclined sealing surface (47) configured to press against a corresponding surface of the neck on a side opposite the surface including the neck thread when the cap thread (44) is screwed onto the neck thread, the inclined sealing surface (47) being formed by a wall of the sealing skirt (46) surrounding the cavity. The inclination angle (alpha) between the inclined sealing surface (47) and the screwing axis (X1) is selected to be between 7 DEG and 25 DEG, and the axial length (hT) of the cap thread (44) taken parallel to the screwing axis (X1) is higher than or equal to 1.5 times the pitch (p) of the cap thread.