101 results about "Screw axis" patented technology

A ball screw bearing efficiency test device disclosed by the present invention comprises a tool table and a tested screw rod, the tested screw rod is composed of a screw rod shaft and a screw rod sleeve which is used for sleeving the screw rod shaft and is movably matched with the screw rod shaft so as to perform sliding motion along the axis direction of the screw rod shaft, and the tool table is provided with a driving seat, a test seat and a sliding seat. The tested screw rod is located in the test seat, and the drive seat is provided with a first drive member used for driving the screw rod shaft to move and a first detection member used for cooperating with the first drive member to detect the torque generated when the screw rod shaft moves. The tool table is provided with a loading screw rod and a second driving part used for driving the loading screw rod to do relative sliding motion in the axis direction of the tested screw rod. A loading part used for being matched with the second driving part to apply an axial load to the transmission sleeve is arranged between the loading screw rod and the screw rod sleeve. The problem that in the prior art, no detection equipment for detecting the efficiency of the ball screw matched with the MKC2 operating system exists is solved.

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.

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

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).

Assembly comprising a support, a part attached to the support, and a gasket between the support and the part, associated assembly method. The present invention relates to an assembly comprising a support (10), a part attached to the support, and at least two screws (34) for fixing the part to the support. Each screw (34) is inserted through a hole (65) in the part and screwed into a threaded hole (60) in the support along a screw axis (XX). The assembly includes a gasket (33) between the support and the part, the gasket having at least two holes (90) through which the screws pass. The assembly includes at least two rigid bushings (95), each received by a respective hole in the gasket. Each bushing defines a passage through which one of the screws passes. Each bushing has a height along the screw axis less than or equal to the rest thickness of the gasket. The screws are tightened so that the support and the part rest on each bushing. Figure for the abbreviation: Figure 2

The ball screw device of the present disclosure, which aims to reduce the amount of grease leaking, includes a screw shaft, a nut having a through hole penetrating in an axial direction parallel to the screw shaft and into which the screw shaft is inserted, and a number of balls arranged between the nut and the screw shaft. The inner circumferential surface of the nut includes a main body inner circumferential surface provided with an inner circumferential raceway surface on which the balls roll, and a reduced diameter inner circumferential surface arranged closer to the axial end of the nut than the main body inner circumferential surface. The diameter of the reduced diameter inner circumferential surface is smaller than the diameter of the main body inner circumferential surface.

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.

The present invention belongs to the technical field of distillation towers, and discloses a waste liquid concentration distillation tower, including a distillation tower, a base is fixedly installed at the bottom of the distillation tower, a guardrail is fixedly installed on the top of the base, the distillation tower is located inside the guardrail, four mounting blocks are fixedly installed around the bottom of the base, a fixed block is fixedly installed in the middle of the bottom of the base, two screws are rotatably installed inside the fixed block, and both of the screws pass through the fixed block. The precise meshing of the inclined gears driven by the motor realizes the smooth transmission and conversion of power, thereby driving the screw to rotate synchronously, and the threaded connection design between the screw and the moving block provides the moving block with a precise path for horizontal movement along the axis of the screw. As the screw rotates, the moving block moves slowly, and through the transmission system such as the connecting rod and the support group, the support base can slowly approach the ground until a stable support state is reached.

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.

A viewing optic is disclosed. In one embodiment, the viewing optic is a rifle scope having a scope body, a movable optical element defining an optical axis connected to the scope body, a turret and a zero point adjustment subassembly. The turret includes a turret screw, a turret chassis subassembly and a turret cap. The turret screw defines a screw axis and is operably connected to the optical element for adjusting the optical axis in response to rotation of the screw. The turret cap at least partially overlaps the turret chassis subassembly. The zero point adjustment subassembly includes a zero cap connected to the turret screw and a locking mechanism. The locking mechanism releasably secures the zero cap and the turret. The zero point adjustment subassembly permits adjustment of the zero point without the use of tools.

An object is to manufacture molded bodies having a small variation among products even if the mixture amount of a metal powder is increased when molding is performed by directly introducing not only a metal powder but also a powdered resin into an injection molding machine.In a metal powder mixed resin molded body manufacturing method for manufacturing a molded body by kneading a molding material including a metal powder, a thermoplastic resin powder, and an additive agent, molding is performed by an injection molding machine in which a molding screw is arranged. The molding screw of the injection molding machine includes a feeding portion, a compressing portion, and a metering portion that are continuously and integrally provided, the feeding portion and the compressing portion are constituted by an one-line spiral flight, the flight of the compressing portion includes a plurality of sub-flights that extend in a spiral manner in a screw axis direction and the sub-flights each have a polygonal shape with rounded corner portions, and the sub-flights are arranged such that the corner portions are shifted by a set angle in a circumferential direction about the screw axis, and the metering portion is provided with a plurality of blending / aligning portions each having gear-like protrusions and recesses in a circumferential direction about the screw axis.

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 discloses a feeding device and a glass edge grinding machine using the feeding device. The glass edge grinding machine includes a grinding device and a feeding device; the grinding device includes a grinding head and a grinding motor, the grinding head is fixedly connected to the output shaft of the grinding motor, and the grinding device is fixedly installed on the feeding device. The feeding device includes: a base, an upper cover, a screw shaft, a compensation cylinder, a brake assembly and an elastic member; the base and the upper cover are slidably connected; the compensation cylinder includes a cylinder body and a piston rod, and the piston rod is airtightly slidably connected to the cylinder body; the screw shaft is provided with a screw part, the cylinder body is connected to the upper cover, the piston rod is rotatably connected to the screw shaft, and the screw part is threadedly connected to the base; the brake assembly is used to fix the piston rod relative to the cylinder body. The present invention has a compact structure and reliable operation, and is suitable for use in automated mass production. The present invention can be applied to processing equipment.

 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).