68 results about "Screw system" patented technology

The invention relates to turning and grinding composite equipment for machining an outer circle and an annular groove of a steel piston and a using method of the turning and grinding composite equipment, and belongs to the technical field of piston machining equipment. The equipment comprises a base, a stand column, a left planker, a right planker, a left workbench, a right workbench, a tool turret, a static pressure electric spindle and a rotating spindle, the stand column is arranged on one side of the base, and the left planker and the right planker are horizontally arranged on the two sides of the stand column respectively through servo lead screw systems; the left carriage and the right carriage are vertically provided with a left workbench and a right workbench through servo lead screw systems respectively, the left workbench is provided with a tool turret, the tool turret is provided with a machining tool, the right workbench is provided with a static pressure electric spindle, the lower end of the static pressure electric spindle is provided with a grinding wheel, and the other side of the base is provided with a rotating spindle. The outer circle of the piston is machined through turning, turning is replaced by grinding when the piston ring groove is machined, the machining precision of the piston ring groove is improved, the service life of the piston ring groove is prolonged, the structure is compact, operation is convenient, and the machining efficiency is high.

The invention discloses a titanium-magnesium hollow screw system capable of promoting fracture healing and a manufacturing method. The titanium-magnesium hollow screw system comprises a titanium-based supporting structure and a magnesium filling layer. The titanium-based supporting structure comprises a main body part, the surface of the main body part is provided with an imitated bone trabecula part, and a plurality of bone gaps are formed in the imitated bone trabecula part; wherein bone gaps are filled with the magnesium filling layer, and the magnesium filling layer is combined with the titanium-based supporting structure in a physical embedding mode; the titanium-based supporting structure bears and maintains initial fixation and long-term bearing, so that the strength and the stability of the screw are ensured; the surface imitated bone trabecula and the communicated bone gaps increase the surface area and provide a physical channel for vascularization and bone tissue ingrowth, so that synostosis is promoted; the magnesium filling layer releases magnesium ions after being locally controllably degraded, so that osteogenesis and angiogenesis are favorably stimulated, the local biological environment is improved, instant mechanical support after an operation is ensured, bone healing is promoted through local biological activity release and structural orientation, the healing time is favorably shortened, and the healing quality is favorably improved.

The invention relates to a large-capacity semi-dull nylon 66 resin continuous polymerization device for civil filaments and a production process, and through a whole-process continuous design (salification-concentration-polymerization-pelletizing) and an intelligent regulation and control system, the production efficiency and the product consistency are remarkably improved. According to the process, high-efficiency production is realized, and meanwhile, the product quality and the functional applicability are greatly improved through innovative structural design; the dispersity of TiO2 master batches in resin is effectively improved through high-shear mixing of a screw system, so that the spinnability is further improved; the continuous process supports the flexible adaptation of the antioxidant and the extinction master batch, reduces the waste of raw materials, lowers the comprehensive production cost, and obviously enhances the market competitiveness.

A system for mechanical separation, comprising a platform comprising screws 20 to provide a sieving surface. The screws have parallel and neighbouring axis 4 and undergo rotational movement. At least

Provided are bone plates and systems including such plates. The present plates may be used for example, to accommodate spinolaminar junction or as a plate locking screw system for posterior spinal fixation in the cervical, thoracic, lumbar and sacral spine, extremities, pelvis and long bone fixation. The present devices and systems may include modular plates, rods and rails. Devices and systems herein relate to both open methods and minimally invasive surgery applications. Also provided are locking plates and systems relating to tethering applications. Further provided are kits including any of the present kits or devices, and methods including insertion of any of the present plates or systems into a patient.

To provide a nozzle system for a textile machine, which can be quickly, easily and surely fixed.SOLUTION: A nozzle system (100) comprises at least one nozzle element (1), and a connecting element (2) for connecting the nozzle element (1) to a textile machine. The connection element (2) comprises at least one quick fixing system (3). The quick fixing system (3) comprises a first position and a second position. In the first position, the quick fixing system (3) is connected to the connecting element (2) in such a manner that the nozzle element (1) can be fixed to the quick fixing system (3) such that the nozzle element (1) can be removed without assistance. The quick fixing system (3) is designed to be fixed to the connecting element (2) in such a manner that the nozzle element (1) is installed in the second position.SELECTED DRAWING: Figure 1

The invention discloses a speed reducer shaft sealing structure and an installation method, and belongs to the technical field of speed reducer shaft sealing. The structure comprises a replaceable shaft sleeve arranged outside a rotating shaft in a sleeving mode, an annular groove is formed in the inner wall of the shaft sleeve and provided with an O-shaped sealing ring to form a static sealing interface, and the surface of the outer circle of the shaft sleeve is subjected to hardening treatment and is in dynamic sealing fit with a framework oil seal lip. The fastening assembly reliably fixes the shaft sleeve to the shaft body through a jackscrew system with an anti-loosening structure. The replaceable wear-resistant shaft sleeve is arranged as a sacrifice part, an easily-worn sealing interface is transferred to the low-cost shaft sleeve from a high-value shaft body, a dual-sealing system and an anti-loosening fastening structure are combined, the sealing reliability is guaranteed, meanwhile, rapid maintenance and replacement during sealing failure are achieved, the downtime of equipment is greatly shortened, and the service life of the equipment is prolonged. The maintenance cost is obviously reduced, and the service life of the sealing system under severe working conditions such as heavy load and vibration is effectively prolonged.

The application discloses a variable sweep in-out telescopic wing aircraft variable structure, which comprises an outer wing, a fuselage, a screw system, a push rod, an inner wing, a push rod connecting piece, a graphite copper sleeve and upper and lower guide rails; wing storage grooves are formed on the two sides of the fuselage respectively and used for accommodating the outer wing and the inner wing; the inner wing is located inside the outer wing and connected with the outer wing through a rotating pair to realize rotating movement; the inner and outer wings are designed with special trajectory sliding grooves, one end of the push rod is connected with the sliding grooves, the other end is fixed with a sliding table of a ball screw through a connecting piece, a motor drives the screw to rotate, realizes the symmetrical movement of the push rod, controls the movement of the inner and outer wings and realizes the deformation of the wings. Through the design of the sliding grooves of the inner and outer wings, the push rod is connected with the inner and outer wings through the sliding grooves and plays a certain supporting role; the length of the sliding grooves is increased, the change range of the sweep angle is increased, the uniform movement of the screw is realized through the movement of the push rod along the sliding grooves, the outer wing is uniformly extended and the inner wing is uniformly rotated, the overall structure is simple and ingenious and is flexible and convenient to use.

The utility model belongs to the technical field of double-screw extruders, and particularly relates to a double-screw extruder for preparing thermoplastic vulcanized rubber, the double-screw extruder comprises a machine barrel and a double-screw system arranged in the machine barrel, the double-screw system comprises two screws, and the double-screw system at least comprises a first section, a second section and a third section in the axial direction of the screws, the thread pitches of the screws in the first section, the second section and the third section are a1, a2 and a3 in sequence; in the first section, the second section and the third section, the minimum distance between the screw and the inner wall of the machine barrel is d1, d2 and d3 in sequence, a1 > a2 > a3, and d1 > d3 > d2. According to the preparation method, the process linkage of melting plasticizing, shearing dispersion and dynamic vulcanization and the process link collaboration in the TPV manufacturing process can be realized, so that the mechanical property stability of the TPV product can be optimized, and the problem of performance fluctuation of TPV prepared by a traditional double-screw extruder can be solved.

The application relates to a screw system. The screw system comprises a screw unit with a housing, a tool holder for receiving a screw tool, a rotary drive to rotate the tool holder, and a linear drive to feed the tool holder. The screw system also includes a separate compensating module. The compensating module has a first element for mechanical coupling to the housing of the screw unit and a second element for mechanical coupling to an articulated robot arm, so that the screw unit can be attached to the articulated robot arm via the compensating module. The compensating module has at least one bearing.The first and second elements are movable relative to each other via at least one bearing, so that a deflection of a robot axis of the articulated robot due to contact forces and a resulting change in position of the screw unit can be at least partially compensated. The application also relates to a method for building a screw system in which a compensation module is arranged between an articulated arm robot and a screw unit.

The utility model relates to the technical field of filling equipment, and discloses a bottle clamping and positioning device of a cap screwing machine and a cap screwing system. The bottle clamping and positioning device of the cap screwing machine comprises a bottle feeding star wheel, a bottle clamping assembly and a protection plate assembly. An elastic clamp of the bottle clamping assembly comprises two clamping arms, the middle sections of the two clamping arms are connected through an elastic piece, one end of each clamping arm is rotationally connected with a rotating star wheel of the bottle clamping assembly, and a clamping space is formed by a gap between the other ends of the two clamping arms. A groove is formed in the periphery of the bottle feeding star wheel and used for containing a bottle body, and the bottle feeding star wheel can rotate and stir one clamping arm to rotate relative to the rotating star wheel so that the bottle body can be located in the clamping space. The protection plate assembly is arranged on the periphery of the bottle clamping assembly in a surrounding mode and comprises a first protection plate and a second protection plate, and the first protection plate is used for guiding the moving direction of the bottle body when the elastic piece rotates to the first position so that the bottle body in the groove can enter the clamping space; and the second protection plate is used for pressing the bottle body in the clamping space when the elastic piece rotates to the second position.

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 invention discloses a five-axis robot configuration synthesis method integrating a 2R1T parallel mechanism, and belongs to the technical field of robot manufacturing. A two-rotation and one-translation (2R1T) parallel mechanism is a core function module of a five-axis robot, most of the 2R1T parallel mechanisms are parallel mechanisms formed by connecting a plurality of kinematic pairs (such as an R pair, an S pair, a P pair, a U pair and a C pair) in series to form a kinematic branch chain and connecting a plurality of kinematic branch chains in parallel, the two ends of the kinematic branch chain are connected with a static platform and a movable platform respectively, calculation is carried out based on a PRU type kinematic branch chain, and the two-rotation and one-translation (2R1T) parallel mechanism is formed. A series of 2R1T parallel mechanism topological configurations are obtained through the spiral theory, a 2R1T parallel mechanism motion spiral system is analyzed, the 2R1T parallel mechanism and the single-degree-of-freedom joint module are reasonably configured, and it is ensured that the five-axis robot has the motion performance meeting the working requirement.

The present disclosure provides a fiducial screw system. The system comprises a fiducial screw having a screw shaft configured to be inserted into a bone material and a screw head having or forming a fastening interface configured to cooperate with a fastening tool for inserting the fiducial screw into the bone material. The system further comprises an elongated tube forming a guiding channel, wherein the elongated tube has a proximal longitudinal end and a distal longitudinal end, and wherein the distal longitudinal end is shaped to be attachable or attached to the fiducial screw, e.g., to its head, and the proximal longitudinal end forms a guiding opening leading into the guiding channel.

The utility model relates to the field of automobile part conveying, in particular to an automobile painting baking varnish rail conveying device which comprises a support, a conveying belt and adjusting plates, conveying rails are arranged at the upper end of the support, the conveying belt is installed in the conveying rails, the adjusting plates are arranged at the lower ends of the front conveying rail and the rear conveying rail, screws are arranged in the adjusting plates, and the side faces of the screws are meshed with installation blocks. The conveying device has the advantages that the distance between the conveying rails can be flexibly adjusted by adjusting the motor and the screw system so as to adapt to automobile parts of different specifications, and universality and flexibility of the conveying device are enhanced; the telescopic sleeve, the buffer plate and the pressure sensor are arranged at the tail end of the conveying rail, when components reach the tail end of the rail, the components can play a role in buffering, and once an abnormal pressure value is detected, the control system can automatically stop the conveying belt to prevent the components from being damaged or separated from the rail due to impact, so that the operation safety is improved.

The utility model relates to the technical field of automobile braking, in particular to a modular electromechanical brake based on a reverse planetary roller screw, which mainly comprises a reverse planetary roller screw pair and a gear compound transmission system consisting of a main rack, a first gear, a second gear, a reversing gear, a first auxiliary rack and a second auxiliary rack. The technical scheme has the advantages that compared with a standard planetary roller lead screw, the reverse planetary roller lead screw pair has a smaller return clearance, so that mechanical lag is reduced; the reverse planetary roller lead screw pair can more effectively control and distribute friction force, so that the friction force between rollers is minimized, and the energy loss is reduced; and moreover, the reverse planetary roller screw pair has higher transmission rigidity, which means that the deformation of the screw system is small under the same load. In conclusion, the brake can respond to the operation of a driver more quickly.

The invention discloses a quick hanging device and method for a control board. The device comprises a supporting plate, an upper set of hooks used for hanging an upper supporting rod of a working bucket are arranged at the upper end of the supporting plate, a baffle, an adjustable U-shaped groove formed by the baffle and the lower end of the supporting plate, and a lower supporting rod used for hanging the working bucket. The screw rod system comprises a screw rod penetrating through the supporting plate and the detection plate, a pressure spring sleeving the periphery of the screw rod, and a manual nut driving the baffle plate to press the lower supporting rod; and the detection system comprises a detection plate, an electrical element and a detected piece screw fixed on the fixed plate, the detection plate is connected in the fixed plate in a sliding manner, and when the detection plate moves, the relative position of the detection plate and the detected piece screw can be changed, the electrical element is triggered to switch the state, and the operation direction of the console can be conveniently and quickly adjusted.

The invention relates to a modular structure (1) for producing a wall, said structure comprising:- at least three annular elements (2) made of thermoplastic and by additive manufacturing; each annular element (2) has a side wall (2a) provided with an inward annular fold (2b) to act as a stiffener;- a connecting member (8) for attaching the annular elements (2) to each other, said connecting member (8) comprising two blocks (8a), each comprising at least three fixing claws (8b), each claw (8b) being provided to hook onto an edge of an annular element (2), the two blocks (8a) of the connecting member (8) being provided to bear on either side of the annular elements (2);- a screwing system (9) for bringing the two blocks (8a) of the connecting member (8) together and locking the assembly. Figure for the abstract: Fig. 1

An adjustable pediatric hip screw system designed for easy intra-operative length adjustment using a specialized inserter. The system ensures bone stimulation through the integration of a spring positioned between the end cap and the male component. Additionally, the screw's unique geometry effectively hinders cell migration through the physis. The female component is equipped with a dual flat-shaped shaft, which can be achieved either internally or externally through specific manufacturing processes. The male component is engineered to match the form of the female component, featuring a double flat to prevent rotation and a distal feature facilitating insertion into the femoral head.

The utility model provides a screw locking system. The screw locking system comprises an electric screwdriver, a code reader, an alarm, an upper computer and a server which are connected through signals. The electric screwdriver is used for locking and attaching a plurality of screws to a product; the code reader is used for reading a bar code on a product or a product carrying disc, and the alarm is used for sending out alarm information under the condition that the screw locking of the electric screwdriver is abnormal; and the upper computer is used for uploading abnormal information including the bar code and the abnormal screw locking position to the server under the condition that the screw locking of the electric screwdriver is abnormal, and calling the abnormal screw locking position from the server according to the bar code read by the code reader after the alarm sends out alarm information. Through operation of the electric screwdriver, the code reader, the alarm, the upper computer and the server, automatic alarm and calling of the abnormal screw locking position can be realized under the condition that the screw locking of the electric screwdriver is abnormal, and reference is provided for subsequent screw complementary locking, so that automatic positioning of the unqualified abnormal screw locking position is realized, and the processing efficiency of the locking condition of the unqualified screw is improved.

The invention belongs to the technical field of guide sleeve machining, and discloses an intelligent punching and nail screwing robot which comprises an upper computer system, a visual system, an electric control system, a mechanical arm, a punching system and a nail screwing system. The upper computer system is used for realizing state monitoring and parameter configuration of the robot; the visual system is used for identifying the type of the processed guide sleeve; the electric control system is used for controlling the mechanical arm, the punching system and the nail screwing system to work; the mechanical arm is a six-axis high-precision mechanical arm; the robot has the beneficial effects that through automatic and intelligent machining, the machining efficiency is greatly improved, meanwhile, by means of the visual system and the electric control system, the consistency of the machining precision and the product quality is ensured, the upper computer system supports intelligent management, the machining efficiency is greatly improved, and the production cost is reduced. Enterprises can quickly respond to market changes, and the production flexibility is improved.

The present disclosure provides a fiducial screw system (100). The system (100) comprises a fiducial screw (106) having a screw shaft (108) configured to be inserted into a bone material (102) and a screw head (110) having or forming a fastening interface (126) configured to cooperate with a fastening tool for inserting the fiducial screw (106) into the bone material (102). The system further comprises an elongated tube (112) forming a guiding channel (116), wherein the elongated tube (112) has a proximal longitudinal end (118) and a distal longitudinal end (120), and wherein the distal longitudinal end (120) is shaped to be attachable or attached to the fiducial screw (106), e.g., to its head (110), and the proximal longitudinal end (118) forms a guiding opening (122) leading into the guiding channel (116).

The utility model relates to the technical field of automatic assembly, in particular to a sleeve device and a screw locking system. The sleeve device comprises a sleeve body and an adsorption part, the adsorption part is arranged at one end of the sleeve body in the axial direction, an adsorption surface is arranged at one end, away from the sleeve body, of the adsorption part, an included angle is formed between the adsorption surface and a first direction, and the first direction is perpendicular to the axis of the sleeve body. When inclined locking is carried out, the adsorption part adsorbs the screw in an inclined mode so that the screw can be right opposite to the screw hole, the screw and the screw hole can be coaxial, tooth recognition is facilitated, the tooth recognition stability is ensured, meanwhile, the contact area of the screwdriver head and the screw groove is increased, the risk of tooth loosening is reduced, and the screw assembling efficiency is improved. According to the screw locking system provided by the utility model, by applying the sleeve device, the tooth recognizing stability can be ensured, the contact area between the screwdriver bit and the screw groove is increased, and the risk of screw loosening is reduced.

The utility model relates to the technical field of refrigerating systems, and provides a refrigeration oil balancing device for multiple units of a refrigeration house, the refrigeration oil balancing device comprises an oil return pipeline and an oil supply electromagnetic valve, the input end of the oil return pipeline is communicated with a quick freezing system and a double-helix system, and the output end of the oil return pipeline is communicated with a low-temperature refrigeration house unit; the oil return pipeline is used for conveying refrigerant oil; the oil supply electromagnetic valve is connected to the oil return pipeline and used for controlling refrigerant oil to be conveyed along the oil return pipeline. The low-temperature refrigerator unit has the effect of balancing the oil level in the low-temperature refrigerator unit.

The low-alloy steel stand column base polishing device comprises a machining table and a workpiece fixing system which is arranged on the two sides of the machining table and composed of a movable seat and a clamping plate, the outer side of the machining table is connected with a top plate through an electric rod, a main control circuit board is embedded in the top plate, and a vertical lead screw driven by a third driving motor is arranged below the top plate; a vertical sliding block arranged on the surface of the fixing base in a sleeving mode is connected with a transverse lead screw driven by a fourth driving motor, an adjusting base is installed below the transverse sliding block, and pitching adjustment of the fixing base is achieved through a fifth driving motor and a sixth driving motor on the adjusting base through a rotating shaft, a driving bevel gear, a driven bevel gear and a U-shaped connecting plate. The front face and the back face of the adjusting base are provided with cameras for providing visual feedback, a pressure sensor is installed on the top of the fixing base, a polishing wheel driven by a seventh driving motor is arranged at the bottom of the fixing base, accurate positioning can be achieved through a double-lead-screw system, and multi-angle adjustment is completed by combining a bevel gear set, a U-shaped connecting plate and a double-motor driving mechanism.

A screwing system (10) for automatically carrying out screwing operations, comprising a screwing tool (24), a feed device (42) for automatically feeding screws, a hold-down device (28) for supporting the screwing system (10) on two components (36, 38) to be screwed together, a positioning head (26) for positioning a fed screw (40) relative to the components (36, 38) to be screwed together, and a feed device (16) for advancing the screwing tool (24) in a feed direction, characterized in that the positioning head (26) is mounted on the hold-down device (28) so as to be displaceable in the feed direction relative to the hold-down device (28), and in that the positioning head (26) comprises a holding mechanism (44) for holding the fed screw (40).

The present invention relates to a screw element (1) having a force application point (8) for an actuating tool (9), wherein the force application point (8) has a plurality of projections (10) and recesses (11) arranged in a distributed manner over a circumference about a central axis (M), wherein the projections (10) and recesses (11) are formed by alternately merging first surfaces (12) and second surfaces (13), wherein the first surfaces (12) are elliptically curved, and wherein the ellipses (14) on which a curvature of the first surfaces (12) is based are oriented radially with respect to the central axis (M) with a shorter ellipse axis. A screw element, which guarantees improved torque transmission with the best possible compatibility with known force application points, is achieved by virtue of the second surfaces (13) each having a first circular-arc-shaped partial surface (13a) and a second circular-arc-shaped partial surface (13b).

A length adjustable modular screw includes a neck assembly, and a shank having a socket adapted to coaxially receive at least distal portion of the neck assembly, the neck assembly having first and second expansion components, each comprising a proximal head portion, which head portions are matable to form a screw head. Each of the neck assembly components includes an elongate end, wherein the elongate end of the first expansion component is slidable within a through channel in the second expansion component along a common axis. The length adjustable modular screw has a length that is selected by contacting a distal tip of the first expansion component inserted within the through channel of the second expansion component to forcibly splay and displace a distal locking feature of the neck assembly into interfering contact with at least a portion of an interior wall of the shank socket to thereby lock axial translation of the neck assembly within the shank.

The invention relates to an automatic dismounting method for a substrate of additive manufacturing equipment, belongs to the technical field of additive manufacturing, and is used for solving one of the problems that in the prior art, the substrate dismounting convenience is poor, the substrate is not easy to dismount due to deformation, and time and labor are wasted during dismounting due to non-uniform stress of screws. The method comprises the following steps that firstly, after printing is completed, a piston assembly drives a forming base plate to ascend to the upper end of a cylinder body; and secondly, the automatic screw screwing system dismantles the screws on the base plate. According to the invention, the disassembly and assembly convenience of the existing substrate can be improved, the additive manufacturing efficiency is improved, and the additive manufacturing is not influenced by automatic disassembly of equipment.