182 results about "Screw position" patented technology

A friction stir additive welding device configured to join a first work-piece and second work-piece is provided. In one aspect, the device includes a nosecone having a sidewall extending from a first end to a second end, a channel extending from the first end to the second end along a longitudinal axis of the nosecone, and a screw positioned within the channel. The first end is configured to couple the nosecone to a robotic arm and the second end has a surface configured to be advanced along a weld line between the first and second work-pieces. A central axis of the screw defines an angle that is less than 90 degrees relative to a plane that is perpendicular to surfaces of the first and second work-pieces as the surface of the nosecone advances along the weld line.

The invention relates to the technical field of precise injection molding, and discloses an injection process optimization method for a precise long and thin-wall product, computer equipment and a medium, the method comprises the following steps: S1, dynamically optimizing a screw position of a V / P switching point through a simulation experiment and regression analysis, and specifically comprises the following steps: S101, setting initial injection process parameters, carrying out an experiment by utilizing injection molding simulation software; s102, based on experimental data, adopting second-order polynomial regression analysis to construct a prediction model of the width w (x) and the thickness t (x) of the far gate region and the position x of the screw; and S2, on the basis of the solidification time, the pressure distribution in the mold cavity is adjusted by adopting stepped decreasing multi-section pressure maintaining control. According to the method, the problem of dimensional deviation caused by insufficient pressure of a far pouring gate area of the long thin-wall plastic part is solved by dynamically optimizing the position of the screw at the V / P switching point and performing stepped multi-section pressure maintaining control, so that the width and thickness tolerances of the near pouring gate area and the far pouring gate area meet the design requirements.

The invention relates to a screw planning method and a rod penetrating navigation method for a spinal screw placement operation. The method comprises the steps that initial screw positions are obtained through planning according to a screw planning algorithm, and the initial screw positions comprise the positions of a plurality of screws needing to be set; according to the initial screw position and the screw size, a target screw rod path meeting a preset optimization condition is screened, and a screw rod is used for penetrating through a plurality of screws; and determining the target screw position according to the target screw rod path. The problems that in the prior art, a screw planning algorithm has certain errors, needs to be manually adjusted in an open type operation and is difficult to apply to a minimally invasive screw placement operation are solved.

The utility model relates to the technical field of screw machines, and discloses a screw adsorption structure for a screw machine, which comprises a conveying mechanism, a fixing mechanism, a rebounding mechanism and an outer frame mechanism, the bottom end of the conveying mechanism is connected with the side surface of the outer frame mechanism, the top end of the fixing mechanism is fixedly connected with the bottom end of the outer frame mechanism, and the rebounding mechanism is fixedly connected with the bottom end of the conveying mechanism. The side face of the fixing mechanism is connected with the inner side of the conveying mechanism, the conveying mechanism comprises a conveying pipe, an air supply pipe and an air suction pipe, the top end of the conveying pipe is fixedly connected with a connecting cavity, the top end of the connecting cavity is fixedly connected with the bottom end of the air supply pipe, and a rotating groove is formed in the side face of the connecting cavity; by arranging the air suction pipe, the screw stably slides off, accurate positioning of the screw is facilitated, inaccurate screw position caused by external force interference is avoided, and accuracy of the screw entering a target hole site is guaranteed; by arranging the annular magnet, the screw is stably fixed on the assembling head of the machine, and the screw can be prevented from falling off or deviating from the target position in the carrying, conveying or assembling process.

The invention provides an automobile part injection molding parameter control method and device, equipment and a medium. The method comprises the steps that feature extraction is conducted on nozzle pressure waveform data and a screw position sequence which are synchronously collected to generate a process feature set, V / P switching point calibration is conducted on the process feature set to generate optimized V / P switching point parameters, and injection molding speed optimization is conducted on the process feature set to generate optimized injection molding speed parameters. According to the optimized V / P switching point parameter and the optimized injection molding speed parameter, an injection molding simulation test is carried out to set an optimized dwell pressure parameter, and according to the optimized dwell pressure parameter, the optimized injection molding speed parameter and the optimized V / P switching point parameter, fluid-solid coupling simulation is carried out to generate an optimized mold clamping force parameter. And generating a production control adjustment instruction according to the nozzle pressure waveform data in the production process. By calibrating the V / P switching and injection speed and optimizing the pressure maintaining and mold clamping force, self-adaptive closed-loop optimization of process parameters is achieved, and the stability of the product size and appearance is guaranteed.

The utility model provides an electric screwdriver with a temperature control alarm function, and belongs to the technical field of electric tools, the electric screwdriver comprises a machine body, a screwdriver head arranged at the end of the machine body, a temperature control assembly arranged at the other end of the machine body and a limiting assembly arranged on the outer side of the screwdriver head, and the temperature control assembly comprises an isolation ring arranged at the end of the machine body. According to the scheme, the sleeve and the elastic piece are arranged, the sleeve is connected to the outer side of the step at the end of the machine body and shields the screwdriver bit, the through groove formed in the side wall of the sleeve facilitates screw assembling, the screw is clamped through the elastic piece, the pointed end of the screw is fixed, the screw is not prone to falling off from the sleeve, and meanwhile the accuracy of the position of the screw is guaranteed; and the screw tip sliding condition in the screwing process is reduced.

Method for installing a seat belt assembly (19) into a vehicle body (50), in which, in a pre-assembly process step (V), functional elements (20, 21, 23, 24) of the seat belt assembly (19) and / or a pillar trim (17) are pre-assembled on a module carrier (9; 14) to form a pre-assembly unit (VM), and in an automated assembly process step (ZSB), the pre-assembly unit (VM) is joined by means of at least one robot (60) to at least one pillar-side connection point (S) of a body pillar (3), in particular a B-pillar, in a joining direction (F1, F2) from the vehicle interior to an inner side of the body pillar (3) facing the vehicle interior, characterized in that the pillar-side connection point (S) is a screw connection in which the pre-assembly unit (VM) is clamped to the body pillar (3) by means of a screw bolt (45).wherein the assembly process step (ZSB) is divided into a feeding sub-step in which the pre-assembly unit (VM) is guided in the joining direction (F1, F2) to the body pillar (3), a pre-positioning sub-step in which the pre-assembly unit (VM) is correctly pre-positioned in a screw position (SP) on the body pillar (3), and an assembly sub-step in which the pre-assembly unit (VM) is screwed to the body pillar (3), wherein the pre-assembly unit (VM) and the body pillar (3) have a positioning aid (P) by means of which the pre-assembly unit (VM) is pre-positioned in the screw position (SP), and in particular, of the two joining partners, i.e., the pre-assembly unit (VM) and the body pillar (3), a first joining partner has a cam pin (55) which interacts with a cam track (49) of the second joining partner,so that pre-positioning is achieved by loosely hooking the pre-assembly unit (VM) into the body pillar (3).

The double-station instrument mask ring installing machine comprises a rack and a rotating mechanism installed in the rack, the top of the rotating mechanism rotates to drive a rotating supporting plate, and two station locking mechanisms are symmetrically arranged on the two sides of the upper portion of the rotating supporting plate; a positioning base table used for placing an instrument shell is arranged at the position, located in the middle of the station locking mechanism, above the rotary supporting plate. A lifting servo transmission mechanism is installed above the machine frame and located on the rear side of the rotating supporting plate, a rotating mechanism is installed on a sliding piece on the front side of the lifting servo transmission mechanism, and a pneumatic chuck is installed at the output end below the rotating mechanism and located above the positioning base table. In the installation process of one instrument, the installed instrument on the other station locking mechanism and an instrument shell of a cover ring to be installed are installed and replaced, and the installation efficiency is greatly improved; when the rotating servo motor performs angle rotation, the lifting power servo motor drives the rotating mechanism and the cover ring to continuously rotate downwards until the screwing position of the cover ring clamping groove and the watchcase buckle meets the process and quality requirements, and the whole screwing action is completely consistent with the action of manually locking the cover ring.

The utility model discloses an automatic screw machine which comprises a working table, a screw conveying device, a taking and placing assembly, a screw screwing assembly and a screw positioning assembly, and the screw positioning assembly is arranged on the front side of the screw screwing assembly. The screw positioning assembly comprises a positioning plate, a first limiting block, a second limiting block, a cylinder, a positioning shell, a first spring, a first buckle, a second buckle, a connecting plate, a moving plate and a positioning circular ring, a first positioning groove is formed in the top of the positioning plate, the first limiting block is slidably installed in the first positioning groove, and the moving plate is slidably installed at the top of the positioning plate. By means of the screw positioning assembly, a worker can conveniently and rapidly control limiting between the movable plate and the positioning plate and adjust the position of a screw, and therefore the situation that friction force between the movable plate and the positioning plate is large is prevented. Therefore, the situation that friction force between the movable plate and the positioning plate is small and the movable plate is driven by vibration to move is prevented, and the working efficiency of the automatic screw machine is improved.

The utility model relates to the technical field of extruders, in particular to a temperature control device of an extruder, which comprises a screw cylinder, a screw positioned in the screw cylinder and a transmission system positioned at one end of the screw cylinder, at least one temperature control unit is arranged on the screw cylinder, and the temperature control unit comprises an electric heating tube spirally distributed on the outer wall of the screw cylinder. The electric heating tube is provided with a fluid channel, the fluid channel is filled with heat conduction liquid, one end of the electric heating tube is a fluid discharge end, the other end of the electric heating tube is a fluid inlet end, and a fluid circulation cooling assembly is installed between the fluid discharge end and the fluid inlet end in a communicated mode. Due to the fact that the electric heating pipe not only has the heating function, but also has the cooling function, the electric heating pipe can be regarded as a heating assembly integrally distributed outside the screw barrel, and can also be regarded as a cooling assembly integrally distributed outside the screw barrel. The device is higher in heating and cooling efficiency and more uniform in heating and cooling.

The utility model discloses a multi-layer corrugated carton packaging and nailing device, and relates to the technical field of corrugated carton packaging, the multi-layer corrugated carton packaging and nailing device comprises a bottom plate, a transmission system and a nailing head, the upper surface of the bottom plate is fixedly connected with a fixed block, a circular ring block is arranged above the fixed block, a rack is arranged above the circular ring block, and the transmission system is connected with the nailing head. When the nailing device is used, an output shaft of the motor is started to drive the screw rod to rotate, the annular side face of the screw rod is rotationally connected with the second fixing frame, and the second fixing frame is fixedly connected to the inner wall of the fixing block, so that fixation of the position of the screw rod is guaranteed; the motor is fixed in the fixing block through a first fixing frame arranged on the motor, the supporting block connected to the screw in a sleeving mode vertically moves up and down under the action of threads when the screw rotates, the supporting block drives the circular ring block fixed to the supporting block to move together in the moving process, and the circular ring block drives the whole rack arranged above to move when moving.

The invention relates to the field of petroleum sampling, in particular to a petroleum sampling device and a sampling method.The petroleum sampling device comprises a supporting disc, five telescopic sampling pipes are fixedly connected to the bottom of the supporting disc at equal intervals along the circumference, and five rectangular grooves are formed in the surface of the supporting disc at equal intervals along the circumference; the five rectangular grooves are in one-to-one correspondence with the five telescopic sampling pipes, telescopic mechanisms are movably connected between the surfaces of the telescopic sampling pipes and the inner walls of the rectangular grooves, an adjusting groove is formed in the middle of the top of the supporting disc, and an adjusting gear ring is rotationally connected into the adjusting groove. The petroleum sampling device consists of a telescopic mechanism and an adjusting mechanism, by rotating an adjusting gear ring on the adjusting mechanism, five pressing racks synchronously move to abut against the positions of corresponding adjusting screw rods on the telescopic mechanism, at the moment, five different telescopic sampling pipes on the telescopic mechanism synchronously stretch out, petroleum at different depth positions in the oil tank can be conveniently sampled at the same time, and the use convenience is improved.

The utility model provides a screw locking work station of circuit breaker shell assembling equipment, which comprises a screw locking work table, a circuit breaker shell is arranged on the screw locking work table, a support frame is arranged on the circuit breaker shell, an arc-shaped base is arranged on the support frame, and a lifting adjusting power mechanism is arranged on the support frame. The lifting adjusting power mechanism is connected with the lifting adjusting frame body structure, and screws are locked on the circuit breaker shell through the lifting adjusting power mechanism and the screw locking power mechanism. The lifting adjusting frame body structure stably slides on the supporting frame through the sliding sleeve, the sliding range is limited through the upper limiting block and the lower limiting block, excessive lifting is avoided, and the whole operation process is more stable and reliable. And through the arrangement of a spring, a buffer groove and a stop lever on the power transmission shaft, the impact force caused by rotation of the motor is effectively reduced. The height can be flexibly adjusted through the lifting adjusting mechanism according to different circuit breaker shell specifications and screw locking positions, and various assembly requirements are met.

The utility model provides an automatic assembly device for an electric control cabinet, a target transfer mechanism comprises a first fixed base, a first displacement device and a clamping device, the first displacement device is movably assembled on the first fixed base, and the clamping device is arranged on the first displacement device; the first displacement device moves the clamping device relative to the first fixed base according to the spatial positioning data, the clamping device clamps the electric control cabinet, the cooperative assembly mechanism comprises a second fixed base, a second displacement device and a nail screwing device, the second displacement device is movably assembled on the second fixed base, the nail screwing device is arranged on the second displacement device, and the second displacement device is movably assembled on the second fixed base. And the second displacement device moves the screw tightening device relative to the second fixed base according to the spatial positioning data, and the screw tightening device tightens the mounting screw at the tightening position of the electric control cabinet. Therefore, through cooperation of the visual positioning mechanism, the target transfer mechanism and the cooperative assembly mechanism, automatic assembly and automatic tightening of the electric control cabinet can be realized, so that the operation efficiency is improved, the number of operators is reduced, and the man-machine engineering is improved.

The invention provides an SCARA robot and a control method and device thereof, a medium and a computer program product. The control method of the SCARA robot comprises the steps that a kinetic model of the SCARA robot is established according to joint information, motion information and lead screw information of the SCARA robot; according to the expected joint track, the expected lead screw position and the lead screw information of the SCARA robot, a corrected joint track of the SCARA robot is determined; according to the dynamic model and the corrected joint track, the screw rod vibration error and the screw rod vibration rule of the SCARA robot are determined; and control input information of the SCARA robot is determined according to the corrected joint track, the lead screw vibration error and the lead screw vibration rule. By means of the control method, the influence of lead screw shaking on the SCARA robot can be considered, and the precision of controlling the SCARA robot to move is improved.

The utility model relates to the technical field of flow meters, and discloses a single-screw flow meter capable of realizing quick installation, which comprises a first shell and a second shell which are communicated with each other, a screw is arranged in the first shell along the axial direction, a magnetic ring is arranged at one end of the screw positioned in the second shell, and a magnetic pole is arranged on the end face of one end of the magnetic ring far away from the screw. A third shell is arranged on the outer side face of the second shell, an induction chip is arranged in the third shell, and the induction end of the induction chip is right opposite to the magnetic pole. By forming the positioning groove in the third cavity and adopting the third shell and the second shell which are detachably connected, on one hand, the induction chip in the third cavity can be accurately positioned, deviation of the installation position of the induction chip is prevented, it is guaranteed that the induction chip is right opposite to the magnetic pole, and therefore the detection precision of the induction chip is improved; when the sensing chip needs to be maintained or replaced in later operation, the sensing chip can be quickly disassembled and assembled, and it is ensured that the flowmeter is put into use again within a short time.

The invention discloses a position identification method, device and equipment for a vehicle rear rotating lead screw, a medium and a product. The method comprises the following steps: in response to a position identification request for a backward rotating screw rod of a target vehicle in a current vehicle ignition period, acquiring current position information of the backward rotating screw rod acquired by a screw rod position sensor deployed on the target vehicle; acquiring current displacement information of the backward rotating screw rod acquired by a screw rod displacement sensor deployed on the target vehicle; determining a midpoint deviation value of the backward rotating screw rod and a linear deviation value of a screw rod position sensor; if it is determined that the backward rotation lead screw meets a preset position identification judgment condition according to the current position information, a lead screw gap difference value of the backward rotation lead screw is obtained, and target displacement information of the backward rotation lead screw is determined according to the current displacement information and the lead screw gap difference value; and according to the midpoint deviation value, the linear deviation value, the target displacement information and the current position information, the position recognition result of the backward rotation lead screw in the current vehicle ignition period is determined.

The present invention discloses a highly protective explosion-proof cable entry device and its sealing method. The structures of the sealing ring and the inner hole of the boss are redesigned, greatly improving the sealing effect, enabling the protection level to reach IP68, allowing it to be used underwater, and having more reliable sealing; the maximum compression rate of the sealing ring is specified, a sealing material with excellent performance is selected, and a limiting measure is adopted for the screwing position of the compression nut, significantly improving the service life; the compression nut adopts a loosening prevention measure, which can effectively avoid sealing failure. Through the above measures, the present invention effectively solves the disadvantages existing in the existing explosion-proof cable entry devices.

The utility model discloses a fixture for polishing a connector base, which comprises a frame body, a turntable is rotatably connected in the frame body, a plurality of inclined chutes are arranged on one side of the turntable, sliders are slidably connected in the chutes, one end of each slider is fixedly connected with a clamping rod, and one side of the turntable is fixedly connected with a support frame. One side of the supporting frame is fixedly connected with a rotating motor, one end of an output shaft of the rotating motor penetrates through the supporting frame and is fixedly provided with a second threaded rod through a coupler, the outer side of the second threaded rod is in threaded connection with a second threaded sleeve, and the outer side of the second threaded sleeve is rotationally connected with a plurality of connecting rods through a plurality of bearing seats; and the other end of the connecting rod is rotationally connected with the sliding block through a bearing seat. According to the fixture, different sizes of connector bases can be clamped and fixed, the application range of the fixture is widened, the position of a screw can be adjusted in the mounting hole, and therefore the position of the screw is changed, and a worker can mount and fix a frame body conveniently.

The invention relates to the technical field of injection molding machine pressure maintaining control, in particular to an injection molding machine pressure maintaining point switching method based on a screw position, which comprises the following steps: S1, calculating according to the injection pressure of an injection molding machine to obtain an injection time standard curve area; s2, switching the injection molding machine into a full-automatic production mode; s3, in the full-automatic production mode, filtering processing and curve area calculation are executed in real time, and the real-time curve area of the current period is obtained; s4, planning a screw speed reduction process based on the exponential speed curve, and reducing the speed of the injection screw to a pressure maintaining point; s5, updating the value of the attenuation coefficient k according to the actual speed of the screw at the pressure maintaining point; according to the method, the injection pressure and injection time curve area value is used as a judgment basis for setting of the pressure transfer and maintaining advanced deceleration point, the overshoot phenomenon in the injection process can be effectively restrained, and the response precision and stability of pressure transfer and maintaining control are remarkably improved.

The utility model relates to the technical field of wind power construction, and discloses a screwing positioning device for wind power construction. The driving assembly is arranged at the top of the fixing seat; the fixing assembly is mounted at the bottom of the fixing seat; the two connecting bases are fixedly connected to the inner side of the through groove, one end of the cylinder is rotationally connected to the interiors of the connecting bases, a first hexagonal hole is formed in the cylinder, the driven gear is fixedly connected to the top of the cylinder, and a second hexagonal hole is formed in the top of the driven gear; a connector of an electric wrench is inserted into a third hexagonal hole in a fixing column, then the fixing column drives a driving gear to rotate, the driving gear drives a fixing ring to rotate through outer teeth, and the fixing ring drives two driven gears to rotate in the same direction through inner teeth. And by screwing the two nuts at the same time, time and labor are saved, and the nut screwing efficiency is effectively improved.

The application discloses a light-weight split type centering structure suitable for a sub-caliber dynamic accelerating device and belongs to the technical field of special launching. The application comprises a front centering part, a rear centering part and an adjusting mechanism; the front centering part is composed of a plurality of annular supports with the same structure according to the length of a projectile body and is sequentially sleeved on the projectile body; the rear centering part is connected with the sleeve through a center blind hole; the bottom surface of the center blind hole of the rear centering part abuts against the tail end surface of the projectile body; the adjusting mechanism is composed of a long screw rod and a plurality of nuts; the position of the annular support of the front centering part is adjusted by adjusting the screwing position; the application reduces the proportion of useless projectile support mass in the launching mass; under the condition of the same launching propellant amount, the projectile body obtains a higher speed, and the design index of reducing the launching mass is realized.

The utility model discloses an outer guide metal solid cage ball loading device for a double-half inner ring ball bearing in the technical field of double-half inner ring ball bearing processing, which comprises a bottom plate, a ball loading positioning seat is mounted on one side of the top of the bottom plate, and a compression bar seat is mounted on the other side of the top of the bottom plate. According to the utility model, the bearing outer ring is placed in the arc groove on the ball adding positioning seat, the steel ball is placed at the metal solid retainer in the bearing outer ring, and the front end of the pressing block on the pressing rod is positioned in the metal solid retainer, so that the pressing rod is pulled downwards by the pressing block according to the lever principle; the top of the baffle plate under the pressing block is in threaded connection with the limiting screw, so that after the pressing block is pressed downwards, the limiting screw performs limiting treatment, and the situation that the steel balls and a raceway of the bearing outer ring are damaged due to over-position of the pressing ball is prevented.

The invention relates to a traction battery (100) of an electric vehicle, comprising an arrangement of interconnected individual cells in a battery housing (110), having a housing lower part (200) and a housing upper part (300) connected to the housing lower part (200) at several screw positions (400), wherein the housing upper part (300) has a nut (430) at each screw position (400) on its underside (301) facing the housing lower part (200), the housing lower part (200) has a through hole (410) at each screw position (400), and at each screw position (400) screws (420) are guided from an underside (201) of the housing lower part (200) through the through holes (410) and screwed into the nuts (430).

The utility model discloses a correction structure for high-precision machining of a workpiece numerical control machine tool, relates to the technical field of workpiece machining, and solves the problems that in an existing structure, after a workpiece is fixed, position adjustment needs to be conducted through movable bolts, a plurality of movable bolts need to be rotated in sequence, operation is inconvenient, and the position of a screw is fixed; in order to solve the problems that in the prior art, workpieces with different widths can not be adjusted according to the workpieces with the different widths, according to the scheme, the adjusting device comprises a base and is characterized in that a longitudinal adjusting mechanism is installed in the base, and a transverse adjusting mechanism is installed in the movable end of the longitudinal adjusting mechanism. After a workpiece is clamped, longitudinal and transverse fine adjustment can be carried out on the workpiece, so that the high-precision adjustment effect is achieved, two adjusting blocks and a locking bolt can be driven to move relatively through rotation of an adjustable workpiece clamping mechanism and a bidirectional lead screw, and then the top of the workpiece can be pressed and fixed by rotating the locking bolt.

One aspect of the disclosure relates to an extramedullary distraction and compression system. The extramedullary distraction system includes: a housing configured to be attached to a bone at a first location, the housing having a magnet and a lead screw positioned therein, wherein the lead screw is coupled to the magnet such that rotation of the magnet causes rotation of the lead screw, at least one retainer clip disposed around the lead screw; a rod configured to be attached to the bone at a second location and configured to interact with the lead screw such that, upon rotation of the lead screw, the rod distracts or contracts relative to the housing.

A screw adjustment method in a thermosetting resin injection molding machine including a cylinder having a nozzle at a tip end of the cylinder and a screw accommodated in the cylinder. The screw adjustment method includes: contacting a screw and nozzle including bringing a tip end surface of the screw into contact with a tip end inner surface of an inner peripheral surface of the nozzle; moving the screw backward by a specified length after the contacting of the screw and the nozzle; and determining a screw position of the screw moved backward as a most forward position of the screw in a molding cycle.

The instant electric heater for a fluid comprises an axial metal tube, electric resistive means positioned on an outer surface of the metal tube, an inlet manifold body and an outlet manifold body positioned at the ends of the metal tube, a screw positioned along an internal axial cavity of the metal tube and having a thread delimiting, with an inner surface of the metal tube, a helical channel for conveying the fluid from the inlet manifold body to the outlet manifold body, temperature sensor means for sensing the temperature of the fluid, and an outer casing for the protection of the metal tube, the electric resistive means comprising at least a first electric heating element and a second electric heating element that can be independently powered.