17results about How to "Avoid tremors" patented technology

The invention belongs to the technical field of mechanical manufacturing equipment, and particularly relates to a deformation control machining method for an aircraft alloy steel structural part and a self-adaptive clamping device. The device comprises a bottom plate (1), a spring steel sheet (2) and a plurality of process laps (3), the bottom plate (1) is a rectangular base, mounting grooves (10) are distributed in the upper end face of the bottom plate in an equally-spaced matrix array mode, and the spring steel sheets (2) are mounted in the mounting grooves (10). Threaded holes (4) and positioning pin holes (5) are distributed in the upper end face of the bottom plate at equal intervals in an array mode. A plurality of process laps are connected to the periphery of the structural part to be machined, two of the process laps (3) are installed on the positioning pin holes (5) located in the same straight line to form a machining reference axis, and the other process laps (3) are distributed on the two sides of the reference axis; the process lap (3) is provided with a groove (6) in the thickness direction of the blank, a pressing plate is clamped in the groove, and the pressing plate is locked and fixed to the bottom plate through a bolt.

The invention relates to an image data display method and device, electronic equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: acquiring eyeball movement information and head movement information corresponding to image data to be displayed; determining a fixation point offset based on the eyeball movement information and the head movement information; determining a compensation offset corresponding to the to-be-displayed image data based on the fixation point offset and the image reduction scale; determining a target display position of the to-be-displayed image data based on the compensation offset; and displaying the to-be-displayed image data based on the target display position. By adopting the method, the effect of preventing motion sickness can be achieved.

This invention relates to the field of vapor phase etching (VPE) apparatus technology, specifically a double-sided VPE apparatus for semiconductor silicon wafers. The apparatus includes a VPE apparatus body, a silicon wafer transfer mechanism at the upper end of the apparatus body, an etching chamber fixedly mounted on the outer side of the apparatus body, and a mounting base fixedly mounted on the upper end of the etching chamber. By combining the VPE mechanism with a central air-guiding mechanism, stable adsorption of the semiconductor silicon wafer is ensured during the etching process, avoiding vibration and improving etching efficiency and precision. A Bernoulli-style chuck structure is formed by the cooperation of the air-guiding support stage and the central stage, stably "fixing" the silicon wafer above the air-guiding support stage, minimizing contact with the semiconductor silicon wafer, avoiding physical damage and contamination, and simultaneously enabling multi-directional airflow distribution to meet auxiliary heat dissipation needs for the semiconductor silicon wafer, further improving the accuracy and etching efficiency of the VPE process.

The application discloses a kind of wire tin-coating quick cooling mechanism, including fixedly arranged on base frame and air-cooled track, the upper end of frame is provided with traction assembly, wire is after being coated with tin in base and is connected with traction assembly again after passing air-cooled track upward, further include: flap, which is hinged with air-cooled track, for controlling the opening and closing of the side of air-cooled track;Isolation component is isolated and arranged in air-cooled track, and a plurality of air holes for communicating outside air with positioning channel are symmetrically arranged on the side wall thereof for wire to pass through.The application can close the open side of air-cooled track when air-cooled track is working, and under the cooperation of first blowing assembly and second blowing assembly, the airflow in air-cooled track blows from middle to up and down sides, so that the wire is balanced, in addition, the airflow opposite to the upper and lower ends can pull the wire tight to the two ends, to avoid wire relaxation.

The utility model discloses a kind of infinitely variable gearbox body combination tooling fixtures, including basic support module, one sequence blank positioning and clamping module and two sequence semi-finished product positioning and clamping module, one sequence blank positioning and clamping module is used to position and clamping to one sequence box body blank, two sequence semi-finished product positioning and clamping module is used to position and clamping to semi-finished product box body after completing one sequence processing, basic support module simultaneously carries one sequence blank positioning and clamping module and two sequence semi-finished product positioning and clamping module;One sequence blank positioning and clamping module is composed of adjustable support column, three groups of pressing plate, lateral jackscrew, anti-vibration clamp plate, mistake-preventing limiting column and positioning pin, complete rough machining;Two sequence semi-finished product positioning and clamping module utilizes the support seat of eight with M8 thread hole of top plate even distribution, semi-finished product flange edge is compressed by M8 bolt, continue finish machining.The combination tooling fixture of the utility model, two sequence processing can be continuously completed in one clamping of same fixture, reference is unified, production efficiency is greatly improved.

The present application relates to the technical fields of tank truck filling, and discloses a liquid chlorine tank truck filling device, which comprises a supporting column, the outer wall of the supporting column is provided with a plurality of conveying pipes, the outer wall of each conveying pipe is fixedly connected with a flange plate, the side of each conveying pipe away from the flange plate is rotatably connected with a rotary joint, and the outer wall of each conveying pipe is fixedly connected with a balancer, when the second fixing disc suddenly rotates, the limiting rod moves to the right side under the influence of centrifugal force, the limiting rod is in contact with the side wall of the second limiting groove, so that relative stillness is generated between the first fixing disc and the rotary joint, the rotation of the conveying pipe at the inner wall of the rotary joint is limited, the problem that if the balancer matched with the crane pipe suddenly fails when the crane pipe is connected with the tank truck and enters the medium conveying operation stage, the conveying pipe body rotates uncontrollably at the rotary joint under the influence of the relatively large dead weight of the crane pipe body, and the structural damage of the filling joint and safety accidents are caused is effectively prevented.

The utility model relates to the technical field of circuit board production, and particularly discloses a circuit board milling groove clamping device which comprises a supporting box body, two limiting columns are fixedly connected to the interior of the supporting box body, two sliding rings are slidably connected to the outer portions of the limiting columns, and a connecting plate is fixedly connected to the outer portions of the two sliding rings. A mounting plate is fixedly connected to the close sides of the two connecting plates, two limiting plates are slidably connected into the mounting plate, a sliding groove is formed in the mounting plate, fixing plates are fixedly connected to the exteriors of the limiting plates, a sliding groove is formed in the top of each fixing plate, fixing columns are fixedly connected to the exteriors of the connecting plates, and driving assemblies are fixedly connected to the close sides of the two fixing columns. When the clamp is used, the motor of the driving assembly is started to drive the two-way threaded rod, so that the internal threaded blocks move oppositely, the fixed plate is pulled to shorten the distance for adaptation, time and energy consumption of frequent disassembly and reassembly of the clamp by operators are reduced, cost and clamp abrasion are reduced, and production efficiency is improved.

The utility model discloses a breather valve with an interchangeable valve seat, and relates to the field of petrochemical engineering. The breather valve comprises a valve body, a valve cover and a valve disc assembly, the valve cover is installed at the top of the valve body, the valve disc assembly comprises a positive pressure valve disc and a negative pressure valve disc, the positive pressure valve disc is arranged on a positive pressure valve seat in the valve body, a micro-leakage structure is arranged between the positive pressure valve disc and the negative pressure valve seat, the negative pressure valve disc is arranged on a negative pressure valve seat 9 in the valve body, and a micro-leakage structure is also arranged between the negative pressure valve seat 9 and the positive pressure valve disc. The micro-leakage structure comprises sealing grooves, sealing gaskets and leakage channels, the sealing grooves and the leakage channels are formed in the top of the positive pressure valve seat and the top of the negative pressure valve seat, the sealing gaskets are arranged at the bottom of the positive pressure valve disc and the bottom of the negative pressure valve disc, the sealing grooves are composed of a plurality of eccentric annular grooves, and the leakage channels are close to the sealing grooves and communicate with the sealing grooves. According to the utility model, the sealing groove is matched with the leakage channel to realize a micro pressure relief function, so that the valve disc is prevented from vibrating when gas pressure borne by the valve disc is close to an opening threshold value, and the problem of noise is solved.

The embodiment of the invention discloses a flexible device for a multi-station aircraft complex structural member and a multi-point equal symmetry machining method, in the flexible device, one or two flexible supports are installed on T-shaped grooves located in the same straight line to form a reference symmetry axis, and the other flexible supports are symmetrically installed on the T-shaped grooves in the two sides of the reference symmetry axis; one process lap is assembled at the end part of each group of process lugs of the joint part; wherein one or two process laps are installed on the corresponding flexible supports used for forming the reference symmetry axis and used for constructing the symmetry axis of the joint part, and the other process laps are installed on the flexible supports at the corresponding positions of the two sides of the reference symmetry axis. And after the joint parts and the process laps respectively mounted on the process lugs form a multi-point equal-symmetry mounting structure, the joint parts are mounted on the flexible supports at the corresponding positions through the process laps, and are positioned, mounted and locked. According to the technical scheme provided by the embodiment of the invention, the problems of time and labor waste, high machining difficulty, low machining efficiency and the like caused by the fact that part machining is realized through repeated clamping in an existing machining mode for aircraft parts with complex structures are solved.

The invention relates to a machining method for a thin-wall cabin section, belongs to the technical field of machining, and solves the problem of low machining precision of an inner cavity molded surface of a cabin section due to unstable clamping and high possibility of large vibration during machining when the inner cavity molded surface of the cabin section is machined. The method comprises the steps that S1, a clamping tool is installed on a machine tool workbench; s2, the to-be-machined cabin section is installed on the clamping tool, and the to-be-machined cabin section and the clamping tool form a rigid whole; and S3, the molded surface of the inner cavity of the cabin section to be machined is machined. The to-be-machined cabin section is fixed to the rotary table mechanism, so that the to-be-machined cabin section and the rotary table mechanism form a rigid whole, the clamping stability of the to-be-machined cabin section is improved, vibration in the machining process is prevented, and then the machining precision is improved.

The present invention relates to the technical field of light alloy manufacturing, and in particular to a processing mold and processing method for a thin-walled part with an annular groove on the end face; the processing mold comprises: a milling processing mold for processing the inner wall of the side of the thin-walled part and a lathe processing mold for processing the thin-walled end face with an annular groove; the milling processing mold is provided with a protective plate surrounding the side surface in a circumferential direction on the side of the thin-walled part; the lathe processing mold is provided with an external support structure for pressing the outside of the central annular end face of the thin-walled part and an internal support structure for supporting the inside of the central annular end face of the thin-walled part, and the external support structure and the internal support structure are used to keep the thin-walled part stable when processing the annular groove. The processing mold solves the deformation and vibration of the second end face during lathe processing and the side vibration during milling processing, and realizes high-precision and stable processing of the side wall and end face of magnesium alloy thin-walled parts.

The invention relates to a processing method of a thin-wall cabin. The processing method comprises the following steps: preparing a blank piece with inner cavity characteristics; a weak-rigidity thin-wall area of the blank piece is judged, and an anti-vibration piece is arranged in an inner cavity of the weak-rigidity thin-wall area; rough milling is conducted on the outer molded surface of the blank, and a process reinforcing rib is constructed in the weak-rigidity thin-wall area; finish milling is conducted on the outer molded surface, located outside the process reinforcing rib, in the weak-rigidity thin-wall area; and the process reinforcing ribs and the anti-vibration pieces are removed, and the target cabin is obtained. According to the machining method of the thin-wall cabin, vibration of the cabin in the follow-up machining process is reduced or avoided by arranging the anti-vibration piece, the rigidity is improved by constructing the process reinforcing ribs in the area of the weak-rigidity thin-wall cabin during rough milling, the positions except the process reinforcing ribs are milled firstly, then the process reinforcing ribs are removed, and the machining precision of the thin-wall cabin is improved. The machining quality of the thin-wall cabin is guaranteed, and the problem that in the prior art, when the thin-wall cabin is machined, the machining quality is poor is solved.

The utility model provides a safety valve with a limiting device. The safety valve with the limiting device comprises a connector; the threaded sleeve is installed at the position, located at the top, in the connector, the valve element sleeve is installed at the position, close to the bottom end, in the threaded sleeve, the valve element is installed in the valve element sleeve, the rectangular sealing ring is arranged at the top end of the valve element sleeve, and the ejector rod sleeve is installed at the position, close to the top end, in the threaded sleeve. An ejector rod is mounted in the ejector rod sleeve; and the valve shell is installed at the position, close to the top end, of the outer surface of the threaded sleeve, a spring seat is installed at the position, close to the bottom end, of the interior of the valve shell, a spring is installed at the top of the spring seat, and the top of the inner wall of the valve shell is in threaded connection with an adjusting screw. According to the safety valve with the limiting device, through the design, the moving stability of the valve element in the valve shell is improved, and impact on the valve element when the safety valve works is reduced.

The utility model belongs to the field of plowing agricultural machinery, and particularly relates to a saline-alkali soil plowing machine which comprises a machine frame connected with a tractor and a plowing assembly arranged on the machine frame. The driving box is located below a mulching film, one end of the supporting plate is connected with the driving box, the plowing shaft is located in front of the supporting plate, the included angle between the axis of the plowing shaft and the walking direction of a tractor is an acute angle, the front end of the plowing shaft is connected with the driving box, and the rear end of the plowing shaft and the other end of the supporting plate are connected with an installation frame. Ridge-shaped soil breaking shovels are arranged at the front end of the driving box and the front end of the mounting frame respectively, the plowing machine can conduct plowing operation on the land below a mulching film, the plowing shaft is stable in connection and not prone to vibration, and the service life of the plowing shaft is effectively prolonged.

The invention relates to the technical field of boiler waste gas treatment, in particular to a biomass boiler low-temperature catalytic absorption method desulfurization and denitrification device which comprises a liquid injection unit, a reaction unit and a proportioning unit which are sequentially distributed from left to right, and the reaction unit comprises a reduction tower body and a reactor fixedly communicated with the outer wall of the reduction tower body; a feeding pipe communicated with the proportioning unit is fixed on the outer wall of the reactor, and an exhaust funnel is fixed on the top side of the reduction tower body; a supporting assembly and a treatment device are arranged outside the reactor. According to the desulfurization and denitrification device adopting the low-temperature catalytic absorption method for the biomass boiler, outward expansion is achieved through the centrifugal effect, the vibration assembly is driven to clean ash of the reactor, meanwhile, the positioning block abuts against the inner wall of the guide frame, locking of the machine shell is achieved, the working efficiency and stability of the device are greatly improved, extra vibration is reduced, and the service life of the device is prolonged. The stability of the treatment device in the ash removal process is guaranteed, and the situation that the ash removal effect is affected by position deviation caused by vibration is avoided.

The utility model provides a kind of motor brake device, it is related to motor brake technical field, the utility model provides the motor brake device including brake assembly and motor assembly, brake assembly includes brake disc, base and the first brake pad of being installed on base, motor assembly includes end cover and the power output shaft of being rotationally cooperated with end cover, end cover and base adopt integrated structure, power output shaft is fixedly connected with brake disc.The utility model provides the motor brake device has reduced production cost and weight, improves brake system overall strength, enhances mechanical stability, satisfies high-strength brake demand and the like advantages.

The utility model discloses a broken bridge heat insulation aluminum alloy window with a noise reduction structure, which relates to the technical field of aluminum alloy windows and comprises a window frame and a noise reduction component. A window body is hinged to one end of the front side face of the window frame, a handle is installed on the front side face of the window body, a noise reduction assembly is installed in the window body, and a sealing unit is arranged in the window frame; the noise reduction assembly comprises low-radiation glass, a glue injection layer, tempered glass, an anti-explosion film and a protective film, the low-radiation glass and the tempered glass are both fixed in the window body, the glue injection layer is filled between the low-radiation glass and the tempered glass, and the anti-explosion film is bonded to the inner side face of the tempered glass. The multi-layer composite structure can effectively absorb noise of different frequency bands, the glue injection layer inhibits low-frequency resonance, the explosion-proof film enhances high-frequency reflection, and the micropore sound absorption layer improves low and medium frequency sound insulation performance, so that good sound insulation and noise reduction effects are achieved.