528 results about "Steel ball" patented technology

A safe valve can work stably in high and low temperature environment. It relates to the field of safe valve. The existing safe valve causes the steel ball to be stuck due to unreasonable structure, which seriously affects the normal operation of the lubricating oil system. The utility model discloses a safe movable shell, a nut, a sealing ring, a spring, a steel ball, a spring seat, an oil inlet and an oil outlet. The safe movable shell is provided with an oil inlet and an oil outlet respectively. The safe movable shell is fixedly connected with the nut. The sealing ring is arranged between the safe movable shell and the nut. The spring seat is arranged on the end of the nut close to the steel ball. The spring seat is connected with the safe movable shell and the nut respectively. The spring is arranged between the spring seat and the steel ball. The steel ball is assembled in the oil inlet of the safe movable shell through clearance fit and between the spring. The steel ball is pushed by the lubricating oil pressure. The steel ball pushes the spring to compress the spring. The opening and closing of the oil inlet by the steel ball are realized. The utility model is applied to the field of safe valve of lubricating oil system.

The utility model discloses a screw type ball lock, including machine screw and circular through -slot, machine screw is fixedly connected with the steel ball on, the utility model discloses, when screwing into machine screw, axial pressure makes the steel ball of machine screw tail radial elastic expansion, closely fits the sphere, forms initial sealing and frictional resistance, thread tooth extrusion circular through -slot, produces additional normal stress and enhances locking effect, and the pre -tightening force makes the static friction force between the connecting piece, offsets external vibration or lateral load, prevents machine screw rotation, when the connecting piece is deformed or the installation exists angle deviation, the sphere adjusts the angle and keeps even pressure tightly, and the continuous radial expansion of ring provides self -compensation pressure tightly, offsets the pre -tightening force attenuation caused by vibration, and the ring can effectively prevent internal lubricating oil from leaking outward, and the ring can synchronously block the invasion of external dust, metal scrapes and other pollutants into the shafting, and the bearing and precision movement parts are protected.

The utility model discloses a sliding table structure for linear module, including mounting seat and bearing seat, be equipped with mounting hole on the mounting seat, be equipped with internal thread on the inner wall of mounting hole, the both sides of mounting seat are equipped with the arc recess for containing the steel ball of linear module respectively, and the bearing seat is established at the top of mounting seat, and the both sides of bearing seat are equipped with boss part respectively, and the boss part is along the length direction arrangement of mounting seat. The utility model discloses a sliding table structure, because mounting seat is provided with internal thread, and the screw rod of linear module is placed in the internal thread on mounting seat, because the screw rod of linear module is connected through the thread with mounting seat, so can make the hole diameter of mounting hole on mounting seat and the outer diameter of screw rod are equivalent, effectively reduce the size of mounting seat in the longitudinal direction, thereby reduce the size of sliding table structure whole in the longitudinal direction, so can make sliding table structure applicable to the application scene of smaller space.

This invention discloses a hardening device and method for rolling bearing steel balls, relating to the field of surface hardening treatment technology. The hardening device includes a bath, an elastic base disposed below the bath, a working medium and steel balls inside the bath, the working medium comprising alloy element powder, abrasive powder, and a conductive solution, a pulsed plasma gun positioned above the bath, the outlet end of the pulsed plasma gun inserted into the bath with its axis intersecting the vertical axis of the bath at an acute angle, and an electromagnet for attracting steel balls mounted on the surface of the bath. A matching hardening method is also provided. The technical solution of this invention forms a high-hardness alloy layer on the surface of the steel ball, improving the hardening quality of the steel ball surface and enabling the steel ball to meet the performance requirements for use under high load and corrosive environments.

This utility model provides an extrusion forming mechanism for a side wall boss on an electric vehicle frame tube fitting, including a base. A fixing block is fixedly installed at the top of the base. A convex groove is formed on the top of the fixing block. An insert is embedded on one side of the convex groove, and a fixing cylinder is fixedly installed on the other side of the convex groove. An inclined top block is fixedly installed at the bottom of the inside of the fixing cylinder, and an extrusion steel ball is placed at the top of the inclined top block. An extrusion assembly is provided at the top of the inside of the fixing cylinder. When extruding a side wall boss on an electric vehicle frame tube fitting, this extrusion forming mechanism pushes the extrusion steel ball into the inside of the frame tube fitting plug through the extrusion assembly. The extrusion of the steel ball forms a boss on the side wall of the electric vehicle frame tube fitting, ensuring not only the curvature of the boss but also the uniform force on the side wall of the electric vehicle frame tube fitting during the extrusion process, thus ensuring the curvature and quality of the formed boss.

The present application relates to the field of guide rail, provide a kind of self-lubricating linear guide based on two steel ball structure, including slide rail, slider body, rotator, steel ball and dustproof sheet, slider body is slidably connected on slide rail;Arc clearance structure is opened in slider body, and rotator is embedded in arc clearance structure;Rotary passage is opened in rotator, and ball return hole is opened in slider body, and self-lubricating coating material is sprayed on the inner wall of ball return hole, and rotary passage and ball return hole form wireless circulation channel, and steel ball is filled in wireless circulation channel;Dustproof sheet is made using injection molding process, and dustproof sheet is provided with two, and dustproof sheet is provided with two connecting columns, four connecting holes are opened in slider body, and four connecting columns are respectively and four connecting holes interference fit.The present application simplifies structure and reduces cost, cancels screw fixed end cover and dustproof sheet step, reduces process, reduces production cost, and rotator is embedded in arc clearance structure, so that guide rail can withstand higher movement speed and use load.

The utility model belongs to the steel ball production equipment technical field, concretely relates to an improved steel ball cleaning equipment, including the cleaning tank and the pull -out plate, be provided with the cleaning room in the cleaning tank, be provided with linear guide rail at the top of cleaning room, erect the conveying pipe between linear guide rail, install a plurality of nozzles in the conveying pipe bottom, be provided with a plurality of storage material cylinders below the nozzle, even distribution has a plurality of through -holes on the storage material cylinder, install the fixed plate at both ends of storage material cylinder, install the pivot between fixed plate, pivot one end rotationally connects the bearing sleeve, bearing sleeve installs on the baffle, the other end transmission of pivot is connected with the drive motor, the both sides of baffle bottom and pull -out plate between install the slide rail, the slide rail is slidably installed on the slide base, the utility model discloses through a plurality of nozzles cooperation sliding block and linear guide rail, realize the movement of nozzle above storage material cylinder, utilize high -pressure impact water flow to make the cleaning efficiency obtain the improvement, and the rotation of storage material cylinder, make the impurity on the steel ball surface get the effective cleaning.

The invention discloses a machining tool that produces little wear at the joint of a main drive shaft (14) and a transmission shaft (5). The machining tool comprises an upper shaft (6) attached to a main machine device, a transmission shaft (5) inserted into the upper shaft (6), a main drive shaft (14) attached to the head of the transmission shaft (5), a holder (15) inserted into the head of the main drive shaft (14) and having a cutting tool attached thereto, a spherical bearing (4) supporting the outer side of the main drive shaft (14) so that the main drive shaft (14) can be tilted, a center steel ball (7) clamped between the recess of the head of the transmission shaft (5) and the opposite recess of the rear end of the main drive shaft (14), and an axial steel ball (10) disposed in the long groove (11) of the outer surface of the head of the transmission shaft (5) and in the hole (18) of the main drive shaft (14).

This disclosure relates to the technical field of shot blasting machines. One embodiment of this disclosure provides a tracked shot blasting machine with a gear ring for a transmission system, comprising: a recovery box and a housing, the housing being fixed to the recovery box, the shot blasting machine body being installed inside the top of the housing, a feeding auger being fixed in the recovery box and connected to the shot blasting machine body, a tilting processing component being disposed in the recovery box, and a discharge sorting component being disposed in the housing and the recovery box. The tilting processing component includes a feeding pipe disposed on one side of the recovery box, a sealing cover being rotatably connected to the feeding pipe via a pin, and a tilting frame that is electrically driven to rotate inside the housing, the surface of the tilting frame having a grid-like structure. This technical solution solves the technical problem in the prior art where steel balls and debris are mixed together after grinding, making it difficult to recycle the steel balls, and the grinding debris cannot be effectively collected and recycled for subsequent processing.

This utility model relates to the field of pilot-operated relay valves, specifically a pilot-operated relay valve for a control system. The utility model includes a valve body with a first through-hole. A sealing cap is provided at one end of the first through-hole. A first inlet and a second inlet are connected to one side of the first through-hole, and an outlet is connected to the side of the first through-hole away from the first inlet. A control chamber is provided at the end of the first through-hole away from the sealing cap. A piston plate is slidably connected to the control chamber, and a valve core is fixedly connected to the piston plate, extending into the first through-hole. A first locking block is provided within the first through-hole, and a second elastic element is fixedly connected to the sealing cap. A steel ball is provided on the second elastic element, and a second through-hole is provided on the first locking block. A second locking block is provided within the first through-hole, and a third through-hole is provided on the first locking block. A first conical surface is provided within the third through-hole, and a second conical surface is provided on the middle section of the valve core. The technical solution of this utility model can improve the problem of damage to Y-type gaskets after long-term use.

The utility model discloses a concrete pump truck S valve wear -resisting ring replacement subassembly, including the wear -resisting ring of the sleeve setting in the S valve body discharge pipe end part, the surface of S valve body discharge end is provided with the installation slot of wear -resisting ring sleeve setting, the inner chamber of installation slot is provided with annular groove, the surface annular array of wear -resisting ring is provided with four screw nails, the end of screw nail extends to the inner chamber of annular groove, wear -resisting ring and the end of installation slot inner chamber are provided with a plurality of limit pin, the utility model discloses the surface of installation slot is sleeved with wear -resisting ring, then adopts screwdriver to tighten screw nail, makes the steel ball on screw nail and rests in the inner wall of annular groove, wear -resisting ring can also rotate on the surface of installation slot during, after arc groove no.

The application provides a booster valve using a filter screen to assist in resetting a steel ball, comprising an electromagnetic valve assembly and a one-way valve assembly, the electromagnetic valve assembly is provided with a first radial hole, the one-way valve assembly has a first channel, a second channel and a first port, and the two are further provided with a second radial hole, the first channel can communicate the first radial hole and the first port, the second channel can communicate the second radial hole and the first port, and the first port is provided with a filter screen and a steel ball between the first port and the second channel; when the liquid flows to the first radial hole and the second radial hole, the filter screen protrudes to one side of the steel ball and pushes the steel ball to move to one side of the second channel; when the liquid flows to the first port, the filter screen protrudes to one side of the first port, and the steel ball moves to one side of the first port; by changing the position of the filter screen, the filter screen is driven to protrude when the liquid passes through the filter screen, and then the steel ball is pushed to move to one side of the second channel, so that the steel ball moves earlier than the existing structure, and the response speed of the one-way valve assembly is faster.

This utility model provides a measuring tool for detecting the runout of the outer circle of a UF outer star wheel relative to the inner arc track. It includes a base plate and a rotating structure, a clamping and fixing structure, and a measuring structure mounted on the base plate. The rotating structure includes a bearing seat and a rotating shaft. The bearing seat is fixed to the base plate and contains a bearing. The rotating shaft is located in the bearing and rotates relative to the bearing seat. The clamping and fixing structure includes an outer cylinder and a pull bolt. An inner cylinder is located at the top of the outer cylinder, and a reference ring is fitted around the top of the inner cylinder. Multiple rectangular grooves are spaced circumferentially on the top of the reference ring, and steel balls are movably placed in these grooves. The pull bolt includes a top clamping part and a bottom connecting part. The clamping part is in the shape of an inverted frustum, and its outer wall abuts against the steel ball. The connecting part connects to a drive assembly, which drives the pull bolt to move up and down. The measuring structure includes a dial indicator, which is fixed to the upper end of a vertical rod via a cantilever. The vertical rod is located on one side of the bearing seat.

This invention relates to the field of ball mill technology, specifically to a steel-rubber composite liner for a ball mill. It comprises multiple arc-shaped liner units circumferentially and evenly arranged on the inner wall of a rotating cylinder of a ball mill. Each arc-shaped liner unit includes a first arc-shaped plate fixedly disposed on the inner wall of the rotating cylinder, and a second arc-shaped plate rotatably connected to the first arc-shaped plate. A driving structure is provided between the first and second arc-shaped plates. When the arc-shaped liner unit rotates with the rotating cylinder to the lifting zone, the driving structure drives the second arc-shaped plate to deflect and tilt upwards relative to the first arc-shaped plate. The liner of this invention can automatically switch postures according to the operating conditions, forming a protrusion in the lifting zone to assist in lifting the steel balls, and retracting the protrusion in the impact zone to ensure effective impact of the steel balls on the material. This overcomes the technical contradiction of traditional fixed protruding liners being unable to simultaneously achieve both ball lifting and efficient impact.

The utility model relates to air cylinder accessory technical field, the utility model provides a kind of air cylinder quick connector, including outer sleeve, the inner side of outer sleeve is fixedly installed with limit block, the rear end of limit block is fixedly installed with spring;External joint, the inner wall of external joint is equipped with placing mouth, the inside of placing mouth is clamped with steel ball, the front end outside of placing mouth is fixedly installed with baffle ring, the rear end inner wall of placing mouth is fixedly installed with ferrule;Inner joint, the inside of external joint is clamped with inner joint, the outer wall of inner joint is equipped with slot, the rear end of slot is fixedly installed with stop block, solve the original fast plug connector when using, due to external vibration, leading to fast plug connector disconnect, cause joint place leakage, influence subsequent use, when worker uses fast plug connector in narrow space, the position of fast plug connector is easily dislocated when worker connects, leading to fast plug connector cannot be quickly aligned butt joint, cause the technical problem of joint installation slower.

The utility model discloses a kind of cleaning and drying equipment for steel ball, including tank, tank is equipped with limit pipe, limit pipe bottom end side is equipped with ball inlet, limit pipe top end side is equipped with ball outlet, limit pipe is equipped with auger, auger top end is connected with motor output shaft transmission, motor is fixed in tank top, tank top inner wall is equipped with drying pipe, drying pipe is gradually set downward in spiral shape, drying pipe top end is communicated with ball outlet, the cleaning and drying equipment for steel ball of the utility model, it is set in one tank to wash and dry, compact structure, space utilization is high, and adopt auger and limit pipe, it is rolled to realize cleaning again, steel ball can be made to roll upward and lift, cooperate with drain chamber, realize draining function, remove most of the water on the surface of steel ball, and cooperate with drying pipe, so that steel ball long-distance rolling falls dry, not easy to keep water bead, produce stain, and extend steel ball drying time, improve drying efficiency.

The present application relates to the technical fields of one-way valve assembly, and discloses a valve body feeding mechanism for one-way valve assembly processing, which comprises a vibrating disc for conveying one-way valve bodies, one end of the one-way valve body being a large-head flange end and the other end being a small-head guide end, a clamping module being installed at the outlet of the vibrating disc, the clamping module having two output ends, after adopting a pre-pose optimization structure, the valve bodies can be corrected in pose and separated in advance, effectively reducing the workload of pose adjustment on the subsequent track, avoiding a large number of unqualified valve bodies from entering the subsequent process, at the same time, through the design of separation, the batch valve bodies are dispersedly conveyed, avoiding the delay of feeding caused by congestion, ensuring that the clamping module can continuously and stably obtain qualified valve bodies without waiting for replenishment, in addition, the valve bodies in vertical pose are selected in advance, greatly reducing the falling probability on the subsequent track, reducing repeated rework, improving the feeding efficiency, and laying a stable foundation for the subsequent assembly process of steel balls and springs.

This invention discloses an energy-saving grinding equipment, belonging to the field of mineral processing equipment technology, including a ball mill cylinder, frame, drive assembly, magnetic suction plate, arc-shaped guide plate, fixed plate, U-shaped sleeve, elastic telescopic plate assembly, and electric telescopic rod. The ball mill cylinder is rotatably supported on the frame, and the drive assembly drives its rotation. Magnetic suction plates are fixedly installed at equal intervals on the inner surface of the ball mill cylinder, and an arc-shaped guide plate is provided at the top, with equally spaced stop bars at both ends of the guide plate. The fixed plate is fixedly connected to the frame, and the U-shaped sleeve inside the cylinder is connected to the fixed plate. The stop bar at one end of the guide plate is inserted into the U-shaped sleeve and limited by a shaft and sliding joint. The fixed plate is equipped with an elastic telescopic plate assembly, and one end of the arc-shaped guide plate extends through the fixed plate to the outside and passes over the top of the telescopic plate assembly. An L-shaped rod is installed on the lower outer surface of the arc-shaped guide plate, and an electric telescopic rod is installed on the fixed plate, with a pressure rod installed at its movable end. This equipment saves energy by raising the falling height of the steel balls with the magnetic suction plate, and the electric telescopic rod drives the arc-shaped guide plate to facilitate the replacement of steel balls, improving grinding efficiency and operational convenience.

This application provides a steel ball pressing device. The steel ball pressing device includes a rod material rotation and orientation device, a rod material positioning and detection device, a spring dispensing device, a steel ball dispensing device, and a conveying device. The rod material rotation and orientation device includes a first fixture and a rotation and orientation assembly, which is used to rotate and orient the rod material. The rod material positioning and detection device includes a positioning fixture and a lifting and positioning assembly, which includes a lifting drive and a positioning pin, the bottom end of which has a conical tip. The spring dispensing device includes a rod material fixture and a spring feeding assembly, which is used for automatic spring dispensing. The steel ball dispensing device includes a support fixture and a steel ball feeding assembly, which is used for automatic steel ball dispensing. The steel ball pressing device includes a pressing fixture and a pressing machine. The conveying device dispensing and moving the rod material. This application can solve the problem of low production efficiency in steel ball pressing in the prior art.

A kind of high-precision four-column sensor, it is related to weighing sensor technical field, a kind of high-precision four-column sensor, from top to bottom include pressure head, steel ball, upper weighing seat, elastomer, lower weighing seat and bottom plate in order, steel ball is located between pressure head and upper weighing seat, and the contact surface of pressure head and upper weighing seat with steel ball is concave cambered surface, elastomer is located between upper weighing seat and lower weighing seat, elastomer is integrally machined with upper weighing seat and lower weighing seat, elastomer quantity is four and is evenly distributed in 2*2 matrix, strain gauge is pasted on elastomer, recess is provided on the top surface of lower weighing seat, recess is located between four elastomers, digital module is provided in recess, and signal line is provided on the side of lower weighing seat.The sensor of the utility model is integrally machined with the whole structure, without any assembly gap, precision is guaranteed by processing, the whole structure has no stress weak point, and the rigidity significantly improves sensor service life.

The utility model relates to the technical field of anti-abrasion structure, and disclose a kind of ball mill waveform lining plate.The kind of ball mill waveform lining plate includes: basic structural component, the upper end of the basic structural component is equipped with lining plate side end component, the upper end of the lining plate side end component is equipped with second arc surface, the right side of the second arc surface is equipped with third arc surface, the upper end of the third arc surface is equipped with the upper end left side of mill ball hole and is equipped with lining plate structure component, the upper end of the lining plate structure component is equipped with first arc surface A, the right side of the first arc surface A is equipped with first arc surface B, the upper end of the first arc surface B is equipped with hole, possess effectively prevent traditional waveform lining plate due to its ball ability is poor, need to add a large number of steel ball to reach operating effect, leading to equipment weight increase, operating current is big, cannot satisfy these problems of the requirement of energy saving and emission reduction.

The utility model relates to a vibrating screen machine, especially to an aggregate vibrating screen machine. The utility model provides an aggregate vibrating screen machine, which comprises a base, damping springs, a vibrating screen motor, a vibrating screen protection plate, a conveying cylinder and a mounting plate. The base is symmetrically provided with the damping springs on the upper part of both sides, the base is provided with the vibrating screen protection plate on the upper part, the upper end of the damping spring is fixedly connected to the vibrating screen protection plate, the vibrating screen protection plate is provided with the vibrating screen motor on the lower part, the conveying cylinder is movably arranged on the front part of the vibrating screen protection plate, and the mounting plate is fixedly connected to the upper rear end of the vibrating screen protection plate. The utility model drives the impact baffle to rotate by the rolling of the steel ball, the impact baffle drives the bevel gear assembly to rotate, the bevel gear assembly drives the bidirectional screw to rotate, and the scraper is scraped back and forth on the lower part of the vibrating screen protection plate, so that the effect of scraping and cleaning the aggregate adhered to the inside can be achieved.

This invention relates to an escape lock device for sliding doors, comprising a lock body assembly and a lock shell, which are snap-fitted together. The lock body assembly includes a micro switch, a micro switch trigger button, a micro switch triggering device, a transmission rod, a lock cover, a steel ball, a steel ball base, an escape triggering device, a triggering device limiter, and a lock cylinder. The micro switch has a micro switch trigger button, which in turn has a micro switch triggering device. The micro switch triggering device contacts the steel ball via the transmission rod. The escape triggering device is located below the steel ball, with its lower end positioned below the triggering device limiter. The triggering device limiter is rotatably mounted on one side of the lock cylinder and contacts the lock cylinder. A connecting member passes through the cavity between the lock cover and the steel ball. This invention allows for escape by loosening the chain or by triggering the internal mechanism with a lever, and is highly versatile.

This application discloses a steel ball hardness testing device, which includes a testing box. An L-shaped mounting bracket is fixedly connected to the upper surface of the testing box. A hardness testing component is fixedly connected to the top of the inner wall of the L-shaped mounting bracket. A support plate is fixedly disposed inside the testing box. Multiple clamping plates are slidably connected to the support plate. A drive component is movably disposed on the testing box. A transmission component is movably connected to one end of the drive component. Multiple adjustment components are circumferentially connected to the top of the transmission component. The outer wall of each adjustment component is movably connected to the inner wall of each clamping plate. In this solution, the operation of multiple adjustment components can be adjusted simultaneously by the cooperation of the drive component and the transmission component. The operation of multiple adjustment components can synchronously adjust the movement of multiple clamping plates, thereby clamping and limiting steel balls of different sizes. This allows the hardness testing component to be aligned with the center of steel balls of different sizes, improving the accuracy of steel ball hardness testing.

This invention relates to a piston ring-cylinder liner friction testing system, comprising a piston ring, a cylinder liner, a piston ring-cylinder liner fixing assembly, a piston ring-cylinder liner heating assembly, a lubricating oil supply assembly, and a power assembly. The piston ring-cylinder liner fixing assembly includes a housing, an elastic thrust rod, steel balls, a tension / compression sensor, a bracket, and a piston ring clamp. The bracket is located on the single-cylinder engine of the power assembly, and the housing is located on the bracket. An annular oil groove is provided on the inner wall of the bottom of the housing, and an oil outlet communicating with the annular oil groove is provided at the bottom of the housing. The cylinder liner is located inside the housing, with its sidewall facing the annular oil groove. The lubricating oil supply assembly includes an oil supply passage and an oil supply cap. The cap is located inside the cylinder liner, with its perimeter edges close to the inner wall of the cylinder liner. The cap has an oil supply port, providing circumferential oil supply to the cylinder liner. The testing system is located outside the single-cylinder engine, eliminating the need to modify the internal structure of the engine, thus saving costs and simplifying experimental operation.

The utility model relates to mechanical engineering technical field discloses a kind of transmission screw of double thread structure, including stud, the outside of stud is fixedly connected with two inner rings, the outside of inner ring is fixedly connected with thread tooth, the surface of inner ring is equipped with lubricating groove, the outside of thread tooth is movably connected with multiple ball bearings, multiple ball bearings are evenly distributed in the outer surface of thread tooth in equidistant interval mode, and extend along the helical path of thread tooth, ball bearing is steel ball bearing, and surface is polished, the radial dimension of inner ring is less than thread tooth, and the corresponding ladder groove of adaptation bolt is equipped with, axial limit is formed when the two are clamped, and the inner wall of lubricating groove is equipped with flow guide line route.In the utility model, rely on the bidirectional ladder type clamping structure of double inner ring and bolt double internal thread, can form double axial limit effect, greatly enhance the connection firmness of screw and bolt, effectively avoid the front and rear sway or deviation caused by vibration, impact during transmission.

The utility model provides a kind of conformal half mould rubber forming device, belong to aviation technical field, the device in adjacent two sides operating wallboard and another adjacent two sides fixed wallboard constitute the 4 side surface structures of device, adjacent wallboard is fixedly connected;One operating wallboard is compacted to the fixed wallboard of opposite square column, and another operating wallboard is compacted to the fixed wallboard of opposite square column;Multiple square columns are vertically stacked in device internal space, fill the horizontal direction of device internal space;Forming male die is located just below the device;Upper cover plate is fixed on the top of device;Jamb is located on upper cover plate, T-shaped slot is provided in the middle of upper cover plate, steel ball hole for putting in steel ball is provided in the center of upper cover plate, and T-shaped slider is fixed in the lower end of jamb.The utility model uses square column to replicate modular design, so that the bottom of device can form similar shape with the upper surface of male die, when rubber forming subsequently, rubber can be evenly attached to sheet metal parts, realize high-precision flexible forming.

This utility model discloses a steel ball valve core type pressure regulating assembly, including a lower housing, an upper housing, and a valve seat, as well as a high-pressure safety valve assembly, a low-pressure safety valve assembly, an anti-negative pressure safety valve assembly, a high-pressure safety valve spring, and a low-pressure safety valve spring mounted on the valve seat. The lower housing, upper housing, and valve seat are connected by screws. The lower housing has ports C and D as inlets, and the upper housing has ports A and B as outlets. The low-pressure safety valve assembly integrates a steel ball, valve seat 1, ball seat, pilot valve assembly, and pilot valve spring inside its cavity. When the aircraft tilts, it rotates the assembly, causing the steel ball to roll within the ball seat, controlling the opening and closing of the pilot valve assembly, thus regulating the opening pressure of the low-pressure safety valve. The assembly prevents oil leakage during aircraft nose-down, side-tilt, or nose-up flight. It features a compact structure, high integration, small size, and light weight.

The application discloses a bearing steel ball grinding tool, a parameter design method and a use method, and mainly relates to the bearing machining technical field. The bearing steel ball grinding tool comprises a fixed grinding disc and a movable grinding disc arranged at the bottom of the fixed grinding disc. The top of the movable grinding disc and the bottom of the fixed grinding disc are both provided with annular V-shaped grooves. The angle of the tip of the V-shaped groove is 90 degrees. Circular arc grooves are arranged on the two inner walls of the V-shaped groove. The center point of the circular arc groove is a pure rolling point of the steel ball. The bisector of the angle formed by the connecting line of the center points of the two circular arc grooves and the center of the steel ball coincides with the center line of the V-shaped groove. The application can effectively improve the coverage of the grinding tool grinding track network on the surface of the steel ball, effectively reduce the spherical deviation and the spherical diameter variation of the steel ball after grinding, and improve the final grinding precision.

This utility model discloses a device for removing irregularly shaped balls in the reprocessing of miniature steel ball blanks, belonging to the field of miniature steel ball processing technology. The device includes a fixed support, an outer shell, and a collection chamber. The collection chamber is installed at the top of the fixed support. There are three sets of fixed supports, and the outer shell is installed between the three sets of fixed supports. A screening mechanism is installed inside the outer shell. The screening mechanism screens irregularly shaped balls in the miniature steel balls whose weight is much lower than the predetermined value and whose volume is missing over a large area. The screening mechanism includes a spiral conveyor plate, a raised guard plate, a main rod, and a baffle plate. In this utility model, through the setting of the screening mechanism, under the structure of the spiral conveyor plate and the action of centrifugal force, irregularly shaped balls in the miniature steel balls whose weight is much smaller than the predetermined size and whose volume is missing by more than 50% can be quickly screened. There is no need for subsequent screening machines to screen them one by one, saving the screening time of subsequent equipment. In addition, with the unloading mechanism, the miniature steel balls can be stably allowed to enter the collection chamber.