37 results about "Lost-foam casting" patented technology

This utility model relates to the field of lost foam casting technology and discloses a lost foam casting device for automotive drive axle housings. It includes a base, a frame mounted above the base, a casting box fixedly connected to the inner wall of the frame, a sand outlet on the lower surface of the casting box, a recovery assembly below the sand outlet, and a filter assembly outside the base. The recovery assembly includes a baffle, a collection box, and a sieve plate. A first hinge seat is fixedly connected to the outer wall of the frame, and a second hinge seat is fixedly connected to the outer wall of the baffle. A hydraulic rod is rotatably connected to the inner wall of the first hinge seat, and the output end of the hydraulic rod is rotatably connected to the inner wall of the second hinge seat. In this utility model, after casting is completed, the baffle is opened and closed automatically via a hydraulic drive device, achieving automatic opening and closing of the sand outlet. The molding sand falls into the collection box through the sieve plate for initial screening. Coarse sand is directly recycled, while fine sand is separated through the sieve plate, improving the efficiency of old sand recycling and reducing labor intensity.

This invention discloses a lost foam casting mold for gearbox housings, relating to the field of intelligent casting technology. It includes a lower mold and an upper mold. An ejector assembly is installed inside the lower mold, comprising a telescopic cylinder mounted inside the lower mold. A movable seat is mounted on the telescopic cylinder, and a top seat is connected to the movable seat via a conveying pipe. The top seat is located inside a recess in the housing, and its top horizontal plane is flush with the bottom horizontal plane of the bearing seat hole in the housing recess. The conveying pipe is connected to an external air pump via a first pipe, and a through hole is provided on the outer side of the top seat. In this lost foam casting mold for gearbox housings, when the top seat moves upward, it slowly lifts the housing upward, achieving initial loosening and separation of the housing from the bottom of the housing recess. Gas flows along the gap between the housing and the housing recess, assisting in loosening and preventing scratches on the housing surface during demolding, thus ensuring the appearance quality of the housing.

The application discloses a kind of lost foam casting tail gas electric heating combustion processing device, air inlet pipeline, with the tail gas discharge port of lost foam casting production line is sealed connection by flange, for the treatment gas generated in casting process is transported to pretreatment module;While pipeline inner wall is equipped with anticorrosive coating and guide vane;Pretreatment module is connected with the outlet end of air inlet pipeline and the air inlet end of direct combustion module, for dust removal to treatment gas;Heat recovery module and the outlet end of direct combustion module and the air inlet end of deep treatment module are detachably connected by flange, for recovering high-temperature tail gas waste heat discharged by direct combustion module and realizing energy recycling.The application has the beneficial effects of ensuring gas emission, reducing heat exchange efficiency decay, reducing maintenance energy consumption, reducing dust deposition and pressure loss, prolonging equipment service life, low manufacturing cost, not easy to damage and simple maintenance operation.

The utility model discloses a kind of lost foam hollow shell precision casting model assembly structure, it is related to lost foam casting technical field.It includes base and the mounting bracket oppositely arranged on the left and right sides of upper end of base;Left mounting bracket is fixed with base;Right mounting bracket is slid with base in left and right direction by sliding member;Mounting bracket is vertically arranged;At least two rows of mounting holes are distributed from top to bottom on mounting bracket;Adjusting limiting assembly is arranged in mounting hole;The adjusting limiting assembly includes the support disc of rotation sleeve in mounting hole;Handle is fixed on support disc;Mounting bracket is fixed with the connecting frame corresponding with support disc;First stop bolt for positioning support disc is threadedly connected on connecting frame;One end close to each other on left and right sides support disc is connected with base.

The utility model discloses a cooling device for lost foam casting, including sand box, the rear of sand box is provided with helical flow guide type cooling mechanism, and the below of sand box is provided with level material mechanism, the inside of material conveying pipeline is equipped with material conveying helical blade, and the middle part of material conveying helical blade is installed with helical axle, and the helical axle of material conveying helical blade middle part is connected with motor drive, and the hopper is fixed in sand box bottom end and is communicated to material conveying pipeline bottom end through recovery pipeline, and the electric control valve is fixedly installed in recovery pipeline, and the heat dissipation aluminum sheet penetrates sand box inner and outer wall, and the level material mechanism includes first vibrating motor, second vibrating motor, spring body and support seat, and first vibrating motor and second vibrating motor are symmetrically installed in sand box bottom and are connected with support seat through spring body, and the cooling device for lost foam casting is through the synergic effect of mechanical circulation and vibration dispersion, and the two big technical problems of casting stress deformation and sand layer bonding caused by sandstone uneven cooling are solved simultaneously.

This invention discloses a method for preparing high-manganese steel plates by hot rolling after surface infiltration of TiC using a lost foam casting process. This invention combines lost foam casting, TiC infiltration, hot rolling, and water quenching. TiC particles are used as the reinforcing phase, and a coating is prepared using a special silica sol refractory binder and sodium-based bentonite suspending agent. Key processes include drying the TiC coating layer, re-drying after applying the lost foam refractory coating, negative pressure casting, hot rolling, and water quenching. Nickel and copper alloying elements are introduced into the matrix to achieve a good match between the infiltrated layer and the matrix. Through the synergistic effect of the components and processes, this invention enables the plate to possess both high surface wear resistance and matrix toughness. The infiltrated layer has a stable bond, and the process is highly controllable, thus improving the performance and service life of high-manganese steel plates under wear-resistant conditions.

The utility model relates to the field of foundry equipment, concretely relates to a pouring forming device beneficial to lost foam casting, including sand mould case, pouring unit and exhaust slag collection subassembly, exhaust slag collection subassembly is equipped with the gas guide slag collection pipe with slag collection cavity and exhaust valve, the valve core ball of elastic top pressure is equipped with exhaust valve, and several groups of exhaust slag collection subassembly are divided in the periphery of pouring unit. The utility model utilizes the gas guide slag collection pipe to gather the gas and dross produced in the pouring of the lost foam model in the sand mould case, and gradually opens up to exhaust through the valve core ball of elastic top pressure in the exhaust valve under the action of airflow, makes the gas in the sand mould case discharge after the buffer of exhaust valve, and utilizes the slag collection cavity to collect the dross, and further is favorable to reducing the efficiency influence and safety risk brought by pouring resistance or back spray caused by the gas produced in the lost foam casting, is favorable to reducing the casting defect of the gas hole or slag inclusion produced in the pouring, thereby can improve the casting efficiency and casting quality.

The utility model relates to the field of lost foam casting, disclose a kind of can quickly separate lost foam casting, including bottom box, the outer wall left end of bottom box is fixedly connected with motor, the drive end of motor is penetrated the inner wall of bottom box and is fixedly connected with rotating column, the outer wall of rotating column is fixedly connected with outer disc, the outer wall of outer disc is fixedly connected with bottom bar, the outer wall of bottom bar is provided with vibration subassembly, and bottom bar is connected with top plate by vibration subassembly, the inner wall top end of bottom box is fixedly connected with sand box, the front end left and right sides of sand box are fixedly connected with hinge, the top end of hinge is rotatably connected with sand box, and the top end of sand box is used to close sand box. In the utility model, high-frequency vibration is applied to the box by vibration subassembly, the flowability and compactness of the sand are improved, the generation of filling dead angle and loose area is reduced, thereby effectively avoiding the casting surface defects caused by insufficient sand support.

The utility model relates to a box carrying trolley technical field especially relates to a box carrying trolley universal wheel for lost foam casting, including box carrying trolley, mounting sleeve, sliding seat and universal wheel, install a plurality of mounting sleeves on box carrying trolley, slidingly set up sliding seat on mounting sleeve, be provided with universal wheel between two sliding seats of being similar, still include fixed base, guide rod and sliding block, four fixed bases are fixedly connected on box carrying trolley, two guide rods are fixedly connected on fixed base, slidingly set up sliding block on guide rod. Through the extrusion fixed base of box carrying trolley and move down, and fixed base extrusion connecting plate rotates, so that connecting plate drives sliding block along guide rod and slides, and extrudes first elastic part, to this will vibration energy be converted into elastic deformation energy and be absorbed, thereby reduce the vibration that transmits to the inside of box, effectively protect the safety of goods.

The application discloses a kind of lost foam automatic casting process data monitoring systems, it is related to casting process monitoring technology.The system includes information perception module, data storage module, three-dimensional tracking simulation module, deviation analysis judging module, abnormal index diagnosis module, defect risk prediction module and optimization correction control module.System acquires temperature field and process parameters of casting process in real time through multi-source sensor, utilizes three-dimensional simulation to track metal liquid theory flow front, and combines surface temperature field to estimate actual position, realizes process state real-time judgment by calculating the spatial deviation of two.When abnormal occurs, the system adopts Bayesian model to predict the occurrence probability of shrinkage, porosity and other defects, and calculates comprehensive risk index, and finally automatically adjusts key process parameters according to risk level.The application realizes the visual monitoring of lost foam casting process, abnormal early warning and self-adaptive closed-loop control, effectively improves the consistency and stability of casting quality.

This utility model discloses a lost foam casting device for pipe fittings, including a lost foam outer box; a U-shaped frame is detachably installed on the lost foam outer box, and a positioning support structure is connected to the U-shaped frame. T-shaped strips are installed on both sides of the lost foam outer box, and an installation structure connects the two T-shaped strips to the U-shaped frame. In this utility model, a limiting sleeve is fitted onto the T-shaped strip to support the U-shaped frame. Pushing the limiting sleeve can adjust the position of the U-shaped frame, and pushing the slide can adjust the position of the casting funnel to ensure that the casting funnel is aligned with the pouring gate. Then, rotating the adjusting screw can control the casting funnel to descend to the pouring gate for casting. The U-shaped frame and the limiting sleeve provide support for the installation of the casting funnel, preventing accidental contact with the casting funnel during casting and causing it to tilt or shift, thus ensuring the normal operation of the lost foam casting process.

The application relates to the technical field of lost foam casting, and provides nodular cast iron lost foam casting paint and a preparation method thereof. The lost foam casting paint comprises quartz powder and a first modified component with a mass ratio of (85-95):(5-10), and a mixture mainly formed by mixing coke powder and a second modified component with a mass ratio of (2-8):(2-4) through ball milling; the first modified component mainly comprises calcined clay and spodumene powder with a mass ratio greater than 1; and the second modified component mainly comprises iron oxide powder and borax with a mass ratio of (2-4):1. The application solves the problems of high-temperature expansion and cracking of the quartz paint and migration of harmful elements of the carbonaceous material by generating a low-expansion stable phase on the surface of the quartz aggregate particle through innovative material composite design and further in-situ reactive encapsulation of the introduced carbonaceous material, so that a new type of paint with extremely low cost but reliable performance and metallurgical safety is obtained.

The application discloses a paint spraying device for lost foam casting and belongs to the technical field of lost foam, which comprises a bottom plate, a storage box and a filter box are fixedly installed at the top end of the bottom plate, a filter plate is fixedly installed in the filter box, an automatic cleaning mechanism is arranged in the filter plate, the automatic cleaning mechanism comprises an electric push rod, the electric push rod is fixedly installed on the inner wall of the filter box and located above the bottom plate, a connecting block is fixedly installed at the telescopic end of the electric push rod, a push plate is fixedly installed at the bottom of the connecting block, the push plate is slidably connected with the top surface of the filter plate, a top plate is fixedly installed at the top end of the connecting block, a through groove is formed in one side of the bottom plate, and a collecting box is fixedly installed at the side of the bottom plate; the automatic cleaning mechanism can push the impurities filtered out by the filter plate into the collecting box for cleaning without stopping the device, and the spraying operation of the spraying mechanism can be continuously performed.

This invention relates to the field of casting molding technology and discloses a foam model gasification control process in lost foam casting. The process includes: collecting real-time pressure and ambient negative pressure along the suction path within the sand box; determining the sand layer permeability resistance coefficient based on the pressure difference and filling distance; determining the set pressure of the target suction path based on the model's characteristic length; controlling the output pulse of the target suction path to enhance negative pressure as the filling front approaches; and adjusting the opening of the gate valve in the casting pouring channel to reduce the rising speed of the molten metal when the permeability resistance coefficient exceeds a threshold. This invention achieves multi-loop spatial coordinated adjustment of the negative pressure amplitude and filling speed, ensuring that the negative pressure flow resistance field matches the gasification release distribution, eliminating localized air gap blockage, enabling directional and rapid gas discharge, maintaining the stability of the dry sand mold wall, and preventing air entrapment and box collapse in the casting.

A lost foam casting cavity polishing device, relating to the field of lost foam casting technology, includes a base, a vertical mounting plate, a polishing device, and a positioning device. The base has a structure with a vertical mounting plate at the top. The polishing device is mounted on the mounting plate and used to polish the cavities of the lost foam casting mold for bucket teeth. The positioning device is mounted on the base and used to position the bucket tooth mold. The polishing device includes a polishing rod that slides vertically with the mounting plate, a polishing head mounted at the bottom of the polishing rod, a cam mechanism located at the top of the polishing rod, and a motor mounted on the side of the mounting plate opposite to the cam mechanism. The cam mechanism includes a cam, a limiting block, and a tension spring. The cam rotation shaft is driven and connected to the motor, and the tension spring ensures that the top end of the polishing rod is always in contact with the cam. This invention, through the structural design of the base, polishing device, positioning device, and mounting plate, achieves an efficient solution for polishing the cavities of the bucket tooth mold, possessing stability and accuracy, and meeting diverse polishing needs.

This utility model provides a rapid assembly device for lost foam casting molds, relating to the field of lost foam casting technology. It includes a casting chamber, with a base plate fixedly connected inside. An installation groove is fixedly connected to the outer surface of the base plate, and a placement plate is provided on the outer surface of the installation groove. A clamping assembly is provided inside the placement plate, including a handle. A bidirectional threaded rod is fixedly connected to the outer surface of the handle, and a movable plate is threadedly connected to the outer surface of the bidirectional threaded rod. A fixing rod is provided at the bottom of the placement plate. This utility model, by providing the installation groove, allows the fixing rod to be placed arbitrarily within the groove, thereby fixing the fixing rod through the compression of the fastening assembly, thus fixing the position of the placement plate. The clamping assembly is used to hold the bottom of the lost foam mold stably. Due to the bidirectional thread, the movable plates can move in opposite directions simultaneously.

The utility model relates to a kind of lost foam vibration molding device, including base, vibration table, vibration subassembly, sand box fixed subassembly and damping component;Vibration table is set in the upper end of base, and vibration subassembly is equipped in the four around of vibration table, and vibration subassembly includes four vibration motors, and vibration motor is connected fixed between vibration table by stepped rubber column, and the large diameter end of stepped rubber column is pasted with vibration table bottom, and small diameter end is embedded in the recess in the top of vibration motor;The upper end surface of vibration table is equipped with sand box fixed subassembly, and sand box fixed subassembly is equipped with four groups and symmetrically set in the four corners of vibration table, and damping component includes multiple air bags, and air bag is evenly installed between base and vibration table.The utility model realizes vibration amplitude flexible adjustment, multidirectional vibration output and sand box stable clamping by optimizing vibration subassembly, damping component and sand box fixed structure, and improves the modeling quality of lost foam casting.

This utility model provides a device for surface oxidation treatment of lost foam casting molds, relating to the technical field of surface oxidation treatment devices for lost foam casting molds. It includes a laser rust removal machine, with a moving mechanism on one side. The moving mechanism includes a fixed frame, a sliding groove on the fixed frame, a sliding rod on the inner side of the fixed frame, and a T-shaped limiting groove inside the sliding rod. Fixed rods are fitted inside both the sliding groove and the T-shaped limiting groove. This utility model, by setting up a moving mechanism that can move in conjunction with a rust removal gun, allows the operator to easily control the position of the rust removal gun. This ensures effective rust removal of the lost foam casting mold while preventing arm pain for the operator. The sliding groove and T-shaped limiting groove, both allowing rollers to slide within them, enable easier sliding adjustment of the sliding rod and the embedded block.

The utility model discloses a kind of quick bonding cold glue devices of lost foam casting, including workbench, the upper portion of the workbench is equipped with support frame, the middle portion of the support frame is slidably installed with connecting block, the side surface of the connecting block is slidably installed with fixed block, the middle portion of the fixed block is slidably installed with glue head, the both sides of the fixed block are symmetrically installed with two groups of the positioning sensor, the upper portion of the support frame is equipped with glue storage tank, the side surface of the glue storage tank is equipped with metering pump, the output end of the metering pump is equipped with rubber tube, the output end of the rubber tube is connected to the input end of glue head, positioning sensor will be positioned to the required glue position, with electric member moves glue head, metering pump will be drawn into glue inside glue head and be glued, while the amount of extracted glue is measured, glue head is glued by electric member, reduce artificial error, increase the production efficiency of product while improving product quality.

The present application relates to the field of lost foam casting and adaptive control technology, and particularly relates to a kind of lost foam shakeout process vibration parameter adaptive control method, the method comprises: determining the area collapse characteristics of each monitoring area, and calculating the area collapse cumulative value of each monitoring area according to area collapse characteristics;Determine the area variation coefficient, determine whether the shakeout working condition of each monitoring area is area progress consistent;Determine the shakeout working condition;Based on the shakeout working condition, determine the compensation gain strategy to generate the correction amount set of current vibration parameter;According to the correction amount set, determine the corrected vibration parameter set;Adjust the preset area variation threshold value.The present application effectively solves the technical problems of uneven shakeout and dead angle residue in the prior art caused by relying on fixed vibration parameters, not setting multi-area collapse monitoring means and lacking shakeout effect closed-loop feedback mechanism through intelligent adaptive control of the shakeout process of complex structure castings.

The utility model discloses a filling sand vibration device for lost foam casting belongs to lost foam casting technical field, including sand storage jar, sand storage jar upper end one side is provided with the feed port, and sand storage jar both ends downside is provided with the frame, and sand storage jar lower extreme is provided with the discharge gate, and the discharge gate lower extreme is provided with the spiral conveying mechanism, and the spiral conveying mechanism lower extreme one side is provided with the discharge hose, and sand storage jar downside with the corresponding position of discharge hose is provided with the vibration seat, and the vibration seat upper end is provided with the sand box, and the vibration seat upper end rear side is provided with the vibration motor, the utility model discloses setting stirring subassembly, and the motor drives bevel gear no.

The application discloses a sand adding device and method for lost foam casting, and belongs to the technical field of casting processing. The sand adding device for lost foam casting comprises a hopper for storing molding sand, an upper sieve plate arranged at the bottom opening of the hopper and fixedly connected with the hopper, and a lower sieve plate arranged at the bottom of the upper sieve plate and capable of moving relative to the upper sieve plate in the plane where the lower sieve plate is located. When the first sieve holes on the upper sieve plate and the second sieve holes on the lower sieve plate are overlapped, the molding sand in the hopper can be released. When the lower sieve plate is moved along the direction X in FIG. 1 by a longitudinal driving unit, the number of the first sieve holes and the second sieve holes that are overlapped can be adjusted. Subsequently, when the lower sieve plate is moved along the direction Y in FIG. 1 by a transverse driving unit to align the first sieve holes and the second sieve holes, the range of sand dropping can be adjusted, thereby being beneficial to adapting to sand boxes of different sizes.

This application relates to the field of lost foam casting technology and discloses a stepped casting structure for lost foam casting, including a base plate. The upper surface of the base plate has multiple equidistantly arranged first slots. Above the base plate are multiple overlapping plates, each with a second slot on its upper surface. A plug plate is fixedly connected to the bottom surface of each overlapping plate. This stepped casting structure for lost foam casting, through the linkage adjustment of the moving block and the drive assembly, enables symmetrical movement of the moving plate, thereby adapting to the clamping requirements of models of different sizes. Simultaneously, the threaded engagement between the bidirectional lead screw and the moving plate makes the adjustment of the clamping distance more linear and controllable. The worm gear and worm wheel transmission structure enhances operational stability, and their transmission has self-locking characteristics, preventing reverse movement caused by casting impact force, effectively solving the problem of loose fixing caused by the non-adjustable size of traditional clamping plates.

This utility model relates to the field of lost foam casting technology for impellers, and discloses a lost foam casting of a ring pump impeller blade, including a disc, a notch in the middle of the disc, a column in the upper middle of the disc, an open ring fixedly connected to the lower middle of the column, the lower end of the open ring being embedded in the notch, a first mounting groove on the outside of the column, a second mounting groove on the upper side of the disc, and a blade body on the upper side of the disc outside the column, the lower end of the blade body being embedded in the second mounting groove. In this utility model, the assembly of the disc, column, and blade body facilitates storage, avoiding problems such as large volume, inconvenience in storage, and deformation during storage, thus preventing any impact on the casting precision of the ring pump impeller blade. The reinforcing strip increases the strength of the blade body, thereby preventing deformation and improving the casting precision of the ring pump impeller blade.

This invention relates to the field of lost foam casting technology and provides a method for solving the porosity problem in gray iron casting. A necked ceramic tube is added to the lower end of the sprue, utilizing its "liquid seal-stabilized flow" characteristics to keep the pouring cup continuously filled. When molten iron flows in, the flow velocity at the neck increases, reducing the chance of gas entrapment and maintaining a stable molten iron level in the pouring cup, preventing air from entering the mold cavity. Venting is enhanced by adding a dedicated venting pipe to the bottom of the mold: a foam sprue is connected to the bottom slag discharge channel, covered with a paper ceramic tube, and then a steel pipe is fitted over the paper ceramic tube, with sand tightly packed between the paper ceramic tube and the steel pipe. Isolated bosses are connected to the main mold using foam material, enabling continuous molten iron filling. Through the synergistic effect of these three elements, this invention effectively controls porosity defects in gray cast iron parts, significantly reducing customer complaints and demonstrating significant engineering application value.

The utility model provides an evanescent mode large flat plate type casting anti-deformation tool and a sand box for a casting mold, and the evanescent mode large flat plate type casting anti-deformation tool is arranged in the sand box and comprises two supporting pipes and a plurality of connecting pipes; the two supporting pipes are arranged in the sand box in parallel, and the supporting pipes are vertically arranged; the multiple connecting pipes are arranged at intervals in the vertical direction, the two ends of each connecting pipe are attached to and fixedly connected with the peripheral faces of the two supporting pipes respectively, the pipe body positioning faces of the multiple connecting pipes abut against the same side of a mold, and the multiple connecting pipes are matched to form a main body positioning face. According to the anti-deformation tool for the evanescent mode large flat plate type casting, the supporting pipes are arranged in the sand box, the connecting pipes are installed on the same side faces of the two supporting pipes, the multiple connecting pipes jointly form a main body positioning face, the main body positioning face is matched with filled dry sand to horizontally position a casting mold, and the casting quality of a cast iron flat plate is guaranteed.

This invention relates to the field of casting equipment technology, specifically disclosing a pump and valve casting demolding device, including a recovery box. A crossbeam is fixedly installed on the recovery box, with the crossbeam near the center. A bearing structure is fixedly installed on the crossbeam, and a limiting structure is fixedly installed on the bearing structure. A loading unit is detachably installed on the bearing structure, and the loading unit is fixed by the limiting structure. A detachment structure is detachably installed on the limiting structure. Through the sealing and fitting design of the loading unit and the precise pushing design of the detachment structure, after the bottom of the box separates from the outer casing, the molding sand automatically scatters and is recovered, and the casting is smoothly moved out by the directional pushing of the pusher plate, completely solving the problem of difficult casting removal under the lost foam casting process.

This utility model relates to a mold for preventing deformation of rectangular castings, belonging to the technical field of rectangular casting molds. It includes an installation platform, with a limiting frame fixedly installed on the top of the platform. A wooden mold is placed inside the limiting frame, and a lost foam casting is placed inside the wooden mold. A casting pipe is placed inside the wooden mold, and an anti-deformation component is installed inside the wooden mold. The anti-deformation component includes a control screw rotatably mounted on the inner wall of the wooden mold. Two inner pressure plates are threadedly connected to the surface of the control screw, and two outer pressure plates are threadedly connected to the surface of the control screw. This mold for preventing deformation of rectangular castings, by setting the anti-deformation component inside the wooden mold, places the lost foam casting between the inner and outer pressure plates. By rotating the control screw, the inner and outer pressure plates move synchronously, compacting the dry sand and increasing its density, thus preventing deformation of the rectangular casting.

The utility model discloses a lost foam stripping device relates to stripping device technical field, and this device includes the base, is provided with the bottom plate on the base top, is fixedly connected through a plurality of springs between the bottom plate and base, is provided with the frame on the bottom plate, is provided with the movable slot on the bottom plate surface, is provided with the rotating mechanism in the movable slot, is provided with the symmetrical sliding mechanism in the movable slot and the both sides of frame, is provided with the limiting mechanism in the sliding mechanism top and the both sides of frame, is provided with the vibrating mechanism on the base top and the frame top, and the rotating mechanism can drive the sliding mechanism to carry out the transverse synchronous movement to make the limiting mechanism open and close, when closing, the lost foam casting sand box on the frame top is positioned and fixed to make the lost foam casting sand box more stable, and the stripping is convenient, and the vibrating mechanism can vibrate the lost foam casting sand box, and make the casting of its inside from the lost foam casting sand box and shake, improve the stripping efficiency.

The application discloses a real shape casting method for regulating stress distribution of machine tool castings, and belongs to the technical field of designing and casting composite materials. In view of the problems of uneven stress distribution, easy production of metallurgical defects such as shrinkage cavity, shrinkage porosity and deformation of large machine tool castings in the solidification process, the application adopts a composite scheme of 'pouring system structure optimization + micro-alloying precise regulation': a multi-independent long runner, a ladder type inner runner and a combined structure of riser-cold iron are designed to realize balanced solidification; Cu0.50-0.60% and Sn0.03-0.04% are added to the base component of QT600-3 for micro-alloying to refine pearlite and improve the strength of the base. The volume of shrinkage porosity of the casting is reduced to 423 cm3, the stress of the side wall is controlled below 50 MPa, the proportion of pearlite reaches 90%, the tensile strength reaches 648 MPa, the elongation reaches 5%, the flatness of the guide rail meets the design standard, and the finished product rate and the use performance of the casting are significantly improved.