81 results about "Gauge fixing" patented technology

In one disclosed embodiment, a bicycle saddle fit system comprises an impression pad of sufficient size to span the sit bones of an adult human, and a measurement gauge fixed to and extending along the impression pad. The measurement gauge is usable to measure the distance between sit-bone impressions made in the impression pad by a person previously seated on the impression pad. In another disclosed embodiment, a method of fitting a bicycle saddle to a human rider comprises measuring a sit-bone width of the rider, determining a preferred riding posture of the rider, and assessing a saddle characteristic suitable for the rider based on both the rider's sit-bone width and the rider's preferred riding posture.

A measuring segment is integrally formed in a wing model. A plurality of thin membranes are formed on a surface of the measuring segment at predetermined intervals in a cord direction with a distortion gauge fixed to a back face of each of the plurality of thin membranes to output an electric signal upon distortion. The electric signals are converted by a pressure conversion means into pressures, thereby measuring a pressure distribution in an airflow direction. It is possible to prevent the generation of a step or a gap which affects an airflow along the surface of the measuring segment, thereby improving accuracy. The measuring segment is integrally molded by an optical molding method to form a complicated shape with a high accuracy and a low cost. Further, a plurality of the measuring segments may be disposed at intervals in a span direction for measuring pressure distributions.

The invention discloses a rock tunnel surrounding rock pressure gauge fixing device. The rock tunnel surrounding rock pressure gauge fixing device comprises a base plate and a steel arch, wherein a pressure gauge is fixed to the base plate through fastening screws, the base plate is fixed to the steel arch through positioning screws, and a plurality of adjustment bolts used for adjusting the inclination angel of the pressure gauge are arranged between the base plate and the steel arch, so that the pressure gauge can be closely attached to a surrounding rock excavation face. The rock tunnel surrounding rock pressure gauge fixing device is simple in structure and convenient to operate, the angle of the pressure gauge and the angle of excavated surrounding rock can be adjusted effectively through the adjustment bolts, the spatial posture of the pressure gauge can be adjusted flexibly due to the fact that both the adopted fastening screws and the adopted positioning screws are elastic, and the fixing strength of the pressure gauge is improved effectively due to the fact that the base plate is fixed to the steel arch.

The invention relates to a medical stretching and cutting machine. The medical stretching and cutting machine comprises a workbench and is characterized in that gauge fixing devices are arranged at two ends of the workbench respectively, a stretching device is arranged on the upper portion of the workbench, and traveling devices are arranged on two sides of the stretching device respectively; a stacking device is arranged at the left end of each traveling devices, and a mounting frame is arranged on the upper left side of each traveling device; a gauge crease prevention device is arranged on the lower portion of each mounting frame; a gauge pre-pressing device is arranged on the upper portion of each mounting frame; a gauge rolling device is arranged on the upper right side of each traveling device; a cutting device is arranged at one end of the workbench, and a control device is arranged on the lower portion of the workbench. The medical stretching and cutting machine has the advantages of simple structure, reasonable design, high automation degree, low labor intensity, high production efficiency and high quality of finished products.

The invention discloses a rotary type terminal seat and a terminal push-pull force detecting device thereof. The detecting device comprises a base provided with a left support at one end, and is characterized in that a horizontal screw rod and a guide rod are erected on the left support, guide sleeves are installed on the screw rod and the guide rod in a matching mode, terminal seat chucks are installed on the upper end faces of the guide sleeves, the screw rod is driven by a handle at the end to rotate, the base is further provided with a right support corresponding to the left support, a push-pull gauge fixing seat is rotatably installed on the right support, a push-pull gauge is fixedly installed on the push-pull gauge fixing seat, and terminal chucks are installed at ends of a push rod and a pull rod of the push-pull gauge respectively. According to the detecting device, the push-pull force is detected by using mechanical semi-automation, the chuck clamping mode is adopted for pulling, artificial factors are greatly reduced, the automation degree and detecting accuracy are improved, the labor intensity is reduced, and the working efficiency is improved.

The invention discloses an automobile gauge fixing device, which comprises a mounting seat. The top side of the mounting seat is symmetrically welded with two mounting rods; the bottom end of each mounting rod is provided with a first threaded hole; a threaded column is arranged in the first threaded hole in a threaded mode; the top end of the threaded column extends out of the first threaded hole; a sliding hole is arranged in the mounting rod; the sliding hole is communicated with the first threaded hole; a sliding rod is arranged in the sliding hole in a sliding mode; two sides of the sliding rod are welded with limiting blocks; the limiting blocks are located at one side of the first threaded hole; the inner walls of two sides of the sliding hole are provided with limiting grooves; andthe limiting blocks are arranged in the limiting grooves in a sliding mode. The structure is simple, the use is convenient, an automobile part can be fixed, a worker can be prompted after fixing, andthe use requirements of the user are met.

The invention relates to a device and method for debugging orthogonality of a positioning motion platform of direct writing lithography exposure equipment, and belongs to the technical field of directwriting lithography exposure. The debugging device comprises a support base, a precision positioning motion platform, a debugging mechanism, a support frame and a CCD image acquisition system, wherein the precision positioning motion platform comprises a Y-axis, an X-axis and a Z-axis; a vacuum suction cup is mounted on the top of the Z-axis; and a high-precision calibration plate with a Mark point is adsorbed above the vacuum suction cup. The debugging mechanism comprises a movable sliding table capable of lifting mounted on the support base, a debugging connection bottom plate, a movable sliding rail, a movable sliding rail motion seat slidingly matched with the movable sliding rail, and a dial gauge fixed on the movable sliding rail motion seat. The device and method, by first adoptinga CCD image acquisition system to measure the orthogonality of the X-axis and the Y-axis, and then using a debugging mechanism to debug the orthogonality of the X-axis and the Y-axis, can improve theefficiency and accuracy of the orthogonality debugging of the precision positioning motion platform of the direct writing lithography exposure equipment, and reduce the debugging cost.

The application discloses a detection table for detecting the hub runout. The detection table comprising a bracket, a working table, a rotating shaft, a motor, a dial gauge and a plurality of dial gauge fixing units. The working table is fixed on the upper end of the bracket. The motor is fixed on the lower end of the working table. The rotating shaft is arranged upright on the working table. An output end of the motor is fixed with the rotating shaft coaxially. The upper end of the rotating shaft is fixedly connected with a turntable. The upper end of the turntable is connected with a positioning shaft. The turntable is further provided with a plurality of fixing mechanisms thereon for fixing a hub. Each of the dial gauge fixing units includes a housing fixed on the working table, a moving rod, a first elastic member, a second elastic member and a slanting block. For each dial gauge fixing unit, the inside of the housing is provided with a cavity; the moving rod is located in the cavity; the bottom of the moving rod is connected to the housing through the first elastic member; and the housing is provided with a chute therein. Compared with the prior art, the detection table can be used for quickly positioning, mounting and fixing the dial gauge and also for quickly removing the dial gauge from the working table and well facilitating the detection of the hub of different models.

The invention relates to a multifunctional farm machine, which belongs to the agricultural machinery. Aiming at solving the problems, the invention provides the multifunctional farm machine capable of leaking no seed and no fertilizer and sowing seeds with even depth. The farm machine comprises a box body with a strap. The box body consists of a seed box and a fertilizer box. The structural key points of the farm machine are as follows: a seed outlet and a fertilizer outlet of a discharger on the bottom of the box body are connected with a cavity of a duck-billed feeder through hoses respectively; a control line of the discharger is connected to the axis of a free handle on a handle pivot; a stay on the axis of the free handle is connected to the axis of a bent angle compression bar of the bottom axis of the handle; a material lowering plate of the duck-billed feeder is fixed on the axis of a bottom plate; the tail part of the material lowering plate is a material stopping plate, supported by a spring and is in contact with the bent angle compression bar; an adjustable depth gauge fixed by a bolt is arranged on the bottom plate; and a plat spacing gauge is arranged on the axis of the handle.

The invention discloses a bridge flexibility detection device and a detection method, belonging to the bridge detection field. The detection device comprises a steel wire suspended on the bottom of the bridge, a flexibility detector connected to the lower end of the steel wire and a fixing seat fixed on the flexibility detector; the flexibility detector comprises a detector frame and an indication gauge fixed in the detector frame; the testing rod of the indication gauge is upwardly vertical; and the top end of the test rod is connected to the lower end of the steel wire. The detection method of the invention is based on the flexibility detector, cancels a suspension weight, reduces the adverse affect on the test result by the wind force, adopts the anchored steel chisel to replace the magnetic force table seat, saves the time and cost for establishing the platform, provides convenient and efficiency to the on-site installation and improves the working efficiency. The invention can effectively guarantee the resetting of the indication gauge test rod, greatly improves the accuracy and stability of the flexibility test. The indication gauge on the detector is provided with a spring which provides the needed pulling force and prevents the error caused by the deformation of the steel wire under stress, and the detection accuracy is improved.

The invention relates to a seepage test system for a shield tunnel under joint effect of elastic sealing gasket, soil and water. The seepage test system comprises an air pump system, a main test system, a pressurized water tank system and a data acquisition system, wherein the main test system comprises a main test box with an opening in the bottom, a sealing top cover on the upper portion of the main test box, a detachable pressurized air bag connected on the top cover, a precise pressure-regulating valve and a digital display compression gauge fixed on the top cover, and a soil container arranged on the lower part of the main test box, and provided with a mini porous hydraulic gauge and a mini earth pressure meter. The bottom of the main test box and two L-shaped adjustable base plates are connected in a seal manner through elastic sealing gasket on the lower part of the main test box and the L-shaped base plate elastic sealing gaskets. The two L-shaped adjustable base plates are connected through leading screws, and have grooves for fixing the L-shaped base plate elastic sealing gaskets. The seepage test system makes a test more controllable and allows more comprehensive factors to be taken into consideration during test.

The invention discloses a time-sharing power supply control system for a liquid helium level gauge. The time-sharing power supply control system comprises the liquid helium level gauge, a constant current source (4) and a computer control system (7). The liquid helium level gauge comprises a heater strip (1), a niobium-titanium superconducting filament (2) and a level gauge fixing rod (3), wherein the heater strip (1) and the niobium-titanium superconducting filament (2) are welded in series, and are fixed on the level gauge fixing rod (3). The constant current source (4) supplies power to the liquid helium level gauge. An on-off control card (5) and a voltage acquisition card (6) are arranged in the computer control system (7), wherein the on-off control card (5) is connected in series with a power supply circuit of the constant current source (4), and is used for controlling the on / off state and on / off time of power supply current. The computer control system (7) controls the on / off state and on / off time of the on-off control card (5), reads voltage values at the two ends of the niobium-titanium superconducting filament (2) of the liquid helium level gauge through the voltage acquisition card (6), and converts the voltage values into a level value.

The invention discloses a measuring device during the machining of a cylindrical grinder, which comprises a measurement main body, a measuring head, an adjusting device of the measuring head, a dial gauge and an adjusting device of the dial gauge. The device comprises the key points that: the dial gauge is vertically arranged on a dial gauge fixing rod of the main body through locking screws; the dial gauge adjusting rod is fixed at the tail end of a movable sleeve of a measuring rod through clamp nuts to keep concentric with the center line of the dial gauge; the movable sleeve of the measuring rod is arranged on the upper part of the measurement main body through a pin shaft; the measuring rod is fixedly arranged in the movable sleeve of the measuring rod through the locking screws; the measuring rod is integrated with the movable sleeve to move up and down by taking the pin shaft as the centre of a circle; a measuring head up-down adjusting arm fixed on the measuring rod through clamp screws is inserted into the lower end of the measuring rod; the measuring head is fixed at the lower end of the adjusting arm through the locking screws; and the whole measuring device is fixedly arranged at the corresponding position of a machine body through main body fixing screws. The measuring device has the advantages of simple structure, convenient measurement, high precision, scrap rate reduction and labor intensity reduction.

The invention relates to the technical field of pressure gauges, and particularly relates to an interactive digital display pressure gauge comprising a pressure gauge body, a display screen and a damping installing base. The pressure gauge body and the display screen are connected through an electric rotating shaft. The display screen is connected with the circuit of the pressure gauge body through a data connecting line. The display screen is provided with a human body proximity sensor and a position sensor. The pressure gauge body is provided with an alarm lamp and a microprocessor. The human body proximity sensor, the position sensor, a switch and a controller are connected on the microprocessor. The switch is connected with a cloud server. The electric rotating shaft, an electronic switch and a regulator are connected on the controller. The electronic switch and the regulator are connected with the alarm lamp. The damping installing base is provided with damping material, a damping flexible pipe and a pressure gauge fixing body. The pressure gauge fixing body is provided with an installing pipe and a fixing support. The technical scheme is high in interactivity, convenient in numerical reading and convenient and efficient in cloud server data storage, and the damping installing base has great damping effect and high practicality.

The invention discloses a construction engineering multi-angle mapping instrument based on a Rotating shaft. The construction engineering multi-angle mapping instrument comprises a base, a first rotating shaft is rotationally connected with the center of the upper surface of the base, a horizontal angle disc is embedded in the outer side of the first rotating shaft on the upper surface of the base, a first pointer is fixed on the first rotating shaft through a first sleeve, a U-shaped seat is welded at the top of the first rotating shaft, and a laser level gauge is rotationally connected withthe interior of the U-shaped seat through a second rotating shaft. The multi-angle mapping instrument disclosed by the invention has the benefits that as the U-shaped seat is rotationally connected with the fixed seat through the first rotating shaft, through the rotation of the first rotating shaft, a horizontal angle of the laser level gauge fixed on the U-shaped seat can be changed; when the first rotating shaft rotates, the first pointer fixed by the first sleeve on the first rotating shaft can rotate on the horizontal angle disc, so that a user intuitively observes the horizontal adjustment angle of the laser level gauge, the adjustment convenience of the laser level gauge is improved, and the mapping accuracy is improved.

The invention relates to a method for mechanically prethinning a cross section transmission electron microscope test sample. The method comprises the following steps: adhering a test sample together with a nut washer to the center of an end surface of a stainless steel column, and grinding with handheld abrasive paper; in the grinding process, measuring the thickness of the nut washer at multiple points by using a digital dial gauge fixed on a base so as to ensure the thickness of the test sample and parallel state of an upper surface to a lower surface; when the test sample is grinded to a half of original thickness, turning over the surface, and grinding the test sample to 0.03mm by using a same method. By adopting the method provided by the invention, situations that prethinning sizes are not sufficient or abrasion omission is caused in the sampling process are avoided; meanwhile the test sample is not grinded into a wedge shape, so that a prethinned test sample that small damage is caused, the thickness is qualified and the upper surface is parallel to the lower surface is obtained. The method provided by the invention is not only applicable to prethinning of a cross section transmission for studying interfaces, but also applicable to blocky materials, and has the advantages of being low in cost, high in success rate and the like.

The invention discloses an one-dimensional cylinder testing device capable of simulating dynamic head boundary effect of a soil body and a method thereof. The device comprises a main cylinder, a GDS standard controller, a synthetic glass cylinder apparatus, and a data acquisition device; the main cylinder comprises a top cylinder, several intermediate cylinders, a bottom cylinder and a dolly whichare connected from up to down, aperture water pressure gauge fixing devices are arranged at the main cylinder at different heights, and the bottom of the bottom cylinder is respectively connected with a GDS standard controller and a synthetic glass cylinder apparatus. The device is capable of simulating a dynamic change process of confined water in foundation, measuring and calculating the waterand soil pressure and deformation of the foundation under dynamic confined water effect, arranging the relative test data and determining the problems such as foundation bearing and deformation development rule, searching the influence of amplitude and rate of the dynamic confined water change on the foundation stability, providing effective test data support for researching the foundation problemdue to dynamic confined water effect, and providing basis for a later theoretical analysis model.

The invention discloses a method and device for measuring longitudinal displacement of a steel rail. The method comprises: a measurement instruction sent by the upper computer is received; according to the measurement instruction, a laser transmitter is controlled to emit laser to a positioning gauge fixed at a steel rail; an image sensor is controlled to collect a first image of the positioning gauge, wherein the first image includes a laser beam; and according to the first image fed back by the image sensor, longitudinal displacement of the steel rail is generated. Therefore, a technical problem of low detected data precision caused by the poor anti-vibration performance of the apparatus for detecting the displacement of the steel rail according to the correlated technique is solved.

The invention discloses a testing apparatus capable of simulating soil under effect of dynamic confined water and a method thereof. The testing apparatus comprises a main cylinder, a data acquisitioninstrument, a vacuum pump, and a confined water pressure control system; the confined water pressure control system comprises a synthetic glass cylinder apparatus, a flowmeter, and an electronic valve; the main cylinder comprises a cover plate, a top cylinder, several middle cylinders, a bottom cylinder, and a dolly; and aperture water pressure gauge fixing devices are arranged at different heightpositions of the main cylinder. The testing apparatus can simulate a dynamic and continuous change process of confined water in foundation, the water and soil pressure as well as deformation of the foundation under effect of the dynamic confined water are measured and calculated, the relative test data is arranged, the problems of bearing and deformation development rules of the foundation are determined; the influence of a mean value, an amplitude and rate of the change of the dynamic confined water on stability of the foundation can be researched, the effective test data support can be provided for research of the foundation problems due to effect of the dynamic confined water, and the basis can be provided for a theoretical analysis model at a later period.

The invention discloses a device for detecting the symmetry degree of the palm end of a roller. The device comprises a pedestal, a support fixed on the pedestal, and a dial gauge fixed in the end portion of the support; the support comprises a tubular upper support and a tubular lower support; one end of the lower support is fixed to the pedestal, and the other end of the lower support includes afirst through hole; one end of the upper support includes a second through hole whose diameter is the same with that of the first through hole, and the other end of the upper support fixes the dial gauge via a clamp fixedly connected; and a rubber tube sleeve with internal threads penetrate the first and second through holes, the internal of the rubber tube sleeve is in screwed with threads of a screw rod, and a rotating handle is fixed in one end of the screw rod. The invention also discloses a detecting method of the detecting device. After that the pedestal of the device is fit to the planar surface of the palm end, the support drives the dial gauge to measure the height of the palm end, height difference between palm ends in the two ends of the roller is obtained, and the symmetry condition of the palm end in the same side of the roller is derived.

The invention discloses a fire-fighting protection equipment high-pressure high-temperature hot steam protection performance test device comprising a control display system, a test system and a simulating heat source part; the test system includes a shielding plate, the shielding plate is arranged at an opening of a specimen support plate, an air baffle plate is arranged above the specimen support plate, a heat gauge fixing plate is arranged above the air baffle, the heat gauge fixing plate is provided with a heat gauge, the heat gauge is connected with the test system, and a limit switch is arranged below the shielding plate. A hot steam source in the condition of simulation of a fire is used as a hot danger source, the high-temperature hot steam protection performance of fire clothing in the presence of hot steam, can be tested, the protection ability of a piece of the fire clothing can be comprehensively evaluated, the test database of various performance of the fire clothing can be completed, and the fire-fighting protection equipment high-pressure high-temperature hot steam protection performance test device has extremely vital significance to research and development of new fire clothing materials, and hot wet ergonomic design of the fire protection clothing equipment.

The present invention discloses a surrounding rock stress measurement system. The surrounding rock stress measurement system includes a stress gauge body, a mounting guide rod and a display instrument box; the stress gauge body is provided with a pressure bearing block and a stress gauge fixing device; the stress gauge fixing device comprises a guide rod mounting hole, a positioning cylinder and a guide channel; the mounting guide rod comprises a guide rod and a connecting guide rod; the front end of the guide rod is provided with a positioning shaft end; and the positioning shaft end is provided with a positioning pin which is telescopically controlled by a telescopic control mechanism, wherein the positioning pin is corresponding to the guide channel; and the display instrument box comprises a controller, a display screen, a hydraulic pump station, a hydraulic control valve group, a pressure bearing block control loop, a positioning cylinder control loop and a stress numerical value acquisition calculation loop. With the surrounding rock stress measurement system adopted, the pose of the stress gauge body in a borehole can be accurately determined, and the stress gauge body can be positioned in the borehole, and therefore, measurement errors caused by the deviation of the borehole and axial deflection in the embedding process of a surrounding rock stress gauge can be decreased to the greatest extent, and surrounding rock stress can be accurately measured. The surrounding rock stress measurement system of the invention is especially for coal mining stress deep hole data acquisition and monitoring.

The invention discloses a detection device and a device method for the packaging effect of soft pack lithium batteries. The detection device comprises a vacuum chamber, a vacuum pump and a detection unit. The detection unit comprises a support frame disposed in the vacuum chamber, the support frame is provided with a locking device, and a dial gauge fixed to the support frame through the locking device is used for observing the swelling height of aluminum plastic films in the vacuum chamber and height variations with time. A pressure plate is connected to the bottom end of the dial gauge, drives a pointer of the dial gauge to rotate along with the expansion and contraction of the aluminum plastic films, and is used for observing value changes and determining the packaging effect. The detection method has the advantages that the cell packaging effect is simulated before batched packaging of cells, and interferences from other procedures are eliminated; the packaged aluminum plastic films are tested in the vacuum chamber, the interiors of the aluminum plastic films are highly stressed under the negative pressure of above -85KPa, whether the packaging is good or not can be tested in ashort time, and whether the aluminum plastic films can be expanded or not when the cells swell in later period can be simulated.

The invention relates to an experimental device with a soil horizontal displacement and pressure integrated observation assembly. The experimental device comprises a soil experimental tank and a waist rail tightly fixed on the periphery of the soil experimental tank. The experimental device also comprises the soil horizontal displacement and pressure integrated observation assembly. The device comprises an observation gauge supporting frame fixed on the waist rail through a bolt, an observation gauge fixing frame fixed on the an observation gauge supporting frame through a bolt and an observation gauge assembly fixed on the observation gauge supporting frame through a clip. An experimental mold acquires horizontal displacement and pressure at different sites of the soil so as to prevent distortion of experimental results, by adjusting relative positions of the observation gauge supporting frame, the observation gauge fixing frame and the observation gauge assembly which are fixed on the observation gauge supporting frame. Compared with a conventional experimental device, the experimental device provided by the invention has the advantages of wide observation range, high precision, simple structure, low cost, etc.

The invention discloses a rotating structure of a bevel gauge and a lower prop of a hot air seam sealing machine; the rotating structure comprises a rack, a main rotating shaft, a bevel gauge fixing seat and a lower prop fixing seat, wherein the main rotating shaft is rotatably arranged on the rack, the bevel gauge fixing seat is arranged on the main rotating shaft, and the lower prop fixing seat is rotatably arranged on the main rotating shaft; the rotating structure can be used for adjusting the overall angle of the bevel gauge fixing seat and the lower prop fixing seat, and can also be used for independently adjusting the angle of the lower prop fixing seat so that processing materials with different thicknesses and shapes can successfully pass through the hot air seam sealing machine, thereby the patterns of processed products are expanded, and the operation adaptability of the hot air seam sealing machine is increased.

The invention discloses a device and a method for automatically testing a drape factor of a high performance carbon fiber. The device comprises a vertically arranged support frame, a test frame horizontally fixed on the support frame, a fiber retainer A slidably fixed on the test frame, a fiber retainer B fixed at the middle part of the test frame, a fiber yarn frame which is mounted at one end ofthe support frame and is adjacent to the fiber retainer B, a tension regulator which is fixed at one end, far away from the fiber yarn frame, of the test frame and used for providing a preset tensionfor the fiber retainer A and a level gauge fixed on the test frame; a removable distance measuring sensor is arranged at the side edge of the support frame; leveling feet are mounted at the bottom ofthe support frame; and a controller connected with the distance measuring sensor by virtue of a signal is also mounted on the support frame. The device disclosed by the invention realizes breaking test integration, detection efficiency is improved, a test result is stable, and coefficient of dispersion is small.

The invention discloses an integral machining and measuring device and a method for a wax model of an intermediate casing. The integral machining and measuring device comprises a fixture disc. The upper surface of the fixture disc is uniformly provided with sixteen circular shaft bosses. The circular shaft shape composed of sixteen circular shaft bosses is concentric with the fixture disc. A T-shaped slide way is formed between two adjacent circular shaft bosses. A profile standard gauge fixing groove is formed in one side of the outer edge of two adjacent circular shaft bosses on the both sides of the T-shaped slide way. The profile standard gauge fixing groove is perpendicularly arranged with the T-shaped slide way. A measuring device is arranged on the T-shaped slide way. The fixture disc is fixed on a lower fixing plate of the wax model of the annular integral casing by an angle positioning pin. The inner profile of the lower fixing plate of the wax model of the annular integral casing is matched with the outer profile of the circular shaft boss. According to the integral machining and measuring device and the method for the wax model of the intermediate casing, the integral machining and measuring device for the wax model of the intermediate casing performs one-time clamping machining and measurement on the wax model of the annular integral casing, so that the multiple assembling and adjusting time of a fitter to the module is reduced, the labor intensity of the fitter is reduced, and the machining precision and the machining efficiency of the wax model of the annularintegral casing are improved.