63 results about "Rotary engine" patented technology

This invention provides a method and system for modeling defect data in a dual-cylinder rotary engine manufacturing line based on federated learning, relating to the fields of intelligent manufacturing and federated learning. The method includes: collecting raw defect data from the production line machine end and standardizing it to obtain standardized defect feature data; extracting the kinematic posture sequence of cylinder block cutting and the dynamic load spectrum of the assembly contact surface from the standardized defect feature data to construct a mechanical motion constraint basis; projecting the standardized defect feature data onto the basis to form mechanical mapping features; and sequentially performing operations including calculating the implicit semantic affinity between the vectors of each dimension of the mechanical mapping features using an interactive attention coupling mechanism, quantifying feature redundancy using an adaptive distance-weighted attenuation model, and constraining the feature distribution offset using an isoangular regularization reference feature space. This invention can achieve secure data sharing and feature alignment across production lines, improving the adaptability and detection accuracy of the defect identification model.

A rotary combustion engine includes a cylindrical housing with a plurality of internal cavities. Each of the internal cavities is a cylindrical segment of the housing, and a plurality of stationary blades are attached to its inner wall. The stationary blades extend inward to ride along the surface of a central shaft, contacting the shaft with a seal. Each cavity contains a rotor blade attached to the shaft and configured to drive the shaft. Each rotor blade extends outwardly to an inner curve of the housing with a sealing means. Each of the plurality of rotor blades has a reciprocating circular motion inside each of the cavities along the shaft between each of the stationary blades, thereby generating rotational power, delivering compressed rotational force, and provides cooling for the cavity.

A rotor-stator assembly for a rotary engine, compressor or pump, includes a rotor arranged to rotate eccentrically in a stator chamber, the geometry of the rotor being configured to provide a first fluid seal at a region of maximum proximity between the outer peripheral surface of the rotor and the inner peripheral wall of the stator chamber. A second fluid seal is provided by means of a component rotating with the rotor, one end of which is permanently connected to the inner surface of the stator chamber by means of bearings and slides along the inner surface of the stator chamber, and the other end of which is accommodated in a radially movable manner in a receptacle of the rotor, the first and second fluid seals delimiting a first chamber portion and a second chamber portion of the stator chamber.

The utility model relates to the technical field of engines, and provides a high-efficiency large-torque rotor engine. One of a plurality of turbine blades, slope blades and cambered surface blades is arranged in a rotor combustion chamber, the tangential stress area of a rotor is increased, dispersed and efficient combustion is achieved through an ignition channel, thrust in the rotating direction of the rotor is greatly increased, a crankshaft obtains larger torque, the overall acting power is also increased, and the service life of the rotor is prolonged. And the thrust-weight ratio of the rotor engine is improved. The crankshaft is matched with the rotor inner ring gear and the stator gear, so that power transmission of rotor acting is completed. The rotor inner ring gear and the rotor can adopt an integrated or split structure, and are connected through a polygonal embedded structure when being split, so that the torque resistance of the rotor is improved, the shear strength of a connecting bolt can be reduced, and the rotor is suitable for a high-power rotor engine structure. By improving the rotor structure, optimizing the blade design, adopting the polyhedral assembly structure and the like, the working efficiency, the torque and the overall performance of the engine are improved.

The invention relates to the technical field of forming dies, in particular to a rotor engine triangular rotor light-weight aluminum alloy integrated forming die which comprises an upper die base and a lower die base, a lifting assembly is arranged between the upper die base and the lower die base, a containing groove is formed in the upper surface of the lower die base, and a containing groove is formed in the groove wall of the lower end of the containing groove. A placement groove is formed in the upper surface of the mold core, a mold core is placed in the placement groove, a forming groove is formed in the upper surface of the mold core, an annular groove is formed in the forming groove, a fixing hole is formed in the groove wall of the lower end of the annular groove in a penetrating mode, an annular block is placed in the annular groove, and a fixing rod is fixedly connected to the lower surface of the annular block; the double-fixed mold core and the annular block are connected through elastic positioning, so that the stability of the groove bottom is guaranteed, and the shape is accurately controlled to avoid deformation; the mold core is synchronously jacked in a lifting linkage manner of the mold base, a casting is jacked out, and the whole process is simplified; part taking is convenient through pulling and unlocking, whole mold taking does not need to disassemble the main body, rapid mold changing is achieved, and the production efficiency, the casting quality and universality are improved.

A rotary internal combustion engine has a housing assembly comprising a rotor housing and a side housing. The rotor housing and / or the side housing has a main body made of a base material, a bounding layer including the base material at an interface with the main body, and an external layer made of an external material, the external layer secured to the main body via the bounding layer. The base material and the external material are dissimilar to one another. A wear-resistance of the external material is greater than that of the base material. The external layer defines at least a part of one or more of the face of the rotor housing, a peripheral inner face of the rotor housing, and an inner side face of the side housing.

Vehicle (10, 100) that features: an internal combustion engine (12, 102); a first rotary machine (MG2, MG) designed to output a drive torque; a battery (52, 120) designed to be charged by the kinetic energy of the internal combustion engine (12, 102) and designed to supply electrical energy to the first rotary engine (MG2, MG); and an electronic control unit (90, 122) designed to selectively perform a first operational control and a second operational control, wherein The first operating control is a control for causing the vehicle (10, 100) to drive on the basis of a driver's driving operation, and the second operating control is a control for automatically setting a target driving state on the basis of at least map information and / or road information and for automatically performing acceleration or deceleration on the basis of the target driving state. the electronic control unit (90, 122) is designed to start the internal combustion engine (12, 102) when a value representing a state of charge of the battery (52, 120) falls below an internal combustion engine start threshold value, while the operation of the internal combustion engine (12, 102) is stopped, and the electronic control unit (90, 122) is designed to ensure that the combustion engine start threshold in the second operating control is lower than the combustion engine start threshold in the first operating control, the second operating control includes an unmanned operating control and a manned operating control, the unmanned operating control being an operating control corresponding to an unmanned journey for automatically performing acceleration or deceleration without occupants in the vehicle (10, 100), and the manned operating control being an operating control corresponding to a manned journey for automatically performing acceleration or deceleration while at least one occupant is present in the vehicle, the electronic control unit (90, 122) is designed to selectively perform unmanned operation control and manned operation control, and the electronic control unit (90, 122) is designed to ensure that the combustion engine start threshold in unmanned operation control is lower than the combustion engine start threshold in manned operation control.

The invention discloses a kind of air injection device for small heavy oil rotor engine, belong to engine fuel supply field.The invention includes oil-gas separator, oil pump, pressure regulating valve, air nozzle, air pump, connecting block, oil pipe and oil tank.The connecting block is composed of oil inlet, oil return port, flow sensor, electromagnetic controller, pressure regulating valve, air inlet, pressure relief port and exhaust port.The connecting block is used for oil-gas transportation, maintains the constant pressure difference of oil-gas two-phase.Open three air ports, make oil-gas regulation become more sensitive.Through the pressure feedback of oil-gas two-way, reduce the mechanism at the two ends of oil-gas path, ensure the stable pressure difference of gas path and oil path respectively through the adjusting effect of pressure regulating valve, realize the accurate injection quantity control, improve the performance and working reliability of heavy oil rotor engine.The invention directly uses flow sensor and pressure regulating valve to control oil path flow by connecting block, saves the space of fuel metering nozzle, makes the structure of air injection device more compact.

The application discloses a rotary engine lubrication and cooling system, a rotary engine and a car, and relates to the technical field of rotary engines; the rotary engine lubrication and cooling system comprises a shell, a first rear end sliding bearing, a driving shaft and a first exhaust wheel, the first rear end sliding bearing is fixedly installed on the shell, and the driving shaft is arranged in the first rear end sliding bearing; a first through hole is formed in the first rear end sliding bearing along the radial direction of the first rear end sliding bearing, a lubricating groove in communication with the first through hole is formed in the journal of the driving shaft along the circumferential direction of the driving shaft, a cooling channel is formed in the driving shaft along the axial direction of the driving shaft, a communication hole in communication with the cooling channel and the lubricating groove is formed in the driving shaft, and a cooling flow channel is formed in the first exhaust wheel and is in communication with the cooling channel. The rotary engine lubrication and cooling system has the beneficial effects that the lubrication path and the cooling path of the engine oil are communicated, the lubrication of the bearing bush of the sliding bearing and the cooling of the exhaust wheel can be communicated with one liquid inlet pipe and one liquid outlet pipe, and the structure of the lubrication pipeline and the cooling pipeline is simplified.

It provides a simpler, lighter, and more balanced rotor-stator assembly. [Solution] A rotor-stator assembly comprising rotors 3 and 4 that rotate eccentrically within stator chambers 1 and 2, wherein the geometric shape of the rotors 3 and 4 is configured to provide a first fluid seal in the area of ​​maximum proximity between the outer circumferential surface of the rotors 3 and 4 and the inner circumferential wall of the stator chambers 1 and 2, thereby providing a second fluid seal by a component that rotates with the rotor, one end of which is permanently connected to the inner surface of the stator chambers 1 and 2 by a bearing and slides along the inner surface of the stator chambers 1 and 2, and the other end of which is radially movable within a receptacle of the rotors 3 and 4, and the first and second fluid seals define the first chamber portion and the second chamber portion of the stator chambers 1 and 2.

A rotor-stator assembly for a rotary engine, compressor or pump, comprises a rotor (3, 4) arranged to rotate eccentrically in a stator chamber (1, 2), the geometry of the rotor (3, 4) being configured to provide a first fluid seal at a region of maximum proximity between the outer peripheral surface of the rotor (3, 4) and the inner peripheral wall of the stator chamber (1, 2), whereby a second fluid seal is provided by means of a component (15) rotating with the rotor, one end of which is permanently connected to the inner surface of the stator chamber (1, 2) by means of bearings and slides along the inner surface of the stator chamber (1, 2), and the other end of which is accommodated in a radially movable manner in a receptacle of the rotor (3, 4), the first and second fluid seals delimiting a first chamber portion and a second chamber portion of the stator chamber (1, 2).

Externally compressed air variable cylinder rotary engine, gas engine Figure 1 Electromagnetic hook (1) release lever (2) so that cylinder base plate (9) can rotate around shaft (8) between the concave and convex surfaces of rotor (15) and the top plate of high pressure chamber (6). Rotor point (10) to bottom end (9) is bounced up. Rotor point (11) to bottom end (9) enters high pressure chamber to exhaust flue gas from exhaust duct (7) to cylinder (24). Lever moves fuel injector (3) to impact (9) to dotted line (7). (2) The nozzle is pressed to increase the pressure of (6). When the rotor point (12) passes the bottom of (9), (2) the spark plug (5) is turned. When (9) slides along the rotor point (12) to the rotor point (13), (6) the gas rushes into (24). (24) is composed of the stator (14) U-shaped groove, (9), and the rotor concave and convex curved surface. The exhaust port (19), the power output shaft (16), and the stator connecting rod (23) are fixed to the bearing (22) and (16) slidingly connected.

The invention provides a collaborative swirl injection device for a rotor engine. The collaborative swirl injection device comprises a head cover main body, an outer flow channel shell, a piezoelectric needle-shaped turbomachine and an electromagnetic valve. Double reverse rotational flows are generated through reverse spiral flow guide grooves in the inner wall and the outer wall of the piezoelectric needle-shaped turbomachinery, and fuel shear mixing is enhanced; and through a pressure adjusting air hole and a control system, premixing and layering dual-mode switching and spraying pneumatic shaping are achieved. The device has the advantages that flow resistance is low, atomization is good, the spraying form is matched with the flat and long combustion chamber of the rotor engine in a self-adaptive mode, and combustion efficiency is effectively improved.

A rotary engine is provided, comprising a planar housing with a circular center cavity, a pair of rotary wall valves flanking and overlapping the circular center cavity and centered on an axis extending through the circular center cavity, a truncated ellipsoid rotor rotatably mounted within the circular center cavity, and fore and aft cover plates flanking the planar housing.

The invention discloses a high-strength and easy-to-assemble rotor engine eccentric shaft capable of positioning a bearing, and belongs to the technical field of rotor engine parts. An eccentric shaft neck is arranged on the eccentric shaft body, a plurality of lightening holes are formed in a non-key stress area of the eccentric shaft neck and used for reducing the mass of the eccentric shaft on the premise that the structural strength is not weakened, and a regular hexagonal structure is arranged at the front end of the eccentric shaft body and used for fixing the eccentric shaft body. The eccentric shaft neck is arranged on the eccentric shaft neck so as to tighten screws of the flywheel and related parts, two sides of the eccentric shaft neck are respectively provided with a circular bead, and the two circular beads are respectively attached to two end faces of the needle bearing to form an axial limiting structure which is used for limiting axial movement of the needle bearing and the retainer of the needle bearing. Through the synergistic effect of structural design and process optimization, the comprehensive effects that the eccentric shaft is high in strength, durable, light in weight, convenient to assemble and reliable in bearing positioning are achieved at the same time, the installation and maintenance difficulty of the rotor engine is lowered, and the operation stability and comprehensive performance of the whole machine are comprehensively improved.

The invention discloses a rotor engine general arrangement structure and belongs to the technical field of automobile engines. And the compact cabin layout problem can be solved. An exhaust outlet is formed below the air inlet and exhaust side of the rotor shell, a water outlet connecting pipe nozzle and a cooling liquid temperature sensor are arranged at the front end, and the rear end is connected with an exhaust system; an air inlet adapter and an oil rail assembly are arranged above the air inlet adapter, a throttle body and an air inlet temperature and pressure sensor are arranged on the air inlet adapter, and an air inlet system is connected behind the throttle body. A spark plug and a knock sensor are arranged on the spark plug side. The front end of the front housing assembly is provided with a front cover and a bent through steel pipe assembly, and the front cover is provided with an eccentric shaft position sensor and the like. A water inlet connecting pipe nozzle is arranged below the left side of the rear shell assembly, a flywheel disc is arranged in the rear shell assembly, and a crankcase ventilation connecting pipe nozzle and the like are arranged above the rear shell assembly. An oil pan assembly is arranged at the lower end of the rotor shell, and components such as an oil pump adapter are distributed on the oil pan assembly, so that the compact cabin arrangement requirement is met.

The invention relates to an engine, and provides a rotary engine with a super expansion ratio. The engine consists of; the device is composed of a front cylinder shell, a middle cylinder shell, a rear cylinder shell, a vortex rotor, two main shafts, a compression air inlet partition plate, an air guide and exhaust partition plate, a gear, a fuel injector, an ignition device and a long-rod screw. The system structure is composed of a compression rotor set, a combustion expansion rotor set and a secondary expansion rotor set. The two main shafts do associated motion through the mutually meshed gear sets, and all the rotor sets also do mutually meshed motion. The vortex rotors are rotors with double vortex arcs, and the two vortex rotors can be meshed with each other like gears. Under the cooperation of the cylinder body shell, the two vortex rotors which are meshed with each other to rotate can realize the conversion between a compression space and an expansion space, and meanwhile, the space formed at the joint of the two vortex rotors and the cylinder body is fixed at a certain rotation angle, so that a constant-volume space and a constant-volume stroke are obtained. Due to the existence of the constant-volume space and the constant-volume stroke, gas completing first-time work can enter the next-stage rotor set through the constant-volume space to continue expansion work, after the constant-volume stroke is completed, the gas can be switched to the compression stroke, and then the gas is compressed and exhausted. A multi-stage acting rotor set can be designed from the technical concept principle, so that high-pressure gas energy is thoroughly released until the high-pressure gas energy is flush with the atmospheric pressure. The gas secondary work under the structure is not established on exhaust resistance, so that the engine gets rid of the constraint of the expansion ratio.

This application relates to an open fan component of an open rotor engine, an open rotor engine, and a noise reduction method. The open fan component includes a stator with stator blades; a rotor with rotor blades, the stator blades being located downstream of the rotor blades; the rotor blades are provided with a plasma actuator array, the plasma actuator array having multiple plasma actuators; the open fan component has a standby state, a first operating state, a second operating state, and a third operating state.

An engine stand having rotating features and an adapter to adjust the position of the center of gravity of a mounted engine. The adapter comprises a backing body and an adjustment body, the adjustment body having an adjustable linear displacement with respect to the backing body and a rotation axis of the engine stand. The linear displacement of the adjustment body is adjusted via a forcing screw.

To provide a structure that enhances compactness in machinery, such as engines and pumps which combine low vibration of a Wankel-type rotary engine with high working-fluid sealing (high efficiency) of a piston engine, and engines employing a vibration-free mechanism layout referred to as an "enclosed radial rotor R-zero radial cylinder arrangement", which provides a vibration-free apparatus.SOLUTION: In machinery such as engines employing the vibration-free mechanism layout referred to as an "enclosed radial rotor R-zero radial cylinder arrangement," a cylinder 5 having a bore diameter that is four times or more an eccentric amount of a crank pin of a crankshaft is adopted, an ultra-short-stroke structure is set, a length of a radial line surface 1g of a radial rotor 1a that drives a thin piston is set to one half or less of the bore diameter of the cylinder 5, the cylinder 5 is shifted inward until the radial line surface 1g intrudes into an effective cylinder portion, and a special bearing is adopted, thereby further miniaturizing the radial rotor 1a.SELECTED DRAWING: Figure 1a

The invention discloses a reed valve suitable for an air inlet system of a rotor engine, and belongs to the technical field of engine accessories. The problems that a traditional reed valve is prone to fatigue fracture, fast in abrasion and poor in sealing performance under the high-frequency vibration working condition of a rotor engine, and then the air inlet efficiency is low, and the service life is short are solved. The movable end of the carbon fiber diaphragm movably covers a valve port of the valve seat, the silica gel coating is coated on a sealing surface, in contact with the valve seat, of the carbon fiber diaphragm, the lift limiter is arranged on the outer side of the carbon fiber diaphragm, and the fixed end of the lift limiter covers the fixed end of the carbon fiber diaphragm. The lift limiter and the carbon fiber diaphragm are fixed on the valve seat through bolts, the cantilever end of the lift limiter is an arc-shaped surface which is gradually far away from the carbon fiber diaphragm, and a gap between the other end of the lift limiter and the valve seat is the lift of the carbon fiber diaphragm. The high-frequency vibration fatigue resistance can be improved. The silica gel coating reduces high-frequency impact abrasion, improves the sealing performance, reduces the sealing leakage rate and improves the air inlet efficiency.

The invention discloses an aviation rotor engine and an efficient ignition method of the aviation rotor engine, a double-spark-plug symmetrical ignition structure is arranged in a combustion chamber of the aviation rotor engine, the structure comprises a first spark plug and a second spark plug which are symmetrically arranged along the center of the combustion chamber, and the second spark plug is a cathode-free spark plug. And the second spark plug shares the cathode assembly with the first spark plug. According to the efficient ignition method, the aviation rotor engine is adopted, the first sparking plug serves as a main ignition source, the second sparking plug serves as an auxiliary ignition source, ignition energy differentiation configuration and asynchronous ignition time sequence control are adopted for the main ignition source and the auxiliary ignition source, and in other words, the ignition energy of the first sparking plug is higher than that of the second sparking plug, and the ignition time is earlier than that of the second sparking plug. According to the method, rapid combustion in the cylinder is achieved by optimizing the ignition strategy, upgrading is completed on the basis of an original ignition scheme, core parts of the engine do not need to be redesigned, the comprehensive performance of the engine is effectively improved, and the using requirement of the aviation rotor engine is met.

The invention discloses an air inlet pipe structure of a rotor engine, and belongs to the technical field of rotor engines. The air inlet pipe body is of a single-air-channel structure and is integrated with an oil sprayer base and an oil sprayer support installation point, the oil sprayer is installed on the oil sprayer base, the oil sprayer is provided with an oil sprayer support, the oil sprayer support is connected with the air inlet pipe body, and the air inlet pipe body sequentially comprises an air inlet end, a middle section and an air outlet end which are integrally formed. The air outlet end is connected with a rotor shell air inlet channel, an internal channel is formed in the air inlet pipe body and is of a smooth cambered surface structure, and a continuous air flow channel from a throttling valve body to the rotor shell air inlet channel is formed. Through structural integration, air passage variable cross-section optimization and fixing mode improvement, the inherent defects that a rotor engine is short in air inlet time, complex in airflow movement and low in inflation efficiency are fundamentally overcome, meanwhile, cost control and assembly convenience are considered, and the power performance, fuel economy and emission characteristics of the engine are comprehensively improved.

A main body of the rotary cylinder engine looks like a corona in appearance and comprises a four-layer structure, the outermost layer is a common round flat pipe for centralized exhaust and gas supply, the middle is separated, the left side is a channel for centralized exhaust of waste gas of all cylinders, and the right side is a common pipeline for centralized preheating of combustible compressed gas. And the second layer is a shell of which two semicircles are buckled to support the machine body. The third layer is formed by buckling four petal circles, each petal circle is provided with a gas storage pool, two sides of each gas storage pool are respectively provided with two oil sealing rings, and each gas storage pool is provided with a cylinder cover capable of being adjusted inwards. And the fourth layer is a rotating structural member which is provided with four hollow rotating cylinders with sharp bottoms and large vertical surfaces, and cooling water cavities are arranged around the cylinders and are assembled with the power output shaft into a whole. A motor is started to drive a power output shaft and drive an oil-gas mixing air compressor, combustible gas is conveyed to a preheating round flat pipe and then conveyed to each gas storage pool through the round flat pipe, and when an upper opening of a cylinder is aligned with a point A of a lower opening of the gas storage pool, the combustible gas rapidly rushes into the cylinder, and when the cylinder filled with the combustible gas rotates to a point B below a spark plug, the combustible gas enters the gas storage pool. The spark plugs ignite combustible gas in the cylinder, the combustible gas explodes in the cylinder, the air cylinder is pushed to slide towards the point C, and the power output shaft is driven to rotate to complete acting action, the air cylinder rushes combustible compressed gas into the cylinder from the point A, the two spark plugs ignite the combustible gas in the cylinder when the air cylinder rotates to the point B, and under the pushing of strong explosive force in the air cylinder, the combustible compressed gas is ignited. The cylinder body naturally slides from the lower point B to the lower point C of the cylinder cover and drives the power output shaft to rotate to complete the whole acting process.

This invention discloses a novel rotary engine structure and its operating method, comprising a cylinder block assembly, a front cover assembly, a rear cover assembly, a main shaft assembly, and a rotor assembly. The cylinder block assembly, front cover assembly, and rear cover assembly are all triangular-like structures. The cylinder block assembly has three semi-circular cavities at its center, and radial seals are respectively provided at the junctions of the three semicircles of each cavity. The front cover assembly has a front center hole, and the rear cover assembly has a rear center hole. The cylinder block assembly, front cover assembly, and rear cover assembly are fixedly connected to form the engine body. The rotor assembly includes an "8"-shaped rotor, with end face seals provided on both ends of the "8"-shaped rotor. The "8"-shaped rotor is disposed within the three semi-circular cavities. The main shaft assembly passes sequentially through the front center hole of the front cover assembly, the center of the "8"-shaped rotor in the cylinder block assembly, and the rear center hole of the rear cover assembly, with both ends of the main shaft assembly being limited.

A device and method to recover and reuse kinetic energy during vehicle braking and subsequent restart. During braking, a piston air compressor A is driven by vehicle wheels 2 via a crankshaft 10 and t

This invention discloses a radial sealing structure for a rotary engine. A triangular groove is formed at the junction of every two arc-shaped sidewalls of the stator. A matching sealing post is installed within each triangular groove, with its two sides corresponding to the two sides of the triangular groove. The side of the sealing post facing the cavity has an arc-shaped surface that contacts the rotor and forms a sealing cavity. Cylindrical spring holes are provided on both sides. A second compression spring groove is provided at the apex of the triangular section of the sealing post. A first compression spring groove is provided at the apex of the triangular section corresponding to the second compression spring groove of the sealing post, with a compression spring located between the first and second compression spring grooves. Cylindrical spring holes are installed within the two cylindrical spring holes. This invention achieves a separation seal between adjacent combustion chambers. The arc-shaped surface of the sealing post contacts the rotor through rolling friction, reducing wear on the sealing post and improving the sealing effect, thereby extending the service life of the rotary engine.

The invention relates to the technical field of triangular rotor machining, in particular to a high-precision milling device for a triangular rotor of a rotor engine, which comprises a mounting seat, a first driving assembly and a second driving assembly are arranged on the mounting seat, and a clamping disc is fixedly mounted at the output end of the first driving assembly. An eccentric shaft is fixedly installed on the clamping disc, a triangular rotor forming part is jointly placed on the eccentric shaft and the clamping disc, a fixing base is fixedly installed on the eccentric shaft, a fixing groove is formed in the fixing base in a penetrating mode, a fixing rod is slidably connected into the fixing groove, and the triangular rotor forming part is fixed through meshing pre-fixing of inner teeth of the eccentric shaft and three-point cooperative limiting. Displacement, deflection and axial movement are prevented, the epicycloid profile consistency is improved, and the molded line error is superior to that of a traditional mode; accurate switching of rotor postures is achieved by relying on the revolution ratio of 2: 3, repeated clamping errors are avoided, and standard unification is guaranteed; and due to the step-by-step milling design, cutting force is concentrated, tracks are attached, and thin-wall deformation is effectively eliminated.