99 results about "Hydraulic control unit" patented technology

The invention relates to the technical field of water turbine generator set installation and maintenance, and discloses an intelligent water turbine runner test device and method, and the device comprises a hydraulic control unit which is used for providing and adjusting pressure oil for a constant-pressure cavity, an opening cavity and a closing cavity of a water turbine runner; and the main controller is used for receiving a user instruction, calling an automatic control logic according to a selected test item, driving the hydraulic control unit to execute a corresponding oil path action, and receiving and processing the cavity pressure of the runner hub, the servomotor stroke and the blade rotation angle parameter which are acquired in real time so as to automatically complete the runner test item specified by the national standard. The test process is automatically executed through the main controller, and frequent manual operation is replaced by simple clicking, so that the labor intensity of operators is greatly reduced.

The invention discloses a drive-by-wire hydraulic steering system and method based on linear active disturbance rejection, and belongs to the technical field of automobile steering, the steering system comprises a hydraulic control unit and a control module, the hydraulic control unit is used for controlling the movement direction and the movement speed of a steering oil cylinder by controlling the flowing direction and the flowing speed of hydraulic oil; and the control module is used for calculating the received input turning angle and the actual turning angle according to a linear active-disturbance-rejection steering angle control algorithm, controlling the steering of a steering control valve in the hydraulic control unit, and indirectly controlling the steering angle and the motion trail of the vehicle through the steering of the steering control valve. By means of the steering system and method, the problems of non-linear interference such as uncertainty of tire aligning torque influence factors and electromagnetic coupling of a steering execution motor can be effectively solved, high-precision steering angle tracking control is achieved, the steering precision and the response speed of a vehicle are remarkably improved, and the maneuverability and the sense of safety of a driver are improved.

The application relates to a kind of injection molding equipment of hybrid insulator, including injection unit, mould unit, electric control unit, temperature control unit, hydraulic control unit, rack and safety protection unit, injection unit includes feeding mechanism, plasticizing mechanism and injection mechanism, feeding mechanism is used to receive high-temperature vulcanized solid silicone rubber and output after high-temperature vulcanized solid silicone rubber is compacted and exhausted, plasticizing mechanism is used to receive high-temperature vulcanized solid silicone rubber sent by feeding mechanism and output after high-temperature vulcanized solid silicone rubber is once plasticized, injection mechanism is used to receive high-temperature vulcanized solid silicone rubber sent by plasticizing mechanism and output after high-temperature vulcanized solid silicone rubber is twice plasticized.The application is more compact by setting two-stage plasticizing, and high-temperature vulcanized solid silicone rubber is injected into mould in better flowability, and the performance of the covering layer of the finally formed hybrid insulator is more excellent, and the product quality of hybrid insulator is improved.

To provide a hydraulic control unit for a saddle-riding type vehicle, which includes a pump for moving a brake fluid and a holder for holding a filter through which the brake fluid passes in the pump, can be miniaturized, and can prevent the holder from not being provided in a prescribed posture.SOLUTION: The hydraulic pressure control unit includes a base body in which an internal flow path that allows a wheel cylinder and a master cylinder to communicate with each other is formed, and a pump that moves a brake fluid in the internal flow path, wherein the base body includes a recessed portion in which the pump is provided, the pump includes a cylinder in which a compression chamber that compresses the brake fluid is formed, a piston portion whose input-side end portion is pressed by a motor and whose partition-side end portion is inserted into the compression chamber to partition the compression chamber, and a holder that holds a filter through which the brake fluid flowing into the inflow flow path passes, and the holder includes an abutting portion whose base end portion is connected to the cylinder and that abuts on a wall surface of the recessed portion.SELECTED DRAWING: Figure 3

The present invention achieves a hydraulic pressure control unit for a saddle-riding type vehicle, the hydraulic pressure control unit being capable of further reducing the possibility of decreases in sealing performance between a base and a housing compared to prior art. A hydraulic pressure control unit according to the present invention comprises: a base in which an internal flow path is formed; a housing that accommodates a control substrate and is sealed using an adhesive between the base and the housing; a plurality of holes provided in one of the base and the housing; a plurality of pins provided to the other of the base and the housing and inserted into the holes to position the base and the housing; and a bolt that fixes the base and the housing. When at least one of the plurality of holes is defined as a selected hole and a pin, from among the plurality of pins, inserted into the selected hole is defined as a selected pin, the selected pin is press-fitted into the selected hole.

The application belongs to the technical field of hydraulic control systems of injection molding machines, and provides a hydraulic control unit, a servo control mold locking hydraulic system and an injection molding machine. The control unit comprises a high-frequency response servo valve, a one-way poppet valve, a two-way poppet valve and a controller. One end of the two-way poppet valve is connected to the rod cavity of a mold locking oil cylinder, and the other end is connected to a system oil tank. The controller is electrically connected to the high-frequency response servo valve, and is signal connected to a pressure sensor and a displacement sensor respectively. Compared with the prior art, the application integrates a high-frequency response servo valve, a one-way poppet valve, a two-way poppet valve and a closed-loop sensor controller to construct a high-precision hydraulic control unit, significantly improves the position repeatability and dynamic response speed of micro-opening actions, effectively meets the demand of advanced processes such as foaming injection molding and thin-wall molding for dynamic pressure adjustment of a mold cavity, and avoids problems such as uneven density of products, flash or mold damage.

Provided are: a hydraulic control unit that can meet a need for miniaturization and a method for manufacturing such a hydraulic control unit. This hydraulic control unit is for a brake system mounted on a straddle-riding type vehicle, the hydraulic control unit comprising a base in which a brake fluid flow path is formed, a circuit board that controls the driving of a hydraulic regulating valve that opens and closes the flow path, a housing that accommodates the circuit board, and a connecting unit that connects the base and the housing, wherein: the connecting unit comprises a recessed section formed in the base, and a pin held by the housing and having an end press-fitted to the recessed section; a through-hole is formed in the end press-fitted to the recessed part; the outer edge of the through-hole is defined by a first branch section and a second branch section, both ends of which are connected to each other, in the end press-fitted into the recessed section; and a reinforcing member different from the base and the pin abuts and presses at least one among the first branch section and the second branch section.

The present invention obtains a hydraulic control unit for a straddle-type vehicle, the hydraulic control unit which can be mounted in a space where the mounting of a conventional hydraulic control unit would be difficult. This hydraulic control unit is for a brake system mounted in a straddle-type vehicle, the unit comprising: a base body in which a flow path for a brake fluid is formed; a motor that is the driving source of a pump that applies pressure to the brake fluid; a fill valve that opens / closes the flow path; and a release valve that opens / closes the flow path, wherein the fill valve and the release valve are provided to a first side surface that is one side surface of the base body, and the motor is provided to a second side surface that is different from the first side surface and is one of two side surfaces of the base plate which face each other in the alignment direction of the fill valve and the release valve.

A fluid pressure control unit comprises a base body in which an internal flow channel is formed through which brake fluid flows, a motor which is a drive source of a pump which is provided in the internal flow channel, and a housing which is connected to the base body and covers the motor, wherein the motor has a main body section comprising a stator and a rotor, and an output shaft attached to the rotor, wherein the stator has two magnet sections, and if, when viewed from a direction of view along a center of rotation of the output shaft, a direction along an imaginary straight line passing through the centers of the two magnet sections is defined as the first direction and a direction perpendicular to the first direction is defined as the second direction, the length of the main body section in the second direction is shorter than that in the first direction.

This invention discloses an electronic braking system. The electronic braking system according to this embodiment may include: a reservoir storing a pressurized medium; an integrated master cylinder having a master piston connected to the brake pedal, a main chamber whose volume changes according to the displacement of the master piston, and a sealing component sealing the main chamber; a hydraulic supply device that operates a hydraulic piston to generate hydraulic pressure according to an electrical signal output corresponding to the displacement of the brake pedal; a hydraulic control unit disposed between the hydraulic supply device and a plurality of wheel cylinders, and controlling the flow of the pressurized medium supplied to the plurality of wheel cylinders; a loop pressure sensor that senses the hydraulic pressure supplied through the hydraulic supply device; a cylinder pressure sensor that senses the hydraulic pressure in the main chamber; a check flow path connecting the main chamber and the hydraulic supply device; and a check valve disposed in the check flow path to control the flow of the pressurized medium.

The utility model discloses a kind of off-highway dump truck auxiliary braking systems, belong to off-highway dump truck braking technical field, including the hydraulic clamp disc type auxiliary brake of being installed in middle axle and rear axle transmission shaft, and the hydraulic control unit consisting of hydraulic power unit, auxiliary brake valve, energy accumulator and connecting pipeline;Hydraulic power unit connects steering hydraulic oil tank and auxiliary brake valve, and energy accumulator supplies high-pressure oil to auxiliary brake valve to auxiliary brake to release brake.The system is mainly used to improve off-highway dump truck parking brake safety and braking force, applicable to the vehicle of design load 90 tons below, provide redundancy brake guarantee for off-highway dump truck, realize quick response auxiliary brake when main brake fails.

The invention belongs to the technical field of injection molding machine hydraulic control systems, and provides a hydraulic control unit, a servo control mold locking hydraulic system and an injection molding machine, the control unit comprises a high-frequency response servo valve, a one-way poppet valve, a two-way poppet valve and a controller; one end of the two-way poppet valve is connected with a rod cavity of the mold locking oil cylinder, and the other end is connected with the system oil tank; the controller is electrically connected with the high-frequency response servo valve and is in signal connection with the pressure sensor and the displacement sensor. Compared with the prior art, the high-precision hydraulic control unit is constructed by integrating the high-frequency response servo valve, the one-way poppet valve, the two-way poppet valve and the closed-loop sensing controller, so that the position repetition precision and the dynamic response speed of micro-opening action are remarkably improved; the requirements of advanced technologies such as foaming injection molding and thin-wall forming on dynamic adjustment of the pressure of the cavity are effectively met, and the problems of uneven density, flash or mold damage of products are avoided.

The invention provides a disc wheel clutch and dual-motor hybrid power transmission transmission system. The disc wheel clutch and dual-motor hybrid power transmission transmission system comprises a hybrid power transmission and a plurality of disc wheel clutches, a first output shaft, a first input shaft, a second output shaft, a second input shaft and an intermediate shaft, the system further comprises a first motor, a battery, a power control unit, a second motor, an engine and an oil pressure control unit. The engine and the first input shaft are coaxially arranged, the first motor and the first input shaft are coaxially arranged, and the second motor and the second input shaft are coaxially arranged; in the hybrid power mode, engine power is distributed to the transmission shaft and the first motor through the hybrid power transmission, redundant power is converted into electric energy to be stored, and when the engine power cannot meet the vehicle driving requirement, engine power and second motor power are coupled to the transmission shaft through the hybrid power transmission. In the pure electric mode, power of the second motor is transmitted to the transmission shaft through the hybrid power transmission.

The invention provides a hydraulic control system for titanium sponge production, which relates to the technical field of hydraulic control systems and comprises a pump source block hydraulic control unit, a main cylinder hydraulic control unit, a mold locking control unit, a mold moving control unit and a mold receiving control unit. The hydraulic control system can control corresponding equipment to complete the processes of main cylinder downward pressing, die sleeve lifting, die pushing, die clamping and material receiving, the hydraulic control system is higher in integration and more comprehensive in function, the titanium sponge production requirement can be met, valves in the hydraulic control system are mostly of cartridge valve combined structures, and the production cost is reduced. The controllability is excellent, and the manufacturing and maintenance cost is very low.

The application relates to the field of vehicle electro-hydraulic braking, in particular to a high-precision electro-hydraulic braking system which comprises an oil tank, an energy storage unit, a braking execution end and a hydraulic control unit, the oil tank is used for storing brake fluid; the energy storage unit is used for building pressure for the brake fluid; the braking execution end realizes braking action through brake fluid pressure building and pressure releasing; the hydraulic control unit is used for connecting the energy storage unit and the corresponding braking execution end, the hydraulic control unit comprises a first normally open valve, a second normally open valve and a first normally closed valve, one end of the first normally open valve is connected with the energy storage unit, and the other end is connected with the braking execution end; one end of the second normally open valve is connected with the other end of the first normally open valve; one end of the first normally closed valve is connected with the other end of the second normally open valve, and the other end of the first normally closed valve is connected with the oil tank. The pressure releasing process of the braking execution end can be accurately adjusted, the influence caused by the poor consistency of electromagnetic valves can be effectively offset, the wheel edge pressure releasing error can be controlled in a low range, and the high-precision braking demand can be met.

The present invention provides a hydraulic pressure control unit capable of diagnosing whether an abnormality is present or absent in a component for controlling the hydraulic pressure of a brake fluid. A hydraulic pressure control unit 10 comprises: a hydraulic pressure control mechanism including a base body 60 in which a fluid passage for a brake fluid is formed and a component which is incorporated in the base body 60 and which includes solenoid valves 40a-40d for controlling the hydraulic pressure of the brake fluid; a control board 70 including a control unit 71a that controls operation of the component; and an inertial measurement unit 74 that measures inertial motion. The control board 70 includes: an acquisition unit 71b that acquires an output signal Sgi of the inertial measurement unit 74 as inertial information pertaining to a measurement result from the inertial measurement unit 74; and a diagnostic unit 71c that executes diagnostic processing to diagnose whether an abnormality is present or absent in the first to fourth solenoid valves 40a-40d as the component, on the basis of the inertial information.

This invention relates to an automatically leveling suspension system and a wide-body dump truck, belonging to the field of mining new energy vehicle technology. Specifically, it includes: a power unit configured to provide pressurized liquid medium to the suspension system; a hydraulic control unit, connected to the power unit, configured to control the flow direction and velocity of the liquid medium; an actuator, a retractable structure, located between the chassis and body of the mining vehicle, connected to the hydraulic control unit, configured to support the weight of the vehicle body and adjust the left-right height difference; a monitoring unit configured to monitor the angle data between the vehicle body and the horizontal direction in real time; and a system control unit electrically connected to the power unit, hydraulic control unit, and monitoring unit, configured to acquire and process the angle data and control the operation of the power unit and hydraulic control unit. This invention solves the problem of automatic battery swapping failure in unmanned wide-body dump trucks due to the left-right tilt angle of the vehicle body.

The pressure pulsation of the hydraulic control unit is attenuated. The present invention is provided with: a first liquid chamber that communicates with an inlet port via a first opening; a second liquid chamber communicating with the first liquid chamber via a communication hole and communicating with the outlet port via a second opening; a first piston slidably provided in the first liquid chamber; a first biasing member that biases the first piston toward the first opening side; a hole formed in the first piston so as to be recessed from the second opening side toward the first opening side; a second piston slidably provided in the hole; a second biasing member that biases the second piston toward the first opening side; a first through-hole provided in the second piston and penetrating from the first opening side to the second opening side; a first valve body capable of opening and closing a first opening side of the first through hole; a third biasing member that biases the first valve body toward the second opening side; a protruding member that has a protruding portion that can be inserted through the first through-hole and that can come into contact with the first valve body, is provided on the second opening side of the first piston with respect to the second piston, and moves integrally with the first piston; a second valve body provided in the second liquid chamber and capable of opening and closing a second opening side of the communication hole; and a fourth biasing member that biases the second valve body toward the first opening side. The present invention is provided with: a sliding member that is disposed in the recess of the protruding member, slides in the hole in response to the pressure liquid from the input port side, and has an internal passage; and a fifth biasing member that biases the sliding member toward the first opening side.

Provided is a control device capable of making it easier than before to upright a leaning vehicle. A control device according to the present invention is mounted on a leaning vehicle, the control device comprising: a state acquisition unit that acquires information indicating a state of the leaning vehicle; a determination unit that determines that braking force is to be generated on a wheel of the leaning vehicle when a predetermined condition is satisfied in a first state in which an automatic braking force generation mechanism for generating braking force on the wheel of the leaning vehicle is operable; and an operation execution unit that executes an auxiliary operation for operating the automatic braking force generation mechanism to generate braking force on the wheel of the leaning vehicle when the determination unit determines that braking force is to be generated on the wheel of the leaning vehicle. The predetermined condition includes a rollover condition indicating that the state acquisition unit has acquired information indicating that the leaning vehicle is in a rollover state.

The invention provides an underground closed-loop variable-diameter stabilizing device which comprises a central pipe and is provided with a measurement and control unit, and the measurement and control unit is used for pre-storing preset well track information, collecting target well track information and outputting a well track repairing instruction; the mud piston is sleeved on the central pipe and is connected with a first push rod; the hydraulic control unit is connected to the central pipe, the hydraulic control unit is connected with a second push rod, and the hydraulic control unit can drive the second push rod to move in the axial direction relative to the central pipe with the drilling fluid pressure as power according to the well track repairing instruction; the reducing mechanism can generate radial size change through axial movement relative to the central pipe, and the two axial ends of the reducing mechanism are connected with the first push rod and the second push rod respectively. The technical problem that an existing variable-diameter stabilizer with a fixed outer diameter or a complex structure cannot automatically adjust the outer diameter in real time underground can be solved.

The invention relates to the technical field of hydraulic engineering prefabricated part transfer, in particular to a prefabricated wave wall step-by-step turnover device and method.The prefabricated wave wall step-by-step turnover device comprises a trolley base, a pressure-bearing frame, a turnover assembly, a hydraulic driving assembly and a hydraulic control unit, the trolley base is provided with an adjustable extension fixing frame, and the pressure-bearing frame supports the turnover assembly to achieve turnover and impact simulation; the overturning assembly comprises an L-shaped overturning table body and a trigger type counterweight assembly which are arranged front and back and have a height difference, clamping and impact simulation of a precast block can be completed, and the hydraulic driving assembly adopts a symmetrical hydraulic push rod group and is matched with an angle sensor, a pressure sensor and an integrated control panel, so that accurate control over the angle and the speed is achieved; accurate clamping, multi-angle positioning and real impact working condition simulation can be achieved, the overturning and testing efficiency is improved, and reliable guarantee is provided for wave wall precast block quality detection and engineering safety.

The invention discloses a ratooning rice combine harvester visual navigation system based on binocular vision. The ratooning rice combine harvester visual navigation system comprises an equipment position adjusting unit, an image collecting unit, an image processing unit and a hydraulic control unit. The equipment position adjusting unit adjusts the orientation of the image acquisition unit in real time according to the posture of the harvester; the image acquisition unit is used for acquiring ratooning rice images and transmitting the images to the image processing unit; the image processing unit processes the ratooning rice image, identifies a crop boundary to obtain boundary line information, judges the steering and posture position of the harvester according to the boundary line information, and sends a generated speed execution signal and a steering execution signal to the hydraulic control unit; the hydraulic control unit controls the advancing speed of the harvester according to the speed execution signal and controls steering of the harvester according to the steering execution signal. According to the method for obtaining the boundary navigation line by utilizing the probability Hough transformation, the problem of low image imaging precision caused by overlarge vibration of a traditional intelligent harvester is solved.

To provide a control device capable of informing earlier than conventional devices that a hydraulic pressure control unit mounted on a saddle-ride type vehicle is in an overused state. [Solution] The control device of the present invention is a control device mounted on a saddle-type vehicle equipped with a hydraulic control unit capable of performing anti-lock brake control, and comprises an acquisition unit that acquires a first physical quantity indicating wear information of the hydraulic control unit and a threshold value, and a judgment unit that, by comparing the first physical quantity with the threshold value, determines that the wear information indicates that the hydraulic control unit has experienced wear exceeding a standard, and determines to output an alarm signal that causes an alarm device to perform an alarm operation.The acquisition unit is further configured to acquire a second physical quantity indicating information on the usage history of the saddle-type vehicle, and acquire the threshold value, which has a value that varies depending on the second physical quantity.

The utility model provides a single-action multi-rotation electro-hydraulic actuating device which comprises a hydraulic actuator, a gear box, a local electro-hydraulic control unit and an energy accumulator control unit, the hydraulic actuator is connected with the gear box and used for converting linear motion into multi-rotation motion of an output shaft of the gear box, and the local electro-hydraulic control unit is connected with the energy accumulator control unit. The local electro-hydraulic control unit and the energy accumulator control unit are connected with the hydraulic actuator through a hydraulic pipeline, the energy accumulator control unit comprises an energy accumulator and an energy accumulator control valve block used for regulating and controlling the flow and pressure of hydraulic oil entering and exiting from the energy accumulator, and the local electro-hydraulic control unit is connected with the energy accumulator through the energy accumulator control unit. According to the single-action multi-rotation electro-hydraulic execution device, failure oil supply of the energy accumulator is guaranteed to be emergency and reliable, and the single-action multi-rotation electro-hydraulic execution device is suitable for multiple specifications; the hydraulic lock prevents oil liquid from intruding by mistake and ensures operation safety; a hydraulic actuator and a gear box are combined to optimize the structure; the integrated control unit improves the overall integration level, reduces the cost, energy consumption and fault rate, and enhances the stability and universality.

A hydraulic pressure control unit (1) for a brake system mounted to a straddle-type vehicle includes a housing (40) that accommodates a circuit board (31). The housing (40) includes: a main body (41) formed with an opening (43a) in a region opposing the circuit board (31); a lid (48) that covers the opening (43a) and adheres to the main body (41); and a lid fixing section (50) provided in a space surrounded by the main body (41) and the lid (48) and fixing the lid (48) to the main body (41). The lid fixing section (50) includes: an engaged section (51) held by one of the main body (41) and the lid (48); and an engaging section (55) that is held by the other of the main body (41) and the lid (48) and engages with the engaged section (51).

To provide a traveling vehicle capable of using engine output without waste for respectively driving right and left traveling devices by hydraulic pressure of hydraulic fluid fed from a non-feedback type pump, facilitating steering wheel operation in consideration of a steering wheel angle corresponding to the size of a curve, and traveling on the curve at a proper speed without excessively reducing the speed on the curve.SOLUTION: The control unit 40 receives a signal of the steering wheel angle from the steering wheel angle detection unit 14a to detect that the traveling machine 10 is traveling on a curve, and controls the operation of the hydraulic control units 33L, 31R so that the control pressure of the swash plate of the non-feedback pump 31L, connected to the hydraulic motor 32L, 32R that drives the left or right traveling device 20L, 20R on the outer side of the curve increases according to the magnitude of the steering wheel angle. 33R.SELECTED DRAWING: Figure 2

A fluid pressure control unit comprises a base body, a motor unit which is a drive source of a pump, and a housing which is connected to the base body and covers the motor unit, wherein the motor unit comprises a stator and a rotor, an output shaft, and a cover which accommodates the stator and the rotor, wherein, when viewed from a direction along the center of rotation of the output shaft, the cover has a projection which extends outwards in a portion of the area of ​​the outer circumferential surface and forms both end sections circumferentially around the center of rotation, wherein the base body has a recess for the projection into which the projection is inserted, and wherein, at least at one of the two end sections of the projection circumferentially, a side wall section is arranged opposite the recess for the projection circumferentially.

A hydraulic control unit is provided, including a hydraulic control apparatus with a bidirectional pressurization function, where the hydraulic control apparatus includes a second hydraulic chamber and a first hydraulic chamber. The second hydraulic chamber provides a braking force for a first group of wheel cylinders through a first brake line provided with a first control valve. The first hydraulic chamber provides a braking force for a second group of wheel cylinders through a second brake line provided with a second control valve.

1. Name of this design product: Integrated container wellhead safety control system. 2. Application of this design: Used for onshore oil and gas extraction, integrating a hydraulic control unit (high-pressure hydraulic system, low-pressure hydraulic system, hydraulic control system, fusible plug circuit), RTU control unit, power supply and distribution system and auxiliary equipment facilities into one unit. It has many functions such as controlling downhole safety valves, wellhead main safety valves, wing safety valves, regulating electric switches, throttle valves, fire detection, combustible gas monitoring, data acquisition, display and transmission, etc., to meet the normal and stable use of internal facilities under harsh working conditions. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses a marine profile laser cutting clamping and material pushing and pulling control method and system. The control method comprises the steps that the type of a to-be-machined marine profile is recognized through codes; based on the recognized profile type, multiple servo shafts are controlled to act cooperatively, the clamp is driven to rotate to the theoretical angle of the matched profile and move to the up-and-down and left-and-right target positions of the matched profile, and space self-adaptive positioning of the clamp is completed; a V-axis front-back servo motor is controlled to drive the clamp to feed in the length direction of the profile, and the clamp is switched from high-speed advancing to low-speed advancing and then stops; a hydraulic control unit is controlled to drive a clamp to clamp the profile through a double-control electromagnetic valve, and meanwhile an oil pump motor is controlled to operate in an intermittent mode; and after the sectional material is cut, the double-control electromagnetic valve is controlled to switch the state, so that the clamp loosens the sectional material, the one-time clamping and material pushing and pulling process is completed, self-adaptive clamping and precise material pushing and pulling of the marine sectional materials of various types and different specifications are achieved, and the cutting efficiency and precision are improved.