111results about How to "Avoid Huge Economic Loss" patented technology

The invention relates to an anti-electric-larceny prediction method based on machine learning and an apparatus thereof. The method comprises the following steps of acquiring learning sample data and prediction sample data, wherein the learning sample data comprises an electric larceny characteristic factor, a user number, a voltage grade, an industry type and a subordinated line; the prediction sample data comprises an electric larceny characteristic factor, a user number, a voltage grade, an industry type and a subordinated line; carrying out pretreatment on the learning sample data and the prediction sample data; determining an anti-electric-larceny neural network model to the learning sample data after pretreatment; taking the prediction sample data as an input quantity of the anti-electric-larceny neural network model, operating the anti-electric-larceny neural network model and outputting an electric-larceny suspected coefficient of each user; according to the electric-larceny suspected coefficient, predicting an electric-larceny suspected family.

The invention belongs to bridge construction, and particularly relates to dynamic real-time monitoring method for concrete bridge prestressed tendon tensioning force and a special prestress construction system. The dynamic real-time monitoring method for the concrete bridge prestressed tendon tensioning force includes the steps of initializing and real-time dynamic control loading. The prestress construction system comprises at least one tensioning device, and each tensioning device comprises a hydraulic station, a reversing valve bank, a jack, an A / D data collecting module, a PLC, a central processing unit, a human-computer interface, a direct force measuring device, a hydraulic force measuring device, a prestressed tendon elongation measuring device, a friction resistance test device and a security alarm device. The double-control requirement, difficult to met in the prior art, for taking stress control as the principle thing and an elongation value as a checking item is met, the dynamic real-time monitoring method has the advantages that construction quality and safety can be effectively ensured, and problems found in the tensioning process can be solved in time.

The system is composed of new type water, electricity, gas meters, communication network system, automatic charge management center of supplying sector for water, electricity and gas, bank network system and relevant equipment. The invention counts out consumption of water, electricity and gas, and use fee for the said supplying sector in real time. The method compares use fee and userí»s fund on account of bank. If userí»s fund on account is enough, then, relevant use fee is deducted from userí»s account, and transfered to account of the supplying sector. If userí»s fund on account is not enough and under condition that reminding user to add fund to account is non effective, then user will be cut off the supply. Once enough funds are added, then supplies are resumed. Advantages are: automatic, accurate charging use fee remotely, in high efficiency, preventing economic loss of the supplying sector, omitting bother for user to go to the charge management center or bank to pay the fee.

The invention discloses a diagnostic method and detecting system for GIS partial discharge. The diagnostic method comprises the following steps: a database containing standard grey-scale maps of various partial discharge types is established; the number of discharge times, discharge amplitude and discharge phase angles of the partial discharge within a set work cycle of a GIS to be detected are acquired; a grey-scale map to be identified of the partial discharge of the GIS to be detected is formed according to the number of discharge times, the discharge amplitude and the discharge phase angles; the grey-scale map to be identified is contrasted with the standard grey-scale maps in the database to judge the type of the partial discharge. The diagnostic method can be used for quickly detecting the type of the GIS partial discharge. The detecting system adopting the principle of the diagnostic method can realize automatic detection of the GIS partial discharge, and therefore the GIS partial discharge can be found out in time and the type of the GIS partial discharge can be judged.

The present invention relates to the technical field of shale development, especially to a shale gas exploitation stratum section grading evaluation method and device, and a terminal device. The analytic hierarchy process and the mean square difference method are employed to calculate gas-bearing evaluation parameters, influencing the shale exploitation, in different stratum sections to integrallyobtain corresponding weight calculation values, the analytic hierarchy process and the mean square difference method are employed to calculate compressibility evaluation parameters, influencing the shale gas exploitation, in different stratum sections to integrally obtain corresponding weight calculation values, on this basis, a shale gas-bearing and compressibility evaluation equation is established, a result is calculated according to the evaluation equation to establish the shale gas-bearing and compressibility evaluation criterions and integrate the gas-bearing and compressibility evaluation criterions to establish an exploitation integration evaluation criterion of a shale gas exploitation area so as to accurately and effectively evaluate the shale gas exploitation stratum section and avoid the problem that the inaccurate evaluation causes great economical loss in the exploitation process.

The invention relates to an offshore doubly fed wind power generator fault judging method based on a GRA-LSTM-stacking model. The method includes the following steps that firstly, a GRA is used for analyzing the SCADA state variable, and the state variable relevant to the temperature of a generator is screened out to serve as the input of an LSTM network; secondly, an LSTM is used for predicting the temperature of the generator under the normal state, and a predicated value is obtained; thirdly, the residual error absolute value between the practical value and the predicated value is calculated so that a statistical method can be used for setting an alarming threshold value, the early failure of the generator is distinguished accordingly, and a failure sample is extracted; and fourthly, astacking fusion algorithm is used for conducting data processing on the extracted failure sample, and a final accurate judgment result is output. Compared with the prior art, the offshore doubly fed wind power generator fault judging method has the beneficial effects of being accurate in failure judgment, high in universality, simple in failure sample obtaining and the like.

The invention provides a technical scheme of a method for whole hole replacement of an existing bridge. A self-propelled girder moving cart is matched with a pier steel tower rack to perform whole hole replacement of the existing bridge. The system has little influence on business line train operation and existing equipment and is simple in operation, high in applicability and good in safety.

The invention relates to the technical field of power generation by using float glass melting furnace waste heat, aiming to solve the technical problems of low waste heat utility efficiency, low powergeneration efficiency, poor system stability, large heat recovery cost, large fluctuation range of waste gas and waste heat parameter, serious environment pollution, high cost of once investment andthe like when using waste heat in the traditional float glass melting furnace. The gas outlets of a plurality of float glass melting furnaces of the invention are communicated with the gas inlets of aplurality of parallel connection waste heat boilers, and the gas outlets of the waste heat boilers are communicated with a chimney; the water outlet of a boiler water feed pump is respectively communicated with the circulation water inlets of a plurality of parallel connection waste heat boilers, the vapor outlets of a plurality of parallel connection waste heat boilers are communicated with a gas collection cylinder, the outlet of the gas collection cylinder is communicated with the vapor inlet of a steam turbine, and the steam turbine is connected with a generator; and the steam discharge pipe of the steam turbine is connected with a condensate water system which is communicated with the water inlet end of the boiler water feed pump via a deaerating device. The invention is suitable fortwo or more than two float glass melting furnaces to perform waste heat power generation.

The embodiment of the invention provides a cold-proof heat insulation structure for a cold area highway tunnel and a construction method of the cold-proof heat insulation structure, and relates to the technical field of building of the cold area highway tunnel. The occurrence of frozen damage in a high-altitude cold rich-water area can be effectively prevented, and the construction quality and the driving safety are ensured. The cold-proof heat insulation structure comprises a bonding layer, a heat insulation layer, a protection layer and a reinforcing layer, wherein the bonding layer is formed by bonding mortar, the heat insulation layer is bonded on the base surface of a wall body of the tunnel structure through the bonding layer and is formed by foam glass products, the protection layer is arranged on the surface of the heat insulation layer and is formed by light-weight coating mortar, the reinforcing layer is arranged on the heat insulation layer through the light-weight coating mortar of the protection layer, and the reinforcing layer is alkaline-resistant glass fiber gridding cloth.

The invention relates to a denoising radio frequency spectrum peak value acquisition method based on Internet of things electric power temperature measurement equipment. The denoising radio frequency spectrum peak value acquisition method based on the Internet-of-things electric power temperature measurement equipment comprises the steps of firstly, measuring and collecting the echo energy values of all frequency points within a label band width range, and re-measuring a frequency point if burr occurs suddenly in the measurement process so as to achieve the aim of eliminating the burr; then eliminating smaller bulges in a frequency spectrum curve line by a smoothing algorithm, and reducing the amplitude of a larger bulge in the curve line; and finally, acquiring all peak values in the curve line accurately by a five-point peak value judgment method. By adopting the method, the influences on the temperature measurement equipment caused by the interference of the same-frequency-band radio frequency equipment, environment noise and measurement errors are effectively avoided, further, the frequency spectrum curve peak can be acquired correctly, and finally temperature can be measured correctly. The real-time monitoring on equipment in running is realized by utilizing an SAW-RFID (surface acoustic wave-radio frequency identification device), so that electric power operation departments can forecast the failure and can solve problems in advance, and a large amount of economical loss and injuries and deaths of people in failure are prevented.

The present invention relates to a calorimeter durability cold and hot impact test abnormity point detection method. A sampling period ts is taken as an interval to collect the calorimeter durability test process state parameters, a test process state parameter data set is established, the state parameter features are extracted, the state feature parameter model of 4000-times cold and hot impact tests is established, and the abnormality determination is performed through combination of the feature parameter model of each temperature state according to the extracted feature value of each state parameter to complete the abnormality point detection. The calorimeter durability cold and hot impact test abnormity point detection method can perform real-time online detection of the calorimeter durability cold and hot impact test process monitoring fault abnormality points to effectively improve the whole-process monitoring capacity of the test process and improve the fine detection level of the fault abnormality points, and the detection process is automatically controlled, the human cost is saved, the operation is convenient, the reliability is high, the service life is long, the safety is good, and the detection result reliability is high.

The invention discloses a repairing and changing method of a full rotation steering oar device. The repairing and changing method includes: demounting a drive assembly which and the full rotation steering oar device are arranged together; sealing a gap on an input shaft of the full rotation steering oar device; arranging cables on the full rotation steering oar device; demounting the full rotationsteering oar from a ship enclosure well, and hoisting the full rotation steering oar device out of water through the cables; performing repairing and changing on the full rotation steering oar device; sealing the gap on the input shaft of the full rotation steering oar device; hoisting the full rotation steering oar device into water through the cables, and mounting the full rotation ship steering oar device onto the ship closed well; demounting the seal on the input shaft of the full rotation steering oar device; and mounting the drive assembly and the full rotation steering oar together. The repairing and changing method can effectively prevent huge economic loss due to the damaged full rotation steering oar device during ship dockage, can shorten the maintenance period, can reduce themaintenance cost, and can improve the maintainability of the device.

The invention discloses a GIS equipment vibration signal detector. The GIS equipment vibration signal detector comprises a sensor, a signal processing unit, a signal acquisition unit and an upper computer; the sensor is arranged on a detection point of GIS equipment and is used for detecting local vibration signals generated in the GIS equipment; the signal processing unit is used for filtering, amplifying and detecting the detected signals; the signal acquisition unit is used for converting amplified electric signals into digital quantity; and the upper computer detects the characteristic quantity of the signals and carrying out waveform statistics analysis so as to realize fault detection. With the GIS equipment vibration signal detector adopted, the mechanical and discharge faults of the GIS equipment can be accurately detected; the launch of the state maintenance work of the GIS substation electrical equipment can be effectively guided; the latent defects of the equipment can be detected timely; huge economic losses caused by the maintenance and disassembly of the GIS can be prevented; and the safety, reliability and stability of the GIS equipment can be improved.

The invention discloses a method for recognizing a rotor crack fault of a steam turbine generator unit. The method comprises the steps that first, in the running process of the steam turbine generator unit, vibration characteristic components of a rotor in the steam turbine generator unit are measured in real time, wherein the vibration characteristic components of the rotor include the rotor vibration trend, the rotor vibration frequency spectrum and the rotor vibration phase position; second, whether a crack fault happens to the rotor of the steam turbine generator unit or not is judged according to the vibration characteristic components. Thus, early warnings about early-stage cracks of the rotor are achieved, an operation unit can be prompted to perform shutdown in time to perform flaw detection examination and handling, and the possible disastrous accident that a shaft is broken and a machine is destroyed due to continuous operation of the unit is avoided.

The invention connects all electric wirings needed to carry out control power supply grounding / undervoltage (CPSGU) to device of CPSGU alarm. Sampling voltage, the device of CPSGU alarm processes, analyzes state of CPSGU. After detecting CPSGU, the device of CPSGU alarm sends out signal in high level to drive buzzer alarming.

The invention discloses a large buried depth thin bedrock area high seam full-mechanized caving mining pressing frame water-inrush control method comprising the following steps that 1, by means of geophysical prospecting or drilling, and a bedrock structure and rock parameters above a coal seam can be obtained; 2, based on a key stratum theory, and the bedrock structure above the coal seam is classified; 3, based on classification results of a bedrock above the coal seam, a overlying strata fracturing structure of a mining face is analyzed and determined; 4, reasonable working resistance of amining support is calculated according to the overlying strata fracturing structure of the mining face; 5, locations and parameters of key rock strata of water damage control is determined; and 6, control measures are formulated based on determined locations and parameters of the key rock strata of the water damage control. The large buried depth thin bedrock area high seam full-mechanized cavingmining pressing frame water-inrush control method can prevent the working face from occurrence of frame pressing and water collapsing accident, and the working face is caused to shutdown to cause great economical loss, and safe and efficient mining of coal mines is realized.

The invention discloses a pit shaft casing-cement sheath cementing surface testing device for high temperature and pressure environments of a hot dry rock stratum. With a casing as the center, in thehorizontal direction, the testing device successively includes a casing, a cement sheath, formation rock, a level loading power transmission member and a heat insulation layer from inside to outside.A heating device is uniformly arranged on the inner side of the heat insulation layer. The heating device adopts an electrothermal alloy wire as a heating element and the insulation heat layer adoptsa ceramic fiber board-microporous insulation board as an insulation material. The level loading power transmission member is connected with a hydraulic ram to obtain pressure in the horizontal direction. A vertical loading power transmission member is connected with a universal testing machine to obtain pressure in the vertical direction. The casing is connected with a water pump through a water pipe to constitute a circular system. The testing device further includes a leakage testing system. According to the pit shaft casing-cement sheath cementing surface testing device for the high temperature and pressure environments of the hot dry rock stratum, environmental temperature can meet the needs of the formation temperature of a hot and dry rock, and infliction of accurate and non-uniformstress field loading is provided so that the real indoor test data of the hot and dry rock are obtained.

The invention provides a TSV (through silicon via) through hole insulation layer test structure based on an SOI (silicon on insulator) substrate. No. 1 and No. 2 ohm contact test points are respectively manufactured at the front side of top layer silicon and the back side of bottom layer silicon, each ohm contact test point comprises a heavy doping active region and an aluminum metal press welding point, during the testing, a No. 1 direct current variable voltage source is connected with a No. 1 ampere-voltage meter in series and is then connected with a TSV copper post and the aluminum metal press welding point of the No. 1 ohm contact test point in series through a metal probe, and the No. 2 direct current variable voltage source is connected with a No. 2 ampere-voltage meter in series and is then connected with the TSV copper post and the aluminum metal press welding point of the No. 2 ohm contact test point in series through a metal probe. The TSV through hole insulation layer test structure has the advantages that the complete TSV through hole insulation layer test can be realized, the TSV through hole insulation layer quality is integrally evaluated, the existing regions of defects of the two-part (top and bottom) TSV through hole insulation layers can be effectively judged, the wafers, with the defects, of the TSV through holes can be conveniently screened and removed, and the reliability of an SOI three-dimensional integrated device can be improved.

The invention relates to the technology of electric larceny preventing, in particular to an intelligent long-distance electric larceny preventing checking system which solves the problem that there is no electric larceny preventing system capable of effectively monitoring and analyzing various electric larceny behaviors yet at present. The intelligent long-distance electric larceny preventing checking system comprises a wireless high-voltage no-load voltage ratio tester, an RS485 communication cable, a wireless data recorder, a GPRS network, a wireless router, a hardware firewall, a communication front-end processor, a data bus, a database server, a disk array, an application server, a WEB server, a maintaining workstation, a printer, a redundancy exchanger and a GPS clock. The data transmission end of the wireless data recorder is wirelessly connected with the data transmission end of the wireless high-voltage no-load voltage ratio tester, and the data transmission end of the wireless data recorder is connected with the tail end of the RS485 communication cable. The intelligent long-distance electric larceny preventing checking system is suitable for preventing electric larceny.

The invention discloses a loosening-preventing and automatic-fastening device of connection bolts for combination and fixation of storage batteries. According to the loosening-preventing and automatic-fastening device, a ratchet sleeve is arranged on the front side of a fixed connection handle, a ratchet is arranged inside the ratchet sleeve, fixed inner teeth are arranged on the inner side of the ratchet, ratchet teeth are arranged on the outer circumference of the ratchet, receding stopping grooves are formed in the inner side of the ratchet sleeve, receding stopping springs are arranged in the receding stopping grooves, a receding stopping pin is arranged on the front side of each receding stopping spring, a fixed clamping base is arranged on the rear side of the fixed connection handle, and a tension spring is arranged on the upper side of the fixed clamping base. When copper connection bars of a storage battery pack are twisted slightly, and alternatively vibration is produced due to environmental factors, the ratchet teeth prevent the bolts from moving in the loosening direction under the action of the receding stopping pins, the bolts are pushed to rotate in the fastening direction, and the function of automatically fastening the bolts is achieved.

The invention discloses a stereo garage constructed below an existing building in a storey-adding mode. The stereo garage comprises the upper existing building, an underground storey-adding space, a stereo garage exit and entrance, a mechanical parking system, a matching system and an accessory equipment system; the underground storey-adding space is located below the upper existing building, is an underground space newly excavated without dismantling an upper existing building main body, and is used for arranging the mechanical stereo garage; the stereo garage exit and entrance is an independent space convenient for vehicle arrival; and the mechanical parking system, the matching system and the accessory equipment system are all arranged in the underground storey-adding space, and under the joint effect of the mechanical parking system, the matching system and the accessory equipment system, a vehicle automatically moves between the stereo garage exit and entrance and a designated mechanical parking space to complete the automatic storing and picking-up processes of the whole vehicle. The huge economic loss caused by dismantling of the upper existing building can be avoided, and more parking spaces can further be provided for vehicle owners without affecting use of the upper existing building.

The invention relates to a remote control type drilling bypass circulation valve, belonging to valves special for underground leakage stoppage in drilling process. The invention is characterized in that a control mechanism and a switch mechanism are respectively arranged at the middle upper part and the middle lower part in a case. The control mechanism is composed of a control body, a control nozzle, a return spring and an upper seal ring. The control nozzle is arranged in the upper port of the control body, the return spring is sheathed at the middle lower part outside the control body, andthe upper seal ring is arranged at the joint of the upper end part of the control body and the inner wall of the case. The switch mechanism is composed of a switch body, a guide pin, an upper bearing, a lower bearing and a lower seal ring. The guide pin is arranged at the upper part of the switch body, the upper bearing is arranged at the upper port of the switch body, the lower bearing is arranged at the lower port of the switch body, and the lower seal ring is arranged at the middle and lower parts of the switch body. The invention has the advantages that a drill column is not required to be taken out when leakage is occurred in drilling process, a pump is stopped and started, so as to remotely control the bypass valve to be open, and the valve is closed by remote control after circulation leakage stoppage is completed. Drilling stop time is reduced, leakage stoppage is timely and reliable, and accident complication is avoided.

The invention provides a transaction volume real-time monitoring method and system. Statistics can be performed on the transaction volume in real time, the future transaction volume is predicted to obtain the transaction volume prediction value, then deviation degree calculation is performed on the real transaction volume and the transaction volume prediction value at the same moment, and when deviation exceeds the preset value, real-time early warning is performed; operators can conveniently find abnormities in time and carry out emergency disposal, and huge economic losses are avoided. Moreover, training of the machine learning model and the prediction of the transaction volume are operated on production at the same time; on one hand, a training platform periodically acquires data in a database to train and update a machine learning model, and publishes the trained machine learning model and model parameters to a stream computing platform; and on the other hand, the flow calculation platform periodically loads the latest machine learning model and model parameters to predict the real-time transaction volume. The method is advantaged in that the the machine learning model can be quickly iterated, and adaptation to actual changes of services and transactions is quicker.

The invention provides primers for detecting cucumber mosaic virus-passiflora isolates. A primer pair in the primers includes primers CMV-657F and CMV-657R for identifying the cucumber mosaic virus-passiflora isolates, and the other primer pair in the primers includes primers CMV-174F and CMV-174R used for real-time fluorescent quantitative RT-PCR of the cucumber mosaic virus-passiflora isolates.The invention also provides application of the primers to quantitative detection of cucumber mosaic virus-passiflora isolates. The quantitative detection method combining the two primer pairs has highsensitivity, high specificity and accurate detection result, is used for early identification of passiflora virus-free seedlings and field infected plants and virus content quantitative analysis, andprovides technical support for seedling breeding and promotion of passiflora virus-free improved varieties. The method can accurately quantify the cucumber mosaic virus-passiflora isolates in the sample within 4-5 hours, thus saving time, simplifying the experimental steps, facilitating corresponding remedial measures before the onset of the plant disease and preventing huge economic losses caused by wide spreading of the virus among crops.

The invention discloses a display device detection method and electronic equipment, and the method comprises the steps: obtaining a first detection image formed when a display device displays a firstspecific image, and determining the position of dust in the first detection image; acquiring a second detection image formed when the display device displays a second specific image, and removing theimage content in the first area where the position is located in the second detection image according to the position where the dust is located, so as to eliminate the interference of the dust attached to the display device on the detection of the display device; and filling the first area according to the peripheral image of the first area in the second detection image to form a third detection image, so as to judge whether the display device has defects according to the third detection image. According to the method, under the condition that dust is attached to the display device, whether the display device has defects or not can be accurately detected without being influenced by the dust, and the detection accuracy is improved.

The invention discloses an air conditioner capable of rotating. The air conditioner comprises a base; the top of the base is movably connected with a rotating block; the bottom of the rotating block penetrates through the top of the base, and extends to an inner cavity of the base; the top of the rotating block is fixedly connected with the air conditioner; grooves are respectively formed in the tops of the frontal surface and the back surface of the air conditioner; a circular groove is formed in the bottom of one end, positioned in the inner cavity of the base, of the rotating block; the bottom of the inner cavity of the base is fixedly connected with a fixed block; and the top of the fixed block extends into an inner cavity of the circular groove. The rotating block is fixed at the top of the fixed block for rotation through a bearing, so that the air conditioner can be rotated, and the use direction of the air conditioner can be conveniently adjusted; the space is cooled or heated through the rotatable air conditioner, so that the cooling or heating efficiency is greatly improved, the temperature adjusting time is saved, and the problem of causing huge economic loss for enterprises using the air conditioner is prevented.

The invention relates to a shale gas development evaluation method and device and a terminal device, and relates to the technical field of shale gas development. The shale gas development evaluation method includes: for each target area of shale gas development, standardizing various parameters affecting the shale gas development of the target area according to a preset rule to obtain various standard parameters; For each standard parameter of each target area, calculating the first weight coefficient of each standard parameter by an analytic hierarchy process, and calculating the second weight coefficient of each standard parameter by a mean square error method; according to the first weight coefficient and the second weight coefficient, calculating a standard weight coefficient of the corresponding standard parameter; for each target area, calculating the developability of the target area shale gas according to various standard parameters of the target area and corresponding standardweight coefficients. Through the above method, the developability of the shale gas development area can be accurately and effectively evaluated.

The present invention relates to a method of collecting semen from the epididymis or the testis of a lab animal and an artificial insemination method thereof. The present invention relates to a new applicable method in the animal production field using artificial insemination. Since the present invention solves the problems of the conventional method of artificial insemination of lab animals, it is excellent in terms of the pregnancy rate and productivity; is time-efficient; and is superior in economic and industrial respects by preventing a huge economic loss due to the costs for maintaining the mass breeding of animals.

The invention discloses a metal processing workbench for medical appliances, which comprises a base, movable holes are opened on both sides of the top of the base, blocks are movably connected to both sides of the top of the base, and The bottom is fixedly connected with a movable block, the bottom of the movable block passes through the movable hole and extends to the inner cavity of the base, both sides of the inner cavity of the base are fixedly connected with a motor, and the output shaft of the motor is fixedly connected with a first gear, A transition plate is provided in the inner cavity of the base and between the two motors, and the interior of the transition plate is movably connected with a threaded pipe through a bearing. The invention can drive the first gear and the second gear to rotate through the motor, and then can drive the threaded rod, the movable block and the clamping block to move through the threaded tube until the two clamping blocks can clamp the workpiece, and the clamping degree is higher. The efficiency of metal processing for medical appliances is improved, the quality of metal workpieces for medical appliances is improved, and the problem of causing huge economic losses to metal processing enterprises for medical appliances is avoided.

The invention discloses a feed method preventing crash onto a spindle of a horizontal five-axis machine at a swinging angle A / B. The feed method includes that a feed track aid (4) in a cylinder form is set to cover a part (2) and a tool (3) for mounting the part; after a cutter (1) processes at a certain station, tip of the cutter (1) returns to the outer cylindrical surface of the feed track aid (4), then lifts to the top face of the outer cylinder and rotates with B angles, with the excircle of the aid as a virtual tip track and the center point of the top face of the outer cylinder as the center, along the excircle of the outer cylinder; after rotates with a required angle, the tip of the cutter (1), along the outer cylindrical surface, descends to the height of the next process station and moves forward for the process, in this way, the cutter (1) or the spindle never crashes onto the part (2) or the tool (3), and huge economic loss, caused by changing of the spindle and the part crashed, is avoided.