94results about How to "Avoid compromising accuracy" patented technology

This application relates to a method, apparatus, device, and medium for adaptive parameter pruning of a deep learning model. The method includes: acquiring a pre-set training set of a deep learning model; pre-training the deep learning model based on the training set to determine the parameters of each layer in the deep learning model; capturing the low-rank structure of the parameters of each layer in the deep learning model based on a unified tensor network model, and decomposing the parameters into multiple ring factor tensors and a core factor tensor; constructing an adaptive parameter pruning model based on a sparse Bayesian learning algorithm according to the prior distribution results of the Gaussian distributions corresponding to the ring factor tensors and the core factor tensor, and the prior distribution results of the Gamma distribution corresponding to the noise level; and pruning irrelevant components of the parameters based on the adaptive parameter pruning model that has reached convergence to determine the corresponding compressed parameters. This application enables the deep learning model to maintain a low number of parameters while still maintaining high accuracy.

The utility model belongs to the technical field of test jigs, and discloses a Bluetooth module test jig which comprises a workbench, a detection mechanism is arranged at the top of the workbench, a clamping assembly is arranged in an inner cavity of the workbench, an adjusting structure is arranged in the clamping assembly, the clamping assembly comprises a connecting rod, and the connecting rod is connected with the detection mechanism. The outer side of the connecting rod is connected with the interior of the workbench. The movable frame and the clamping block are arranged, the tooth block, the clamping block and the movable frame are driven to move downwards by pressing the pressing rod, then the tooth block is separated from the teeth, fixation of the pressing rod and the movable plate is relieved, then the pressing rod is pulled, the clamping block is moved to a proper position, the driving motor is started, and the movable plate is driven to move on the outer surface of the connecting rod through the double-threaded rod. And the adjusted clamping blocks are driven to fix the Bluetooth modules with different sizes, so that the Bluetooth modules with different sizes can be conveniently fixed, and the situation that the accuracy is affected due to unstable fixation of the Bluetooth modules during testing is prevented.

This invention discloses a precision testing device for planetary roller screw pairs, including a testing platform with symmetrically mounted fixed plates on its top. A servo motor is fixedly mounted on one side of one of the fixed plates. The device also includes two sets of support rods symmetrically mounted below the two fixed plates, and a positioning assembly positioned between the two fixed plates. The positioning assembly includes two movable frames and limiting components symmetrically positioned on both sides of the two movable frames. This allows for easy switching between different sized positioning plates when dealing with different types of planetary roller screw pairs, facilitating reliable positioning of the nut or screw according to the type of planetary roller screw pair. Furthermore, after switching, when positioning a reverse planetary roller screw pair, multi-point positioning of the screw in the pair can be quickly achieved, facilitating the movement of the screw in the reverse planetary roller screw pair while preventing rotation during screw movement, thus improving testing accuracy.

The utility model provides an FPC thrust test fixture, which comprises a base station, a test assembly arranged on one side of the top of the base station and a fixed assembly arranged on one side of the top of the base station far away from the test assembly, and is characterized in that the test assembly comprises a bottom plate arranged on the base station, a sliding structure arranged on the bottom plate and a thruster structure connected to the sliding structure; the sliding structure comprises a sliding rail arranged on the bottom plate, a lead screw arranged on the bottom plate and a driving structure arranged at the end, away from the fixing assembly, of the lead screw, a sliding component is slidably arranged on the sliding rail, a nut seat is in threaded connection with the lead screw, and a sliding plate is connected to the top of the nut seat and the top of the sliding component. The thruster structure is connected to the top of the sliding plate in a threaded mode and comprises a thruster body connected to the top of the sliding plate in a threaded mode and a pushing head structure connected to the output end of the thruster body in a threaded mode. The pushing head structure comprises a connecting part in threaded connection with the output end of the thruster body and an abutting part connected to the side, away from the thruster body, of the connecting part.

The utility model discloses a kind of millimeter wave radar angle adjusting devices, including U-shaped frame and rotating shell, the rotating shell one side outer wall is fixedly connected with rotating part, the one side fixedly connected with rotating shaft of rotating part, and rotating shaft is rotatably connected with U-shaped frame, the top of rotating shaft passes through U-shaped frame and is fixedly connected with limit ring, limit ring is fixed between U-shaped frame by connecting assembly, the cavity of rotating shell is movably connected with connecting shaft, connecting shaft is fixedly connected with mounting block, and millimeter wave radar body is fixed with mounting block, the one end fixedly connected with first tooth block of connecting shaft, the utility model not only can make the angle of millimeter wave radar body be adjusted multidirectionally, and can make the position after adjustment keep stable, still can avoid second tooth block to produce rotation in horizontal movement process by guide rod.

This utility model relates to the field of food testing equipment technology, and discloses a food testing box for walnut milk production with a scraping structure. The box includes a body, a liquid level window fixedly provided on the surface of the body, a liquid level gauge fixedly provided on one side of the liquid level window, a scraper slidably provided inside the body, a silicone ring engaging with the surface of the scraper, a buckle hinged to the top of the body, and a lid engaging with the top of the body. A retainer is fixedly provided on the surface of the lid to engage with the buckle. The box can store walnut milk samples, and the liquid level can be observed through the liquid level window and gauge. The lid can be engaged with the buckle and retainer, allowing the scraper to be positioned inside the box. The silicone ring seals the scraper within the box, facilitating easy transport of the box, preventing sample spillage, and preventing sample contamination. A support assembly provides support for the box.

The application discloses a kind of torsional endurance test machines of automobile clutch driven disc assembly, belong to automobile clutch driven disc assembly testing machine technical field, the present application includes frame, the upper surface of the frame is fixedly installed with driving module, and the output end of driving module is fixedly installed with output shaft, and slidingly arranged with moving seat on frame, simultaneously fixedly installed with spline shaft on moving seat, the end of the output shaft is fixedly installed with positioning plate, and the outside of positioning plate is provided with the quick locking member for fixing from driven disc friction disc body, and the outside of positioning plate is provided with pressing plate.The torsional endurance test machine of automobile clutch driven disc assembly can quickly, high-precision locking clutch driven disc assembly, and can be self-adapting adjustment positioning by centrifugal force, while realizing protection, ensure the effective heat dissipation of spring piece, effectively ensure test data precision.

The application discloses a kind of auxiliary devices for semen collection, it is related to the technical field of male medical examination, including disposable collection cylinder, the rear side of disposable collection cylinder is provided with triangular plate, the left and right sides of triangular plate are provided with adjustable auxiliary mechanism, the top of disposable collection cylinder is provided with sound blocking mechanism, the rear side of triangular plate is symmetrically provided with opening sleeve plate left and right, disposable collection cylinder can quickly restore to vertical state in clamped state after semen collection is completed, on the one hand, compared with the current artificial hand-held disposable collection cylinder semen collection mode, the structure used in the present scheme can release the hands of patient during semen collection, to facilitate better semen collection, on the other hand, after semen collection is completed, disposable collection cylinder can be quickly restored to vertical state, so that the semen in disposable collection cylinder can be prevented from leaking to the maximum extent.

This utility model relates to the field of copper-aluminum busbar welding technology and discloses a copper-aluminum busbar welding clamping device. A housing is fixedly connected to the upper surface of the worktable, and a cylinder is fixedly connected to the top outer wall of the housing. One end of the cylinder's output shaft passes through the top inner wall of the housing and is fixedly connected to a frame. An integrated automatic brazing machine body is housed inside the frame. A base is fixedly connected to the middle of the upper surface of the worktable. Alternating openings are provided on both sides of the upper surface of the worktable and on both sides of the base. Limiting sliding frames are provided in both of the alternating openings. This utility model, through the stepped clamping blocks and the threaded rod rotatably connected to them, can control the clamping force during the clamping process of the copper-aluminum busbar, avoiding excessive clamping and damage to the copper-aluminum busbar. Furthermore, due to the stepped clamping blocks, it can clamp copper-aluminum busbars of different thicknesses.

This invention discloses a dual-platform automated laser cutting machine, relating to the field of cutting technology. It includes a chassis with a base fixedly installed at the bottom. A linear motor is fixedly installed at the top of the inner wall of the chassis, a first processing table is fixedly installed at the bottom of the inner wall, and a second processing table is fixedly installed at the bottom of the inner wall. A protective device is installed on the inner wall of the chassis. The protective device includes a support frame, a laser cutting machine body, a cooling device, a hollow column, a hollow rod, a water inlet, a sealing plate, a pneumatic cylinder, and a connecting pipe. The linear motor moves the laser cutting machine body, which then laser-cuts the material. The support frame is fixedly installed on the linear motor, the cooling device is fixedly installed at the bottom of the support frame, and the hollow column is fixedly installed on the inner wall of the chassis to prevent insufficient processing time between the laser beam and the material due to excessively fast movement of the laser cutting machine body.

The invention discloses an automatic upper pull rod dismounting device for a large injection machine. The automatic upper pull rod dismounting device comprises an automatic dismounting assembly and an auxiliary bearing assembly. The automatic dismounting assembly comprises a telescopic rod and a guide rail, the fixed end of the telescopic rod and the guide rail are both relatively fixed to the fixed mold plate, the movable end of the telescopic rod is slidably connected to the guide rail, the telescopic rod and the guide rail are both parallel to the upper pull rod body, and the other end of the upper pull rod body is fixedly connected with the movable end of the telescopic rod. The auxiliary bearing assembly comprises a bearing piece and a lifting mechanism, the lifting mechanism is used for driving the bearing piece to ascend and descend, and the lifting mechanism is fixedly connected with the movable end of the telescopic rod. The auxiliary bearing assembly and the automatic dismounting assembly jointly carry out auxiliary bearing on the upper pull rod body, the automatic dismounting assembly drives the upper pull rod body and the auxiliary bearing assembly to jointly slide, the upper pull rod body moves in the state that the upper pull rod body is borne by the auxiliary bearing assembly, and abrasion of the upper pull rod body and a fixed mold plate is reduced.

The invention discloses a pocket-size outdoor switch and control mechanism with a grounding function. The outdoor switch and control mechanism with the grounding function comprises a switch body with a grounding function, a transmission part and an electric control box. The invention discloses an outdoor grounding switch and a control mechanism. A switch body is composed of a machine base part, a conductive part and a grounding part. The base part is composed of a base, a main shaft, a middle swing rod and a grounding part. A transmission component is in butt joint with a self-made energy-saving mechanical ball distance-limiting safety coupler at an upper port of a control box below through a coupler and a transmission rod, namely a double-end cross-shaped spline telescopic universal joint, wherein the constant-angular-velocity bevel gear pair is arranged at the output shaft end of a main shaft of a switch body and has a 90-degree intersection angle; and the self-made energy-saving mechanical ball distance-limiting safety coupler is arranged at the upper port of the control box below. The electric control box outputs torque of 12.Nm through a direct current torque motor, speed reduction is carried out through a 1: 4 bevel gear, and a main shaft in the electric control box is used for controlling the outdoor disconnecting switch which is 3 m high above to be switched off / switched on at the speed of 4 revolutions per minute and the torque of 48 N.m. All parts reach the interchange standard, and the switch is produced nationwide, is low in energy consumption, is environment-friendly, and can meet the urgent demands of metros, light rails, rails, intercities and the like in urban rails in China at present for high and medium voltage energy-saving outdoor isolation switches.

The utility model discloses a mixed specimen cup for sample collection, which belongs to the field of medical detection, and comprises a cup body and a cup cover matched with the open end of the cup body, the cup cover is provided with a liquid storage cabin extending into the cup body, the lower end of the liquid storage cabin is open, the open part is sealed by a sealing film, a puncture part is arranged in the liquid storage cabin, and the lower end of the liquid storage cabin is connected with the puncture part. A sharp part is arranged at the lower end of the puncture part, the upper end of the puncture part is connected with a pressing part, and the pressing part is arranged on the cup cover. The utility model aims to provide a mixed specimen cup for sample collection, which can improve the detection efficiency.

The utility model relates to a floor sweeping robot injection mould processing technical field especially, a kind of floor sweeping robot processing injection mould, including lower fixed plate and upper fixed plate, the upper end of lower fixed plate is equipped with two die feet, the upper end of die foot is provided with lower mould, the lower end of upper fixed plate is connected with upper mould, the end corresponding to the upper mould and lower mould is embedded, the middle part of lower mould is provided with die groove, the lower end of lower mould is equidistantly provided with bottom groove, the inner chamber top of bottom groove is provided with top groove, the inner chamber of bottom groove is provided with stripping mechanism, the top of stripping mechanism is penetrated top groove and is inserted with die groove, compared with prior art, the structure design of the utility model is reasonable, and effectively improve the effect of stripping, avoid the traditional needle ejecting product to cause because needle and product's contact area is small and lead to damage to product when ejecting.

The utility model discloses a kind of power collection line distributed protection devices, including warning component and temperature detection component, the temperature detection component includes lower arc shell and upper arc shell, one end between lower arc shell and upper arc shell is rotatably connected by pin shaft, the one end of lower arc shell and the one end of upper arc shell are fixedly connected with connecting block, connecting bolt is inserted between two connecting blocks, the one end of connecting bolt is threadedly connected with nut, the circumference of lower arc shell and upper arc shell is equipped with two air vents, the inside wall of the two sides of lower arc shell and upper arc shell is adhesively connected with antiskid pad, and multiple ventilation grooves are provided on antiskid pad.The utility model is fixedly wrapped in the fiber-optic temperature measuring point of cable by lower arc shell and upper arc shell, and temperature sensor is contacted with the fiber-optic temperature measuring point of cable, this kind of mode avoids overwrap, thereby avoiding heat accumulation at temperature measuring point, and improving the accuracy of cable temperature detection.

The invention provides a pile leg assembly for a sideslip test, a pile tip bending moment calculation method and a pile leg sideslip simulation test device. The pile leg assembly comprises a pile leg main body, various pile shoes and a rotary connector. The pile shoe is detachably connected to the bottom of the pile leg body. The rotary connector comprises a first connecting piece, a second connecting piece and a locking connecting piece, the second connecting piece is connected with the pile leg body, the locking connecting piece is arranged between the first connecting piece and the second connecting piece, and the first connecting piece is connected with the actuator. Before a test, the locking connecting piece is located at the unlocking position, the first connecting piece and the second connecting piece are separated, and the direction in which the pile leg body adheres to the bending moment strain gauge is rotated to the direction in which the pile leg actually bends to the maximum extent. And then the locking connecting piece is switched to the locking position. According to the pile leg assembly for the sideslip test, after the pile leg assembly is connected to the actuator, the pile leg body can be rotated to the position where the direction where the bending moment strain gauge is pasted is consistent with the actual maximum bending direction of the pile leg.

The utility model discloses a kind of water battery charging plug inner signal plug core correcting device, the utility model relates to plug inner signal plug core correcting technical field, including bottom plate, further include: auxiliary correction mechanism, the auxiliary correction mechanism is set to the top of bottom plate, for connecting replacement correction instrument assembly, and auxiliary correction instrument assembly is moved to water battery charging plug inner signal plug core correction for pushing, fixed component, set to the top of bottom plate, for the fixation of water battery charging plug, this water battery charging plug inner signal plug core correcting device is provided with auxiliary correction mechanism, by auxiliary correction mechanism, correction device can push plug and be corrected, make the plug core of plug and the jack hole of socket better match, ensure the good contact between plug and socket, and connecting component can be used to replace correction ware, make the replacement process of correction ware more simple and fast, reduce the complex operation and time cost in replacement process.

The utility model discloses a kind of equipment for the water-tight test of automobile lamps, it is related to automobile lamps detection technical field, including workbench, protective pad is fixedly installed on workbench, adjusting unit and clamping unit, adjusting unit is fixedly installed with sealing unit. Advantageous effect lies in the collaborative sealing of air bag and movable rod, in combination with the real-time regulation and control of air pressure sensor, ensure sealing effect, effectively reduce the influence of leakage on detection result, when detecting, the pressure change in the car lamp is compared with the reference pressure of contrast bin in real time, if the difference between the two exceeds the set threshold, determine that there is leakage in car lamp, reduce the interference of temperature fluctuation to pressure detection through temperature detection mechanism, can identify small leakage, reduce the error of detection, through vibration motor to vibrate car lamp on workbench, simulate the bump, vibration and so on in vehicle driving, stimulate the gap leakage caused by vibration, ensure the accuracy of detection result.

The invention relates to the technical field of alcohol concentration meters, and discloses alcohol concentration meter accuracy detection equipment and method.The alcohol concentration meter accuracy detection equipment comprises a container, a notch is formed in the side wall of the container, transparent glass is fixedly connected into the notch, a milliliter graduated scale is arranged on the side wall of the transparent glass, and a mixing assembly is arranged in the container; the mixing assembly comprises a motor, the motor is fixedly connected to the bottom surface of the container, the output end of the motor penetrates through and is rotatably connected to the inner bottom surface of the container, the output end of the motor is fixedly connected with a disc, the side wall of the disc is fixedly connected with a plurality of groups of supporting plates which are distributed in an array, and the surfaces of the supporting plates are fixedly connected with vertical rods. According to the invention, the cross rod transmits the rotary motion to the stirring plate through the sleeve, and liquid passes through the middle of the strip-shaped hole, so that the stirring plate is allowed to swing, the stirring effect is improved, and water and alcohol are prevented from forming different layers to influence the measurement accuracy.

The utility model discloses a self-calibration timing circuit, a timing device and an ignition device, and relates to the field of timing, the self-calibration timing circuit comprises a calibration circuit, an output end is connected with a clock end of a calibrated circuit, and the calibration circuit is used for outputting a clock signal to the calibrated circuit; the output end of the calibrated circuit is connected with the input end of the ignition device, and the calibrated circuit is used for timing based on the clock signal; and the ignition device is used for outputting detonation when the ignition signal is received through the input end of the ignition device at the end of timing. The calibration circuit and the calibrated circuit are separately arranged, the calibration circuit does not participate in actual control, the high overload circuit is prevented from influencing the timing accuracy, the calibration circuit outputs the time to the calibrated circuit, the ignition device is further controlled, and the timing can be more accurate.

The utility model discloses a kind of full-automatic milling machines of wind power blade blade root end surface, including base and support arm being vertically arranged on base, first steering assembly is equipped on the both sides of base, first steering assembly controls support arm to rotate along horizontal direction;Horizontal sliding component is equipped between base and support arm, second steering assembly is equipped on the side of support arm, second steering assembly connects vertical sliding component and controls vertical sliding component to rotate along vertical direction, milling positioning assembly is equipped on vertical sliding component.The milling machine can realize high-precision adjustment of horizontal and vertical direction, ensure the milling accuracy of milling positioning assembly;Meanwhile, by setting steering assembly and auxiliary connecting structure, milling positioning assembly is provided with stable support, so that milling positioning assembly reduces shaking in milling process, guarantees milling quality;It also has obstacle avoidance function, improves safety.

The application relates to the technical field of dynamic target simulation, and discloses a dynamic target simulation device, which comprises a simulation box and a product support, a maintenance door is hinged to one side of the simulation box, and a simulation light source assembly, an off-axis parabolic reflector, a secondary mirror one, a secondary mirror two and a light source trap assembly are arranged in the simulation box. By arranging the quick-change assembly, an operator only needs to loosen front bolts and rear bolts, remove the baffle to make the T-shaped plate separate from the bottom gap of the U-shaped rail, slide the mounting plate together with the light source output device out of the butt joint groove, take out the mounting plate, replace a new light source output device, slide the U-shaped rail into the butt joint groove, make the T-shaped plate embed into the bottom gap of the U-shaped rail, tighten the bolts to complete locking, realize quick positioning through the sliding cooperation of the butt joint groove and the U-shaped rail, realize vertical locking through the clamping of the T-shaped plate and the bottom gap, and precise light path calibration is not needed after each replacement.

The utility model provides a kind of float ball liquid level switch, it is related to liquid level control switch technology, comprising: float ball, its surface is connected with straight rod;Connecting rod, its front end is coaxially connected with straight rod, its rear end is equipped with first magnetic block, and first bolt passage is passed through on connecting rod;Interface seat, its front end is inwardly provided with containing bin, two second bolt passages are passed through on interface seat, same locating pin is rotatably provided in two second bolt passages, connecting rod is located in containing bin, and locating pin is rotatably provided in first bolt passage;Containing pipe, coaxially connected in interface seat rear end, containing pipe is equipped with touch piece, touch piece front end is located at interface seat rear end and is connected with second magnetic block, touch piece side is connected with rotating rod, containing pipe rear end is equipped with control block, and two contact seats are equipped in control block lower end;Control mechanism, connected in containing pipe rear end.The utility model can conveniently replace float ball, and improve service life and the accuracy of liquid level detection, with strong practicality.

The application discloses a high-altitude environment monitoring robot, and relates to the technical field of environment monitoring.The high-altitude environment monitoring robot comprises a main body mechanism, a frame, a display module, a data processing module and a wireless transmission module.The frame is fixedly connected with the display module, the data processing module and the wireless transmission module.The top of the frame is fixedly connected with a first sampling head.The two sides of the frame are fixedly connected with second sampling heads.The two sides of the frame are provided with cleaning mechanisms.The high-altitude environment monitoring robot is provided with a wiping unit.Under the action of a cylinder, the transmission arms on the two sides are moved inward, and a servo motor is started to drive a threaded rod to rotate in a forward direction, so as to drive a threaded block and the cylinder to move from the side close to the frame to the side of the second sampling head, and a sponge wiping block is used to wipe the water droplets on the surface of the second sampling head, so that the water droplets on the surface of the second sampling head are wiped off, and the accuracy of humidity monitoring is not affected by the frequent contact of the sampling head with the water droplets.

The utility model discloses a kind of boiler combustion pressure early warning devices, it is related to pressure early warning device technical field, including shell and display screen;Shell: top surface is hinged with shell cover, the front side of shell cover is fixed with display screen, the left and right sides of shell are evenly provided with heat dissipation hole, processor is fixed in the inside of shell, the bottom surface of shell is equipped with adjusting unit, the inside of adjusting unit is respectively installed with multispectral flame detector and pressure sensor;Wherein, it further includes controller, the boiler combustion pressure early warning device, flexible telescopic positioning of detector is realized by adjustable winding shaft structure, adapt to different monitoring needs;Protective unit is used to protect sensor cable, ensure stable operation under harsh environment in combination with heat dissipation hole and dust screen;Integrated pressure and flame double monitoring function, data are analyzed by processor and are linked with audible and visual alarm, wireless transmission module, realize local and remote double early warning.

The utility model relates to battery detection field especially, and it is a kind of battery tray.The battery tray provided by the utility model includes tray main body, inner lining subassembly and multiple electric conductors, and the inner lining subassembly is provided with multiple limiting spaces for placing battery, and the limiting space is used for placing battery, one electric conductor is correspondingly arranged with at least one limiting space, that is, one electric conductor is correspondingly arranged with at least one battery placed in the limiting space, one electric conductor corresponds at least one battery, when alternating current is passed into battery, the alternating current with opposite direction is simultaneously passed into the corresponding electric conductor, since the current size in electric conductor is same with battery, the eddy current generated by electric conductor and the eddy current generated by corresponding battery mutually offset, that is, the measurement result accuracy of measurement probe can be avoided to influence, and the accuracy of detection result is further improved.

The utility model discloses an inspection device for a steel bar truss, and belongs to the field of steel bar truss inspection. The inspection device for the steel bar truss comprises a base, a first sliding block is arranged in the middle of one end of the base, a second sliding block is arranged on one side of the outside of the first sliding block, and a laser head is arranged at the front end of the second sliding block. According to the utility model, the problem that a gap exists between the lowermost end of the truss and the placing position of the existing truss height measuring device, so that the measurement accuracy is influenced is solved, and the highest point and the lowest point of the steel bar truss can be detected through the supporting of the supporting sheet and the detection of the laser head; in the detection process, the pointer can be in contact with the sliding frame to identify the highest position of the steel bar truss, the pointer can identify the lowest position of the steel bar truss along with longitudinal movement of the laser head, a user can directly know the highest point and the distance between the lowest points through the scale, and the detection accuracy is improved.

The utility model discloses a connecting structure of bimetallic strips, which relates to the technical field of bimetallic strips, and comprises an outer sleeve metal sheet, the front side and the rear side of the outer sleeve metal sheet are respectively provided with a front positioning groove and a rear positioning groove, the top of the outer sleeve metal sheet is provided with a middle groove, the inner side of the middle groove is connected with an assembling plate in a clamping manner, and the assembling plate is provided with a clamping groove. The bottom of the assembly plate is fixedly connected with an embedded metal sheet through a first screw, and a third through groove is formed in the middle of the side face of the outer sleeve metal sheet. And the side surface of the embedded metal sheet is fixedly connected with the connecting column II on the inner side of the outer sleeve metal sheet through the screw II, so that the outer sleeve metal sheet and the embedded metal sheet can be quickly assembled and connected, the connecting gap between the assemblies is small, and meanwhile, the influence on the triggering accuracy when the temperature is too high is also avoided.

This utility model belongs to the field of deep grooving technology and discloses an extended tool shank and a tool. The extended tool shank includes a main body, a locking member, and a positioning member. The main body is elongated and has a locking position where the tool shank can pass. The main body has a locking hole, and the locking member is screwed to the main body, configured to pass through the locking hole and press the tool shank against the main body. The main body has a positioning hole, and the tool shank has an alignment hole. When the tool shank is in the locked position, the positioning member can pass through the positioning hole and extend into the alignment hole. The elongated main body extends the tool shank, enabling the tool to perform deep grooving operations. When the tool shank is in the locked position, the positioning member can pass through the positioning hole and extend into the alignment hole to prevent the tool shank from slipping under cutting resistance, ensuring operational accuracy. The locking member screwed to the main body passes through the locking hole and presses the tool shank against the main body.

The invention relates to the technical field of protection pipe machining, in particular to MPP cable protection pipe production and machining equipment and a using method, the MPP cable protection pipe production and machining equipment comprises an in-pipe self-adaptive grinding unit, an outer wall magnetic control positioning unit and a pipe supporting and driving unit, and a central control unit can be further configured to be used for linkage regulation and control of all the units. According to the MPP cable protection pipe production and machining equipment and the using method, the thickness difference of the pipe wall can be automatically recognized, and self-adaptive grinding is achieved, dynamic balance is formed by means of magnetic coupling acting force and pre-tightening force of a mechanical elastic pre-tightening assembly, when the pipe wall thickness is increased, magnetic coupling magnetic force is weakened, the pre-tightening force automatically pushes a grinding machine to stretch out and draw back to be attached to the pipe wall side, and the grinding effect is achieved. When the wall thickness of the pipe is reduced, the magnetic coupling magnetic force is enhanced, the grinding machine is driven to reset reversely, the matched grinding attaching force is kept all the time, the requirements for different wall thicknesses can be precisely met without manual intervention, the problems that existing equipment is poor in grinding adaptability and needs manual adjustment are thoroughly solved, and the grinding precision and efficiency are greatly improved.