121results about "Investigating machinability" patented technology

The application discloses a kind of full life cycle quality monitoring systems of numerical control cutter, including cutter performance evaluation module, cutter factory quality detection module and cutter state monitoring module;The cutter performance evaluation module includes cutting force evaluation module, machining quality evaluation module, life evaluation module and stability evaluation module;The cutter state monitoring module includes data acquisition and transmission module, data preprocessing module, wear prediction model training module and state monitoring module.The application can find problems in time in each link of cutter production and use, and can find cutter with manufacturing defects in time in the process of cutter manufacturing.In the use process of cutter, dullness, chipping and other conditions of cutter can be found in time, to eliminate the security risks caused by it, and improve the quality of product.The application integrates the data generated in each link into database, maximizes the utilization rate of data in each link, and reduces the waste of useful data.

This invention discloses a method and device for measuring the sharpness of a disc cutter. The method calculates the cutting attenuation coefficient of the disc cutter's edge by recording the small wedge angle radius before and after cutting the material. It also establishes curves showing the change in force and time experienced by the disc cutter as it moves along the X and Y axes while cutting the material, dividing the cutting process into three stages. The sharpness of the disc cutter is then calculated based on the work done by the disc cutter in each stage, the small wedge angle radius before and after cutting, the cutting time, the cutting length, and the hardness of the material. Compared to traditional static cutting tests, this dynamic cutting test method can more accurately obtain the sharpness of the disc cutter.

The utility model discloses an anastomat cutting knife detection device which comprises a vertical driving assembly, a transverse driving assembly, a cutting knife testing assembly and a suture line clamp, the cutting knife testing assembly comprises a pressure sensor and a connector unit used for installing an anastomat cutting knife, and the connector unit is assembled at the lifting end of the vertical driving assembly. The suture line clamp comprises a balancing weight, a plurality of threading columns for a suture line to penetrate through and a pressing driver for pressing the suture line, and the transverse driving assembly drives the suture line clamp to move, so that one threading column corresponds to the connector unit; the vertical driving assembly drives the anastomat cutting knife on the connector unit to cut the suture line on the suture line clamp, and the cutting force borne by the anastomat cutting knife is measured through the pressure sensor, so that a manual detection mode can be replaced, and the sharpness performance of the anastomat cutting knife can be accurately, conveniently and reliably detected.

The invention provides alloy blade measuring equipment and a measuring method, the alloy blade measuring equipment comprises a friction mark device used for positioning the deformation protruding position of an alloy blade and a mobile measuring device used for detecting the deformation amount of the alloy blade, and the alloy blade is attached to the friction mark device to rotate and highlights a friction mark. A plurality of identification point positions are distributed on the alloy blade along the friction mark in an outward expanding manner; the mobile measuring device comprises a positioning frame group, a measuring frame assembled on the positioning frame group in a sliding manner, and a measuring assembly assembled on the measuring frame in a sliding manner. According to the method and the device, data acquisition is carried out on the friction impression in multiple directions by taking the identification point position as a base point through the measurement assembly, complete deformation data is obtained, and accurate data support is provided; in addition, the invention further provides a measuring method of the alloy blade, and by means of the method, the qualified rate of finished products can be increased, cost is reduced, and efficiency is improved by collecting data and appointing the product improvement direction and the process route.

The utility model provides a coupling confining pressure loading abrasive jet assisted TBM (Tunnel Boring Machine) rock breaking test device, which comprises: an abrasive jet mechanism, the abrasive jet mechanism comprises a pressurizing part, the pressurizing part is connected with a slurry supply part, and the pressurizing part is connected with a jet nozzle; the confining pressure loading mechanism is internally provided with a loading seat, and a rock sample is placed on the loading seat; and the hobbing cutter penetration mechanism is mounted on the confining pressure loading mechanism. By additionally arranging the abrasive jet mechanism, the TBM rock breaking test under the assistance of abrasive jet can be realized; and by arranging the confining pressure loading mechanism, the confining pressure applied to the periphery of the rock sample can be adjusted, and then the influence on the abrasive jet assisted TBM rock breaking test under different confining pressure conditions is studied.

This invention provides a PDC single-tooth rock-breaking experimental device and a method for analyzing the rock-breaking mechanism. The experimental device includes a rock-breaking device body, a PDC tooth cutting depth adjustment mechanism, a cutting speed adjustment mechanism, and a cutting force measurement mechanism. The cutting speed adjustment mechanism can adjust the cutting speed of the rock sample; the rock-breaking device body is used to fix and install the cutting depth adjustment mechanism; the cutting depth adjustment mechanism can clamp the PDC tooth and precisely control its inclination angle and cutting depth; the cutting force measurement mechanism can monitor the cutting force on the rock sample. The method includes the following steps: setting parameters such as cutting depth, cutting speed, and inclination angle; monitoring the cutting force and recording the dynamic rock crushing process; sieving and collecting rock fragments, determining the mass fraction of different groups of rock fragments, and preliminarily determining the ductile-brittle crushing mode of the rock based on the distribution pattern of the rock fragments. This invention has the advantages of precisely controlling the cutting depth, PDC tooth inclination angle, and cutting speed.

The utility model provides a pneumatic tool for a cutting experiment, which comprises an angle grinder which comprises an angle grinder body, a handle and a transmission mechanism extending out of the bottom of the angle grinder body; the fixing ring is arranged on the outer side of the transmission mechanism in a sleeving manner; the fixing plate is mounted below the fixing ring through the fixing ring; the cam is arranged below the fixed plate and is connected with the transmission mechanism; the cam follower, the blade mounting plate and the blade are sequentially connected with the cam; under the driving of the transmission mechanism, the cam rotates, and then the blade is driven to do reciprocating cutting motion. According to the utility model, the structure of a common pneumatic tool is modified, the interaction effect between a blade and a cut object during manual cutting of an operator is simulated, huge physical output caused by manual cutting is avoided, and even the glue separation work between the inner and outer plates of the vehicle door can be completed by only one operator; and the working efficiency is greatly improved, and the labor cost is reduced.

The method comprises the following steps: a pressing head (42) for pressing a workpiece (W) is assembled on a main shaft (20); pressing the ram (42) into the workpiece (W) by using feeding devices (22, 26, 34) of the machine tool (10); the press-in load (L) and the press-in depth (h) are measured in real time; a press-in load coefficient (C) that is a coefficient when functionally approximating the press-in load (L) by the press-in depth (h) is calculated in real time; when the rate of change of the press-in load coefficient (C) with respect to the press-in depth (h) becomes a value sufficiently close to 0 from a negative value, press-in of the indenter (42) into the workpiece (W) is stopped. And multiplying the press-in depth (h) at the time when press-in is stopped by a depth conversion constant to calculate the depth (Z) of the work-deteriorated layer.

The invention discloses wig shearing detection test equipment, and belongs to the technical field of electric hair cutter detection, the wig shearing detection test equipment comprises a rack, an experimental wig sample and an electric hair cutter, a bottom plate is fixed at the bottom of a working cavity of the rack, an electric push rod is mounted at the top end of the bottom plate, and the output end of the electric push rod faces upwards and is fixedly provided with a supporting plate; a wig fixing assembly is arranged at the top end of the supporting plate, a connecting plate is arranged at the top end of the bottom plate, a clamping assembly is connected to the connecting plate, an adjusting and moving assembly is arranged at the top end of the bottom plate, and a visual inspection assembly is arranged on one side of the supporting plate; the adjusting and moving assembly drives the electric hair cutter to complete linear motion according to a set speed, so that the electric hair cutter performs a cutting test on an experimental wig sample, the visual detection assembly automatically shoots an image after cutting is completed, the percentage of the wig remaining rate is calculated through an image processing algorithm, meanwhile, the camera records an AVI format video in the whole process, and the visual detection assembly detects the wig remaining rate. The whole test is automatically operated, and the method has remarkable technical advancement and market application value.

The present application relates to rock breaking test device technical field, disclose a kind of TBM rock breaking test device, including pedestal, bracing plate one and bracing plate two, the bracing plate one and the bracing plate two are respectively fixedly installed in the pedestal top end two sides;Still include displacement mechanism, the displacement mechanism includes multiple groups of hydraulic rod two fixedly in the bracing plate one inner side, and multiple groups of hydraulic rod two inner side are fixedly connected with bracing plate three, and the bracing plate three is with pedestal upper end horizontal sliding connection;Angle adjusting mechanism, the angle adjusting mechanism includes multiple groups of circumferentially in the bracing plate three inner wall sliding groove mouth.The present application can be under the action of angle adjusting mechanism, realize the angle change of the cutter at top to rock block sample, and under the action of clamping mechanism, sample is damaged, the data generated by simulation damage are summarized, effectively improve the range of equipment simulation, effectively increase the diversity of data, so that data contrast analysis is more accurate.

The invention relates to a method for realizing service life detection of a sharpening machine cutter. The method comprises the following steps: (1) adopting a split type double-edged cutter structure; (2) sequentially adding special powder metallurgy hard alloy into a blade material, passivating a cutting edge of the cutter, adding a CVD (chemical vapor deposition) composite coating on the surface of the cutter and polishing the whole cutter, so as to complete the modification of the cutter; and (3) determining the service life of the cutter of the sharpening machine by adopting a nano-scratch method through measuring the critical loads on different coatings of the cutter and combining the actual use condition of the same working condition. The invention further relates to a corresponding split type double-edged cutter structure. By adopting the method for detecting the service life of the cutter of the sharpening machine and the corresponding cutter structure, the service life of the cutter can be prolonged, and the cutter does not need to be replaced when the sharpening machine is used for fifty thousand times; and meanwhile, the service life of the sharpening machine cutter can be easily judged by using a nano-scratch method, and field testing is not needed.

The application discloses a cutting tool test system, which comprises a test table, a spraying system, a dust removal chamber, a measurement and control system and a dust suction system. The test table comprises a mounting plate, a test piece box and a plurality of loading drives. The mounting plate is arranged above the test piece box and is used for assembling the cutting tool. The plurality of loading drives are used for driving the relative movement of the mounting plate and the test piece box. The spraying system comprises a spraying pump and a spraying head. The spraying head is directed to the cutting tool. The dust removal chamber comprises a dust removal guide rail, a moving chamber and a dust removal drive. The dust removal guide rail is arranged on the ground. The moving chamber is slidably assembled on the dust removal guide rail. The dust removal drive is connected with the moving chamber. The measurement and control system comprises a camera and a microscope. The dust suction system comprises a dust suction fan and a cloth bag. The inlet of the dust suction fan is communicated with the dust removal chamber. The test system can simulate the cutting working condition. The dust and noise pollution during the test process is small. The test result is accurate.

The utility model relates to the technical field of blade detection, and discloses a food processor cutting blade detection mechanism, which comprises a test mechanism, the test mechanism comprises a sliding motor, the output end of the sliding motor is fixedly connected with a driving wheel, the outside of the driving wheel is meshed with a driven wheel, the outside of the driven wheel is rotatably connected with a fixed column, and the fixed column is fixedly connected with the sliding motor. A rotating plate is rotationally connected to the outer portion, namely the end away from the driven wheel, of the fixing column, and a limiting block is rotationally connected to the outer portion of the rotating plate. According to the device, the sliding motor is started to drive the driving wheel to rotate, the limiting block plays a limiting role, the sliding connecting plate is driven to move on the test cutter, and the first telescopic pressure rod and the second telescopic pressure rod apply pressure downwards, so that the hardness of the cutter is tested, and whether the cutter leaves scratches on the test surface or not can be observed; and the third telescopic pressure rod is responsible for cleaning the test surface, so that subsequent observation of the limiting design is facilitated, and the test stability and accuracy are guaranteed.

The present application relates to the field of shield machine testing equipment, specifically is a kind of shield machine component performance testing equipment, including the base frame of L-shaped structure, the horizontal section of base frame is slidably connected with support plate left and right, its vertical section is rotatably connected with U-shaped frame, U-shaped frame and support plate are provided with pseudo mechanism for impacting and wearing test of cutter on it, limiting mechanism for limiting cutter is arranged on U-shaped frame, the rotating cylinder of the present application is intermittently driven by driving assembly, drives the impact ball at the end of swing rod to rise to set height, by the way of accumulating gravitational potential energy and converting into kinetic energy, impact ball violently impacts cutter surface in the form of free swing, this process highly simulates the instantaneous, high-energy impact working condition of falling stone on cutter blade circle in tunneling, effectively reveals the real damage mode of micro-crack, collapse or structural failure caused by impact load to cutter, significantly improves the pseudo of impact test.

A method is disclosed. The method includes providing a ceramic blade having a thickness and a ceramic cutting edge portion, providing a primary grind having a primary angle to the ceramic cutting edge portion based on a predetermined primary ratio, and providing a micro grind having a micro angle to the ceramic cutting edge portion based on a predetermined micro ratio. The predetermined primary ratio is a predetermined thickness divided by a predetermined primary angle. The predetermined micro ratio is the predetermined thickness divided by a predetermined micro angle. The method includes measuring at least one of the thickness, the primary angle, and the micro angle, and comparing at least one of the measured thickness to the predetermined thickness, the measured primary angle to the predetermined primary angle, and the measured micro angle to the predetermined micro angle.

This invention discloses a material performance testing drive device and testing system. The material performance testing drive device includes a frame, a test frame, a feeding assembly, and a linkage assembly. The frame has a first slide rail and a second slide rail; the test frame is used to clamp the material to be tested and is slidably mounted on the first slide rail; the feeding assembly is used to move the simulated material to the working position and is slidably mounted on the second slide rail; the linkage assembly includes a rotary drive component, a driving gear, and a driven gear. The rotary drive component is mounted on the frame, and its output shaft is fixedly connected to the driving gear. The driving gear is driven by the test frame, and the driven gear is driven by the feeding assembly. This invention achieves intermittent mechanical coupling between a single drive source and the gear transmission structure in either a meshing or disengaging state. Furthermore, the test frame and the feeding assembly are driven by the same rotary drive component, enabling coordinated and synchronous control of the movement of the material to be tested and the feeding of the simulated material.

This invention discloses a method for evaluating the degree of annealing mitigation after ion irradiation of reactor pressure vessel steel, comprising the following steps: obtaining characteristic nanohardness, dislocation loops, cluster number density, and average size before ion irradiation; irradiating a sheet sample with ion and simulating the damage area; obtaining characteristic nanohardness, dislocation loops, cluster number density, and average size after ion irradiation; performing vacuum thermal annealing on the ion-irradiated sheet sample; obtaining characteristic nanohardness, dislocation loops, cluster number density, and average size after vacuum thermal annealing; calculating the contribution of different types of defects to the yield strength increment of the sheet sample at different treatment stages; calculating the performance recovery degree of the sheet sample after vacuum thermal annealing based on defect recovery and nanohardness testing, respectively; evaluating the rationality of temperature selection in the annealing process after irradiation of reactor pressure vessel steel, and calculating the degree of annealing mitigation under this condition.

The invention relates to the technical field of heading machines, in particular to a device for measuring the throwing range of rock and ore crushed materials during impact of a heading drill bit. The device comprises a base frame and a bearing frame fixedly connected to the top of the base frame and used for supporting a rock mass sample, conveying assemblies are arranged on the two sides of the bearing frame correspondingly, baffles used for limiting are arranged on the conveying assemblies, a belt conveyor is arranged on the base frame and located below the rock mass sample, pressure sensors are densely arranged on the baffles, and the pressure sensors are arranged on the belt conveyor. The pressure sensors are connected to a data acquisition system, the data acquisition system is connected with a control system, and the control system is provided with a display screen for displaying the pressed position distribution of the pressure sensors. The baffle used for limiting is arranged and used for guiding broken stones generated by cutting of the tunneling drill bit to enter the conveying assembly under the action of gravity, collecting splashing range information of the broken stones and forming a broken stone splashing area density map, and data reference is provided for improving the angle of the tunneling drill bit.

This invention discloses a method and device for detecting the ultrasonic cutting sharpness of a disc cutter. The method calculates the cutting attenuation coefficient of the disc cutter's cutting edge by recording the small wedge angle radius before and after cutting the material. It also establishes curves showing the change in force magnitude and time as the disc cutter moves along the X and Y axes to cut the material, dividing the cutting process into three stages. The ultrasonic cutting sharpness of the disc cutter is then calculated based on the work done by the disc cutter in these three stages, the small wedge angle radius before and after cutting, the cutting time, the cutting length, the vertical vibration work during the cutting process, the ultrasonic vibration frequency, and the hardness and fracture toughness of the material being cut. This method improves the accuracy of ultrasonic cutting tests and more accurately reflects the ultrasonic cutting sharpness of the disc cutter under ultrasonic vibration conditions.

The utility model discloses a four-ram blowout preventer test tool, which comprises a bottom plate, the bottom plate is provided with a through hole, the lower end of the bottom plate is provided with a plurality of supporting legs, the lower end of the bottom plate is provided with a first test structure, and the test structure comprises a first electric push rod, a connecting plate, a nozzle and a pump body. A water tank is fixedly arranged at the lower end of the bottom plate, and the sealing performance of the blowout preventer is detected through a first test structure; a supporting frame is fixedly arranged at the side end of the bottom plate, a rotating frame is arranged on the supporting frame, a second test structure is arranged on the rotating frame, the second test structure comprises a moving plate, a fixing frame, a second electric push rod and a test rod, the fixing frame is fixedly arranged on the moving plate, the second electric push rod is fixedly arranged on the fixing frame, and the test rod is arranged on the second electric push rod. And the working performance of the shearing blade is tested through the second test structure.

The embodiment of the invention provides a method, equipment and system for detecting the abrasion degree of a cutting component, a medium and a product, and the method comprises the steps that based on a machining test request for a to-be-detected cutting component, machining equipment is controlled to conduct machining treatment on a machining material through the to-be-detected cutting component, and a shot image for the machining material is obtained; and detecting the wear degree of the to-be-detected cutting part based on the shot image to determine a wear degree score corresponding to the to-be-detected cutting part, and outputting a replacement suggestion for the to-be-detected cutting part based on the wear degree score. According to the technical scheme provided by the embodiment of the invention, the to-be-detected cutting part is detected by acquiring the image after the processing material is cut, compared with subjective judgment based on operators, the detection accuracy can be improved, the detection mode does not depend on experience of the operators, the detection threshold of the wear degree of the cutting part is reduced, and the detection efficiency is improved. And the detection applicability is improved to a certain extent.

To provide a technique that can evaluate accuracy in grinding by a plurality of grindstones, using one drill for evaluating thinning.SOLUTION: A drill for evaluating thinning comprises a drill main body; a first thinning part having a groove formed in a spiral shape on an outer peripheral surface of the drill main body, where the groove has a first surface extending from an outer periphery side toward a shaft center and a second surface extending from an end part at the shaft center side of the first surface toward the outer periphery side, on a cross section that is perpendicular to the shaft center of the drill main body; and a second thinning part which has a third surface extending from an end part at an outer periphery side of the second surface toward the opposite side of the first surface and a fourth surface extending from an end part at an outer periphery side of the third surface toward the opposite side of the second surface, on the cross section that is perpendicular to the shaft center of the drill main body. The first thinning part and the second thinning part can perform thinning processing using different types of grindstones. This can evaluate accuracy in grinding by a plurality of grindstones, using one drill for evaluating thinning.SELECTED DRAWING: Figure 2

The invention discloses a high confining pressure visual PDC drill bit rock breaking experiment device and method.The device comprises an environment system, a support system and a rock cutting system, the support system is used for supporting the rock cutting system, and the environment system is used for providing drilling fluid and drilling pressure for the rock cutting system; the rock cutting system comprises a high-pressure sealing cavity and a drill column system, the high-pressure sealing cavity (7) is of a cylinder structure with a hollow hole, the high-pressure sealing cavity is sleeved with a rock peeping device which can move along the peripheral face of the high-pressure sealing cavity and is provided with an annular inner hole, and the rock peeping device and the high-pressure sealing cavity are kept in sliding sealing; a through hole is formed between the wall face of the rock peeping device and the annular inner hole of the rock peeping device to serve as an observation window, and sealing glass is arranged on the observation window. A corresponding method is provided, the confining pressure borne by a rock sample under a deep stratum can be simulated, and the effect of a rock breaking experiment is improved.

The utility model provides a detachable TBM (Tunnel Boring Machine) hobbing cutter penetration rock breaking test device, which comprises a main body frame which comprises a top plate, a middle plate, a bottom plate and a fixed column, the top plate, the middle plate and the bottom plate are detachably installed on the fixing columns, and the middle plate can move between the top plate and the bottom plate in the vertical direction. Four side plates are detachably mounted on the top surface of the middle plate, and a rectangular groove is defined by the four side plates; the rock sample carrying table is arranged in the middle of the rectangular groove, and confining pressure loading mechanisms are arranged on the front, back, left and right peripheries of the rock sample carrying table; and the hobbing cutter penetration mechanism is arranged above the rock sample carrying table. By means of the detachable design, under the condition of transportation, the device can be disassembled into a plurality of assemblies, the effect of facilitating transportation is achieved, after transportation, the device is assembled on site, and the requirement for testing on the engineering site is met.

The invention provides a detection method and related equipment. The detection method comprises the following steps: acquiring a working state of the electric equipment; if the electric equipment is in the cutting state, the working current and the cutting duration of the electric equipment are obtained; and determining the passivation state of the electric equipment based on the working current and the cutting duration. When the electric equipment is in the cutting state, passivation detection is carried out on the electric equipment according to the actually detected working current and cutting duration, the passivation state of the electric equipment can be reflected timely and accurately, a user is reminded to change a new state in time, and therefore the working efficiency of the user is improved, and the safety risk of the user is reduced.

A cutting load calculation device according to the present disclosure chronologically collects a spindle load during a spindle rotation period from the start to the end of spindle rotation, extracts a non-cutting period which is included in the spindle rotation period and in which a spindle speed is constant and cutting is not performed, calculates a representative value of the spindle load during the non-cutting period, and calculates a cutting load by subtracting the representative value from the spindle load during the spindle rotation period.

The utility model relates to the technical field of cutter cutting edge passivation detection, in particular to a detection table for cutter cutting edge passivation detection, which comprises a mounting plate, a vertical plate is welded at the bottom of the mounting plate, a mounting frame is rotatably connected to the opposite side of the vertical plate, and a first motor is connected to the surface of the vertical plate through a bolt. According to the utility model, a to-be-scratched article for detection is placed on the surface of the mounting rack, then the positioning plate is placed on the surface of the to-be-scratched article, then the bolt is rotated to tighten the positioning plate, the to-be-scratched article is positioned through the positioning plate, and after the positioning is completed, the first electric telescopic rod does telescopic motion to drive the movable plate to move up and down, so that the to-be-scratched article is detected. A movable plate drives a fixed plate, a second electric telescopic rod, a connecting plate, a baffle, a pressure sensor, a bearing plate, a fixed clamping plate and a movable clamping plate to move up and down, the fixed clamping plate and the movable clamping plate drive a cutter to move up and down, and a cutting edge of the cutter makes contact with a scratched object.

The invention relates to the technical field of vehicle tire testing, and discloses a special vehicle tire scratch resistance testing method which comprises the steps of mounting a tire to be tested, marking a cutting marking line, applying a radial load, adjusting the position of a cutter, cutting along the marking line, recording a cutting force curve and a peak value and the like. Through a multi-direction and multi-point cutting design, the scratch resistance of the tire sidewall is comprehensively represented, and a scratch resistance index is introduced to quantify the performance of the protective tire. The method can effectively guide the performance verification and identification of the protective tyres, provides technical support for the research and development and application of special vehicle tyres, and ensures the reliability and repeatability of test results.

To analyze the internal state of a sample with high accuracy.SOLUTION: A load acting upon a cutting-edge in a direction X is measured while cutting a sample in the direction X in a first X-direction cutting step following a first Z-direction cutting step. The load acting upon the cutting-edge in the direction X is measured while cutting the sample in the direction X in a second X-direction cutting step following a second Z-direction cutting step. The first round of the second Z-direction cutting step involves cutting the sample to a position downward in the direction Z from the cutting position in the first X-direction cutting step. The second and subsequent rounds of the second Z-direction cutting step involves cutting the sample to a position downward in the direction Z from the cutting position of the second X-direction cutting step carried out immediately before. The internal state of the sample is analyzed on the basis of the load in the direction X measured in the first and second X-direction cutting steps.SELECTED DRAWING: Figure 4

The utility model discloses a medical cutter detection device which comprises an L-shaped plate, an electric push rod is installed on the L-shaped plate, the telescopic end of the electric push rod is connected with a movable plate, a cutter fixing detection part is arranged on the movable plate and comprises four sets of telescopic rods, and a detection plate is installed at the tops of the four sets of telescopic rods. The outer wall of each telescopic rod is sleeved with a compression spring, a pressure sensor is connected between the moving plate and the detection plate, two supports are arranged on the outer side wall of the L-shaped plate, a top plate is connected to the two supports, a U-shaped frame is slidably connected to the lower surface of the top plate, and a wire mounting mechanism is arranged at the bottom of the U-shaped frame. According to the utility model, the U-shaped frame slides back and forth on the bottom wall of the top plate, so that the fishing line can be in contact with different positions of the medical cutter on the cutter fixing and detecting part, the sharpness of different positions of the medical cutter is detected, and the fixed medical cutter does not need to be detached, readjusted in position and detected; and the detection efficiency of the medical cutter is effectively improved.