617 results about "Force direction" patented technology

A folding cart comprises a front frame, a rear frame, a side frame arranged between the front frame and the rear frame and used for expanding and folding, and a release mechanism used for restricting or releasing restriction on the folding of the side frame. A force direction applied to trigger the release mechanism is the same as that applied to fold the side frame, the side frame is driven to fold after the release mechanism releases the restriction on the folding of the side frame. In the folding cart, after an external force is applied to trigger the release mechanism to release the folding restriction, the external force in the same direction can be continuously applied to directly drive the side frame to fold. A user only needs to apply force in a single direction to complete dual tasks of unlocking and folding one after another.

The embodiment of the invention provides a non-directional force sensor control method and system based on real-time force trend prediction, and the method comprises the steps: collecting a real-time force signal sequence generated when a target mechanical device carries out the contact operation, and inputting the real-time force signal sequence into a pre-trained force trend prediction model; and obtaining a force direction trend prediction result output by the force trend prediction model, generating a multi-dimensional force compensation signal according to the matching degree of the force direction trend prediction result and the current closed-loop control parameter, adjusting a proportion-integral-differential coefficient in the current closed-loop control parameter based on the multi-dimensional force compensation signal, generating an updated closed-loop control parameter, and outputting the updated closed-loop control parameter. The updated closed-loop control parameters are input into an actuator of the target mechanical device, and the contact operation track of the target mechanical device is dynamically adjusted through the actuator according to the updated closed-loop control parameters, so that the multi-dimensional force amplitude data output by the non-directional force sensor are converged to a preset force control target interval. The response speed and stability of the force control system can be improved.

The invention discloses a spring with positioning rings and an elastic cushion comprising the spring, the spring comprises a spring body formed by spiral encircling, two ends of the spring body are encircled to form end face rings, the spring body is provided with at least one group of positioning rings, and the positioning rings are encircling rings of the spring body. The positioning ring is approximately parallel to the end face ring or approximately perpendicular to the elastic force direction of the spring body. The distance between the surrounding ring and the stress end is at least one fourth of the length of the spring. At least one group of positioning rings are designed on the spring body, the positioning rings are surrounding rings on the spring body, and the length of the positioning rings is larger than or equal to 1 / 2 of the circumference. The positioning ring is roughly parallel to the end face ring or roughly perpendicular to the elastic force direction of the spring body, in the follow-up assembling process, the connecting waist ring can be positioned, displacement of the connecting waist ring in the using process is effectively prevented, and convenience and stability of connection between the springs are improved.

The invention is suitable for the technical field of pipeline detection, and provides a hydraulic engineering pipeline detection device which comprises a detection table, a sliding frame and a driving frame, the driving frame is fixedly connected to the detection table, the sliding frame is in sliding fit with the detection table, and the hydraulic engineering pipeline detection device further comprises a pressure applying assembly which is arranged on the driving frame and used for conducting pressure detection on a pipeline, the pressure applying assembly comprises a sliding table slidably connected into the driving frame, a motor is installed on the wall face of the sliding table, the output end of the motor is fixedly connected with a gear shaft, and the side, away from the motor, of the gear shaft is fixedly connected with a first supporting plate. The device has the beneficial effects that through the change of the meshing state of the movable toothed pipe and the driven gear and the change of the limiting state of the toothed plate in the first supporting plate by the clamping block, the detection effects of various different stress directions can be switched and achieved according to the detection requirements when the pressure applying assembly applies pressure to the pipeline, and the detection efficiency is improved. And the equipment can realize various different pressure applying functions through a simple mechanical structure.

The invention discloses a roller screw external thread grinding force measuring method. The method comprises the steps that a to-be-measured screw is installed on an external thread grinding machine tool in the mode that the to-be-measured screw is clamped by tips at the two ends of the machine tool; the two mechanical sensors are installed at the center position right facing the lead screw to be measured and face the normal grinding force direction and the tangential grinding force direction respectively; a to-be-measured lead screw clamped by double tips is regarded as a simply supported beam structure of which one end is fixed and hinged and the other end is movable and hinged, a mechanical sensor is regarded as an elastic support, a mechanical model is established, and the relationship among the measurement result of the mechanical sensor, an actual method and tangential grinding force at different grinding positions is obtained; and according to the measurement result of the mechanical sensor, the actual method and the tangential grinding force are obtained by utilizing the relation between the measurement result of the mechanical sensor at different grinding positions and the actual method and the tangential grinding force, and the actual grinding force is obtained after vector superposition. The device has the characteristics of clear and definite measurement principle, accurate and reliable measurement result, simple structure and convenience in assembly.

The invention relates to the technical field of arthroscopic surgery instruments, in particular to a support for a sports medicine arthroscopic surgery, which comprises a support, a lifting platform and a leg fixing mechanism, and the lifting platform locks the height position of the leg fixing mechanism on the support through a limiting bolt; the leg fixing mechanism comprises a fixed frame fixedly connected with the lifting table and a movable frame hinged through a rotating connector. The pull rope is wound around the guide wheel in the sliding rail box to be connected with the shank binding belt, and when the knee joint bends and stretches, the second spring pushes the sliding block to move in a self-adaptive mode; during knee bending, the spring extends to compensate looseness of the pull rope; when the knees stretch, the springs are compressed to absorb redundant tension. The tensile force is always perpendicular to the shank axis through mechanical decomposition, and lateral shearing force is eliminated. A spring dynamic compensation mechanism maintains constant upward effective component force, pulling force direction deviation caused by a traditional fixed fulcrum is avoided, unexpected internal rotation during shank lifting is fundamentally restrained, and knee joint ligaments are protected against abnormal stress damage.

The application provides a robot for detecting a cable of a cable-stayed bridge, comprising a robot body, a guide wheel mechanism arranged on an inner wall of the robot body, two steering control mechanisms arranged symmetrically on an outer wall of the robot body, and a ducted fan connected to the steering control mechanisms and used for controlling a thrust direction of the ducted fan.

The invention provides a stretching detection system based on cloth detection, and relates to the technical field of cloth detection. A graduated scale is fixed on the seat body, a rotating shaft is rotationally arranged on the seat body, a rotating seat A is welded to one end of the left side of the rotating shaft, a clamping block A is rotationally connected to the rotating seat A, a sliding seat A is welded to the top end face of the clamping block A, and a clamping block B is arranged on the sliding seat A in a sliding mode. The clamping block A and the clamping block C flexibly rotate through the rotating seat A and the rotating seat B respectively, when the cloth inclines due to clamping deviation, the two rotating structures can drive the clamping blocks to adjust the direction in a self-adaptive mode in the stretching process, and test errors caused by pulling deviation are effectively counteracted. Meanwhile, the spring rod A and the spring rod B provide elastic support for the clamping block A and the clamping block C respectively, the clamping blocks are kept in a non-inclined state through the elastic force effect in the initial clamping stage, the clamping angle deviation is avoided from the source, and it is ensured that the stress direction of the cloth is consistent with the height required by the test.

The invention relates to the technical field of aero-engines, and discloses a three-class cyclic stress determination method and system for wheel disc life evaluation, and the method comprises the steps: carrying out the stress finite element simulation analysis of a wheel disc under a transient load, so as to obtain the stress history of a key part of the wheel disc at each time point in the same stress direction and at the same temperature; and constructing a stress inflection point course of the key part of the wheel disc according to stress inflection points in the stress course so as to realize determination and extraction of three types of cyclic peak-valley value stress. The method not only considers the influence of transient load, but also ensures that stress analysis is carried out under a unified direction reference through conversion of the direction cosine matrix, so that stress data and life data at different time points can be compared under the same temperature and stress direction conditions, thereby providing support for effective determination of fatigue damage of the wheel disc, and improving the accuracy of fatigue damage determination of the wheel disc. The situation that in the prior art, the stress direction difference is not considered, so that deviation danger exists when fatigue damage of the wheel disc is analyzed according to three kinds of cyclic stress is avoided.

The invention provides a force direction feedback system and method of pneumatic pressure. The system generates a first oscillation signal changing along with air pressure and a second oscillation signal with fixed frequency through a signal conversion module; and the counter counts the cycles of the two paths of oscillation signals. The back noise calibration module samples environment back noise by using a second oscillation signal in a frequency division manner, and eliminates back noise interference in a force count value through a subtractor, so that the problem of detection deviation caused by environment air pressure fluctuation is solved; and the dual-threshold comparison module screens the difference signal through a back noise threshold and an anti-shake threshold, generates a force conversion value, and avoids error output caused by slight fluctuation and shake. The differential operation module processes the force conversion value in combination with the second oscillation signal, the accurate pneumatic force value is output through signal correlation, the pneumatic direction can be distinguished by means of comparison with the fixed reference, and finally accurate and stable feedback of the pneumatic pressure force and direction is achieved.

The utility model discloses a torsion bar elastic restraint spherical steel support which comprises a longitudinal spherical steel support, the longitudinal spherical steel support comprises a fixed support bottom plate located at the bottom, a support bottom basin is arranged on the support bottom plate in a sliding mode, a torsion bar assembly for restraining and limiting is arranged on the support bottom plate, and the longitudinal spherical steel support comprises a longitudinal spherical steel support body. The torsion bar assemblies are arranged on the two opposite side faces of the support bottom basin. Horizontal movement of the pin shaft end of the torsion arm is restrained through the side plate slide way, rigid rotation of the torsion arm is achieved when the support moves, and the torsion arm rotates to drive the torsion rod spring to twist; a connecting rod assembly is removed, so that the structure is more compact; and the direction of external force is parallel to the axis of the fixing bolt, so that the stress of the bolt is optimized, and the bridge support is more suitable for the application scene of the bridge support.

The utility model relates to the technical field of rock mechanical tests, in particular to a true triaxial mechanical test device applied to variable-angle repeated loading and impact disturbance, which comprises a variable-angle transmission mechanism. The variable-angle transmission mechanism comprises a variable-angle transmission main body, variable-angle transmission assemblies symmetrically arranged at the two ends of the variable-angle transmission main body, a box body arranged on the peripheries of the variable-angle transmission main body and the variable-angle transmission assemblies and a force transmission assembly arranged on the box body, and the variable-angle transmission main body comprises a plurality of transmission modules arranged in an array mode in the circumferential direction of the Y axis; the variable-angle transmission assembly comprises a transmission rod and a limiting transmission plate, the limiting transmission plate is arranged in the test piece containing cavity, the transmission rod is fixedly connected with the limiting transmission plate, and when the transmission rod rotates, the limiting transmission plate is driven to rotate so as to drive the variable-angle transmission main body to rotate; therefore, the rock test piece arranged in the test piece accommodating cavity rotates, and the stress direction angle of the roadway in the rock test piece is changed.

The utility model provides a cable tensioning detection device, which relates to the technical field of force measuring devices and comprises a fixed support, a pressure sensor, a fixed pulley support, an elastic reset piece and a fixed pulley. The pressure sensor is fixedly connected with the fixed bracket or the fixed pulley bracket; the fixed pulley support is slidably arranged relative to the fixed support in the stress direction of the pressure sensor. The two ends of the elastic reset piece are connected with the fixed support and the fixed pulley support correspondingly and used for resetting the fixed pulley support after sliding. The fixed pulley is rotationally mounted on the fixed pulley bracket and is used for lapping a cable of which the tension is to be measured; according to the device, the current tension degree condition of the cable can be obtained according to the pressure of the cable on the fixed pulley, whether the liquid level probe is clamped or not is judged according to the tension degree condition of the cable, then the reel is controlled to stop winding or unwinding the cable, and the problem that the cable is stacked and knotted or snapped is avoided.

The invention relates to the field of unmanned aerial vehicles, and discloses a tilting type composite thrust system of a small fixed-wing aircraft, comprising: a physical bearing and power unit module comprising wings and six groups of tilting thrust units on the wings, each group of unit being composed of a turboprop engine and a variable pitch propeller and generating thrust; the thrust vector adjusting module comprises six sets of electric tilting joints and drives the tilting thrust unit to rotate so as to adjust the thrust direction. The state sensing and feedback module is provided with an angle sensor for monitoring the tilting angle in real time; the cooperation and synchronization control module comprises a synchronization controller which is connected with the angle sensor and the electric tilting joints and controls the six sets of electric tilting joints to be converted in batches according to the monitored angle. According to the invention, the integrated electric tilting joint is arranged, and the joint contains a main tilting shaft for wide-angle mode switching and an auxiliary fine tuning shaft for small-range active compensation, so that two adjusting mechanisms with different functions are integrated in a single structure.

The invention provides an amphibious vehicle underwater steering control method and system based on an angle module, and belongs to the technical field of amphibious vehicle control. According to the selection of a driver, the amphibious vehicle is judged to be in normal steering, pivot steering and crab steering in water; when the vehicle normally steers in water, left / right side wheel turning angles are calculated according to the steering wheel turning angle; when the vehicle is in pivot steering in water, the wheels recover to the initial state and are parallel to the vehicle body; when the vehicle is in crab-shaped steering in water, the four corner modules of the vehicle conduct corresponding steering according to steering wheel signal input. In the normal steering mode, according to the calculated steering angle of the vehicle, wheels on one side steer; in the pivot steering mode, wheels on the two sides of the vehicle are controlled to move forwards or backwards; according to the crab steering mode, wheels on the two sides of the vehicle conduct corresponding steering, and the wheels on the two sides are controlled to move forwards or backwards. By controlling the steering angle of the wheels, the thrust direction of the vehicle is changed, and high-precision underwater course control is achieved.

The invention relates to an underwater robot advancing control method and device and a medium, and the method comprises the steps: detecting the sliding state of a crawler belt of a robot, and obtaining operation parameters; controlling a vertical propeller system of the robot according to the sliding state of the track to adjust the ground pressure of the track and stabilize the posture of the robot; in the process of controlling the vertical thruster system, thrust instructions of all vertical thrusters are calculated and output based on the real-time posture and motion state of the robot; according to the operation parameters, dynamic interference generated by the operation tool to the robot is calculated; on the basis of the dynamic interference, compensation thrust and compensation torque which need to be provided by the horizontal propeller system are calculated, and the rotation angle of the horizontal propeller is controlled to be aligned with the thrust direction; and the compensation thrust and the compensation torque are distributed to all the horizontal propellers, and thrust instructions of the corresponding horizontal propellers are output. According to the method, high stability, high trafficability and high operation efficiency of robot advancing are achieved in an uncertain complex seabed environment.

The utility model discloses a cam-driven manipulator which comprises a material taking assembly, a mounting plate, a vertical moving assembly and a horizontal moving assembly, wherein the vertical moving assembly and the horizontal moving assembly are arranged on the two side faces of the mounting plate respectively. The vertical moving assembly comprises a vertical cam, a vertical moving plate and a vertical guide rod for driving the vertical moving plate to lift, and one end of the vertical guide rod is matched with the vertical cam; the horizontal moving assembly is arranged on the vertical moving plate and comprises a horizontal cam, a horizontal swing rod and a horizontal moving plate, and the material taking assembly is connected with the horizontal moving plate and moves in the horizontal direction under the cooperation of the horizontal swing rod and the horizontal cam. According to the structure, the horizontal moving assembly is arranged on the vertical moving plate and ascends and descends along with the vertical guide rod, and the vertical guide rod can ensure that a load ascends and descends stably in the vertical direction, so that the possibility of transverse deviation is reduced, and an accurate guide effect is provided for ascending and descending movement; and the main stress direction of the vertical guide rod is the axial direction, the bearing capacity is high, and the movement stability is good.

The application provides a distance adjusting device for a rolling mill, which comprises a support frame, a support structure, an adjusting structure, a locking structure and two support seats. The support frame comprises a first frame, the support structure is installed inside the first frame, and the two support seats are slidingly installed on the support structure. The adjusting structure comprises a driving mechanism and a plurality of block groups, and the block groups are respectively clamped between the upper support seat and the top of the first frame, between the two support seats, and between the lower support seat and the bottom of the first frame. The driving mechanism is used to drive the block groups to move, the distance between the two support seats is changed by adjusting the embedding depth, and the clamping support of the top and bottom of the support seat is maintained. The locking structure is used to lock the adjusting structure. The position of the support seat is changed by embedding and pushing, so as to adjust the distance between the rolling mills, realize the effect of automatic distance adjustment, improve the efficiency and adjustment accuracy, and maintain the support of the main stress direction of the support seat by the embedding and pushing part.

The invention relates to a novel longitudinal and transverse rotating magnetic conductive attraction expansion device. The invention relates to a novel longitudinal and transverse magnetic conductive attraction expansion device, which comprises a magnetic base body, a first magnetic base, a second magnetic base, a first connecting rod, a second connecting rod and a third connecting rod, the two bases are arranged below the magnetic base body, and the opening and closing directions of the two bases are perpendicular to the magnetic attraction force directions of the first magnetic base and the second magnetic base; the first translation assembly comprises two push rods arranged at an included angle, one ends of the two push rods are rotationally connected to the first base at the same time, and the other ends of the two push rods are rotationally connected to the first magnetic base and the second magnetic base respectively; the second translation assembly comprises two push rods arranged at an included angle, one ends of the two push rods are rotationally connected to the second base simultaneously, and the other ends are rotationally connected to the first magnetic base and the second magnetic base respectively. According to the novel longitudinal and transverse rotating magnetic attraction expansion device, traditional repulsive force is replaced by magnetic attraction force, and the problems that the distance between magnets is increased and the magnetic force is sharply reduced along with expansion of a dental arch of a traditional expansion device can be solved.

This utility model relates to the field of mechanical engineering, and more particularly to a spring connection structure with adaptive elastic deformation. This utility model provides a spring connection structure with adaptive elastic deformation that can adaptively rotate at multiple angles according to the non-axial external force applied to the telescopic spring, reducing the additional stress generated by the torsion or bending of the telescopic spring. The adaptive elastic deformation spring connection structure includes a first mounting base, a connecting rod, and a second mounting base, etc. The second mounting base is located above the first mounting base, and the connecting rod is connected to the middle of both the first and second mounting bases. This utility model uses a rotating block to rotate on the connecting rod, and the connecting block rotates on the rotating block, causing the connecting frame to rotate. This keeps the axial direction of the telescopic spring as consistent as possible with the direction of the force, achieving the effect of adaptive multi-angle rotation according to the non-axial external force applied to the telescopic spring, reducing the additional stress generated by the torsion or bending of the telescopic spring.

The invention relates to a forging press, in particular a free-form forging press, for forging a tubular workpiece (1), the forging press comprising: - a press frame, - a mandrel (2) which is arranged in or on the press frame and on which the workpiece (1) to be deformed is positioned or is to be positioned, - wherein the mandrel (2) is conical at least in some regions and has at least one contact surface (3) inclined with respect to the mandrel axis (D), - a forging saddle (4) which can be moved in a main pressing-force direction (R) towards the mandrel (2) and the workpiece (1) positioned on the mandrel (2), and by means of which a pressing force (Fp) oriented in the main pressing-force direction (R) can be applied to the workpiece, wherein, due to the inclined contact surface (3) of the mandrel (2), the pressing force (Fp) results in a transverse force (Fq) oriented transversely to the main pressing-force direction (R). The press is characterised in that the forging saddle (4) has a shoulder (6) comprising a support surface (7) which is preferably oriented parallel to the main pressing-force direction and against which the mandrel (2) can be supported such that the transverse force (Fq) is transmitted into the shoulder (6) and thereby absorbed by the forging saddle (4).

1. The name of the design product: pulley (universal joint section). 2. The use of the design product: pulley for guiding, pulling load, changing the direction of force. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

The invention belongs to the technical field of scraper conveyor speed reducer auxiliary maintenance fixing devices, and particularly discloses a scraper conveyor speed reducer maintenance fixing support which comprises a device body. A jack is arranged at the rear end of the device body, and an assembly type dismantling mechanism is arranged between the device body and the jack. Through the design of the assembly type dismounting mechanism, the function of assembling the jack so as to provide an acting point is achieved, and the problems that an existing device is not provided with an assembly capable of transversely supporting and fixing the jack, when a coupling wheel needs to be transversely dismounted, the jack needs to be transversely placed in the air, and the assembly is inconvenient are solved. The problem that the jack is in a suspended state and cannot provide an effective acting point due to the fact that the jack needs to be jacked on the shaft through a jacking disc of the jack and the acting force direction of the jack and the central axis of the coupling are on the same straight line, namely the acting force direction is also transverse, is solved, and convenience is improved.

The invention discloses an accurate measurement device and method based on water tunnel flow field resistance, and relates to the technical field of flow field medium measurement. Comprising a working section and a test board. The working section is internally provided with a testing assembly for testing the flow field medium resistance of the testing plate; the test assembly comprises a fixed plate; sensor fixing seats are symmetrically and fixedly connected to the fixing plate, force sensors are fixedly connected to the sensor fixing seats, and the force sensors are used for detecting the force values of a flow field medium in the working section acting on the X-axis direction and the Y-axis direction of the testing plate; the force sensors are fixedly connected with connecting plates. An adjusting assembly used for adjusting the height of the testing plate is arranged between the testing plate and the connecting plates. The force measuring directions of the Y-axis directions of the adjacent force sensors are opposite, and the force value output by the S-shaped force sensor is the resultant force of the X-axis direction and the Y-axis direction; the horizontal resistance of a flow field medium borne by the test plate can be accurately measured, meanwhile, the pressure difference interference force in the vertical direction is effectively counteracted, and the resistance test precision and stability are improved.

A film bubble flattening and clamping mechanism of film blowing equipment comprises a herringbone clamping plate and a traction clamping roller, the traction clamping roller comprises a fixed roller and a movable roller, and a movable roller support is arranged at the longitudinal end of the movable roller; horizontal cylinders for driving the movable roller support to horizontally move relative to the fixed roller are respectively arranged on the front side and the rear side of the movable roller in a matched manner; the lower half section of the herringbone clamping plate, the movable roller, the fixed roller and the horizontal air cylinder are intensively arranged in a cuboid-shaped mounting box body; the front side and the rear side of the movable roller are respectively provided with a vertical plate, and a movable roller support at the end part of each side of the movable roller is arranged in the middle of the vertical plate; the horizontal position of the horizontal cylinder and the fixed roller are located on the same side of the movable roller, and the contraction direction of a piston rod of the horizontal cylinder is the same as the pressure direction of the movable roller on the fixed roller when the movable roller clamps the film. The case provided by the utility model is small in transverse size and small in occupied space.

The invention relates to the technical field of sucker rods, and provides a high-pressure-resistant sucker rod with a locking structure, the high-pressure-resistant sucker rod comprises a connecting assembly and sucker rod assemblies, the sucker rod assemblies are fixedly mounted at the upper end and the lower end of the connecting assembly, and the connecting assembly comprises a rotating mechanism; elastic blocking assemblies are fixedly connected to the upper and lower ends of the periphery of the middle of the rotating mechanism, connecting mechanisms are rotatably connected to the peripheries of the upper and lower ends of the rotating mechanism, impact assemblies are fixedly connected to the sides, close to the middle of the rotating mechanism, of the connecting mechanisms, and adjusting assemblies are arranged on one sides of the impact assemblies. The balls II in the connecting seats at the upper end and the lower end rotate on the peripheries of the upper end and the lower end of the rotating seat, so that the connecting seats at the upper end and the lower end can easily rotate on the periphery of the rotating seat, and the twisting force of the sucker rod assembly is released; the situation that the sucker rod assembly is twisted due to the change of the direction of force acting on the sucker rod assembly in the oil pumping process, and connection between the sucker rod assembly and the connecting assembly is loosened is avoided.

The invention discloses a fixed wing patrol aircraft flight attitude control method, and belongs to the technical field of unmanned aerial vehicles. Aiming at the technical contradiction that high-speed flight maneuverability and weapon shooting stability cannot be compatible, the method achieves breakthrough through the following innovative schemes that a four-wing propeller collaborative framework is designed, and each propeller is provided with a horizontal linear driver to achieve front-back telescopic displacement in the axial direction of a fuselage; in the horizontal flight stage, based on the feedback of a gyro stabilizer, pitching / rolling double-axis attitude accurate control is realized through the cooperative adjustment of propeller position stretching and rotation speed difference; triggering a layered compensation strategy by an ignition event, and synchronously adjusting the horizontal position and the rotating speed of a propeller according to the recoil force direction; and the tail vane intervenes in fine adjustment only when the yaw is out of tolerance. By combining the seamless conversion design of the vertical take-off and landing stage, the three technical problems of height loss without initial-speed deployment, low aerodynamic efficiency of high-speed flight and insufficient shooting precision are solved.

The utility model relates to the technical field of household appliances, and discloses an inner cutter head for a bean grinder and the bean grinder, the inner cutter head comprises a main body, a plurality of first blades and a plurality of second blades, the first blades are connected to the side surface of the main body at intervals along the circumferential direction of the main body, and the first blades are located at the lower half section of the main body; the first blade comprises cutting edges and thorn-shaped structures, the cutting edges are located at the tail ends of the thorn-shaped structures, the thorn-shaped structures are located at the cutting edges, and a plurality of thorn-shaped structures are distributed on each cutting edge; the multiple second blades are connected to the side surface of the body in the circumferential direction of the body at intervals and located on the upper half section of the body. Through the arrangement, the technical problem that particles formed after beans are ground are large in size due to the fact that the stress direction of the beans is single in the grinding process is solved.

The application relates to a semiconductor laser sintering clamp fastening device and a use method thereof, and belongs to the technical field of semiconductor laser manufacturing. The device comprises a sintering clamp, a C-shaped fixing base, a turbine, a worm, a camshaft and a fixing plate. The lower end of the C-shaped fixing base is sleeved with the sintering clamp in a sliding mode, one side of the inside of the C-shaped fixing base is provided with the camshaft, the two ends of the camshaft are slidably connected to the C-shaped fixing base through bearings, the one end of the camshaft is externally connected with the turbine, the turbine is connected with the worm, and the worm is fixedly arranged outside the C-shaped fixing base through the fixing plate. The application designs a novel fastening method, the sintering clamp is fastened by adopting the structure of the cam above the fastening structural member, the height difference during the rotation of the cam can generate a downward force to fix the sintering clamp, the axial rotation friction force direction of the cam is parallel to the direction of the bar light emitting surface, the bar is not deviated, and the phenomenon that one side of the sintered laser is shrunk and the other side is excessively protruded is avoided.