22790 results about "Grinding" patented technology

Energy is locally supplied to a cutting surface that is formed in an outer circumferential region of a wafer in a trimming step, before a grinding step of grinding the wafer. This can remove or repair at least part of a damage layer formed in the outer circumferential region of the wafer due to the trimming step. As a result, breakage of the wafer that originates from the outer circumferential region in the grinding of the wafer which has been subjected to the edge trimming and generation of dust in a step after this grinding can be suppressed.

The invention relates to the field of grinding and polishing, in particular to an automobile spoiler mechanical arm grinding system and method.The automobile spoiler mechanical arm grinding system comprises a path planning module, a state monitoring module, a parameter compensation module and a waste collecting module which are in communication connection, and the path planning module is used for scanning a spoiler in real time through a visual sensor and dynamically adjusting a grinding path; the visual sensor is a 3D structured light sensor or a stereoscopic visual camera; the state monitoring module is used for monitoring the vibration state of the grinding head in real time through the vibration sensor and obtaining vibration abnormal data. The parameter compensation module is used for automatically adjusting grinding parameters according to the abnormal vibration data and adjusting a grinding head for grinding; the waste collecting module is used for collecting and treating dust and waste generated in the polishing process in a centralized mode. The polishing path can be precisely planned, the polishing quality is improved, the production efficiency is improved, the cost is reduced, and dust and waste materials are effectively treated.

The invention discloses a polishing track planning method for an artificial metal skeleton, which realizes self-adaptive fine polishing on a complex surface through multi-mode perception fusion of vision and touch. The method comprises the steps that global point cloud data and local point cloud data are obtained through a large-view and high-precision line laser sensor, a to-be-polished area and the height difference are accurately calculated in combination with a relative pose matrix and an ICP algorithm, and a polishing track is generated through a greedy triangulation and slice construction algorithm. A least square method is adopted for smoothing a track contour line, a polishing path is optimized, and it is ensured that the track is smooth and stable; and in combination with real-time feedback adjustment of a six-dimensional force sensor, constant force control is achieved, and the problems of uneven pressure and surface damage in traditional grinding are solved. According to the scheme, the grinding precision, consistency and adaptability are remarkably improved, and the method is particularly suitable for high-requirement grinding of metal skeletons in complex forms. Compared with the prior art, the real-time dynamic optimization of the polishing track from visual and tactile data is realized.

The invention discloses a pipe polishing device for landscaping engineering construction, and particularly relates to the technical field of pipeline machining device.The pipe polishing device comprises a machine table, and the output end of an electric telescopic rod penetrates through the upper end of a supporting frame, extends to the lower end of the horizontal part of the supporting frame and is fixedly connected with a polishing structure slidably connected with the vertical part of the supporting frame; a clamping supporting structure is arranged in the middle of the upper end of the machine table. According to the pipe polishing device for landscaping engineering construction, the supporting assembly is mainly used for assisting third driving motors on the two sides and the polishing assembly to support a pipeline, and meanwhile the two sides of the pipeline are polished through cooperation of the clamping assembly and the polishing structure; the driving assemblies on the two sides follow the action of the grinding structure to drive the clamping assemblies to act so as to support the inner wall of the pipeline, the surface of the pipeline is ground through the cooperation effect of the grinding structure and the sliding support, the pipeline is prevented from shaking through the action of the clamping assemblies, and the grinding precision and the grinding effect are improved.

The invention relates to the technical field of polishing, and discloses an intelligent steel rail polishing control method which comprises the following steps: acquiring surface and internal defect data of a steel rail through laser and ultrasonic fusion detection, discretizing the data into multi-dimensional nodes, and constructing a dynamic graph model comprising a microscopic-macroscopic dual-cluster neural network to predict a defect evolution trend; based on fractal dimensions and information entropy, multi-source data are dynamically fused, abnormities are eliminated, chaotic optimization and wear prediction are adopted to generate global optimal polishing parameters, and finally parameter dynamic adjustment is achieved through closed-loop feedback of pulse frequency and control errors. Steel rail defect collaborative perception is achieved through a multi-scale dynamic graph model, fractal-entropy weight dynamic fusion is combined to enhance data reliability, global optimal parameters are generated through chaos optimization and abrasion prediction, accurate grinding is achieved through pulse-error closed-loop control, and the method is simple and convenient to implement. The problems of data fusion failure, defect response lag, parameter local optimization and insufficient control precision in the prior art are solved.

The invention discloses grinding equipment with a surface self-adaption function for civil aircraft maintenance, and relates to the technical field of grinding equipment, the grinding equipment comprises a grinding mechanism, a self-adaption mechanism and a positioning mechanism, the grinding mechanism is fixedly connected with the self-adaption mechanism, and the self-adaption mechanism is fixedly connected with the positioning mechanism. The grinding mechanism is used for driving a grinding disc to work, and flexible grinding of the surfaces of different areas can be achieved. The self-adaptive mechanism is composed of a self-adaptive assembly, an expanding and contracting assembly and a rotating assembly, the grinding disc has the flexible adjusting capacity when making contact with the surface of a workpiece, the expanding and contracting assembly achieves expanding and contracting, the rotating assembly drives an expanding and contracting block to revolve, and therefore the adaptability of the grinding disc on the complex curved surface is guaranteed. And the positioning mechanism is used for positioning parts needing to be maintained, so that the purposes of adapting to complex curved surfaces, improving the polishing precision and efficiency, avoiding the problem of difficult attachment and ensuring the maintenance quality and the operation safety are achieved.

The invention discloses a rotor structure and an inner cylinder structure of a sand mill. A plurality of grinding blocks and first bulges are arranged on the outer wall surface of the rotor structure; the grinding blocks and the first protrusions are arranged on the outer wall face of the rotor structure in a crossed mode in the circumferential direction and the axial direction of the rotor structure. Each grinding block is provided with four side faces and a top face, the first side face faces the first end of the grinding cavity, the second side face faces the second end of the grinding cavity, and the third side face is a slope face and obliquely faces the grinding block axially adjacent to the grinding block. In the grinding blocks distributed on the outer wall face of the rotor structure in the axial direction, the normal directions of the third side faces of at least one pair of adjacent grinding blocks intersect, and the intersection point is located between the pair of adjacent grinding blocks; a plurality of oval third protrusions are arranged on the inner wall face of the inner cylinder structure. According to the sand mill, the collision frequency between grinding media and between the grinding media and the wall face of the inner cylinder can be increased, the uniformity degree of materials in the grinding cavity is improved, and the grinding and smashing efficiency of the sand mill is improved.

The invention discloses a curved surface mapping track optimization and multi-modal force control method for complex wall surface polishing. The method can efficiently meet the polishing requirement of a complex curved surface. A polishing track is determined by introducing a projection technology, a path optimization model is constructed, and multi-node force fusion attitude control is combined, so that interpolation point calculation and attitude change and position planning matching are realized, and a robot polishing path including a polishing position, an attitude and adjustment parameters is effectively generated. According to the multi-mode force control method, a force control mode is dynamically adjusted by combining radial height state switching of state classification of convex and concave path sections; multi-node fusion attitude control is further introduced, the surface contact force of a sand disc is accurately tracked, the tail end attitude of the robot is dynamically adjusted to follow the curved surface characteristics, the problems of irregular curved surfaces, unstable force control and the like in the traditional grinding technology are solved, and the method can be widely applied to automatic efficient grinding operation in the fields of buildings, ships and the like; and efficient and high-precision grinding of the complex curved surface is achieved.

The invention discloses a polishing device for automobile part machining, and relates to the technical field of automobile part machining equipment, the polishing device comprises a workbench mechanism and a mechanical control mechanism, and the mechanical control mechanism comprises a base, a controller and a mechanical arm. According to the grinding device, when the grinding head needs to be replaced, a connecting rod of the replaced grinding head is fixedly connected with a power shaft in an inserted mode, after a plurality of inserting holes of a rotating ring are aligned with a plurality of inserting rods, a micro motor drives a driving gear to rotate, the inserting rods are inserted into the inserting holes, the rotating ring is connected, and replacement and installation of the grinding head are completed; a proper polishing head can be conveniently and rapidly replaced when different parts or different parts are polished, the overall polishing efficiency of the device is improved, pressure and distance information between the polishing head and the surfaces of the parts is detected in real time through a pressure sensor and a distance sensor, and a control system of a controller controls the polishing head according to the information. And the posture of the mechanical arm and the position of the grinding head are accurately adjusted, and self-adaptive high-precision grinding is achieved.

The utility model discloses an aviation aluminum alloy pipe type casting polishing device which comprises a base, two sets of supporting seats are arranged on the base, two sets of first electric push rods are symmetrically arranged on the two sets of supporting seats through supporting grooves, supporting roller sets are arranged at the output ends of the first electric push rods, and a second electric push rod is arranged above the base through a mounting frame. A driving roller set is arranged at the bottom end of the second electric push rod, an external grinding block is arranged on one side of the middle of the supporting base and the driving roller set, a movable driving structure is arranged in cooperation with the external grinding block, and a mounting base is arranged on one side of the base through a third electric push rod. A first motor, a fourth electric push rod and an internal grinding roller which are sequentially connected are arranged on the mounting base, flexible supporting and rotating driving of the aviation aluminum alloy pipe type casting during grinding can be achieved, meanwhile, synchronous grinding of the interior and the outer wall of the aviation aluminum alloy pipe type casting can be achieved synchronously, and the machining efficiency is improved.

The invention relates to the technical field of control parameter optimization, in particular to a particle swarm optimization-based grinding parameter optimization method for a full-automatic coarse and fine grinding all-in-one machine. The method comprises the following steps: acquiring equipment operation multi-modal data, and performing multi-thread aggregation to obtain structured grinding field sensing data; performing grinding parameter semantic abstraction on the structured grinding field sensing data to obtain a grinding parameter intention nested mapping table; performing rough solution space boundary evolution on the grinding parameter intention nesting mapping table to obtain a coarse-grained grinding parameter track group; soft clustering biased learning is carried out on the coarse-grained grinding parameter trajectory group, and a high-dimensional grinding parameter candidate map is obtained; and parameter tensor loopback optimization is conducted according to the high-dimensional grinding parameter candidate atlas, and a stable grinding parameter set is obtained. According to the invention, the precision and the production efficiency of the equipment are improved, the energy consumption is reduced, and the abrasion and the maintenance cost of the equipment are reduced, so that higher benefits and sustainable development are realized in industrial production.

The invention discloses an automatic grinding system for hardware die castings, and relates to the technical field of grinding of die castings. An automatic polishing system for hardware die castings comprises a polishing module arranged on a base, the polishing module comprises a mounting plate slidably mounted on the base, a first mounting pipe is rotatably mounted on the mounting plate, and a first limiting belt wheel is fixedly mounted on the first mounting pipe; a tensioning wheel assembly is arranged on the side face of the mounting plate, and a second limiting belt wheel is rotationally arranged at the output end of the tensioning wheel assembly; the wheel type pressing part of the rolling belt pressing assembly is used for replacing a traditional plane pressing block, sliding friction is converted into rolling friction, the contact area is reduced, friction heat is dispersed, and the risk that an abrasive belt base is fiberized and cracked due to high temperature is reduced; after polishing is completed, the expansion assembly drives the abrasive belt to be bent to the back included angle of 15-35 degrees, abrasive particle gaps are expanded, dust can naturally fall off by means of centrifugal force and gravity when the abrasive belt idles, and the contact area of the abrasive belt and air can be increased to accelerate heat dissipation.

The invention relates to the technical field of grinding equipment, in particular to an aluminum foil mill roller grinding device which comprises a rack, a centering clamping assembly and a grinding assembly, the centering clamping assembly is arranged on the rack and used for clamping a roller and enabling the roller to rotate around the axis of the roller, and the grinding assembly comprises a shell, a grinding disc, a supporting column and a damping ring. The shell is slidably arranged on the rack, the grinding disc is rotatably arranged on the inner side of the shell, the axis of the grinding disc is horizontal, and the grinding disc can rotate around the axis of the grinding disc. The grinding device is provided with the supporting column and the grinding block, the grinding block is hinged to the periphery of the supporting column, and the grinding block is configured to be capable of rotating so that the grinding face of the grinding block can always keep linear contact with the peripheral face of the roller; therefore, the grinding block is not in linear contact with the roller due to different abrasion losses of the two ends of the grinding block at the grinding contact position of the grinding block and the roller, the grinding quality is guaranteed, and meanwhile the grinding efficiency is improved.

The invention discloses an inner wall grinding device for deep-hole precision parts, and particularly relates to the technical field of pipeline grinding, the inner wall grinding device comprises a grinding box, a grinding mechanism is mounted on one side of a driving assembly, a centering assembly is mounted on the other side of an inner cavity of the grinding box, and a rotating mechanism for driving a round pipe part to rotate is mounted on the rear portion of the centering assembly; and a cooling mechanism for spraying the round pipe part is installed on the right side of the bottom of the grinding box, and two supporting assemblies for supporting the round pipe part are installed on the right side of the bottom of the grinding box. According to the inner wall grinding device for the deep-hole precise part, in the process that a round pipe part is ground from right to left through the arranged grinding mechanism, the internal structure of the grinding mechanism moves under the effect of grinding the round pipe part, and chippings and cutting fluid contained in an inner cavity of the round pipe part can be synchronously scraped outwards; the problem of secondary scratching caused by scrap accumulation in deep hole machining is solved, and meanwhile the workload of the follow-up cleaning procedure is reduced.

The invention provides a clamp for milling, drilling and tapping integrated machining equipment, and relates to the technical field of shaft workpiece machining clamps. Comprising two sets of clamping mechanisms and four sets of moving driving mechanisms, each set of clamping mechanism comprises two clamping units capable of being matched with each other for clamping, the moving driving mechanisms drive the first set of clamping mechanism and the second set of clamping mechanism to be away from each other, and the second set of clamping mechanism moves towards the end, to be polished, of the shaft workpiece. The friction force between the outer surface of the shaft workpiece and a driving roller of a second group of clamping mechanisms enables the driving roller to overcome the action of a third driving spring to move in the axial direction relative to a second central shaft, and the end part of a rod grinding tool is propped against a slope propping block; the bevel abutting block drives the tool bit of the rod grinding tool to stretch out of the guide hole so as to grind the outer surface of the shaft workpiece. According to the clamp for the milling, drilling and tapping integrated machining equipment, the outer surface of a shaft workpiece can be polished while the shaft workpiece is clamped, and therefore the clamping and positioning accuracy during milling, drilling and tapping machining is improved.

The invention discloses a grinding device for internal tooth forming, and particularly relates to the technical field of grinding, the grinding device comprises a sliding rail frame, a positioning plate is slidably mounted at the top of the sliding rail frame, a grinding mechanism is slidably mounted on one side of the positioning plate, and a telescopic cylinder for driving the positioning plate to move is fixedly mounted on the side, away from the grinding mechanism, of the positioning plate; a positioning mechanism is fixedly installed at the top of the sliding rail frame, and a driving mechanism is rotationally installed on the outer wall of the positioning mechanism. A plurality of limiting assemblies which are annularly and sequentially arranged around the outer wall of the gear at equal intervals are arranged, the multiple limiting assemblies are adjusted through repulsive magnetic strips so as to limit and abut against the outer wall of the gear, and suction cups which are fixedly attracted to the two sides of the gear are arranged in a first clamping plate and a second clamping plate; the limiting work of the outer wall of the gear is simpler and more convenient, stress is uniform, deformation and damage are not prone to occurring, and actual use is more convenient.

The invention provides a flange short pipe accurate welding device based on detection correction and an operation method, the flange short pipe accurate welding device is used for correcting and welding a flange plate and a short pipe, and the flange short pipe accurate welding device comprises a workbench, a flange plate fastening device, a lifting device, a grinding mechanism, an operation arm and a detection aligner. The workbench is arranged on the horizontal plane and provided with a finished product containing area and a machining area. The finished product placing area is used for placing processed finished products; the flange plate fastening device is arranged in the machining area of the workbench. The lifting device is arranged above the flange plate fastening device; the grinding mechanism comprises a grinding disc and a grinding motor; the grinding disc is connected with an output shaft of the grinding motor; the grinding disc is lifted and rotated through a lifting device and a grinding motor respectively; the operation arm comprises a clamping mechanical arm and a welding mechanical arm which are used for clamping a short pipe and welding the short pipe and a flange plate correspondingly. And the detection aligner is arranged around the flange plate fastening device and is in communication connection with the control system.

The invention provides a mineral leaching property analysis method, which belongs to the field of process mineralogy, and comprises the following steps: crushing and enriching a sample to be detected, and selecting single mineral particles to obtain target mineral particles; the preparation method comprises the following steps: coating a sample preparation grinding tool with epoxy resin glue, adding target mineral particles, and carrying out curing and grinding treatment to obtain a primary sample; cutting the primary sample, placing the grinding surface downwards and the three wear-resistant alloys at the bottom of a sample preparation grinding tool, injecting epoxy resin glue, curing to form a composite sample, accurately grinding, polishing, performing carbon spraying treatment, performing first automatic mineralogical analysis, measuring the area of a target mineral, cleaning, and performing leaching treatment to obtain a treated sample; and after solidification, accurate grinding and polishing and carbon spraying treatment, secondary automatic mineralogical analysis is carried out, the area of the residual target mineral is measured, and the leaching index of the target mineral is calculated. Reliable technical support is provided for mineral processing technology optimization and resource evaluation, and the method is particularly suitable for development of efficient leaching technologies of precious metal, rare earth and the like.

The invention relates to the technical field of iron core stamping, in particular to automobile motor iron core stamping forming equipment. Comprising a lower die base, and a supporting column is fixedly installed at the upper end of the lower die base; through the arrangement of the grinding groove, when a silicon steel strip passes through the grinding groove to reach a third station and a fourth station, polishing cloth in the grinding groove can grind and fall off burrs on the lower end face of the silicon steel strip, and therefore the situation that the burrs at the lower end of the silicon steel strip are brought into the third station and the fourth station is avoided; the burrs are prevented from falling on the surfaces of the rotor punching sheets and the stator punching sheets in the third station and the fourth station, on one hand, stress concentration of the positions where the burrs are located in the laminating and riveting process is prevented, the rotor punching sheets and the stator punching sheets are prevented from being mechanically damaged, and the laminating and riveting quality of the punched rotor punching sheets and the punched stator punching sheets is improved; and on the other hand, burrs are prevented from falling into the riveting grooves, so that the riveting points of the adjacent rotor punching sheets or stator punching sheets can be effectively inserted into the riveting grooves, and the riveting strength of the rotor punching sheets or stator punching sheets is improved.

The invention discloses grinding equipment and a grinding method for nitrogen spring machining, and relates to the technical field of nitrogen spring machining. The grinding equipment for nitrogen spring machining comprises an inner frame body, an outer frame body, an outer grinding device arranged on the axial side of the outer frame body, an inner grinding device arranged on the side, close to the outer grinding device, of the outer frame body, and a moving device used for driving the inner frame body, the outer frame body, the outer grinding device and the inner grinding device to move. The outer grinding device comprises outer grinding blocks, the outer grinding blocks are arranged in an annular array in the circumferential direction of the inner frame body, and the inner grinding device comprises inner grinding blocks. The multiple outer grinding blocks and the multiple inner grinding blocks can be fused on the same device, reciprocating rough grinding, fine grinding and polishing can be sequentially conducted according to grinding parts and requirements, the use effect is good, the device is suitable for grinding of cylinder bodies or plunger rods with different radiuses, the device adaptability is high, the inner grinding blocks can be conveniently detached, replaced or maintained, the structure is simple, and the practicability is high. The operation is convenient.

The invention relates to the technical field of grinding equipment, in particular to flame-retardant cable protection pipe production and processing equipment and method.The flame-retardant cable protection pipe production and processing equipment comprises a support, a guide rod is fixedly assembled on the upper surface of the support, a sliding frame is slidably connected to the outer circumferential face of the guide rod, and a transmission shaft is rotatably connected into the sliding frame; a driving motor is fixedly assembled on the surface of the sliding frame, the output end of the driving motor is fixedly connected with a transmission shaft, a mounting ring is fixedly assembled on the outer circumferential surface of the transmission shaft, a grinding head is detachably mounted on the outer circumferential surface of the mounting ring, and a servo motor is fixedly assembled on the upper surface of the support; a lead screw is fixedly assembled at the output end of the servo motor. According to the device, the purging structure is arranged, when the inner wall of the flame-retardant cable protection pipe is polished, air exhausted by the spraying pipe can drive chippings to move, the chippings are discharged out of the protection pipe in time, and therefore the follow-up polishing effect of the polishing head on the protection pipe is guaranteed.

The invention belongs to the technical field of wood polishing, and discloses a woodcarving blank corner polishing device which comprises a device box and supporting legs fixedly arranged on the bottom wall of the device box. The woodcarving blank corner grinding device further comprises a contact force self-adjusting assembly arranged on the device box and a semi-linkage coupling control assembly arranged on the contact force self-adjusting assembly, the hardness of wood can be automatically detected, the contact force and the rotating speed can be correspondingly adjusted, when hard wood is treated, the rotating speed of the device is automatically reduced through the Newton's second law, and the grinding efficiency is improved. When softwood is treated, an equipment stop lever and a stop block rotate synchronously, rotating speed synchronization of a rotating cylinder and a second electric motor is achieved, machining efficiency is improved, the Hooke's law is utilized, wood hardness is converted into piston displacement, high-frequency rapid grinding is achieved, meanwhile, contact force is reduced, and wood damage is prevented; through a full-automatic closed-loop control system, automatic and efficient blank plate machining is achieved.

The invention belongs to the technical field of grinding and polishing, and discloses automobile die pushing type positioning rod machining equipment which comprises a machine body, a mounting block is arranged at the top of the machine body, a moving mechanism is arranged at the bottom of one side of the mounting block, a grinding structure is arranged on one side of the moving mechanism, and two fixing plates are arranged at the top of the mounting block. The bottoms of the two fixing plates are slidably connected with the top of the mounting block, mounting rings are rotationally connected to the opposite sides of the two fixing plates, and a positioning rod is arranged between the close sides of the mounting rings. After the middle of the positioning rod is polished through the polishing structure, a first motor and a first electric push rod drive a mounting ring and a fixing plate to move, after the two ends of the positioning rod are exposed, a first transmission wheel and a second transmission wheel are engaged to enable the positioning rod to continue to rotate, and the two ends of the positioning rod can be polished by moving the polishing mechanism; and the end of the positioning rod can be ground without taking down the positioning rod, use is convenient, and the grinding and polishing efficiency can be improved conveniently.

The invention relates to the technical field of glass processing equipment, and discloses an intelligent composite glass edge grinding machine which comprises a machine base and a processing part arranged on the machine base, an edge grinding assembly is arranged on the processing part, and the edge grinding assembly comprises a mounting base arranged on the processing part, a driving motor capable of moving back and forth on the mounting base and a connecting base. A rotating shaft of the driving motor is connected with an outer grinding head and an inner grinding head which are coaxially arranged, the inner grinding head can move relative to the outer grinding head in the axial direction of the inner grinding head, and the mounting base is provided with a second adjusting device capable of driving the driving motor and the connecting base to move back and forth. The intelligent composite glass edge grinding machine is high in machining efficiency, high in stability and small in size.

The invention belongs to the technical field of precision machining equipment, and discloses a partitioned and deformation-controllable precision polishing grinding head which comprises a partitioned base, a positioning block is arranged in the center of the lower portion of the partitioned base, at least one connecting rod assembly is arranged above the partitioned base, and the top end of each connecting rod assembly is connected with a curvature adjusting head. A flexible polishing head is arranged above the curvature adjusting head, a protective shell is arranged on the outer side of the connecting rod assembly, the flexible polishing head and the protective shell are connected through a grinding head frame, and the whole device is provided with a drive circuit. According to the precise polishing grinding head capable of being partitioned and deformed controllably, through the partitioned base and the independent shape memory alloy driver, the curvature radiuses of the center and the edge of the flexible polishing head are controlled, the edge pressure is optimized, stable contact rigidity and uniform pressure distribution are brought, and finer surface shape control is achieved; the shape memory alloy driver is a solid-state element and is matched with the transverse amplification connecting rod, and needed driving force and displacement can be achieved in a relatively compact space.

The steel pipe internal grinding machine with the synchronous grinding function comprises a workbench, fixed clamping mechanisms are symmetrically arranged on the two sides of the upper end of a first moving assembly symmetrically arranged in the middle of the upper end of the workbench, and installation adjusting assemblies are symmetrically arranged on the two sides of the upper end of a second moving assembly installed on the inner side of the middle of the upper end of the workbench; the outer side of the mounting adjusting assembly is connected with the second moving assembly through a driving assembly, and a polishing assembly is arranged on the side, close to the fixed clamping mechanism, of the mounting adjusting assembly. According to the steel pipe internal grinding machine with the synchronous grinding function, a second lead screw is driven to rotate through a second two-way motor, so that during machining, a mounting adjusting assembly and a grinding assembly which are symmetrically arranged on the two sides are synchronously driven to move towards one side of a steel pipe, and then a rotating rod is driven to rotate through a driving gear, a transmission assembly and a driving assembly; and the interiors of the two ends of the steel pipe are polished at the same time, and therefore the polishing machining efficiency is improved.

The invention relates to a crack propagation method and a laser fragmentation method of a solid material, and the crack propagation method comprises the following steps: a pre-fixing process: respectively arranging fixed areas on two sides of a modified layer of the solid material obtained by laser modification; and applying force to at least one fixed area, and introducing mechanical stress into the crack expansion process of the modified layer, the laser fragmentation method comprises the following steps: a stripping process of forming a modified layer in a solid material by using laser; a crack propagation process of stripping the solid material with the modified layer by using the crack propagation method; and the residual solid is treated through grinding, laser and crack propagation in sequence. According to the crack propagation method, the two sides of the modified layer are mechanically controlled to generate relative movement, so that the crack is promoted to expand according to the preset mode, the stripping force is reduced, and the crack propagation method has the advantages of simple steps and convenience in subsequent stripping and is suitable for automatic continuous production; the laser fragmentation method has the advantage of high stripping efficiency.

The invention relates to the technical field of feed processing, in particular to an efficient energy-saving feed raw material grinding and smashing device which comprises a smashing box body, a feeding groove is formed in the top of the smashing box body, a material passing cavity is formed in the feeding groove, and the bottom of the material passing cavity communicates with a grinding and smashing cavity and a collecting cavity. A plurality of smashing assemblies are arranged on the transmission rotary drum, a plurality of collecting assemblies are arranged in the transmission rotary drum, a feeding driving assembly is arranged in the material passing cavity, an adjusting smashing assembly is arranged in the transmission rotary drum, and a screen piece adjusting assembly is arranged in the collecting cavity. And a control system is arranged in the crushing box body, judges the hardness, density and distribution uniformity of the materials according to data acquired by the acquisition assembly, controls the feeding flow of the raw materials, and dynamically adjusts the screening thickness and the crushing efficiency of the crushing assembly. According to the invention, asymmetric rotor design, dynamic airflow regulation and control and an intelligent feedback system are integrated, so that the particle sorting problem is solved, the energy consumption of crushing and grinding is reduced, and the service life of crushing hammers is prolonged.

The invention provides a high-porosity ceramic bond diamond micro-powder grinding tool and a preparation method and application thereof. The preparation method comprises the following steps: preparing ceramic bond diamond micro-powder composite powder by adopting a sol-gel method; the preparation method comprises the following steps: preparing porous agglomerated diamond microspheres by taking ceramic bond diamond micro-powder composite powder and an organic pore-forming agent as raw materials and adopting an atomization granulation method; the preparation method comprises the following steps: taking sodium alginate and calcium salt as raw materials, and preparing a calcium alginate water ball solution by adopting a multiple emulsion method and an atomization granulation method; the porous agglomerated diamond microspheres and the calcium alginate water balls are used as main raw materials, and a gel casting method is adopted for preparing the ceramic bond diamond micro-powder grinding tool. According to the diamond micro-powder grinding tool, the organic pore forming agent and the sodium alginate water balls are used as the pore forming agents, so that the particle size and proportion of pores in the prepared diamond micro-powder grinding tool can be accurately controlled, and the diamond micro-powder grinding tool has the characteristics of high porosity, good self-sharpening performance, low grinding resistance and the like and can be used for efficient and high-quality machining of semiconductor materials.

The invention belongs to the technical field of automobile machining, and particularly relates to automobile pipe fitting welding equipment which comprises a square pipe, clamping equipment is symmetrically arranged on the two sides of the outer surface of the square pipe, processing equipment is arranged at the bottoms of the clamping equipment, and top welding equipment is arranged at the top of the square pipe. According to the device, when top welding equipment is used for welding, a welding seam below a special-shaped pipe can be ground through grinding equipment below the special-shaped pipe, so that welding slag at the welding seam of the pipe fitting is cleaned away, an adjusting base can deflect to a certain degree under the control and propelling action of an inner side propelling rod, and the welding seam can be adjusted to a certain degree. According to the grinding device, the grinding rollers are arranged, so that the grinding rollers can carry out direction-variable grinding work on the welding seam of the pipe body, the grinding force on the pipe fitting is changed by pushing the grinding rollers, fine adjustment work is carried out on different parts of the square pipe in a matched mode, the grinding effect with uniform force is achieved, and the problem that the grinding force of the square pipe is improper is avoided.