276 results about "Cnc grinding" patented technology

The invention relates to the technical field of machine tool equipment, in particular to a numerical control grinding machine product quality real-time monitoring optimization method based on the Internet of Things. The method comprises the following steps: acquiring multi-node real-time operation data of the numerical control grinding machine; working state parameters of key components of the grinding machine are counted according to the multi-node real-time operation data; the product machining quality fluctuation trend is determined based on the multi-node real-time operation data and the working state parameters of the key components of the grinding machine; according to the product machining quality fluctuation trend, the cooperative change rule of the grinding machine tailstock jacking force is detected; and determining the geometric accuracy limitation trend of the workpiece according to the cooperative change rule of the jacking force of the tailstock of the grinding machine. According to the method, the control parameter adjustment behavior, the system response state and the quality detection result of the numerical control grinding machine are associated and integrated, and the tracking and effect evaluation of the key control behavior are realized by constructing a historical contrast system of the adjustment behavior and the response data.

The invention discloses a dynamic thermal deformation compensation method for a numerical control grinding machine. The dynamic thermal deformation compensation method comprises the following steps that three-dimensional temperature field data of a mechanical head are obtained in real time through a distributed temperature monitoring unit; inputting the three-dimensional temperature field data into a numerical control grinding machine thermal deformation digital twin model, and predicting thermal deformation and spatial distribution of the mechanical head in a future time period through coupling temperature field-stress field-deformation field simulation calculation; and generating a compensation strategy according to the thermal deformation and the spatial distribution, driving the radiator to move to a thermal deformation sensitive area for directional heat dissipation, and adjusting the position and posture of the grinding head through a five-axis linkage system of the numerical control grinding machine to offset the predicted thermal deformation. A three-dimensional temperature field of the mechanical head is reconstructed in real time through the distributed temperature monitoring unit, and accurate real-time prediction of thermal deformation and spatial distribution is achieved; and meanwhile, a five-axis system is cooperated to pre-adjust the position and posture of the grinding head, and the thermal deformation restraining precision and the machining stability are remarkably improved.

The invention belongs to the technical field of numerical control machine tool control, and discloses a deep groove ball bearing ring grinding error compensation method and system, and the method comprises the steps: monitoring the temperature of a numerical control grinding machine body and a main shaft in real time through a plurality of temperature sensors, and obtaining the temperature field distribution data of a numerical control grinding machine; according to the numerical control grinding machine temperature field distribution data, the temperature gradient of each temperature measurement position is calculated; comparing each temperature gradient obtained by calculation with a preset temperature gradient threshold value, and judging whether a temperature measurement position with the temperature gradient exceeding the temperature gradient threshold value exists or not; when the temperature measurement positions with the temperature gradients exceeding the temperature gradient threshold exist, error compensation parameters of the numerical control system are determined according to the temperature gradients of all the temperature measurement positions, and the grinding machining track and grinding parameters are corrected; therefore, the grinding precision of the deep groove ball bearing ring can be improved.

The invention discloses a temper mill bottom plate machining method which comprises the following specific steps that S100, appearance inspection is conducted on a bottom plate blank, and whether cracks and sand hole defects exist on the surface or not is checked; proper machining allowance is reserved according to the design size of the bottom plate; s200, a horizontal boring and milling machine is adopted, a hard alloy cutter is selected, and rough machining is conducted on the base plate blank in a multi-cutter and multi-blade milling mode; s300, the base plate obtained after rough machining is placed in an aging treatment furnace, the temperature is increased to 550-600 DEG C at the speed of 50-60 DEG C per hour, heat preservation is conducted for 4-6 hours, then the base plate is slowly cooled to the room temperature at the speed of 30-40 DEG C per hour, and therefore internal stress generated by rough machining is eliminated; s400, a horizontal boring and milling machine is adopted for conducting semi-finish machining on the bottom plate subjected to aging treatment; s500, carrying out vibration aging treatment on the semi-finished bottom plate by adopting vibration aging equipment; and S600, a high-precision numerical control grinding machine and a boring and milling machine are adopted for conducting finish machining on the bottom plate subjected to vibration aging treatment.

The invention provides a visual guidance numerical control grinding and polishing surface quality real-time regulation and control method and system, and the method comprises the following steps: starting numerical control grinding and polishing equipment, checking a power supply, air pressure and the operation state of a robot, switching the equipment to an automatic operation mode, carrying out the registration of an industrial camera and a robot coordinate system through a calibration plate, and carrying out the real-time regulation and control of the robot. And establishing a mapping relationship between the image and the physical size. Workpiece surface images are collected in real time through linkage of a visual sensor and robot IO signals, characteristic parameters are analyzed through a convolutional neural network model, quality scores are generated, grinding and polishing parameters (the rotating speed of a main shaft is + / -500 RPM, the thrust of a bit force shaft is + / -10 N, and the adjustment amplitude is smaller than or equal to 20%) are dynamically adjusted in combination with a parameter optimization rule base and a PID algorithm, and the grinding and polishing precision is improved. A'detection-evaluation-regulation 'closed-loop control process is formed, the problem of material waste caused by the fact that the quality state cannot be fed back in real time in traditional offline detection is solved, self-adaptive response to surface topography changes is achieved by replacing experience preset parameters, and machining consistency is improved.

The invention relates to the technical field of grinding control, in particular to a constant-power grinding control method, system and equipment of a numerical control grinding machine. According to the method, in a preset historical time period of a to-be-regulated moment, a time sequence curve of the deviation of the grinding power of the numerical control grinding machine relative to the preset grinding power is obtained and subjected to time sequence decomposition, and then proportional gain in PID control parameters is obtained according to the change trend of a trend component and the power deviation at the to-be-regulated moment in the trend component; obtaining an integral gain in the PID control parameters according to the periodic fluctuation characteristics of the seasonal components; according to the change trend of the time sequence curve and the fluctuation characteristics of the residual component, and in combination with the proportional gain and the integral gain, obtaining the differential gain in the PID control parameters; and finally carrying out constant-power grinding control on the numerical control grinding machine. The PID control parameters are adaptively adjusted based on the time sequence decomposition result of the power deviation, and the constant power control effect on the numerical control grinding machine is improved.

The utility model belongs to the technical field of separating devices, and relates to an oil-liquid separating device of a numerical control grinding machine tool, which comprises a separating cylinder, a filtering device, a machine frame and a separating motor, the separating cylinder is arranged on the lower portion of the machine frame, an oil-liquid tank, a rotating drum and a rotating shaft coaxial with the separating cylinder are arranged in the separating cylinder, and the lower end of the rotating shaft is connected with the separating motor. The oil liquid tank is coaxially suspended in the separation barrel, the filtering device is arranged above the oil liquid tank and comprises a filtering box, an electric heating strip, a magnetic stirring rod and a stirring rotating shaft, a filtering net disc is arranged at the bottom of the filtering box, and the upper end of the stirring rotating shaft is connected with a stirring motor. The electric heating strip melts greasy dirt condensed on waste chips and then flows into the lower separating barrel along with an oil-liquid mixture for centrifugal separation, a centrifugal separation method is adopted for oil-liquid separation, waste oil and cutting fluid are rapidly separated, and the recycling speed of the cutting fluid is increased.

The invention relates to the technical field of grinding machining, in particular to a complex curve indexable blade grinding method based on NURBS curve fitting, and the method comprises the following steps: S1, collecting and processing data, extracting coordinates, denoising and homogenizing the data; s2, performing NURBS curve fitting, and solving an equation to fit a curve; s3, back calculation of the adaptive interpolation curve is carried out, and curvature smoothness is verified; s4, curve machining acceleration and deceleration control, segmented acceleration and deceleration and dynamic parameter adjustment are carried out; and S5, the numerical control grinding machine executes machining, coordinate conversion is conducted, and real-time error monitoring is passed. Complex curve machining is achieved based on URBS curve fitting, a seven-section S-shaped curve acceleration and deceleration control algorithm is adopted, it is guaranteed that the machining speed reaches the planned maximum speed and cannot reach the planned maximum acceleration, acceleration sudden change is eliminated, mechanical shock and vibration are effectively reduced, and the machining precision is improved. And the requirements of different working conditions can be met by adjusting parameters such as the maximum speed, the maximum acceleration and the jerk.

The composite horizontal numerical control grinding machine comprises a grinding machine table, a polishing mechanism and a middle grinding mechanism, two sliding rails are fixedly installed at the top of the grinding machine table, and a first movable sliding frame is slidably installed on the outer sides of one ends of the two sliding rails; a clamping mechanism is fixedly installed at the top end of the first movable sliding frame. According to the scheme, when smoke dust absorption operation is needed, the powerful fan is started at the moment, air flow firstly passes through the air guide fan blades and rotates along with the hollow rotating shaft to achieve primary pushing, the air flow flows through the hollow rotating shaft and the middle positions of the middle barrel and the outer barrel, and smoke dust at the grinding position is pushed to a lathe five-jaw chuck; the air flow is intercepted and filtered through the step-by-step air filter plates which are distributed step by step, and the filtered smoke dust is stacked on the opposite side of the hollow clamping frame, so that the maintenance box can be conveniently and regularly opened for cleaning, the emission of the smoke dust can be conveniently reduced, and the efficiency of blowing the smoke dust by the air flow and the auxiliary cooling can be improved.

The invention discloses a grinding wheel state recognition method and system based on a multi-strategy improved DBO algorithm. The method comprises the steps that multi-sensor data of a numerical control gear grinding machine tool are collected, preprocessed and marked with abrasion labels; performing efficient global optimization on hyper-parameters of the CNN-BiLSTM-Attention model by adopting a multi-strategy improved dung beetle optimization algorithm fusing Logistic chaotic mapping initialization, a spiral search strategy optimization breeding stage and a Levy flight strategy optimization stealing stage; and finally, precise prediction and evaluation of the abrasion state of the grinding wheel are achieved through the optimized model. The system comprises a multi-source data preprocessing module, an intelligent hyper-parameter optimization module, a depth prediction model training module and a state prediction and performance evaluation module. According to the method, the problems that a traditional hyper-parameter optimization method is low in efficiency and prone to falling into local optimum are effectively solved, and the precision, convergence speed and working condition adaptability of a state recognition model are remarkably improved.

The invention provides a method for repairing photovoltaic aluminum profile H13 die steel through self-fluxing alloy powder. The method comprises the steps that (1) the self-fluxing alloy powder is prepared; (2) the H13 die steel to be repaired is subjected to surface cleaning and decontamination, annealing treatment and preheating; (3) adjusting parameters of an optical fiber laser cladding system, and feeding the self-fluxing alloy powder into a laser acting area of the optical fiber laser cladding system; in the laser scanning process, a laser beam heats a local area into molten alloy liquid; (4) the alloy liquid is conveyed to the surface of the H13 die steel to be repaired, and a laser beam and the alloy liquid interact to form a firm cladding layer; protective gas is introduced to help the self-fluxing alloy powder flow; (5) gradient cooling is conducted after stress relief annealing is conducted on the cladding layer, and a high-precision numerical control grinding machine is used for finishing and polishing; and repairing is completed. When the self-fluxing alloy powder is used for repairing the H13 die steel, the repairing quality can be improved, the performance of the repaired H13 die steel can be remarkably improved, the production cost is reduced, and the service life of the H13 die steel is prolonged.

The invention discloses a numerical control intelligent grinding machine programming system and method, and relates to the technical field of numerical control grinding machines. According to the technical key points, based on a machining information input module, a workpiece contour rapid identification module, a workpiece size accurate measurement module, a grinding program automatic generation module, a coordinate system calibration module, a program simulation verification module, a machining state data acquisition module and a grinding parameter optimization module, the size of a grinding workpiece blank can be accurately identified; according to the method, an executable program code file is generated, the numerical control guide rail grinding machine executes cutter parameters, machining parameters, G codes, interpolation precision and the like in the code file to achieve automatic machining, the grinding parameters are optimized in real time in the grinding process, and the method is simple, efficient, easy to use and high in engineering practicability.

The utility model relates to a three-jaw flexible floating chuck and a small workpiece cylindrical grinding machine. An oil cylinder of the three-jaw flexible floating chuck is a multi-rod hollow oil cylinder, piston rods are distributed at equal intervals, sliding rails are connected with the front ends of the piston rods corresponding to the sliding rails and are in axial sliding connection with the profiling templates corresponding to the sliding rails, inclined grooves serving as sliding plate guide grooves are formed in the sliding rails, and L-shaped guide grooves are formed in the inner walls, located on the outer sides of the sliding plate guide grooves, of the profiling templates. The outer side face of each sliding plate is provided with a profiling guide structure extending into the corresponding L-shaped guide groove, the profiling guide structures on the outer side faces of the sliding plates are in guide fit with the corresponding L-shaped guide grooves of the sliding plates respectively, and the clamping seats are located on the radial inner sides of the mounting plates on the corresponding sliding plates respectively and connected with the mounting plates. Live centers and the floating chucks are arranged on a headstock and a tailstock of the small workpiece cylindrical grinding machine, and the live centers penetrate through the hollow parts of the floating chucks. The small-sized workpiece cylindrical grinding operation requirement of the numerical control grinding machine can be better met.

The invention belongs to the technical field of composite material machining, and particularly relates to a composite material single-abrasive-particle grinding device and method at different temperatures, and the device comprises a numerical control grinding machine, a single-abrasive-particle scratching device, a real-time force measuring device, a temperature processing device, a five-degree-of-freedom motion platform and a real-time temperature measuring device; a workpiece is accurately fixed to the grinding machine workbench through the integrated force measuring mechanism, three-direction dynamic force data in the grinding process are collected in real time, and the workpiece clamping stability and the measuring precision are effectively improved. Meanwhile, the device is provided with a self-adaptive temperature measurement system, the height and the inclination angle of the temperature measurement probe can be automatically adjusted according to the position information of the workpiece, rapid positioning and accurate focusing of a measurement focus are achieved, and the accuracy and the operation convenience of temperature field measurement are remarkably improved. By integrating a high-precision force measuring mechanism and a self-adaptive temperature measuring system, multi-parameter synchronous acquisition and analysis of grinding force and a temperature field are realized, and comprehensive data support is provided for deep research on a composite material grinding mechanism.

The numerical control surface grinding, chamfering and rounding all-in-one machine comprises a machining all-in-one machine, a machining bin is formed in the upper left corner of the front end of the machining all-in-one machine, a bin door is connected to the upper side of the front end of the machining all-in-one machine in a sliding mode, and the bin door can slide to the front end of the machining bin for shielding. Storage mechanisms are arranged on the left side and the right side of the inner wall of the lower end of the machining bin correspondingly, a plurality of chamfering and rounding grooves with different inner diameters are formed in the cylindrical outer wall of a chamfering and grinding wheel, and the edge of a silicon wafer can be chamfered and rounded at different angles; chamfering rounding grooves with different inner diameters can be adjusted to be clamped at the two ends of a silicon wafer to meet different machining requirements, stretching and retracting between a clamping telescopic rod and a telescopic sliding sleeve are controlled through a hydraulic control mechanism, the clamping position and tightness can be controlled according to the radius of the silicon wafer, the chamfering rounding device is suitable for machining of the silicon wafers with different radiuses, the machining range is widened, and the machining quality is improved.

The application discloses a numerical control grinding machine grinding wheel mounting and dismounting device, and belongs to the technical field of numerical control grinding machines.It comprises a frame, a hand wheel, a transmission shaft, a front side mounting plate, a bearing seat mounting plate, a lead screw, a guide rail and a grinding wheel mounting mechanism.The frame bottom is provided with a foot wheel assembly.The frame is vertically provided with the front side mounting plate.The lead screw is rotatably arranged on the side wall of the front side mounting plate and is threadedly connected with the grinding wheel mounting mechanism.The guide rail is arranged beside the lead screw and is connected with the grinding wheel mounting mechanism.The front side mounting plate top is provided with the bearing seat mounting plate.The first end of the transmission shaft is connected with the hand wheel.The second end of the transmission shaft is connected with the lead screw.The hand wheel drives the transmission shaft to rotate, and then drives the lead screw to rotate through the transmission shaft to drive the grinding wheel mounting mechanism to lift and lower.The application can move the lifting grinding wheel mounting mechanism through the frame, and lift and lower the grinding wheel through the grinding wheel mounting mechanism, greatly reducing the difficulty of workers in dismounting and mounting the grinding wheel and ensuring the safety of dismounting and mounting.

The invention discloses an automatic ceramic grinding machine tool, and relates to the technical field of ceramic machining. A first motor is arranged in the first device shell, the rear end of the first motor is connected with the conveying mechanism, the right end of the first motor is connected with the limiting mechanism, and the first motor can drive the conveying mechanism or the limiting mechanism to operate; a driving mechanism is arranged in the second device shell, the right end of the driving mechanism is connected with a reciprocating lead screw body, a lead screw sleeve is arranged on the outer side of the reciprocating lead screw body, the top of the lead screw sleeve is fixedly connected with a control base, the top of the control base is connected with a numerical control grinding machine, and the right end of the driving mechanism is connected with a limiting mechanism. The driving mechanism drives the limiting mechanism and the reciprocating lead screw body to operate, after the limiting mechanism limits and fixes the ceramic workpiece, the driving mechanism can drive the control base and the numerical control grinding machine to freely adjust the position, and therefore the numerical control grinding machine can automatically cut the ceramic workpiece more conveniently.

The invention relates to the technical field of mechanical engineering, and discloses a special valve sealing element integrated machining process which comprises the following steps: S1, carrying out ultrasonic cleaning on a high-performance stainless steel or titanium alloy base material to remove oil stains and impurities on the surface; s2, performing one-time rough machining on the outer circle, the inner hole and the end face of the base material by using a five-axis numerical control lathe; s3, the multiple sealing elements are connected into a whole through TIG welding or high-strength epoxy resin bonding; s4, a numerical control grinding machine is adopted for conducting finish machining on the sealing face, and polishing liquid is matched with an automatic polishing machine to enable the surface roughness to meet the design requirement; an anti-corrosion coating is sprayed on the sealing surface according to use requirements; and S5, ultrapure water in a dust-free room environment is adopted for cleaning and drying, and then a pressure sealing test, a temperature resistance test and a corrosion resistance test are conducted. Through TIG welding, hot press molding and X-ray nondestructive testing, connection of multiple parts on the molecular level is achieved through the technology, and defects at joints are reduced.

The invention discloses a numerical control grinding machine machining precision control method and system, a medium and a product and relates to the field of numerical control machining. According to the method, a digital geometric model of a workpiece to be machined is obtained, and a preset machining tool path is generated; curvature gradient analysis is carried out on the digital geometric model along the preset machining tool path, and a local mutation area is obtained; generating a prediction compensation value based on the curvature and the curvature change rate of each processing point on the preset processing tool path and the relative position of each processing point and the local sudden change area; in the machining process, the machining deviation between the actual machining contour of the current machining point and the digital geometric model is obtained, and feedback correction is generated based on the machining deviation; and performing weighted fusion on the feedback correction amount corresponding to the current processing point and the predicted compensation value to generate a composite correction instruction, generating final process parameters based on the composite correction instruction, and controlling the numerical control grinding machine to execute the final process parameters. According to the technical scheme, the workpiece machining precision is improved.

The utility model provides a grinding wheel set high-precision rapid replacement structure and a numerical control grinding machine applying the same. The grinding wheel set high-precision rapid replacement structure comprises a main shaft driving module and a main shaft. The grinding wheel library is mounted on one side of the axial direction of the main shaft and comprises a rotating module, and a plurality of grinding wheel sets are distributed on the rotating module in the circumferential direction; the main shaft is installed on the main shaft driving module to move in multiple directions, the grinding wheel library is installed on one axial side of the main shaft, the rotating module rotates to enable the needed grinding wheel set to coaxially face the main shaft and conduct translation butt joint assembly, replacement of the grinding wheel set is fast and efficient, and the machining capacity of a machine tool is guaranteed. The technical problems that in the prior art, a grinding wheel set in the state directly machines a workpiece and cannot move in multiple directions, and consequently the machining capacity is limited are solved.

The invention discloses a shaft cylindrical surface numerical control grinding machine and method for roll shaft machining, and relates to the technical field of numerical control grinding machines. The shaft cylindrical surface numerical control grinding machine for roll shaft machining comprises a grinding machine body, and the grinding machine body is provided with a clamping assembly used for fixing a roll shaft, an adjusting assembly used for detecting the grinding state and changing the position of the roll shaft and an auxiliary assembly used for keeping the precision of the detection result of the adjusting assembly. The sensor is slidably mounted in the collecting tank and is driven by external force to change the position so as to adjust the detection position; by monitoring and adjusting the contact state between the roller shaft and the grinding wheel in real time, the contact uniformity in the grinding process can be ensured, the problems of surface defects, size deviation and the like caused by uneven contact can be reduced, and therefore the machining quality and precision of workpieces are improved, and the machining efficiency is improved. And meanwhile, the refined control mechanism is also beneficial to keeping the correct geometrical shape of the grinding wheel, and the wear rate of the grinding wheel can be reduced.

The invention relates to the technical field of workpiece grinding, and discloses a high-precision five-axis numerical control grinding machine which comprises a supporting assembly, a first adjusting unit and a second adjusting unit are arranged above the supporting assembly, and the first adjusting unit comprises a second driving motor. An adjusting plate is arranged at the output end of the second driving motor through a second lead screw thread, the second driving motor can drive the adjusting plate to move in the linear direction of the surface of the second lead screw, and a connecting arm is arranged above the adjusting plate through a supporting frame; through the contact plates hinged to the clamping blocks, the built-in strain gauges and the electric connection pressure sensors, in cooperation with the electromagnets, the curved bars and other structures, the contact pressure can be detected in real time, chippings and burrs can be actively removed, it is ensured that the workpieces are completely attached to the clamping faces, machining displacement is avoided, the polishing precision is remarkably improved, and the problem that when the columnar workpieces / jigs are polished, the machining efficiency is high is solved. The problems of false positioning caused by cuttings and dust and machining displacement caused by burrs and hard spots on the surface of a workpiece are solved.

This invention discloses an integrated CNC grinding and polishing device for profile surface processing, relating to the field of profile grinding. It primarily addresses the problem of converting the horizontal linear motion of a workpiece into a continuous attitude transition motion from horizontal to vertical, enabling continuous grinding of different angles and areas of the workpiece. This invention utilizes an automatic attitude transition component to convert the workpiece's horizontal movement within the grinding gap into a gradual approach towards a vertical position. During this attitude transition, the workpiece's position within the grinding gap is automatically and dynamically adjusted. Specifically, this involves converting horizontal linear displacement into deflection until the workpiece reaches the desired surface for processing. This process enables continuous grinding of profiles at different angles and in different areas, meeting the grinding requirements of irregularly shaped profiles and complex surfaces, and improving grinding adaptability.

The utility model relates to the technical field of grinding machine double-grinding-head mechanisms, and discloses a double-grinding-head mechanism for a five-axis numerical control tool grinding machine, which comprises a fixing frame, a special-shaped workpiece is arranged on the left side of the fixing frame, and an adaptive mechanism is arranged above the fixing frame; the adaptive mechanism comprises two sliding seats, each sliding seat is slidably connected to the interior of the fixing frame, the inner walls of the two sliding seats are fixedly connected with limiting cylinders, and the outer surface of each limiting cylinder is fixedly connected with a sliding frame. According to the double-grinding-head mechanism for the five-axis numerical control tool grinding machine, the two grinding discs can be staggered by a certain distance, so that two non-perpendicular end faces on a special-shaped workpiece can be ground at the same time, the adaptability of the double-grinding-head mechanism for the five-axis numerical control tool grinding machine is improved, and the double-grinding-head mechanism can be used for grinding the two end faces of the workpiece at the same time; and meanwhile, the double-grinding-head mechanism can better adapt to special end faces on special-shaped workpieces, and the workpiece grinding adaptability of the double-grinding-head mechanism for the five-axis numerical control grinding machine is improved.

The utility model relates to the technical field of water pump rotor machining equipment, in particular to a numerical control grinding machine. The grinding wheel assembly composed of the servo motor and the grinding disc in transmission connection with the output shaft of the servo motor is adopted, and the servo motor at least comprises two different output rotating speeds and is matched with different materials of the rotating shaft, so that the rotating shaft can be ground at different output rotating speeds according to different materials of the rotating shaft; the outer diameter of the rotating shaft is detected through the detection assembly, when it is detected that the outer diameter of the rotating shaft meets the target requirement, the result is fed back to the controller, the controller controls the servo motor to stop grinding, the servo motor high in control precision and stability is adopted, and control over grinding precision improvement is facilitated.

The invention relates to the technical field of manufacturing and processing of marine turbochargers, in particular to a method and a device for processing a ring thrust bearing of a marine supercharger, which are characterized in that after a set of preparation process including rough turning, heat treatment, semi-finish turning and inner hole accurate grinding is adopted, a special taper mandrel for grinding is used for clamping the bearing, and the bearing is clamped by a conical mandrel for grinding; the taper mandrel for grinding has the precise taper of 1: 5000, high surface quality and rigid design matched with the length of a bearing, accurate grinding of all outer circles and end faces is completed through one-time clamping of double tips of a numerical control grinding machine, and online detection is achieved in cooperation with a special auxiliary detection tool. The problem that the form and position precision is difficult to guarantee due to clamping deformation and repeated positioning errors in traditional machining is effectively solved, and therefore high-precision (such as roundness, coaxiality and parallelism are in the micron level), low-deformation, efficient and stable machining is achieved at the same time in the manufacturing process of the large thin-wall annular thrust bearing.

The present invention belongs to the technical field of machining, and relates to a fixture and a machining method for machining a keyway-oriented high-precision crankshaft. The method includes: 1) Assembling the A section of the keyway-oriented high-precision crankshaft into the crankshaft clamping hole of the eccentric sleeve; 2) Extending the orientation pin from the crankshaft clamping hole into the keyway-oriented high-precision crankshaft; 3) Installing the eccentric sleeve equipped with the orientation pin and the keyway-oriented high-precision crankshaft into the high-precision three-jaw inner hole of the CNC grinding machine; 4) Checking the runout of the outer circle of the B section of the keyway-oriented high-precision crankshaft; 5) Grinding the outer circle of the B section of the keyway-oriented high-precision crankshaft. The present invention provides a fixture and a machining method for machining a keyway-oriented high-precision crankshaft that can ensure product quality and improve machining efficiency.

The utility model relates to the technical field of grinding equipment, in particular to CNC grinding equipment capable of automatically collecting sweeps. Comprising an adjusting device, the adjusting device comprises a fixing frame, the fixing frame is fixedly connected with the output end of a power device, an adjusting groove is formed in one side of the fixing frame, two sliding blocks are slidably connected to the inner wall of the adjusting groove, and a connecting plate is fixedly connected to the side, close to the adjusting groove, of the fixing frame; one side of the connecting plate is fixedly connected with a motor, and the output end of the motor is fixedly connected with a two-way screw rod. According to the CNC grinding equipment capable of automatically collecting the sweeps, when the surfaces of parts are ground through the grinding equipment, the sweeps splashed in the grinding process can be collected through the adjusting device, the sweeps are prevented from being scattered to the ground and influencing the whole working environment, meanwhile, dust pollution can be reduced, and the production efficiency is improved. And the working safety of workers near the grinding equipment is improved.

The utility model relates to a numerical control grinding machine with a feeding and discharging mechanism, and relates to the technical field of numerical control grinding machines. The numerical control grinding machine comprises a rack, a chuck seat and a grinding wheel seat are installed on the rack, a driving assembly is arranged on the rack and used for driving the chuck seat and the grinding wheel seat to move on the rack, a material disc assembly is arranged on one side of the rack, and a material disc is arranged on the other side of the rack. The tray assembly is used for placing parts to be machined and finished parts; a clamping jaw assembly is arranged on the machine frame and used for clamping a part. The rack is further provided with a moving assembly, and the moving assembly is used for driving the clamping jaw assembly to move between the material disc assembly and the chuck base. The operation of feeding and discharging by workers is omitted, manpower resources are saved, the production cost is reduced, manual installation is omitted, deviation is not prone to occurring, and potential safety hazards are reduced.

The present application relates to worm grinding wheel gear grinding surface texture active regulation method based on micro pulse grinding. It includes the following steps: using white light interferometer to measure the surface morphology of the gear generated under the conventional grinding mode, and obtaining the accurate information of the texture ditch height; the height of the texture ditch is used as a reference to determine the micro pulse amplitude, and the pulse frequency is set to generate the micro pulse grinding program; the changed NC program is copied to the designated folder of the numerical control gear grinding machine numerical control system and replaces the original program, and the micro pulse grinding is carried out. The micro pulse grinding processing mode proposed in the present application can generate the network texture along the contact trace direction and along the direction of the tooth, which changes the single regular texture along the direction of the tooth under the conventional grinding mode, so as to help to improve the performance of the gear, reduce the surface defects, improve the surface quality, and help to reduce the meshing impact and reduce the noise.