493 results about "Machined surface" patented technology

The invention relates to the technical field of numerical control machining measurement and correction, and discloses a machining surface correction method for a numerical control milling center. The method comprises the steps of establishing an original point cloud of a processing surface and extracting a feature structure; analyzing each feature structure to form a structured description list; inputting the list into a geometric growth model, and generating a virtual feature structure set according to rule iterative evolution; extracting and rasterizing the contour and the height field, carrying out registration fusion with a reference plane equation, and carrying out variation calculation to obtain a smooth middle geometric surface; performing adaptive resampling on the intermediate surface to generate an intermediate point cloud; and finally, according to the spatial frequency distribution of a topological residual field formed by the difference between the original point cloud and the intermediate point cloud, adaptively determining a weight, and carrying out weighted mixing on the original point cloud and the intermediate point cloud to generate an optimized surface point cloud. According to the method, intelligent evolution of the machined surface features and frequency domain self-adaptive data fusion are achieved, and the correction machining precision and the surface forming quality are improved.

The invention belongs to the technical field of heavy machine tool machining, and particularly relates to a transmission structure for heavy horizontal machine tool machining and a machining method. Comprising a moving seat, the two ends of the upper surface of the moving seat are fixedly connected with a tool apron and a skewness measuring assembly respectively, the skewness measuring assembly comprises a measuring tool connecting arm, the measuring tool connecting arm comprises a first measuring tool arm, one end of the first measuring tool arm is rotationally connected to a lifting seat and is in transmission connection with a stepping motor, and the stepping motor is fixedly connected to the lifting seat. The device can assist a wheel velocimeter in more conveniently and accurately measuring the rotating speed and the skewness of the outer surface of a turning billet in real time, and is more convenient for lifting a workpiece, so that cuttings generated in turning are reduced, and the cuttings are prevented from scratching the machined surface; built-up edges can be reduced, the surface smoothness is improved, and the surface roughness is reduced; and in the turning process, the turning speed is adjusted in real time along with the change of the shape and the quality of the machined steel blank so as to keep the optimal turning rotating speed.

The invention discloses a material cutting performance evaluation method, device and equipment and a medium, and the method comprises the steps: controlling a milling cutter of a milling machine to mill a to-be-tested material according to preset milling parameters in a feeding direction perpendicular to the to-be-tested material under the condition that a test state is satisfied between fixed equipment and the to-be-tested material, so that a milling surface is formed on the to-be-tested material; controlling the force measuring equipment to monitor the actual milling force applied to the to-be-measured material by the milling cutter in the milling process; roughness detection equipment is controlled to detect the milling face, and the actual roughness is obtained; and evaluating the cutting performance of the to-be-tested material according to the actual milling force, the actual roughness and a preset index. Therefore, by integrating milling, real-time force measurement and surface roughness detection, a set of multi-index collaborative comprehensive evaluation system is constructed, and the cutting force and the machined surface quality can be quantitatively acquired and analyzed at the same time, so that the cutting machining performance of the material is simply, quickly, comprehensively and objectively reflected.

The utility model discloses an indexing positioning right-angle milling head which comprises a right-angle transmission box, a connecting disc fixedly connected above the right-angle transmission box, a milling cutter butt joint piece fixedly connected with one side of the driving end of the right-angle transmission box in a butt joint mode, a milling cutter head rotationally connected with one side of a transmission shaft of the milling cutter butt joint piece, and an oil inlet pipe fixedly connected with one side of the oil inlet end of the right-angle transmission box. A cooling assembly is fixedly connected to the side surface of the milling cutter butt-joint piece close to the milling cutter head; by means of the adjustable cooling system, the spraying angle and the atomization effect of cooling liquid can be dynamically adjusted according to the real-time temperature of the milling cutter head, it is guaranteed that a cutting area is in the optimal cooling state all the time, a cooling blind area caused by traditional fixed spraying is avoided, and the influence of excessive splashing of the cooling liquid on the machining precision is effectively prevented; and the service life of the cutter is prolonged.

By analyzing the micro-texture of the machined surface, inverse estimation of tool mounting eccentricity is realized on the machine tool. [Solution] Under predetermined workpiece parameters, simulation machining is performed based on multiple parameter sets obtained based on different tool parameters, tool attitude parameter settings, and cutting parameters, and the surface shape after machining for each parameter set is obtained. An optimization variable set is constructed based on each parameter set, and the optimization variable set when waviness is most sensitive to changes in tool mounting eccentricity is determined. The tool mounting eccentricity during machining of the workpiece sample is calculated using the constructed relationship between the tool mounting error and the peak-to-peak value of waviness. If the tool mounting eccentricity exceeds the predetermined value, the bull nose end mill is reattached and the workpiece sample is replaced so that the workpiece can be actually machined, and this calculation of tool mounting eccentricity is repeated until the tool mounting eccentricity becomes smaller than the predetermined value.

A dual-path laser-assisted machining system includes a tool; a first laser emitting device; and a second laser emitting device. The first laser emitting device can emit laser to a machining surface of a workpiece and form a first irradiation area. The second laser emitting device can emit laser to the machining surface of the workpiece and form a second irradiation area. The first irradiation area and the second irradiation area have an overlapping area. A machining point of the tool on the machining surface falls within the overlapping area. An angle between a projection of a line connecting the first laser emitting device and the tool on the machining surface and a projection of a line connecting the second laser emitting device and the tool on the machining surface is not 0°.

The application relates to a device and method for electrostatic induction and sound surface wave mask electrolytic machining, belonging to the electrolytic machining field. The pump, the liquid storage tank and the electrolytic tank are connected to realize electrolyte circulation. The various components in the electrolytic tank are riveted. The anode and cathode assemblies and the shielding induction electrode assembly are inserted into the electrolytic tank. The positive and negative poles of the power supply are connected with the anode and cathode plates in the anode and cathode assemblies respectively, and the workpiece arranged in the induction electrode assembly is arranged in the electric field between the anode and cathode plates. The piezoelectric ceramic is attached to the base plate of the induction electrode assembly, and the signal generator and the power amplifier are connected with the piezoelectric ceramic. Based on the device, the piezoelectric ceramic is connected with a megasonic driving voltage to generate a surface wave on the surface of the workpiece; the anode and cathode plates are connected with direct current, and the workpiece is arranged in the electric field formed by the anode and cathode plates, so that the surface to be machined of the workpiece is subjected to oxidation reaction, and the non-machining surface is subjected to reduction reaction, thereby realizing wireless induction machining of the workpiece. The application has the advantages of simple operation, re-distribution of the electric field, enhancement of mass transfer, improvement of mask electrolytic machining precision, arrangement of multiple workpieces in the electric field formed by the anode and cathode plates, and substantial improvement of mask electrolytic machining efficiency.

The utility model relates to the technical field of cutting knives, and discloses a cutting knife, processing equipment and a machine tool, the cutting knife is characterized in that a blade body is arranged in a cross section perpendicular to an axis, two front knife faces and two rear knife faces form a centrosymmetric quadrangle, adjacent front knife faces and rear knife faces form cutting blades, and the cutting blades are arranged in the quadrangle and on the same side of the axis; an included angle alpha is formed between the rear tool face and the machining reference face of the rear tool face, the included angle alpha is larger than or equal to 0.5 degree and smaller than or equal to 20 degrees, and the blade body is provided with two machining reference faces which are symmetrically located on the two sides of the axis of the blade body and parallel to the axis. By means of the structure, the cutter does not need to machine a roll angle in the machining process, the one-way cutting edge is tightly attached to the machining arc face, residues on the machined face are reduced, machining quality is improved, and high-precision machining is achieved.

The invention discloses a double ultrasonic vibration and low-temperature minimal quantity lubrication composite milling device which comprises an ultrasonic milling assembly, the ultrasonic milling assembly comprises a milling cutter, an ultrasonic cutter handle, a first transducer, a first ultrasonic generator and a main shaft, a to-be-machined workpiece is clamped on a workbench, the milling cutter is located above the workbench and arranged on the ultrasonic cutter handle, and the first transducer is connected with the first ultrasonic generator. The ultrasonic cutter handle is arranged on the main shaft, the main shaft is connected with the main shaft feeding mechanism, the first ultrasonic generator is connected with the ultrasonic cutter handle through the first transducer, the injection direction of the low-temperature cutting fluid injector is aligned with a contact area of the milling cutter and a workpiece to be machined, and the vibration equipment is arranged on an injection path of the low-temperature cutting fluid injector. The ultrasonic vibration generating device is used for conducting ultrasonic vibration on the low-temperature cutting fluid, so that the ultrasonic cavitation effect of the cutting fluid is excited, the cutting fluid can conduct ultrasonic cleaning on the machining surface of a workpiece and the surface of a cutting edge of a milling cutter, and the situation that the surface of the workpiece is scratched by residual cuttings is reduced.

The invention mainly relates to the field of cutting, cooling and chip removal, in particular to a cutting, cooling and chip removal device for a numerical control horizontal boring and milling machine and a using method of the cutting, cooling and chip removal device. The device comprises a base, the base is provided with two supporting longitudinal beams which are symmetrically distributed, longitudinal sliding devices are fixedly installed on the opposite sides of the supporting longitudinal beams, a fixing support is fixedly installed at the driving ends of the longitudinal sliding devices, an angle adjusting assembly is installed on the bottom face of the fixing support, and an attaching support is installed on the bottom face of the angle adjusting assembly. The angle adjusting assembly can control the approaching support to rotate. And a cooling jet assembly and a chip removal assembly are mounted close to the bottom surface of the bracket. The angle adjusting assembly flexibly adjusts the angle position of the attaching support, so that the bottom end of the attaching support makes contact with the workpiece machining surface, the inclined movement angles of the cooling nozzle, the high-pressure injection mechanism and the low-pressure overflow mechanism are conveniently adjusted in an auxiliary mode, subsequent cooling and chip removal treatment on the workpiece machining area are facilitated, the workpiece does not need to be disassembled, and the machining efficiency is improved. And the cooling and chip removal efficiency of a workpiece machining area is improved.

The invention discloses an ultrasonic vibration auxiliary milling method for a Ti2AlNb material, and belongs to the technical field of alloy material machining. The method comprises the following steps: removing a surface oxide layer from a Ti2AlNb material piece; the Ti2AlNb material piece is subjected to longitudinal-torsional composite ultrasonic vibration auxiliary milling machining; wherein the longitudinal-torsional composite ultrasonic vibration is used for assisting milling, and the vibration parameters of the longitudinal-torsional composite ultrasonic vibration are as follows: the torsional vibration tangential line amplitude is 4-8 microns, the ultrasonic frequency is 20-30 kHz, the longitudinal vibration amplitude is 3-6 microns, and the phase difference is 90 degrees. According to the method, the Ti2AlNb material piece with the machining surface small in roughness value and large in residual compressive stress value is finally obtained, harmful tensile stress of the machining surface obtained through pure milling machining is converted into compressive stress, generation of microcracks can be effectively restrained, and the service life of the material is prolonged.

The utility model provides a handheld plate chamfering machine which comprises a tool bit. The tool bit is connected with a driving device, a positioning mechanism is arranged on the front portion of the tool bit, a positioning structure sliding in the radial direction of the tool bit is arranged on the positioning mechanism and used for being matched with a workpiece for positioning, and the tool bit is provided with a machining surface. The positioning mechanism is arranged to position a plate in two directions, so that the position of the plate cannot be changed when the corners of the plate are treated, meanwhile, the corners of the plate are cut through the cutting knife, corner cutting is accurate, the device is simple in structure and convenient to use, and a handheld structure is convenient to carry.

The application belongs to the field of cutting processing, and discloses a kind of fiber reinforced thermoplastic resin matrix composite peripheral milling temperature prediction method, three heat sources of plastic deformation heat source, rake face and chip friction heat source, friction heat source of relief surface and machined surface are fully considered, and the total heat production of cutting in peripheral milling process is determined accordingly;On this basis, the anisotropic characteristics of the composite material are fully considered, and the distribution ratio of the total heat production of cutting in the tool, the workpiece and the chip is solved;And finally, a thermoplastic composite peripheral milling temperature prediction method is formed, and the accuracy of the calculation method is verified by experiment.The method disclosed by the application is simple in form and practical in function, and can greatly improve the accuracy of thermoplastic composite peripheral milling temperature prediction, thereby helping to promote the development of high-quality milling of thermoplastic composite.

The application is a kind of fiber reinforced ceramic matrix composite surface three-dimensional roughness detection method and system, belongs to the technical field of material processing surface quality detection;Method is, first scanning fiber reinforced ceramic matrix composite processing surface to get the original processing surface three-dimensional model, and export point cloud data;Secondly, the coordinate transformation processing is carried out to the original three-dimensional model point cloud data, and the model is put right, the height difference of adjacent point cloud data is taken as the feature, the abnormal data points are screened and removed, the internal hole exposed on the processing surface is removed, the processing surface is reconstructed and the three-dimensional roughness S a Is calculated;Then determine the measurement area;Finally, according to the determined measurement area, the above scanning, hole removal, model reconstruction, S a The calculation work, namely the three-dimensional roughness of the processing surface is determined. The three-dimensional surface roughness value calculated by the application is no longer affected by the hole data, which ensures the effectiveness of the data.

The application discloses a device and a process for laser ablation induced controllable damage assisted grinding of hard and brittle materials, which adopts laser irradiation on the material surface, focuses the laser focal point on the material surface to be processed, removes and induces specific depth damage to the material by ablation. By controlling the laser power, scanning speed and ablation track, the degree and type of laser ablation induced thermal damage of the material are effectively controlled. The grinding path of the grinding wheel and the ablation path of the laser are controlled on the same axis, and the distance between the laser ablation and the grinding wheel grinding is set, and the workpiece ablation surface is ground under the preferred grinding parameters. The application systematically puts forward a quantitative control strategy for the degree of laser ablation damage of the material surface, removes the laser induced damage layer by accurate control of the material surface damage and precision grinding, and realizes high-efficiency and high-quality processing of the hard and brittle materials.

The application provides a processing parameter optimization method based on a GRA-CRITIC-TOPSIS method and processing surface integrity multi-indexes, and belongs to the technical field of high-efficiency precision processing. In view of the problems that the influence of processing parameters on workpiece surface integrity multi-indexes is complex in difficult-to-machine material milling processing, and the expected results of various indexes are contradictory, the grey correlation analysis method (GRA), the CRITIC objective weighting method and the ideal point method (TOPSIS) are organically combined, and a more scientific and comprehensive multi-objective processing parameter comprehensive optimization model is constructed. The method introduces the CRITIC objective weighting, the weight calculation is more reasonable, the index information overlap can be effectively avoided, and the optimization result has higher engineering reliability.

The utility model discloses an aluminum plate processing surface pattern rolling forming device, which relates to the technical field of aluminum plate surface treatment, and comprises a base, support plates are fixedly arranged at the upper ends of the two sides of the outer wall of the base, sliding holes are formed in the two support plates, rotating pipes are arranged in the sliding holes in a sliding and penetrating manner, and rotating columns are rotationally arranged in the two rotating pipes. Rotating plates are fixedly arranged at the ends, close to each other, of the two rotating columns, a plurality of rotating rods which are symmetrically arranged in a surrounding mode are jointly and fixedly arranged on the sides, close to each other, of the two rotating plates, the rod walls of the rotating rods are rotationally sleeved with embossing rollers, a driving motor is fixedly arranged at the lower end of the outer wall of the supporting plate, and the tail end of an output shaft of the driving motor penetrates out of the supporting plate and is fixedly provided with a driving shaft; the shaft wall of the driving shaft is fixedly sleeved with a driving roller. According to the knurling device, the knurling rollers are matched in a rotating and transposition mode, knurling forming of different patterns can be conducted on the surface of an aluminum plate, and the using multifunctionality of the knurling device is improved.

The invention belongs to the technical field of metal bar peeling, and particularly relates to a copper bar primary machining surface black skin peeling device and method.The device comprises a peeling mechanism, a feeding mechanism is arranged on the right side of the peeling mechanism, copper bars are stacked on the feeding mechanism, a drawing mechanism is arranged on the left side of the peeling mechanism, and a positioning mechanism is arranged on the front side of the feeding mechanism; an adapting mechanism is arranged on the lower side of the positioning mechanism, and an abutting mechanism is arranged between the right end of the adapting mechanism and the right end of the positioning mechanism. Through linkage self-adaptive adjustment of the positioning mechanism, the adaptive mechanism and the debugging mechanism and the design of the gradually-changed guide hole of the guide mechanism, automatic positioning and accurate centering of the copper bar are achieved, manual handheld operation is not needed, the labor intensity is reduced, the machining efficiency is improved, the problem of coaxiality deviation caused by manual positioning is avoided, and the production efficiency is improved. The defects of uneven peeling, surface scratching and the like are effectively reduced, and the basic quality of copper bar peeling processing is remarkably improved.

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 discloses a double-sided milling cutter capable of rotating automatically, the double-sided milling cutter comprises a cutter body and a plurality of wheel-shaped blades, the cutter body comprises a milling surface for milling, the plurality of blades are uniformly arranged on the milling surface around the axis of the milling surface, and the movement direction of the blades intersects with the axis. By arranging the self-rotating blade, all the cutting edges on the circumference of the blade uniformly participate in cutting, the installation angle of the blade does not need to be replaced by manual shutdown, and the extrusion force between the blade and a workpiece can be reduced, so that the cutting feeding speed is greatly improved, and all the cutting edges on the circumference of the blade are ensured to uniformly participate in cutting; meanwhile, through continuous rotation of the blade, the chip removal performance and the heat dissipation performance in the cutting process are improved, the service life of the cutter is effectively prolonged, and defects of the machined surface are restrained.

The invention relates to the technical field of part machining, and discloses a multi-station anti-vibration cutter stabilizing mechanism for carbon fiber part machining, which comprises a cutter chuck arranged on machining equipment; the milling cutter is used for machining parts; and the clamping mechanism is arranged on the cutter chuck and used for stably clamping the milling cutter, the clamping mechanism comprises a hollow sleeving ring, and the hollow sleeving ring axially moves after rotating. According to the multi-station anti-vibration cutter stabilizing mechanism for machining the carbon fiber parts, the positioning mechanism is arranged, and an axial hard positioning structure capable of being locked is arranged at the end of a milling cutter, so that end mechanical jacking and position locking are synchronously achieved after radial clamping of the cutter is completed, and the overall axial supporting rigidity of the cutter is remarkably improved; axial micro-motion and chatter caused by axial cutting force change and multi-station frequent reversing in the carbon fiber machining process are effectively restrained, and the quality defects such as layering and chatter marks on the machined surface are avoided.

The application discloses a kind of numerical control processing surface roughness prediction method, comprising the following steps: processing experiment is carried out, and cutting and segmentation are carried out, obtain the three-dimensional cutting force signal data of each sample, and obtain the processing surface roughness numerical value;Adopt time series dimension reduction algorithm to obtain the three-dimensional cutting force data of consistent length;With the three-dimensional cutting force data of consistent length as feature vector, with the processing surface roughness numerical value as label value, data merging is carried out, and three groups of prediction data sets are formed;Convolutional neural network prediction model is built, model training and structure evaluation are carried out, and the cutting force direction and convolutional neural network prediction model with the highest prediction accuracy are screened out;Roughness prediction is carried out using the screened convolutional neural network prediction model.The application has the beneficial effects that: reduce human intervention, improve the intelligent degree of prediction process;Reduce workload, improve prediction efficiency and promote the improvement of production efficiency.

The utility model relates to the technical field of end flattening machines, one embodiment of the utility model provides an end flattening machine for pipe fitting machining, the end flattening machine for pipe fitting machining comprises a protection plate, the top of the protection plate is fixedly connected with a supporting frame, and the side face of the supporting frame is fixedly connected with a supporting block; a fixing device is arranged at the top of the protection plate and comprises a motor, the motor is fixedly connected to the side face of a supporting block, an output shaft of the motor is fixedly connected with a rotating rod, the circumferential face of the rotating rod is fixedly connected with a gear, and the side face of the supporting block is fixedly connected with a fixing block. According to the technical scheme, the technical problems that the effect of fixing the pipe fitting is difficult to achieve, the machining precision of the pipe fitting is not favorably guaranteed, machining errors caused by movement or deformation of the pipe fitting are increased, the smoothness and uniformity of the machined surface are difficult to guarantee and the machining quality is reduced in the related technology / the prior art are solved.

The invention belongs to the field of corrosion fatigue performance, and particularly discloses a milling workpiece corrosion fatigue life prediction model construction method and a process parameter optimization method.The milling workpiece corrosion fatigue life prediction model construction method comprises the steps that a surface quality prediction model is constructed based on process parameters and corresponding workpiece surface states obtained through tests, and the workpiece surface states comprise surface roughness and hardness; introducing a fatigue stress concentration factor and a work hardening ratio into the initial fatigue life model to respectively reflect local stress concentration caused by surface topography and machining surface hardening caused by milling, and performing surface roughness correction and surface hardness correction on the initial fatigue life model; obtaining a fatigue life model related to the surface state of the workpiece and the corresponding corrosion fatigue life; and combining the surface quality prediction model and the fatigue life model to form a corrosion fatigue life prediction model of the milling workpiece. According to the method, corrosion fatigue life prediction and process parameter optimization of the nickel-aluminum bronze milling workpiece can be realized, and important guidance is provided for actual processing.

This invention relates to the field of low-speed diesel engine manufacturing technology, and discloses a fixed template device and its manufacturing method, as well as a fixed template method for starting air pipes. After the first connecting block and the second connecting block are installed, the surfaces of the two connecting blocks that connect with the flanges are machined. The machining dimensions and angles are determined according to the relative spatial positions of the flanges at both ends of the air pipe, forming the first connecting disc and the second connecting disc. The center point of the flange on the machined surface is then determined, and threaded holes for connection with the flanges are drilled to improve subsequent assembly accuracy. The flanges at both ends of the starting air pipe to be machined are fixed using the threaded holes of the first connecting disc and the second connecting disc, and the template assembly is spot welded. This improves the positioning accuracy of the flanges at both ends of the starting air pipe during template assembly, solves the problem of difficult installation due to manufacturing accuracy issues, reduces on-site matching and rework operations during the installation and use of the starting air pipe due to poor weld quality, and improves production efficiency and product quality.

This invention discloses a method for visualizing the surface quality of machined parts based on GPU and mesh search algorithms, belonging to the field of machining technology. The method includes acquiring tool point cloud data and discretizing it to construct a three-dimensional mesh structure surrounding the point cloud; linearizing the three-dimensional mesh data into a one-dimensional array and packaging it; creating four types of structured GPU computing buffers to achieve batch data transmission; utilizing GPU shader programs to achieve parallel data access and fast local neighborhood queries; completing high-precision real-time reconstruction of fragment surface normal vectors through neighborhood search and signed projection distance calculation; and outputting realistic rendering results based on an optimized Phong lighting model. This invention leverages the advantages of GPU parallel computing to accurately reproduce complex textures, microstructures, and special curved surfaces, making it suitable for surface quality inspection, wear assessment, and process optimization of milled parts and tools.

This utility model relates to the field of graphite processing technology, specifically disclosing a graphite processing surface treatment device, including a frame and a motor steering wheel assembly. An extended lifting plate is fixedly installed on the outer surface of the frame, and support rollers are uniformly fixedly installed on the outer surfaces of both ends of the frame. During processing, this graphite processing surface treatment device only requires placing the graphite on the outer surface of the support rollers to lift it up and bring it into contact with the output end surface of the motor steering wheel assembly. Then, the motor steering wheel assembly is activated to rotate the graphite, allowing the drive motor to move the lifting support block via a screw. The lifting support block moves along the direction of the guide rail assembly, moving the grinding motor wheel assembly along with it. This allows the grinding motor wheel assembly to gradually move and grind the surface of the graphite without clamping or adjusting the graphite's position, improving processing stability, convenience, and speed.

The utility model discloses a streamline shock-resistant damping boring bar, which relates to the technical field of metal hole machining, and comprises a chip pocket a, a damping groove, a boring bar, a cutter head, a chip pocket b and a blade, the cutter head is connected with the boring bar, the chip pocket a, the damping groove and the chip pocket b are arranged on the cutter head, the blade is fixedly arranged at the top of the cutter head, and the chip pocket b is arranged in the damping groove. The chip pocket a is located in the middle of the tool bit, the chip pocket b is located at the lower end of the tool bit and connected with the chip pocket a, a clamping assembly is arranged at one end of the boring rod, and an anti-vibration assembly is arranged in the boring rod. The deep hole machining universality is guaranteed, the working efficiency is improved, the workpiece machining surface quality is improved, the production quality is greatly improved, the inner hole machining surface quality is improved, the workpiece is prevented from vibrating a cutter, scrap iron is smoothly discharged, the machining quality is improved, the equipment adjusting period is shortened, and the poor workpiece machining is reduced.

A laminated core includes a stack of pieces of an electrical steel sheet that have a predetermined shape resulting from processing and includes a butted portion at which portions of a processed surface of the electrical steel sheet are abutted against each other. In the electrical steel sheet, an area ratio of regions of the processed surface that have an arithmetic mean roughness Ra of 5 μm or less is 90% or greater based on a total area of the processed surface.

The application discloses a precision instrument adjustable feed amount planer device, and relates to the technical field of planer devices, which comprises a workbench, a clamping plate is slidably arranged on the inner wall of the workbench, a sliding rail is fixedly arranged on the surface of a fixing table, a sliding table is slidably arranged on the outer wall of the sliding rail, a telescopic table is slidably arranged on the inner wall of the sliding table, a force storage spring is arranged between the telescopic table and the sliding table, a planer cutter is fixedly arranged on the bottom of the telescopic table, a friction wheel is fixedly arranged on the bottom of the workbench, and an adjusting device is further arranged on the surface of the workbench, so that the planer cutter and the friction wheel are prevented from scratching the processed surface again during the resetting process, the surface of the wood plate is prevented from being scratched or secondarily damaged, the machining precision and the surface smoothness are improved, the automatic lifting of the planer cutter is realized through the inclined surface contact and the spring force storage, the manual adjustment steps are reduced, and the continuous machining efficiency is improved.