39results about How to "Realize finishing" patented technology

The invention discloses a turning device for a long and thin threaded shaft. The turning device for the long and thin threaded shaft is arranged on a large carriage of a lathe and comprises a base, a guide sleeve, a telescopic sleeve, a tool reset ring, thread length control mechanisms and tool assemblies. The turning device has the advantages that scales are arranged on the outer circle surface of the long and thin shaft close to a shaft ring so that the length value of threads to be turned can be accurately adjusted by adjusting the axial positions of adjusting screw sleeves; three sets of turning tools which are uniformly distributed in the circumferential direction are arranged so that the deformation of the threaded shaft in the turning process can be reduced, and the machining quality can be guaranteed; an inclined surface A and an inclined surface C which can make contact with each other or can be separated from each other are arranged so that finish machining of the threads can be accurately realized, and the situation of tool breakage can be effectively prevented; and the tool reset ring is arranged so that the three sets of turning tools can contract towards the center at the same time, and therefore the operation can be rapid and convenient.

The invention discloses an air-floating shaft rotating soft abrasive flow polishing device, which is used for grinding a slender rod to be processed, comprising a fixed plate, a core polishing device for a slender rod, a workpiece feeding device and a buffer device; the slender The rod core polishing device, the workpiece feeding device, and the buffer device are all fixedly installed on the fixed plate; the workpiece feeding device is used for axial feeding of the slender rod core polishing device, and the buffer device is used for buffering the slender rod core polishing device Axial feed; the slender rod core polishing device includes an internal screw type constraint module, a constraint module mounting seat, a sealing cover, a clamping end cover, an O-ring and a screw rod, and the slender rod to be processed passes through one end of the constraint module mounting seat It is connected with the servo motor through a coupling, and the other end is matched with a rolling bearing. The inside of the constraining module mounting seat forms a constrained flow channel through a sealing cover and a clamping end cover. The invention has high polishing efficiency and good polishing effect, and is extremely suitable for ultra-precision machining of the inner wall.

The invention discloses an automatic polishing-separating machine which comprises a base, a machining box and a power switch, wherein the machining box is positioned at the middle of the base; the power switch is arranged on one side of the base; a separating plate is arranged in the machining box; a plurality of vent holes are formed in the separating plate; a rotating shaft is arranged at the middle of the separating plate, and rotationally connected with the bottoms of the separating plate and the machining box; a plurality of stirring rods are circumferentially arranged at one end of the rotating shaft in the machining box; a motor is arranged at the other end of the rotating shaft; a plurality of draught fans are arranged between the bottoms of the separating plate and the machining box; a plurality of hollow steel balls are arranged on the separating plate; the ball diameter of each steel ball is greater than the hole diameter of each vent hole; a top plate is hinged with the top of the machining box; a plurality of electromagnets used for adsorbing the steel balls are arranged on the top plate, and connected with a control switch; the draught fans and the control switch are electrically connected with each other; and the motor and the power switch are electrically connected with each other. By adoption of the automatic polishing-separating machine disclosed by the invention, the problem that a conventional oil switch polishing device is complex in operation procedure can be mainly solved.

The invention discloses a method and a device thereof for electrolytic-magnetic grinding composite smoothing of hard materials. The steps of the method include: setting the DC power supply voltage of the electrolytic-magnetic composite grinding device to be 8-20V, and the electrolyte solution to be a sodium nitrate solution with a concentration of 12-20%; installing the electrodes and magnetic poles on the machine tool, turning on the DC power supply and the machine tool Fine grinding; replace the sintered magnetic abrasive for ultra-fine grinding. The device adopted in the method includes an electrolytic-magnetic grinding composite mechanism and an electrolyte supply mechanism, and the electrolytic-magnetic grinding composite mechanism includes: a workbench, a workpiece, a magnetic pole, a fixture, a machine tool, a connecting rod, magnetic abrasive particles, a passivation film, and a DC power supply and electrodes; the electrolyte supply mechanism includes: delivery pipe, peristaltic pump, filter, stirrer and electrolyte. The invention combines the electrolytic polishing process and the magnetic grinding process, exerts their respective advantages, and remarkably improves the grinding process efficiency and the surface quality of the workpiece.

The invention provides a viscoelastic magnetic grinding tool with silicone rubber as the matrix and a preparation method thereof, and belongs to the field of mechanical part precision surface polishing. The grinding tool can solve the problems that in the prior art, a grinding tool is high in use cost, complex-surface workpieces are difficult to machine, and after machining, the metal surface layer is subjected to plastic deformation, the surface hardness is increased, and residual compressive stress exists. A composite grinding material is formed by mixing a matrix, a ferromagnetic phase, a grinding grain phase and a surface modifier, is in a semi-solid shape and has viscoelasticity, plasticity, mobility and magnetism. The matrix of the viscoelastic magnetic grinding tool is made of a semi-solid compound which is composed of 107 silicone rubber, a chemical agent, nano silicon dioxide, silicon oil and naphthenic oil. The prepared novel magnetic grinding tool is high in grinding capability, good in self-sharpening performance small in temperature rise and free of residual stress in machining, and complex surfaces with inner holes, grooves and the like can be subjected to finish machining.

The invention relates to a method for modulating inner surface features of a hole with a high depth-to-diameter ratio by using a laser, belonging to the technical field of laser processing. It is characterized in that it includes the following steps: (1) cleaning the inner surface of the hole; (2) clamping so that the axis of the hole coincides with the normal incident direction of the laser; (3) deflecting the incident angle of the laser and periodically scanning along the inner surface of the hole; (4) Adjust the distance of the beam relative to the surface of the workpiece; (5) Make the beam cover the entire inner surface of the hole. The invention is based on laser remelting technology, and adopts laser to reprocess holes with high depth-to-diameter ratio. Efficiently eliminate local lines and local microcracks by laser melting a thin layer of material. Greatly reduces surface roughness and eliminates surface microcracks. It has the characteristics of high precision and high efficiency, and can realize assembly line production.

The invention provides an automatic numerical control lathe tailstock control method. A connection device for achieving automatic connection and disconnection between a lathe saddle and a tailstock of a numerical control lathe through an air cylinder is utilized. The connection device comprises a connection pillar, a rotating arm assembly, a drive assembly and a drill bit assembly, the middle of the connection pillar is provided with an annular groove, the shaft end of the connection pillar and the side face of the tailstock are provided with a pair of sensors, the rotating arm assembly comprises a rotating arm, a rotating shaft, a shaft sleeve and a big gear, the shaft sleeve is fixed to the front side face of the tailstock of the numerical control lathe, the rotating shaft penetrates through the shaft sleeve, the front end of the rotating shaft is fixedly connected with the rotating arm, the other end of the rotating shaft is fixedly connected with the big gear, the front end of the rotating arm is provided with a hook portion capable of being clamped into an annular groove, the drive assembly comprises a rack, an air cylinder, a magnetic exchange valve, a rack guide groove, a reset switch and a controller, the controller is mounted in a lathe power distribution cabinet and electrically connected with a numerical control system and the magnetic exchange valve, and the rest switch is mounted in front of the lathe saddle of the numerical control lathe and electrically connected with the controller.

The invention relates to an ultrasonic vibration honing technique, in particular to a radial ultrasonic honing device. By adoption of the radial ultrasonic honing device, the problems that an existing ultrasonic vibration honing device is complicated in overall structure, high power and high energy are difficult to obtain, the storage oil lubrication performance of a workpiece is prone to being affected, and transducer operation desynchrony is prone to being caused are solved. The radial ultrasonic honing device comprises an outer barrel, supporting rods, an upper cover, a lower cover, a floating mechanism, an ejector rod, a limiting barrel, a linear bearing, an inner barrel, a supporting barrel, a reset spring, an expand mandrel, guide bars, rare-earth super-magnetostriction transducers, inner pin rods, oilstone bases, outer pin rods, oilstone, annular springs and a collecting ring. The radial ultrasonic honing device is applicable to ultrasonic vibration honing.

A soft abrasive flow field testing method based on a level set comprises the following steps: 1) establishing an equation of motion of the level set function of the soft abrasive flow by combining a fluid Navier-Stokes equation; 2) discretizing and projecting space; 3) discretizing time; 4) iterating combination of the level set function and function of volume of fluid model; 5) reconstructing the distance function; and 6) testing the soft abrasive flow field: better analyzing the flow field characteristics to find the best machining state by adopting the principle of the level set method, namely effectively capturing topological variation of the interface. The testing method improves the computational accuracy and accurately finds the best machining state.

A magnetic liquid grinder for polishing the surface of metallic or non-metal work-piece features that when there is no action of magnetic, its magnetic liquid can flow freely and when a magnetic field is applied to it, it can become a visco-plastic substance with a certain rigidity to form a flexible grinding layer on the surface of work-piece. The surface of work-piece can be polished by the relative movement between work-piece and said flexible grinding layer.

The invention discloses a device for long and thin threaded shaft turning of a lathe. The device for long and thin threaded shaft turning of the lathe is mounted on a large carriage of the lathe and comprises a base, a guide sleeve, a telescopic sleeve, a tool reset ring, thread length control mechanisms and tool assemblies. The device has the beneficial effects that due to the arrangement of three sets of threaded tools distributed circumferentially and evenly, threaded shaft deformation in the turning process is reduced, and machining quality is guaranteed; due to arranged adjusting sleeves, the length of a thread on each to-be-turned long and thin shaft can be controlled precisely; due to the arrangement of first inclined faces and third inclined faces capable of being in contact with each other or being separated from each other, thread ending machining can be achieved precisely, and the tool collapse situation is effectively avoided; and due to the arranged tool reset ring, the three sets of threaded tools can contract towards the center at the same time, and operation is fast and convenient.