53results about How to "Realize precise machining" patented technology

The side edge spiral curved surface of a superfine spiral end milling cutter is of a complex structure and is difficult to machine. A traditional grinding method cannot ensure machining accuracy of a part of a long and thin structure. The invention relates to a non-instantaneous-pole envelope grinding method of the spiral curved surface of the superfine milling cutter. When a cutter is ground, the shape and installation angle of a grinding wheel directly affect the shapes of the front corner, the rear corner and a chip groove of the side edge of the superfine milling cutter. The non-instantaneous-pole envelope principle and the homogeneous coordinate transform method are applied, a mathematical model is obtained by sectioning the spiral curved surface end generated by the standard conical grinding wheel in an envelope mode, and the method can be used for analyzing the influence on the geometric angle and the groove shape of the side edge of the superfine milling cutter from the installation angle and shape of the grinding wheel; in the model, the tilt angle of the grinding wheel is larger than the coangle of the spiral angle, the contact area decreases, and grinding force is reduced; the front cutter face, the rear cutter face and the chip groove are ground multiple times in an envelope generating mode, and the accuracy of geometrical parameters of the superfine milling cutter can be ensured. The non-instantaneous-pole envelope grinding method is suitable for accurate machining of superfine spiral structures with the high length-diameter ratio.

The invention discloses a micronano-sized micro hole machining tool. The micronano-sized micro hole machining tool comprises a machining tool base, a cutting device, a multi-degree-of-freedom workbench system, a micronano microscope video system and a control system. The multi-degree-of-freedom workbench system is arranged on the machining tool base and comprises a workbench and a workbench driving device. The cutting device is arranged above the workbench. The micronano microscope video system is arranged on the machining tool base and located at one side of the multi-degree-of-freedom workbench system. The micronano microscope video system is used for performing image collection analysis on the machining process of workpieces on the workbench and transmitting collection analysis data to the control system. According to the micronano-sized micro hole machining tool, the micronano microscope video system is used for performing image collection analysis on the machining process of the workpieces on the workbench and transmitting the collection analysis data to the control system in time, the control system gives out control instructions to the cutting device and the multi-degree-of-freedom workbench system according to the collected workpiece machining information, and hence machining precision and finished product quality are improved.

The invention belongs to the machine manufacturing and machining technology, and particularly discloses a low-deformation machining method of a large aluminum alloy thin-wall mesh barrel section. Themethod comprises the steps of barrel section cleaning, clamping alignment, deformation laser measurement, rough-milling mesh sinking and finish-milling mesh sinking. The low-deformation machining method of the large aluminum alloy thin-wall mesh barrel section is achieved, deformation in the machining process is reduced, and the product quality is improved. A machining path of achieving machiningfrom the middle of the barrel section to the upper end and the lower end is adopted, on one hand, part machining stress can be reduced, on the other hand, part internal stress can be redistributed more averagely, and machining deformation can be effectively reduced. Compensation methods are adopted for achieving precise machining of the large aluminum alloy thin-wall mesh barrel section, part theoretical appearance deviation is eliminated through the laser compensation method, and part mesh thickness precise machining is achieved through the ultrasonic thickness compensation method.

The invention discloses a tool-changing machining method based on CCD camera in-situ measurement. The method comprises the steps that the width of a circular ring is obtained through CCD camera measurement; and the reference position of a machined plane of a workpiece is modified according to the width of the circular ring; subsequent machining is conducted with the reference position as the reference; and after a tool is worn to a certain degree, a sequential process including primary feeding, calculation and secondary feeding is implemented for a newly-mounted tool. By means of the method, precise machining of a microstructural array with the machining depth being D is achieved.

The invention belongs to the technical field of automatic edge oiling machines, and particular relates to a clamping mechanism applicable to oil edge materials. The clamping mechanism comprises a rack, a rotating disc and a string clamp rope, clamps are arranged on the string clamp rope at intervals, the rack comprises a rotating disc support frame, a clamp guide plate, a clamp detection device and a clamp opening device, a rotating disc shaft is arranged on the rotating disc support frame, the rotating disc is connected to the rotating disc support frame through the rotating disc shaft, an annular groove is formed in the periphery of the rotating disc, the string clamp rope is arranged in the annular groove in a sleeved mode, and a power source which drives the string clamp rope to rotate around the rotating disc is connected to the string clamp rope; each clamp comprises a clamp body and a button, the width of the bottom end of each clamp body is smaller than that of the annular groove, and the width of the annular groove is smaller than that of each button. The clamping mechanism applicable to the oil edge materials is simple in structure, convenient and safe to operate and high in work efficiency and can position the clamps accurately and achieve precise processing of small materials.

The invention provides an automatic control system applicable to a pipeline prefabricating production line. The automatic control system mainly comprises a PLC (Programmable Logic Controller) controller and a display touch screen which are connected in an MPI (Message Passing Interface) communication mode; the digital input of the PLC controllers includes a key-pressing signal input interface, a limiting signal input interface and a material detecting signal input interface; the analog input of the PLC controllers includes a sensor signal input interface; the digital output of the PLC controllers includes servo motor control, variable frequency motor starting/stopping control, solenoid valve control and acousto-optic alarm; and the analog output of the PLC controllers includes given transducer speed. With the adoption of the automatic control system provided by the invention, a pipeline can be precisely processed, the time for work in the pipeline blanking stage can be reduced, the labor and the material are saved, the labor intensity of workers is reduced, the working efficiency is improved, the automatic production level is improved, rich content is provided for man-machine communication, once the production line has a fult, a matured and reliable pre-processing scheme is provided so that the influence caused by the fault can be reduced to the minimum.

The invention discloses drilling equipment capable of automatically adjusting the drilling angle. A drill bit is installed on an angle adjusting motor which can be rotated in a multi-angle mode. The required drilling angle is determined by a numerical control unit according to the angle of the surface of a material to be machined, the numerical control unit controls the angle adjusting motor to adjust the drill bit to the corresponding angle and controls the drill bit to drill, and then objects with the irregular surfaces can be accurately machined.

The invention discloses an oblique lathe bed double-spindle and double-row-tool numerical control lathe capable of achieving automatic feeding and discharging inside. A lathe bed is provided with a left spindle box and a right spindle box which are oppositely arranged. Spindle units are arranged in the spindle boxes. Material clamping devices are arranged at the front ends of the spindle units. The spindles are connected with spindle power main servo motors through belts. A left saddle and a right saddle are arranged on the lathe bed in the Z direction in parallel and can move left and right in the Z direction. Sliding plates are arranged on the left saddle and the right saddle and move in the X direction in the corresponding saddles. The left spindle box and the right spindle box are symmetrically arranged with the center of the lathe bed as the symmetric face, the saddles are symmetrically arranged with the center of the lathe bed as the symmetric face, the sliding plates are symmetrically arranged with the center of the lathe bed as the symmetric face, and row tool plates are symmetrically arranged with the center of the lathe bed as the symmetric face. An automatic lathe interior feeding and discharging mechanism is arranged on the lathe bed and the spindle boxes, a scrap discharging box is arranged at the bottom of the lathe bed, outer protection parts are arranged on the lathe bed, and spindle control system double CRT boxes are fixed to the outer protection part. Accurate machining in all procedures including bearing ring inner circles, outer circles, end faces, chamfers, grooves, dustproof grooves and the like is finished on one machine tool, original machining procedures of several machine tools are combined to be conducted on one machine tool, the occupied area is reduced, and the production efficiency is improved.

A numerical control machine tool for machining a bearing retainer comprises a body, a control system, a hydraulic circuit and a cooling system. Each axis is equipped with a motor and a B-axis horizontal rotating table on the left of the body is fixed with the body. The machine tool is characterized in that a locating hole is arranged in the circle center on the upper part of the B-axis horizontal rotating table; an axis hole corresponding to a locating axis is arranged at the bottom of a C-axis vertical rotating table; the locating axis is arranged in locating axis holes of the B-axis horizontal rotating table and the C-axis vertical rotating table and is fixed on a B-axis work table together with a C-axis work table by a bolt and a locating pin respectively; a fixture is installed on a C-axis vertical turntable of the numerical control machine tool; a saddle is arranged on the right of the Z-direction body; a sliding plate is arranged on the saddle and moves along an X axial screw in the saddle; and a cutter spindle housing is fixed on the sliding plate in the Z direction and can move on the sliding plate and the saddle in the X and Z directions. The numerical control machine tool can realize one-time assembling and fixing, thus satisfying precise machining of the part end face holes and the circumference holes of the bearing retainer.

The invention discloses an ultrasonic process technology of a tissue engineering scaffold material with controllable permeability. On the basis of requirements of the tissue engineering scaffold material, and aiming at the problem of toxicity of residual solvent in a chemical foaming manufacturing technology, the ultrasonic process technology comprises the following steps of: performing physical foaming on a biodegradable material by using a CO2 solid-state foaming technology so as to obtain closed-cell scaffold materials with different pore-size distributions and mechanical strengths; aiming at the problems such as poor permeability and the like of the closed-cell scaffold materials, breaking foam hole walls of the tissue engineering scaffold material through ultrasonic cavitation and micro-jet energy of pulse power ultrasounds so as to enhance connectivity of foam holes; meanwhile, adjusting the permeability of the scaffold material by adjusting the duty ratio of impulse ultrasounds during processing so as to control the degradation rate; and measuring attenuation coefficients of the scaffold material by using ultrasonic insertion in stead of a measuring technology, estimating the permeability of the material by measuring the attenuation coefficients, and guiding the selection and the control of the pulse duty factor and the ultrasonic power in the process technology.

The invention discloses a method for processing a Fery prism. The method comprises the steps of: (1) processing an initial structure cylinder of a curved prism Fery prism, wherein the diameter is equal to the diameter of a first curved surface of the Fery prism, the two end faces are planes vertical to the axis line of the cylinder, and the length of the cylinder is equal to the maximum length size of a workpiece in the axial direction of an optical axis of the first curved surface of the Fery prism plus a cutting removal amount; (2) processing an oval plane on the cylinder by cutting to obtain a wedge cylinder structure of the Fery prism, wherein the wedge cylinder structure spatially contains the Fery prism to be processed; (3) processing the first curved surface on the circular end face of the cylinder; and (4) processing a second curved surface on the oval plane. The method provided by the invention has the advantages of simple process, low cost and easiness in control of optical axis included angle precision, and is suitable for single part processing or small batch processing.

The invention provides a laser power regulation device, a laser cutting device and a laser cutting machine. The laser power regulation device comprises a support, a laser device, a half-wave plate anda polarization beam splitting prism. The laser device is used for emitting cutting laser. The half-wave plate is rotatably arranged on the support. The light incident position of the half-wave platecorresponds to a laser head of the laser device. The light incident position of the polarization beam splitting prism is opposite to the light emergent position of the half-wave plate. The cutting laser emitted by the laser device passes through the half-wave plate and then passes through the polarization beam splitting prism. The polarization beam splitting prism is used for perpendicularly splitting P-direction polarized laser and S-direction polarized laser in the cutting laser. Through the laser power regulation device, the technical problem of how to stably and accurately regulate the output power of laser without affecting the output characteristics of the laser is solved.

The invention discloses a processing method of a fine micro-nano glass structure, which comprises the following steps: preparing a glass substrate, and cleaning and blow-drying the glass substrate; when the mask material is a non-photoresist material, depositing the mask film on the glass substrate, and then coating the photoresist; when the mask material is a photoresist material, coating photoresist on the glass substrate; transferring a structure to be processed onto the photoresist on the surface of the substrate in a photoetching manner; when the mask material is a non-photoresist material, the mask material being etched firstly, and then the glass substrate being etched; when the mask material is a photoresist material, only the glass substrate being etched; and removing the photoresist and the mask material by using a dry etching or wet etching method to form a final glass device structure. By adopting the preparation process disclosed by the invention, the glass etching rate can reach 710nm/min, the roughness is reduced to be below 40nm, and the side wall perpendicularity is close to 90 degrees.

The invention discloses a variable-depth chamfering machining method for the side edge of a magnetic pole of a spiral fan. The variable-depth chamfering machining method comprises the following stepsthat firstly, a shape body of a variable-depth chamfer of the side edge of the magnetic pole of the spiral fan is worked out to serve as a cutting body; difference set operation of Boolean operation is performed on the cutting body and the shape body, to be subjected to variable-depth chamfering, of the magnetic pole of the spiral fan, so that cutting of the cutting body on the side edge of the magnetic pole of the spiral fan is completed, and a spiral fan magnetic pole three-dimensional model after chamfering processing is generated after cutting; and spiral fan magnetic pole three-dimensional model after chamfering processing is imported into machine tool machining software so as to complete a machining program. According to the variable-depth chamfering machining method, by establishingthe variable-depth chamfering cutting body and establishing a bilinear angular bisector model, the variable-depth chamfering machining problem of the side edge of the magnetic pole of the spiral fanin a cyclotron is solved, a high-precision variable-depth chamfering cutting model is achieved through the Boolean operation function of the mechanical software, the consistency of chamfering machining of multiple magnets is improved, the asymmetry of a magnetic field is reduced, and the overall performance of an accelerator is improved.

The invention discloses a machine tool capable of machining large-sized workpieces and a use method of the machine tool. The machine tool comprises a base and a control box. A motor is mounted on oneside of the base, and a first belt wheel is mounted on a rotor of the motor. The first belt wheel is in transmission connection with a second belt wheel at one end of a transmission shaft through a triangular belt, and a tightening disc is mounted at the other end of the transmission shaft. A stepping motor is mounted at the other end of the base, and a workpiece supporting device is mounted between the stepping motor and the tightening disc. A cutting and feeding device is mounted on the front side of the base. According to the machine tool capable of machining the large-sized workpieces andthe use method of the machine tool, the machine tool can complete some workpieces with special requirements, especially some workpieces incapable of being completely on common machine tools, the difficulty that the huge workpieces cannot be machined can be overcome by the machine tool, and the difficulty in special equipment requirements is solved.