430results about "Optical surface grinding machines" patented technology

The invention relates to the technical field of optical manufacturing and processing control, in particular to an intelligent control system of lens processing equipment, which comprises a process relationship pre-storage module, a pressure distribution acquisition module, a surface shape error prediction module, a pressure compensation decision module, an actuator control module and a processing effect verification module. Wherein the process relation pre-storage module is used for establishing a pressure-removal rate relation mapping table; the pressure distribution acquisition module is used for acquiring pressure distribution data; the surface shape error prediction module is used for predicting surface shape error data generated by the lens; the pressure compensation decision module is used for generating a regionalized pressure compensation amount; and the actuator control module is used for dynamically adjusting the pressure applied to different areas of the lens by the polishing head. According to the method, by constructing the pressure-removal rate mapping and closed-loop self-calibration mechanism, intelligent pressure regulation and control and surface shape error dynamic correction in the lens polishing process are achieved, and the machining precision and stability are remarkably improved.

The utility model belongs to the technical field of optical element machining devices, and discloses an automatic centering device in optical element machining, which comprises a machining base, a rotating table rotationally mounted at the top of the machining base and an electric permanent magnetic chuck arranged at the top of the rotating table, and a rotating mechanism for driving the rotating table to rotate is arranged on the machining base. And a plurality of transverse plates slidably connected with the side wall of the machining base are arranged on the machining base in a penetrating mode, the transverse plates are evenly distributed about the axis of the rotating table, a vertical rod is fixed to the top of each transverse plate, and an adjusting mechanism used for driving the transverse plates to be close to or away from one another at the same time is arranged on the machining base. According to the optical glass polishing device, by arranging the adjusting mechanism, the multiple transverse plates drive the vertical rods fixed to the transverse plates to be close to one another at the same time, so that the optical glass placed on the rotating table can be centered, and the polishing effect of the optical glass is ensured.

The invention relates to a surface type correction and processing method of an aspherical lens, which comprises the following steps of: changing a radial point location of a polishing disk participating in cutting by adopting a rotary polishing disk and lens tangent layout and through three-axis linkage of numerical control X-axis radial feeding, numerical control B-axis swinging and Z-axis approaching movement, and forming differentiation by utilizing the linear velocity gradient of the disk to remove redundant materials of the lens; and surface shape error differential correction is realized. According to the method, the polishing head does not need to be frequently replaced, over-polishing / under-polishing of traditional air bag polishing is eliminated, and the single-piece machining time is shortened; an air bag structure is omitted, the service life of consumables is prolonged, and batch fluctuation is reduced; accumulative errors are reduced through three-axis linkage, and medium-high frequency ring belt errors are restrained. The matched processing method comprises the steps of initial forming, detection, planning, correction and the like, can be quickly adapted to lenses of multiple specifications, and efficiently completes high-precision batch manufacturing of medium and large-caliber aspheric surfaces.

The invention relates to the technical field of machine tool machining, and discloses an off-axis aspherical mirror polishing method, device and equipment and a storage medium, and the method comprises the steps: building a female aspherical geometric model, and dividing an off-axis region based on the female aspherical geometric model and a preset design requirement; performing trajectory planning based on the off-axis region to obtain a polishing path; constructing a removal function model based on the off-axis region; obtaining a surface shape residual error from the off-axis aspherical mirror to be polished, and solving and obtaining residence time based on the removal function model, the surface shape residual error and the polishing path; constructing a five-axis machine tool kinematic model; the residence time and the polishing path are substituted into the five-axis machine tool kinematic model to obtain polishing control parameters; through the process design of off-axis area positioning, path planning, modeling removal, residence solution and coordinate conversion, stable control over the machining precision of the asymmetric structure of the off-axis aspherical mirror is achieved, and the high-precision manufacturing requirement of a high-performance optical system for the off-axis aspherical mirror is stably met.

The invention relates to the technical field of optical part machining, discloses a lens grinding control method and system based on real-time curvature feedback, and aims to solve the technical problems of grinding monitoring lag, secondary clamping error and interference of grinding fluid on measurement precision. The method comprises the following steps: starting grinding and synchronously utilizing an air curtain to eliminate liquid film interference in a sampling area; acquiring height coordinates of multiple points on the surface of the lens through a sensor array; solving a real-time curvature radius by using a least square fitting algorithm; grinding pressure and rotating speed are adjusted in a closed-loop mode according to the curvature deviation. The system comprises a grinding execution module, a multi-point laser acquisition module, an environment compensation module and a central control module. According to the scheme, online real-time monitoring and anti-interference measurement in the grinding process are achieved, clamping errors are eliminated, self-adaptive closed-loop control over machining parameters is achieved, and the machining yield, the surface shape precision and the production efficiency of lenses are remarkably improved.

The utility model relates to the technical field of observation mirrors, in particular to a water flow observation mirror and forming equipment. When the water flow observation mirror needs to be machined, the water flow observation mirror is placed on a machining table of a polishing mechanism, a first driving piece is started, the first driving piece works to drive a transmission disc to rotate, and the transmission disc drives a transmission plate to rotate; the transmission plate drives the two inclined rods to rotate, when the included angle between the two inclined rods and the transmission plate is reduced, the two inclined rods drive the two protection covers on the two mounting plates to get close to each other until the two protection covers are closed, and at the moment, the polishing mechanism is started to machine the water flow observation mirror; and through the two protective covers, chippings generated when the water flow observation mirror is machined are effectively prevented from splashing to accidentally injure workers, so that the problem that the chippings are splashed to easily injure the workers when the water flow observation mirror is machined by an existing water flow observation mirror forming device is solved.

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 application provides a method for adjusting eccentricity of an optical component, and belongs to the technical field of eccentricity adjustment. The application comprises the following steps: step (1), designing a V groove and fixing the size; step (2), bonding two surfaces of the optical component, bonding the back surface to the back surface of a tool, and bonding the front surface to the edge line of a body; step (3), confirming the compactness of the optical component placed on the body by observing the back surface aperture, and sealing the edge with glue; step (4), after the corresponding V groove is fixed, the upper surface of the corresponding product is ground to remove the excess part; and step (5), the first surface is processed according to the designed size, and the other surface is processed by repeating steps 2-4, and the designed size of the first surface. By controlling the size precision of the V groove, the application realizes the principle of natural vertical placement of the product after placement, naturally forms the corresponding equal-thickness position contact, and becomes a symmetrical mode to perform the parallel position grinding of the corresponding product size, and also realizes the equal-thickness size.

The present invention relates to a method for centering an ophthalmic lens (10) comprising several distinct patterns (12) located around a pattern-free region (13), the method being performed by a processing unit and comprising the steps of: acquiring at least one image of the ophthalmic lens; processing the image to detect the patterns; and inferring the position of a centering point (AC) therefrom. According to the present invention, after the processing step, only a portion of the patterns are selected as a function of their positions relative to the pattern-free region, and during the inference step, the centering point position is inferred from only the selected pattern positions.

The utility model discloses an optical lens polishing detection device which comprises a mounting seat, the lower end of the inner side of the mounting seat is fixedly connected with a placing seat, the upper surface of the placing seat is provided with a setting groove, the inner side of the setting groove is fixedly connected with tempered glass, a reflecting lens is arranged below the setting groove, and the reflecting lens is fixedly connected with the placing seat. And the reflecting lens is fixedly connected with the lower surface of the inner side of the mounting base, the upper surface of the setting groove is fixedly connected with a clamping mechanism, and the top surface of the setting groove is provided with a clamping block. According to the above structure, the clamping mechanism, the clamping blocks and the optical microscope are matched with each other, so that the clamping mechanism drives the clamping blocks to move synchronously and oppositely, an optical lens is clamped at multiple angles, the optical lens is clamped through the clamping blocks, and the clamping efficiency of the optical lens is improved. Therefore, the problem that the optical lens is separated and damaged when the optical lens is detected by the optical microscope is greatly reduced.

The utility model discloses a lens polishing clamp, and relates to the field of optical machining. Through the unique design of the outer clamping jaw and the inner clamping jaw, the circular clamping groove and the rectangular clamping groove are adopted, cylindrical and rectangular cylindrical lenses can be stably clamped, the limitation that a traditional clamp is only suitable for clamping cylindrical lenses is overcome, the application range of the clamp is widened, the polishing requirements of lenses of different shapes in optical machining are met, and the polishing efficiency is improved. Through the ingenious design of a connecting mechanism, the inner clamping jaw can be easily disassembled by pressing a pressing rod, only a butt joint rod needs to be inserted during installation, positioning and locking are automatically completed through a limiting block and a spring, operation is easy and convenient, the replacement time of the clamp is greatly shortened, and the production efficiency is improved; and the labor intensity of operators is reduced.

The utility model discloses an optical glass processing and polishing device, which relates to the technical field of optical glass polishing, and comprises a base and a substrate, one end of the base is fixedly connected with a support frame, the inside of the support frame is fixedly connected with a sliding rod, the sliding rod is movably connected with a sliding plate, and one end of the top of the sliding plate is fixedly provided with a hydraulic telescopic rod. The top end of the hydraulic telescopic rod is fixed to the inner wall of the top of the supporting frame, a driving motor is fixed to one end of the top of the sliding plate, an output shaft of the driving motor is fixedly connected with a polishing roller through a connecting column, a control motor is fixedly connected to the center of the bottom of the base, and a discharging baffle for discharging is fixed to one end of the top of the base. By means of the clamping plate, the air bag and the extrusion ring, when the device operates for feeding, lenses fall into the containing groove of the base plate, due to the fact that the lenses are different in size, part of the lenses fall downwards due to the small size, the air bag is extruded through the extrusion ring, the air pipe is tightened inwards, and therefore the clamping plate is driven to clamp the lenses.

The application discloses a multi-axis linkage numerical control machine tool for milling and grinding of a large-aperture optical spherical mirror and belongs to the technical field of optical spherical mirror processing. The multi-axis linkage numerical control machine tool for milling and grinding of the large-aperture optical spherical mirror comprises a bed body, a first sliding groove is arranged in the middle part of the bed body, a first gear, an external gear ring and a plurality of gear transmission structures are driven by a third driving motor, four L-shaped fixing blocks in four directions are driven to synchronously approach the edge of a workpiece, and a correction operation is performed on the workpiece, then an infrared sensor is used to accurately detect a contact position and make a control box control flexible rubber at the arc-shaped end of the L-shaped fixing block to be in contact with the edge of the workpiece, stress generated by rigid clamping is avoided, meanwhile, a vacuum adsorption device is used to realize uniform adsorption of the whole plane of the workpiece, and the flexible rubber at the arc-shaped end of the L-shaped fixing block is used, so that bumping damage of the workpiece during clamping is prevented, micro-slippage and eccentricity of the workpiece during milling and grinding are effectively avoided, and clamping stability and centering precision are improved.

To disclose a system and a method for efficiently processing a plurality of samples by using a BIB system.SOLUTION: An exemplary method for efficiently processing a plurality of samples using a BIB system (102) according to the present invention comprises: removing an individual sample holder (116) containing a sample (104) from a storage location in the BIB system, where the BIB system comprises a plurality of sample holders arranged in one or more storage locations; loading the individual sample holder onto a sample stage (112) configured to hold the sample holder during polishing of a corresponding sample held by the individual sample holder; causing a BIB source to emit a broad ion beam (108) toward the sample, where the broad ion beam removes at least a portion of the sample upon which it is incident. Once a desired portion of the sample has been removed, the sample holder is removed from the sample stage and returned to the storage location.SELECTED DRAWING: Figure 1

This invention relates to the field of ultra-precision polishing technology, specifically to an ultrasonic cavitation microjet polishing module for polishing microstructures. The module includes an acoustic focusing nozzle, a center-penetrating piezoelectric transducer, an adaptive acoustic impedance frequency tracking system, and a liquid supply and bubble nucleation system. The acoustic focusing nozzle employs a variable cross-section acoustic amplitude rod structure, ensuring that the standing wave antinodes and nozzle outlet are confocal, thus increasing energy density. The piezoelectric transducer has a ring structure with fluid flowing through its center, achieving efficient energy conversion. The frequency tracking system adjusts the excitation frequency in real time to maintain resonance. The liquid supply system introduces cavitation nuclei through a venturi tube, reducing the cavitation threshold. This invention, through an acoustic-fluid coupling mechanism, utilizes the dual effects of macroscopic kinetic energy removal and microscopic cavitation removal to solve the problems of traditional polishing techniques, such as difficulty in processing high aspect ratio microstructures, incomplete bottom polishing, and low efficiency. It achieves high-precision polishing of microstructure surfaces, and is particularly suitable for ultra-precision machining of deep and narrow grooves.

The utility model discloses a high-precision optical lens grinding calibration mechanism which comprises a driving mechanism, a steering mechanism is arranged on one side of the top end of the driving mechanism, a calibration assembly is arranged at the top end of the steering mechanism, the calibration assembly comprises a rotating disc, a transverse groove and a longitudinal groove are vertically formed in the top end of the rotating disc, and the transverse groove and the longitudinal groove are arranged in the rotating disc. Two first clamping mechanisms are symmetrically, synchronously and oppositely slidably installed in the transverse groove, two second clamping mechanisms are symmetrically, synchronously and oppositely slidably installed in the longitudinal groove, graduated scales are arranged on one side of the top end of the transverse groove and one side of the top end of the longitudinal groove correspondingly, and air cylinders for driving the first clamping mechanisms and the second clamping mechanisms are installed in the transverse groove and the longitudinal groove correspondingly. The automatic positioning device has the advantages of being capable of achieving automatic positioning and high in precision, and the problem that before an existing optical lens is ground, the precision of manual positioning is low, and the grinding effect becomes poor is solved.

The invention relates to the technical field of optical precision machining, in particular to a curvature self-adaptive curved surface fitting method and system in optical element polishing, and the method comprises the steps: obtaining a material height difference removal matrix based on interference measurement data before and after polishing of an optical element; traversing the height difference matrix by using a sliding window mode, calculating a Hessian matrix eigenvalue in a local area, forming a curvature sensitivity index (CSI), dividing an optical surface area into a plane area, a gradual change area and a high curvature area, and setting curved surface fitting parameters in the areas respectively; performing curved surface fitting on the region by adopting a weighted least square method to obtain a continuous surface model, and performing adaptive numerical integration calculation on the continuous surface to obtain a material removal volume; according to the method, the process control requirement of high-precision optical manufacturing can be met, the calculation precision is high, the calculation precision and the calculation efficiency can be maximized, the global efficiency is high, the capability of capturing local features can be achieved, the method can be integrated into an existing quality control system, and process decision making is facilitated.

The present application relates to the technical fields of optical element processing, and discloses an optical element processing jig and a processing method thereof. The jig comprises a jig body, tooth grooves oppositely arranged on two long sides of the jig body for columnar optical element positioning in a column; the jig body is provided with a first reference surface, a second reference surface, a first parallel reference surface and a second parallel reference surface, the first parallel reference surface is parallel to the first reference surface, the second parallel reference surface is parallel to the second reference surface, and the first reference surface and the second reference surface form different preset angles with respect to the tooth groove axis. Through the different reference surfaces adhering to the processing platform, the columnar optical elements can be in different grinding postures under the same clamping reference, and two plane grinding processes can be completed. The scheme can reduce repeated clamping and repeated calibration, improve batch processing efficiency, processing precision and consistency.

The invention relates to the technical field of optical part ultra-precision machining, in particular to a large optical part ion beam polishing machine which comprises an overturning feeding device and a vacuum chamber, the overturning feeding device is arranged on one side of the vacuum chamber, and a side door is arranged on the side, close to the overturning feeding device, of the vacuum chamber. A driving mechanism is movably mounted in the vacuum chamber; the overturning feeding device comprises a transverse moving module. During application of the technical scheme, through reasonable layout of a driving structure and arrangement of structures such as multiple limiting, rolling feeding, automatic driving and modular layout, smooth feeding, stable overturning and no shaking of large optical parts can be guaranteed, radial acting force is greatly reduced, the operation process is simplified, the equipment layout is optimized, the positioning precision is improved, and the adaptive range is expanded; the problems of center driving material blocking, bottom driving shaking, large acting force, inconvenient operation, overlarge size, insufficient adaptation precision and the like in the prior art are comprehensively solved.

The application discloses a high-precision optical lens production grinding device, relates to the technical field of optical lens grinding, and comprises a grinding box and a connecting table arranged on one side of the grinding box. The inside of the grinding box is provided with a grinding assembly. The top of the connecting table is provided with a driving assembly. The driving assembly is used in cooperation with the grinding assembly. An adjusting assembly is connected to the driving assembly. The bottom of the grinding box is provided with a reflux filtering assembly. The reflux filtering assembly comprises a reflux box arranged at the bottom of the grinding box. The bottom of the reflux box is provided with a leakage hole. A bushing is arranged on the outer wall of one side of the reflux box. The high-precision optical lens production grinding device disclosed by the application can improve the cleanliness of the recycled grinding liquid, thereby guaranteeing the grinding effect of high-precision optical lenses.

This application relates to the field of optical component processing tools, providing an auxiliary fixture for the upper plate of an optical component and processing equipment. The auxiliary fixture includes: a fixture sleeve having an axially penetrating central shaft hole with opposing first and second ends; a part limiting part disposed at the first end of the fixture sleeve, having a first limiting hole; and a chuck limiting part disposed at the second end of the fixture sleeve, having a second limiting hole and a limiting inner bottom surface, the second limiting hole and the first limiting hole having a predetermined coaxiality. The fixture sleeve is fitted onto the bonding fixture through the central shaft hole, such that the second limiting hole fits onto the outer wall of the machine tool chuck and the limiting inner bottom surface abuts against the end face of the machine tool chuck. The optical component is inserted into the first limiting hole and thus limited on the bonding fixture. This solves the problem in the prior art of difficult and time-consuming adjustment of the offset between the central axis of the optical component and the rotational central axis of the machine tool chuck.

The utility model relates to the technical field of optical lens processing, in particular to an optical lens edging high-speed core fixing clamping mechanism which comprises an installation frame, a shaft sleeve is arranged above one side of the installation frame and fixed to the installation frame through a support, a main shaft is arranged on the shaft sleeve, the end of the main shaft penetrates through the two ends of the shaft sleeve, and the main shaft is connected with the shaft sleeve in a sliding mode. A connecting shaft is rotationally installed in the main shaft, one end of the connecting shaft is connected with a chuck, and the other end of the connecting shaft is provided with a gear driving the connecting shaft to rotate. When the high-speed core fixing clamping mechanism for optical lens edging is used, through the sliding connection of the sleeve on the connecting pipe and the elastic effect of the compression spring on the main shaft and the connecting pipe, when the clamping mechanism carries out core fixing on an optical lens, buffering is provided for high-speed rotation of the clamping mechanism; and it is guaranteed that the optical lens has sufficient space to move to achieve core fixing, and good fixing is provided for the optical lens.

The utility model discloses a lens lower hem grinding machine which comprises a grinding bin, a material pressing mechanism and a dust removal mechanism, a driving motor is arranged on the side wall of the grinding bin, a speed reducer is arranged at the output end of the driving motor, and a grinding lower hem for grinding a lens in the grinding bin is arranged at the output end of the speed reducer. An opening is formed in the side wall of the grinding lower hem, the material pressing mechanism tightly presses the lens in the grinding bin, and the dust removal mechanism comprises a flexible channel communicated with the opening in the side wall of the grinding lower hem, an air pipe communicated with the flexible channel and an exhaust fan communicated with the air pipe. The driving motor is matched with the speed reducer to drive the grinding lower hem to grind the lens, powder obtained after grinding is collected into the air sleeve through suction of the exhaust fan, normal swinging of the grinding lower hem is not affected by the arrangement of the flexible channel, and the applicability is high.

This utility model relates to the field of optical component processing, and more particularly to a quartz protective lens polishing device. This utility model provides a quartz protective lens polishing device comprising a body, a support plate, a water tank, a water pump, a vertical slide rail, a vertical slider, and a polishing motor. A support plate is fixedly mounted on the body, a water tank is fixedly mounted on the rear left side of the support plate, a water pump is fixedly mounted inside the water tank, a vertical slide rail is fixedly mounted on the rear middle of the support plate, a vertical slider is slidably mounted on the vertical slide rail, and a polishing motor is fixedly connected to the front side of the vertical slider. This utility model, after the quartz lens is polished, uses a pressure rod to lift a convex ring, causing the convex rod on the convex ring to lift the polished quartz lens, which is then directly collected by the operator. This achieves the effect of improving lens collection efficiency while avoiding scratches or damage to the lens.

The utility model discloses an optical lens thickness grinding fixing mechanism which comprises a base, a mounting base is arranged at the top of the base, an adsorption base is fixedly connected to the center of the top of the mounting base, a suction cup is fixedly connected to the center of the adsorption base, and an electric push rod is fixedly connected to the center of the interior of the adsorption base and the center of the interior of the mounting base. The telescopic end of the electric push rod is fixedly connected with a piston, and an air hole is formed in the suction cup. The outer side wall of the adsorption base is sleeved with a movable ring. According to the utility model, the adsorption seat, the movable ring and the locking bolt are mutually matched, the adsorption seat is used for providing suction force and carrying out central positioning on the lens, meanwhile, the lens can be positioned horizontally and is not inclined, and glue is injected on the peripheral side of the bottom surface of the lens, so that the lens can be fixed in an auxiliary gluing manner, and meanwhile, a supporting layer of 1mm can be formed at the bottom of the lens; therefore, the bottom of the lens is stressed in a balanced manner, and the positioning stability of the lens is improved.

The utility model relates to corneal contact lens processing technical field, especially a kind of polishing machine for corneal contact lens processing, including polishing table, still include: mounting bracket, set in the polishing table;Drive component, set in the mounting bracket, the drive component includes pusher assembly and lifting frame, the pusher assembly is used to drive the lifting frame and slides up and down along the mounting bracket, rotating assembly is provided on the lifting frame, rotating assembly includes the motor installed in the inside of lifting frame, the output shaft end of the motor is fixedly connected with the pivot, the bottom of the pivot is provided with the accommodating groove, the surface of the pivot is fixedly connected with fixed ring and slidingly connected with pull handle;The collection component is set to effectively fence and collect the debris generated in polishing process, fundamentally solve the problem that polishing debris is easy to scatter everywhere in the prior art, cause working environment pollution, significantly improve the cleanliness of working environment.

The invention discloses an optical lens manufacturing device, and relates to the technical field of lens polishing. Comprising a polishing supporting piece, a translation sliding part is installed on the polishing supporting piece, and a lens positioning piece is installed on the translation sliding part; the lens positioning piece is used for positioning the optical lens under negative pressure; a negative pressure control piece is mounted on the translation sliding part; a position detection piece is mounted on the polishing supporting piece; a wind power protection piece is mounted on the translation sliding part; the position detection piece is adopted to be matched with the transverse moving plate with the position capable of being movably adjusted, the position when the optical lens is disassembled is adjusted, the polishing head and the polishing solution filling pipe are staggered, and the situation that a worker directly disassemble the optical lens below the polishing head and the polishing solution filling pipe, and pollution is caused is avoided; the problem that an existing optical lens manufacturing device usually adopts a fixed optical lens positioning structure and is inconvenient to move to avoid a polishing solution is solved.

The invention relates to a device and a method for polishing an optical lens or an optical mirror with a polishing tool and with a workpiece holder ring for receiving the optical lens or optical mirror, wherein the workpiece holder ring is arranged in a vertical direction above the tool, wherein the device has three axes (X1, Z1, Bl) movable during the polishing process for moving the workpiece holder ring and the polishing tool. (Fig. 1).