818results 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 invention relates to a machining device for optical workpieces, to a use of a cross-table, and to a method for facing an optical workpiece, wherein the workpiece is first fed to a tool along a roller-supported feed axle and is then machined by facing only by axial movement of the tool. Furthermore, the workpiece being machined is moved along a transverse axis with hydrostatic mounting during machining. This enables a simple and cost-effective design and highly precise machining.

The invention provides a precision manufacturing method of a special-shaped lens, a convex spherical surface and a concave aspheric surface are formed on the front and back surfaces of the special-shaped lens respectively, a chord plane is formed on each of the two sides of the special-shaped lens, and the method comprises the following steps: S1, performing rough grinding forming on set fitting spherical surfaces of the convex spherical surface and the concave aspheric surface of the special-shaped lens; s2, turning a concave aspheric surface; s3, after turning is completed, whether the concave aspheric surface is qualified or not is detected, if yes, the step S4 is executed, and if not, the step S2 is repeated; s4, discharging from the disc, cleaning the special-shaped lens, and protecting the concave aspheric surface by using a protective layer; s5, starting the numerical control machining center, and machining two chord planes by taking the convex spherical surface and the concave surface platform as positioning references; s6, a machine tool is started, the protected concave aspheric surface and the special-shaped matching tool are placed into a vacuum adsorption tool together, a polishing disc is installed, and a polishing program is started; and S7, detecting the surface shape precision and the surface smoothness of the convex spherical surface. According to the method, the edge breaking phenomenon during machining is effectively avoided, and the machining difficulty is reduced.

The invention belongs to the field of optical lens machining, and particularly relates to an optical lens machining rotary table which comprises a machining table body, a machining groove is formed in the machining table body, a base is arranged at the bottom of the machining groove, two rotary table assemblies in bilateral symmetry are arranged on the base, and a first driving assembly is jointly arranged between the two rotary table assemblies and the base. And a polishing mechanism is arranged on the rotary table assembly. The rotary table assembly comprises a semicircular supporting cover, the supporting cover is connected with the base through a supporting pipe fitting, the outer arc face of the supporting cover is sleeved with a rubber sleeve matched with the supporting cover in shape, and a plurality of fixing grooves used for bearing lenses are formed in the surface of the rubber sleeve. The lens is directly fixed through the rotary table assembly, the lens is installed only by being pressed into a groove and then subjected to vacuum adsorption, demolding only needs to relieve vacuum negative pressure, the links of heating, cooling, asphalt cleaning and the like are omitted on the premise that the lens fixing stability is guaranteed, the single-cycle machining time is greatly shortened, and the material use cost is greatly reduced.

The mechanical arm grinding and polishing device for lens machining comprises a machining supporting base and a mechanical executing mechanism, and the mechanical executing mechanism is arranged on one side of the outer portion of the machining supporting base; the disc-shaped fixing piece is rotationally installed on the upper end face of the machining supporting base, and eight guide grooves evenly distributed in the annular direction are formed in the upper end face of the disc-shaped fixing piece; the limiting piece is mounted in the guide groove; the grinding mechanism is installed at the end, close to the machining supporting base, of the mechanical executing mechanism, and the grinding mechanism comprises a grinding disc and a spraying component; the anti-splashing device is arranged on the outer edge of the upper end face of the disc-shaped fixing piece; the fixing seat is installed on the upper end face of the center of the disc-shaped fixing piece, and an optical element supporting seat is installed at the end, away from the disc-shaped fixing piece, of the fixing seat. The adjustable limiting piece and the disc-shaped fixing piece are arranged to be matched with different lenses, the anti-splashing device is matched with flow guiding and the like to achieve ordered collection, and the machining efficiency and quality are improved through cooperation of the parts.

This invention belongs to the field of optical lens processing, and particularly relates to an optical lens processing turntable, including a processing table with a processing groove on the processing table. A base is set at the bottom of the processing groove, and two sets of turntable assemblies are symmetrically arranged on the base. A drive assembly is shared between the two sets of turntable assemblies and the base. A polishing mechanism is provided on the turntable assembly. The turntable assembly includes a semi-circular support cover, which is connected to the base via a support tube. A rubber sleeve adapted to the shape of the support cover is fitted on the outer arc surface of the support cover, and multiple fixing grooves for supporting lenses are formed on the surface of the rubber sleeve. This invention directly fixes lenses through the turntable assembly. Lens installation only requires pressing into the groove and then vacuum adsorption, and demolding only requires releasing the vacuum negative pressure. While ensuring the stability of lens fixation, it eliminates heating, cooling, and asphalt cleaning processes, significantly shortening the single-cycle processing time and greatly reducing material usage costs.

The invention relates to the technical field of blue glass optical filter processing, in particular to a polishing device for a blue glass optical filter and a polishing method of the polishing device. Comprising a C-shaped pedestal, an electric push rod, a T-shaped movable plate and an auxiliary connecting assembly, the auxiliary connecting assembly comprises a connecting frame, a mold plate, a partition plate, a first air cylinder, an extrusion plate, an overturning component, a grinding component, a dust collection component and a supporting component, and during use, the mold plate is placed in the connecting frame, and the first air cylinder is started to abut against the extrusion plate to move inwards; then an electric push rod is started to drive a T-shaped movable plate to move downwards, and a grinding component is driven to polish one face of the blue glass optical filter; the overturning component rotates in the round hole through the first air cylinder to drive the mold plate to overturn. The electric push rod drives the grinding component again to polish the other surface; by turning over the blue glass optical filter in the mode, the production efficiency of the blue glass optical filter can be effectively improved, and workers can conveniently collect the blue glass optical filter.

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.

A spiral magnetorheological polishing method for mid-frequency error control is provided, relating to the technical field of optical polishing. The method includes: scanning along a polishing path by using a magnetorheological polishing method, and removing a material in a spiral manner with a polishing tool to achieve spiral magnetorheological polishing of a workpiece. An angle between a scanning direction and a workpiece material removal direction is changed in real time during scanning, to alter a spatial posture of a removal function on a polishing surface in a spiral manner, thereby reducing mid-frequency errors. The method further includes: during scanning, randomly changing a processing line spacing in real time to further achieve suppression of mid-frequency ripple errors. A scanning strategy employs raster scanning processing; when the scanning strategy employs raster scanning processing, the processing line spacing is a raster scanning spacing.

The utility model discloses a stable fixing frame for polishing, which is applied to the field of fixing frames and comprises a fixing frame, and the top of the fixing frame is fixedly connected with a storage barrel. According to the feeding device, the storage barrel is used for placing the spherical lens in advance, and the pushing air cylinder, the connecting plate, the connecting rod and the pushing plate are arranged to receive the lens and directly push the lens to the position between the two clamping plates to complete feeding. Clamping cylinders, clamping plates and pushing plates are symmetrically arranged to be matched with the inner wall of the fixing frame on one side of the inner cavity of the grinding groove, so that the spherical lens can be clamped and fixed in four directions, the stability is improved, the center point of the lens is limited to correspond to the center point of the grinding head, manual adjustment is not needed, the efficiency is high, and the labor intensity is reduced. And the grinding precision is higher after the grinding head corresponds to the center point of the lens. The water pipe is connected with the water pipe, and the water pipe feeds water into the water pipe and sprays the water to the lens through the nozzle to wash dust generated by lens polishing and discharge the dust through the drain outlet.

The invention relates to the technical field of lens processing and testing, and discloses a lens processing and testing method and system, and the method comprises the steps: employing a main laser beam and an auxiliary laser beam to measure the real coordinate position of the edge of a lens; according to the real coordinate position, identifying the layer type of the currently processed material, and matching a cutting feeding speed and a cutting depth parameter; performing cutting and polishing operation on the edge of the lens according to the cutting feeding speed and the cutting depth parameter to obtain a processed edge contour; position deviation detection is conducted on the machined edge contour, a real-time deviation value is obtained, and the cutting depth and the grinding pressure are adjusted. The problem that the optical property of the transparent material interferes with the measurement precision is solved, accurate conversion from an optical signal to a real coordinate position is achieved, it is ensured that the machining process is always kept in the optimal state, and the machining precision is improved. And the problem of excessive machining or insufficient machining is effectively avoided.

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 aspherical lens machining, in particular to an edge milling device for aspherical lens machining, which comprises a clamping assembly, a first milling assembly and a second milling assembly, the milling assembly comprises a milling cutter for grinding the edge of the aspherical lens and a grinding rod for grinding the surface of the aspherical lens; the fixing assembly is used for fixing the milling cutter and the polishing rod; the protection assembly is arranged outside the clamping plates in a sleeving manner and is used for surrounding the lens between the two groups of clamping plates; the grinding device has the beneficial effects that through cooperation of the bolts and the mounting plates, the grinding rods are mounted on one sides of the clamping plates, then the lens is adsorbed to the other set of clamping plates, surface grinding of the aspheric lens is achieved, when the edge of the aspheric surface needs to be ground, the lens is clamped through the clamping assemblies, a milling cutter is driven by the connecting rods to be inserted between the two sets of clamping plates, and grinding is achieved. The edge of the aspherical lens is ground, all-directional grinding machining of the aspherical lens can be achieved without replacing equipment, and the production efficiency is improved.

The utility model discloses an optical lens grinding device convenient to clean, which belongs to the technical field of optical lenses and comprises a grinding head, the top surface of the grinding head is connected with an output shaft of a rotating motor through a coupler, the fixed end of the rotating motor is detachably connected with an L-shaped connecting plate through a bolt, and rotating blocks are welded on two side surfaces of the connecting plate. Fixed bearings are in interference fit with the side faces of the rotating blocks, movable plates with the hollow side faces are fixedly connected to the outer rings of the fixed bearings in an embedded mode, movable rods are movably connected to the inner walls of the two movable plates, the movable ends of first electric push rods are welded to the top faces of the movable rods, and movable rods with the hollow interiors are welded to the end faces of the two movable plates; a plurality of nozzles used for spraying gas for cleaning optical lens polishing scraps are installed on the side face of the movable rod, the fixed end of the first electric push rod is fixedly connected with the inner top wall of the connecting plate in an embedded mode, and the polishing machining quality of the polishing device on the optical lens is improved by cleaning the scraps on the surface of the optical lens.

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 application discloses a low-stress clamp and a clamping method, the low-stress clamp comprising a suction cup, a sliding ring mechanism mounted on the suction cup and a swing arm structure capable of driving the sliding ring mechanism to translate, the sliding ring mechanism comprising a sliding ring body and a sliding ring sleeve coaxially connected, the suction surface of the suction cup is provided with a plurality of suction parts, the cavity in the suction cup and the suction parts are communicated, the communication channel in the sliding ring body is communicated with the cavity, the annular channel between the sliding ring body and the sliding ring sleeve and the vacuum pipe communicated with the annular channel on the sliding ring sleeve, and the air in the cavity is sucked to enable the plurality of suction parts to uniformly adsorb the parts to be polished; the clamping method is as follows: the sliding ring mechanism and the suction cup are assembled, the suction parts contact the parts to be polished on the polishing disc, the external air suction part is opened to adsorb the parts to be polished, and then the swing arm structure is made to abut against the sliding ring body; the surface of the parts to be polished after clamping can be guaranteed to be flat through vacuum adsorption, the polishing quality is improved, the clamping is fast and convenient, and the machining efficiency is improved.

The invention provides an eccentric asphalt disc device and method for smoothing the intermediate frequency error of an optical element, and belongs to the technical field of optical element machining. The center of the eccentric disc is fixed at the lower end of the rotating shaft; the upper end of the connecting rod is eccentrically fixed on the eccentric disc; and the asphalt disc is movably arranged at the lower end of the connecting rod and is used for smoothing the optical element through follow-up rotation when the connecting rod eccentrically rotates. The method effectively solves the technical problem of intermediate-frequency errors caused by periodicity of a motion path in the machining process, and has the advantage of being good in intermediate-frequency error suppression effect.

The invention relates to the technical field of optical machining, in particular to a magneto-rheological polishing polyhedral common body element integrated machining method which comprises the steps that S1, a known actual grating type track is decomposed into row coordinates according to longitudinal coordinate abrupt change points; s2, splitting each line of track into a first track segment of the main body mirror, a second track segment of the auxiliary body mirror and a second track segment of the main body mirror according to the diameter of a transition point circle; s3, determining the extension length of a transition point according to the length of the removal function of the magnetorheological equipment; s4 to S5 respectively extending the main body mirror, and inserting new points from the body mirror track segments; s6, calculating the z coordinate of each fragment by using a corresponding surface equation to obtain a three-dimensional coordinate; s7, splicing to generate a single-row ordered point sequence; and S8, combining all line tracks and rotating by an angle of-theta to obtain a final track. By means of the scheme, the problems that the multi-face common-body element is long in redundant time and low in efficiency in segmented machining, the edge reserving range of the transition area of the optical element is too large, the effective aperture is reduced, and the imaging quality of an optical system is affected due to the fact that joints of the transition area are not precisely machined are solved.

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 gantry type cylindrical surface grinding miller, and relates to the technical field of cylindrical mirror grinding, the gantry type cylindrical surface grinding miller comprises a rack, a bearing table is fixedly mounted in the rack, a first moving seat is mounted at the top of the rack, and transverse driving parts are mounted at the two ends of the first moving seat; a longitudinal driving part is installed on one side of the first moving seat, a second moving seat is installed on the other side of the first moving seat, a lifting driving part is installed in the second moving seat, a grinding tool replacing frame is arranged at the front end of the rack, and a transmission assembly is installed at the top of the grinding tool replacing frame. Accurate positioning of movement of the grinding tool on the connector and accurate control over the grinding speed can be achieved, the grinding requirement of cylindrical mirrors of any size can be met, the matching relation between the rotating speed of the main shaft and the moving speed of the grinding tool can be automatically adjusted, it is guaranteed that the optimal grinding condition is kept all the time in the grinding process, and the phenomenon of uneven grinding is avoided.

A polycrystalline diamond inner and outer surface processing method belongs to the technical field of optical element manufacturing, and comprises the following steps: processing a silicon-based substrate with the outer surface having a predetermined spherical curvature, the outer surface precision and surface roughness meeting the requirements of the inner surface of the processed polycrystalline diamond; growing a polycrystalline diamond layer on the outer surface of the silicon-based substrate to form a composite structure body, and enabling the inner surface of the polycrystalline diamond layer to directly copy the spherical morphology of the outer surface of the silicon-based substrate; multi-stage step-by-step machining is conducted, rough grinding, laser and accurate grinding combined machining or laser and accurate grinding combined machining is conducted on the outer surface of the polycrystalline diamond layer, and therefore the quality of the outer surface is improved; removing the silicon-based substrate to obtain a complete polycrystalline diamond; and cleaning the inner and outer surfaces of the polycrystalline diamond, and detecting the roughness, surface shape precision and wall thickness uniformity of the inner and outer surfaces to meet the process requirements, thereby finishing the machining of the inner and outer surfaces of the polycrystalline diamond. According to the device, efficient removal, low damage and high-precision inner and outer surface forming are achieved.

The invention belongs to the technical field of reflectors, and particularly discloses a reflector preparation method based on micro-channel heat dissipation, and the method comprises the steps: obtaining a first mirror body and a second mirror body, and plating a reflecting film on one side of the first mirror body and one side of the second mirror body; the method comprises the following steps: performing micro-fluidic groove parameterization design according to three-dimensional data of a lens body, establishing an optimization model which only takes geometric parameters as independent variables, outputting performance evaluation indexes through coupling heat transfer-fluid-structure simulation, and performing iterative updating on the geometric parameters based on an evaluation result; processing parameters are generated, a micro-flow groove is formed through picosecond laser etching, and the groove wall is polished through femtosecond laser; deionized water washing, cerium oxide grinding, sodium bicarbonate cleaning and secondary washing are sequentially carried out; and bonding the two mirror bodies into a mirror surface. According to the method, under the condition that processing, tolerance and operation boundary constraints are met, comprehensive optimization of low temperature rise, low surface shape change and low pressure drop of the mirror surface is achieved, and the optical stability and reliability under high-power application are improved.

The invention discloses a controllable multi-grinding-head automatic magneto-rheological polishing device, and particularly relates to the technical field of optical manufacturing, the controllable multi-grinding-head automatic magneto-rheological polishing device comprises a machine shell, a lifting mechanism is arranged on the rear side of the inner wall of the machine shell, a control shell is arranged on the front side of the lifting mechanism, and a polishing structure is arranged on the rear side of the inner wall of the control shell; a workbench is arranged at the bottom of the inner wall of the machine shell, a fixing structure is arranged at the top of the workbench, by arranging the polishing structure, different grinding heads can be rapidly switched to meet the machining requirements of various workpieces, so that the polishing efficiency is greatly improved, in addition, convenient disassembly and assembly of the grinding heads can be achieved, the maintenance time is remarkably shortened, and the production efficiency is improved. And by arranging a fixing structure, workpieces of various specifications can be stably clamped, it is ensured that the workpieces cannot move in the polishing process, and therefore the machining precision and the surface quality are improved, and the overall operation efficiency is improved.

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 invention relates to the field of optical lens manufacturing, in particular to an optical lens loading and fixing device. According to the optical lens loading and fixing device, low-stress and high-precision fixing, rapid assembly and disassembly, zero pollution and low damage are achieved in a vacuum adsorption and sealing lacquer gluing composite mode in cooperation with the hollow column array of the heat-resistant elastic layer and the positioning structure of the inverted trapezoidal strip-shaped protrusions and the grooves, the device can be self-adaptive to adsorption and release of lenses with different curvatures, and the stability of the lens loading and fixing device is improved. The structure is compact, the reliability is high, the core pain points of stress deformation, low efficiency, easy pollution and the like in the prior art are effectively solved, and an efficient and reliable solution is provided for high-precision optical processing.

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 utility model discloses a combined type multi-lens grinding clamp which comprises a clamp shell, three symmetrically-distributed combined grooves are formed in the upper end of the outer side of the clamp shell, combined bases are installed in the combined grooves, a piston is connected in an inner cavity of the clamp shell in a sliding mode, and the combined type multi-lens grinding clamp further comprises a replacement mechanism. The replacing mechanism comprises arc-shaped sliding grooves, receding grooves and mounting clamping seats, the arc-shaped sliding grooves and the receding grooves are formed in the combined grooves correspondingly, the arc-shaped sliding grooves communicate with the adjacent receding grooves, and the mounting clamping seats are arranged on the outer sides of the combined seats correspondingly. The grinding fixture can be rapidly replaced according to the size of a grinding lens in a corresponding model, the grinding fixture is replaced, the grinding and fixing application range of the device to a camera or a video camera lens is widened, meanwhile, grinding, fixing and discharging of the lens are achieved through the air pressure difference, external tools are not needed, and operation is convenient.