A multi-tool time-sharing and partitioning optical lens polishing method based on a rotating workpiece table

Abstract

The present application relates to the technical field of optical processing, and specifically provides a kind of multi-tool time-sharing subarea optical lens polishing method based on rotating workpiece table, first, the surface error of lens to be processed is obtained, and it is divided into multiple sub-processing areas, according to the frequency band of surface error, select multiple suitable processing tools, and determine the removal function of each processing tool and the corresponding processing track, then the residence time of each processing tool in each sub-processing area is calculated by material convolution removal model, the processing rotation sequence of each processing tool is planned, and the residence time of several processing tools is almost equal in the same processing period is constrained;The lens to be processed is placed on the rotating workpiece table, and time-sharing subarea rotation processing is carried out by controlling the rotation of rotating workpiece table.The present application not only improves the processing efficiency, but also can realize the accurate adaptation of processing tool and frequency band error, and improve the surface processing precision.

Description

Technical Field

[0001] This invention belongs to the field of optical processing technology, and particularly relates to a multi-tool time-division and zone-division optical lens polishing method based on a rotating workpiece stage. Background Technology

[0002] Large-aperture optical elements have wide applications in aerospace and astronomical observation. With the gradual development of science and technology, higher requirements are being placed on optical systems, especially aspherical optical elements, in terms of aperture, processing precision, processing efficiency, lightweighting, and production cost. Optical principles show that the angular resolution of an imaging system is inversely proportional to the effective aperture, while the light-gathering ability is directly proportional to the square of the aperture. Therefore, increasing the mirror aperture has become a key way to improve the performance of optical systems.

[0003] Current optical lens polishing methods are primarily based on Computer-Controlled Optical Surface Forming (CCOS) technology. This technology, based on the Preston equation, achieves quantitative material removal by controlling the dwell time of the processing tool on the lens surface. With technological advancements, the apertures of operational astronomical telescopes continue to increase; the emergence of splicing lens technology has also led to a continuous increase in the demand for the number of lenses. Due to limitations in material removal characteristics and processing techniques, the processing cycle for large-aperture mirrors often takes several months or even more than a year.

[0004] To address this issue, a multi-tool parallel processing method has been proposed, providing an efficient and flexible technical path for improving the processing efficiency of large-aperture mirrors. Existing technologies primarily employ multi-robot collaborative optical processing to enhance efficiency; however, the robots carry identical tools, and the processing time per cycle is reduced through dwell time allocation. The use of identical tools can easily introduce residual errors during complex surface error correction, especially when low-frequency and high-frequency errors coexist. The tool's error correction capability is limited, affecting key indicators such as the final surface shape's RMS value and PV value. Summary of the Invention

[0005] In view of this, the present invention aims to provide a multi-tool time-sharing and zoned optical lens polishing method based on a rotating workpiece stage. By performing zoned processing of the lens, time-sharing rotation, and matching multiple tools according to the frequency band error distribution of the lens, efficient convergence of errors across the entire frequency band is achieved. Different processing tools process in different areas at the same time, and the processing area is switched by the turntable. This not only effectively suppresses interference between tools, but also significantly improves processing efficiency.

[0006] To achieve the above objectives, the technical solution created by this invention is implemented as follows: This invention provides a multi-tool time-division and zone-division optical lens polishing method based on a rotating workpiece stage, comprising: S1: Obtain the surface shape error of the lens to be processed, and divide the lens to be processed into multiple sub-processing areas; S2: Select multiple machining tools and determine the removal function for each machining tool; S3: Set the machining trajectory for each machining tool within each sub-machining area; S4: Based on the removal function and processing trajectory of each processing tool, as well as the surface shape error of the lens to be processed, the dwell time of each processing tool in each sub-processing area is calculated by the material convolution removal model; S5: Set the processing sequence for each processing tool for each sub-processing area, and determine the sub-processing area processed by each processing tool within each processing time period; S6: Place the lens to be processed on the rotating workpiece stage. During each processing period, each processing tool processes the sub-processing area corresponding to the current processing period according to the calculated dwell time. In the next processing period, the rotating workpiece stage drives the lens to be processed to rotate by a preset angle, and each processing tool processes the sub-processing area corresponding to its respective processing period according to the calculated dwell time.

[0007] Preferably, in S2, the type and size of each processing tool are determined based on the processing stage of the lens to be processed, the target surface accuracy, and the frequency band error distribution of the lens to be processed.

[0008] Preferably, the removal function of each processing tool is obtained by establishing a removal function model or by conducting actual processing tests.

[0009] Preferably, the machining trajectory of the same machining tool transitions continuously in different sub-machining areas.

[0010] Preferably, the material convolution removal model is: ; in, Indicates the amount removed, " represents a two-dimensional convolution operation. , , , These represent the removal functions for each machining tool. , , , Each represents the processing tool on the lens to be processed. The dwell time at the location, where n represents the number of processing tools.

[0011] Preferably, step S5 further includes: calculating the dwell time of each processing tool in each sub-processing area based on the dwell time distribution of each processing tool on the entire lens to be processed and the processing trajectory corresponding to each processing tool in each sub-processing area. , where j represents the j-th tool and k represents the k-th region.

[0012] Preferably, in S5, the method further includes: adjusting the removal function of each processing tool so that the maximum difference in the dwell time of all processing tools in the corresponding sub-processing area within the same processing time period is less than a preset value.

[0013] Preferably, the removal function of the processing tool is adjusted by changing the rotational speed of the processing tool and / or the pressure exerted by the processing tool on the lens to be processed.

[0014] Preferably, when each processing tool completes processing in the sub-processing area corresponding to the current processing time period, the processing tool is controlled to separate from the lens to be processed, and then the lens to be processed is rotated by a preset angle through the rotating workpiece table to carry out processing in the next processing time period.

[0015] Compared with the prior art, the present invention can achieve the following beneficial effects: This invention proposes a zoned processing rotation strategy, which allows multiple tools to work simultaneously in different areas. Tools of different sizes or types can specifically correct different frequency band errors on the mirror surface. Compared to single-tool processing, this invention's processing method achieves precise adaptation between the processing tool and the frequency band error. For example, large-size processing tools efficiently remove low-frequency errors, while small-size processing tools refine high-frequency errors, significantly improving surface processing accuracy. Furthermore, the rotation of multiple tools in different areas eliminates the risk of interference between processing tools. Combined with dwell time redistribution, it avoids the problem of some processing tools stopping processing for too long or waiting for the remaining tools, greatly shortening the total processing time and meeting the processing requirements of ultra-large diameters. Attached Figure Description

[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a flowchart of a multi-tool time-division and zone-division optical lens polishing method based on a rotating workpiece stage according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the machining trajectory of a dual-tool time-division and zone-division machining according to an embodiment of the present invention; Figure 3This is a schematic diagram of the initial surface shape of an optical lens with a diameter of 600mm according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the simulation processing results provided by Tool1 according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the simulation processing results provided by Tool2 according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the simulation result after using a combination of two tools, Tool1 and Tool2, according to an embodiment of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and do not constitute a limitation thereof. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the invention. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the invention are not shown or described in the specification. This is to avoid obscuring the core parts of the invention with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; the relevant operations can be fully understood based on the description in the specification and general technical knowledge in the art.

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined to form various implementations. Furthermore, the order of the steps or actions in the method description can be changed or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various orders in the specification and drawings are merely for the clear description of a particular embodiment and do not imply a mandatory order, unless otherwise stated that a particular order must be followed.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Please see Figure 1 In one embodiment of the present invention, a multi-tool time-division and zone-division optical lens polishing method based on a rotating workpiece stage is provided, comprising: S1: Obtain the surface shape error of the lens to be processed, and divide the lens to be processed into multiple sub-processing areas; S2: Select multiple machining tools and determine the removal function for each machining tool; S3: Set the machining trajectory for each machining tool within each sub-machining area; S4: Based on the removal function and processing trajectory of each processing tool, as well as the surface shape error of the lens to be processed, the dwell time of each processing tool in each sub-processing area is calculated by the material convolution removal model; S5: Set the processing sequence for each processing tool for each sub-processing area, and determine the sub-processing area processed by each processing tool within each processing time period; S6: Place the lens to be processed on the rotating workpiece stage. During each processing period, each processing tool processes the sub-processing area corresponding to the current processing period according to the calculated dwell time. In the next processing period, the rotating workpiece stage drives the lens to be processed to rotate by a preset angle, and each processing tool processes the sub-processing area corresponding to its respective processing period according to the calculated dwell time.

[0023] In step S1, the surface shape error Z(x,y) of the lens to be processed is first measured. Specifically, the initial surface shape of the lens before processing is obtained using a coordinate measuring machine, interferometer, etc. This initial surface shape includes a series of discrete data points on the lens surface, representing the surface shape of the lens to be processed. Furthermore, the target surface shape to be achieved after processing is set, and the target surface shape is also represented by discrete data points. The difference between the initial surface shape and the target surface shape is obtained by subtracting the initial surface shape from the target surface shape. The differences between all data points constitute the surface shape error of the lens to be processed, which is the final amount of material removed in subsequent processing.

[0024] The processing surface of the lens to be processed is further divided into multiple sub-processing areas. Assuming there are m sub-processing areas, these m sub-processing areas can be represented as Q1, Q2, ..., Qm. The number and size of the sub-processing areas can be comprehensively evaluated based on various factors such as the size of the lens to be processed, the size of the processing tools used, and safety distances, to ensure that no interference occurs when any two selected processing tools process in parallel in different sub-processing areas.

[0025] In step S2, multiple suitable processing tools are selected based on the surface shape error of the lens to be processed and the required grinding stages. The specific type and size of the processing tools depend on the processing stages required for the lens, the final target surface shape accuracy to be achieved, and the frequency band error distribution of the lens before processing. To achieve precise matching between the processing tools and the frequency band errors, the surface shape error of the lens to be processed can be separated into N frequency bands, with at least one corresponding processing tool selected for each frequency band, so that both low-frequency and high-frequency errors can be effectively removed. Generally, commonly used processing tools include small grinding discs, airbag polishing heads, stress plate polishing heads, wheel polishing heads, etc. The selected combination of processing tools can be a combination of different types and models, or a combination of the same type but different models.

[0026] After selecting all processing tools, it is necessary to further determine the removal function of each processing tool under preset conditions. The removal function of the processing tool can be obtained by establishing a removal function model, or by processing an experimental piece with the same material as the lens to be processed using each processing tool, and obtaining the removal function of each processing tool through processing test calculation.

[0027] In step S3, the processing trajectory of each processing tool is planned in each sub-processing area of ​​the lens to be processed. The processing trajectory of the same processing tool in each sub-processing area is continuous, while the processing trajectories of different processing tools in each sub-processing area may partially overlap or not overlap at all. The processing trajectory is usually in the form of circular trajectory, spiral trajectory, or combination of different trajectories.

[0028] In step S4, after the removal function, machining trajectory, and corresponding sub-machining area and surface error of each machining tool are determined, the dwell time of each machining tool at each dwell point in each sub-machining area and machining trajectory is calculated using the following material convolution removal model: ; in, Indicates the amount removed, " represents a two-dimensional convolution operation. , , , These represent the removal functions for each machining tool. , , , Each processing tool represents the entire lens being processed. The dwell time at the location, where n represents the number of processing tools.

[0029] In the process of solving the dwell time, it is also necessary to limit the total dwell time of each processing tool in the corresponding sub-processing area within the same processing period so that the difference is not too large, and match the processing time of each processing tool in the corresponding sub-processing area to avoid the problem of some processing tools waiting for other processing tools for a long time.

[0030] In step S5, the processing sequence of each processing tool for each sub-processing area is planned and designed, and the sub-processing area processed by each processing tool in each processing time period is determined. For example, the processing sequence of the first processing tool Tool1 is: Q1, Q2, ..., Qm; the processing sequence of the second processing tool Tool2 is: Q2, Q3, ..., Qm, Q1; ...; the processing sequence of the nth processing tool Tool1 is: Qn, Qn+1, ..., Qm, Q1, Q2, ..., Qn-1.

[0031] Furthermore, based on the residence time distribution of each processing tool on the entire lens to be processed and the processing trajectory corresponding to each processing tool in each sub-processing area, the residence time of each processing tool in each sub-processing area is calculated and extracted separately. , where j represents the j-th tool and k represents the k-th region.

[0032] As an optional embodiment, regarding the dwell time calculated in step S4, in order to balance the processing time of each machining tool within the same processing period and avoid the efficiency bottleneck caused by the excessive processing time of a certain machining tool, constraints can be directly applied during the dwell time calculation process to ensure that the sum of the dwell times of different machining tools in each sub-region within the same processing period is approximately equal. Alternatively, the calculated dwell time can be scaled by adjusting the removal function of each machining tool to change the dwell time of each machining tool in the corresponding sub-processing region, so that the maximum difference in the dwell time of all machining tools in the corresponding sub-processing region within the same processing period is less than a preset value. Specific methods for adjusting the removal function include, but are not limited to, changing process parameters such as the tool's rotation speed and pressure.

[0033] Specifically, based on the Preston material removal model, the theoretical foundation of modern CNC optical surface forming technology, it can be seen that the material removal rate is linearly positively correlated with the polishing interface pressure and the relative motion speed, that is: ; in, This represents the amount of material removed per unit time by the machining tool at (x,y), where k is the comprehensive process coefficient (including abrasive characteristics, environmental parameters, etc.). For the contact surface pressure, It is the relative speed of motion between the processing tool and the lens to be processed.

[0034] In optical processing, the removal function of the processing tool is the distribution function of the average removal amount within the interaction area between the lens to be processed and the grinding head of the processing tool per unit working time, denoted by R(x,y). Then: .

[0035] As shown in the above formula, the removal function can be changed by adjusting the pressure and relative velocity, thereby scaling the dwell time of the processing tool in the corresponding sub-processing area proportionally while ensuring that the removal amount remains constant. This ensures that the total processing time of each sub-processing tool tends to be consistent within the same processing period.

[0036] In step S6, the lens to be processed is placed on the rotating workpiece stage. The rotating workpiece stage rotates in stages. When the robot drives the processing tool to process the lens, the rotating workpiece stage does not rotate. The rotating workpiece stage only drives the lens to rotate during non-processing time, such as when the position of the lens to be processed is checked before processing, or when the processing area is switched during processing.

[0037] Based on the processing trajectory of each processing tool in its corresponding sub-processing area and the dwell time of each processing tool in each sub-processing area within each processing time period, an optical processing program is generated for the robot corresponding to each processing tool. This program controls each robot to drive its corresponding processing tool to process each sub-processing area, following the processing sequence set in step S5. When all processing tools have completed processing in their corresponding sub-processing areas, the current processing time period is considered complete, and the next processing time period begins. First, each processing tool is separated from the lens to be processed. Then, the workpiece stage is rotated to rotate the lens to be processed by a preset angle, bringing each sub-processing area of ​​the lens to be processed within the processing range of each processing tool. The preset rotation angle is related to the surface division area size of the lens to be processed in step S1. Similarly, each processing tool processes its corresponding sub-processing area according to the calculated dwell time for each processing time period, completing the processing task for the next processing time period. This process is repeated until the processing task of the lens to be processed is completed according to the processing sequence.

[0038] To verify the effectiveness of the method proposed in this embodiment, a circular lens with a diameter of 600mm was selected as the lens to be processed, and a two-tool time-sharing and zone-based processing method was used as an example: Step S1: As Figure 2 As shown, with the center point of the circular lens as the origin of the coordinate system and the X-axis as the dividing line, the entire circular lens is divided into two semicircular regions, Q1 and Q2. Q1 is the semicircular region where Y+ is located in the coordinate system, and Q2 is the semicircular region where Y- is located in the coordinate system.

[0039] Step S2: Select two small rotating grinding heads of different sizes as processing tools, which are denoted as Tool1 and Tool2 respectively. Tool1 has a diameter of 50mm and an eccentricity of 5mm; Tool2 has a diameter of 80mm and an eccentricity of 8mm.

[0040] Based on the geometric parameters and motion characteristics of the small rotating grinding head, the removal function model is established as follows: ; in, Indicates the distance from the center of rotation of the machining tool. The radius of the grinding disc of the machining tool. This refers to the offset of the grinding wheel rotation of the machining tool.

[0041] Step S3: Select the grating processing trajectory. The grating lines are parallel to the X-axis. The trajectory step size of Tool1 is 5mm, the trajectory spacing is 5mm, and the margin is 15mm. The trajectory step size of Tool2 is 8mm, the trajectory spacing is 8mm, and the margin is 20mm.

[0042] Step S4: Based on the removal functions R1(x,y) and R2(x,y), the surface shape error Z(x,y) of the mirror to be processed, and the material convolution removal model, calculate the processing dwell times D1(x,y) and D2(x,y) at each tool trajectory dwell point. The formula for the material convolution removal model is: .

[0043] Step S5: Plan the machining sequence of the two machining tools Tool1 and Tool2. Tool1 will first machine the Q1 area, while Tool2 will machine the Q2 area at the same time; then Tool1 will machine the Q2 area, while Tool2 will machine the Q1 area at the same time.

[0044] Step S6: Place the lens to be processed onto the rotary workpiece stage, and control the rotation angle of the rotary workpiece stage. The two processing tools, Tool1 and Tool2, are controlled by two robots, Robot1 and Robot2, respectively. The two robots are placed on opposite sides of the rotary workpiece stage. Based on the processing trajectory selected in Step 3 and the dwell time of each processing tool in each sub-processing area... Generate an optical processing program and execute the processing program according to the processing sequence planned in step 5.

[0045] Before processing begins, the rotating workpiece stage rotates the lens to be processed, dividing it into regions Q1 and Q2, and moves them into the processing range of Robot1 and Robot2. During processing, Tool1 enters from the boundary of the region near the X-axis and processes along the processing trajectory in the Y+ direction, while Tool2 enters from the boundary of the region far from the X-axis near the edge of the lens to be processed and processes along the processing trajectory in the Y- direction, thus reducing the impact of robot interference.

[0046] When each processing tool completes processing in its corresponding area and is ready to switch to the next area, the robot controls each processing tool to separate from the lens to be processed, rotates the workpiece table by 180°, and rotates each sub-processing area into the processing range of each processing tool, thus starting the processing task of each processing tool's processing time.

[0047] Referring to the above scheme, for a piece of... Figure 3 The optical lens shown has a diameter of 600mm and was simulated during manufacturing. The initial surface shape peak-valley value of the lens is 7.378 × 10⁻⁶. -3 mm, root mean square value is 1.525 × 10 -3 mm. For example, Figure 4 As shown, after simulation machining using Tool1 with a small grinding head of 50mm diameter and 5mm eccentricity, the surface peak-valley value is 2.637×10. -3 mm, root mean square value is 9.640 × 10 -5 mm, processing time 524 min; such as Figure 5As shown, after simulation machining using Tool2 with a small grinding head of 80mm diameter and 8mm eccentricity, the surface peak-valley value is 2.801×10⁻⁶. -3 mm, root mean square value is 1.004 × 10 -4 mm, processing time 207 min; such as Figure 6 As shown, after processing using a combination of two tools, the peak-valley value of the surface shape is 2.470 × 10⁻⁶. -3 mm, root mean square value is 7.406 × 10 -5 The machining time was 149 minutes and the surface area was mm. Simulation results show that this method can effectively improve the surface accuracy and machining efficiency of the mirror. Compared with the surface area after single-tool machining and combined machining, this method can effectively suppress the ringing effect.

[0048] In summary, the above description is merely a preferred embodiment of this specification and is not intended to limit the scope of protection of this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of protection of this specification.

[0049] The systems, apparatuses, modules, or units described in one or more of the above embodiments may be implemented by a computer chip or entity, or by a product having a certain function. A typical implementation device is a computer. Specifically, a computer may be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smartphone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or any combination of these devices.

[0050] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

Claims

1. A multi-tool time-division and zone-division optical lens polishing method based on a rotating workpiece stage, characterized in that, include: S1: Obtain the surface shape error of the lens to be processed, and divide the lens to be processed into multiple sub-processing areas; S2: Select multiple machining tools and determine the removal function for each machining tool; S3: Set the machining trajectory for each machining tool within each sub-machining area; S4: Based on the removal function and processing trajectory of each processing tool, as well as the surface shape error of the lens to be processed, the dwell time of each processing tool in each sub-processing area is calculated by the material convolution removal model; S5: Set the processing sequence for each processing tool for each sub-processing area, and determine the sub-processing area processed by each processing tool within each processing time period; S6: Place the lens to be processed on the rotating workpiece stage. During each processing period, each processing tool processes the sub-processing area corresponding to the current processing period according to the calculated dwell time. In the next processing period, the rotating workpiece stage drives the lens to be processed to rotate by a preset angle, and each processing tool processes the sub-processing area corresponding to its respective processing period according to the calculated dwell time.

2. The multi-tool time-division and zone-division optical lens polishing method based on a rotating workpiece stage according to claim 1, characterized in that, In step S2, the type and size of each processing tool are determined based on the processing stage of the lens to be processed, the target surface accuracy, and the frequency band error distribution of the lens to be processed.

3. The multi-tool time-division and zone-division optical lens polishing method based on a rotating workpiece stage according to claim 1, characterized in that, The removal function for each machining tool is obtained by establishing a removal function model or through actual machining tests.

4. The multi-tool time-division and zone-division optical lens polishing method based on a rotating workpiece stage according to claim 1, characterized in that, The machining trajectory of the same machining tool transitions continuously across different sub-machining areas.

5. The multi-tool time-division and zone-division optical lens polishing method based on a rotating workpiece stage according to claim 1, characterized in that, The material convolution removal model is as follows: ； in, Indicates the amount removed. " represents a two-dimensional convolution operation. , , , These represent the removal functions for each machining tool. , , , Each processing tool represents the lens to be processed. The dwell time at the location, where n represents the number of processing tools.

6. The multi-tool time-division and zone-division optical lens polishing method based on a rotating workpiece stage according to claim 5, characterized in that, S5 further includes: calculating the dwell time of each processing tool in each sub-processing area based on the dwell time distribution of each processing tool on the entire lens to be processed and the processing trajectory corresponding to each processing tool in each sub-processing area. , where j represents the j-th tool and k represents the k-th region.

7. The multi-tool time-division and zone-division optical lens polishing method based on a rotating workpiece stage according to claim 6, characterized in that, S5 further includes: adjusting the removal function of each processing tool to change the dwell time of each processing tool in the corresponding sub-processing area, so that the maximum difference in the dwell time of all processing tools in the corresponding sub-processing area within the same processing period is less than a preset value.

8. The multi-tool time-division and zone-division optical lens polishing method based on a rotating workpiece stage according to claim 1, characterized in that, The removal function of the processing tool is adjusted by changing the rotational speed of the processing tool and / or the pressure exerted by the processing tool on the lens to be processed.

9. The multi-tool time-division and zone-division optical lens polishing method based on a rotating workpiece stage according to claim 1, characterized in that, When each processing tool completes processing in the sub-processing area corresponding to the current processing time period, it controls the processing tool to separate from the lens to be processed, and then drives the lens to be processed to rotate by a preset angle through the rotating workpiece table to carry out processing in the next processing time period.

Images