Optical remote sensing load micro-lens assembly centering tool and use method

Abstract

The application discloses a kind of optical remote sensing load micro-lens assembly centering lathe tool and method, comprising: mirror seat, pressure circle and lens, the lens is set on mirror seat, the pressure circle is set on mirror seat by mounting thread, and the lens is matched with pressure circle, further comprising: centering lathe tool assembly and holding tire tool assembly, the centering lathe tool assembly is used to be connected with lathe main shaft, connecting thread is opened on the centering lathe tool assembly, the connecting thread is consistent with the mounting thread specification for installing pressure circle on mirror seat, and the axial end surface of the centering lathe tool assembly and the pressure circle exist in the clearance in assembly state, and the application relates to the field of optical precision manufacturing and processing, tool and pressure circle always maintain non-contact state, this structure completely blocks the transmission path of clamping force to lens surface, prevents lens surface distortion or damage caused by mechanical stress, ensures the surface precision and stability of optical element.

Description

Technical Field

[0001] This invention relates to the field of optical precision manufacturing and processing, specifically to a centering machine tool for a microlens assembly for optical remote sensing payloads and its usage method. Background Technology

[0002] As a core component of high-end optoelectronic systems such as satellites and drones, the imaging quality of optical remote sensing payloads is highly dependent on the coaxiality and positional accuracy of microlens components. The lens mount, as the supporting reference for the lens, typically requires the geometric coaxiality of its outer circle and end face to be controlled within 5 micrometers. To meet this stringent requirement, the industry generally adopts a centering turning process to perform precision machining on the lens mount.

[0003] In traditional technical solutions, in addition to having a standard thread for installing the pressure ring, the lens mount design also requires an additional dedicated centering machining tool thread. The lens optical axis is initially aligned with the lathe spindle by screwing the traditional centering machining tool into this process thread and abutting the process step. Then, the A and B surfaces of the lens mount are machined in sequence. However, the aforementioned traditional processes have significant structural and efficiency defects. Designing and machining a special process thread on the lens mount that is inconsistent with the thread specification of the pressure ring not only increases the radial or axial structural dimensions of the lens mount, making miniaturization design more difficult, but also makes the structure redundant and complex, increasing the cost of blank machining. Moreover, this process thread becomes a useless structure after machining, resulting in resource waste. Secondly, the traditional machining process requires two independent clamping and optical axis alignment operations: after completing the turning of surfaces A and B, the lens mount must be clamped in reverse with a new clamping fixture, and a complex optical axis alignment (eccentricity ≤ 5μm, tilt ≤ 5″) must be performed again before machining surface C. This process is highly dependent on the operator's experience, and each optical axis alignment takes a long time. Furthermore, multiple disassembly and assembly can easily introduce human error and clamping deformation, making it difficult to stably control the coaxiality of surfaces A, B, and C, resulting in a high risk of dimensional deviations and rework. Therefore, in order to solve this problem, it is necessary to design a centering machining fixture and usage method for microlens components of optical remote sensing payloads. Summary of the Invention

[0004] To address the structural and efficiency deficiencies in existing technologies that lead to increased raw material processing costs, resource waste, and risks of dimensional deviations and rework, this invention provides a centering lathe tooling for microlens assemblies of optical remote sensing payloads and its usage method.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a centering fixture for a microlens assembly of an optical remote sensing payload, comprising: Lens mount, pressure ring, and lens; The lens is mounted on the lens mount, and the pressure ring is mounted on the lens mount via a mounting thread, and the lens and the pressure ring are matched. Also includes: Centering tooling components and tire clamping tooling components; The centering lathe tooling assembly is used to connect with the lathe spindle. The centering lathe tooling assembly has a connecting thread. The connecting thread has the same specification as the mounting thread on the mirror mount for mounting the pressure ring. The axial end face of the centering lathe tooling assembly and the pressure ring have a clearance clearance in the assembled state. The tire-holding fixture assembly is used to reverse-clamp the mirror mount after the centering car fixture assembly has completed the initial processing.

[0006] Preferably, the centering tooling assembly includes: A first connecting housing and a second connecting housing; The first connecting shell and the second connecting shell are integrally formed. The outer diameter of the second connecting shell is larger than the outer diameter of the first connecting shell, and the inner diameter of the second connecting shell is larger than the inner diameter of the first connecting shell.

[0007] Preferably, the second connecting housing is used for fixed connection with the lathe spindle, and the connecting thread is formed on the outer surface of the first connecting housing.

[0008] Preferably, the tire-holding tooling assembly includes: The first annular mounting housing, the annular limiting plate, and the second annular mounting housing; The annular limiting plate is disposed on the rear surface of the first annular mounting housing, and the second annular mounting housing is disposed on the rear surface of the annular limiting plate.

[0009] Preferably, the second annular mounting housing is matched with the lathe spindle, and the inner wall of the first annular mounting housing mates with the outer circular surface of the mirror base to hold the mirror base tightly. The front end face of the annular limiting plate abuts against the second end face of the mirror base, thereby limiting the axial position of the mirror base.

[0010] Preferably, the first connecting housing of the centering machine tooling assembly has an avoidance recess inside, and the axial depth of the avoidance recess is greater than the axial height of the pressure ring, so that after the centering machine tooling assembly is tightened with the mirror mount, the pressure ring is completely accommodated in the avoidance recess, and the avoidance gap is maintained between the front end face of the pressure ring and the bottom surface of the avoidance recess.

[0011] Preferably, the axial distance of the clearance gap is not less than 0.5 mm, which is used to ensure that the centering machine tooling assembly does not come into contact with the pressure ring during the clamping process.

[0012] A method for using a centering fixture for a microlens assembly of an optical remote sensing payload includes the following steps: Step 1: Install the centering lathe tooling assembly onto the lathe spindle; Step 2: Screw the lens mount with the lens and pressure ring into the connecting thread of the centering machine tool assembly; Step 3: Use the optical tube imaging system to detect the optical axis of the lens, and adjust the position of the lens mount so that the eccentricity error between the optical axis of the lens and the axis of the lathe spindle is ≤5μm and the tilt error is ≤5μm. Step 4: Start the lathe and turn the first end face, the second end face and the outer cylindrical surface of the mirror base in sequence. During the machining process, keep the relative position of the mirror base and the lathe spindle unchanged. Step 5: Remove the lens mount; Step 6: Use the clamping fixture assembly to reverse-clamp the mirror mount from the machined outer cylindrical surface; Step 7: Install the tire clamping fixture assembly onto the lathe spindle; Step 8: Directly turn to remove the reserved process allowance on the back of the mirror mount to form the third end face.

[0013] Preferably, the centering machine tooling assembly and the mirror mount are connected by a common thread, and in the tightened state, a clearance of 0.5mm to 2mm is maintained between the axial end face of the centering machine tooling assembly and the end face of the pressure ring.

[0014] Preferably, the tire-holding fixture assembly is connected to the lathe spindle through the second annular mounting housing, so that the inner wall of the first annular mounting housing grips the outer circular surface of the mirror base, while the front end face of the annular limiting plate abuts against the end face of the mirror base, thereby achieving centering and clamping.

[0015] The present invention has the following beneficial effects: The optical remote sensing payload microlens assembly centering machine tooling and its usage method described in this invention eliminates the special process threads on the lens mount, unifying the connecting threads of the centering machine tooling with the mounting threads of the pressure ring. This fundamentally simplifies the structural design of the lens mount. This improvement eliminates redundant process bosses or internal thread sections in the traditional structure, effectively reducing the radial or axial dimensions of the lens mount, lowering the difficulty of blank processing and manufacturing costs. At the same time, the simplified structure is more conducive to the development of optical remote sensing payloads towards lightweight and miniaturization, meeting the stringent space constraints of aerospace equipment.

[0016] The method described in this invention employs a process route of one optical axis alignment and two clamping operations, which significantly improves processing efficiency. After aligning the lens optical axis with the lathe spindle using a novel centering lathe fixture, multiple end faces and outer cylindrical surfaces of the lens mount can be continuously machined in a single clamping state. Subsequently, the machined high-precision outer cylindrical surface is directly clamped by a jig fixture for reverse machining to remove excess material, completely eliminating the second optical axis alignment operation required in the traditional process. This process greatly shortens the single-piece processing cycle and reduces the dependence on the skill level of the operator.

[0017] The method described in this invention, based on a continuous machining mode with a single reference, effectively ensures the coaxiality accuracy of the final product. By avoiding the cumulative errors and clamping deformation risks caused by secondary clamping and alignment in traditional processes, the geometric coaxiality of each end face and outer circular surface of the lens mount can be stably controlled. The fixture uses the already machined outer circle of the lens mount as a positioning reference to achieve precise positioning, significantly reducing the probability of dimensional deviations caused by repeated positioning errors, and improving the product yield and optical imaging quality.

[0018] The method described in this invention, by setting a clearance groove inside the centering machine tool and strictly controlling the axial clearance between the end face of the tool and the pressure ring, ensures that the tool and the pressure ring remain in a non-contact state during high-speed rotation and clamping. This structure completely blocks the transmission path of clamping force to the lens surface, prevents lens surface distortion or damage caused by mechanical stress, and ensures the surface accuracy and stability of the optical element. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the microlens assembly described in this invention after processing.

[0020] Figure 2 This is a schematic diagram of the structure to be processed for the microlens assembly described in this invention.

[0021] Figure 3 This is a schematic diagram of the centering machine tooling assembly described in this invention.

[0022] Figure 4 This is a schematic diagram of the structure of the tire-holding tooling assembly described in this invention.

[0023] Figure 5 This is a schematic diagram of the assembly of the centering machine tooling component and the lens component described in this invention.

[0024] Figure 6 This is a schematic diagram of the machining state after the centering machining tooling assembly and lens assembly of the present invention are assembled.

[0025] Figure 7 This is a schematic diagram of the assembly of the tire-holding tooling component and the mirror mount described in this invention.

[0026] Figure 8 This is a schematic diagram of the machining state of the tire-holding tooling assembly and mirror mount after assembly according to the present invention.

[0027] Figure 9 This is a schematic diagram of the structure of the mirror mount described in this invention.

[0028] In the picture: 1. Lens mount; 2. Pressure ring; 3. Lens; 4. Centering lathe tooling assembly; 5. Tire clamping tooling assembly; 6. Lathe spindle; 41. First connecting housing; 42. Second connecting housing; 51. First annular mounting housing; 52. Annular limiting plate; 53. Second annular mounting housing. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-9 This invention provides a technical solution: a centering lathe tooling for a microlens assembly of an optical remote sensing payload, comprising: a lens mount 1, a pressure ring 2, and a lens 3. The lens 3 is mounted on the lens mount 1, and the pressure ring 2 is mounted on the lens mount 1 via an installation thread, and the lens 3 and the pressure ring 2 are matched. It also includes: a centering lathe tooling assembly 4 and a tire clamping tooling assembly 5. The centering lathe tooling assembly 4 is used to connect to a lathe spindle 6. The centering lathe tooling assembly 4 has a connecting thread, and the connecting thread has the same specification as the installation thread on the lens mount 1 used to install the pressure ring 2. The axial end face of the centering lathe tooling assembly 4 and the pressure ring 2 have a clearance clearance in the assembled state. The tire clamping tooling assembly 5 is used to reverse clamp the lens mount 1 after the centering lathe tooling assembly 4 has completed preliminary processing.

[0031] The centering machine tooling assembly 4 includes: a first connecting shell 41 and a second connecting shell 42, which are integrally formed. The outer diameter of the second connecting shell 42 is larger than the outer diameter of the first connecting shell 41, and the inner diameter of the second connecting shell 42 is larger than the inner diameter of the first connecting shell 41.

[0032] The second connecting housing 42 is used for fixed connection with the lathe spindle 6, and the connecting thread is formed on the outer surface of the first connecting housing 41.

[0033] The centering lathe tooling assembly 4 is used to connect with the lathe spindle 6. The centering lathe tooling assembly 4 has a stepped shaft structure. The first connecting housing 41 and the second connecting housing 42 are integrally forged from alloy steel and precision ground. The outer diameter of the second connecting housing 42 is larger than the outer diameter of the first connecting housing 41, and the inner diameter of the second connecting housing 42 is also larger than the inner diameter of the first connecting housing 41. The second connecting housing 42 is used to fit, position and fix the lathe spindle 6. A connecting thread is provided on the outer surface of the first connecting housing 41. The nominal diameter, pitch and tolerance of the connecting thread are completely consistent with the mounting thread specifications on the mirror base 1 for mounting the pressure ring 2. The first connecting housing 41 has a clearance groove inside. The axial depth of the groove is greater than the axial height of the pressure ring 2, which is used to accommodate the pressure ring 2 and form an axial clearance gap.

[0034] The tire-holding tooling assembly 5 includes: a first annular mounting housing 51, an annular limiting plate 52, and a second annular mounting housing 53. The annular limiting plate 52 is disposed on the rear surface of the first annular mounting housing 51, and the second annular mounting housing 53 is disposed on the rear surface of the annular limiting plate 52.

[0035] The second annular mounting housing 53 is matched with the lathe spindle 6. The inner wall of the first annular mounting housing 51 is matched with the outer circular surface of the mirror base 1 to hold the mirror base 1 tightly. The front end face of the annular limiting plate 52 abuts against the second end face of the mirror base 1 to limit the axial position of the mirror base 1.

[0036] The clamping fixture assembly 5 is used to reverse-clamp the mirror base 1 after the centering car fixture assembly 4 has completed the initial processing. The annular limiting plate 52 is fixed to the rear surface of the first annular mounting housing 51, and the second annular mounting housing 53 is set on the rear surface of the annular limiting plate 52. The inner wall surface of the first annular mounting housing 51 matches the outer circular surface of the mirror base 1 to clamp the mirror base 1. The front end face of the annular limiting plate 52 abuts against the end face of the mirror base 1 to limit the axial displacement of the mirror base 1. The second annular mounting housing 53 may have three or four evenly distributed opening slots along the axial direction. These opening slots extend from front to back to the annular limiting plate 52, so that the second annular mounting housing 53 forms a thin-walled sleeve structure that can be radially elastically contracted, thereby ensuring that the first annular mounting housing 51 can generate uniform elastic deformation to clamp the workpiece when subjected to force.

[0037] The first connecting housing 41 of the centering machine tooling assembly 4 has an avoidance recess inside. The axial depth of the avoidance recess is greater than the axial height of the pressure ring 2, so that after the centering machine tooling assembly 4 and the mirror mount 1 are tightened, the pressure ring 2 is completely accommodated in the avoidance recess, and an avoidance gap is maintained between the front end face of the pressure ring 2 and the bottom surface of the avoidance recess.

[0038] The axial distance of the clearance clearance is not less than 0.5mm, which is used to ensure that the centering machine tooling assembly 4 does not come into contact with the pressure ring 2 during the clamping process.

[0039] A method for using a centering lathe fixture for an optical remote sensing payload microlens assembly includes the following steps: Step 1, installing the centering lathe fixture assembly 4 onto the lathe spindle 6; Step 2, screwing the lens mount 1, which includes the lens 3 and the pressure ring 2, into the connecting thread of the centering lathe fixture assembly 4 (see...). Figure 5 Step 3: Use the optical tube imaging system to detect the optical axis of lens 3, and adjust the position of lens mount 1 so that the eccentricity error between the optical axis of lens 3 and the axis of lathe spindle 6 is ≤5μm, and the tilt error is ≤5μm; Step 4: Start the lathe and turn the first end face, the second end face, and the outer cylindrical surface of lens mount 1 in sequence, keeping the relative position of lens mount 1 and lathe spindle 6 unchanged during the machining process (see...). Figure 6 Step 5: Remove mirror mount 1; Step 6: Use the tire clamping fixture 5 to clamp the mirror mount 1 from the machined outer cylindrical surface in the reverse direction; Step 7: Install the tire clamping fixture 5 onto the lathe spindle 6 (see...). Figure 7 Step 8: Directly turn to remove the reserved process allowance on the back of mirror mount 1 to form the third end face (see...). Figure 8 ).

[0040] The centering machine tooling assembly 4 and the mirror mount 1 are connected by a common thread, and in the tightened state, a clearance of 0.5mm to 2mm is maintained between the axial end face of the centering machine tooling assembly 4 and the end face of the pressure ring 2.

[0041] The tire clamping fixture 5 is connected to the lathe spindle 6 through the second annular mounting housing 53, so that the inner wall of the first annular mounting housing 51 clamps the outer circular surface of the mirror base 1, while the front end of the annular limiting plate 52 abuts against the end face of the mirror base 1, thereby achieving centering and clamping.

[0042] First, the second connecting housing 42 of the centering lathe tooling assembly 4 is installed onto the lathe spindle 6 of the centering lathe to achieve precise positioning and fastening. Next, the lens mount 1, equipped with the lens 3 and pressure ring 2, is screwed into the connecting thread of the first connecting housing 41 of the centering lathe tooling assembly 4. During tightening, because the first connecting housing 41 has an clearance groove inside, and the depth of the clearance groove is greater than the height of the pressure ring 2, the pressure ring 2 will completely enter the groove. When tightened until the axial end face of the centering lathe tooling assembly 4 is in contact with the reference shoulder of the lens mount 1, an axial clearance gap of 0.5mm to 2mm remains between the front end face of the pressure ring 2 and the bottom surface of the clearance groove. The setup ensures that the centering lathe fixture assembly 4 will never touch the pressure ring 2 during subsequent high-speed rotation and clamping, thus blocking the transmission path of clamping force to the lens 3. Then, the lathe spindle 6 is started and rotated at a low speed. The crosshair image or self-collimated reflection image of the lens 3 is observed using the optical tube imaging system. By fine-tuning the circumferential angle and axial position of the lens mount 1 within the fixture, the optical axis of the lens 3 is adjusted to have an eccentricity error of less than or equal to 5 micrometers and a tilt error of less than or equal to 5 seconds with respect to the axis of the lathe spindle 6. After adjustment, the lens mount 1 is locked axially using the locking mechanism. After the optical axis is aligned and locked, the lathe is started for cutting, with the tool feeding sequentially according to the dimensions in the drawing. To meet tolerance requirements, the first end face, second end face, and outer cylindrical surface of the mirror mount 1 are machined by turning. A small depth of cut and high speed finish turning process is selected. Since the mirror mount 1 maintains a constant relative position with the lathe spindle 6 throughout the machining process and is in a single-clamp state, the coaxiality of the machined surfaces can be guaranteed. After this step, the main body shape and two reference end faces of the mirror mount 1 are machined in place. Its outer cylindrical surface serves as the process reference for subsequent processes. The lathe is shut down, the pre-machined mirror mount 1 is loosened and removed, and the jig-holding fixture assembly 5 is installed onto the lathe spindle 6. The tapered surface of the outer wall of the second annular mounting housing 53 of the jig-holding fixture assembly 5 is used for machining. Connected to the lathe spindle 6, the first annular mounting housing 51 of the lens mount 1 is inserted into the tire clamping fixture assembly 5. The inner wall of the first annular mounting housing 51 clamps the machined outer circular surface of the lens mount 1. At the same time, the front end face of the annular limiting plate 52 abuts against the second end face of the lens mount 1 to achieve high-precision centering and axial limiting. Since the outer circular surface of the lens mount 1 has been machined based on the optical axis reference in step 2, the tire clamping fixture assembly 5 is holding a high-precision reference surface. Therefore, there is no need to perform optical axis alignment again. The lathe is started directly to machine and remove the reserved process allowance on the back of the lens mount 1 to form the final third end face. Thus, the centering machining of the entire microlens assembly is completed.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A centering fixture for a microlens assembly of an optical remote sensing payload, comprising: Lens mount (1), pressure ring (2), and lens (3); The lens (3) is mounted on the lens base (1), and the pressure ring (2) is mounted on the lens base (1) by means of a mounting thread, and the lens (3) is matched with the pressure ring (2); Its characteristic is that it further includes: Centering tooling assembly (4) and tire clamping tooling assembly (5); The centering lathe tooling assembly (4) is used to connect with the lathe spindle (6). The centering lathe tooling assembly (4) is provided with a connecting thread. The connecting thread is consistent with the mounting thread on the mirror mount (1) used to install the pressure ring (2). The axial end face of the centering lathe tooling assembly (4) and the pressure ring (2) have a clearance clearance in the assembled state. The tire clamping fixture assembly (5) is used to reverse clamp the mirror mount (1) after the centering car fixture assembly (4) has completed the initial processing.

2. The centering fixture for a microlens assembly of an optical remote sensing payload according to claim 1, characterized in that, The centering car tooling assembly (4) includes: First connecting housing (41) and second connecting housing (42); The first connecting shell (41) and the second connecting shell (42) are integrally formed. The outer diameter of the second connecting shell (42) is larger than the outer diameter of the first connecting shell (41), and the inner diameter of the second connecting shell (42) is larger than the inner diameter of the first connecting shell (41).

3. The centering fixture for a microlens assembly of an optical remote sensing payload according to claim 2, characterized in that, The second connecting housing (42) is used for fixed connection with the lathe spindle (6), and the connecting thread is formed on the outer surface of the first connecting housing (41).

4. The centering fixture for a microlens assembly of an optical remote sensing payload according to claim 1, characterized in that, The tire clamping tooling assembly (5) includes: The first annular mounting housing (51), the annular limiting plate (52), and the second annular mounting housing (53); The annular limiting plate (52) is provided on the rear surface of the first annular mounting housing (51), and the second annular mounting housing (53) is provided on the rear surface of the annular limiting plate (52).

5. The centering fixture for a microlens assembly of an optical remote sensing payload according to claim 4, characterized in that, The second annular mounting housing (53) is matched with the lathe spindle (6), and the inner wall of the first annular mounting housing (51) is matched with the outer circular surface of the mirror base (1) to hold the mirror base (1). The front end face of the annular limiting plate (52) abuts against the second end face of the mirror base (1) to limit the axial position of the mirror base (1).

6. The centering fixture for a microlens assembly of an optical remote sensing payload according to claim 2, characterized in that, The first connecting housing (41) of the centering machine tooling assembly (4) is provided with a clearance recess. The axial depth of the clearance recess is greater than the axial height of the pressure ring (2), so that after the centering machine tooling assembly (4) and the mirror mount (1) are tightened, the pressure ring (2) is completely accommodated in the clearance recess, and the clearance gap is maintained between the front end face of the pressure ring (2) and the bottom surface of the clearance recess.

7. The centering fixture for a microlens assembly of an optical remote sensing payload according to claim 1, characterized in that, The axial distance of the clearance is not less than 0.5mm, which is used to ensure that the centering machine tooling assembly (4) does not come into contact with the pressure ring (2) during the clamping process.

8. The method of using a centering lathe tooling for an optical remote sensing payload microlens assembly according to claim 1, characterized in that, Includes the following steps: Step 1: Install the centering lathe tooling assembly (4) onto the lathe spindle (6); Step 2: Screw the lens mount (1) with lens (3) and pressure ring (2) into the connecting thread of the centering machine tool assembly (4); Step 3: Use the optical tube imaging system to detect the optical axis of the lens (3), and adjust the position of the lens mount (1) so that the eccentricity error between the optical axis of the lens (3) and the axis of the lathe spindle (6) is ≤5μm and the tilt error is ≤5μm; Step 4: Start the lathe and turn the first end face, the second end face and the outer cylindrical surface of the mirror base (1) in sequence. During the machining process, keep the relative position of the mirror base (1) and the lathe spindle (6) unchanged. Step 5, Remove the lens mount (1); Step 6: Use the clamping fixture assembly (5) to reverse-clamp the mirror base (1) from the machined outer cylindrical surface; Step 7: Install the tire clamping fixture assembly (5) onto the lathe spindle (6); Step 8: Directly turn and remove the reserved process allowance on the back of the mirror mount (1) to form the third end face.

9. The method of using a centering lathe tooling for an optical remote sensing payload microlens assembly according to claim 8, characterized in that, The centering machine tooling assembly (4) and the mirror mount (1) are connected by a common thread, and in the tightened state, a clearance of 0.5mm to 2mm is maintained between the axial end face of the centering machine tooling assembly (4) and the end face of the pressure ring (2).

10. A method for using a centering lathe tooling for an optical remote sensing payload microlens assembly according to claim 9, characterized in that, The tire clamping fixture assembly (5) is connected to the lathe spindle (6) through the second annular mounting housing (53), so that the inner wall of the first annular mounting housing (51) clamps the outer circular surface of the mirror base (1), and at the same time, the front end of the annular limiting plate (52) abuts against the end face of the mirror base (1) to achieve centering and clamping.

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