Differential thread fine-tuning four-dimensional chuck device, assembly method and adjustment method

Abstract

The present invention discloses a differential thread fine-tuning four-dimensional chuck device, an assembly method and an adjustment method, wherein the fine-tuning four-dimensional chuck device comprises a spindle connection plate, a fixed frame, a translation stage, a translation frame, a rotating stage, a cover plate and a thread adjustment device, wherein the thread adjustment device comprises a housing, a gland, a differential screw, a push rod, a pin and a ball head. The present invention also provides an assembly method and an adjustment method, which solves the problem of high-precision control of the existing four-dimensional chuck.

Description

Technical Field

[0001] The invention relates to the technical field of four-dimensional chuck device adjustment, and in particular to a differential thread fine-tuning four-dimensional chuck device, an assembling method and an adjustment method. Background Art

[0002] With the rapid development of optical technology, the degree of advancement of a country can be measured by the number of high-performance optical lenses it produces each year. This shows that the optical level increasingly affects the overall technical level of a country. The quality of optical imaging lenses directly affects the development of optical guided weapons, and the detection quality of optical systems directly affects the development of related industrial technologies. The quality of various optical lenses is directly limited by optical design, optical materials, optical processing, optical assembly and adjustment technologies, among which optical assembly and adjustment technology has become a bottleneck in the development of my country's optical technology.

[0003] The assembly accuracy of the optical system depends entirely on the machining accuracy of the mechanically processed parts and the optically processed parts. Once the machining is completed, the optical axis consistency error between the lenses in the optical lens group cannot be eliminated. In recent years, with the rapid development and increasing application of optical parts processing technology, ordinary mechanical processing equipment can no longer meet the requirements. It is necessary to combine mechanical processing equipment and optical processing equipment to enable the production equipment to produce high-standard optical components.

[0004] Centering turning is an efficient and low-cost method for manufacturing such high-precision optical components. It can ensure the alignment accuracy of the lens, and the centering turning process can be completely independent of the characteristics of the lens fixed in the lens holder. The centering accuracy depends largely on the positioning accuracy of the alignment chuck. The four-degree-of-freedom chuck is a three-layer structure, one connecting disk, one translation, and one tilting. The tilting uses a ball bowl structure, and the fine adjustment uses a differential thread fine adjustment device. At present, there is a problem that the coarse adjustment and fine adjustment cannot be integrated in the four-dimensional chuck adjustment process. Summary of the invention

[0005] The present invention proposes a differential thread fine-tuning four-dimensional chuck device, an assembly method and an adjustment method, the purpose of which is to fix a translation stage and a rotation stage by tilting screws, and to solve the problem that coarse adjustment and fine adjustment cannot be integrated during the four-dimensional chuck adjustment process by adjusting the differential thread device of the screw.

[0006] The technical solution of the present invention is:

[0007] In a first aspect, the present invention discloses a differential thread fine-tuning four-dimensional chuck device, the fine-tuning four-dimensional chuck device comprises a spindle connection plate, a fixed frame, a translation stage, a translation frame, a rotating stage, a cover plate and a thread adjustment device, the thread adjustment device comprises a housing, a pressure cover, a differential screw, a push rod, a pin and a ball head;

[0008] The spindle connecting plate is an I-shaped structure with a hollow interior, with threaded holes in the upper and lower parts respectively, the bottom is connected to the spindle, the top is connected to the fixed frame, and the top is provided with a step surface for fixing the frame to limit the position;

[0009] The fixing frame is provided with a threaded hole at the bottom and four inclined threaded holes on the side wall for installing adjustment screws;

[0010] One end of the translation platform is a plane, and the other end is a spherical surface, which can be translated and slid by adjusting screws and pressed against the spindle connection plate;

[0011] The bottom of the translation frame is provided with a threaded hole, and the side wall is provided with four inclined threaded holes for installing adjustment screws;

[0012] One end of the rotating table is a plane, and the other end is a spherical surface, which can be tilted and slid by adjusting screws and pressed against the translation table;

[0013] The cover plate is a square flat plate structure with rounded corners, has four through holes, and is fixed on the rotating table;

[0014] The shell is a frame with a hollow interior, a wide pitch thread is arranged on the exterior of the shell, a narrow pitch thread and a limit pin hole are arranged on the interior, and a step is arranged on the top of the shell;

[0015] The top of the gland has a wide thread that matches the thread inside the shell. After being screwed into the top of the shell, it rests on the step of the shell and has a hexagonal hole inside.

[0016] The differential screw has an overall cylindrical shape, a hexagonal hole on the top, which is adjusted by a hexagonal wrench, a coarse pitch thread in the middle, which is connected to the hollow thread inside the shell, and a narrow pitch thread at the bottom, which is connected to the hollow thread inside the top rod;

[0017] The top rod is hollow inside, with one end having a narrow pitch thread, connected to the differential screw (9), and one end having a bowl-shaped structure and a pin positioning circular hole structure;

[0018] The pin is a cylindrical structure, passing through the limiting hole of the housing and connected to and fixed with the ejector rod;

[0019] The ball head is a spherical body, fixed on the top of the top rod, and can rotate freely 360 degrees.

[0020] In one embodiment, the translation stage is pressed against the main shaft connection plate by a tilt adjustment screw, and the tilt adjustment screw has two mechanical components in the horizontal and vertical directions, one for pressing the translation stage and the other for adjusting the translation stage in the horizontal direction.

[0021] In one embodiment, the rotating stage is pressed against the translation stage by a tilt adjustment screw, and the tilt adjustment screw has two mechanical components in the transverse and longitudinal directions, one for pressing the translation stage and the other for adjusting the translation stage in the horizontal direction.

[0022] In one embodiment, the outer portion of the housing is provided with a coarse adjustment thread, and the initial position of the four-dimensional chuck device is adjusted according to the thread feed amount.

[0023] In one embodiment, the gland has a hexagonal hole on the top, which can be adjusted by a common hexagonal wrench.

[0024] In one embodiment, the housing and the differential screw are connected via a wide pitch thread, and the differential threaded rod and the push rod are connected via a narrow pitch thread.

[0025] In one embodiment, the push rod is connected to the pin limiting hole of the housing via a pin, and the movement direction of the pin is limited by the shape of the limiting hole.

[0026] In one embodiment, the ball head is fixed to the top of the ejector rod to form rolling friction with the four-dimensional chuck device;

[0027] After the thread adjustment device is roughly adjusted into place using a hexagonal screwdriver, the hexagonal screwdriver continues to go deeper and reaches the hexagonal hole of the differential screw. The screwdriver push rod is rotated to slide relative to the housing to perform precise adjustment.

[0028] In a second aspect, the present invention discloses a method for assembling a turning optical system detection device, comprising the following steps:

[0029] Step 1: Grinding the flatness of the mounting surface of the structural parts

[0030] The first mounting surface of the spindle connecting plate is inspected and ground; after the first mounting surface is initially ground, the second mounting surface is ground with the first mounting surface as the reference surface until the requirements are met; the first mounting surface of the translation stage (3) is inspected and ground until the requirements are met;

[0031] Step 2: Install the thread adjustment device

[0032] The ball head is installed in the ball bowl structure of the ejector rod, the differential screw is screwed into the ejector rod through the fine pitch thread, the ejector rod is embedded in the housing, and a pin is inserted through the housing into the pin hole of the ejector rod to limit the sliding direction of the ejector rod, and the gland is screwed into the housing;

[0033] Step 3: Install the translation stage

[0034] Place the fixed frame on the step of the spindle connection plate and fix it with screws. Apply thread glue to the screws to prevent them from loosening. Pass the bottom of the translation stage through the fixed frame and place it in the center of the spindle connection plate. Apply thread glue to the outer threads of the shell and screw them into the threaded holes on the side walls of the fixed frame from four directions until the ball head contacts the translation stage. Wait for the thread glue to solidify.

[0035] Step 4: Install the rotating table

[0036] Place the translation frame on the translation stage and fix it with screws. Apply thread glue to the screws to prevent them from loosening. Pass the rotation table through the translation frame and place it on the translation stage. The arc surface of the rotation table contacts and overlaps with the arc surface of the translation table. Apply thread glue to the external threads of the shell and screw them into the threaded holes on the side walls of the translation frame from four directions until the ball head rotates. Wait for the thread glue to cure. Fix the cover plate to the translation frame.

[0037] In a third aspect, the present invention discloses a method for adjusting a differential thread fine-tuning four-dimensional chuck device, comprising the following steps:

[0038] Step 1: Rough adjustment of the horizontal (tilt) adjustment of the four-dimensional chuck device

[0039] First, install the adjustment screw into the inclined threaded hole on the fixed frame (translation frame) using a common hexagonal wrench. At this time, the ball head of the threaded adjustment device contacts the translation stage for coarse adjustment;

[0040] Step 2: Fine adjustment of the horizontal (tilt) adjustment of the four-dimensional chuck device

[0041] After the coarse adjustment is in place, the hexagonal screwdriver continues to go deeper and reaches the hexagonal hole of the differential screw. At this time, the screwdriver push rod will slide relative to the shell, and the ball head will change the sliding friction between the adjustment screw and the translation stage (rotation stage) into rolling friction, making the adjustment smoother; the pin slides back and forth in the notch of the shell to prevent the push rod from rotating, thereby changing the rotational motion of the screw into the translational motion of the push rod.

[0042] The beneficial technical effects of the present invention are:

[0043] The present invention discloses a differential thread fine-tuning four-dimensional chuck device, and also provides an assembly method and an adjustment method. The differential thread fine-tuning principle is used to integrate coarse thread and fine thread into one, and different pitch feed amounts are used to meet the control requirements of different adjustment precisions of the four-dimensional chuck, solving the high-precision control problem of the existing four-dimensional chuck. In particular, the problem that the coarse adjustment and fine adjustment cannot be integrated during the adjustment process of the four-dimensional chuck is solved. The device is not only simple to operate, but also improves the adjustment efficiency and adjustment precision of the four-dimensional chuck, and the brake is used to lock it after the adjustment is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the axonometric structure of one specific embodiment of the present invention;

[0045] Figure 2 A schematic diagram of the positional relationship of one specific external contour of the present invention;

[0046] Figure numerals: 1. spindle connecting plate; 2. fixed frame; 3. translation table; 4. translation frame; 5. rotation table; 6. cover plate; 7. housing; 8. pressure cover; 9. differential screw; 10. push rod; 11. pin; 12. ball head. DETAILED DESCRIPTION

[0047] In order to solve the problem that coarse adjustment and fine adjustment cannot be integrated during the adjustment of a four-dimensional chuck, an embodiment of the present invention provides a differential thread fine-tuning four-dimensional chuck device, an assembly method and an adjustment method.

[0048] The terms "first", "second", etc. in the description and claims of the embodiments of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein.

[0049] The "multiple or several" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0050] The preferred embodiments of the present invention are described below in conjunction with the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In addition, the embodiments of the present invention and the features in the embodiments may be combined with each other if there is no conflict.

[0051] Example 1

[0052] In the first aspect, the present invention discloses a differential thread fine-tuning four-dimensional chuck device, the fine-tuning four-dimensional chuck device comprises a spindle connection plate 1, a fixed frame 2, a translation stage 3, a translation frame 4, a rotating stage 5, a cover plate 6 and a thread adjustment device, the thread adjustment device comprises a housing 7, a pressure cover 8, a differential screw 9, a push rod 10, a pin 11 and a ball head 12;

[0053] The spindle connecting plate 1 is an I-shaped structure with a hollow interior, and has threaded holes at the upper and lower parts respectively. The bottom is connected to the spindle, and the top is connected to the fixed frame 2. The top is provided with a step surface for limiting the fixed frame 2.

[0054] The fixing frame 2 has a threaded hole at the bottom and four inclined threaded holes on the side wall for installing adjustment screws;

[0055] The translation stage 3 has a flat surface at one end and a spherical surface at the other end, which can be translated and slid by adjusting screws and pressed against the spindle connection plate;

[0056] The bottom of the translation frame 4 is provided with a threaded hole, and the side wall is provided with four inclined threaded holes for installing adjustment screws;

[0057] The rotating table 5 has a flat surface at one end and a spherical surface at the other end, and can be tilted and slid by adjusting screws and pressed against the translation table 3;

[0058] The cover plate 6 is a square flat plate structure with rounded corners, has four through holes, and is fixed on the rotating platform 5;

[0059] The shell 7 is a frame with a hollow interior, with wide pitch threads on the exterior, narrow pitch threads and a limit pin hole on the interior, and a step on the top of the shell;

[0060] The top of the gland 8 has a wide thread that matches the thread inside the shell. After being screwed into the top of the shell, it rests on the step of the shell and has a hexagonal hole inside.

[0061] The differential screw 9 is cylindrical in shape, with a hexagonal hole on the top for adjustment by a hexagonal wrench, a coarse pitch thread in the middle for connection with the hollow thread inside the housing, and a narrow pitch thread at the bottom for connection with the hollow thread inside the top rod;

[0062] The top rod 10 is hollow inside, with a narrow pitch thread at one end, connected to the differential screw 9, and has a bowl-shaped structure and a pin positioning circular hole structure at one end;

[0063] The pin 11 is a cylindrical structure, passing through the limiting hole of the housing and connected to and fixed to the top rod;

[0064] The ball head 12 is a spherical body, fixed on the top of the top rod, and can rotate freely 360 degrees.

[0065] In one embodiment, the translation stage 3 is pressed against the main shaft connection plate by a tilt adjustment screw. The tilt adjustment screw has two mechanical components in the horizontal and vertical directions, one for pressing the translation stage and the other for adjusting the translation stage in the horizontal direction.

[0066] In one embodiment, the rotating table 5 is pressed against the translation table 3 by a tilt adjustment screw. The tilt adjustment screw has two mechanical components in the horizontal and vertical directions, one for pressing the translation table 3 and the other for adjusting the translation table 3 in the horizontal direction.

[0067] In one embodiment, the outer portion of the housing 7 is provided with a coarse adjustment thread, and the initial position of the four-dimensional chuck device is adjusted according to the thread feed amount.

[0068] In one embodiment, the gland 8 has a hexagonal hole on the top, which can be adjusted by a common hexagonal wrench.

[0069] In one embodiment, the housing 7 and the differential screw 9 are connected via a wide pitch thread, and the differential screw rod 9 and the push rod 10 are connected via a narrow pitch thread.

[0070] In one embodiment, the push rod 10 is connected to the pin limiting hole of the housing 7 via the pin 11, and the movement direction of the pin 11 is limited by the shape of the limiting hole.

[0071] In one embodiment, the ball head 12 is fixed to the top of the ejector rod to form rolling friction with the four-dimensional chuck device;

[0072] After the thread adjustment device is roughly adjusted into place using a hexagonal screwdriver, the hexagonal screwdriver continues to go deeper and reaches the hexagonal hole of the differential screw 9. The screwdriver push rod 10 is rotated to slide relative to the housing 7 for precise adjustment.

[0073] Example 2

[0074] In a second aspect, the present invention discloses a method for assembling a turning optical system detection device, comprising the following steps:

[0075] Step 1: Grinding the flatness of the mounting surface of the structural parts

[0076] The first mounting surface of the spindle connecting plate is inspected and ground; after the first mounting surface is initially ground, the second mounting surface is ground with the first mounting surface as the reference surface until the requirements are met; the first mounting surface of the translation stage 3 is inspected and ground until the requirements are met;

[0077] Step 2: Install the thread adjustment device

[0078] The ball head 12 is installed in the ball bowl structure of the push rod 10, the differential screw 9 is screwed into the push rod 10 through the fine pitch thread, the push rod 11 is embedded in the housing 7, and the pin 11 is inserted through the housing 7 and embedded in the pin hole of the push rod 10 to limit the sliding direction of the push rod 10, and the pressure cover (8) is screwed into the housing 7;

[0079] Step 3: Install the translation stage

[0080] Place the fixed frame 2 on the step of the spindle connection plate 1 and fix it with screws. Apply thread glue to the screws to prevent them from loosening. The bottom of the translation stage 3 passes through the fixed frame 2 and is placed at the center of the spindle connection plate 1. Apply thread glue to the outer threads of the housing 7 and screw them into the threaded holes on the side walls of the fixed frame 2 from four directions until the ball head 12 contacts the translation stage 3. Wait for the thread glue to solidify.

[0081] Step 4: Install the rotating table

[0082] Place the translation frame 4 on the translation stage 3 and fix it with screws. Apply thread glue to the screws to prevent them from loosening. Pass the rotation table 5 through the translation frame 4 and place it on the translation stage 3. The arc surface of the rotation table 5 contacts and overlaps with the arc surface of the translation stage 3. Apply thread glue to the external threads of the shell 7 and screw them into the threaded holes on the side walls of the translation frame 4 from four directions until the ball head 12 rotates the rotation table 5 and wait for the thread glue to cure. Fix the cover plate 6 to the translation frame 4.

[0083] Example 3

[0084] In a third aspect, the present invention discloses a method for adjusting a differential thread fine-tuning four-dimensional chuck device, comprising the following steps:

[0085] Step 1: Coarse adjustment of the horizontal tilt of the four-dimensional chuck device

[0086] First, install the adjustment screw into the inclined threaded hole on the fixed frame translation frame using a common hexagonal wrench. At this time, the ball head of the threaded adjustment device contacts the translation stage for coarse adjustment;

[0087] Step 2: Fine-tune the horizontal tilt of the four-dimensional chuck device

[0088] After the coarse adjustment is in place, the hexagonal screwdriver continues to go deeper and reaches the hexagonal hole of the differential screw. At this time, the screwdriver push rod will slide relative to the shell, and the ball head will change the sliding friction between the adjustment screw and the translation stage rotation stage into rolling friction, making the adjustment smoother; the pin slides back and forth in the notch of the shell to prevent the push rod from rotating, thereby changing the rotational motion of the screw into the translational motion of the push rod.

[0089] The present invention discloses a differential thread fine-tuning four-dimensional chuck device, an assembly method and an adjustment method, which solves the problem of high-precision control of the existing four-dimensional chuck, especially the problem that the coarse adjustment and the fine adjustment cannot be integrated during the adjustment of the four-dimensional chuck, and the brake is used to lock after the adjustment is completed.

[0090] Disclosed are a differential thread fine-tuning four-dimensional chuck device, an assembly method and an adjustment method. The fine-tuning four-dimensional chuck device comprises a spindle connection plate, a fixed frame, a translation frame, a cover plate, a translation stage, a rotating stage, and an adjustment screw. The adjustment screw comprises a housing, a pressure cover, a differential screw, a push rod, a pin and a ball head. The four-dimensional chuck is connected to a centering lathe through a connection plate. The fixed frame is fixed to the spindle connection plate through threads. The side wall of the fixed frame has four threaded holes for installing the adjustment screws. The translation stage is limited by the adjustment screws. The translation frame is fixed to the translation stage through threads. The side wall of the translation stage has four inclined The threaded hole of the differential threaded rod is fixed to the translation stage through the threaded hole by adjusting the screw to fix the rotating stage to the translation stage, forming a four-dimensional adjustment mechanism. The outer shell is provided with an external wide pitch thread and an internal narrow pitch thread. The gland is fixed to the outer shell. The wide pitch thread on the outer shell can be driven by adjusting the inner hexagonal hole of the gland with an external hexagonal wrench. The differential threaded rod has threads with different pitches at both ends. The wide pitch thread at one end is screwed into the outer shell, and the narrow pitch thread at one end is screwed into the push rod. The push rod passes through the outer shell, and the pin passes through the outer shell to be fixed to the push rod. The ball head is embedded in the head of the push rod. The outer thread of the outer shell is connected to the fixed end of the structure, and the ball head contacts the structure to be adjusted. The present invention also provides an assembly method and an adjustment method, which solves the problem of high-precision control of the existing four-dimensional chuck.

Claims

1. A differential thread fine-tuning four-dimensional chuck device, characterized in that: The fine-tuning four-dimensional chuck device comprises a spindle connection plate (1), a fixed frame (2), a translation platform (3), a translation frame (4), a rotating platform (5), a cover plate (6) and a thread adjustment device, wherein the thread adjustment device comprises a housing (7), a pressure cover (8), a differential screw (9), a push rod (10), a pin (11) and a ball head (12); The spindle connecting plate (1) is an I-shaped structure with a hollow interior, and has threaded holes at the upper and lower parts respectively. The bottom is connected to the spindle, and the top is connected to the fixed frame (2). The top is provided with a step surface for limiting the position of the fixed frame (2). The fixing frame (2) has a threaded hole at the bottom and four inclined threaded holes on the side wall for installing adjustment screws; The translation platform (3) has a flat surface at one end and a spherical surface at the other end, which can be translated and slid by adjusting screws and pressed against the main shaft connection plate; The bottom of the translation frame (4) is provided with a threaded hole, and the side wall is provided with four inclined threaded holes for installing adjustment screws; The rotating platform (5) has a flat surface at one end and a spherical surface at the other end, and can be tilted and slid by adjusting screws, and is pressed tightly against the translation platform (3); The cover plate (6) is a square flat plate structure with rounded corners, has four through holes, and is fixed on the rotating platform (5); The shell (7) is a frame with a hollow interior, a wide pitch thread is arranged on the exterior of the shell, a narrow pitch thread and a limit pin hole are arranged on the interior, and a step is arranged on the top of the shell; The top of the gland (8) has a wide thread that matches the narrow thread inside the shell. After being screwed into the top of the shell, it rests on the step of the shell and has a hexagonal hole inside. The differential screw (9) is cylindrical in shape, with a hexagonal hole on the top for adjustment by a hexagonal wrench, a coarse pitch thread in the middle for connection with the hollow thread inside the housing, and a narrow pitch thread at the bottom for connection with the hollow thread inside the top rod; The top rod (10) is hollow inside, has a narrow pitch thread at one end, is connected to the differential screw (9), and has a bowl-shaped structure and a pin positioning circular hole structure at one end; The pin (11) is a cylindrical structure, passing through the limiting hole of the housing and connected to and fixed to the ejector rod; The ball head (12) is a spherical body, fixed on the top of the top rod, and can rotate freely 360 degrees.

2. The differential thread fine-tuning four-dimensional chuck device according to claim 1, characterized in that: The translation stage (3) is pressed against the main shaft connection plate by means of a tilt adjustment screw, and the tilt adjustment screw has two mechanical components in the transverse and longitudinal directions, one for pressing the translation stage and the other for adjusting the translation stage in the horizontal direction.

3. The differential thread fine-tuning four-dimensional chuck device according to claim 2, characterized in that: The rotating platform (5) is pressed onto the translation platform (3) via a tilt adjustment screw, and the tilt adjustment screw has two mechanical components in the horizontal and vertical directions, one for pressing the translation platform (3) and the other for adjusting the translation platform (3) in the horizontal direction.

4. The differential thread fine-tuning four-dimensional chuck device according to claim 3, characterized in that: The outer portion of the housing (7) is provided with a coarse adjustment thread, and the initial position of the four-dimensional chuck device is adjusted according to the thread feed amount.

5. The differential thread fine-tuning four-dimensional chuck device according to claim 4, characterized in that: The top of the gland (8) is provided with a hexagonal hole, which can be adjusted by a common hexagonal wrench.

6. The differential thread fine-tuning four-dimensional chuck device according to claim 5, characterized in that: The housing (7) and the differential screw (9) are connected via a wide pitch thread, and the differential screw (9) and the top rod (10) are connected via a narrow pitch thread.

7. The differential thread fine-tuning four-dimensional chuck device according to claim 6, characterized in that: The push rod (10) is connected to the pin limiting hole of the housing (7) via the pin (11), and the movement direction of the pin (11) is limited by the shape of the limiting hole.

8. The differential thread fine-tuning four-dimensional chuck device according to claim 7, characterized in that: The ball head (12) is fixed on the top of the push rod and forms rolling friction with the four-dimensional chuck device; After the thread adjustment device is roughly adjusted into place using a hexagonal screwdriver, the hexagonal screwdriver continues to go deeper and reaches the hexagonal hole of the differential screw (9), and the screwdriver push rod (10) is rotated to slide relative to the housing (7) to perform precise adjustment.

9. A method for assembling a turning optical system detection device using the differential thread fine-tuning four-dimensional chuck device of claim 8, comprising the following steps: Step 1: Grinding the flatness of the mounting surface of the structural parts Inspecting and grinding the first mounting surface of the spindle connecting plate; After the first mounting surface is initially ground, the second mounting surface is ground with the first mounting surface as the reference surface until the requirements are met; Inspecting and grinding the first mounting surface of the translation stage (3) until it meets the requirements; Step 2: Install the thread adjustment device The ball head (12) is installed in the ball bowl structure of the push rod (10), the differential screw (9) is screwed into the push rod (10) through a fine thread, the push rod (10) is embedded in the housing (7), and a pin (11) is inserted through the housing (7) and embedded in the pin hole of the push rod (10) to limit the sliding direction of the push rod (10), and the pressure cover (8) is screwed into the housing (7); Step 3: Install the translation stage Place the fixed frame (2) on the step of the spindle connection plate (1) and fix it with screws. Apply thread glue to the screws to prevent the screws from loosening. Pass the bottom of the translation platform (3) through the fixed frame (2) and place it at the center of the spindle connection plate (1). Apply thread glue to the external threads of the housing (7) and screw it into the threaded holes on the side walls of the fixed frame (2) from four directions until the ball head (12) contacts the translation platform (3). Wait for the thread glue to solidify. Step 4: Install the rotating table Place the translation frame (4) on the translation table (3) and fix it with screws. Apply thread glue to the screws to prevent the screws from loosening; pass the translation frame (4) and place the rotation table (5) on the translation table (3). The arc surface of the rotation table (5) contacts and overlaps with the arc surface of the translation table (3). Apply thread glue to the external threads of the housing (7) and screw them into the threaded holes on the side walls of the translation frame (4) from four directions until the ball head (12) is on the rotation table (5) and the thread glue is cured; fix the cover plate (6) to the translation frame (4).

10. An adjustment method applied to the differential thread fine-tuning four-dimensional chuck device of claim 8, characterized in that: The steps include: Step 1: Rough adjustment of the horizontal adjustment of the four-dimensional chuck device First, install the adjustment screw into the inclined threaded hole on the fixed frame and the translation frame using a common hexagonal wrench. At this time, the ball head of the threaded adjustment device contacts the translation stage for coarse adjustment. Step 2: Fine-tune the horizontal adjustment of the four-dimensional chuck device After the coarse adjustment is in place, the hexagonal screwdriver continues to go deeper and reaches the hexagonal hole of the differential screw; at this time, the rotating screwdriver push rod will slide relative to the housing, and the ball head will change the sliding friction between the adjustment screw and the translation stage and rotation stage into rolling friction, making the adjustment smoother; the pin slides back and forth in the notch of the housing to prevent the push rod from rotating, thereby changing the rotational motion of the screw into the translational motion of the push rod.

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