CCD edge searching mechanism base compatible with 8 inches and 12 inches

Abstract

The invention discloses a CCD (charge coupled device) edge searching mechanism base compatible with 8 inches and 12 inches, which relates to the related field of positioning edge searching technology and structurally comprises a bottom plate, a support plate slidably connected to the upper end of the bottom plate, a first sliding groove formed in the upper end face of the support plate and second sliding grooves formed in the left side and the right side of the upper end face of the bottom plate. Pressure is applied to the circular plate through the gravity of the wafer, the clamping plate is driven to make contact with the arc plate to push the arc plate to move, the small circular plate is relatively driven to move on the inner side of the reserved opening, the wafer is blocked at the reserved opening in the circular plate, the wafer can also be adsorbed to the circular plate through the air pressure difference of the inner side of the reserved opening, and deviation is prevented during positioning; when the positioning holes with different sizes need to be switched, the round plate is held by the right hand, the rotating ring is held by the left hand to drive the rotating ring to rotate, the 8-inch positioning ring is driven to form a plurality of arc plates to be split or spliced, the size of the positioning opening can also be rapidly changed, and use is more convenient.

Description

Technical Field

[0001] The invention relates to the field related to positioning and edge-finding technology, and in particular to a CCD edge-finding mechanism base compatible with 8-inch and 12-inch devices. Background Art

[0002] Canon 5500 Series 812PA Compatible Mechanism refers to compatible devices developed for Canon 5500 Series cameras and 812 recorders. Such devices usually integrate professional audio recording functions into a camera body, allowing photographers to easily record audio materials during shooting. By developing such compatible mechanisms, users can make full use of the high-quality imaging functions of Canon 5500 Series cameras without purchasing additional professional recording equipment.

[0003] As one of the most important components in the camera, the charge coupled device (CCD) is not compatible with the single 8-inch and 12-inch CCD edge-finding mechanisms in the existing technical equipment during its processing. If switching between 8 and 12 is required during the production process, a lot of hardware replacement and operation time are required to realize the edge-finding function of different sizes. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a CCD edge-finding mechanism base that is compatible with 8 inches and 12 inches.

[0005] The present invention is implemented in this way: a CCD edge-finding mechanism base compatible with 8-inch and 12-inch structures is constructed, the device comprises a bottom plate, a support plate fixedly connected to the upper end surface of the bottom plate, and a reserved notch is provided on the support plate, a placement plate fixedly connected to the inner side of the reserved notch on the support plate, an inclined plate fixedly connected to the left and right sides of the upper end surface of the placement plate, a right-angle fixing plate slidably connected to the left and right sides of the inclined plates on the upper end surface of the placement plate, and a first limiting column fixedly connected to the upper end surface of the right-angle fixing plate;

[0006] Also includes:

[0007] An electric push rod is fixedly connected to the rear side of the upper end surface of the placement plate;

[0008] A long board, wherein the output end of the electric push rod is fixedly connected to the long board through a short board, and sliding grooves are provided at the left and right ends of the long board, and the limit column passes through the sliding grooves provided on the long board and is slidably connected to the long board;

[0009] Scanning camera: the front end surface of the right-angle fixing plate is fixedly connected with two upper and lower scanning cameras via a C-shaped plate.

[0010] Preferably, the bottom plate comprises:

[0011] A placement opening, a placement opening is provided at the center of the upper end surface of the bottom plate;

[0012] An internal fixing column, the center of the inner bottom end surface of the placement opening is fixedly connected with the internal fixing column;

[0013] A column, wherein the placement port is inserted and connected with the column;

[0014] A circular plate, the upper end surface of the cylinder is fixedly connected with a circular plate;

[0015] A swivel is rotatably connected to the outer side of the circular plate.

[0016] Preferably, the base plate further comprises:

[0017] A reserved opening is provided in the center of the upper end surface of the cylinder and the circular plate, and the cylinder and the circular plate are connected to each other;

[0018] Positioning holes, the circular plate is provided with a plurality of positioning holes;

[0019] A toothed plate is inserted and slidably connected to the left end surface of the outer side of the cylinder;

[0020] A limit plate, the left end surface of the outer side of the column is inserted into and slidably connected to the limit plate;

[0021] The arc plate is used for fixing the outer tooth plate of the column and the end of the limit plate away from the column through the arc plate.

[0022] Preferably, the bottom plate further includes

[0023] A gear, wherein the inner side of the cylinder is rotatably connected with a gear;

[0024] A screw rod, the upper end surface of the gear is fixedly connected with the screw rod;

[0025] A small circular plate is threadedly connected to the screw rod, and the small circular plate is located at the reserved opening and is slidably connected to the inner side of the reserved opening.

[0026] Tooth groove, the upper end surface of the rotating ring is provided with a tooth groove;

[0027] A pinion gear is meshedly connected to the tooth groove.

[0028] Preferably, the base plate further comprises:

[0029] A worm, wherein the pinion is fixedly connected with the worm;

[0030] A worm wheel, wherein the lower end of the worm is meshingly connected with the worm wheel;

[0031] A 12-inch positioning ring, through which the second worm gear is rotatably connected;

[0032] Small connecting plates, two small connecting plates are rotatably connected to the left and right sides of the second worm gear through connecting columns;

[0033] 8-inch positioning ring, the end of the small connecting plate away from the second worm gear is rotatably connected with the 8-inch positioning ring, and the 8-inch positioning ring is composed of a plurality of arc plates spliced ​​together.

[0034] Preferably, the base plate further comprises:

[0035] Fixed columns, the 12-inch positioning ring is rotatably connected with a plurality of fixed columns, and the fixed columns and the second worm gear are symmetrically arranged;

[0036] A short column is inserted and slidably connected to the center of the upper end surface of the inner fixing column;

[0037] A semicircular clamping protrusion, the outer side surface of the short column is fixedly connected with a semicircular clamping protrusion;

[0038] Spring, the lower end surface of the short column is fixedly connected with a spring.

[0039] Preferably, the base plate further comprises:

[0040] The column cylinder is rotatably connected to the inner fixed column, and the short column is inserted into the column cylinder and is slidably connected to the column cylinder;

[0041] Inner arc groove, the inner side wall of the column is provided with an inner arc groove, and the semicircular clamping protrusion is located inside the inner arc groove and is slidably connected to the inner arc groove;

[0042] A round bottom plate is rotatably connected inside the inner fixing column.

[0043] Preferably, the base plate further comprises:

[0044] Arc grooves, the circular bottom plate is provided with a plurality of arc grooves;

[0045] A limiting column, the inner side of the arc groove is slidably connected to the limiting column;

[0046] A connecting plate, the lower end surface of the limiting column is fixedly connected with the connecting plate, and the connecting plate is inserted into the outer side surface of the inner fixing column and is slidably connected with the inner fixing column;

[0047] A clamping plate is fixedly connected to one end of the long plate away from the limiting column.

[0048] The present invention has the following advantages: The present invention provides a CCD edge-finding mechanism base compatible with 8-inch and 12-inch devices through improvement, and has the following improvements compared with the same type of devices:

[0049] The CCD edge-finding mechanism base compatible with 8-inch and 12-inch wafers of the present invention, when the wafer is placed on the circular plate, applies pressure to the circular plate through the wafer's own gravity, so that its column moves downward and drives the short column to move, while driving the column tube to rotate, driving the circular bottom plate to drive the limiting column through the arc groove, while pulling the connecting plate and driving the clamping plate to contact the arc plate, and pushing the arc plate to move, and relatively driving the small circular plate to move inside the reserved opening. Since the wafer is blocked at the reserved opening on the circular plate, the wafer can be adsorbed on the circular plate through the air pressure difference inside the reserved opening to prevent deviation during positioning, and when it is necessary to switch between positioning holes of different sizes, the right hand holds the circular plate and the left hand holds the swivel to drive the swivel to rotate, driving the 8-inch positioning ring into multiple arc plates for splitting or splicing, and the positioning opening size can also be quickly changed, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a three-dimensional schematic diagram of the structure of the present invention;

[0051] Figure 2 It is a schematic diagram of a structural placement plate of the present invention;

[0052] Figure 3 It is a schematic diagram of the connection of the structural columns of the present invention;

[0053] Figure 4 is a top view of the structural column of the present invention;

[0054] Figure 5 The present invention Figure 3 A magnified schematic diagram of structure A;

[0055] Figure 6 It is a schematic diagram of the connection and splitting of the structural column of the present invention.

[0056] Among them: bottom plate-1, support plate-2, placement plate-3, inclined plate-4, right-angle fixing plate-5, first limiting column-6, electric push rod-7, long plate-8, scanning camera-9, placement opening-10, internal fixing column-101, column-11, round plate-12, swivel-13, reserved opening-14, positioning hole-15, tooth plate-16, limiting plate-17, arc plate-170, gear-171, screw-17 2. Small round plate 173, tooth groove 18, small gear 19, worm 20, worm wheel 21, 12-inch positioning ring 22, small connecting plate 23, 8-inch positioning ring 24, fixing column 25, short column 26, semicircular cam 260, spring 27, column 28, inner arc groove 29, round bottom plate 30, arc groove 31, limiting column 32, connecting plate 33, splint 34. DETAILED DESCRIPTION

[0057] The following is combined with Figures 1 to 6The principles and features of the present invention are described, and the examples are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0058] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0060] Embodiment 1:

[0061] See also Figures 1 to 6 The present invention is compatible with 8-inch and 12-inch CCD edge-finding mechanism base, including a bottom plate 1, a support plate 2 fixedly connected to the upper end surface of the bottom plate 1, and a reserved notch is provided on the support plate 2, a placement plate 3 fixedly connected to the inner side of the reserved notch on the support plate 2, an inclined plate 4 fixedly connected to the left and right sides of the upper end surface of the placement plate 3, a right-angle fixed plate 5 slidably connected to the inclined plates 4 on the left and right sides of the upper end surface of the placement plate 3, a first limiting column 6 fixedly connected to the upper end surface of the right-angle fixed plate 5, an electric push rod 7 is fixedly connected to the rear side of the upper end surface of the placement plate 3, the output end of the electric push rod 7 is fixedly connected to a long plate 8 through a short plate, and a slide groove is provided on the left and right ends of the long plate 8, the limiting column 6 passes through the slide groove provided on the long plate 8 and is slidably connected to the long plate 8, and the front end surface of the right-angle fixed plate 5 is fixedly connected to two upper and lower scanning cameras 9 through a C-shaped plate. The center of the upper end surface of the bottom plate 1 is provided with a placement opening 10, and the center of the bottom end surface inside the placement opening 10 is fixedly connected to an internal fixing column 101.

[0062] The placement port 10 is inserted and connected with a cylinder 11, a circular plate 12 is fixedly connected to the upper end face of the cylinder 11, a swivel 13 is rotatably connected to the outer side of the circular plate 12, a reserved port 14 is provided in the center of the upper end face of the cylinder 11 and the circular plate 12, and the cylinder 11 and the circular plate 12 are mutually connected, and a plurality of positioning holes 15 are provided on the circular plate 12, a tooth plate 16 is inserted and slidably connected to the outer left end face of the cylinder 11, and a limit plate 17 is inserted and slidably connected to the outer left end face of the cylinder 11, and two tooth plates 16 and limit plates 17 are provided, and each tooth plate 16 and limit plate 17 are set as a group, and the tooth plates 16 and limit plates 17 between different groups are inserted and slidably connected to each other, and the tooth plates 16 and the limit plate 17 are inserted into the sliding connection with a spring for reset, the outer toothed plate 16 of the column 11 and the limit plate 17 are fixedly connected to each other through an arc plate 170 at one end away from the column 11, and a gear 171 is rotatably connected to the inner side of the column 11, and the gear 171 is located inside the reserved opening 14 and can rotate, the gear 171 and the toothed plate 16 are meshed and connected with each other, and a screw rod 172 is fixedly connected to the upper end face of the gear 171, a small circular plate 173 is threadedly connected to the screw rod 172, and the small circular plate 173 is located at the reserved opening 14 and is slidably connected to the inner side of the reserved opening 14, and a tooth groove 18 is provided on the upper end face of the swivel 13.

[0063] A pinion 19 is meshedly connected to the tooth groove 18, a worm 20 is fixedly connected to the pinion 19, a worm wheel 21 is meshedly connected to the lower end of the worm 20, a 12-inch positioning ring 22 is rotatably connected to the second worm wheel 21, two small connecting plates 23 are rotatably connected to the left and right sides of the second worm wheel 21 through connecting columns, an 8-inch positioning ring 24 is rotatably connected to the end of the small connecting plate 23 away from the second worm wheel 21, and the 8-inch positioning ring 24 is composed of a plurality of arc plates spliced ​​together, a plurality of fixed columns 25 are rotatably connected to the 12-inch positioning ring 22, and the fixed columns 25 and the second worm wheel 21 are symmetrically arranged, a short column 26 is inserted and slidably connected to the center of the upper end surface of the inner fixed column 101, and the lower end surface of the column 11 and the upper end surface of the short column 26 are placed in contact with each other, a semicircular convex 260 is fixedly connected to the outer side surface of the short column 26, and a spring 27 is fixedly connected to the lower end surface of the short column 26.

[0064] A column tube 28 is rotatably connected inside the internal fixed column 101, and the short column 26 is inserted into the column tube 28 and slidably connected with the column tube 28. An inner arc groove 29 is provided on the inner side wall of the column tube 28, and the semicircular clamping protrusion 260 is located on the inner side of the inner arc groove 29 and is slidably connected with the inner arc groove 29. A circular bottom plate 30 is rotatably connected inside the internal fixed column 101, and the center of the upper end surface of the circular bottom plate 30 is fixedly connected to the center of the bottom end surface of the column tube 28 through a connecting column. A plurality of arc grooves 31 are provided on the circular bottom plate 30, and a limiting column 32 is slidably connected to the inner side of the arc groove 31. A connecting plate 33 is fixedly connected to the lower end surface of the limiting column 32, and the connecting plate 33 is inserted into the outer side surface of the internal fixed column 101 and is slidably connected with the internal fixed column 101. A splint 34 is fixedly connected to the end of the long plate 33 away from the limiting column 32.

[0065] The working principle of the 8-inch and 12-inch CCD edge-finding mechanism base compatible with Example 1 is as follows:

[0066] First, when the wafer needs to be edge-finding on the CCD, the wafer is placed at the center of the upper end surface of the circular plate 12, and the lower end surface of the wafer is fitted with the upper end surface of the circular plate 12. The circular plate 12 is pressed downward by the wafer's own gravity, and the cylinder 11 is driven to move downward by the circular plate 12. At the same time, the cylinder 11 moves downward to press the short column 26, driving the short column 26 to move, and the spring 27 is squeezed by force;

[0067] Second, the short column 26 moves downward to drive the semicircular clamping protrusion 260 to slide inside the inner arc groove 29, and at the same time drives the column tube 28 to rotate, and at the same time drives the circular bottom plate 30 to rotate, and drives the limiting column 32 to pull the long plate 33 to move through the arc groove 31, and drives the clamping plate 34 to clamp the outer side of the column body 11. Synchronously, when the clamping plate 34 clamps the outer side of the column body 11, it will first contact the arc plate 170, and at the same time push the arc plate 170 to drive the toothed plate 16 and the limiting plate 17 to move toward the inside of the column 11, and drive the gear 171 through the toothed plate 16 to synchronously drive the small circular plate 173 to slide inside the reserved opening 14 through the screw 172. Since the wafer is placed at the reserved opening 14 on the upper end surface of the circular plate 12, the reserved opening 14 is blocked, and the wafer can be adsorbed on the upper end of the circular plate 12 by the air pressure difference;

[0068] Third, the electric push rod 7 is then turned on to push the long plate 8 to move through the short plate, driving the sliding grooves on the left and right ends of the long plate 8, and synchronously driving the first limit column 6 to drive the right-angle fixed plate 5 to slide on the inclined plate 4, driving the scanning camera 9 to move to the positioning hole 15 on the circular plate 12, and then turning on the scanning camera 9 to scan and locate;

[0069] Fourth, when the positioning hole needs to be replaced, the circular plate 12 is held by the right hand, and the swivel 13 is held by the left hand to drive the swivel 13 to rotate, and the pinion 19 is driven by the tooth groove 18 to drive the second worm gear 21 to rotate through the second worm 20, and the small connecting plate 23 is driven to move downward, and the 8-inch positioning ring 24 is driven to move, so that the 8-inch positioning ring 24 is relatively split into multiple arc plates, and the 12-inch positioning ring 22 is exposed at the same time. On the contrary, only the swivel 13 needs to be rotated in the opposite direction, and the small connecting plate 23 is synchronously driven to drive multiple arc plates to splice into an 8-inch positioning ring 24, so that quick switching can be achieved without disassembling the equipment, which is more convenient to use.

[0070] The present invention provides an improved CCD edge-finding mechanism base compatible with 8-inch and 12-inch devices. When a wafer is placed on the circular plate 12, the wafer's own gravity exerts pressure on the circular plate 12, so that the column 11 moves downward to drive the short column 26 to move, and drives the column tube 28 to rotate, while driving the circular bottom plate 30 to drive the limit column 32 through the arc groove 31, and at the same time pulls the connecting plate 33 and drives the clamping plate 34 to contact the arc plate 170, and at the same time pushes the arc plate 170 to move, and relatively drives the small circular plate 173 to move in the reserved space. The wafer is blocked at the reserved opening 14 on the circular plate 12 by the air pressure difference inside the reserved opening 14, so that the wafer can be adsorbed on the circular plate 12 to prevent displacement during positioning. When it is necessary to switch between positioning holes of different sizes, the right hand holds the circular plate 12 while the left hand holds the swivel 13 to drive the swivel 13 to rotate, thereby driving the 8-inch positioning ring 24 to be split or spliced ​​into multiple arc plates. The size of the positioning opening can also be quickly changed, which is more convenient to use.

[0071] The above shows and describes the basic principle, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0072] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A CCD edge-finding mechanism base compatible with 8-inch and 12-inch devices, comprising a base plate (1), a support plate (2) fixedly connected to the upper end surface of the base plate (1), wherein the support plate (2) is provided with a reserved notch, a placement plate (3) fixedly connected to the inner side of the reserved notch on the support plate (2), an inclined plate (4) fixedly connected to the left and right sides of the upper end surface of the placement plate (3), a right-angle fixing plate (5) slidably connected to the inclined plates (4) on the left and right sides of the upper end surface of the placement plate (3), and a first limiting column (6) fixedly connected to the upper end surface of the right-angle fixing plate (5); Features: Also includes: An electric push rod (7), the rear side of the upper end surface of the placement plate (3) being fixedly connected with the electric push rod (7); A long plate (8), wherein the output end of the electric push rod (7) is fixedly connected to the long plate (8) via a short plate, and sliding grooves are provided at the left and right ends of the long plate (8), and the limiting column (6) passes through the sliding grooves provided on the long plate (8) and is slidably connected to the long plate (8); A scanning camera (9), wherein the front end surface of the right-angle fixing plate (5) is fixedly connected to two upper and lower scanning cameras (9) via a C-shaped plate.

2. The CCD edge-finding mechanism base compatible with 8-inch and 12-inch devices according to claim 1, characterized in that: The bottom plate (1) comprises: A placement opening (10), wherein the center of the upper end surface of the bottom plate (1) is provided with a placement opening (10); An internal fixing column (101), the internal fixing column (101) being fixedly connected to the center of the inner bottom end surface of the placement opening (10); A column (11), wherein the placement opening (10) is inserted and connected with the column (11); A circular plate (12), the upper end surface of the column (11) being fixedly connected with the circular plate (12); A swivel (13), the outer side surface of the circular plate (12) is rotatably connected with the swivel (13).

3. The CCD edge-finding mechanism base compatible with 8-inch and 12-inch devices according to claim 2, characterized in that: The bottom plate (1) further comprises: A reserved opening (14), wherein the column (11) and the circular plate (12) are connected to each other through a reserved opening (14) provided at the center of the upper end surface; Positioning holes (15), the circular plate (12) is provided with a plurality of positioning holes (15); A toothed plate (16), the outer left end surface of the column (11) is inserted and slidably connected with the toothed plate (16); A limit plate (17), the outer left end surface of the column (11) is inserted into and slidably connected with the limit plate (17); The arc plate (170) is a fixed connection between the outer tooth plate (16) of the column (11) and the end of the limit plate (17) away from the column (11).

4. The CCD edge-finding mechanism base compatible with 8-inch and 12-inch devices according to claim 3, characterized in that: The bottom plate (1) further comprises: A gear (171), the inner side of the column (11) is rotatably connected with the gear (171); A screw rod (172), the upper end surface of the gear (171) being fixedly connected with the screw rod (172); A small circular plate (173) is threadedly connected to the screw rod (172), and the small circular plate (173) is located at the reserved opening (14) and is slidably connected to the inner side of the reserved opening (14). A tooth groove (18), wherein the upper end surface of the rotating ring (13) is provided with a tooth groove (18); A small gear (19) is meshingly connected to the tooth groove (18).

5. The CCD edge-finding mechanism base compatible with 8-inch and 12-inch devices according to claim 4, characterized in that: The bottom plate (1) further comprises: A worm (20), the pinion (19) being fixedly connected with the worm (20); A worm wheel (21), the lower end of the worm (20) is meshingly connected with the worm wheel (21); A 12-inch positioning ring (22), the second worm gear (21) is rotatably connected with a 12-inch positioning ring (22); Small connecting plates (23), two small connecting plates (23) are rotatably connected to the left and right sides of the second worm gear (21) via connecting columns; An 8-inch positioning ring (24), wherein one end of the small connecting plate (23) away from the second worm gear (21) is rotatably connected to the 8-inch positioning ring (24), and the 8-inch positioning ring (24) is composed of a plurality of arc plates spliced ​​together.

6. The CCD edge-finding mechanism base compatible with 8-inch and 12-inch devices according to claim 5, characterized in that: The bottom plate (1) further comprises: Fixed columns (25), the 12-inch positioning ring (22) is rotatably connected with a plurality of fixed columns (25), and the fixed columns (25) and the second worm gear (21) are symmetrically arranged with each other; A short column (26), the center of the upper end surface of the inner fixing column (101) is inserted and slidably connected with the short column (26); A semicircular clamping protrusion (260), the outer side surface of the short column (26) is fixedly connected with the semicircular clamping protrusion (260); A spring (27), the lower end surface of the short column (26) is fixedly connected with the spring (27).

7. The 8-inch and 12-inch compatible CCD edge-finding mechanism base according to claim 6, characterized in that: The bottom plate (1) further comprises: The column cylinder (28), the inner fixed column (101) is rotatably connected with the column cylinder (28), and the short column (26) is inserted into the column cylinder (28) and is slidably connected with the column cylinder (28); An inner arc groove (29), wherein the inner side wall of the column tube (28) is provided with an inner arc groove (29), and a semicircular clamping protrusion (260) is located inside the inner arc groove (29) and is slidably connected to the inner arc groove (29); A round bottom plate (30) is rotatably connected inside the inner fixing column (101).

8. The CCD edge-finding mechanism base compatible with 8-inch and 12-inch devices according to claim 76, characterized in that: The bottom plate (1) further comprises: Arc grooves (31), the circular bottom plate (30) is provided with a plurality of arc grooves (31); A limiting post (32), the inner side of the arc groove (31) is slidably connected to the limiting post (32); A connecting plate (33), wherein the lower end surface of the limiting column (32) is fixedly connected with the connecting plate (33), and the connecting plate (33) is inserted into the outer side surface of the inner fixing column (101) and is slidably connected with the inner fixing column (101); A clamping plate (34), wherein one end of the long plate (33) away from the limiting column (32) is fixedly connected with the clamping plate (34).

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