A multi-directional self-adaptive floating fixing support clamp for a split machine case and a method of using the same

Abstract

The application discloses a kind of to open machine box multidirectional self-adapting floating fixed support clamp and its using method, including bottom plate, Z direction floating circumferential fixed clamping mechanism is provided on the bottom plate, Z direction fixed circumferential floating clamping mechanism and Z direction floating circumferential floating clamping mechanism;Z direction floating circumferential fixed clamping mechanism, Z direction fixed circumferential floating clamping mechanism and Z direction floating circumferential floating clamping mechanism between each other cooperate multidirectional self-adapting support clamping open machine box piece, Z direction floating circumferential fixed clamping mechanism, Z direction fixed circumferential floating clamping mechanism and Z direction floating circumferential floating clamping mechanism in the application each other cooperate multidirectional self-adapting support clamping open machine box piece, can realize Z direction and circumferential floating support, while supporting ball can be self-adapting to the shape of open machine box piece, avoid excessive clamping stress generation, make open machine box piece in clamping state and free state consistent, avoid open machine box piece deformation.

Description

Technical Field

[0001] This invention belongs to the technical field of split-type casing support fixtures, specifically relating to a multi-directional adaptive floating fixed support fixture for split-type casings and its usage method. Background Technology

[0002] The compressor of an aero-engine contains rotor and stator blades arranged at intervals along the axial direction. The external casing stator often adopts a split structure. The split casing is a semi-annular structure with an angle of 180°. They are assembled in pairs, and the joint must be sealed. In order to ensure that the rotor and stator blades are arranged at intervals along the axial direction, the corresponding stator blades are pre-installed inside the split casing before assembly. During assembly, the split casing must be pushed into the assembly position from a path perpendicular to the engine axis in order to achieve the requirement of the rotor and stator being arranged at intervals.

[0003] Existing jigs for machining the shape of split-shell casings typically consist of a base plate and a pressure plate. Their main working principle involves placing the split-shell casing parts on the base plate, pre-pressing the split-shell casing, aligning the split-shell casing, and then pressing the pressure plate. However, existing jigs for machining the shape of split-shell casings have the following problems and drawbacks: 1. Clamping stress exists, and the split casing is severely deformed after machining. The existing structure simply clamps the end face during clamping, and the pressure plate is consistent throughout the entire circumference, which over-constrains the split casing and generates clamping stress. The deformation of the split casing in the constrained and free states is not considered, resulting in severe deformation of the split casing after the pressure plate is removed after machining. 2. Cannot achieve circumferential and Z-axis floating support - The existing tooling structure is simple and can only perform end face clamping, but cannot achieve circumferential and Z-axis floating support; Therefore, we propose a multi-directional adaptive floating fixed support fixture for the split-type casing and its usage method. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-directional adaptive floating fixed support fixture for a split-type casing and its usage method, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-directional adaptive floating fixed support clamp for a split-type casing, comprising a base plate, wherein the base plate is provided with a Z-direction floating circumferential fixed clamping mechanism, a Z-direction fixed circumferential floating clamping mechanism and a Z-direction floating circumferential floating clamping mechanism; The Z-axis floating circumferential fixed clamping mechanism, the Z-axis fixed circumferential floating clamping mechanism, and the Z-axis floating circumferential floating clamping mechanism cooperate with each other to provide multi-directional adaptive support and clamping for the split-type housing components; The Z-axis floating circumferential fixing clamping mechanism is used to perform Z-axis floating and circumferential fixing clamping on the split-type casing. The Z-axis fixed circumferential floating clamping mechanism is used to fix the split-type casing in the Z-axis and perform circumferential floating clamping. The Z-axis floating and circumferential floating clamping mechanism is used to perform Z-axis floating and circumferential floating clamping on the split-type casing.

[0006] Preferably, there are two Z-axis floating circumferential fixing clamping mechanisms, which are symmetrically arranged on the base plate.

[0007] Preferably, the Z-axis floating circumferential fixing clamping mechanism includes a first base, a first upper pressure plate, a first lower pressure plate, a first clamping bolt, a first upper support nail, a first lower support nail, a first support block, a first adjusting bolt, a first spring, and a first crossbar; Both the first upper pressure plate and the first lower pressure plate are mounted on the first base by pins. The first upper pressure plate and the first lower pressure plate are connected by the first clamping bolt. The first upper support nail and the first lower support nail are respectively mounted on the outer ends of the first upper pressure plate and the first lower pressure plate by the first locking nut. A clamping space is formed between the first upper support nail and the first lower support nail. The first support block is disposed on the first clamping bolt between the first upper pressure plate and the first lower pressure plate. The first adjusting bolt is disposed on the first support block and connected to the first lower pressure plate through the first crossbar. The first spring is sleeved on the first adjusting bolt between the first support block and the first lower pressure plate. Support balls are provided at the opposite ends of the first upper support nail and the first lower support nail.

[0008] Preferably, four Z-axis fixed circumferential floating clamping mechanisms are provided, and each of the four Z-axis fixed circumferential floating clamping mechanisms is divided into two groups, with the two groups of Z-axis fixed circumferential floating clamping mechanisms symmetrically distributed in a ring on the base plate. Furthermore, the two sets of Z-axis fixed circumferential floating clamping mechanisms and the two Z-axis floating circumferential fixed clamping mechanisms are arranged in a cross shape on the base plate.

[0009] Preferably, the Z-axis fixed circumferential floating clamping mechanism includes a second base, a second upper pressure plate, a second clamping bolt, a second upper support pin, a second lower support pin, a first adjusting block, and a first sliding block; The second upper pressure plate is mounted on the second base via a pin. A second clamping bolt is provided between the second upper pressure plate and the second base. The second upper support pin is mounted on the outer end of the second upper pressure plate via a second locking nut. The second lower support pin is mounted on the second base at the position corresponding to the second upper support pin. A clamping space is formed between the second upper support pin and the second lower support pin. The first sliding block is disposed between the second upper pressure plate and the second base. The second base is threaded with the first adjusting block that is sleeved with the first sliding block. The clamping space between the first sliding block and the second upper support pin and the second lower support pin is aligned. The opposing ends of the second upper support pin and the second lower support pin are each provided with a support ball.

[0010] Preferably, there are eight Z-axis floating circumferential floating clamping mechanisms. Each of the eight Z-axis floating circumferential floating clamping mechanisms is divided into four groups. The four groups of Z-axis floating circumferential floating clamping mechanisms are arranged in a ring between the Z-axis floating circumferential fixed clamping mechanism and the Z-axis fixed circumferential floating clamping mechanism on the base plate.

[0011] Preferably, the Z-axis floating circumferential floating clamping mechanism includes a third base, a third upper pressure plate, a third lower pressure plate, a third clamping bolt, a third upper support nail, a third lower support nail, a second adjusting block, and a second sliding block; The third upper pressure plate and the third lower pressure plate are both mounted on the third base via pins. The third clamping bolt is threaded between the third upper pressure plate and the third lower pressure plate. The third upper support nail and the third lower support nail are respectively mounted at the outer ends of the third upper pressure plate and the third lower pressure plate via third locking nuts. A clamping space is formed between the third upper support nail and the third lower support nail. The second sliding block is disposed between the third upper pressure plate and the third lower pressure plate, and the second sliding block is aligned with the clamping space between the third upper support nail and the third lower support nail. The third base is threadedly connected with the second adjusting block that is sleeved with the second sliding block. Support balls are provided at the opposite ends of the third upper support nail and the third lower support nail.

[0012] A method for using a multi-directional adaptive floating fixed support fixture for a split-type casing includes the following steps: A: During clamping, place the split-type casing on the fixture. First, use the Z-direction fixed circumferential floating clamping mechanism to pre-press the split-type casing, thus determining the Z-direction orientation. At this time, the lower inner edge of the split-type casing is placed between the second upper support pin and the second lower support pin. Since the second lower support pin is fixedly set on the second base, the Z-direction orientation of the split-type casing can be fixed between the second upper support pin and the second lower support pin. During this process, the first adjusting bolt, the first spring, and the first crossbar drive the first lower pressure plate to float according to the Z-direction orientation of the split-type casing to ensure that the split-type casing is in a free clamping state in the Z-direction. B: Then, the Z-axis fixed circumferential floating clamping mechanism is used to pre-press the split-type casing, that is, to determine the circumferential orientation of the split-type casing. At this time, the position of the first adjusting block on the second base is adjusted so that the first adjusting block drives the first sliding block to abut against the split-type casing, thereby determining the circumferential orientation of the split-type casing. During this process, the first support block is fixed to the first upper pressure plate and the first lower pressure plate, which can further determine the circumferential orientation of the split-type casing. C: Finally, the Z-axis floating circumferential floating clamping mechanism is used to press the split housing component. During this process, the distance between the third upper pressure plate and the third lower pressure plate is adjusted by adjusting the third clamping bolt, so that the third upper support nail and the third lower support nail press the split housing component. Then, the position of the second adjusting block on the third base is adjusted so that the second adjusting block drives the second sliding block to abut against the split housing component, thus completing the overall clamping of the split housing component.

[0013] Preferably, when the first upper support pin and the first lower support pin, the second upper support pin and the second lower support pin, and the third upper support pin and the third lower support pin clamp the split-type casing, the support ball rotates freely according to the shape of the split-type casing to achieve adaptive clamping.

[0014] Compared with the prior art, the beneficial effects of the present invention are: In this invention, the Z-axis floating circumferential fixed clamping mechanism, the Z-axis fixed circumferential floating clamping mechanism, and the Z-axis floating circumferential floating clamping mechanism cooperate with each other to provide multi-directional adaptive support and clamping for the split housing component. This enables Z-axis and circumferential floating support, while the support ball can adapt to the shape of the split housing component, avoiding excessive clamping stress and ensuring that the split housing component is consistent in both the clamped and free states, thus preventing deformation of the split housing component. Attached Figure Description

[0015] Figure 1 This is a top view of the structure of the present invention; Figure 2 This is a cross-sectional schematic diagram of the Z-axis floating circumferential fixing clamping mechanism of the present invention; Figure 3 This is a cross-sectional schematic diagram of the Z-axis fixed circumferential floating clamping mechanism of the present invention; Figure 4 This is a cross-sectional schematic diagram of the Z-axis floating circumferential floating clamping mechanism of the present invention; Figure 5 This is a schematic front sectional view of the present invention.

[0016] In the diagram: 1. Base plate; 2. Z-axis floating circumferential fixed clamping mechanism; 201. First base; 202. First upper pressure plate; 203. First lower pressure plate; 204. First clamping bolt; 205. First upper support pin; 206. First lower support pin; 207. First support block; 208. First adjusting bolt; 209. First spring; 210. First crossbar; 211. First locking nut; 212. Support ball; 3. Z-axis fixed circumferential floating clamping mechanism; 301. Second base; 302. Second upper pressure plate; 3 03. Second clamping bolt; 304. Second upper support pin; 305. Second lower support pin; 306. First adjusting block; 307. First sliding block; 308. Second locking nut; 4. Z-axis floating circumferential floating clamping mechanism; 401. Third base; 402. Third upper pressure plate; 403. Third lower pressure plate; 404. Third clamping bolt; 405. Third upper support pin; 406. Third lower support pin; 407. Second adjusting block; 408. Second sliding block; 409. Third locking nut; 5. Split-type casing. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-5 The present invention provides a multi-directional adaptive floating fixed support fixture for a split-type casing, including a base plate 1, on which a Z-direction floating circumferential fixed clamping mechanism 2, a Z-direction fixed circumferential floating clamping mechanism 3 and a Z-direction floating circumferential floating clamping mechanism 4 are provided. The Z-direction floating circumferential fixed clamping mechanism 2, the Z-direction fixed circumferential floating clamping mechanism 3, and the Z-direction floating circumferential floating clamping mechanism 4 cooperate with each other to provide multi-directional adaptive support and clamping for the split-type housing 5; Z-axis floating circumferential fixing clamping mechanism 2 is used to perform Z-axis floating and circumferential fixing clamping on the split-type casing 5. Two Z-axis floating circumferential fixing clamping mechanisms 2 are provided, and the two Z-axis floating circumferential fixing clamping mechanisms 2 are symmetrically arranged on the base plate 1. The Z-axis floating circumferential fixing clamping mechanism 2 includes a first base 201, a first upper pressure plate 202, a first lower pressure plate 203, a first clamping bolt 204, a first upper support pin 205, a first lower support pin 206, a first support block 207, a first adjusting bolt 208, a first spring 209, and a first crossbar 210. The first upper pressure plate 202 and the first lower pressure plate 203 are both set on the first base 201 by pins, and the first upper pressure plate 202 and the first lower pressure plate 203 are connected by the first clamping bolt 204. The connection is as follows: the first upper support nail 205 and the first lower support nail 206 are respectively set at the outer ends of the first upper pressure plate 202 and the first lower pressure plate 203 through the first locking nut 211, forming a clamping space between the first upper support nail 205 and the first lower support nail 206; the first support block 207 is set on the first clamping bolt 204 between the first upper pressure plate 202 and the first lower pressure plate 203, the first adjusting bolt 208 is set on the first support block 207 and connected to the first lower pressure plate 203 through the first crossbar 210, and the first spring 209 is sleeved on the first adjusting bolt 208 between the first support block 207 and the first lower pressure plate 203; the opposite ends of the first upper support nail 205 and the first lower support nail 206 are each provided with a support ball 212; Z-axis fixed circumferential floating clamping mechanism 3 is used to fix and circumferentially float the split-type casing 5 in the Z-axis direction. Four Z-axis fixed circumferential floating clamping mechanisms 3 are provided, each divided into two groups. The two groups of Z-axis fixed circumferential floating clamping mechanisms 3 are symmetrically distributed in a ring on the base plate 1. Furthermore, the two groups of Z-axis fixed circumferential floating clamping mechanisms 3 and the two Z-axis floating circumferential fixed clamping mechanisms 2 are arranged in a cross shape on the base plate 1. Each Z-axis fixed circumferential floating clamping mechanism 3 includes a second base 301, a second upper pressure plate 302, a second clamping bolt 303, a second upper support pin 304, a second lower support pin 305, a first adjusting block 306, and a first sliding block 307. The second upper pressure plate 302 is mounted on the second base 301 via a pin. A second clamping bolt 303 is provided between the second upper platen 302 and the second base 301. A second upper support pin 304 is provided at the outer end of the second upper platen 302 through a second locking nut 308. A second lower support pin 305 is provided on the second base 301 at the position corresponding to the second upper support pin 304. A clamping space is formed between the second upper support pin 304 and the second lower support pin 305. A first sliding block 307 is provided between the second upper platen 302 and the second base 301. A first adjusting block 306 is threadedly connected to the second base 301 and sleeved with the first sliding block 307. The clamping space between the first sliding block 307 and the second upper support pin 304 and the second lower support pin 305 is aligned. A support ball 212 is provided at the opposite ends of the second upper support pin 304 and the second lower support pin 305. Z-axis floating circumferential floating clamping mechanism 4 is used to perform Z-axis floating and circumferential floating clamping on the split-type casing 5. Eight Z-axis floating circumferential floating clamping mechanisms 4 are provided, each divided into four groups. These four groups are arranged in a ring between the Z-axis floating circumferential fixed clamping mechanism 2 and the Z-axis fixed circumferential floating clamping mechanism 3 on the base plate 1. Each Z-axis floating circumferential floating clamping mechanism 4 includes a third base 401, a third upper pressure plate 402, a third lower pressure plate 403, a third clamping bolt 404, a third upper support pin 405, a third lower support pin 406, a second adjusting block 407, and a second sliding block 408. The third upper pressure plate 402 and the third lower pressure plate 403 are both mounted on the third base 401 via pins. Three clamping bolts 404 are threaded between the third upper pressure plate 402 and the third lower pressure plate 403. The third upper support nail 405 and the third lower support nail 406 are respectively set at the outer ends of the third upper pressure plate 402 and the third lower pressure plate 403 through the third locking nut 409, forming a clamping space between the third upper support nail 405 and the third lower support nail 406. The second sliding block 408 is set between the third upper pressure plate 402 and the third lower pressure plate 403, and the second sliding block 408 is aligned with the clamping space between the third upper support nail 405 and the third lower support nail 406. The third base 401 is threadedly connected to a second adjusting block 407 that is sleeved with the second sliding block 408. Support balls 212 are provided at the opposite ends of the third upper support nail 405 and the third lower support nail 406.

[0019] In this invention, the Z-direction floating circumferential fixed clamping mechanism 2, the Z-direction fixed circumferential floating clamping mechanism 3, and the Z-direction floating circumferential floating clamping mechanism 4 cooperate with each other to provide multi-directional adaptive support and clamping for the split housing 5, which can achieve Z-direction and circumferential floating support. At the same time, the support ball 212 can adapt to the shape of the split housing 5, avoid the generation of excessive clamping stress, and make the split housing 5 consistent in the clamping state and the free state, thus avoiding deformation of the split housing 5.

[0020] The method of using the multi-directional adaptive floating fixed support fixture for split-type casings provided by the present invention includes the following steps: A: During clamping, place the split-type housing 5 on the fixture. First, use the Z-direction fixed circumferential floating clamping mechanism 3 to pre-press the split-type housing 5, that is, determine the Z-direction orientation. At this time, the lower inner edge of the split-type housing 5 is placed between the second upper support pin 304 and the second lower support pin 305. Since the second lower support pin 305 is fixedly set on the second base 301, the Z-direction orientation of the split-type housing 5 can be fixed between the second upper support pin 304 and the second lower support pin 305. During this process, the first adjusting bolt 208, the first spring 209 and the first crossbar 210 drive the first lower pressure plate 203 to float according to the Z-direction orientation of the split-type housing 5, so as to ensure that the split-type housing 5 is in the Z-direction free clamping state. B: Then, the Z-axis fixed circumferential floating clamping mechanism 3 is used to pre-press the split-type housing 5, that is, to determine the circumferential orientation of the split-type housing 5. At this time, the position of the first adjusting block 306 on the second base 301 is adjusted so that the first adjusting block 306 drives the first sliding block 307 to abut against the split-type housing 5, thereby determining the circumferential orientation of the split-type housing 5. During this process, the first support block 207 is fixed to the first upper pressure plate 202 and the first lower pressure plate 203, which can further determine the circumferential orientation of the split-type housing 5. C: Finally, the Z-axis floating circumferential floating clamping mechanism 4 is used to press the split housing 5. During this process, the distance between the third upper pressure plate 402 and the third lower pressure plate 403 is adjusted by adjusting the third clamping bolt 404, so that the third upper support nail 405 and the third lower support nail 406 press the split housing 5. Then, the position of the second adjusting block 407 on the third base 401 is adjusted so that the second adjusting block 407 drives the second sliding block 408 to abut against the split housing 5, thus completing the overall clamping of the split housing 5.

[0021] In this embodiment, as Figure 1 As shown, when the first upper support pin 205 and the first lower support pin 206, the second upper support pin 304 and the second lower support pin 305, and the third upper support pin 405 and the third lower support pin 406 clamp the split-type casing 5, the support ball 212 rotates freely according to the shape of the split-type casing 5 to achieve adaptive clamping.

[0022] 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 method of using a multi-directional adaptive floating fixed support clamp for a split-type casing, the clamp comprising a base plate (1), wherein the base plate (1) is provided with a Z-direction floating circumferential fixed clamping mechanism (2), a Z-direction fixed circumferential floating clamping mechanism (3) and a Z-direction floating circumferential floating clamping mechanism (4). The Z-direction floating circumferential fixed clamping mechanism (2) includes a first base (201), a first upper pressure plate (202), a first lower pressure plate (203), a first clamping bolt (204), a first upper support nail (205), a first lower support nail (206), a first support block (207), a first adjusting bolt (208), a first spring (209), and a first crossbar (210). The first upper pressure plate (202) and the first lower pressure plate (203) are both mounted on the first base (201) by a pin. The first upper pressure plate (202) and the first lower pressure plate (203) are connected by the first clamping bolt (204). The first upper support nail (205) and the first lower support nail (206) are respectively mounted on the outer ends of the first upper pressure plate (202) and the first lower pressure plate (203) by the first locking nut (211). The first support block (207) is disposed on the first clamping bolt (204) between the first upper pressure plate (202) and the first lower pressure plate (203), the first adjusting bolt (208) is disposed on the first support block (207) and connected to the first lower pressure plate (203) through the first crossbar (210), and the first spring (209) is sleeved on the first adjusting bolt (208) between the first support block (207) and the first lower pressure plate (203); The Z-direction fixed circumferential floating clamping mechanism (3) includes a second base (301), a second upper pressure plate (302), a second clamping bolt (303), a second upper support nail (304), a second lower support nail (305), a first adjusting block (306), and a first sliding block (307). The second upper pressure plate (302) is mounted on the second base (301) by a pin. The second clamping bolt (303) is provided between the second upper pressure plate (302) and the second base (301). The second upper support nail (304) is mounted on the outer end of the second upper pressure plate (302) by a second locking nut (308). The second lower support nail (305) is mounted on the second base (301) at the position corresponding to the second upper support nail (304). A clamping space is formed between the second upper support nail (304) and the second lower support nail (305). The first sliding block (307) is disposed between the second upper pressure plate (302) and the second base (301), and the second base (301) is threadedly connected to the first adjusting block (306) which is sleeved with the first sliding block (307). The Z-axis floating circumferential floating clamping mechanism (4) includes a third base (401), a third upper pressure plate (402), a third lower pressure plate (403), a third clamping bolt (404), a third upper support nail (405), a third lower support nail (406), a second adjusting block (407), and a second sliding block (408). The third upper pressure plate (402) and the third lower pressure plate (403) are both mounted on the third base (401) by a pin. The third clamping bolt (404) is threaded between the third upper pressure plate (402) and the third lower pressure plate (403). The third upper support nail (405) and the third lower support nail (406) are respectively mounted on the outer ends of the third upper pressure plate (402) and the third lower pressure plate (403) by a third locking nut (409). The second sliding block (408) is disposed between the third upper pressure plate (402) and the third lower pressure plate (403), and the third base (401) is threadedly connected to the second adjusting block (407) which is sleeved with the second sliding block (408). Its features are, Includes the following steps: A: When clamping, place the split-type casing (5) on the fixture. First, use the Z-direction fixed circumferential floating clamping mechanism (3) to pre-press the split-type casing (5) to determine the Z-direction orientation. At this time, the lower inner edge of the split-type casing (5) is placed between the second upper support pin (304) and the second lower support pin (305). Since the second lower support pin (305) is fixedly set on the second base (301), the Z-direction orientation of the split-type casing (5) can be fixed between the second upper support pin (304) and the second lower support pin (305). During this process, the first adjusting bolt (208), the first spring (209) and the first crossbar (210) drive the first lower pressure plate (203) to float according to the Z-direction orientation of the split-type casing (5) to ensure that the split-type casing (5) is in a free clamping state in the Z direction. B: Then use the Z-direction fixed circumferential floating clamping mechanism (3) to pre-press the split-type casing (5), that is, determine the circumferential orientation of the split-type casing (5). At this time, adjust the position of the first adjusting block (306) on the second base (301) so that the first adjusting block (306) drives the first sliding block (307) to abut against the split-type casing (5), thereby determining the circumferential orientation of the split-type casing (5). During this process, the first support block (207) is fixed between the first upper pressure plate (202) and the first lower pressure plate (203), which can further determine the circumferential orientation of the split-type casing (5). C: Finally, the Z-axis floating circumferential floating clamping mechanism (4) is used to press the split-type casing (5). During this process, the distance between the third upper pressure plate (402) and the third lower pressure plate (403) is adjusted by adjusting the third clamping bolt (404), so that the third upper support nail (405) and the third lower support nail (406) press the split-type casing (5). Then, the position of the second adjusting block (407) on the third base (401) is adjusted so that the second adjusting block (407) drives the second sliding block (408) to abut against the split-type casing (5), thus completing the overall clamping of the split-type casing (5).

2. The method of using the multi-directional adaptive floating fixed support fixture for a split-type casing according to claim 1, characterized in that: When the first upper support pin (205) and the first lower support pin (206), the second upper support pin (304) and the second lower support pin (305), and the third upper support pin (405) and the third lower support pin (406) clamp the split-type casing (5), the support ball (212) on it rotates freely according to the shape of the split-type casing (5) to achieve adaptive clamping.

3. The method of using the multi-directional adaptive floating fixed support fixture for a split-type casing according to claim 1, characterized in that: The Z-direction floating circumferential fixed clamping mechanism (2), the Z-direction fixed circumferential floating clamping mechanism (3) and the Z-direction floating circumferential floating clamping mechanism (4) cooperate with each other to provide multi-directional adaptive support and clamping for the split-type housing (5). The Z-direction floating circumferential fixing clamping mechanism (2) is used to perform Z-direction floating and circumferential fixing clamping on the split-type casing (5); The Z-direction fixed circumferential floating clamping mechanism (3) is used to fix the split-type casing (5) in the Z direction and perform circumferential floating clamping. The Z-direction floating and circumferential floating clamping mechanism (4) is used to perform Z-direction floating and circumferential floating clamping on the split-type casing (5).

4. The method of using the multi-directional adaptive floating fixed support fixture for a split-type casing according to claim 3, characterized in that: There are two Z-axis floating circumferential fixed clamping mechanisms (2), and the two Z-axis floating circumferential fixed clamping mechanisms (2) are symmetrically arranged on the base plate (1).

5. The method of using the multi-directional adaptive floating fixed support fixture for a split-type casing according to claim 1, characterized in that: A clamping space is formed between the first upper support pin (205) and the first lower support pin (206); The opposing ends of the first upper support nail (205) and the first lower support nail (206) are provided with support balls (212).

6. The method of using the multi-directional adaptive floating fixed support fixture for a split-type casing according to claim 4, characterized in that: There are four Z-direction fixed circumferential floating clamping mechanisms (3). The four Z-direction fixed circumferential floating clamping mechanisms (3) are divided into two groups. The two groups of Z-direction fixed circumferential floating clamping mechanisms (3) are symmetrically distributed in a ring on the base plate (1). The two sets of Z-direction fixed circumferential floating clamping mechanisms (3) and the two Z-direction floating circumferential fixed clamping mechanisms (2) are arranged in a cross shape on the base plate (1).

7. The method of using the multi-directional adaptive floating fixed support fixture for a split-type casing according to claim 1, characterized in that: The clamping space between the first sliding block (307) and the second upper support pin (304) and the second lower support pin (305) is aligned; The opposing ends of the second upper support pin (304) and the second lower support pin (305) are each provided with a support ball (212).

8. The method of using a multi-directional adaptive floating fixed support fixture for a split-type casing according to claim 6, characterized in that: There are eight Z-direction floating circumferential floating clamping mechanisms (4). The eight Z-direction floating circumferential floating clamping mechanisms (4) are divided into four groups. The four groups of Z-direction floating circumferential floating clamping mechanisms (4) are arranged in a ring between the Z-direction floating circumferential fixed clamping mechanism (2) and the Z-direction fixed circumferential floating clamping mechanism (3) on the base plate (1).

9. The method of using the multi-directional adaptive floating fixed support fixture for a split-type casing according to claim 1, characterized in that: A clamping space is formed between the third upper support pin (405) and the third lower support pin (406); The second sliding block (408) is aligned with the clamping space between the third upper support pin (405) and the third lower support pin (406); The third upper support nail (405) and the third lower support nail (406) are each provided with a support ball (212) at their opposite ends.

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