Tool for checking rotor seat casting of compressor

Abstract

The invention relates to the technical field of rotor seat casting inspection, in particular to a compressor rotor seat casting inspection tool which comprises a conveying belt, a bearing plate is placed on the surface of the conveying belt, a groove is formed in the surface of the bearing plate, a jacking block is arranged on the surface of the groove, a ball is arranged on the surface of the groove, and a second lifting groove is formed in the surface of the groove. A stress plate is inserted into the second lifting groove; the device has the beneficial effects that a downward pressing block is downwards pressed in an open groove, a spring at the bottom of a jacking block jacks the jacking block, so that the jacking block jacks the bottom of a casting after rising, the position of the casting is stabilized, a rotating rod and a measuring head extend into an open hole, the end part of the measuring head can jack the inner wall of the open hole, and the measuring head can rotate along with rotation of the rotating rod. The measuring head measures the inner wall of the hole and measures the internal diameter of the hole, the casting can be detected through the structure, and manual measurement is not needed.

Description

Technical Field

[0001] This invention relates to the field of rotor housing casting inspection technology, specifically a tooling for inspecting compressor rotor housing castings. Background Technology

[0002] The compressor rotor housing casting serves as the mounting reference and support carrier for the compressor rotor (male and female rotors), integrating bearing holes, sealing surfaces, intake / exhaust chamber channels, and flange connection surfaces. It must withstand the radial / axial loads of the rotor and the pressure of high-pressure gas, while also serving as a positioning, vibration damping, and sealing mechanism to prevent leakage.

[0003] In the prior art, patent CN206862258U discloses a tooling for inspecting compressor rotor seat castings, including a scale, a fastening nut, a handle, a fastening bolt, a template, a fixed plate, a movable plate, a fixing block, and a connecting rod. The scale is fixedly connected to the template, the template has mounting holes, the rear end of the template is fixed to a fixing block, the fixed plate and the movable plate are both fixed to the upper end of the template, the lower end of the movable plate is fixed to a connecting rod, the connecting rod is fixedly connected to the fastening bolt, the right end of the fastening bolt is fixed to a handle, the front end of the template has a slot, the template has an opening, the fastening bolt is connected to the template through a fastening nut, the surfaces of the fixed plate and the movable plate are curved, the structure is simple, the inspection process is time-saving and labor-saving, it can quickly and conveniently detect the dimensional deviation of the male and female rotor holes and bearing holes, and identify defective products, with high inspection efficiency and reduced production scrap rate.

[0004] However, existing inspection methods require manual inspection of the openings on the surface of the compressor rotor housing casting using inspection tools to determine whether the diameter of the openings meets the requirements, resulting in low inspection efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a tooling for inspecting compressor rotor housing castings, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tooling for inspecting compressor rotor housing castings, comprising: The conveyor belt has a support plate on its surface, a groove on its surface, a top support block on its surface, a ball bearing on its surface, a second lifting groove on its surface, a force-bearing plate inserted into the second lifting groove, and a casting on its surface. A fixed plate has an extension block fixed to its surface. A vertical pipe is installed at the bottom of the fixed plate, and a telescopic rod is installed at the bottom of the vertical pipe. A pressing block is fixed at the bottom of the telescopic rod. A connecting rod is installed at the bottom of the fixed plate, and an extension plate is fixed at the bottom of the connecting rod. A limit plate is fixed at the bottom of the extension plate, and a measuring head is installed at the bottom of the fixed plate.

[0007] Preferably, the top of the fixed plate is connected to a lifting rod, and the top of the lifting rod is connected to a lifting device. The lifting device drives the lifting rod to move up and down, and the fixed plate moves up and down with the lifting rod. The conveyor belt can drive the support plate to move. Multiple sets of first lifting slots are opened on the surface of the groove. A top holding block is inserted into the first lifting slot. The top holding block can move up and down in the first lifting slot. A second spring is provided inside the support plate. The second spring is located at the bottom of the top holding block. The second spring has a pushing force on the top holding block, so that the top of the top holding block is located outside the first lifting slot.

[0008] Preferably, the bottom of the force-bearing plate is connected to the bottom of multiple sets of supporting blocks. The supporting blocks move up and down with the force-bearing plate, and the force-bearing plate can move up and down in the second lifting groove. The surface of the support plate is provided with grooves, and there are two sets of grooves. The grooves are located on both sides of the groove, and the ball bearings can roll on the surface of the groove.

[0009] Preferably, the bottom of the extension block and the fixing plate is provided with a transverse groove, and a transverse plate is inserted into the transverse groove. The transverse plate can move transversely in the transverse groove. A spring is provided in the transverse groove. One end of the spring is connected to the inner wall of the transverse groove, and the other end is connected to the surface of the transverse plate. The spring has a pushing force on the transverse plate, so that the transverse plate is located on one side of the transverse groove. The end of the riser is fixed to the surface of the transverse plate, and the riser moves with the transverse plate.

[0010] Preferably, a sector-shaped plate is fixed to the surface of the riser, and the sector-shaped plate moves with the riser. A telescopic rod is inserted into the bottom of the riser, and the telescopic rod can move up and down inside the riser. A third spring is installed inside the riser, and the third spring has a pushing force on the telescopic rod, so that the telescopic rod is exposed outside the riser. A pressing block is fixed to the bottom of the telescopic rod, and the pressing block moves up and down with the telescopic rod.

[0011] Preferably, the bottom of the fixed plate is fixed with multiple sets of connecting rods, the extension plate and the limiting plate are L-shaped, the surface of the limiting plate is provided with a through groove, a force-applying plate is inserted into the through groove, the force-applying plate can move up and down in the through groove, the inner wall of the through groove is provided with a limiting groove, and the limiting block on the surface of the force-applying plate is inserted into the limiting groove, the limiting block can move up and down in the limiting groove.

[0012] Preferably, the surface of the fixing plate is provided with multiple sets of cylinders, and a piston rod is inserted into the bottom of the fixing plate. The cylinders can drive the piston rod to move up and down. A rotating rod is provided at the bottom of the piston rod, and the rotating rod can rotate at the end of the piston rod. A measuring head is connected to the surface of the rotating rod. The measuring head moves up and down with the piston rod and rotates with the rotating rod.

[0013] Preferably, a casting is placed on the surface of the support plate, and an opening is formed on the surface of the casting, allowing the piston rod, rotating rod, and measuring head to enter the interior of the opening, and the measuring head to measure the diameter of the opening.

[0014] Preferably, when the top holding block is located outside the first lifting groove, the top of the top holding block is higher than the top of the ball, the casting is located on the surface of the support plate, the top holding block is held against the bottom of the casting, and a handle is fixed on the surface of the support plate.

[0015] Preferably, the elastic force of the third spring inside the riser is greater than the elastic force of the second spring inside the support plate. When the lowering block presses down on the surface of the force plate, it can press the force plate into the second lifting groove, so that the top holding block descends with the force plate. After the top holding block descends, the ball contacts the bottom of the casting, and the rolling of the ball allows the casting to move on the surface of the support plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The present invention proposes a lifting rod driving the fixed plate to descend, and the pressing block descends with the fixed plate, pressing against the surface of the force plate. Since the force plate is connected to multiple sets of pressing blocks, when the force plate is pressed into the second lifting groove, the pressing block retracts into the interior of the first lifting groove, and the ball bearings contact the surface of the casting, allowing the position of the casting to be adjusted. As the fixed plate continues to descend, the telescopic rod can retract into the interior of the riser, and the surface of the limiting plate contacts the surface of the casting. Multiple sets of limiting plates are provided. After multiple sets of limiting plates contact the surface of the casting, the position of the casting is adjusted. After the limiting plate continues to descend, the surface of the force plate contacts the top of the casting, causing the force plate to rise. The force plate moves upward in the limiting groove. The lifting mechanism brings the surface of the force-applying plate into contact with the sector plate. Under the pressure of the force-applying plate, the sector plate moves the riser. The transverse plate moves laterally in the transverse groove. The telescopic rod and the lower pressure block move laterally with the riser. The lower pressure block no longer rests against the surface of the force-applying plate, allowing it to press down into the groove. The spring at the bottom of the supporting block pushes against the supporting block, causing it to rise and support the bottom of the casting, stabilizing its position. The rotating rod and the measuring head extend into the opening. The end of the measuring head can support the inner wall of the opening, and as the rotating rod rotates, the measuring head measures the inner wall of the opening, measuring the internal diameter of the opening. This structure allows for the inspection of the casting without the need for manual measurement. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the fixing plate structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the support plate structure of the present invention.

[0020] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0021] Figure 5 This is a schematic diagram of the fixing plate of the present invention from another perspective.

[0022] Figure 6 This is a schematic diagram of the riser structure of the present invention.

[0023] Figure 7 This is a schematic diagram of the limiting plate structure of the present invention.

[0024] Figure 8 This is a schematic diagram of the piston rod structure of the present invention.

[0025] Figure 9 This is a schematic diagram of the casting structure of the present invention.

[0026] Figure 10 This is a schematic diagram of the measuring head structure of the present invention.

[0027] In the diagram: 1. Conveyor belt; 2. Casting; 3. Fixing plate; 4. Lifting rod; 5. Cylinder; 6. Groove; 7. Support plate; 8. Handle; 9. First lifting groove; 10. Top holding block; 11. Ball bearing; 12. Second lifting groove; 13. Force plate; 14. Slot; 15. Extension block; 16. Spring; 17. Horizontal movement groove; 18. Vertical pipe; 19. Telescopic rod; 20. Lower pressure block; 21. Limiting plate; 22. Extension plate; 23. Connecting rod; 24. Fan-shaped plate; 25. Horizontal movement plate; 26. Limiting groove; 27. Through groove; 28. Force application plate; 29. ​​Piston rod; 30. Opening; 31. Rotating rod; 32. Measuring head. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit 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.

[0029] Please see Figures 1 to 10 The present invention provides a technical solution: Example 1: A tooling for inspecting compressor rotor housing castings, comprising: a conveyor belt 1, a support plate 7 placed on the surface of the conveyor belt 1, a groove 6 formed on the surface of the support plate 7, a top holding block 10 provided on the surface of the groove 6, balls 11 provided on the surface of the groove 6, a second lifting groove 12 formed on the surface of the groove 6, a force-bearing plate 13 inserted into the second lifting groove 12, and a casting 2 placed on the surface of the groove 6; a fixing plate 3, an extension block 15 fixed on the surface of the fixing plate 3, a riser 18 provided at the bottom of the fixing plate 3, and a telescopic extension mechanism at the bottom of the riser 18. The bottom of the telescopic rod 19 is fixed with a pressing block 20. The bottom of the fixed plate 3 is provided with a connecting rod 23. The bottom of the connecting rod 23 is fixed with an extension plate 22. The bottom of the extension plate 22 is fixed with a limiting plate 21. The bottom of the fixed plate 3 is provided with a measuring head 32. The surface of the limiting plate 21 is in contact with the surface of the casting 2. Multiple sets of limiting plates 21 are provided. After multiple sets of limiting plates 21 are in contact with the surface of the casting 2, the position of the casting 2 is adjusted. After the limiting plate 21 continues to descend, the surface of the force plate 28 contacts the top of the casting 2, causing the force plate 28 to rise.

[0030] Example 2: Based on Example 1, a lifting rod 4 is connected to the top of the fixed plate 3, and a lifting device is connected to the top of the lifting rod 4. The lifting device drives the lifting rod 4 to move up and down, and the fixed plate 3 moves up and down with the lifting rod 4. The conveyor belt 1 can drive the support plate 7 to move. Multiple sets of first lifting grooves 9 are opened on the surface of the groove 6. A top holding block 10 is inserted into the first lifting groove 9 and can move up and down in the first lifting groove 9. A second spring is provided inside the support plate 7. The second spring is located at the bottom of the top holding block 10 and has a pushing force on the top holding block 10, so that the top of the top holding block 10 is outside the first lifting groove 9. Multiple sets of connecting rods 23 are fixed at the bottom of the fixed plate 3. The extension plate 22 and the limiting plate 21 are L-shaped. A through groove 27 is opened on the surface of the limiting plate 21. A force-applying plate 28 is inserted into the through groove 27 and can move up and down in the through groove. The through-slot 27 moves vertically and vertically. A limiting groove 26 is opened on the inner wall of the through-slot 27. A limiting block on the surface of the force-applying plate 28 is inserted into the limiting groove 26. The limiting block can move vertically and vertically in the limiting groove 26. Multiple sets of cylinders 5 are provided on the surface of the fixed plate 3. A piston rod 29 is inserted into the bottom of the fixed plate 3. The cylinders 5 can drive the piston rod 29 to move vertically and vertically. A rotating rod 31 is provided at the bottom of the piston rod 29. The rotating rod 31 can rotate at the end of the piston rod 29. A measuring head 32 is connected to the surface of the rotating rod 31. The measuring head 32 moves vertically and vertically with the piston rod 29 and rotates with the rotating rod 31. The rotating rod 31 and the measuring head 32 extend into the opening 30. The end of the measuring head 32 can hold against the inner wall of the opening 30. As the rotating rod 31 rotates, the measuring head 32 measures the inner wall of the opening 30 and measures the inner diameter of the opening 30.

[0031] The bottom of the force-bearing plate 13 is connected to the bottom of multiple sets of supporting blocks 10. The supporting blocks 10 move up and down with the force-bearing plate 13. The force-bearing plate 13 can move up and down in the second lifting groove 12. The surface of the support plate 7 is provided with slots 14. There are two sets of slots 14. The slots 14 are located on both sides of the groove 6. The ball bearings 11 can roll on the surface of the groove 6. The surface of the support plate 7 is provided with a casting 2. The surface of the casting 2 is provided with an opening 30. The piston rod 29, the rotating rod 31 and the measuring head 32 can enter the interior of the opening 30. The measuring head 32 can measure the diameter of the opening 30. When the top holding block 10 is located outside the first lifting groove 9, the top of the top holding block 10 is higher than the top of the ball 11. The casting 2 is located on the surface of the support plate 7, and the top holding block 10 is held against the bottom of the casting 2. The surface of the support plate 7 is fixed with a handle 8. The conveyor belt 1 drives the support plate 7 to move. When the support plate 7 moves to the bottom of the fixed plate 3, since the bottom of the top holding block 10 is provided with a spring, the spring holds the top holding block 10, so that the top of the top holding block 10 is higher than the top of the ball 11. The top of the top holding block 10 contacts the bottom of the casting 2, and the casting 2 can be stably placed on the surface of the support plate 7.

[0032] The bottom of the extension block 15 and the fixing plate 3 are provided with a transverse sliding groove 17. A transverse sliding plate 25 is inserted into the transverse sliding groove 17 and can move laterally within the transverse sliding groove 17. A spring 16 is provided in the transverse sliding groove 17. One end of the spring 16 is connected to the inner wall of the transverse sliding groove 17, and the other end is connected to the surface of the transverse sliding plate 25. The spring 16 exerts a pushing force on the transverse sliding plate 25, so that the transverse sliding plate 25 is located on one side of the transverse sliding groove 17. The end of the riser 18 is fixed to the surface of the transverse sliding plate 25 and moves with the transverse sliding plate 25. A sector plate 24 is fixed to the surface of the riser 18 and moves with the riser 18. A telescopic rod 19 is inserted into the bottom of the riser 18 and can move up and down inside the riser 18. A third spring is provided inside the riser 18 and exerts a pushing force on the telescopic rod 19, so that the telescopic rod 19 is exposed outside the riser 18. Externally, a pressing block 20 is fixed to the bottom of the telescopic rod 19. The pressing block 20 moves up and down with the telescopic rod 19. The elastic force of the third spring inside the riser 18 is greater than the elastic force of the second spring inside the support plate 7. When the pressing block 20 presses down on the surface of the force plate 13, it can press the force plate 13 into the second lifting groove 12, so that the top holding block 10 descends with the force plate 13. After the top holding block 10 descends, the ball bearing 11 contacts the bottom of the casting 2. The rolling of the ball bearing 11 allows the casting 2 to move on the surface of the support plate 7. When the force plate 13 is pressed into the second lifting groove 12, the top holding block 10 retracts into the interior of the first lifting groove 9. The ball bearing 11 contacts the surface of the casting 2, so that the position of the casting 2 can be adjusted. The fixing plate 3 continues to descend, and the telescopic rod 19 can retract into the interior of the riser 18. The surface of the limiting plate 21 contacts the surface of the casting 2.

[0033] The support plate 7 is placed on the surface of the conveyor belt 1, and the casting 2 is placed on the surface of the support plate 7. The conveyor belt 1 drives the support plate 7 to move. When the support plate 7 moves to the bottom of the fixed plate 3, because the bottom of the top holding block 10 is provided with a spring, the spring holds the top holding block 10, so that the top of the top holding block 10 is higher than the top of the ball 11. The top of the top holding block 10 contacts the bottom of the casting 2, and the casting 2 can be stably placed on the surface of the support plate 7. After the lifting rod 4 drives the fixed plate 3 to descend, the pressing block 20 descends with the fixed plate 3 and presses down. Block 20 rests on the surface of the force-bearing plate 13. Since the force-bearing plate 13 is connected to multiple sets of supporting blocks 10, when the force-bearing plate 13 is pressed into the second lifting groove 12, the supporting blocks 10 retract into the interior of the first lifting groove 9, and the ball bearings 11 contact the surface of the casting 2, allowing the position of the casting 2 to be adjusted. The fixing plate 3 continues to descend, and the telescopic rod 19 can retract into the interior of the riser 18. Furthermore, the surface of the limiting plate 21 contacts the surface of the casting 2. Multiple sets of limiting plates 21 are provided, and the multiple sets of limiting plates 21 contact the surface of the casting 2. After contact, the position of casting 2 is adjusted. After the limiting plate 21 continues to descend, the surface of the force plate 28 contacts the top of casting 2, causing the force plate 28 to rise. The force plate 28 rises in the limiting groove 26, and the surface of the force plate 28 contacts the sector plate 24. Under the pressure of the force plate 28, the sector plate 24 drives the riser 18 to move. The transverse plate 25 moves transversely in the transverse groove 17. The telescopic rod 19 and the lower pressure block 20 move transversely with the riser 18. The lower pressure block 20 no longer presses against the surface of the force plate 13, so that the lower pressure block... The 20 is pressed down in the slot 14, and the spring at the bottom of the top holding block 10 pushes the top holding block 10, so that the top holding block 10 rises and holds the bottom of the casting 2, stabilizing the position of the casting 2. The rotating rod 31 and the measuring head 32 extend into the opening 30. The end of the measuring head 32 can hold the inner wall of the opening 30, and as the rotating rod 31 rotates, the measuring head 32 measures the inner wall of the opening 30, measuring the inner diameter of the opening 30. The casting 2 can be inspected through the above structure without the need for manual measurement.

[0034] Although specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. A tooling for inspecting compressor rotor housing castings, characterized in that: include: A conveyor belt (1) is provided with a support plate (7) on its surface. A groove (6) is provided on the surface of the support plate (7). A top support block (10) is provided on the surface of the groove (6). A ball bearing (11) is provided on the surface of the groove (6). A second lifting groove (12) is provided on the surface of the groove (6). A force-bearing plate (13) is inserted into the second lifting groove (12). A casting (2) is provided on the surface of the groove (6). A fixed plate (3) is provided with an extension block (15) on its surface. A riser (18) is provided at the bottom of the fixed plate (3). A telescopic rod (19) is provided at the bottom of the riser (18). A pressing block (20) is fixed at the bottom of the telescopic rod (19). A connecting rod (23) is provided at the bottom of the fixed plate (3). An extension plate (22) is fixed at the bottom of the connecting rod (23). A limit plate (21) is fixed at the bottom of the extension plate (22). A measuring head (32) is provided at the bottom of the fixed plate (3).

2. The tooling for inspecting compressor rotor housing castings according to claim 1, characterized in that: The top of the fixed plate (3) is connected to the lifting rod (4), and the top of the lifting rod (4) is connected to the lifting device. The lifting device drives the lifting rod (4) to move up and down. The fixed plate (3) moves up and down with the lifting rod (4). The conveyor belt (1) can drive the support plate (7) to move. Multiple sets of first lifting grooves (9) are opened on the surface of the groove (6). A top holding block (10) is inserted in the first lifting groove (9). The top holding block (10) can move up and down in the first lifting groove (9). A second spring is provided inside the support plate (7). The second spring is located at the bottom of the top holding block (10). The second spring has a pushing force on the top holding block (10), so that the top of the top holding block (10) is located outside the first lifting groove (9).

3. The tooling for inspecting compressor rotor housing castings according to claim 2, characterized in that: The bottom of the force plate (13) is connected to the bottom of multiple sets of top holding blocks (10). The top holding blocks (10) move up and down with the force plate (13). The force plate (13) can move up and down in the second lifting groove (12). The surface of the support plate (7) is provided with a slot (14). There are two sets of slots (14). The slots (14) are located on both sides of the groove (6). The ball (11) can roll on the surface of the groove (6).

4. The tooling for inspecting compressor rotor housing castings according to claim 3, characterized in that: The bottom of the extension block (15) and the fixing plate (3) is provided with a transverse groove (17), and a transverse plate (25) is inserted into the transverse groove (17). The transverse plate (25) can move transversely in the transverse groove (17). A spring (16) is provided in the transverse groove (17). One end of the spring (16) is connected to the inner wall of the transverse groove (17), and the other end is connected to the surface of the transverse plate (25). The spring (16) has a pushing force on the transverse plate (25), so that the transverse plate (25) is located on one side of the transverse groove (17). The end of the riser (18) is fixed to the surface of the transverse plate (25), and the riser (18) moves with the transverse plate (25).

5. The tooling for inspecting compressor rotor housing castings according to claim 4, characterized in that: A sector plate (24) is fixed on the surface of the riser (18). The sector plate (24) moves with the riser (18). A telescopic rod (19) is inserted into the bottom of the riser (18). The telescopic rod (19) can move up and down inside the riser (18). A third spring is installed inside the riser (18). The third spring has a thrust on the telescopic rod (19), so that the telescopic rod (19) is exposed outside the riser (18). A lower pressure block (20) is fixed at the bottom of the telescopic rod (19). The lower pressure block (20) moves up and down with the telescopic rod (19).

6. The tooling for inspecting compressor rotor housing castings according to claim 5, characterized in that: The bottom of the fixed plate (3) is fixed with multiple sets of connecting rods (23). The extension plate (22) and the limiting plate (21) are L-shaped. The surface of the limiting plate (21) is provided with a through groove (27). A force plate (28) is inserted into the through groove (27). The force plate (28) can move up and down in the through groove (27). A limiting groove (26) is provided on the inner wall of the through groove (27). The limiting block on the surface of the force plate (28) is inserted into the limiting groove (26). The limiting block can move up and down in the limiting groove (26).

7. The tooling for inspecting compressor rotor housing castings according to claim 6, characterized in that: The surface of the fixed plate (3) is provided with multiple sets of cylinders (5), and a piston rod (29) is inserted into the bottom of the fixed plate (3). The cylinders (5) can drive the piston rod (29) to move up and down. A rotating rod (31) is provided at the bottom of the piston rod (29). The rotating rod (31) can rotate at the end of the piston rod (29). A measuring head (32) is connected to the surface of the rotating rod (31). The measuring head (32) moves up and down with the piston rod (29) and rotates with the rotating rod (31).

8. The tooling for inspecting compressor rotor housing castings according to claim 7, characterized in that: The surface of the support plate (7) is provided with a casting (2), and the surface of the casting (2) is provided with an opening (30). The piston rod (29), the rotating rod (31) and the measuring head (32) can enter the interior of the opening (30), and the measuring head (32) can measure the diameter of the opening (30). The end of the measuring head (32) can be held against the inner wall of the opening (30), and as the rotating rod (31) rotates, the measuring head (32) measures the inner wall of the opening (30) to measure the inner diameter of the opening (30).

9. The tooling for inspecting compressor rotor housing castings according to claim 8, characterized in that: When the top holding block (10) is located outside the first lifting groove (9), the top of the top holding block (10) is higher than the top of the ball (11), the casting (2) is located on the surface of the support plate (7), the top holding block (10) is held against the bottom of the casting (2), the surface of the support plate (7) is fixed with a handle (8), the spring at the bottom of the top holding block (10) pushes the top holding block (10) up, so that the top holding block (10) rises and holds against the bottom of the casting (2), stabilizing the position of the casting (2).

10. A tooling for inspecting compressor rotor housing castings according to claim 9, characterized in that: The elastic force of the third spring inside the riser (18) is greater than the elastic force of the second spring inside the support plate (7). When the pressing block (20) presses down on the surface of the force plate (13), it can press the force plate (13) into the second lifting groove (12), so that the top holding block (10) descends with the force plate (13). After the top holding block (10) descends, the ball (11) contacts the bottom of the casting (2). The rolling of the ball (11) allows the casting (2) to move on the surface of the support plate (7).

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