A laser cladding device special for screw vacuum pump body

Abstract

The utility model relates to a kind of laser cladding equipment special for screw vacuum pump body, involve vacuum pump maintenance technical field, it includes frame, cladding spray head and pipe body, cladding spray head is installed on pipe body;It further includes moving stage, rotating mechanism and adjusting mechanism, rotating mechanism includes main shaft and first motor, moving stage is slidably installed on frame, main shaft one end is rotatably installed on moving stage, first motor is fixedly installed on moving stage, main shaft is connected with the output shaft of first motor, pipe body one end is hinged with the one end of main shaft;Adjusting mechanism includes adjusting seat and adjusting lever, adjusting seat is slidably installed on main shaft, adjusting lever first end is hinged with adjusting seat, adjusting lever second end is hinged with the pipe body of one end close to cladding spray head.The utility model can improve cladding quality and cladding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump maintenance technology, and in particular to a laser cladding device for screw vacuum pump bodies. Background Technology

[0002] A vacuum pump is a key device used to extract gas molecules from a closed system, thereby creating a partial or complete vacuum environment. It is widely used in industrial manufacturing, scientific research, medical equipment, and laboratories. The pump body of a screw vacuum pump is the core component of the entire device. Its interior typically features two overlapping cylindrical cavities to house and guide the movement of a pair of meshing screw rotors. The manufacturing quality and surface properties of the pump body directly affect the pump's sealing performance, durability, pumping efficiency, and overall service life.

[0003] After prolonged use, the inner wall of a vacuum pump will wear excessively, leading to a decrease in pumping efficiency. In severe cases, this can cause the vacuum pump to become unusable.

[0004] Currently, a Chinese invention patent with publication number CN120138625B and publication date of November 4, 2021, proposes a laser cladding device for a vacuum pump body, including: a positioning component, a cladding assembly, a rotation drive mechanism, and a vertical feed mechanism. By positioning the pump body and driving two sets of cladding assemblies to rotate and move, laser cladding processing of the inner surface of the pump body can be achieved.

[0005] Regarding the aforementioned technologies, using a gear and rack system with the same set of driving components to simultaneously drive two sets of cladding heads to rotate in the same direction, the pump body has two internal cavities respectively equipped with a driving screw and a driven screw. Since the driving screw is directly connected to the drive source, it is responsible for transmitting torque while also overcoming the resistance of the driven screw and the reaction force of gas compression. Therefore, the radial force and frictional force exerted by the driving screw on the inner wall of the cylinder are usually greater, leading to more severe wear on the inner wall corresponding to the driving screw than on the inner wall corresponding to the driven screw. Therefore, when the wear levels of the two inner cavities of the cylinder are inconsistent, synchronous cladding using the aforementioned two sets of cladding components will result in the cladding rate and rotation angle being the same. This will cause one of the inner cavities to have an insufficient coating thickness after cladding, requiring re-cladding or adding difficulty to subsequent inner cavity grinding steps, severely affecting cladding efficiency and resulting in poor cladding effect. Utility Model Content

[0006] To improve the cladding quality of the vacuum pump body, this invention provides a dedicated laser cladding device for screw vacuum pump bodies.

[0007] This utility model provides a laser cladding device for screw vacuum pump bodies, which adopts the following technical solution: A laser cladding device for screw vacuum pump bodies includes a frame, a cladding nozzle, and a tube body, with the cladding nozzle mounted on the tube body. It also includes a moving platform, a rotating mechanism, and an adjusting mechanism. The rotating mechanism includes a main shaft and a first motor. The moving platform is slidably mounted on the frame, one end of the main shaft is rotatably mounted on the moving platform, the first motor is fixedly mounted on the moving platform, the main shaft is drively connected to the output shaft of the first motor, and one end of the tube body is hinged to one end of the main shaft. The adjustment mechanism includes an adjustment seat and an adjustment rod. The adjustment seat is slidably mounted on the main shaft. The first end of the adjustment rod is hinged to the adjustment seat, and the second end of the adjustment rod is hinged to the tube body near the end of the cladding nozzle.

[0008] Preferably, the frame is further provided with a moving mechanism, which includes a first screw, a second motor and a fixed plate. The two fixed plates are fixedly installed on the upper end of the frame. The two ends of the first screw are rotatably installed on the fixed plate. The second motor is fixedly installed on the fixed plate. The output shaft of the second motor is drivenly connected to the first screw. The moving platform is threadedly connected to the first screw.

[0009] Preferably, the adjusting mechanism further includes a second screw and a third motor. The second screw is rotatably mounted on the main shaft, and the third motor is fixedly mounted on the main shaft. The second screw is drively connected to the output shaft of the third motor, and the second screw is threadedly connected to the adjusting seat.

[0010] Preferably, the adjustment mechanism further includes a distance sensor, which is fixedly mounted on the tube body.

[0011] Preferably, the adjusting mechanism further includes a telescopic cylinder, guide rods, and a lifting platform. A plurality of guide rods are fixedly installed on the frame, the lifting platform is slidably disposed on the guide rods, the telescopic cylinder is fixedly installed on the frame, and the piston rod of the telescopic cylinder is fixedly connected to the bottom end of the lifting platform; the moving platform is slidably disposed on the lifting platform, and the fixed plate is fixedly installed on the lifting platform.

[0012] Preferably, the rotating mechanism further includes a support assembly, which includes a support platform and a support plate. The support platform is fixedly installed on the frame and is located at the end of the tube away from the first motor. The support plate is detachably fixedly installed on the support platform. The support plate has a positioning hole, and a connecting shaft is rotatably installed in the positioning hole. The end of the connecting shaft away from the positioning hole is detachably fixedly connected to the main shaft.

[0013] Preferably, the connecting shaft is a multi-segment telescopic shaft.

[0014] Preferably, the frame is provided with a fixing mechanism for fixing the vacuum pump body. The fixing mechanism includes a fixing base, a fixing platform, a clamping plate, and adjusting screws. The fixing base is fixedly installed on the upper end of the frame. An adjusting groove is opened on the upper end of the fixing base. The fixing platform is slidably disposed on the fixing base through the adjusting groove. The two clamping plates are slidably disposed on the fixing platform. The two adjusting screws are threadedly connected to the top end of the fixing platform. One end of the adjusting screw is rotatably connected to the clamping plate.

[0015] Preferably, the fixing mechanism further includes a third screw and a fourth motor. The two ends of the third screw are rotatably mounted on the fixing base, and the third screw is threadedly connected to the bottom of the fixing platform. The fourth motor is fixedly mounted on one end of the fixing base, and the output shaft of the fourth motor is drivenly connected to the third screw.

[0016] In summary, this utility model has at least one of the following beneficial technical effects: 1. By adjusting the position of the adjusting seat, the cladding nozzle is adjusted to a suitable cladding rotation diameter. Then, the above cladding process is repeated, so that the two inner cavities are cladding respectively. This simplifies the cladding process, reduces the frequency of manual replacement of cladding equipment, and enables targeted cladding of the inner cavities, thereby improving cladding quality and efficiency.

[0017] 2. During the cladding process, when it is necessary to move along the inner cavity axis, the second motor drives the first screw to rotate, and the first screw drives the moving table to move, which improves the moving accuracy of the moving table, reduces the cladding error of the equipment, and improves the cladding quality.

[0018] 3. By controlling the movement distance of the adjusting seat according to the rotation angle and radius of the adjusting rod, and in combination with the rotation angle and radius of the corresponding pipe body, the rotation radius of the cladding nozzle can be precisely controlled, thereby enabling adjustment according to the inner diameter of the inner cavity and improving the cladding quality.

[0019] 4. During the cladding process, the main shaft and the connecting shaft rotate synchronously and coaxially, which improves the stability of the main shaft rotation and the cladding accuracy. The connecting shaft and the support plate can be connected by bearings to achieve a rotating and sliding connection, realizing simultaneous rotation and sliding.

[0020] 5. By rotating the adjusting screw, the pump body is fixed using the clamping plates at both ends. The fixed platform uses a sliding method to adjust the position of the two inner cavities, achieving rapid adjustment and improving the cladding efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 yes Figure 1 A schematic diagram from another perspective; Figure 3 This is a structural diagram showing the position of the fixed mechanism; Figure 4 This is a cross-sectional schematic diagram of the entire utility model; Figure 5 yes Figure 4 A magnified view of part A in the middle; Figure 6 This is a partial structural diagram of the equipment after the pump body has been placed.

[0022] Explanation of reference numerals in the attached drawings: 100, frame; 110, cladding nozzle; 130, pipe body; 140, moving platform; 200, rotating mechanism; 210, main shaft; 220, first motor; 230, support assembly; 231, support platform; 232, support plate; 233, positioning hole; 234, connecting shaft; 300, adjusting mechanism; 310, adjusting seat; 320, adjusting rod; 330, second screw; 340, third motor; 350, distance sensor; 360, telescopic cylinder; 370, guide rod; 380, lifting platform; 400, moving mechanism; 410, first screw; 420, second motor; 430, fixing plate; 500, fixing mechanism; 510, fixing seat; 520, fixing platform; 530, clamping plate; 540, adjusting screw; 550, adjusting groove; 560, third screw; 570, fourth motor. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 To be continued Figure 6 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0025] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] This utility model discloses a laser cladding device specifically for screw vacuum pump bodies. (Refer to...) Figures 1 to 6 A laser cladding device for screw vacuum pump bodies mainly includes a frame 100, a cladding nozzle 110, and a tube 130, with the cladding nozzle 110 mounted on the tube 130. It also includes a moving platform 140, a rotating mechanism 200, and an adjusting mechanism 300. The rotating mechanism 200 includes a main shaft 210 and a first motor 220. The moving platform 140 is slidably mounted on the frame 100. One end of the main shaft 210 is rotatably mounted on the moving platform 140, and the first motor 220 is fixedly mounted on the moving platform 140. The main shaft 210 is connected to the output shaft of the first motor 220 via a transmission connection. One end of the tube 130 is hinged to one end of the main shaft 210. The adjusting mechanism 300 includes an adjusting seat 310 and an adjusting rod 320. The adjusting seat 310 is slidably mounted on the main shaft 210. The first end of the adjusting rod 320 is hinged to the adjusting seat 310, and the second end of the adjusting rod 320 is hinged to the tube 130 near the end of the cladding nozzle 110.

[0029] During cladding, the pump body is placed in the corresponding position on the frame 100. Then, by moving the moving table 140, the cladding nozzle 110 on the pipe 130 is moved into one of the inner cavities of the pump body, making the axis of the main shaft 210 coaxial with the axis of the inner cavity of the pump body. Then, by adjusting the position of the adjusting rod 320, a certain angle is rotated, causing the entire pipe 130 to rotate a certain angle, adjusting the distance between the cladding nozzle 110 at one end of the pipe 130 and the rotation center axis, thereby adjusting the rotation diameter of the cladding nozzle 110, so that the cladding diameter of the cladding nozzle 110 fits with the inner cavity. Then, the first motor 220 in the rotating mechanism 200 drives the main shaft 210 to rotate at a set cladding speed, based on the collected predicted diameter after inner cavity wear. Using the diameter of the cladding nozzle 110 as a reference, the first motor 220 drives the main shaft 210 to rotate at a set cladding speed. According to the cladding progress, the moving table 140 is moved to complete the cladding of the inner cavity of the cylinder in sequence. After one inner cavity is cladding, the position of the cylinder is adjusted so that the axis of the other inner cavity is coaxial with the main shaft 210. According to the diameter of the inner cavity after wear, the position of the adjusting seat 310 is adjusted so that the cladding nozzle 110 is adjusted to a suitable cladding rotation diameter. Then the above cladding process is repeated, so that the two inner cavities are cladding respectively, which simplifies the cladding process, reduces the frequency of manual replacement of cladding equipment, and enables targeted cladding of the inner cavity, improving the cladding quality and cladding efficiency.

[0030] Reference Figure 1 In some embodiments, a moving mechanism 400 is also provided on the frame 100. The moving mechanism 400 includes a first screw 410, a second motor 420, and a fixing plate 430. The two fixing plates 430 are fixedly mounted on the upper end of the frame 100. The two ends of the first screw 410 are rotatably mounted on the fixing plate 430. The second motor 420 is fixedly mounted on the fixing plate 430. The output shaft of the second motor 420 is connected to the first screw 410 for transmission. The moving table 140 is threadedly connected to the first screw 410. During the cladding process, when it is necessary to move along the inner cavity axis, the second motor 420 drives the first screw 410 to rotate. The first screw 410 drives the moving table 140 to move, which improves the moving accuracy of the moving table 140, reduces the cladding error of the equipment, and improves the cladding quality.

[0031] Reference Figure 3 , Figure 4 and Figure 5In some embodiments, the adjusting mechanism 300 further includes a second screw 330 and a third motor 340. The second screw 330 is rotatably mounted on the main shaft 210, and the third motor 340 is fixedly mounted on the main shaft 210. The second screw 330 is drive-connected to the output shaft of the third motor 340, and the second screw 330 is threadedly connected to the adjusting seat 310. When it is necessary to adjust the rotation diameter of the cladding nozzle 110, the third motor 340 is controlled by the control terminal to drive the second screw 330 to rotate, thereby moving the adjusting seat 310. The moving distance of the adjusting seat 310 is controlled according to the rotation angle and rotation radius of the adjusting rod 320 and the corresponding rotation angle and rotation radius of the tube body 130, thereby achieving precise control of the rotation radius of the cladding nozzle 110. This allows for adjustment based on the inner diameter of the cavity, improving the cladding quality.

[0032] Reference Figure 5 In some embodiments, the adjustment mechanism 300 further includes a distance sensor 350, which is fixedly mounted on the tube body 130. The distance sensor 350 detects the distance between the cladding nozzle 110 and the inner wall of the cavity in real time, thereby determining whether the spacing between the cladding nozzle 110 and the inner wall is adequate, improving cladding accuracy. Simultaneously, it enables the adjustment of the rotation radius of the cladding nozzle 110 based on changes in the inner cavity radius detected during the cladding process, achieving the function of simultaneous cladding and adjustment, further improving cladding quality.

[0033] Reference Figure 4 In some embodiments, the adjusting mechanism 300 further includes a telescopic cylinder 360, a guide rod 370, and a lifting platform 380. Multiple guide rods 370 are fixedly mounted on the frame 100, and the lifting platform 380 is slidably mounted on the guide rods 370. The telescopic cylinder 360 is fixedly mounted on the frame 100, and the piston rod of the telescopic cylinder 360 is fixedly connected to the bottom end of the lifting platform 380. The moving platform 140 is slidably mounted on the lifting platform 380, and the fixing plate 430 is fixedly mounted on the lifting platform 380. Different pump models have different inner diameter axis heights. By controlling the telescopic cylinder 360, the height of the lifting platform 380 is adjusted, thereby correspondingly adjusting the overall horizontal height of the moving platform 140. This ensures that the axis height of the main shaft 210 is consistent with the inner cavity axis height of the pump body, facilitating coaxial docking and improving the adaptability of the device.

[0034] Reference Figures 1 to 3In some embodiments, the rotating mechanism 200 further includes a support assembly 230, which includes a support platform 231 and a support plate 232. The support platform 231 is fixedly mounted on the frame 100 and is located at the end of the tube 130 away from the first motor 220. The support plate 232 is detachably fixedly mounted on the support platform 231. The support plate 232 has a positioning hole 233, and a connecting shaft 234 is rotatably mounted in the positioning hole 233 of the support plate 232. The end of the connecting shaft 234 away from the positioning hole 233 is detachably fixedly connected to the main shaft 210. During the preliminary preparation work, the main shaft 210 is moved into the inner cavity using the moving mechanism 400. The connecting shaft 234 is connected to the main shaft 210 via a coupling. The detachable support plate 232 is selected according to the pump body to be clad. During the cladding process, the main shaft 210 and the connecting shaft 234 rotate synchronously and coaxially, which improves the stability of the rotation of the main shaft 210 and the cladding accuracy. The connecting shaft 234 and the support plate 232 can be connected by a bearing to achieve a rotating and sliding connection, realizing simultaneous rotation and sliding.

[0035] In some embodiments, the connecting shaft 234 is a multi-segment telescopic shaft. By using the telescopic shaft 234, the sliding error of the connecting shaft 234 on the support plate 232 is reduced, making the main shaft 210 move more flexibly and improving the cladding accuracy.

[0036] Reference Figure 1 and Figure 3 In some embodiments, the frame 100 is provided with a fixing mechanism 500 for fixing and mounting the vacuum pump body. The fixing mechanism 500 includes a fixing base 510, a fixing platform 520, a clamping plate 530, and adjusting screws 540. The fixing base 510 is fixedly mounted on the upper end of the frame 100, and an adjusting groove 550 is opened on the upper end of the fixing base 510. The fixing platform 520 is slidably mounted on the fixing base 510 through the adjusting groove 550. The two clamping plates 530 are slidably mounted on the fixing platform 520. The two adjusting screws 540 are threadedly connected to the top end of the fixing platform 520, and one end of the adjusting screw 540 is rotatably connected to the clamping plate 530. By rotating the adjusting screw 540, the pump body is fixed by the clamping plates 530 at both ends. The fixing platform 520 adjusts the position of the two inner cavities by sliding, achieving rapid adjustment and improving the cladding efficiency.

[0037] Reference Figure 3 and Figure 6In some embodiments, the fixing mechanism 500 further includes a third screw 560 and a fourth motor 570. The third screw 560 is rotatably mounted on the fixed base 510 at both ends and is threadedly connected to the bottom of the fixed platform 520. The fourth motor 570 is fixedly mounted on one end of the fixed base 510, and its output shaft is drively connected to the third screw 560. By using the fourth motor 570 to drive the third screw 560 to rotate, the fixed platform 520 can be electrically moved, improving the operational flexibility and movement accuracy of the equipment.

[0038] The implementation principle of a laser cladding device for screw vacuum pump bodies in this embodiment of the invention is as follows: By precisely controlling the displacement of the adjusting seat 310, the rotation radius and pitch angle of the cladding nozzle 110 are dynamically adjusted, enabling a single cladding head to quickly adapt to the different sizes and wear profiles of the two inner cavities. Targeted cladding can be completed without changing equipment, significantly improving efficiency and quality while maintaining flexibility. Furthermore, the entire system, through the coordinated action of a high-precision axial feed mechanism, a remote support structure, and a rapid workpiece centering fixture, ensures the motion accuracy and stability of the cladding head in three-dimensional space and simplifies the workpiece clamping process. This comprehensively improves the accuracy, stability, and automation of the cladding process, ultimately achieving high-quality, high-efficiency pump body re-repair.

[0039] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A laser cladding device for screw vacuum pump bodies, characterized in that: The device includes a frame (100), a cladding nozzle (110), and a tube body (130), with the cladding nozzle (110) mounted on the tube body (130). It also includes a moving platform (140), a rotating mechanism (200), and an adjusting mechanism (300). The rotating mechanism (200) includes a main shaft (210) and a first motor (220). The moving platform (140) is slidably mounted on the frame (100), one end of the main shaft (210) is rotatably mounted on the moving platform (140), and the first motor (220) is fixedly mounted on the moving platform (140). The main shaft (210) is connected to the output shaft of the first motor (220), and one end of the tube body (130) is hinged to one end of the main shaft (210). The adjustment mechanism (300) includes an adjustment seat (310) and an adjustment rod (320). The adjustment seat (310) is slidably mounted on the main shaft (210). The first end of the adjustment rod (320) is hinged to the adjustment seat (310), and the second end of the adjustment rod (320) is hinged to the tube body (130) near the end of the cladding nozzle (110).

2. The laser cladding equipment for screw vacuum pump bodies according to claim 1, characterized in that: The frame (100) is also provided with a moving mechanism (400), which includes a first screw (410), a second motor (420) and a fixing plate (430). The two fixing plates (430) are fixedly installed on the upper end of the frame (100). The two ends of the first screw (410) are rotatably installed on the fixing plate (430). The second motor (420) is fixedly installed on the fixing plate (430). The output shaft of the second motor (420) is connected to the first screw (410) in a transmission connection. The moving table (140) is threadedly connected to the first screw (410).

3. The laser cladding equipment for screw vacuum pump bodies according to claim 2, characterized in that: The adjustment mechanism (300) further includes a second screw (330) and a third motor (340). The second screw (330) is rotatably mounted on the main shaft (210), and the third motor (340) is fixedly mounted on the main shaft (210). The second screw (330) is connected to the output shaft of the third motor (340) for transmission, and the second screw (330) is threadedly connected to the adjustment seat (310).

4. The laser cladding equipment for screw vacuum pump bodies according to claim 3, characterized in that: The adjustment mechanism (300) also includes a distance sensor (350), which is fixedly mounted on the tube body (130).

5. The laser cladding equipment for screw vacuum pump bodies according to claim 3, characterized in that: The adjustment mechanism (300) further includes a telescopic cylinder (360), a guide rod (370), and a lifting platform (380). Multiple guide rods (370) are fixedly installed on the frame (100). The lifting platform (380) is slidably disposed on the guide rods (370). The telescopic cylinder (360) is fixedly installed on the frame (100). The piston rod of the telescopic cylinder (360) is fixedly connected to the bottom end of the lifting platform (380). The moving platform (140) is slidably disposed on the lifting platform (380). The fixing plate (430) is fixedly installed on the lifting platform (380).

6. The laser cladding equipment for screw vacuum pump bodies according to any one of claims 1-4, characterized in that: The rotating mechanism (200) further includes a support assembly (230), which includes a support platform (231) and a support plate (232). The support platform (231) is fixedly installed on the frame (100) and is located at the end of the tube (130) away from the first motor (220). The support plate (232) is detachably fixedly installed on the support platform (231). The support plate (232) has a positioning hole (233) and a connecting shaft (234) is rotatably installed in the positioning hole (233) of the support plate (232). The end of the connecting shaft (234) away from the positioning hole (233) is detachably fixedly connected to the main shaft (210).

7. The laser cladding equipment for screw vacuum pump bodies according to claim 6, characterized in that: The connecting shaft (234) is a multi-segment telescopic shaft.

8. The laser cladding equipment for screw vacuum pump bodies according to any one of claims 1-4, characterized in that: The frame (100) is provided with a fixing mechanism (500) for fixing and installing the vacuum pump body. The fixing mechanism (500) includes a fixing seat (510), a fixing platform (520), a clamping plate (530) and an adjusting screw (540). The fixing seat (510) is fixedly installed on the upper end of the frame (100). An adjusting groove (550) is opened on the upper end of the fixing seat (510). The fixing platform (520) is slidably disposed on the fixing seat (510) through the adjusting groove (550). The two clamping plates (530) are slidably disposed on the fixing platform (520) relative to each other. The two adjusting screws (540) are threadedly connected to the top end of the fixing platform (520). One end of the adjusting screw (540) is rotatably connected to the clamping plate (530).

9. The laser cladding equipment for screw vacuum pump bodies according to claim 8, characterized in that: The fixing mechanism (500) further includes a third screw (560) and a fourth motor (570). The two ends of the third screw (560) are rotatably mounted on the fixing base (510). The third screw (560) is threadedly connected to the bottom of the fixing platform (520). The fourth motor (570) is fixedly mounted on one end of the fixing base (510). The output shaft of the fourth motor (570) is connected to the third screw (560) in a transmission manner.

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