A clamping device for machining of a water pump housing and a method of using the same

Abstract

This invention relates to the field of water pump housing processing technology, and more particularly to a clamping device and its method for processing water pump housings. The device includes a mounting platform with at least two bottom-side clamping chuck assemblies positioned above it. By configuring a chuck drive assembly and a downward-pressing drive assembly, and utilizing a gear plate and toothed belt for transmission connection between them, the bottom-side clamping chuck assemblies can move synchronously and radially in the circumferential direction after the drive motor starts. This allows for multi-point, uniform radial clamping of the pump housing's bottom outer side from below, while a fixing plate simultaneously presses down from above, achieving axial positioning of the pump housing. Furthermore, each mounting plate in the bottom-side clamping chuck assembly has two clamping teeth that form a stable engagement with the outer wall of the pump housing, significantly improving the pump housing's resistance to torsion and vibration during processing, thereby effectively improving processing accuracy and surface quality.

Description

Technical Field

[0001] This invention relates to the field of water pump housing processing technology, and specifically to a clamping device for processing water pump housings and its usage method. Background Technology

[0002] The pump casing (hereinafter referred to as "pump casing") is a key pressure-bearing and flow-through component of a water pump. It typically has an irregular shape, multiple flange interfaces (inlet and outlet), and non-uniform wall thickness distribution. During machining, the base plane, flange end faces, threaded holes, sealing grooves, and bearing holes of the pump casing require turning, milling, drilling, and reaming operations. These machining processes place high demands on the accuracy, stability, and repeatability of clamping and positioning.

[0003] Currently, the industry mainly uses the following methods for machining and clamping water pump casings: The pump casing is placed directly on the machine tool table or a simple shim, and then clamped from above or to the side using several sets of clamping plates, T-bolts, and nuts. This method is simple in structure and low in cost, but it has obvious shortcomings: the number of clamping points is limited, and the clamping force is unidirectional, making it difficult to resist the cutting forces, vibrations, and torques generated during processing. This can easily cause the pump casing to slip, deflect, or even fly off, posing a safety hazard.

[0004] For small pump casings, a three-jaw chuck or bench vise is sometimes used for clamping. However, pump casings are mostly non-rotating bodies, making it difficult for the jaws to form a stable fit. Custom-made soft jaws or irregularly shaped jaws are often required, and readjustment is necessary every time the type is changed, resulting in low efficiency.

[0005] Some companies use hydraulically or pneumatically driven unidirectional clamping devices (such as top-pressing cylinders and side-pushing cylinders). While these clamps can achieve semi-automation, the independent control of each clamping unit easily leads to uneven distribution of clamping force—for example, excessive top clamping force causing shell deformation, or insufficient side clamping force causing shell to twist during processing. More importantly, in existing devices, the top pressing and circumferential clamping actions often need to be operated or controlled separately, making synchronous linkage impossible, resulting in long auxiliary times and cumbersome operation.

[0006] Most existing fixtures do not adequately consider the spatial angular relationship between the pump casing's inlet, outlet, and base. The pump casing often requires a flange face or base face as a positioning reference, but existing simple fixtures cannot provide accurate reference positioning, often relying on manual alignment by the operator, resulting in poor machining consistency. Summary of the Invention

[0007] The purpose of this invention is to provide a clamping device for machining water pump housings and a method for using the same, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A clamping device for machining a water pump housing includes an installation platform. At least two bottom-side clamping chuck assemblies are arranged above the installation platform. A chuck drive assembly for moving the bottom-side clamping chuck assemblies is installed inside the installation platform. A drive motor is arranged on one side of the chuck drive assembly. A placement plate is placed in the middle of the bottom-side clamping chuck assembly. A pump housing is placed above the placement plate. A fixing plate is arranged directly above the pump housing. A downward driving assembly is arranged above the fixing plate. A gear disk is arranged on one side of both the downward driving assembly and the chuck drive assembly. A support rod is fixedly connected to the outer wall of the upper gear disk. A toothed belt is meshed with the outer wall of the gear disk. The downward driving assembly is pulsatorically connected to the chuck drive assembly.

[0009] Preferably, the chuck drive assembly includes a drive worm gear located on one side of the output end of the drive motor. Both ends of the drive worm gear are fixedly connected to connecting shafts. The front connecting shaft is fixedly connected to the output end of the drive motor via a coupling. A drive worm wheel is drivenly connected to the left side of the drive worm gear, and the bottom end of the drive worm wheel is rotatably connected to the mounting platform.

[0010] Preferably, the chuck drive assembly further includes a second drive gear, which is fixedly installed above the drive worm gear. A third drive gear is meshed with one side of the second drive gear. The diameter of the third drive gear is larger than that of the second drive gear. A drive disk is fixedly connected above the third drive gear. Three arc-shaped grooves are formed through the outer wall of the drive disk. The bottom end of the third drive gear is rotatably connected to the mounting platform. A drive wheel is installed inside the arc-shaped grooves. The outer wall of the drive wheel abuts against the inner wall of the arc-shaped grooves. A connecting frame is rotatably connected above the drive wheel. A movable groove is formed at the location corresponding to the mounting platform and the connecting frame. An auxiliary slider is fixedly connected to the outer wall of the connecting frame.

[0011] Preferably, the chuck drive assembly further includes a limiting triangular disk fixedly installed inside the installation platform. The limiting triangular disk is positioned directly above the drive disk. The outer wall of the limiting triangular disk has three rectangular limiting slots. The connecting frame passes through the limiting slots of the limiting triangular disk and extends upward. The top of the connecting frame is connected to the bottom side clamping chuck assembly.

[0012] Preferably, the bottom-side clamping chuck assembly includes a mounting plate and clamping teeth. There are three mounting plates in total. Each mounting plate has two clamping teeth rotatably connected inside. When in the clamping state, the clamping teeth abut against the outer wall of the pump housing. The mounting plate is rotatably mounted on the top of the connecting frame, and the placement plate is located in the middle of the three mounting plates.

[0013] Preferably, the outer walls of the shafts at both ends of the drive worm are rotatably connected to support blocks, the middle of the support blocks is a bearing, and the connecting shaft on the rear side is fixedly connected to the outer wall of the gear disk below.

[0014] Preferably, the downward driving assembly includes a fixed rod, which is fixedly installed on the outer wall above the fixed plate. A U-shaped mounting rod is fixedly connected to the top of the fixed rod. A limiting sleeve is sleeved on the outer wall of the mounting rod. Two supporting side rods are fixedly connected to the outer wall of the limiting sleeve. The bottom ends of the supporting side rods are fixedly installed above the mounting platform. A cross groove is formed through the middle of the limiting sleeve. A cross limiting block is fixedly welded to the mounting rod at the corresponding position of the limiting sleeve. A rack is fixedly connected to the outer wall of the rear end of the mounting rod. A first driving gear is meshed with the rear side of the rack. The first driving gear is fixed to the outer wall of the right side of the upper gear disk.

[0015] The present invention also provides a method of using a clamping device for machining a water pump housing, comprising the following steps: S1: Place the pump casing to be processed on the placement plate, and make the outlet of the pump casing face the arc-shaped side of the installation platform; S2: Start the drive motor. The drive motor drives the drive worm to rotate through the connecting shaft, and at the same time, the connecting shaft on the rear side drives the gear disk below to rotate synchronously. S3: The drive worm drives the drive worm wheel to rotate, and the drive worm wheel causes the drive disk to rotate through the second drive gear and the third drive gear. The arc groove on the drive disk pushes the connecting frame to move centripetally along the limiting groove of the limiting triangular disk through the drive wheel. The connecting frame drives the bottom clamping chuck assembly to move centripetally synchronously until the chuck teeth on the mounting disk abut against the outer wall of the pump casing, completing the circumferential clamping. S4: The lower gear disk drives the upper gear disk to rotate synchronously through the toothed belt. The upper gear disk drives the first drive gear to rotate. The first drive gear drives the rack to move downward. The rack drives the fixed plate to move downward through the mounting rod and the fixing rod in sequence until the fixed plate presses against the upper end face of the pump housing, completing the axial pressing. S5: Turn off the drive motor, maintain the clamping state by utilizing the self-locking characteristics of the drive worm and drive worm wheel, and then perform cutting machining on the pump casing.

[0016] The beneficial effects of this invention are as follows: 1. This invention, by setting up a chuck drive assembly and a downward pressure drive assembly, and utilizing a gear plate and toothed belt to achieve the transmission connection between the two, allows the bottom-side clamping chuck assembly to move synchronously and centripetally in the circumferential direction after the drive motor starts. This provides multi-point, uniform radial clamping of the bottom outer side of the pump casing from below, while the fixing plate presses down synchronously from above, achieving axial limitation of the pump casing. Furthermore, each mounting plate in the bottom-side clamping chuck assembly has two clamping teeth, which can form a stable engagement with the outer wall of the pump casing, significantly improving the pump casing's torsional resistance and vibration resistance during processing, thereby effectively improving processing accuracy and surface quality.

[0017] 2. This invention employs a structure combining a driving worm gear, a driving worm wheel, multi-stage gears, and an arc-groove driving disc to achieve synchronous driving of the three connecting frames. The movement is smooth and self-locking, preventing loosening due to vibration during clamping. Simultaneously, the cooperation between the limiting triangular disc and the auxiliary slider ensures the connecting frames move in a straight line. The clamping position of the teeth is precisely adjustable, adapting to pump housings of different diameters and contours. No complex fixtures need to be replaced during model changes, significantly improving the versatility and efficiency of the device.

[0018] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 for Figure 1 Another perspective structural diagram; Figure 3 This is a schematic diagram of the downward drive component structure of the present invention; Figure 4 This is a three-dimensional structural diagram of the present invention (the pump casing has been removed). Figure 5 This is a three-dimensional structural diagram of the chuck drive assembly of the present invention; Figure 6 for Figure 5 Another perspective structural diagram; Figure 7 This is a three-dimensional structural diagram of the bottom-side clamping chuck assembly of the present invention.

[0020] In the picture: 1. Mounting platform; 2. Bottom-side clamping chuck assembly; 201. Mounting disc; 202. Clamping teeth; 3. Fixing plate; 4. Downward drive assembly; 401. Fixing rod; 402. Mounting rod; 403. Cross limit block; 404. Limiting sleeve; 405. Rack; 406. First drive gear; 5. Support side rod; 6. Support main rod; 7. Gear disc; 8. Toothed belt; 9. Drive motor; 10. Support block; 11. Chuck drive assembly; 1101. Drive worm gear; 1102. Connecting shaft; 1103. Drive worm wheel; 1104. Second drive gear; 1105. Third drive gear; 1106. Drive disc; 1107. Limiting triangular disc; 1108. Connecting frame; 1109. Arc groove; 1110. Drive wheel; 1111. Auxiliary slider; 12. Placement disc; 13. Movable groove; 14. Pump housing. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0022] Please see Figures 1 to 7 A clamping device for processing water pump housings includes an installation platform 1, at least two bottom-side clamping chuck assemblies 2 are arranged above the installation platform 1, a chuck drive assembly 11 for moving the bottom-side clamping chuck assemblies 2 is installed inside the installation platform 1, a drive motor 9 is arranged on one side of the chuck drive assembly 11, a placement plate 12 is placed in the middle of the bottom-side clamping chuck assembly 2, a pump housing 14 is placed above the placement plate 12, a fixing plate 3 is arranged directly above the pump housing 14, a downward drive assembly 4 is arranged above the fixing plate 3, a gear disk 7 is arranged on one side of both the downward drive assembly 4 and the chuck drive assembly 11, a support rod 6 is fixedly connected to the outer wall of the upper gear disk 7, a toothed belt 8 is meshed with the outer wall of the gear disk 7, and the downward drive assembly 4 is connected to the chuck drive assembly 11 in a transmission connection. This invention connects the bottom-side clamping chuck assembly 2 above the mounting platform 1 with the chuck drive assembly 11 inside the mounting platform 1, driven by a drive motor 9. A gear disk 7 and a toothed belt 8 are also provided on one side of the downward-pressing drive assembly 4 and the chuck drive assembly 11 for transmission. When the drive motor 9 starts, the chuck drive assembly 11 drives the bottom-side clamping chuck assembly 2 in a centripetal linear motion, moving from the outside inwards towards the outer wall of the pump housing 14. Simultaneously, the downward-pressing drive assembly 4, through the synchronous transmission of the toothed belt 8, drives the fixing plate 3 to move vertically downwards. These two motion trajectories, "circumferential centripetal movement" and "axial downward-pressing movement," are completed synchronously under a single power source, achieving multi-directional linkage clamping of the pump housing 14. Compared to existing technologies where the upper and lower clamping actions are separate and require separate operation, this invention avoids problems such as improper clamping sequence or inconsistent clamping forces, significantly improving clamping stability and processing accuracy, while simplifying the operation process.

[0023] like Figure 5-6 As shown, the chuck drive assembly 11 includes a drive worm gear 1101, which is located on one side of the output end of the drive motor 9. Both ends of the drive worm gear 1101 are fixedly connected to connecting shafts 1102. The front connecting shaft 1102 is fixedly connected to the output end of the drive motor 9 via a coupling. A drive worm wheel 1103 is connected to the left side of the drive worm gear 1101, and the bottom end of the drive worm wheel 1103 is rotatably connected to the mounting platform 1. The chuck drive assembly 11 also includes a second drive gear 1104, which is fixedly installed directly above the drive worm wheel 1103. A third drive gear 1 is meshed with one side of the second drive gear 1104. 105. The diameter of the third drive gear 1105 is larger than that of the second drive gear 1104. A drive disk 1106 is fixedly connected above the third drive gear 1105. Three arc-shaped grooves 1109 are opened through the outer wall of the drive disk 1106. The bottom end of the third drive gear 1105 is rotatably connected to the mounting platform 1. A drive wheel 1110 is installed inside the arc-shaped groove 1109. The outer wall of the drive wheel 1110 abuts against the inner wall of the arc-shaped groove 1109. A connecting frame 1108 is rotatably connected above the drive wheel 1110. A movable groove 13 is opened at the corresponding position of the mounting platform 1 and the connecting frame 1108. An auxiliary slider 1111 is fixedly connected to the outer wall of the connecting frame 1108.

[0024] The specific implementation is as follows: When the drive motor 9 drives the front connecting shaft 1102 to rotate, the drive worm 1101 rotates around its own axis, and drives the drive worm wheel 1103, which meshes with it, to rotate around its vertical axis. This worm gear transmission pair has the following beneficial effects: First, by utilizing the large reduction ratio characteristics of the worm 1101 and the worm wheel 1103, the high-speed, low-torque input of the drive motor 9 can be converted into a low-speed, high-torque output, thereby providing sufficient and stable clamping force; Second, the worm gear mechanism has a self-locking characteristic. When the drive motor 9 stops, even if subjected to machining vibration or cutting reaction force, the drive worm wheel 1103 cannot drive the drive worm 1101 in the opposite direction, thus maintaining the clamping state and preventing loosening, improving machining safety. When the drive worm wheel 1103 rotates, the second drive gear 1104 fixed above it rotates synchronously, and through meshing, drives the larger diameter third drive gear 1105 to rotate in the opposite direction. The third drive gear 1105 drives the drive disk 1106 to rotate coaxially, and the three arc-shaped grooves 1109 on the drive disk 1106 rotate accordingly. Since the drive wheel 1110 is simultaneously subjected to the thrust from the inner wall of the arc-shaped groove 1109 and the constraint of the connecting frame 1108, and the connecting frame 1108 is restricted by the movable groove 13 and the auxiliary slider 1111 to only move radially, when the drive disk 1106 rotates, the curvature change of the arc-shaped groove 1109 forces the drive wheel 1110 to roll along the arc-shaped groove 1109, driving the connecting frame 1108 to perform precise centripetal linear motion. This "rotation → translation" motion conversion structure achieves synchronous, constant-speed, and equidistant movement of the three connecting frames 1108, ensuring the centering and clamping of the pump housing 14 and avoiding eccentricity or uneven clamping force. Simultaneously, the diameter ratio between the second drive gear 1104 and the third drive gear 1105 further amplifies the torque and enhances the clamping force.

[0025] like Figure 5-6 As shown, the chuck drive assembly 11 also includes a limiting triangular disk 1107 fixedly installed inside the installation platform 1. The limiting triangular disk 1107 is located directly above the drive disk 1106. The outer wall of the limiting triangular disk 1107 has three rectangular limiting grooves. The connecting frame 1108 passes through the limiting grooves of the limiting triangular disk 1107 and extends upward. The top of the connecting frame 1108 is connected to the bottom clamping chuck assembly 2. The arc groove 1109 on the drive disk 1106 provides radial driving force, while the limiting triangular disk 1107 provides radial constraint force. The combined effect of the two ensures that the movement trajectory of the connecting frame 1108 is strictly limited to a pure linear movement, that is, along the length direction of the limiting groove, thereby ensuring that the clamping surface of the bottom clamping chuck assembly 2 is always parallel to the corresponding outer wall of the pump housing 14, improving the clamping fit and stability.

[0026] like Figure 6As shown, the bottom clamping chuck assembly 2 includes a mounting plate 201 and clamping teeth 202. There are three mounting plates 201 in total. Each mounting plate 201 has two clamping teeth 202 rotatably connected inside. The clamping teeth 202 in the clamping state abut against the outer wall of the pump housing 14. The mounting plates 201 are rotatably mounted on the top of the connecting frame 1108. The placement plate 12 is located in the middle of the three mounting plates 201. The specific implementation is as follows: When the connecting frame 1108 drives the mounting plate 201 in a centripetal linear motion, the two locking teeth 202 inside the mounting plate 201 move as a whole with the mounting plate 201, eventually abutting against the outer wall of the pump housing 14. Each mounting plate 201 has two locking teeth 202, which increases the number of contact points with the outer wall of the pump housing 14 compared to a single locking tooth 202, forming a stable two-point contact engagement structure, effectively preventing the pump housing 14 from rotating in the circumferential direction. At the same time, the locking teeth 202 are rotatably connected to the mounting plate 201, allowing the locking teeth 202 to automatically adapt to local contour changes on the outer wall of the pump housing 14, such as the slight unevenness of the casting blank surface, achieving adaptive fitting and avoiding rigid collision damage to the workpiece. The three mounting plates 201 are evenly distributed circumferentially and move synchronously centripetally from three directions, achieving centering and clamping of the pump housing 14 and ensuring the repeatability of the machining datum.

[0027] like Figure 5 As shown, support blocks 10 are rotatably connected to the outer walls of the shafts at both ends of the drive worm gear 1101. A bearing is located in the middle of each support block 10. The rear connecting shaft 1102 is fixedly connected to the outer wall of the lower gear disk 7. The support blocks 10 provide stable radial support for the drive worm gear 1101, reducing deflection and vibration during long shaft rotation and improving transmission smoothness. Simultaneously, the rear connecting shaft 1102 directly serves as the drive shaft of the lower gear disk 7, eliminating the need for additional transmission components, resulting in a compact structure and direct power transmission. The lower gear disk 7 transmits rotational motion to the upper gear disk 7 via a toothed belt 8, thereby driving the downward drive assembly 4.

[0028] like Figure 1-4 As shown, the downward drive assembly 4 includes a fixed rod 401, which is fixedly installed on the outer wall above the fixed plate 3. The top of the fixed rod 401 is fixedly connected to a mounting rod 402 with a "U"-shaped structure. A limiting sleeve 404 is sleeved on the outer wall of the mounting rod 402. Two support side rods 5 are fixedly connected to the outer wall of the limiting sleeve 404. The bottom of the support side rods 5 is fixedly installed above the mounting platform 1. A cross groove is opened through the middle of the limiting sleeve 404. A cross limiting block 403 is fixedly welded to the mounting rod 402 and the limiting sleeve 404 respectively. A rack 405 is fixedly connected to the outer wall of the rear end of the mounting rod 402. A first drive gear 406 is meshed with the rear side of the rack 405. The first drive gear 406 is fixed to the outer wall of the right side of the upper gear disk 7.

[0029] The specific implementation is as follows: When the upper gear disk 7 rotates, the first drive gear 406 rotates accordingly, driving the rack 405 meshing with it to move vertically. The rack 405 is fixed to the rear end of the mounting rod 402, and the front end of the mounting rod 402 is connected to the fixing plate 3 through the fixing rod 401. A cross-shaped limiting block 403 is welded onto the mounting rod 402. The cross-shaped limiting block 403 slides in the cross groove in the middle of the limiting sleeve 404, thereby restricting the rotational freedom of the mounting rod 402, so that it can only perform precise vertical lifting and lowering movements, that is, retain only one translational degree of freedom. This movement trajectory ensures that the fixing plate 3 always maintains a horizontal posture when it is pressed down, and evenly presses the upper end face of the pump housing 14 to prevent the pump housing 14 from tilting or locally deforming due to bias pressure. At the same time, the "U"-shaped structure avoids the interference area above the pump housing 14, which facilitates the handling of workpieces.

[0030] A method of using a clamping device for machining a water pump housing includes the following steps: S1: Place the pump casing 14 to be processed on the placement plate 12, and make the outlet of the pump casing 14 face the arc-shaped side of the mounting platform 1. S2: Start the drive motor 9. The drive motor 9 drives the drive worm 1101 to rotate through the connecting shaft 1102. At the same time, the connecting shaft 1102 on the rear side drives the gear disk 7 below to rotate synchronously. S3: The drive worm 1101 drives the drive worm wheel 1103 to rotate. The drive worm wheel 1103 causes the drive disk 1106 to rotate through the second drive gear 1104 and the third drive gear 1105. The arc groove 1109 on the drive disk 1106 pushes the connecting frame 1108 to move centripetally along the limiting groove of the limiting triangular disk 1107 through the drive wheel 1110. The connecting frame 1108 drives the bottom clamping chuck assembly 2 to move centripetally synchronously until the cleaving teeth 202 on the mounting disk 201 abut against the outer wall of the pump housing 14, completing the circumferential clamping. S4: The lower gear disk 7 drives the upper gear disk 7 to rotate synchronously through the toothed belt 8. The upper gear disk 7 drives the first drive gear 406 to rotate. The first drive gear 406 drives the rack 405 to move downward. The rack 405 drives the fixing plate 3 to move downward through the mounting rod 402 and the fixing rod 401 in sequence until the fixing plate 3 presses against the upper end face of the pump housing 14, completing the axial pressing. S5: Turn off the drive motor 9, use the self-locking characteristics of the drive worm 1101 and drive worm wheel 1103 to maintain the clamping state, and then perform cutting machining on the pump housing 14.

[0031] A clamping device for machining water pump housings and its usage method are disclosed. The working process is as follows: First, install the clamping device in the designated position on the machine tool. The operator places the pump casing 14 on top of the placement plate 12, with the water outlet of the placement plate 12 facing the arc-shaped side of the installation platform 1. Then, the operator can turn on the power of the drive motor 9. The drive motor 9 causes the drive worm gear 1101 to start rotating through the connecting shaft 1102. At this time, the connecting shaft 1102 at the rear end also causes the gear disk 7 below to rotate synchronously. After the drive worm 1101 rotates, it drives the drive worm wheel 1103 to rotate synchronously. The drive worm wheel 1103 drives the third drive gear 1105 to rotate through the second drive gear 1104. The third drive gear 1105 drives the drive disk 1106 above to rotate synchronously. The drive wheel 1110 inside the drive disk 1106 is limited by the cooperation of the limiting triangular disk 1107 and the auxiliary slider 1111, which causes the three connecting frames 1108 to move toward the axis of the drive disk 1106. The connecting frames 1108 drive the bottom clamping chuck assembly 2 to move synchronously. The chuck teeth 202 of the mounting disk 201 then slowly abut against the outer wall of the pump housing 14, realizing the circumferential clamping engagement of the pump housing 14. When the lower gear disk 7 rotates, it drives the upper gear disk 7 to rotate synchronously through the toothed belt 8. At this time, the upper gear disk 7 can drive the first drive gear 406 to rotate synchronously. When the first drive gear 406 moves, it can cause the rack 405 on one side to move downward. The rack 405 then causes the fixed rod 401 to move downward synchronously through the mounting rod 402. Finally, the fixed rod 401 drives the fixed plate 3 to limit the upper part of the pump housing 14. When the front end of the mounting rod 402 moves downward, the limiting sleeve 404 can axially limit the cross limiting block 403 on the outer wall of the mounting rod 402 to prevent displacement. Therefore, the bottom clamping chuck assembly 2 and the fixing plate 3 simultaneously perform the limiting clamping work on the pump housing 14.

[0032] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of the present invention, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A clamping device for machining a water pump housing, characterized by include: Installation platform (1); At least two bottom-side clamping chuck assemblies (2) are disposed above the mounting platform (1); The chuck drive assembly (11) is installed inside the mounting platform (1) and is used to drive the bottom-side clamping chuck assembly (2) to move. A drive motor (9) is located on one side of the chuck drive assembly (11) and is used to provide power; A placement tray (12) is disposed in the middle of the bottom side clamping chuck assembly (2); Pump housing (14) is placed above the placement plate (12); A fixing plate (3) is set directly above the pump housing (14) to axially limit the pump housing (14); A downward driving component (4) is disposed above the fixed plate (3) and is used to drive the fixed plate (3) to rise and fall; Two gear disks (7) are respectively disposed on one side of the pressing drive assembly (4) and one side of the chuck drive assembly (11); The main support rod (6) is fixedly connected to the outer wall of the gear disk (7) located above; A toothed belt (8) is meshed with the outer walls of the two gear discs (7); The downward drive assembly (4) is connected to the chuck drive assembly (11) via the toothed belt (8) and the two gear disks (7).

2. A clamping device for machining a water pump housing according to claim 1, characterized in that: The chuck drive assembly (11) includes a drive worm (1101), which is located on one side of the output end of the drive motor (9). Both ends of the drive worm (1101) are fixedly connected to a connecting shaft (1102). The front connecting shaft (1102) is fixedly connected to the output end of the drive motor (9) through a coupling. The left side of the drive worm (1101) is connected to a drive worm wheel (1103), and the bottom end of the drive worm wheel (1103) is rotatably connected to the mounting platform (1).

3. A machining fixture for a water pump housing as set forth in claim 2, characterized in that: The chuck drive assembly (11) further includes a second drive gear (1104), which is fixedly installed above the drive worm gear (1103). A third drive gear (1105) is meshed with one side of the second drive gear (1104). The diameter of the third drive gear (1105) is larger than that of the second drive gear (1104). A drive disk (1106) is fixedly connected above the third drive gear (1105). Three arc-shaped grooves are formed through the outer wall of the drive disk (1106). 1109), the bottom end of the third drive gear (1105) is rotatably connected to the mounting platform (1), a drive wheel (1110) is installed inside the arc groove (1109), the outer wall of the drive wheel (1110) abuts against the inner wall of the arc groove (1109), a connecting frame (1108) is rotatably connected above the drive wheel (1110), an movable groove (13) is opened at the corresponding position of the mounting platform (1) and the connecting frame (1108), and an auxiliary slider (1111) is fixedly connected to the outer wall of the connecting frame (1108).

4. A machining fixture for a water pump housing as set forth in claim 3, characterized in that: The chuck drive assembly (11) also includes a limiting triangular disk (1107) fixedly installed inside the installation platform (1). The limiting triangular disk (1107) is located directly above the drive disk (1106). The outer wall of the limiting triangular disk (1107) has three rectangular limiting slots. The connecting frame (1108) extends through the limiting slots of the limiting triangular disk (1107) and upwards. The top of the connecting frame (1108) is connected to the bottom side clamping chuck assembly (2).

5. The clamping device for machining a water pump housing as described in claim 4, characterized in that: The bottom-side clamping chuck assembly (2) includes a mounting plate (201) and clamping teeth (202). There are three mounting plates (201). Each mounting plate (201) has two clamping teeth (202) rotatably connected inside. When in the clamping state, the clamping teeth (202) abut against the outer wall of the pump housing (14). The mounting plate (201) is rotatably mounted on the top of the connecting frame (1108). The placement plate (12) is located in the middle of the three mounting plates (201).

6. The clamping device for machining a water pump housing as described in claim 5, characterized in that: The drive worm (1101) has a support block (10) rotatably connected to the outer wall of the shaft at both ends. The support block (10) has a bearing in the middle and the connecting shaft (1102) on the rear side is fixedly connected to the outer wall of the gear disk (7) below.

7. A clamping device for machining a water pump housing as described in claim 6, characterized in that: The downward driving assembly (4) includes a fixed rod (401), which is fixedly installed on the upper outer wall of the fixed plate (3). The top end of the fixed rod (401) is fixedly connected to a mounting rod (402) with a "U" shaped structure. A limiting sleeve (404) is sleeved on the outer wall of the mounting rod (402). Two supporting side rods (5) are fixedly connected to the outer wall of the limiting sleeve (404). The bottom end of the supporting side rods (5) is fixedly installed above the mounting platform (1). A cross groove is opened through the middle of the limiting sleeve (404). A cross limiting block (403) is fixedly welded to the mounting rod (402) and the limiting sleeve (404). A rack (405) is fixedly connected to the outer wall of the rear end of the mounting rod (402). A first driving gear (406) is meshed with the rear side of the rack (405). The first driving gear (406) is fixed to the right outer wall of the gear disk (7) above.

8. A method of using a clamping device for machining a water pump housing according to any one of claims 1 to 7, characterized in that, Includes the following steps: S1: Place the pump casing (14) to be processed on the placement plate (12) and make the outlet of the pump casing (14) face the arc side of the installation platform (1); S2: Start the drive motor (9). The drive motor (9) drives the drive worm (1101) to rotate through the connecting shaft (1102). At the same time, the connecting shaft (1102) on the rear side drives the gear disk (7) below to rotate synchronously. S3: At the same time, the drive worm (1101) drives the drive worm wheel (1103) to rotate. The drive worm wheel (1103) causes the drive disk (1106) to rotate through the second drive gear (1104) and the third drive gear (1105). The arc groove (1109) on the drive disk (1106) pushes the connecting frame (1108) to move centripetally along the limiting groove of the limiting triangular disk (1107) through the drive wheel (1110). The connecting frame (1108) drives the bottom clamping chuck assembly (2) to move centripetally synchronously until the chuck teeth (202) on the mounting disk (201) abut against the outer wall of the pump housing (14) to complete the circumferential clamping. S4: The lower gear disk (7) drives the upper gear disk (7) to rotate synchronously through the toothed belt (8). The upper gear disk (7) drives the first drive gear (406) to rotate. The first drive gear (406) drives the rack (405) to move downward. The rack (405) drives the fixing plate (3) to move downward through the mounting rod (402) and the fixing rod (401) in sequence until the fixing plate (3) presses against the upper end face of the pump housing (14) to complete the axial pressing. S5: Turn off the drive motor (9), use the self-locking characteristics of the drive worm (1101) and drive worm wheel (1103) to maintain the clamping state, and then perform cutting on the pump casing (14).

Images