A machining center and an assembly method of a water pump

Abstract

This invention relates to the field of water pump assembly technology, specifically to a machining center and a method for assembling a water pump. The machining center includes a workbench; clamping devices, with several clamping devices on the workbench for clamping water channels; a pressing device, movably mounted on the workbench for pressing a water pump stacked on the water channels, the water channels and the water pump being connected by multiple bolts; and a bolt tightening device, movably mounted on the workbench for tightening the bolts. The bolt tightening device automatically tightens the connecting bolts between the water pump and the water channels. Before tightening, the clamping devices clamp the water channels, and the pressing device presses the water pump on the water channels, preventing displacement of the water channels and water pump during the tightening process. This method features a high degree of automation, improved processing efficiency, reduced processing cycle, and consistent tightening of each bolt, ensuring the quality of the finished water pump.

Description

Technical Field

[0001] This invention relates to the field of water pump assembly technology, specifically to a machining center and a method for assembling a water pump. Background Technology

[0002] As a core component of the water pump, the water channel is mainly used to connect external water pipes. Before leaving the factory, the water channel and the water pump need to be assembled.

[0003] Currently, the assembly of water channels and pumps is mainly done manually. This involves aligning the water channels and pumps manually, inserting connecting bolts, and then tightening them with manual tools to complete the assembly. However, manual assembly is inefficient, has a long processing cycle, and cannot ensure the consistency of bolt tightening, resulting in inconsistent quality of the finished pump. Summary of the Invention

[0004] The purpose of this invention is to propose an assembly method for a machining center and a water pump, which aims to solve the technical problems of low efficiency and inability to ensure the consistency of the tightening degree of each bolt in the existing manual assembly method of water channels and water pumps.

[0005] To achieve the above objectives, the present invention proposes a machining center, including a worktable;

[0006] Clamping device: The worktable is provided with several clamping devices, which are used to clamp the waterway;

[0007] A clamping device is movably mounted on the workbench. The clamping device is used to clamp the water pumps stacked on the water channel. The water channel and the water pumps are connected by multiple bolts.

[0008] A bolt tightening device is movably mounted on the workbench, and the bolt tightening device is used to tighten the bolt.

[0009] Preferably, the pressing device includes a base, a first guide rail, a mounting bracket, a pressure head, a first driving component, and a support. The base is disposed on the worktable, and the first guide rail extending along the Y-axis is provided on one side above the base. The mounting bracket is movably disposed on the first guide rail via a first slider. The support is provided on the other side of the base. The first driving component is disposed on the support, and the output end of the first driving component is connected to the mounting bracket for driving the mounting bracket to move along the first guide rail. The pressure head is disposed at the top of the mounting bracket via an adjusting rod, and the adjusting rod is threaded onto the mounting bracket for adjusting the height of the pressure head so that the pressure head abuts against the water pump.

[0010] Preferably, the workbench is further provided with a detection and identification device and a control system. The detection and identification device is used to determine whether a sealing ring is installed on the waterway based on an image algorithm of a photograph it takes containing the waterway.

[0011] The workbench is also equipped with at least two through-beam sensors. The control system is electrically connected to at least one of the through-beam sensors. The through-beam sensors are located on both sides of the waterway. The through-beam sensors are used to detect whether the number of sealing rings installed on the waterway exceeds the limit. When the total height of the waterway and one sealing ring is less than the sensing height of the through-beam sensor and the total height of the waterway and two sealing rings, the through-beam sensor on one side cannot receive the signal emitted by the through-beam sensor on the other side. The control system then controls the alarm to sound.

[0012] Preferably, it also includes an X-axis moving device, a Y-axis moving device, and a Z-axis moving device. The X-axis moving device is disposed on the worktable, and the worktable is also provided with a fixed frame. The Y-axis moving device is disposed on the fixed frame, the Z-axis moving device is disposed on the Y-axis moving device, and the bolt tightening device is disposed on the Z-axis moving device.

[0013] The X-axis moving device includes a second guide rail and a mounting plate. The worktable is provided with the second guide rail extending along the X-axis. The mounting plate is movably mounted on the second guide rail via a second slider. The pressing device and the clamping device are both mounted on the mounting plate.

[0014] Preferably, the mounting plate is further provided with a plurality of positioning blocks, and the outer wall of the waterway abuts against the plurality of positioning blocks to achieve the positioning of the waterway;

[0015] The mounting plate is also provided with multiple support columns, each with a limiting protrusion. The lower end of the waterway is provided with a groove corresponding to each limiting protrusion. During installation, the limiting protrusion is engaged in the groove to position the waterway.

[0016] The outer wall of the support column is fitted with an anti-collision protective sleeve, which abuts against the bottom end of the waterway.

[0017] Preferably, the clamping device includes a third driving member, a connecting part, a first connecting rod, a second connecting rod, a third connecting rod, a mounting block, and a clamping part. The third driving member is disposed on the worktable, with its output end facing upward and connected to the connecting part. The bottom end of the first connecting rod is hinged to the connecting part, and the top end of the first connecting rod is hinged to the middle part of the clamping part. The first end of the clamping part abuts against the water channel. One end of the second connecting rod is hinged to the end of the clamping part, and the other end of the second connecting rod is connected to the mounting block. The mounting block is located on one side of the third connecting rod, and the top end of the mounting block abuts against the clamping part. The two ends of the third connecting rod are respectively hinged to the middle part of the first connecting rod and the connecting block.

[0018] Preferably, the workbench is also equipped with a scanning device, which is used to scan the QR code on the water pump. When the number of times the scanning device scans the QR code of the same water pump is greater than a preset number, the control system controls the alarm to sound.

[0019] Preferably, the workbench is further provided with a plurality of sensors for sensing the movement position of the mounting plate, and the sensors are located on one side of the mounting plate.

[0020] In addition, the present invention also proposes a method for assembling a water pump, using the aforementioned machining center, comprising the following steps:

[0021] After the material is loaded into the waterway, a sealing strip is installed on the waterway. The detection and identification device and the through-beam sensor are then activated to detect whether the sealing strip on the waterway is missing or has been installed in excess.

[0022] A positioning pin is placed on the waterway, and the water pump is stacked on top of the waterway. The positioning pin connects the waterway and the water pump to achieve positioning of both. Then, bolts are passed through the waterway and the water pump.

[0023] The scanning device is activated to scan the QR code on the water pump and record the assembly data of the water pump and the water channel. The clamping device clamps the water channel, the pressing device presses the water pump, and then the tightening device tightens the bolts.

[0024] Preferably, before the step of "starting the scanning device to scan the QR code on the water pump", the following step is also included: using a pre-tightening device to initially tighten the bolts.

[0025] This invention discloses a method for assembling a machining center and a water pump, which has the following beneficial effects:

[0026] 1. The connecting bolts between the water pump and the water channel are automatically tightened by a bolt tightening device. Before tightening, the water channel is clamped by a clamping device, and the water pump on the water channel is pressed by a pressing device to prevent the water channel and water pump from shifting during the tightening process. The automation level is high, which improves processing efficiency, reduces processing cycle, and ensures that the tightening degree of each bolt is consistent, thus ensuring the quality of the finished water pump after assembly.

[0027] 2. An additional detection and identification device and a through-beam sensor are added to detect whether the sealing ring is missing or extra, further ensuring the quality of the finished water pump and preventing leakage. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the machining center of the present invention;

[0030] Figure 2 This is a partial structural schematic diagram of the machining center of the present invention;

[0031] Figure 3 This is a partial structural schematic diagram of the machining center of the present invention from another angle;

[0032] Figure 4 This is a partial structural diagram of the machining center of the present invention from another angle;

[0033] Figure 5 This is a schematic diagram of the clamping and pressing device of the machining center of the present invention;

[0034] Figure 6 This is a schematic diagram of the water channel structure of the processing center of the present invention;

[0035] Figure 7 This is an exploded view of the water channels and water pumps in the processing center of this invention.

[0036] In the attached diagram: 1-Worktable, 11-X-axis moving device, 111-Second driving component, 112-Second guide rail, 113-Mounting plate, 1131-Positioning block, 1132-Support column, 1133-Limiting protrusion, 1134-Anti-collision protective sleeve, 114-Second slider, 12-Y-axis moving device, 13-Z-axis moving device, 14-Fixed frame, 15-Sensing sensor, 2-Clamping device, 21-Third driving component, 22-Connecting part, 23-First connecting rod, 24-Second... 25-Third connecting rod, 26-Mounting block, 27-Clamping part, 3-Water channel, 31-Sealing ring, 32-Groove, 33-Positioning pin, 4-Pressure device, 41-Base, 42-First guide rail, 43-Mounting bracket, 44-Pressure head, 45-First driving component, 46-Support, 47-First slider, 48-Adjusting rod, 5-Water pump, 51-Bolt, 6-Bolt tightening device, 7-Detection and identification device, 71-Through-beam sensor, 8-Scanning device, 9-Pre-tightening device.

[0037] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that if the embodiments of the present invention involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0040] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are 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 with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0041] like Figures 1 to 5 As shown, a machining center includes a worktable 1;

[0042] Clamping device 2: Several clamping devices 2 are provided on the workbench 1. The clamping devices 2 are used to clamp the waterway 3.

[0043] A clamping device 4 is movably mounted on the workbench 1. The clamping device 4 is used to clamp the water pump 5 stacked on the water channel 3. The water channel 3 and the water pump 5 are connected by multiple bolts 51.

[0044] A bolt tightening device 6 is movably mounted on the workbench 1, and the bolt tightening device 6 is used to tighten the bolt 51.

[0045] The machining center in this design is particularly suitable for assembling water channels 3 and water pumps 5. In other embodiments, it can also be used to assemble different components.

[0046] The machining center of this solution includes a machining table, on which all devices are mounted. Some devices are located on the surface of the machining table, while others are located above it. The clamping device 2 on the machining table can clamp the water channel 3 placed on the machining table. Typically, multiple clamping devices 2 are used simultaneously to clamp the edges of the water channel 3 to prevent it from shifting during assembly. The pressing device 4 is used to press the water pump 5 on the water channel 3 to prevent it from shifting during screw tightening. The water pump 5 and the water channel 3 can be connected by four or more bolts 51. The machining center of this solution includes a bolt tightening device 6 that automatically tightens each bolt 51, resulting in a high degree of automation, improved processing efficiency, reduced processing cycle, and consistent tightening of each bolt 51, ensuring the finished product quality of the water pump 5.

[0047] Further, the pressing device 4 includes a base 41, a first guide rail 42, a mounting bracket 43, a pressing head 44, a first driving member 45, and a support 46. The base 41 is disposed on the workbench 1. The first guide rail 42 extending along the Y-axis is provided on one side of the base 41. The mounting bracket 43 is movably disposed on the first guide rail 42 via a first slider 47. The support 46 is provided on the other side of the base 41. The first driving member 45 is disposed on the support 46, and the output end of the first driving member 45 is connected to the mounting bracket 43 to drive the mounting bracket 43 to move along the first guide rail 42. The pressing head 44 is disposed at the top of the mounting bracket 43 via an adjusting rod 48. The adjusting rod 48 is threadedly connected to the mounting bracket 43 to adjust the height of the pressing head 44 so that the pressing head 44 abuts against the water pump 5.

[0048] like Figure 5As shown, the operation of the first driving component 45 drives the mounting bracket 43 and the pressure head 44 to move freely along the first guide rail 42 in the Y-axis direction, thereby pressing the water pumps 5 at different positions to accommodate the installation of different models of water pumps 5. The pressure head 44 is threadedly connected to the top of the mounting bracket 43 via an adjusting rod 48. That is, when the adjusting rod 48 is turned, the pressure head 44 can move up and down accordingly to better press the water pump 5 at its lower end. In this solution, the adjusting rod 48 can also be a bolt 51.

[0049] Furthermore, the workbench 1 is also equipped with a detection and identification device 7 and a control system. The detection and identification device 7 is used to determine whether a sealing ring 31 is installed on the waterway 3 based on an image algorithm of a photograph it takes containing the waterway 3. The detection and identification device 7 can be a camera with a built-in image algorithm or other electronic devices with functions such as taking pictures and recording videos. Determining whether another object (sealing ring 31) is installed on a certain object (waterway 3) using an image algorithm is existing technology. There are many image algorithms that can achieve this function, so they will not be described in detail here.

[0050] The workbench 1 is also equipped with at least two through-beam sensors 71. The control system is electrically connected to at least one of the through-beam sensors 71. The through-beam sensors 71 are located on both sides of the waterway 3. The through-beam sensors 71 are used to detect whether the number of sealing rings 31 installed on the waterway 3 exceeds the limit. When the total height of the waterway 3 and one sealing ring 31 is less than the sensing height of the through-beam sensor 71 and less than the total height of the waterway 3 and two sealing rings 31, the through-beam sensor 71 on one side cannot receive the signal emitted by the through-beam sensor 71 on the other side. The control system then controls the alarm to sound.

[0051] like Figure 7 As shown, a sealing ring 31 (rubber strip) is provided at the joint between the water channel 3 and the water pump 5 to serve as a waterproof measure and prevent liquid leakage from the water pump 5. The sealing ring 31 can be placed manually or mechanically. Since there may be cases of placing too many or missing sealing rings 31, in order to prevent water leakage in the finished water pump 5 after subsequent assembly, this solution adds a detection and identification device 7 and a through-beam sensor 71, which are used to detect whether the sealing ring 31 is missing or too many.

[0052] The detection and identification device 7 includes a vision sensor that can capture images of the waterway 3 and use image algorithms to detect whether the sealing rings 31 are correctly installed, accurately positioned in the sealing groove of the waterway 3, and whether any are missing. Two through-beam sensors 71 are positioned opposite each other on the workbench 1, one transmitting a signal and the other receiving it. When the number of sealing rings 31 installed on the waterway 3 is accurate, the signal emitted by the through-beam sensor 71 will not be blocked by the sealing rings 31, allowing subsequent assembly processes to continue. When too many sealing rings 31 are installed on the waterway 3, the signal emitted by the through-beam sensor 71 will be blocked by the extra sealing rings 31, and the other through-beam sensor 71 will not receive a signal. In this case, the control system will activate an alarm, allowing operators to promptly detect and correct the error.

[0053] Furthermore, it also includes an X-axis moving device 11, a Y-axis moving device 12, and a Z-axis moving device 13. The X-axis moving device 11 is mounted on the worktable 1, and the worktable 1 is also provided with a fixed frame 14. The Y-axis moving device 12 is mounted on the fixed frame 14, the Z-axis moving device 13 is mounted on the Y-axis moving device 12, and the bolt tightening device 6 is mounted on the Z-axis moving device 13.

[0054] The X-axis moving device 11 includes a second guide rail 112 and a mounting plate 113. The worktable 1 is provided with the second guide rail 112 extending along the X-axis. The mounting plate 113 is movably mounted on the second guide rail 112 via a second slider 114. The pressing device 4 and the clamping device 2 are both mounted on the mounting plate 113.

[0055] Waterway 3 and water pump 5 are mounted on X-axis moving device 11. During material loading, X-axis moving device 11 moves to its initial position. When it is necessary to tighten bolts 51, X-axis moving device 11 moves to the working position. Bolt tightening device 6 is mounted on Y-axis moving device 12 and Z-axis moving device 13, and can move freely along the Y-axis and / or Z-axis to facilitate tightening bolts 51 at different positions.

[0056] Both the Y-axis moving device 12 and the Z-axis moving device 13 can be composed of structures such as motors, lead screws, guide rails, and sliders. In this design, the first driving component 45 can be a cylinder, and the second driving component 111 and the third driving component 21 can be motors, etc.

[0057] Furthermore, the mounting plate 113 is also provided with a plurality of positioning blocks 1131, and the outer wall of the waterway 3 abuts against the plurality of positioning blocks 1131 respectively to achieve the positioning of the waterway 3;

[0058] The mounting plate 113 is also provided with a plurality of support columns 1132, and the support columns 1132 are provided with limiting protrusions 1133. The lower end of the waterway 3 is provided with grooves 32 corresponding to the limiting protrusions 1133. During installation, the limiting protrusions 1133 are engaged in the grooves 32 to achieve the positioning of the waterway 3.

[0059] The outer wall of the support column 1132 is fitted with an anti-collision protective sleeve 1134, which abuts against the bottom end of the waterway 3.

[0060] like Figures 5 to 6 As shown, the mounting plate 113 is provided with multiple positioning blocks 1131, which form a placement space. When loading, the water channel 3 is placed in this placement space to achieve initial positioning. Since the mounting plate 113 is also provided with support columns 1132, and since the water channel 3 is not a regular shape, the support columns 1132 can support the water channel 3 at different positions, so that the top of the water channel 3 is in a horizontal state, which can better complete the assembly between the water channel 3 and the water pump 5. On the other hand, the support columns 1132 can also achieve secondary positioning of the water channel 3. Since the support columns 1132 are provided with limiting protrusions 1133, and the lower end of the water channel 3 is provided with a groove 32 corresponding to the limiting protrusions 1133, when the water channel 3 is in use, after the limiting protrusions 1133 are aligned with the grooves 32, the water channel 3 achieves secondary positioning, which can further prevent the water channel 3 from shifting. Some of the support columns 1132 are also provided with anti-collision protective sleeves 1134 on their outer walls. The anti-collision protective sleeves 1134 are supported by anti-collision rubber and are mainly to prevent the product from being damaged when the water channel 3 is discharged.

[0061] In this scheme, three positioning blocks 1131 and four support columns 1132 can be set. In other embodiments, the number of positioning blocks 1131 and support columns 1132 can be adjusted appropriately according to the specifications of the water pump 5 and the waterway 3.

[0062] Further, the clamping device 2 includes a third driving member 21, a connecting part 22, a first connecting rod 23, a second connecting rod 24, a third connecting rod 25, a mounting block 26, and a clamping part 27. The third driving member 21 is disposed on the worktable 1, with its output end facing upward and connected to the connecting part 22. The bottom end of the first connecting rod 23 is hinged to the connecting part 22, and the top end of the first connecting rod 23 is hinged to the middle part of the clamping part 27. The first end of the clamping part 27 abuts against the waterway 3. One end of the second connecting rod 24 is hinged to the end of the clamping part 27, and the other end of the second connecting rod 24 is connected to the mounting block 26. The mounting block 26 is located on one side of the third connecting rod 25, and the top end of the mounting block 26 abuts against the clamping part 27. The two ends of the third connecting rod 25 are respectively hinged to the middle part of the first connecting rod 23 and the connecting block.

[0063] When the third drive unit 21 is activated, its output end drives the connecting part 22 to move up and down. Then, through the cooperation between the first connecting rod 23, the second connecting rod 24, and the third connecting rod 25, the clamping part 27 moves up and down to clamp or release the water channel 3. The structure is simple and the clamping effect on the water channel 3 is good.

[0064] Furthermore, the workbench 1 is also equipped with a scanning device 8, which is used to scan the QR code on the water pump 5. When the number of times the scanning device 8 scans the same QR code on the water pump 5 is greater than a preset number, the control system controls the alarm to sound.

[0065] The scanning device 8 includes a barcode scanner that can scan the QR code on the water pump 5 and record the assembly data between the water pump 5 and the water channel 3 at that time. This includes images of the sealing strip taken by the detection and identification device 7, the clamping torque data of the clamping device 4, and the tightening torque data of each bolt 51 tightened by the bolt tightening device 6. If any abnormalities occur later, the client can review the data to check the assembly status of the water pump 5 during assembly. Furthermore, since the water channel 3 may be damaged after a period of use, while the water pump 5 can be recycled, it is generally considered that the water pump 5 can be recycled once. Excessive recycling can lead to inaccuracies. Therefore, the preset number of times in this solution can be set to two: one scan during initial assembly by the scanning device 8, and another scan during recycling. If the water pump 5 is subsequently recycled and reassembled, the control system will alarm to prevent the water pump 5 from being recycled and reassembled too many times.

[0066] Of course, in other special cases, the preset number of attempts can be increased or decreased.

[0067] Furthermore, the workbench 1 is also equipped with several sensors 15 for sensing the movement position of the mounting plate 113. The sensors 15 are located on one side of the mounting plate 113. In this solution, there can be two sensors 15, mainly used to detect whether the mounting bracket has moved to the correct position in the X-axis direction. The two sensors 15 are located at a first position and a second position, respectively. The first position corresponds to the mounting plate 113 being in the original sensing position (clamping device 2), at which time the water channel 3 can be placed; the second position corresponds to the position where the bolt tightening device 6 can be tightened to the position of the bolt 51 on the water pump 5.

[0068] In addition, the present invention also proposes a method for assembling a water pump, using the aforementioned machining center, comprising the following steps:

[0069] After the material is loaded into the waterway 3, a sealing strip is installed on the waterway 3. The detection and identification device 7 and the through-beam sensor 71 are then activated to detect whether the sealing strip on the waterway 3 is missing or over-installed.

[0070] A positioning pin 33 is placed on the waterway 3, and the water pump 5 is stacked on top of the waterway 3. The positioning pin 33 connects the waterway 3 and the water pump 5 to achieve positioning of the two. Then, a bolt 51 is passed through the waterway 3 and the water pump 5.

[0071] The scanning device 8 is activated to scan the QR code on the water pump 5 and record the assembly data of the water pump 5 and the water channel 3. The clamping device 2 clamps the water channel 3, the pressing device 4 presses the water pump 5, and then the tightening device tightens the bolt 51.

[0072] The above assembly method allows for more precise and efficient assembly of waterway 3 and water pump 5, with a high degree of automation, minimizing the risk of product leakage due to assembly issues.

[0073] Furthermore, before the step of "starting the scanning device 8 to scan the QR code on the water pump 5", the following step is also included: using the pre-tightening device 9 to initially tighten the bolts 51. The pre-tightening device 9 includes an installation sleeve, which the operator can use to initially tighten each bolt 51 individually, until the nut on the bolt will not easily fall off, thus preventing the bolts 51 from falling off when the bolt tightening device 6 is tightening them.

[0074] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A machining center, characterized in that, include: Workbench (1); Clamping device (2), a number of clamping devices (2) are provided on the workbench (1), the clamping devices (2) are used to clamp the waterway (3); A clamping device (4) is movably mounted on the workbench (1). The clamping device (4) is used to clamp the water pump (5) stacked on the water channel (3). The water channel (3) and the water pump (5) are connected by multiple bolts (51). The pressing device (4) includes a base (41), a first guide rail (42), a mounting bracket (43), a pressing head (44), a first driving member (45), and a support (46). The base (41) is mounted on the workbench (1). The first guide rail (42) extending along the Y-axis is provided on one side of the base (41). The mounting bracket (43) is movably mounted on the first guide rail (42) via a first slider (47). The support (46) is provided on the other side of the base (41). A drive unit (45) is disposed on the support (46), and the output end of the first drive unit (45) is connected to the mounting bracket (43) for driving the mounting bracket (43) to move along the first guide rail (42). The pressure head (44) is disposed at the top of the mounting bracket (43) through an adjusting rod (48). The adjusting rod (48) is threadedly connected to the mounting bracket (43) for adjusting the height of the pressure head (44) so ​​that the pressure head (44) abuts against the water pump (5). A bolt tightening device (6) is movably mounted on the workbench (1) and is used to tighten the bolt (51).

2. A machining center according to claim 1, characterized in that, The workbench (1) is also equipped with a detection and identification device (7) and a control system. The detection and identification device (7) is used to perform image algorithm to determine whether a sealing ring (31) is installed on the waterway (3) based on the photo it takes containing the waterway (3). At least two through-beam sensors (71) are also provided on the workbench (1). The control system is electrically connected to at least one of the through-beam sensors (71). The through-beam sensors (71) are located on both sides of the waterway (3). The through-beam sensors (71) are used to detect whether the number of sealing rings (31) installed on the waterway (3) exceeds the standard. The total height of the waterway (3) and one sealing ring (31) is less than the sensing height of the through-beam sensor (71) and less than the total height of the waterway (3) and two sealing rings (31). When there are ≥ 2 sealing rings (31) installed on the waterway (3), the through-beam sensor (71) on one side cannot receive the signal emitted by the through-beam sensor (71) on the other side. The control system controls the alarm to sound.

3. A machining center according to claim 1, characterized in that, It also includes an X-axis moving device (11), a Y-axis moving device (12) and a Z-axis moving device (13). The X-axis moving device (11) is mounted on the worktable (1). The worktable (1) is also provided with a fixed frame (14). The Y-axis moving device (12) is mounted on the fixed frame (14). The Z-axis moving device (13) is mounted on the Y-axis moving device (12). The bolt tightening device (6) is mounted on the Z-axis moving device (13). The X-axis moving device (11) includes a second driving member (111), a second guide rail (112) and a mounting plate (113). The worktable (1) is provided with the second guide rail (112) extending along the X-axis. The mounting plate (113) is movably mounted on the second guide rail (112) via a second slider (114). The worktable (1) is provided with the second driving member (111). The output end of the second driving member (111) is connected to the mounting plate (113). The pressing device (4) and the clamping device (2) are both mounted on the mounting plate (113).

4. A machining center according to claim 3, characterized in that, The mounting plate (113) is also provided with a plurality of positioning blocks (1131), and the outer wall of the waterway (3) abuts against the plurality of positioning blocks (1131) respectively to realize the positioning of the waterway (3); The mounting plate (113) is also provided with a plurality of support columns (1132), and the support columns (1132) are provided with limiting protrusions (1133). The lower end of the waterway (3) is provided with grooves (32) corresponding to the limiting protrusions (1133). During installation, the limiting protrusions (1133) are engaged in the grooves (32) to achieve the positioning of the waterway (3). The outer wall of the support column (1132) is fitted with an anti-collision protective sleeve (1134), which abuts against the bottom end of the waterway (3).

5. A machining center according to claim 1, characterized in that, The clamping device (2) includes a third driving member (21), a connecting part (22), a first connecting rod (23), a second connecting rod (24), a third connecting rod (25), a mounting block (26), and a clamping part (27). The third driving member (21) is mounted on the workbench (1), with its output end facing upward and connected to the connecting part (22). The bottom end of the first connecting rod (23) is hinged to the connecting part (22), and the top end of the first connecting rod (23) is connected to the middle of the clamping part (27). The first end of the clamping part (27) abuts against the waterway (3), one end of the second connecting rod (24) is hinged to the end of the clamping part (27), and the other end of the second connecting rod (24) is connected to the mounting block (26). The mounting block (26) is located on one side of the third connecting rod (25), and the top end of the mounting block (26) abuts against the clamping part (27). The two ends of the third connecting rod (25) are respectively hinged to the middle part of the first connecting rod (23) and the connecting block.

6. A machining center according to claim 2, characterized in that, The workbench (1) is also equipped with a scanning device (8), which is used to scan the QR code on the water pump (5). When the number of times the scanning device (8) scans the QR code of the same water pump (5) is greater than the preset number, the control system controls the alarm to sound.

7. A machining center according to claim 3, characterized in that, The workbench (1) is also provided with a number of sensing sensors (15) for sensing the moving position of the mounting plate (113), and the sensing sensors (15) are located on one side of the mounting plate (113).

8. A method for assembling a water pump, characterized in that, Using the machining center as described in claim 6 includes the following steps: After the waterway (3) is filled with material, a sealing strip is installed on the waterway (3), and the detection and identification device (7) and the through-beam sensor (71) are activated to detect whether the sealing strip on the waterway (3) is missing or over-installed. A positioning pin (33) is placed on the waterway (3), and the water pump (5) is stacked on top of the waterway (3). The positioning pin (33) connects the waterway (3) and the water pump (5) to achieve positioning of both. Then, a bolt (51) is passed through the waterway (3) and the water pump (5). The scanning device (8) is activated to scan the QR code on the water pump (5) and record the assembly data of the water pump (5) and the water channel (3). The clamping device (2) clamps the water channel (3), and the pressing device (4) presses the water pump (5) in place. Then, the bolt tightening device (6) is used to tighten the bolt (51).

9. A method for assembling a water pump according to claim 8, characterized in that, Before the step of “starting the scanning device (8) to scan the QR code on the water pump (5),” the following step is also included: using the pre-tightening device (9) to pre-tighten the bolt (51).

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