Water pump shaft processing device

Abstract

The application relates to the technical field of water pump shaft production, and discloses a water pump shaft machining device which comprises a first circular plate, a first guide rail, a first sliding block, a first moving plate, a first rotating shaft, a grinding wheel, a supporting table, a first driving element, a second driving element and a third driving element. The first circular plate comprises a through hole at the center of the circular plate, and the through hole is used for accommodating a water pump shaft to be ground. When in use, after the water pump shaft to be ground is placed in the through hole, the third driving element, the second driving element and the first driving element are coordinated and worked, so that the water pump shaft can be ground. Since the number of the grinding wheels is an even number greater than or equal to four and the grinding wheels are distributed in the form of a regular polygon, each grinding wheel is distributed in the form of 180-degree central symmetry with another grinding wheel, so that the radial forces of the water pump shaft from the multiple grinding wheels are balanced with each other. Therefore, the radial runout of the water pump shaft during high-speed rotation is reduced, and the grinding effect is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of water pump shaft production, and in particular to a water pump shaft machining device. BACKGROUND

[0002] A water pump shaft production grinding machine is disclosed in related technology (publication number: CN218225825U) and comprises a base. The base is connected with a lifting movable seat, the top of the lifting movable seat is fixed with a servo motor, and the connecting end of the servo motor is connected with a grinding wheel. The top surface of the base is fixed with telescopic clamping assemblies on both sides, and the water pump shaft is clamped between the two telescopic clamping assemblies.

[0003] In the process of implementing the above technical solutions, it is found that at least the following problems exist in the related technology:

[0004] The water pump shaft production grinding machine can clamp the water pump shaft and drive the water pump shaft to rotate, the grinding wheel is driven to rotate by the servo motor and is driven to move horizontally and longitudinally by the lifting movable seat, and the three work together to complete the polishing work. However, during the polishing process of the grinding machine, the water pump shaft is subjected to a single-direction radial force from the grinding machine, so that the water pump shaft is prone to radial jumping when rotating at high speed, thereby affecting the polishing effect of the water pump shaft.

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0006] In order to have a basic understanding of some aspects of the disclosed technical solutions, a brief summary is given below. The summary is not a general review, nor does it determine the key / important constituent elements or delineate the protection scope of the technical solutions, but serves as a prelude to the detailed description below.

[0007] The technical scheme of the present disclosure provides a water pump shaft machining device to improve the polishing effect of the water pump shaft.

[0008] In some embodiments, the water pump shaft processing device comprises: a first circular plate comprising a through hole at its center; a first guide rail installed on the first circular plate along its radial direction and evenly distributed around the center of the first circular plate, the number of the first guide rails being an even number greater than or equal to four; a first sliding block slidably installed on each of the first guide rails; a first moving plate installed on each of the first sliding blocks; a first rotating shaft rotatably installed on each of the first moving plates along the axial direction of the first circular plate, the first rotating shafts being arranged in a regular polygonal shape; a grinding wheel installed on each of the first rotating shafts for grinding the water pump shaft passing through the through hole; a support table connected to the first circular plate for abutting against the ground; a first driving member installed between the first circular plate and the first moving plates to drive the first moving plates to move towards or away from each other; a second driving member installed between the first circular plate, the first moving plates and the first rotating shafts to drive the first rotating shafts to rotate synchronously; and a third driving member installed on the support table to clamp the two ends of the water pump shaft and drive the water pump shaft to move along its axis and rotate around its axis.

[0009] Optionally, the support table comprises: a support plate comprising a strip-shaped hole extending along the axial direction of the first circular plate; a base installed at the bottom of the support plate; a first support arm installed on the top of the support plate; and the first circular plate is installed on the top of the first support arm.

[0010] Optionally, the third driving member comprises: a second circular plate coaxially distributed with the first circular plate and located on both sides of the first circular plate along the axial direction of the first circular plate; a second guide rail mounted on the opposite surfaces of the second circular plate on both sides along the radial direction of the second circular plate and uniformly distributed around the center of the second circular plate on both sides, the number of the second guide rail on each side being greater than or equal to three; a second sliding block slidably mounted on the plurality of second guide rails on both sides; a second moving plate mounted on the plurality of second sliding blocks on both sides; a cam bearing mounted on the plurality of second moving plates on both sides, the plurality of cam bearings on the same side being distributed in a regular polygonal shape; a first cylinder body connected with the annular side surface of the second circular plate on both sides and coaxially distributed with the second circular plate on both sides; a second cylinder body rotatably sleeved on the first cylinder body on both sides; a first connecting rod rotatably mounted between the second cylinder body and each second moving plate; a first rotating arm connected to the inner side surface of the second cylinder body on both sides; a first support shaft mounted on the opposite surfaces of the second circular plate on both sides along the axial direction of the first circular plate; and a first hydraulic cylinder rotatably mounted between the first support shaft on both sides and the first rotating arm on both sides, wherein the two ends of the water pump shaft are clamped under the driving of the first hydraulic cylinder on both sides.

[0011] Optionally, the third driving member further comprises: a third guide rail mounted on the bottom surface of the support plate along the axial direction of the first circular plate; a third sliding block slidably mounted on the third guide rail and located on both sides of the third guide rail along the axial direction of the first circular plate; a moving frame mounted on the third sliding block on both sides and sleeved on the support plate; a second support arm mounted on the top surface of the moving frame on both sides, the second circular plate on both sides being mounted on the top of the second support arm on both sides; a nut mounted on the moving frame on both sides along the axial direction of the first circular plate; a lead screw mounted on the nut on both sides and penetrating through the moving frame on the other side, the axes of the lead screws on both sides being parallel to each other; a first motor mounted on the bottom surface of the support plate and opposite to the lead screw on both sides, the rotating end of the first motor on both sides being connected with the lead screw on both sides; and wherein the water pump shaft moves along its axis under the driving of the first motor on both sides.

[0012] Optionally, the third driving member further comprises: first spline sleeves rotatably mounted at the centers of the two second circular plates; first spline shafts slidably penetrating the first spline sleeves; top plates mounted at the opposite ends of the first spline shafts; third moving plates rotatably mounted at the other ends of the first spline shafts; second hydraulic cylinders mounted at the moving ends of the second hydraulic cylinders along the axial direction of the first circular plate; and extension rods mounted between the moving ends of the second hydraulic cylinders and the third moving plates; wherein the two ends of the water pump shaft are tightly pressed under the driving of the two second hydraulic cylinders.

[0013] Optionally, the third driving member further comprises: second spline sleeves rotatably mounted at the two moving frames and located below the support plates; first toothed gears mounted at the outer walls of the second spline sleeves; second toothed gears mounted at the outer walls of the first spline sleeves; first toothed belts sleeved on the first toothed gears and the second toothed gears and surrounding the extension rods, the first toothed belts penetrating the strip-shaped holes; second spline shafts slidably penetrating the second spline sleeves; and second motors mounted at the bottom surfaces of the support plates and opposite to the second spline shafts, the rotating ends of the second motors connected with the second spline shafts; wherein the water pump shaft rotates around its axis under the driving of the second motors.

[0014] Optionally, the second driving member comprises: second rotating shafts rotatably mounted at the first moving plates along the axial direction of the first circular plate, the second rotating shafts distributed in a regular polygon and located outside the first rotating shafts; third toothed gears mounted at the second rotating shafts; fourth toothed gears mounted at the first rotating shafts; second toothed belts sleeved between adjacent third toothed gears and fourth toothed gears; third spline shafts rotatably mounted at the first moving plates along the radial direction of the first circular plate; first bevel gears mounted at the third spline shafts; second bevel gears mounted at the second rotating shafts and engaged with the first bevel gears; and third spline sleeves slidably sleeved on the third spline shafts and rotatably mounted at the first circular plate; wherein the third spline sleeves are synchronously rotated to make the grinding wheels synchronously rotate.

[0015] Optionally, the second driving member further comprises: a third bevel gear mounted on the outer wall of the third spline sleeve; a third cylinder connected with the annular side surface of the first circular plate and coaxially distributed with the first circular plate; a fourth cylinder rotatably sleeved on the third cylinder, the fourth cylinder comprising bevel gears and straight gears at two ends thereof, the bevel gears being engaged with the third bevel gear; a motor base mounted on the first circular plate; a third motor mounted on the motor base; and a straight gear mounted on the rotating end of the third motor and engaged with the straight gears.

[0016] Optionally, the first driving member comprises: a fifth cylinder rotatably mounted on the through hole and coaxially distributed with the first circular plate; a rotating disc mounted on the outer wall of the fifth cylinder and coaxially distributed with the first circular plate; and a second connecting rod rotatably mounted between the rotating disc and the plurality of first moving plates respectively; wherein the fifth cylinder is controlled to rotate so as to make the plurality of first moving plates approach or separate from each other.

[0017] Optionally, the first driving member further comprises: a second rotating arm mounted on the outer wall of the fifth cylinder and located on the two sides of the first circular plate along the axial direction of the first circular plate; a second support shaft mounted on the first circular plate along the axial direction of the first circular plate; and an electric push rod rotatably mounted between the second support shaft and the second rotating arm.

[0018] The water pump shaft machining device provided by the technical scheme of the present disclosure can achieve the following technical effects:

[0019] The technical scheme of the present disclosure provides a water pump shaft machining device, which comprises a first circular plate, a first guide rail, a first sliding block, a first moving plate, a first rotating shaft, a grinding wheel, a support table, a first driving element, a second driving element and a third driving element. The first circular plate comprises a through hole at its center, which is used to accommodate the water pump shaft to be polished. The first guide rail is installed on the first circular plate along the radial direction of the first circular plate and is evenly distributed around the center of the first circular plate. The number of the first guide rail is an even number greater than or equal to four, and each first guide rail is used to support and install a slidable first sliding block. The first sliding block is slidably installed on the first guide rail. The first sliding block and the first guide rail are used to guide and support. The first moving plate is installed on each first sliding block. Under the guidance and support of the first sliding block and the first guide rail, the first moving plate can move along the radial direction of the first circular plate. The first rotating shaft is rotatably installed on each first moving plate along the axial direction of the first circular plate. The first rotating shaft is used to support and install the grinding wheel. The grinding wheel is installed on the first rotating shaft and is used to polish the water pump shaft passing through the through hole. The support table is connected with the first circular plate and is used to support the entire device. The first driving element is installed between the first circular plate and the first moving plate and is used to provide driving force to drive the first moving plate to move closer to each other or to separate. The second driving element is installed between the first circular plate, the first moving plate and the first rotating shaft and is used to provide driving force to drive the first rotating shaft to rotate synchronously. The third driving element is installed on the support table and is used to provide driving force to clamp the two ends of the water pump shaft and drive the water pump shaft to move along its axis and rotate around its axis.

[0020] In use, after the water pump shaft to be polished is placed in the through hole, the third driving element can clamp the two ends of the water pump shaft and drive the water pump shaft to move along its axis and rotate around its axis. Then, the second driving element can drive the first rotating shaft to rotate synchronously, thereby driving the grinding wheel to rotate synchronously. Finally, the first driving element and the guidance and support of the first guide rail and the first sliding block can make the first moving plate move closer to each other, thereby driving the first rotating shaft to move closer to each other, until the grinding wheel is in contact with the water pump shaft, thereby polishing the water pump shaft. Since the number of the first guide rail is an even number greater than or equal to four and the first rotating shaft is distributed in a regular polygon, the number of the grinding wheel is an even number greater than or equal to four and is distributed in a regular polygon. Therefore, each grinding wheel is distributed in a 180° central symmetry with another grinding wheel, so that the radial force of the water pump shaft from the grinding wheel is balanced. Thus, the radial runout of the water pump shaft when rotating is reduced, thereby improving the polishing effect. Moreover, since the grinding wheel simultaneously polishes the water pump shaft, the polishing efficiency is improved.

[0021] The foregoing general description and the following description are only exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the embodiments so as to illustrate exemplary principles of the embodiments. Like reference numerals have been used, where possible, to designate comparable elements of the figures and illustrations. The figures are not intended to limit the scope of the embodiments and are not necessarily drawn to scale. In the figures:

[0023] Figure 1 is a sectional view of a water pump shaft machining device provided by an embodiment of the present disclosure;

[0024] Figure 2 is an enlarged view of A in Figure 1

[0025] Figure 3 is an enlarged view of B in Figure 1

[0026] Figure 4 is an enlarged view of C in Figure 1

[0027] Figure 5 is an enlarged view of D in Figure 1

[0028] Figure 6 is an enlarged view of E in Figure 1

[0029] Figure 7 is a front view of a water pump shaft machining device provided by an embodiment of the present disclosure;

[0030] Figure 8 is a bottom view of a water pump shaft machining device provided by an embodiment of the present disclosure;

[0031] Figure 9 is an enlarged view of F in Figure 8

[0032] Figure 10 is a structure schematic view of a first circular plate of a water pump shaft machining device provided by an embodiment of the present disclosure;

[0033] Figure 11 is a structure schematic view of a second circular plate of a water pump shaft machining device provided by an embodiment of the present disclosure.

[0034] REFERENCE NUMERALS:

[0035] ​​​​​​1, first circular plate; 2, first guide rail; 3, first sliding block; 4, first moving plate; 5, first rotating shaft; 6, grinding wheel; 7, support plate; 8, base; 9, first support arm; 10, second circular plate; 11, second guide rail; 12, second sliding block; 13, second moving plate; 14, cam bearing; 15, first cylinder; 16, second cylinder; 17, first connecting rod; 18, first rotating arm; 19, first support shaft; 20, first hydraulic cylinder; 21, third guide rail; 22, third sliding block; 23, moving frame; 24, second support arm; 25, nut; 26, lead screw; 27, first motor; 28, first spline sleeve; 29, first spline shaft; 30, top plate; 31, third moving plate; 32, second hydraulic cylinder; 33, extension rod; 34, second spline sleeve; 35, first toothed belt; 36, second spline shaft; 37, second motor; 38, second rotating shaft; 39, second toothed belt; 40, third spline shaft; 41, third spline sleeve; 42, third cylinder; 43, fourth cylinder; 44, motor base; 45, third motor; 46, spur gear; 47, fifth cylinder; 48, rotating disc; 49, second connecting rod; 50, second rotating arm; 51, second support shaft; 52, electric push rod. DETAILED DESCRIPTION

[0036] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0037] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0038] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0039] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0040] Unless otherwise specified, the term "a plurality of" means two or more.

[0041] In the embodiments of the present disclosure, the character " / " represents a "or" relationship between the preceding and following objects. For example, A / B represents: A or B.

[0042] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0043] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0044] In combination Figures 1 to 11As shown, the water pump shaft machining device provided by the embodiment of the present disclosure comprises a first circular plate 1, a first guide rail 2, a first sliding block 3, a first moving plate 4, a first rotating shaft 5, a grinding wheel 6, a support table, a first driving member, a second driving member and a third driving member. The first circular plate 1 comprises a through hole at its center, which is used to accommodate the water pump shaft to be polished. The first guide rail 2 is installed on the first circular plate 1 along the radial direction of the first circular plate 1 and is uniformly distributed around the center of the first circular plate 1. The number of the first guide rails 2 is an even number greater than or equal to four, which are respectively used to support and install the first sliding blocks 3 which can slide. The first sliding blocks 3 are respectively and slidably installed on the first guide rails 2. The first sliding blocks 3 and the first guide rails 2 are both used for guiding and supporting. The first moving plate 4 is respectively installed on each first sliding block 3 and can move along the radial direction of the first circular plate 1 under the guiding and supporting of the first sliding blocks 3 and the first guide rails 2. The first rotating shaft 5 is rotatably installed on each first moving plate 4 along the axial direction of the first circular plate 1. The first rotating shafts 5 are distributed in a regular polygon and are respectively used to support and install the grinding wheels 6. The grinding wheels 6 are respectively installed on the first rotating shafts 5 and are all used to polish the water pump shaft passing through the through hole. The support table is connected with the first circular plate 1 and is used to abut against the ground to support the whole device. The first driving member is installed between the first circular plate 1 and the first moving plates 4 and is used to provide driving force to drive the first moving plates 4 to move closer to or away from each other. The second driving member is installed between the first circular plate 1, the first moving plates 4 and the first rotating shafts 5 and is used to provide driving force to drive the first rotating shafts 5 to rotate synchronously. The third driving member is installed on the support table and is used to provide driving force to clamp the two ends of the water pump shaft and drive the water pump shaft to move along its axis and rotate around its axis.

[0045] The water pump shaft machining device provided by the embodiment of the present disclosure can clamp the two ends of the water pump shaft and drive the water pump shaft to move along its axis and rotate around its axis through the third driving member after the water pump shaft to be polished is placed inside the through hole. Then, the first rotating shafts 5 can be driven to rotate synchronously through the second driving member, and the grinding wheels 6 can be driven to rotate synchronously. Finally, the first moving plates 4 can be driven to move closer to each other through the first driving member and under the guiding and supporting of the first guide rails 2 and the first sliding blocks 3, and the first rotating shafts 5 can be driven to move closer to each other, and the grinding wheels 6 can abut against the water pump shaft, so that the water pump shaft is polished. Since the number of the first guide rails 2 is an even number greater than or equal to four and the first rotating shafts 5 are distributed in a regular polygon, the number of the grinding wheels 6 is an even number greater than or equal to four and is distributed in a regular polygon. Therefore, each grinding wheel 6 is distributed in a 180° central symmetry with another grinding wheel 6, so that the radial forces of the water pump shaft from the grinding wheels 6 are balanced with each other. Thus, the radial runout of the water pump shaft when rotating at a high speed is reduced, and the polishing effect is improved. Moreover, since the grinding wheels 6 simultaneously polish the water pump shaft, the polishing efficiency is improved.

[0046] Optionally, in combination with Figure 1 , Figure 5 and Figure 7 , the first bearing seat bearing is further included. The first bearing seat bearing is sleeved on the first rotating shaft 5 and is installed on the first moving plate 4.

[0047] In the embodiment of the present disclosure, the first bearing seat bearing is used to reduce the friction between the first rotating shaft 5 and the first moving plate 4 and improve the accuracy of the rotation of the first rotating shaft 5 relative to the first moving plate 4.

[0048] Optionally, Figure 1 , Figure 7 and Figure 8 , the support table includes a support plate 7, a base 8 and a first support arm 9. The support plate 7 includes a strip-shaped hole extending along the axial direction of the first circular plate 1, which is used to pass through the related parts of the device. The base 8 is installed at the bottom of the four corners of the support plate 7, which is used to abut against the ground. The first support arm 9 is installed on the top of the support plate 7, which is used to support and install the first circular plate 1. Among them, the first circular plate 1 is installed on the top of the support arm.

[0049] In the embodiment of the present disclosure, the support plate 7, the base 8 and the first support arm 9 jointly constitute the support table, which is located on the ground and supports and installs the related parts of the device.

[0050] Optionally, in combination with Figure 1 , Figure 2 , Figure 7 and Figure 10As shown, the third driving member includes a second circular plate 10, a second guide rail 11, a second sliding block 12, a second moving plate 13, a cam bearing 14, a first cylinder 15, a second cylinder 16, a first connecting rod 17, a first rotating arm 18, a first support shaft 19 and a first hydraulic cylinder 20. The second circular plate 10 is coaxial with the first circular plate 1, and is located on both sides of the first circular plate 1 along the axial direction of the first circular plate 1. The two second circular plates 10 are respectively used to support the related parts of the installation device. The second guide rail 11 is installed on the opposite faces of the two second circular plates 10 along the radial direction of the second circular plate 10, and is uniformly distributed around the center of the second circular plate 10. The number of the second guide rail 11 on each side is greater than or equal to three, and each is used to support the second sliding block 12 which can slide. The second sliding block 12 is slidably installed on the plurality of second guide rails 11 on both sides, and the plurality of second guide rails 11 and the plurality of second sliding blocks 12 on both sides are used to guide and support. The second moving plate 13 is installed on the plurality of second sliding blocks 12 on both sides, and can move along the radial direction of the second circular plate 10 under the guidance and support of the plurality of second guide rails 11 and the plurality of second sliding blocks 12 on both sides. The cam bearing 14 is installed on the plurality of second moving plates 13 on both sides, and the plurality of cam bearings 14 on the same side are distributed in a regular polygon, and each is used to abut against the water pump shaft. The first cylinder 15 is connected with the annular side face of the second circular plate 10 on both sides, and is coaxial with the second circular plate 10 on both sides, and each is used to support the second cylinder 16 which can rotate. The second cylinder 16 is rotatably sleeved on the first cylinder 15 on both sides, and can rotate relative to the first cylinder 15 on both sides. The first connecting rod 17 is rotatably installed between the second cylinder 16 and each second moving plate 13, and each is used to transmit driving force. The first rotating arm 18 is connected to the inner side face of the second cylinder 16 on both sides, and each is used to drive the second cylinder on both sides to rotate. The first support shaft 19 is installed on the opposite faces of the second circular plate 10 along the axial direction of the first circular plate 1, and each is used to support the first hydraulic cylinder 20 which can rotate. The first hydraulic cylinder 20 is rotatably installed between the first support shaft 19 and the first rotating arm 18 on both sides, and each is used to provide driving force. Under the driving of the first hydraulic cylinder 20 on both sides, the two ends of the water pump shaft are clamped.

[0051] In the embodiment of the present disclosure, the first hydraulic cylinder 20 on both sides is controlled to work, and the first rotating arm 18 on both sides can drive the second cylinder 16 on both sides to reciprocate. Under the pulling or pushing of the plurality of first connecting rods 17 on both sides, and under the guidance and support of the plurality of first guide rails 2 and the plurality of first sliding blocks 3, the plurality of second moving plates 13 on both sides can separate from or approach each other, thereby driving the plurality of cam bearings 14 on both sides to loosen or clamp the two ends of the water pump shaft. Moreover, the two ends of the water pump shaft are clamped by the plurality of cam bearings 14 on both sides, so that the water pump shaft can rotate around its axis while being axially fixed.

[0052] Optionally, in combination with Figure 1 and Figure 2 As shown in the figure, the first bearing is installed between the first cylinder 15 and the second cylinder 16.

[0053] In the embodiments of the present disclosure, the first bearing is used to reduce the friction between the first cylinder 15 and the second cylinder 16, and improve the rotation accuracy of the second cylinder 16 relative to the first cylinder 15.

[0054] Optionally, in combination with Figure 1 , Figure 7 and Figure 8 As shown in the figure, the third driving member further comprises a third guide rail 21, a third sliding block 22, a moving frame 23, a second support arm 24, a nut 25, a lead screw 26 and a first motor 27. The third guide rail 21 is installed on the bottom surface of the support plate 7 in the axial direction of the first circular plate 1, and is used to support the third sliding block 22 which can slide. The third sliding block 22 is slidably installed on the third guide rail 21, and is located on both sides of the third guide rail 21 in the axial direction of the first circular plate 1. The third guide rail 21 and the third sliding blocks 22 on both sides are used for guiding and supporting. The moving frame 23 is installed on the top surface of the third sliding block 22 on both sides, respectively, and is sleeved on the support plate 7. Under the guiding and supporting of the third guide rail 21 and the third sliding blocks 22 on both sides, the moving frame 23 can move in the axial direction of the first circular plate 1, respectively. The second support arm 24 is installed on the top surface of the moving frame 23 on both sides, respectively. The second circular plate 10 on both sides is installed on the top of the second support arm 24 on both sides, respectively, to determine the positional relationship between the second circular plate 10 on both sides and the moving frame 23 on both sides. The nut 25 is installed on the moving frame 23 on both sides in the axial direction of the first circular plate 1, respectively, and is used to drive the moving frame 23 on both sides to move, respectively. The lead screw 26 is installed on the nut 25 on both sides, respectively, and is sleeved on the moving frame 23 on the other side. The axes of the lead screws 26 on both sides are parallel to each other, and are used to convert rotary motion into linear motion. The first motor 27 is installed on the bottom surface of the support plate 7, and is opposite to the lead screw 26 on both sides, respectively. The first motor 27 is used to provide driving force to realize the function of rotary motion. The rotary end of the first motor 27 on both sides is connected to the lead screw 26 on both sides through the first coupling. Under the driving of the first motor 27 on both sides, the water pump shaft moves along its axis.

[0055] In the embodiments of the present disclosure, the first motor 27 on each side is controlled to work, and the first coupling on each side is used to drive the lead screw 26 on each side to rotate. Under the guiding and supporting of the third guide rail 21 and the third sliding block 22 on each side, the nut 25 on each side drives the moving frame 23 on each side to move, and then the second support arm 24 on each side is driven to move, and the position of the second circular plate 10 on each side is adjusted. Similarly, the first motor 27 on each side is controlled to work synchronously, so that the second circular plate 10 on each side moves synchronously. Therefore, before clamping the water pump shaft, the plurality of cam bearings 14 on each side are distributed around the two ends of the water pump shaft, and after the plurality of cam bearings 14 on each side clamp the water pump shaft, the water pump shaft is driven to move along the axis. In addition, the third guide rail 21, the third sliding block 22, the moving frame 23, the second support arm 24, the nut 25, the lead screw 26 and the first motor 27 are all located below the support plate 7, so that the dust generated during polishing can be prevented from directly falling on the surface.

[0056] Optionally, in combination with Figure 1 、 Figure 3 、 Figure 7 and Figure 9 , the second seat bearing is further included. The second seat bearing is sleeved on the two ends of the lead screw 26 on each side and is installed on the bottom surface of the support plate 7.

[0057] In the embodiments of the present disclosure, the plurality of second seat bearings are used to improve the rotation accuracy of the lead screw 26 on each side and reduce the runout of the lead screw 26 on each side during rotation.

[0058] Optionally, in combination with Figure 1 、 Figure 3 、 Figure 4 and Figure 7As shown, the third driving member further comprises a first spline sleeve 28, a first spline shaft 29, a top plate 30, a third moving plate 31, a second hydraulic cylinder 32 and an extension rod 33. The first spline sleeve 28 is rotatably installed at the center of the second circular plate 10 on both sides, and can rotate relative to the second circular plate 10 on both sides. The first spline shaft 29 is slidably arranged in the first spline sleeve 28 on both sides, can slide relative to the first spline sleeve 28 on both sides, and can drive the first spline sleeve 28 on both sides to rotate. The top plate 30 is installed at the opposite end of the first spline shaft 29 on both sides, and is used for abutting against both ends of the water pump shaft. The third moving plate 31 is rotatably installed at the other end of the first spline shaft 29 on both sides, so that the third moving plate 31 on both sides can drive the first spline shaft 29 on both sides to move, and the first spline shaft 29 on both sides can rotate relative to the third moving plate 31 on both sides. The second hydraulic cylinder 32 is installed in the axial direction of the first circular plate 1 on both sides, and is installed on the second support arm 24 on both sides, and is used for providing driving force to realize linear movement function. The extension rod 33 is installed between the moving end of the second hydraulic cylinder 32 on both sides and the third moving plate 31 on both sides, and is used for adjusting the distance between the third moving plate 31 on both sides and the moving end of the second hydraulic cylinder 32 on both sides. Wherein, under the driving of the second hydraulic cylinder 32 on both sides, both ends of the water pump shaft are abutted tightly.

[0059] In the embodiment of the present disclosure, the second hydraulic cylinder 32 on both sides is controlled to work, and the moving plate on both sides can be driven to move through the extension rod 33 on both sides, and then the first spline shaft 29 on both sides can slide relative to the first spline sleeve 28 on both sides, and finally the top plate 30 on both sides can abut against both ends of the water pump shaft. While the water pump shaft is fixed in the axial direction, the top plate 30 on both sides can drive the water pump shaft to rotate around the axis under the action of friction.

[0060] Optionally, as shown in Figure 1 and Figure 4 Further comprising a first bearing seat and a second bearing. The first bearing seat is installed at the center of the second circular plate 10 on both sides, and is sleeved on the first spline sleeve 28 on both sides. The second bearing is installed between the first bearing seat on both sides and the second bearing on both sides.

[0061] In the embodiment of the present disclosure, the first bearing seat on both sides is used for supporting and limiting the second bearing on both sides. The second bearing on both sides is used for supporting and installing the rotatable first spline sleeve 28 on both sides, reducing the friction of the first spline sleeve 28 on both sides, and improving the rotation accuracy of the first spline sleeve 28 on both sides.

[0062] Optionally, as shown in Figure 1 and Figure 4 Further comprising a third bearing. The third bearing is installed between the third moving plate 31 on both sides and the first spline shaft 29 on both sides.

[0063] In the embodiments of the present disclosure, the third bearing is used to allow mutual rotation between the two third moving plates 31 and the two first spline shafts 29, and to reduce the friction between the two third moving plates 31 and the two first spline shafts 29.

[0064] Optionally, as shown in Figure 1 , Figure 3 , Figure 4 , Figure 7 , Figure 8 and Figure 9 , the third driving member further comprises a second spline sleeve 34, a first toothed gear, a second toothed gear, a first toothed belt 35, a second spline shaft 36 and a second motor 37. The second spline sleeve 34 is rotatably installed on the two moving frames 23 and is located below the support plate 7, and can rotate relative to the two moving frames 23, respectively. The first toothed gear is installed on the outer wall of the two second spline sleeves 34, and rotates under the driving of the two second spline sleeves 34, respectively. The second toothed gear is installed on the outer wall of the two first spline sleeves 28, and is used to drive the two first spline sleeves 28 to rotate, respectively. The first toothed belt 35 is sleeved on the two first toothed gears and the two second toothed gears, and surrounds the two extension rods 33, respectively. The two first toothed belts 35 pass through the strip-shaped holes and are used to transmit driving force. The second spline shaft 36 is slidably arranged in the two second spline sleeves 34 and is used to drive the two second spline sleeves 34 to rotate. In addition, the two second spline sleeves 34 can slide relative to the second spline shaft 36, so that interference can be avoided when the positions of the two sides are adjusted. The second motor 37 is installed on the bottom surface of the support plate 7 and is opposite to the second spline shaft 36, and is used to provide driving force to realize the rotating movement function. The rotating end of the second motor 37 is connected to the second spline shaft 36 through a second coupling. Under the driving of the second motor 37, the water pump shaft rotates around its axis.

[0065] In the embodiments of the present disclosure, the second motor 37 is controlled to work, and the second spline shaft 36 is driven to rotate through the second coupling. Then, the two second spline sleeves 34 are driven to rotate, and then the two first toothed gears are driven to rotate. Through the two first toothed belts 35, the two first spline sleeves 28 are driven to rotate. Then, the two first spline shafts 29 are driven to rotate, and finally the two top plates 30 are driven to rotate, thereby realizing the function of rotating the water pump shaft around its axis.

[0066] Optionally, as shown in Figure 1 and Figure 3 , a fourth bearing is further included. The fourth bearing is installed between the two moving frames 23 and the two second spline sleeves 34, respectively.

[0067] In the embodiments of the present disclosure, the fourth bearing is used to reduce the friction between the two-side moving frame 23 and the two-side second spline sleeve 34, and improve the rotation accuracy of the two-side second spline sleeve 34 relative to the two-side moving frame 23.

[0068] Optionally, in combination with Figure 1 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 11 , the second driving member includes a second rotating shaft 38, a third toothed gear, a fourth toothed gear, a second toothed belt 39, a third spline shaft 40, a first bevel gear, a second bevel gear, and a third spline sleeve 41. The second rotating shaft 38 is rotatably installed on each first moving plate 4 along the axial direction of the first circular plate 1, and a plurality of second rotating shafts 38 are distributed in a regular polygon and located outside the plurality of first rotating shafts 5, and can rotate relative to the plurality of first moving plates 4, respectively. The third toothed gear is installed on the plurality of second rotating shafts 38, respectively, and rotates under the driving of the plurality of second rotating shafts 38, respectively. The fourth toothed gear is installed on the plurality of first rotating shafts 5, respectively, and is used to drive the plurality of first rotating shafts 5 to rotate, respectively. The second toothed belt 39 is sleeved between adjacent third toothed gears and fourth toothed gears, respectively, and is used to transmit driving force. The third spline shaft 40 is rotatably installed on the plurality of first moving plates 4 along the radial direction of the first circular plate 1, and can rotate around its axis, respectively. The first bevel gear is installed on the plurality of third spline shafts 40, respectively, and rotates under the driving of the plurality of third spline shafts 40, respectively. The second bevel gear is installed on the plurality of second rotating shafts 38, respectively, and is used to drive the plurality of second rotating shafts 38 to rotate, respectively. The plurality of second bevel gears are engaged with the plurality of first bevel gears, respectively, and are used to drive and change the direction of the force. The third spline sleeve 41 is slidably sleeved on the plurality of third spline shafts 40, and is rotatably installed on the first circular plate 1. The plurality of third spline sleeves 41 can slide relative to the plurality of third spline shafts 40, and drive the plurality of third spline shafts 40 to rotate. Among them, the plurality of third spline sleeves 41 are controlled to rotate synchronously, so that the plurality of polishing wheels 6 rotate synchronously.

[0069] In the embodiments of the present disclosure, after the plurality of third spline sleeves 41 are driven to rotate synchronously under the external force, the plurality of third spline shafts 40 are driven to rotate, and then the plurality of first bevel gears are driven to rotate. Through the meshing action between the teeth, the plurality of second bevel gears are driven to rotate. Then the plurality of second rotating shafts 38 are driven to rotate, and then the plurality of third toothed gears are driven to rotate. Through the plurality of second toothed belts 39, the plurality of fourth toothed gears are driven to rotate. Then the plurality of first rotating shafts 5 are driven to rotate, and finally the function of synchronous rotation of the plurality of polishing wheels 6 is realized. Moreover, since the plurality of third spline shafts 40 and the plurality of third spline sleeves 41 can slide relative to each other, the plurality of polishing wheels 6 can be moved closer to each other or separated while rotating.

[0070] Optionally, the third belt seat bearing is sleeved on the second rotating shaft 38 and is installed on the first moving plate 4.

[0071] In the embodiment of the present disclosure, the third belt seat bearing is used to reduce the friction between the second rotating shaft 38 and the first moving plate 4 and improve the rotation accuracy of the second rotating shaft 38 relative to the first moving plate 4.

[0072] Optionally, the fourth belt seat bearing is sleeved on the third spline shaft 40 and is installed on the first moving plate 4.

[0073] In the embodiment of the present disclosure, the fourth belt seat bearing is used to support and install the third spline shaft 40, so that the third spline shaft 40 can rotate around its axis and ensure the rotation accuracy of the third spline shaft 40.

[0074] Optionally, the fifth belt seat bearing is sleeved on the third spline sleeve and is installed on the circular plate.

[0075] In the embodiment of the present disclosure, the fifth belt seat bearing is used to support and install the third spline sleeve 41, so that the third spline sleeve 41 can rotate around its axis and ensure the rotation accuracy of the third spline sleeve 41.

[0076] Optionally, in combination with Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , the second driving member further comprises a third bevel gear, a third cylinder 42, a fourth cylinder 43, a motor base 44, a third motor 45 and a straight gear 46. The third bevel gear is installed on the outer wall of the third spline sleeve 41 and is used to drive the third spline sleeve 41 to rotate. The third cylinder 42 is connected to the annular side surface of the first circular plate 1 and is coaxial with the first circular plate 1, and is used to support and install the rotatable fourth cylinder 43. The fourth cylinder 43 is rotatably sleeved on the third cylinder 42 and can rotate relative to the third cylinder 42. The fourth cylinder 43 comprises a bevel gear and a straight gear at its two ends, and the bevel gear and the straight gear are used to transmit driving force. The bevel gear is engaged with the third bevel gear. The motor base 44 is installed on the first circular plate 1 and is used to support and install the third motor 45. The third motor 45 is installed on the motor base 44 and is used to provide driving force to realize the rotation function. The straight gear 46 is installed on the rotating end of the third motor 45 and rotates under the driving of the third motor 45. The straight gear 46 is engaged with the straight gear.

[0077] In the embodiments of the present disclosure, the third motor 45 is controlled to work, i.e. to drive the spur gear 46 to rotate. Through the meshing of the teeth, the fourth barrel 43 is driven to rotate. Through the meshing of the teeth again, the third bevel gear is driven to rotate. In turn, the plurality of third spline sleeves 41 are synchronously driven to rotate, and finally the function of synchronously rotating the plurality of polishing wheels 6 is realized. Compared with the mode of driving the plurality of third spline sleeves 41 to synchronously rotate respectively, the number of power sources is reduced.

[0078] Optionally, a fifth bearing is further included. The fifth bearing is installed between the third barrel 42 and the fourth barrel 43.

[0079] In the embodiments of the present disclosure, the fifth bearing is used to reduce the friction between the third barrel 42 and the fourth barrel 43, and improve the accuracy when the fourth barrel 43 rotates relative to the third barrel 42.

[0080] Optionally, as shown in Figure 1 , Figure 5 , Figure 6 and Figure 7 , the first driving member includes a fifth barrel 47, a rotating disc 48 and a second connecting rod 49. The fifth barrel 47 is rotatably installed in the through hole and coaxially distributed with the first circular plate 1, and can rotate relative to the first circular plate 1. The rotating disc 48 is installed on the outer wall of the fifth barrel 47 and coaxially distributed with the first circular plate 1, and rotates under the driving of the first circular plate 1. The second connecting rod 49 is rotatably installed between the rotating disc 48 and the plurality of first moving plates 4 respectively, and can rotate relative to the rotating disc 48 and the plurality of first moving plates 4 respectively. Among them, the fifth barrel 47 is controlled to rotate, so that the plurality of first moving plates 4 approach or separate from each other.

[0081] In the embodiments of the present disclosure, after the fifth barrel 47 rotates under the driving of the external force, the rotating disc 48 is driven to rotate. Then under the pulling or pushing of the second connecting rod 49, the plurality of first moving plates 4 can approach or separate from each other, finally driving the plurality of polishing wheels 6 to approach or separate from each other, so as to polish the water pump shaft. Compared with the mode of driving the plurality of first moving plates 4 to move respectively, the number of power sources is reduced.

[0082] Optionally, a second bearing seat and a sixth bearing are further included. The second bearing seat is installed in the inner part of the through hole of the mounting plate and is sleeved on the fifth barrel 47. The sixth bearing is installed between the fifth barrel 47 and the second bearing seat.

[0083] In the embodiments of the present disclosure, the second bearing seat is used to support the installation of the sixth bearing and limit the sixth bearing. The sixth bearing is used to support the installation of the rotatable fifth barrel 47, reduce the friction force suffered by the fifth barrel 47, and improve the rotation accuracy of the fifth barrel 47.

[0084] Optionally, as shown in Figure 1 ,Figure 5 、 Figure 6 and Figure 7 As shown in FIG. 2, the first driving member further comprises a second rotating arm 50, a second supporting shaft 51 and an electric push rod 52. The second rotating arm 50 is installed on the outer wall of the fifth cylinder 47 for driving the fifth cylinder 47 to rotate. The second rotating arm 50 and the rotating disc 48 are located on both sides of the first circular plate 1 along the axial direction of the first circular plate 1 to avoid interference of related parts during transmission. The second supporting shaft 51 is installed on the first circular plate 1 along the axial direction of the first circular plate 1 for supporting the rotatable electric push rod 52. The electric push rod 52 is rotatably installed between the second supporting shaft 51 and the second rotating arm 50 and can rotate relative to the second supporting shaft 51 and the second rotating arm 50, respectively.

[0085] In the embodiments of the present disclosure, the electric push rod 52 is controlled to work, and the second rotating arm 50 can drive the fifth cylinder 47 to reciprocate, thereby driving the rotating disc to reciprocate. Then, under the pulling or pushing of the second connecting rod 49, the plurality of first moving plates 4 can be close to or separated from each other, and finally drive the plurality of polishing wheels 6 to close to or separate from each other. Moreover, the electric push rod 52 is used as a power source, which is more accurate in controlling the feed amount during polishing.

[0086] The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments are merely representative of the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be changed. Parts and features of some embodiments can be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A water pump shaft machining apparatus characterized by comprising: The utility model relates to a kind of water pump shaft polishing machine, including: First circular plate, including the through hole at its center; First guide rail, along the radial direction of the first circular plate, is installed in the first circular plate, and is evenly distributed around the center of the first circular plate, the number of the first guide rail is greater than or equal to four even; First slider, respectively slidably installed in a plurality of the first guide rail; First moving plate, respectively installed in each of the first slider; First rotating shaft, respectively rotatably installed in each of the first moving plate along the axial direction of the first circular plate, a plurality of the first rotating shaft is distributed in regular polygon; Polishing wheel, respectively installed in a plurality of the first rotating shaft, all used for polishing water pump shaft passing through the through hole; Supporting table, connected with the first circular plate, used for abutting with ground, the supporting table includes support plate, pedestal and first support arm, support plate includes strip-shaped hole extending along the axial direction of the first circular plate, pedestal is respectively installed at the bottom surface four corners of the support plate, first support arm is installed on the top surface of the support plate, the first circular plate is installed on the top of the first support arm; First driving element, installed between the first circular plate and a plurality of the first moving plate, configured to drive a plurality of the first moving plate to move closer to each other or separate; Second driving element, installed between the first circular plate, a plurality of the first moving plate and a plurality of the first rotating shaft, configured to drive a plurality of the first rotating shaft to rotate synchronously; Third driving element, installed in the supporting table, configured to clamp both ends of the water pump shaft and drive the water pump shaft to move along its axis and rotate around its axis, the third driving element includes second circular plate, second guide rail, second slider, second moving plate, cam bearing, first cylinder, second cylinder, first connecting rod, first rotating arm, first support shaft and first hydraulic cylinder, second circular plate is coaxially distributed with the first circular plate, located on both sides of the first circular plate along the axial direction of the first circular plate, second guide rail is respectively installed on the opposite surface of both sides of the second circular plate along the radial direction of the second circular plate, and is evenly distributed around the center of both sides of the second circular plate, the number of each side of the second guide rail is greater than or equal to three, second slider is respectively slidably installed in a plurality of the second guide rail on both sides, second moving plate is respectively installed in a plurality of the second slider on both sides, cam bearing is respectively installed in a plurality of the second moving plate on both sides, a plurality of the cam bearing on the same side is distributed in regular polygon, first cylinder is respectively connected with the annular side surface of both sides of the second circular plate, and is respectively coaxially distributed with both sides of the second circular plate, second cylinder is respectively rotatably sleeved on both sides of the first cylinder, first connecting rod is respectively rotatably installed between the second cylinder and each of the second moving plate, first rotating arm is respectively connected to the inner side surface of both sides of the second cylinder, first support shaft is respectively installed on the opposite surface of both sides of the second circular plate along the axial direction of the first circular plate, first hydraulic cylinder is respectively rotatably installed between both sides of the first support shaft and both sides of the first rotating arm, under the drive of both sides of the first hydraulic cylinder, both ends of the water pump shaft are clamped.

2. A water pump shaft machining apparatus according to claim 1, wherein The third driving element further includes: A third guide rail is installed on the bottom surface of the support plate along the axial direction of the first circular plate; A third sliding block is slidably installed on the third guide rail and located on both sides of the third guide rail along the axial direction of the first circular plate; A moving frame is installed on both sides of the third sliding block and is sleeved on the support plate; A second support arm is installed on the top surface of both sides of the moving frame, and both sides of the second circular plate are installed on the top of both sides of the second support arm; A nut is installed on both sides of the moving frame along the axial direction of the first circular plate; A lead screw is installed on both sides of the nut and penetrates the other side of the moving frame, and the axes of the lead screws are parallel to each other; A first motor is installed on the bottom surface of the support plate and opposite to both sides of the lead screw, and the rotating end of both sides of the first motor is connected to both sides of the lead screw; Under the drive of both sides of the first motor, the water pump shaft moves along its axis.

3. A water pump shaft machining apparatus according to claim 2, wherein The third driving member further comprises: A first spline sleeve is rotatably installed at the center of both sides of the second circular plate; A first spline shaft is slidably penetrated in both sides of the first spline sleeve; A top plate is installed on the opposite end of both sides of the first spline shaft; A third moving plate is rotatably installed on the other end of both sides of the first spline shaft; A second hydraulic cylinder is installed on both sides of the second support arm along the axial direction of the first circular plate; An extension rod is installed between the moving end of both sides of the second hydraulic cylinder and both sides of the third moving plate; Under the drive of both sides of the second hydraulic cylinder, both ends of the water pump shaft are tightly pressed.

4. A water pump shaft machining apparatus according to claim 3, wherein The third driving member further comprises: A second spline sleeve is rotatably installed on both sides of the moving frame and is located below the support plate; A first gear is installed on the outer wall of both sides of the second spline sleeve; A second gear is installed on the outer wall of both sides of the first spline sleeve; A first toothed belt is sleeved on both sides of the first gear and the second gear and surrounds both sides of the extension rod, and both sides of the first toothed belt penetrate the strip-shaped hole; A second spline shaft is slidably penetrated in both sides of the second spline sleeve; A second motor is installed on the bottom surface of the support plate and opposite to the second spline shaft, and the rotating end of the second motor is connected to the second spline shaft; Under the drive of the second motor, the water pump shaft rotates around its axis.

5. A water pump shaft machining apparatus according to any one of claims 1 to 4, characterized by The second driving member comprises: A second rotating shaft is rotatably installed on each of the first moving plates along the axial direction of the first circular plate, and a plurality of second rotating shafts are distributed in a regular polygon and located outside a plurality of first rotating shafts; A third gear is installed on a plurality of second rotating shafts; A fourth gear is installed on a plurality of first rotating shafts; A second toothed belt is sleeved between adjacent third gears and fourth gears; A third spline shaft is rotatably installed on a plurality of first moving plates along the radial direction of the first circular plate; A first bevel gear is installed on a plurality of third spline shafts; Second bevel gears are respectively mounted on the second rotating shafts and engaged with the first bevel gears; Third spline sleeves are respectively slidably sleeved on the third spline shafts and rotatably mounted on the first circular plate; The third spline sleeves are controlled to synchronously rotate so as to synchronously rotate the polishing wheels.

6. A water pump shaft machining apparatus according to claim 5, wherein The second driving member further comprises: A third bevel gear mounted on the outer wall of the third spline sleeve; A third cylinder connected with the annular side surface of the first circular plate and coaxially distributed with the first circular plate; A fourth cylinder rotatably sleeved on the third cylinder, the fourth cylinder comprising bevel gears and spur gears at two ends thereof, the bevel gears engaged with the third bevel gear; A motor base mounted on the first circular plate; A third motor mounted on the motor base; A spur gear mounted on the rotating end of the third motor and engaged with the spur gears.

7. A water pump shaft machining apparatus according to any one of claims 1 to 4, characterized by The first driving member comprises: A fifth cylinder rotatably mounted on the through hole and coaxially distributed with the first circular plate; A rotating disc mounted on the outer wall of the fifth cylinder and coaxially distributed with the first circular plate; Second connecting rods rotatably mounted between the rotating disc and the first moving plates; The fifth cylinder is controlled to rotate so as to make the first moving plates approach or separate from each other.

8. A water pump shaft machining apparatus according to claim 7, wherein The first driving member further comprises: A second rotating arm mounted on the outer wall of the fifth cylinder and located on the two sides of the first circular plate along the axial direction of the first circular plate; A second support shaft mounted on the first circular plate along the axial direction of the first circular plate; An electric push rod rotatably mounted between the second support shaft and the second rotating arm.

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