Machining tool for spline shaft of high-lift circulating pump

Abstract

The utility model relates to the technical field of high-lift circulating pump production, in particular to a machining tool for a spline shaft of a high-lift circulating pump, which mainly comprises a bottom plate seat, a pivotal bearing, a clamping component, a vertical plate seat, a positioning support shaft, a polishing component and a cutting and slotting component. The clamping assembly is driven by the pivotal bearing to rotate, the pump shaft is pushed to abut against the positioning supporting shaft, a hydraulic expansion sleeve in the clamping assembly is used for clamping the pump shaft, spline grooves are formed in the pump shaft through the cutting and grooving assembly, and machining operation of each spline groove is completed. A turnover system composed of a driven gear ring, a turnover motor and a driving gear is used for driving a pump shaft to rotate by a certain angle, machining operation of a next spline groove can be conducted, and after machining operation of all the spline grooves is completed, the grinding assembly is used for conducting reciprocating grinding and deburring on the spline grooves; in this way, the machining requirement of the spline shaft of the high-lift circulating pump is met.

Description

Technical Field

[0001] This utility model relates to the field of high-lift circulating pump manufacturing technology, and in particular to a machining fixture for the spline shaft of a high-lift circulating pump. Background Technology

[0002] Splined shafts play a crucial role in high-lift circulating pumps. The following is a detailed explanation of the function of splined shafts in high-lift circulating pumps: 1) Torque Transmission: The main function of a splined shaft is to transmit torque from one rotating component to another, ensuring their synchronous rotation. In high-lift circulating pumps, the splined shaft, as an input component, is responsible for transmitting power from the motor to the pump's rotating components, such as the impeller, thereby driving the pump's normal operation. 2) Fixing and Positioning: The keyways on the splined shaft match the keyways on the mating components. This design effectively prevents loosening or slippage between components, ensuring accurate alignment. In high-lift circulating pumps, this fixing and positioning function is crucial for maintaining stable pump operation. 3) Compact Structure and Increased Efficiency: The splined structure allows for the design of compact mechanical systems, which is particularly important in high-lift circulating pumps. A compact design not only saves space but also improves the overall efficiency of the pump, enabling it to pump and deliver water more efficiently while providing sufficient pressure.

[0003] Traditional machining fixtures for high-lift circulating pump spline shafts have shortcomings. First, they cannot reliably clamp the pump shaft during machining, resulting in less than ideal spline machining accuracy. Second, they cannot quickly grind the spline grooves after machining. Therefore, it is necessary to optimize and improve the traditional machining fixtures for high-lift circulating pump spline shafts. Utility Model Content

[0004] The purpose of this invention is to overcome the aforementioned problems in traditional technologies and to provide a machining fixture for the spline shaft of a high-lift circulating pump.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0006] A machining fixture for a high-lift circulating pump spline shaft includes a base plate, a slewing bearing, a clamping assembly, a vertical plate, a positioning support shaft, a grinding assembly, and a cutting and grooving assembly. One end of the base plate is fitted with the clamping assembly via the slewing bearing, and the other end is fitted with the positioning support shaft via the vertical plate. A cutting and grooving assembly for forming spline grooves is mounted on the upper side of the base plate, and a grinding assembly for grinding the spline grooves is also mounted on the vertical plate. The clamping assembly includes a vertical base, in which a hydraulic expansion sleeve is movable and restricted. A driven gear ring is fixed to the outer side of the outer end of the hydraulic expansion sleeve. A tilting motor is embedded in the vertical base, and a driving gear that meshes with the driven gear ring is mounted on the output end of the tilting motor.

[0007] Furthermore, in the above-mentioned machining fixture for the splined shaft of the high-lift circulating pump, the pump shaft to be machined includes a pump shaft body, the outer end of which is provided with a positioning groove, and the pump shaft body is provided with a cylindrical protrusion near the outer end as a spline groove forming part.

[0008] Furthermore, in the machining fixture for the splined shaft of the high-lift circulating pump mentioned above, the outer end of the positioning support shaft is provided with a positioning protrusion that mates with the positioning groove.

[0009] Furthermore, in the machining fixture for the splined shaft of the high-lift circulating pump described above, the clamping assembly can rotate with the slewing bearing until the axis of the hydraulic expansion sleeve coincides with the axis of the positioning support shaft.

[0010] Furthermore, in the machining fixture for the splined shaft of the high-lift circulating pump, the hydraulic expansion sleeve in the clamping assembly cooperates with the pump shaft body. When the hydraulic expansion sleeve is subjected to pressure from the pressurizing bolt or the external working pump, it can tightly lock the pump shaft inserted therein. When the hydraulic expansion sleeve is released from pressure, the pump shaft can slide freely under the drive of the external manipulator.

[0011] Furthermore, in the machining fixture for the spline shaft of the high-lift circulating pump mentioned above, the cutting and grooving assembly consists of a linear guide pair, a lifting push rod, and a rotary cutting tool. The slide rail of the linear guide pair is fixed on the base plate, and the upper side of the slider of the linear guide pair is equipped with a rotary cutting tool that can rotate independently via the lifting push rod.

[0012] Furthermore, in the machining fixture for the spline shaft of the high-lift circulating pump mentioned above, the grinding assembly includes a mounting ring, an axial push rod, a guide rod, a support rod, and a grinding ring. The axial push rod is mounted on the vertical plate seat, and the movable end of the axial push rod is fixed with a mounting ring. One side of the mounting ring is fixed with a guide rod that penetrates the vertical plate seat, and the other side of the mounting ring is connected to the grinding ring via several support rods evenly distributed around the positioning support shaft.

[0013] Furthermore, in the machining fixture for the splined shaft of the high-lift circulating pump, the inner wall of the grinding ring is evenly distributed with grinding protrusions along the circumference, and the cross-sectional shape of the grinding protrusions matches the cross-sectional shape of the spline groove.

[0014] The beneficial effects of this utility model are:

[0015] This utility model has a reasonable structural design, mainly consisting of a base plate, a slewing bearing, a clamping assembly, a vertical plate, a positioning support shaft, a grinding assembly, and a cutting and grooving assembly. First, a robotic arm inserts the pump shaft into the hydraulic expansion sleeve of the clamping assembly. The slewing bearing drives the clamping assembly to rotate, pushing the pump shaft to abut against the positioning support shaft. The hydraulic expansion sleeve in the clamping assembly holds the pump shaft in place. The cutting and grooving assembly then creates shaped spline grooves on the pump shaft. After each spline groove is processed, a rotation system consisting of a driven gear ring, a rotating motor, and a drive gear rotates the pump shaft by a certain angle, allowing for the processing of the next spline groove. After all spline grooves are processed, the grinding assembly reciprocates to grind the spline grooves, removing burrs. This method meets the processing requirements of high-lift circulating pump spline shafts.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the usage state of this utility model;

[0019] Figure 2 This is a schematic diagram of the pump shaft before machining in this utility model;

[0020] Figure 3 This is a schematic diagram of the pump shaft after machining in this utility model;

[0021] Figure 4 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 5 This is a structural diagram of the present invention during loading / unloading;

[0023] Figure 6 This is a structural diagram of the present invention during loading / unloading;

[0024] In the attached diagram, the components represented by each number are as follows:

[0025] 1-Base plate, 2-Slewing bearing, 3-Clamping assembly, 301-Upright seat, 302-Hydraulic expansion sleeve, 303-Driven gear ring, 304-Driving gear, 4-Upright plate, 5-Positioning support shaft, 6-Grinding assembly, 601-Mounting ring, 602-Axial push rod, 603-Guide rod, 604-Support rod, 605-Grinding ring, 7-Cutting and grooving assembly, 701-Linear guide pair, 702-Lifting push rod, 703-Velve cutting tool, 8-Pump shaft, 801-Pump shaft body, 802-Positioning groove, 803-Cylindrical protrusion, 804-Spline groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] See Figures 1-6 As shown, this embodiment provides a machining fixture for a high-lift circulating pump spline shaft. The fixture includes a base plate 1, a slewing bearing 2, a clamping assembly 3, a vertical plate 4, a positioning support shaft 5, a grinding assembly 6, and a cutting and grooving assembly 7. The clamping assembly 3 is mounted on one end of the base plate 1 via the slewing bearing 2, and the positioning support shaft 5 is mounted on the other end of the base plate 1 via the vertical plate 4. The cutting and grooving assembly 7 for forming the spline groove 804 is mounted on the upper side of the base plate 1. The grinding assembly 6 for grinding the spline groove 804 is also mounted on the vertical plate 4.

[0028] In this embodiment, the pump shaft 8 to be processed includes a pump shaft body 801, a positioning groove 802 is provided at the outer end of the pump shaft body 801, and a cylindrical protrusion 803 is provided near the outer end of the pump shaft body 801 as a spline groove forming part.

[0029] In this embodiment, the clamping assembly 3 includes a stand 301, in which a hydraulic expansion sleeve 302 is movablely restricted, and a driven gear ring 303 is fixed on the outer side of the outer end of the hydraulic expansion sleeve 302. A flipping motor is embedded in the stand 301, and a drive gear 304 that meshes with the driven gear ring 303 is installed at the output end of the flipping motor.

[0030] In this embodiment, the outer end of the positioning support shaft 5 is provided with a positioning protrusion that cooperates with the positioning groove 802.

[0031] In this embodiment, the clamping assembly 3 can rotate with the slewing bearing 2 until the axis of the hydraulic expansion sleeve 302 coincides with the axis of the positioning support shaft 5.

[0032] In this embodiment, the hydraulic expansion sleeve 302 in the clamping assembly 3 cooperates with the pump shaft body 801 of the pump shaft 8. When the hydraulic expansion sleeve 802 is subjected to pressure from the pressure bolt or the external working pump, it can tightly lock the pump shaft 8 inserted therein. When the hydraulic expansion sleeve 802 is released from pressure, the pump shaft 8 can slide freely under the drive of the external manipulator.

[0033] In this embodiment, the cutting and grooving assembly 7 consists of a linear guide rail pair 701, a lifting push rod 702, and a rotary cutting tool 703. The slide rail of the linear guide rail pair 701 is fixed on the base plate 1, and the rotary cutting tool 703, which can rotate independently, is installed on the upper side of the slider of the linear guide rail pair 701 through the lifting push rod 702.

[0034] In this embodiment, the grinding assembly 6 includes a mounting ring 601, an axial push rod 602, a guide rod 603, a support rod 604, and a grinding ring 605. The axial push rod 602 is mounted on the vertical plate seat 4. The movable end of the axial push rod 602 is fixed with the mounting ring 601. One side of the mounting ring 601 is fixed with a guide rod 603 that penetrates the vertical plate seat 4. The other side of the mounting ring 601 is connected to the grinding ring 605 via several support rods 604 evenly distributed around the positioning support shaft 5.

[0035] In this embodiment, the inner wall of the grinding ring 605 is evenly distributed with grinding protrusions along the circumference, and the cross-sectional shape of the grinding protrusions matches the cross-sectional shape of the spline groove 804.

[0036] A specific application of this embodiment is as follows: This machining fixture mainly consists of a base plate 1, a rotary bearing 2, a clamping assembly 3, a vertical plate 4, a positioning support shaft 5, a grinding assembly 6, and a cutting and grooving assembly 7. First, a robotic arm is used to insert the pump shaft 8 into the hydraulic expansion sleeve 302 of the clamping assembly 3. Figure 6 As shown; the slewing bearing 2 drives the clamping assembly 3 to rotate, pushing the pump shaft 8 to abut against the positioning support shaft 5. The hydraulic expansion sleeve 302 in the clamping assembly 3 holds the pump shaft 8 in place. The cutting and grooving assembly 7 creates a shaped spline groove 804 on the pump shaft 8. After each spline groove 804 is processed, the pump shaft 8 is rotated by a turning system consisting of the driven gear ring 303, the turning motor, and the driving gear 304 to proceed with the processing of the next spline groove 804. After all spline grooves 804 are processed, the grinding assembly 6 reciprocates to grind the spline grooves 804 to remove burrs. The clamping assembly 3 releases the pump shaft 8, and the robotic arm first separates the pump shaft 8 from the positioning support shaft 5. Figure 5 As shown, the slewing bearing 2 then drives the clamping assembly 3 to rotate, as... Figure 6 As shown, the completed pump shaft 8 can now be pulled out, and the next loading operation can begin.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A machining fixture for the splined shaft of a high-lift circulating pump, characterized in that, The machining fixture includes a base plate, a slewing bearing, a clamping assembly, a vertical plate, a positioning support shaft, a grinding assembly, and a cutting and grooving assembly. One end of the base plate is fitted with the clamping assembly via the slewing bearing, and the other end is fitted with the positioning support shaft via the vertical plate. A cutting and grooving assembly for forming spline grooves is mounted on the upper side of the base plate, and a grinding assembly for grinding the spline grooves is also mounted on the vertical plate. The clamping assembly includes a vertical base, in which a hydraulic expansion sleeve is movable and restricted. A driven gear ring is fixed to the outer side of the outer end of the hydraulic expansion sleeve. A tilting motor is embedded in the vertical base, and a driving gear that meshes with the driven gear ring is mounted on the output end of the tilting motor.

2. The machining fixture for the splined shaft of the high-lift circulating pump according to claim 1, characterized in that, The pump shaft to be processed includes a pump shaft body, a positioning groove is provided at the outer end of the pump shaft body, and a cylindrical protrusion is provided near the outer end of the pump shaft body as a spline groove forming part.

3. The machining fixture for the splined shaft of the high-lift circulating pump according to claim 2, characterized in that, The outer end of the positioning support shaft is provided with a positioning protrusion that mates with the positioning groove.

4. The machining fixture for the splined shaft of the high-lift circulating pump according to claim 3, characterized in that, The clamping assembly can rotate with the slewing bearing until the axis of the hydraulic expansion sleeve coincides with the axis of the positioning support shaft.

5. The machining fixture for the splined shaft of the high-lift circulating pump according to claim 4, characterized in that, In the clamping assembly, the hydraulic expansion sleeve cooperates with the pump shaft body. When the hydraulic expansion sleeve is subjected to pressure from the pressurizing bolt or the external working pump, it can tightly lock the pump shaft inserted therein. When the hydraulic expansion sleeve is depressurized, the pump shaft can slide freely under the drive of the external manipulator.

6. The machining fixture for the splined shaft of the high-lift circulating pump according to claim 5, characterized in that, The cutting and grooving assembly consists of a linear guide rail pair, a lifting push rod, and a rotary cutting tool. The slide rail of the linear guide rail pair is fixed on the base plate, and the rotary cutting tool, which can rotate independently, is mounted on the upper side of the slider of the linear guide rail pair through the lifting push rod.

7. The machining fixture for the splined shaft of the high-lift circulating pump according to claim 6, characterized in that, The grinding assembly includes a mounting ring, an axial push rod, a guide rod, a support rod, and a grinding ring. The axial push rod is mounted on the vertical plate base, and the movable end of the axial push rod is fixed with the mounting ring. One side of the mounting ring is fixed with a guide rod that penetrates the vertical plate base, and the other side of the mounting ring is connected to the grinding ring via several support rods evenly distributed around the positioning support shaft.

8. The machining fixture for the splined shaft of the high-lift circulating pump according to claim 7, characterized in that, The inner wall of the grinding ring is evenly distributed with grinding protrusions along the circumference, and the cross-sectional shape of the grinding protrusions matches the cross-sectional shape of the spline groove.

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