Grinding head for ball socket of pump main shaft

Abstract

The utility model provides a grinding head for a ball socket of a pump main shaft, which aims at solving the problem that the smoothness, the shape and the size precision of the ground ball socket are not ideal enough due to the fact that the existing grinding rod is rigidly connected with a motor, and is characterized in that the upper end of the grinding rod of the grinding head is hinged with an output shaft of the motor; the grinding rod can adaptively stretch and retract along with the rotation of the pump main shaft and can also adaptively swing in the ball socket, so that the inner wall of the ball socket is uniformly ground, the smoothness, the shape and the size precision of the machined ball socket are high, and the adaptation degree of the ball socket and a bearing rolling element is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pump main shaft processing, and particularly relates to a ball socket grinding head for a pump main shaft. Background Art

[0002] The pump main shaft is a core component in a pump, responsible for transmitting the rotational motion of the motor to the impeller of the pump, causing the impeller to rotate, thereby realizing the transportation of liquid. The ball socket on the pump main shaft is used to cooperate with the rolling elements (such as balls or rollers) of the bearing to support the rotation of the main shaft.

[0003] In the prior art, a grinding machine is used to automatically grind the ball socket. For example, a patent with the authorization publication number CN 203266383U discloses a ball socket grinding machine. Its grinding rod can elastically move up and down under the action of a spring and can always press against the workpiece rotating on the workbench during the processing. Among them, due to the rigid connection between the grinding rod and the motor, the surface finish, shape, and dimensional accuracy of the ball socket after grinding are not ideal enough. Content of the Utility Model

[0004] Based on this, in view of the above technical problems, a ball socket grinding head for a pump main shaft is provided.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A ball socket grinding head for a pump main shaft includes a grinding rod that rotates self - adaptively under the drive of a motor and can elastically move up and down. Its characteristic lies in that the upper end of the grinding rod is hinged to the output shaft of the motor.

[0007] The upper end of the grinding rod of the grinding head of the utility model is hinged to the output shaft of the motor, enabling the grinding rod to not only adaptively expand and contract along with the rotation of the pump main shaft but also adaptively swing in the ball socket, thereby realizing uniform grinding of the inner wall of the ball socket. After processing, the surface finish, shape, and dimensional accuracy of the ball socket are high, improving the adaptability with the rolling elements of the bearing. Description of the Drawings

[0008] The following combines the drawings and specific embodiments to elaborate on the utility model in detail:

[0009] Figure 1 is the structural schematic diagram of the utility model;

[0010] Figure 2 is the structural schematic diagram of the grinding rod of the utility model. Specific Embodiments

[0011] The following will illustrate the implementation methods of the utility model in conjunction with the drawings in the specification. It should be noted that the implementation methods involved in this specification are not exhaustive and do not represent the only implementation methods of the utility model. The following corresponding embodiments are only for the purpose of clearly illustrating the utility model content of the utility model patent, and are not intended to limit its implementation methods. For ordinary technicians in this field, different forms of changes and modifications can be made on the basis of the description of this embodiment. All obvious changes or modifications that belong to the technical concept and utility model content of the utility model are also within the scope of protection of the utility model.

[0012] like Figure 1 As shown, an embodiment of the utility model provides a pump spindle ball socket grinding head, including a support frame 1210, a slide seat 1220, a motor 1230, a transmission box 1240, a power assembly 1250 and a plurality of grinding rods 1260.

[0013] The support frame 1210 is fixed on the grinding table 2 and has a slide rail 1211 in the up and down directions and a limit block 1212 on the top.

[0014] The slide seat 1220 is disposed on the slide rail 1211 , and can slide up and down on the support frame 1210 , and is limited by the limit block 1212 .

[0015] The motor 1230 is fixed on the slide 1220 through the transmission box 1240 , and the output shaft of the motor 1230 is synchronously connected with a plurality of transmission shafts through transmission gears in the transmission box 1240 .

[0016] A protective cover 1270 is connected to the lower side of the transmission box 1240 .

[0017] The power component 1250 is used to drive the slide 1220 to rise and fall. In the present embodiment, the power component 1250 adopts a lead screw electric cylinder, which is composed of a lead screw 1251 and a third motor 1252. The lead screw 1251 is arranged in the up and down directions and is rotatably fixed on the support frame 1210, and its nut seat is connected to the slide 1220. The third motor 1252 is fixed on the mounting seat 1213 of the support frame 1210, and its output shaft is connected to the lower end of the lead screw 1251.

[0018] Multiple grinding rods 1260 correspond one by one to multiple transmission shafts. The upper end of each grinding rod 1260 is hinged to the corresponding transmission shaft through a horizontal hinge shaft, thereby realizing indirect hinge connection between the upper end of the grinding rod 1260 and the output shaft of the motor 1230. Driven by the motor 1230, the grinding rod 1260 can rotate.

[0019] Among them, Figure 2 As shown, the grinding rod 1260 includes a sleeve 1261 , a movable rod 1262 and a spring 1263 .

[0020] The upper end of the sleeve 1261 is hinged to the corresponding transmission shaft. An axial sliding groove 1261a is provided thereon. The upper part of the movable rod 1262 extends into the sleeve 1261. A radial pin 1262a is provided thereon. The pin 1262a passes through the sliding groove 1261a, so that the upper part of the movable rod 1262 is in up-and-down sliding fit with the sleeve 1261. A spring 1263 is arranged in the sleeve 1261. Its two ends are respectively connected to the upper part of the movable rod 1262 and the inner top wall of the sleeve 1261, realizing the elastic up-and-down telescoping of the grinding rod 1260, enabling the grinding rod 1260 to adaptively telescope during the rotation of the pump main shaft. At the same time, since the upper end of the grinding rod 1260 is hinged to the corresponding transmission shaft, it can also adaptively swing during the rotation of the pump main shaft, thereby enabling uniform grinding of the inner wall of the ball socket.

[0021] A grinding block 1262b is provided at the lower end of the movable rod 1262. The grinding block 1262b is spherical.

[0022] In order to facilitate replacing the grinding block 1262b with a corresponding size according to different sizes of the ball socket, the lower end of the movable rod 1262 is detachably connected to the grinding block 1262b, such as by a threaded connection.

[0023] During grinding, first, the pump main shaft is fixed to the grinding table 2, and grinding sand is added to the ball socket of the pump main shaft. Then, the power assembly 1250 drives the slide 1220 to descend to a predetermined position, so that the grinding block 1262b at the lower end of the grinding rod 1260 just extends into the corresponding ball socket and contacts the inner wall of the ball socket. Next, the grinding table 2 and the motor 1230 are started simultaneously, so that the pump main shaft rotates on the grinding table 2 and the grinding rod 1260 rotates self - adaptively, realizing uniform grinding of the inner wall of the ball socket.

[0024] As can be seen from the above, a ball socket grinding head for a pump main shaft provided by an embodiment of the present utility model has the upper end of its grinding rod hinged to the corresponding transmission shaft, thereby realizing the indirect hinging of the upper end of the grinding rod to the output shaft of the motor, enabling the grinding rod not only to adaptively telescope with the rotation of the pump main shaft, but also to adaptively swing in the ball socket, thereby realizing uniform grinding of the inner wall of the ball socket. After processing, the surface finish, shape, and dimensional accuracy of the ball socket are high, improving the adaptability to the rolling elements of the bearing.

[0025] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these changes and modifications.

Claims

1. A ball socket grinding head for a pump main shaft, comprising a grinding rod that rotates self - driven by a motor and can elastically expand and contract vertically, characterized in that, The upper end of the grinding rod is hinged to the output shaft of the motor.

2. The ball socket grinding head for the pump main shaft according to claim 1, wherein The grinding rod includes a sleeve, a movable rod and a spring. The upper part of the movable rod is slid up and down in the sleeve. The lower end of the movable rod is provided with a grinding block. The spring is arranged in the sleeve, and its two ends are respectively connected to the upper part of the movable rod and the inner top wall of the sleeve.

3. The ball socket grinding head for the pump main shaft according to claim 2, characterized in that, The lower end of the movable rod is detachably connected to the grinding block.

4. A ball socket grinding head for a pump main shaft according to claim 1, characterized in that, It also includes a support frame, a slide seat and a power component for driving the slide seat to rise and fall. The support frame is fixed on the table top. The slide seat slides up and down with the support frame and is connected to the power component. The motor is fixed on the slide seat, and its output shaft is connected to the transmission shaft. The transmission shaft is hinged to the upper end of the grinding rod.

5. A ball socket grinding head for a pump main shaft according to claim 4, characterized in that, The power assembly adopts a lead screw electric cylinder.

6. The ball socket grinding head for the pump main shaft according to claim 4, characterized in that The top of the support frame is provided with a limiting block for limiting the sliding seat.

7. A ball socket grinding head for a pump main shaft according to any one of claims 4-6, characterized in that There are multiple transmission shafts and grinding rods, the output shaft of the motor is synchronously connected with the multiple transmission shafts, and the multiple transmission shafts are respectively hinged to the upper ends of the corresponding grinding rods.

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