Polishing clamp for thrust block

Abstract

The utility model relates to the technical field of clamps, in particular to a grinding clamp for a thrust block. The utility model provides a grinding clamp for a thrust block. The grinding clamp comprises a chuck used for clamping and limiting the thrust block and a pressing disc arranged on the upper portion of the chuck and used for providing pressure in the vertical direction so that the surface of the thrust block can be attached to a grinding tool, and the outer portion of the pressing disc is further sleeved with a protective sleeve playing a role in protecting the pressing disc; due to the fact that the grinding clamp is provided with the chuck, the pressing disc and the protective sleeve, batch grinding and clamping operation of the thrust blocks can be achieved through the chuck and the pressing disc, the abrasion rate of the grinding clamp can be reduced through the protective sleeve, and the problem that in the prior art, a grinding clamp for batch clamping of the thrust blocks is lacked is solved. And therefore, the grinding efficiency of the thrust block is low, and the consumption requirement cannot be met.

Description

Technical Field

[0001] This application relates to the technical field of jigs, and particularly to a grinding jig for thrust blocks. Background Art

[0002] The design and use of thrust bearings are to bear axial loads on submersible motors. The applicant's CN211117133U discloses an automatically aligning thrust bearing, which consists of a bearing seat and thrust blocks. The number of thrust blocks is three. This solution realizes the batch production of thrust blocks. Since thrust blocks are vulnerable parts, the consumption is relatively large. Therefore, there is an urgent need to design a grinding jig that can achieve batch clamping operations for thrust blocks to effectively improve the grinding efficiency of thrust blocks. Summary of the Utility Model

[0003] The problem to be solved by this application is that there is a lack of a grinding jig for batch clamping of thrust blocks in the prior art, resulting in low grinding efficiency of thrust blocks and inability to meet the consumption demand.

[0004] To solve the above technical problems, this application provides a grinding jig for thrust blocks, which includes a chuck for clamping and limiting the thrust blocks, and a pressure plate arranged above the chuck to provide a vertical pressure to make the surface of the thrust block fit with the grinding tool. A protective sheath is also sleeved outside the pressure plate to protect it.

[0005] Since the grinding jig of this application is designed with a chuck, a pressure plate and a sheath, it can not only achieve batch grinding and clamping operations of thrust blocks through the chuck and the pressure plate, but also reduce the wear rate of the grinding jig through the sheath, solving the problem that there is a lack of a grinding jig for batch clamping of thrust blocks in the prior art, resulting in low grinding efficiency of thrust blocks and inability to meet the consumption demand. Brief Description of the Drawings

[0006] Figure 1 Schematic perspective view of the embodiment.

[0007] Figure 2 Schematic front view of the embodiment.

[0008] Figure 3 Schematic top view of the embodiment.

[0009] Figure 4 Schematic bottom view of the embodiment.

[0010] Figure 5 Schematic sectional view of the embodiment.

[0011] Figure 6 Schematic view of the structure of the chuck and the groove part.

[0012] Figure 7 Schematic structural diagram of the thrust block and the slot hole

[0013] Figure 8 Schematic structural diagram of the positioning post and the supporting protrusion

[0014] In the figure: 1, counterweight; 2, through hole; 3, pressure plate; 4, sheath; 5, chuck; 6, groove part; 7, thrust block; 8, slot hole; 9, positioning post; 10, supporting protrusion Specific implementation manners

[0015] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application Embodiment

[0016] The present application relates to a grinding fixture for a thrust block 7, as Figure 1-8 shown. The grinding fixture includes a chuck 5 for clamping and limiting the thrust block 7, and a pressure plate 3 arranged above the chuck 5 for providing a vertical pressure to make the surface of the thrust block 7 fit with the grinding tool. In order to reduce the collision or friction between the pressure plate 3 and the grinding tool, a sheath 4 for protecting it is sleeved outside the pressure plate 3

[0017] In order to improve the batch grinding operation of the thrust block 7, the number of chucks 5 is multiple, and they are evenly key-connected directly below the pressure plate 3

[0018] A counterweight 1 detachably connected to the pressure plate 3 is also arranged directly above the pressure plate 3, so that the pressure applied by the pressure plate 3 to the thrust block 7 can be increased by means of the counterweight 1, making the thrust block 7 in stable contact with the grinding tool

[0019] In order to facilitate the connection between the counterweight 1 and the pressure plate 3, through holes 2 with equal diameters are formed at the axial center positions of the counterweight 1 and the pressure plate 3. By placing a shaft rod with a suitable size inside the through hole 2, a convenient connection operation between the connections can be achieved. In order to avoid interference between the grinding tool and the counterweight 1, a groove part 6 recessed inward is formed at the outer edge of the counterweight 1

[0020] In order to enable the thrust block 7 to fully contact the grinding tool for effective grinding operation, a plurality of slot holes 8 that can match the positioning posts 9 are evenly arranged circumferentially on the chuck 5. To avoid processing errors in the thrust block 7 that may prevent the positioning post 9 from extending into the slot hole 8, the diameter of the slot hole 8 is 1.2 to 2.5 times the diameter of the positioning post 9. This allows the thrust block 7 to be in a slightly wobbling state inside the slot hole 8. Since the positioning post 9 is biased towards the outside of the thrust block 7, when the thrust blocks 7 are stacked, they are inclined towards the inside under the action of their own gravity (the side wall of the positioning post 9 abuts against the upper edge of the slot hole 8). Only under the pressure of the pressure plate 3 and the counterweight 1 will the entire lower surface fully contact the grinding tool.

[0021] Based on CN211117133U, the thrust block 7 is of a sector structure. A positioning post 9 and a support protrusion 10 are provided at the bottom of the thrust block 7. A positioning hole is provided on the upper end face of the corresponding bearing seat. When the thrust block 7 is arranged on the bearing seat, the positioning post 9 is located in the positioning hole, and the support protrusion 10 abuts against the upper end face of the bearing seat; the positioning post 9 is used to limit the longitudinal movement of the thrust block 7 on the bearing seat, and the support protrusion 10 is used to support the thrust block 7 and can also enable a certain range of swing of the thrust block 7.

[0022] The positioning post 9 is a cylinder perpendicular to the lower end face of the thrust block 7; the positioning hole is a cylindrical blind hole with the setting direction the same as the axial direction of the bearing seat; the diameter of the positioning post 9 is smaller than the diameter of the positioning hole, enabling the positioning post 9 to achieve a small amplitude of swing within the positioning hole, thus ensuring the swing of the thrust block 7 on the bearing seat. Specifically, the diameter difference between the positioning post 9 and the positioning hole can be 2 to 3 millimeters.

[0023] The support protrusion 10 is an arc-shaped protrusion, that is, the end of the support protrusion 10 away from the thrust block 7 is an arc-shaped surface, which can ensure the swing of the thrust block 7 in all directions. The support protrusion 10 can be a hemispherical protrusion.

[0024] The positioning post 9 and the support protrusion 10 can be arranged in such a way that two positioning posts 9 are symmetrically arranged on the thrust block 7 and are close to the two side edges of the thrust block 7, and the support protrusion 10 is arranged at the middle position between the two positioning posts 9.

[0025] During use, the pressure plate 3 is flipped 180° so that its bottom face is upward. Then, a plurality of chucks 5 are key-connected to the bottom of the pressure plate 3. Next, a plurality of thrust blocks 7 are arranged in sequence along the slot holes 8 of the chuck 5. Then, hold the thrust blocks 7 by hand. At this moment, at least two people are required to operate. Then, flip the pressure plate 3 back to its original position and place it on the upper part of the grinding stone inside the grinding tool, so that the lower surface of the thrust block 7 abuts against the grinding stone. Then, by adding a counterweight 1, the contact between the thrust block 7 and the grinding stone becomes more stable, and the collision wear of the pressure plate 3 during the grinding process is reduced through the sheath 4 sleeved on the pressure plate 3.

[0026] In general, terms should be understood, at least in part, in light of their use in the context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Similarly, at least in part depending on the context, terms such as "a" or "the" can also be understood to convey a singular usage or a plural usage.

[0027] It should be readily understood that the terms "on", "above", and "over" in this disclosure should be construed in the broadest manner such that "on" not only means "directly on something", but also includes the meaning of "on something" with intermediate features or layers therebetween, and "above" or "over" not only includes the meaning of "above" or "over something", but can also include the meaning of "above" or "over something" with no intermediate features or layers therebetween (i.e., directly on something).

[0028] In addition, spatial relative terms may be used herein for convenience of description, such as "below", "beneath", "under", "above", "over", etc., to describe the relationship of one element or feature to another as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation other than the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatial relative descriptors used herein may be interpreted accordingly.

[0029] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A grinding fixture for a thrust block, characterized in that: It includes a chuck for clamping and limiting the thrust block, and a pressure plate arranged above the chuck to provide a vertical pressure so that the surface of the thrust block fits with the grinding tool. A protective sheath is also sleeved outside the pressure plate to protect it; Positioning posts and supporting protrusions are provided at the bottom of the thrust block; A plurality of slot holes capable of matching with the positioning posts are evenly arranged in the circumferential direction of the chuck; The diameter size of the slot hole is 1.2 to 2.5 times the diameter size of the positioning post.

2. The grinding fixture according to claim 1, wherein: The number of chucks is multiple, and they are evenly key-connected directly below the pressure plate.

3. The grinding fixture according to claim 1, characterized in that: A counterweight block detachably connected to the pressure plate is arranged directly above the pressure plate.

4. The grinding fixture according to claim 1, characterized in that: Through holes with equal diameters are formed at the axial center positions of the counterweight block and the pressure plate.

5. The grinding fixture according to claim 1, wherein: A recessed groove portion is also formed on the outer edge of the counterweight block and recesses inward.

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