Tail shaft copper bush eccentricity adjusting tool

Abstract

The utility model discloses a stern shaft copper bush eccentricity adjusting tool which comprises a clamping assembly and a clamping base, the clamping assembly comprises a chuck and a plurality of clamping jaws, the clamping jaws are connected to the chuck, the clamping jaws can move back and forth on the chuck towards the side face of the chuck, and the clamping base is connected with the chuck. In this way, a clamping area is formed on the first face of the chuck when the multiple clamping jaws move, a connecting piece is connected to the second face, deviating from the first face of the chuck, of the chuck, and the connecting piece is connected to a lathe tailstock. A plurality of openings are formed in the side face of the clamping base, the openings are matched with the clamping jaws in shape, the number of the openings is matched with the number of the clamping jaws, the clamping base is connected to the first face of the chuck, the openings are aligned with the clamping jaws, and the clamping jaws can move in the openings; when the tail shaft copper sleeve is subjected to eccentric adjustment, the tail shaft copper sleeve is placed on the clamping seat, the multiple clamping jaws move towards the tail shaft copper sleeve located on the clamping seat, and the tail shaft copper sleeve is clamped.

Description

Technical Field

[0001] The utility model belongs to the technical field of ships, and particularly relates to an eccentric adjustment tool for a stern shaft copper sleeve. Background Art

[0002] As the main carrier of international trade goods, ships must be in good operating condition to ensure normal navigation, and the stern shaft-stern bearing system is a key component of the ship. During the stern shaft-stern bearing system, when the stern bearing needs to be replaced, the matching stern shaft copper sleeve will be replaced accordingly.

[0003] Figure 1 Schematic diagram of the cross section of the existing stern shaft copper sleeve provided by the utility model, such as Figure 1 As shown, the outer circle 100 and the inner circle 200 of the stern shaft copper sleeve, the center 101 of the outer circle 100 and the center 201 of the inner circle 200 are as shown in FIG. Figure 1 shown.

[0004] As more and more ship repair projects are undertaken, the number of copper sleeves for stern bearing replacements has gradually increased. However, due to the working environment of the ship and the material of the original bearing, it is necessary to re-align the new copper sleeve, which may cause the inner and outer circles of the new copper sleeve to be eccentric. Figure 1 In the case shown, the centers of the outer circle and the inner circle of the copper sleeve are not on the same axis, which affects the subsequent use of the copper sleeve and further affects the stern shaft-stern bearing system. Therefore, it is necessary to process the newly equipped copper sleeve so that the inner and outer circles of the newly equipped copper sleeve are eccentrically on the same axis. Therefore, a tooling is urgently needed to quickly adjust the inner and outer circle axes of the copper sleeve during the processing of the newly equipped copper sleeve. Utility Model Content

[0005] The utility model aims to provide a stern shaft copper sleeve eccentric adjustment tool to solve the problem of how to adjust the inner and outer circular axes of the stern shaft copper sleeve when processing the stern shaft copper sleeve in the prior art.

[0006] The utility model provides an eccentric adjustment tool for a stern shaft copper sleeve, the eccentric adjustment tool comprising a clamping assembly and a clamping seat, wherein the clamping assembly comprises a chuck and a plurality of claws, the plurality of claws are connected to the chuck, the claws can move back and forth on the chuck toward the side of the chuck, so that a clamping area is formed on the first surface of the chuck when the plurality of claws move, a connecting piece is connected to the second surface of the chuck which is away from the first surface of the chuck, and the connecting piece is connected to the tailstock of a lathe.

[0007] A plurality of openings are formed on the side of the base, the shapes of the openings and the claws match each other, and the number of the openings matches the number of the claws. The base is connected to the first surface of the chuck and the openings are aligned with the claws, and the claws can move in the openings.

[0008] Wherein, when the stern shaft copper sleeve is eccentrically adjusted, the stern shaft copper sleeve is placed on the clamping seat, and the plurality of clamping claws move toward the stern shaft copper sleeve located on the clamping seat to clamp the stern shaft copper sleeve.

[0009] Preferably, the holder is provided with two avoidance openings at the side wall position of each of the openings, and the two avoidance openings are respectively arranged at the corner positions of the openings.

[0010] Preferably, a through hole is formed on the holder, and a screw is disposed on the through hole, and the screw is used to connect the holder to the first surface of the chuck.

[0011] Preferably, the card seat is a square card seat, a circular card seat, or an elliptical card seat, and the thickness of the square card seat, the circular card seat, or the elliptical card seat is 30 mm to 45 mm.

[0012] Preferably, the clamping assembly may adopt a four-jaw chuck or a three-jaw chuck.

[0013] Preferably, the connecting piece adopts a Morse taper shank, one end of the Morse taper shank is connected to the chuck, and the other end of the Morse taper shank is connected to the ejector pin hole of the tailstock of the lathe.

[0014] Preferably, a groove is formed on the base, and the stern shaft copper sleeve can be inserted into the groove.

[0015] Preferably, the eccentric adjustment tool further includes a lathe chuck, and the lathe chuck is connected to the headstock of the lathe.

[0016] The utility model provides a stern shaft copper sleeve eccentricity adjustment tool. It is necessary to process a newly matched copper sleeve, place the stern shaft copper sleeve on a clamping seat, clamp the stern shaft copper sleeve by means of a clamping claw, and fix the clamping assembly to the tailstock of a lathe by means of a connecting piece, thereby fixing the stern shaft copper sleeve to the tailstock of the lathe, so that a clamping chuck is respectively provided at the front and rear of the lathe, and after the two ends of the stern shaft copper sleeve are clamped respectively, the clamping claws on the chuck are then calibrated to adjust the eccentricity, and the inner and outer circle axes of the copper sleeve can be quickly adjusted during the processing of the newly matched copper sleeve, so that the inner and outer circle eccentricities of the processed copper sleeve are on the same axis. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following will briefly introduce the drawings required for the description of the embodiment. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 It is a cross-sectional schematic diagram of the existing stern shaft copper sleeve provided by the utility model;

[0019] Figure 2 It is a structural schematic diagram of the eccentric adjustment tooling of the stern shaft copper sleeve provided by the utility model;

[0020] Figure 3 It is a structural schematic diagram of the eccentric adjustment tooling of the stern shaft copper sleeve provided by the utility model;

[0021] Figure 4 It is a structural schematic diagram of the card holder provided by the utility model;

[0022] Figure 5 It is a structural schematic diagram of a card holder provided by another embodiment of the utility model;

[0023] Figure 6 It is a cross-sectional schematic diagram of a stern shaft copper sleeve processed by an eccentric adjustment tool provided by the utility model. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is a description of the embodiments of the present invention based on its overall structure.

[0028] Figure 2 and Figure 3 This is a schematic diagram of the structure of the eccentric adjustment tooling for the stern shaft copper sleeve provided by the utility model. Figure 2 and Figure 3 The eccentric adjustment tooling includes a clamping assembly 1 and a clamping seat 2, wherein the clamping assembly 1 includes a chuck 11 and a plurality of claws 12, wherein the plurality of claws 12 are connected to the chuck 11, and the claws 12 can move back and forth on the chuck 11 toward the side of the chuck 11, so that a clamping area 120 is formed on the first surface of the chuck 11 when the plurality of claws 12 move, and a connecting member 3 is connected to the second surface of the chuck 11 that is away from the first surface of the chuck 11, and the connecting member 3 is connected to the tailstock of the lathe.

[0029] In a specific embodiment, the clamping assembly 1 may be a four-jaw chuck or a three-jaw chuck. For example, in this embodiment, the clamping assembly 1 is a four-jaw chuck, and the jaws on the four-jaw chuck can clamp the stern shaft copper sleeve.

[0030] Figure 4 This is a schematic diagram of the structure of the card holder provided by the utility model, see Figure 2 and Figure 4 A plurality of openings 21 are formed on the side of the base 2, the shapes of the openings 21 and the claws 12 match each other, and the number of the openings 21 matches the number of the claws 12. The base 2 is connected to the first surface of the chuck 11, and the openings 21 are aligned with the claws 12, and the claws 12 can move in the openings 21.

[0031] In a preferred embodiment, see Figure 4 The card holder 2 has two avoidance openings 22 at the side wall of each opening 21 , and the two avoidance openings 22 are respectively arranged at the corners of the opening 21 .

[0032] For details, see Figure 2 and Figure 4 When the clamping claw 12 moves on the chuck 11, it will also move in the opening 21 on the holder 2. If the side wall corners of the opening 21 are set at right angles, the clamping claw 12 will directly scrape against the right angle corners of the side wall of the opening 21 when moving, causing wear on the opening 21 and the clamping claw 12. Therefore, two avoidance openings 22 are provided at the side wall position of each opening 21. The two avoidance openings 22 are set in a circular shape. When the clamping claw 12 moves in the opening 21, due to the provision of the avoidance openings 22, the clamping claw 12 can avoid wear when it moves to the side wall of the opening 21.

[0033] For details, see Figure 2 and Figure 4 , the card seat 2 is a square card seat or a round card seat or an elliptical card seat, and the thickness of the square card seat or the round card seat or the elliptical card seat is 30mm to 45mm. For example, in this embodiment, the card seat 2 is a square card seat, and the thickness of the square card seat is 30mm. In some other embodiments, the shape and thickness of the card seat 2 are determined according to the actual situation of the new matching stern shaft copper sleeve that needs to be processed.

[0034] Specifically, the depth of the opening 21 on the clamping seat 2 is set according to the diameter of the stern shaft copper sleeve that needs to be clamped, and the width of the opening 21 is set according to the width of the clamping claw 12 .

[0035] In a preferred embodiment, the connector 3 adopts a Morse taper shank, one end of which is connected to the chuck 11, and the other end of which is connected to the ejector hole of the tailstock of the lathe. Specifically, for example, a Morse taper No. 5 shank can be used. In some other embodiments, the connector 3 can be arranged according to the connection hole on the chuck 11 and the ejector hole on the tailstock of the lathe.

[0036] Specifically, the eccentric adjustment tool also includes a lathe chuck, and the lathe chuck is connected to the head of the lathe.

[0037] Next, combine Figure 1-Figure 6 The working principle of the eccentric adjustment tool provided in this embodiment is described in detail so that those skilled in the art can better understand the utility model, which is specifically described as follows:

[0038] like Figure 1 As shown in FIG. 1 , the centers of the outer circle 100 and the inner circle 200 of the newly matched stern shaft copper sleeve are not on the same straight line, so it is necessary to Figure 1 The stern shaft copper sleeve shown in the figure is processed, and at present a lathe is used to process it.

[0039] A lathe is a machine tool that mainly uses a turning tool to perform turning processing on a rotating workpiece. The clamping method of an existing lathe is that a chuck is clamped at one end and turning processing is performed at the other end. A tailstock is installed on the body guide rail of the lathe, and the tailstock can move longitudinally along the guide rail. A thimble is installed on the tailstock. For a long workpiece, after one end is clamped with a chuck, the workpiece will hang slightly due to the influence of the workpiece's own weight. Therefore, an thimble hole needs to be processed at the other end first, and then the thimble is used to tighten it to support the long workpiece.

[0040] Will Figure 1 When the stern shaft copper set shown in the figure is clamped on the lathe, first, the clamping seat 2 and the connecting piece 3 are installed on the chuck 11, and then the connecting piece 3 is connected to the ejector pin hole of the tailstock on the lathe, so that the entire clamping assembly 1 and the clamping seat 2 are fixed to the tailstock on the body rail. Figure 1 One end of the stern shaft copper sleeve shown in FIG. 1 is clamped on the chuck seat 2 on the chuck 11. Figure 1 The other end of the stern shaft copper sleeve shown in the figure is clamped to the chuck at one end of the lathe head, thereby forming two front and rear chucks on the body guide rail, and the two chucks are respectively clamped Figure 1 Finally, use the body rails to adjust the corresponding claws on the chuck. Figure 1 The stern shaft copper sleeve shown in the figure can quickly adjust the inner and outer circular axes of the stern shaft copper sleeve to adjust the eccentricity of the stern shaft copper sleeve.

[0041] Figure 6 : is a schematic cross-sectional view of the stern shaft copper sleeve processed by the eccentric adjustment tooling provided by the utility model, such as Figure 6 As shown, after using the above-mentioned eccentric adjustment tooling, Figure 1 When machining the stern shaft copper sleeve shown in the figure, the axes of the inner circle 200 and the outer circle 100 of the stern shaft copper sleeve are quickly adjusted so that the center 201 of the inner circle 200 and the center 101 of the outer circle 100 of the machined stern shaft copper sleeve are on the same axis, so that the newly matched stern shaft copper sleeve meets the use requirements.

[0042] See also Figure 1 and Figure 6In this embodiment, the eccentric adjustment tooling is used to process the specific newly matched stern shaft copper sleeve, and the situation is as follows: before the eccentric adjustment tooling is used for processing, the eccentricity of the newly matched stern shaft copper sleeve is that the eccentricity of the center 201 of the inner circle 200 and the center 101 of the outer circle 100 are both 0.3mm. After the eccentric adjustment tooling is used for processing, the eccentricity of the center 201 of the inner circle 200 and the center 101 of the outer circle 100 are on the same axis and the eccentricity of the center 201 of the inner circle 200 and the center 101 of the outer circle 100 on the same axis is 0.5mm. The processed stern shaft copper sleeve meets the use requirements of the stern shaft-stern bearing system, so that the safety of the stern shaft-stern bearing system is guaranteed.

[0043] In the above-mentioned stern shaft copper sleeve eccentric adjustment tool, if only the clamping assembly 1 is used without the clamping seat 2, the clamping assembly 1 is a four-jaw chuck or a three-jaw chuck, and the four-jaw chuck or the three-jaw chuck is used to insert the clamped workpiece into the socket on the four-jaw chuck or the three-jaw chuck, and then the workpiece is clamped on the socket on the chuck by closing the jaws. However, since the outer diameter of the stern shaft copper sleeve to be processed is larger than the hole diameter on the four-jaw chuck or the three-jaw chuck, the stern shaft copper sleeve cannot be inserted into the socket on the four-jaw chuck or the three-jaw chuck. After the clamping base 2 is adopted, the clamping base 2 blocks the corresponding jacks on the four-jaw chuck or the three-jaw chuck and forms a placement area 24 that matches the outer diameter of the stern shaft copper sleeve. When the stern shaft copper sleeve is clamped, the end face of the stern shaft copper sleeve contacts the placement area 24 of the clamping base 2, and then the stern shaft copper sleeve is clamped on the placement area 24 of the clamping base 2 by retracting the jaws of the four-jaw chuck or the three-jaw chuck.

[0044] In the eccentric adjustment tooling for the stern shaft copper sleeve described above, if only the clamping assembly 1 is used without the holder 2, the stern shaft copper sleeve needs to be inserted into the chuck 11 and contact with the first surface of the chuck 11, so that the stern shaft copper sleeve can be clamped and its end face can be kept relatively fixed when the eccentricity is adjusted during the processing. However, this method will make the length of the stern shaft copper sleeve that needs to be inserted into the chuck 11 too long, which makes it difficult to operate the processing of the stern shaft copper sleeve during the machining process. When the holder 2 is used, the holder 2 can make the length of the stern shaft copper sleeve that needs to be inserted into the chuck 11 meet the processing requirements, and at the same time, the surface of the holder 2 in contact with the stern shaft copper sleeve is a smooth plane, which is conducive to the clamping of the stern shaft copper sleeve while ensuring that the stern shaft copper sleeve is clamped.

[0045] Therefore, the use of the clamping seat 2 can enable the stern shaft copper sleeve to be clamped and facilitate the machining of the stern shaft copper sleeve during the clamping process.

[0046] Figure 5 This is a schematic diagram of the structure of a card holder provided by another embodiment of the utility model, see Figure 5In an optional embodiment, a plurality of grooves 25 are formed on the base 2, and the width of the grooves 25 is set according to the thickness of the stern shaft copper sleeve. The end face of the stern shaft copper sleeve is directly inserted into the grooves 25, and then the stern shaft copper sleeve is clamped by the claws 12 on the chuck 11. Specifically, the depth of the grooves 25 is set to 0.5mm to 1.5mm to ensure that the machining of the stern shaft copper sleeve is not affected. When the stern shaft copper sleeve is assembled on the base 2, since the end face of the stern shaft copper sleeve is directly inserted into the grooves 25, when the claws 12 on the chuck 11 are not closed and clamped, the grooves 25 can limit the end face of the stern shaft copper sleeve to prevent the stern shaft copper sleeve from moving on the base 2, and the stern shaft copper sleeve is clamped when the claws 12 are closed.

[0047] In summary, the utility model provides a stern shaft copper sleeve eccentric adjustment tool, which can solve the problem of how to adjust the inner and outer circular axis lines of the stern shaft copper sleeve when processing the stern shaft copper sleeve in the prior art.

[0048] The foregoing descriptions of specific exemplary embodiments of the present invention are for the purpose of explanation and illustration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can make modifications, substitutions, variations and various selections and changes to the embodiments without creative contribution as needed after reading this specification without departing from the principles and purpose of the present invention, but they are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A stern shaft copper sleeve eccentric adjustment tool, characterized in that: The stern shaft copper sleeve eccentric adjustment tool comprises a clamping assembly (1) and a clamping seat (2), wherein the clamping assembly (1) comprises a chuck (11) and a plurality of claws (12), the plurality of claws (12) being connected to the chuck (11), the claws (12) being able to move back and forth on the chuck (11) toward the side of the chuck (11), so that when the plurality of claws (12) move, a clamping area (120) is formed on the first surface of the chuck (11), and a connecting piece (3) is connected to the second surface of the chuck (11) which is away from the first surface of the chuck (11), and the connecting piece (3) is connected to the tailstock of the lathe; A plurality of openings (21) are formed on the side of the clamping seat (2), the shapes of the openings (21) and the claws (12) match each other, and the number of the openings (21) matches the number of the claws (12). The clamping seat (2) is connected to the first surface of the chuck (11) and the openings (21) are aligned with the claws (12), and the claws (12) can move in the openings (21); When the stern shaft copper sleeve is eccentrically adjusted, the stern shaft copper sleeve is placed on the clamping seat (2), and a plurality of the clamping claws (12) move toward the stern shaft copper sleeve located on the clamping seat (2) to clamp the stern shaft copper sleeve.

2. The stern shaft copper sleeve eccentric adjustment tooling according to claim 1 is characterized in that: The card seat (2) is provided with two avoidance openings (22) at the side wall position of each opening (21), and the two avoidance openings (22) are respectively arranged at the corner positions of the opening (21).

3. The stern shaft copper sleeve eccentric adjustment tooling according to claim 1 is characterized in that: The holder (2) is provided with a through hole (23), and the through hole (23) is provided with a screw, and the screw is used to connect the holder (2) to the first surface of the chuck (11).

4. The eccentric adjustment tool for the stern shaft copper sleeve according to claim 1 is characterized in that: The card seat (2) is a square card seat, a circular card seat, or an elliptical card seat, and the thickness of the square card seat, the circular card seat, or the elliptical card seat is 30 mm to 45 mm.

5. The eccentric adjustment tool for the stern shaft copper sleeve according to claim 1 is characterized in that: The clamping assembly (1) may adopt a four-jaw chuck or a three-jaw chuck.

6. The eccentric adjustment tool for the stern shaft copper sleeve according to claim 1 is characterized in that: The connecting piece (3) adopts a Morse taper shank, one end of which is connected to the chuck (11), and the other end of which is connected to the ejector pin hole of the tailstock of the lathe.

7. The eccentric adjustment tool for the stern shaft copper sleeve according to claim 1 is characterized in that: A groove (25) is formed on the base (2), and the stern shaft copper sleeve can be inserted into the groove (25).

8. The eccentric adjustment tool for the stern shaft copper sleeve according to claim 1 is characterized in that: The eccentricity adjustment tool also includes a lathe chuck, and the lathe chuck is connected to the head of the lathe.

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