Tail shaft infield machining tool

Abstract

The utility model discloses a stern shaft infield machining tool, which belongs to the technical field of stern shaft machining and comprises a base, a supporting structure and two supporting frames, the two supporting frames and the supporting structure are all arranged on the base, the supporting structure is located between the two supporting frames, transverse columns are arranged on the supporting frames and used for placing a stern shaft, and the transverse columns are used for placing the stern shaft. A pushing piece is arranged in the transverse column, an abutting piece is arranged at the output end of the pushing piece, and the abutting piece can stretch out of the outer surface of the transverse column to abut against the inner wall of the tail shaft and can machine the outer wall of the tail shaft; when the transverse columns on the two sides are completely separated from the tail shaft, the tail shaft can fall on the supporting structure, the supporting structure fixes the tail shaft, and the inner wall of the tail shaft can be machined. The device can be used for machining the inner wall and the outer wall of the tail shaft, and the tail shaft does not need to be carried for many times to change other tools for machining.

Description

Technical Field

[0001] This utility model relates to the field of stern shaft machining technology, and in particular to a stern shaft internal machining fixture. Background Technology

[0002] The stern shaft is a critical component of a ship's propulsion system, and its machining accuracy has a vital impact on the ship's navigation performance and stability. During the machining process of the stern shaft, both its inner and outer walls require precision machining to meet design requirements. However, existing machining fixtures present several inconveniences when machining the inner and outer walls of the stern shaft. For example, machining the inner and outer walls often requires transferring the stern shaft from one fixture to another, which not only increases the complexity and labor intensity of the operation but also easily damages the stern shaft during the transfer process, affecting machining accuracy and product quality. Furthermore, the existing fixtures' methods of fixing the stern shaft are not flexible or stable enough to adapt to the machining needs of stern shafts of different specifications and sizes. Therefore, there is an urgent need for a new type of stern shaft inner-field machining fixture that can effectively solve the above problems and improve the machining efficiency and quality of the stern shaft. Utility Model Content

[0003] The main purpose of this utility model is to provide a stern shaft internal machining fixture to achieve efficient and precise machining of the inner and outer walls of the stern shaft, while improving the adaptability of the fixture to stern shafts of different specifications and the stability of the stern shaft during the machining process.

[0004] To achieve the above objectives, this utility model proposes a stern shaft internal machining fixture, including a base, a support structure, and two support frames. The two support frames and the support structure are all mounted on the base, and the support structure is located between the two support frames. A horizontal column is provided on the support frame for placing the stern shaft. A pushing member is provided inside the horizontal column, and a pushing member is provided at the output end of the pushing member. The pushing member can extend out of the outer surface of the horizontal column and abut against the inner wall of the stern shaft, thereby enabling machining of the outer wall of the stern shaft.

[0005] When the horizontal pillars on both sides are completely detached from the stern shaft, the stern shaft can fall onto the support structure, which fixes the stern shaft and allows for the processing of the inner wall of the stern shaft.

[0006] Optionally, the base is provided with a sliding groove corresponding to each support frame, and the support frame is slidably installed in the sliding groove.

[0007] Optionally, the support frame is provided with a lifting component, the output end of the lifting component is provided with a lifting platform, the lifting platform is provided with a straight column, and the horizontal column is installed on the straight column.

[0008] Optionally, the bottom of the lifting platform is provided with a plurality of limiting rods, and the support frame is provided with a mounting hole corresponding to each limiting rod, and the limiting rod is movably installed in the mounting hole.

[0009] Optionally, the base is provided with a driving member, the output end of which abuts against the support frame so that the support frame can move in the sliding groove.

[0010] Optionally, the base is further provided with a fixing groove, which is located on one side of the sliding groove and faces the same direction as the sliding groove.

[0011] Optionally, the base is provided with a mounting platform, which is located between the support frames on both sides, and the support structure is mounted on the mounting platform.

[0012] Optionally, the support structure includes two limiting members and a fixing member. A receiving groove is provided on the mounting platform, and the two limiting members are installed in the receiving groove. The fixing member passes through the side wall of the mounting platform and is connected to the limiting members.

[0013] Optionally, limiting grooves are respectively formed on the opposite side walls of the receiving groove, and bosses are provided on both sides of the limiting member, and the bosses are engaged in the limiting grooves.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The stern shaft inner processing fixture of the present invention uses the pushing and abutting parts inside the cross column to abut the inner wall of the stern shaft, which can facilitate the processing of the outer wall of the stern shaft; when the cross column is disengaged from the stern shaft and the stern shaft rests on the support structure, the inner wall of the stern shaft can be processed. There is no need to frequently move the stern shaft, which greatly improves the processing efficiency, reduces the risk of damage caused by the transfer, and ensures the processing accuracy.

[0016] 2. The support frame can slide in the sliding groove, and the height of the cross column can be adjusted by the lifting component. At the same time, the spacing of the limiting components of the support structure can be adjusted, so that the tooling can adapt to the processing of stern shafts of different specifications and sizes, and has strong versatility and adaptability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the stern shaft internal machining fixture of this utility model;

[0019] Figure 2This is a schematic diagram of the internal structure of the stern shaft internal machining fixture of this utility model;

[0020] Figure 3 This is a top view of the machining fixture for the stern shaft interior of this utility model.

[0021] Explanation of icon numbers:

[0022]

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0027] This utility model proposes a stern shaft internal machining fixture 100.

[0028] Please see Figures 1-3In one embodiment of this utility model, the stern shaft internal machining fixture 100 mainly includes a base 10, a support structure, and two support frames 20. Both support frames 20 and the support structure are mounted on the base 10, with the support structure located between the two support frames 20. Each support frame 20 has a horizontal column 24 for placing the stern shaft. A pushing member 25 is provided inside the horizontal column 24, and a pushing member 26 is provided at the output end of the pushing member 25. The pushing member 26 can extend out of the outer surface of the horizontal column 24 and abut against the inner wall of the stern shaft, thereby allowing machining of the outer wall of the stern shaft. The pushing member 26 can be made of rubber to increase friction with the stern shaft and improve stability. When the horizontal columns 24 on both sides are completely detached from the stern shaft, the stern shaft can fall onto the support structure, which fixes the stern shaft, thus allowing machining of the inner wall of the stern shaft.

[0029] Furthermore, the base 10 is provided with a sliding groove 11 corresponding to each support frame 20. The support frame 20 is slidably installed in the sliding groove 11. It is important to ensure that the support frame 20 slides smoothly in the sliding groove 11 without any jamming, so that the position of the support frame 20 can be flexibly adjusted according to actual processing requirements.

[0030] The support frame 20 is equipped with a lifting component 21, and the output end of the lifting component 21 is equipped with a lifting platform 22. A straight column 23 is provided on the lifting platform 22, and a horizontal column 24 is installed on the straight column 23. The height of the horizontal column 24 can be adjusted by the lifting component 21 to accommodate stern shafts of different diameters.

[0031] The bottom of the lifting platform 22 is provided with a number of limiting rods 28. The support frame 20 is provided with a mounting hole 27 corresponding to each limiting rod 28. The limiting rod 28 is movably installed in the mounting hole 27. There can be four limiting rods 28, which are located at the four corners of the lifting platform 22. The cooperation between the limiting rods 28 and the mounting hole 27 can enhance the stability of the lifting platform 22 during the lifting process.

[0032] The base 10 is provided with a driving member 13. The output end of the driving member 13 abuts against the support frame 20 so that the support frame 20 can move in the sliding groove 11, so as to conveniently and quickly adjust the position of the support frame 20.

[0033] It should be noted that the pushing component 25, the lifting component 21 and the driving component 13 can all be hydraulic cylinders, but are not limited to them. Their power can be selected according to the actual installation situation. Hydraulic cylinders are existing technology and will not be described in detail here.

[0034] The base 10 is also provided with a fixing groove 12, which is located on one side of the sliding groove 11 and faces the same direction as the sliding groove 11. Bolts and nuts can be used to fix and position the support frame 20 in conjunction with the fixing groove 12. When the support frame 20 is moved to a suitable position, the nuts can be tightened.

[0035] The base 10 is provided with a mounting platform 32, which is located between the support frames 20 on both sides, and the support structure is installed on the mounting platform 32.

[0036] The support structure includes two limiting members 30 and a fixing member 31. The mounting platform 32 has a receiving groove 33. The two limiting members 30 are installed in the receiving groove 33. The fixing member 31 passes through the side wall of the mounting platform 32 and is connected to the limiting members 30.

[0037] It is understood that the fixing member 31 can be a bolt, and the fixing member 31 can rotate on the mounting platform 32. The fixing member 31 and the limiting member 30 are connected by threads. When the fixing member 31 is tightened, the position of the limiting member 30 in the receiving groove 33 can be adjusted, thereby adjusting the distance between the two limiting members 30, thus achieving the fixing of stern shafts of different sizes. It should be noted that the width of the receiving groove 33 should be greater than the sum of the widths of the two limiting members 30 to ensure that the limiting member 30 can move within the receiving groove 33.

[0038] Limiting grooves 34 are respectively provided on the opposite side walls of the receiving groove 33, and protrusions 35 are provided on both sides of the limiting member 30. The protrusions 35 are engaged in the limiting grooves 34, which can ensure that the limiting member 30 will not detach from the receiving groove 33 during movement.

[0039] When using:

[0040] Machining the outer wall of the stern shaft: Place the stern shaft to be machined on the horizontal columns 24 of the two side support frames 20. Adjust the position of the support frames 20 in the sliding groove 11 using the drive component 13 to position the stern shaft in a suitable machining position. Adjust the height of the horizontal columns 24 according to the diameter of the stern shaft using the lifting component 21 to keep the stern shaft horizontal. Activate the pushing component 25 inside the horizontal column 24 to extend the abutting component 26 out of the outer surface of the horizontal column 24 and abut against the inner wall of the stern shaft to fix it in place. Use machining equipment to machine the outer wall of the stern shaft. During the machining process, the position of the support frames 20 and the height of the horizontal columns 24 can be further fine-tuned as needed to ensure machining accuracy.

[0041] Machining the inner wall of the stern shaft: After the outer wall of the stern shaft is machined, close the pusher 25, causing the abutment 26 to retract into the cross column 24. At this time, the stern shaft abuts against the cross column 24. According to the diameter of the stern shaft, first adjust the fixing member 31 so that the two limiting members 30 can adjust the fixing member, so that the two limiting members of the support structure clamp the stern shaft. Then, start the lifting member 21 to lower the stern shaft onto the support structure. Then, start the drive member 13 to move the support frame 20 away from the mounting platform 32, so that the cross columns 24 on both sides are completely detached from the stern shaft. The two limiting members 30 of the support structure clamp the stern shaft and fix it. Use the machining equipment to machine the inner wall of the stern shaft. During the machining process, pay close attention to the fixed state of the stern shaft. If necessary, the position of the limiting member 30 can be readjusted to ensure the machining quality.

[0042] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A machining fixture for the inner workings of a stern shaft, characterized in that, The device includes a base, a support structure, and two support frames. The two support frames and the support structure are all mounted on the base. The support structure is located between the two support frames. A crossbar is provided on the support frame for placing the stern shaft. A pusher is provided inside the crossbar. A pusher is provided at the output end of the pusher. The pusher can extend out of the outer surface of the crossbar and abut against the inner wall of the stern shaft, allowing the outer wall of the stern shaft to be processed. When the horizontal pillars on both sides are completely detached from the stern shaft, the stern shaft can fall onto the support structure, which fixes the stern shaft and allows for the processing of the inner wall of the stern shaft.

2. The stern shaft internal machining fixture as described in claim 1, characterized in that: The base has a sliding groove corresponding to each support frame, and the support frame is slidably installed in the sliding groove.

3. The stern shaft internal machining fixture as described in claim 2, characterized in that: The support frame is equipped with a lifting component, and the output end of the lifting component is equipped with a lifting platform. A straight column is provided on the lifting platform, and a horizontal column is installed on the straight column.

4. The stern shaft internal machining fixture as described in claim 3, characterized in that: The bottom of the lifting platform is provided with several limiting rods, and the support frame is provided with a mounting hole corresponding to each limiting rod. The limiting rod is movably installed in the mounting hole.

5. The stern shaft internal machining fixture as described in claim 2, characterized in that: The base is provided with a driving component, the output end of which abuts against the support frame so that the support frame can move in the sliding groove.

6. The stern shaft internal machining fixture as described in claim 2, characterized in that: The base is also provided with a fixing groove, which is located on one side of the sliding groove and faces the same direction as the sliding groove.

7. The stern shaft internal machining fixture as described in claim 1, characterized in that: The base is provided with a mounting platform, which is located between the support frames on both sides, and the support structure is mounted on the mounting platform.

8. The stern shaft internal machining fixture as described in claim 7, characterized in that: The support structure includes two limiting members and a fixing member. A receiving groove is provided on the mounting platform, and the two limiting members are installed in the receiving groove. The fixing member passes through the side wall of the mounting platform and is connected to the limiting members.

9. The stern shaft internal machining fixture as described in claim 8, characterized in that: Limiting grooves are respectively formed on the opposite side walls of the receiving groove, and bosses are provided on both sides of the limiting member, and the bosses are engaged in the limiting grooves.

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