A ship pressure expansion device processing tool

Abstract

The utility model provides a kind of ship pressure expansion device processing frock, belong to mechanical frock technical field, to solve the problem that only one annular face can be clamped when double-ring pressure expansion device is clamped using ordinary frock, the unclamped annular ring is easy to produce vibration deviation in polishing process, affect the precision of parts, including frock table, circular base is installed on frock table, multiple support blocks are distributed on the upper side of base along its circumferential direction, multiple inner pressure pieces are arranged in the middle of base, the inner pressure piece includes first pressure strip and second pressure strip, two limit rods are vertically arranged on base, first pressure strip and second pressure strip are slidingly arranged on corresponding limit rods, first pressure strip and second pressure strip are abutted on pressure expansion device by corresponding fastening bolt, and fastening bolt is threadedly connected with base.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical tooling technology, and more specifically, it relates to a tooling for processing ship diffuser devices. Background Technology

[0002] A marine diffuser is a duct-shaped propulsion system component installed behind the propeller. Its main function is to recover the rotational energy in the propeller wake and convert it into additional propulsion.

[0003] Currently, common diffusers consist of multiple impellers distributed circumferentially on a single annular surface. During production, they are formed using molds, and the resulting blank is clamped by tooling fixtures and then polished on a lathe. This process ensures that the dimensions of key interface parts, such as the flange end face where the diffuser mates with the stern shaft hub, are more precise and smooth. However, some double-layer diffusers consist of two annular surfaces of different sizes, with impellers distributed on both surfaces. When using ordinary tooling to clamp this special type of diffuser, only one annular surface can be clamped. The unclamped annular surface is prone to vibration and displacement during polishing, affecting the precision of the part.

[0004] Therefore, in view of this, we will study and improve the existing structure and its shortcomings, and provide a tooling for processing ship diffuser devices, in order to achieve a more practical purpose. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a machining fixture for marine diffuser devices. This fixture solves the problem that when using ordinary tooling to clamp a double-ring diffuser, only one ring surface can be clamped, and the unclamped ring is prone to vibration and displacement during grinding, affecting the precision of the parts.

[0006] The purpose and effect of this utility model's tooling for processing marine diffuser devices are achieved through the following specific technical means:

[0007] A tooling for processing marine diffusers includes a tooling table with a circular base mounted on it. Multiple support blocks are distributed around the circumference of the base. Multiple internal pressure components are disposed in the center of the base, each including a first pressure bar and a second pressure bar. Two limiting rods are erected on the base. The first and second pressure bars are slidably disposed on their respective limiting rods. The first and second pressure bars are respectively abutted against the diffuser by corresponding fastening bolts, and the fastening bolts are threadedly connected to the base.

[0008] Furthermore, multiple arc-shaped steps are formed on the inner side of the support block.

[0009] Furthermore, both the first and second pressure strips have movable grooves along their length, and the limiting rod connected to the second pressure strip passes through the movable groove on the first pressure strip, so that the first and second pressure strips overlap to form a stepped whole.

[0010] Furthermore, the position of the internal pressure component corresponds to the top of the support block.

[0011] Furthermore, the base has a circular inner groove, and the inner pressure member is connected to the inner groove of the base.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The diffuser is circumferentially supported by multiple support blocks, and the diffuser ring can be pressed and fixed from top to bottom by the inner pressure component, so that rings of different sizes are fixed on multiple support blocks. This tooling is suitable for clamping and fixing double-layer diffuser devices, and has higher stability. Attached Figure Description

[0014] Figure 1 This is a perspective view of a tooling for processing marine diffuser devices according to this utility model.

[0015] Figure 2 This is an exploded view of a tooling for processing marine diffuser devices according to this utility model.

[0016] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0017] 1. Tooling table; 2. Base; 3. Support block; 4. First pressure strip; 5. Second pressure strip; 6. Limiting rod; 7. Fastening bolt; 8. Connecting hole; 9. Movable groove; 101. Mounting hole; 201. Inner groove; 301. Step. Detailed Implementation

[0018] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0019] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Example:

[0022] As attached Figure 1 To be continued Figure 2 As shown:

[0023] This utility model provides a tooling for processing ship diffuser devices, including a tooling table 1, a circular base 2 installed on the tooling table 1, and a circular inner groove 201 opened in the middle of the circular base 2 to prevent the base 2 from contacting the turbine blades on the diffuser.

[0024] Multiple support blocks 3 are distributed around the base 2 along its circumference. The multiple support blocks 3 are arc-shaped in conjunction with the protruding platform of the base 2 to support the diffuser ring. Multiple arc-shaped steps 301 are formed on the inner side of the support blocks 3, which can support diffusers of different sizes with double-layer rings.

[0025] The base 2 has multiple internal pressure components in the middle, such as Figure 2 As shown, the inner pressure component includes a first pressure strip 4 and a second pressure strip 5. Two limiting rods 6 are erected on the base 2. The bottom of the limiting rods 6 can be welded to the base 2 or fixedly connected in other detachable ways. The first pressure strip 4 and the second pressure strip 5 are slidably set on the corresponding limiting rods 6.

[0026] The base 2 also has two connecting holes 8, which are located on the surface of the circular inner groove 201. The first pressure strip 4 and the second pressure strip 5 are respectively abutted on the diffuser by corresponding fastening bolts 7. The bottom of the fastening bolts 7 is inserted into the connecting hole 8 and threadedly connected to the base 2.

[0027] Both the first pressure strip 4 and the second pressure strip 5 have movable grooves 9 along their length. The limiting rod 6 connected to the second pressure strip 5 passes through the movable groove 9 on the first pressure strip 4, so that the first pressure strip 4 and the second pressure strip 5 overlap to form a stepped whole. The sliding of the first pressure strip 4 is restricted by the two limiting rods 6, so that it can only slide vertically, while the second pressure strip 5 can rotate around the limiting rod 6.

[0028] Before installation, use a fastening bolt 7 to clamp the first pressure bar 4 to the ring at the bottom of the diffuser. Then rotate the second pressure bar 5 to align it horizontally with the first pressure bar 4. Then use another fastening bolt 7 to thread it through the second pressure bar 5 and the first pressure bar 4 and the connecting hole 8 to tighten it so that the second pressure bar 5 abuts against the ring at the top of the diffuser, thus completing the tooling fixation.

[0029] The position of the inner pressure component corresponds to the upper part of the support block 3, so that the support block 3 and the inner pressure component clamp the diffuser ring, improving the clamping stability of the diffuser and reducing damage and deformation to the turbine blades.

[0030] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A tooling for processing marine diffuser devices, characterized in that: The tooling includes a tooling table (1), on which a circular base (2) is installed. Multiple support blocks (3) are distributed around the circumference of the base (2). Multiple internal pressure components are provided in the middle of the base (2). The internal pressure components include a first pressure bar (4) and a second pressure bar (5). Two limiting rods (6) are erected on the base (2). The first pressure bar (4) and the second pressure bar (5) are slidably disposed on the corresponding limiting rods (6). The first pressure bar (4) and the second pressure bar (5) are respectively abutted against the diffuser by corresponding fastening bolts (7), and the fastening bolts (7) are threadedly connected to the base (2).

2. The tooling for processing marine diffuser devices as described in claim 1, characterized in that: Multiple arc-shaped steps (301) are formed on the inner side of the support block (3).

3. The tooling for processing marine diffuser devices as described in claim 1, characterized in that: Both the first pressure strip (4) and the second pressure strip (5) have movable grooves (9) along their length direction. The limiting rod (6) connected to the second pressure strip (5) passes through the movable groove (9) on the first pressure strip (4), so that the first pressure strip (4) and the second pressure strip (5) overlap to form a stepped whole.

4. The tooling for processing marine diffuser devices as described in claim 1, characterized in that: The position of the internal pressure component corresponds to the upper part of the support block (3).

5. The tooling for processing marine diffuser devices as described in claim 1, characterized in that: The base (2) has a circular inner groove (201) and the inner pressure component is connected to the inner groove (201) of the base (2).

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