A large-size forging turning positioning and fixing structure

Abstract

The utility model relates to a kind of large-size forging turning positioning fixed structure, including backplate, installation block one is arranged on the backplate, positioning block is detachably connected on installation block one, the bottom of positioning block is opened into limiting slot;Including base, several positioning columns are arranged on the base, positioning sleeve is detachably connected on positioning column, the pressing plate that extends radially outward is set on the positioning sleeve, the utility model is advantageous to the forging from up and down two direction is positioned, quickly realizes the constraint positioning to forging, improves forging machining precision, and staff does not need to spend a lot of time to carry out position debugging, improves processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of forging processing tools, and in particular to a positioning and fixing structure for turning large-size forgings. Background Technology

[0002] With advancements in industrial technology, mature manufacturing systems have been established for high-precision equipment such as tunnel boring machines, gas turbines, and aero engines. These types of equipment contain a large number of irregularly shaped parts, making the manufacture of large-sized, irregularly shaped parts a key focus of current industry research.

[0003] There is currently a certain type of irregularly shaped forging, the structure of which is as follows: Figure 1 As shown, the inner hole of the forging needs to be machined. Generally, a bench vise is used to hold the bottom of the forging to fix it. However, after the worker completes the initial clamping, it is necessary to repeatedly confirm the clamping position of the forging to ensure that the forging is in the designed position. The above process takes a lot of time and affects the processing efficiency.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model discloses a positioning and fixing structure for turning large-size forgings.

[0006] A large-size forging turning positioning and fixing structure includes a back plate, on which a mounting block is provided, and a positioning block is detachably connected to the mounting block. The bottom of the positioning block has a limit groove. The structure also includes a base, on which a plurality of positioning posts are provided. Positioning sleeves are detachably connected to the positioning posts, and pressure plates extending radially outward are provided on the positioning sleeves.

[0007] Furthermore, the mounting block is provided with a protrusion that extends outward in a horizontal direction.

[0008] Furthermore, a mounting plate is provided on the protrusion, and fixing bolts are provided at both ends of the mounting plate to connect the protrusion and the mounting plate.

[0009] Furthermore, the mounting plate is provided with a positioning screw, the bottom end of which protrudes from the mounting plate and is threadedly connected to the positioning block.

[0010] Furthermore, a limiting groove is formed at the bottom of the pressure plate.

[0011] Furthermore, the number of positioning posts is set to an even number, and the positioning posts are divided into two groups, with the two groups of positioning posts arranged symmetrically about the center of the base.

[0012] Furthermore, the pressure plate is disposed on the outer wall of the positioning sleeve, and the pressure plate is parallel to the horizontal plane.

[0013] Furthermore, the upper part of the positioning post is engraved with external threads, and a locking nut is threadedly connected to the upper part of the positioning post, the locking nut abutting against the top of the positioning sleeve.

[0014] Advantages of this utility model: 1. Before turning, the forging is placed on the base, and the protrusion on the top of the forging is engaged in the limiting groove of the positioning block. The positioning pins on both sides of the bottom of the forging abut against each other, and the pressure plate presses the bottom of the forging from above, which quickly achieves constraint positioning of the top and bottom of the forging, improves the machining accuracy of the forging, and does not require the operator to spend a lot of time on position adjustment, thus improving the machining efficiency.

[0015] 2. The mounting plate provides the installation position for the positioning block. The positioning block is connected by a positioning screw, which makes it easy to replace positioning blocks of different specifications and can be adapted to forgings of different shapes.

[0016] 3. The positioning column is equipped with a positioning sleeve, and an upper pressure plate extends outward from the positioning sleeve. The upper pressure plate presses the bottom of the forging from above, improving the fixing stability of the forging. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a positioning and fixing structure for turning large-size forgings.

[0018] In the diagram: 1. Back plate; 11. Mounting block 1; 111. Protrusion; 2. Mounting plate; 21. Fixing bolt; 22. Positioning screw 1; 23. Positioning block; 231. Limiting groove; 3. Base; 31. Positioning post; 32. Positioning sleeve; 321. Pressure plate; 33. Locking nut. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] Example 1: A positioning and fixing structure for machining large-size forgings, such as Figure 1 As shown, it includes a back plate 1 and a base 3, which serve as the mounting base for other components. Before machining the forging, the back plate 1 and base 3 are installed at a fixed position on the lathe.

[0021] like Figure 1As shown, a mounting block 11 is provided on the back plate 1, and the mounting block 11 is perpendicular to the back plate 1. A protrusion 111 is provided on the mounting block 111, extending outwards horizontally to form a step. A mounting plate 2 is provided on the protrusion 111, positioned above the protrusion 111. Fixing bolts 21 are provided at both ends of the mounting plate 2, connecting the protrusion 111 and the mounting plate 2. A positioning screw 22 is provided in the middle of the mounting plate 2, with its bottom end protruding from the mounting plate 2. A positioning block 23 is threaded to the bottom end of the positioning screw 22. A limiting groove 231 is formed at the bottom of the positioning block 23, located in the middle of the positioning block 23. During forging processing, personnel pre-install the mounting plate 2 and positioning block 23 in designated positions. When the forging is fixed at the workstation, the top protrusion of the forging engages in the limiting groove 231.

[0022] like Figure 1 As shown, the base 3 is provided with a number of positioning posts 31. The number of positioning posts 31 is set to an even number. In this embodiment, the number of positioning posts 31 is set to four. The four positioning posts 31 are evenly divided into two groups, and the two groups of positioning posts 31 are symmetrically arranged about the center of the base plate. When fixing the forging, the left and right sides of the bottom of the forging abut against the two groups of positioning posts 31 respectively to prevent the forging from moving left and right.

[0023] like Figure 1 As shown, a positioning sleeve is detachably connected to the positioning post 31. A pressure plate 321 extending radially outward is provided on the positioning sleeve, which presses the bottom of the forging from above. The upper part of the positioning post 31 is engraved with external threads, and a locking nut 33 is threadedly connected to the upper part of the positioning post 31. The locking nut 33 abuts against the top of the positioning sleeve 32, and the locking nut 33 presses the positioning sleeve from above.

[0024] Specific work process: First, place the forging on the base 3. Positioning pins 31 on both sides of the bottom of the forging abut against each other. The top protrusion of the forging is engaged in the limiting groove 231. Then, the operator inserts the positioning sleeve into the positioning pin 31, so that the pressure plate 321 of the positioning sleeve contacts the bottom of the forging inward. Then, the locking nut 33 is screwed into the positioning pin 31. The locking nut 33 abuts against the top of the positioning sleeve 32, locking the positioning sleeve 32 and quickly completing the fixed positioning of the forging.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A positioning and fixing structure for turning large-size forgings, characterized in that: Includes a back plate, on which a mounting block is provided, and a positioning block is detachably connected to the mounting block, the bottom of which has a limit groove; Includes a base, on which a plurality of positioning posts are provided, and positioning sleeves are detachably connected to the positioning posts, and pressure plates extending radially outward are provided on the positioning sleeves.

2. The large-size forging turning positioning and fixing structure according to claim 1, characterized in that: The mounting block is provided with a protrusion that extends outward in a horizontal direction.

3. The large-size forging turning positioning and fixing structure according to claim 2, characterized in that: A mounting plate is provided on the protrusion, and fixing bolts are provided at both ends of the mounting plate to connect the protrusion and the mounting plate.

4. The large-size forging turning positioning and fixing structure according to claim 3, characterized in that: The mounting plate is provided with a positioning screw, the bottom end of which protrudes from the mounting plate and is threadedly connected to the positioning block.

5. The large-size forging turning positioning and fixing structure according to claim 1, characterized in that: The bottom of the pressure plate has a limiting groove.

6. The large-size forging turning positioning and fixing structure according to claim 1, characterized in that: The number of positioning posts is set to an even number, and the positioning posts are divided into two groups, with the two groups of positioning posts arranged symmetrically about the center of the base.

7. The large-size forging turning positioning and fixing structure according to claim 6, characterized in that: The pressure plate is disposed on the outer wall of the positioning sleeve, and the pressure plate is parallel to the horizontal plane.

8. The large-size forging turning positioning and fixing structure according to claim 7, characterized in that: The upper part of the positioning post is engraved with external threads, and a locking nut is threadedly connected to the upper part of the positioning post. The locking nut abuts against the top of the positioning sleeve.

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