A machining jig for a ring-shaped forging

Abstract

The utility model relates to a kind of machining clamps for annular forging, including bottom plate and positioning cylinder, the positioning cylinder is detachably connected on bottom plate;Positioning boss is provided on the bottom plate, the positioning boss is located inside positioning cylinder and both coaxial arrangement, positioning rod is provided on the bottom plate, the positioning rod is perpendicular to bottom plate, the positioning rod passes through the center of positioning boss, the top of the positioning rod is detachably connected with pressing plate, the pressing plate is located above positioning cylinder, the utility model's advantage lies in improving fixed stability, avoid annular forging to occur in the processing process and shift.

Description

Technical Field

[0001] This utility model relates to the field of forging processing equipment components, and in particular to a processing fixture for ring forgings. Background Technology

[0002] With the development of industrial technology, mechanical equipment is becoming increasingly complex, such as the ring forgings of various shapes that can be seen in gas turbines and aero engines.

[0003] Currently, in the manufacturing process of ring forgings, after heat treatment, the forgings need to undergo surface machining. Machining manufacturers typically use multiple vises to clamp the edges of the ring forgings to secure them. However, for certain ring forgings with narrow edges, the vises lack sufficient clamping depth, resulting in low stability and a tendency for movement and positional deviation during machining.

[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 machining fixture for ring forgings.

[0006] A machining fixture for ring forgings includes a base plate and a positioning cylinder, the positioning cylinder being detachably connected to the base plate; a positioning boss is provided on the base plate, the positioning boss being located inside the positioning cylinder and the two being arranged coaxially; a positioning rod is provided on the base plate, the positioning rod being perpendicular to the base plate, the positioning rod passing through the center of the positioning boss, and a pressure plate being detachably connected to the top of the positioning rod, the pressure plate being located above the positioning cylinder.

[0007] Furthermore, a through hole is formed at the center of the positioning boss, the positioning rod passes through the through hole of the positioning boss, and the positioning rod and the positioning boss are arranged coaxially.

[0008] Furthermore, the bottom of the positioning cylinder is provided with an outwardly extending outer edge plate.

[0009] Furthermore, a groove is provided on the top of the outer edge plate, and a bolt is threaded into the groove. The outer edge plate is fixed to the base plate by the bolt.

[0010] Furthermore, the top of the positioning cylinder is provided with an outwardly extending outer edge plate.

[0011] Furthermore, the outer edge plate 2 has several spaced positioning notches.

[0012] Furthermore, a nut is threaded onto the top of the positioning rod, and the nut presses the pressure plate from above.

[0013] Furthermore, an anti-slip pad is provided between the nut and the pressure plate.

[0014] Furthermore, a washer is provided between the anti-slip pad and the nut.

[0015] Advantages of this utility model: 1. When machining the surface of the ring forging, the main body of the ring forging is inserted into the positioning cylinder, the positioning boss is inserted into the inner hole of the ring forging, and the pressure plate presses the ring forging from above, thereby restricting the displacement of the ring forging, improving the fixing stability, and preventing the ring forging from moving or shifting during the machining process.

[0016] 2. By increasing the contact area between the positioning cylinder and the bottom plate through the outer edge plate, the pressure per unit area is reduced, and local deformation due to stress concentration is avoided.

[0017] 3. The nut presses the pressure plate with an anti-slip pad. The anti-slip pad has a high surface roughness and has higher frictional resistance compared with the nut directly contacting the pressure plate, thus preventing the pressure plate from rotating at will. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a machining fixture for ring forgings.

[0019] In the diagram: 1. Base plate; 11. Positioning boss; 12. Positioning rod; 13. Pressure plate; 14. Nut; 141. Washer; 15. Anti-slip pad; 2. Positioning cylinder; 21. Outer edge plate one; 211. Groove; 212. Bolt; 22. Outer edge plate two; 221. Positioning notch. Detailed Implementation

[0020] 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.

[0021] Example 1: A machining fixture for ring forgings, such as Figure 1 As shown, the assembly includes a base plate 1 and a positioning cylinder 2, with the positioning cylinder 2 detachably connected to the base plate 1. The base plate 1 serves two purposes: firstly, it supports the annular forging, and secondly, it acts as a mounting base for other parts. The main body of the annular forging can be inserted into the positioning cylinder 2 to fix its machining position.

[0022] like Figure 1As shown, a positioning boss 11 is provided on the base plate 1. The positioning boss 11 has a through hole in its center. The positioning boss 11 is located inside the positioning cylinder 2, and the two are arranged coaxially. When fixing the annular forging, the positioning boss 11 can be inserted into the inner hole of the annular forging to prevent radial movement of the annular forging during surface processing.

[0023] like Figure 1 As shown, a positioning rod 12 is provided on the base plate 1. The positioning rod 12 is perpendicular to the base plate 1 and passes through the through hole in the center of the positioning boss 11. The bottom end of the positioning rod 12 is threadedly connected to the base plate 1. A pressure plate 13 is detachably connected to the top of the positioning rod 12 and is located above the positioning cylinder 2. The pressure plate 13 presses the surface of the annular forging from above. A nut 14 is threadedly connected to the top of the positioning rod 12 and is located above the pressure plate 13. An anti-slip pad 15 is provided between the nut 14 and the pressure plate 13. The anti-slip pad 15 has high frictional resistance with the pressure plate 13, reducing the pressure plate 13 from rotating freely. A washer 141 is provided between the anti-slip pad 15 and the nut 14 to prevent the nut 14 from scratching the anti-slip pad 15.

[0024] like Figure 1 As shown, the bottom of the positioning cylinder 2 is provided with an outwardly extending outer edge plate 21. There are two outer edge plates 21, which are symmetrically arranged around the central axis of the positioning cylinder 2. The top of the outer edge plate 21 is provided with a groove 211. The inner edge of the groove 211 is rounded to avoid stress concentration caused by sharp points. A bolt 212 is threaded into the groove 211, and the outer edge plate 21 is fixed to the base plate 1 by the bolt 212.

[0025] like Figure 1 As shown, the top of the positioning cylinder 2 is provided with an outwardly extending outer edge plate 22. The outer edge plate 22 has several spaced positioning notches 221. The number and shape of the positioning notches 221 are determined by the protrusions on the annular forging disk that needs to be fixed. When fixing the annular forging, the outer edge plate 22 supports the annular forging disk from below, and the protrusions on the annular forging disk are embedded into the positioning notches 221, thus constraining each other.

[0026] Specific work process: First, the positioning cylinder 2 is fixed to the base plate 1 by bolts 212. The tail end of the positioning rod 12 is screwed into the base plate 1. Then, the main body of the annular forging is placed into the positioning cylinder 2, the positioning boss 11 is inserted into the inner hole of the annular forging, the positioning rod 12 passes through the inner hole of the annular forging, and the disc of the annular forging abuts against the outer edge plate 22. Then, the anti-slip pad 15 and the washer 141 are sequentially fitted onto the positioning rod 12. Then, the nut 14 is screwed into the top of the positioning rod 12 to tighten the washer 141, thereby causing the pressure plate 13 to press the top surface of the annular forging. After the fixing work is completed, the surface of the annular forging can be processed.

[0027] 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 machining fixture for ring forgings, characterized in that, It includes a base plate and a positioning cylinder, wherein the positioning cylinder is detachably connected to the base plate; The base plate is provided with a positioning boss, which is located inside the positioning cylinder and the two are arranged coaxially. The base plate is provided with a positioning rod, which is perpendicular to the base plate and passes through the center of the positioning boss. A pressure plate is detachably connected to the top of the positioning rod, and the pressure plate is located above the positioning cylinder.

2. The machining fixture for ring forgings according to claim 1, characterized in that: The positioning boss has a through hole at its center, the positioning rod passes through the through hole of the positioning boss, and the positioning rod and the positioning boss are arranged coaxially.

3. The machining fixture for ring forgings according to claim 1, characterized in that: The bottom of the positioning cylinder is provided with an outwardly extending outer edge plate.

4. A machining fixture for ring forgings according to claim 3, characterized in that: The top of the outer edge plate is provided with a groove, and a bolt is threaded into the groove. The outer edge plate is fixed to the base plate by the bolt.

5. A machining fixture for ring forgings according to claim 1, characterized in that: The top of the positioning cylinder is provided with an outwardly extending outer edge plate.

6. A machining fixture for ring forgings according to claim 5, characterized in that: The outer edge plate has several spaced positioning notches.

7. A machining fixture for ring forgings according to claim 1, characterized in that: The top of the positioning rod is threaded with a nut, which presses the pressure plate from above.

8. A machining fixture for ring forgings according to claim 7, characterized in that: An anti-slip pad is provided between the nut and the pressure plate.

9. A machining fixture for ring forgings according to claim 8, characterized in that: A washer is provided between the anti-slip pad and the nut.

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