Extrusion die for fan shaft forgings of Yangtze River series engines

Abstract

The utility model discloses a Yangtze River series engine fan shaft forge piece extrusion die which comprises an upper die and a lower die and is characterized in that the upper die is composed of an upper filter plate, an upper filter plate gasket, an upper die base, an upper die cushion block, an upper die base gasket, an extrusion rod and an extrusion block; the lower die is composed of a lower filter plate, a lower filter plate gasket, an ejector rod, a lower die base, a lower die cushion block, a lower die side core die, a lower die bottom core die, a lower die 1 # module, a lower die 2 # module and a lower die 3 # module. The die is used for extrusion forming of fan shaft forgings of Yangtze River series engines, the forming problem is effectively solved, and the size precision and the material utilization rate of the fan shaft forgings are greatly improved. The die is mainly used for extrusion forming of fan shaft forgings of Yangtze River series engines.

Description

Technical Field

[0001] The invention relates to an extrusion die, in particular to an extrusion die for a Changjiang series engine fan shaft forging. Background Art

[0002] The Yangtze series engine is a civil turbofan engine with a large bypass ratio, specially designed for the C919 domestic large aircraft. The fan shaft of the Yangtze series engine is an important part of the rotor system of the aircraft engine, and plays a very important role in transmitting power, torque and supporting other parts. Compared with the fan shafts of other engines, the fan shaft of the Yangtze series engine is larger in size and more complex in shape, and it is difficult to form it using conventional forging methods. At present, free forging is generally used for production in China. This method does not have good control over the dimensional accuracy of the fan shaft forgings, and usually requires increasing the forging allowance. After free forging, it is machined and a large amount of excess material is turned off, which seriously causes material waste. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide an extrusion die for a Changjiang series engine fan shaft forging, which performs extrusion forming on the Changjiang series engine fan shaft forging, effectively solves the forming problem, and greatly improves the dimensional accuracy and material utilization rate of the fan shaft forging.

[0004] In order to solve the above technical problems, the Changjiang series engine fan shaft forging extrusion die of the present invention comprises an upper die and a lower die, and is characterized in that the upper die is composed of an upper filter plate, an upper filter plate gasket, an upper die base, an upper die pad, an upper die base gasket, an extrusion rod, and an extrusion block; the lower die is composed of a lower filter plate, a lower filter plate gasket, an ejector rod, a lower die base, a lower die pad, a lower die side core die, a lower die bottom core die, a lower die 1# module, a lower die 2# module, and a lower die 3# module.

[0005] Particularly, the upper filter plate is separated from the upper mold base by an upper filter plate gasket and connected by bolts.

[0006] Particularly, the upper die base is separated from the extrusion rod by an upper die base gasket, an upper die cushion block is arranged at the center of the upper die base gasket, and the upper die base is connected to the extrusion rod by bolts.

[0007] In particular, the lower mold base and the lower mold 1# module, the lower mold 1# module and the lower mold 2# module, and the lower mold 2# module and the lower mold 3# module are all connected by means of a card slot.

[0008] Particularly, the lower filter plate is separated from the lower mold base by a lower filter plate gasket and connected by bolts.

[0009] Particularly, a lower mold pad is provided at the center of the lower mold base, a through hole is provided at the center of the lower mold pad, and the ejector rod can pass through the through hole of the lower mold pad to move up and down.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The extrusion die for the Changjiang series engine fan shaft forgings of the present invention uses an upper die and a lower die to extrude the Changjiang series engine fan shaft forgings, which effectively solves the forming problem and greatly improves the dimensional accuracy and material utilization rate of the fan shaft forgings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0013] Figure 1 It is a schematic diagram of the upper mold structure.

[0014] Figure 2 It is a schematic diagram of the lower mold structure. DETAILED DESCRIPTION

[0015] The Changjiang series engine fan shaft forging extrusion die comprises an upper die and a lower die, wherein the upper die is composed of an upper filter plate 11, an upper filter plate gasket 12, an upper die base 14, an upper die cushion block 15, an upper die base gasket 16, an extrusion rod 17, and an extrusion block 18. Figure 1 As shown; the lower mold is composed of a lower filter plate 21, a lower filter plate gasket 22, an ejector rod 23, a lower mold base 25, a lower mold cushion block 26, a lower mold side core mold 28, a lower mold bottom core mold 27, a lower mold 1# module 29, a lower mold 2# module 30, and a lower mold 3# module 32, as shown Figure 2 As shown. The upper filter plate 11 is separated from the upper mold base 14 by an upper filter plate gasket 12 and connected by bolts 13. The upper mold base 14 is separated from the extrusion rod 17 by an upper mold base gasket 16. There is an upper mold pad 15 in the center of the upper mold base gasket 16. The upper mold base 14 is connected to the extrusion rod 17 by bolts 13. The lower mold base 25 and the lower mold 1# module 29, the lower mold 1# module 29 and the lower mold 2# module 30, and the lower mold 2# module 30 and the lower mold 3# module 32 are all connected by a slot 31. The lower filter plate 21 is separated from the lower mold base 25 by a lower filter plate gasket 22 and connected by bolts 24. There is a lower mold pad 26 in the center of the lower mold base 25, and there is a through hole in the center of the lower mold pad 26. The ejector rod 23 can pass through the through hole of the lower mold pad 26 to move up and down.

Claims

1. A Changjiang series engine fan shaft forging extrusion die, comprising an upper die and a lower die, characterized in that: The upper mold is composed of an upper filter plate, an upper filter plate gasket, an upper mold base, an upper mold pad, an upper mold base gasket, an extrusion rod, and an extrusion block; the lower mold is composed of a lower filter plate, a lower filter plate gasket, an ejector rod, a lower mold base, a lower mold pad, a lower mold side core mold, a lower mold bottom core mold, a lower mold 1# module, a lower mold 2# module, and a lower mold 3# module.

2. The extrusion die for the fan shaft forging of the Changjiang series engine according to claim 1 is characterized by: The upper filter plate and the upper mold base are separated by an upper filter plate gasket and connected by bolts.

3. The extrusion die for the fan shaft forging of the Changjiang series engine according to claim 1 is characterized by: The upper mold base is separated from the extrusion rod by an upper mold base gasket, an upper mold cushion block is arranged at the center of the upper mold base gasket, and the upper mold base is connected to the extrusion rod by bolts.

4. The extrusion die for the fan shaft forging of the Changjiang series engine according to claim 1 is characterized by: The lower mold base and the lower mold 1# module, the lower mold 1# module and the lower mold 2# module, and the lower mold 2# module and the lower mold 3# module are all connected by means of card slots.

5. The extrusion die for the fan shaft forging of the Changjiang series engine according to claim 1 is characterized by: The lower filter plate and the lower mold base are separated by a lower filter plate gasket and connected by bolts.

6. The extrusion die for the fan shaft forging of the Changjiang series engine according to claim 1, characterized in that: A lower mold pad is provided at the center of the lower mold base, and a through hole is provided at the center of the lower mold pad. The ejector rod can pass through the through hole of the lower mold pad to move up and down.

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