A combined ring rolling machine die

Abstract

The utility model relates to a combined ring rolling mill mould, the combined ring rolling mill mould includes main roller axle, the main roller axle outside fixed cover sets up with the cover and main roller mould, the cover has two, is located the upper end and lower extreme of main roller mould respectively, through the ring plate cover setting in the cover outside, the cover restricts the axial movement of ring plate, again passes through the ring plate respectively two pin rods, the part of pin rod is exposed in the cover inside and is connected with the cover outside, the cover restricts the up and down movement of pin rod, and the pin rod also restricts the up and down movement of ring plate, fixes together with the cover and ring plate, thereby increases the outer diameter of cover, guarantees the stability of material height and material moving direction in the ring rolling process of different thickness ring class forgings, guarantees that the shape of forging conforms to the design requirement.

Description

Technical Field

[0001] This utility model relates to the field of ring rolling mill technology, and in particular to a combined ring rolling mill mold. Background Technology

[0002] With the development of industries such as aerospace and gas turbines, the requirements for forgings are becoming increasingly stringent, and their structures are becoming more complex. To improve material utilization and reduce machining allowances, ring forgings, especially casing-type forgings, are typically produced using near-net-shape forming methods. Near-net-shape ring forgings require two cover plates on the main roller during the ring rolling process to ensure the stability of the material height and movement direction, thus guaranteeing that the forging shape meets design requirements.

[0003] However, in the ring rolling mill, the cover plate sleeved on the main roller shaft and located at the upper and lower ends of the main roller die is usually of a fixed size. When producing specific forgings, the existing general-purpose cover plate may not be applicable, and its universality is poor.

[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 combined ring rolling mill mold to solve the problem of poor universality when producing forgings of different sizes and shapes due to the fixed size of the cover plate in the ring rolling mill.

[0006] The technical solution adopted in this utility model is as follows: A combined ring rolling mill mold includes a main roller shaft, a cover plate and a main roller mold fixedly sleeved on the outside of the main roller shaft; there are two cover plates, located at the upper and lower ends of the main roller mold respectively; a ring plate is sleeved on the outside of the cover plate, and two pins pass through the ring plate respectively, with the portion of the pins protruding from the inside of the ring plate engaging with the outside of the cover plate, thereby fixing the cover plate and the ring plate together.

[0007] A further technical solution is that an annular groove is formed on the outer side of the cover plate, and two pin holes are formed on the outer side of the annular plate. The inner diameter of the pin holes and the inner diameter of the annular groove are the same as the outer diameter of the pin rod. The pin holes and the pin rod are coaxially arranged. The middle part of the pin holes is exposed inside the annular plate, and the inner side of the pin rod is tangent to the inner side of the annular groove.

[0008] A further technical solution is that extension rods are provided at both ends of the pin, the extension rods are coaxially arranged with the pin, and the outer diameter of the extension rods is smaller than the outer diameter of the pin.

[0009] A further technical solution is that the two pin holes are symmetrically arranged with respect to the diameter of the main roller shaft parallel to them, and the two pin rods are symmetrically arranged with respect to the diameter of the main roller shaft parallel to them.

[0010] A further technical solution is that the cover plate is frustum-shaped, and the outer diameter of the upper end of the cover plate is smaller than the outer diameter of the lower end of the cover plate.

[0011] A further technical solution is that the angle between the generatrix of the cover plate and the lower end face of the cover plate is 85~88°.

[0012] A further technical solution is that the pin hole extends through the ring plate at both ends.

[0013] A further technical solution is that the combined ring rolling mill mold also includes a mandrel, which is arranged parallel to the main roller shaft and located on the side of the main roller shaft.

[0014] The beneficial effects of this utility model embodiment are as follows: (I) The combined ring rolling mill mold of this utility model, by fitting a ring plate on the outside of a cover plate, restricting the axial movement of the ring plate, and then passing two pins through the ring plate respectively, with the part of the pin protruding from the inside of the ring plate engaging the outside of the cover plate, the cover plate restricts the up and down movement of the pins, and at the same time the pins also restrict the up and down movement of the ring plate, fixing the cover plate and the ring plate together, thereby increasing the outer diameter of the cover plate, so as to ensure the stability of the material height and material movement direction during the ring rolling process of ring forgings of different thicknesses, and ensure that the shape of the forging meets the design requirements.

[0015] (ii) Furthermore, the cover plate is frustum-shaped, with the outer diameter of the upper end of the cover plate being smaller than the outer diameter of the lower end of the cover plate, and the inner shape of the ring plate matching the outer shape of the cover plate. After the ring plate is placed on the cover plate, since the outer diameter of the upper end of the cover plate is smaller than the outer diameter of the lower end of the cover plate, the ring plate can prevent it from sliding further downward relative to the cover plate after it is in place, which facilitates the alignment and assembly of the pin hole of the ring plate with the annular groove of the cover plate. Attached Figure Description

[0016] Figure 1 This is an isometric view of the combined ring rolling mill mold of this utility model.

[0017] Figure 2 This is an isometric view of the cover plate, ring plate, and pin rod in the combined ring rolling mill mold of this utility model.

[0018] Figure 3 This is a cross-sectional view of the combined ring rolling mill mold of this utility model.

[0019] Figure 4 This is a longitudinal sectional view of the combined ring rolling mill mold of this utility model.

[0020] In the picture: 1. Main roller shaft; 2. Cover plate; 21. Annular groove; 3. Annular plate; 31. Pin hole; 4. Main roller mold; 5. Pin rod; 51. Extension rod; 6. Mandrel. Detailed Implementation

[0021] 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.

[0022] Example: This embodiment discloses a combined ring rolling mill mold.

[0023] like Figure 1 As shown, the combined ring rolling mill mold includes a main roller shaft 1, with a cover plate 2 and a main roller mold 4 fixedly sleeved on the outside of the main roller shaft 1. There are two cover plates 2, located at the upper and lower ends of the main roller mold 4, respectively. A ring plate 3 is sleeved on the outside of the cover plate 2, and two pins 5 pass through the ring plate 3 respectively. The part of the pins 5 protruding from the inside of the ring plate 3 engages with the outside of the cover plate 2, fixing the cover plate 2 and the ring plate 3 together.

[0024] like Figure 2 and Figure 3 As shown, exemplarily, the inner side is the side closer to the axis of the main roller shaft 1, and the outer side is the side farther from the axis of the main roller shaft 1. Both the cover plate 2 and the ring plate 3 are cylindrical rings concentric with the main roller shaft 1. An annular groove 21 is formed on the outer side of the cover plate 2, and two pin holes 31 are formed on the outer side of the ring plate 3. The inner diameter of the pin holes 31 and the inner diameter of the annular groove 21 are the same as the outer diameter of the pin rod 5. The pin holes 31 are coaxially arranged with the pin rod 5, and the middle part of the pin holes 31 protrudes from the inner side of the ring plate 3, so that when the pin rod 5 passes through the pin holes 31, the middle part protrudes from the ring plate 3 and is inserted into the annular groove 21. The inner side of the pin rod 5 is tangent to the inner side of the annular groove 21.

[0025] like Figure 2 and Figure 3 As shown, further, extension rods 51 are provided at both ends of the pin 5 along the axial direction. The extension rods 51 are coaxially arranged with the pin 5, and the outer diameter of the extension rods 51 is smaller than the outer diameter of the pin 5, which facilitates the insertion of the pin 5 into the pin hole 31 and the annular groove 21, and facilitates the removal of the pin 5.

[0026] like Figure 3 As shown, the two pin holes 31 are symmetrically arranged with respect to the diameter of the main roller shaft 1 parallel to them, and the two pins 5 are symmetrically arranged with respect to the diameter of the main roller shaft 1 parallel to them, which facilitates the design and production of the mold.

[0027] like Figure 4As shown, further, the cover plate 2 is frustum-shaped, with the outer diameter of the upper end of the cover plate 2 being smaller than the outer diameter of the lower end of the cover plate 2, and the inner shape of the ring plate 3 fitting with the outer side of the cover plate 2. For example, the angle α between the generatrix of the cover plate 2 and the lower end face of the cover plate 2 is 85~88°. After the ring plate 3 is placed on the cover plate 2, because the outer diameter of the upper end of the cover plate 2 is smaller than the outer diameter of the lower end of the cover plate 2, the ring plate 3, once in place, can prevent it from sliding further downward relative to the cover plate 2, facilitating the alignment and assembly of the pin hole 31 of the ring plate 3 with the annular groove 21 of the cover plate 2.

[0028] like Figure 3 As shown, the pin hole 31 extends through the ring plate 3 at both ends, allowing the pin 5 to be inserted and removed from either end, making it convenient for operators to use.

[0029] like Figure 1 and Figure 4 As shown, the combined ring rolling mill mold further includes a mandrel 6, which is arranged parallel to the main roller shaft 1 and located on the side of the main roller shaft 1. Both the mandrel 6 and the main roller shaft 1 are mounted on the ring rolling mill and are driven by the ring rolling mill to rotate together. At the same time, the ring rolling mill drives the main roller shaft 1 to feed towards the mandrel 6 to achieve irregular ring rolling.

[0030] like Figure 1 and Figure 4 As shown, the main roller mold 4 further includes a cylindrical ring and a convex ring integrally formed on the outer middle of the cylindrical ring. The cross-section of the convex ring is two isosceles trapezoids symmetrically arranged with respect to the axis of the main roller shaft 1, and the upper base of the isosceles trapezoid is located outside the lower base.

[0031] In this embodiment, by fitting the ring plate 3 onto the outside of the cover plate 2, the cover plate 2 restricts the axial movement of the ring plate 3. Then, two pins 5 are passed through the ring plate 3 respectively. The part of the pins 5 protruding from the inside of the ring plate 3 is engaged with the outside of the cover plate 2. The cover plate 2 restricts the up and down movement of the pins 5. At the same time, the pins 5 also restrict the up and down movement of the ring plate 3, thus fixing the cover plate 2 and the ring plate 3 together. This increases the outer diameter of the cover plate 2, thereby ensuring the stability of the material height and material movement direction during the ring rolling process of ring forgings of different thicknesses, and ensuring that the shape of the forging meets the design requirements.

[0032] 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 combined ring rolling mill mold, characterized in that, The combined ring rolling mill mold includes a main roller shaft, and a cover plate and a main roller mold are fixedly sleeved on the outside of the main roller shaft; there are two cover plates, located at the upper end and the lower end of the main roller mold respectively; a ring plate is sleeved on the outside of the cover plate, and two pins pass through the ring plate respectively. The part of the pins protruding from the inside of the ring plate engages with the outside of the cover plate, fixing the cover plate and the ring plate together.

2. The combined ring rolling mill mold according to claim 1, characterized in that: An annular groove is formed on the outer side of the cover plate, and two pin holes are formed on the outer side of the annular plate. The inner diameter of the pin holes and the inner diameter of the annular groove are the same as the outer diameter of the pin rod. The pin holes and the pin rod are coaxially arranged. The middle part of the pin holes is exposed inside the annular plate, and the inner side of the pin rod is tangent to the inner side of the annular groove.

3. The combined ring rolling mill mold according to claim 1, characterized in that: Extension rods are provided at both ends of the pin, the extension rods are coaxially arranged with the pin, and the outer diameter of the extension rods is smaller than the outer diameter of the pin.

4. The combined ring rolling mill mold according to claim 1, characterized in that: The two pin holes are symmetrically arranged with respect to the diameter of the main roller shaft parallel to them, and the two pins are symmetrically arranged with respect to the diameter of the main roller shaft parallel to them.

5. The combined ring rolling mill mold according to claim 1, characterized in that: The cover plate is frustum shaped, and the outer diameter of the upper end of the cover plate is smaller than the outer diameter of the lower end of the cover plate.

6. The combined ring rolling mill mold according to claim 5, characterized in that: The angle between the generatrix of the cover plate and the lower end face of the cover plate is 85°~88°.

7. The combined ring rolling mill mold according to claim 2, characterized in that: The pin hole extends through the ring plate at both ends.

8. The combined ring rolling mill mold according to claim 1, characterized in that: The combined ring rolling mill mold also includes a mandrel, which is arranged parallel to the main roller shaft and located on the side of the main roller shaft.

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