A thin-walled special-shaped ring part profiling tool

Abstract

The utility model discloses a kind of thin-wall special-shaped ring piece copy processing frock, including frock base, the limiting piece being located on the upper surface of frock base and being arranged around several, limiting piece includes limiting bolt and limiting plate, limiting bolt is connected with frock base inside thread after being threaded through the threaded hole on limiting plate, and a circle of recess is equipped in frock base bottom outer end face.The utility model is processed by designing two sequence precision milling copy frock, and the "S" type surface of part is processed in stages, after rough machining part is obtained after part passes through rough turning, rough turning outer surface, rough turning inner surface process, first, outer surface is turned using positive clamping method, then the recess of reverse part is clamped to the base with the shape of part, and inner surface is processed using reverse clamping method, reach the purpose of processing S surface and preventing part deformation.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature alloy processing technology, specifically to a tooling for contour machining of thin-walled irregular ring parts. Background Technology

[0002] High-temperature alloys face significant cutting forces during machining, approximately 30% higher than those for commonly used steels, making machining more challenging. This difficulty is exacerbated when machining complex shapes. For instance, a ring-shaped part with an S-shaped cross-section, thin walls, and a large diameter is prone to uneven stress during machining, leading to deformation.

[0003] Currently, traditional tooling for machining such parts typically requires changing to a different type of tooling base, making it difficult to complete machining of all surfaces in a single clamping state. Therefore, changing tooling wastes time, increases the workload of operators, and extends manufacturing time. Furthermore, there is currently no suitable tooling in the machining tooling field capable of simultaneously clamping such parts from multiple angles. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a tooling for contour machining of thin-walled irregularly shaped ring parts.

[0005] The technical solution of this utility model is:

[0006] A tooling for contouring thin-walled irregular ring parts includes a tooling base and a plurality of limiting members arranged around the upper surface of the tooling base.

[0007] The limiting component includes a limiting bolt and a limiting plate. The limiting bolt passes through a threaded hole on the limiting plate and is then connected to the internal thread of the tooling base.

[0008] The tooling base has a groove around its bottom outer end face.

[0009] Furthermore, the limiting member is disposed on a positioning plate provided on the upper surface of the tooling base.

[0010] Note: Each limiting component is fixed by a positioning plate.

[0011] Furthermore, there are a total of 10 to 15 limiting members.

[0012] Note: By optimizing the number of limiting components, a better limiting effect and uniform clamping force can be ensured.

[0013] Furthermore, the limiting plate is divided into two parts: a front plate and a rear plate. The threaded hole is located on the rear plate, and the rear end of the front plate is provided with a threaded rod, which is threadedly connected to the threaded groove provided in the middle of the front end of the rear plate.

[0014] Note: The position of the front plate can be adjusted by rotating the threaded rod, thereby enabling the clamping of parts of different sizes.

[0015] Furthermore, the depth of the groove is 1 / 4 to 1 / 3 of the height of the tooling base, and the width of the groove is 1 / 10 to 1 / 8 of the radius of the tooling base.

[0016] Note: The depth and width of the groove are based on the shape of the part to be processed, but should be controlled within a reasonable range.

[0017] Furthermore, a ring of positioning holes is provided at the outer edge of the tooling base, and the number of positioning holes is 10 to 20.

[0018] Note: The positioning holes are used to keep the tooling base fixed and stable.

[0019] The beneficial effects of this utility model are:

[0020] (1) The thin-walled irregular ring part contouring machining fixture of this utility model is designed with two-stage precision milling contouring fixture to process the “S” surface of the part in stages. After the part is rough turned, rough turned outer surface and rough turned inner surface to obtain the rough machined part, the outer surface is first precision turned by the forward clamping method. Then the part is clamped to the groove of the part on the back of the base and the inner surface is processed by the reverse clamping method, so as to achieve the purpose of processing the S-shaped surface and preventing the part from deforming.

[0021] (2) The thin-walled irregular ring part contouring tooling of this utility model optimizes the structure of the limiting part, so that when the outer surface is precision machined by the forward clamping method, the appropriate clamping position can be selected according to the different internal lengths of the part. The length adjustable limiting plate can fix the part on the upper surface of the tooling base or the positioning plate. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a thin-walled irregular ring forming tooling according to the present invention;

[0023] Figure 2 This is a schematic diagram of the bottom structure of a thin-walled irregular ring forming tool according to the present invention;

[0024] Figure 3 This is a top view of a thin-walled irregular ring forming tooling according to the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the limiting component of a contouring tooling for thin-walled irregular ring parts according to this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the limiting plate after length adjustment of a thin-walled irregular ring forming tooling according to the present invention;

[0027] Figure 6 This is a cross-sectional view of a thin-walled irregular ring forming tooling according to the present invention;

[0028] Figure 7 This is a drawing of the part to be processed in the experimental example of this utility model;

[0029] Figure 8 This is a cross-sectional view of the part to be processed after rough turning in the experimental example of this utility model;

[0030] Figure 9 This is a cross-sectional view of the part to be machined after rough machining of the outer and inner surfaces in the experimental example of this utility model;

[0031] Figure 10 This is a cross-sectional view of the part to be processed after the outer surface has been precision machined in the experimental example of this utility model;

[0032] Figure 11 This is a cross-sectional view of the part after the inner surface has been precision machined in the experimental example of this utility model.

[0033] Among them, 1-tooling base, 11-groove, 12-positioning plate, 13-positioning hole, 2-limiting component, 21-limiting bolt, 22-limiting plate, 221-front end plate, 222-rear end plate, 223-threaded rod, 224-threaded groove, 23-threaded hole. Detailed Implementation

[0034] Example 1

[0035] like Figure 1 As shown, a thin-walled irregular ring part contouring machining fixture includes a fixture base 1, 12 limiting members 2 arranged around the upper surface of the fixture base 1, and the limiting members 2 are arranged on the positioning plate 12 provided on the upper surface of the fixture base 1.

[0036] like Figures 3-5 As shown, the limiting component 2 includes a limiting bolt 21 and a limiting plate 22. The limiting bolt 21 passes through the threaded hole 23 on the limiting plate 22 and is threadedly connected to the inside of the tooling base 1. The limiting plate 22 is divided into two parts: a front plate 221 and a rear plate 222. The threaded hole 23 is located on the rear plate 222. The rear end of the front plate 221 is provided with a threaded rod 223, which is threadedly connected to the threaded groove 224 provided in the middle of the front end of the rear plate 222.

[0037] like Figure 2 and Figure 6 As shown, a groove 11 is provided on the outer end face of the bottom of the tooling base 1. The depth of the groove 11 is 1 / 4 of the height of the tooling base 1, and the width of the groove 11 is 1 / 10 of the radius of the tooling base 1.

[0038] like Figure 1As shown, the tooling base 1 has a ring of positioning holes 13 on its outer edge, and there are 15 positioning holes 13.

[0039] Example 2

[0040] The difference between this embodiment and Embodiment 1 is that:

[0041] Ten limiting pieces 2 are arranged around the upper surface of the tooling base 1.

[0042] Example 3

[0043] The difference between this embodiment and Embodiment 1 is that:

[0044] Fifteen limiting pieces 2 are arranged around the upper surface of the tooling base 1.

[0045] Example 4

[0046] The difference between this embodiment and Embodiment 1 is that:

[0047] The depth of the groove 11 is 1 / 3 of the height of the tooling base 1, and the width of the groove 11 is 1 / 8 of the radius of the tooling base 1.

[0048] Example 5

[0049] The difference between this embodiment and Embodiment 1 is that:

[0050] The tooling base 1 has a ring of positioning holes 13 around its outer edge, with 10 positioning holes 13 in total.

[0051] Example 6

[0052] The difference between this embodiment and Embodiment 1 is that:

[0053] The tooling base 1 has a ring of positioning holes 13 around its outer edge, with a total of 20 positioning holes 13.

[0054] Experimental Example

[0055] The working principle of the tooling of this utility model will be briefly explained below using the actual machining steps of the workpiece as an experimental example.

[0056] The drawing of the part to be processed is as follows Figure 7 As shown, the annular surface is S-shaped, with an outer radius of only 6mm and an inner radius of only 4.5mm at the bend. The difficulty in machining the S-shaped irregular surface lies in its complexity. Due to its wall thickness of only 2mm and a maximum diameter of 750mm, the part is large and thin-walled, making it extremely prone to deformation under stress during machining.

[0057] We denote the machining of the outer end face as step A, during which the part is clamped using limiter 2. The machining of the inner end face is denoteed as step B, during which the part is fixed using groove 11. After upsetting and punching, the bar stock undergoes three rounds of ring rolling to obtain a forging with dimensions of Φ700×Φ670×140mm. Rough turning then creates a base for easy clamping. Figure 8 As shown, the outer profile and inner profile are obtained by rough machining. Figure 9 The rough-machined surface is shown.

[0058] First, clamp the part onto the production surface of tooling A. Then, rotate the limiting bolt 21 to raise it, placing the bottom of the part's inner end face below each limiting plate 22. Adjust the length of the front end plate 221 extending beyond the rear end plate 222 as needed, rotating it a multiple of 360° to ensure the front end plate 221 is parallel to the rear end plate 222. Then, rotate the limiting bolt 21 in the opposite direction to press the limiting plates 22 down, maintaining the clamping of the part. Finally, precision machine the outer surface, as shown below. Figure 10 As shown, the wall thickness of the part is 4mm at this time.

[0059] Then, the fixture base 1 is inverted and fixed through the positioning hole 13. Each limiting bolt 21 is screwed until it is flush with the limiting plate 22. The part is then clamped onto the production surface of fixture B for internal surface finishing. At this time, the groove 11 of the fixture base 1 conforms to the shape of the part, supporting it and preventing deformation during tooling. After finishing, the part wall thickness is 2mm, resulting in an S-shaped machined surface, as shown below. Figure 11 As shown.

Claims

1. A thin-walled special-shaped ring part profiling tooling, characterized in that, Includes a tooling base (1) and a plurality of limiting members (2) arranged around the upper surface of the tooling base (1); The limiting component (2) includes a limiting bolt (21) and a limiting plate (22). The limiting bolt (21) passes through the threaded hole (23) on the limiting plate (22) and is then threadedly connected to the tooling base (1). The tooling base (1) has a groove (11) on its bottom outer end face.

2. The thin-walled special-shaped ring part profiling tooling according to claim 1, characterized in that, The limiting member (2) is disposed on the positioning plate (12) provided on the upper surface of the tooling base (1).

3. The thin-walled special-shaped ring part profiling tooling according to claim 1, characterized in that, The limiting component (2) has a total of 10 to 15 components.

4. The thin-walled profile ring part copying tooling according to claim 1, characterized in that, The limiting plate (22) is divided into two parts: a front plate (221) and a rear plate (222). The threaded hole (23) is located on the rear plate (222). The rear end of the front plate (221) is provided with a threaded rod (223), and the threaded rod (223) is threadedly connected to the threaded groove (224) provided in the middle of the front end of the rear plate (222).

5. The thin-walled profile ring part copying tooling kit according to claim 1, characterized in that, The depth of the groove (11) is 1 / 4 to 1 / 3 of the height of the tooling base (1), and the width of the groove (11) is 1 / 10 to 1 / 8 of the radius of the tooling base (1).

6. The thin-walled profile ring part copying tooling kit according to claim 1, characterized in that, The tooling base (1) has a ring of positioning holes (13) at its outer edge, and there are 10 to 20 positioning holes (13).

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