Hot sizing tool and hot sizing method for annular reinforcer with conical molded surface
By designing a thermally shaped tool for annular conical reinforcement, combining the matching of the outer profile and extension profile with the limiting plate, the problem of inability to effectively control the roundness accuracy of the reinforcement in the prior art is solved, and precise control and deformation prevention of the roundness of the reinforcement is achieved.
Patent Information
- Application Number
- CN202411855780.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-03-21
AI Technical Summary
The prior art cannot effectively control the roundness accuracy of the annular conical surface reinforcement, resulting in a large deviation between the roundness of the post-welded reinforcement and the theoretical value.
A thermal calibration tool is designed, including the main body, lower plate, middle plate, upper plate and suspended ring. Through the coordination of the outer surface of the part and its extension surface and the limiting plate, thermal calibration of the ring conical reinforcement is achieved. The tooling material is made of 2Cr13 material with a thermal expansion coefficient similar to the part material to prevent deformation and position changes of the reinforcement during the thermal calibration process.
The roundness accuracy control of the annular conical surface reinforcement is achieved, ensuring that the roundness of the reinforcement after welding meets the requirements, and preventing deformation and position changes of the reinforcement during the thermal calibration process.
Smart Images
Figure CN119657694A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of thermal shaping control of sheet metal parts, and in particular relates to a thermal shaping tool and a thermal shaping method for an annular reinforcement part with a conical profile. Background Art
[0002] The annular reinforcement with a conical outer surface is welded together by its separate parts. Due to deformation caused by welding, there is a large deviation between the roundness of the reinforcement after welding and the theoretical value. Therefore, such reinforcements generally need to be optimized by heat correction after welding. The working principle of the traditional heat correction tooling is to perform a tight hoop correction on the part surface through the tooling surface consistent with the outer ring cone of the part, and to fix it through vacuum heat treatment. Since the traditional heat correction surface is limited to the part surface range of the reinforcement, for reinforcements with a small outer contour diameter after welding, there is a large gap between the part surface and the correction tooling surface, and effective contact cannot be achieved, and the heat correction effect cannot be achieved. For reinforcements with a large outer contour diameter after welding, the part surface and the correction tooling surface can only contact with the part surface of the small end of the cone due to the cooperation of the cone surface. The part surface of the large end of the cone cannot contact with the tooling surface because the diameter exceeds the correction tooling surface diameter, and the correction effect is not ideal. Summary of the invention
[0003] In view of this, the present invention aims to propose a thermal shaping tool and a thermal shaping method for an annular reinforcement with a conical profile, so as to solve the problem that the shaping method in the prior art cannot effectively control the roundness accuracy of the annular conical surface reinforcement.
[0004] To achieve the above object, the present invention adopts the following technical solutions:
[0005] A thermal correction tool for an annular reinforcement with a conical profile, comprising a main body, a lower plate, a middle plate, an upper plate and a lifting ring, wherein the lower plate is installed at the bottom of the main body, the reinforcement is placed on the lower plate, the middle plate is installed above the reinforcement, the upper plate is installed on the top of the main body, and the lifting ring is installed in a threaded hole in the middle of a circular boss at the center of the lower plate.
[0006] Furthermore, the main body, lower plate, middle plate, upper plate and lifting ring are all made of 2Cr13 material.
[0007] Furthermore, the reinforcement has a diameter of 400-500 mm and a heat correction temperature of 750°C.
[0008] Furthermore, threaded holes for connecting with the third screws are provided at the center positions of the four circular bosses evenly distributed in an annular manner on the lower plate.
[0009] Furthermore, the outer ring of the plate is evenly distributed with four through holes for cooperating with the first screws for connection.
[0010] Furthermore, the upper plate has eight threaded holes evenly distributed in the circumferential direction for cooperating with the second screws to apply a pressing force to the middle plate.
[0011] Furthermore, the inner ring of the upper plate is evenly distributed with four through holes for cooperating with the third screws.
[0012] A thermal shaping method for a thermal shaping tool for an annular reinforcement with a conical profile, comprising the following steps:
[0013] Step 1: First, place the lower plate equipped with the lifting ring at the bottom of the main body, and then install the reinforcement into the inner cavity of the main body along the profile;
[0014] Step 2: Place the middle plate on the reinforcement, fasten the upper plate to the main body with the first screw, and screw the second screw into the upper plate until the second screw contacts the middle plate;
[0015] Step 3: Install the third screw into the upper plate, lift the lower plate through the lifting ring, and tighten it through the third screw and the corresponding screw hole on the lower plate until the lower plate contacts the lower surface of the reinforcement;
[0016] Step 4: After the assembly is completed, the entire assembly is placed in a vacuum heat treatment furnace for thermal calibration;
[0017] Step 5: After the heat calibration is completed, remove the tooling.
[0018] Compared with the prior art, the present invention has the following beneficial effects:
[0019] 1. The present invention uses the outer profile of the part and its extended profile, in conjunction with the limiting plates at both end surfaces of the part, to achieve thermal calibration of reinforcements of various sizes within the diameter tolerance range of the annular conical reinforcement.
[0020] 2. The present invention uses a material with a thermal expansion coefficient close to that of the part material to manufacture the tooling, and loads the tooling into a vacuum heat treatment furnace in an assembled state for thermal correction, thereby achieving thermal correction of the roundness of the annular reinforcement.
[0021] 3. The function of the lower plate and the middle plate of the heat correction tooling of the present invention is to prevent deformation of the two end faces of the reinforcement frame during the heat correction process, and to prevent the parts from moving up, sinking or other types of position changes due to the difference in linear expansion coefficients between the tooling material and the part material, thereby affecting the roundness after heat correction and the remaining shape and position relationships of the parts. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:
[0023] Figure 1 It is a schematic diagram of the exploded structure of a thermal shaping tool for an annular reinforcement member with a conical profile according to the present invention;
[0024] Figure 2 The present invention is a cross-sectional view of a thermal shaping tool for an annular reinforcement member with a conical profile.
[0025] 1-main body, 2-lower plate, 3-reinforcement, 4-middle plate, 5-upper plate, 6-first screw, 7-second screw, 8-third screw, 9-lifting ring. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.
[0027] Specific implementation method 1: See Figure 1-2 To illustrate this embodiment, a thermal correction tool for an annular reinforcement with a conical profile includes a main body 1, a lower plate 2, a middle plate 4, an upper plate 5 and a lifting ring 9, wherein the lower plate 2 is installed at the bottom of the main body 1, a reinforcement 3 is placed on the lower plate 2, the middle plate 4 is installed above the reinforcement 3, the upper plate 5 is installed on the top of the main body 1, and the lifting ring 9 is installed in a threaded hole in the middle of the circular boss at the center of the lower plate 2, and threaded holes for connecting with the third screw 8 are provided at the center positions of the four circular bosses evenly distributed in an annular manner on the lower plate 2, four through holes for connecting with the first screw 6 are evenly distributed on the outer ring of the upper plate 5, eight threaded holes for cooperating with the second screw 7 to apply a clamping force to the middle plate 4 are evenly distributed on the upper plate 5 in an annular direction, and four through holes for cooperating with the third screw 8 are evenly distributed on the inner ring of the upper plate 5.
[0028] In this embodiment, the diameter of the reinforcement 3 is 400-500mm and the heat correction temperature is 750℃ as an example. The inner surface of the main body 1 is the outer surface of the reinforcement, which is an extended surface tooling of the conical surface of the outer surface of the reinforcement. A threaded hole is provided at the center of the circular boss at the center of the lower plate 2 for fixing the lifting ring 9 to facilitate the placement and removal of the lower plate 2. The center of the circular boss at four locations evenly distributed circumferentially of the lower plate 2 is provided with threaded holes for connection with the third screw 8. The outer ring of the upper plate 5 is evenly distributed with four through holes for cooperation with the first screw 6 and screw connection with the main body 1 for fastening. The upper plate 5 has eight threaded holes evenly distributed circumferentially for cooperation with the second screw 7 to apply a clamping force to the middle plate 4. The inner ring of the upper plate 5 has four through holes evenly distributed for cooperation with the third screw 8 and screw connection with the lower plate 2 to apply a tensioning force to the lower plate 2.
[0029] When the tool is heat-calibrated, first place the lower plate 2 equipped with the lifting ring on the bottom of the main body 1, then install the reinforcement 2 into the inner cavity of the main body 1 along the profile, and press it by external force so that the gap between the outer ring conical surface of the reinforcement and the tool is not greater than 0.2mm. Secondly, place the middle plate 4 on the reinforcement 3, and fasten the upper plate 5 to the main body 1 by the first screw 6. Thirdly, screw the second screw 7 into the upper plate 5 until the second screw 7 contacts the middle plate 4. Finally, install the third screw 8 into the upper plate 5, lift the lower plate 2 by the lifting ring 9, and fasten it to the corresponding screw hole of the lower plate 2 by the third screw 8 until the lower plate 2 is in contact with the middle plate 4. The plate 2 is assembled until the lower surface of the reinforcement 3 is completely in contact with the plate 2. At this point, the assembly work is completed and the entire assembly is placed in a vacuum heat treatment furnace for heat calibration. After the heat calibration is completed, the tooling is removed. At this time, the outer ring cone surface of the reinforcement is in a state after heat calibration, which can ensure that its roundness meets the requirements. The function of the lower plate 2 and the middle plate 4 of the heat calibration tooling is to prevent deformation of the two end surfaces of the reinforcement frame during the heat calibration process, and to prevent the parts from moving up, sinking or other types of position changes due to the difference in linear expansion coefficients between the tooling material and the part material, thereby affecting the roundness after heat calibration and the remaining shape and position relationships of the parts.
[0030] The main body 1, lower plate 2, middle plate 4, upper plate 5 and lifting ring 9 are all made of 2Cr13 material. The tooling is made of a material with a thermal expansion coefficient close to that of the part material. The assembled state is loaded into a vacuum heat treatment furnace for thermal correction to achieve thermal correction of the roundness of the annular reinforcement.
[0031] Specific implementation method 2: Based on implementation method 1, a thermal shaping method for a thermal shaping tool for an annular reinforcement with a conical profile is proposed, which includes the following steps:
[0032] Step 1: First, place the lower plate 2 equipped with the lifting ring 9 on the bottom of the main body 1, and then install the reinforcement 3 into the inner cavity of the main body 1 according to the profile;
[0033] Step 2: Place the middle plate 4 on the reinforcement 3, and then fasten the upper plate 5 to the main body 1 by means of the first screw 6, and then screw the second screw 7 into the upper plate 5 until the second screw 7 contacts the middle plate 4;
[0034] Step 3: Install the third screw 8 into the upper plate 5, lift the lower plate 2 through the lifting ring 9, and fasten the third screw 8 to the corresponding screw hole on the lower plate 2 until the lower plate 2 contacts the lower surface of the reinforcement 3;
[0035] Step 4: After the assembly is completed, the entire assembly is placed in a vacuum heat treatment furnace for thermal calibration;
[0036] Step 5: After the heat calibration is completed, remove the tooling.
[0037] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.
Claims
1. A thermal shaping tool for an annular reinforcement with a conical profile, characterized in that: The utility model comprises a main body (1), a lower plate (2), a middle plate (4), an upper plate (5) and a lifting ring (9), wherein the lower plate (2) is installed at the bottom of the main body (1), a reinforcing member (3) is placed on the lower plate (2), the middle plate (4) is installed above the reinforcing member (3), the upper plate (5) is installed at the top of the main body (1), and the lifting ring (9) is installed in a threaded hole in the middle of a circular boss at the center of the lower plate (2).
2. A thermal shaping tool for an annular reinforcement with a conical profile according to claim 1, characterized in that: The main body (1), the lower plate (2), the middle plate (4), the upper plate (5) and the hanging ring (9) are all made of 2Cr13 material.
3. A thermal shaping tool for an annular reinforcement member with a conical profile according to claim 1, characterized in that: The reinforcing member (3) has a diameter of 400-500 mm and a thermal shaping temperature of 750°C.
4. A thermal shaping tool for an annular reinforcement with a conical profile according to claim 1, characterized in that: The lower plate (2) has threaded holes for connecting with third screws (8) at the center positions of the four circular bosses evenly distributed in an annular pattern.
5. A thermal shaping tool for an annular reinforcement with a conical profile according to claim 4, characterized in that: The outer ring of the upper plate (5) is evenly distributed with four through holes for cooperating with the first screws (6) for connection.
6. A thermal shaping tool for an annular reinforcement member with a conical profile according to claim 5, characterized in that: The upper plate (5) is circumferentially evenly provided with eight threaded holes for cooperating with the second screws (7) to apply a pressing force to the middle plate (4).
7. A thermal shaping tool for an annular reinforcement member with a conical profile according to claim 5, characterized in that: The inner ring of the upper plate (5) is evenly distributed with four through holes for cooperating with the third screws (8).
8. A thermal shaping method for a thermal shaping tool for an annular reinforcement with a conical profile as claimed in any one of claims 1 to 7, characterized in that: It includes the following steps: Step 1: First, place the lower plate (2) equipped with the lifting ring (9) on the bottom of the main body (1), and then install the reinforcement (3) into the inner cavity of the main body (1) according to the profile; Step 2: Place the middle plate (4) on the reinforcement (3), then fasten the upper plate (5) to the main body (1) using the first screw (6), and then screw the second screw (7) into the upper plate (5) until the second screw (7) contacts the middle plate (4); Step 3: Install the third screw (8) into the upper plate (5), lift the lower plate (2) through the lifting ring (9), and fasten the lower plate (2) through the corresponding screw holes on the lower plate (2) through the third screw (8) until the lower plate (2) contacts the lower surface of the reinforcing member (3); Step 4: After the assembly is completed, the entire assembly is placed in a vacuum heat treatment furnace for thermal calibration; Step 5: After the heat calibration is completed, remove the tooling.