Cold straightening device and method for complex castings

Abstract

The application relates to the technical field of casting production, in particular to a cold correction device for a complex-structure casting, which comprises a base, a first stand column, a plurality of second stand columns, a supporting block, a first limiting block and a second limiting block arranged above the base, and a support body of the casting is vertically placed above the base, the other end of the support body is located between the first limiting block and the supporting block, a mounting plate is located between the second limiting block and the second stand column, and a side support is suspended above the second stand column; after the support body is horizontally placed above the first stand column and the second stand column, the second stand column in the middle of the L-shaped arrangement does not contact the support body. The application can correct multiple positions of the casting, control the correction degree of each position of the casting, and make the same position not need to undergo repeated detection and correction processes, so that the correction efficiency is greatly improved, and the unification of the correction process is facilitated, and the quality of the casting is ensured.

Description

Technical Field

[0001] This invention relates to the field of casting production technology, and in particular to a cold straightening device and method for castings with complex structures. Background Technology

[0002] like Figure 1 As shown, the bumper mounting bracket includes a bracket body, side brackets, and a mounting plate. The planes containing the bracket body, side brackets, and mounting plate are perpendicular to each other. The bracket body, side brackets, and mounting plate are respectively provided with connection holes and weight-reducing holes. The bumper mounting bracket has a complex structure. When using investment casting, deformation of the casting is unavoidable during production processes such as wax pattern making and cooling. To ensure casting quality, cold straightening of the casting using tooling is necessary.

[0003] Because the bumper mounting bracket has three mutually perpendicular surfaces and a sleeve is provided at the end of the bracket body, in order to ensure the quality of the casting, the existing bumper mounting bracket requires multiple presses for straightening. Moreover, the straightening process relies entirely on the operator's experience. The same position of the casting needs to undergo multiple inspections and re-straightening processes. This not only involves many procedures and cumbersome operations, but also lacks a unified standard during the straightening process, making it difficult to ensure the consistency of the casting quality. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a cold straightening device and method for castings with complex structures. The device is reasonably designed and easy to use, and aims to solve the aforementioned problems.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: a cold straightening device for complex structure castings, including a base, a first column, several second columns, a support block, a first limiting block, and a second limiting block arranged above the base. The first column and several second columns are arranged in an L-shape. A spacing for accommodating the support body of the casting is provided between the first limiting block and the support block. The second limiting block is located on the inner side of the L-shape, and the first limiting block and the support block are located on the outer side of the L-shape. After the support body of the casting is vertically placed above the base, the sleeve of the support body is placed above the first column and in contact with the first column. The other end of the support body is located between the first limiting block and the support block. The mounting plate is located between the second limiting block and the second column. The side support of the casting is suspended above the second column. After the support body is placed flat above the first column and the second column, the second column in the middle of the L-shape arrangement does not contact the support body, while the first column and the remaining second columns are in contact with the support body.

[0006] Furthermore, the height of the support block is greater than the distance difference L between the sides of the support body.

[0007] Furthermore, after the other end of the support body is placed between the first limiting block and the support block, the inner sides of the first limiting block and the support block are in contact with or in clearance fit with the support body.

[0008] Furthermore, the top of the first column has two downward-sloping surfaces at both ends.

[0009] Furthermore, after the side support is suspended above the second column, the distance between the side support and the second column is 1-8cm.

[0010] Furthermore, the height difference between the first column and the second column is 0-5cm. Preferably, the height difference is 0-3cm.

[0011] On the other hand, a cold straightening method for a cold straightening device for a complex structure casting includes the following steps: 1) Straightening the front of the support body: The support body of the bumper mounting support is placed horizontally above the first column and the second column, with at least one first column in the middle not in contact with the support body, and the press applies pressure to the middle of the support body until the support body contacts the first column in the middle that is not in contact.

[0012] 2) Correcting the side of the support body: with the side bracket at the bottom and the support body perpendicular to the base, place the bumper mounting bracket on top of the base, with the sleeve end of the support body in contact with the base and the other end placed on top of the support block, so that the side bracket and the base are not in complete contact. The press applies pressure to the side of the support body until the side bracket contacts the base.

[0013] 3) Correcting the side bracket: With the side bracket on top and the support body perpendicular to the base, place the bumper mounting bracket on top of the base. The sleeve of the support body contacts the first column. The other end of the bracket body is located between the first limiting block and the support frame. The mounting plate is located between the second limiting block and the second column. The remaining second column is correspondingly set with the side bracket and does not contact the side bracket. The press applies pressure to the sleeve end near the side bracket and to the side bracket until the side bracket contacts one of the columns.

[0014] Furthermore, when correcting the side of the support body, the top of the bracket of the bumper mounting support abuts against the inside of the first column.

[0015] Furthermore, after each step of correction is completed, the dimensions of the casting are measured. If the correction requirements are not met, the corresponding steps are repeated for correction.

[0016] The beneficial effects of this invention are:

[0017] The cold straightening device of the present invention can achieve the straightening of multiple points of the casting. At the same time, the worker can control the degree of straightening of each point of the casting according to the cold straightening device of the present invention, so that the same point does not need to undergo multiple repeated inspections and re-straightening processes, which greatly improves the straightening efficiency. It also helps to achieve the standardization of the straightening process and ensure the quality of the casting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a structural diagram of a casting.

[0020] Figure 3 This is a top view of the present invention.

[0021] Figure 4 This is a top view when the lateral brace is being adjusted.

[0022] Figure 5 This is the front view when the lateral brace is being adjusted.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1—Base, 2—First column, 3—Second column, 4—Support block, 5—First limiting block, 6—Second limiting block, 7—Bumper mounting bracket, 71—Bracket body, 72—Side bracket, 73—Mounting plate, 74—Frame, L—Difference in distance between the sides of the bracket body. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0026] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] like Figures 1-5 As shown, a cold straightening device for a complex structure casting in this embodiment includes a base 1. A first column 2, several second columns 3, a support block 4, a first limiting block 5, and a second limiting block 6 are arranged above the base 1. Preferably, at least three second columns 3 are provided. The first column 2 and several second columns 3 are arranged along an L-shape. The first limiting block 5 is correspondingly arranged with the support block 4. A space for accommodating the support body 71 is provided between the first limiting block 5 and the support block 4. The second limiting block 6 is located inside the L-shape formed by the arrangement of the first column 2 and the second column 3. The first limiting block 5 and the support block 4 are located outside the L-shape. After the support body 71 of the bumper mounting bracket 7 is vertically placed above the base 1, the sleeve 74 of the support body 71 is placed above the first column 2, and... Contacting the first column 2, the other end of the support body 71 is located between the first limiting block 5 and the support block 4. The mounting plate 73 is located between the second limiting block 6 and the second column 3. The second limiting block 6 is L-shaped. On the one hand, under the action of the second column 3 and the second limiting block 6, it limits the position of the two sides of the mounting plate 73. At the same time, since the side bracket is an arc-shaped connecting rod, after the position of the outer end of the mounting plate 73 is limited by the L-shaped second limiting block 6, it ensures that the side bracket 72 is suspended above the second column 3. The correspondence between each second column 3 and the side bracket 72 ensures the correction quality of the side bracket. The side bracket of the bumper mounting support 7 is suspended above the second column 3, that is, the side bracket 72 of the bumper mounting support 7 does not contact the second column 3, and the second column 3 is correspondingly set with the side bracket 72. After the support body 71 is placed flat above the first column 2 and the second column 3, the second column 3 in the middle of the L-shaped arrangement does not contact the support body 71. Preferably, along the L-shaped direction, the second column 3 closer to the first column 2 does not contact the support body 71, while the first column 2 and the remaining second column 3 are in contact with the support body 71.

[0029] When correcting the side of the support body 71, the support body 71 is perpendicular to the base 1, the side bracket 72 is below, and the bumper mounting bracket 7 is placed above the base 1. The bracket 74 end of the support body 71 contacts the base 1, and the other end is placed on the support block 4. The height of the support block 4 is greater than the distance difference L between the sides of the support body 71, so that the side bracket 72 does not completely contact the base 1, thereby facilitating the press to correct from the side of the support body 71.

[0030] After the other end of the support body 71 is placed between the first limiting block 5 and the support block 4, the inner sides of the first limiting block 5 and the support block 4 are in contact with or have a clearance fit with the support body 71. When the press applies pressure to the sleeve 74 for correction, the first limiting block 5 and the support block 4 work together to clamp and fix the end of the support body 71, which is beneficial for the press to apply pressure to the sleeve 74, thereby ensuring the correction quality of the side support 72.

[0031] The top two ends of the first column 2 are downward sloping surfaces. When the side support 72 is being straightened, the press applies pressure to the end of the sleeve 74. The downward straightening distance of the sleeve 74 can be limited by the top sloping surface of the first column 2, thereby ensuring the quality and consistency of the straightening sleeve 74.

[0032] After the side support 72 is suspended above the second column 3, the distance between the side support 72 and the second column 3 is 1-8cm. This distance limits the distance under the side support during cold pressing straightening, thus ensuring the quality of the casting straightening. The height difference between the first column 2 and the second column 3 is 0-5cm, preferably 0-3cm. This height difference provides support and limits the straightening distance.

[0033] On the other hand, a cold straightening method for castings with complex structures includes the following steps:

[0034] 1) Correcting the front of the support body 71: Place the support body 71 of the bumper mounting support 7 horizontally above the first column 2 and the second column 3, with at least one of the first columns 2 in the middle not in contact with the support body 71. Apply pressure to the middle of the support body 71 with a press until the support body 71 comes into contact with the middle, non-contacting first column 2.

[0035] 2) Correcting the side of the support body 71: with the side bracket at the bottom and the support body 71 perpendicular to the base 1, place the bumper mounting support 7 on top of the base 1, with the sleeve 74 end of the support body 71 in contact with the base 1 and the other end placed on top of the support block 4, so that the side bracket is not in complete contact with the base 1. The press applies pressure to the side of the support body 71 until the side bracket contacts the base 1.

[0036] 3) Correcting the side bracket 72: The side bracket is on top, and the support body 71 is perpendicular to the base 1. The bumper mounting bracket 7 is placed on the base 1. The sleeve 74 of the support body 71 contacts the first column 2. The other end of the bracket body is located between the first limiting block 5 and the support frame. The mounting plate 73 is located between the second limiting block 6 and the second column 3. The remaining second column 3 is correspondingly set with the side bracket and does not contact the side bracket. The press applies pressure to the sleeve 74 end near the side bracket 72 and to the side bracket 72 until the side bracket 72 contacts one of the columns.

[0037] When the side of the support body 71 is being straightened, the top of the sleeve 74 of the bumper mounting support 7 abuts against the first column 2. When the press applies pressure to the side of the support body 71, the first column 2 can restrict the sleeve 74, thereby ensuring the straightening of the side of the support body.

[0038] After each step of the correction is completed, the dimensions of the casting are measured. If the correction requirements are not met, the corresponding steps are repeated for correction.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A cold straightening method for castings with complex structures, characterized in that: A cold straightening device for complex structure castings is disclosed. The device includes a base, on which a first column, several second columns, a support block, a first limiting block, and a second limiting block are arranged. The first column and several second columns are arranged in an L-shape. The second limiting block is located inside the L-shape, while the first limiting block and the support block are located outside the L-shape. The height of the support block is greater than the distance L between the sides of the support body. The second limiting block is L-shaped. The cold straightening method includes the following steps: 1) Correcting the front of the support body: Place the support body of the bumper mounting bracket horizontally above the first and second pillars, with at least one of the second pillars in the middle of the L-shaped arrangement not in contact with the support body. Apply pressure to the middle of the support body with a press until the support body contacts the middle second pillar. 2) Correcting the side of the support body: with the side bracket at the bottom and the support body perpendicular to the base, place the bumper mounting bracket on top of the base, with the sleeve end of the support body in contact with the base and the other end placed on top of the support block, so that the side bracket and the base are not in complete contact. The press applies pressure to the side of the support body until the side bracket contacts the base. 3) Correcting the side bracket: With the side bracket on top and the support body perpendicular to the base, place the bumper mounting bracket on the base. The sleeve of the support body contacts the first column. The other end of the support body is located between the first limiting block and the support block. The mounting plate is located between the second limiting block and the second column. The remaining second column is correspondingly set with the side bracket and does not contact the side bracket. The press applies pressure to the sleeve end near the side bracket and to the side bracket until the side bracket contacts one of the second columns.

2. The cold straightening method for complex structure castings according to claim 1, characterized in that: After the other end of the support body is placed between the first limiting block and the support block, the inner sides of the first limiting block and the support block are in contact with or have a clearance fit with the support body.

3. The cold straightening method for complex structure castings according to claim 1, characterized in that: The top of the first column has two downward sloping surfaces at both ends.

4. The cold straightening method for complex structure castings according to claim 1, characterized in that: After the side bracket is suspended above the second column, the distance between the side bracket and the second column is 1-8cm.

5. The cold straightening method for a complex structure casting according to claim 1, characterized in that: The height difference between the first column and the second column is 0-5cm.

6. The cold straightening method for a complex structure casting according to claim 1, characterized in that: When the side of the support body is being straightened, the top of the bracket of the bumper mounting support comes into contact with the inside of the first column.

7. The cold straightening method for a complex structure casting according to claim 1, characterized in that: After each step of the correction is completed, the dimensions of the casting are measured. If the correction requirements are not met, the corresponding steps are repeated for correction.

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