Support casting for improving cold shut and shrinkage cavity of guide column
By designing the thin-walled portion and drainage portion of the blind hole structure in the guide column of the bracket casting, the problem of cold partition and shrinkage of the guide column after casting is solved, and the uniform wall thickness and sufficient filling of the guide column are achieved, and breakage is avoided.
Patent Information
- Application Number
- CN202421618059.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-09
AI Technical Summary
The guide columns in existing bracket castings are prone to cold partitions and shrinkage defects after casting, resulting in frequent breakage when the guide column is subjected to stress.
A bracket casting is designed to improve the cold partition and shrink hole of the guide column. The guide column has a blind hole structure inside, and the bottom wall is provided with a thin wall portion and a drainage portion, and the drainage portion is located on the side of the thin wall portion.
Through the design of the thin-walled part and the drainage part, the uniformity of the wall thickness of the guide column is achieved, shrinkage defects are avoided, and more alloy melt is drained through the drainage part, which avoids cold space defects, thereby improving the filling and fullness of the guide column and preventing breakage.
Smart Images
Figure CN222817905U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of casting production, in particular to a bracket casting capable of improving cold shut and shrinkage holes of a guide column. Background Art
[0002] The surface of the bracket casting is generally designed with guide columns to facilitate the assembly and matching of the bracket casting with other parts.
[0003] Bracket castings are generally produced by casting. Specifically, a casting mold is designed according to the shape of the bracket casting. After the alloy melt is injected into the casting mold, the bracket casting is obtained by waiting for the alloy melt to cool and form. Due to the influence of the casting mold structure and the injection pressure of the alloy melt, the bracket casting after casting often has cold shut and shrinkage defects at the guide column position. The cold shut defect specifically refers to: the alloy melt is not fully filled in the casting part during casting, resulting in dents or pits on the casting surface; the shrinkage defect specifically refers to the uneven thickness of the side wall of a certain part of the casting during casting, and the cavity caused by shrinkage on the over-thick side wall surface. The above two defects will cause the guide column to break when subjected to force, seriously affecting the quality reliability of the bracket casting product, and affecting the appearance of the bracket casting product.
[0004] Therefore, finding a technical solution that can solve the above technical problems has become an important topic studied by technical personnel in this field. Utility Model Content
[0005] The utility model embodiment discloses a bracket casting with improved cold shut and shrinkage holes of the guide column, which is used to solve the technical problem that the guide column in the existing bracket casting is prone to cold shut and shrinkage holes after casting, thereby causing the guide column to often break when subjected to force.
[0006] An embodiment of the utility model provides a bracket casting which improves cold shut and shrinkage holes of a guide column, wherein a guide column is formed on the first surface of the bracket casting, the interior of the guide column is a blind hole structure, and the bottom wall of the blind hole structure is provided with a thin-walled portion and a drainage portion, wherein the drainage portion is located on the side of the thin-walled portion.
[0007] Optionally, the thin-walled portion is a material reduction groove formed by the bottom wall of the blind hole structure being recessed downward.
[0008] Optionally, the material reduction groove is a cross groove, a Pozigzag groove, or a cross groove.
[0009] Optionally, the drainage portion is a drainage rib protruding from the bottom wall of the blind hole structure.
[0010] Optionally, the drainage ribs are U-shaped drainage ribs.
[0011] Optionally, the thickness of the drainage rib is 1.5 mm to 3 mm.
[0012] Optionally, the height of the drainage rib is the depth of the blind hole structure.
[0013] Optionally, the thin-walled portion and the drainage portion are an integrally cast structure with the guide column.
[0014] Optionally, the cross section of the guide column is a cross-shaped structure.
[0015] Optionally, there are two drainage parts, and the two drainage parts are symmetrically arranged with the center point of the thin-walled part as the symmetry axis.
[0016] It can be seen from the above technical solutions that the embodiments of the utility model have the following advantages:
[0017] In the bracket casting of the present embodiment, a guide column is formed on the first surface of the bracket casting, and the interior of the guide column is a blind hole structure. The bottom wall of the blind hole structure is provided with a thin-walled portion and a drainage portion, wherein the drainage portion is located on the side of the thin-walled portion. In the above design, the thin-walled portion can make the wall thickness of the guide column more uniform, avoiding the shrinkage cavity caused by the excessive thickness of the side wall of the guide column after casting; the drainage portion can drain more alloy melt to the position of the guide column during the casting process, so that the guide column is filled more fully, avoiding the cold shut after the guide column is cast. Through the above design, the cold shut and shrinkage cavity problems of the bracket casting can be effectively improved, and the guide column can be prevented from breaking when it is subjected to force. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A schematic diagram of the first surface structure of a bracket casting for improving cold shut and shrinkage of a guide column provided by an embodiment of the utility model;
[0020] Figure 2 A schematic diagram of the second surface structure of a bracket casting for improving cold shut and shrinkage of a guide column provided by an embodiment of the utility model;
[0021] Figure 3 for Figure 2 A magnified view of the structure;
[0022] Illustration: bracket casting 1; guide column 2; blind hole structure 201; thin-walled part 202; drainage part 203. DETAILED DESCRIPTION
[0023] The utility model embodiment discloses a bracket casting with improved cold shut and shrinkage holes of the guide column, which is used to solve the technical problem that the guide column in the existing bracket casting is prone to cold shut and shrinkage holes after casting, thereby causing the guide column to often break when subjected to force.
[0024] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.
[0025] See also Figures 1 to 3 The utility model embodiment provides a bracket casting for improving cold shut and shrinkage cavity of the guide column. The first surface of the bracket and the casting 1 is formed with a guide column 2, and the interior of the guide column 2 is a blind hole structure 201. The bottom wall of the blind hole structure 201 is provided with a thin-walled portion 202 and a drainage portion 203, wherein the drainage portion 203 is located on the side of the thin-walled portion 202.
[0026] In the above design, the thin-walled portion 202 can make the wall thickness of the guide column 2 more uniform, avoiding shrinkage holes caused by shrinkage after casting due to excessive thickness of the side wall of the guide column 2; the drainage portion 203 can drain more alloy melt to the position of the guide column 2 during the casting process, so that the guide column 2 is filled more fully, avoiding the cold shut after casting of the guide column 2. Through the above design, the cold shut and shrinkage hole problems of the bracket and the casting 1 can be effectively improved, and the guide column 2 can be prevented from breaking when subjected to force.
[0027] Furthermore, the thin-walled portion 202 in this embodiment is a material reduction groove formed by the bottom wall of the blind hole structure 201 being recessed downward.
[0028] It should be noted that, through the design of the above-mentioned material reduction groove, the excessively thick portion of the side wall of the guide column 2 can be thinned, thereby achieving a uniform thickness of the side wall of the guide column 2 and avoiding shrinkage defects in the guide column 2.
[0029] Specifically, the material reduction groove in this embodiment is a cross groove, a mitre groove, or a cross groove.
[0030] It should be noted that the specific structure of the material reduction groove is not limited in this embodiment, and the designer can select a material reduction groove with different structures according to the different structures of the guide column 2 in this embodiment.
[0031] Furthermore, the drainage portion 203 in this embodiment is a drainage rib protruding from the bottom wall of the blind hole structure 201 .
[0032] It should be noted that, through the design of the drainage ribs, more molten alloy can be drained to the position of the guide column 2 during the casting process, so that the guide column 2 is filled more fully.
[0033] Specifically, the drainage ribs in this embodiment are U-shaped drainage ribs.
[0034] It should be noted that this embodiment does not restrict the specific structure of the drainage ribs, and designers can select drainage ribs with different structures according to the different structures of the guide column 2 in this embodiment.
[0035] Furthermore, the thickness of the drainage ribs in this embodiment is 1.5 mm to 3 mm.
[0036] It should be noted that when the side wall of the guide column 2 in this embodiment is relatively thin, the thickness of the guide rib is as large as possible so as to obtain more alloy to easily fill the guide column 2;
[0037] When the side wall of the guide column 2 in this embodiment is relatively thick, the thickness of the guide rib is as small as possible to obtain more alloy to easily fill the guide column 2.
[0038] Furthermore, in order to enable the drainage ribs to better drain the molten alloy, the height of the drainage ribs is preferably equal to the depth of the blind hole structure 201 .
[0039] Furthermore, the thin-walled portion 202 and the drainage portion 203 in this embodiment are an integrally cast structure with the guide column 2 .
[0040] It should be noted that, through the above design, the structural integrity of the guide column 2 can be effectively improved.
[0041] Furthermore, the cross section of the guide post 2 in this embodiment is a cross-shaped structure.
[0042] It should be noted that the present embodiment does not limit the specific shape of the guide column 2 , and designers can design guide columns 2 of different shapes according to assembly requirements.
[0043] Furthermore, the number of the drainage portions 203 in this embodiment is two, and the two drainage portions 203 are symmetrically arranged with the center point of the thin-walled portion 202 as the symmetry axis.
[0044] It should be noted that, through the above design, the two drainage parts 203 can drain more molten alloy to the position of the guide column 2, so that the guide column 2 is filled more fully, and the cold shut defect of the guide column 2 is effectively solved.
[0045] The above is a detailed introduction to a bracket casting for improving cold shut and shrinkage holes of a guide column provided by the utility model. For a general technician in this field, according to the idea of the embodiment of the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.
Claims
1. A bracket casting for improving cold shut and shrinkage of a guide column, wherein a guide column is formed on the first surface of the bracket casting, and the interior of the guide column is a blind hole structure, characterized in that: The bottom wall of the blind hole structure is provided with a thin-walled portion and a drainage portion, wherein the drainage portion is located on the side of the thin-walled portion.
2. The bracket casting for improving cold shut and shrinkage cavity of the guide column according to claim 1 is characterized in that: The thin-walled portion is a material reduction groove formed by the bottom wall of the blind hole structure being recessed downward.
3. The bracket casting for improving cold shut and shrinkage cavity of the guide column according to claim 2 is characterized in that: The material reduction groove is a cross groove, a M-shaped groove or a cross groove.
4. The bracket casting for improving cold shut and shrinkage cavity of the guide column according to claim 1, characterized in that: The drainage portion is a drainage rib protruding outward from the bottom wall of the blind hole structure.
5. The bracket casting for improving cold shut and shrinkage cavity of the guide column according to claim 4 is characterized in that: The drainage rib position is a U-shaped drainage rib position.
6. The bracket casting for improving cold shut and shrinkage cavity of the guide column according to claim 4, characterized in that: The thickness of the drainage ribs is 1.5 mm to 3 mm.
7. The bracket casting for improving cold shut and shrinkage cavity of the guide column according to claim 4, characterized in that: The height of the drainage rib is equal to the depth of the blind hole structure.
8. The bracket casting for improving cold shut and shrinkage cavity of the guide column according to claim 1, characterized in that: The thin-walled portion, the drainage portion and the guide column are an integrally cast structure.
9. The bracket casting for improving cold shut and shrinkage cavity of the guide column according to claim 1, characterized in that: The cross section of the guide column is a cross-shaped structure.
10. The bracket casting for improving cold shut and shrinkage cavity of the guide column according to claim 1, characterized in that: The number of the drainage parts is two, and the two drainage parts are symmetrically arranged with the center point of the thin-walled part as the symmetry axis.