CN113001112A - High-precision special-shaped metal core mold and machining method - Google Patents
High-precision special-shaped metal core mold and machining method Download PDFInfo
- Publication number
- CN113001112A CN113001112A CN202110215642.3A CN202110215642A CN113001112A CN 113001112 A CN113001112 A CN 113001112A CN 202110215642 A CN202110215642 A CN 202110215642A CN 113001112 A CN113001112 A CN 113001112A
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- Prior art keywords
- special
- machining
- core mold
- finish machining
- metal core
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- 239000002184 metal Substances 0.000 title claims abstract description 44
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 44
- 238000003754 machining Methods 0.000 title claims description 44
- 238000000034 method Methods 0.000 title abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000003672 processing method Methods 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 239000007769 metal material Substances 0.000 claims description 9
- 238000007747 plating Methods 0.000 claims description 9
- 238000005496 tempering Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 230000002265 prevention Effects 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 229910052602 gypsum Inorganic materials 0.000 claims description 5
- 239000010440 gypsum Substances 0.000 claims description 5
- 230000035882 stress Effects 0.000 claims description 5
- 238000004073 vulcanization Methods 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 238000005536 corrosion prevention Methods 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 230000007849 functional defect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to a high-precision special-shaped metal core mould and a processing method, belonging to the technical field of metal forming product manufacture. The invention has the advantages that: the preparation process is simple, the operation is convenient, the production cost is low, the molding method of the special-shaped metal core mold is simpler and easier to implement, the high size, shape and position precision of the special-shaped metal core mold can be ensured, the special-shaped metal core mold is not easy to deform, and the special-shaped metal core mold is particularly suitable for hollow rubber products with high size, shape and position precision requirements.
Description
Technical Field
The invention relates to a processing method of a metal product, in particular to a high-precision special-shaped metal core mold and a processing method, and belongs to the technical field of metal product manufacturing.
Background
When the uniformity of the inner surface and the wall thickness of hollow rubber products such as a special rubber pipe, a hollow sealing ring and the like has higher requirements, the hollow rubber products are subjected to auxiliary vulcanization molding by a metal core mold.
The traditional processing method of the closed special-shaped metal core mold comprises the following steps: 1. processing the materials into a required shape by the technological modes of stamping and bending, surface treatment and the like of a pipe bender; 2. the metal core modules with different shapes are combined together by welding to form the required closed special-shaped metal core module.
The traditional shaping method of the special-shaped metal core mold is simple and easy to implement, but the core mold has the functional defects of low size, shape and position precision, large internal stress, easy deformation and the like, and is only suitable for hollow rubber products with lower requirements on size, shape and position precision.
Disclosure of Invention
In order to overcome the functional defects of low size, shape and position precision, large internal stress, easy deformation and the like in the conventional core mold manufacturing process, the invention aims to provide the special-shaped metal core mold and the processing method thereof, so that the high-precision processing of the special-shaped metal core mold is realized, and the vulcanization molding requirements of different special-shaped rubber products can be met.
In order to achieve the purpose, the invention adopts the technical scheme that:
a high-precision special-shaped metal core mould is characterized in that a rigid filling support piece is used for pouring and filling a space formed by finish machining, or a rigid support piece matched with the space formed by finish machining is processed and matched in the space formed by finish machining, so that the support strength required by the finish machining on the other side is provided, the high-precision machining of a special-shaped piece can be realized, and the requirements required by vulcanization molding of different special-shaped rubber products are met; the special-shaped metal core mold for realizing the high-precision machining of the special-shaped metal core mold by utilizing the machining and other auxiliary production processes comprises the following steps: the closed special-shaped core mold with the same section shape and the closed special-shaped metal core mold with different section shapes; the section of the device can be of a closed round, square, rectangular and other special-shaped structures.
A high-precision special-shaped metal core mold and a processing method thereof are characterized by comprising the following steps:
firstly, preparing a blank: selecting a metal plate for blanking according to the size requirement of a core mould drawing, and cutting off a large amount of redundant materials to prepare a required blank;
secondly, rough machining:
1) finishing primary cutting machining on the upper surface and the lower surface of a metal plate according to the drawing requirement of a closed core die, namely reserving certain machining allowance on the basis of the drawing requirement to form a blank, so that the blank has finish machining conditions;
2) quenching and tempering and aging treatment: after quenching, high-temperature tempering is carried out at the temperature of 500-650 ℃, so that the performance and the material quality of the metal material are adjusted to a great extent, the strength, the plasticity and the toughness of the metal material are good, and the metal material has good comprehensive mechanical properties; after the tempering at the temperature of 150-250 ℃ and before finish machining, the workpiece is reheated to the temperature of 100-150 ℃ and kept for 5-20 hours, so that the residual stress is eliminated, and the structure and the size of the steel are stabilized;
thirdly, fine processing:
1) processing a reference surface;
2) semi-finishing: cutting one surface of the blank to a finish machining size required by a drawing;
3) pouring gypsum to fill the space formed by finish machining, or processing a rigid filling supporting piece matched with the space of the semi-finished piece, wherein the filled blank can be metal, nylon or plastic and is matched in the space formed by finish machining, thereby providing the supporting strength required by the finish machining of the other side;
4) the filled blank is inverted for 180 degrees, and the other surface is processed to the size of the drawing by the same reference surface;
fourthly, post-treatment:
1) the roughness is reduced by polishing;
2) surface plating treatment: for example, chromium plating and tetrafluoro plating enable the paint to have the characteristics of rust prevention, adhesion prevention, corrosion prevention and the like.
Compared with the prior art, the invention has the advantages that: the preparation process is simple, the operation is convenient, and the production cost is low. The method for forming the special-shaped metal core mold is simple and easy to implement, can ensure that the special-shaped metal core mold is high in size, shape and position precision and is not easy to deform, and is particularly suitable for hollow rubber products with high requirements on size, shape and position precision.
Drawings
FIG. 1 is a cross-sectional view taken along line A-A of a metal O-ring mandrel made in accordance with one embodiment of the present invention;
FIG. 2 is a sectional view of a blank and B-B of the present invention used to make a metal O-ring mandrel;
FIG. 3 is a cross-sectional view of the metal O-ring core mold and C-C according to the present invention;
FIG. 4 is a cross-sectional view of a single side of a metal O-ring mandrel with finish machining and taken along direction D-D in accordance with the present invention;
FIG. 5 is a schematic view of the support with a rigid compliant filler blank and a cross-sectional view in the direction of E-E for making a metal O-ring core die of the present invention.
Detailed Description
The present invention will be described in further detail with respect to a method of machining a metal O-ring core mold in an embodiment with reference to the accompanying drawings, in which fig. 1:
firstly, preparing a blank: according to the size requirement of a core mould drawing, a metal plate is selected for blanking, a large amount of redundant materials are cut off, and a required blank is prepared, and is shown in figure 2;
secondly, rough machining:
1) finishing primary cutting machining on the upper surface and the lower surface of a metal plate according to the drawing requirements, namely reserving certain machining allowance on the basis of the drawing requirements to form a blank, so that the blank has finish machining conditions, as shown in figure 3;
2) quenching and tempering and aging treatment: after quenching, high-temperature tempering is carried out at the temperature of 600-650 ℃, so that the performance and the material quality of the metal material are adjusted to a great extent, the strength, the plasticity and the toughness of the metal material are good, and the metal material has good comprehensive mechanical properties; after the tempering at the temperature of 200-250 ℃ and before the finish machining, the workpiece is reheated to the temperature of 120-150 ℃ and kept for 17-18 hours, so that the residual stress is eliminated, and the structure and the size of the steel are stabilized.
1) Processing a reference surface;
2) one side of the blank of the semi-finished part 1 is processed to the size required by the drawing, as shown in figure 4;
3) pouring gypsum to fill the space formed by finish machining, or processing a rigid filling supporting piece 2 matched with the space formed by finish machining to be gypsum, wherein the gypsum is shown in figure 5 and is matched in the space of the semi-finished piece 1, so that the supporting strength required by the finish machining of the other surface is provided;
4) and (5) reversing the filled blank by 180 degrees, and processing the other surface to the size of the drawing by using the same reference surface.
Fourthly, post-treatment:
1) the roughness is reduced by polishing;
2) surface plating treatment: for example, chromium plating and tetrafluoro plating enable the paint to have the characteristics of rust prevention, adhesion prevention, corrosion prevention and the like.
The above embodiments are merely illustrative of the technical solutions of the present invention and not restrictive, and modifications and equivalents may be made to the embodiments of the present invention without departing from the spirit and scope of the present invention, which is intended to be covered by the claims.
Claims (2)
1. A high-precision special-shaped metal core mould is characterized in that a rigid filling support piece is used for pouring and filling a space formed by finish machining, or a rigid support piece matched with the space formed by finish machining is processed and matched in the space formed by finish machining, so that the support strength required by the finish machining on the other side is provided, the high-precision machining of a special-shaped piece can be realized, and the requirements required by vulcanization molding of different special-shaped rubber products are met; the special-shaped metal core mold for realizing the high-precision machining of the special-shaped metal core mold by utilizing the machining and other auxiliary production processes comprises the following steps: the closed special-shaped core mold with the same section shape and the closed special-shaped metal core mold with different section shapes; the section of the device can be of a closed round, square, rectangular and other special-shaped structures.
2. A high-precision special-shaped metal core mold and a processing method thereof are characterized by comprising the following steps:
firstly, preparing a blank: selecting a metal plate for blanking according to the size requirement of a core mould drawing, and cutting off a large amount of redundant materials to prepare a required blank;
secondly, rough machining:
1) finishing primary cutting machining on the upper surface and the lower surface of a metal plate according to the drawing requirement of a closed core die, namely reserving certain machining allowance on the basis of the drawing requirement to form a blank, so that the blank has finish machining conditions;
2) quenching and tempering and aging treatment: after quenching, high-temperature tempering is carried out at the temperature of 500-650 ℃, so that the performance and the material quality of the metal material are adjusted to a great extent, the strength, the plasticity and the toughness of the metal material are good, and the metal material has good comprehensive mechanical properties; after the tempering at the temperature of 150-250 ℃ and before finish machining, the workpiece is reheated to the temperature of 100-150 ℃ and kept for 5-20 hours, so that the residual stress is eliminated, and the structure and the size of the steel are stabilized;
thirdly, fine processing:
1) processing a reference surface;
2) semi-finished part (1): cutting one surface of the blank to a finish machining size required by a drawing;
3) pouring gypsum to fill the space formed by finish machining, or processing a rigid filling supporting piece (2) matched with the space of the semi-finished piece (1), wherein the filled blank can be metal, nylon or plastic and is matched in the space formed by finish machining, so that the supporting strength required by the finish machining of the other surface is provided;
4) the filled blank is inverted for 180 degrees, and the other surface is processed to the size of the drawing by the same reference surface;
fourthly, post-treatment:
1) the roughness is reduced by polishing;
2) surface plating treatment: for example, chromium plating and tetrafluoro plating enable the paint to have the characteristics of rust prevention, adhesion prevention, corrosion prevention and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110215642.3A CN113001112A (en) | 2021-02-09 | 2021-02-09 | High-precision special-shaped metal core mold and machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110215642.3A CN113001112A (en) | 2021-02-09 | 2021-02-09 | High-precision special-shaped metal core mold and machining method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113001112A true CN113001112A (en) | 2021-06-22 |
Family
ID=76386284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110215642.3A Pending CN113001112A (en) | 2021-02-09 | 2021-02-09 | High-precision special-shaped metal core mold and machining method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113001112A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113715416A (en) * | 2021-06-23 | 2021-11-30 | 南京玻璃纤维研究设计院有限公司 | Fabric profiling mold |
-
2021
- 2021-02-09 CN CN202110215642.3A patent/CN113001112A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113715416A (en) * | 2021-06-23 | 2021-11-30 | 南京玻璃纤维研究设计院有限公司 | Fabric profiling mold |
| CN113715416B (en) * | 2021-06-23 | 2023-09-01 | 南京玻璃纤维研究设计院有限公司 | Fabric profiling mold |
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