CN113183369A - Mold core structure of automobile gasket mold and processing method thereof - Google Patents

Mold core structure of automobile gasket mold and processing method thereof Download PDF

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CN113183369A
CN113183369A CN202110605204.8A CN202110605204A CN113183369A CN 113183369 A CN113183369 A CN 113183369A CN 202110605204 A CN202110605204 A CN 202110605204A CN 113183369 A CN113183369 A CN 113183369A
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precision machining
core
machining area
curved surface
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杨良
张树海
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Heyuan Golden 3d Intelligent Manufacturing Co ltd
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Heyuan Golden 3d Intelligent Manufacturing Co ltd
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    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/76—Cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/16—Working surfaces curved in two directions
    • B23C3/20—Working surfaces curved in two directions for shaping dies
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

本发明公开了一种汽车衬垫模具的型芯结构及其方法，涉及数控加工技术领域，包括模具底座，所述模具底座的顶部设置有型芯配合曲面，所述模具底座的顶部设置有型腔，所述型芯配合曲面分布在型腔的四周，所述型芯配合曲面距离所述型腔的交界线偏置8～10mm处设置有基准分界线，所述型芯配合曲面相对靠近型腔的区域设置有高精度加工区域，所述型芯配合曲面相对远离型腔的区域设置有一般精度加工区域，且所述高精度加工区域与一般精度加工区域的段差为0.02mm，本发明结构简单，实用性强，通过设置的高精度加工区域、一般精度加工区域和完全避空区域的配合使用可较大程度上降低加工所用的时间，降低加工所用的成本。

Figure 202110605204

The invention discloses a core structure of an automobile gasket mold and a method thereof, and relates to the technical field of numerical control machining. The core mating curved surface is distributed around the cavity, the core mating curved surface is offset from the boundary line of the cavity by 8 to 10 mm, and a reference boundary line is set, and the molding core mating curved surface is relatively close to the mold. The area of the cavity is provided with a high-precision machining area, and the area of the core mating surface relatively far away from the cavity is provided with a general-precision machining area, and the step difference between the high-precision machining area and the general-precision machining area is 0.02mm. The structure of the present invention It is simple and practical. The combination of the set high-precision processing area, general precision processing area and completely empty area can greatly reduce the processing time and the processing cost.

Figure 202110605204

Description

Mold core structure of automobile gasket mold and processing method thereof
Technical Field
The invention relates to the technical field of numerical control machining, in particular to a core structure of an automobile liner die and a machining method thereof.
Background
The existing machining method for the matching curved surface of the mold core of the automobile gasket mold is to directly perform integral cutting machining by using a milling cutter by using a designed 3D model, the area of the matching curved surface is large, the milling cutter is abraded in the machining process, the allowance of the matching curved surface is uneven, the dimensional precision is inaccurate, a grinding machine, abrasive paper and the like are required to be used for repairing and matching in the subsequent process of assembly, the workload of assembly personnel is increased, the appearance and the construction period of the mold are influenced, the manufacturing cost of the mold is increased, and the machining method does not accord with the characteristics of high numerical control machining efficiency and stable quality. Therefore, the existing mold core matching curved surface processing method is to be further improved.
Disclosure of Invention
The invention provides a core structure of an automobile liner die, which solves the technical problem that the machining size is not accurate due to the fact that the area of a matched curved surface is large in the machining process in the prior art.
In order to solve the technical problems, the core structure of the automobile liner mold comprises a mold base, wherein a core matching curved surface is arranged at the top of the mold base, a cavity is arranged at the top of the mold base, the core matching curved surface is distributed around the cavity, a reference boundary line is arranged at the position, which is offset from the boundary line of the cavity by 8-10 mm, of the core matching curved surface, a high-precision machining area is arranged in an area, which is relatively close to the cavity, of the core matching curved surface, a general-precision machining area is arranged in an area, which is relatively far away from the cavity, of the core matching curved surface, the section difference between the high-precision machining area and the general-precision machining area is 0.02mm, another reference boundary line is arranged at the position, which is far away from the high-precision machining area, of the 8-10 mm of the general-precision machining area, and a complete empty avoiding area is arranged at the position, which is far away from the high-precision machining area, of the other reference boundary line, and the section difference between the general precision machining area and the completely clearance area is 0.3 mm.
Preferably, the cavity is internally provided with a notch matched with the automobile gasket body.
Preferably, the number of the notches is two, and the notches are circular and rectangular, respectively.
Preferably, the two sides of the mold base are provided with eleven mounting holes.
Preferably, the material of the mold base is high-carbon low-alloy.
On the other hand, the invention provides a method for processing a mold core of an automobile liner mold, which comprises a mold core matching curved surface, wherein a mold cavity and a matching curved surface to be processed are arranged on the mold core matching curved surface, and the matching curved surface to be processed is distributed around the mold cavity, and is characterized by comprising the following steps of:
a first reference boundary is arranged on the core matching curved surface and is offset 8-10 mm from the boundary line between the core matching curved surface and the cavity;
setting the area of the core matching curved surface, which is relatively close to the cavity part, as a high-precision processing area; setting a region relatively far away from the cavity part as a general precision machining region, and forming a section difference of 0.02mm between the general precision machining region and the high precision machining region;
setting a second reference boundary line at a position 8-10 mm away from the high-precision machining area in the general precision machining area, setting a position away from the high-precision machining area as a complete clearance area, and forming a section difference of 0.3mm between the complete clearance area and the general machining precision area;
the completely empty-avoiding area is only processed in the middle, and finish machining is not needed; the finish machining process of the general precision machining area adopts a corresponding milling cutter and correspondingly set machining feed and cutting amount; the finish machining process of the high-precision machining area adopts a corresponding milling cutter and correspondingly set machining feeding and cutting amount;
and after finishing the high-precision machining area, detecting the machining allowance by using a ball-shaped milling cutter in a scribing mode, checking whether the high-precision machining area is in the shape and the size required by the matching of the core and the curved surface, if so, determining the high-precision machining area to be a qualified product, and if not, re-machining the high-precision machining area.
Compared with the related art, the core structure of the automobile gasket mold provided by the invention has the following beneficial effects:
1. when the device is used, a high-precision machining area, a general-precision machining area and a complete clearance area are arranged to be matched for use, so that a worker only needs to perform middle machining and does not need to perform finish machining when the complete clearance area is machined, the finish machining time of the complete clearance area and a milling cutter needing finish machining are saved, the machining cost is reduced, similarly, when the general-precision machining area is machined, a common finish machining milling cutter and large machining feeding and cutting amount are adopted, the finish machining time of the general-precision machining area and the milling cutter needing high-precision machining are shortened, the machining cost is reduced, and for the high-precision machining area, a brand-new milling cutter and a normal range of machining feeding and cutting amount are adopted in the finish machining process, so that stable and reliable machining precision is obtained, and the machining requirement of a core matching curved surface is met, meanwhile, after the machining is finished, a brand-new spherical milling cutter can be used for detecting machining allowance in a scribing mode so as to ensure that a high-precision machining area is the shape and the size required by the matching of the core and the curved surface, repeated machine installation and repair due to unqualified machining are avoided, and the device solves the problem that the machining size is not accurate due to the fact that the area of the matching curved surface is large in the machining process in the prior art.
2. When the device is used, the device can be conveniently installed by arranging the installation hole.
Drawings
FIG. 1 is a conventional numerical control machining method for a mating curved surface;
FIG. 2 is a schematic view of a core-fitted curved surface of a core structure of an automobile liner mold being graded;
FIG. 3 is a schematic illustration of a post-process rapid detection of process margin in a core structure of an automotive gasket mold;
fig. 4 is a schematic view showing the overall structure of a core structure of an automobile liner mold;
FIG. 5 is a schematic view of a novel method of forming a mating curved surface in a core structure of an automotive liner mold;
FIG. 6 is a conventional front and rear mold assembly;
FIG. 7 is a mold assembly for a new tooling method in the core structure of an automotive liner mold;
FIG. 8 is a schematic view of a core mating curve modification in a core structure of an automotive liner mold;
FIG. 9 is a schematic view of a completely void-free region in a core structure of an automotive liner mold;
FIG. 10 is a schematic view of a general precision machined area in the core structure of an automotive liner mold;
FIG. 11 is a schematic view of a high-precision machined area in a core structure of an automotive liner mold;
fig. 12 is a structural view illustrating a structure for rapidly detecting a process margin after processing in a core structure of an automobile liner mold.
Reference numbers in the figures: 1. a mold base; 2. the mold core is matched with the curved surface; 3. a cavity; 4. a high-precision machining area; 5. a general precision machining area; 6. a completely void-free area; 7. and (7) installing holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the first embodiment, as shown in fig. 1-12, the present invention includes a mold base 1, a core-fitting curved surface 2 is provided on the top of the mold base 1, a cavity 3 is provided on the top of the mold base 1, the core-fitting curved surface 2 is distributed around the cavity 3, a reference boundary line is provided at a position where the core-fitting curved surface 2 is offset 8-10 mm from the boundary line of the cavity 3, a high-precision machining region 4 is provided at a region of the core-fitting curved surface 2 relatively close to the cavity 3, a general-precision machining region 5 is provided at a region of the core-fitting curved surface 2 relatively far from the cavity 3, a step difference between the high-precision machining region 4 and the general-precision machining region 5 is 0.02mm, another reference boundary line is provided at a position of 8-10 mm of the general-precision machining region 5 far from the high-precision machining region 4, and a complete clearance region 6 is provided at a position of the other reference boundary line far from the high-precision machining region 4, and the section difference between the general precision machining area 5 and the complete clearance area 6 is 0.3 mm.
In the second embodiment, on the basis of the first embodiment, the cavity 3 is provided with a notch matched with the body of the automobile gasket, and the arrangement can facilitate the processing of the automobile gasket.
In the third embodiment, on the basis of the second embodiment, the number of the notches is two, and the notches are respectively circular and rectangular, so that the accuracy of processing the liner can be improved.
Fourth embodiment, on the basis of first embodiment, mounting holes 7 have been seted up to the both sides of mould base 1, and the quantity of mounting hole 7 is eleven, and this setting can conveniently install mould base 1.
In the sixth embodiment, the material of the mold base 1 is high-carbon low-alloy, and this arrangement utilizes the good stability of the high-carbon low-alloy, so as to prolong the service life of the apparatus.
On the other hand, the invention also provides a method for processing the core of the automobile gasket mold, which comprises a core matching curved surface, wherein the core matching curved surface is provided with a cavity and a matching curved surface to be processed, and the matching curved surface to be processed is distributed around the cavity, and is characterized by comprising the following steps of:
and arranging a first reference boundary line on the core matching curved surface at a position 8-10 mm away from the boundary line between the core matching curved surface and the cavity.
Setting the area of the core matching curved surface, which is relatively close to the cavity part, as a high-precision processing area; the region relatively far from the cavity part is set as a general precision machining region, the 3D model of the general precision machining region is reduced by 0.02mm, and a step difference of 0.02mm is formed between the general precision machining region and the high precision machining region.
And setting a second reference boundary line at a position 8-10 mm away from the high-precision machining area in the general precision machining area, setting a position away from the high-precision machining area as a complete clearance area, and reducing the 3D model of the complete clearance area by 0.3mm to form a section difference of 0.3mm between the complete clearance area and the general machining precision area.
The completely empty-avoiding area is only processed in the middle, and finish machining is not needed; the finish machining process of the general precision machining area adopts a corresponding milling cutter and correspondingly set machining feed and cutting amount; and the finish machining process of the high-precision machining area adopts a corresponding milling cutter and correspondingly set machining feeding and cutting amount. The machining feed amount of the high-precision machining region is smaller than that of the general precision machining region.
And after finishing the high-precision machining area, detecting the machining allowance by using a ball-shaped milling cutter in a scribing mode, checking whether the high-precision machining area is in the shape and the size required by the matching of the core and the curved surface, if so, determining the high-precision machining area to be a qualified product, and if not, re-machining the high-precision machining area.
When the milling cutter is used specifically, the high-precision machining area 4, the general-precision machining area 5 and the complete clearance area 6 are matched for use, so that a worker only needs to perform middle machining and does not need to perform finish machining when the complete clearance area 6 is machined, the finish machining time of the complete clearance area 6 and the milling cutter needing finish machining are saved, the machining cost is reduced, similarly, when the general-precision machining area 5 is machined, a common finish machining milling cutter and large machining feeding and cutting amount are adopted, the finish machining time of the general-precision machining area 5 and the milling cutter needing high-precision machining are shortened, the machining cost is reduced, and for the high-precision machining area 4, the corresponding milling cutter and the machining feeding and cutting amount in the normal range are adopted in the finish machining process, so that stable and reliable machining precision is obtained, and the machining requirement of the core matching curved surface is met, meanwhile, after the machining is finished, a brand-new spherical milling cutter can be used for detecting machining allowance in a scribing mode so as to ensure that the high-precision machining area 4 is the shape and the size required by the core matching curved surface, repeated machine installation and repair due to unqualified machining are avoided, and the device solves the problem that the machining size is not accurate due to the fact that the matching curved surface area is large in the machining process in the prior art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1.一种汽车衬垫模具的型芯结构，包括模具底座(1)，其特征在于：所述模具底座(1)的顶部设置有型芯配合曲面(2)，所述模具底座(1)的顶部设置有型腔(3)，所述型芯配合曲面(2)分布在型腔(3)的四周，所述型芯配合曲面(2)距离所述型腔(3)的交界线设置有基准分界线，所述型芯配合曲面(2)相对靠近型腔(3)的区域设置有高精度加工区域(4)，所述型芯配合曲面(2)相对远离型腔(3)的区域设置有一般精度加工区域(5)，且所述高精度加工区域(4)与一般精度加工区域(5)之间存在段差，所述一般精度加工区域(5)远离高精度加工区域(4)处设置有另一基准分界线，所述另一基准分界线远离高精度加工区域(4)的位置的设置有完全避空区域(6)，且所述一般精度加工区域(5)与完全避空区域(6)之间存在段差。1. A core structure of an automobile gasket mold, comprising a mold base (1), characterized in that: the top of the mold base (1) is provided with a core matching curved surface (2), and the mold base (1) A cavity (3) is provided at the top of the mold core, the matching curved surface (2) of the core is distributed around the cavity (3), and the matching curved surface (2) of the core is arranged from the boundary line of the cavity (3). There is a reference dividing line, a high-precision machining area (4) is provided in the area of the core matching curved surface (2) relatively close to the cavity (3), and the core matching curved surface (2) is relatively far away from the cavity (3). The area is provided with a general precision machining area (5), and there is a step difference between the high precision machining area (4) and the general precision machining area (5), and the general precision machining area (5) is far from the high precision machining area (4) ) is provided with another reference boundary line, and the position of the other reference boundary line far from the high-precision machining area (4) is provided with a complete void area (6), and the general precision machining area (5) and the complete There is a step difference between the avoidance areas (6). 2.根据权利要求1所述的一种汽车衬垫模具的型芯结构，其特征在于，所述型腔(3)内开设有与汽车衬垫本体相适配的凹口。2 . The core structure of an automobile liner mold according to claim 1 , wherein the cavity ( 3 ) is provided with a notch adapted to the automobile liner body. 3 . 3.根据权利要求2所述的一种汽车衬垫模具的型芯结构，其特征在于，所述凹口的数量为两个，且分别为圆形和矩形。3 . The core structure of an automobile gasket mold according to claim 2 , wherein the number of the notches is two, and they are respectively circular and rectangular. 4 . 4.根据权利要求1所述的一种汽车衬垫模具的型芯结构，其特征在于，所述模具底座(1)的两侧开设有安装孔(7)，所述安装孔(7)的数量为十一个。4. The core structure of an automobile gasket mold according to claim 1, wherein mounting holes (7) are provided on both sides of the mold base (1), and the mounting holes (7) are provided with mounting holes (7). The number is eleven. 5.根据权利要求1所述的一种汽车衬垫模具的型芯结构，其特征在于，所述模具底座(1)的材质为高碳低合金。5 . The core structure of an automobile gasket mold according to claim 1 , wherein the mold base ( 1 ) is made of high-carbon low-alloy. 6 . 6.根据权利要求1所述的一种汽车衬垫模具的型芯结构，其特征在于，所述一般精度加工区域(5)与完全避空区域(6)之间设置的段差为0.3mm。6 . The core structure of an automobile gasket mold according to claim 1 , wherein the step difference between the general precision machining area ( 5 ) and the complete void area ( 6 ) is 0.3 mm. 7 . 7.根据权利要求1所述的一种汽车衬垫模具的型芯结构，其特征在于，所述高精度加工区域(4)与一般精度加工区域(5)的段差为0.02mm。7 . The core structure of an automobile gasket mold according to claim 1 , wherein the step difference between the high-precision machining area ( 4 ) and the general-precision machining area ( 5 ) is 0.02 mm. 8 . 8.根据权利要求1所述的一种汽车衬垫模具的型芯结构，其特征在于，其中一个所述基准分界线设置在型芯配合曲面(2)距离所述型腔(3)的交界线偏置8～10mm处，另外一个所述基准分界线设置在一般精度加工区域(5)远离高精度加工区域(4)的8～10mm处。8 . The core structure of an automobile gasket mold according to claim 1 , wherein one of the reference boundary lines is set at the junction between the core mating curved surface (2) and the cavity (3). 9 . The line is offset by 8-10 mm, and the other reference boundary line is set at 8-10 mm from the general precision machining area (5) away from the high-precision machining area (4). 9.一种汽车衬垫模具的型芯的加工方法，包括型芯配合曲面，型芯配合曲面上设有型腔和待加工的配合曲面，待加工的配合曲面分布设于所述的型腔四周，其特征在于，所述方法包括以下步骤：9. A method for processing a core of an automobile gasket mold, comprising a core mating curved surface, a cavity and a mating curved surface to be processed are arranged on the mating curved surface of the core, and the mating curved surface to be processed is distributed and arranged in the cavity four weeks, it is characterised in that the method comprises the following steps: 在所述型芯配合曲面上，距离所述型芯配合曲面与所述型腔的交界线偏置8～10mm设置第一基准分界线；On the core matching curved surface, a first reference boundary line is set at an offset of 8-10 mm from the boundary line between the core matching curved surface and the cavity; 将所述型芯配合曲面相对靠近型腔部分的区域设置为高精度加工区域；相对远离型腔部分的区域设置为一般精度加工区域，并使一般精度加工区域与高精度加工区域形成0.02mm的段差；The area of the core mating surface relatively close to the cavity part is set as the high-precision machining area; the area relatively far from the cavity part is set as the general-precision machining area, and the general-precision machining area and the high-precision machining area form a 0.02mm diameter. segment difference; 将所述一般精度加工区域远离高精度加工区域的8～10mm处设置第二基准分界线，远离高精度加工区域的位置设置为完全避空区域，并使该完全避空区域与一般加工精度区域形成0.3mm的段差；The second reference boundary line is set at 8-10mm away from the high-precision machining area of the general precision machining area, and the position far from the high-precision machining area is set as a complete void area, and the complete void area and the general machining accuracy area are set. A step difference of 0.3mm is formed; 对于完全避空区域只要中加工即可，不用进行精加工；一般精度加工区域的精加工过程采用相应的铣刀与对应设定的加工进给、切削量；高精度加工区域的精加工过程采用相应铣刀与对应设定的加工进给、切削量；For the completely avoided area, only medium processing is required, and no finishing is required; the finishing process of the general precision machining area adopts the corresponding milling cutter and the corresponding set machining feed and cutting amount; the finishing process of the high-precision machining area adopts Corresponding milling cutter and correspondingly set machining feed and cutting amount; 高精度加工区域精加工完成后，再以球形铣刀采用划线的方式进行加工余量检测，查看高精度加工区域是否为型芯配合曲面需要的形状、尺寸，若是，则为合格品，若不是，则重新加工。After finishing the high-precision machining area, check the machining allowance with the spherical milling cutter by scribing to check whether the high-precision machining area is the shape and size required by the core to match the curved surface. If so, it is a qualified product. If not, rework it.
CN202110605204.8A 2021-05-31 2021-05-31 Mold core structure of automobile gasket mold and processing method thereof Pending CN113183369A (en)

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