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

Abstract

The invention discloses a core structure of an automobile liner die and a method thereof, relating to the technical field of numerical control processing, comprising a die base, wherein the top of the die base is provided with a core matching curved surface, the top of the die base is provided with a cavity, the core matching curved surface is distributed around the cavity, a reference boundary line is arranged at the position, which is offset by 8-10 mm, of the core matching curved surface from the boundary line of the cavity, a high-precision processing region is arranged in a region, which is relatively close to the cavity, of the core matching curved surface, a general-precision processing region is arranged in a region, which is relatively far away from the cavity, of the core matching curved surface, and the section difference between the high-precision processing region and the general-precision processing region is 0.02 mm. The cost for processing is reduced.

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. The utility model provides a core structure of car liner mould, includes mould base (1), its characterized in that: the mold comprises a mold base (1), wherein a core matching curved surface (2) is arranged at the top of the mold base (1), a cavity (3) is arranged at the top of the mold base (1), the core matching curved surface (2) is distributed around the cavity (3), a reference boundary line is arranged at the distance from the core matching curved surface (2) to the boundary line of the cavity (3), a high-precision machining region (4) is arranged in a region where the core matching curved surface (2) is relatively close to the cavity (3), a general-precision machining region (5) is arranged in a region where the core matching curved surface (2) is relatively far away from the cavity (3), a section difference exists between the high-precision machining region (4) and the general-precision machining region (5), another reference boundary line is arranged at a position where the general-precision machining region (5) is far away from the high-precision machining region (4), and a complete void avoiding region (6) is arranged at a position where the other reference boundary line is far away from the high-precision machining region (4), and a section difference exists between the general precision machining area (5) and the complete clearance area (6).

2. The core structure of the automobile gasket mold as set forth in claim 1, wherein a recess adapted to the automobile gasket body is formed in the cavity (3).

3. The core structure of an automobile gasket mold as set forth in claim 2, wherein said notches are two in number, and are circular and rectangular, respectively.

4. The core structure of the automobile gasket mold as claimed in claim 1, wherein mounting holes (7) are formed in two sides of the mold base (1), and the number of the mounting holes (7) is eleven.

5. The core structure of the automobile liner mold as claimed in claim 1, wherein the material of the mold base (1) is a high carbon low alloy.

6. The core structure of an automobile cushion mold according to claim 1, wherein a step difference provided between the general-precision machining region (5) and the completely empty-clearance region (6) is 0.3 mm.

7. The core structure of an automobile gasket mold as set forth in claim 1, wherein the step difference between the high-precision machining region (4) and the general-precision machining region (5) is 0.02 mm.

8. The core structure of an automobile cushion mold according to claim 1, wherein one of the reference boundary lines is provided at a position where the core-fitted curved surface (2) is offset from the boundary line of the cavity (3) by 8 to 10mm, and the other reference boundary line is provided at a position where the general-precision machining region (5) is located away from the high-precision machining region (4) by 8 to 10 mm.

9. The machining method of the mold core of the automobile gasket mold comprises a mold core matching curved surface, wherein a mold cavity and a matching curved surface to be machined are arranged on the mold core matching curved surface, and the matching curved surface to be machined 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.

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