阅读说明：本技术 一种提高汽车模具合模效率的工艺方法 (Process method for improving mold closing efficiency of automobile mold ) 是由 韦新坚 阳向阳 于 2019-12-19 设计创作，主要内容包括：本发明公开了一种提高汽车模具合模效率的工艺方法,其特征在于,包括以下步骤：步骤S1：加工模具镶件的型面,开粗留余量；步骤S2：将模具镶件进行热处理；步骤S3：通过钳工将模具镶件的底面进行磨平；步骤S4：将模具镶件进行组装；步骤S5：精加工模具型面至尺寸；先对模具镶件的型面进行开粗留余量,对模具镶件进行热处理后,再钳工研磨模具镶件底面和精加工模具型面,避免模具型面在热处理之后发生变形,保证模具型面的尺寸公差要求,以及减少一次钳工打磨,省时省力,可有效提高生产效率。(The invention discloses a process method for improving the mold closing efficiency of an automobile mold, which is characterized by comprising the following steps of: step S1: processing the molded surface of the mold insert, and roughly leaving a margin; step S2: carrying out heat treatment on the mold insert; step S3: grinding the bottom surface of the mold insert by a bench worker; step S4: assembling the mold insert; step S5: finely processing the molded surface of the mold to the size; the molded surface of the mold insert is firstly subjected to rough cutting to leave allowance, and after the mold insert is subjected to heat treatment, the bottom surface of the mold insert and the molded surface of a finish machining mold are ground by a fitter, so that the mold molded surface is prevented from deforming after the heat treatment, the dimensional tolerance requirement of the mold molded surface is ensured, the requirement of one-time fitter grinding is reduced, time and labor are saved, and the production efficiency can be effectively improved.)

1. A process method for improving the mold closing efficiency of an automobile mold is characterized by comprising the following steps:

step S1: processing the molded surface of the mold insert, and roughly leaving a margin;

step S2: carrying out heat treatment on the mold insert;

step S3: grinding the bottom surface of the mold insert by a bench worker;

step S4: assembling the mold insert;

step S5: and finishing the molded surface of the mold to the size.

2. The process of improving mold clamping efficiency of an automobile mold as claimed in claim 1, wherein in step S1, the mold surface of the mold insert is machined by NC to leave a margin.

3. The process for improving the mold closing efficiency of the automobile mold according to any one of claims 1 or 2, wherein in the step S1, the margin of the thickness is opened by 0.3mm to 0.5 mm.

4. The process of improving mold clamping efficiency of an automobile mold as claimed in claim 1, wherein in step S5, the mold profile is finished to size by NC.

5. The process of improving mold closing efficiency of an automotive mold as claimed in claim 1, wherein in step S2, the mold insert is subjected to a hardening heat treatment.

6. The process of improving mold clamping efficiency of an automobile mold as claimed in claim 5, wherein in step S2, the mold insert is subjected to laser hardening.

7. The process method for improving the mold closing efficiency of the automobile mold as claimed in claim 6, characterized by comprising the following steps:

step S21: removing oil stains on the surface of the workpiece by using a cleaning agent;

step S22: uniformly coating the SiO2 light-absorbing coating on the surface of the mold insert by using a brush, wherein the pre-coating thickness is 0.02-0.05 mm;

step S23: naturally drying the SiO2 coating;

step S24: and a high-power CO2 laser is selected to rapidly scan the surface of the mold insert coated with the light absorption coating, so that the surface of the mold insert is rapidly heated and cooled.

8. The process method for improving the mold closing efficiency of the automobile mold as claimed in claim 1, wherein before step S1, the process analysis and simulation of the mold insert by 3D software are further included, a reasonable finite element analysis model is established, then the process analysis is performed on the finite element model, and finally the result of the finite element analysis is determined and a reasonable scheme is designed according to the model and the design requirements.

9. The process method for improving the mold closing efficiency of the automobile mold as claimed in claim 8, characterized by comprising the following steps:

step s 1: establishing parts by using 3D software and exporting iges files;

step s 2: pre-processing, introducing a drawing type and a contact mode, carrying out limited grid division, carrying out grid check and repair after division to ensure that the grid is reasonable and correct, then defining a forming tool and material attributes, selecting a material model and a unit formula, estimating the appearance of the blank, dividing the grid of the blank, and setting forming parameters;

step s 3: submitting to a solver for simulation calculation;

step s 4: carrying out post-treatment, carrying out stress strain and thickness analysis to obtain a forming limit diagram FLD, and finally obtaining the distance between the blank and a processing tool;

step s 5: and checking whether the result is satisfactory, if so, finding out the inconsistency analyzed by the site and the 3D software, and feeding the inconsistency back to the 3D software, wherein the improved scheme further guides the debugging of the site die until the qualified drawing die is called out.

Technical Field

The invention relates to a preparation method of an automobile mold, in particular to a process method for improving the mold closing efficiency of the automobile mold.

Background

The existing production process of the drawing die comprises the steps of machining a molded surface of a die insert through NC, grinding T0 pieces through a bench worker, carrying out heat treatment on the die insert, grinding the bottom surface of the die insert through the bench worker after the heat treatment is finished, and finally assembling the insert. However, the machining process causes the deformation of the die surface after the heat treatment, the dimensional tolerance of the die surface cannot meet the requirement, and the whole process needs two times of bench work polishing, thereby wasting time and labor, consuming long time and failing to meet the production requirement.

Accordingly, the prior art is yet to be improved and developed.

Disclosure of Invention

The invention aims to provide a process method for improving the die closing efficiency of an automobile die, and aims to solve the problems that the size precision of a molded surface is influenced because the molded surface of the die is deformed after heat treatment in the conventional drawing die production process, and time and labor are wasted because two times of bench work polishing is needed.

The technical scheme of the invention is as follows: a process method for improving the mold closing efficiency of an automobile mold comprises the following steps:

step S1: processing the molded surface of the mold insert, and roughly leaving a margin;

step S2: carrying out heat treatment on the mold insert;

step S3: grinding the bottom surface of the mold insert by a bench worker;

step S4: assembling the mold insert;

step S5: and finishing the molded surface of the mold to the size.

In the step S1, the molded surface of the mold insert is processed by NC, and a margin is left for the mold insert.

The process method for improving the mold closing efficiency of the automobile mold comprises the step S1, wherein a margin of 0.3mm-0.5mm is left in a rough manner.

In the process method for improving the mold clamping efficiency of the automobile mold, in step S5, the mold surface is finished to size by NC.

The process for improving the mold closing efficiency of the automobile mold comprises the step S2 of performing hardening heat treatment on the mold insert.

The process method for improving the mold closing efficiency of the automobile mold comprises the step S2 of carrying out laser quenching hardening treatment on the mold insert.

The process method for improving the mold closing efficiency of the automobile mold specifically comprises the following steps:

step S21: removing oil stains on the surface of the workpiece by using a cleaning agent;

step S22: uniformly coating the SiO2 light-absorbing coating on the surface of the mold insert by using a brush, wherein the pre-coating thickness is 0.02-0.05 mm;

step S23: naturally drying the SiO2 coating;

step S24: and a high-power CO2 laser is selected to rapidly scan the surface of the mold insert coated with the light absorption coating, so that the surface of the mold insert is rapidly heated and cooled.

The process method for improving the mold closing efficiency of the automobile mold comprises the steps of performing process analysis and simulation on the mold insert through 3D software before step S1, establishing a reasonable finite element analysis model, performing process analysis on the finite element model, and finally judging a finite element analysis result and designing a reasonable scheme according to the model and design requirements.

The process method for improving the mold closing efficiency of the automobile mold specifically comprises the following steps:

step s 1: establishing parts by using 3D software and exporting iges files;

step s 2: pre-processing, introducing a drawing type and a contact mode, carrying out limited grid division, carrying out grid check and repair after division to ensure that the grid is reasonable and correct, then defining a forming tool and material attributes, selecting a material model and a unit formula, estimating the appearance of the blank, dividing the grid of the blank, and setting forming parameters;

step s 3: submitting to a solver for simulation calculation;

step s 4: carrying out post-treatment, carrying out stress strain and thickness analysis to obtain a forming limit diagram FLD, and finally obtaining the distance between the blank and a processing tool;

step s 5: and checking whether the result is satisfactory, if so, finding out the inconsistency analyzed by the site and the 3D software, and feeding the inconsistency back to the 3D software, wherein the improved scheme further guides the debugging of the site die until the qualified drawing die is called out.

The invention has the beneficial effects that: the invention provides a process method for improving the mold closing efficiency of an automobile mold, which is characterized by comprising the following steps of: step S1: processing the molded surface of the mold insert, and roughly leaving a margin; step S2: carrying out heat treatment on the mold insert; step S3: grinding the bottom surface of the mold insert by a bench worker; step S4: assembling the mold insert; step S5: finely processing the molded surface of the mold to the size; the molded surface of the mold insert is firstly subjected to rough cutting to leave allowance, and after the mold insert is subjected to heat treatment, the bottom surface of the mold insert and the molded surface of a finish machining mold are ground by a fitter, so that the mold molded surface is prevented from deforming after the heat treatment, the dimensional tolerance requirement of the mold molded surface is ensured, the requirement of one-time fitter grinding is reduced, time and labor are saved, and the production efficiency can be effectively improved.

Drawings

FIG. 1 is a flow chart of the steps of the process for improving the mold clamping efficiency of the automobile mold.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

As shown in fig. 1, a process method for improving mold closing efficiency of an automobile mold comprises the following steps:

step S1: processing the molded surface of the mold insert, and roughly leaving a margin;

step S2: carrying out heat treatment on the mold insert;

step S3: grinding the bottom surface of the mold insert by a bench worker;

step S4: assembling the mold insert;

step S5: and finishing the molded surface of the mold to the size.

Among this technical scheme, open the profile of mould mold insert earlier and roughly leave the surplus, carry out thermal treatment back to the mould mold insert, pincers worker grinds mould mold insert bottom surface and finish machining mould profile again, avoids the mould profile to take place to warp after thermal treatment, guarantees the dimensional tolerance requirement of mould profile to and reduce once pincers worker and polish, labour saving and time saving can effectively improve production efficiency.

Specifically, in step S1, the mold surface of the mold insert is machined by NC (numerical control) to leave a rough margin.

Further, in the step S1, a margin of 0.3mm to 0.5mm is left.

Specifically, in the step S5, the mold surface is finished to size by NC.

Specifically, in step S2, the mold insert is subjected to a hardening heat treatment to increase the surface hardness and increase the wear resistance of the mold insert.

Further, in step S2, the laser quenching hardening treatment of the mold insert specifically includes the following steps:

step S21: removing oil stains on the surface of the workpiece by using a cleaning agent;

step S22: uniformly coating the SiO2 light-absorbing coating on the surface of the mold insert by using a brush, wherein the pre-coating thickness is 0.02-0.05 mm;

step S23: naturally drying the SiO2 coating;

step S24: and a high-power CO2 laser is selected to rapidly scan the surface of the mold insert coated with the light absorption coating, so that the surface of the mold insert is rapidly heated and cooled.

Further, in step S24, the laser power P = 2000-5000W and the scanning speed V = 200-800 mm/min.

Because the production efficiency is seriously affected by the fact that the production process needs to be stopped for solving the defects and deficiencies, the process method for improving the mold closing efficiency of the automobile mold further comprises the following steps before the step S1: the method comprises the following steps of carrying out process analysis and simulation on a mold insert by using 3D software, establishing a reasonable finite element analysis model, carrying out process analysis on the finite element model, and finally judging a finite element analysis result and designing a reasonable scheme according to the model and design requirements, wherein the method specifically comprises the following steps:

step s 1: establishing parts by using 3D software and exporting iges files;

step s 2: pre-processing, introducing a drawing type and a contact mode, carrying out limited grid division, carrying out grid check and repair after division to ensure that grids are reasonable and correct, then defining a forming tool (a die insert) and material attributes, selecting a material model and a unit formula, pre-estimating the appearance of a blank, dividing the grids of the blank, and setting forming parameters;

step s 3: submitting to a solver for simulation calculation;

step s 4: carrying out post-treatment, carrying out stress strain and thickness analysis to obtain a forming limit diagram FLD, and finally obtaining the distance between the blank and a processing tool;

step s 5: and checking whether the result is satisfactory, if so, finding out the inconsistency analyzed by the site and the 3D software, and feeding the inconsistency back to the 3D software, wherein the improved scheme further guides the debugging of the site die until the qualified drawing die is called out.

According to the technical scheme, by applying the CAE technology, the design function can be increased, the reasonability of product design is ensured by means of computer analysis and calculation, and the design cost is reduced; shortening the cycle period of design and analysis; the CAE analysis plays a role of a virtual prototype, so that the process of physical prototype verification design with great resource consumption in the traditional design is replaced to a great extent, and the virtual prototype can predict the reliability of the product in the whole life cycle; the optimal design scheme of the product design is found out by adopting the optimal design, so that the consumption or the cost of materials is reduced; potential problems are found in advance before product manufacturing or engineering construction; various test schemes are simulated, and the test time, the expenditure and the like are reduced.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.