CN102794849B - Manufacturing method for sample of quickly forming instrument desk for airbag calibration - Google Patents

Abstract

The invention relates to a manufacturing method for a sample of a quickly forming instrument desk for airbag calibration, which comprises the following steps: 1) analyzing a three-dimensional digital analog of the product, dividing into modules for machining and exporting the data of a numerical control machine tool; 2) milling splicing blocks in various shape on an ABS (Anti-lock Brake System) plate by the numerical control machine tool according to the data, splicing the splicing blocks into an instrument desk, and manually finishing, thereby finishing CNC (Computerized Numerical Control) manufacturing; 3) manufacturing a silica gel mould; and 4) manufacturing a quickly forming sample. The step 4) further comprises the following sub-steps: 41) mixing polyhydric alcohol liquid and isocyanate liquid at a weight ratio of 1:2 at room temperature, wherein the mixing time is 6.5 minutes to 10 minutes; 42) injecting the mixed liquid obtained from the step 41) into a vacuumized mould; and 43) heating and curing the mould processed in the step 42) and keeping the mould temperature at 60 DEG C, wherein the time for heating and curing is 8-10 minutes.

Description

For the rapid shaping instrument desk exemplar preparation method of airbag calibration

Technical field

The present invention relates to technical field of vehicle, particularly relate to a kind of preparation method of the rapid shaping instrument desk exemplar for airbag calibration.

Background technology

The current instrument desk for airbag calibration is essentially the part that formal mould is produced.The formal mould of instrument desk needs through making in about 3 months, and this mold acceptance is qualified just can carry out the assembling of complete machine and carry out various examination afterwards.For the unreasonable part of the design found in examination, need to modify to original design, more corresponding mould to be modified.Revise product on mould, wait the laggard row calibration experiment of product.

Instrument desk is that in interior exterior trim, structure is the most complicated, the integrated maximum part of functional module, the fabrication cycle of its mould generally needs about 3 months, and the development cost of mould are large, at Amending design, cause a large amount of repetitive work in perfect frame and manufacture process, the manufacturing cycle of mould is lengthened, finally causes modification time to account for 20% ~ 30% of whole Production Time.And the update cost produced compared with multi-mould, the mould through constantly amendment can be subject to certain impact its service life, also will bear the risk of mould development failure.And usually rapid shaping exemplar can not meet the requirement of impact test in performance, normal data acquisition cannot be carried out.

Summary of the invention

In order to the instrument desk Mold Making cost solved for airbag calibration in prior art is high, expend time in length, and the problem of instrument desk rapid shaping exemplar collision performance deficiency, the invention provides a kind of rapid shaping instrument desk exemplar preparation method for airbag calibration.

In order to achieve the above object, the technical solution used in the present invention is: a kind of rapid shaping instrument desk exemplar preparation method for airbag calibration, comprises the following steps:

Step 1: the three-dimensional digital-to-analogue of product is analyzed, splits into the module of machining, and derive the data of Digit Control Machine Tool;

Step 2: Digit Control Machine Tool mills out ABS buttress the splicing block of each shape according to data, then each part is spliced into instrument desk, and complete CNC making through hand finish;

Step 3: silica gel mould makes;

Step 4: rapid shaping exemplar makes;

Following sub-step is specifically comprised in described step 4:

Step 41: under room temperature, mixes polyol liquid and isocyanates liquid according to the weight ratio of 1:2, and incorporation time is 6.5 minutes ~ 10 minutes;

Step 42: by step 41 gained mixed liquor under the environment of 25 DEG C ~ 35 DEG C, injects the mould vacuumized;

Step 43: by the mold heated solidification after described step 42, keep mold temperature to be 60 DEG C, the time of being heating and curing is 8 minutes ~ 10 minutes.

Further, in described step 41, the incorporation time of described mixed liquor under the environment of 25 DEG C is 10 minutes.

Further, in described step 41, the incorporation time of described mixed liquor under the environment of 35 DEG C is 6.5 minutes.

Further, described polyol liquid is viscosity is 1000mPa, proportion is the milky white liquid of 1.11.

Further, the viscosity that described isocyanates liquid is is 3000mPa, proportion is the milky white liquid of 1.17.

The invention has the beneficial effects as follows: adopt the preparation method of rapid shaping instrument desk exemplar of the present invention to make instrument desk exemplar, the time is short and can meet for collision performance during airbag calibration, reduces the cost that instrument desk makes.

Accompanying drawing explanation

Fig. 1 represents the Making programme figure of existing instrument desk exemplar;

Fig. 2 represents the preparation method flow chart of embodiment 1 instrument desk rapid shaping exemplar;

Fig. 3 represents the preparation method flow chart of embodiment 2 instrument desk rapid shaping exemplar;

Fig. 4 represents the preparation method flow chart of embodiment 3 instrument desk rapid shaping exemplar.

Detailed description of the invention

Be described in detail to structure of the present invention and principle below in conjunction with accompanying drawing, illustrated embodiment, only for explaining the present invention, not limits protection scope of the present invention with this.

As shown in Figure 1, a kind of rapid shaping instrument desk exemplar preparation method for airbag calibration, comprises the following steps the Making programme of existing instrument desk exemplar:

Step 1: data analysis, analyzes the three-dimensional digital-to-analogue of product, splits into the module of machining, and derive the data of Digit Control Machine Tool;

Step 2: (CNC is the abbreviation of computer digital control machine tool (Computer numericalcontrol), is a kind of by programme controlled automated machine tool to make CNC part.This control system can logically process has control coding or other symbolic instruction regulated procedures, by computer by its decoding, thus the action that lathe has been put rules into practice, by Tool in Cutting, blank material is processed into semi-finished product fabricated part), Digit Control Machine Tool is ABS plate (acrylonitrile/butadiene/styrene copolymer plate.English name Acrylonitrile-butdiene-styrene) splicing block of each shape is milled out according to data, then each part is spliced into instrument desk, and completes CNC through hand finish and make;

Step 3: silica gel mould makes;

Silica gel mould technological process is specific as follows:

Standby → framed making of female calibration → fixing female sample → preparation silica gel → silica gel vacuumizes → and silica gel perfusion → mould vacuumizes → mold cured → die sinking → complete.This process is prior art, and detailed process repeats no more.

Step 4: the making of rapid shaping instrument desk exemplar;

More accurately also repaired by hand will be carried out to shaping exemplar in order to make mould.

The step more than making instrument desk exemplar is all prior aries, does not repeat them here.

As shown in Figure 2, embodiment 1: the step that the exemplar of rapid shaping described in the present embodiment makes comprises following sub-step:

Step 41: under room temperature, polyol liquid and isocyanates liquid are mixed according to the weight ratio of 1:2, incorporation time is 10 minutes; In the present embodiment, described room temperature is 25 degree.

In order to avoid shaping exemplar can not to meet the problem of collision performance because of oxidation, so that affect the process of whole test and the expense of test, incorporation time also can be less than 10 minutes, but can not more than 10 minutes.

Step 42: step 41 gained mixed liquor is injected the mould vacuumized;

Mould is first put into baking oven, is vacuumized before injecting mould by described mixed liquor.

In order to ensure the performance of shaping exemplar, in the present embodiment, under the environmental condition identical with environmental condition when carrying out step 41 (under the environmental condition of 25 degree), step 41 gained mixed liquor is injected the mould vacuumized.

Step 43: by the mold heated solidification after described step 42, keep mold temperature to be 60 DEG C, the time of being heating and curing is 8 minutes ~ 10 minutes.

As shown in Figure 3, embodiment 2: the step that the exemplar of rapid shaping described in the present embodiment makes comprises following sub-step:

In the present embodiment, described room temperature is 35 degree.

Step 41: under room temperature, polyol liquid and isocyanates liquid are mixed according to the weight ratio of 1:2, incorporation time is 6.5 minutes;

In order to avoid shaping exemplar can not to meet the problem of collision performance because of oxidation, so that affect the process of whole test and the expense of test, incorporation time also can be less than 6.5 minutes, but can not more than 6.5 minutes.

Step 42: step 41 gained mixed liquor is injected the mould vacuumized;

In order to ensure the performance of shaping exemplar, in the present embodiment, under the environmental condition identical with environmental condition when carrying out step 41 (under the environmental condition of 35 degree), step 41 gained mixed liquor is injected the mould vacuumized.

Step 43: by the mold heated solidification after described step 42, keep mold temperature to be 60 DEG C, the time of being heating and curing is 8 minutes ~ 10 minutes.

As shown in Figure 4, embodiment 3: the step that the exemplar of rapid shaping described in the present embodiment makes comprises following sub-step:

In the present embodiment, described room temperature is 30 degree.

Step 41: under room temperature, polyol liquid and isocyanates liquid are mixed according to the weight ratio of 1:2, incorporation time is 8 minutes;

In order to avoid shaping exemplar can not to meet the problem of collision performance because of oxidation, so that affect the process of whole test and the expense of test, incorporation time also can be less than 8 minutes, but can not more than 8 minutes.

Step 42: step 41 gained mixed liquor is injected the mould vacuumized;

In order to ensure the performance of shaping exemplar, in the present embodiment, under the environmental condition identical with environmental condition when carrying out step 41 (under the environmental condition of 30 degree), step 41 gained mixed liquor is injected the mould vacuumized.

Step 43: by the mold heated solidification after described step 42, keep mold temperature to be 60 DEG C, the time of being heating and curing is 8 minutes ~ 10 minutes.

In this example, described polyol liquid is viscosity is 1000mPa, proportion (the dry completely closely knit weight of material and 4 DEG C time same volume pure water the ratio of weight, be called the proportion of this material) be 1.11 milky white liquid.

The viscosity that described isocyanates liquid is is 3000mPa, and proportion is the milky white liquid of 1.17.

The preparation method of rapid shaping instrument desk exemplar of the present invention is adopted to make instrument desk exemplar, can meet for collision performance during airbag calibration, the product of rapid shaping is utilized to carry out final assembly and various test, information interchange is carried out at any time with mold center, strive accomplishing that mould is disposable by checking and accepting, the test evaluation concurrent working of such Making mold and complete machine, accelerates the development progress of product greatly, completes rapidly instrument desk from the conversion being designed into operation.

In addition, the exemplar adopting preparation method of the present invention to be formed has obvious directive function for the design and manufaction process of mould.For specific product, the instrument desk Making mold time can shorten greatly, and the quality of instrument desk Making mold can be improved, and obtains final guarantee accordingly serve active influence to product quality.Designer constantly can improve design when designing, and optimizes structure.

The demarcation of air bag is higher for instrument physical property requirements, the impact test that can complete regulation, to gather relevant data.And the rapid shaping instrument desk exemplar after improvement has met national standard requirement in partial properties, and the calibration experiment that these performances also can complete instrument sees the following form:

The above is present pre-ferred embodiments, it should be pointed out that to those skilled in the art, and not departing under principle prerequisite of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as scope.

Claims (4)

1., for a rapid shaping instrument desk exemplar preparation method for airbag calibration, comprise the following steps:

Step 1: the three-dimensional digital-to-analogue of product is analyzed, splits into the module of machining, and derive the data of Digit Control Machine Tool;

Step 2: Digit Control Machine Tool mills out ABS buttress the splicing block of each shape according to data, then each part is spliced into instrument desk, and complete CNC making through hand finish;

Step 3: silica gel mould makes;

Step 4: rapid shaping exemplar makes;

It is characterized in that, in described step 4, specifically comprise following sub-step:

Step 41: under room temperature, mixes polyol liquid and isocyanates liquid according to the weight ratio of 1:2, and incorporation time is 6.5 minutes ~ 10 minutes;

Step 42: step 41 gained mixed liquor is injected the mould vacuumized;

Step 43: by the mold heated solidification after described step 42, keep mold temperature to be 60 DEG C, the time of being heating and curing is 8 ~ 10 minutes;

Described polyol liquid is viscosity is 1000mPa, proportion be 1.11 milky white liquid;

The viscosity that described isocyanates liquid is is 3000mPa, proportion is the milky white liquid of 1.17.

2. the rapid shaping instrument desk exemplar preparation method for airbag calibration according to claim 1, is characterized in that, in described step 41, the incorporation time of described mixed liquor under the environment of 25 DEG C is 10 minutes.

3. the rapid shaping instrument desk exemplar preparation method for airbag calibration according to claim 1, is characterized in that, in described step 41, the incorporation time of described mixed liquor under the environment of 35 DEG C is 6.5 minutes.

4. the rapid shaping instrument desk exemplar preparation method for airbag calibration according to claim 1, it is characterized in that, in described step 42, under the environmental condition identical with environmental condition when carrying out step 41, step 41 gained mixed liquor is injected the mould vacuumized.