Automobile testing fixture blank formed by carbon fibers, testing fixture and manufacturing method of automobile testing fixture blank

Abstract

According to the automobile testing fixture blank formed by utilizing the carbon fibers, the testing fixture and the manufacturing method of the automobile testing fixture blank, due to the fact that the embedded part is arranged in the sandwich, when the automobile testing fixture blank is used for manufacturing the automobile testing fixture in the later period, an installation interface of the automobile testing fixture can be machined in the embedded part, and the installation interface is convenient to assemble and disassemble. The embedded part can be made of metal materials and has good machining performance and abrasion resistance, so that a mounting interface can be conveniently machined on the embedded part, the product percent of pass is high, and the embedded part can be repeatedly mounted and used to keep good mounting precision.

Description

Technical Field

[0001] The invention relates to an automobile inspection tool blank formed by carbon fiber, the inspection tool and a manufacturing method thereof. Background Art

[0002] In the field of automobile production, the precision requirements of automobile parts are relatively high. There are many parts involved in the automobile, and the appearance and installation dimensions of these parts need to be inspected. Automobile inspection fixtures are important inspection fixtures used in the automobile industry to inspect whether automobile parts are qualified. Automobile inspection fixtures are processed into high-precision standard parts with the same relevant dimensions as real parts, and are used to detect whether the relevant installation dimensions on the matching parts are qualified. For example, large-sized gauges such as door gauges, engine hood gauges, and trunk lid gauges need to be made into the same installation structure and interface size as the real parts. These gauges are large in size. If they are made of aluminum alloy, they will be heavy and very laborious to install and use. Therefore, lightweight materials can be used to make gauges. In the prior art, there is a practice of using lightweight materials such as carbon fiber coated foam materials to make gauge models. For example, the invention patent application with Chinese application number CN2019100017715 discloses a method of using carbon fiber coated foam materials as automobile gauges. However, this gauge requires processing an installation interface on the carbon fiber model to install an insert so as to connect it to the main model gauge of the automobile. Since carbon fiber is a non-metallic material, its machinability is poor, and the machinability and strength of the coated foam material are not high. Therefore, it is difficult to process the connection interface of the insert on the gauge model, which is easy to produce waste and increases the manufacturing cost of large-sized gauges such as automobile doors. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide an automobile inspection tool blank, an inspection tool and a manufacturing method thereof formed by using carbon fiber, so that the manufactured automobile inspection tool has good machinability and improves the product qualification rate.

[0004] To achieve the above-mentioned purpose, the present invention provides an automobile inspection fixture blank formed by carbon fiber, comprising a core, an embedded part and a carbon fiber layer, the core is provided with a mounting groove, the embedded part is installed in the mounting groove, the carbon fiber layer is coated on the outside of the core and the embedded part, and the carbon fiber layer and the core are cast into an integral structure by resin impregnation.

[0005] Preferably, the embedded part is bonded in the installation groove by an adhesive.

[0006] Preferably, the bottom space of the installation groove is larger than the mouth space thereof.

[0007] More preferably, the mounting groove is an inverted T-shaped groove or a dovetail groove.

[0008] Preferably, the sandwich core is formed by splicing a plurality of sandwich core blocks.

[0009] More preferably, the sandwich blocks are bonded together by adhesive.

[0010] Preferably, the sandwich block is made of foam material.

[0011] Preferably, the embedded part is made of aluminum or steel.

[0012] Corresponding to the automobile inspection tool blank formed by carbon fiber of the present invention, the present invention also provides a method for manufacturing the automobile inspection tool blank, comprising the following steps:

[0013] 1) Using foam material to process a sandwich in the shape of an automobile inspection fixture, and setting a mounting groove for installing embedded parts on the sandwich, and installing the embedded parts in the mounting groove;

[0014] 2) Laying the release cloth and the lower carbon fiber cloth on the mold cavity surface of the single-sided mold in sequence;

[0015] 3) placing the sandwich core prefabricated in step 1) into the mold cavity above the lower carbon fiber cloth;

[0016] 4) sequentially covering the sandwich with an upper carbon fiber cloth, a guide cloth and a vacuum bag film, wherein the upper carbon fiber cloth and the lower carbon fiber cloth wrap the sandwich;

[0017] 5) Sealing the vacuum bag film to the edge of the single-sided mold to form a sealed environment between the vacuum bag film and the mold cavity;

[0018] 6) Evacuate the sealing environment between the vacuum bag film and the mold cavity;

[0019] 7) Inject resin material into the sealed environment between the vacuum bag film and the mold cavity, so that the resin material infiltrates all contact surfaces between the carbon fiber cloth and the sandwich core and embedded parts;

[0020] 8) After the resin material is cured, the resin material consolidates the upper carbon fiber cloth, the lower carbon fiber cloth and the sandwich into a gauge blank, and the upper carbon fiber cloth and the lower carbon fiber cloth constitute a carbon fiber layer;

[0021] 9) Remove the vacuum bag film and guide cloth, and take out the inspection tool blank.

[0022] Corresponding to the automobile inspection fixture blank formed by carbon fiber of the present invention, the present invention also provides an automobile inspection fixture, which is made of the automobile inspection fixture blank described in the above technical solution, the carbon fiber layer outside the embedded part is partially removed, and the embedded part is processed with a mounting interface.

[0023] As described above, the present invention relates to an automobile inspection fixture blank, inspection fixture and manufacturing method thereof formed by carbon fiber, which have the following beneficial effects: in the automobile inspection fixture blank formed by carbon fiber of the present invention, since embedded parts are set in the sandwich, when the automobile inspection fixture blank is used to manufacture the automobile inspection fixture in the later stage, the installation interface of the automobile inspection fixture can be processed on the embedded parts, and the embedded parts can be made of metal materials with good processing performance and wear resistance. In this way, the installation interface can be conveniently processed on the embedded parts, the product qualification rate is high, and it can be repeatedly installed and used to maintain good installation accuracy. The automobile inspection fixture and the manufacturing method of the inspection fixture blank of the present invention certainly also have the above beneficial effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Shown is a schematic diagram of the three-dimensional structure of an automobile inspection fixture of the present invention.

[0025] Figure 2 Shown is a top view of an automobile inspection fixture of the present invention.

[0026] Figure 3 Shown is a cross-sectional view of an automobile inspection fixture of the present invention.

[0027] Figure 4 for Figure 3 Magnified view at F in the middle.

[0028] Figure 5 It shows a schematic diagram of the die assembly for manufacturing a blank of an automobile inspection fixture of the present invention.

[0029] Component number description

[0030] 1Automobile inspection fixture

[0031] 2 Embedded parts

[0032] 3 Sandwich

[0033] 4 Sandwich Blocks

[0034] 5 Mounting slots

[0035] 6 carbon fiber layers

[0036] 7 Mould

[0037] 8 mold cavities

[0038] 9 Release cloth

[0039] 10 Lower layer of carbon fiber cloth

[0040] 11 Upper carbon fiber cloth

[0041] 12. Guide cloth

[0042] 13 Vacuum bag film

[0043] 14 Sealing strip DETAILED DESCRIPTION

[0044] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0045] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0046] like Figures 1 to 3 The schematic diagram of the automobile inspection fixture 1 manufactured by using the carbon fiber molded automobile inspection fixture 1 blank of the present invention is shown. The automobile inspection fixture 1 blank is manufactured by processing the surface of the fiber molded automobile inspection fixture 1 blank to obtain a certain amount of the surface of the fiber molded automobile inspection fixture 1 blank, and then processing the installation interface at the embedded part 2. Figures 1 to 3 The automobile inspection fixture 1 shown. To illustrate the carbon fiber molded automobile inspection fixture 1 blank of the present invention, reference can be made to Figures 1 to 3 For illustration, the present invention provides a blank of an automobile inspection fixture 1 formed by using carbon fiber, comprising a core 3, an embedded part 2 and a carbon fiber layer 6, wherein the core 3 is provided with a mounting groove 5, the embedded part 2 is installed in the mounting groove 5, the carbon fiber layer 6 is coated on the outside of the core 3 and the embedded part 2, and the carbon fiber layer 6 and the core 3 are cast into an integral structure by resin impregnation.

[0047] In the blank of the automobile inspection fixture 1 formed by carbon fiber of the present invention, since the embedded part 2 is set in the sandwich 3, when the automobile inspection fixture 1 is manufactured by the automobile inspection fixture 1 blank in the later stage, the installation interface of the automobile inspection fixture 1 can be processed on the embedded part 2, and the embedded part 2 can be made of metal material with good processing performance and wear resistance. In this way, the installation interface can be conveniently processed on the embedded part 2, and the product qualification rate is high. Since the embedded part 2 is made of metal materials such as aluminum or steel, it has good wear resistance. The positioning surface and the positioning hole on the installation interface processed in the future are not easy to wear, and can be repeatedly installed and used to maintain good installation accuracy and connection strength.

[0048] The embedded part 2 is pre-installed in the sandwich 3, and then cast with the carbon fiber cloth into an integral structure through resin. In order to position the embedded part 2 in the sandwich 3, when the sandwich 3 is formed, the installation groove 5 is processed on the sandwich 3 by cutting to position and install the embedded part 2. The sandwich 3 can generally be made of lightweight materials such as foam materials. The foam blank is placed on a CNC machine tool, and the foam blank is processed into the shape of the required automobile inspection fixture 1 to become a sandwich 3 or a sandwich block 4. Because the carbon fiber layer 6 will be coated on the outside of the sandwich 3 in the future, the outer dimensions of the sandwich 3 need to be reduced to a certain extent, leaving room for coating the carbon fiber layer 6 and later processing. In order to make the embedded part 2 and the sandwich 3 firmly fixed, the embedded part 2 is bonded in the installation groove 5 by an adhesive. The embedded part 2 can be bonded by applying 3M strong industrial glue in the installation groove 5, or the embedded part 2 can be cast and solidified in the installation groove 5 by resin. In this way, the embedded part 2 is firmly connected to the installation groove 5. When the automobile inspection fixture 1 is installed and disassembled later, the embedded part 2 is not easy to fall off from the installation groove 5 or loosen and shift, which reduces the accuracy of the automobile inspection fixture 1. In addition, the embedded part 2 can be coated with carbon fiber cloth, and after the carbon fiber cloth and the embedded part 2 are cast with resin together, the embedded part 2 coated with carbon fiber cloth is placed in the installation groove 5, and then the embedded part 2 coated with carbon fiber cloth is bonded in the installation groove 5 by strong glue or resin. In this way, since the carbon fiber cloth can be well bonded with the foam material, the bonding strength between the embedded part 2 and the sandwich 3 is high.

[0049] In order to make the embedded part 2 firmly connected to the mounting groove 5 and able to withstand a large load without falling off or shifting from the mounting groove 5, the bottom space of the mounting groove 5 is larger than the mouth space. In this way, due to the size limitation of the mouth of the mounting groove 5, the embedded part 2 cannot fall off or move from the mouth. As a preferred embodiment, Figure 3 As shown, the installation groove 5 is an inverted T-shaped groove. The installation groove 5 can also be set as a dovetail groove or other structural forms, as long as the size of its mouth is smaller than its bottom size to limit the separation or movement of the embedded part 2. Because the bottom size of the installation groove 5 is larger than the size of the mouth, in order to facilitate the installation of the embedded part 2, the sandwich 3 can be manufactured by splicing, such as Figure 3 As shown, the sandwich 3 is formed by splicing a plurality of sandwich blocks 4, which are made of foam material, and a half structure of the installation groove 5 is processed on each sandwich block 4. In this way, when installing the embedded part 2, the embedded part 2 is first inserted into the half structure of the installation groove 5 on the sandwich block 4, and then the sandwich block 4 is spliced ​​to complete the installation and splicing of the embedded part 2 and the sandwich block 4. In order to make the sandwich blocks 4 firmly connected and improve the overall strength of the automobile inspection fixture 1, the sandwich blocks 4 are bonded together by adhesive.

[0050] The blank of the automobile gauge 1 formed by using carbon fiber of the present invention can be a gauge blank of various larger sizes, such as a door gauge, an engine cover gauge, a trunk gauge, and other large-size gauge blanks.

[0051] Corresponding to the automobile inspection fixture 1 blank formed by carbon fiber of the present invention, the present invention also provides a method for manufacturing the automobile inspection fixture 1 blank. For ease of description, please refer to Figure 5 The present invention provides a method for manufacturing a blank of an automobile inspection fixture 1, comprising the following steps:

[0052] 1) A core 3 in the shape of an automobile inspection fixture 1 is processed using a foam material, and a mounting groove 5 for mounting the embedded part 2 is provided on the core 3, and the embedded part 2 is installed in the mounting groove 5;

[0053] 2) Laying a release cloth 9 and a lower carbon fiber cloth 10 on the surface of the mold cavity 8 of the single-sided mold 7 in sequence;

[0054] 3) placing the sandwich core 3 prefabricated in step 1) into the mold cavity 8 above the lower carbon fiber cloth 10;

[0055] 4) The upper carbon fiber cloth 11, the guide cloth 12 and the vacuum bag film 13 are sequentially covered on the sandwich core 3, and the upper carbon fiber cloth 11 and the lower carbon fiber cloth 10 wrap the sandwich core 3;

[0056] 5) The vacuum bag film 13 is sealed to the edge of the single-sided mold 7 by a sealing strip 14 so that a sealed environment is formed between the vacuum bag film 13 and the mold cavity 8;

[0057] 6) Evacuate the sealing environment between the vacuum bag film 13 and the mold cavity 8;

[0058] 7) Injecting resin material into the sealed environment between the vacuum bag film 13 and the mold cavity 8, so that the resin material infiltrates all contact surfaces between the carbon fiber cloth and the sandwich core 3 and the embedded parts 2;

[0059] 8) After the resin material is cured, the resin material consolidates the upper carbon fiber cloth 11, the lower carbon fiber cloth 10 and the sandwich 3 into a gauge blank, and the upper carbon fiber cloth 11 and the lower carbon fiber cloth 10 constitute the carbon fiber layer 6;

[0060] 9) Remove the vacuum bag film 13 and the guide cloth 12, and take out the inspection tool blank.

[0061] After the gauge blank is taken out, it is processed according to the gauge size. On the one hand, the shape and structure size of the processed automobile gauge 1 meet the requirements. On the other hand, the embedded part 2 is processed, the carbon fiber layer 6 at the embedded part 2 is removed, and an installation interface for positioning and connecting with the main automobile gauge is processed on the embedded part 2; and then the surface of the automobile gauge 1 is spray-painted to make it have better surface properties.

[0062] The method for manufacturing a blank of an automobile inspection fixture 1 of the present invention can be used to manufacture various inspection fixtures of larger sizes, such as door inspection fixtures, engine cover inspection fixtures, trunk inspection fixtures, etc.

[0063] Corresponding to the automobile inspection fixture 1 blank formed by carbon fiber of the present invention, the present invention also provides an automobile inspection fixture 1, which is made of the automobile inspection fixture 1 blank described in the above technical solution, and the carbon fiber layer 6 on the outside of the embedded part 2 is partially removed, and an installation interface is processed on the embedded part 2. Because the specific structure of the installation interface is diverse, it can be a connection structure such as a bolt hole and a slot, which is not shown in detail in the drawings and will not be described in detail here.

[0064] In order to make the carbon fiber layer 6 fully cover the sandwich core 3 and prevent the foam material of the sandwich core 3 from being exposed and worn, please refer to Figure 4 , a cut is made on the carbon fiber layer 6 at the embedded part 2 where the installation interface needs to be processed, and part of the carbon fiber layer 6 at the embedded part 2 is removed, so that the part of the embedded part 2 where the installation interface needs to be processed is exposed, the edge of the embedded part 2 is still covered by the carbon fiber layer 6, and the joint between the embedded part 2 and the sandwich 3 is covered by the carbon fiber layer 6, so that the carbon fiber layer 6 can fully cover the sandwich 3 and the sandwich 3 will not be exposed. In order to prevent the cut edge of the carbon fiber layer 6 from warping, a strong glue can be applied to the cut edge of the carbon fiber layer 6 so that the cut edge of the carbon fiber layer 6 is firmly bonded to the embedded part 2.

[0065] Based on the technical solution of the above embodiment, the automobile inspection fixture 1 blank formed by carbon fiber of the present invention is light in weight, the manufactured automobile inspection fixture 1 is easy to install and disassemble, has good processability, has a high product qualification rate of the manufactured automobile inspection fixture 1, and can be repeatedly installed and used to maintain good installation accuracy. Moreover, carbon fiber and foam material are used as the main materials for manufacturing the inspection fixture, and the cost is low. The automobile inspection fixture 1 and the manufacturing method of the inspection fixture blank of the present invention certainly also have the above-mentioned beneficial effects, which will not be repeated here.

[0066] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0067] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A blank of an automobile inspection tool molded by carbon fiber, characterized in that: It includes a sandwich core, an embedded part and a carbon fiber layer. The sandwich core is provided with a mounting groove, the embedded part is installed in the mounting groove, the carbon fiber layer is coated on the outside of the sandwich core and the embedded part, and the carbon fiber layer and the sandwich core are cast into an integral structure through resin impregnation.

2. The automobile inspection tool blank formed by carbon fiber according to claim 1 is characterized in that: The embedded part is bonded in the installation groove by adhesive.

3. The automobile inspection tool blank formed by carbon fiber according to claim 1 is characterized in that: The bottom space of the installation groove is larger than the mouth space thereof.

4. The automobile inspection tool blank formed by carbon fiber according to claim 3 is characterized in that: The mounting groove is an inverted T-shaped groove or a dovetail groove.

5. The automobile inspection tool blank formed by carbon fiber according to claim 3 is characterized in that: The sandwich core is formed by splicing a plurality of sandwich core blocks.

6. The automobile inspection tool blank formed by carbon fiber according to claim 5 is characterized in that: The sandwich blocks are bonded together by adhesive.

7. The automobile inspection tool blank formed by carbon fiber according to claim 1 is characterized in that: The sandwich block is made of foam material.

8. The automobile inspection tool blank formed by carbon fiber according to claim 1 is characterized in that: The embedded parts are made of aluminum or steel.

9. A method for manufacturing a blank of an automobile inspection fixture, comprising the following steps: 1) Using foam material to process a sandwich in the shape of an automobile inspection fixture, and setting a mounting groove for installing embedded parts on the sandwich, and installing the embedded parts in the mounting groove; 2) Laying the release cloth and the lower carbon fiber cloth on the mold cavity surface of the single-sided mold in sequence; 3) placing the sandwich core prefabricated in step 1) into the mold cavity above the lower carbon fiber cloth; 4) sequentially covering the sandwich with an upper carbon fiber cloth, a guide cloth and a vacuum bag film, wherein the upper carbon fiber cloth and the lower carbon fiber cloth wrap the sandwich; 5) Sealing the vacuum bag film to the edge of the single-sided mold to form a sealed environment between the vacuum bag film and the mold cavity; 6) Evacuate the sealing environment between the vacuum bag film and the mold cavity; 7) Inject resin material into the sealed environment between the vacuum bag film and the mold cavity, so that the resin material infiltrates all contact surfaces between the carbon fiber cloth and the sandwich core and embedded parts; 8) After the resin material is cured, the resin material consolidates the upper carbon fiber cloth, the lower carbon fiber cloth and the sandwich into a gauge blank, and the upper carbon fiber cloth and the lower carbon fiber cloth constitute a carbon fiber layer; 9) Remove the vacuum bag film and guide cloth, and take out the inspection tool blank.

10. An automobile inspection tool molded by carbon fiber, characterized in that: The automobile inspection fixture blank according to claim 1 is used for manufacturing, the carbon fiber layer outside the embedded part is partially removed, and a mounting interface is processed on the embedded part.

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