WO2018137297A1 - 复合板材盲孔加工方法、复合板材及壳体 - Google Patents

复合板材盲孔加工方法、复合板材及壳体 Download PDF

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Publication number
WO2018137297A1
WO2018137297A1 PCT/CN2017/084946 CN2017084946W WO2018137297A1 WO 2018137297 A1 WO2018137297 A1 WO 2018137297A1 CN 2017084946 W CN2017084946 W CN 2017084946W WO 2018137297 A1 WO2018137297 A1 WO 2018137297A1
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Prior art keywords
substrate
hole
composite sheet
blind hole
blind
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PCT/CN2017/084946
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English (en)
French (fr)
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罗建红
郭文平
郭阳
薛康乐
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华为技术有限公司
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Priority to CN201780084025.6A priority Critical patent/CN110191798A/zh
Publication of WO2018137297A1 publication Critical patent/WO2018137297A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic

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  • the invention relates to the technical field of plate manufacturing, in particular to a method for processing a blind hole of a composite plate, a composite plate and a casing.
  • Composite sheets are a new class of materials with good properties that can combine the advantages of different materials to achieve functions that cannot be achieved with a single material.
  • stainless steel/aluminum alloy composite sheets as an example, stainless steel materials have the advantages of high strength, and aluminum alloys have the advantages of good thermal conductivity.
  • the combination of the two types of sheets can combine the advantages of high strength and good thermal conductivity, and has more advantages than a single material. Application scenario.
  • the processing of blind holes for composite sheets is mainly processed by CNC machine tools (CNC).
  • CNC machine tools CNC machine tools
  • the processing takes a long time and the processing cost is high, and the advantages of composite sheets in the initial production are not fully utilized.
  • CNC CNC machine tools
  • the embodiment of the invention provides a blind hole processing method for composite plates, which solves the technical problem of high processing cost of the existing composite plate blind holes.
  • the method for processing a blind hole of a composite sheet, the composite sheet comprising a first substrate and a second substrate comprising: punching a hole in the first substrate to form a through hole; forming a first substrate forming the through hole
  • the second substrate is bonded to form a composite sheet having blind holes.
  • the step of punching a through hole on the first substrate includes:
  • the blank is placed and fixed in the through hole.
  • the step of bonding the first substrate forming the through hole and the second substrate to form the composite plate having the blind hole comprises: removing the blanking of the through hole, and removing the first substrate of the blanking Rolling is performed with the second substrate.
  • the blanking material and the through hole are fixed by an anti-adhesive.
  • the bonding manner of the first substrate forming the through hole and the second substrate to form the composite plate having the blind hole includes a rolling method, an explosion method or a welding method.
  • the first substrate and the second substrate are made of a metal material, and the hardness of the first substrate is smaller than the hardness of the second substrate.
  • the first substrate is an aluminum alloy layer; and the second substrate is a stainless steel layer.
  • the steps of forming a CNC milling machine for forming a composite sheet having blind holes are also included.
  • it also includes the steps of surface treatment and residue cleaning of the composite sheet after the CNC milling machine is processed.
  • the method further comprises the step of confirming the dimensional relationship between the size of the blind hole forming the composite plate having the blind hole and the size of the through hole obtained by the punching.
  • the composite board according to the present application comprises a first substrate and a second substrate bonded to the first substrate, and a blind hole formed on the first substrate formed by the blind hole processing method of the composite sheet.
  • the housing described in the present application is made of the composite sheet material having blind holes.
  • the blind hole processing method of the composite plate described in the present application rough-processes the plate into a through-hole by the punching method, and can realize rapid blind hole processing, and at the same time reduce the machining cutting amount of the subsequent CNC machine tool, and can realize the target High efficiency and low cost requirements for mass production.
  • FIG. 1 is a schematic view showing the processing flow of a method for processing a blind sheet of a composite sheet according to the present invention, which comprises processing a substrate and an apparatus.
  • FIG. 2 is a flow chart of the blind hole processing method of the composite sheet shown in FIG.
  • FIG. 3 is a flow chart of a further method of the blind sheet processing method of the composite sheet shown in FIG. 2.
  • FIG. 4 is a schematic view showing the processing flow of a further method for the blind hole processing method of the composite sheet shown in FIG. 3, which includes the processed substrate and equipment.
  • the invention provides a method for processing a blind hole of a composite sheet and a composite sheet, and a blind hole processing of a composite sheet back shell, a computer composite sheet shell and other composite sheets applied by the composite sheet blind hole processing method.
  • the composite sheet is applied to the production of a casing such as a mobile phone or a computer.
  • the composite board in the embodiment includes a first substrate 10 and a second substrate 12 , and the first substrate 10 and the second substrate 12 are made of a metal material, and the hardness of the first substrate 10 . It is smaller than the hardness of the second substrate 11. Because the plate with low hardness is easier to process the through hole, the efficiency is better, and the through hole of the plate with high hardness requires high hardness and low processing efficiency.
  • the first substrate 10 is an aluminum alloy; and the second substrate 12 is stainless steel.
  • the method for processing a blind hole of a composite sheet includes:
  • step S1 a hole is punched in the first substrate 10 to form a through hole 11.
  • the through hole 11 in this step is formed by using a punching device.
  • step S2 the first substrate 10 forming the through hole 11 and the second substrate 12 are bonded to form a composite plate having the blind holes 13.
  • the manner in which the first substrate 10 forming the through hole 11 and the second substrate 12 are bonded to form a composite plate having the blind holes 13 includes a rolling method, an explosion method, or a welding method.
  • a rolling method is taken as an example, as shown in FIG.
  • the first substrate 10 made of an aluminum alloy is punched; the size of the through hole is set according to the size of the predetermined blind hole and the dimensional relationship of the through hole formed after the deformation after rolling.
  • the first substrate 10 formed with the through holes 11 and the second substrate 12 made of stainless steel are placed in the rolling apparatus 50 and rolled by the drum 51, and the first substrate 10 and the second substrate 12 are The drum 51 of the rolling apparatus is deformed and stretched in the rolling direction, one end of the through hole is closed by the second substrate 12 to form a blind hole 13, and the rolled composite sheet 100 has a blind hole 13 having a larger diameter than the The diameter of the through hole.
  • the step of performing CNC milling (CNC) processing on the composite sheet 100 having the blind holes 13 is further included, and the blind holes are precisely processed.
  • CNC CNC milling
  • the process involved in the method mainly includes the design of punching of the sheet, the punching of the sheet, the rolling of the composite sheet with the hole and the finishing of the blind hole of the composite sheet.
  • the equipment involved is punching equipment, rolling equipment and CNC processing equipment.
  • the step of confirming the dimensional relationship between the size of the blind hole forming the composite plate having the blind hole and the size of the through hole obtained by the punching is further included.
  • the composite sheet is subjected to experimental rolling, and the composite sheet having the blind holes is formed through the above steps S1 and S2.
  • the through hole size of the first substrate and the predetermined blind hole size are according to the sheet material.
  • the fluidity, the amount of deformation, the thickness, the deformation of the hole, etc. are estimated, and then punched.
  • the size of the blind hole of the composite plate with the blind hole is confirmed by the dimensional relationship of the size of the through hole obtained by punching in step S1, so that the blind hole after rolling can be more closely approximated to the required The size of the blind hole.
  • the blind hole processing side of the composite sheet described in the present application rough-processes the sheet into a through-hole by punching, and then performs finishing by selective CNC, and realizes blind hole by using CNC compared with the prior art scheme. Roughing and finishing, punching processing is more efficient than CNC roughing, enabling fast blind hole machining, reducing the amount of machining for subsequent CNC machine tools, lower cost, and enabling high-volume production. Efficiency and low cost requirements.
  • the step S1 of the composite plate blind hole processing method further includes:
  • Step S11 the first substrate 10 is punched for the first time to form the pre-pressure through hole 101, and the blanking material 102 after forming the pre-pressure through hole 101 is obtained;
  • Step S12 the pre-pressed through hole 101 of the first substrate 10 is punched to form the through hole 11, the aperture of the through hole 11 is larger than the aperture of the pre-pressed through hole 101;
  • step S13 the blanking material 102 is placed and fixed in the through hole 11.
  • Step S2 includes, in step S14, removing the blanking of the through hole, and rolling the first substrate and the second substrate from which the blanking is removed.
  • the blanking of the mounting hole in the through hole before rolling can limit the precision of the through hole rolling deformation, and accurately control the shape of the blind hole, thereby further improving the precision of the subsequent finishing.
  • the first substrate 10 made of aluminum alloy is punched for the first time; to form a pre-pressed through hole 101, and the pre-pressed through hole 101 is set according to the size of the through hole obtained, and the size of the through hole is determined according to The size of the blind hole and the size relationship of the through hole formed after the deformation after rolling are set. Then, the pre-pressed through hole 101 of the first substrate 10 is punched and expanded to form the through hole 11 to facilitate the return of the blank 102 obtained by the first punching back to the punching hole. The position is that the blank 102 is placed and fixed in the through hole 11.
  • the first substrate 10 to which the blanking material 102 is fixed and the second substrate 12 made of stainless steel are placed in a rolling apparatus for rolling, and the first substrate 10, the blanking material 102, and the through hole 11 and the second substrate 12 are rolled.
  • the deformation occurs in the rolling direction, and a composite sheet having the blank 102 is formed, and the blank 102 is then removed.
  • the blanking material 102 and the through hole 11 are fixed by an anti-adhesive. That is, the blanking material 102 of the through hole 11 is removed, and the first substrate 10 and the second substrate 12 from which the blanking is removed are rolled to form a composite sheet having blind holes.
  • the post-treatment process is carried out, and the post-treatment can be It can be selectively carried out by including CNC processing, surface treatment, residue cleaning, and the like.
  • CNC processing, surface treatment and residue cleaning steps are based on the working environment. If the control and operation during the rolling process and the environment are very reliable, these steps can be omitted.
  • the process involved in the method mainly includes the design of punching of the sheet, the punching of the sheet, the rolling of the composite sheet with the hole and the finishing of the blind hole of the composite sheet.
  • the equipment involved is punching equipment, rolling equipment and CNC processing equipment.
  • the present application also provides a housing made of the composite sheet material having blind holes; the housing is a casing such as a mobile phone or a computer.
  • the large blind hole in the back casing of the mobile phone is mainly for processing the battery compartment area, and avoids the cost increase caused by milling the battery compartment.

Abstract

一种复合板材盲孔加工方法，所述复合板材包括第一基板（10）和第二基板（12），所述方法包括：在第一基板（10）上冲孔以形成通孔（11）；将形成通孔（11）的第一基板（10）与第二基板（12）进行贴合以形成具有盲孔的复合板材。该方法能够实现快速的盲孔加工，同时减少了后续数控机床的加工切削量，能够实现针对大批量生产的高效率低成本要求。

Description

复合板材盲孔加工方法、复合板材及壳体 技术领域
本发明涉及板材制造技术领域，尤其涉及一种复合板材盲孔加工方法、复合板材及壳体。
背景技术
复合板材是一类新型的具有良好性能的材料，可以结合不同材料的优点，实现单一材料无法实现的功能。以不锈钢/铝合金复合板材为例，不锈钢材料具有高强度的优点，铝合金具有导热性好好的优点，两种板材结合能够得结合高强度和良好导热性的优点，相对于单一材料具备更多的应用场景。
目前针对复合板材盲孔的加工主要采用数控机床(CNC)进行加工，加工耗时长，加工成本高，未能充分利用复合板材的在初期生产中的优势。特别是对批量规模化生产来讲，采用CNC对复合板材进行盲孔加工，切削量大、加工耗时长等造成加工成本高。
发明内容
本发明实施例提供一种复合板材盲孔加工方法，解决现有的复合板材盲孔的加工成本高的技术问题。
所述一种复合板材盲孔加工方法，所述复合板材包括第一基板和第二基板，所述方法包括：在第一基板上冲孔以形成通孔；将形成通孔的第一基板与第二基板进行贴合以形成具有盲孔的复合板材。
其中，所述在第一基板上冲孔形成通孔的步骤包括，
对第一基板进行第一次冲孔以形成预压通孔，并获得形成预压通孔后的落料；
对所述第一基板的预压通孔进行冲孔形成所述通孔，所述通孔的孔径大于所述预压通孔的孔径；
将所述落料放入并固定于所述通孔中。
其中，所述将形成通孔的第一基板与第二基板进行贴合以形成具有盲孔的复合板材步骤包括，将所述通孔的落料去除，对去除所述落料的第一基板与第二基板进行轧制。
其中，所述落料和所述通孔之间通过防粘结剂固定。
其中，所述将形成通孔的第一基板与第二基板进行贴合以形成具有盲孔的复合板材的贴合方式包括轧制法、爆炸法或者焊接法。
其中，所述第一基板与第二基板为金属材料制成，并且所述第一基板的硬度小于第二基板的硬度。
其中，所述第一基板为铝合金层；所述第二基板为不锈钢层。
其中，还包括对形成具有盲孔的复合板材进行数控铣床加工的步骤。
其中，还包括对进行数控铣床加工后的复合板材进行表面处理及残渣清理的步骤。
其中，在步骤在第一基板上冲孔以形成通孔之前，还包括对形成具有盲孔的复合板材的盲孔尺寸与冲孔得到的通孔的尺寸进行尺寸关系确认的步骤。
本申请所述的复合板材，包括第一基板和与第一基板贴合的第二基板及通过所述的复合板材盲孔加工方法形成的设于第一基板的盲孔。
本申请所述的壳体，由所述的具有盲孔的复合板材制成。
本申请所述的复合板材盲孔加工方通过冲孔方法对板材进行粗加工成通孔在进行轧制，能够实现快速的盲孔加工，同时减少了后续数控机床的加工切削量，能够实现针对大批量生产的高效率低成本要求。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明的复合板材盲孔加工方法的加工流程示意图，其中包括了加工基材和设备。
图2是图1所示的复合板材盲孔加工方法流程图。
图3是图2所示的复合板材盲孔加工方法进一步方法的流程图。
图4是图3所示的复合板材盲孔加工方法进一步方法的加工流程示意图，其中包括了加工基材和设备。
具体实施方式
下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述。
本发明提供了一种复合板材盲孔加工方法及复合板材，复合板材盲孔加工方法应用的在手机复合板材后壳、电脑复合板材壳体以及其他复合板材的盲孔加工。所述复合板材应用的在手机、电脑等外壳的制作。
请参阅图1，本实施例中所述复合板材包括第一基板10和第二基板12，所述第一基板10与第二基板12为金属材料制成，并且所述第一基板10的硬度小于第二基板11的硬度。因为硬度低的板材加工通孔更容易，效率更好，硬度高的板材加工通孔对刀具的硬度要求高高，加工效率低。具体的，所述第一基板10为铝合金；所述第二基板12为不锈钢。
请一并参阅图2，所述复合板材盲孔加工方法包括：
步骤S1，在第一基板10上冲孔以形成通孔11。本步骤中的通孔11使用冲孔设备加工形成。
步骤S2，将形成通孔11的第一基板10与第二基板12进行贴合以形成具有盲孔13的复合板材。
具体的，所述将形成通孔11的第一基板10与第二基板12进行贴合以形成具有盲孔13的复合板材的贴合方式包括轧制法、爆炸法或者焊接法。本实施例中以轧制法为例，如图1所示。将为铝合金制成的第一基板10进行冲孔；通孔的尺寸根据预设的盲孔尺寸及轧制后变形后形成的通孔的尺寸关系来设定。然后将形成有通孔11的第一基板10和为不锈钢制成的第二基板12放入轧制设备50通过滚筒51进行轧制，第一基板10与第二基板12在 轧制设备的滚筒51滚动方向上发生变形延展，所述通孔的一端被第二基板12封闭而形成盲孔13，及轧制后的复合板材100具有盲孔13，盲孔的直径大于所述通孔的直径。
上述步骤后，还包括对形成具有盲孔13的复合板材100进行数控铣床(CNC)加工的步骤，对盲孔进行精确加工。
还包括对进行数控铣床加工后的复合板材100进行表面处理及残渣清理的步骤。当然，(CNC)加工、表面处理及残渣清理的步骤是根据工作环境而定，如果轧制过程中控制及操作以及环境非常可靠，可以省略这些步骤。本方法涉及的过程主要包括板材冲孔的设计、对板材的冲孔加工、带有孔的复合板材轧制和复合板材盲孔的精加工。涉及到的设备有冲孔设备、轧制设备以及CNC加工设备。
在步骤S1进行之前，还包括对形成具有盲孔的复合板材的盲孔尺寸与冲孔得到的通孔的尺寸进行尺寸关系确认的步骤。具体的，对复合板材进行实验性轧制，同样是通过上述步骤S1以及步骤S2形成具有盲孔的复合板材，在形成过程中，第一基板的通孔尺寸与预设盲孔尺寸根据板材的流动性，变形量、厚度，孔的变形等进行预估，然后再冲孔。下一步，将该设有盲孔的复合板材的盲孔尺寸与步骤S1通过冲孔得到的通孔的尺寸进行尺寸关系确认，这样可以轧制后的盲孔更大程度上的接近需要的预设的盲孔的尺寸。
本申请所述的复合板材盲孔加工方通过冲孔方法对板材进行粗加工成通孔在进行轧制，后通过选择性的CNC实现精加工，相较于现有技术方案采用CNC实现盲孔的粗加工和精加工，冲孔加工相比CNC粗加工效率更高，能够实现快速的盲孔加工，同时减少了后续数控机床的加工切削量，成本更低，能够实现针对大批量生产的高效率低成本要求。
如图3所示，进一步的，所述复合板材盲孔加工方法步骤S1还包括：
步骤S11，对第一基板10进行第一次冲孔以形成预压通孔101，并获得形成预压通孔101后的落料102；
步骤S12，对所述第一基板10的预压通孔101进行冲孔形成所述通孔11，所述通孔11的孔径大于所述预压通孔101的孔径；
步骤S13，将所述落料102放入并固定于所述通孔11中。
步骤S2包括，步骤S14，将所述通孔的落料去除，对去除所述落料的第一基板与第二基板进行轧制。本方法中，轧制前将通孔内安装孔的落料，能够限定通孔轧制变形的精度，对盲孔形状进行准确控制，进一步提升后续精加工精度。
如图4所示。将为铝合金制成的第一基板10进行第一次冲孔；以形成预压通孔101，预压通孔101根据需要得到的通孔的尺寸来设定，而通孔的尺寸根据预设的盲孔尺寸及轧制后变形后形成的通孔的尺寸关系来设定。然后对所述第一基板10的预压通孔101进行冲孔外扩预压通孔101的尺寸形成所述通孔11，方便将第一次冲孔得到的落料102重新放回冲孔位置，即将所述落料102放入并固定于所述通孔11中。
将固定有落料102的第一基板10和为不锈钢制成的第二基板12放入轧制设备进行轧制，第一基板10、落料102及通孔11与第二基板12在轧制滚动方向上发生变形，并形成具有落料102的复合板材，然后将落料102去除。其中，所述落料102和所述通孔11之间通过防粘结剂固定。也就是说，将所述通孔11的落料102去除，对去除所述落料的第一基板10与第二基板12进行轧制形成具有盲孔的复合板材。最后进行后处理工序，后处理可 以包含CNC加工、表面处理、残渣清理等，可选择性的进行。当然，(CNC)加工、表面处理及残渣清理的步骤是根据工作环境而定，如果轧制过程中控制及操作以及环境非常可靠，可以省略这些步骤。本方法涉及的过程主要包括板材冲孔的设计、对板材的冲孔加工、带有孔的复合板材轧制和复合板材盲孔的精加工。涉及到的设备有冲孔设备、轧制设备以及CNC加工设备。
本申请还提供一种壳体，壳体由所述的具有盲孔的复合板材制成；所述壳体为手机、电脑等外壳。而手机后壳中大面积盲孔主要是为了加工电池仓区域，避免铣削电池仓带来的成本增加。
以上是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (12)

  1. 一种复合板材盲孔加工方法，所述复合板材包括第一基板和第二基板，其特征在于，所述方法包括：在第一基板上冲孔以形成通孔；将形成通孔的第一基板与第二基板进行贴合以形成具有盲孔的复合板材。
  2. 如权利要求1所述的复合板材盲孔加工方法，其特征在于，所述在第一基板上冲孔形成通孔的步骤包括，
    对第一基板进行第一次冲孔以形成预压通孔，并获得形成预压通孔后的落料；
    对所述第一基板的预压通孔进行冲孔形成所述通孔，所述通孔的孔径大于所述预压通孔的孔径；
    将所述落料放入并固定于所述通孔中。
  3. 如权利要求2所述的复合板材盲孔加工方法，其特征在于，所述将形成通孔的第一基板与第二基板进行贴合以形成具有盲孔的复合板材步骤包括，将所述通孔的落料去除，对去除所述落料的第一基板与第二基板进行轧制。
  4. 如权利要求3所述的复合板材盲孔加工方法，其特征在于，所述落料和所述通孔之间通过防粘结剂固定。
  5. 如权利要求3所述的复合板材盲孔加工方法，其特征在于，所述将形成通孔的第一基板与第二基板进行贴合以形成具有盲孔的复合板材的贴合方式包括轧制法、爆炸法或者焊接法。
  6. 如权利要求1-5任一项所述的复合板材盲孔加工方法，其特征在于，所述第一基板与第二基板为金属材料制成，并且所述第一基板的硬度小于第二基板的硬度。
  7. 如权利要求6所述的复合板材盲孔加工方法，其特征在于，所述第一基板为铝合金层；所述第二基板为不锈钢层。
  8. 如权利要求1-5任一项所述的复合板材盲孔加工方法，其特征在于，还包括对形成具有盲孔的复合板材进行数控铣床加工的步骤。
  9. 如权利要求8所述的复合板材盲孔加工方法，其特征在于，还包括对进行数控铣床加工后的复合板材进行表面处理及残渣清理的步骤。
  10. 如权利要求1所述的复合板材盲孔加工方法，其特征在于，在步骤在第一基板上冲孔以形成通孔之前，还包括对形成具有盲孔的复合板材的盲孔尺寸与冲孔得到的通孔的尺寸进行尺寸关系确认的步骤。
  11. 一种复合板材，其特征在于，包括第一基板和与第一基板贴合的第二基板及通过权利要求1-10所述的复合板材盲孔加工方法形成的设于第一基板的盲孔。
  12. 一种壳体，其特征在于，由权利要求11所述的具有盲孔的复合板材制成。
PCT/CN2017/084946 2017-01-25 2017-05-18 复合板材盲孔加工方法、复合板材及壳体 WO2018137297A1 (zh)

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