常州亿创钣金加工厂专业从事精密钣金加工、激光切割加工为主的钣金加工型厂家

常州亿创钣金加工厂

示例图片三
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钣金机箱加工时钣金件拆卸方法

2018-06-07 10:52:08 常州亿创钣金加工厂 阅读

1、下料:

①剪床:是利用剪床剪切条料简单料件,它主要是为模具落料成形准备加工,成本低,精度低于0.2,但只能加工无孔无切角的条料或块料。

②冲床:是利用冲床分一步或多步在五金板材上将零件展开后的平板件冲裁成形各种形状料件,其优点是耗费工时短,效率高,精度高,成本低,适用大批量生产,但要设计模具。

利用模具成形的加工工序,一般冲床加工的有冲孔、切角、落料、冲凸包(凸点),冲撕裂、抽孔、成形等加工方式,其加工需要有相应的模具来完成操作,如冲孔落料模、凸包模、撕裂模、抽孔模、成型模等,操作主要注意位置,方向性。

2.钳工:沉孔、攻丝、扩孔、钻孔--沉孔角度一般120℃,用于拉铆钉,90℃用于沉头螺钉,攻丝英制底孔。

3.翻边:又叫抽孔、翻孔,就是在一个较小的基孔上抽成一个稍大的孔,再攻丝,主要用板厚比较薄的钣金加工,增加其强度和螺纹圈数,避免滑牙,一般用于板厚比较薄,其孔周正常的浅翻边,厚度基本没有变化,允许有厚度的变薄30-40%时,可得到比正常翻边高度大高40-60%的高度,用挤薄50%时,可得最大的翻边高度,当板厚较大时,如2.0、2.5等以上的板厚,便可直接攻丝。

4.压铆:主要有压铆螺母、螺钉、松不脱等,其是通过液压压铆机或冲床来完成操作,将其铆接到五金件上,还有涨铆方式,需注意方向性。

5.折弯:折弯就是将2D的平板件,折成3D的零件。其加工需要有折床及相应折弯模具完成,它也有一定折弯顺序,其原则是对下一刀不产生干涉的先折,会产生干涉的后折。一般情况下先压铆后折弯,但有料件压铆后会干涉就要先折后压,又有些需折弯—压铆—再折弯等工序。

6.焊接:焊接分为a熔化焊:氩弧焊、CO2焊、气体焊、手工焊;b压力焊:点焊、对焊、撞焊;c钎焊:电铬焊、铜丝等方式。

(1) shearing machine: it is a simple material for cutting the strip by cutting the cutting bed. It is mainly prepared for the molding of die blanking. The cost is low and the precision is less than 0.2, but it can only process the strip without hole and no cutting angle.

(2) punching machine: it is a kind of shape material that can be formed by punching the parts of the plate with one or more steps in the metal plate. The advantages of the blanking are short time, high efficiency, high precision, low cost, and suitable for mass production, but the mold should be designed.

Using die forming process, the general punching machine has punching holes, cutting corners, blanking, punching bulge (Bump), punching and tearing, drawing holes, forming and other processing methods. The processing needs corresponding moulds to complete the operation, such as punching die, punch die, tearing die, Kong Mo, molding die and so on. The operation mainly pays attention to the position. Directionality.

2. fitter: hole sinking, tapping, reaming and drilling. The depth of hole is 120 degrees, which is used for pulling rivets, 90 degrees for countersunk screws, and for British bottom holes.

3. flanging: also called hole and hole, that is to draw a slightly larger hole on a smaller base hole, and then tapping, mainly using sheet metal processing with thin plate thickness, increasing its strength and number of threads to avoid sliding teeth, generally used for thin plate thickness, the shallow flanging of the hole Zhou Zhengchang, the thickness is basically unchanged, allowing thickness. When the 30-40% is thinner, the height of 40-60% higher than the normal flanging height can be obtained. The maximum flanging height can be obtained when it is thinned by 50%. When the thickness of the plate is larger, the thickness of the plate, such as 2, 2.5 and so on, can be tapped directly.

4. pressure riveting: the main pressure rivet nut, screw, loose and so on, it is through the hydraulic pressure riveting machine or punch to complete the operation, it is riveted to the hardware, there is also a rise in riveting, to pay attention to the direction of the direction.

5. bending: bending is to turn the flat parts of 2D into 3D parts. Its processing requires a folding bed and a corresponding bending die. It also has a certain bending order. The principle is that the next knife does not interfere with the first fold, resulting in a back break of interference. In general, press and rivet after bending. However, after pressing and riveting, the material must be folded and pressed, and some bending, pressing, riveting and bending are needed.

6. welding: welding is divided into a melting welding: argon arc welding, CO2 welding, gas welding, manual welding; B pressure welding: spot welding, butt welding, collision welding; C brazing: Electric chromium welding, copper wire and so on.


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