数控折弯机滑块重复精度是±0.0004英寸,成形精确的角度须采用这样的精度和良好的模具.手控折弯机滑块重复精度为±0.002英寸,而且在采用合适的模具的前提下一般会产生±2~3°的偏差.此外,CNC折弯机为快速装模作好预备,当您需要弯制很多小批量零件时,这是一个不容置疑的考虑理由.模具: 即使您有满架子的模具,勿认为这些模具适合于新买的机器.必需检查每件模具的磨损,方法是丈量凸模前端至台肩的长度和凹模台肩之间的长度.
Between the length of the repeat precision of CNC bending machine slider is 0.0004 inches, forming accurate perspective should be adopted in such precision and good mold. Manual bending machine slider accuracy is + 0.002 inches, and the appropriate die under the premise will generally + 2 to 3 degrees of deviation. In addition, CNC bending machine for fast loading mode ready when you need to bend of a lot of small quantities of spare parts, this is a no doubt considered reason. The mould: even if you have a shelf full of mould, don't think these molds suitable for buy a new machine. Need to check every piece of die wear, the method is a measure of the punch front to shoulder and concave die shoulder length.
精度: 弯曲精度是一个需要慎重考虑的因素,恰是这个因素,决定了您需要考虑一台CNC折弯机仍是手控折弯机.假如弯曲精度要求±1°,而且不能变,您必需着眼于CNC机.
Accuracy: the bending precision is a need to seriously consider the factors, is precisely this factor, you need to consider a CNC bending machine or hand controlled bending machine. If bending accuracy + - 1 DEG, and can not be changed, you must focus on the CNC machine.
为了选择最低的吨数规格,最好为大于材料厚度的弯曲半径作打算,并尽可能地采用自由弯曲法.弯曲半径较大时,经常不影响成件的质量及其今后的使用.
In order to select the minimum tonnage specifications, it is best to greater than the material thickness of the bending radius to, and as far as possible the free bending method. Bending radius is larger, often does not affect the quality and use them in the future.
压印弯曲与有底凹模弯曲相同,只不外把凸模的前端加工成了需要的弯曲半径,而且冲程底真个凸凹模间隙小于材料厚度.因为施加足够的压力（大约是自由弯曲的10倍）迫使凸模前端接触材料,基本上避免了回弹.
Stamping bending die bottom and bending of the same, but only to punch the front-end processing to the bending radius, and at the bottom of the stroke is really a clearance between punch and die is less than the thickness of the material. Because exert enough pressure (about 10 times the free bending) forcing the punch nose contact material, basically to avoid the rebound.
数控折弯机对于有底凹模弯曲,模具角度一般为86 ~ 90°.在行程的底端,凸凹模之间应有一个略大于材料厚度的间隙.成形角度得以改善,由于有底凹模弯曲的吨数较大（约为自由弯曲的4倍）,减小了弯曲半径范围内通常引起回弹的应力.
CNC bending machine for bending die bottom, die angle is 86 ~ 90 degrees. At the bottom of the trip at the bottom of the, between the punch and the die should have a slightly larger than the material thickness of gap. Forming angle can be improved, due to bending die bottom tons larger (about four times the free bending), reduce small bending radius in the range usually cause rebound stress.
通常,自由弯曲模在新折弯机上产生的回弹角≤2°,弯曲半径即是凹模启齿距的0.156 倍.
Usually, the springback free bending die bending machine produced in the new angle less than 2 degrees, the bending radius that is 0.156 times the die opening distance.
数控折弯机就自由弯曲而言,凸模和凹模按85°或小于85°加工,采用这组模具时,留意凸模与凹模在冲程底真个旷地空闲,以及足以补偿回弹而使材料保持90°左右的过度弯曲.
CNC bending machine free bending, convex die and the concave die according to 85 DEG or less than 85 DEG processing using this set of mold, pay attention to the convex die and the concave die in the bottom of the stroke really a desert land idle, and enough to compensate springback and keep the material about 90 DEG excessive bending.
假如弯曲半径小于材料厚度,须采用前端圆角半径小于材料厚度的凸模,并求助于压印弯曲法.这样,就需要10倍于自由弯曲的压力.
If the bending radius is less than the thickness of the material, the tip fillet radius should be less than the thickness of the punch, and turn to the stamping bending method. So, it needs 10 times as much pressure as the free bending.
零件的弯曲半径: 采用自由弯曲时,弯曲半径为凹模启齿距的0.156倍.在自由弯曲过程中,凹模启齿距应是金属材料厚度的8倍.若弯曲半径差未几小到材料厚度,须进行有底凹模成形.不外,有底凹模成形所需的压力比自由弯曲大4倍左右.
Parts of the bending radius: the free bending, bending radius of die openings from 0.156 times. In free bending process and die mouth distance should be 8 times the thickness of metal material. If bending radius as small to material thickness, is the subject of a bottom die forming. Nevertheless, die bottom forming the required pressure than free bending 4 times or so.
材料牌号也是一个枢纽因素.与低碳钢比拟,不锈钢需要的载荷通常增加50%左右,而大多数牌号的软铝减少50%左右.您随时可以从折弯机厂商那里得到机器的吨数表,该表显示在不同厚度、不同材料下每英尺长度所需要的吨数估算.
Material is a key factor. Compared with low carbon steel, stainless steel to load usually increase about 50%, and most brands of soft aluminum reduced 50%. You can always tonnage machine table available from the bending machine vendors, the table shows tons per foot length under different thickness, different materials are required for estimation.
挠变:您还要考虑这台机器可能发生的挠变.在相同的载荷下,10英尺机工作台和滑块泛起的挠变是5英尺机的4倍.这就是说,较短的机器需要较少的垫片调整,就能出产出合格的零件.减少垫片调整又缩短了预备时间.
Deflection: you have to consider the machine possible deflection. Under the same load, 10 feet machine working table and a slider float to the surface deflection is 5 feet machine 4 times. That is to say, shorter machines need less adjusting shim, can produce qualified parts. Reduce the pad adjustment and shorten the time of preparation.
工件:第一个值得考虑的重要事项是您要出产的零件,要点是购买一台能够完成加工任务而工作台最短、吨数最小的机器.仔细考虑材料牌号以及最大加工厚度和长度.假如大部门工作是厚度16 gauge、最大长度10英尺的低碳钢,那么自由弯曲力不必大于50吨.不外,若是从事大量的有底凹模成形,也许应该考虑一台150吨位的机床.假定最厚的材料是1/4英寸,10英尺自由弯曲需要165吨,而有底凹模弯曲（校正弯曲）至少需要600吨.假如大部门工件是5英尺或更短一些,吨数差未几减半,从而大大降低购置本钱.
The first important issues worth considering is that you want to produce parts, point is to buy a can complete the processing tasks and work table, the shortest tonnage minimum machine. Carefullyconsider material processing and the maximum thickness and length. If the job is low carbon steel with thickness of 16 gauge, the maximum length of 10 feet. Then the bending force need not be more than 50 tons. However, if in the bottom of dies. The forming, may be considered a 150 ton machine. Assuming the thick material is 1/4 inches, 10 foot free bending needs 165 tons, while the bottom die bending (bending correction) needs at least 600 tons if. Department of workpiece is 5 feet or less tonnage almost halved, thus greatly reduce the purchase cost.
数控折弯机型号如何选择，折弯机从以上几个因素加以考虑:
Bending machine models how to choose, bending machine from the following factors to be taken into account:
西南大宗
西南大宗
