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模具制造的磨削加工要求

来源:http://www.sdlqmj.com 日期:2019-03-25 发布人:admin 浏览次数:
精磨时选择好恰当的磨削砂轮非常重要,针对模具钢材的高钒高钼情况,选用GD单晶刚玉砂轮比拟适用,当加工硬质合金、淬火硬度高的材质时,优先采用有机粘结剂的金刚石砂轮,有机粘结剂砂轮自磨利性好,磨出的工件粗糙可达Ra=0.2μm,近年来,随着新资料的应用,CBN砂轮,也即立方氮化硼砂轮显现出非常好的加工效果,在数控成型磨,坐标磨床,CNC内外圆磨床上精加工,效果优于其它品种砂轮。磨削加工中,要留意及时修整砂轮,坚持砂轮的锐利,当砂轮钝化后,会在工件外表滑擦、挤压,形成工件外表烧伤,强度降低。
It is very important to select proper grinding wheels in precision grinding. In view of the high vanadium and molybdenum content of die steel, GD single crystal corundum wheel is comparatively suitable. When processing hard alloy and high quenching hardness materials, organic binder wheel is preferred. The self-grinding advantage of organic binder wheel is good. The roughness of the grinded workpiece can reach Ra=0.2um. In recent years, with the new information, with the development of new materials. In application, CBN grinding wheel, i.e. cubic boron nitride grinding wheel, shows very good processing effect. It is better than other grinding wheels in CNC forming grinding, coordinate grinding, CNC inner and outer grinding machine. In grinding process, attention should be paid to timely dressing the grinding wheel, adhere to the sharpness of the grinding wheel. When the grinding wheel is passivated, it will rub and extrude on the surface of the workpiece, resulting in burns on the surface of the workpiece, and the strength will be reduced.
板类零件的加工大局部采用平面磨床加工,在加工中常会遇到一种长而薄的薄板零件,此类零件的加工较难。由于加工时,在磁力的吸附作用下,工件产生形变,紧贴于工作台外表,当拿下工件后,工件又会产生回复变形,厚度丈量分歧,但平行度达不到请求,处理的方法可采用隔磁磨削法,磨削时以等高块垫在工件下面,四面挡块抵死,加工时小进刀,多光刀,加工好一面后,可不用再垫等高块,直接吸附加工,这样可改善磨削效果,到达平行度请求。
Most of the plate parts are processed by surface grinder. A kind of long and thin thin thin plate parts are often encountered in the process. It is difficult to process such parts. Because the workpiece deforms under the action of magnetic force adsorption, which is close to the surface of the worktable. When the workpiece is taken off, the workpiece will produce recovery deformation and thickness measurement divergence, but the parallelism can not reach the request. The method of processing can adopt the magnetic isolation grinding method. When grinding, the workpiece can be padded under the workpiece with equal heights, the four-sided block can withstand, the small feed cutter and multi-light cutter can be processed well. After one side, no need to pad contour blocks, and directly adsorb processing, so as to improve the grinding effect and achieve the parallelism request.
山东模具制造厂家产品
轴类零件具有回转面,其加工普遍采用内外圆磨床及工具磨床。加工过程中,头架及顶尖相当于母线,假如其存在跳动问题,加工出来的工件同样会产生此问题,影响零件的质量,因而在加工前要做好头架及顶尖的检测工作。停止内孔磨削时,冷却液要充沛浇到磨削接触位置,以利于磨削的顺利排出。加工薄壁轴类零件,好采用夹持工艺台,夹紧力不可过大,否则容易在工件圆周上产生“内三角”变形。
Shaft parts have revolving surfaces. Internal and external grinders and tool grinders are widely used in their processing. In the process of processing, the head frame and the top are equivalent to busbar. If there is a jumping problem, the workpiece processed will also produce this problem, which will affect the quality of the parts. Therefore, the head frame and the top should be inspected well before processing. When stopping internal hole grinding, coolant should be poured abundantly to the grinding contact position to facilitate the smooth discharge of grinding. When processing thin-walled shaft parts, it is better to use clamping technology platform. The clamping force should not be too large. Otherwise, it is easy to produce "inner triangle" deformation on the circumference of the workpiece.
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The above wonderful content is provided by Shandong Mould Manufacturer. More details about mould making can be collected on our website: http://www.sdlqmj.com. Thank you for your support.

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