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注塑模具的表面加工工艺

来源:http://www.sdlqmj.com 日期:2019-03-22 发布人:admin 浏览次数:
零件外表在加工时留下刀痕、磨痕是应力集中的中央,是裂纹扩展的源头,因而在加工完毕后,需求对零件停止外表强化,经过钳工打磨,处置掉加工隐患。对工件的一些棱边、锐角、孔口停止倒钝,R化。普通地,电加工外表会产生6-10μm左右的蜕变硬化层,颜色呈灰白色,硬化层脆而且带有残留应力,在运用之前要充沛消弭硬化层,办法为外表抛光,打磨去掉硬化层。
The cutter mark and abrasion mark on the part surface are the center of stress concentration and the source of crack propagation. Therefore, after finishing the processing, it is necessary to stop the strengthening of the part surface and dispose of the hidden trouble by grinding with fitter. For some edges, sharp angles and orifices of the workpiece, stop blunting and R. Generally speaking, the surface of electrical processing will produce a degeneration hardening layer of about 6-10 um, which is gray-white in color, brittle and with residual stress. Before application, the hardening layer should be eliminated abundantly by polishing the surface and removing the hardening layer by polishing.
在磨削加工、电加工过程中,工件会有一定磁化,具有微小磁力,非常容易吸着一些小东西,因而在组装之前,要对工件作退磁处置,并用乙酸乙脂清洗外表。组装过程中,先参看装配图,找齐各零件,然后列出各零件互相之间的配备次第,列出各项应留意事项,然后着手装配模具,装配普通先装导柱导套,然后装模架和凸凹模,然后再对各处间隙,特别是凸凹模间隙停止组配调整,装配完成后要施行模具检测,写出整体状况报告。对发现的问题,可采用逆向思想法,即从后工序向前工序,从精加工到粗加工,逐一检查,直到找出症结,处理问题。
In the process of grinding and electrical processing, the workpiece will be magnetized to a certain extent, with a small magnetic force. It is very easy to absorb some small things. Therefore, before assembling, the workpiece should be demagnetized and cleaned with ethyl acetate. In the assembly process, first refer to the assembly drawings, find out the parts, then list the equipment order between the parts, list the matters needing attention,
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then proceed to assemble the die, assemble the common guide pillar Bush first, then mount the die frame and the punch and concave die, and then stop the assembly and adjustment of the clearances, especially the punch and concave die clearance, after assembly, carry out the mold inspection and write out the whole. Physical condition report. For the problems found, the reverse thinking method can be used, that is, from the later process to the forward process, from finishing to rough processing, one by one inspection, until the crux is found and the problem is dealt with.
理论证明,良好的精加工过程控制,能够有效减少零件超差、报废,有效进步模具的一次胜利率及运用寿命。
The theory proves that good control of finishing process can effectively reduce the overshoot and scrap of parts, and effectively improve the one-time success rate and service life of dies.
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