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畢業(yè)設(shè)計（論文）成績
畢業(yè)設(shè)計成績
指導(dǎo)老師認(rèn)定成績
小組答辯成績
答辯成績
指導(dǎo)老師簽字
答辯委員會簽字
答辯委員會主任簽字
插圖清單
圖1 分型面的選擇……………………………………………………………………7
圖2 型腔的排列………………………………………………………………………8
圖3 冷料穴的尺寸……………………………………………………………………9
圖4 澆注系統(tǒng)凝料的脫出 …………………………………………………………12
表格清單
表1 塑件的原材料分析………………………………………………………………4
表2 聚碳酸酯注射成型的工藝參數(shù)…………………………………………………6
表3 型芯主要工作尺寸的計算 ……………………………………………………13
表4 型腔主要工作尺寸的計算 ……………………………………………………13
錐齒輪的注塑模的設(shè)計
摘要
本設(shè)計的題目是錐齒輪零件的塑料注塑模設(shè)計，從圖紙上分析：該塑件整體外形回轉(zhuǎn)體，且符合最小壁厚要求，壁厚也較均勻。塑件不僅要在徑向收縮，并且在切向方向上的齒厚也會收縮。
根據(jù)塑件的特點，模具型芯在動模部分。開模后，塑件應(yīng)收縮包緊型芯，而
留在動模部分，利用定模座板上的側(cè)凹和拉料桿將點澆口凝料拉斷，利用拉桿進(jìn)行第2次分型，將凝料從拉料桿上拉出，最后利用推管將制件推出。
對合導(dǎo)向機(jī)構(gòu)的功能是保證動定模部分能夠準(zhǔn)確對合，使分別加工在動模和定模上的成型表面在模具閉合后形成形狀和尺寸準(zhǔn)確的腔體，從而保證塑件形狀，壁厚和尺寸的準(zhǔn)確，該模具采用導(dǎo)柱對合導(dǎo)向機(jī)構(gòu)。導(dǎo)柱和型芯一起安裝在動模一側(cè)，這樣在合模時可起保護(hù)作用。
關(guān)鍵詞：錐齒輪 模具 型芯 推管 收縮
Bevel gear note mold design
Abstract
This design topic is the bevel gear components plastic note molds the design,Analyzes from the blueprint:Should model the overall contour solid
of revolution,Also conforms to the smallest wall thicknessrequirement,Wall thickness is also even. Models not only to have in the radial shrinkage,And in cuts the tooth is thick to the direction in also can contract.
According to models a characteristic,The mold core is moving the mold to be partial. After operates the mold,Models to be supposed to contract Bao Jinxing the core,But remains moves the mold to be partial, Using will decide on the mold base plate the side to sink and to pull the material pole to select the runner to congeal the material to pull,Carries on the 2nd minute using the tension bar,Will congeal the material from to pull on the material pole to pull out, Finally uses pushes the tube to promote the workpiece.
The involution guidance organization function is the guarantee moves decides the mold to be partial can the accurate involution, Causes to process separately in moves the mold and decides on the mold to take shape the surface closed to form the shape and the size accurate cavity body after the mold,Thus guaranteed models a shape, Wall thickness and size accurate,This mold uses the guide pillar involution guidance organization. The guide pillar and the core installs together is moving a mold side, Like this when gathers the mold may get up the protective function.
Key words: Plastic Model Male ejector plate contract