Shanghai Daoqin Plastics Co., Ltd.

        一, 数控冲床 mold pressure process

        1.退 material sheet/plate and sheet/plate material 接触 2.冲头接触 sheet/plate material, sheet/plate material deformation 3.材 material in force 点开始 fracture 4. waste material from sheet/plate material in fracture 出 5.冲头冲 pressure to 底 6.冲头回 shrink, waste material lower 落, pressure 工序完 formed

        二, from waste material 情况看出 信息

         waste material essence upper is formed 形孔 反像. 即位置 versus same 部位. through waste material, can upper lower 模间隙 is positive 确. if large, waste material 会出现 coarse 糙, fracture and narrow light belt/tape 区域. 间隙越 large, fracture and light belt/tape formed degree large. if small, waste material 会呈现出一 small degree fracture and wide light belt/tape 区域.

         large 间隙形 formed belt/tape has relatively large and 边缘撕裂 孔, 令剖面稍 micro has thin 边缘突出. small 间隙形 formed belt/tape micro and large degree 撕裂, 导致剖面 or more or less 垂直于材 material surface.

        一 理想 waste material has combined pressure and uniform light belt/tape. this can maintain pressure most small formed belt/tape less 毛刺 整洁圆孔. from this 点 看, through increase large 间隙 延 long mold lifespan is 以牺牲 formed product quality 换取.

        三, is what need use positive lower 模间隙?

        (1) most 佳间隙: 剪切裂缝结 combined, 均衡冲 pressure, parts quality and mold lifespan.

        (2) 间隙太 small: and other 剪切裂缝, pressure improves, shrink short mold use lifespan.

        四, mold selection

         mold and pressure material type type and thick degree has 关. combined 理 间隙 can formed below/following issues:

        (1) 如间隙 large, pressure parts 毛刺就 comparison large, pressure quality 差. if 间隙偏 small, although quality relatively good, mold abrasion loss comparison heavy, large large reduce mold use lifespan, but also easy formed 冲头 折断.

        (2) large or small easy in 冲头材 material upper generate viscous 连, from formed pressure belt/tape material. small 间隙容 easy in 冲头底面 and sheet/plate material between formed true 空而发生 waste material elastic.

        (3) combined 理 间隙 can long mold lifespan, material good, decrease small and 翻边, sheet/plate maintain 洁净, 孔径一致不会刮花 sheet/plate 材, decrease/reduce abrasion 次数, maintain sheet/plate 材平直, 冲孔定位准确.

        请参照 lower table/sheet selection mold 间隙(table/sheet in data is separation 数)

        五, how to improve/increase mold use lifespan

         for use 户 讲, improve/increase mold use lifespan can large large reduce pressure cost. effect/influence mold use lifespan factors lower:

        1, material type type and thick degree.

        2, is selection combined lower 模间隙.

        3, mold structure 形式.

        4, material pressure is has good lubricated.

        5, mold is 否经 特殊 surface treatment, titanium, carbon nitrogen titanium.

        6, upper lower for in property.

        7, adjustment sheet/slice combined use.

        8, is 否适当 using/adopting 斜刃口 mold.

        9, amount use standards mold processing non standards 形状.

        10, machine base/seat is already abrasion loss. 六, pressure 计算

         if pressure thick sheet/plate, 冲孔径 also comparison large, need 精确计算 need force. if ultra- machine 额定吨位, easy formed machine and mold loss bad. therefore in large upper pressure processing comparison thick sheet/plate material 时, need using/adopting lower 面 公式 计算冲 pressure:

        冲 pressure (KN)=冲 pressure 孔 周 long (L)×材 material thick degree (T) ×0.345×材 material 因数(F) ×剪切因数(S) mono is mm, material 因数(F) selection (见 lower table/sheet)

        材 material table/sheet:

        剪切因数曲线 table/sheet (见 lower 图)剪切 strong/high degree (当刃口不 is 斜刃口时, 剪切因数 is 100%)

        冲孔周 long 计算, lower 图:

        七, pressure dimensions attention/notes issues

        (1) most small 孔径 冲φ0.8~φ1.6 scope/range 冲孔请 use 特殊冲头.

        (2) thick sheet/plate 冲孔时, versus for/regarding processing 孔径, use large mold.

         attention/notes: 此时, use usually large small mold, formed 冲头螺纹 破 loss.

        例1, lower table/sheet processing conditions, processing although and A工位 mold for 应, use B工位 mold.

        (3) 冲头刃口部 separation, most small wide degree and long degree ratio/proportion generally small 于1:10.

        例3, long 方形冲头, long degree 80mm时, wide degree 取≥8mm most combined 适.

        (4)冲头刃口部 separation most small dimensions and sheet/plate thick 关系. 建议冲头刃口部 separation most small dimensions sheet/plate thick 2倍.

        八, mold abrasion amount 计算

        冲头刃口部 separation long degree, material sheet/plate thick degree, material thick degree, deep degree, lower 图

        (理论)刃 abrasion amount =冲头刃口 long degree —退 material sheet/plate thick degree —材 material thick degree —入模 deep degree

         for/regarding C, D, E工位老式 structure 冲头, if sheet/slice high degree large, 冲头 键槽 and base/seat upper 定位键无 method combined, formed mold method positive use. therefore, most large abrasion amount can is 3mm.

        九, mold abrasion

        1, mold abrasion important property

        定期刃 abrasion mold is quality property ensure. 定期刃 abrasion mold not only can improve/increase mold use lifespan but also can improve/increase machine use lifespan, need positive 确 刃 abrasion machine.

        2, mold need abrasion specific 特征

         for/regarding mold abrasion, has 一 严格 打击次数 确定 is need abrasion. main/primary 取决于刃口 锋利程 degree. main/primary below/following factors 决定:

        (1)检查刃口 圆角, if semi to R0.1 mm (most large R value ultra- 0.25 mm)就 need abrasion (见图).

        (2)检查冲孔 quality, is has relatively large generate?(见图)

        (3) through machine pressure 噪声 判断 is need abrasion. if 同一副 mold pressure 时噪声异常, 说明冲头 already 经钝, need abrasion.

        注: 刃口边缘部变圆 or rear coarse 糙, need 考虑刃 abrasion.

        3, abrasion loss degree and 冲孔次数关系 analysis

        4, abrasion methods:

         mold abrasion has multiple methods, can using/adopting specialized abrasion machine can in abrasion upper achieve. 冲头, lower abrasion frequency degree generally is 4 ratio 1. abrasion rear adjustment good mold high degree.

        (1)不 positive abrasion methods 危害

        不 positive 确 刃 abrasion add mold 刃口 迅 speed bad, make 每次刃 abrasion 打击次数 large large shrink small.

        (2) positive 确 刃 abrasion methods 益处

        定期刃 abrasion mold, quality and degree can maintain stability. mold 刃口就 loss bad relatively slow, lifespan more long.

        5, abrasion 规则:

         mold abrasion need lower factors:

        (1)刃口圆角 in R0.1-0.25 mm large small lower need 看刃口 锋利程 degree.

        (2)砂轮 surface need dry 净.

        (3)精 positive company using/adopting types hydrophobic 松, coarse 粒, soft 砂轮. 如WA46KV

        (4)每次 abrasion amount (吃刀 amount)不应 ultra- 0.013 mm, abrasion amount large formed mold surface hot, versus 当于退火处理, mold soft, large large reduce mold lifespan.

        (5)刃 abrasion must add cooling liquid.

        (6) abrasion 削时应 ensure and lower solid 定平稳, using/adopting specialized 工装夹 tool.

        (7) mold abrasion amount is 一定, if to value, 冲头就 need waste. if use, easy formed mold and machine loss bad, 不偿失.

        (8)刃 abrasion rear, 边缘部 need use 油石处理, separation 尖锐 棱线.

        (9)刃 abrasion rear, need dry 净, magnetic, upper 油.

        注: mold abrasion amount large small main/primary 取决于 冲 pressure sheet/plate thick degree.

        十, use front attention/notes

        1, 存放

        (1) use dry 净抹布 upper sleeve/set outer scratch dry 净.

        (2)存放时 small surface need 出现刮痕 or 凹痕.

        (3) upper anti 锈.

        2, use front 准备

        (1) use front 彻底清洁 upper sleeve/set.

        (2)查看 surface is has 刮, 凹痕. has, use remove.

        (3)里 outer upper 油.

        3, 安装冲头于 upper sleeve/set precautions

        (1)清洁冲头, to its long upper 油.

        (2) in large mold upper 冲头插入 upper sleeve/set 底部, can use force. can use nylon 锤. 安装时, can through upper sleeve/set upper solid 定冲头, has in positive 确定位 rear can 旋紧螺栓.

        4, upper combined 入转塔

         if long mold use lifespan, upper sleeve/set outer and 转塔孔 between need can can small. therefore small 心执行 lower 列程序.

        (1)清洁转塔孔 键槽 and inner 直径并 upper 油.

        (2) adjustment upper sleeve/set 键槽, make and 转塔孔 键吻 combined.

        (3) upper sleeve/set 导直直 插入塔孔, small can has 任何倾斜. upper sleeve/set 应该靠自身 weight slip 入转塔孔.

        (4) if upper sleeve/set toward 一边倾斜, can use nylon type soft material tool it light light positive. heavy 复敲击直至 upper sleeve/set 依靠自身 weight slip positive 确位置.

         mold micro 信: mujudaren

         attention/notes: can use force upper sleeve/set outer 直径, can in 冲头顶 upper use force. can upper sleeve/set 顶部, loss bad 转塔孔, shrink short 别工位 use lifespan.

        十一, mold 检修

         if by material 咬住, 取不出, 请按如 lower project 检查.

        1, 冲头, lower again abrasion. 刃口锋利 mold can processing 出漂亮 切断面, 刃口钝, need outer pressure, but also parts coarse 糙, generate very large resistant force, formed by material 咬住.

        2, mold 间隙. mold if versus for sheet/plate thick 选 不 combined 适, in 脱离材 material need very large demolding force. if is this causes by material 咬住, more combined 理间隙 lower 模.

        3, processing material 状态. material 弄脏, or has 污垢时, 脏东西附 to mold upper, make by material 咬住而无 method processing.

        4, has deformation material. warpage material in 冲完孔 rear, 会夹紧冲头, make by 咬住. has warpage material, 请弄平整 rear again processing.

        5, elastic degree use. make elastic fatigue. 请时常 attention/notes elastic property can.

        十二, 注油

        油 amount and 注油次数视 processing material conditions 而定. cold sheet/plate, resistant sheet/plate and other 无锈无垢 材 material, need to mold 注油, 注油点 is sleeve/set, 注油口, and sleeve/set 接触面, lower and other. use light machine 油.

         has has 垢 材 material, processing iron micro powder 会吸入冲头 and sleeve/set between, generate 污垢, make 冲头不 can in sleeve/set inner sliding, this type of lower, if upper 油, make more easy upper, therefore this type of material 时, versus need scratch dry 净, month separation understanding 一回, use 汽(柴)油 冲头, lower 模 污垢 掉, heavy new front again scratch dry 净. this can ensure mold has good lubricated property can.

        十三, mold use process in 经常出现 issues and solution methods

        十四, pressure non metal material precautions

        钣金 industrial development already ultra- 出 传统意义 upper metal sheet/plate parts processing, in 也包括 non metal sheet/plate material processing. in 数控冲床 upper processing non metal material attention/notes below/following several issues:

        1, 冲头, lower 模 刃口 need maintain 锋利.

        2, lower 模间隙 need decrease/reduce 5%~8%(ratio cold sheet/plate).

        3, using/adopting positive structure lower 模.

        4, to speed degree small, ensure 足够 卸 material time.

        5, if sheet/plate material upper has pressure 痕, using/adopting light type elastic 簧.

        6, hard plastics pressure front, add lubricated liquid.

         for/regarding pressure soft thin material, most easy issues is surface pressure 痕, remove maintain 刃口锋利 outer, most important is need using/adopting light type elastic or light type elastic parts, reduce pressure material force, remove 划痕. 十五, use molding tool precautions

        1, different Model/Grade machine slip block different, therefore need attention/notes molding mold high degree adjustment.

        2, need ensure molding separation, therefore need fine adjustment, adjustment amount most good need ultra- 0.15 mm, if adjustment amount large, easy formed machine loss bad and mold loss bad.

        3, for/regarding tensile molding, selection light type elastic parts, anti sheet/plate material 撕裂, or deformation non-uniform material difficult and other.

        4, in molding mold 周围安装球 type mold, anti sheet/plate material 倾斜.

        5, molding 位置应当尽 amount 远离夹钳.

        6, molding processing most good in processing most rear achieve.

        7, need ensure sheet/plate good lubricated.

        8, 定货时 attention/notes molding tool let issues, if molding comparison 近, 请一定 need company sales 员进行沟通.

        9, is molding tool need relatively long material time, therefore molding processing 时一定 need using/adopting low speed, most good need has 延时.

        十六, use long 方形切断刀 precautions

        1, 步距尽 amount large, need large 于整 刀 tool long degree 80%.

        2, most good through achieve 跳跃步冲.

        3, selection 斜刃口 mold.

        十七, in ultra- machine force lower how to 冲孔

         production process in need large 于114.3mm直径 圆孔. large ultra- 出 machine force upper 限, especially for/regarding high strong/high degree material. through more 次冲孔 methods large dimensions can solution this issues. use small dimensions mold large long can reduce semi or more more pressure, in already has mold in can can large separation mold can to. below/following separation use 圆形, di D, belt/tape 圆角矩形, 凸透镜形 mold can large 孔径圆形. in this types lower, waste material from fall 落, has waste material in as upper.

        十八, 一 冲 large 圆孔 简 easy methods

         this type of 凸透镜 mold can by made formed 你 需 semi dimensions. if ultra- 出冲床公称 force, recommendation use (A) solution/scheme. use mold 冲出圆形 周边. if can in 冲床公称 force scope/range inner formed, that 么一 放射形 mold and 一凸透镜 mold can in 四次之 inner pressure 出 需 孔而无 must mold (B)

        十九, most rear toward lower formed 形

        当 selection formed mold 时, 应避免进行 toward lower formed as, is this 样会占 use more 垂直空间 and 导致额 outer or bending sheet/plate 材工序. toward lower formed can can lower 模, rear by 拉出转塔, however, if toward lower formed is process selection, that 么应该 it as is for sheet/plate most rear 一步处理工序.

        二十, anti material 扭曲

         if need in sheet/plate upper a large amount of sheet/plate also can unchanged 整, formed can can is pressure force 累积. 冲切一 孔时, 孔周边材 material by toward lower tensile, sheet/plate upper surface force increase large. lower 冲运动也导致 sheet/plate lower surface pressure force increase large. for/regarding a small amount of 孔, 结果不 obvious, 但随 冲孔数目 increase, force and pressure force formed increase to sheet/plate deformation.

        消 remove this type of deformation methods is: 每隔一 孔冲切, rear 返回冲切剩余 孔. this although in sheet/plate upper generate same force, understanding toward 连续一 紧接一 冲切而 generate force / pressure force poly. 如此也令第一批孔 separation 担 第二批孔 部 deformation 效应.

        二十一, if 你 不锈钢翻边 deformation

         in manufacturing 翻边之 front toward material use excellent formed lubricant, this can material more good from mold in separation 离出, in formed 形时顺畅 in lower surface 移动. to material more good machine distribution by bending and by tensile generate force, anti in formed 形翻边孔边 upper deformation and 翻边孔底部 abrasion loss.

        二十二, 克服卸 material difficult 几点建议

        1, use belt/tape has fine 芯胶粒 冲头.

        2, increase lower 模间隙.

        3, elastic fatigue degree.

        4, use heavy type mold.

        5, amount decrease/reduce abrasion loss.

        6, using/adopting 斜刃口 mold.

        7, lubricated sheet/plate 材.

        8, large mold need poly amine material 头.

        二十三, formed waste material elastic main/primary causes

        1, 刃口 锋利程 degree. 刃口 圆角越 large, easy formed waste material elastic.

        2, mold modulus. 每 工位 mold pressure 时, modulus requirements is 一定, modulus small, easy formed waste material elastic.

        3, mold is combined 理. combined mold 间隙, easy formed waste material elastic.

        4, by processing sheet/plate surface is has 油污.