Shanghai Daoqin Plastics Co., Ltd.

        ⑴ 图形 绘 made methods

        图形 绘 made methods 虽依各人习惯而不尽 same, below/following and 建议, can 供参考.

        ① 图形 不绘 conditions. parts 图 目 is is parts 构造, is processing parts provide 图示说明. non standards parts, or is standards parts still 需进一步 processing parts 均需绘 made parts 图. 以图1-75冲孔落 material grade is 例, lower base/seat 20虽 is standards parts, still need in its upper processing material 孔, 螺钉 孔 and 销钉孔, therefore need parts 图;导柱, sleeve/set and 螺钉销钉 and other parts is standards parts 也不需进一步 processing, therefore can parts 图.

        ② parts 图 视图布置. is ensure made parts positive property, 建议按 assembly 位置画 parts 图, type parts processing 位置(generally 轴心线 is water 平布置). 以图1-75 示 凹模18 is 例, assembly in parts 主视图反映 thick degree direction structure, 俯视图则 is 原平面 inner structure 情况, 如图1-76 示, in 绘该凹模18 parts 图时, 建议就按 assembly upper 状态 布置 parts 图 视图. 实践证明: this can has 效 避免投影关系绘 made 错误.

        ③ parts 图 绘 made steps. made mold assembly rear, for assembly 图 拆画 parts 图. recommendation made steps lower:

        绘 made parts 图时, dimensions can 先引出, related dimensions rear 标注. 图1-75 示, mold can separation is as parts, 辅助构 parts and other parts large separation. in parts 图时, made generally using/adopting “工 as parts excellent 先, lower upper ” steps 进行. 如图1-75 示, 凹模18 is as parts can 首先画出, 如图1-76 示,

        绘完凹模18 rear, for assembly 图, material sheet/plate 17 and 凹模18 related, its inner and 凹模洞口完 full 一致, inner dimensions ratio 凹模洞口 mono large 出0.5mm, according to this 一关系画出卸 material sheet/plate 17, 如图1-85 示;接 lower again 画冲孔凸模11, 13 and material 凸模7(如图1-80 示);然 rear 画凸模 solid sheet/plate 10, 如图1-77 示, again for mold assembly 图画出垫 sheet/plate 9(图1-78) and upper base/seat 1(图1-91). in upper separation parts 图时, attention/notes upper base/seat 1, upper sheet/plate 9, 冲孔凸模 solid sheet/plate 10 and 凹模18 and other sheet/plate upper 螺钉, 销钉孔 位置应一致.

         in lower separation parts 图时, generally using/adopting “工 as parts excellent 先, upper lower ” steps 进行. for 照凹模先画两 导 material sheet/plate 14, 如图1-79 示;然 rear for assembly upper assembly 关系, use material 销钉孔, again material sheet/plate 16; in upper add upper material 销钉孔. in lower parts 图时, attention/notes 经 导 material sheet/plate 14, 凹模18 and lower base/seat 1 upper and 销孔位置, meanwhile lower base/seat 20 upper material 孔 位置 need and 凹模 孔位一致. according to upper steps, according to assembly for parts requirements, made parts 图 图形, can very easy positive made mold parts 图形, make and assembly 关系完 full combined.

        ⑵ dimensions methods

         from mold design has this 样 体会标注 dimensions is large difficulty/challenge. however 初学者 in 普遍存 in types “ heavy 图形, light dimensions 标注” 倾 toward, in parts upper dimensions 经常出现错误 relatively more or mixed 乱 情况;甚至出现螺孔销钉孔错位, make mold method assembly heavy 错误, dimensions 漏公差 value and other phenomenon more is 普遍. therefore dimensions 标注时, according to assembly upper assembly 关系, use “联系 for 照” methods dimensions, can has improve/increase dimensions positive rate, tool has relatively good combined property.

        ① dimensions methods. for/regarding 初学者出现 dimensions 标注紊乱, strip/profile and other phenomenon, main/primary is dimensions methods 不当. need use has dimensions in upper combined 理, strip/profile 理清晰, must very good 运筹. 图1-77 示 凸模 solid sheet/plate parts in, has 近24 dimensions and 4 几何公差 dimensions 标注, its in 俯视图 left and lower 方布置螺钉, 销钉孔 孔距 dimensions and sheet/plate outer 形直径 dimensions; internal 则布置孔形 dimensions, amount 错开标注避免交叉. 如图1-75 示主视图 upper 布置 冲圆孔凸模11 and 冲方孔凸模13 and material 凸模7 solid 定孔形状 dimensions and sheet/plate thick degree and other dimensions;几何公差 dimensions 插空标注. this type of methods combined utilizing parts 图形周围 空白, strip/profile separation 明, also 方便读图.

        ② dimensions 标注 思路. need make dimensions positive 确, need dimensions 标注 “思路”. front requirements made has parts 图 图形而先不标注任何 dimensions, is is in dimensions can 够统筹兼顾, use types positive 确 “思路” positive 确 标注 dimensions. lower 面以图1-75冲孔落 material grade is 例阐述 dimensions 标注 “思路”.

        ● 标注工 as parts dimensions. as parts dimensions based on manufacturing process different has types 形式. is method manufacturing, 则凸模 and separation 别标注公称 dimensions and 公差;二 is combined method manufacturing, 则基准 parts 标注公称 dimensions and 公差, versus parts 标注公称 dimensions and and parts combined 间隙.

        ● 标注 related parts related dimensions. related dimensions positive 确, mold parts can assembly formed sleeve/set mold. in lower separation, related dimensions 标注建议 according to “自 upper lower ” 顺序进行. from as parts 凹模18开始, assembly 图1-75, and parts mold related parts has inner 六角螺钉19, 销钉23, 沉头螺钉25, material sheet/plate 14, from analysis this related 关系入手进行 related dimensions 标注.

        凹模18 and 销钉23 formed H7/m6配 combined, 故销钉孔直径 is Ф8H7. 销钉23 and 凹模18, lower base/seat 20 formed H7/m6配 combined, therefore lower base/seat 20 upper 销钉孔直径也应 is Ф8H7, meanwhile is 40 and 101, can in lower base/seat 20 parts upper this dimensions.

        凹模18 and 4 M8 inner 六角螺钉19 is 螺纹联接, therefore 凹模18 图纸 upper for 应螺纹孔应标注 is 4×M8;螺钉由 lower base/seat 拧入, versus 应 图纸 upper 应立即标注4×M8, 螺纹孔距均 is 76 and 101.

        凹模18 also and material sheet/plate 14, 27 related. from assembly 关系知: 两 导 material sheet/plate and 凹模各 use 两 沉头螺钉25 and 两 销钉22连接, therefore in upper need 标出4 M8 沉头螺钉25 螺纹孔, and 4 M8 inner 六角螺钉19 孔一起 can is 8×M8;凹模 upper 四 销钉孔 can separation 别标注2×Ф8H7也 can 一起标 is 4×Ф8H7; and for 应 导 material sheet/plate 标注如图1-79 示.

        标注完凹模 and related parts upper related dimensions rear, again 标注凸模 solid sheet/plate 10 upper related parts related dimensions, type 推直至 upper in has parts related dimensions 标注完毕. upper separation and through sheet/plate di has 0.5～1mm 间隙, therefore sheet/plate 9 upper versus 应 孔直径 is Ф9mm, in versus 应 图样 upper 标出.

         again 举一例进一步说明 related dimensions 标注. assembly in 冲孔凸模11, 13 and 冲孔凸模 solid sheet/plate 10 related; its in 冲孔凸模 solid sheet/plate 10 versus is 一吊装 solid 定台阶孔, deep degree and 冲圆孔凸模吊装段 and other high, is 3mm, 孔径应 ratio 凸模台阶直径 large 出0.5～1mm, is Ф17mm;Ф14mm and solid sheet/plate formed H7/m6 配 combined, 即冲孔凸模 solid sheet/plate 10 upper for 应孔直径应 is Ф14mm. upper dimensions 应依次 meanwhile 标注. 冲孔凸模11, 13 and material 凸模7 parts 图如图1-80 示.

         mold upper separation related dimensions can 按“自 lower upper ” 顺序标注. 先标注 elastic pressure material sheet/plate 17 and material 钉21, elastic pressure material sheet/plate and material 螺钉4 between related dimensions; again 标注凸凹模 solid sheet/plate 6 and 凸凹模7, material 螺钉8, solid 螺钉3, 圆柱销4 between related dimensions, methods has related dimensions 标注完毕.

        ● 补 full other dimensions and technology requirements. this stage/phase can parts 进行, full other dimensions, 例如轮廓 large small dimensions, dimensions and other; again 标注各 processing surface coarse degree requirements and 倒角, processing 情况, most rear is material selection and hot 处理, for parts 进行命名 and other.

         dimensions in, generally pressure mold parts surface coarse degree value can 参照如 lower experience value:

        a冲 pressure mold upper, lower base/seat, upper, lower sheet/plate, 凸, solid sheet/plate, material sheet/plate, pressure material sheet/plate, material sheet/plate and material sheet/plate and other parts surface coarse degree Ra value usually is 1.6～0.8µm. sheet/plate type parts surface coarse degree Ra value usually is 6.3～3.2µm.

        b冲 pressure mold and 凹模工 as surface coarse degree Ra value usually is 0.8～0.4µm;凸模 and solid 定部位 and and combined sheet/plate surface coarse degree Ra value usually is 3.2～O.8µm.

        c卸 material (顶 material) parts and 凸模(凹模)配 combined surface coarse degree Ra value usually is 6.3～3.2µm.

        d螺栓 or other parts non combined surface coarse degree Ra value usually is 12.5～6.3µm. 销钉孔面 surface coarse degree Ra value usually is 0.8µm.

        ③ other dimensions issues

        ● complex type dimensions 标注. 形状越 complex, dimensions more, 由此造 formed 标注困 difficult is 初学者 design pressure main/primary 障碍. 如图1-77 示 凸模 solid sheet/plate parts, 因洞口形状 dimensions more 而出现标注困 difficult. has solution methods: is large method, will parts 图适当放 large rear again dimensions;二 is 移出放 large method. will complex type mono 独移至 parts outer 面 适 combined 位置, again mono 独标注 type dimensions, parts inner 仅标注 type 孔图形 位置 dimensions can.

        ● its it sheet/plate upper type 孔 配 made 标注. in 进行凹模洞口 刃口 dimensions 计算时, how to semi dimensions R, in for R amount 手段以 and use requirements 而定, has can 精确测定R value amount tool, for R value 进行刃口 dimensions 计算;如仅 has and other 常规测 amount tool, can in 凹模图 upper 标注原注R value.

         due to outer 形, 凹模洞口 and other sheet/plate upper versus type is in 同一台线切割 machine upper use processing 程序, according to 线切割 machine 床 “间隙自动补偿” function make its in 线切割 machine 床 割 made process in 自动配 made 一定 间隙而 formed, therefore other sheet/plate upper type can upper made processing features 进行标注, simple 明晰, also combined mold made as 实际. if solid sheet/plate made method features 进行标注时, in sheet/plate inner type 孔 位置 dimensions, type 孔 形状 dimensions in 图样 适当位置 add 注: “ type dimensions 按凸模 实际 dimensions formed 0.02mm combined ”即 can.