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天圆地方不锈钢钣金放样下料方法

日期:2024-04-25 08:13
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摘要:<p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;"><span style="font-family:宋體(tǐ);">天圆地方</span></span><span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;"><span style="font-family:宋體(tǐ);">不锈钢</span></span><span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;"><span style="font-family:宋體(tǐ);">钣金放样下料方法</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;"><span style="font-family:宋體(tǐ);"><span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;">1.<span style="font-family:宋體(tǐ);">先实际尺寸画出侧视图和俯视图,然后把俯视图上的</span><span style="font-family:Calibri;">1/4</span><span style="font-family:宋體(tǐ);">圆弧等分(fēn)成</span><span style="font-family:Calibri;">3</span><span style="font-family:宋體(tǐ);">份。再把分(fēn)出的各点(</span><span style="font-family:Calibri;">1</span><span style="font-family:宋體(tǐ);">、</span><span style="font-family:Calibri;">2</span><span style="font-family:宋體(tǐ);">、</span><span style="font-family:Calibri;">3</span><span style="font-family:宋體(tǐ);">、</span><span style="font-family:Calibri;">4</span><span style="font-family:宋體(tǐ);">)用(yòng)直線(xiàn)(</span><span style="font-family:Calibri;">a</span><span style="font-family:宋體(tǐ);">、</span><span style="font-family:Calibri;">b</span><span style="font-family:宋體(tǐ);">、</span><span style="font-family:Calibri;">c</span><span style="font-family:宋體(tǐ);">、</span><span style="font-family:Calibri;">d)</span><span style="font-family:宋體(tǐ);">与</span><span style="font-family:Calibri;">F</span><span style="font-family:宋體(tǐ);">点相连。(步骤相对应</span><span style="font-family:Calibri;">1-1</span><span style="font-family:宋體(tǐ);">图与</span><span style="font-family:Calibri;">1-2</span><span style="font-family:宋體(tǐ);">图)</span></span></span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;"><span style="font-family:宋體(tǐ);"><span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;">2.<span style="font-family:宋體(tǐ);">再画一条直線(xiàn),取一点</span><span style="font-family:Calibri;">I,</span><span style="font-family:宋體(tǐ);">量取高度尺寸以</span><span style="font-family:Calibri;">I</span><span style="font-family:宋體(tǐ);">点為(wèi)起点在直線(xiàn)上标注一点</span><span style="font-family:Calibri;">J</span><span style="font-family:宋體(tǐ);">。然后过</span><span style="font-family:Calibri;">I</span><span style="font-family:宋體(tǐ);">点画一条与其垂直相交線(xiàn),量取直線(xiàn)</span><span style="font-family:Calibri;">a</span><span style="font-family:宋體(tǐ);">的長(cháng)度以</span><span style="font-family:Calibri;">I</span><span style="font-family:宋體(tǐ);">点為(wèi)起点在線(xiàn)上标注一点</span><span style="font-family:Calibri;">K</span><span style="font-family:宋體(tǐ);">,再量取直線(xiàn)</span><span style="font-family:Calibri;">b</span><span style="font-family:宋體(tǐ);">長(cháng)度以</span><span style="font-family:Calibri;">I</span><span style="font-family:宋體(tǐ);">点為(wèi)起点在直線(xiàn)标注一点</span><span style="font-family:Calibri;">L </span><span style="font-family:宋體(tǐ);">。用(yòng)直線(xiàn)</span><span style="font-family:Calibri;">e</span><span style="font-family:宋體(tǐ);">把</span><span style="font-family:Calibri;">K J</span><span style="font-family:宋體(tǐ);">两点相连,再用(yòng)直線(xiàn)</span><span style="font-family:Calibri;">f</span><span style="font-family:宋體(tǐ);">把</span><span style="font-family:Calibri;">L J</span><span style="font-family:宋體(tǐ);">两点相连 。(步骤相对应</span><span style="font-family:Calibri;">1-3</span><span style="font-family:宋體(tǐ);">图)</span></span></span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;"><span style="font-family:宋體(tǐ);"><span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;"><span style="font-family:宋體(tǐ);"><span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;">3.<span style="font-family:宋體(tǐ);">① 以方头一边的長(cháng)度画出一条</span><span style="font-family:Calibri;">P Q</span><span style="font-family:宋體(tǐ);">直線(xiàn),找出</span><span style="font-family:Calibri;">P Q</span><span style="font-family:宋體(tǐ);">直線(xiàn)中心点</span><span style="font-family:Calibri;">O</span><span style="font-family:宋體(tǐ);">画一条与其垂直相交線(xiàn)。</span></span></span></span></span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;">② 以点<span style="font-family:Calibri;">Q</span><span style="font-family:宋體(tǐ);">為(wèi)圆心,直線(xiàn)</span><span style="font-family:Calibri;">e</span><span style="font-family:宋體(tǐ);">為(wèi)半径(以下称</span><span style="font-family:Calibri;">Qe</span><span style="font-family:宋體(tǐ);">圆弧)在垂直相交線(xiàn)上画圆弧相交于点</span><span style="font-family:Calibri;">7</span><span style="font-family:宋體(tǐ);">,用(yòng)直線(xiàn)把</span><span style="font-family:Calibri;">7 Q</span><span style="font-family:宋體(tǐ);">两点相连。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;">③ 以点<span style="font-family:Calibri;">Q</span><span style="font-family:宋體(tǐ);">為(wèi)圆心,直線(xiàn)</span><span style="font-family:Calibri;">f</span><span style="font-family:宋體(tǐ);">為(wèi)半径画圆弧(以下称</span><span style="font-family:Calibri;">Qf</span><span style="font-family:宋體(tǐ);">圆弧)。再量取俯视图中的点</span><span style="font-family:Calibri;">1</span><span style="font-family:宋體(tǐ);">与点</span><span style="font-family:Calibri;">2</span><span style="font-family:宋體(tǐ);">之间的弦長(cháng)(以下称</span><span style="font-family:Calibri;">1</span><span style="font-family:宋體(tǐ);">~</span><span style="font-family:Calibri;">2</span><span style="font-family:宋體(tǐ);">弦長(cháng))為(wèi)半径,点</span><span style="font-family:Calibri;">7</span><span style="font-family:宋體(tǐ);">為(wèi)圆心画圆弧相交于点</span><span style="font-family:Calibri;">6</span><span style="font-family:宋體(tǐ);">,用(yòng)直線(xiàn)把</span><span style="font-family:Calibri;">6 Q</span><span style="font-family:宋體(tǐ);">两点相连。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;">④ 以点<span style="font-family:Calibri;">6</span><span style="font-family:宋體(tǐ);">為(wèi)圆心,</span><span style="font-family:Calibri;">1</span><span style="font-family:宋體(tǐ);">~</span><span style="font-family:Calibri;">2</span><span style="font-family:宋體(tǐ);">弦長(cháng)為(wèi)半径画圆弧与</span><span style="font-family:Calibri;">Qf</span><span style="font-family:宋體(tǐ);">圆弧相交于点</span><span style="font-family:Calibri;">5</span><span style="font-family:宋體(tǐ);">,用(yòng)直線(xiàn)把</span><span style="font-family:Calibri;">5 Q</span><span style="font-family:宋體(tǐ);">两点相连。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;">⑤ 以点<span style="font-family:Calibri;">5</span><span style="font-family:宋體(tǐ);">為(wèi)圆心,</span><span style="font-family:Calibri;">1</span><span style="font-family:宋體(tǐ);">~</span><span style="font-family:Calibri;">2</span><span style="font-family:宋體(tǐ);">弦長(cháng)為(wèi)半径画圆弧与</span><span style="font-family:Calibri;">Qe</span><span style="font-family:宋體(tǐ);">圆弧相交于点</span><span style="font-family:Calibri;">4</span><span style="font-family:宋體(tǐ);">,用(yòng)直線(xiàn)把</span><span style="font-family:Calibri;">4 Q</span><span style="font-family:宋體(tǐ);">两点相连。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;">⑥ 以点<span style="font-family:Calibri;">Q</span><span style="font-family:宋體(tǐ);">為(wèi)圆心,線(xiàn)段</span><span style="font-family:Calibri;">PQ</span><span style="font-family:宋體(tǐ);">為(wèi)半径画圆弧,再以点</span><span style="font-family:Calibri;">4</span><span style="font-family:宋體(tǐ);">為(wèi)圆心,線(xiàn)段</span><span style="font-family:Calibri;">7Q</span><span style="font-family:宋體(tǐ);">為(wèi)半径画圆弧相交于点</span><span style="font-family:Calibri;">S</span><span style="font-family:宋體(tǐ);">,用(yòng)直線(xiàn)把</span><span style="font-family:Calibri;">Q S</span><span style="font-family:宋體(tǐ);">两点相连。再用(yòng)直線(xiàn)把点</span><span style="font-family:Calibri;">4</span><span style="font-family:宋體(tǐ);">与点</span><span style="font-family:Calibri;">S</span><span style="font-family:宋體(tǐ);">相连。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;">⑦ 以点<span style="font-family:Calibri;">S</span><span style="font-family:宋體(tǐ);">為(wèi)圆心,線(xiàn)段</span><span style="font-family:Calibri;">Q4</span><span style="font-family:宋體(tǐ);">為(wèi)半径画圆弧(以下称</span><span style="font-family:Calibri;">S4</span><span style="font-family:宋體(tǐ);">圆弧),再以点</span><span style="font-family:Calibri;">S</span><span style="font-family:宋體(tǐ);">為(wèi)圆心,直線(xiàn)</span><span style="font-family:Calibri;">f</span><span style="font-family:宋體(tǐ);">半径,画圆弧(以下称</span><span style="font-family:Calibri;">Sf</span><span style="font-family:宋體(tǐ);">圆弧)。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;">⑧ 以点<span style="font-family:Calibri;">4</span><span style="font-family:宋體(tǐ);">為(wèi)圆心,</span><span style="font-family:Calibri;">1</span><span style="font-family:宋體(tǐ);">~</span><span style="font-family:Calibri;">2</span><span style="font-family:宋體(tǐ);">弦長(cháng)為(wèi)半径画圆弧与</span><span style="font-family:Calibri;">Sf</span><span style="font-family:宋體(tǐ);">圆弧相交于点</span><span style="font-family:Calibri;">3</span><span style="font-family:宋體(tǐ);">,用(yòng)直線(xiàn)把</span><span style="font-family:Calibri;">3 S</span><span style="font-family:宋體(tǐ);">两点相连。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;">⑨ 以点<span style="font-family:Calibri;">3</span><span style="font-family:宋體(tǐ);">為(wèi)圆心,</span><span style="font-family:Calibri;">1</span><span style="font-family:宋體(tǐ);">~</span><span style="font-family:Calibri;">2</span><span style="font-family:宋體(tǐ);">弦長(cháng)為(wèi)半径画圆弧与</span><span style="font-family:Calibri;">Sf</span><span style="font-family:宋體(tǐ);">圆弧相交于点</span><span style="font-family:Calibri;">2</span><span style="font-family:宋體(tǐ);">,用(yòng)直線(xiàn)把</span><span style="font-family:Calibri;">2 S</span><span style="font-family:宋體(tǐ);">两点相连。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;">⑩ 以点<span style="font-family:Calibri;">2</span><span style="font-family:宋體(tǐ);">為(wèi)圆心,</span><span style="font-family:Calibri;">1</span><span style="font-family:宋體(tǐ);">~</span><span style="font-family:Calibri;">2</span><span style="font-family:宋體(tǐ);">弦長(cháng)為(wèi)半径画圆弧与</span><span style="font-family:Calibri;">S4</span><span style="font-family:宋體(tǐ);">圆弧相交于点</span><span style="font-family:Calibri;">1</span><span style="font-family:宋體(tǐ);">,用(yòng)直線(xiàn)把</span><span style="font-family:Calibri;">1 S</span><span style="font-family:宋體(tǐ);">两点相连。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;">4.<span style="font-family:宋體(tǐ);">以点</span><span style="font-family:Calibri;">4</span><span style="font-family:宋體(tǐ);">為(wèi)圆心,点</span><span style="font-family:Calibri;">O</span><span style="font-family:宋體(tǐ);">、</span><span style="font-family:Calibri;">4</span><span style="font-family:宋體(tǐ);">之间的距离為(wèi)半径画圆弧(以下称</span><span style="font-family:Calibri;">O4</span><span style="font-family:宋體(tǐ);">圆弧),再以点</span><span style="font-family:Calibri;">S</span><span style="font-family:宋體(tǐ);">為(wèi)圆心,</span><span style="font-family:Calibri;">O Q</span><span style="font-family:宋體(tǐ);">两点的長(cháng)度為(wèi)半径(即是</span><span style="font-family:Calibri;">1/2</span><span style="font-family:宋體(tǐ);">边長(cháng))画圆弧与</span><span style="font-family:Calibri;">O4</span><span style="font-family:宋體(tǐ);">圆弧相交于点</span><span style="font-family:Calibri;">T</span><span style="font-family:宋體(tǐ);">,用(yòng)直線(xiàn)把</span><span style="font-family:Calibri;">S T</span><span style="font-family:宋體(tǐ);">两点相连,再用(yòng)直線(xiàn)把点</span><span style="font-family:Calibri;">1</span><span style="font-family:宋體(tǐ);">与点</span><span style="font-family:Calibri;">T</span><span style="font-family:宋體(tǐ);">相连。(步骤相对应</span><span style="font-family:Calibri;">1-4</span><span style="font-family:宋體(tǐ);">)</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;">5.<span style="font-family:宋體(tǐ);">用(yòng)線(xiàn)段把</span><span style="font-family:Calibri;">1 2 3 4 5 6 7</span><span style="font-family:宋體(tǐ);">依次连接,即得</span><span style="font-family:Calibri;">1/2</span><span style="font-family:宋體(tǐ);">展开图。(步骤相对应</span><span style="font-family:Calibri;">1-4</span><span style="font-family:宋體(tǐ);">)</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;"><span style="font-family:宋體(tǐ);"><span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;">6.<span style="font-family:宋體(tǐ);">如要完整展开图即可(kě)按以上步骤连续把另一半展开图画出(步骤相对应</span><span style="font-family:Calibri;">1-5</span><span style="font-family:宋體(tǐ);">)</span></span></span></span> </p> <p style="margin:0pt;"> <span style="font-family:Calibri;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-font-kerning:1.0000pt;mso-fareast-font-family:宋體(tǐ);mso-bidi-font-family:&quot;Times New Roman&quot;;">&nbsp;</span> </p>

天圆地方不锈钢钣金放样下料方法

1.先实际尺寸画出侧视图和俯视图,然后把俯视图上的1/4圆弧等分(fēn)成3份。再把分(fēn)出的各点(1234)用(yòng)直線(xiàn)(abcd)F点相连。(步骤相对应1-1图与1-2图)

2.再画一条直線(xiàn),取一点I,量取高度尺寸以I点為(wèi)起点在直線(xiàn)上标注一点J。然后过I点画一条与其垂直相交線(xiàn),量取直線(xiàn)a的長(cháng)度以I点為(wèi)起点在線(xiàn)上标注一点K,再量取直線(xiàn)b長(cháng)度以I点為(wèi)起点在直線(xiàn)标注一点L 。用(yòng)直線(xiàn)eK J两点相连,再用(yòng)直線(xiàn)fL J两点相连 。(步骤相对应1-3图)

3.① 以方头一边的長(cháng)度画出一条P Q直線(xiàn),找出P Q直線(xiàn)中心点O画一条与其垂直相交線(xiàn)。

② 以点Q為(wèi)圆心,直線(xiàn)e為(wèi)半径(以下称Qe圆弧)在垂直相交線(xiàn)上画圆弧相交于点7,用(yòng)直線(xiàn)把7 Q两点相连。

③ 以点Q為(wèi)圆心,直線(xiàn)f為(wèi)半径画圆弧(以下称Qf圆弧)。再量取俯视图中的点1与点2之间的弦長(cháng)(以下称12弦長(cháng))為(wèi)半径,点7為(wèi)圆心画圆弧相交于点6,用(yòng)直線(xiàn)把6 Q两点相连。

④ 以点6為(wèi)圆心,12弦長(cháng)為(wèi)半径画圆弧与Qf圆弧相交于点5,用(yòng)直線(xiàn)把5 Q两点相连。

⑤ 以点5為(wèi)圆心,12弦長(cháng)為(wèi)半径画圆弧与Qe圆弧相交于点4,用(yòng)直線(xiàn)把4 Q两点相连。

⑥ 以点Q為(wèi)圆心,線(xiàn)段PQ為(wèi)半径画圆弧,再以点4為(wèi)圆心,線(xiàn)段7Q為(wèi)半径画圆弧相交于点S,用(yòng)直線(xiàn)把Q S两点相连。再用(yòng)直線(xiàn)把点4与点S相连。

⑦ 以点S為(wèi)圆心,線(xiàn)段Q4為(wèi)半径画圆弧(以下称S4圆弧),再以点S為(wèi)圆心,直線(xiàn)f半径,画圆弧(以下称Sf圆弧)。

⑧ 以点4為(wèi)圆心,12弦長(cháng)為(wèi)半径画圆弧与Sf圆弧相交于点3,用(yòng)直線(xiàn)把3 S两点相连。

⑨ 以点3為(wèi)圆心,12弦長(cháng)為(wèi)半径画圆弧与Sf圆弧相交于点2,用(yòng)直線(xiàn)把2 S两点相连。

⑩ 以点2為(wèi)圆心,12弦長(cháng)為(wèi)半径画圆弧与S4圆弧相交于点1,用(yòng)直線(xiàn)把1 S两点相连。

4.以点4為(wèi)圆心,点O4之间的距离為(wèi)半径画圆弧(以下称O4圆弧),再以点S為(wèi)圆心,O Q两点的長(cháng)度為(wèi)半径(即是1/2边長(cháng))画圆弧与O4圆弧相交于点T,用(yòng)直線(xiàn)把S T两点相连,再用(yòng)直線(xiàn)把点1与点T相连。(步骤相对应1-4

5.用(yòng)線(xiàn)段把1 2 3 4 5 6 7依次连接,即得1/2展开图。(步骤相对应1-4

6.如要完整展开图即可(kě)按以上步骤连续把另一半展开图画出(步骤相对应1-5