<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly;"><font size="3"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">一、判断题(共</span><span lang="EN-US">15</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">题。将判断结果填入答题卡中,正确的填“√”,错误的填“×”。每题</span><span lang="EN-US">2</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">分,满分</span><span lang="EN-US">30</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">分。)</span><span lang="EN-US"><p></p></span></b></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly;"><font size="3"><span lang="EN-US">1</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、在相同齿数的情况下,直齿圆柱齿轮模数</span><span lang="EN-US">m</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">越大,分度园直径越大。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 15.75pt; TEXT-INDENT: -15.75pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly; mso-char-indent-count: -1.5;"><font size="3"><span lang="EN-US">2</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、塑料制品在充模流动方向上和垂直流动方向上的收缩率是一样的。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 15.75pt; TEXT-INDENT: -15.75pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly; mso-char-indent-count: -1.5;"><font size="3"><span lang="EN-US">3</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、曲肘式注塑机和直压式注塑机相比较,前者提供的锁模力较大,后者防止动模板变形的能力较大。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly; tab-stops: 31.5pt;"><font size="3"><span lang="EN-US">4</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、成型薄型较宽的透明制品,常采用扇形浇口,可以减小制品的内应力。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly; tab-stops: 31.5pt;"><font size="3"><span lang="EN-US">5</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、潜伏式浇口应该设计成尖圆锥形。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 15.75pt; TEXT-INDENT: -15.75pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly; mso-char-indent-count: -1.5; tab-stops: 31.5pt;"><font size="3"><span lang="EN-US">6</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、热流道系统主要由热流道板、热嘴、温控器组成。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 15.75pt; TEXT-INDENT: -15.75pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly; mso-char-indent-count: -1.5; tab-stops: 31.5pt;"><font size="3"><span lang="EN-US">7</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、排气钢是一种新型的模具钢种,利用它可以改善模具困气的情况。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 15.75pt; TEXT-INDENT: -15.75pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly; mso-char-indent-count: -1.5; tab-stops: 31.5pt;"><font size="3"><span lang="EN-US">8</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、浇口应该设置在塑料制品比较薄的地方,这是为了便于补偿制品冷却收缩。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 15.75pt; TEXT-INDENT: -15.75pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly; mso-char-indent-count: -1.5; tab-stops: 31.5pt;"><font size="3"><span lang="EN-US">9</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、组合式型腔侧壁挠度与侧壁厚度的平次方成反比。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 15.75pt; TEXT-INDENT: -15.75pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly; mso-char-indent-count: -1.5; tab-stops: 31.5pt;"><font size="3"><span lang="EN-US">10</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、气体辅助注塑成型(</span><span lang="EN-US">GAIM</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">)通常使用的气体是氮气。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 15.75pt; TEXT-INDENT: -15.75pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly; mso-char-indent-count: -1.5; tab-stops: 31.5pt;"><font size="3"><span lang="EN-US">11</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、有限元法是目前模具</span><span lang="EN-US">CAE</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">中的基本方法。</span><span lang="EN-US"><span style="mso-tab-count: 1;"> </span></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly;"><font size="3"><span lang="EN-US">12</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、使用液压抽芯机构,抽芯距离大,动作时间灵活。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 15.75pt; TEXT-INDENT: -15.75pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly; mso-char-indent-count: -1.5; tab-stops: 31.5pt;"><font size="3"><span lang="EN-US">13</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、电火花加工中,相同条件下,使用石墨电极的电极损耗大于紫铜电极。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 15.75pt; TEXT-INDENT: -15.75pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly; mso-char-indent-count: -1.5;"><font size="3"><span lang="EN-US">14</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、车削细长轴时</span><span lang="EN-US">,</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">为了减小径向切削力</span><span lang="EN-US">,</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">避免工件产生弯曲变形应减小车刀主偏角。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 15.75pt; TEXT-INDENT: -15.75pt; LINE-HEIGHT: 18pt; mso-line-height-rule: exactly; mso-char-indent-count: -1.5; tab-stops: 31.5pt;"><font size="3"><span lang="EN-US">15</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、蚀纹(皮纹)加工是一种电化学加工方法。</span></font></p> |