CN2218086Y - 椭圆规 - Google Patents

椭圆规 Download PDF

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Publication number
CN2218086Y
CN2218086Y CN 95236464 CN95236464U CN2218086Y CN 2218086 Y CN2218086 Y CN 2218086Y CN 95236464 CN95236464 CN 95236464 CN 95236464 U CN95236464 U CN 95236464U CN 2218086 Y CN2218086 Y CN 2218086Y
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scale
main
pore
position probe
utility
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CN 95236464
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刘汉生
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Abstract

一种椭圆规,包括底板1,在底板1上设有的中间立柱2,在中间立柱2上部装有主标尺5,在主标尺5的前端装有主定位探针9和夹笔器10,在底板1上还设有左,右立柱,在左立柱12上装有左标尺16,在右立柱13上装有右标尺17,在左、右标尺的前端分别设有左、右定位探针,在定位探针上设有细孔和卡线机构,在主定位探针的细孔及左、右定位探针的细孔之间连有细线,本实用新型结构简单,使用方便,所绘制的椭圆十分准确。

Description

椭圆规
本实用新型涉及一种能绘制椭圆的绘图仪器。
目前市面上还没有出现能简单绘制椭圆的仪器,人们绘制椭圆时普遍采用圆规绘制近似的扁圆代替椭圆,这种方法所绘制的椭圆不准确,不是真实的椭圆,并且绘制方法复杂。
本实用新型的目的在于提供一种能绘制椭圆的椭圆规。
本实用新型结构简单,使用方便,所绘制的椭圆十分准确。
下面结合附图对本实用新型作进一步的描述
图1为本实用新型的结构示意图
本实用新型包括底板1,在底板1上设有的中间立柱2,在中间立柱2上部装有其上开有腰形槽7的主标尺5,主标尺5由中间立柱卡压在腰形槽内定位,在主标尺5的前端装有主定位探针9和夹笔器10,在主定位探针上开有细孔,在主标尺5的后部与中间立柱2之间装有拉簧11,在底板1上还设有左立柱12和右立柱13,在左立柱12上装有其上开有腰形槽的左标尺16,在右立拉13上装有其上开有腰形槽的右标尺17,并分别通过固定螺钉18定位,在左、右标尺的前端分别设有左、右定位探针,在定位探针上设有细孔和卡线机构,在主定位探针的细孔及左、右定位探针的细孔之间连有细线。
本实用新型工作原理是利用固定弦长度,保证一动定到两定点间距离不变的机构来实现椭圆的绘制的,
本实用新型的技术方案的基本思想是利用左右标尺的前定位探针为两定点,用主标尺的前定位探针为动点,用连接左右标尺的前定位探针的细线为固定弦长约束主标尺的运动,使主标尺的前定位探针和夹笔器的运动轨迹为椭圆
在使用本实用新型时,首先根据画椭圆的基本条件和要求,如给出的椭圆的长轴和短轴,点画出焦点位置,松开固定螺钉18,移动左、右标尺,使定位探针对准两焦点后,再拧紧固定螺钉18,再将主标尺的主定位针对准短轴的b点,由于弹簧的作用拉紧细线,再在夹笔器上夹上绘图笔,转动主标尺,绘图笔在纸上绘出半边椭圆,同样,将绘图仪转动180度,可画出另外半边椭圆。

Claims (1)

  1. 一种椭圆规,包括底板1,在底板1上设有的中间立柱2,在中间立柱2上部装有其上开有腰形槽7的主标尺5,主标尺5由中间立柱卡压在腰形槽内定位,在主标尺5的前端装有主定位探针9和夹笔器10,在主定位探针上开有细孔,在主标尺5的后部与中间立柱2之间装有拉簧11,在底板1上还设有左立柱12和右立柱13,在左立柱12上装有其上开有腰形槽的左标尺16,在右立柱13上装有其上开有腰形槽的右标尺17,并分别通过固定螺钉18定位,在左、右标尺的前端分别设有左、右定位探针,在定位探针上设有细孔和卡线机构,在主定位探针的细孔及左、右定位探针的细孔之间连有细线。
CN 95236464 1995-03-28 1995-03-28 椭圆规 Expired - Fee Related CN2218086Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 95236464 CN2218086Y (zh) 1995-03-28 1995-03-28 椭圆规

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 95236464 CN2218086Y (zh) 1995-03-28 1995-03-28 椭圆规

Publications (1)

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CN2218086Y true CN2218086Y (zh) 1996-01-24

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CN 95236464 Expired - Fee Related CN2218086Y (zh) 1995-03-28 1995-03-28 椭圆规

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CN (1) CN2218086Y (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103522277A (zh) * 2013-10-31 2014-01-22 肖叶 一种木工切割锯的辅助标记装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103522277A (zh) * 2013-10-31 2014-01-22 肖叶 一种木工切割锯的辅助标记装置

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