JP2007190842A - 鉛筆芯研磨器 - Google Patents
鉛筆芯研磨器 Download PDFInfo
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- JP2007190842A JP2007190842A JP2006012241A JP2006012241A JP2007190842A JP 2007190842 A JP2007190842 A JP 2007190842A JP 2006012241 A JP2006012241 A JP 2006012241A JP 2006012241 A JP2006012241 A JP 2006012241A JP 2007190842 A JP2007190842 A JP 2007190842A
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- pencil
- polishing
- pencil lead
- lead
- scratch test
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Abstract
【解決手段】本発明は、鉛筆固定部と研磨機構部から成る鉛筆芯研磨器であって、鉛筆固定部と研磨機構部が互いに垂直の位置関係に設けられ、鉛筆固定部と研磨機構部の一方、または両方が可動であることを特徴とする鉛筆芯研磨器であり、鉛筆引っかき試験用鉛筆芯先端の角の曲率半径における研磨毎のバラツキを小さくすることが出来る。このため、鉛筆引っかき試験の再現性が向上し、塗膜の引っかき耐性を正当に評価することが可能となる。
【選択図】 図1
Description
鉛筆固定部20は、底板21に、鉛筆10を乗せる溝を有する下部鉛筆保持部位22、そして下部鉛筆保持部位22に乗せた鉛筆を動かないよう押さえる上部鉛筆保持部位24と、下部鉛筆保持部位22と上部鉛筆保持部位24を固定する固定ネジ25、および鉛筆10の芯の先端と研磨機構部30を直角に当て、研磨による研磨機構部30の移動を制限するストッパー23から成る。下部鉛筆保持部位22、ストッパー23は底板21に固定されている。なお、鉛筆をしっかりと固定させるため、下部鉛筆保持部位22、上部鉛筆保持部位24、固定ネジ25を図1に示すように、2箇所に設置した。
鉛筆芯の先端をストッパー上部面aから研磨する分だけ出た状態で、鉛筆10を鉛筆固定部20に固定する。
3Hの鉛筆について、鉛筆芯研磨器を用いず、鉛筆を持ち、平らな面に置いたJIS R6252に規定する400番の紙やすりに鉛筆芯を目視で垂直に当てながら、鉛筆芯の長さが3mmになるよう、円を描くように、鉛筆芯の先端を研磨した。この方法で五本の鉛筆の芯を研磨した。
図3より、従来の研磨方法で鉛筆芯先端の研磨を行った鉛筆と比較すると、本発明の鉛筆芯研磨器を用いて芯先端の研磨を行った鉛筆芯先端の曲率半径はバラツキが小さいことが確認された。
20…鉛筆固定部
21…底板
22…下部鉛筆保持部位
23…ストッパー
24…上部鉛筆保持部位
25…固定ネジ
30…研磨機構部
31…可動部
32…研磨部
a…ストッパー上部面
b…可動部上部面
c…底板上面
d…ストッパー下部面
e…可動部下部面
A…鉛筆芯先端研磨面
B…鉛筆芯側面
Claims (1)
- 鉛筆を固定する鉛筆固定部と、
鉛筆固定部により固定される鉛筆に対し垂直に設けられた研磨機構部と
を備えた鉛筆芯研磨器であって、
鉛筆固定部と研磨機構部の一方または両方が垂直である位置関係を保ったまま可動可能である
ことを特徴とする鉛筆芯研磨器。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006012241A JP4784313B2 (ja) | 2006-01-20 | 2006-01-20 | 鉛筆芯研磨器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006012241A JP4784313B2 (ja) | 2006-01-20 | 2006-01-20 | 鉛筆芯研磨器 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007190842A true JP2007190842A (ja) | 2007-08-02 |
JP4784313B2 JP4784313B2 (ja) | 2011-10-05 |
Family
ID=38446893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006012241A Expired - Fee Related JP4784313B2 (ja) | 2006-01-20 | 2006-01-20 | 鉛筆芯研磨器 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4784313B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104354507A (zh) * | 2014-10-21 | 2015-02-18 | 顺德工业(江苏)有限公司 | 削笔机进笔孔的挡屑装置 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0273391A (ja) * | 1988-09-09 | 1990-03-13 | Fujitsu Ltd | 多重表示方法 |
-
2006
- 2006-01-20 JP JP2006012241A patent/JP4784313B2/ja not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0273391A (ja) * | 1988-09-09 | 1990-03-13 | Fujitsu Ltd | 多重表示方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104354507A (zh) * | 2014-10-21 | 2015-02-18 | 顺德工业(江苏)有限公司 | 削笔机进笔孔的挡屑装置 |
CN104354507B (zh) * | 2014-10-21 | 2016-05-25 | 顺德工业(江苏)有限公司 | 削笔机进笔孔的挡屑装置 |
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Publication number | Publication date |
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JP4784313B2 (ja) | 2011-10-05 |
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