JPS5828798Y2 - Tools for machining soft elastic bodies - Google Patents

Description

【考案の詳細な説明】 （考案の目的） この考案は弾性係数の小さいコム状の軟質弾性体からな
る丸棒又は円筒状の物体を加工する工具であって、被加
工物を旋盤のような機械に取付けて強制的に回転し突切
りバイトのように工具を送って被加工物を切断する工具
に関するものである。[Detailed description of the invention] (Purpose of the invention) This invention is a tool for machining a round bar or cylindrical object made of a comb-like soft elastic body with a small elastic modulus, and the workpiece is machined using a lathe-like tool. This relates to a tool that is attached to a machine, rotates forcibly, and feeds the tool like a parting tool to cut a workpiece.

そしてその目的とするところは切断速度が大きくかつ加
工精度のよい工具の開発を目的とする。The aim is to develop a tool with high cutting speed and high machining accuracy.

（従来技術） 第１図に示すように、軟質弾性体よりなる丸棒１等を切
断する工具２としては細長い長方形板の先端部３を第２
図のように矢先状に形成し、その周辺に第３図に示すよ
うな両刃４，４を設けたものが用いられ、この工具２を
第１図のように回転を与えた丸棒１の方向に送って不要
な部分５を切断するものである。(Prior art) As shown in FIG.
The tool 2 is shaped like an arrowhead as shown in the figure, and has double edges 4, 4 around it as shown in FIG. The unnecessary portion 5 is cut off by sending it in the direction shown in FIG.

しかし第１図に示すように両刃４，４をくさび状に丸棒
１の中に挿入するため刃面と被加工面との間の摩擦熱が
大きくなり被加工面の熱による変質をさけるため加工速
度を大きくすることができないという問題があった。However, as shown in Fig. 1, since the double-edged blades 4, 4 are inserted into the round bar 1 in a wedge shape, the frictional heat between the blade surface and the workpiece surface becomes large, and it is necessary to avoid deterioration of the workpiece surface due to heat. There was a problem that the machining speed could not be increased.

また不要な部分５が薄片の場合には切断部の切口が大き
く変形するため加工後の切断面の中心部にふくらみが生
じ精度よく加工できないという欠点があった。Further, when the unnecessary portion 5 is a thin piece, the cut end of the cut portion is greatly deformed, resulting in a bulge in the center of the cut surface after processing, which has the disadvantage that accurate processing cannot be achieved.

（考案の構成） この考案は前記の問題点を改良するためになされたもの
であって、細長い長方形板状の切断刃物とその柄部を差
込んで保持するホルダからなり、切断刃物の上縁端部に
尖鋭な片刃を形成し、その片刃に鋭角をもってほぼ垂直
に連なる尖鋭な片平刃を形成し、切断刃物の裏側面が逃
げ面となるようにホルダに差込み用孔を形成したことを
要旨とする加工用工具である。(Structure of the invention) This invention was made to improve the above-mentioned problem, and consists of a long and thin rectangular plate-shaped cutting blade and a holder into which the handle is inserted and held. The main points are that a sharp single blade is formed at the end, a sharp single flat blade is formed at an acute angle and continues almost vertically, and an insertion hole is formed in the holder so that the back side of the cutting blade serves as a clearance surface. This is a machining tool.

以下１実施例を説明すれば本案に係る切断刃物６は第４
図に示すように柄部７と上縁端部に形成した尖鋭な片刃
８を有し、片刃８に鋭角αをもって連なる尖鋭な片平刃
９を形成したものである。To explain one embodiment below, the cutting blade 6 according to the present invention is the fourth embodiment.
As shown in the figure, it has a sharp single edge 8 formed on the handle 7 and the upper edge, and a sharp single flat blade 9 connected to the single edge 8 at an acute angle α.

また本案に係るホルダ１０は第５図及び第６図に示すよ
うに柄部７を挿入する差込み用孔１１を形成している。Further, the holder 10 according to the present invention has an insertion hole 11 into which the handle 7 is inserted, as shown in FIGS. 5 and 6.

そして第５図に示すように切断刃物６の裏側面１２に組
立てたとき密着する差込み用孔１１の壁面１３（第６図
参照）をホルダ１０の送り方向１４に対して角度βだけ
傾けて差込み用孔１１を形成している。Then, as shown in FIG. 5, the wall surface 13 (see FIG. 6) of the insertion hole 11, which comes into close contact with the back surface 12 of the cutting blade 6 when assembled, is tilted by an angle β with respect to the feeding direction 14 of the holder 10, and then inserted. A hole 11 is formed.

また必要により第６図に示すように前記の壁面１３を垂
直面に対して角度γだけ傾けて差込み用孔１１を形成す
る。If necessary, the insertion hole 11 is formed by tilting the wall surface 13 at an angle .gamma. with respect to the vertical plane, as shown in FIG.

なお柄部７をホルダ１０に固着するには第５図又は第６
図に示すように例えばボルト１５を用いて行う。In addition, to fix the handle part 7 to the holder 10, please refer to Fig. 5 or 6.
For example, a bolt 15 is used as shown in the figure.

（考案の作用） 柄部７をホルダ１０に固着した工具を旋盤等の刃物台（
図示略）に取付けるにあたっては切断刃物６の刃先Ｐ（
第４図参照）が第６図に示すように被加工物の回転軸線
１６にほぼ一致するようにする。(Operation of the invention) The tool with the handle 7 fixed to the holder 10 is mounted on the tool rest of a lathe, etc.
When installing the cutting blade 6 on the cutting edge P (not shown),
(see FIG. 4) substantially coincides with the rotational axis 16 of the workpiece as shown in FIG.

そして被加工物を回転しつつ刃物台を送れば片刃８と片
平刃９によって切りさかれて被加工物は切断する。If the tool rest is fed while rotating the workpiece, the workpiece is cut by the single blade 8 and the single flat blade 9.

（考案の効果） この考案においては前記したように切断刃物６の一側面
に片刃８と片平刃９を形成しており、柄部７をホルダ１
０に差込んで固定するようにし、しかも一定の角度β、
γをもって固定も裏側面１２が逃げ面となるようにした
ので、刃面と被加工面との間の摩擦熱が小さくなり加工
速度を太きくすることができ、また精度よく加工できる
利点を有する。(Effect of the invention) In this invention, as described above, a single blade 8 and a single flat blade 9 are formed on one side of the cutting blade 6, and the handle 7 is attached to the holder 1.
0 and fix it at a certain angle β,
Even when fixed with γ, the back surface 12 serves as a relief surface, so the frictional heat between the blade surface and the workpiece surface is reduced, making it possible to increase the machining speed and have the advantage of high precision machining. .

さらに切断刃物６をホルダ１０から分解できるので切断
刃物６の刃面を精確に成形できる利点を有する。Furthermore, since the cutting blade 6 can be disassembled from the holder 10, there is an advantage that the blade surface of the cutting blade 6 can be precisely formed.

【図面の簡単な説明】[Brief explanation of drawings]

第１図と第２図はそれぞれ従来の工具による切断状況を
示す平面図と側面図、第３図は第２図のＡ−Ａ矢視断面
図、第４図は本案に係る切断刃物の斜視図、第５図は本
案に係る工具による切断状況を示す平面図、第６図は第
５図のＢ−Ｂ矢視断面図を示する。 （主要部分の符号の説明）、６・・・・・・切断刃物、
７・・・・・・柄部、８・・・・・・片刃、９・・・・
・・片平刃、１０・・・・・・ホルダ、１１・・・・・
・差込み用孔、１２・・・・・・裏側面、１３・・・・
・・壁面、１４・・・・・・ホルダの送り方向、α・・
・・・・鋭角、β、γ・・・・・・角度。Figures 1 and 2 are a plan view and a side view showing cutting conditions using a conventional tool, respectively, Figure 3 is a sectional view taken along the line A-A in Figure 2, and Figure 4 is a perspective view of the cutting blade according to the present invention. 5 is a plan view showing the state of cutting by the tool according to the present invention, and FIG. 6 is a sectional view taken along the line BB in FIG. 5. (Explanation of symbols of main parts), 6... Cutting knife,
7...Handle, 8...Single edge, 9...
...Single flat blade, 10...Holder, 11...
・Insert hole, 12... Back side, 13...
...Wall surface, 14...Holder feeding direction, α...
...Acute angle, β, γ...Angle.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 細長い長方形板状の切断刃物６とその柄部７を差込んで
保持するホルダ１０からなり、切断刃物６の上縁端部に
尖鋭な片刃８を形成し、その片刃８に鋭角αをもってほ
ぼ垂直に連なる尖鋭な片平刃９を形成し、切断刃物６の
裏側面１２が逃げ面となるように前記ホルダ１０に差込
み用孔１１を差込み用孔１１の壁面１３をホルダ１０の
送り方向１４に対して角度βだけ傾け、かつ垂直面に対
して角度γだけ傾けて設けたことを特徴とする軟質弾性
体加工用工具。It consists of a slender rectangular plate-shaped cutting blade 6 and a holder 10 into which the handle 7 is inserted and held.A sharp single blade 8 is formed at the upper edge of the cutting blade 6, and the single blade 8 has an acute angle α and is approximately perpendicular to the cutting blade 6. The insertion hole 11 is formed in the holder 10 so that the back surface 12 of the cutting blade 6 serves as a clearance surface, and the wall surface 13 of the insertion hole 11 is aligned with respect to the feeding direction 14 of the holder 10. A tool for machining a soft elastic body, characterized in that the tool is tilted by an angle β with respect to a vertical plane, and is tilted by an angle γ with respect to a vertical plane.