JPH0243120U - - Google Patents
Info
- Publication number
- JPH0243120U JPH0243120U JP12073988U JP12073988U JPH0243120U JP H0243120 U JPH0243120 U JP H0243120U JP 12073988 U JP12073988 U JP 12073988U JP 12073988 U JP12073988 U JP 12073988U JP H0243120 U JPH0243120 U JP H0243120U
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- cutting blade
- thread
- full thread
- center
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010008 shearing Methods 0.000 claims 2
Landscapes
- Shearing Machines (AREA)
- Accessories And Tools For Shearing Machines (AREA)
Description
第１図は本考案になるボルト切断機用切断刃の
実施例を示す斜視図、第２図は同切断刃の平面図
と正面図、第３図は同切断刃で全ねじを切断する
状態を示した断面図、第４図は同切断刃で切断し
た全ねじの破断面を示す斜視図、第５図は同切断
刃を用いるボルト切断機の外観を示す斜視図、第
６図は従来の切断刃でクリアランスを無くした時
の切断の状態を示す断面図であり、第７図は第６
図の状態で得られた破断面の斜視図である。第８
図は従来の切断刃で、クリアランスを付けた時の
切断の状態を示す断面図であり、第９図はそれで
得られた破断面の斜視図である。
図において、１は切断刃、１ａは切断刃、１ｂ
は切断刃、２はめねじ、３は切断刃取付ねじ、４
は円弧溝、５は全ねじ、６ａはクラツク、６ｂは
クラツク、７は全ねじ破断面、８はねじ山切断部
、９は瘤状段差、１０はバリ、１１は歯車箱、１
２はクランク、１３はアーム、１４はカツタホル
ダ、１５はカツタホルダ、１６は吊下げフツク、
１７はハンドル、１８は電動機、１９は取付ねじ
である。
Fig. 1 is a perspective view showing an embodiment of the cutting blade for a bolt cutting machine according to the present invention, Fig. 2 is a plan view and a front view of the cutting blade, and Fig. 3 is a state in which the cutting blade is used to cut a full thread. 4 is a perspective view showing the fractured surface of a complete screw cut with the same cutting blade, FIG. 5 is a perspective view showing the external appearance of a bolt cutting machine using the same cutting blade, and FIG. 6 is a conventional one. FIG. 7 is a cross-sectional view showing the state of cutting when the clearance is eliminated with the cutting blade of
It is a perspective view of the fracture surface obtained in the state shown in the figure. 8th
The figure is a cross-sectional view showing the state of cutting when a clearance is provided using a conventional cutting blade, and FIG. 9 is a perspective view of the fractured surface obtained using the conventional cutting blade. In the figure, 1 is a cutting blade, 1a is a cutting blade, 1b
is the cutting blade, 2 is the female thread, 3 is the cutting blade mounting screw, 4
is a circular arc groove, 5 is a full thread, 6a is a crack, 6b is a crack, 7 is a broken surface of a full thread, 8 is a thread cutting part, 9 is a knob-shaped step, 10 is a burr, 11 is a gear box, 1
2 is a crank, 13 is an arm, 14 is a cutter holder, 15 is a cutter holder, 16 is a hanging hook,
17 is a handle, 18 is an electric motor, and 19 is a mounting screw.
Claims (1)
に揺動する一対の切断刃で剪断により切断する切
断機の切断刃で、切断される全ねじに接する内周
面に該全ねじと等ピツチの中心線で半割りにした
形状のねじ面を刻設した切断刃において、該切断
刃の側面に該めねじの谷径よりも幅挟で、かつ、
中央で深く両サイドで浅い円弧溝を設けることに
より、上下一対の相対する切断刃の間のクリアラ
ンスが、全ねじ剪断厚みの厚い中央切断部では大
きく、全ねじ剪断厚みの薄いサイド切断部では小
さく、又、全ねじのねじ山切断部ではゼロとなる
ようにしたことを特徴とするボルト切断機の切断
刃。 A cutting blade of a cutting machine that cuts a bolt such as a full thread whose shaft part is entirely threaded by shearing with a pair of cutting blades that swing up and down. A cutting blade having a threaded surface cut in half along the center line of the pitch, the side surface of the cutting blade having a width smaller than the root diameter of the female thread, and
By providing a circular arc groove that is deep in the center and shallow on both sides, the clearance between the upper and lower pair of opposing cutting blades is large in the center cutting section where the full thread shear thickness is thick, and small in the side cutting section where the full thread shearing thickness is thin. , and a cutting blade for a bolt cutting machine, characterized in that the cutting blade is zero at the thread cutting part of a full thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12073988U JPH0644571Y2 (en) | 1988-09-14 | 1988-09-14 | Cutting blade of bolt cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12073988U JPH0644571Y2 (en) | 1988-09-14 | 1988-09-14 | Cutting blade of bolt cutting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0243120U true JPH0243120U (en) | 1990-03-26 |
| JPH0644571Y2 JPH0644571Y2 (en) | 1994-11-16 |
Family
ID=31367117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12073988U Expired - Lifetime JPH0644571Y2 (en) | 1988-09-14 | 1988-09-14 | Cutting blade of bolt cutting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0644571Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013132743A (en) * | 2011-12-27 | 2013-07-08 | Kamekura Seiki Kk | Screw rod cutting device |
-
1988
- 1988-09-14 JP JP12073988U patent/JPH0644571Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013132743A (en) * | 2011-12-27 | 2013-07-08 | Kamekura Seiki Kk | Screw rod cutting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0644571Y2 (en) | 1994-11-16 |
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