JPS6374216U - - Google Patents
Info
- Publication number
- JPS6374216U JPS6374216U JP16928586U JP16928586U JPS6374216U JP S6374216 U JPS6374216 U JP S6374216U JP 16928586 U JP16928586 U JP 16928586U JP 16928586 U JP16928586 U JP 16928586U JP S6374216 U JPS6374216 U JP S6374216U
- Authority
- JP
- Japan
- Prior art keywords
- shape
- punch
- diameter
- cold hobbing
- blade
- 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.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims description 5
Landscapes
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Description
第1図は本考案の一実施例である内面加工用ブ
ローチの正面図である。第2図は第1図における
―断面図である。第3図はブローチ削りのみ
でテーパ穴を加工した場合の内周面の形状を示す
断面図である。第4図は本考案の別の実施例の要
部を示す正面図である。第5図は本考案の更に別
の実施例の要部を示す正面図である。第6図は第
5図における上方からの一部を切り欠いた視図で
ある。第7図は本考案の更に別の実施例の要部を
示す正面図である。第8図は第7図における上方
からの視図である。
10:前つかみ部、14:刃部、18,40,
50,60:コールドホビングパンチ、20:後
つかみ部、22:荒刃、24:中仕上げ刃、26
:仕上げ刃、28,42,52,62:外周仕上
げ面。
FIG. 1 is a front view of a broach for internal processing which is an embodiment of the present invention. FIG. 2 is a cross-sectional view of FIG. 1. FIG. 3 is a sectional view showing the shape of the inner peripheral surface when a tapered hole is machined only by broach cutting. FIG. 4 is a front view showing the main parts of another embodiment of the present invention. FIG. 5 is a front view showing the main parts of yet another embodiment of the present invention. FIG. 6 is a partially cutaway view from above in FIG. 5. FIG. 7 is a front view showing the main parts of yet another embodiment of the present invention. FIG. 8 is a view from above in FIG. 10: Front grip part, 14: Blade part, 18, 40,
50, 60: Cold hobbing punch, 20: Rear grip part, 22: Rough blade, 24: Semi-finishing blade, 26
: Finished blade, 28, 42, 52, 62: Finished outer surface.
Claims (1)
けられた刃部と、後つかみ部とを一体的に有し、
被加工物に予め形成された下穴内に前記刃部が前
記前つかみ部側から挿入されることにより、該下
穴の内周面に切削加工を施して所望する内面形状
の内面加工を行うブローチにおいて、 前記刃部と前記後つかみ部との間に、前記所望
する内面形状に対応する外周仕上げ面を有して、
前記刃部による切削加工に連続して塑性加工を行
うコールドホビングパンチを同一軸線上に一体的
に連接するとともに、前記刃部の最大外周形状の
径寸法を該コールドホビングパンチの最小外周形
状の径寸法よりも小さくしたことを特徴とする内
面加工用ブローチ。 (2) 前記所望する内面形状はテーパ角度が6°
以下のテーパ形状であり、前記コールドホビング
パンチの外周仕上げ面は該テーパ形状と略同一形
状を成しているとともに、前記刃部の最大外周形
状の径寸法は該コールドホビングパンチの小径側
端部の径寸法よりも小径である実用新案登録請求
の範囲第(1)項に記載の内面加工用ブローチ。 (3) 前記所望する内面形状は円筒形状であり、
前記コールドホビングパンチの外周仕上げ面は軸
心に対して平行であつて且つ横断面形状が該円筒
形状の横断面形状と略同一形状を成しているとと
もに、前記刃部の最大外周形状の径寸法は該コー
ルドホビングパンチの径寸法よりも小径である実
用新案登録請求の範囲第(1)項に記載の内面加工
用ブローチ。[Claims for Utility Model Registration] (1) Integrally includes a front grip part, a blade part provided with a plurality of cutting edges in the axial direction, and a rear grip part,
A broach in which the blade portion is inserted from the front grip side into a prepared hole pre-formed in a workpiece, thereby cutting the inner peripheral surface of the prepared hole to form a desired inner surface shape. having an outer peripheral finished surface corresponding to the desired inner surface shape between the blade portion and the rear gripping portion;
A cold hobbing punch that performs plastic working following cutting by the blade is integrally connected on the same axis, and the diameter of the maximum outer circumference of the blade is determined by the minimum outer circumference of the cold hobbing punch. A broach for internal processing characterized by having a diameter smaller than that of the . (2) The desired inner surface shape has a taper angle of 6°.
The cold hobbing punch has the following tapered shape, and the finished outer peripheral surface of the cold hobbing punch has approximately the same shape as the tapered shape, and the diameter dimension of the maximum outer peripheral shape of the blade portion is on the small diameter side of the cold hobbing punch. The broach for internal processing according to claim (1) of the utility model registration, which has a smaller diameter than the diameter of the end portion. (3) the desired inner surface shape is cylindrical;
The outer circumferential finished surface of the cold hobbing punch is parallel to the axis, and has a cross-sectional shape substantially the same as the cross-sectional shape of the cylindrical shape, and has a maximum outer circumferential shape of the blade portion. The broach for internal processing according to claim (1) of the utility model registration, wherein the diameter dimension is smaller than the diameter dimension of the cold hobbing punch.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16928586U JPS6374216U (en) | 1986-11-04 | 1986-11-04 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16928586U JPS6374216U (en) | 1986-11-04 | 1986-11-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6374216U true JPS6374216U (en) | 1988-05-18 |
Family
ID=31102950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16928586U Pending JPS6374216U (en) | 1986-11-04 | 1986-11-04 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6374216U (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56134126A (en) * | 1980-03-26 | 1981-10-20 | Taiho Kogyo Co Ltd | Broach |
-
1986
- 1986-11-04 JP JP16928586U patent/JPS6374216U/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56134126A (en) * | 1980-03-26 | 1981-10-20 | Taiho Kogyo Co Ltd | Broach |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS6374216U (en) | ||
JPH0387507U (en) | ||
JPS61109603U (en) | ||
CN219074410U (en) | Reverse cutting tool | |
JPS6137456Y2 (en) | ||
JPS6353620U (en) | ||
JPS63140304U (en) | ||
JPS62153014U (en) | ||
JPH0333024U (en) | ||
JPH0212011Y2 (en) | ||
JPH0428919U (en) | ||
JPS62127704U (en) | ||
JPS6265104U (en) | ||
JPS62165804U (en) | ||
JPS6325046Y2 (en) | ||
JPH031717U (en) | ||
JPH0351043Y2 (en) | ||
JPS599770Y2 (en) | Gripping device for cutting tools | |
JPH023314U (en) | ||
JPS6450049U (en) | ||
JPS6386928U (en) | ||
JPS62165812U (en) | ||
JPH0270912U (en) | ||
JPH0463312U (en) | ||
JPS62198012U (en) |