Broaching cutter
US-2016250702-A1 · Sep 1, 2016 · US
Helical broach
US2016001384A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016001384-A1 |
| Application number | US-201414651395-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 20, 2014 |
| Priority date | Feb 14, 2013 |
| Publication date | Jan 7, 2016 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
The finishing part ( 4 ) of this helical broach ( 1 ) is formed by a first shell ( 20 ) and a second shell ( 30 ) which are divided in the axial direction, and is obtained by forming a first finishing blade ( 50 ), which comprises a prescribed gear tooth helix angle (α) end a first blade groove helix angle (β 1 ), on the aforementioned first shell ( 20 ) and forming a second finishing blade ( 60 ), which comprises the aforementioned prescribed gear tooth helix angle (α) and a second blade groove helix angle (β 2 ) which differs from the aforementioned first blade groove helix angle (β 1 ) on the aforementioned second shell ( 30 ).
First claim
Opening claim text (preview).
1 . A helical broach comprising: a cylindrical shell in which finishing blades having a predetermined gear tooth helix angle are formed on an outer peripheral side, wherein the shell includes a first shell and a second shell which are divided in an axial direction, in the first shell, a first finishing blade having the gear tooth helix angle and a first blade groove helix angle is formed, and in the second shell, a second finishing blade having the gear tooth helix angle and a second blade groove helix angle which is different from the first blade groove helix angle is formed. 2 . The helical broach according to claim 1 , wherein the first finishing blade cuts one tooth surface along a tooth lead in a piece to be cut, and the second finishing blade cuts the other tooth surface along the tooth lead in the piece to be cut. 3 . The helical broach according to claim 1 , wherein both of a rake angle of the first finishing blade and a rake angle of the second finishing blade are an acute angle. 4 . The helical broach according to claim 2 , wherein both of a rake angle of the first finishing blade and a rake angle of the second finishing blade are an acute angle.
Assignees
Inventors
Classifications
having inserted cutting edges · CPC title
for cutting helical grooves · CPC title
- B23F21/26Primary
Broaching tools · CPC title
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- What does patent US2016001384A1 cover?
- The finishing part ( 4 ) of this helical broach ( 1 ) is formed by a first shell ( 20 ) and a second shell ( 30 ) which are divided in the axial direction, and is obtained by forming a first finishing blade ( 50 ), which comprises a prescribed gear tooth helix angle (α) end a first blade groove helix angle (β 1 ), on the aforementioned first shell ( 20 ) and forming a second finishing blade ( 6…
- Who is the assignee on this patent?
- Mitsubishi Heavy Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification B23F21/26. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Jan 07 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).