CA2616233C - Shaped inserts with increased retention force - Google Patents
Shaped inserts with increased retention force Download PDFInfo
- Publication number
- CA2616233C CA2616233C CA2616233A CA2616233A CA2616233C CA 2616233 C CA2616233 C CA 2616233C CA 2616233 A CA2616233 A CA 2616233A CA 2616233 A CA2616233 A CA 2616233A CA 2616233 C CA2616233 C CA 2616233C
- Authority
- CA
- Canada
- Prior art keywords
- insert
- grip
- coating
- grip region
- titanium nitride
- 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.)
- Expired - Fee Related
Links
Landscapes
- Drilling Tools (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Physical Vapour Deposition (AREA)
- Pens And Brushes (AREA)
Abstract
A shaped insert that includes a top portion, and a grip length, wherein the grip length is modified to have a non-uniform cross sectional area is disclosed. In another case, a shaped insert includes a top portion, and a grip length, wherein the grip length is modified such that the insert is non-cylindrical. In another case, a shaped insert includes a top portion, and a grip length, wherein the grip length is coated in a non-uniform manner.
Claims (10)
1. An insert for a drill bit, comprising:
a top portion; and a grip length, comprising a grip region wherein the grip region is coated in a non-uniform manner.
a top portion; and a grip length, comprising a grip region wherein the grip region is coated in a non-uniform manner.
2. The insert of claim 1, wherein a coating comprises a boride, a nitride, or a carbide of a group IVA, VA, or VI transition metal (Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W), or more than one of the foregoing.
3. The insert of claim 2, wherein the coating is titanium nitride.
4. The insert of claim 3, wherein the titanium nitride is deposited on the insert by physical vapor deposition.
5. The insert of any one of claims 1 to 4, wherein the cross-sectional area of the coated grip region is decreased over at least a portion of the grip region.
6. The insert of claim 4, wherein the grip region of the coated insert is non-circular.
7. A method of forming a shaped insert, comprising:
forming an insert comprising a top portion and a grip length; and coating the insert in a non-uniform manner, wherein a coating comprises a boride, a nitride, or a carbide of a group IVA, VA, or VI transition metal (Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W), or more than one of the foregoing wherein the insert is inserted into a substantially uniform pocket.
forming an insert comprising a top portion and a grip length; and coating the insert in a non-uniform manner, wherein a coating comprises a boride, a nitride, or a carbide of a group IVA, VA, or VI transition metal (Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W), or more than one of the foregoing wherein the insert is inserted into a substantially uniform pocket.
8. The method of claim 7, wherein the non-uniform coating is titanium nitride.
9. The method of claim 8, further comprising depositing the titanium nitride on the insert by physical vapor deposition.
10. The method of claim 7 further comprising inserting the shaped insert into a substantially cylindrical insert pocket of a drill bit.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US49486703P | 2003-08-13 | 2003-08-13 | |
| US60/494,867 | 2003-08-13 | ||
| US10/917,229 | 2004-08-12 | ||
| US10/917,229 US7416035B2 (en) | 2003-08-13 | 2004-08-12 | Shaped inserts with increased retention force |
| CA002477673A CA2477673C (en) | 2003-08-13 | 2004-08-16 | Shaped inserts with increased retention force |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002477673A Division CA2477673C (en) | 2003-08-13 | 2004-08-16 | Shaped inserts with increased retention force |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2616233A1 CA2616233A1 (en) | 2005-02-13 |
| CA2616233C true CA2616233C (en) | 2011-03-29 |
Family
ID=39190510
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2616233A Expired - Fee Related CA2616233C (en) | 2003-08-13 | 2004-08-16 | Shaped inserts with increased retention force |
| CA2616245A Expired - Fee Related CA2616245C (en) | 2003-08-13 | 2004-08-16 | Shaped inserts with increased retention force |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2616245A Expired - Fee Related CA2616245C (en) | 2003-08-13 | 2004-08-16 | Shaped inserts with increased retention force |
Country Status (1)
| Country | Link |
|---|---|
| CA (2) | CA2616233C (en) |
-
2004
- 2004-08-16 CA CA2616233A patent/CA2616233C/en not_active Expired - Fee Related
- 2004-08-16 CA CA2616245A patent/CA2616245C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2616245A1 (en) | 2005-02-13 |
| CA2616245C (en) | 2011-08-09 |
| CA2616233A1 (en) | 2005-02-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20160816 |