US20030066390A1 - Method for making drill-chuck jaw with hard-metal inserts - Google Patents
Method for making drill-chuck jaw with hard-metal inserts Download PDFInfo
- Publication number
- US20030066390A1 US20030066390A1 US10/267,455 US26745502A US2003066390A1 US 20030066390 A1 US20030066390 A1 US 20030066390A1 US 26745502 A US26745502 A US 26745502A US 2003066390 A1 US2003066390 A1 US 2003066390A1
- Authority
- US
- United States
- Prior art keywords
- jaw
- face
- laser
- insert
- welding
- 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.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
- B23B31/1215—Details of the jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23B2222/28—Details of hard metal, i.e. cemented carbide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/34—Accessory or component
- Y10T279/3462—Jaw insert
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49888—Subsequently coating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49906—Metal deforming with nonmetallic bonding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49982—Coating
- Y10T29/49986—Subsequent to metal working
Definitions
- the present invention relates to drill-chuck jaw. More particularly this invention concern method making such a jaw equipped with one or more hard-metal inserts.
- a standard drill chuck has a body centered on and rotatable about an axis and formed with a plurality of axially extending angled guides angularly spaced about the axis. Respective jaws in these guides can be moved between a forward holding position in which they grip a workpiece and a rear releasing position. Teeth on back edges of the jaws mesh with a threaded ring that is rotated relative to the chuck body to advance and retract the jaws.
- the guides are formed in a sleeve that rotates relative to the chuck body and the teeth on the jaws mesh with a screwthread on the body for similar action.
- Such inserts must be mounted very, very solidly on the chuck jaws. Once installed they must be able to withstand considerable lateral forces as the chuck applies torque to the tool, and they must hold even when the entire tool gets fairly hot as in common machining.
- Another object is the provision of such an improved method of making a drill-chuck jaw which overcomes the above-given disadvantages, that is which is relatively simple and which produces a very strong and hard jaw.
- a drill-chuck jaw is made by first forming an elongated metal body with a toothed back face and a planar front face and thereafter laser-welding an insert to the body on the face. More particularly, after machining the body but before laser-welding the inserts to it, the body is heat-treated and surface hardened.
- the body is tampered.
- this step is also completed before the insert or inserts are laser-welded in place.
- FIGS. 1 and 2 are side views of a drill-chuck jaw according to the invention.
- FIG. 3 is a section taken along line III-III of FIG. 2;
- FIG. 4 is a side view of another jaw
- FIG. 5 is a section taken along line V-V of FIG. 4;
- FIG. 6 is a side view of yet another jaw
- FIG. 7 is a section taken along line VII-VIl of FIG. 5;
- FIGS. 8 and 9 are views like FIG. 7 of further chucks in accordance with the invention.
- FIG. 10 is a block diagram illustrating the method of this invention.
- a drill-chuck jaw 1 is made by first machining a cylindrical steel body or pin so that one side has at one end a row of teeth 2 extending parallel to a center axis 4 of the pin, and then machining at the opposite end, and here on the opposite side, a planar face 3 extending at a small acute angle across the axis 4 . Then the workpiece is heat treated to reduce internal stresses. Subsequently it is surface hardened.
- FIGS. 4 and 5 show how the face 3 is formed with a central longitudinally extending rib 6 that is fitted to a groove 7 in the jaw 5 a.
- the interfit of the formations 6 and 7 ensures perfect positionign of the inserts 5 , making welding them easier.
- FIGS. 6 and 7 the face 3 is formed with a square-section rib 6 b and the jaw 5 b has a square-section groove 7 b complementary to it.
- FIG. 8 shows a semicircular-section rib 6 c and a complementary groove 7 c.
- FIG. 9 the face is formed with a square-section groove 6 d into which the entire insert 5 is set.
Abstract
A drill-chuck jaw is made by first forming an elongated metal body with a toothed back face and a planar front face and thereafter laser-welding an insert to the body on the face. After machining the body but before laser-welding the inserts to it, the body is heat-treated and surface hardened. After the heat-treating and surface-hardening step and before the laser-welding step, the body in tampered.
Description
- The present invention relates to drill-chuck jaw. More particularly this invention concern method making such a jaw equipped with one or more hard-metal inserts.
- A standard drill chuck has a body centered on and rotatable about an axis and formed with a plurality of axially extending angled guides angularly spaced about the axis. Respective jaws in these guides can be moved between a forward holding position in which they grip a workpiece and a rear releasing position. Teeth on back edges of the jaws mesh with a threaded ring that is rotated relative to the chuck body to advance and retract the jaws. Alternately the guides are formed in a sleeve that rotates relative to the chuck body and the teeth on the jaws mesh with a screwthread on the body for similar action.
- Even though the jaws are made of steel, they are typically used to grip tools of similar hardness. Thus it is known to provide special hard-metal, e.g. carbide, inserts in the gripping faces of the jaw to reduce wear of the jaws and thereby prolong the life of the drill or lathe carrying the chuck.
- Such inserts must be mounted very, very solidly on the chuck jaws. Once installed they must be able to withstand considerable lateral forces as the chuck applies torque to the tool, and they must hold even when the entire tool gets fairly hot as in common machining.
- In commonly owned U.S. Pat. No. 6,427,555 we disclose such a jaw-making method comprising the steps of forming an elongated metal body with a toothed back face and a front face, machining a longitudinally extending groove having sides and a floor in the front face, forming on each of the groove sides a pair of inwardly projecting and longitudinally spaced bumps with the bumps on one of the groove sides transversely aligned with the bumps on the other of the groove sides, fitting into the groove between the pairs of retaining bumps a hard-metal insert, and bonding the insert to the body in the groove.
- While this procedure produces a very strong jaw with a very solidly mounted insert, it is quite difficult and complex. Machining the groove and providing the holding bumps adds two steps to the manufacturing process. Furthermore once the insert is thus mounted it is standard to subject the entire jaw, with insert, to various heat-treating steps that in fact reduce the hardness of the insert and/or jaw. Furthermore the presence of solder or adhesive between the insert and the body face it is mounted to, normally the floor of the groove, requires that the insert be machined after attachment of the inserts to guarantee perfect positioning of the insert faces.
- It is therefore an object of the present invention to provide an improved method of making a drill-chuck jaw.
- Another object is the provision of such an improved method of making a drill-chuck jaw which overcomes the above-given disadvantages, that is which is relatively simple and which produces a very strong and hard jaw.
- According to the invention a drill-chuck jaw is made by first forming an elongated metal body with a toothed back face and a planar front face and thereafter laser-welding an insert to the body on the face. More particularly, after machining the body but before laser-welding the inserts to it, the body is heat-treated and surface hardened.
- Thus with this method it is normally only necessary to form a simple planar face on the jaw. This is a relatively easy procedure completed quickly and very accurately by milling. By not using solder or an adhesive between the insert and the face, positioning will be perfect so that no subsequent machining of the jaw will be necessary. What is more the laser welding operation is so accurate and quick that it introduces no meaningful stresses into the workpiece, so once the insert is lager-welded in place, the workpiece is finished.
- According to the invention, after the heat-treating and surface-hardening step and before the laser-welding step, the body is tampered. Thus this step is also completed before the insert or inserts are laser-welded in place.
- In accordance with another feature of the invention, before the heat-treating and surface-hardening step a longitudinally extending centering formation in formed on the face. Thereafter but before the laser-welding step, the insert is fitted to the formation.
- The above and other objects, features, and advantages will become more readily apparent from the following description, reference being made to the accompanying drawing in which:
- FIGS. 1 and 2 are side views of a drill-chuck jaw according to the invention;
- FIG. 3 is a section taken along line III-III of FIG. 2;
- FIG. 4 is a side view of another jaw;
- FIG. 5 is a section taken along line V-V of FIG. 4;
- FIG. 6 is a side view of yet another jaw;
- FIG. 7 is a section taken along line VII-VIl of FIG. 5;
- FIGS. 8 and 9 are views like FIG. 7 of further chucks in accordance with the invention; and
- FIG. 10 is a block diagram illustrating the method of this invention.
- As seen in FIG. 1 through3 and 10, a drill-
chuck jaw 1 according to the invention is made by first machining a cylindrical steel body or pin so that one side has at one end a row ofteeth 2 extending parallel to acenter axis 4 of the pin, and then machining at the opposite end, and here on the opposite side, aplanar face 3 extending at a small acute angle across theaxis 4. Then the workpiece is heat treated to reduce internal stresses. Subsequently it is surface hardened. - Thereafter hard-
metal inserts 5 are positioned on theface 3 and secured thereto by laser-welds 8. Thus the various treatments are all completed before theseinserts 5 are installed. The laser-welding does not create any significant stresses in the steel of thejaw 1, so that once theinserts 5 are mounted, the jaw is complete. - FIGS. 4 and 5 show how the
face 3 is formed with a central longitudinally extendingrib 6 that is fitted to a groove 7 in the jaw 5 a. The interfit of theformations 6 and 7 ensures perfect positionign of theinserts 5, making welding them easier. - In FIGS. 6 and 7 the
face 3 is formed with a square-section rib 6 b and the jaw 5 b has a square-section groove 7 b complementary to it. FIG. 8 shows a semicircular-section rib 6 c and a complementary groove 7 c. - In FIG. 9 the face is formed with a square-section groove6 d into which the
entire insert 5 is set.
Claims (4)
1. A method of making a drill-chuck jaw comprising the steps of sequentially;
forming an elongated metal body with a toothed back face and a planar front face; and
laser-welding an insert to the body on the face.
2. A method of making a drill-chuck jaw comprising the steps of sequentially:
forming an elongated metal body with a toothed back face and a planar front face;
heat-treating and surface hardening the body; and
laser-welding an insert to the body on the face.
3. The jaw-making method defined in claim 2 , further comprising after the heat-treating and surface-hardening step and before the laser-welding step the step of
tampering the body.
4. The jaw-making method defined in claim 2 , further comprising before the heat-treating and surface-hardening step the steps of
forming a longitudinally extending centering formation on the face, and thereafter but before the laser-welding step;
fitting the insert to the formation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10149957.4A DE10149957B4 (en) | 2001-10-10 | 2001-10-10 | Method for producing clamping jaws |
DE10149957.4 | 2001-10-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20030066390A1 true US20030066390A1 (en) | 2003-04-10 |
Family
ID=7702027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/267,455 Abandoned US20030066390A1 (en) | 2001-10-10 | 2002-10-09 | Method for making drill-chuck jaw with hard-metal inserts |
Country Status (2)
Country | Link |
---|---|
US (1) | US20030066390A1 (en) |
DE (1) | DE10149957B4 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030116925A1 (en) * | 2001-11-24 | 2003-06-26 | Rohm Gmbh | Drill-chuck jaw with hard-metal inserts |
WO2005077577A1 (en) * | 2004-02-11 | 2005-08-25 | Röhm Gmbh | Method for making hard metal inserts such as clamping jaws equipped with clamping blades |
US20070152407A1 (en) * | 2005-12-07 | 2007-07-05 | Rohm Gmbh | Drill chuck |
US20080309029A1 (en) * | 2007-05-31 | 2008-12-18 | Thomas Jay Bodine | Chuck jaw face profile |
US20100066038A1 (en) * | 2008-09-17 | 2010-03-18 | Jacobs Chuck Manufacturing Company | Locking Chuck Jaws |
US20150033524A1 (en) * | 2013-07-30 | 2015-02-05 | Rothenberger Ag | Pressing tool and method for manufacturing a pressing tool |
CN111940998A (en) * | 2019-05-14 | 2020-11-17 | 罗姆股份有限公司 | Clamping jaw, drill chuck and method for manufacturing clamping jaw |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5477021A (en) * | 1990-02-24 | 1995-12-19 | Westfalia Separator | Centrifuge-drum disk |
US5580197A (en) * | 1994-04-02 | 1996-12-03 | Roehm Guenter H | Pneumatically self-clearing chuck |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10008262B4 (en) * | 2000-02-23 | 2007-03-15 | Röhm Gmbh | Method for producing carbide inserts as clamping jaws having chucks for chuck, and correspondingly produced clamping jaws |
-
2001
- 2001-10-10 DE DE10149957.4A patent/DE10149957B4/en not_active Expired - Fee Related
-
2002
- 2002-10-09 US US10/267,455 patent/US20030066390A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5477021A (en) * | 1990-02-24 | 1995-12-19 | Westfalia Separator | Centrifuge-drum disk |
US5580197A (en) * | 1994-04-02 | 1996-12-03 | Roehm Guenter H | Pneumatically self-clearing chuck |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030116925A1 (en) * | 2001-11-24 | 2003-06-26 | Rohm Gmbh | Drill-chuck jaw with hard-metal inserts |
US6883808B2 (en) * | 2001-11-24 | 2005-04-26 | Rohm Gmbh | Drill-chuck jaw with hard-metal inserts |
WO2005077577A1 (en) * | 2004-02-11 | 2005-08-25 | Röhm Gmbh | Method for making hard metal inserts such as clamping jaws equipped with clamping blades |
US7845650B2 (en) * | 2005-12-07 | 2010-12-07 | Rohm Gmbh | Drill chuck |
US20070152407A1 (en) * | 2005-12-07 | 2007-07-05 | Rohm Gmbh | Drill chuck |
US20080309029A1 (en) * | 2007-05-31 | 2008-12-18 | Thomas Jay Bodine | Chuck jaw face profile |
US20100066038A1 (en) * | 2008-09-17 | 2010-03-18 | Jacobs Chuck Manufacturing Company | Locking Chuck Jaws |
US8376371B2 (en) * | 2008-09-17 | 2013-02-19 | Jacobs Chuck Manufacturing Company | Locking chuck jaws |
US8894073B2 (en) * | 2008-09-17 | 2014-11-25 | Apex Brands, Inc. | Locking chuck jaws |
US20150266103A1 (en) * | 2008-09-17 | 2015-09-24 | Apex Brands, Inc. | Locking chuck jaws |
US9662713B2 (en) * | 2008-09-17 | 2017-05-30 | Apex Brands, Inc. | Locking chuck jaws |
US20150033524A1 (en) * | 2013-07-30 | 2015-02-05 | Rothenberger Ag | Pressing tool and method for manufacturing a pressing tool |
US9597722B2 (en) * | 2013-07-30 | 2017-03-21 | Rothenberger Ag | Pressing tool and method for manufacturing a pressing tool |
CN111940998A (en) * | 2019-05-14 | 2020-11-17 | 罗姆股份有限公司 | Clamping jaw, drill chuck and method for manufacturing clamping jaw |
Also Published As
Publication number | Publication date |
---|---|
DE10149957B4 (en) | 2014-06-26 |
DE10149957A1 (en) | 2003-04-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ROHM GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MACK, HANS-DIETER;REEL/FRAME:013378/0007 Effective date: 20021009 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |