US1413161A - Draw-in chuck - Google Patents
Draw-in chuck Download PDFInfo
- Publication number
- US1413161A US1413161A US388739A US38873920A US1413161A US 1413161 A US1413161 A US 1413161A US 388739 A US388739 A US 388739A US 38873920 A US38873920 A US 38873920A US 1413161 A US1413161 A US 1413161A
- Authority
- US
- United States
- Prior art keywords
- draw
- chuck
- casing
- work
- draw bar
- 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 - Lifetime
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
- B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
- B23B31/26—Chucks characterised by features relating primarily to remote control of the gripping means using mechanical transmission through the working-spindle
-
- 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
- Y10T279/17—Socket type
- Y10T279/17411—Spring biased jaws
- Y10T279/17529—Fixed cam and moving jaws
-
- 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
- Y10T279/3425—Sliding cam chuck actuator
Definitions
- This invention relates to a draw-in chuck and particularly to certain improvements by which such chucks are better adapted for holding work which is easily distorted.
- one embodiment of our invention provides a yielding connection to the draw bar by which only a pre-determined pressure may be transmitted to the work.
- FIG. 1 is a longitudinal view of a chuck embodying our invention
- Fig. 2 1s a transverse sectional elevation taken along the line 2-2 in Fig. 1;
- Fig. 3 is a side elevation of the spring plate.
- a spindle 10 supporting a head 11 having a conical recess 12 at the outer end thereof.
- a work-holding member 13 comprising a plurality of spring jaws 14 and having a conical outer surface fitting the conical recess 12.
- a draw bar 15 is secured to the member 13 and extends rearward through the spindle 10.
- a grooved collar 16 is mounted to slide on the outside of the spindle 10 and may be moved axially by a yoke 17 on a hand lever 18.
- the draw bar 15 is threaded at its rear end to receive an adjusting nut 20 and lock nut 21.
- the rear end of the spindle 10 is also threaded tb receive a collar 22 having slotted lugs or projections 23 in which levers 24 are pivoted.
- a spring plate or disc 25 is positioned on the draw bar 15 by the nuts 20 and 21 and is engaged by the cam-shaped rear ends of the levers 24.
- the oppositeends of the levers contact with the conical end 26 of the grooved collar 16.
- the levers 24 are swung on their pivots and transmit pressure through the disc 25 to the nut 20 and draw bar 15. As the pressure is wholly transmitted through the spring plate, it cannot exceed the pressure which will cause the plate to bend or buckle.
- he amount of pressure to be transmitted may be regulated by adjusting the nuts 20 and 2l, it being evident that the pressure maybe reduced by slight additional separation of the disc 25 and levers 24.
- This form of chuck is found particularly serviceable in internal grinding machines, wheremuch of the work is of limited thickness or is of such construction that it is easily distorted.
- a draw-in chuck comprising a casing, a work-holding member fitting within said casing, a draw bar, for said member and manual means to draw sai-d member into said casing to grip the work, said means including a spring disc mounted on said draw bar and engaged near its outer edge by other parts of said manual means mounted in bearings xed on said casing.
- a draw-in chuck comprising a casing, a
- said means including a spring disc mounted on said draw bar anden aged near its outer endge by other parts o said manual means mounted in bearings fixed on said casing, and devices for adjusting said disc on said draw bar.
- a draw-in chuck comprising a casing, a Work-holding member fitting within said casing, a draw bar for said member, and means to apply yielding pressure to said bar to draw said member into said casing to grip the Work, said means including a pair of levers pivoted at points fixed in relation to v10 said casing, a sleeve slidably mounted and
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
Description
J. N. HEALD AND A. M. DRAKE.
DRAW-IN CHUCK.
APPLICATION F|LD1uNE14,192o.
ITS z5 2F Patented Apr. 18, 1922.
UNITED STATES PATENT OFFICE.
JAMES N. HEALD AND ALBEN M. BRAKE, OF WORCESTER, MASSACHUSETTS,
ASSIGNORS TO HEALD MACHINE COMPANY, 0F WORCESTER, MASSACHU- SETTS, A CORPORATION OF MASSACHUSETTS.
DRAW-IN CHUCK.
To all whom t may concern.'
Be it known that we, JAMES N. HEALD and ALDEN M. DRAKE, both citizens of the United States, and both residing at Worcester, m the county of Worcester and State of Massachusetts, have invented a new and use-ful Draw-In Chuck, of which the following is a specification.
This invention relates to a draw-in chuck and particularly to certain improvements by which such chucks are better adapted for holding work which is easily distorted.
It is the general object of our invention to provide a draw-in chuck by which the pressure of the jaws upon the work may be controlled and limited, and in the preferred form may be adjusted as desired.
With this general object in view, one embodiment of our invention provides a yielding connection to the draw bar by which only a pre-determined pressure may be transmitted to the work.
Our invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.
A preferred form of our invention is shown in the drawings, in which Fig. 1 is a longitudinal view of a chuck embodying our invention;
Fig. 2 1s a transverse sectional elevation taken along the line 2-2 in Fig. 1; and
Fig. 3 is a side elevation of the spring plate.
or disc.
Referring to the drawings, we have shown a spindle 10 supporting a head 11 having a conical recess 12 at the outer end thereof. We have also shown a work-holding member 13 comprising a plurality of spring jaws 14 and having a conical outer surface fitting the conical recess 12. A draw bar 15 is secured to the member 13 and extends rearward through the spindle 10. A grooved collar 16 is mounted to slide on the outside of the spindle 10 and may be moved axially by a yoke 17 on a hand lever 18. j
The draw bar 15 is threaded at its rear end to receive an adjusting nut 20 and lock nut 21. The rear end of the spindle 10 is also threaded tb receive a collar 22 having slotted lugs or projections 23 in which levers 24 are pivoted.
All of the parts thus far described may be Specification of Letters Patent.
Patented Apr. 18, 1922.
- Application led June 14, 1920. Serial No.'388,739.
of any usual construction and form no part of our invention.
A spring plate or disc 25 is positioned on the draw bar 15 by the nuts 20 and 21 and is engaged by the cam-shaped rear ends of the levers 24. The oppositeends of the levers contact with the conical end 26 of the grooved collar 16. When the collar 16 is moved rearward or to the left in Fig. 1 to tighten the chuck, the levers 24 are swung on their pivots and transmit pressure through the disc 25 to the nut 20 and draw bar 15. As the pressure is wholly transmitted through the spring plate, it cannot exceed the pressure which will cause the plate to bend or buckle.
It is thus impossible for the workman to place excessive strain upon the work by aplying increased pressure to the lever 18.
he amount of pressure to be transmitted may be regulated by adjusting the nuts 20 and 2l, it being evident that the pressure maybe reduced by slight additional separation of the disc 25 and levers 24.
This form of chuck is found particularly serviceable in internal grinding machines, wheremuch of the work is of limited thickness or is of such construction that it is easily distorted.
Having thus described our invention, it will be evident that changes and modifications can be made therein by those skilled in the art within the spirit and scope thereof as set forth in the claims and we do not wish to be otherwise limited to the details herein disclosed, but what we claim is 1. A draw-in chuck comprising a casing, a work-holding member fitting within said casing, a draw bar, for said member and manual means to draw sai-d member into said casing to grip the work, said means including a spring disc mounted on said draw bar and engaged near its outer edge by other parts of said manual means mounted in bearings xed on said casing.
2. A draw-in chuck comprising a casing, a
work-holding member fitting within saidl casing, a draw bar for said member, and manual means to draw said member into said casing to grip the work, said means including a spring disc mounted on said draw bar anden aged near its outer endge by other parts o said manual means mounted in bearings fixed on said casing, and devices for adjusting said disc on said draw bar..
3. A draw-in chuck comprising a casing, a Work-holding member fitting within said casing, a draw bar for said member, and means to apply yielding pressure to said bar to draw said member into said casing to grip the Work, said means including a pair of levers pivoted at points fixed in relation to v10 said casing, a sleeve slidably mounted and
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US388739A US1413161A (en) | 1920-06-14 | 1920-06-14 | Draw-in chuck |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US388739A US1413161A (en) | 1920-06-14 | 1920-06-14 | Draw-in chuck |
Publications (1)
Publication Number | Publication Date |
---|---|
US1413161A true US1413161A (en) | 1922-04-18 |
Family
ID=23535302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US388739A Expired - Lifetime US1413161A (en) | 1920-06-14 | 1920-06-14 | Draw-in chuck |
Country Status (1)
Country | Link |
---|---|
US (1) | US1413161A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2462936A (en) * | 1946-03-12 | 1949-03-01 | Bechler Andre | Gripping device for the bar in turret lathes |
US2491358A (en) * | 1946-09-09 | 1949-12-13 | Warner Swasey Co | Machine tool |
DE876499C (en) * | 1942-04-01 | 1953-05-15 | Schuette Fa Alfred H | Device for actuating the collet in single or multi-spindle turning and turret turning arms |
DE1068529B (en) * | 1955-06-17 | 1959-11-05 | The Birmingham Small· Arms Company Limited, Birmingham (Großbritannien) | Device for operating the collet chuck or the chuck in lathes |
FR2316030A1 (en) * | 1975-06-20 | 1977-01-28 | Wickman Mach Tool Sales Ltd | MECHANISM FOR MOVING THE MACHINING SPINDLE CLAMP SLEEVE, ON A LATHE |
US4856797A (en) * | 1986-09-01 | 1989-08-15 | Gerhard Rall | Chuck for gripping a workpiece |
-
1920
- 1920-06-14 US US388739A patent/US1413161A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE876499C (en) * | 1942-04-01 | 1953-05-15 | Schuette Fa Alfred H | Device for actuating the collet in single or multi-spindle turning and turret turning arms |
US2462936A (en) * | 1946-03-12 | 1949-03-01 | Bechler Andre | Gripping device for the bar in turret lathes |
US2491358A (en) * | 1946-09-09 | 1949-12-13 | Warner Swasey Co | Machine tool |
DE1068529B (en) * | 1955-06-17 | 1959-11-05 | The Birmingham Small· Arms Company Limited, Birmingham (Großbritannien) | Device for operating the collet chuck or the chuck in lathes |
FR2316030A1 (en) * | 1975-06-20 | 1977-01-28 | Wickman Mach Tool Sales Ltd | MECHANISM FOR MOVING THE MACHINING SPINDLE CLAMP SLEEVE, ON A LATHE |
US4856797A (en) * | 1986-09-01 | 1989-08-15 | Gerhard Rall | Chuck for gripping a workpiece |
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