Claims
- 1. A chuck for a rotary tool, said chuck comprising:
- a receiving portion;
- said receiving portion being configured to receive and surround at least a portion of a chucking shank;
- a radial through-hole;
- said radial through-hole being disposed in said receiving portion configured to surround a chucking shank;
- a clamping arrangement;
- said clamping arrangement comprising:
- a clamping screw;
- said clamping screw being configured to be screwed into
- said radial through-hole to apply pressure to a chucking shank;
- a clamping member;
- said clamping member being disposed in said radial through-hole;
- said clamping member comprising a base portion, which base portion is configured to be disposed to face a chucking shank and is configured to a shape of a chucking shank to apply two-dimensional pressure; and
- said clamping member comprising a radial projection;
- said radial through-hole comprising an inner section and an outer section;
- said inner section of said radial through-hole being configured to be disposed between said outer section of said radial through-hole and a chucking shank;
- said inner section of said radial through-hole being narrower in diameter than said outer section of said radial through-hole;
- said radial projection being configured to form an axial stop;
- an elastically-compressible resilient element;
- said resilient element being disposed between said radial projection of said clamping member and said inner section of said radial through-hole;
- said resilient element being configured to be compressed upon screwing in of said clamping member by said clamping screw; and
- said resilient element being configured to apply a return force to said clamping member to move said clamping member in the direction opposite the screw-in direction upon a release of pressure on said resilient element from said clamping member.
- 2. The chuck according to claim 1, wherein said radial projection of said clamping member is formed by an annular flange.
- 3. The chuck according to claim 1, wherein:
- said inner section comprises a ring-shaped collar;
- said ring-shaped collar comprises an opening; and
- said opening is disposed to open toward the interior of said chuck.
- 4. The chuck according to claim 3, wherein said ring-shaped collar is substantially concentric with respect to the axis of said radial through-hole.
- 5. The chuck according to claim 1, wherein:
- said resilient element is substantially ring-shaped;
- said resilient element comprises an elastic rubber material; and
- said resilient element is configured and disposed to lie against said radial projection of said clamping member.
- 6. The chuck according to claim 5, wherein:
- said resilient element is an O-ring;
- said clamping member comprises a cross-sectionally circular sheath portion; and
- said O-ring is configured and disposed to surround said sheath portion of said clamping member.
- 7. The chuck according to claim 1, wherein:
- said radial through hole comprises an annular groove; and
- said resilient element is inserted in said annular groove.
- 8. The chuck according to claim 6, wherein said resilient element applies radially inward initial tension to said clamping member.
- 9. The chuck according to claim 7, wherein said resilient element applies radially inward initial tension to said clamping member.
- 10. The chuck according to claim 1, wherein said base portion of said clamping member which applies pressure to a chucking shank is provided with an indentation to form a contact surface adapted to the shape of the surface of a chucking shank.
- 11. The chuck according to claim 10, wherein the diameter of curvature of said base portion of said clamping member is slightly smaller than the nominal diameter of a corresponding chucking shank.
- 12. The chuck according to claim 1, wherein:
- said clamping screw comprises an axial opening;
- said axial opening forms a hexagon socket;
- said clamping member comprises an end face disposed on an end opposite said base portion; and
- said end face comprises a slit-like opening.
- 13. A chuck for a rotary tool, said chuck comprising:
- a receiving portion;
- said receiving portion being configured to receive and surround at least a portion of a chucking shank;
- a radial through-hole;
- said radial through-hole being disposed in said receiving portion configured to surround a chucking shank;
- a clamping arrangement;
- said clamping arrangement comprising:
- a clamping screw portion;
- said clamping screw portion being configured to be screwed into said radial through-hole to apply pressure to a chucking shank;
- a clamping member;
- said clamping member being disposed in said radial through-hole; and
- said clamping member comprising a radial projection;
- said radial through-hole comprising an inner section and an outer section;
- said inner section of said radial through-hole being configured to be disposed between said outer section of said radial through-hole and a chucking shank;
- said inner section of said radial through-hole being narrower in diameter than said outer section of said radial through-hole;
- said radial projection being configured to form an axial stop;
- an elastically-compressible resilient element;
- said resilient element being disposed between said radial projection of said clamping member and said inner section of said radial through-hole;
- said resilient element being configured to be compressed upon screwing in of said clamping member by said clamping screw portion; and
- said resilient element being configured to apply a return force to said clamping member to move said clamping member in the direction opposite the screw-in direction upon a release of pressure on said resilient element from said clamping member.
Priority Claims (1)
Number |
Date |
Country |
Kind |
197 17 005 |
Apr 1997 |
DEX |
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CONTINUING APPLICATION DATA
This application is a Continuation-In-Part application of the International Application No. PCT/EP98/01645, filed on Mar. 20, 1998, which claims priority from Federal Republic of Germany Patent Application No. 197 17 005.6, filed on Apr. 23, 1997. International Application No. PCT/EP98/01645 was pending as of the filing date of the above-cited application. The United States was an elected state in International Application No. PCT/EP98/01645.
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
PCTEP9801645 |
Mar 1998 |
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