Drill apparatus and drill chuck

Patent metadata

Field	Value
Publication number	US-9486858-B2
Application number	US-201414566894-A
Country	US
Kind code	B2
Filing date	Dec 11, 2014
Priority date	Dec 11, 2013
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

A drill chuck and a drill apparatus is provided that includes a drilling machine, which has a motor and a machine spindle that is supported in rotary fashion in a machine housing. The a drill chuck is connected to the machine spindle and can be moved between a clamping configuration and a drilling configuration and has a clamping sleeve and a chuck body in which clamping jaws are movably guided by a threaded connection. When a sliding sleeve is moved relative to the chuck body between a first position that corresponds to the clamping configuration and a second position that corresponds to the drilling configuration, a flow of force traveling from the motor via the machine spindle to the threaded connection is shifted to a flow of force traveling from the motor via the machine spindle to the chuck body and vice versa.

First claim

What is claimed is:

1. A drill apparatus including a drilling machine, the drill apparatus comprising:
a motor and a machine spindle that is supported in rotary fashion in a machine housing;
a drill chuck connected to the machine spindle and is adapted to be moved between a clamping configuration and a drilling configuration;
a clamping sleeve; and
a chuck body in which clamping jaws are movably guided by a threaded connection,
wherein the chuck body of the drill chuck is supported on the machine spindle in a rotary fashion,
wherein, when a sliding sleeve is moved relative to the chuck body between a first position that corresponds to the clamping configuration and a second position that corresponds to the drilling configuration, a flow of force traveling from the motor via the machine spindle to the threaded connection is shifted to a flow of force traveling from the motor via the machine spindle to the chuck body and vice versa, and
wherein the chuck body has at least one first detent seat corresponding to the clamping configuration and at least one second detent seat corresponding to the drilling configuration, wherein a control cam is arranged between the first and second detent seats, and wherein the clamping sleeve has at least one detent element that corresponds to the detent seats.

2. The drill apparatus according to claim 1 , wherein the sliding sleeve is connected to the chuck body in a rotationally fixed fashion and is supported so that the sliding sleeve moves axially relative to the chuck body.

3. The drill apparatus according to claim 1 , wherein the sliding sleeve is axially secured to the clamping sleeve and in a first position, is rotationally fixed while in a second position, is supported so that the sliding sleeve is able to rotate relative to the machine housing.

4. The drill apparatus according to claim 2 , wherein the sliding sleeve has at least one first indent for producing a rotationally fixed coupling with at least one corresponding first coupling element of the machine housing.

5. The drill apparatus according to claim 2 , wherein the sliding sleeve has at least one second indent for producing a rotationally fixed coupling with at least one corresponding second coupling element of the machine spindle.

6. The drill apparatus according to claim 1 , wherein a roller bearing or a slide bearing is provided for supporting the chuck body on the machine spindle in a rotary fashion.

7. The drill apparatus according to claim 1 , wherein the threaded connection comprises a clamping thread of the clamping jaws, which have round jaws, and a threaded ring that engages with the clamping thread.

8. The drill apparatus according to claim 7 , wherein a planetary gear is arranged between the threaded ring and the machine spindle and comprises a ring gear connected to the threaded ring in a rotationally fixed fashion, at least one planet gear arranged in the chuck body in rotary fashion, and a sun gear supported on the machine spindle in a rotationally fixed fashion.

9. The drill apparatus according to claim 1 , wherein on a side oriented away from the machine spindle, the clamping sleeve is axially supported by a spring element.

10. The drill apparatus according to claim 9 , wherein for axial support of the clamping sleeve, a support ring is provided that is acted on by the spring element.

11. The drill apparatus according to claim 1 , wherein on a side of the chuck body oriented away from the machine spindle, a protective cap is provided, which has an annular collar that is recessed at least in a drilling configuration into an annular recess of the clamping sleeve.

12. The drill apparatus according to claim 1 , wherein a sensor is provided, which sends a signal to the drilling machine as soon as the clamping sleeve is in the first position.

13. The drill apparatus according to claim 1 , wherein at least one spring is provided for adjusting a switching torque.

14. A drill chuck for a drill apparatus that has a machine spindle and is movable between a clamping configuration and a drilling configuration and has a clamping sleeve in a chuck body in which clamping jaws are movably guided by a threaded connection, wherein, when a sliding sleeve is moved relative to the chuck body between a first position that corresponds to the clamping configuration and a second position that corresponds to the drilling configuration, a flow of force traveling from the machine spindle to the threaded connection is shifted to a flow of force traveling from the machine spindle to the chuck body and vice versa, and
wherein the chuck body has at least one first detent seat corresponding to the clamping configuration and at least one second detent seat corresponding to the drilling configuration, wherein a control cam is arranged between the first and second detent seats, and wherein the clamping sleeve has at least one detent element that corresponds to the detent seats.

15. The drill chuck according to claim 14 , wherein an impact mechanism is provided for impact drilling.

Assignees

• Roehm Gmbh

Inventors

• Schenk Peter
• Hengsberger Patrick

Classifications

• B23B2260/07

  Gears · CPC title

• B23B31/123 Primary

  with locking arrangements (locking arrangements for chucks with simultaneously-acting jaws moving radially actuated by one or more spiral grooves B23B31/16041) · CPC title

• B23B31/1238

  Jaws movement actuated by a nut with conical screw-thread · CPC title

• Y10T279/17632

  Conical sleeve · CPC title

• B23B2231/06

  Chucks for handtools having means for opening and closing the jaws using the driving motor of the handtool · CPC title