Clamping unit, in particular for use in a machining center, or a turning or milling center
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B23Q-003/06
B23Q-001/26
B23Q-001/00
B23B-031/28
출원번호
US-0459669
(2014-08-14)
등록번호
US-9821423
(2017-11-21)
우선권정보
EP-13180673 (2013-08-16)
발명자
/ 주소
Deininger, Harald
Maurer, Eckhard
출원인 / 주소
SMW-AUTOBLOK SPANNSYSTEME GMBH
대리인 / 주소
Foley & Lardner LLP
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
A clamping unit, in particular for use in a machining center, or a turning or milling center, wherein the clamping unit comprises an external housing (12), preferably having a cylindrical basic design, an internal housing (15) accommodated in the external housing (12), and an internal cylinder (11)
A clamping unit, in particular for use in a machining center, or a turning or milling center, wherein the clamping unit comprises an external housing (12), preferably having a cylindrical basic design, an internal housing (15) accommodated in the external housing (12), and an internal cylinder (11) that is retained in the internal housing (15) such that it can be displaced in a vertical adjustment direction A when in the operating state, which is designed for transferring a pressure or tensile force for clamping purposes, wherein the internal housing (15) is supported in the external housing (12) by means of springs (13, 14), and is supported with respect to the external housing (12) such that it can be displaced in the adjustment direction A, and thus forms a spring force storage unit (21), and wherein an electric motor (16) is disposed inside the clamping unit, integrated therein, preferably encompassed by the external housing (12), furthermore, preferably accommodated inside the internal housing (15), in order to apply a force in the adjustment direction A to the internal cylinder (11) via drive means (17-20) disposed therein.
대표청구항▼
1. A clamping unit for use in a machining center, or a turning or milling center, comprising: an external housing,an internal housing accommodated in the external housing, andan internal cylinder held in the internal housing, the internal cylinder being displaceable in a first vertical adjustment di
1. A clamping unit for use in a machining center, or a turning or milling center, comprising: an external housing,an internal housing accommodated in the external housing, andan internal cylinder held in the internal housing, the internal cylinder being displaceable in a first vertical adjustment direction in an operating state, the operating state being designed for transferring a pressure or tensile force for clamping purposes,wherein the internal housing is supported in the external housing by springs, and the internal housing being supported with respect to the external housing such that the internal housing is displaceable in the first vertical adjustment direction, thereby forming a spring force storage unit, andwherein an electric motor is disposed inside the clamping unit, integrated therein, accommodated inside the internal housing, in order to apply a force in the first vertical adjustment direction to the internal cylinder via a drive means disposed therebetween. 2. The clamping unit according to claim 1, wherein the drive means comprises at least one of a sleeve-shaped screw drive and a planetary roller screw drive, the drive means configured to transfer a rotational movement of the electric motor into an axial motion applied to the internal cylinder. 3. The clamping unit according to claim 1, wherein the drive means comprises a worm drive having a worm provided at a motor side of the worm drive proximate the electric motor, and the worm drive further having a worm gear provided at an output side of the worm drive, the output side opposite the motor side. 4. The clamping unit according to claim 3, wherein the worm gear is connected in a torque-locking manner to a first sub-component of a sleeve-shaped screw drive, or of a planetary roller screw drive, wherein the first sub-component is provided with an internal thread. 5. The clamping unit according to claim 4, wherein the worm gear is designed as a single unit together with the first sub-component. 6. The clamping unit according to claim 3, wherein the worm gear comprises a circumferential upper bearing surface and a circumferential lower bearing surface. 7. The clamping unit according to claim 6, wherein each of the circumferential upper bearing surface and circumferential lower bearing surface support the worm gear in relation to the internal housing in at least one of a radial direction and an axial direction via ball bearings. 8. The clamping unit according to claim 3, wherein the worm of the worm drive is aligned with a first axis, the first axis running orthogonally to the first vertical adjustment direction. 9. The clamping unit according to claim 8, wherein an output shaft of the electric motor is aligned orthogonally to the first axis of the worm in the worm drive. 10. The clamping unit according to claim 1, wherein the electric motor has an output shaft, disposed orthogonally to the first vertical adjustment direction. 11. The clamping unit according to claim 1, wherein the internal housing is supported in the external housing by a plurality of springs the plurality of springs including first and second springs, the first spring being a first spring type and the second spring being a second spring type. 12. The clamping unit according to claim 11, wherein the first spring type is a spiral spring and the second spring type is a gas spring. 13. The clamping unit according to claim 1, wherein the internal cylinder has at least one section having a cross-section deviating from a rotational shape. 14. The clamping unit according to claim 13, wherein the cross-section of the internal cylinder is an elliptical cross-section, the elliptical cross-section being shaped to fix the internal cylinder in place, such that the internal cylinder cannot rotate in relation to the external housing. 15. The clamping unit according to claim 13, wherein a distal section of the internal cylinder has a cross-section deviating from the rotational shape. 16. The clamping unit according to claim 1, further comprising a lock-off device for locking off the drive means when the electric motor is at rest. 17. The clamping unit according to claim 16, wherein the lock-off device comprises an axially displaceable pin, which can be brought into engagement, or out of engagement, respectively, by means of an actuating device, with a lock-off recess in the drive means. 18. The clamping unit according to claim 17, wherein the lock-off recess in the drive means is allocated to a shaft projection on a worm. 19. The clamping unit according to claim 16, further comprising a lock-off sensor configured to check whether the lock-off device is in a lock-off setting. 20. The clamping unit according to claim 1, further comprising sensors configured to perform at least one of indicating and detecting of an adjustment position of the internal housing inside the external housing. 21. The clamping unit according to claim 20, wherein counterforce retained in the spring force storage unit is determined based on a detecting of the adjustment position. 22. The clamping unit according to claim 1, further comprising sensors configured to detect rotational movement of at least one of the electric motor, an output shaft, and the drive means. 23. The clamping unit according to claim 22, wherein a sensor is configured to detect a rotational rate of at least one of the electric motor, the output shaft, and the drive means. 24. The clamping unit according to claim 1, wherein the internal housing comprises a housing base element and a housing cover, the housing base element and the housing cover being attached to one another by releasable connecting elements. 25. The clamping unit according to claim 1, wherein the external housing is cylindrical.
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이 특허에 인용된 특허 (5)
Lunn Garfield R. (Amherstburg CAX), Clamp mechanism.
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