초록
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The present disclosure relates to a grinding machine. More particularly, the present disclosure relates to a centerless grinding machine comprising a damping device. The present disclosure also relates to a spindle for a grinding machine, and to a damping device for a spindle of a grinding machine, particularly for a grinding spindle or regulator spindle of a centerless grinding machine, wherein the damping device comprises at least one damping unit including an auxiliary mass section, an elastic section and a damping section, which are integrated in the...
The present disclosure relates to a grinding machine. More particularly, the present disclosure relates to a centerless grinding machine comprising a damping device. The present disclosure also relates to a spindle for a grinding machine, and to a damping device for a spindle of a grinding machine, particularly for a grinding spindle or regulator spindle of a centerless grinding machine, wherein the damping device comprises at least one damping unit including an auxiliary mass section, an elastic section and a damping section, which are integrated in the spindle, and which jointly define a damped vibratory system for increasing the dynamic stiffness of the spindle.
대표
청구항
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1. A centerless grinding machine, comprising: a machine bed,a grinding spindle, that is mounted for rotation relative to the machine bed, coupled to a spindle drive and arranged to receive a grinding wheel,a regulator spindle that is mounted for rotation relative to the machine bed, coupled to a spindle drive and arranged to receive a regulating wheel,a workpiece mount for receiving a to-be-processed workpiece between the grinding spindle and the regulator spindle,wherein the grinding spindle and the regulator spindle are arranged at the machine bed and ...
1. A centerless grinding machine, comprising: a machine bed,a grinding spindle, that is mounted for rotation relative to the machine bed, coupled to a spindle drive and arranged to receive a grinding wheel,a regulator spindle that is mounted for rotation relative to the machine bed, coupled to a spindle drive and arranged to receive a regulating wheel,a workpiece mount for receiving a to-be-processed workpiece between the grinding spindle and the regulator spindle,wherein the grinding spindle and the regulator spindle are arranged at the machine bed and are moveable with respect to one another, andwherein at least one of the grinding spindle and the regulator spindle comprises an integrated damping device, wherein the damping device comprises:at least one damping unit, the at least one damping unit comprising:an auxiliary mass section,an elastic section, anda damping section,wherein the auxiliary mass section, the elastic section and the damping section are integrated in the spindle, andwherein the auxiliary mass section, the elastic section and the damping section jointly form a damped vibratory system. 2. The grinding machine as claimed in claim 1, wherein the at least one of the grinding spindle and the regulator spindle further comprises a first neck and a second neck that define ends of the spindle which are facing away from one another other, wherein the first neck and the second neck are connected to one another via a hollow profile section, and wherein the damping device is accommodated in the hollow profile section between the first neck and the second neck. 3. The grinding machine as claimed in claim 1, wherein the damping device comprises at least one cavity and at least one compensation element, wherein the at least one cavity contains a damping fluid, wherein the damping behavior of the damping device is defined by selecting a viscosity of the damping fluid, and wherein the at least one compensation element is configured for compensating pressure variations and volume variations of the damping fluid in the at least one cavity. 4. A centerless grinding machine comprising a machine bed and at least one spindle mounted for rotation relative to the machine bed, the at least one spindle having a damping device, comprising at least one damping unit, the damping unit comprising an auxiliary mass section, an elastic section and a damping section, wherein the auxiliary mass section, the elastic section and the damping section are integrated in the spindle, and wherein the auxiliary mass section, the elastic section and the damping section jointly form a damped vibratory system. 5. The grinding machine as claimed in claim 4, wherein the damped vibratory system is arranged as a passive damped vibratory system and configured to increase the dynamic stiffness of the spindle. 6. The grinding machine as claimed in claim 4, wherein the damping device is implemented in a grinding spindle or a regulator spindle of a centerless grinding machine. 7. The grinding machine as claimed in claim 4, wherein the auxiliary mass section, the elastic section and the damping section are accommodated in a hollow profile section of the spindle. 8. The grinding machine as claimed in claim 4, wherein the damping section comprises at least one cavity that is fillable with a damping fluid, and wherein the damping behavior of the damping device is defined by selecting a viscosity of the damping fluid. 9. The grinding machine as claimed in claim 8, wherein the damping fluid is a silicone oil, having a kinetic viscosity in the range of about 50 mm2/s to about 1,000 mm2/s. 10. The grinding machine as claimed in claim 8, further comprising at least one compensation element, wherein the at least one compensation element is configured for compensating pressure variations or volume variations of the damping fluid in the at least one cavity. 11. The grinding machine as claimed in claim 10, wherein the at least one compensation element is formed from a cellular rubber elastomer material. 12. The grinding machine as claimed in claim 4, wherein the at least one damping unit comprises a first damping unit and a second damping unit wherein the first damping unit is arranged at first spindle section, wherein the second damping unit is arranged at a second spindle section, and wherein the first damping unit and the second damping unit are axially adjacent one another and facing each other. 13. The grinding machine as claimed in claim 12, further comprising a common damping section for the first damping unit and the second damping unit and extending therebetween, wherein the damping section comprises at least one cavity that is arranged to receive and contain a damping fluid. 14. A centerless grinding machine comprising: a machine bed, and a grinding spindle and a regulator spindle mounted for rotation relative to the machine bed, at least one of the grinding spindle and the regulator spindle being drivable about its longitudinal axis in a rotating fashion, the spindle comprising a damping device comprising at least one damping unit, the damping unit comprising an auxiliary mass section, an elastic section and a damping section, wherein the auxiliary mass section, the elastic section and the damping section are integrated in the spindle, and wherein the auxiliary mass section, the elastic section and the damping section jointly form a damped vibratory system. 15. The grinding machine as claimed in claim 14, further comprising a first neck and a second neck that define ends of the spindle that are facing away from each other, wherein the first neck and the second neck are connected to one another via a hollow profile section, and wherein the damping device is accommodated in the hollow profile section between the first neck and the second neck. 16. The grinding machine as claimed in claim 15, wherein the first neck is associated with a first spindle section, wherein the second neck is associated with a second spindle section, wherein the first spindle section and the second spindle section are mediately connected to one another via the hollow profile section, wherein at least the first spindle section or the second spindle section is provided with, the auxiliary mass section and wherein the auxiliary mass section is surrounded by the hollow profile section. 17. The grinding machine as claimed in claim 16, wherein the auxillary mass section comprises a first auxillary mass section that is integrally formed with the first neck of the first spindle section, the elastic section comprising a first elastic section arranged at the first spindle section, wherein the first elastic section is formed by a material weakening in the first spindle section that is arranged between the first auxiliary mass section and the first neck, and wherein the first elastic section is surrounded by the hollow profile section. 18. The grinding machine as claimed in claim 16, wherein the first spindle section comprises a first auxiliary mass section, wherein the second spindle section comprises a second auxiliary mass section, wherein the first auxiliary mass section is delimited by a first material weakening in the first spindle section that forms a first elastic section, wherein the second auxiliary mass section is delimited by a second material weakening in the second spindle section that forms a second elastic section, wherein the first auxiliary mass section and the first material weakening are formed at a first damping unit, wherein the second auxiliary mass section and the second material weakening are formed at a second damping unit, and wherein the first auxiliary mass section and the second auxiliary mass section are facing each other and are commonly surrounded by the hollow profile section. 19. The grinding machine as claimed in claim 18, wherein the first elastic section is formed by a first groove having a first diameter, wherein the second elastic section is formed by a second groove having a second diameter, and wherein the first diameter and the second diameter differ from one another. 20. The grinding machine as claimed in claim 15, wherein the damping section is arranged as a cavity for containing a damping fluid, wherein the cavity is delimited by the at least one auxiliary mass section and the hollow profile section, wherein at least one inlet opening for the damping fluid is provided in the hollow profile section, and wherein the inlet opening is, in a closed state, sealingly closed.
