IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0386882
(2010-07-26)
|
등록번호 |
US-9707647
(2017-07-18)
|
우선권정보 |
DE-10 2009 034 730 (2009-07-24) |
국제출원번호 |
PCT/EP2010/060807
(2010-07-26)
|
§371/§102 date |
20120409
(20120409)
|
국제공개번호 |
WO2011/009962
(2011-01-27)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Franz Haimer Maschinenbau KG
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
2 |
초록
▼
The invention relates to a device for cooling an object that was previously subjected to a heat application, generally a multi-piece composite, particularly in the form of a shrink-fit chuck into which the shank of a tool was chucked or from which it was removed (cooling device), wherein the device
The invention relates to a device for cooling an object that was previously subjected to a heat application, generally a multi-piece composite, particularly in the form of a shrink-fit chuck into which the shank of a tool was chucked or from which it was removed (cooling device), wherein the device comprises a pump, by way of which it generates a carrier gas flow, particularly an air flow, which is charged with a liquid cooling medium, particularly water, so that a coolant flow, the majority of the volume of which consists of the carrier gas, is created, which then spreads over at least the section of the object to be cooled.
대표청구항
▼
1. A cooling device for cooling a shrinking assembly previously subjected to a heat application comprising: a shrink chuck into which a shank of a tool is clamped or from which the shank of the tool was unclamped;a first substantially closed circuit, said first substantially closed circuit comprisin
1. A cooling device for cooling a shrinking assembly previously subjected to a heat application comprising: a shrink chuck into which a shank of a tool is clamped or from which the shank of the tool was unclamped;a first substantially closed circuit, said first substantially closed circuit comprising a pump in the form of a fan, a carrier gas channel interconnecting a pressure side of the pump to a cross flow cooling chamber, and the cross flow cooling chamber connecting to a suction side of the pump for creating a carrier gas flow; anda second substantially closed circuit, said second substantially closed circuit comprising a liquid cooling agent path and said cross flow cooling chamber for circulation of a liquid cooling agent; said first substantially closed circuit and said second substantially closed circuit overlapping at said cross flow cooling chamber, wherein said carrier gas flow and said liquid cooling agent are combined to create a coolant flow mixture;wherein said coolant flow sweeps over at least a section of the shrink chuck to cool said shrink chuck, and wherein downstream of said cross flow cooling chamber, said coolant flow mixture separates to become said carrier gas flow within said first substantially closed circuit and said liquid cooling agent within said second substantially closed circuit. 2. The cooling device according to claim 1, wherein the cooling device has a cooler downstream from an item to be cooled, which extracts from the coolant flow at least a portion of heat that was absorbed by contact with the item to be cooled. 3. The cooling device according to claim 1, wherein the cooling device comprises an injector which is disposed upstream of the cooling chamber and which charges the carrier gas flow with the liquid cooling agent such that the liquid cooling agent has been dispersed in the carrier gas flow uniformly prior to the cooling agent and the carrier gas flow reaching the cooling chamber. 4. The cooling device according to claim 3, wherein—between the injector and the cooling chamber, where the first and second substantially closed circuits overlap—a first guiding device whirls the coolant flow comprising the carrier gas and the liquid cooling agent, imparting a turbulence to the coolant flow, before the coolant flow reaches the cooling chamber. 5. The cooling device according to claim 4, wherein a second guiding device is disposed upstream of the cooling chamber or of an item to be cooled, which shapes the coolant flow and focuses the coolant flow on the item to be cooled. 6. The cooling device according to claim 5, wherein the second guiding device is a nozzle whose outlet cross section is adjustable. 7. The cooling device according to claim 5, wherein a third guiding device, which reduces the size of a free flow cross section between the item to be cooled or a sleeve section and a wall of the cooling chamber, is disposed directly in an area in which the coolant flow impacts the item to be cooled for a first time, wherein the area is a free end of a tool holder's sleeve section to be cooled. 8. The cooling device according to claim 7, wherein the third guiding device is configured to be adjustable such that at least one of the group consisting of: the third guiding device can be moved in its entirety in and contrary to the main flow direction; the free flow cross section enclosed by the third guiding device can be reduced and increased; and the third guiding device's angle of incidence can be changed so that the third guiding device imparts a stronger or weaker turbulence to the coolant flow. 9. The cooling device according to claim 7, wherein the third guiding device is configured such that the coolant flow builds up a back pressure in front of the third guiding device and the pressure is relieved upon passing the third guiding device, and the coolant flow's tendency to absorb heat is increased. 10. The cooling device according to claim 1, wherein the cooling chamber is configured and aligned such that the cooling chamber is capable of accommodating the shrink chuck to be cooled such that the coolant flow impacts the shrink chuck for a first time in an area of a free end of a sleeve section of the shrink chuck and then flows off substantially in a direction towards an end of the shrink chuck that is intended for clamping into a machining tool, with the coolant flow being conducted through the cooling chamber as a down flow. 11. The cooling device according to claim 1, wherein the carrier gas channel comprises a lock part with an insertion opening configured in such a way that the shrink chuck can be pushed through the opening into the carrier gas channel and cooled there as intended; in the process, a part of a workpiece that is not to be cooled directly remains outside the carrier gas channel also during the cooling process; and the part of the workpiece that is not to be cooled directly at least substantially seals the insertion opening when the workpiece is inserted to the maximum extent. 12. The cooling device according to claim 11, wherein a carrier gas outlet, which grasps the cross flow cooling chamber in the manner of a full or at least ¾ ring, and from which a carrier gas flow exits that sweeps over the workpiece's part to be cooled, is provided on a side of the insertion opening that faces the inside of the carrier gas channel, following the insertion opening immediately or at a distance of less than 2 cm. 13. The cooling device according to claim 12, wherein a distributor chamber is provided upstream of the carrier gas outlet, which distributes the carrier gas flow to be guided towards the workpiece's part to be cooled along the circumference of the workpiece to be cooled over the entire carrier gas outlet, with the distributor chamber at the same time being configured as a swirling chamber that intensifies an intermixing of the carrier gas and the cooling mist droplets. 14. The cooling device according to claim 13, wherein a flow cross section, through which the carrier gas flowing from the distributor chamber into the area of the carrier gas outlet has to flow, narrows from the distributor chamber towards an outlet cross section of the carrier gas outlet. 15. The cooling device according to claim 13, wherein the distributor chamber is configured as a circular ring-shaped chamber into which the carrier gas flow enters from a side and in whose center a pipe part is disposed that leads off the carrier gas flow away from the workpiece to be cooled. 16. A method for cooling off an item previously subjected to a heat application, as a multi-part shrinking assembly, using the cooling device of claim 1, comprising: generating the carrier gas flow which is charged with the liquid cooling agent so that, together with the cooling agent, the carrier gas flow forms the coolant flow that is directed onto the item to be cooled;pumping the carrier gas co-forming the mist or the mixture around at a mean speed of >2 m/s in a closed circuit with a directed movement and at an overpressure provided at the pump outlet of 2 m/s in a closed circuit with a directed movement and at an overpressure provided at a pump outlet of <0.5 bar, into which the shrink chuck to be cooled is introduced entirely or partially. 18. The cooling device according to claim 1, wherein the liquid cooling agent consists essentially of water.
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