# US 10,118,267 B2 · Machine tool with a machine rack constructed of structural parts > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,118,267 B2 - Document ID: US10118267B2 - Status: Granted - Kind: B2 - Application number: 14/624,034 - Filed: 2015-02-17 - Published: 2015-08-20 - Granted: 2018-11-06 - Earliest claimed: 2014-02-17 - Assignees: Deckel Maho Pfronten GmbH - Applicants: DECKEL MAHO Pfronten GmbH - Inventors: Hans Gronbach - Web page: https://patentgrep.com/patent/US10118267B2 ## CPC - B23Q 11/128: {for cooling frame parts} - B23Q 11/141: {using a closed fluid circuit for cooling or heating} - B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT ## Abstract Provided is a machine tool with a machine rack constructed of structural parts and components mounted thereon, the components including functional components. The functional components generate heat during the operation of the machine tool which is input into the structural parts and/or the components by heat transport. The machine tool may also include a flow channel system disposed on the structural parts and/or the components of the machine tool in which a tempering medium is circulated such that the heat generated by the functional components is distributed in the machine rack and/or the components as a result of the passage of the tempering medium. ## Claims ### Claim 1 A machine tool comprising: a machine rack constructed of structural parts that have components mounted thereon, wherein the components include functional components configured to generate heat during operation of the machine tool which is input into the structural parts and/or the components by heat transport; and a flow channel system having first and second flow channels: wherein the flow channel system is disposed in first areas and second areas spaced from the first areas on the structural parts and/or the components of the machine tool wherein a heat input into the second areas generated by the functional components is less than a heat input into the first areas and a liquid is circulated in the flow channel system such that the heat generated by the functional components is distributed in the machine rack and/or the components as a result of passage of the liquid so as to equalize the temperature gradient in the machine tool exclusively by circulating the liquid in the flow channel system, and wherein the flow channels of the flow channel system are hollow profiles and said hollow profiles are disposed directly on a surface of the components of the machine tool. ### Claim 2 (depends on 1) The machine tool according to claim 1, wherein the flow channel system is disposed on the structural parts and/or the components of the machine tool such that tilts and/or displacements of the structural parts and/or the components are prevented. ### Claim 3 (depends on 1) The machine tool according to claim 1, wherein the flow channel system comprises flow channels that are configured as cooling profiles and the cooling profile includes at least a feed channel and a return channel for receiving the liquid. ### Claim 4 (depends on 3) The machine tool according to claim 3, wherein the feed channel is connected to the return channel in a conducting manner such that the liquid is redirected. ### Claim 5 (depends on 3) The machine tool according to claim 3, wherein the feed channel is connected to the return channel via a plate welded to the cooling profile, the plate having a milled track for redirecting the feed into the return. ### Claim 6 (depends on 3) The machine tool according to claim 3, wherein the cooling profiles are fixed onto the components of the machine tool with screws. ### Claim 7 (depends on 1) The machine tool according to claim 1, wherein the flow channel system comprises flow channels that are configured as pipes, the pipes being fixed in grooves of the machine tool. ### Claim 8 (depends on 7) The machine tool according to claim 7, wherein the pipes are fixed in the grooves via fixing lids. ### Claim 9 (depends on 7) The machine tool according to claim 7, wherein the pipes of the flow channels are made of copper. ### Claim 10 (depends on 1) The machine tool according to claim 1, wherein the flow channel system comprises flow channels that are bores in the components and/or the structural parts of the machine tool. ### Claim 11 (depends on 1) The machine tool according to claim 1, wherein the flow channel system comprises flow channels that are disposed in a spindle core and in a spindle bearing. ### Claim 12 (depends on 1) The machine tool according to claim 1, the machine tool further comprising a machine bed and a machine post, and the flow channel system comprising flow channels that are disposed on an upper side and a lower side along edges of the machine bed and on an upper side and a lower side along edges of the post. ### Claim 13 (depends on 1) The machine tool according to claim 1, wherein a pump for regulating a volume flow of the liquid is set such that a differential temperature of the liquid in various areas of the flow channel system is limited to no more than 3° C. ### Claim 14 (depends on 1) The machine tool according to claim 1, further comprising a first temperature sensor and at least one second temperature sensor for sensing a temperature gradient, the first temperature sensor being provided in an area of the functional components and the at least one second temperature sensor being provided in an area without functional components on the machine tool. ### Claim 15 (depends on 14) The machine tool according to claim 14, further comprising a regulation and control unit that is set such that a volume flow of the liquid is regulated via power of a pump such that a differential temperature between the first and the second temperature sensor is limited to no more than 3° C. ### Claim 16 (depends on 1) The machine tool according to claim 1, wherein the hollow profiles are rectangular hollow profiles which are separate parts from the components of the maching tool. ### Claim 17 (depends on 1) The machine tool according to claim 1, wherein a pump is provided for regulating a volume flow of the liquid in the flow channels such that a differential temperature of the liquid in various areas of the flow channel system is no more than a predetermined temperature, without using a refrigerating machine. ### Claim 18 (depends on 1) The machine tool according to claim 1, wherein the hollow profiles are attached to an outer surface of the components of the machine tool. ### Claim 19 (depends on 1) A method for tempering the machine tool according to claim 1, comprising: equalizing the temperature gradient in the machine tool exclusively by circulating a liquid in the flow channel system. ### Claim 20 (depends on 19) The method for tempering a machine tool according to claim 19, further comprising regulating a volume flow of the liquid in the flow channels via a pump such that a differential temperature of the liquid in various areas of the flow channel system is no more than 3° C.