# US 11,441,688 B2 · Component of hydraulics, arrangement having a portion of the component, and method for joining together the component > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,441,688 B2 - Document ID: US11441688B2 - Status: Granted - Kind: B2 - Application number: 17/022,937 - Filed: 2020-09-16 - Published: 2021-04-01 - Granted: 2022-09-13 - Earliest claimed: 2019-09-27 - Assignees: Robert Bosch GmbH - Applicants: Robert Bosch GmbH - Inventors: Daniel Endrich - Web page: https://patentgrep.com/patent/US11441688B2 ## CPC - F16K 11/07: with cylindrical slides - B23K 20/12: the heat being generated by friction; Friction welding - B29C 65/645: {using friction or ultrasonic vibrations} - B33Y 80/00: Products made by additive manufacturing - F15B 13/0402: {for linearly sliding valves, e.g. spool valves} - B22F 5/10: of articles with cavities or holes, not otherwise provided for in the preceding subgroups - B23K 20/122: {using a non-consumable tool, e.g. friction stir welding} - B29L 2031/7506: {Valves} - F15B 13/02: Fluid distribution or supply devices characterised by their adaptation to the control of servomotors - F15B 2013/008: {Throttling member profiles} - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} - B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - F15B: SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR - B22F: WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract A component of hydraulics, via which a pressure medium connection or flow can be controlled, includes a first portion which is additively manufactured at least in part and on which there is formed at least one control geometry for controlling the pressure medium connection or flow, and a second portion joined thereto. ## Claims ### Claim 1 A component of hydraulics configured for controlling a pressure medium connection or pressure medium flow, the component comprising: a first portion which is additively manufactured at least in part and on which at least one control geometry is formed, the at least one control geometry configured for controlling the pressure medium connection or pressure medium flow; and a second portion which is joined to the first portion by friction welding. ### Claim 2 (depends on 1) The component according to claim 1, wherein the component is configured as a housing, a housing portion, or an element configured to be received in the housing and that is movable in the housing. ### Claim 3 (depends on 1) The component according to claim 1, wherein the first portion includes a clamping region configured for attaching a clamping device for the friction welding. ### Claim 4 (depends on 3) The component according to claim 3, wherein the clamping region extends at least in part over an outer circumference and/or axially at an end. ### Claim 5 (depends on 3) The component according to claim 3, wherein the clamping region is divided into circumferentially spaced apart and/or axially spaced apart clamping portions. ### Claim 6 (depends on 3) The component according to claim 3, wherein the clamping region is formed at least in part by an inserted semi-finished part or insert. ### Claim 7 (depends on 1) The component according to claim 1, wherein materials of a first friction-welded region of the first portion and a second friction-welded region of the second portion are the same or are different. ### Claim 8 (depends on 1) The component according to claim 1, wherein the first portion is a hollow body. ### Claim 9 (depends on 1) The component according to claim 1, wherein the first portion is optimized in respect of weight and strength and/or in respect of weight and flow resistance. ### Claim 10 (depends on 1) The component according to claim 1, wherein the component is a valve plunger for a hydraulic valve. ### Claim 11 (depends on 10) The component according to claim 10, wherein the valve plunger is a valve slide and the hydraulic valve is of slide construction. ### Claim 12 (depends on 3) The component according to claim 3, wherein the clamping region is formed on at least one radial collar. ### Claim 13 An arrangement comprising: a loose first portion of a component of hydraulics, wherein the loose first portion is configured to be joined by friction welding to a loose second portion to form a component, wherein the first portion is at least partially additively manufactured and has at least one control geometry configured for controlling a pressure medium connection or pressure medium flow, and wherein the first portion includes a clamping region configured to absorb a clamping force and/or a clamping moment during the joining by friction welding. ### Claim 14 (depends on 13) The arrangement according to claim 13 wherein the second portion is manufactured at least in part additively or in an alternative way. ### Claim 15 (depends on 13) The arrangement according to claim 13 further comprising: a clamping device configured to clamp the first portion, wherein an inner lateral surface of the clamping device contacts or is configured to be brought into contact at least in part with the clamping region. ### Claim 16 (depends on 15) The arrangement according to claim 15, wherein the clamping device is a clamping sleeve. ### Claim 17 (depends on 13) The arrangement according to claim 13, wherein the clamping region is divided into clamping portions, which include at least one circumferential clamping portion and/or at least one end clamping portion. ### Claim 18 (depends on 15) The arrangement according to claim 15, wherein: the clamping region is divided into clamping portions, which include at least one circumferential clamping portion and/or at least one end clamping portion; and (i) at least one circumferential portion of the inner lateral surface contacts or is configured to be brought into contact with the at least one circumferential clamping portion and/or (ii) at least one end portion of the inner lateral surface contacts or is configured to be brought into contact with the at least one end clamping portion. ### Claim 19 (depends on 13) The arrangement according to claim 13, wherein each of the first portion and second portion includes a friction surface, and the friction surface of at least one of the first and second portions is planar or protrudes axially or is axially depressed. ### Claim 20 A method for joining a first portion and a second portion of a component of hydraulics to form said component, wherein the first portion is at least partially additively manufactured and includes (i) at least one control geometry configured for controlling a pressure medium connection or pressure medium flow and the (ii) a clamping region configured for attachment of a clamping device, the method comprising: clamping the first portion at the clamping region; clamping the second portions; positioning the first and second portions relative to and/or against one another; and joining the first portion to the second portion by friction welding to form a material-bonded connection between the first and second portions.