# US 7,462,145 B2 · Machine tool > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,462,145 B2 - Document ID: US7462145B2 - Status: Granted - Kind: B2 - Application number: 11/890,514 - Filed: 2007-08-07 - Published: 2008-02-14 - Granted: 2008-12-09 - Earliest claimed: 2006-08-09 - Assignees: Haas Schleitmaschinen GmbH - Inventors: Thomas Bader; Hans-Dieter Braun - Web page: https://patentgrep.com/patent/US7462145B2 ## CPC - B24B 41/04: Headstocks; Working-spindles; Features relating thereto - B23Q 3/15539: {Plural magazines, e.g. involving tool transfer from one magazine to another (involving manual operation B23Q3/15533)} - B23Q 3/15706: {a single tool being inserted in a spindle directly from a storage device, i.e. without using transfer devices (B23Q3/15786 takes precedence)} - B23Q 3/15733: {the axis of the stored tools being arranged in the rotating or circulating plane of the storage means} - B24B 45/003: {Accessories therefor} - Y10T 483/17: including machine tool or component - Y10T 483/1717: Plural matrices - Y10T 483/174: Abrading wheel - Y10T 483/1795: Matrix indexes selected tool to transfer position - Y10T 483/1845: Plural matrices - Y10T 483/1882: Rotary disc - B24B: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS - 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 - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A machine tool is described, in particular a grinding machine, with a tool storage device. The tool storage device contains an outer magazine wheel (34) and an inner magazine wheel (58), which are independently concentrically rotatable in a controlled manner. The outer magazine wheel (34) preferably holds grinding tools (56), while the inner magazine wheel (58) preferably holds grinding wheel protectors (68). The grinding tool (56) and the grinding wheel protector (68) are removed from the tool storage device and are returned to the latter by the tool spindle (30). The grinding tools (56) and grinding wheel protectors (68) can be exchanged independently in arbitrary combinations and possibly also simultaneously. ## Claims ### Claim 1 Machine tool with at least one tool spindle and with a tool storage device which holds multiple tools in tool holders and is movable in a controlled manner in order to bring a respectively selectable tool holder into an exchange position, with the tools each being arranged in the tool holders so that their central longitudinal axis lies in the plane of motion of the tool storage device and with the tool spindle able to take the tools in the exchange position out of the tool holder and deliver them into the tool holder as the tool spindle is moved into axial alignment with the respective tool, characterized in that the tool storage device has two tool magazines (34, 58), that tools are held in tool holders in each of the two tool magazines (34, 58), with the tools being arranged in the two tool magazines (34, 58) with their central longitudinal axes extending radially relative a rotation axis of the tool storage device and with the tools of one of the two magazines each being spaced in their axial direction with respect to the tools of the respective other tool magazine, and that the two tool magazines (34, 58) are independently movable in parallel planes of motion in a controlled manner in order to bring their respectively selected tool holders into the exchange position. ### Claim 2 (depends on 1) Machine tool according to claim 1, characterized in that the two tool magazines (34, 58) are configured to rotate in their plane of motion and that the tools are arranged in the tool holders with their axis pointing radially to the rotational path of their respective tool magazine. ### Claim 3 (depends on 2) Machine tool according to claim 2, characterized in that the tools are each mounted in the tool holders with their axis directed radially toward the inside of the rotational path and that the tool spindle (28) is movable radially relative to the tools from the inside of the rotational path. ### Claim 4 (depends on 2) Machine tool according to claim 2, characterized in that the two tool magazines are designed as concentrically rotatable magazine wheels (34, 58), with the tool holders (50) on the outer magazine wheel (34) being arranged on a larger radius than the tool holders (70) on the inner magazine wheel (58). ### Claim 5 (depends on 4) Machine tool according to claim 4, characterized in that the magazine wheels (34, 58) each have a segment-shaped cutout (46), into which a work space of the machine tool fits, if the magazine wheels (34, 58) are in their rest position. ### Claim 6 (depends on 4) Machine tool according to claim 4, characterized in that tools (56) are held in the outer magazine wheel (34) and additional devices (68) in the inner magazine wheel (58). ### Claim 7 (depends on 6) Machine tool according to claim 6, characterized in that the outer magazine wheel (34) and the inner magazine wheel (58) can be brought into the exchange position with tools (56) and additional devices (68) that are associated with each other, with the respective tool (56) and the respective additional device (68) being substantially simultaneously receivable or deliverable so that, through a radial displacement of the tool spindle (30), one immediately follows the other. ### Claim 8 (depends on 1) Machine tool according to claim 1, characterized in that the two tool magazines each have an open space, which can be carried into the exchange position, so that, by means of this open space, the tool spindle (30) can be moved to a position with respect to the two tool magazines (34, 58) so as to be able to access the tools held thereby in an unhindered manner. ### Claim 9 (depends on 1) Machine tool according to claim 1, characterized in that the two tool magazines (34, 58) are of modular construction so that the tool storage device can be optionally used with one or two tool magazines. ### Claim 10 (depends on 1) Machine tool according to claim 1, which is designed as a grinding machine, characterized in that tools (56) and additional devices are held in the tool storage device. ### Claim 11 (depends on 10) Machine tool according to claim 10, wherein the tools are grinding tools and the additional devices are grinding wheel protectors.