# US 2019/0173347 A1 · Tool system for tightening retightenable wedge system in slot of generator stator core > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0173347 A1 - Document ID: US20190173347A1 - Status: Published application - Kind: A1 - Application number: 15/831,985 - Filed: 2017-12-05 - Published: 2019-06-06 - Earliest claimed: 2017-12-05 - Assignees: Siemens Energy, Inc. - Applicants: Siemens Energy, Inc. - Inventors: Xabier A. Sanjuan; Michael R. Vindler; Michael A. Hall; Timothy J. Garner; James A. Bauer - Web page: https://patentgrep.com/patent/US20190173347A1 ## CPC - H02K 3/487: Slot-closing devices - H02K 15/021: Magnetic cores - H02K 15/063: {Windings for large electric machines, e.g. bar windings (windings consisting of cables H02K15/065)} - B25B 27/023: {using screws} - H02K 15/13: Applying slot closure means in the cores; Manufacture of slot closure means - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - B25B: TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING ## Abstract A tool system for tightening a retrightenable wedge system in a slot of a generator stator core is presented. The tool system includes a carriage assembly and a wedge tool assembly that is pivotally coupled to the carriage assembly. The carriage assembly includes motorized drives that axially moves the tool system along the slot and holds the tool system on the slot at an axial position. The wedge tool assembly includes a torqueing socket to tighten the retightenable wedge assembly in the slot. The torqueing socket is driven by a worm gear arrangement. ## Claims ### Claim 1 A tool system for tightening a retightenable wedge system in a slot of a generator stator core, wherein the retightenable wedge system comprises a first filler layer placed on a coil in the slot, a spring member placed on the first filler layer, a second filler layer placed on the spring member, and a retightenable wedge assembly comprising a tightening member and a slot wedge placed on the second filler layer, the tool system comprising: a tool carriage assembly configured to axially moving the tool system along the slot and to hold the tool system on the slot at an axial position; and a wedge tool assembly pivotally coupled to the tool carriage assembly configured to tighten the retightenable wedge assembly, wherein the wedge tool assembly comprises a housing and a torqueing socket arranged on the housing, and wherein the torqueing socket is configured to be inserted into the tightening member to tighten the retightenable wedge assembly. ### Claim 2 (depends on 1) The tool system as claimed in claim 1, wherein the wedge tool assembly comprises a plate attached to a bottom surface of the housing by a plurality of screws. ### Claim 3 (depends on 2) The tool system as claimed in claim 2, wherein the wedge tool assembly comprises a worm gear arrangement arranged on the plate. ### Claim 4 (depends on 3) The tool system as claimed in claim 3, wherein the torqueing socket is configured to be driven by the worm gear arrangement to tighten the retightenable wedge assembly. ### Claim 5 (depends on 3) The tool system as claimed in claim 3, wherein the wedge tool assembly comprises a motor that is configured to drive the worm gear arrangement. ### Claim 6 (depends on 2) The tool system as claimed in claim 2, wherein the wedge tool assembly comprises a pair of guiding skids axially attached to the plate and spaced apart from each other, wherein the guiding skids is configured to guide the tool system axially moving along the slot, and wherein a radial position of the plate is adjustable by the screws such that the guiding skids attach to a top surface of the slot wedge. ### Claim 7 (depends on 1) The tool system as claimed in claim 1, wherein the wedge tool assembly comprises a shaft arranged on a top surface of the housing, and wherein the shaft is connected to the torqueing socket that is configured to move the torqueing socket in a radial direction. ### Claim 8 (depends on 7) The tool system as claimed in claim 7, wherein the top surface of the housing has a concave shape, and wherein the shaft is embedded in the concave shaped top surface. ### Claim 9 (depends on 7) The tool system as claimed in claim 7, wherein the shaft is connected to the torqueing socket via a hinge through an aperture perpetrating the housing from a bottom surface to the top surface. ### Claim 10 (depends on 1) The tool system as claimed in claim 1, wherein the housing comprises a hinge assembly that is configured to pivotally couple the wedge tool assembly to the tool carriage assembly. ### Claim 11 A method for tightening a retightenable wedge system in a slot of a generator stator core using a tool system, wherein the retightenable wedge system comprises a first filler layer placed on a coil in the slot, a spring member placed on the first filler layer, a second filler layer placed on the spring member, and a retightenable wedge assembly comprising a tightening member and a slot wedge placed on the second filler layer, wherein the tool system comprises a tool carriage assembly and a wedge tool assembly pivotally coupled to the tool carriage assembly, the method comprising: axially moving the tool system along the slot by the tool carriage assembly; holding the tool system on the slot at an axial position by the tool carriage assembly; and tightening the retightenable wedge assembly by the wedge tool assembly, wherein the wedge tool assembly comprises a housing and a torqueing socket arranged on the housing, and wherein the torqueing socket is configured to be inserted into the tightening member to tighten the retightenable wedge assembly. ### Claim 12 (depends on 11) The method as claimed in claim 11, wherein the wedge tool assembly comprises a plate attached to a bottom surface of the housing by a plurality of screws. ### Claim 13 (depends on 12) The method as claimed in claim 12, wherein the wedge tool assembly comprises a worm gear arrangement arranged on the plate. ### Claim 14 (depends on 13) The method as claimed in claim 13, wherein the torqueing socket is configured to be driven by the worm gear arrangement to tighten the retightenable wedge assembly. ### Claim 15 (depends on 13) The method as claimed in claim 13, wherein the wedge tool assembly comprises a motor that is configured to drive the worm gear arrangement. ### Claim 16 (depends on 12) The method as claimed in claim 12, wherein the wedge tool assembly comprises a pair of guiding skids axially attached to the plate and spaced apart from each other, wherein the guiding skids is configured to guide the tool system axially moving along the slot, and wherein a radial position of the plate is adjustable by the screws such that the guiding skids attach to a top surface of the slot wedge. ### Claim 17 (depends on 11) The method as claimed in claim 11, wherein the wedge tool assembly comprises a shaft arranged on a top surface of the housing, and wherein the shaft is connected to the torqueing socket that is configured to move the torqueing socket in a radial direction. ### Claim 18 (depends on 17) The method as claimed in claim 17, wherein the top surface of the housing has a concave shape, and wherein the shaft is embedded in the concave shaped top surface. ### Claim 19 (depends on 17) The method as claimed in claim 17, wherein the shaft is connected to the torqueing socket via a hinge through an aperture perpetrating the housing from a bottom surface to the top surface. ### Claim 20 (depends on 11) The method as claimed in claim 11, wherein the housing comprises a hinge assembly that is configured to pivotally couple the wedge tool assembly to the tool carriage assembly.