# US 2014/0193195 A1 · Toothing for operation at a deflection angle and production method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0193195 A1 - Document ID: US20140193195A1 - Status: Published application - Kind: A1 - Application number: 14/128,892 - Filed: 2012-06-22 - Published: 2014-07-10 - Earliest claimed: 2011-06-24 - Assignees: SMS Siemag Aktiengesellschaft - Inventors: Jurgen Merz - Web page: https://patentgrep.com/patent/US20140193195A1 ## CPC - F16D 1/02: for connecting two abutting shafts or the like - B21B 35/143: {having slidably-interengaging teeth, e.g. gear-type couplings (universal joints with the coupling parts having slidably-interengaging teeth, in general, F16D3/18)} - B23P 15/00: Making specific metal objects by operations not covered by a single other subclass or a group in this subclass - F16D 3/185: {radial teeth connecting concentric inner and outer coupling parts} - Y10T 29/49: Method of mechanical manufacture - Y10T 403/7035: Specific angle or shape of rib, key, groove, or shoulder - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES - B21B: ROLLING OF METAL (auxiliary operations used in connection with metal-working operations covered in B21, see B21C; bending by rolling B21D; manufacture of particular objects, e.g. screws, wheels, rings, barrels, balls, by rolling B21H; pressure welding by means of a rolling mill B23K20/04) - B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The invention relates to a toothing, in particular of a drive spindle for driving a roll in rolling mills or continuous casting plants, which comprises several teeth and meshes with a second toothing in the manner of a spline, wherein a flank line of the teeth has a curvature and a deflection angle is formed between the rotational axis of the second toothing and the rotational axis of the toothing, wherein the toothing (1) is designed as having at least one of the following modifications: a tooth root relief of the teeth (2), and/or a tooth tip relief of the teeth (2), and/or a twist of the teeth (2). ## Claims ### Claim at position 1 1-14. (canceled) ### Claim 15 Spline toothing having a toothing (1) engaging in a second toothing, in particular of a drive spindle for driving a roll (13) in a rolling mill or a continuous casting installation, wherein the toothing (1) has many teeth (2), wherein a flank line (12) of the teeth (2) has a curvature and a deflection angle is formed between a rotational axis of the second toothing and a rotational axis of the toothing, characterized in that: the teeth (2) are formed with a twist in form of a profile angle deviation φ in direction of the flank of a tooth (2). ### Claim 16 (depends on 15) Spline toothing according to claim 15, characterized in that flanks of the teeth (2) are formed with a tooth tip profile relief with respect to an involute form. ### Claim 17 (depends on 15) Spline toothing according to claim 15, characterized in that flanks of the teeth (2) are formed with a tooth root profile relief with respect to an involute form. ### Claim 18 (depends on 15) Spline toothing according to claim 15, characterized in that a profile line of a tooth flank on a tooth root (4) and/or a tooth tip (5) is relieved at least parabolically, that a profile difference between a theoretical flank of the involute toothing and the relieved flank increases at least by second power as a function of a roll-off path over the profile of the involute toothing. ### Claim 19 (depends on 18) Spline toothing according to claim 18, wherein the tooth root (4) is relieved on the root circle between 0.2% and 3% of the tooth thickness on the pitch circle, and/or the tooth tip (5) is relieved on the tip circle between 0.1% and 2% of the tooth thickness on the pitch circle. ### Claim 20 (depends on 15) Spline toothing according to claim 15, wherein an involute line is symmetrically curved as a path of a bottom between two teeth in a width direction. ### Claim 21 (depends on 15) Spline toothing according to claim 15, wherein a curvature of the flank line (12) is so formed that difference between a greatest thickness of each tooth (2) at a height of the pitch circle and a smallest thickness of each tooth (2) at the height of the pitch circle corresponds to a value between 3% and 20% of the greatest thickness of each tooth (2w) at the height of the pitch circle. ### Claim 22 (depends on 15) Spline toothing according claim 15, wherein the twist of the teeth (2) is formed by a maximal profile angle deviation (φ) between 0.3° and 1.5°. ### Claim 23 (depends on 15) Spline toothing according to claim 15, wherein the twist of the teeth (2) is formed substantially parabolic in direction of the tooth flank. ### Claim 24 Device for driving a roll of a metallurgical installation, comprising a shaft (15) with a toothing (16, 17, 18, 19) having engaging in a second toothing, in particular of a drive spindle for driving a roll (13) in a rolling mill or a continuous casting installation, wherein the toothing (1) has many teeth (2), wherein a flank line (12) of the teeth (2) has a curvature and a deflection angle is formed between a rotational axis of the second toothing and a rotational axis of the toothing, characterized in that: the teeth (2) are formed with a twist in form of a profile angle deviation φ in direction of the flank of a tooth (2), wherein the shaft (15) includes the toothing (16, 17) of the spline toothing (16, 17, 18, 19). ### Claim 25 (depends on 24) Device according to claim 24, characterized in that the toothing (16, 17) is provided at both ends of the shaft (15). ### Claim 26 (depends on 24) Device according to claim 24, characterized in that the shaft (15) and a roll (13) are arranged at an angle greater than 0°, in particular, more than 0.2° to each other. ### Claim 27 (depends on 26) Device according to claim 26, characterized in that the deflection angle amount to no more than 5°, in particular, between about 2° and about 5°. ### Claim 28 Method of producing a spline toothing having a toothing (1) engageable in a second toothing wherein the toothing (1) has many teeth (2), wherein a flank line (12) of the teeth (2) has a curvature and a deflection angle is formed between a rotational axis of the second toothing and a rotational axis of the toothing, characterized in that: the teeth (2) are formed with a twist in form of a profile angle deviation φ in direction of the flank of a tooth (2), including the step: producing the toothing (1) with a plurality of teeth, characterized in that the following steps of after-treatment are carried out on the produced toothing so that a rotational axis of the toothing (1) can be driven at a deflection angle to a rotational axis of the second toothing: treating flank lines (12) of the toothing (1) so that those have a curvature; treating the teeth (2) so that they are formed with a twist in form a profile angle deviation φ in direction of the flank of the tooth (2). ### Claim 29 (depends on 28) Method according to claim 28, characterized in that the after-treatment includes additionally the following step: treating the flanks of tooth tips of the teeth (2) so that they are relieved with respect to an involute profile. ### Claim 30 (depends on 28) Method according to claims 28, characterized in that the after-treatment includes additionally the following step: treating the flanks of tooth roots of the teeth (2) so that they are relieved with respect to an involute profile. ### Claim 31 (depends on 28) Method according to claim 28, wherein a profile line of the tooth root (4) and/or the tooth tip (5) is so relieved at least parabolically by after-treatment that a profile difference between the theoretical flank of an involute toothing and the relieved flank according to the invention, increases at least by second power as a function of a roll-off path over the profile of the involute toothing. ### Claim 32 (depends on 28) Method according to claim 28, characterized in that the after-treatment includes additionally the following step: treating the involute line of the toothing (1) as a path of the bottom between two teeth so that the involute line has a curvature in a width direction. ### Claim 33 (depends on 28) Method according to claim 28, characterized in that the after-treatment is carried out in at least one of the steps by at least one grinding process or by grinding each tooth flank.