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CNC Precision Automatic Lathe Sliding Headstock Type Automatic Lathe That Encompasses the Entire Process 12-Station Turret +

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CNC Precision Automatic Lathe Sliding Headstock Type Automatic Lathe That Encompasses the Entire Process 12-Station Turret + External View BH20/BH20Z (２０) １８５ ７００ １,４０５ １,５８５ ５２０ ４２５ (１６０) CNC Precision Automatic Lathe １ ,９１０ ５７０ ( ５６０ ) ２ ,４８０ ３ ,０４０ １,７３３ １,０００ (Center height) １,０００ External View BH38 １,７９０ ６１０ ８１０ １ ,１３０ １ ,２００ ２ ,３３０ ４００ ( １００ ) ( ５６３ ) ２ ,７３０ ８１０ ９８０ ３ ,３９３ １,７００ １,０００ Sliding headstock type automatic lathe that encompasses the entire process 12-station turret + Gang type tool post + Back spindle Export permission by the Japanese Government may be required for exporting our products in accordance with the Foreign Exchange and Foreign Trade Law. Please contact our sales office before exporting our products. The specifications of this catalogue are subject to change without prior notice. 12-20, TOMIZAWA-CHO, NIHONBASHI, CHUO-KU, TOKYO 103-0006, JAPAN Phone : 03-3808-1172 Facsimile : 03-3808-1175 CAT.NO.E112524.JUN.3T（H） Complex-shaped parts can be machined from bar stocks ■ 12-station turret with independent drive mechanism ■ Cycle time drastically shortened using three-path control ■ Complete machining from bar stock BH20, BH20Z: Max. 35 tools BH38: Max. 34 tools ■ Powerful main-spindle and back-spindle motors ■ Many NC features are provided as standard. ■ Automatic programming system for BH (optional) Photo: BH20/BH20Z Machining example Material SUS303 Bar stock diameter φ25 Conventional model Simultaneous machining time ４５ １８ Main BH20 spindle Z1 Ｍ１６ １ ６ ４ －０．０１ －０．０３ 230sec. Y3 φ３ Y3 φ１７ Back spindle ±０．０３ X1 φ８ Y1 X3 Z3 φ２２ X3 Z3 φ２４ BH38 X2 BH20Z (１０) ５ ５ １０ ２－Ｍ４ Simultaneous machining time Z2 (３０) ４０ Main spindle ７０ 160sec. Back spindle BH38 BH38 2 3 Complex-shaped parts can be machined from bar stocks ■ 12-station turret with independent drive mechanism ■ Cycle time drastically shortened using three-path control ■ Complete machining from bar stock BH20, BH20Z: Max. 35 tools BH38: Max. 34 tools ■ Powerful main-spindle and back-spindle motors ■ Many NC features are provided as standard. ■ Automatic programming system for BH (optional) Photo: BH20/BH20Z Machining example Material SUS303 Bar stock diameter φ25 Conventional model Simultaneous machining time ４５ １８ Main BH20 spindle Z1 Ｍ１６ １ ６ ４ －０．０１ －０．０３ 230sec. Y3 φ３ Y3 φ１７ Back spindle ±０．０３ X1 φ８ Y1 X3 Z3 φ２２ X3 Z3 φ２４ BH38 X2 BH20Z (１０) ５ ５ １０ ２－Ｍ４ Simultaneous machining time Z2 (３０) ４０ Main spindle ７０ 160sec. Back spindle BH38 BH38 2 3 The direct-drive rotary guide bushing enables higher spindle speed. BH20/BH20Z Overrapped machining with the back spindle ■Maximum spindle speed: 10,000min-1 ■Machining stroke: 170mm (built-in motor drive) Improved geometric accuracy, dimensional accuracy, and surface roughness with high speed and quiet operation ■Improved rotation and phase synchronization accuracy with the main spindle ■The main/back spindle follow-up function enables Guide bushing type or guide-bushing-less type selectable rounding cut-off. according to the workpiece (Option) BH20/BH20Z Guide bushing spindle Guide-bushing-less ■Stationary guide bushing ■Guide-bushing-less unit structure structure ■Direct-drive rotary guide bushing device ■Possible to switch between the guide bushing type and guide-bushing-less type so the most suitable operation for the workpiece length can be chosen. ■The spindle without a guide bushing does not require ground bars, enabling high speed and high precision when machining cold drawn bars. １８０ mm ３０ mm Remnant length Remnant length The shortest possible remnant length is 30 mm. (Carrier type rotary guide bushing device) BH20/BH20Z back spindle "Double Spindle" structure enables powerful machining that produces blue chips. BH38 Shortened indexing time Higher rigidity of rotary tools "Double Spindle" structure ■The double spindle structure that integrates the guide bushing and the spindle ■Turret indexing time by the servo motor: 0.3 sec ■20% increase in productivity thanks to enlarged (in perfect synchronization) enables high accuracy and powerful machining. ■Chip-to-chip time: 2 sec (4 sec on the conventional model) drive shaft and bearing. ■Since water-soluble coolant can be used, there is no danger of fire or greasy ■Non-lift indexing turret reduces mechanical shocks. ■Bore diameter on turret: 40 mm (32 mm on conventional models) fumes even when heavy duty machining is performed. ■Short remnant length (150 mm + workpiece length) ■3 times faster feed rate, 3 times greater productivity Independent drive ４ 7 ３ 6 ■Quiet operation, energy saving ５ Torque Torque [N・m] Main spindle torque chart [N・m] Back spindle torque chart ２ 8 80 and improved machining accuracy ６ 80 5 Equipped with more powerful main-spindle 30min. S3 60％ Applicable machining area by less influence from thermal １ 60 ７ 60 49Nm S3 10％ １ １２ and back-spindle motors that increase distortion on turret. 4 40 ８ Applicable area for 29Nm S3 40％ １１ 40 2 continuous machining 20Nm S1 Cont. ■Rotary tools can be mounted １０ ９ 3 machining capability. BH38 20 11 1,070 on all 12 stations. 7 1.8 20 1,800 5,000 0 1.3 Main spindle motor: 7.5/11kW 0 2,000 4,000 6,000 8,000 1,500 Back spindle motor: 3.7/5.5kW 0 Motor speed[min-1] 0 2,000 4,000 6,000 8,000 Motor speed[min-1] BH20/BH20Z/BH38 Conventional model 4 5 The direct-drive rotary guide bushing enables higher spindle speed. BH20/BH20Z Overrapped machining with the back spindle ■Maximum spindle speed: 10,000min-1 ■Machining stroke: 170mm (built-in motor drive) Improved geometric accuracy, dimensional accuracy, and surface roughness with high speed and quiet operation ■Improved rotation and phase synchronization accuracy with the main spindle ■The main/back spindle follow-up function enables Guide bushing type or guide-bushing-less type selectable rounding cut-off. according to the workpiece (Option) BH20/BH20Z Guide bushing spindle Guide-bushing-less ■Stationary guide bushing ■Guide-bushing-less unit structure structure ■Direct-drive rotary guide bushing device ■Possible to switch between the guide bushing type and guide-bushing-less type so the most suitable operation for the workpiece length can be chosen. ■The spindle without a guide bushing does not require ground bars, enabling high speed and high precision when machining cold drawn bars. １８０ mm ３０ mm Remnant length Remnant length The shortest possible remnant length is 30 mm. (Carrier type rotary guide bushing device) BH20/BH20Z back spindle "Double Spindle" structure enables powerful machining that produces blue chips. BH38 Shortened indexing time Higher rigidity of rotary tools "Double Spindle" structure ■The double spindle structure that integrates the guide bushing and the spindle ■Turret indexing time by the servo motor: 0.3 sec ■20% increase in productivity thanks to enlarged (in perfect synchronization) enables high accuracy and powerful machining. ■Chip-to-chip time: 2 sec (4 sec on the conventional model) drive shaft and bearing. ■Since water-soluble coolant can be used, there is no danger of fire or greasy ■Non-lift indexing turret reduces mechanical shocks. ■Bore diameter on turret: 40 mm (32 mm on conventional models) fumes even when heavy duty machining is performed. ■Short remnant length (150 mm + workpiece length) ■3 times faster feed rate, 3 times greater productivity Independent drive ４ 7 ３ 6 ■Quiet operation, energy saving ５ Torque Torque [N・m] Main spindle torque chart [N・m] Back spindle torque chart ２ 8 80 and improved machining accuracy ６ 80 5 Equipped with more powerful main-spindle 30min. S3 60％ Applicable machining area by less influence from thermal １ 60 ７ 60 49Nm S3 10％ １ １２ and back-spindle motors that increase distortion on turret. 4 40 ８ Applicable area for 29Nm S3 40％ １１ 40 2 continuous machining 20Nm S1 Cont. ■Rotary tools can be mounted １０ ９ 3 machining capability. BH38 20 11 1,070 on all 12 stations. 7 1.8 20 1,800 5,000 0 1.3 Main spindle motor: 7.5/11kW 0 2,000 4,000 6,000 8,000 1,500 Back spindle motor: 3.7/5.5kW 0 Motor speed[min-1] 0 2,000 4,000 6,000 8,000 Motor speed[min-1] BH20/BH20Z/BH38 Conventional model 4 5 Shorter cycle time under three-path control X/Y/Z-axis movement of turret ■A variety of simultaneous machining styles available ■Z-axis added turret increases machining capability Balance turning BH20Z/BH38 Long thread cutting BH20Z/BH38 Z３-axis movement Z３-axis movement Back spindle - Turret Main spindle - Turret Ｚ３ Ｚ３ Ｘ２ Ｚ２ Ｚ２ Ｚ２ Ｚ１ Ｚ１ Ｚ１ Ｚ１ Ｘ１ Ｘ１ Longitudinal adjustment with Long thread cutting NC control (４０ mm or longer) is possible. Main spindle - Gang type tool post Back spindle - Rear tool post (1) Simultaneous drilling (2) Simultaneous turning (3) Simultaneous drilling (front, back) (front, back) (cross, back) BH20/BH20Z/BH38 BH20/BH20Z/BH38 BH20/BH20Z/BH38 Generously opening rear door is Ｘ３ Ｘ３ Ｘ３ Ｘ３ provided as standard Ｙ３ Ｚ３ ■Heavy components such as rotary tools can be mounted and dismounted at the rear of the machine. Ｘ２ Ｘ２ Ｘ２ ■The index selector switch for the turret is located on the Ｚ１ Ｘ２ Ｚ１ rear side of the machine to ensure easy operation. Ｚ２ Ｙ１ Ｚ２ Ｘ１ Ｚ２ Ｚ２ Ｘ１ Ｘ１ Ｘ１ (4) Balance turning + (5) Simultaneous cross drilling/end milling + (6) Simultaneous turning/drilling + (7) Front off-center drilling + cross drilling + Back spindle machining Back spindle machining Back spindle machining Back spindle machining BH20/BH20Z/BH38 BH20/BH20Z/BH38 BH20/BH20Z/BH38 BH20Z/BH38 6 7 Shorter cycle time under three-path control X/Y/Z-axis movement of turret ■A variety of simultaneous machining styles available ■Z-axis added turret increases machining capability Balance turning BH20Z/BH38 Long thread cutting BH20Z/BH38 Z３-axis movement Z３-axis movement Back spindle - Turret Main spindle - Turret Ｚ３ Ｚ３ Ｘ２ Ｚ２ Ｚ２ Ｚ２ Ｚ１ Ｚ１ Ｚ１ Ｚ１ Ｘ１ Ｘ１ Longitudinal adjustment with Long thread cutting NC control (４０ mm or longer) is possible.
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