www.dmgmori.com GM 16 6 GM 20 6 Cam-controlled multi-spindle turning machines GM series
Applications and parts Machine and technology Technology competence Technical data GM series Six-spindle turning machines for modern large-scale production. With the GM series, GILDEMEISTER Italiana has developed a product line that combines the full technological expertise of Europe's largest manufacturer of six-spindle automatic lathes into one machine concept. It was done so successfully and developed so intuitively that multispindle turning machines remain the most economical for large-scale turned parts production, not least because powerful, electrically-controlled AC drives significantly reduce cycle times. The GM series offers benefits other than economic efficiency, for example, a high degree of flexibility, which allows simple and complex turned parts with an outside diameter of up to 25 mm, to be machined in medium batch sizes. As option, up to four CNC compound slides are used for internal and external contour turning or for thread cutting. A machine range designed for highest precision results. 02 Automotive Automotive Hydraulics Hydraulics Valve Dimensions: ø 12 28 mm Material: Brass Machining time: 5.2 sec. Bushing Dimensions: ø 12 16 mm Material: 100Cr6 Machining time: 7.2 sec. Nipple Dimensions: ø 20 28 mm Material: Brass Machining time: 4.2 sec. Bolt Dimensions: ø 16 41 mm Material: AISI 420F Machining time: 11.2 sec.
Economical Hydraulics GILDEMEISTER Italiana cam-type multispindle automatic lathes are the best solution for fast and cost-optimised production. Piston Dimensions: ø 22 38 mm Material: Aluminium Machining time: 14.2 sec. 03 Hydraulics Connector Dimensions: ø 13 43 mm Material: Brass Machining time: 6.4 sec.
Applications and parts Machine and technology êêgm 16 6 Technology competence Technical data GM series GM 16 6: High economic efficiency for small diameters. Commercial success is only possible through economical production. GM 16 6 multi-spindle automatic lathes maximise precision in the diameter range below 16 mm. Short travels and high speeds the six-spindle machine is not only highly productive, but is also very flexible in its field of application. Whether it is high-speed drilling, reaming or thread cutting, synchronous or long part turning a universal front-working slide with integrated tool drive not only allows a number of machining options, but also eliminates additional investments. It is no longer necessary to pay for additional special equipment or their installation costs. Shorter set-up times, a higher degree of operating convenience and more precise results GM 16 6 automatic lathes optimise production processes through progressive technology. 04 Highlights + + Ultimate machining precision with the Monoblock structure, very high rigidity and thermal stability, Hirth coupling for spindle drum locking + + High-speed main spindles (9,000 rpm) for machining bars up to 4 m in length GM 16 6: The economical automatic turning machines for medium and large-scale production. + + Adjustable minimum cycle time < 0.9 second, also for double drop production + + Short set-up times thanks to fine adjustment of the slides and pre-adjustment of the tool holders
1 Short travels for maximum precision 2 Large working area with 6 spindles 1 05 2 Central block for ultimate stability and precision + + Central block for guiding the front-working tools and pick-up spindles for maximum stability and precision during machining + + Optimal solution for machining parts up to 180 mm in length by guiding the front-working tool carrier on the central block Spindle drum with Hirth coupling + + Positive locking of the spindle drum in the drum housing by a Hirth coupling for ultimate stability and accuracy + + Maximum rigidity and precision thanks to the closed frame structure of the machine
Applications and parts Machine and technology êêgm 16 6 Technology competence Technical data GM series GM 16 6: Progressive technology for increased productivity. Increased productivity, perfect ergonomics, high precision and flexibility GM 16 6 turning machines feature technology that does great things on the small diameter scale. Highly dynamic AC motors delivering infinitely variable speeds and feeds reduce com ponent production times as well as non-productive times by increasing the efficiency of rapid traverses. Maximum flexibility is possible through independent set-up of slide traverses and opening and closing of the collets with simultaneous material feed at all stations. An inte grated quick-change system guarantees short set-up times. In order to be able to provide ideal conditions for high precision production, the design of the automatic lathe is based on a Monoblock with impressive thermal properties. 06 Highly stable machine concept Maximum rigidity through a machine construction based on a frame or portal design to minimise distortion during machining. Optimal damping properties through machine bed, main spindle and front-working tool carrier construction and the overhead bracing. Maximum stability through machining of workpieces from the front (no angle tools required) and guidance of the front-working tools on the central block. Maximum thermal stability through axially symmetrical machine structure. Minimum temperature influence in the working area by external drives for the main spindle and front-working tools as well as the drives for traversing in the Z and W axes.
1 2 07 3 1: Front-working and cross cam drives with adjustable ratio 2: Precise positioning of the spindle drum through Hirth coupling 3: Highly dynamic AC motors for minimised cycle times (0.9 sec.) GM 16 6: Monoblock machine structure.
Applications and parts Machine and technology êêgm 20 6 Technology competence Technical data GM series GM 20 6: Maximum precision with short cycle times. GM 20 6 multispindle automatic lathes are the best-selling six-spindle automatic turning machines at GILDEMEISTER Italiana. More than 4,000 have been sold all over the world. This success is largely attributable to the high reliability of the machines. The sales success also shows that the technology of the GM 20 6 automatic lathes is at the highest performance level in this machine class, a fact which is of particular advantage to the user. Thanks to the high degree of flexibility, it is possible to econom - ically produce medium batch sizes in short cycle times with this six-spindle machine. Modern design, ultimate operating convenience, optimal functionality and electronic monitoring and control systems GM 20 6 multispindle automatic lathes set benchmarks for the production of medium diameter workpieces. 08 Highlights + + Component diameters up to 25 mm + + High cutting efficiency due to maximum speeds of up to 5,000 rpm + + Electronically controlled AC drives as standard to optimise cycle times + + Maximum positioning precision of the spindle drum in the µm range
Large and easily accessible working area with 6 spindles. GM 20 6: Extremely reliable with maximum precision.
Applications and parts Machine and technology êêgm 20 6 Technology competence Technical data GM series GM 20 6: New standards of productivity thanks to sophisticated technology. The technical configuration of the GM series has been improved for its application to the GM 20 6 turning machines. Compared to the GM 16 6, these machines provide even more ways to optimise processes and systematically boost productivity with their flexibility and precision. In line with the larger diameter range, the AC motors achieve speeds of up to 5,000 rpm and higher cutting power. Additionally, the built-in thread-cutting drive and four optional CNC compound slides for cross or longitudinal turning provide more machining options. This ultimate flexibility in no way compromises the precision of these automatic turning machines. On the contrary, the positioning precision of the spindle drum is in the µm range. 10 1 2 1: Parts up to 25 mm in diameter 2: Small diameter, deep hole drilling with up to 120 bar coolant 3: Maximum flexibility and precision for large series production 3
4: Final machining in the µm range in air-conditioned environment 5: Oil cooling for smooth and high precision machining 6: CNC slide position 2, 4, 5 and 6 (optional) 11 4 5 6
Applications and parts Machine and technology Technology competence Technical data GM series Demo parts Connector Sector Electronics Workpiece dimensions Ø 6 18 mm Material AISI316L Machining time 4.1 sec. Ø 6 mm Coupling Sector Automotive Workpiece dimensions Ø 14 12 mm Material 20MnCr5 Machining time 7.2 sec. Ø 14 mm 12 Bushing Sector Automotive Workpiece dimensions Ø 8 6 mm Material AISI 430F Machining time 3.3 sec. Ø 8 mm Screwdriver Sector Automotive Workpiece dimensions Ø 6 18 mm Material CuZn39Pb3 Machining time 4.2 sec. Ø 6 25 mm Injection pump Sector Automotive Workpiece dimensions Ø 9 42 mm Material ETG100 Machining time 12.2 sec. Ø 9 mm Bolt Sector Automotive Workpiece dimensions Ø 5 32 mm Material ETG100 Machining time 3.6 sec. Ø 5 mm
Coupling Sector Hydraulics Workpiece dimensions Ø 16 24 mm Material 20MnCr5 Machining time 9.5 sec. Ø 16 mm Bolt Sector Hydraulics Workpiece dimensions Ø 8 40 mm Material Brass Machining time 4.2 sec. Ø 8 mm Washer Sector Automotive Workpiece dimensions Ø 19.5 15 mm Material Stainless steel Machining time 11.6 sec. Ø 19.5 mm 13 Shaft Sector Tool setup Workpiece dimensions Ø 20 45 mm Material 11L44 Machining time 7.85 sec. Ø 20 mm Connector Sector Automotive Workpiece dimensions Ø 24 22 mm Material AISI 316L Machining time 10 sec. Ø 24 mm Cleaning screw Sector Automotive Workpiece dimensions Ø 8 32 mm Material 11SMnPb28 Machining time 3.6 sec. Ø 8 mm
Applications and parts Machine and technology Technology competence Technical data êêpower charts êêfloor plans êêtechnical data GM series Power charts / Floor plans GM 16 6 GM 20 6 Torque (Nm) 100 80 60 Md (Max) P (Max) Power (kw) 25 20 15 Torque (Nm) 120 100 Md (Max) 80 Md (S1 100K) 60 P (Max) Power (kw) 25 20 15 40 P (S1 100K) 10 40 P (S1 100K) 10 20 Md (S1 100K) 5 20 5 0 0 943 780 502 2,065 Speed (rpm) 1,000 3,000 5,000 7,000 9,000 Speed (rpm) 1,000 2,000 3,000 4,000 5,000 14 GM 16 6 GM 16 6 Front view Side view 1,314 2,450 2,832 2,680 5,512 600 800 1,107 1,260 3,951 15 1,435 900 780 500 1,190 1,810 1,934 1,800 1,925 28.5 1,777 1,376 1,190 2,300 GM 20 6 GM 20 6 Front view Side view 1,370 300 1,185 1,897 190 190 410 200 2,505 52 478 650 5,407 1,120 1,538
GM series Technical data GM 16 6 GM 20 6 max. round mm 16 20 (25) max. square mm 11 14 max. square mm 14 17 Spindle pitch circle diameter mm 165 180 (rigid table) Bar feed mm 80 (125) 100 Longitudinal slide travel mm 63 86 Travel of longitudinal guide block mm 50 Side slide travel position 1 + 2 mm 28 42 Side slide travel position 3 + 6 mm 28 42 Side slide travel position 4 + 5 mm 28 42 Cross slide travel, longitudinal mm 45 50 Spindle speed infinitely variable rpm 600 9,000 420 5,000 Cycle times infinitely variable s 0.9 50 1.4 60 Rapid traverse time s 0.45 0.7 Main drive power kw 11 11 Footprint without bar magazine mm 4,800 1,100 4,700 1,600 Footprint with bar magazine mm 5,550 1,100 5,500 1,500 Net weight with bar magazine dan 4,800 6,000 15
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