LGA Continuous Generating Gear Grinding Machine. Optimal Performance. Designed For.

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1 LGA-2812 Continuous Generating Gear Grinding Machine Designed For Optimal Performance

2 Introduction Precision CNC Control For Efficient Production Main Features Leading Technologies Enhance Efficiency Axis Descriptions B-axis Grinding Wheel C-axis X-axis Y-axis Z-axis V-axis Work Head Grinding Wheel Slide Workpiece Horizontal Slide Workpiece Vertical Slide Dressing Wheel Slide Y U2-axis W2-axis Dressing Wheel Tilting Dressing Wheel Pressure Angle Tilting Z SP3-axis Dressing Wheel Spindle W2 B X U2 SP3 C LGA-2812 Luren Precision was initially established for manufacturing and researching gear cutting tools. This technology was first developed by the Mechanical Industrial Research Laboratories at the Industrial Technology Research Institute in Hsinchu, Taiwan. In 1995 Luren built the first production line for hobs and shaving cutters. In 1996 Luren was already supplying gear cutting tools to many international markets, such as Europe, America, and Asia. Through many successful years of gear cutting tool manufacturing, gear cutting tool software development and gear grinding machine development, Luren brings you Continuous Generating Gear Grinding Machine the all new LGA-2812 CNC Continuous Generating Gear Grinding Machine. LGA-2812 is built on a Reishauer AZA machine base, utilizing an advanced Siemens Sinumerik 840D CNC controller, high speed workpiece spindle, and grinding wheel spindle. Luren's highly efficient generating gear grinding and impressive gear grinding results are achieved by implementing a Luren designed and created gear grinding software which acts as an interface between Luren grinding machine and the Siemens 840D controller. Minimal CNC experience is necessary to operate this machine. LGA-2812 is built on a Reishauer AZA machine base. This type of base has been used for many decades with exceptional results. The high rigidity of this type of base considerably adds to the overall performance of the LGA LGA-2812 is equipped with the most advanced Siemens CNC controller available and the high precision electronic gear box module supplied by Siemens. Also integrated in the machine are an 8-axis close-loop servo control system and a direct drive motor such that all axes move simultaneously and very accurately. LUREN's intelligent gear grinding software is a Windows-based interface which has been carefully designed to support the complete grinding process. The operator does not need comprehensive CNC training to operate the LGA since Luren's grinding software interfaces with the Siemens CNC controller to calculate all the necessary data to complete the CNC program. 1 2 V

3 Components LGA-2812 is equipped with high speed spindles. The workpiece spindle can operate up to 600 rpm and the grinding wheel spindle can reach up to 5,000 rpm. Together they work in concert to increase gear production efficiency and accuracy. Meanwhile, the builtin automatic dynamic balancing system acts to reduce deviation caused by dressing or grinding. Perfect Design Offers Excellent Performance High Efficient, High Precision Mechanical Structure & Dialogue Operating System Workpiece Spindle & Grinding Spindle Software Technology Innovative CNC Control Conversational Interface Windows-based Software Luren's generating grinding software includes gear data input, tooth flank modification, tool setting, corrections, and machining process editing. Each of these categories offers interactive dialogues and error feedback for program assistance. The operator can easily add the necessary gear data and the grinding requirements to visually see the grinding program created. After completing the required information in the Luren software all of the NC process steps will be generated automatically. This allows operators to run the machine with little to no CNC experience, an amazing benefit for such an advanced machine. Windows-Based Operating System Dressing Device Tooth Flank Modification Luren engineered smart dialogue Windows-based gear The dressing device consists of a single The tooth flank modification module provides a grinding software was developed to operate through a diamond profile rotary dresser with convenient way to adjust the gear flank curve Microsoft Windows system. This allows the operator pressure angle adjustability resulting in time by using the mouse on the curve itself or to to have the flexibility to make changes that would savings on installation and adjustments as input the new value in its designated field. This otherwise be very difficult to accomplish in the confines well as enhanced dressing efficiency. allows for quick and easy modifications within of the supplied CNC interface. The grinding process is Luren's software. 3 easily edited by the use of the mouse and the keyboard. 4

4 Software Technology Mechanical Specifications The Best Accessories For Quality Assurance Main Specifications Max. Workpiece Outside Diameter 280 mm 11.0 Min. Workpiece Root Diameter 20 mm 0.8 Max. Module M 5 DP 5 Max. Profile Height 13.5 mm 0.5 Helix Angle / Swivel Angle of Grinding Wheel ±45 ±45 Max. Grinding Slide Travel (Spur) 140 mm 5.5 Max. Drive Power of Workpiece 18.5 kw 25 Hp Max. Drive Power of Grinding Wheel 25 kw 33 Hp Tools Setting The tools setting module covers all machining tools such as grinding worm, rotary dresser, etc. To complete this step the operator only needs to input the tool data and store the data. This is a very convenient way to avoid tooling management mistakes that can contribute to machine down time. Min. / Max. Grinding Wheel Diameter Grinding Wheel Specifications Root Diameter 260 mm Outside Diameter 360 mm Max. rpm of Grinding Wheel 5,000 rpm 5,000 rpm Max. Grinding Wheel Thickness 104 mm 4 Max. Grinding Wheel Teeth Number 3 3 Voltage Electric System 3Ø / 380V Root Diameter 10.5 Outside Diameter 14 Current Requirement 150 Amp Ambient Temperature 50 F ~ 104 F / 10 C ~ 40 C Corrections The corrections module can effectively eliminate installation errors due to operator error in the set-up of work piece, grinding wheel or worm wheel. The operator can enter the grinding correction value obtained from the on-board measurement system to produce a high quality finely ground gear. Max. Load of Machine SIEMENS SINUMERIK 840D sl Space Requirement 100 kva CNC Controller Dimension and Weight L 2,550 x W 5,600 x H 2,550 mm L 8.5 x W 18.5 x H 8.5 ft Weight of Basic Machine 5,000 kg 11,000 lbs Luren reserves the right to change or modify the machine specifications as new technologies and industrial advancements become available. Machining Process Machining process module allows operators arrange actual work schedule easily by clicking and dragging the items that the operator is looking to change. This final grinding plan can also be saved for future use. 5 6

5 LUREN PRECISION CO., LTD. Headquarters No 1-1, Li-Hsin 1 st Rd., Hsinchu Science Park, Hsinchu 30078, Taiwan Tel: Fax: Chicago Branch Luren Precision Chicago Co., Ltd. 707 Remington Road, Suite 1, Schaumburg, IL 60173, USA Tel: Fax: Shanghai Branch Luren Precision Machinery (Shanghai) Co., Ltd. 6A, Building 2, 401, CaoBao Rd., Xuhui Dist., Shanghai, China Tel: Fax: Osaka Branch Luren Precision (Japan) Inc. O's 520 ATC Bldg North Wing 5F , Nanko-Kita, Suminoe, Osaka Japan Tel: Fax: sales@luren.com.tw Visual Design/ tel /2013