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LGA-2812

Designed For

Optimal Performance

Continuous Generating Gear Grinding Machine

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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 the

all new LGA-2812 CNC Continuous Generating Gear Grinding Machine. LGA-2812 is built on a Reishauer NZA, 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.

Precision CNC Control For Efficient Production

Axis Descriptions

■ LGA-2812 is built on a Reishauer NZA, 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-2812.

■ 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-2812 since Luren's grinding software interfaces with the Siemens CNC controller to calculate all the necessary data to complete the CNC program.

LGA-2812

Introduction Leading Technologies Enhance Efficiency

B-axis Grinding SpindleC-axis Workpiece SpindleX-axis Grinding Radial SlideY-axis Workpiece Horizontal SideZ-axis Workpiece Axial Slide

A1-axis Rotary Dresser Lead Angle Rotation

B1-axis Rotary Dresser SpindleX1-axis Dressing Radial SlideY1-axis Dressing Axial Slide

MainFeatures

Continuous Generating Gear Grinding Machine

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Windows-based Operating SystemLuren engineered smart dialogue Windows-based gear grinding software was developed to operate through a Microsoft Windows system. This allows the operator to have the flexibility to make changes that would otherwise be very difficult to accomplish in the confines of the supplied CNC interface. The grinding process is easily edited by the use of the mouse and the keyboard.

Dressing DeviceEquipped with a single diamond profile rotary dresser, the dressing device is suitable for multi-threads which can raise the accuracy of the profile and production efficiency.

Tooth Flank ModificationThe tooth flank modification module provides a convenient way to adjust the gear flank curve by using the mouse on the curve itself or to input the new value in its designated field. This allows for quick and easy modifications within Luren's software.

Conversational Interface Windows-based Software

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 built-in automatic dynamic balancing system acts to reduce deviation caused by dressing or grinding.

Perfect Design Offers Excellent Performance Innovative CNC ControlComponents

High Efficient, High Precision Mechanical Structure & Dialogue Operating System

Software Technology

Luren's generating grinding software includes gear data input, tooth flank modification, tool setting, corrections, and machining process edit ing. Each of these categories offers in te rac t ive d ia logues and error feedback for program assistance. The operator can eas i l y 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.

Workpiece Spindle & Grinding Spindle

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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 11.5 mm 0.45”

Helix Angle / Swivel Angle of Grinding Wheel ±45° ±45°

Max. Slide Travel of Z-axis 140 mm 5.5”

Max. rpm of Workpiece 600 rpm 600 rpm

Max. Drive Power of Workpiece 18.5 kW 25.06 Hp

Grinding Wheel Specifications

Min. / Max. Grinding Wheel Diameter

Root Diameter 260 mmOutside Diameter 320 mm

Root Diameter 10.2”Outside Diameter 12.6”

Max. rpm of Grinding Wheel 5,000 rpm 5,000 rpm

Max. Grinding Wheel Thickness 104 mm 4”

Max. Grinding Wheel Teeth Number 5 5

Max. Drive Power of Grinding Wheel 25 kW 33 Hp

Electric System

Voltage 3Ø 220V / 3Ø 380V

Current Requirement 150 Amp / 85 Amp

Ambient Temperature 50°F ~ 104°F / 10°C ~ 40°C

Max. Load of Machine 56 kVA

CNC Controller

SIEMENS SINUMERIK 840D sl

Dimension & Weight

Space RequirementL 2,550 x W 5,600 x H 2,550 mmL 8.5 x W 18.5 x H 8.5 ft

Weight of Basic Machine 5,500 kg 12,125 lbs

Note: The specifications are subject to the contract, as well as new technology and industrial advancements available.

Machining ProcessMachining 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.

Tool SettingThe 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.

CorrectionsThe 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.

The Best Accessories For Quality AssuranceSoftware Technology

Mechanical Specifications

Visual Design/ tel +886 4 37038989 10/2014

LUREN PRECISION CO., LTD.

www.luren.com.tw

sales@luren.com.tw

Shanghai Branch

Luren Precision Machinery(Shanghai) Co., Ltd.6A, Building 2, 401, CaoBao Rd.,Xuhui Dist., Shanghai, 200233 ChinaTe l : +86-21-5497-1105Fax: +86-21-5497-1095

Chicago Branch

Luren Precision Chicago Co., Ltd.707 Remington Road, Suite 1, Schaumburg, IL 60173, USATel : +1-847-882-1388Fax: +1-847-882-1933www.lurenusa.com

Osaka Branch

Luren Precision (Japan) Inc.O's 520 ATC Bldg North Wing 5F 2-1-10, Nanko-Kita, Suminoe, Osaka 559-0034, JapanTel : +81-6-6614-9739Fax: +81-6-6614-9741

HeadquartersNo 1-1, Li-Hsin 1st Rd., Hsinchu Science Park, Hsinchu 30078, TaiwanTe l : +886-3-578-6767Fax: +886-3-578-4933

Agent in KoreaWoosung Tech Corp., Ltd.Room#729, DuksanBesttel 69-1,Sangnam-Dong, Changwon City, KoreaTe l : +82-55-275-4894Fax: +82-55-281-9524www.woosung-tech.co.kr

Agent in KoreaIIshin Trading Co.155-2 Mundeok-ri Seonggeo-eupCheonan City, Chungnam 330-832, KoreaTe l : +82-41-569-2588Fax: +82-41-568-2788www.machinetools.com/tw/directory/view/ilshin-trading-co

Agent in TurkeyBimaksan CNC TakımTezgahları Ltd. Stiabdilpekçi Cad. YǘkselEmintaş San.Sit.62/E Bayrampaşa- IstanbulTel : +90-212-5444644Fax: +90-212-5678477www.bimaksan.com.tr

Agent in Taiwan (India)Essor International Inc.4F-8, 3, Lane 2, Gong Yeh 1st Rd., Taichung, TaiwanTe l : +886-4-2359-7440Fax: +886-4-2359-7446Cell Phone: 91-974-856-5209www.essor.com.tw