Bosch Rexroth | GWM Body-in-White Lighthouse Project GWM Body-in-White Lighthouse Project

GWM and Bosch have joined forces to create a benchmark factory for intelligent manufacturing with collaboration of "Lighthouse Factory" project.

CHINESE VERSION

Project Background

In response to the national strategic target of gradually realizing Industry 4.0, and to build a benchmark factory that can fully realize intelligent manufacturing and enhance the brand value and influence of GWM, GWM and Bosch signed a "Lighthouse Factory" cooperation project in June 2021 to be implemented in the second-phase body-in-white workshop of GWM's Xushui plant. Bosch Rexroth welding team collaborated with the GWM body-in-white workshop's process and production team to optimize the welding process and complete the commissioning work that meets the evaluation standards of a Lighthouse Factory.

Project Background
About "Lighthouse Factory"

About "Lighthouse Factory"

A "Lighthouse Factory" refers to a real production factory that has scaled the application of the Fourth Industrial Revolution technologies and successfully moved from a pilot phase to a large-scale integration phase. "Lighthouse Factories" have achieved remarkable results in the integrated application of cutting-edge technologies of the Fourth Industrial Revolution, realizing significant financial and operational benefits, and are leading enterprises that serve as global models.

Customer Introduction

About GWM

GWM was founded in 1984 and headquartered in Baoding City, Hebei Province. The company has gradually developed into a flagship Chinese SUV manufacturing brand, with more than 40 holding subsidiaries and over 70,000 employees. It has eight major domestic vehicle production bases and possesses independent supporting capabilities for core components such as engines and transmissions. It has been continuously selected as one of the Top 500 Chinese Enterprises, Top 10 Chinese Private Listed Companies, and the leader of the Top 100 Enterprises in Hebei Province, becoming one of the most outstanding national auto brands. It owns five brands: Haval, WEY, ORA, TANK, and Great Wall Pickup, with products covering three major categories: SUV, sedan, and pickup truck.

About GWM
Global Manufacturing Footprint

Global Manufacturing Footprint

In addition to its eight major production bases in China, GWM has also established KD factories in countries such as Ecuador, Malaysia, Tunisia, and Bulgaria.

Product Introduction

Bosch Rexroth has developed a medium-frequency welding controller that meets the manufacturing requirements of GWM's car bodies manufacturing requirements. Our advanced controller not only has welding functions such as welding point programming, electrode maintenance, dressing tool management, part number recording, sheet thickness and pressure management, and fault code output in the body spot welding process, but is also supplemented by Bosch Rexroth's medium-frequency adaptive welding function to monitor the energy of the weld nugget and ensure the quality control of the entire welding process.

Bosch Rexroth not only brings a high-quality product experience to GWM but is also committed to using its industry experience to help GWM establish process documents and databases that meet its own welding production requirements.

Hardware: Bosch Rexroth Medium Frequency Welding Controller

Hardware: Bosch Rexroth Medium Frequency Welding Controller

The welding robot sends welding commands to the welding controller. After executing the welding program, the controller transmits the welding data to the database of the welding software on the industrial computer.

MORE INFORMATION
Software: Bos6000 Welding Software

Software: Bos6000 Welding Software

The adaptive control function in the Bos6000 welding software can adjust the welding current and time based on resistance changes during the welding process, ensuring the strength of the weld spot.

Client Benefits

During the spot welding process, various unavoidable interferences such as gaps, shunts, and changes in welding position and posture can affect the total resistance of the welding circuit, leading to fluctuations in the energy of the weld nugget. With Bosch Rexroth's adaptive technology, you can monitor resistance fluctuations throughout the welding process and make adjustments and compensations in welding current and time to ensure the energy and strength requirements of the weld nugget during its formation.

Improve Welding Quality

Improve Welding Quality

The adaptive adjustment function can maximize the reliability of weld spot quality.

Reduce Spatter Rate and Energy Consumption

Reduce Spatter Rate and Energy Consumption

Due to the compensation feature of the adaptive adjustment function, a smaller welding specification can be used when setting welding parameters, significantly reducing the spatter rate and energy consumption in the welding workshop.

Save Operating Costs

Save Operating Costs

The improvement in weld spot quality can reduce the frequency and number of destructive tests. The reduction in spatter rate can decrease the demand for grinding stations and personnel in the workshop, saving both economic and labor costs.

Information Visualization

Information Visualization

The visualization system for welding equipment status can display real-time information such as the adaptive function's activation rate, spatter rate, and welding faults in the workshop. This allows process personnel to respond and handle issues at the first opportunity.

Improve Workshop Process Flow

Improve Workshop Process Flow

Before using the adaptive function, it is necessary to teach the weld spot position, electrode alignment, and the perpendicularity of the electrode to the sheet metal, and to calibrate the welding gun's current and pressure. These checks can improve the workshop's process flow and ensure the stability and control of the welding process.

Create a Dedicated Welding Parameter Library

Create a Dedicated Welding Parameter Library

Using the adaptive function requires summarizing and classifying information about the welded sheet materials and creating a material information table in the software. The standardization of welding parameters can help the workshop improve the efficiency of subsequent individual or overall optimizations. This also serves as a basis for establishing the user's own welding parameter library, which can be a valuable reference for subsequent projects.

Big Data Management

Big Data Management

The Bosch IoT data transmission tool can send welding process and result data to the server in real-time. Users can query the welding data of any weld spot on any part of a vehicle from months or even years ago on the server, achieving comprehensive big data management.

Real-time Status Monitoring

Real-time Status Monitoring

Activating the adaptive monitoring function allows for the monitoring of indicators such as current, voltage, resistance, energy, power, process stability, and weld spot strength score during the welding process. Process personnel can query this information in the logs and related history record interfaces of the BOS6000 welding software, which serves as a guide for optimizing welding parameters.

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Bosch Rexroth China

+86 400 880 7030

info@boschrexroth.com.cn

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