It is not an exaggeration to describe the role of gripping and gripping systems in building an unmanned, flexible, and fully automated production line by using ' Within the plant of Ningxia Little Giant Co., Ltd. in Yinchuan, Jiangnan, there are five completely automatic production lines in the pre-acceptance stage that will fully explain this unique feature of SCHUNK products.
The automated production line is part of a joint venture between GACC and Mazak. The project is in the pre-acceptance stage and is expected to be fully delivered by the end of 2017. As more than half a million vehicles have been built up to date Of the sales, the project came in. In the project bidding, Ningxia Giant Machine Tool Co., Ltd. with its strong production capacity (capacity of 1,500 units / year) and cost-effective design programs finally come to the fore. The project mainly consists of 74 small FF-5000 high-speed horizontal machining centers, 18 high-speed vertical machining centers of VCS430A, 9 MRT truss robots and 9 FANUC robots, and the overall project possesses flexible production capacity. In order to realize the rapid change of production line, , The claw adopts quick change module, including 18 pairs of xerox zero point positioning system, quick-swap 150 kg load side robot side and tool side 27, 64 manipulator and production line using nearly 400 HSK-A 63 hydraulic shank In order to achieve the key hole finishing and high precision tool change quickly.'This is the first time for Xuk to supply such a large number of hydraulic housings for a single project in the domestic automotive industry. According to Mr. Zhu Jiankun, Sales Manager of Precision Machinery Trading (Shanghai) Co., Ltd. Throughout the course of the development of Xuk, it is not difficult to find that the hydraulic shank has a pivotal position and now, Xuker successfully pushed it to the global market and achieved hydraulic Industrialization of shank.
Xiong Ke robot quick change device
In addition to the hydraulic shanks, Xerox gripping technology and gripping systems are well used in this project, and as a result, the fully automated production line mentioned at the beginning of this article is highly flexible and unmanned. "At In the past, if you want to process different parts, fixture replacement takes about 1--2 days, now not only can achieve 0.5 h unitary conversion, but also to micron-level positioning accuracy. 'Zhu Jingli said. Then, the total production line Designer Mr. Li Yurong, Ningxia Giant Machine Tool Co., Ltd. is also an expert engineer of engineering under the leadership of the author fortunate enough to come into contact with this production line.
Xerox clamping technology and crawler system in the processing with efficient coordination
According to expert Li, the project involves two transmission case (automatic transmission, manual transmission) production line, two engine block production line, a connecting rod production, each production line can be flexible production of five different parts, of which Shell, cylinder line from the expected to finished without any human intervention (interference), fully realized the flexible, unmanned automatic production. AB line production line with the body wiring mode, the use of ground rail robot loading and unloading , The cylinder line truss manipulator type loading and unloading, the production of wiring according to the needs of the robot set quickly change, manipulator and fixture sub-board waiting station design.
Figure 1 robots through the zero positioning system grab clamp board
In order to meet the requirements of customers in a variety of compatible production lines in an automatic online, the robot is equipped with two kinds of grasping mechanism: one for grasping the workpiece and the other for the different types of workpieces corresponding to different fixtures, Structure, a unified fixture mother board, multiple fixture sub-board corresponding to different types of workpieces.Replacement fixture sub-board, the robot used the fixture grasping mechanism equipped with XUNKER VERO-S zero positioning dual module, and fixture sub-board Of the positioning pin with the clamping, so that it quickly moved to the internal machine.Robot robotic exchange mechanism by the Swans SWS rapid changeover device achieved by the zero positioning system to achieve different fixture daughter board and the rapid replacement of the motherboard, positioning and lock Tight tight. Giant Machine Tool Co., Ltd. Automation Division Wu Weitian, an expert engineer has carried out a detailed description of this.In fact, the production line into production capacity of 1.67 to achieve the process capability, the comprehensive turn-on rate of 88% or more, this is a Comprehensive multi-factor results of joint efforts which Guangzhou Automobile passenger car engine plant efficient management is to protect the small giant Of high-precision, high-reliability equipment is the foundation, of course, Xuk's products and technology also play a key role.Now only a key to switch to replace the fixture, completely replaced the previous part of the need for manual operation, to achieve a full range of Unmanned, flexible, automated and operational stability and reliability, thereby enhancing the production efficiency and capacity.
Figure 2 gearbox housing production line
Achieve micron-level positioning accuracy
The entire process is very consistent, thanks to the perfect match between machine tools, robots and fixtures, from Xiong Ke robot quick change, zero positioning system and the robot's flexible convergence and precision positioning. 'Quick exchange of the robot side and the tool side Like a snap connection, the same way ... to achieve electricity, gas docking, locking. 'Lee experts through the image of the metaphor to the author describes the work of the device SWS switch device,' Robots quick switch can quickly manipulator, Other actuators, etc., can significantly reduce, or even completely replace the manual operation. "Zhujing Li added.
Figure 3 Two-finger and two-finger robots are grabbing the workpiece
In the process of switching the clamp plate, the zero point positioning system of Xiong Ke acts similar to the grabbing of the manipulator.Using the VERO-S zero point positioning system, positioning and clamping can be achieved with only one operation and the positioning accuracy of micrometer This will effectively shorten the loading time of the workpiece, thus improving the utilization rate of the machine tool and improving the production rationality of single batch.Especially in the production of many kinds of workpieces, it has obvious cost advantage, which can shorten up to 90% Of the process aids Zhu said: "Zero positioning system combines two basic functions, through the positioning pin to achieve the center position; through the two clamping slider to achieve the lock, is the perfect combination of machine accuracy and cost.
When grasping the workpiece, in order to limit the degree of freedom of movement of the workpiece, that is to avoid over positioning and rotation, the two-finger and three-finger robots need to grab the workpiece at the same time. 'This project selects PGN-plus and PZN-plus three fingers robots, The series uses a patented, multi-tooth guide rail, which can get greater grip and higher torque. 'Zhu Jingli introduced,' the project selected dustproof and sealed design, according to the specific needs of the can also provide resistance High temperature, corrosion-resistant robot selection.
In this project, Little Giant uses the FF-5000, a high-speed horizontal machining center designed and manufactured by Mazak for mass production of automotive components. "The compact machine family offers high-speed feed rates and high accelerations to reduce Auxiliary time, at the same time equipment with A axis, B axis, AB axis option to choose, namely with the specifications of the three models to expand the production line with A axis, B axis device combination to reduce the part of the conversion gesture, reduce robot or manipulator parts pose Designing the structural burden, flexibility to adjust the mechanical layout of the production line, simplifying the compatibility design, and optimizing the robot or manipulator execution structure are all advantages of the FF-5000 serialized design, which is the production line. "Lee experts said.
Figure 4 Xuk provides the project with a large number of HSK-A 63 hydraulic shanks
Talk about future cooperation
The ever-shrinking product life cycle, the rapidly expanding range of products, the ever-increasing precision requirements, and the ever-increasing cost pressures are affecting modern production. Recalling the original choice of Xuk as a partner in the project, Lee said : 'Xunke can accurately grasp the direction of clamping needs in the field of machinery, fully meet the current short product replacement cycle needs, but also can not think of technicians think of ideas into reality, but also in grip technology and crawling The system is popular with customers. "Rich standard module programs, valuable experience in custom solutions, and the unique combination of clamping technology and clamping systems that only Xuker can provide, have brought significant benefits to users.
In fact, Mazak and Xuk have been maintaining a good relationship of cooperation, the automotive industry is the focus of attention on both sides have a common customer base, which inevitably drives the cooperation between the two more and more closely. And future prospects for cooperation, Lee experts said: 'Now the machining industry is increasingly in demand for automation, and Xunke in clamping technology and capture systems have a very comprehensive system, the accuracy and durability of their products In the industry, second to none, I believe the future we will have more in-depth cooperation. '