CIMT2021 part of the cylindrical gear machining machine exhibits review

I. Overview

From April 12 to 17, 2021, the 17th China International Machine Tool Exhibition (CIMT2021) was successfully held in Beijing, with more than 1,500 manufacturers at home and abroad exhibiting the latest achievements and development trends of the machine tool industry.

At the exhibition site, the author statistics about more than 30 exhibitors of cylindrical gear processing machine tools, of which about 20 domestic enterprises, about 10 overseas enterprises, displayed about 50 sets of cylindrical gear processing equipment. The exhibition machine tools include: CNC gear hobbing machine, CNC gear turning machine (tooth shaving machine), CNC gear shaper machine, CNC gear grinding machine, CNC gear honing machine, CNC chamfering machine and other cylindrical gear processing machine.

Key exhibitors at home and abroad are: Chongqing Machine Tool (Group) Co., LTD., Qinchuan Machine Tool Group Co., LTD., Nanjing Second Gear Machine Tool Co., LTD., Yichang Chang Machine Technology Co., LTD., Beijing Ruoken Automation Equipment Co., LTD., Esienti (Suzhou) Machine Tool Co., LTD., Liebherr, EMAG (China) Machinery Co., LTD. (EMAG), KAP (KAP) P), Germany DVS-PITTLER, Switzerland Reishauer (Reishauer), Japan Caxi Fuji, Japan Mitsubishi Heavy Industries, etc., Also emerged Zhejiang Lawrence Machine tool Co., LTD., Zhongshan Maret Intelligent Equipment Co., LTD., Nanjing Kangni Precision Machinery Co., LTD., Shanghai Xinghe Electromechanical Co., LTD., Fuqing Yongyulai gear Co., Ltd. and other emerging enterprises.

2. Main technical features and development trends of exhibits

1. Application of direct drive technology

In order to improve the transmission accuracy, stiffness, smoothness and dynamic characteristics of the machine tool, direct drive technology is widely used in the spindle drive, such as Mitsubishi Heavy Industries GE15FR, Liebherr LGG280 using direct drive technology tool and workpiece spindle, Chongqing Machine Tool Group YH3120CNC and Y3136CNC machine tools.

2. Develop in the direction of high speed, high efficiency and high precision

Due to the continuous improvement of social production level, high-speed and high-efficiency machine tools with fast processing speed and short auxiliary time have become the focus of attention in the gear machine tool market.

This exhibition exhibited the main hobbing machine manufacturers exhibits, hob spindle speed are above 1400r/min, to meet the requirements of high-speed and efficient processing; The exhibits exhibited by the main hobbing machine and gear grinding machine manufacturers can greatly improve the processing efficiency of the machine tool by optimizing the operation of the machine tool and compressing the auxiliary time of the non-processing period such as workpiece loading and unloading and workpiece exchange; In the pursuit of high precision and reliability of machine tools while being high-speed and efficient, the CNC hobbing machine exhibited by Mitsubishi Heavy Industries and Kashifuji has a processing accuracy of GB10095.1-2008 of 3-6 levels.

Step 3 Be smart

With the development needs of unmanned factories and intelligent manufacturing, intelligent gear hobbing machine will become an inevitable trend in the future development of gear hobbing machine.

This exhibition Qinchuan machine tool launched a YK3126 gear hobbing machine with basic intelligent functions, with a series of intelligent function applications such as machine health status assessment, intelligent surface processing, dynamic contour error compensation, thermal error compensation, tool break detection, tool life management, remote operation and maintenance and monitoring.

4. Improve product specifications and functions to meet user processing requirements

At this exhibition, the machine tool manufacturers have introduced many new models for the changes in the user's processing technology, or improve the specifications and performance on the basis of the original machine tools.

The Y3136CNC machine tool exhibited by Chongqing Machine Tool Group, the workpiece with modulus of 16mm, can reach the 8-level accuracy of GB10095.1-2008 with one knife cutting; Mitsubishi Heavy Industries GE15FR, Kashi Fuji KN80

High

Accuracy is dedicated to high precision small modulus flexible gear used in precision reducer of machining robot, which can realize ISO3 ~ 6 gear machining. Chongqing Machine Tool Group's YS7232A, Leshaur's RZ160KWS, Liebherr's LGG280, are all high-speed gear grinding machines with small diameter worm grinding wheels, for double gears that may interfere with the grinding wheel.

5. Gear grinding has become the main process of gear finishing

With the development of automotive and robot industries, the requirements for gear processing technology are getting higher and higher, and grinding has become the main process scheme for gear finishing. At this exhibition, the author did not see the display of the shaving machine, and the grinding machine has become a focus of the exhibition of various enterprises, reflecting this direction of development.

6. CNC gear turning machine is widely used in step tooth and internal tooth processing

With the development of control technology and the advancement of tool material technology, the high efficiency and high precision advantages of turning (scraping) technology for step teeth and internal teeth machining have been reflected. At the same time, with the further upgrading of market demand for robot reducers and electric vehicles, gear technology has been focused on research and development by the majority of machine tool manufacturing enterprises in recent years. In this exhibition, Chongqing Machine tool, Nanjing second machine, Yichang Chang Machine Technology, Zhejiang Lawrence machine tool, PITTLER and other companies exhibited CNC gear machines.