Design of Programmable High-Cost-Performance Gantry-Type Loading and Unloading Manipulator

Lijie Zhou; Chunlin Cai; Ruilin Hao

doi:10.62051/ijmee.v8n3.05

Authors

Lijie Zhou
Chunlin Cai
Ruilin Hao

DOI:

https://doi.org/10.62051/ijmee.v8n3.05

Keywords:

Gantry Manipulator, Loading and Unloading, Programmable Control, PLC

Abstract

To meet the demand for low-cost, highly reliable, and easily programmable loading and unloading equipment in automated CNC machining production lines, this paper designs a three-axis gantry-type loading and unloading manipulator. The whole machine adopts a gantry frame and a Cartesian coordinate structure, with stepper motors and synchronous belts as the transmission scheme, and is equipped with a pneumatic clamping end effector to realize the automatic transfer of workpieces between machine tools and silos. The control system is built with a PLC, stepper motor drivers and a touch screen, supporting touch screen programming, point-to-point motion, signal input and output control, delay control and other functions. The human-machine interaction system adopts a touch screen for visual operation, reducing the threshold of debugging and use. Through lightweight structural design, modular component design and simplified programming design, on the premise of ensuring a repeated positioning accuracy of ±0.1 mm and stable and reliable operation, the overall cost and deployment cycle of the machine are significantly reduced. Prototype tests show that the manipulator meets the requirements of flexible processing for small and medium batch production and has high engineering application value.

References

[1] Müller A, Schmidt B, Wagner C. Design and optimization of gantry robots for automated loading and unloading of CNC machines[J]. Journal of Manufacturing Systems, 2018,47:189-201.

[2] Park J H, Lee S J, Kim J H. PLC-based motion control system for a 3-axis Cartesian robot with stepper motors[J]. International Journal of Precision Engineering and Manufacturing, 2017,18(5):689-696.

[3] Zhang L, Wang Y, Liu X. Design of human-machine interaction system for industrial manipulators based on touch screen[J]. Computers & Industrial Engineering, 2019,130:502-510.

[4] Garcia R, Fernandez J, Perez M. Lightweight design of gantry loading robot for small and medium-sized manufacturing enterprises[J]. Robotics and Computer-Integrated Manufacturing, 2020,63:101865.

[5] Li Y, Chen G, Zhang H. Prototype development and performance testing of a low-cost gantry manipulator for CNC machine tool tending[J]. Journal of Mechanical Science and Technology, 2021,35(2):789-798.

[6] Rajkumar R, Vinodh S, Jayakumar V. Automation of material handling in CNC machining using Cartesian robots: A case study[J]. Procedia Manufacturing, 2018,25:364-371.

[7] Schäfer T, Hesselbach J, Brecher C. Gantry robot systems for flexible automation in small batch production[J]. CIRP Annals - Manufacturing Technology, 2016,65(1):457-460.

[8] Nof S Y, Wang L, Liu A. Industrial robotics: Technology, programming, and applications[J]. Wiley Interdisciplinary Reviews: Data Mining and Knowledge Discovery, 2017,7(3): e1209.

[9] Krüger J, Verl A, Pawletta T. Cost-benefit analysis of industrial robot systems for small and medium enterprises[J]. Journal of Cleaner Production, 2018,187:623-634.

[10] Chen L, Yang Y, Zhang M. Programmable control system design for gantry loading and unloading manipulator[J]. Control Engineering Practice, 2019,86:104102.

[11] Liu J, Hu Z, Yang H. Optimal design of a high cost-performance gantry robot for automated material handling[J]. Journal of Intelligent & Robotic Systems, 2020,97(2):389-402.

[12] Tang X, Li J, Zhao Q. Flexible design of CNC machine tool tending robot with easy programming for small batch production[J]. Journal of Manufacturing Processes, 2021,66:588-597.

[13] Wang F, Zhang S, Li D. Static analysis and structural optimization of gantry robot frame based on finite element method[J]. Applied Mechanics and Materials, 2017,841:213-218.