Study on automatic assembly technology for complicated gear trains based on topological unit

2011 ◽  
Author(s):  
Xiaoying Shi ◽  
Xiangfeng Meng
Keyword(s):  
Automatic Assembly ◽  
Gear Trains ◽  
Assembly Technology

scholarly journals An Assembly Status Identification Method for Wedge Belt Automatic Assembly Based on Dynamic Feature

2021 ◽  
Vol 2095 (1) ◽  
pp. 012047
Author(s):  
Qijian Zhao ◽  
Yizhe Wang ◽  
Pengfei Sun ◽  
Lianxin Zhang
Keyword(s):  
Dynamic Model ◽  
Production Quality ◽  
Dynamic Feature ◽  
Automatic Assembly ◽  
Dynamic Features ◽  
Acceleration Signal ◽  
Identification Method ◽  
Assembly Technology

Abstract The assembly of the wedge belt joint relies on the sense and experience of human, which limit the application of automatic assembly technology. In order to implement automatic assembly for higher production quality and efficiency, an assembly status identification method based on dynamic feature is proposed. The contact status of the wedge belt in assembly is analysed and the dynamic model is formulated. The dynamic features for identification are compared and the signal of acceleration is selected. The identification method of assembly status is proposed based on the acceleration signal. An experiment is designed to verify the identification method. The experiment result shows that the amplifier of the acceleration decreases much more sharply as it fits well. The proposed identification method is effective and stable, which could be used for the automatic assembly.

Digital Automatic Assembly Technology of Stubble-Cutting Equipment of No-Till Planter

2013 ◽  
Vol 423-426 ◽  
pp. 2907-2910
Author(s):  
Xiao Hu Bai ◽  
Fang Li ◽  
Jing Lin
Keyword(s):  
Coordinate System ◽  
Automatic Assembly ◽  
Coordinate Systems ◽  
Improve Design ◽  
No Till ◽  
Cutting Equipment ◽  
Correct Location ◽  
System Constraint ◽  
Assembly Technology ◽  
Operation Results

In the process of product design, automatic assembly technology can shorten the time spent on assembling all parts into a virtual assembly. In this paper, a digital automatic assembly technology based on coordinate system constraint was put forward. Appropriate coordinate systems which can ensure the correct location of part were built during the establishment of part model through the datum tool. The naming method of coordinate system was prescribed. All coordinate systems in every part of stubble-cutting equipment were established. The steps of realizing automatic assembly were explained in detail. The functions Pro/Toolkit provides were used to program. The operation results show that the technology can reduce repetitive work, improve design efficiency and provide a convenient tool for the design of stubble-cutting equipment of no-till planter.

An Automatic Assembly Technology for Perforated Discs Based on Contour Optimized Hough Circle Transform

2013 ◽  
Vol 459 ◽  
pp. 297-303 ◽  
Author(s):  
Ce Shang ◽  
Guo Liang Tao
Keyword(s):  
Image Processing ◽  
Computer Vision ◽  
Stepper Motor ◽  
Assembly System ◽  
Labor Intensity ◽  
Automatic Assembly ◽  
Detection Error ◽  
Automatic Production ◽  
Assembly Technology ◽  
Low Efficiency

Aiming at the low efficiency of handwork and high labor intensity, an automatic solution for perforated discs assembly is developed based on computer vision. This technology consists of the processes of material feeding, parts handling, circle detecting and assembling. The mechatronic structure includes the pneumatic elements and electric actuators that controlled by PLC and stepper motor drivers. This method has solved the problem of the large cost of human force since this product has a big industrial production. Meanwhile, a contour optimized Hough circle transform (CHCT) is proposed. It can overcome the standard Hough circle transform (HCT) s disadvantages, such as redundant calculation and probability of failures. It enhances the reliability in order to satisfy the demand of industrial automatic production. The image processing takes only about 60ms and reaches 100% success rate with a small detection error. This method also has the generality for the similar assembly system based on machine vision.

An automated assembly technology for large mobile radar antenna

2016 ◽  
Vol 36 (4) ◽  
pp. 429-438 ◽  
Author(s):  
Gaoliang Peng ◽  
Yu Sun ◽  
Rui Han ◽  
Chuanhao Li
Keyword(s):  
Large Scale ◽  
Outdoor Environment ◽  
Automatic Assembly ◽  
Accurate Identification ◽  
Content Type ◽  
Operation Conditions ◽  
Assembly Technology ◽  
Three Degree Of Freedom ◽  
Radar Antenna ◽  
Lifting Equipment

Purpose Large-scale mobile radars are still erected manually by using lifting equipment, which often fails to meet the requirements on precision, quality and efficiency in the erecting process. This paper aims to introduce techniques for automatic assembly of large mobile radar antenna. Design/methodology/approach A large-scale metrology system for accurate identification of the positions and orientation of the radar antenna components is presented. A novel three-degree-of-freedom parallel mechanism is designed to realize orientation adjustment of three axes synchronous, and, thus guarantees the efficiency and accuracy of positioning process. Findings The system described in this paper is practicable in outdoor environment and provides a holistic solution that gives full consideration of the operation conditions and the environmental influences. In performance evaluation tests, the measured absolute accuracy is less than ±1 mm and repeatability is less than ±0.5 mm in the positioning task for 10 × 3 m large antenna. Originality/value This paper presents a new concept of an automatic assembly technology for the large radar antenna application.

Application of Automatic Assembly Technology Based on BRep on Inventor

2011 ◽  
Vol 99-100 ◽  
pp. 906-910
Author(s):  
Wei Bo Yin ◽  
Lu Shuang Wei ◽  
Qun Wei
Keyword(s):  
New Method ◽  
Secondary Development ◽  
Automatic Assembly ◽  
3D Design ◽  
Assembly Technology

A new method of automatic assembly technology (AAT )is proposed on 3D design platform, which marks the primitives by BRep and save the data into the Xdata by BRep, then gets the elements by indexing the Xdata and assemblies them through assembly relationships in assembly, which is adopt in secondary development of Autodesk Inventor with better effort.

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