Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (09): 143-148.doi: 10.13475/j.fzxb.20191205906

• Machinery & Accessories • Previous Articles     Next Articles

Motion analysis and parameter design of tool setting process in automatic scraping

DING Caihong(), LI Shucheng, WU Xiru   

  1. College of Mechanical Engineering, Donghua University, Shanghai 201620, China
  • Received:2019-12-26 Revised:2020-04-13 Online:2020-09-15 Published:2020-09-25

RichHTML

3

PDF (PC)

35

Abstract:

In order to make the scraper approach fast to the spinneret and press on the spinneret surface with no damage to the spinneret surface or the scraper in the process of the automatic scraping, this research was focused on the motion analysis and parameter planning of the tool setting motion. By analyzing the motion process of the automatic scraping system, the tool setting for scraper movement was described as a consistent motion with four key position nodes, and scheduled with a trapezoidal speed control curve. The contact mechanics model of scraper and spinneret was established according to Hertz contact theory. Through the qualitative analysis on scraper and spinneret damage, basis for the motion parameter design was set up so that the damage on the scraper would not occur during the motion. Consequently, the mathematical relationships of the setting speed of the scraper with force, deformation and total time in collision between the scraper and the spinneret surface, were individually obtained through the collision analysis. Taking a scraper with the radius curvature being 0.2 mm as an example, the maximum tool setting speed and the maximum collision force were calculated by MatLab under the condition that maximum damage allowed to the blade of the scraper was 0.1 mm, thus completing the motion parameter design. The results reported in this paper will also be used for the further structural design of the scraping component as a necessary design reference.

Key words: spinneret, automatic scraping, tool setting motion, speed control curve, collision analysis, Hertz contact theory

CLC Number: 

  • TS112.7

Fig.1

Automatic scraper robot system"

Fig.2

Scraper component"

Fig.3

Structural relationship between scraper and holder"

Fig.4

Schematic diagram of position during tool setting movement"

Fig.5

Speed control curve of tool setting motion"

Fig.6

Elastic (a) and plastic (b) deformation of microconvex bodies"

Tab.1

Basic parameters of scraper and spinneret"

名称 材料 弹性模量/GPa 泊松比 硬度/(N·mm-2) 粗糙度/μm 质量/kg
铲刀 H62 Y2 90 0.32 1 029 — 0.015
喷丝板 SUS 630 210 0.28 3 430 0.2 1.444

Fig.7

Contact form between scraper and spinneret surface"

Fig.8

Curve of Hertz contact force lag"

Fig.9

Analysis on relationship of parameters in collision between scraper and spinneret. (a) Maximum press-in deformation and collision speed; (b) Maximum collision force and collision speed;(c) Collision time and collision speed"

[1] 于勤, 王强, 范雪荣. 二醋酸纤维素纤维纺丝溶液的挤出胀大行为[J]. 纺织学报, 2015, 36(4):7-10.
YU Qin, WANG Qiang, FAN Xuerong. Die swell behavior of cellulose diacetate spinning dope[J]. Journal of Textile Research, 2015, 36(4):7-10.
[2] 周凤玲. 影响刮板质量因素的探讨[J]. 化纤与纺织技术, 2008(3):7-8.
ZHOU Fengling. Influencing factors of spinneret cleaning[J]. Chemical Fiber and Textile Technology, 2008(3):7-8.
[3] YU W D. Estimation of single-fibre tensile properties from the bundle tensile curve of polyester fibres[J]. Journal of Donghua University (English Edition), 2004, 21(1):18-23.
[4] 张家春. 一种自动清板系统:201610682902.7 [P]. 2016-08-17.
ZHANG Jiachun. An automatic plate cleaning system:201610682902.7[P]. 2016-08-17.
[5] 卢贤生. 一种喷丝面板清洁装置:201510932405.3[P]. 2015-12-15.
LU Xiansheng. A spinning panel cleaning device: 201510932405.3[P]. 2015-12-15.
[6] 宫川敬史, 川崎秀一, 本仪守之, 等. 纺丝喷嘴清理装置和纺丝机的清理方法:200410062876.5[P]. 2004-06-29.
TAKASHI Miyagawa, MORIYUKI Motogi, SHUICHI Kawasaki, et al. Spinning nozzle cleaning device and spinning machine cleaning method: 200410062876.5[P]. 2004-06-29.
[7] 王云飞, 郎需林, 张承瑞, 等. 高速并联机械手最优加减速控制算法研究[J]. 机械设计与制造, 2014(11):85-88.
WANG Yunfei, LANG Xulin, ZHANG Chengrui, et al. The optimal acceleration-seceleration control research of high-speed parallel manipulator[J]. Machinery Design and Manufacture, 2014(11):85-88.
[8] JACKSON R L, STREATOR J L. A multi-scale model for contact between rough surfaces[J]. Wear, 2007, 262(5/6):624-662.
doi: 10.1016/j.wear.2006.07.007
[9] 瓦伦丁 L 波波夫. 接触力学与摩擦学的原理及其应用[M]. 李强, 雒建斌, 译. 北京: 清华大学出版社, 2011: 47-50.
VALENTIN L P. Mechanics and friction physical principles and applications [M]. LI Qiang, LUO Jianbin, Translating. Beijing: Tsinghua University Press, 2011: 47-50.
[10] CHANG W R, ETSION I, BOGY D B. An elastic-plastic model for the contact of rough surfaces[J]. Journal of Tribology, 1987, 109(2):257-263.
doi: 10.1115/1.3261348
[11] KOGUTL, ETSION I. Elastic-plastic contact analysis of a sphere and a rigid flat[J]. Journal of Applied Mechanics, 2002, 69(5):657.
[12] LIU P, ZHAO H, HUANG K, et al. Research on normal contact stiffness of rough surface considering friction based on fractal theory[J]. Applied Surface Science, 2015, 349:43-48.
[13] 运睿德, 丁北. 考虑多尺度接触状态的新接触模型[J]. 机械工程学报, 2019(9):80-89.
YUN Ruide, DING Bei. New fractal contact model considered multi-scale levels[J]. Journal of Mechanical Engineering, 2019(9):80-89.
[14] 金栋平, 胡海岩. 碰撞振动与控制[M]. 3版. 北京: 科学出版社, 2005: 36-39.
JIN Dongping, HU Haiyan. Collision vibration and control[M]. 3rd ed. Beijing: Science Press, 2005: 36-39.
[15] LANKARANI H M, NIKRAVESH P E. Continuous contact force models for impact analysis in multibody systems[J]. Nonlinear Dynamics, 1994, 5(2):193-207.
[1] DING Caihong, LI Shucheng, JI Xingyue. Design of automatic scraping component based on buffering strategy for tool setting [J]. Journal of Textile Research, 2020, 41(04): 155-160.
[2] . Modeling and simulation of transverse motion error of guide bar shogging system of warp knitting machine [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(08): 130-137.
[3] . Route planning for concentric spinneret inspection based on improved ant colony algorithm [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(11): 124-130.
[4] . Die swell behavior of cellulose diacetate spinning dope [J]. Journal of Textile Research, 2015, 36(04): 7-10.
[5] . Model of radial length of rubber blanket in extrusion area for preshrinking machine [J]. JOURNAL OF TEXTILE RESEARCH, 2012, 33(12): 85-88.
[6] LI Chunlei;CUI Bin;WU Xingkuan;YANG Chongchang;FENG Pei. Study on auto-detecting of spinneret by machine vision [J]. JOURNAL OF TEXTILE RESEARCH, 2010, 31(11): 126-130.
[7] ZHANG Xiao-ying;PAN Zhi-juan;QIAN Dan-na;SHEN Wen-tao. Configuration of electrospun polycaprolactam nano-scale fibers [J]. JOURNAL OF TEXTILE RESEARCH, 2006, 27(7): 13-15.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
京ICP备14006648号
Copyright 2021 © Editorial office of Journal of Textile Research
Supported by Beijing Magtech Co.Ltd