A Theoretical Model of Grinding Force and its Simulation

2013 ◽  
Vol 690-693 ◽  
pp. 2395-2402 ◽  
Author(s):  
De Lin Qin ◽  
Feng Wang ◽  
Fang Jian Xi ◽  
Zhi Feng Liu
Keyword(s):  
High Speed ◽  
Mutual Authentication ◽  
Grinding Force ◽  
Grinding Wheel ◽  
Force Model ◽  
Force Coefficient ◽  
Element Analysis ◽  
Cylindrical Grinding ◽  
Grinding Force Model ◽  
Force Calculation

Aiming at the axle material 30CrMoA high speed cylindrical grinding force calculation problems, a consideration of plowing force grinding force model is established based on the Werner’s theory model of grinding force, and the friction force and plowing force coefficient is defined as variable parameters. On the basis of the finite element analysis software DEFORM-3D, a high speed cylindrical grinding simulation model method is presented.Through the theoretical value and simulation value contrast, a mutual authentication of grinding force model is proposed. According to the simulation analysis results of grinding force and grinding wheel speed, grinding depth and the relationship between the workpiece speed, theoretical and technical guidance for the grinding force calculation and the selection of grinding process parameters are provided.

Study on Radial Deformation of CBN Grinding Wheel Considering Centrifugal Force and Grinding Heat

2013 ◽  
Vol 797 ◽  
pp. 500-504
Author(s):  
Xue Zhi Wang ◽  
Wan Shan Wang ◽  
Tian Biao Yu ◽  
Na Yuan ◽  
Xue Sun
Keyword(s):  
Finite Element ◽  
Centrifugal Force ◽  
High Speed ◽  
Grinding Force ◽  
Grinding Wheel ◽  
Machining Accuracy ◽  
Radial Deformation ◽  
Element Analysis ◽  
Grinding Speed ◽  
Cbn Grinding Wheel

For ultra-high-speed grinding, the deformation of grinding wheel has a greater impact on the machining accuracy. Finite element method was used to study the radial deformation of the CBN grinding wheel considering centrifugal force and grinding heat. The study shows that the effects of centrifugal force and grinding heat are same magnitude, and the proportion changes with the change of grinding speed and grinding force. By finite element analysis, it is possible to solve the grinding wheel the radial deformation and grinding temperature under different grinding speed and grinding force, and it also provides theoretical support for predicting the machining accuracy, compensating precision and avoiding grinding burn.

The X-C Linkage Grinding Force Model in Cam Grinding

2016 ◽  
Vol 693 ◽  
pp. 1187-1194
Author(s):  
Xiu Mei Chen ◽  
Qiu Shi Han ◽  
Bao Ying Peng ◽  
Qi Guang Li
Keyword(s):  
Theoretical Basis ◽  
Mechanical Analysis ◽  
Grinding Force ◽  
Grinding Wheel ◽  
Force Model ◽  
Grinding Force Model ◽  
Cam Profile ◽  
Contour Accuracy ◽  
Servo Tracking ◽  
Grinding Machine

In cam grinding process, the grinding force changes with the change of cam contour, and its change leads to create the error of X-C linkage servo-tracking position, all of the factors reduce the cam the contour accuracy. To improve the accuracy of the cam profile, and research the effect of X-C axis servo tracking, the key vector of grinding force to the position is proposed, in which the factors have been considered including the grinding depth, curvature change, cam width, length and other effects. According to the mechanical analysis of cam and grinding wheel, a cam grinding XC-axis grinding force model is established. With the flat-bottomed follower cam as an example, the grinding force of X axis and C axis is calculated. The cam grinding experiment was conducted in the grinding machine, the tangential grinding force and normal grinding force were obtained and the model was verified. The grinding force mathematical model of X-C linkage provides the theoretical basis for the servo tracking position of X-C linkage grinding.

scholarly journals A New Grinding Force Model for Micro Grinding RB-SiC Ceramic with Grinding Wheel Topography as an Input

Micromachines ◽  
2018 ◽  
Vol 9 (8) ◽  
pp. 368 ◽  
Author(s):  
Zhipeng Li ◽  
Feihu Zhang ◽  
Xichun Luo ◽  
Xiaoguang Guo ◽  
Yukui Cai ◽  
...  
Keyword(s):  
Brittle Fracture ◽  
Grinding Force ◽  
Grinding Wheel ◽  
Force Model ◽  
Sic Ceramics ◽  
Grinding Force Model ◽  
Proposed Model ◽  
Wheel Topography ◽  
Grinding Wheel Topography ◽  
Force Components

The ability to predict the grinding force for hard and brittle materials is important to optimize and control the grinding process. However, it is a difficult task to establish a comprehensive grinding force model that takes into account the brittle fracture, grinding conditions, and random distribution of the grinding wheel topography. Therefore, this study developed a new grinding force model for micro-grinding of reaction-bonded silicon carbide (RB-SiC) ceramics. First, the grinding force components and grinding trajectory were analysed based on the critical depth of rubbing, ploughing, and brittle fracture. Afterwards, the corresponding individual grain force were established and the total grinding force was derived through incorporating the single grain force with dynamic cutting grains. Finally, a series of calibration and validation experiments were conducted to obtain the empirical coefficient and verify the accuracy of the model. It was found that ploughing and fracture were the dominate removal modes, which illustrate that the force components decomposed are correct. Furthermore, the values predicted according to the proposed model are consistent with the experimental data, with the average deviation of 6.793% and 8.926% for the normal and tangential force, respectively. This suggests that the proposed model is acceptable and can be used to simulate the grinding force for RB-SiC ceramics in practice.

Study of Grinding Force for Internal Cylinder of Ultrasonic ELID Composite Grinding

2013 ◽  
Vol 797 ◽  
pp. 733-739
Author(s):  
Bo Zhao ◽  
Ya Min Li ◽  
Ping Yan Bian
Keyword(s):  
Electrical Current ◽  
Contact Length ◽  
Grinding Force ◽  
Grinding Wheel ◽  
Force Model ◽  
Axial Vibration ◽  
Kinematic Equation ◽  
Cylindrical Grinding ◽  
Internal Cylindrical Grinding ◽  
Motion Characteristics

In order to reveal the theoretical nature of ultrasonic ELID composite grinding which is an efficient grinding technology, this paper theoretically analyzes a single grains motion characteristics in the process of internal cylindrical grinding under axial vibration and established a single grits kinematic equation. Then the grits trajectory is draw by matlab, and the contact length of the grinding wheel and the workpiece is achieved. At the same time the electrolysis parameters are introduced into the dynamic number of effective grits with analysis its electrochemical action. Thereby a force model for the ultrasonic ELID composite internal cylindrical grinding is established. Through analysis the model it is easy to find the force is fluctuated periodically with electrical current changing.

Study on Edge Contact Area and Surface Integrity of Workpiece in Point Grinding Process

2009 ◽  
Vol 407-408 ◽  
pp. 577-581
Author(s):  
Shi Chao Xiu ◽  
Zhi Jie Geng ◽  
Guang Qi Cai
Keyword(s):  
Surface Integrity ◽  
Contact Area ◽  
High Speed ◽  
Ground Surface ◽  
Depth Of Cut ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Edge Contact ◽  
Cylindrical Grinding ◽  
Theoretic Foundations

During cylindrical grinding process, the geometric configuration and size of the edge contact area between the grinding wheel and workpiece have the heavy effects on the workpiece surface integrity. In consideration of the differences between the point grinding and the conventional high speed cylindrical grinding, the geometric and mathematic models of the edge contact area in point grinding were established. Based on the models, the numerical simulation for the edge contact area was performed. By means of the point grinding experiment, the effect mechanism of the edge contact area on the ground surface integrity was investigated. These will offer the applied theoretic foundations for optimizing the point grinding angles, depth of cut, wheel and workpiece speed, geometrical configuration and size of CBN wheel and some other grinding parameters in point grinding process.

An improved robotic abrasive belt grinding force model considering the effects of cut-in and cut-off

2019 ◽  
Vol 37 ◽  
pp. 496-508 ◽  
Author(s):  
Sijie Yan ◽  
Xiaohu Xu ◽  
Zeyuan Yang ◽  
Dahu Zhu ◽  
Han Ding
Keyword(s):  
Grinding Force ◽  
Force Model ◽  
Belt Grinding ◽  
Abrasive Belt ◽  
Grinding Force Model

Simulation of Finite Element Analysis for Cutting Force of High-Speed Dry Gear Milling by Flying Cutter

2011 ◽  
Vol 86 ◽  
pp. 100-103
Author(s):  
Qian Guo ◽  
Chao Lin ◽  
Wei Quan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Comparative Analysis ◽  
Cutting Force ◽  
High Speed ◽  
Cutting Parameters ◽  
Force Model ◽  
Cutting Force Model ◽  
Element Analysis ◽  
Gear Hobbing

This paper makes the emulate experimental research of cutting force in high-speed dry gear milling by flying cutter with finite element analysis method by using the established cutting force model yet, makes the comparative analysis for the result of simulation experiment and theoretical calculation, verifies the correctness of cutting force model and calculation method, makes the comparative analysis for the influencing relations and changing laws of cutting force and cutting parameters and so many factors, and reveals the cutting mechanism of high-speed dry gear milling by flying cutter initially. By the research of this paper, it provides basic theory for subsequent cutting machine technology of high-speed dry gear hobbing, and establishes the theoretical basis for the spread and exploitation of this technology.

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