A Calculating Method for the Movement Contrail in the Operation of Dressing the Profile Shape of Grinding Wheel Used for Numerical Control Form Grinding Helical Cylinder Gear

2011 ◽  
Author(s):  
Hongxia He
Keyword(s):  
Numerical Control ◽  
Grinding Wheel ◽  
Profile Shape ◽  
Calculating Method ◽  
Form Grinding

A Calculating Method for the Movement Contrail in the Operation of Dressing the Profile Shape of Grinding Wheel Used for Numerical Control Form Grinding Spur Cylinder Gear

2010 ◽  
Vol 44-47 ◽  
pp. 2269-2273
Author(s):  
Hong Xia He ◽  
Hong Xia Liu
Keyword(s):  
Numerical Control ◽  
Transition Curve ◽  
Grinding Wheel ◽  
Axial Section ◽  
Profile Shape ◽  
Calculating Method ◽  
Form Grinding ◽  
Contour Machining ◽  
Involute Surface ◽  
Disc Grinding

This paper introduces the machining principles and characteristics of mold grinding cylinder gear as well as the composition of a form disc grinding wheel. By using contour machining principle，a mathematical model of form grinding the involute surface of a spur cylinder gear is established. And also a calculating formula used to dress the profile shape of the transition curve of grinding wheel is given by calculating. This provides a calculation method for dressing the profile shape of disc grinding wheel in the axial section used for the operation of numerical control form grinding spur cylinder gear. The example illustrates the method is effective in the use.

Research on Forms of Grinding Allowance Based on NC Form Grinding Cylinder Gear

2010 ◽  
Vol 42 ◽  
pp. 276-279
Author(s):  
Hong Xia He
Keyword(s):  
Numerical Control ◽  
Grinding Wheel ◽  
Axial Section ◽  
Gear Grinding ◽  
Form Grinding ◽  
Section Shape ◽  
Grinding Machine

The machining principle and characteristics of form grinding cylinder gear are introduced as well as the characteristics of form grinding machine in this paper. By analyzing and comparing three kinds of grinding allowance for cylinder gear grinding, a reasonable and effective axial section shape is determined in experience, which is a practical profile to shape the axial section of grinding wheel for numerical control grinding cylinder gears.

Secondary Development of Siemens CNC System for Large Grinding Machine

2013 ◽  
Vol 341-342 ◽  
pp. 1058-1061
Author(s):  
De Dong Han ◽  
Shi Jie Zhao ◽  
Hui Jiang ◽  
Hong Ya Fu
Keyword(s):  
System Development ◽  
Numerical Control ◽  
Secondary Development ◽  
Grinding Wheel ◽  
Cnc System ◽  
Control Software ◽  
Dynamic Link Library ◽  
Cylindrical Gear ◽  
Form Grinding ◽  
Grinding Machine

Form grinding is one of the most efficient processes for finish machining of gear wheels. This paper investigates the method of system development for wheel modification of involute cylindrical gear based on SINUMERIK 840D system and its OEM development package. The control software developed for form grinding is applied to dress form grinding wheel by using the numerical control dresser, and normal projection is adopted as the method to calculate the sectional shape of grinding wheel. The friendly interface of control software, edited by Visual Basic was developed to meet needs of users. Finally, personalized interface and processing methods are integrated and embedded in Siemens CNC system through Dynamic Link Library to implement parameterized automatic processing, which is more efficient in programming and machining.

scholarly journals Closed-Loop Feedback Flank Errors Correction of Topographic Modification of Helical Gears Based on Form Grinding

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Huiliang Wang ◽  
Jubo Li ◽  
Yang Gao ◽  
Jianjun Yang
Keyword(s):  
Closed Loop ◽  
Correction Method ◽  
Numerical Control ◽  
Grinding Wheel ◽  
Helical Gears ◽  
Form Grinding ◽  
Loop Feedback ◽  
Feedback Correction ◽  
Closed Loop Feedback ◽  
Tooth Flank

To increase quality, reduce heavy-duty gear noise, and avoid edge contact in manufacturing helical gears, a closed-loop feedback correction method in topographic modification tooth flank is proposed based on the gear form grinding. Equations of grinding wheel profile and grinding wheel additional radial motion are derived according to tooth segmented profile modification and longitudinal modification. Combined with gear form grinding kinematics principles, the equations of motion for each axis of five-axis computer numerical control forming grinding machine are established. Such topographical modification is achieved in gear form grinding with on-machine measurement. Based on a sensitivity analysis of polynomial coefficients of axis motion and the topographic flank errors by on-machine measuring, the corrections are determined through an optimization process that targets minimization of the tooth flank errors. A numerical example of gear grinding, including on-machine measurement and closed-loop feedback correction completing process, is presented. The validity of this flank correction method is demonstrated for tooth flank errors that are reduced. The approach is useful to precision manufacturing of spiral bevel and hypoid gears, too.

Mathematical Modeling for Screw Rotor Form Grinding on Vertical Multi-Axis Computerized Numerical Control Form Grinder

2013 ◽  
Vol 135 (5) ◽  
Author(s):  
Yu-Ren Wu ◽  
Chung-Wen Fan
Keyword(s):  
Numerical Control ◽  
Grinding Wheel ◽  
Noise Current ◽  
Form Grinding ◽  
Tooth Modification ◽  
Screw Rotor ◽  
Computerized Numerical Control ◽  
Rotor Tooth ◽  
Five Axis ◽  
Screw Rotors

The pair of screw rotors is a key element of a twin-screw compressor, and rotor tooth modification has gradually received attention because it can reduce operating compressor noise. Current rotor machining references are mainly related to forming tool design or abrasion of the “horizontal” grinder, but little attention has been paid to form grinding using a “vertical” grinder and simulating the machining flexibility of each grinder axis. Therefore, this paper established a general coordinate system for the screw rotor form grinding and connected it to a vertical five-axis computerized numerical control form grinder to simulate rotor grinding and tooth modification. Further, the influence of a form grinding wheel contour designed by different declination angles of a rotor tooth profile on a grinding rotor tooth and the influence of the motion parameter of each axis on the machining precision of the rotor and the tooth shape are proposed in this paper.

Computation of Parameters of a Form Grinding Wheel for Grinding of Shaving Cutter for Plunge Shaving of Topologically Modified Involute Pinion

2005 ◽  
Vol 127 (4) ◽  
pp. 819-828 ◽  
Author(s):  
Stephen P. Radzevich
Keyword(s):  
Transmission Error ◽  
Low Noise ◽  
Tooth Surface ◽  
Grinding Wheel ◽  
Cnc Machine ◽  
Surface Machining ◽  
Form Grinding ◽  
Novel Approach ◽  
Light Trucks ◽  
Part Surface

The paper is targeting on the finishing of precision gears for low-noise/noiseless transmission for cars and light trucks. Transmission error is the predominant cause of gear noise. The application of a topologically modified pinion results in reduction of transmission error up to two times. The required modification of the pinion tooth surface is provided on a plunge shaving operation with application of a shaving cutter of an appropriate design. A novel approach for computation of parameters of a form grinding wheel for grinding of the shaving cutter for plunge shaving of a precision involute pinion with topologically modified tooth surface is reported in the paper. The developed approach for computation of parameters of the form grinding wheel is focused on application of the shaving cutter grinder with a lack of CNC articulation. The problem under consideration is solved using the DG/K-based approach of part surface machining earlier developed by the author. (The DG/K-approach is based on fundamental results obtained in differential geometry of surfaces, and in kinematics of multi-parametric motion of a rigid body in E3 space (See Radzevich, S.P., Sculptured Surface Machining on Multi-Axis CNC Machine. Monograph, 1991, Vishcha Shkola Publishers, Kiev (in Russian). See also Radzevich, S.P., 2001, Fundamentals of Surface Machining. Monograph, Rastan, Kiev (in Russian).) An analytical solution to the problem is discussed in the paper. The solution has been used for developing software for the Mitsubishi ZA30CNC shaving cutter grinder for the needs of the automotive industry. Computer simulation reveals high accuracy of the ground shaving cutter.

An Estimation of Grinding Wheel Setting Error in Helical Gear Processing by Form Grinding.

1997 ◽  
Vol 63 (612) ◽  
pp. 2852-2858 ◽  
Author(s):  
Youichi KOBAYASHI ◽  
Noriteru NISHIDA ◽  
Yasuhiko OUGIYA ◽  
Hiroshi NAGATA
Keyword(s):  
Helical Gear ◽  
Grinding Wheel ◽  
Form Grinding ◽  
Setting Error

NC-Form Grinding of Carbon Fibre Reinforced Silicon Carbide Composite

2013 ◽  
Vol 535-536 ◽  
pp. 314-317 ◽  
Author(s):  
E. Uhlmann ◽  
T. Borsoi Klein ◽  
L. Schweitzer ◽  
A. Neubrand
Keyword(s):  
Silicon Carbide ◽  
Carbon Fibre ◽  
High Performance ◽  
Wear Behavior ◽  
Experimental Investigations ◽  
Grinding Wheel ◽  
Machining Parameters ◽  
Wheel Wear ◽  
Carbide Composite ◽  
Form Grinding

This paper presents an approach for the development and optimization of the NC-form grinding technology for an efficient machining of carbon fibre reinforced silicon carbide composite (C/SiC). The C/SiC properties, the importance and the necessity of the application of a high performance grinding process for the machining of this innovative composite material are introduced first. Then, the methodologies and the experimental investigations of NC-form grinding with the application of several machining parameters and three distinct bond types (vitrified, metal and synthetic resin) of diamond mounted points for the abrasive machining of C/SiC are presented. In order to monitor and analyze the process, grinding forces, surface integrity of ground workpieces and grinding wheel wear are investigated. The results of this paper provide new information regarding the wear behavior of grinding tools and the optimized conditions for grinding of C/SiC

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