The New Method in Scraping the Back Off Surface of Side Edge of the Carbide Hob

2011 ◽  
Vol 694 ◽  
pp. 754-759
Author(s):  
Hu Ran Liu
Keyword(s):  
Contact Condition ◽  
Cutting Edge ◽  
New Method ◽  
Grinding Wheel ◽  
Side Edge ◽  
Nc Grinding

The paper determines the shape of grinding wheel by the contact condition, not by the cutting edges, and introduced the NC grinding. After regrinding the cutting edge has at least 2 points coincided with the theoretical edge, even after regrinding for many times. So that increased the length of regrinding of the hob.

A New Method for the Preparation of Cutting Edges via Grinding

2013 ◽  
Vol 769 ◽  
pp. 85-92 ◽  
Author(s):  
Christian Effgen ◽  
Bejamin Kirsch
Keyword(s):  
Tool Path ◽  
Cutting Edge ◽  
New Method ◽  
Grinding Wheel ◽  
Outer Diameter ◽  
Processing Times ◽  
Elastic Bond ◽  
End Mills ◽  
Grinding Machine ◽  
Milling Tools

In this paper, a new method for the preparation of cutting edges via grinding is presented. This method enables the manufacturing of the tool macro and micro geometry in one setup without reclamping, allowing improved flexibility, repeatability and accuracy at reduced processing times. This new method is path controlled using a special elastic bond for the grinding wheels. By using elastic bond, a rounded cutting edge instead of undesired chamfers can be achieved, as the bond nestles around the cutting edge and elastically deforms. The elastic bond is specified by the grain concentration and its basic hardness. Besides the specifications of the bond, the process kinematics highly influences the properties of the cutting edge. The kinematics is a combination of the tool path (machining strategy) and the grinding wheel geometry. The presented experiments include the examination of three different kinematics using three different grinding wheel geometries, FEPA 1A1, 1V1 and 4A2. For each kinematics, three different grain concentrations and three degrees of basic bond hardness were tested, resulting in a complete amount of 27 parameter combinations. The outer diameter cutting edges of cemented carbide milling tools (end mills) were prepared in a 5-axis tool grinding machine. The shape and quality of the achieved cutting edge rounding was qualitatively evaluated by means of scanning electron microscopy (SEM).

The Half-Forming Principle of Carbide Bur on the 5-Axis Nc Grinding Machine Tool

2011 ◽  
Vol 204-210 ◽  
pp. 1094-1098
Author(s):  
Hu Ran Liu
Keyword(s):  
Analytical Method ◽  
Contact Point ◽  
Cutting Tools ◽  
Contact Condition ◽  
Cutting Edge ◽  
Mathematical Form ◽  
Nc System ◽  
Mathematical Equations ◽  
Grinding Machine ◽  
Nc Grinding

This paper researched the forming theory of the cutting tools with helical teeth and complex surfaces. Deduced the nonlinear equations of the movement of NC system to generate such tools, presented the way to find the solution of the equations, calculate the cross section graphics of the teeth profile and made computer simulation for NC machining. In the former research, the position of the work, the point to be machined, and the position of the grinder are undetermined. They must be solved out by a group of mathematical equations, so that the method can be called as analytical method. In this paper, the position of the work, the point to be machined on the work, are deliberately determined before hand, while the position of the grinder is determined by solving a group of mathematical equations. Because of these, this method can be called as the half analytical method, or the half-forming method. The cutting edge A is deliberately turned to special position, some kind like the forming method, while contact point on the cutting edge B is determined by the contact condition, so that this method can be also called as half- forming method. The concept of this method is very clear, the mathematical form is very simple, and the calculation is very easy.

Influence of Tooth Errors and Truing Principles of Grinding Wheel Abrasion for Machining Arc Enveloping Worm

2013 ◽  
Vol 652-654 ◽  
pp. 2153-2158
Author(s):  
Wu Ji Jiang ◽  
Jing Wei
Keyword(s):  
Mathematical Model ◽  
Case Studies ◽  
High Precision ◽  
High Performance ◽  
New Method ◽  
Grinding Wheel ◽  
Grinding Process ◽  
The Mathematical Model

Controlling the tooth errors induced by the variation of diameter of grinding wheel is the key problem in the process of ZC1 worm grinding. In this paper, the influence of tooth errors by d1, m and z1 as the grinding wheel diameter changes are analyzed based on the mathematical model of the grinding process. A new mathematical model and truing principle for the grinding wheel of ZC1 worm is presented. The shape grinding wheel truing of ZC1 worm is carried out according to the model. The validity and feasibility of the mathematical model is proved by case studies. The mathematical model presented in this paper provides a new method for reducing the tooth errors of ZC1 worm and it can meet the high-performance and high-precision requirements of ZC1 worm grinding.

scholarly journals The Role of AES and RC5 Algorithm: A Cryptosystem Model to Secure Information in the Image based Steganography along with Watermarking

Webology ◽  
2021 ◽  
Vol 18 (05) ◽  
pp. 1158-1167
Author(s):  
Jagadeesan S ◽  
Mani C ◽  
Sambasivam S ◽  
Jaisankar P ◽  
Sasikala S
Keyword(s):  
Personal Information ◽  
New Technology ◽  
Cutting Edge ◽  
New Method ◽  
Know How ◽  
Secure Information ◽  
Information Confidentiality ◽  
Textual Content ◽  
As If

In the brand new technology of cutting-edge technological know-how and era is advanced day via way of means of day. The information confidentiality is danger everywhere in the global and it will increase rapidly. Steganography and cryptography are very vital strategies applied in facts safety to cowl and steady mystery messages in transmitting facts. In this we launch, put in force and check a completely sole technique that can be used as a steady and extraordinarily budget friendly technique {of facts|of knowledge|} interest in addition to information extracting (Jagadeesan, S., 2020). Some efficiency parameters are going to be thru an test received and in comparison with opportunity current approaches parameters to show the efficiency of the deliberate technique. Here we proposes a brand new method to hiding the information the use of steganography strategies primarily based totally on AES and RC5 set of rules cryptosystem. The word Steganography is the splendor of hiding mystery information in the back of the photos, videos, sound and textual content to cowl the name of the game communication. Cryptosystem is the system which given our technique extra perfection. The visible first-class of the quilt photo certainly nice, nobody can consider it how personal information are transmitted the use of this technique. This suggest technique and set of rules ability is exceedingly bendy than different posted set of rules. The AES and RC5 set of rules has no more difficulty and it looks as if thoroughly to hiding the personal information.

New method for detecting active infeed of cutting edge of end mills

2021 ◽  
Author(s):  
Petr M. Pivkin ◽  
Vladimir A. Grechishnikov ◽  
Ilya V. Minin ◽  
Mikhail Mosyanov ◽  
Alexsey B. Nadykto
Keyword(s):  
Cutting Edge ◽  
New Method ◽  
End Mills

COMPARISON OF EXPERIMENTALLY MEASURED AND SIMULATED WORKPIECE AND GRINDING WHEEL TOPOGRAPHY USING A NEW DRESSING MODEL

2016 ◽  
Vol 40 (1) ◽  
pp. 1-17 ◽  
Author(s):  
Abdalslam Darafon ◽  
Andrew Warkentin ◽  
Robert Bauer
Keyword(s):  
Surface Finish ◽  
Metal Removal ◽  
Ground Surface ◽  
Cutting Edge ◽  
Edge Density ◽  
Grinding Wheel ◽  
Workpiece Surface ◽  
Wheel Topography ◽  
Grinding Wheel Topography ◽  
Grinding Conditions

This paper presents a new empirical model of the dressing process in grinding which is then incorporated into a 3D metal removal computer simulator to numerically predict the ground surface of a workpiece as well as the dressed surface of the grinding wheel. The proposed model superimposes a ductile cutting dressing model with a grain fracture model to numerically generate the resulting grinding wheel topography and workpiece surface. Grinding experiments were carried out using “fine”, “medium” and “coarse” dressing conditions to validate both the predicted wheel topography as well as the workpiece surface finish. For the grinding conditions used in this research, it was observed that the proposed dressing model is able to accurately predict the resulting workpiece surface finish for all dressing conditions tested. Furthermore, similar trends were observed between the predicted and experimentally-measured grinding wheel topographies when plotting the cutting edge density, average cutting edge width and average cutting edge spacing as a function of depth for all dressing conditions tested.

Research and Realization of a New Curve Grinding Method

2009 ◽  
Vol 16-19 ◽  
pp. 1305-1309
Author(s):  
Tian Zhong Sui ◽  
Lei Wang ◽  
Wen Bo Zhang ◽  
Di Sun
Keyword(s):  
Contact Zone ◽  
Contact Point ◽  
Linear Interpolation ◽  
Grinding Wheel ◽  
Central Plane ◽  
Interpolation Algorithm ◽  
Contact Points ◽  
Grinding Method ◽  
The Given ◽  
Nc Grinding

The curve NC grinding methods in presnet are analyzed. On the basis of this, a new curve NC grinding method―region contact grinding (RCG) method is proposed. With this method, the contact point between grinding wheel and workpiece can be controlled in the given contact zone. The problom of grinding wheel's distortion which is produced by contact point excessively deviating from symmetrical central plane of grinding wheel can be overcome. In order to the grinding mode, a new interpolation algorithm―region equiangular linear interpolation (RELI) is proposed. Namely, in terms of the convex-concave property of processing curve, some grinding regions are divided. In each grinding region, the grinding wheel's swing angle within each interpolation cycle is evenly distributed. Thereby, in the process of grinding a convex-concave curve, grinding wheel's contact points totally locate in the range of contact zone angle.

Geophysics Bright Spots

2020 ◽  
Vol 39 (3) ◽  
pp. 212-213
Author(s):  
Jyoti Behura
Keyword(s):  
Data Processing ◽  
Seismic Data ◽  
Cutting Edge ◽  
New Method ◽  
Seismic Data Processing ◽  
Light Bulb ◽  
Colorado School ◽  
Bright Spots ◽  
Outside The Box

Welcome to a new collection of Geophysics Bright Spots. I remember reading the first Bright Spots column as a student at Colorado School of Mines. Steve Hill, who conceived the wonderful idea of initiating this column, was my instructor there for a course on seismic data processing. He is a brilliant teacher — always challenging his students to think outside the box and ever open to discussions and debates. Through this column, he exposed readers to cutting-edge research in the field of geophysics while providing a new and important platform for authors to reach industry practitioners. Below is a list of research the editors found interesting in the latest issue of Geophysics. If any of them pique your interest, please read the full Geophysics article. Maybe a light bulb will go off in your head for a new method or algorithm.

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