In a cutting process, the position of cutting edge of the tool with respect to the workpiece is important, based on. Cutting edge is 1 straight, 2parallel to the original plane surface on the work piece and 3perpendicular to the direction of cutting. Orthogonal metal cutting pdf orthogonal metal cutting pdf orthogonal metal cutting pdf download. Removal of unwanted material in the form of chips in order to. Summary the orthogonal metal cutting process for a controlled contact tool is simulated using a limit analysis theorem. Orthogonal cutting is a type of metal cutting in which the cutting edge of wedge shape cutting tool is perpendicular to the direction of tool motion. Orthogonal and oblique cutting mechanics request pdf.
An investigation into orthogonal and oblique cutting. This paper presents pure orthogonal cutting which is the case of orthogonal cutting, moreover the tool cutting edge is perpendicular to the workpiece. In a cutting process, the position of cutting edge of the tool with respect to the workpiece is important, based on which metal cutting process are classified into two categories. Modelling orthogonal and oblique cutting via discontinuity. Chapter 20 fundamentals of machining orthogonal machining. Kim 2 cutting processes objectives product quality. A series of orthogonal and oblique cutting operations at low and high cutting speeds are simulated, with modelling results validated against key cutting parameter data from machining trials cutting forces, chip morphology etc. Thus tool approach angle and cutting edge inclination are zero. In this paper, a predictive thermal and analytical modeling approach for orthogonal cutting process is introduced to conveniently calculate forces, stress, and temperature distributions. Fi orthogonal cutting is also known as two dimensional metal cutting in which the cutting edge is normal to the work piece.
The modeling approach is based on the work material constitutive model, which depends on strain, strain rate, and temperature. Orthogonal and oblique cutting shear stress friction. In orthogonal cutting, the tool approaches the work piece with its cutting edge parallel to the uncut surface and at right angles to the direction of cutting. An investigation into orthogonal and oblique cutting processes. N metal cutting operation, the position of the cutting tool is important based on which the cutting operation is classified as orthogonal cutting and oblique cutting shown in g 1. Lecture series on manufacturing processes ii by prof. The cutting condition when chip is expected to flow along the orthogonal plane is known as orthogonal cutting. An orthogonal metal cutting process for a controlled contact tool is depicted in figure 1 with. The basic and main difference between orthogonal cutting and oblique cutting is that in orthogonal cutting, cutting edge of the tool is perpendicular to the direction of motion but in oblique cutting the cutting edge make an angle with the direction of motion. In oblique cutting the angle between the cutting edge and the direction of the tool, motion is anywhere except 90 degrees. Request pdf orthogonal and oblique cutting mechanics this chapter provides the engineering knowledge and modelling techniques applied in description. Predictive analytical and thermal modeling of orthogonal.
The basic principles are stated in the form of a primal optimization problem with an objective function subjected to constraints of the equilibrium equation, its static boundary conditions and a constitutive inequality. Metal cutting could be done either by a single point cutting tool or a multi point cutting tool. According to the orthogonal cutting model, the specific cutting power is defined as the multiplication of the cutting force per unit crosssectional area and the cutting speed. However, orthogonal cutting is only a particular case of oblique cutting and. The one type is called as straight angle cutting, where blade is in continuous contact with metal sheet from one side of edge to another side of the edge at the beginning of the cutting process. Oblique cutting characteristics cutting edge at an angle. There are two basic types of metal cutting by a single point cutting tool. Concept of orthogonal and oblique cutting and difference. The use of single edged tools in sloped cutting provides a favorable surface finish characteristic. Pdf prediction of shear angle in oblique cutting with.
An investigation into orthogonal and oblique cutting processes zahid mahmood a thesis submitted in partial fulfilment of the requirements of sheffield hallam university for the degree of master of philosophy october 2018. In this type of cutting, the cutting edge is perpendicular to the direction of the motion of the tool. Figure 2015 orthogonal tube turning ott produces a twoforce cutting operation at speeds equivalent to those used in most oblique machining operations. We okdo pdf to gif tiff ico converter 3 6 now extend this methodology to the class of orthogonal metal cutting problems. Orthogonal and oblique cutting mechanics pdf free download. Machining can be defined as the process of removing material from a workpiece in the form of chips by a sharp cutting to leave the desired part shape. An eulerian reference coordinate is used to describe the steady. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. What is difference between orthogonal cutting and oblique. Oct 23, 2016 today we will discuss about difference between orthogonal and oblique cutting. Reduction the length of steel pipe using center lathe machine is an example for. This type of cutting is also known as twodimensional cutting. Metal cutting or commonly known as machining, is the most common phenomenon used in manufacturing industries. Nov 29, 2010 orthogonal cutting is a 2d cutting having 2 forces i.
What is the difference between oblique and orthogonal cutting. Analysis of orthogonal metal cutting processes semantic scholar. Modelling orthogonal and oblique cutting via discontinuity layout. Every product, big or small, undergoes a machining process to get final product. In oblique cutting, the cutting edge is inclined but not. Kim 3 orthogonal cutting in a lathe rake angle shear angle t o. A series of orthogonal and oblique cutting operations at low and high cutting speeds are simulated, with modelling results validated against key cutting. May 09, 2017 the basic and main difference between orthogonal cutting and oblique cutting is that in orthogonal cutting, the cutting edge of the tool is perpendicular to the direction of motion but in oblique cutting, the cutting edge makes an angle with the d. Please see the complete video for understanding the concept. Sep 28, 20 orthogonal and oblique cutting orthogonal cutting. Jun 17, 2016 on this channel you can get education and knowledge for general issues and topics. Instead of experiments in a real machine tools environment, the results of chip forming process obtained by the finite element method analysis can be used 23. Orthogonal metal cutting pdf the orthogonal metal cutting process for a controlled contact tool is. Cutting process variation market research conceptual design.
Two types of metal cutting used in industries orthogonal cutting and oblique cutting. Orthogonal cutting video, geometry, forces and power demonstration cutting equipmenttools design for manufacturing. Paul,department of mechanical engineering, iit kharagpur. In oblique cutting the angle between the cutting edge and the direction of the tool, motion is. Find powerpoint presentations and slides using the power of, find free presentations research about orthogonal and oblique cutting ppt. Pdf an experimental investigation of oblique cutting mechanics. The orthogonal metal cutting process for a controlled contact tool is simulated using a limit analysis theorem. This force is usually determined in experimental work, from the measurement of two orthogonal components. Transformation of the data from the orthogonal cutting test results to oblique cutting process is applied, and the results are compared with actual. In orthogonal cutting, the cutting edge of the tool is at right angles to the direction of the relative motion between the tool and the work piece. Cutting edge is straight, parallel to the original plane surface at the work piece and perpendicular to the direction of cutting. Effect of rake angle and feed rate on cutting forces in an. The cutting process may be divided into two major types. Orthogonal and oblique cutting free download as powerpoint presentation.
In this cutting the cutting edge is wider than width of cut. The principle of orthogonal cutting in a planing and b turning. The slight difference in cutting speed between the inside and outside edge of the chip can be neglected. They have teeth molded on the inner surface that fit into matching toothed pul. Chapter six orthogonal and oblique cutting mechanics contents 6. Position of the active cutting edge versus direction of relative toolwork motion 4. Difference between orthogonal and oblique cutting mecholic.
In the oblique cutting model presented in this paper, under similarly defined crosssectional area, the average cutting force is multiplied by the cutting speed to. Difference between orthogonal and oblique cutting orthogonal cutting in orthogonal cutting, the tool approaches the work piece with its cutting edge parallel to the uncut surface and at right angles to the direction of cutting. Mrr, tool wear physics of cutting mechanics force, power tool materials design for manufacturing 2. In orthogonal cutting, the resultant force r applied to the chip by tool lies in a plane normal to the tool cutting edge.
Feb 17, 2018 in this video, we are discussing the concept of orthogonal and oblique cutting and difference between them. For example, twodimensional cutting for square shoulder operation. Comparison between the orthogonal and oblique cutting. Difference between orthogonal and oblique cutting mech4study. View and download powerpoint presentations on orthogonal and oblique cutting ppt.
On this channel you can get education and knowledge for general issues and topics. Yang department of mechanical engineering and applied mechanics, the university of michigan, ann arbor, michigan 48109, u. Was elaborated model of oblique cutting to predict the cutting forces, the chip flow direction, the contact length between the chip and the tool and the temperature distribution at the tool. If the cutting face of the tool is at 90 o to the direction of the tool travel the cutting action is called as orthogonal cutting. Prediction of shear angle in oblique cutting with maximum shear stress and minimum energy principles.