What is the reference system of tool geometry?
Cutter angle reference systemThere are mainly three kinds of reference systems for cutting tool angles: the orthogonal plane reference system, the reference plane of the reference plane and the assumed working plane reference frame.The plane orthogonal reference system consists of a base of Pr, Ps and Po are cutting plane plane space three plane projection system called orthogonal plane reference system. Since the three projection planes of the reference system are perpendicular to each other, and meet the requirements of the three-dimensional Cartesian coordinate system, the reference system is the most commonly used reference system.Method: the plane reference system consists of base Pr, Ps and Pn cutting plane method of plane space of three plane projection system is called the method of plane reference system.The work assumes that plane reference system: the base Pr, it is assumed that the working plane Pf and plane back Pp space formed by the three plane projection system called assumed working plane reference system.
Tool angle reference planeThe reference planes used to form the tool angles are: the base plane, the cutting plane, the orthogonal plane, the normal plane, the assumed working plane and the back plane, as shown in Figure 1 - 5.The base Pr: a selected point on the cutting edge, the plane perpendicular to the main direction of motion. Typically, it is parallel (or vertical) to the plane of the mounting surface (or axis) of the tool. For example: the basic surface of the common lathe Pr, can be interpreted as parallel to the bottom of the tool;The cutting plane Ps: a selected point on the cutting edge and cutting edge plane, tangent, and perpendicular to the surface of Pr. It is also the cutting edge and cutting speed direction of the plane;The orthogonal plane Po: selected point on the cutting edge, while the plane perpendicular to the surface of Pr and cutting plane Ps;The method of plane Pn: selected point on the cutting edge, plane and perpendicular to the cutting edge;The work assumes that plane Pf: selected point on the cutting edge, parallel to the assumption that the feed direction perpendicular to the reference plane, and Pr;Go back plane Pp: a selected point on the cutting edge, and plane perpendicular to the working plane of Pf and assumed Pr base.
The reference system of cutting tool geometric angle can be divided into two categories: static reference system and working reference system.In order to ensure the smooth operation of the cutting process, to obtain a qualified processing surface, the cutting part of the tool must have a reasonable geometric shape. Tool angle is an important parameter for determining the geometry of the cutting tool.
