Method for solving grinding track of front tool face of arc edge of arc head end mill

A circular arc edge and rake face technology, which is applied in the field of numerical control grinding trajectory solution

Active Publication Date: 2019-05-03
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

[0004] Aiming at the transition problem between the peripheral tooth rake face and the end tooth rake face in the grinding of the integral arc head end mill, the present inven

Method used

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  • Method for solving grinding track of front tool face of arc edge of arc head end mill
  • Method for solving grinding track of front tool face of arc edge of arc head end mill
  • Method for solving grinding track of front tool face of arc edge of arc head end mill

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Embodiment Construction

[0092] The technical solution is as follows:

[0093] 1. Definition of technological features of rake face of arc edge

[0094] In the grinding process of the rake face of the arc edge, a conical grinding wheel is used for grinding. Establish Figure 1a The workpiece coordinate system shown is O-XYZ, and the Z axis coincides with the tool axis. In the case of determining the cutting edge curve, the rake face is constrained by width and rake angle. In this algorithm, given the edge line formula of any arc edge curve, the corresponding grinding trajectory posture of the grinding wheel can be calculated, so the edge line of the arc edge is regarded as a known curve. During the grinding process, there is a spatial relationship between the grinding wheel and the cutter body, and it is difficult to directly determine the attitude of the grinding wheel. This algorithm projects the grinding process to the instantaneous rake face of the arc edge for calculation, and constrains the gr...

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Abstract

The invention provides a method for solving a grinding track of a front tool face of an arc edge of an arc head end mill. The method includes the following steps: firstly, the process characteristicsof the front tool face of the arc edge are defined, and include an instantaneous front tool face of the arc edge in the grinding plane, and a track curve of knifing grinding points (simultaneously constrains the width and front angle of the arc front tool face); secondly, a grinding track and attitude of a grinding wheel in the instantaneous front tool face is calculated; and finally, through spatial coordinate transformation, an actual machining track of the grinding wheel is obtained. According to the method for solving the grinding track of the front tool face of the arc edge of the arc head end mill, a grinding method of the front tool face of the arc edge of the integral end mill is studied in a deepgoing way, and a set of arc front tool face grinding algorithm capable of satisfying smooth transition and simultaneously constraining the front angle and the width; and simulation and machining results show that the method can be effectively used in tooling, the accuracy and feasibility of the grinding method are proved, and a theoretical reference for actual production and machining of cutters is provided.

Description

technical field [0001] The invention relates to the technical field of integral end milling cutter processing, in particular to a method for solving the numerically controlled grinding trajectory of the rake face of the arc edge of the arc head end mill. Background technique [0002] The integral arc head end mill is a common high-speed cutting tool at present, which has the characteristics of low manufacturing cost and high material removal rate. When processing the arc angle of the workpiece, the arc head end mill is more rigid than the ball end mill, and the processing efficiency is higher; End mills are more resistant to chipping. [0003] The working part of the integral arc head end mill mainly includes two parts: the peripheral tooth and the end tooth, and the arc edge is an important part of the end tooth. To design the arc edge part, it is first necessary to establish the mathematical modeling of the edge curve, and then set the grinding process for the arc flank ...

Claims

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Application Information

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IPC IPC(8): B24B3/02
Inventor 丁国富江磊马术文黎荣张潇然梁红琴
Owner SOUTHWEST JIAOTONG UNIV
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