Tool axis vector smoothing method based on ba-type five-axis CNC machine tool machining ball-end cutter
A technology of tool axis vector and CNC machine tools, which is applied to five-axis CNC machine tool axis vector smoothing. Based on the field of tool axis vector smoothing of BA-type five-axis CNC machine tool ball-end cutter processing, it can solve the sudden change of the tool axis vector on curved surfaces, and the large-scale Problems such as fluctuations, to achieve the effect of smooth and smooth movement, avoid sudden changes, improve processing quality and processing efficiency
Active Publication Date: 2019-07-12
SHANDONG UNIV OF TECH
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] In order to overcome the problem of sudden changes and large fluctuations in the tool axis vector of the existing five-axis machining of complex curved surfaces with ball-end cutters, the present invention provides a smoothing method for the tool-axis vector based on BA-type five-axis CNC machine tool ball-end cutter processing
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0046] The present invention is based on a BA-type five-axis CNC machine tool ball-end cutter processing tool axis vector smoothing method, the basic process of which is as follows figure 1 As shown, its preferred specific implementation method includes:
[0047] Step A, establishing the relational equation between the tool axis vector of the ball-end cutter and the design variable of the cutter position. Described step A specifically is:
[0048] (1) The relationship equation between the tool axis vector of the ball head cutter and the design variable of the cutter position in the local coordinate system
[0049] Such as figure 1 As shown, let the ball-end cutter process the complex surface S: r(u,v), P cc (u cc ,v cc ) is any point on the surface, n cc is the unit normal vector of the point, O w x w Y w Z w is the workpiece coordinate system. Let r be the radius of the ball nose cutter, O L is the origin of the local coordinate system, in and point O L and...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for smoothing a tool axis vector based on a BA-type five-axis numerical control machine tool ball-end cutter, which comprises the following steps: establishing a relational equation between the ball-end cutter tool-axis vector and the design variable of the cutter position; establishing a ball-end cutter The kinematic transformation equation between the tool axis vector and the rotary axes B and A of the five-axis CNC machine tool; establish the relational equation between the design variables of the ball-end cutter and the rotary axes B and A of the five-axis CNC machine tool; determine the cutter axis of the ball-end cutter The design variables, objective functions and constraints of vector smoothing are established based on the BA-type five-axis CNC machine tool ball-end cutter processing tool axis vector smoothing mathematical model; the solution method of the above-mentioned tool axis vector smoothing mathematical model is determined. This method can avoid the sharp change of the rotary axis of the machine tool, make the movement of the rotary axis of the machine tool more stable and smooth, greatly reduce the angular velocity and angular acceleration of the rotary axis of the machine tool, thereby improving the processing quality and efficiency of the curved surface, and has strong practical application value.
Description
technical field [0001] The invention relates to a tool axis vector smoothing method of a five-axis numerical control machine tool, in particular to a tool axis vector smoothing method based on a BA-type five-axis numerical control machine tool ball head cutter, and belongs to the technical field of five-axis numerical control machining. Background technique [0002] When using a ball-end cutter for five-axis machining of complex surfaces, due to the poor geometric properties of the surface, such as the surface's normal vector, main direction, curvature, etc., it is easy to cause sudden changes and large fluctuations in the generated ball-end cutter tool axis vector. Even if the simplest tool positioning method (such as the Sturz method) is used to process the above-mentioned curved surface area five-axis, it will cause a drastic change in the tool axis vector, which will affect the stability of the five-axis machine tool motion, the servo capability and increase of the feed a...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/408
CPCG05B19/4086G05B2219/33263
Inventor 徐汝锋周喆郭前建于珊珊贺磊陈海真
Owner SHANDONG UNIV OF TECH