Model construction and verification method for tooth wear difference analysis of high-feed milling cutter

A technology of analysis model and verification method, applied in the direction of geometric CAD, etc., can solve problems such as single maximum wear amount, inability to accurately describe the difference in the wear state of different cutter teeth, and inability to fully describe the wear state of the flank face

Active Publication Date: 2022-03-04
HARBIN UNIV OF SCI & TECH
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an analytical model construction and verification method for revealing the difference in tooth wear of high-feed milling cutters, so as to solve the problem that the existing identification methods of tooth wear characteristics are mostly based on a single maximum wear amount, which cannot To fully describe the wear state of a single tooth flank, it is also impossible to accurately describe the difference in wear state between different teeth. The identification of the characteristics affected by the wear difference to achieve the purpose of verifying the analysis model of the wear difference

Method used

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  • Model construction and verification method for tooth wear difference analysis of high-feed milling cutter
  • Model construction and verification method for tooth wear difference analysis of high-feed milling cutter
  • Model construction and verification method for tooth wear difference analysis of high-feed milling cutter

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Embodiment approach 1

[0048] Implementation Mode 1: The details are as follows:

[0049] 1. Identification method of influencing factors of tooth wear difference of high-feed milling cutter

[0050] In order to identify the factors affecting the difference in tooth wear of high-feed milling cutters, milling experiments with high-feed milling cutters were carried out. Before the start of each experiment, the tooth error of the milling cutter was measured. After the experiment, the collected milling vibration signals were filtered, and the maximum value, minimum value, effective value, main frequency and spectrum value of the milling vibration acceleration under different cutting strokes were extracted.

[0051] After the experiment, the flank wear morphology of each tooth of the high-feed milling cutter was detected, and the wear state diagram of the flank flank of the bottom edge of the tooth under different cutting stroke conditions was obtained. in point s j min with dot s j u The horizonta...

Embodiment 1

[0118] Implementation example 1: Identification method of influencing factors of tooth wear difference of high-feed milling cutter

[0119] In order to identify the factors affecting the difference in tooth wear of high-feed milling cutters, 10 sets of milling experiments were carried out using high-feed milling cutters (F2330) produced by Walter Company. The spindle speed n used in the experiments was 1143r / min, and the feed rate v f 500mm / min, milling depth a p 0.5mm, milling width a eis 16mm, and the milling stroke L is 0.5m, 1m,...,5m. Before the start of each group of experiments, the axial error of the milling cutter tooth (Δc j min ) and radial error (Δr 0 j ) for measurement and the measurement results are shown in Table 2.

[0120] The experiment of milling titanium alloy was carried out on the three-axis milling machining center (VDL-1000E) produced by Dalian Machine Tool Works. During the milling experiment of titanium alloy, the vibration signal generated b...

Embodiment 2

[0136] Implementation example 2: Construction method of high-feed milling cutter tooth wear difference analysis model

[0137] Describing the dynamic cutting behavior of milling cutters and cutter teeth during milling titanium alloys is the key to clarify the cause of differential wear of milling cutter cutter teeth. In order to obtain the change characteristics of the milling cutter’s cutting pose, quantitatively describe the dynamic cutting behavior of the milling cutter, and establish a cutting motion analysis model of the milling cutter, such as Figure 4 The meaning of each parameter in the figure is shown in Table 2.

[0138] Table 2 Explanation of variables in the analysis model of milling cutter tooth cutting motion

[0139]

[0140] Depend on Figure 4 It can be seen that the coordinate system o d v -a i v b i v c i v , o d -a i b i c i , o g -x g the y g z g The relationship between coordinate changes is shown in formula (6). Among them, the tra...

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Abstract

The construction and verification method of the high-feed milling cutter tooth wear difference analysis model belongs to the field of milling cutter tooth technology analysis. In the prior art, during the high-feed milling cutter milling process, the tooth contact length and contact depth increase non-linearly , and the rapid dissipation of heat caused by air cutting, coupled with the impact and vibration caused by the intermittent cutting of the milling cutter, the instantaneous cutting position and attitude of the cutter teeth change, resulting in significant differences in the wear degree of each cutter tooth of the milling cutter. It is difficult to effectively identify the influencing factors. The invention can accurately and effectively identify the influencing factors of the tooth wear difference of the high-feed milling cutter, construct the analysis model of the tooth wear difference, and accurately describe the error of the milling cutter and its position and posture changes, as well as the workpiece during the milling process of the high-feed milling cutter Based on the change of geometric structure characteristics, a boundary identification method of the tooth wear area is proposed to accurately identify the distribution and change characteristics of the upper and lower boundary wear of the tooth flank, and finally verify the effectiveness of the above analysis model.

Description

technical field [0001] The invention relates to an analysis model construction and verification method for the wear difference of milling cutter teeth, in particular to a method for identifying factors affecting the wear difference of high-feed milling cutter teeth; construction of an analysis model for wear difference of high-feed milling cutter teeth Method; high-feed milling cutter tooth wear area boundary recognition method; high-feed milling cutter tooth differential wear analysis model verification method; belongs to the field of milling cutter tooth technology analysis. Background technique [0002] During the milling process of high-feed milling cutters, the characteristics of tool vibration and impact change all the time. The existing wear difference analysis models cannot fully reflect the influence of process parameters, milling cutter errors and milling cutter poses on wear differences, and at the same time cannot It reflects the changing characteristics of the g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17
Inventor 赵培轶姜彬左林晗
Owner HARBIN UNIV OF SCI & TECH
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