A Prediction Method of Milling Stability of Thin-walled Parts

A technology of stability prediction and thin-walled parts, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of weak rigidity of thin-walled parts, easy chattering, reduced service life of machine tools and tools, etc.

Inactive Publication Date: 2017-12-15
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the weak rigidity of thin-walled parts, chatter is prone to occur during milling, which seriously affects the surface quality of the workpiece, reduces the service life of the machine tool and the tool, and may cause damage to the machine tool
Predict the chatter stability of the milling process, choose the appropriate processing conditions, can control the occurrence of chatter, improve processing efficiency, and reduce processing costs. At present, when predicting stability, it is necessary to obtain machine tool-spindle- The modal mass, modal damping, modal stiffness and other parameters of the tool-workpiece system, but the acquisition of these parameters is affected by the clamping posture and state of the workpiece. Due to the weak rigidity of thin-walled parts, the acquisition of modal parameters is often It is not accurate enough, especially in the hammering test, the applicability of ordinary fixtures is poor, and it cannot meet the experimental requirements, which greatly increases the manufacturing cost

Method used

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  • A Prediction Method of Milling Stability of Thin-walled Parts
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  • A Prediction Method of Milling Stability of Thin-walled Parts

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Embodiment Construction

[0081] One, the embodiment of device of the present invention:

[0082] like Figure 4 , 5 As shown, a support device for thin-walled parts includes a support platform 3, a first loop 1, a second loop 2, an X-direction slide 5, a matching buckle 4 with a through hole 6, and a first slide 7 -1, the second slideway 7-2, the third slideway 8-1, the fourth slideway 8-2 and the supporting mechanism for fixing and supporting thin-walled parts;

[0083] The first ring road 1 and the second ring road 2 are concentric and sequentially arranged on the support table 3, and the X-direction slideway 5 is arranged on the support table 3 and passes through the first ring road 1 and the second ring road 2 The center of the circle, the first slideway 7-1 and the second slideway 7-2 are symmetrically arranged on both sides of the X-direction slideway 5, and the third slideway 8-1 and the fourth slideway 8-2 are symmetrically arranged on On both sides of the X-direction slideway 5, the matchi...

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Abstract

The present invention relates to the field of advanced manufacturing, in particular to a support device for thin-walled parts and a method for predicting milling stability. The present invention can complete support postures of different spatial shapes on a support platform by cooperating with buckles, loops and slideways, and can effectively The support and fixation of thin-walled parts is completed, and more accurate modal parameters can be obtained by using the support device for clamping, so that the stability limit predicted by using the radial basis function is more accurate, more suitable for production, and can be used for actual operators. Provide solid theoretical support.

Description

technical field [0001] The invention relates to the field of advanced manufacturing, in particular to a method for predicting the milling stability of thin-walled parts. Background technique [0002] As our country continues to integrate into the global market, the manufacturing industry is facing more and more competitive pressure. High-speed cutting technology has emerged and has been widely used in the manufacture of complex parts in the fields of aviation, aerospace, ships, molds and automobiles. Wall parts are typical complex parts, and they are used more and more in the industrial field. Due to the weak rigidity of thin-walled parts, chatter is prone to occur during milling, which seriously affects the surface quality of the workpiece, reduces the service life of the machine tool and the tool, and may cause damage to the machine tool. Predict the chatter stability of the milling process, choose the appropriate processing conditions, can control the occurrence of chatt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 刘志兵闫正虎王西彬王东前刘彪吕维维赵倩
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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