A detection method for the effect of clamping force on machining deformation of thin-walled parts
A technology for processing and testing thin-walled parts, which is applied to metal processing equipment, metal processing machinery parts, manufacturing tools, etc., can solve problems such as difficulty in determining the range of clamping force, and achieve the effect of improving reliability and ensuring safety and reliability
Active Publication Date: 2020-10-16
SHENYANG AEROSPACE UNIVERSITY
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[0007] Aiming at the current situation that it is difficult to determine the range of clamping force when the minimum processing deformation occurs in the current clamping process of thin-walled parts, and to overcome the deficiencies of the prior art, this invention proposes a detection method for the influence of clamping force on the processing deformation of thin-walled parts
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[0027] In order to understand the present invention more clearly, the present invention will be further described in detail with reference to the accompanying drawings.
[0028] Refer below Figure 1-6 To describe a method for detecting the influence of clamping force on processing deformation of thin-walled parts according to an embodiment of the present invention. The method includes the following steps:
[0029] Step 1: Calculate the basic conditions to be met for the clamping force of thin-walled parts 9;
[0030] Step 2: Select 3-7 clamping forces to carry out clamping under different clamping forces;
[0031] Step 3: Use surface support and four-point clamping to perform milling experiments on thin-walled parts 9;
[0032] Step 4: Use the pressure sensor 2 to measure the clamping force and record the change of the clamping force during the milling process;
[0033] Step 5: After milling is completed, use a coordinate measuring machine to measure the flatness of the machined surfa...
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The invention discloses a detection method for influences of clamping force on thin-wall piece machining deformation. The detection method comprises the steps that firstly, basic conditions needing tobe met by clamping force are calculated; secondly, different degrees of clamping force is selected, and clamping under the action of different degrees of pressing force is developed; thirdly, a facesupporting and four-point-clamping clamping manner is adopted for conducting the milling test on a thin plate piece; fourthly, pressure sensors are adopted for measuring the clamping force, and clamping force changes in the milling machining process are recorded; fifthly, after milling is finished, a three-coordinate measuring machine is used for measuring the planeness of the machined surface; and sixthly, through the contrastive analysis on the planeness value when the clamping force is different, the influence rule of the clamping force on deformation is obtained, and accordingly the clamping force value when planeness requirements are different is obtained. Through the milling test under the condition of different degrees of clamping force and in combination with measurement of the clamping force at the beginning of machining and clamping force changes in the machining process, the deformation situation after machining of different thin-wall pieces is obtained through measurement of the surface planeness, and the influence rule of the clamping force on the planeness is obtained.
Description
Technical field [0001] The invention belongs to the technical field of processing deformation, and specifically relates to a method for detecting the influence of clamping force on processing deformation of thin-walled parts. Background technique [0002] In order to ensure the structural performance requirements of aircraft structural parts, aviation structural parts are all made to reduce weight under the premise of ensuring structural strength and other requirements. Therefore, aviation structural parts are usually thin-walled structures. With the development of the integration of aviation structural parts, structural parts as a whole show the characteristics of large, thin-walled and complex structure. The characteristics of large size and thin wall make the aerospace structural parts easy to produce deformation after processing. [0003] For the installation of large thin-walled structural parts on the fixture, the clamping process mainly relies on the pressure plate. During...
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IPC IPC(8): B23Q17/00
CPCB23Q17/005
Inventor 王奔赵明张亚飞刘娜王明海
Owner SHENYANG AEROSPACE UNIVERSITY