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A test device for testing the impact resistance of coated tools

A technology of impact resistance and test device, which is applied in the direction of applying repetitive force/pulsation force to test the strength of materials, etc., can solve the problems of single impact force signal form, large test bench volume, fixed occupancy ratio, etc., to achieve reliable design, The effect of eliminating fit clearance and low cost

Active Publication Date: 2017-10-27
SHANDONG UNIV
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Problems solved by technology

[0005] In order to solve the above problems, the present invention proposes a test device for testing the impact resistance of coated tools. For the problem of fixed ratio, low frequency, and large test bench volume, the impact force signal form, duty cycle and frequency can be adjusted by the signal generator, which can achieve greater impact force, small size, low cost, and is suitable for impact performance of coated tools test

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  • A test device for testing the impact resistance of coated tools
  • A test device for testing the impact resistance of coated tools
  • A test device for testing the impact resistance of coated tools

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] Such as figure 1 , figure 2 As shown, a test bench for testing the impact resistance of coated tools includes workbenches (1, 10, 13, 15), adapters (4-6) connected to force sensors 7, and piezoelectric actuators 9 The piezoelectric actuator 7 is connected to the force sensor 7 and the lead screw 11 respectively, and the piezoelectric actuator 7 is fixed on the workbench through the piezoelectric actuator platen 8 and the lead screw 11 through the support nut 12 and the fastening nut 14 .

[0035] Such as figure 1 , figure 2 , image 3 with Figure 4 As shown, the workbench includes an object stage 1, a piezoelectric actuator base 10, a nut base 13 and a fixed table 15, and the object stage 1, the piezoelectric actuator base 10 and the nut base 13 are respectively It is connected with the fixed platform 15 by bolts. There are two threaded...

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Abstract

The invention discloses a testing device for testing impact resistance of a coated tool. The testing apparatus comprises a fixing platform, wherein an objective table is arranged on one side of the fixing platform; a sample pressing plate is fixed on one side of the objective table and used for fixing a sample; the sample is in contact with adapters; the adapters are connected with a force sensor; the other side of the force sensor is connected with a piezoelectric actuator; the piezoelectric actuator is connected with a lead screw; both the piezoelectric actuator and the lead screw are fixed on the fixing platform through a piezoelectric actuator pressing plate and supporting nuts so as to apply voltage signals of different forms, different occupation ratios and different frequencies to the piezoelectric actuator, the piezoelectric actuator generates corresponding impact force, and the impact force is applied to the sample through the force sensor and the adapters. According to the testing device, the problems that the impact force signal form is single, the occupation ratio is fixed, the frequency is relatively low and the test table is larger in area when ballistic motion is realized by the conventional traction electromagnet and pneumatic device are effectively solved.

Description

technical field [0001] The invention relates to a test device for testing the impact resistance of coated cutting tools. Background technique [0002] Coated cutting tools are widely used in cutting processing. Compared with uncoated cutting tools, the thermal stress, cutting force and cutting tool friction and wear during cutting are effectively reduced, and the service life and cutting efficiency of cutting tools are significantly improved. There are many methods for testing the mechanical properties of coated tools, among which the impact test is used to simulate the impact of the workpiece on the coated tool during the cutting process, and test the impact resistance of the coated tool. [0003] In the impact test, the spherical indenter continuously impacts the surface of the coated tool with a certain frequency and impact force, causing elastic deformation or even plastic deformation on the surface of the coated tool. The cracks induced by the strain concentration prop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/38
Inventor 刘战强徐培利蔡玉奎庄鹏张涵王兵
Owner SHANDONG UNIV
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