High-speed cutting experiment device based on Hopkinson pressure lever loading technology

A Hopkinson pressure bar and high-speed cutting technology, applied in the field of metal cutting, can solve problems such as difficult and steady-state high-speed cutting, and achieve the effect of short duration and high speed

Active Publication Date: 2011-09-07
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the current problem that it is difficult to realize steady-state high-speed cutting, the...

Method used

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  • High-speed cutting experiment device based on Hopkinson pressure lever loading technology
  • High-speed cutting experiment device based on Hopkinson pressure lever loading technology
  • High-speed cutting experiment device based on Hopkinson pressure lever loading technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The whole device is installed on the support, and the specific implementation steps are as follows:

[0026] 1. If figure 1 As shown, the thickness is 6 mm, the rake angle is 0 0 , back angle 15 0 The tool 8 is mounted on one end of the incident rod 5 with a diameter of Φ13 mm through the tool clamping device 7 . The injection rod is placed on the guide groove 6 to ensure that the other end of the injection rod is facing the outlet of the light air gun and keeps a distance of about 100 mm from the muzzle.

[0027] 2. Install the two workpiece clamping and high-precision positioning devices 9 symmetrically on the high-precision lifting platform 13 along the axis of the light air gun and the incident rod. During the installation process, ensure that the distance between the two is slightly larger than the width of the tool and as close as possible to the tool . Process two workpieces with a length of 60 mm, a width of 40 mm, and a thickness of 4 mm and install them on...

Embodiment 2

[0033] In the case of keeping the parameters in Example 1 unchanged, adjust the air pressure value of the light air gun 1 to make it 0.8 MPa, and finally realize the cutting experiment with a cutting speed of 880 m / min.

Embodiment 3

[0035] In the case of keeping the parameters in Example 1 unchanged, adjust the air pressure value of the light air gun 1 to make it 0.25 MPa, and finally realize the cutting experiment with a cutting speed of 200 m / min.

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PUM

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Abstract

The invention discloses a high-speed cutting experiment device based on a Hopkinson pressure lever loading technology. The device comprises a power mechanism, a cutting mechanism, a fixing mechanism and a collecting mechanism which are arranged in sequence along an axis, wherein the power mechanism is used for shooting a bullet to the cutting mechanism; an incident bar of the cutting mechanism isdriven to move forwards when the bullet is collided with the cutting mechanism; along with the forward movement of the incident bar, a cutter at the front end of the incident bar cuts a workpiece fixed on the fixing mechanism; and the collecting mechanism is used for resisting the forward incident bar to stop the incident bar quickly. The entire experiment device is built on the basis of the Hopkinson pressure lever loading technology, the entire cutting process is quick and short, and the impact energy is far greater than the energy needed by cutting, so that a stable process is achieved andpreconditions are provided for the stable cutting process.

Description

[0001] technical field [0002] The invention belongs to the field of metal cutting, in particular to a high-speed orthogonal cutting experimental device based on the Hopkinson compression bar loading technology. Background technique [0003] High-speed cutting technology is an advanced manufacturing technology that has risen rapidly in the past ten years, and represents the mainstream direction of modern processing technology. The mechanism of high-speed cutting is the basis of the development of high-speed cutting technology. However, people still know about many phenomena in the process of high-speed cutting but do not know why. The mechanism of high-speed cutting is still unclear, which seriously restricts the development and application of high-speed cutting technology. In order to better understand the mechanism of high-speed cutting, it is urgent to develop an effective experimental device to study the chip deformation behavior and related laws during high-speed cut...

Claims

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Application Information

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IPC IPC(8): G01N3/58
Inventor 戴兰宏叶贵根马维凌中蒋敏强关永军
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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