Honing surface roughness prediction method considering oilstone yielding

A surface roughness and prediction method technology, applied in honing machine tools, metal processing equipment, manufacturing tools, etc., can solve problems such as inconstant radial feed speed, uneven force on the expanding cone, and influence on radial feed speed, etc. , to achieve the effects of reducing production costs, improving production efficiency, saving time and manpower and material resources

Active Publication Date: 2020-03-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

This model reflects the influence of the honing rod speed and reciprocating speed on the roughness, and considers that each radial feed is constant, that is, the radial feed speed is constant, which is different from the actual honing process. The whetstone will retreat, resulting in the actual radial feed The speed is not constant, therefore, it cannot reflect the effect of radial feed rate on roughness
Moreover, the model can only reflect the influence trend of processing parameters on roughness, but cannot predict the roughness value, so it can only be used for qualitative analysis and c...

Method used

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  • Honing surface roughness prediction method considering oilstone yielding
  • Honing surface roughness prediction method considering oilstone yielding
  • Honing surface roughness prediction method considering oilstone yielding

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Embodiment 1

[0057] Such as figure 1 As shown, a flow chart of a honing surface roughness prediction method considering the oilstone retreat, specifically includes the following steps:

[0058] Step 1, obtaining the geometric parameters and motion parameters of the honing oilstone working surface;

[0059] Step 2, using a white light interferometer or a roughness meter to obtain the roughness of the honing workpiece surface;

[0060] Step 3. Establish a honing surface roughness prediction model:

[0061] Step 4. Determination of model parameters through experiments.

[0062] figure 2 It is a schematic diagram of the scratches of the abrasive grains of the honing stone on the surface of the workpiece. The abrasive grains on the honing stone pass through the workpiece with certain processing parameters to leave grooves (height h, angle 2θ), and finally form a surface with a specific roughness value .

[0063] image 3 Schematic diagram of honing process; refer to image 3 As shown, du...

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Abstract

The invention discloses a honing surface roughness prediction method considering oilstone yielding, which comprises the following steps of: firstly, obtaining geometric parameters and honing process motion parameters of the surface of a honing oilstone, and finally predicting the honing surface roughness under the condition of considering grinding wheel yielding. The honing roughness is theoretically deduced according to the grinding principle, and the honing roughness of a small-diameter deep hole can be calculated by optimizing parameters through a small number of tests, so that a theoretical basis is provided for parameter selection of honing of the small-diameter deep hole, the production efficiency of enterprises is improved, and the production cost of the enterprises is reduced.

Description

technical field [0001] The invention relates to a method for predicting the surface roughness of honing, in particular to a method for predicting the surface roughness in consideration of oilstone retreat during small hole honing. Background technique [0002] Honing is a method of finishing the workpiece surface at a low cutting speed. It is a special form of grinding. It can not only remove a large machining allowance, but also improve dimensional accuracy, geometric shape accuracy and Effective way to reduce surface roughness. Honing is to use one or more oilstones (strip-shaped consolidated abrasives made of diamond or cubic boron nitride abrasives) installed around the honing head, and the oilstones are expanded radially by the expansion mechanism to press them against the workpiece. hole walls in order to produce a certain surface contact. Make the honing head rotate and reciprocate at the same time, the parts do not move, or the honing head only rotates, and the wor...

Claims

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Application Information

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IPC IPC(8): B24B33/02B24B33/06G06F30/20G06F111/10
CPCB24B33/02B24B33/06
Inventor 杨长勇苏浩何鸿宇傅玉灿徐九华丁文锋苏宏华
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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