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Calculation method of function sizes of part hole series

A calculation method and a technology of part holes, which are applied in calculation, special data processing applications, instruments, etc., can solve problems such as calculation results that are difficult to achieve accurate solutions

Active Publication Date: 2013-09-18
陈磊磊
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  • Application Information

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Problems solved by technology

The calculation results of these methods are difficult to achieve accurate solutions, and further research is needed

Method used

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  • Calculation method of function sizes of part hole series
  • Calculation method of function sizes of part hole series
  • Calculation method of function sizes of part hole series

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Embodiment 1

[0059] A calculation method for the functioning dimension of a hole system of a part, which is used to calculate the minimum circumscribed dimension of a hole system, as attached figure 1 As shown, it mainly includes the following steps:

[0060] Step 1: Place the measured part on the measurement platform, and extract a series of measuring points on each hole; obtain the ideal design position of each hole according to the drawing information - the theoretical coordinates of the fixed point on the axis of each hole.

[0061] Step 2: On the datum plane, extract the measurement points of the datum features, and apply the minimum area method to fit the datum plane to obtain the normal vector of the datum plane; perform coordinate transformation to make the coordinate system z The axis is parallel to the normal vector of the datum plane; at the same time, the measuring points on each hole are also subjected to the same coordinate transformation. After the coordinate transformation...

Embodiment 2

[0083] A calculation method for the functioning dimension of a hole system of a part, which is used to calculate the maximum inscribed size of a hole system, as attached figure 1 As shown, it mainly includes the following steps:

[0084] Step 1: Place the measured part on the measurement platform, and extract a series of measuring points on each hole; obtain the ideal design position of each hole according to the drawing information - the theoretical coordinates of the fixed point on the axis of each hole.

[0085] Step 2: On the datum plane, extract the measurement points of the datum features, and apply the minimum area method to fit the datum plane, and obtain the normal vector of the datum plane; carry out coordinate transformation, so that the coordinate system z The axis is parallel to the normal vector of the datum plane; at the same time, the measuring points on each hole are also subjected to the same coordinate transformation. After the coordinate transformation, th...

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Abstract

The invention provides a calculation method of function sizes of part hole series. The method comprises the steps of measuring and obtaining measuring point coordinates on various measured holes, obtaining ideal positions of the holes according to drawing information, converting into a function size of a circle for calculation through coordinate translation, applying a method for solving a nonlinear equation system, changing the diameter of a function surface continuously till a criterion is met, and outputting the function sizes of the hole series and position coordinates of the holes. The method can accurately calculate optimal criterion meeting values of the function sizes of the hole series and the position coordinates of the holes.

Description

technical field [0001] The invention relates to a calculation method of the hole system action size of a part, which belongs to the field of precision measurement and computer application, and can be used for the qualification detection of the hole system action size and position degree in geometric products under various circumstances, and is used for processing and processing technology provide guidance for improvement. Background technique [0002] In the assembly of box body parts, the position degree is often used to control the error between the hole system and the hole system and the datum. At the same time, the position degree is one of the items with the most difficult evaluation and the most application forms in the form and position error. Therefore, the research on position evaluation technology has important practical production value. In addition, the maximum inscribed size and the minimum circumscribed size of the hole system are collectively referred to as t...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 黄美发陈磊磊钟艳茹孙永厚宫文峰
Owner 陈磊磊
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