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Method for measuring depth of parallelism of two planes

A measuring method, a technique for parallelism

Inactive Publication Date: 2014-03-26
NORTHEAST FORESTRY UNIVERSITY +1
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Problems solved by technology

Whether this parallelism meets the requirements is directly related to whether the woodworking planer has "head gnawing" and other bad phenomena during the working process, which seriously affects the processing quality of the planer.
At present, the method of measuring the longitudinal parallelism of the front and rear worktables of the woodworking planer is to measure with a flat ruler, a gauge block, and a feeler gauge. The front and rear worktables of the woodworking planer are longer (some front and rear worktables are more than 2m long) during measurement. , to measure the longitudinal parallelism of its front and rear workbenches, a flat ruler more than 2m long is required, which is expensive. Moreover, due to the long cantilever end of the flat ruler and the large deflection, the measurement error is large, and the feeler gauge is also easy to use in the inspection. Human errors are generated, which affect the accuracy of the measurement and increase the uncertainty of the measurement

Method used

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  • Method for measuring depth of parallelism of two planes
  • Method for measuring depth of parallelism of two planes
  • Method for measuring depth of parallelism of two planes

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Embodiment Construction

[0009] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments:

[0010] figure 1 As shown, the longitudinal parallelism of the front table 4 relative to the rear table 1 is to be measured. We regard the back table 1 as the reference plane, and the front table 4 as the measured plane. Divide the front and rear worktables into several measuring points H0, H1, H2, H3, H4...HN; Q0, Q1, Q2, Q3, Q4, Q5, Q6...QN with equal spacing A respectively. The distance A is the span of the level 3 or the bridge board placed under the level (in fact, when the level is measured, it should be connected end to end, that is, the measurement starting point of the latter span should coincide with the end point of the previous span measurement, and the distance A should be smaller than that of the previous span. The span of the level or bridge is one bearing length less). In this way, the indicated values ​​of each meas...

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Abstract

The invention discloses a method for measuring the depth of parallelism of two planes. The method is utilized to measure the longitudinal depth of parallelism of a front workbench and a rear workbench of a woodworking planning machine, and the method is accurate in measurement, high in accuracy, simple in operation, economical and applicative. The method is realized through the following technical scheme: the rear workbench of the woodworking planning machine is used as a datum plane, the front workbench is used as a measured plane, and the front workbench and the rear workbench are respectively divided into a plurality of measuring points with an equal interval A; indicating values are obtained by the measuring points of the rear workbench, the accumulated values of corresponding indicating values are calculated, an error curve L of the rear workbench is drawn, and the head point A and the tail point B of the error curve are connected to form a datum line AB; indicating values are obtained by the measuring points of the front workbench, the accumulated values of corresponding indicating values are calculated, and an error curve M of the front workbench is drawn; then the high vertex and the lower vertex of the curve M are respectively passed to form a parallel line parallel with the datum line AB, and the coordinate distance f in a z direction between the two parallel straight lines is the error value of the longitudinal depth of parallelism of the front workbench and the rear workbench conforming to the examination requirement.

Description

technical field [0001] The invention relates to a method for measuring the parallelism of two planes, in particular to a method for measuring the longitudinal parallelism of the front and rear workbenches of a woodworking planer. Background technique [0002] In the precision requirements of woodworking planers, the longitudinal parallelism of the front and rear worktables is stipulated as the geometric accuracy inspection item of the whole machine, which is a key inspection item. Whether this parallelism meets the requirements is directly related to whether the woodworking planer has "head gnawing" and other bad phenomena during the working process, which seriously affects the processing quality of the planer. At present, the method of measuring the longitudinal parallelism of the front and rear worktables of the woodworking planer is to measure with a flat ruler, a gauge block, and a feeler gauge. The front and rear worktables of the woodworking planer are longer (some fro...

Claims

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Application Information

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IPC IPC(8): G01B21/22
Inventor 张绍群花军陈光伟许威
Owner NORTHEAST FORESTRY UNIVERSITY
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