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A method for establishing a measuring coordinate system of a side-mounted measuring machine for large gears

A technology for measuring coordinate systems and large gears, applied to measuring devices, optical devices, instruments, etc., can solve the problems of low precision, achieve the effect of improving the establishment of precision and avoiding its own precision constraints

Active Publication Date: 2019-11-26
西安秦川思源测量仪器有限公司
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Problems solved by technology

[0011] The present invention provides a method for establishing a measuring coordinate system of a side-mounted measuring machine for measuring large gears, so as to overcome the problem of low precision in the aforementioned prior art

Method used

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  • A method for establishing a measuring coordinate system of a side-mounted measuring machine for large gears
  • A method for establishing a measuring coordinate system of a side-mounted measuring machine for large gears
  • A method for establishing a measuring coordinate system of a side-mounted measuring machine for large gears

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Embodiment

[0054] A method for establishing a measuring coordinate system for a side-mounted measuring machine for large gears, the specific steps are:

[0055] Step 1: Place the laser head 1005 on the measuring head mounting frame 1007 through its mounting base 1006, and ensure that the fan-shaped laser plane formed by the laser head 1005 outgoing beam is parallel to the XOY plane of the measuring machine coordinate system. The formation of the laser plane can be adopted It is formed by the known method of rotating laser beams, and can also be formed by using known optical elements such as ring mirrors or cylindrical lenses;

[0056] Step 2: Place the target 1003 on the upper surface of the gear 1001 and directly in front of the laser head 1005, set this position as P1 position, rotate the photosensitive surface of the target 1003 to face the laser, adjust the measuring machine so that the laser is perpendicular to the target plane and passes through the target center. Here the target ...

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Abstract

The invention relates to a measuring-coordinate system establishing method of a side-arranged measuring machine used for a large gear. The measuring-coordinate system establishing method comprises thesteps of: firstly, irradiating a laser plane formed by a laser head on a target, and making a pointing direction of a Z axis of the measuring machine to be parallel with a pointing direction of a revolution axis of the gear according to a light spot position on the target; secondly, placing a cuboid-shaped measuring gauge with the length L on the upper end surface of the gear transversely, and measuring an end surface central position of one end of the measuring gauge and two side surface symmetrical positions thereof in a contact manner by means of a measuring head of the measuring machine to obtain coordinates (x1, y1), (x2, y2) , (x3, y3) of the three points; and rotating the gear by 180 degrees so that the other end of the measuring gauge is placed on a touch-measurable position of the measuring head, and acquiring coordinates (x4, y4), (x5, y5), (x6, y6) of the three points again in the same way, thereby being capable of determining specific coordinate values (x0, y0) of a projection point of the axis of the gear on a measuring machine coordinate system XOY plane, x0=(x3+x6-L) / 2, y0=(y1+y2+y4+y5) / 4, and realizing the establishment of a measuring coordinate system. The measuring-coordinate system establishing method does not rely on the manufacturing precision of the gear, improves the establishment precision of the coordinate system, and is more suitable for high-precision measurement of the large gear.

Description

technical field [0001] The invention relates to the technical field of measuring large gears, in particular to a method for establishing a measuring coordinate system for a side-mounted gear measuring machine when measuring large gears. Background technique [0002] Large gears are key components of large equipment, and are widely used in important fields such as power generation, building materials, ships, and mining machinery. Precise measurement of large gears is much more difficult than conventional gears due to the increased characteristic parameters, size and weight. [0003] The weight and volume of conventional size gears are relatively small, and its off-line measurement is relatively easy to implement. Its high-precision measurement can usually be realized on the gear measurement center. The gear measurement center is essentially a four-coordinate measuring machine with a rotary table and three linear axes. The three linear axes are orthogonal to each other to for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00
CPCG01B11/005
Inventor 李少康王建华卢春霞郑中鹏靳艳婷祝强劳奇成
Owner 西安秦川思源测量仪器有限公司
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