Quick positioning measuring device and method for three-coordinate fixture

Abstract

The invention discloses a quick positioning measuring device for a three-coordinate fixture. The quick positioning measuring device comprises a measuring platform, a multi-threaded-hole protective bottom plate, the part fixture, a measuring machine, positioning pin pressing columns, a quick elastic clamp and a measuring fixture quickly-adjustable device. The positioning pin pressing columns and the quick elastic clamp lock and position the part fixture through a three-point layout. The measuring fixture quickly-adjustable device is of a long-strip-shaped structure arranged on the side face ofthe bottom plate of the part fixture, one end of the measuring fixture quickly-adjustable device is fixedly connected with the bottom plate of the part fixture, and the other end of the measuring fixture quickly-adjustable device is provided with a relative position fine adjusting part of the bottom plate of the part fixture; and the side face of the middle, back onto the bottom plate, between thetwo ends is attached to one of the three-point-type positioning pin pressing columns in an abutting mode, and thus fine adjusting of the relative position fine adjusting part obtains support reverseforce from the positioning pin pressing column to push the bottom plate to move so as to adjust the parallel states of a to-be-measured part and the part fixture relative to the measuring machine. Through structural simplification and optimization, the rough adjusting and fine adjusting precision is high.

Description

technical field [0001] The invention belongs to the field of three-coordinate measurement, and in particular relates to a fast positioning and measuring device and method for a three-coordinate fixture. Background technique [0002] Three-coordinate measurement has been widely used in various sectors such as machinery manufacturing, automobile industry, electronics industry, aerospace industry and national defense industry, and has become an indispensable measurement equipment for modern industrial measurement and quality control. A wide range of sectors and industries are involved. In the scope of application, three-coordinate measurement also basically covers mechanical parts and electronic components, as well as various shape tolerances and position tolerances. [0003] At present, the three coordinates have the following problems in the multi-part line measurement and batch measurement devices and measurement methods: [0004] 1. Among the existing measuring devices an...

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Problems solved by technology

[0004] 1. Among the existing measuring devices and methods (such as Figure 8 As mentioned above), the adjustment and positioning of the fixture depends on pure manual experience, which is greatly affected by the personnel's operating methods and skill level, the positioning takes a long time, and the positioning is not accurate enough;

[0005] 2. Only a small number of high-end companies are equipped with high-cost three-coordinate measuring equipment with dedicated planes and dedicated lines. However, the three-coordinate detection objects of most small and medium-sized or OEM companies are often not a single part, and it is necessary to switch between different types of parts to complete the detection every day or Inspection tasks per shift;

[0006] 3. After parts are switched, the positioning of parts and fixtures needs to be adjusted purely by experience. The positioning time is doubled, the cumulative error of positioning accuracy is large, and the positioning of fixtures cannot be unified. A series of auxiliary adjustment steps are required. Set automatic operation program;

[0007] 4. The switching detection of different types of parts has resulted in an increase in the number of working steps and time-consuming detection. The level of personnel skills is high, the positioning or repetition accuracy of parts is not high, and too many human operations affect the safety of equipment.

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