Three-pin Auxiliary Test System
A technology of auxiliary testing and probe, applied in the field of measurement, can solve the problems of inconvenient use of the workbench, easy formation of gaps, poor straightness of three needles, etc.
Active Publication Date: 2016-08-31
XIAN AERO ENGINE CONTROLS
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Problems solved by technology
[0012] First of all, the measurement uncertainty introduced by the straightness error of the three needles is too large, that is, more straightness errors are introduced into the diameter measurement results
Due to the structure and use of the three needles, the straightness of the three needles is generally not good
When using a traditional ribbed workbench for measurement, measurement errors are caused by several common deformations of the three needles
For example, when the middle part of the three needles is arched and there are load-bearing ribs on both sides, it is easy to form a gap, especially for some twisted three needles, even if the three needles are turned over on the traditional measuring head, the error caused by overhead cannot be eliminated
[0013] Secondly, the original workbench is inconvenient to use
The length of the three needles is generally about 50mm. According to the requirements of the inspection regulations, in order to reduce the influence of the roundness error on the measurement results when verifying the diameter, the three needles to be inspected must be rotated several times in the axial direction for measurement. Use a large bearing surface When the workbench is equipped with ribs, the three needles will be attached to the workbench, and the rotation operation is more difficult. The three needles are completely carried on the workbench, and can only be turned over with tweezers
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[0035] see figure 1 as well as figure 2 , the present invention provides a three-needle auxiliary testing system, including a length gauge 4, a length gauge force regulator and a three-needle verification device, the three-needle verification device includes a probe 3 and a three-needle measurement workbench; the three-needle measurement work The table is a single-rib workbench; the probe 3 is set at the end of the length gauge 4; the probe 3 is an ax-shaped probe that is different from the traditional spherical probe and the planar probe; the three needles 5 to be measured are placed on the probe 3 Between the single-rib workbench; the length gauge force regulator controls the length gauge 4 and drives the probe 3 through the length gauge 4 for auxiliary testing.
[0036] The single-rib workbench includes the base surface 2 and the rib 1 set on the base surface 2; the rib 1 forms a single-rib structure on the base surface 2; Parallel, and the three needles 5 to be tested a...
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The invention relates to a three-needle auxiliary testing system, which includes a length gauge, a length gauge measuring force regulator and a three-needle verification device. The three-needle verification device includes a probe and a three-needle measurement workbench; The measuring head is set at the end of the length gauge; the measuring head is an ax-shaped measuring head; the three needles to be tested are placed between the measuring head and the single-rib workbench; the length gauge force regulator controls the length gauge and is driven by the length gauge Probe for auxiliary testing. The invention provides a three-needle auxiliary test system with small measurement error and controllable force measurement.
Description
technical field [0001] The invention belongs to the technical field of measurement and relates to a three-pin auxiliary test system. Background technique [0002] At present, when testing the three needles, the commonly used system is a length measuring machine or a combination system of an optical gauge, a gauge block, and a workbench. [0003] When the system tests the three needles, it needs the assistance of a length gauge and a three-needle verification workbench. [0004] The length gauge used is the C2500 length gauge, which is a grating-type length measuring force sensor with a retractable probe produced by HEIDENHAIN. The expansion and contraction of the probe, that is, the touching process is completely automatically controlled by the circuit. There are two buttons and a three-stage switch; [0005] in: [0006] The three-stage switch is used to select the force measurement. According to its user manual, the three-stage switch corresponds to the force measuremen...
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IPC IPC(8): G01B21/10
Inventor 李琳周宇涛项阳
Owner XIAN AERO ENGINE CONTROLS