CN202216637U

CN202216637U - Arc section radium fast-measuring tool

Info

Publication number: CN202216637U
Application number: CN201120323051XU
Authority: CN
Inventors: 赖晓渝
Original assignee: Cixi Huili Machinery & Electric Co Ltd
Current assignee: Cixi Huili Machinery & Electric Co Ltd
Priority date: 2011-08-31
Filing date: 2011-08-31
Publication date: 2012-05-09
Anticipated expiration: 2021-08-31

Abstract

An arc section radium fast-measuring tool comprises an indicator stand and a dial indicator. The dial indicator is installed in the middle of the indicator stand. The dial indicator is provided with a lengthened measuring bar. The indicator stand is in vertically-symmetrical distribution with the dial indicator as the center. A depended wheel is installed respectively at the upper end and the lower end of the indicator stand. The arc section radium fast-measuring tool lowers labor strength, and is high in detection efficiency and effectively adapted to mass production.

Description

The quick survey instrument of arc section radius

Technical field

The utility model belongs to a kind of arc section radius measurement instrument.

Background technology

Existing express locomotive axle bed product, the arc surface that has the bearing shell of two groups of different-diameters to install above it, the radius of this arc surface not only precision is high; And segmental arc is less than 1/2 girth; If this structure adopts conventional micrometer inside caliper or internal diameter scale to detect, and generally is to measure through three-coordinate measuring machine (CMM), under the production in enormous quantities situation; Adopt the CMM measurement that the shortcoming of two aspects is arranged: (1) on-the-spot transferring product is too many, and labour intensity is big; (2) detection efficiency is low, and property is poor during the utmost point, and is also big to the CMM loss, and production in enormous quantities is far from suitable.Therefore, press for a kind of measurer that can just measure these two groups of arc radius in the production scene fast and accurately.

Summary of the invention

For the deficiency that labour intensity is big, detection efficiency is low, incompatibility is produced in batches that overcomes existing arc section radius measurement instrument, the utility model provides a kind of labour intensity, high, effective quick survey instrument of arc section radius that adapts to batch process of detection efficiency of reducing.

The utility model solves the technical scheme that its technical matters adopted:

The quick survey instrument of a kind of arc section radius; Said survey instrument comprises dial framework and dial gauge, and said dial gauge is installed in said dial framework middle part, and said dial gauge has the lengthening gauge rod; Said dial framework is that the center is symmetrically distributed up and down with said dial gauge, at the upper and lower side of said dial framework roller is installed respectively.

The technical conceive of the utility model is: utilize 3 principles that can confirm a circle, when measuring, be close to two rollers on the dial framework earlier on the arc surface with the interior ring gauge of measured size equal values, the dial gauge gauge head also contacts with arc surface, and pointer is set to zero.At this moment, the measurer that check and correction is good is in the measurement state identical with product measured size theoretical value, and when on the measured circle cambered surface that is placed on measurer with same action product again, dial gauge can be read a numerical value, and this numerical value is exactly the deviation of measured size.

The beneficial effect of the utility model mainly shows: reduce labour intensity, high, the effectively adaptation batch process of detection efficiency.

Description of drawings

Fig. 1 is the structural representation of the quick survey instrument of arc section radius;

Fig. 2 is the side view of Fig. 1.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

With reference to Fig. 1, Fig. 2; The quick survey instrument of a kind of arc section radius; Said survey instrument comprises dial framework 1 and dial gauge 2, and said dial gauge 2 is installed in said dial framework 1 middle part, and said dial gauge 2 has lengthening gauge rod 3; Said dial framework 1 is that the center is symmetrically distributed up and down with said dial gauge, at the upper and lower side of said dial framework 1 roller 4 is installed respectively.

The survey instrument of present embodiment comprises that two groups have the interior ring gauge of same radius value, the dial framework that is used to measure and a reading numerical values dial gauge with the product arc surface; Two rollers on the dial framework and the gauge head of dial gauge are formed one 3 fundamental points of surveying circle.

The interior ring gauge arc section radius measurement method of present embodiment may further comprise the steps:

(1) preparation measuring appliance (seeing accompanying drawing 1), this measuring appliance is made up of the interior ring gauge identical with measured diameter, special-purpose dial framework and dial gauge;

(2) dial gauge is installed on the special-purpose dial framework, adjusts to suitable position to the measuring head of table, and screw tightening is fixed;

(3) the measurer school zero: the roller on the measurer is close in the standard identical with measured size on the ring gauge arc surface, and the gauge head of dial gauge contacts with the arc surface of ring gauge, and the pointer of table is transferred to zero-bit, the proof-reading end;

(4) be close on the measured circle cambered surface of product with the good measurer roller of check and correction, the table gauge head withstands on the measured circle cambered surface, and indicator is read a numerical value, and this numerical value is exactly the deviation of its radius;

This measuring method is a kind of method of simulating contrast; Quick, simple, practical characteristics are arranged, measure the numerical value certificate of coming out and measure numerical value compare error＜0.02mm with CMM, accuracy is high; Satisfy the detection requirement of product, the user is also at the identical measurer that uses us the to provide product that carries out an acceptance inspection.

Claims

1. quick survey instrument of arc section radius; It is characterized in that: said survey instrument comprises dial framework and dial gauge; Said dial gauge is installed in said dial framework middle part; Said dial gauge has the lengthening gauge rod, and said dial framework is that the center is symmetrically distributed up and down with said dial gauge, at the upper and lower side of said dial framework roller is installed respectively.