CN2078867U - Micro-amplification optical-measuring instrument for miniature precision parts - Google Patents

Abstract

The utility model relates to a high precision microscopic amplifying optical measurer for non-contact comparison measurement on the one-dimensional or two-dimensional sizes of miniature precise parts. The utility model is the improvement of a general optical microscope, and is composed of an optical measuring micro-system, a special reticle, a special fixture, a precise digital-display micrometer for rasters, etc. The high precision microscopic amplifying optical measurer is widely suitable for precise measurement on any one-dimensional or two-dimensional sizes of miniature precise shaft class parts, shaped flat parts, etc. The utility model has the advantages of direct viewing, comprehension, high efficiency, precision, convenience, etc., and provides reliable means for the production detection and quality control of miniature precise parts.

Description

The micro-amplification optical measuring instrument of miniature precision part

The utility model is a kind of micro-amplification optical gauge of high precision that utilizes the optical measurement principle miniature precision part to be carried out precision measurement, be widely used in the precision measurement of miniature accurate axial workpiece, special-shaped level part equal segments size and overall size, for example to the production testing and the quality control of the various miniature precision part sizes of mechanical watch.

Mostly be to adopt clock gauge, dial gauge, ring gauge, feeler gauge and projector, universal optical micrometering instrument to carry out multiple direct measurement respectively to the measurement of needles of various sizes such as the length of miniature precision part, thickness, diameter in the past.For example for the measurement of the balance staff size in the mechanical watch, utilize exactly three kinds of metering outfits measure respectively needles of various sizes, adopt special horizontal clock gauge measurement axis to each section size, adopt horizontal clock gauge to measure outer garden diameter, adopt vertical projector to measure the appearance profile size, especially more more bother in the relative dimensions of measuring.In addition, it is right to be on axle body cone and the Cylinder intersecting lens as the design basis of not isometrical axle class miniature precision part, can't accurately locate in this reference position with traditional clock gauge, thereby can only adopt the peri position measurement to add the indirect method that value converts to obtain axial dimension, this causes measuring accuracy to be difficult to guarantee; As balance staff production in the mechanical watch, so scrappage is up to 30%.Traditional direct contact type miniature precision part measurement formality is numerous, and efficient is low, and error is big.

The purpose of this utility model provides a kind of contactless micro-amplification optical measuring instrument that can measure the miniature precision part size accurately of contrast formula directly perceived, the efficient height, and operation is easy, and precision is good.

The utility model is achieved in that referring to Fig. 1, Fig. 2 Fig. 1 is spatial structure signal of the present utility model, and Fig. 2 is optics micrometer system principle signal of the present utility model.The utility model is to amplify to improve on the instrument at general optical microphotograph to form.Eyepiece component 8, goniometer eyepiece 6, prism 17, objective lens unit 18, article carrying platform 15, light source 19 etc. have been formed optics micrometer system 5, and its ultimate principle as shown in Figure 2; Article carrying platform is installed on for 15 times and utilizes leading screw to move the plane coordinates regulating device 16 of adjusting this position of platform along X, Y direction respectively; Optics micrometer system 5 fuses by brachium pontis and elevation and subsidence regulating device 10, ring set on the elevation and subsidence regulating device 10, be enclosed within on the column 9 of pedestal 13, can move along column 9 epimere oscilaltions, but can screw then fixed optics micrometer system 5 of bolt and fine-tuning nut 11 lockings when moving to the position that needs, the structure of optics micrometer system 5 that the utility model is above-mentioned and plane coordinates regulating device 16 thereof, elevation and subsidence regulating device 10 and principle are entirely identical to general optical microphotograph and amplify instrument.The utility model is to be made of optics micrometer system 5 and special special-purpose graticule 7, unit clamp 14, accurate digital display grating mircrometer gauge 4 and pedestal 13 etc.Its feature mainly just is: graticule adopts special and the special-purpose one to one graticule 7 of measured workpiece, drawn the datum plane design drawing that accurately amplifies by measured workpiece true form and size on the optical glass of special-purpose graticule 7, be painted with the measuring basis line at some size section end lines on the figure, make the contrast benchmark during for measurement, so that measure with measured workpiece 1 contrast; Pack into the structure of optics micrometer system 1 of special-purpose graticule 7 can be designed to interchangeable structures such as interpolation frame, embedding frame, film translation or rotation disc; According to the concrete structure features of shape of measured workpiece 1 and the unit clamp 14 of corresponding design, unit clamp 14 clamping measured workpieces 1 back fixedly places on the article carrying platform 15; Accurate digital display grating mircrometer gauge 4 mainly by moving grating 2, decide grating 3 and digital indicator 12 is formed, move grating 2 and be installed on the article carrying platform 15, the probe that moves grating 2 can be adjacent to an end of measured workpiece 1; As general grating measuring instrument, move grating 2 and decide grating 3 corresponding aggregate erections, decide grating 3 and be fixed on the grating stand that is rigidly connected in pedestal, illustrate as Fig. 1.During measurement because moving grating 2 and measured workpiece 1 together can be along with article carrying platform 15 move and displacement, thereby moving grating 2 and decide also to take place between the grating 3 variation that relative displacement produces grating fringe, this variation is passed through digital indicator 12 and is directly shown reading; Accurate digital display grating mircrometer gauge 4 can be installed on X, Y either direction or be installed on X, Y both direction simultaneously, and nationality is with the one dimension or the two-dimensional of measuring workpieces.

The utility model is to be used to measure miniature precision part in addition like this: adjust optics micrometer system 5 earlier, selected suitable accurate enlargement ratio is corresponding transposing in, that satisfy the workpiece for measurement accuracy requirement, by the special-purpose graticule 7 of the accurate amplification of measured workpiece physical size; Simultaneously, utilize corresponding unit clamp 14 clamping measured workpieces fixedly to be installed on the article carrying platform 15, can make the probe of grating 2 be close to an end of measured workpiece 1, regulate plane coordinates regulating device 16 and elevation and subsidence regulating device 10 again and make that measured workpiece datum plane design drawing and measured workpiece are in kind on the special-purpose graticule 7 tentatively overlaps, aim at that root measuring basis line of need survey size section one end; Then make precision digital show the mircrometer gauge zero clearing, continue to adjust plane coordinates regulating device 16 subsequently, another end line of size section to be measured of datum plane design drawing on measured workpiece 1 and the special-purpose graticule 7 is aimed at, at this moment, depart between the special-purpose graticule 7 of that end of former aligning and the measuring basis line on the measured workpiece 1, bias is the margin of error of measured size section; Because moving of article carrying platform 15, moving grating 2 and measured workpiece move thereupon, corresponding moving grating 2 with decide between the grating 3 relative displacement to take place demonstration on its digital indicator 12 after this margin of error is promptly handled by accurate digital display grating mircrometer gauge 4.In like manner, can measure any one dimension or the two-dimensional of measured workpiece as required.

The utility model is compared with measurement means with aforementioned original miniature precision part survey instrument, has series of advantages such as directly perceived, efficient, comprehensive, easy, accurate, reliable.The special-purpose graticule that the utility model has taked to paint the datum plane design drawing that is carved with accurate amplification has been realized the non-cpntact measurement of contrast formula directly perceived, can finish the mensuration of any one dimension or two-dimensional at one stroke, reduced the link that error produces, overcome the measurement blind area of traditional measurement instrument, precision and the efficient measured have been improved, for miniature precision part production testing and quality control provide reliable means and instrument.

The utility model practices in  17.2 machinery woman table balance staff productions.The special-purpose graticule 7 of painting the datum plane design drawing that is carved with measured workpiece of this balance staff as shown in Figure 3, its precision is up to 1 micron, the accurate digital display grating mircrometer gauge 4 minimum displayed values that X, Building Y mark are connected also are 1 micron, 1 micron of measuring accuracy.Guaranteed the accuracy requirement of this balance staff, balance staff unit consumption rate descends greatly.

Claims (1)

1. one kind is amplified instrument by general optical microphotograph and improves the miniature precision part optical measuring instrument that forms, its optics micrometer system (5) and plane coordinates regulating device (16) thereof, the structure of elevation and subsidence regulating device (10) etc. is identical with general optical microphotograph measurement by magnification instrument, it is characterized in that adopting the special special-purpose graduation utmost point (7), unit clamp (14) and accurate digital display grating mircrometer gauge (4), special-purpose graticule (7) is corresponding one by one with measured workpiece (1), drawn the datum plane design drawing that accurately amplifies by measured workpiece (1) true form and size on its optical glass, be painted with some measuring basis lines on the figure, make the contrast benchmark during for measurement, measure with the measured workpiece contrast; The corresponding design specialized anchor clamps of concrete structure (14) according to measured workpiece (1) with features of shape; Accurate digital display grating mircrometer gauge (4) mainly by moving grating (2), decide grating (3) and digital indicator (12) is formed, moving grating (2) is installed on the article carrying platform (15), its probe can be adjacent to an end of measured workpiece (1), move grating (2) and decide the corresponding aggregate erection of grating (3), decide grating (3) and be fixed on the grating stand that is rigidly connected in pedestal (13); Accurate digital display grating mircrometer gauge 4 can be installed on X, Y either direction or be installed on X, Y both direction simultaneously.

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