A kind of big external diameter center of lens thickness detection apparatus
The utility model relates to a kind of center thickness pick-up unit of big external diameter eyeglass.
In the optics cold working industry of present stage, generally adopt large-scale measurer that the center thickness of big external diameter eyeglass is checked.Large-scale measurer costs an arm and a leg, and cost is higher.And large-scale measurer is comparatively heavy, and operation inconvenience is prone to cause the eyeglass quality bad, checks that practicality is relatively poor in batches.
Summary of the invention
The purpose of the utility model provides a kind of simple in structure, practical, and precision is high, and operating efficiency is high, and the center thickness pick-up unit of the wider big external diameter eyeglass of versatility.
The utility model is to solve through following technical proposal: this device mainly comprises monitor station; Dial framework; Dial gauge and eyeglass, the dial framework of dial gauge is located on the monitor station, and dial gauge is located on the dial framework; Wherein detecting the chutes that are provided with three edge circle radial symmetry distributions on the table top; And be provided with in each chute and can on two chutes, be provided with and can match with eyeglass along chute slip and the locating bar that can lock along chute slip and the support stick support lenses that can lock, the dial gauge on the dial framework is in the top of the crossing point of axes of three chutes.
The beneficial effect of the utility model is the chutes that are provided with three edge circle radial symmetry distributions on the table top detecting; And be provided with in the chute and can cooperate the location with eyeglass along support stick support lenses and the locating bar that chute slides; Make the utlity model has simple in structure, practical; Precision is high, and operating efficiency is high, and the wider characteristics of versatility.
Description of drawings
Fig. 1 is the structural front view of the utility model embodiment.
Fig. 2 is the structure vertical view of the utility model embodiment.
As shown in the figure, the utility model embodiment comprises eyeglass 1, support stick 2, limit stick 3, inspecting stand 4, dial framework 5 and dial gauge 6.Wherein on monitor station 4, be provided with the chute 7 that three round radial symmetry distribute, dial gauge 6 is installed in the top of the crossing point of axes of three chutes 7 through being fixed on dial framework 5 on the monitor station 4.All being equipped with one on each chute 7 can be along the support stick 2 of chute slip and locking, and its three support sticks 2 are that the center of circle is circumference uniform distribution with chute 7 crossing point of axes.Eyeglass 1 lies on three support sticks 2.Be equipped with on two chutes 7 therein and can slide and the limit stick 3 of locking along chute, these two limit sticks 3 fit tightly with the external diameter of eyeglass 1, make the crossing point of axes of three chutes 7 of centrally aligned of eyeglass 1.
The principle of measuring: this cover pick-up unit is based on relative measurement method and carries out work.Measure earlier the center thickness value H of an eyeglass with the direct method of measurement, and with this eyeglass as follow-up measuring benchmark eyeglass.The benchmark eyeglass is put into device measure, draw reading Ha.Take out the benchmark eyeglass, put into eyeglass to be measured and measure, draw reading Hb, the practical center one-tenth-value thickness 1/10=Hb-Ha+H of eyeglass to be measured.