The two measuring staff butt joint of a kind of resistance-type flatness detector
Technical field
The utility model relates to a kind of butt joint flatness detector, and the two measuring staffs of resistance-type that detect in particular for the concordant degree of butt joint in the structural member docking operations such as curved surface, plane, solid of revolution dock the flatness detector.
Background technology
The pattern detection method is adopted in the detection of butt joint flatness at present mostly, and promptly than the sheet material that is docking together at grade whether the workman with the higher straight plate of concordant degree.This detection method can't guarantee precision, and labour intensity is big, wastes time and energy, and also is unfavorable for automated production.The more method of another kind of usefulness is to survey the distance of two boards material apart from fixing measurement mechanism respectively with the measurer of single measuring staffs such as dial gauge.This method operating process is loaded down with trivial details, and efficient is lower.
Summary of the invention
The purpose of this utility model is the deficiency that overcomes in the prior art, and a kind of simple in structure, concordant degree accuracy of detection height of butt joint is provided, and detection speed is fast, and is time saving and energy saving, is beneficial to the two measuring staff butt joint of the resistance-type flatness detector of automated production.
The two measuring staff butt joint of resistance-type of the present utility model flatness detector, comprise housing, be located at the loam cake of case top, be arranged with in the housing head stretch out the housing base plate about two measuring staffs, about the head of two measuring staffs be respectively equipped with gauge head, the outside of two measuring staffs is respectively equipped with the guide rail that is fixed on the inner walls about in the housing, about be respectively equipped with collets on two measuring staffs, and be respectively equipped with the slide block that moves along guide rail, about be provided with the slide wire resistance that parallels with it between two measuring staffs, the slide wire resistance symmetria bilateralis be provided with respectively be located at about the slide plate that links to each other of collets on two measuring staffs, be connected with connector lug respectively on two slide plates, the bottom of slide block is provided with spring, the location-plate of two measuring staffs about the upper end of housing is fixed with and wears, the two ends of slide wire resistance are provided with the insulation holder that is separately fixed at location-plate and housing bottom, on cover and be provided with collection, handle the signal processor of two measuring staff relative displacement signals.
Described housing bottom be provided with respectively about guiding two measuring staff lower guide to following orienting sleeve; Described location-plate be provided with respectively about guiding two measuring staff upper guide to last orienting sleeve; Described signal processor comprises voltage comparator, the redness that links to each other with voltage comparator, green LED and actuating signal output port.
Beneficial effect: adopt two measuring staff structures, can measure two tested structural members of butt joint simultaneously; The difference in height that tested structural member is detected the surface is converted into the length of resistance wire between two sliders, i.e. resistance value, and resistance change is converted into voltage signal changes; Voltage signal can be compared with setting value, and sends actuating signal according to comparative result by voltage comparator.Can detect the butt joint flatness of structural members such as curved surface, plane, solid of revolution, especially remarkably productive to the butt joint detection of solid of revolution, be applicable to automated production, it is simple in structure, measuring accuracy is high, and is easy to operate, cheap.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a signal processor theory diagram of the present utility model.
Among the figure: the tested structural member of 1-, 2-gauge head, 3-shell, the 4-slide block, 5-slide plate, 6-slide wire resistance, the 7-loam cake, 8-signal processor, 9-measuring staff, the 10-connector lug, 11-guide rail, 12-collets, 13-spring, the 14-holder that insulate, orienting sleeve under the 15-, the 16-location-plate, the last orienting sleeve of 17-, 18-actuating signal output port.
Embodiment
Following structure accompanying drawing is further described an embodiment of the present utility model:
As shown in Figure 1, the two measuring staff butt joint of resistance-type flatness detector is mainly by gauge head 2, housing 3, slide plate 5, slide wire resistance 6, signal processor 8, measuring staff 9, collets 12, spring 13 constitutes, the top of housing 3 is provided with loam cake 7, be symmetrical arranged in the housing 3 head stretch out the housing base plate about two measuring staffs 9, about the head of two measuring staffs 9 be respectively equipped with gauge head 2, be respectively equipped with the guide rail 11 that has groove on the inwall of both sides in the housing 3, be respectively equipped with about being fixed on the slide block 4 on two measuring staffs 9 in the groove of guide rail 11, slide block 4 moves up and down along guide rail 11, about be provided with slide wire resistance 6 between two measuring staffs 9, slide wire resistance 6 with about two measuring staffs 9 parallel, slide wire resistance 6 symmetria bilateralis are provided with two slide plates 5, two slide plates 5 respectively be located at about collets 12 on two measuring staffs 9 link to each other, be connected with connector lug 10 respectively on two slide plates 5, about be respectively equipped with collets 12 on two measuring staffs 9, the bottom of slide block 4 is provided with spring 13, the location-plate 16 of two measuring staffs 9 about the upper end of housing 3 is fixed with and wears, location-plate 16 be provided with respectively about guiding two measuring staff 9 upper guide to last orienting sleeve 17.The two ends of slide wire resistance 6 are provided with the insulation holder 14 that is separately fixed at location-plate 16 and housing 3 bottoms, and loam cake 7 is provided with collection, handles the signal processor 8 of two measuring staff relative displacement signals.Housing 3 bottoms be provided with respectively about guiding two measuring staff 9 lower guide to following orienting sleeve 15.Signal processor 8 comprises voltage comparator, and the model of voltage comparator is LM393.Be connected with redness, green LED and actuating signal output port 18 on the voltage comparator respectively, as shown in Figure 2.
Principle of work and process: two gauge heads 2 contact respectively with the tested structural member 1 of butt joint both sides, slit.In time reset for keeping contacting all the time and guaranteeing, spring 13 is kept certain amount of tension.In motion process, along with the fluctuation of tested structural member 1 height difference in both sides, two gauge heads 2 fluctuate thereupon, drive measuring staff 9 and produce axial displacement.Owing to be fixed with slide block 4 on the measuring staff 9, measuring staff 9 moved back and forth along guide rail 11 directions.When there is height difference in the surface of two tested structural members 1 of butt joint, will cause being fixed on the axial dislocation of 12 of two collets on two measuring staffs 9, be separately fixed at two axially dislocation of slide plates 5 generations on the collets 12 thereby make, by be connected on the slide plate 5 connector lug 10 with between two slide plates 5 axially dislocation be converted into voltage signal and input to signal processor 8, by the voltage comparator in the signal processor 8, voltage signal and setting value (permission height difference) are compared, send actuating signal by actuating signal output port 18 to topworks according to comparative result, luminance by green and red light emitting diodes shows whether satisfy the detection requirement simultaneously, the luminous expression of red light emitting diodes exceeds setting value, and the luminous expression of green LED does not exceed setting value.