The chamfering measuring apparatus of diameter
The utility model relates to a kind of measurer that is used for the machining aspect, relates in particular to a kind of chamfering measuring apparatus of diameter.
According to the requirement of engineering drawing, in mechanical processing process, carry out chamfer machining to tubular mechanical component end face, concentrate or be convenient to assembling to reduce stress.Chamfering is a foolproof operation in mechanical processing process, so at home, control to chamfering does not also take much count of, the width measure of chamfering is also paid attention to inadequately, there is not special measuring tool to be used to detect the chamfering diameter yet, the specific purpose tool of Hole chamfering diameter in particularly not having to measure, generally all be to use the vernier caliper approximate measure, owing to measure people's measurement level, reading level difference, cause the measurement result diversity ratio bigger, cause the chamfer dimesion that marks on conventional machine work chamfer dimesion and the engineering drawing that bigger error is arranged, can not meet design requirement or request for utilization comprehensively.
The utility model content
The utility model is in order to solve weak point of the prior art, provide a kind of simple in structure, measure chamfering measuring apparatus of diameter convenient, that be used to control the chamfering width.
For solving the problems of the technologies described above, chamfering measuring apparatus of diameter of the present utility model, it comprises base, and base is provided with pillar, and the pillar upper end is provided with measurement mechanism.
Described measurement mechanism comprises the reference column of fixedlying connected with pillar, reference column is consistent with the pillar center line, reference column top is that cylindrical, bottom is for conical, the circular conical surface diameter of reference column bottom is greater than the face of cylinder, top diameter, on reference column lower cone face, be arranged with two through holes that are communicated with the bottom surface, the through hole center line is parallel with the pillar center line, is equiped with the sounding rod of dial gauge in the through hole, and the measuring head of dial gauge protrudes from the reference column circular conical surface.
The sounding rod of described dial gauge and through hole are connected by the screw roof pressure that is located at the reference column lower side.
Adopt said structure, earlier use a standardized element that dial gauge is adjusted benchmark in advance, the part that will need then to measure is enclosed within on the reference column of measurement mechanism, contacting of measuring head by part end face and dial gauge, can measure part end face chamfering diameter, compare with standardized element again, tell the whether requirement up to specification of tested part end face chamfering diameter, and accurately detect the deviation of chamfering diameter and standardized element chamfering diameter; The utility model is simple in structure, and is convenient, fast during actual measurement, accurate, and the width of chamfering or outer chamfering in this instrument is used to control is applicable to the measurement to the end face chamfering diameter of the tube shape component of production in enormous quantities.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
As shown in Figure 1, chamfering measuring apparatus of diameter of the present utility model, it comprises base 1, and base 1 is provided with pillar 2, and pillar 2 is threaded with base 1, and pillar 2 upper ends are provided with measurement mechanism.Measurement mechanism comprises the reference column 3 of fixedlying connected with pillar 2, reference column 3 is consistent with pillar 2 center lines, reference column 3 tops are cylindrical, the bottom is conical, the circular conical surface diameter of reference column 3 bottoms is greater than the face of cylinder, top diameter, on reference column 3 lower cone faces, evenly be provided with two through holes that are communicated with the bottom surface 4, through hole 4 centers are symmetrical arranged, through hole 4 center lines are parallel with the center line of pillar 2, be equiped with the sounding rod 6 of dial gauge 5 in the through hole 4, sounding rod 6 is connected by screw 8 roof pressures that are located at reference column 3 lower side with through hole 4, the measuring head 7 of dial gauge 5 protrudes from the circular conical surface of reference column 3, and screw 8 can be regulated the height that measuring head 7 protrudes.
During use, use a standardized element that dial gauge 5 is adjusted benchmark in advance, the reference column 3 column part external diameters of setting and workpiece for measurement 9 internal diameter clearance fit.The end face of workpiece for measurement 9 chamferings is enclosed within on the reference column 3 down, the interior chamfering round edge of workpiece for measurement 9 contacts with the circular conical surface of reference column 3, the end face of workpiece for measurement 9 contacts with the measuring head 7 of two dial gauges 5, when the chamfering vary in diameter, must cause that workpiece for measurement 9 is placed on the height change on reference column 3 conical surfaces, thereby cause the variation of dial gauge 5 pointers.The measuring principle of this measuring instrument is: the variation delta that adopts dial gauge 5 pointers
TableWith diameter variation amount Δ
DirectlyFollowing relation is arranged:
(β is the angle of reference column 3 circular conical surfaces and its xsect)
The workpiece for measurement 9 consistent with the standardized element chamfering, the pointer of its dial gauge 5 be the benchmark for mixing up still, if the pointer amount of the changing Δ of dial gauge 5
Table, that according to top computing formula, can measure the variation delta between its chamfering diameter and the standardized element chamfering diameter with regard to the chamfering that this workpiece for measurement 9 the is described requirement that falls short of specifications
Directly, so easily, the very accurate deviation that detects chamfering diameter and standardized element chamfering diameter.