SU913024A1 - Method of checking non-rigid articles - Google Patents

Description

The invention relates to measuring equipment, in particular to the control of non-rigid parts in internal and external diameters.

A known method of controlling parts, which consists in the fact that a controlled product under a certain pressure or under its own weight is pushed through the calibo and, depending on the passage or failure to pass through it, falls into one group or another in the control sorting machine [1].

However, this method is inefficient and causes the presence of sophisticated electronic devices for its implementation.

Closest to the invention is a method of controlling the internal diameter of non-rigid parts, for example compression springs, which consist in that the test piece is mated with a caliber that has a lead-in cone, and determine its suitability. The definition of validity is that if the internal diameter does not comply with the allowable part, it hangs on the caliber and a signal is sent to the sorting device for rejection [2].

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15

The disadvantage of this method is low productivity due to the need to determine the position of the part on the caliber.

The purpose of the invention is to increase the productivity of control.

This goal is achieved by the fact that the part is oriented in the satellite, the pairing of the controlled part in the satellite with a caliber is produced under the action of an effort determined by the formula

k-0 ·

to tr 4-cd c _t p '- kdsk. ·

(one)

where P is the force mate;

k - coefficient changing

ranging from two to three .; PP O ' ^{is the} weight of the controlled part;

¢ (, - half of the angle of the feed cone caliber;

K-φφ is the coefficient of friction, and the suitability of the part is determined by the presence on the caliber taken out of the satellite.

Forced conjugation of a controlled part and a caliber causes deformation in the median plane of those non-rigid parts in which

30 inside diameter less than diameter

3

913024

four

caliber and outer diameter greater than the diameter of the caliber. For parts, the inner diameter of which is larger than the diameter of the caliber and the outer diameter is smaller than the diameter of the caliber, deformation in the diametral plane is not observed.

FIG. 1 shows the control circuit of the internal diameter at the time of conjugation of the test piece with a caliber; in fig. 2 is a scheme for determining the validity and sorting of a controlled part by the internal diameter; in fig. 3 is a diagram of the control of the outer diameter at the time of conjugation of the test piece with a caliber; in fig. 4 is a scheme for determining the validity and sorting of the controlled part by the outer diameter.

A device that implements the described method contains satellite 1 and caliber 2.

The method is as follows.

Together with the satellite 1, the monitored part 3 is installed coaxially with the caliber 2 and the caliber 2 is mated with the component 3 with a minimum force P defined by the formula (1). Parts with an internal diameter smaller than the diameter of a caliber, receive elastic deformation in the diametral plane and are removed with a caliber from the satellite socket. Similarly, there is control and sorting in the control of outer diameters.

The advantage of this method is to increase the productivity of control by reducing the time for intermediate operations.

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and " 7 to Y Have % th Have

Figg

p = K-oi in simplifying the design of devices, - implementing this method.

Claims (1)

Claim . The control method of non-rigid parts, such as springs, which consists in mating a test piece with a caliber that has a lead-in cone, and determines its suitability, characterized in that, in order to improve the performance of the control, the piece is oriented in the satellite, the pairing of the test piece in the satellite with caliber produced by the force determined by the formula. kt-p— bd <agde R — force of conjugation; k is a coefficient varying from two to three; O is the weight of the controlled part; <1 - half angle of the lead cone caliber; _KT is the coefficient of friction, and the suitability of a part is determined by its presence on a caliber taken out of the satellite.