Way to build connections details

 

(57) Abstract:

Usage: in assembling upon receipt of the connection parts guaranteed to fit. The inventive between the mating surfaces of the connected parts form an Assembly gap by excitation in one of the parts alternating magnetic field fluctuations, deforming it in the radial direction. Then on the second part affected by varying magnetic field to ensure its axial movement to the coupling parts. When this magnetic field change on the periodic law, with a frequency equal to the frequency of oscillations of the first part. Change the phase angle of oscillation of magnetic fields acting on the workpiece within 360o. 2 C.p. f-crystals, 1 Il.

The invention relates to the field of engineering, namely: to the Assembly of parts with guaranteed tightness.

Known way to build connection details type shaft sleeve with guaranteed tightness, consisting in education between the mating surfaces of the connected parts of the Assembly gap by excitation with an alternating magnetic field in one of the components of the fluctuations to ensure deformation her in the radial direction (in premennych in time to 1/4 of the period of oscillations of the first part.

The disadvantage of this method is that the phase of oscillations of the first part does not coincide with the phase of the RF pulse magnetic field and the phase offset of the second part does not coincide with the phase of the excitatory its magnetic field pulses. Thus, the phase shift between the deformation of one part and moving the other can be anything. Moreover, this shift depends on many factors, such as size, configuration and material details characteristics of the magnetic field, the design and arrangement of the inductor, etc.

Technical problem which the claimed invention is directed, is to increase the efficiency of the Assembly.

To solve the problem in a known way to build connection details type shaft sleeve with guaranteed tightness, consisting in education between the mating surfaces of the connected parts of the Assembly gap by excitation in one of the parts alternating magnetic field fluctuations, deforming it in the radial direction, and relative axial movement of the parts to mate by acting on the second part by an alternating magnetic field, the magnetic field change on the periodic law, with a frequency equal to Castoria details within 360o.

Another difference is that they measure the force of interaction between the parts and change the phase angle of oscillation of magnetic field until it reaches a strength of interaction between the minimum value.

Another difference is that measure the phase between current and voltage of the excitation source of the magnetic field of the second part and change the phase angle of oscillation of magnetic fields up until the phase between current and voltage reaches the minimum value.

The drawing shows a diagram of a device implementing this method. Apparatus for assembling parts such as hollow shaft 1 and the sleeve 2 includes a source of an alternating magnetic field to the shaft 3 and the sleeve 4, the amplifiers 5 and 6, the phase shifter 7, the AC voltage generator 8 and the strength meter 9.

The method is implemented as follows: the shaft 1 and sleeve 2 are in contact, are sources of AC magnetic fields 3 and 4, which are connected respectively to the amplifiers 5 and 6 to the input of one of the amplifiers is connected to the phase shifter 7, the inputs of the phase shifter 7 and the amplifier 5 is connected to the generator output. Include a generator and a set e is Oh amplifiers 5 and 6, accordingly, the phase angle of oscillation of magnetic fields from sources 3 and 4. The change of phase angle to produce until the force of interaction between the joined parts will not become the minimum, or until such time as the phase shift of the current and voltage of the AC magnetic field 3 of the shaft 1 reaches the minimum value.

Changing the strength of the axial displacement of the parts relative to each other can be carried out in a known load devices. The strength of interaction between the parts will be minimum when the maximum technological gap between the parts, i.e. the feed shaft 1 is in the moment of greatest expansion sleeve 2.

In turn, the phase shift of the current and voltage of the AC magnetic field 3 will be minimum when the minimum strength of the interaction details.

1. Way to build connection details type shaft sleeve with guaranteed tightness, consisting in education between the mating surfaces of the connected parts of the Assembly gap by excitation in one of the parts alternating magnetic field fluctuations, deforming it in the radial direction, and relative axial movement deitie fields change according to the periodic law with frequency, equal to the frequency of oscillations of the first part, however change the phase angle of oscillation of magnetic fields acting on the workpiece within 360o.

2. The method according to p. 1, characterized in that measure the force of interaction between the parts and change the phase angle of oscillation of magnetic field until it reaches a strength of interaction between the minimum value.

3. The method according to p. 1, characterized in that the measured phase between current and voltage of the excitation source of the magnetic field of the second part and change the phase angle of oscillation of magnetic fields up until the phase between current and voltage reaches the minimum value.

 

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FIELD: plastic working of metals.

SUBSTANCE: method comprises steps of deforming sheet blank by drawing it through closed working gage of draw plate; using linear electric motor at making shapes. In order to draw blank through closed working gage of draw plate at smoothly deforming it, pulling effort uniformly distributed along the whole length of deformation zone is provided. Said pulling effort is created due to interaction of traveling magnetic field induced in winding of stator of linear electric motor with eddy currents induced in blank for moving blank according to traveling magnetic field. Apparatus for making shapes of sheet blank includes draw plate with closed working gage. Apparatus for making shapes of electrically conducting material includes linear electric motor supporting draw plate with closed working gage; the last is fixed to said motor. It is possible to use as linear electric motor single-side linear electric motor, double-side linear electric motor or cylindrical linear electric motor.

EFFECT: enlarged manufacturing possibilities, enhanced quality of shapes.

5 cl, 6 dwg

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