A torque device magnetic steel assembly device and method

Abstract

The invention belongs to a torquer magnetic steel assembly device and method. Firstly, an excitation ring is placed in a base, after the lower end face of magnetic steel is coated with a binder, the magnetic steel is placed in an upper cover, the upper cover is mounted on the base, a protruding locating column of the upper cover cooperates with the inner wall of the base, and accurate locating of the magnetic steel in the excitation ring is ensured; and the upper cover and the base are in fastened connection through fastening screws, then a torque screwdriver is adopted for screwing down a force application screw, when the tightening torque exceeds a set value, pressure is not applied to the magnetic steel any more, and it is ensured that the stress of the magnetic steel is consistent. The torquer magnetic steel assembly device and method have the beneficial effects that the pressing force of the magnetic steel can be consistent, the binding quality of the magnetic steel and the binding quality of the excitation ring are consistent, and therefore the assembly quality is improved; the magnetic steel fall-off proportion of an existing assembly method is reduced, the percent of pass of parts is improved, and the production cost is reduced; and the inner side wall of the excitation ring is not damaged under the condition of ensuring magnetic steel accurate locating, and the product surface quality is improved.

Description

technical field [0001] The invention belongs to a magnetic steel assembly device and method, in particular to a quartz flexible accelerometer torque device magnetic steel assembly device and method. Background technique [0002] The quartz flexible accelerometer (hereinafter referred to as the accelerometer) is composed of a meter head and a servo circuit. The meter head is composed of a watch core, an isolation ring and a casing, and the watch core is composed of an upper torque device, a pendulum assembly, a lower torque device and a belly belt. composition. Both the upper torquer and the lower torquer include an excitation ring, a magnet, a compensation ring and a magnetic pole piece. In order to assemble the magnet to the excitation ring, the lower end of the magnet needs to be coated with adhesive, and the magnet and the excitation ring are connected into a After being integrated, pressure is applied and high temperature curing. [0003] At present, when the accelerom...

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Problems solved by technology

[0004] The above-mentioned watch movement assembly method has the following defects: when assembling the magnetic steel in the existing method, the pressing force for pressing the magnetic steel is manually applied, and the pressing force cannot be accurately controlled. If it is too large or too small, the magnetic steel will fall off; Moreover, the pressing force is an empirical value, and the magnetic steel assembled with this empirical force value currently has a certain percentage of shedding; in order to realize the accurate positioning of the magnetic steel in the excitation ring, the existing technology uses the guide cylinder of the upper cover and the excitation ring The inner wall is matched, which will cause the upper cover guide cylinder to scratch the inner wall of the excitation ring

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