RU94016164A - Tooth fixing assembly - Google Patents

Abstract

FIELD: tooth fixing. SUBSTANCE: tooth fixing assemblies, having a tooth secured in a holder by means of a fixing device, are usually used for quick replacement of the tooth, which is a quick-wearing component. The fixing device is featured by simplicity and easiness of installation thereby providing for a considerable fixing force acting on the dowel for counteraction to any attempt of the dowel to come out of the assembly in service. In the offered construction provision is made for a lock in the form of a flat plate spring, positioned in the hole for the lock passing across the dowel. After installation of the dowel the plate spring is subjected to action of force making it sag. The magnitude of the force required for sagging of the plate spring is the same as that of the force restraining the dowel in the preset position after the assembly is assembled. The dowel has a central groove, whose dimension is sufficient to receive the part of the plate spring engageable with it, when the dowel is in its preset position after the assembly is assembled. When the plate spring enters the central groove, sagging of the plate spring decreases, which results in an increase of the plate spring service life. When the hole for the lock is made across the hole for the dowel, the strength of the front part remains uncharged. EFFECT: improved design.

Claims (1)

It is rational if there is a fixing device that is simple and easy to install and at the same time provides a significant fixing force acting on the pin to counteract any attempt by the pin to leave the unit during its operation. The proposed design provides a latch in the form of a generally flat leaf spring, which is located in the hole for the latch extending across the pin. After installing the pin on the leaf spring, a force acts to cause it to bend. The force required to deflect the leaf spring is the same in magnitude as the effective force holding the pin in its predetermined position after assembly of the assembly. A central groove is made on the pin, the size of which is sufficient to include the portion of the leaf spring in contact with it when the pin is in its predetermined position after assembly of the assembly. When the leaf spring enters the central groove, the amount of deflection of the leaf spring decreases, which leads to an increase in the service life of the leaf spring. When making holes for the clamp across the hole for the pin, the strength of the front part is maintained.