SU1307218A1 - Method of checking deviations of piston ring shape in free state - Google Patents

Abstract

The invention relates to mechanical engineering and can be used to control deviations of the shape of piston rings in a free state, both during processing and finally processed. The purpose of the invention is to improve the accuracy of controlling piston rings in a free state and ensuring that the rings are inspected prior to manufacturing the lock. The piston ring 1 is based on the turntable 3 and at the same time combines the center of rotation of the turntable 3 with the center of a circle passing through three points on the outer surface of ring 1. The radius of the circle is defined as the distance from the center of rotation to the point diametrically opposite to the center of the cut out in the manufacture of the castle site. Next, ring 1 is fixed and. measure the deviations of the shape of the piston ring. 1 il. & (L from about 00

Description

113

The invention relates to mechanical engineering, in particular, to the engineering industry, and can be used to control deviations of the shape of piston rings in a free state, both during processing and finally processed.

The aim of the invention is to improve the accuracy of controlling deviations of the shape of a piston ring in a free state and to ensure control of deviations of the form of a ring before making a lock by basing the ring when the center of rotation of the turntable is aligned with the center of a circle passing through three points on the outer surface of the ring, one of which is diametrically opposed to the middle of the section cut out in the manufacture of the castle.

The drawing shows a device for implementing the proposed method

In a free state, the controlled piston ring 1 is mounted on the base 2 of the turntable 3 between three pins 4, which are evenly spaced around the circumference, equidistant from the center and can be displaced a certain distance with a micrometer screw (not shown in the drawing). 4 is reduced toward the center until the surface of the test ring 1 is in contact, after which the ring is fixed on the base 2 so as to ensure the possibility of controlling the deviation of the shape of the outer surface by rolling indicator 5. When the outer surface of the piston ring I is rolled in the free state, the shape of the ring is determined as the geometrical place

Compiled by I.Efimov, Editor T.Parfenova Tehred A. Kravchuk Proofreader S.Shekmar

1618/37

Circulation 678 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

82

the positions of the ends of the current radius vector with the origin in the center 0 or as the alignment of the nominal radius, which is taken as the actual distance r0 ,. Point O is diametrically opposed to the middle of the section carved into the castle.

Distance 002 is determined as follows.

The angular and radial location of the ends of the lock is determined by the turn table limb and the lock in zone. The nodal position of the point O (back) is determined by calculation as opposite to the middle of the ring lock. The radial position of the point O (of the back) and, accordingly, the distance OOj (the indicator is pre-adjusted on the reference disk) are determined by rolling the zone located opposite the lock.

Claims (1)

Invention Formula A method for controlling deviations of the shape of a piston ring in a free state, including basing the ring on the turntable, securing and measuring deviations of the form, characterized in that, in order to increase the accuracy of control and ensure control of deviations of the ring shape before the lock is manufactured, the basing of the ring is combined with the center of rotation of the rotary table of the center of a circle passing through three points of the outer surface of the ring, one of which is diametrically opposite to the middle of the cutting and portion.