SU549323A1 - Piston ring processing device - Google Patents

Description

(54) DEVICE FOR TREATING PISTON RINGS

The invention relates to the field of machine tools and can be used for the manufacture of piston rings of internal combustion engines.

Devices are known for treating piston rings in a package by grinding or turning the entire package. They contain a smooth mandrel, which dial rings. The rings mounted on the mandrel are clamped with the end faces with clamping washers.

However, it is not possible to process barrel-shaped piston rings in a package.

Also known are devices for treating the outer surfaces of piston rings, containing an adjusting device with pressure washers for fastening the rings, a grinding wheel on a rotating head with a roller, which is pressed by a spring to a cam in the form of a cam and a rotary mechanism, an adjusting device and cam.

The purpose of the invention is to provide the possibility of processing piston rings with barrel-shaped generatrix.

This is achieved by the fact that the device is equipped with a slit shaft and the splined mandrels associated with it, carrying the machined rings, the pressure washers are rotatably mounted on the shaft and are connected to the carrier introduced into the device.

the copier is rigidly connected to the slit shaft, and the roller is made with an annular groove in which the carrier is placed.

FIG. 1 shows the proposed device, the cut; in fig. 2 is a side view (view A); in fig. 3 shows a kinematic scheme for driving the rotation of the clamping washers.

The device consists of a splined shaft. on which two clamping washers 2 are installed along a sliding fit. The piston rings 4 are mounted between the filaments on the mandrels 5 connected to the shaft / by means of splines. The mandrels with piston rings are pressed on both sides by washers 5. With one of

the guides are connected by the carrier 6, which enters with its peripheral part into the groove of the conical cam 7. On the shaft 1, a cluster 8 is fixed, which runs around the conical cam 7. The carrier, pressure plates, mandrels

the rings and washers are held on the shaft with a nut 9.

FIG. 2 shows that the slit shaft is pressed through the copier 5 to the cam 7 by means of a spring 10 and a lever //. Rings with

the mandrels are pressed against the splined shaft from the side of the grinding wheel with 12 rollers with the help of levers 14 and the spring 15. The clamping washers 2 receive rotation from a single drive through shchestreni 16 and 17.

The device works as follows. In order to obtain a barrel-shaped pierced forming rings of each package ring, two movements are reported: rotation around its own axis with an operating speed "i" and swinging the smallpox of rotation of the ring relative to the axis of the shaft /. The receipt of these two movements is ensured by the fact that the clamping washers 2, between which the mandrels with the rings 4 are located, impart a rotation speed of 2. different from the speed of rotation of the shaft / and mandrels with rings. As a result of machining the rocking and simultaneously rotating ring, its forming gets a barrel-shaped profile. The magnitude of the barrel-shaped profile is provided with the slope of the beveled part of the clamping washers 2. Compensation for the change in the distance between the peripheral part of the rings and the axis of the grinding wheel 12 that occurs when changing the angle of the rings relative to the shaft, /, provides the system: copier 8 - -. ; Cam 7 - drove about. When the washers 2 rotate, 15dil rigidly connected with them 6 moves the conical cam 7 along the axis so that each tilt angle of the rings corresponds to the strictly defined position of this cam. At the same time, the copier 8 rolling around on it displaces the shaft axis / by the amount compensating the change

i 7

Claims (1)

Rig. 1 is the distance between the rings and the grinding wheel. The ovality of the rings is obtained by adapting a copy of the form that provides the required oval size. The application of the proposed device makes it possible to reduce the complexity of the processing of piston rings with barrel-shaped. The invention of the device for processing piston rings, including clamping washers connected by their rotation, between which machined rings, rotating copier are installed, by means of a roller resiliently pressing the machined rings to the tool, characterized in that in order to ensure the possibility of machining piston rings with barrel-shaped generator, it is equipped with a splined shaft and associated with it annular mandrels carrying machined rings, pressure washers are mounted on the shaft with the possibility of tim and bonded to the carrier introduced into the apparatus, the cam is rigidly associated with a splined shaft, and the roller is formed with an annular groove in which the carrier taken. iilii nn -jl i I III I ISh jAlj-LlJ4 1 ////// 7 // T -imf