SU1502180A1 - Centrifugal casting machine with vertical axis of rotation - Google Patents

Abstract

The invention relates to foundry, in particular, to equipment for centrifugal casting, and can be used in the manufacture of parts, such as cast iron sprockets. The goal is to increase the productivity, reliability and durability of the machine, expand its operational capabilities and protect the spindle bearing supports from overheating and failure. The design of the machine provides for the cooling of the bearings, which prevents the burning of grease in the bearing assemblies, the failure of bearings. The invention allows to increase the reliability of the machine and increase its productivity. 1 il.

Description

bearing supports, which prevents the release of grease in the bearing assemblies, failure of bearings.

The invention allows to increase the reliability of the machine and increase its productivity. 1 il.

The invention relates to foundry, in particular, to equipment for centrifugal casting, and can be used in the manufacture of parts, such as high-strength cast iron sprockets for open chain gears in a wide range of diameters.

The aim of the invention is to improve the performance, reliability and durability of the machine, expand its operational capabilities and prevent the spindle bearing supports from overheating and failing.

The drawing shows a centrifugal casting machine with a vertical axis of rotation,

The centrifugal casting machine consists of a housing 1 fixed to the support frame 2, a driving spindle 3 mounted in the bearings, a rotary table 4, a replaceable mold 5, centered and fixed with quick-release fasteners on the turntable, and a drive mechanism 6 for rotating the vertical spindle.

The spindle bearings are fitted with bearings that are not adjustable during operation: on the upper bearing, which receives significant radial forces, there are used twin radial roller bearings 7 with short cylindrical rollers and single-row thrust ball bearing 8, and on the lower bearing, which receives smaller radial forces, radial roller bearing 9 with short cylindrical rollers and thrust single shaft ball bearing 10 are applied. Axial forces on the spindle are perceived by the thrust ball bearing 8 of the top bearing ry The drive spindle bearing heads are structurally solved taking into account the forces applied to it.

To prevent the spindle bearing bearings from burning out lubrication and breaking the vertical drive spindle is hollow. At the lower end of the hollow vertical spindle 3 is installed extension cable, consisting

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From the outer sleeve 11, entering into the collector 12, and the pipe 13, the cooling liquid entering the cavity of the spindle through the radial holes 14 located at the upper end of the pipe in the zone of high temperatures. The pipe 13 is centered in the cavity of the spindle by means of the conical-cylindrical shank of the end plug 15 of the spindle. On the turntable, the disk 16 is coaxially fixed, which is included in the technological opening of the bottom of the interchangeable mold 5,

In order to ensure that the spindle is injected into the cavity and the liquid is withdrawn, the machine’s bearings are cooled, the manifold 12 is made up of an upper case 17 and a lower inlet 18 of the bottom box, which are movable flange bushings. The collector is centered on the outer sleeve 11 of the extension and is fixed against turning and vertical movement by a stationary discharge pipe 19 connected to the body of the collector 12.

The drive of the rotation mechanism 6 is made in the form of a casing-protected V-belt 20 with two drive pulleys. One of the drive pulleys is located on a motor support (not shown), and the other is mounted on the lower spindle shank via keyed joints 21.

Centrifugal casting machine works in the following way.

An assembled interchangeable mold 5 is installed on the turntable 4 of the maschion. spindle 3 through supplying bush 18, pipe 13 and bore 14, the liquid cools the bearing supports and through the udpinin 11, the collector 12 is discharged through the exhaust

pipe 19. Turns on the drive mechanism 6 rotation.

The present invention allows to increase the productivity, reliability and durability of the machine.

Claims (2)

1. A centrifugal casting machine with a vertical axis of rotation, comprising a housing mounted on a support frame, a drive hollow spindle mounted in two bearing supports mounted in the housing, a rotary table and a rotation drive, which is designed to increase reliability and durability of the car. expanding its operational capabilities, it is equipped with an extension cord attached to the spindle end, a manifold in which the extension cord is placed, a pipe installed inside the hollow spindle with a gap and having radial holes in the upper part, and a mechanical stopper with a shank located at the top of the pipe, while the bearing supports consist of radial roller bearings. 2. The machine according to claim 1, characterized by the fact that the collector consists of a housing with upper and lower bulkheads in which the seal is located, and its outlet nozzle is rigidly fixed to the frame.