SU952538A1 - Apparatus for centreless machining - Google Patents

Description

The invention relates to a machine tool industry, in particular to centerless, gray grinding machines up to the stop.

Devices are known in which grinding to the stop is carried out by the periphery of the grinding wheel with the translational-rotational movement of one part along a fixed knife from the action of a drive wheel having the shape of a single-cavity hyperboloid.

However, the known devices have a relatively low productivity, since only one part can be processed at the same time and due to the loss of time for loading and unloading the part.

The purpose of the invention is to increase productivity by simultaneously processing several parts until it stops.

The goal is achieved by grinding the wheel and the sets of knives and driving wheels having the shape of a cylinder are located on the rotor, the axis of rotation of which is parallel to the axis of the spindle of the grinding wheel and is sufficiently far from it. detail tabs

knives with driving wheels outside the grinding wheel area and ensuring the creation of a component cutting force that presses the part against the stop, and at the end of grinding the component cutting force that moves the part away from the stop.

FIG. 1 shows the device,. plan view; in fig. 2 - view A on

10 of FIG. one..

The grinding wheel 1 with the face working surface with a vertical axis of rotation is located above several sets of knives 2 and leading

15 circles 3 mounted on the rotor 4 (figure 2). On knives 2 and driving wheels 3, sandable children 5 may be placed. Driving wheels 3 have a cylindrical shape. Rotation axis

20 Oy rotor parallel to the axis of rotation

1 and

 grinding wheel spindle

It is separated from it at some distance. This distance is necessary for the composition of the component cutting forces

25 which can press the parts 5 against the abutment when grinding and move them away after finishing the grinding. The knives 2 and driving wheels 3 are mounted on pOTotse 4 so that the axes of the parts 5 may lie in the same plane, perpendicular to the axis of the grinding wheel 1. At the same time, parts 5 may be exposed to the lower end of the grinding wheel 1. Machine loading at that moment when one of the sets of the knife 2 and the driving circle 3 takes the position shown in FIG. 1 below.

The operation of the device is as follows.

The grinding wheel 1, the driving wheels 3 and the rotor 4 (figure 1) rotate in the directions indicated by the arrows. When one of the sets of the knife 2 and the driving wheel 3 comes to the position shown in FIG. 1 below, part 5 is laid on the knife 2 and the drive wheel 3. Part 5 begins to rotate around its axis under the influence of the drive wheel 3. As the rotor 4 rotates counterclockwise, part 5 gradually begins to go under the end of the grinding wheel 1. Grinding begins. Due to the offset position of the axes of the grinding wheel 1 and the rotor 4, a component of the cutting force is produced, which presses the workpiece 5 against the stop. Grinding occurs until the part 5 comes to the position shown in FIG. 1 above. At this point, the grinding is completed.

With further rotation of the rotor 4, the nursing process occurs and the cutting force that arises in this case gradually begins to move part 5 away from the stop and at the end of it stops from the knife and driving circle. There is unloading. Offset position of rotor axes

4 and the grinding wheel 1 provides safe conditions for manual loading of the device, since the loading area is removed from the grinding wheel.

The device provides high performance due to the simultaneous grinding of several parts and overlapping the auxiliary time with machine time.

Claims (1)

Invention Formula A device for centerless machining against the stop using a grinding wheel of parts mounted on a knife and set in rotation with a driving circle, characterized in that, in order to increase productivity by simultaneously machining several parts against the stop, the spindle of the grinding wheel with the face working surface is installed vertically , and the driving wheels and knives are mounted on the rotor inserted into the device, the axis of rotation of the rotor and the axis of rotation of the grinding wheel spindle parallel and spaced from each other ha at a distance from the selected conditions the possibility of loading zone is a grinding wheel. Sources of information taken into account in the examination 1, Slonimsky V, I, Theory and practice of centerless grinding, M.-L., Mashgiz, 1952, p., 247-248, fig, 139 (a).