SU476091A1 - Spherical Surface Treatment Device - Google Patents

Description

one

The invention is used in the machining of parts bounded by a spherical surface.

The known devices for treating spherical surfaces, the tool holder of which is mounted on a turntable, put into operation by the machine tool slide, have little technological capabilities and are not convenient enough when setting up.

The proposed device allows the processing of a convex and concave spherical surface, the center of which may coincide and not coincide with the axis of the workpiece and is easily reconfigured from one type of parts to another and from one sphere size to another.

This is achieved by the fact that the proposed device is equipped with an adapter plate mounted, for example, with a screw and a nut on the machine guides, and the rotary table drive is designed as a splined gear with a sliding screw inserted into engagement with a worm wheel, on which A turntable with an instrumental holder is mounted and connected with a nut to install the adapter plate.

For the purpose of ease of maintenance on the machine, the device is installed on the rear vertical guides, which are additionally equipped with the machine bed, the tool holder is located on the turntable with the possibility of installation movement, for example, by means of a screw connection, and is crescent-shaped.

FIG. 1 shows schematically the described device, a general view; in fig. 2 - the same view from the operator; in fig. 3 is a section along A-A in FIG. 2. A device for machining spherical surfaces consists of a vertical frame 1 having a tuning scale in the upper and lower calculus from the axis of the centers for adjusting to the processing of eccentric spheres relative to the axis of the workpiece.

The bed is located vertically on the rear rail of the machine, and along its guide the slide 2 moves vertically and has a scale for setting the turntable of the rotary table in

upper and lower calculus. The caliper is set in motion by turning the knob of the screw 3 of the caliper on which the drive nut 4 moves. On the nut the worm gear 5 rotates

bolted through an intermediate ring 6 to a rotary table 7, having a guide and a scale in the upper and lower calculus from the center axis of the machine. To adjust to a given processing radius on the scale of the turntable, the slide 9 moves from the handle with the screw 8 along the guide table. For handling convex spheres, the slide rises from the zero position and for the concave spheres descend. On the sled there is a folding tool holder 10, which has a Sickle shape for the possibility of machining the end spheres. The cutter II is pressed with a bolt in the tool holder window in a plane that is strictly along the axis of the centers of the machine, which makes it possible to avoid the time spent installing the tool on this axis.

In addition, the device has a lever 12, which puts the device into operation. On the lever there is a fork 13, with the help of which the intermediate gear 15 is lowered along the slit roller 14 and the bristle 16 is engaged with the toothed rack 17 mounted on the machine’s cross support. The gear 16, mounted on the slit shaft 18, transmits the rotation to the sliding screw 19 located between the cheeks of the caliper 2 and working in tandem with the worm gear 5.

When the cross-feed of the gear box is switched on, the rack 17 fixed to the transverse caliper drives the intermediate gear 15, which rotates the gear 16 mounted on the spline shaft 18. The latter turns the worm to 19, which in turn rotates the worm gear 5. Rotating around its axis-nut 4, the worm gear 5 drives the rotary table 7, which rotates the slide 9. The tool holder 10 with the cutter 11 is attached to the slide by reciprocating circular movements to process the sphere.

In order to adjust for roughing or finishing, the sphere of the slide 9 is raised by rotating the screw 8 at a distance that allows the folding of the tool holder 10 to be turned and bolted to the slide 9.

After securing the cutter 11 in the tool holder 10, the slide, when the part rotates, is lowered by the screw of the screw 8 for the required distance, and the cross feed of the slide after each pass switches from forward to reverse.

To adjust the device for finishing the eccentric convex spherical surface of the slide 9, they raise from the zero position on the scale of the rotary table 7 to a predetermined radius, and slide the caliper 2 down with the screw 3 of the caliper from the zero position of the stanpi 1 scale to the size obtained by subtracting half the largest the diameter of the sphere.

To set up the device for processing the eccentric concave spherical surface of the slide 9, lower it to a predetermined radius, and raise the caliper 2 by a size equal to the sum of the specified radius with half the smallest sphere diameter.

For processing the annular (mixed with the center axis of the machine centers) concave sphere at the end, the slide 9 is lowered by a given radius, and the support 2 is raised half of the average diameter of the circular depression and the turntable 7 is rotated at a 90 ° angle.

To process the annular convex sphere at the end of the workpiece, the ram lifts a given radius of the specified radius and the caliper half the average diameter of the annular convex sphere.

At the end of the operation of the device, the lever 12 is returned to its original position to break the chain of the device with the cross feed of the caliper, after which, unscrewing the mounting bolts of the tool holder with the vertical slide, retract it to the side.

Subject invention

Claims (3)

1. A device for treating spherical surfaces, the tool holder of which is installed on a rotary table, put into operation by the machine slide, characterized in that, in order to expand technological capabilities and ease of adjustment, it is equipped with a transition plate, installed, for example, with a screw and nuts on the machine guides, and the rotary table drive is made in the form of a splined gear with a sliding screw, which is engaged with a worm wheel, on which a rotary table with a tool holder is mounted, and which is connected to the nut for setting the adapter plate, and the device provided with guides for placing it in a vertical position on the machine. 2. The device according to claim 1, characterized in that, for the purpose of ease of maintenance on the machine, it is installed on the rear vertical guides with which the machine bed is additionally equipped. 3. The device according to claim 1, characterized in that the tool holder is mounted on a rotating table with the possibility of adjusting movement, for example, by means of a screw connection, and is made crescent. : Fig j