SU588063A1 - Method and apparatus for machining spherical surfaces - Google Patents

Description

one

The invention can be used in the treatment of external and internal spherical surfaces of rotating blanks, mainly large radii, for example more than .100 mm, in mechanical engineering -.

There are known methods for treating spherical surfaces with a cutter, with which the grab rotates, and the cutter is rotated around an axis, perpendicular: cool 1pn oyui (Rotation billet.

There are known devices for machining spherical surfaces, including a toolholder with the possibility of turning the tool holder 1.

A disadvantage of the known methods and devices is the limited range of radii of the spherical surface being processed over the top.

In order to expand the Obra radius range (internal and external spherical surfaces, in the described method, the axis of rotation of the tool is positioned in the same plane with the axis of rotation of the workpiece at an angle to the latter so that it can be rotated around the pole of the Sphere to be processed.

In the device being cooled, the tool holder is made in the form of a tool rod located in the axis of rotation of the workpiece of the boat with an angle thereto, which holds the tool cut back with an offset from the axis of the pinch axis located in the plane passing through the pole of the sphere normally to the axis of the pinch spindle; the ability to rotate around its axis and around the field | Sa treated spherical surface.

FIG. 1 shows the processing scheme of the external and internal spherical surface; in fig. 2 shows the proposed device for the implementation of the method, a general view; in fig. 3 shows section A-A in FIG. 2

The tool 1 is rotated around an axis 2 located in the plane of the axis of rotation 3

billet 4 with its intersection at a point that is the center of the spherical surface being machined.

When machining a spherical surface, the axis of rotation 2 is placed under

angle (+ a) to the axis 3 of rotation of the workpiece 4 and move the tool tip along a radius equal to the tool reach (a). As a result of the combination of movements of the rotating workpiece and the rotation of the tool

get a spherical surface. In order to obtain an internal spherical surface, the axis of rotation 2 is turned around the lolius 1sphere so that the angle between the axis of rotation 3 of the workpiece and the axis 2 of rotation of the cutting

the tool angle is (a).

The device includes a transitional plate 5, fixed on the cross slide soup SupiTTa, placed on it and instrumental spire 6, carrying on. cutting tool for its head, connected by its shank to rotational drive 7 and placed in housing 8, identified by means of finger 9 in transition plate 5.

The unit operates as follows.

To crawl the outer spherical surface on the workpiece, the body 8, centered by the finger 9 on the adapter plate 5, is turned so that the angle between the axis of the tool pin 6 and the axis of rotation of the workpiece is fixed (+ a). By rotating the screw, Kavala 10 manually using the flywheel and turns the tool pitch-6 for the worm gear 12 fixed on its shank and meshes with the card-worm and GO, while the tool tip is rotated at a radius equal to the tool's reach, and the outer spherical surface is machined on the rotator with the workpiece. To obtain an internal spherical surface, the body 8 is loosened and turned around the pole of the sphere so that the angle between the axis of the tool spindle 6 and the axis of rotation of the workpiece is an angle (-ax), and is fixed again.

Claims (2)

1. Method. The machining of spherical surfaces with a cutter, in which the workpiece is rotated and the cutter is rotated, characterized in that, in order to expand the range of the radii of the inner and outer surfaces being machined (Spherical surfaces, the axis of rotation of the cutter is placed in one planes with the axis. of the workpiece at an angle to the latter with the possibility of turning around the pole about: the sphere being worked. 2. A device for carrying out the method according to claim 1, inclusive; a tool holder that is installed with the possibility of turning, characterized in that the tool holder is made in the form of a workpiece axis located in the plane of the axis of rotation at an angle to it; the cutter is installed with an offset relative to the axis of the spindle with the top located in the plane passing through the pole of the sphere. Normally to the axis of the spindle, and the spindle is set with rotation around its axis and the pole of the spherical surface being machined. Sources of information taken into account in the examination I. Copyright certificate № 386712, cl. B 23B 5/40, 1973. i (eHTnp c eflt /  S i / mpef / fffi / Cfffi f -Ti IT Vr r iujt J-