SU916252A1 - Apparatus for precision working of part flat surface - Google Patents

Description

The invention relates to machine tools.

A device is known for precision machining of flat surfaces of parts, comprising a faceplate for securing parts, a table and a rotating abrasive tool [1].

However, such a device does not allow to obtain the necessary parallelism of the machined flat surfaces.

The purpose of the invention is to ensure parallelism of the ends of the parts by combining the installation bases in height in one plane.

This goal is achieved by the fact that the faceplate is equipped with two stars with teeth covering it, rotate relative to each other. half a step with the possibility of basing alternately with their combined face 'planes with a table, and the table is made with grooves, the dimensions of which are chosen more than the dimensions of the sprocket teeth inside them.

FIG. 1 shows the device ”’ in FIG. 2 - section A-A in FIG. 1; on fig.Z - section bb in figure 1.

The device includes a rotary faceplate 1 with attached to it

2

machined parts 2, covering the faceplate fastened coaxially with each other and sprockets 3 and 4 combined with their end surfaces, turned relative to each other by half a step. Non-overlapping combinable surfaces of each of the asterisks form the base bases. The faceplate through gear 5 is connected to the drive "!

6. The hinge 7 and the rod 8 of the cylinder 9 are designed to provide reliable contact with the reference surface of the faceplate support surface la sto15 10 rotating relative to the frame 11. Electrospindle 12 tool 13 is movable along the rotation axis instru "ment under the action of the mechanism 14 to ^m cottages.

The device works as follows.

The faceplate 1 with the parts 2 fixed in it is mounted on the support25 _{And the} surface of the table 10 is at the same time engaged with the gear 5, which provides rotation of the faceplate around the axis. Through the hinge 7 thrust 8 cylinder 9 presses

30 faceplate to the table 10. Basic over 3

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four

The table 10 is set strictly perpendicular to the axis of rotation of the tool 13 and is made strictly parallel to the plane in contact with the frame 11. Under the action of the feed mechanism 14, the spindle 12c is moved by the rotating tool 13 in the vertical direction and comes into contact with the workpiece 2. With the chuck rotating parts 2 is the removal of allowance from all workpieces.

After processing the flat surfaces of the parts on one side, the faceplate is turned down with its raw ends and the processing cycle is repeated. The position of the parts 2 relative to the faceplate remains unchanged.

The proposed device allows to obtain high parallelism. flat surfaces of parts.

Claims (1)

Apparatus of the Invention A device for precision machining of flat surfaces of parts, comprising a faceplate for fixing parts, a table and rotating. abrasive tool, about t-> characterized by the fact that, in order to ensure the parallelism of the ends of the parts by combining the installation bases in height l plane, the faceplate is equipped with two sprockets spanning it with teeth rotated relative to each other by half a step, with the option of basing alternately with their flat end bones with a table, and the table is made with grooves whose sizes are larger than the sprocket teeth.