SU812539A1 - Apparatus for correcting shearing angle of crystallographycally oriented plates - Google Patents

Description

leverage surfaces by means of pushers.

FIG. 1 schematically shows the device offered, general view; and FIG. 2 - the same, top view on 3 shows a section BB in FIG. 2; on ig. 4 is a diagram for calculating the ratio of the movement of the movement to the movement of the setting of the nylon plate angle.

The device case consists of two suits, the upper 1 and lower 2, mounted on a common shaft 3 with the possibility of turning the upper disk relative to the lower one and fixing its position. Rotation of the upper disk relative to the lower one can be carried out by any mechanism, for example, using a worm gear.

In the upper disk there are working sections 4 and pushers 5 are installed (Fig. 3), transmitting the adjustment movement. Each of the working sections includes a table b, movably fixed on the axis 7, and a spring 8, which ensures a constant contact of the table with the pusher. In the lower disk, respectively, the working sections contain mechanisms for adjusting the position of the tables. The adjustment mechanism consists of a pivot arm 9, constantly in contact with the pusher and mounted on the axis 10 at an angle of ° C to the plane of the discs, a spring 11 and a set screw 12.

. Setting the lever at different angles dl is provided to enable the possibility of correcting plates on the same fixture, the correction angles of which are outside the range of the selected setting, or the plates with different corrections to the cut angle simultaneously.

The length of the pusher is chosen in such a way that when its axis is above the axis 10 of the lever, the mounting surfaces of the work tables are in the horizontal plane (initial position).

The internal cavities present in each of the tables communicate through hoses with an air evacuation system which discharges the order of Hg. With the atmosphere, the internal cavities are connected with small-diameter holes that extend onto the working surface of the table, which serves as the mounting base for fixable plates 13.

The device works as follows.

The upper disk 1 is turned, for example, along the limb of the worm gear relative to the lower disk 2 by the required angle T, corresponding to the correction of the cut angle. Together with the upper disc, the pusher 5 moves, constantly in contact with

the action of the spring 8 with the lever 9 mounted on the lower disc.

In this case, the pusher shifts axially downward, as a result of which, under the action of the spring B, the table 6 is rotated by a predetermined angle of correction of the cutting angle. The plates 13 are placed on the table, in the cavity of which the discharge is created, and fixed in accordance with the chosen orientation. For the orientation of the table, equal to the correction angle cutoff p, the angle of rotation of the upper disk relative to the lower limb in the general case can be determined by the formula

,,,.,

where p is the angle of the correction of the plane angle0. bone cut plates

wtxt ANGLE Correction angle cutoff plane batch plates}

cL - the angle of inclination of the lever 5 cf the radius of the circle, on which the middle lines of the levers are located

t is the length of the base table

Q is the length of the horizontal projection. The contact line of the pusher with the lever. The maximum correction angle, p, is set as a function of the accuracy of the inserts produced by the cutting operations. For example, for piezoelectric elements from quartz I motx 60 °.

From this, the gear ratio of the lever adjustment movement and the table setting movement is calculated.

According to the scheme (Fig. 4), it can be seen that t 9-Rtoh | 9o 25 structurally choose P, 50 mm, then with 60 l / a. , 5 j In this case, the gear ratio n

i can be defined as the ratio of the length: the horizontal projection of the line of contact of the pusher with the lever (adjustment movement) to the movement of the pusher h Q (movement of the table setting), n в - ctg "t 1 25. This ratio, even without taking into account the gear ratio: worm transfer, provides a significant increase in the accuracy of the orientation of serviceable plates.

In addition, the design of the proposed device has wide technological capabilities. On one device due to a change in angle Ы. the tilt of the lever can be processed plates without the use of dimensional tiles with different corrections for the angle of cut. The use of the device is possible on grinding and finishing machines of various types.

Claims (1)

1. USSR author's certificate 296371, cl. B 24 B 41 / OfO, 1969., 13 / S-6nffSefMi / iffO