SU865610A2 - Rotary indexing table - Google Patents

Description

(54) ROTARY DIVISION TABLE

one

The invention relates to the field of mechanical engineering and can be used in rotary dividing tables.

According to the main author. St. No. 663545 are known rotary dividing tables containing a pre-locking mechanism mounted on the base, made in the form of two sliding stops, installed with the possibility of alternate interaction with fixed stops, the axes of which are perpendicular to the axes of the corresponding sliding stops and located on the underside of the face plate on two concentric circles x, and the central angle between two adjacent fixed stops located on different concentric circles is equal to Glu turn planschayby 1.

A disadvantage of the known device is the low sensitivity of the adjustment of the fixed stop of the preliminary fixation mechanism.

The purpose of the invention is to increase the adjustment sensitivity and serviceability.

The goal is achieved by the fact that the axes of the fixed stops are inclined relative to the axes of the retractable stops.

FIG. 1 depicts the proposed device; in fig. 2 shows section A-A in FIG. one.

The rotary-dividing table contains a base 1 and a rotary faceplate 2. On the base 1 are mounted interlocking retractable stops 3 of the pre-fixation mechanism and the fixer 4 of the final fixation, interacting with the separating holes made on the faceplate 2.

On the faceplate 2 in the cups 5, fixed stops 6, whose axes are racks, are mounted so that the corresponding outward extension of the jaw 3. are placed at an angle to the axis. The angle 6 6 is recommended to be chosen in the range of 10-15 °. An adjusting nut 7 providing movement of the fixed stop 6 and the lock nut 8 are located above the faceplate in a convenient service area.

In order to adjust the final fixation fixture 4 when adjusting the table with the corresponding dividing hole on the faceplate 2, the adjusting nut 7 is rotated. In this case, the fixed stop 6, interacting with the corresponding retractable stop 3, will move along the axis by an amount D defined by the thread pin and the angle of rotation of the adjusting nut 7. At the same time, the movement of the fixed stop 6 in the direction perpendicular to the axis of the corresponding sliding stop 3 (Fig. 2) will be equal to A, and will be

Ai D-sinc /,

where AI is the amount of movement of the fixed stop in the direction perpendicular to the axis of the corresponding retractable stop;

D is the amount of movement of the fixed stop along its axis;

 - the angle of inclination of the axis of the fixed stop relative to the axis of the corresponding retractable stop.

For example, when moving a fixed stop (in a known table) along its axis by 0.1 mm, it will move in the direction

in the proposed device at oi 15 ° and other conditions being equal (thread clamp and angle of rotation of the adjusting nut), the displacement amount Ai will be

D I 0,1-sin 15 ° 0,026 mm

Consequently, the adjustment sensitivity of the fixed support mechanism of the preliminary function of the proposed device will increase by about 4 times compared with the known one.

Claims (1)

Invention Formula Rotary dividing table according to ed. St. No. 663545, characterized in that, in order to increase the sensitivity of the set-up and ease of table maintenance, the axes of the fixed stops are inclined relative to the axes of the extendable stops. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 663545, cl. B 23 Q17 / 02, 07.07.77 fc / (Reg. 2