SU544937A1 - Device for determining the skew of the through stone in the bushon - Google Patents

Description

one

The invention relates to the field of watch production and can be used to determine the amount of skew of the through-stone sphere relative to the plane of the wrist watch balance pad in the bushon.

A device for determining the skew of a through stone in a bushon is known, which contains a table for placing the tested node and an indicator.

Closest to the invention is a device for determining the skew of a through stone in the bushon, comprising a turntable with a base hole for accommodating the tested unit, mounted on the base, a bracket with a base and a fixing element, an indicator with a measuring foot 2.

The known devices do not provide sufficient accuracy for determining the skew.

The proposed device is characterized in that the bracket is fixedly mounted on the base, the clamping element is designed in the form of a spring-loaded quill bracket with a base tip mounted on the indicator measuring pin, and the fixing element is designed in the form of a sleeve with a rod placed on the bottom of the table coaxially with the base hole.

This allows for improved skew accuracy.

Pa figs. 1 shows the device, a general view;

in fig. 2 - the same, side view; in fig. 3 -

checked node in working position; on

FIG. 4 - bushon with overhead and through

stones

The device for determining the skew of the through stone in the bushon (Fig. 1) contains a U-shaped rectangular base 1 on which a turntable 2 is located to accommodate the tested unit and a cylindrical stand 3 with a bracket 4. A spring-loaded quill 5 is fixed to the bracket with a base tip 6, the diameter of the working end of which corresponds to the diameter of the bushing bush 7 under the patch stone 8 (Fig. 4). Pinol 5 is installed on the measuring foot 9 of the indicator 10, located inside the quill 5.

The working end of the measuring foot 9, having a diameter equal to 2/3 of the diameter of the through stone 11, is cut at an angle so that its contact with the sphere of stone 11 occurs at a point located 2/3 of the radius of the through stone 11 from the center. For the installation and fixation of the bushon 7, the hole 12 of the table 2 and the sleeve 13 with a spring-loaded rod 14 serve. For non-fixed relocation

pipolp 5 the device is equipped with a lever 15

pen. The disk 16, which interacts with the lever 15 by means of a spiral-shaped groove, leremep, quills a quill 5 with the possibility of its fixation. A system of levers 17, 18 serves to displace the rod 14 in the sleeve 13.

The device works as follows.

By turning the dial 16, iodime the quill 5 in the upper position. Pressing the lever knob 17, thereby lowering the rod 14 and bringing the sleeve 13 to its original position. Then set the reference 12 in the hole 12 of the turntable worktable 2 and, once again turning the disk 16, lower the quill 5 into the lower position. Moving the indicator 10 and the arresting device (not indicative) sets the arrow of the indicator 10 and zero. Iniol 5 is lifted and the reference is removed from the working table 2. All these operations and production are performed before the start of measurements.

In the opening 12 of the rotary working table 2, install a checked bushon 7 with tweezers so that the working end of the sleeve 13 pops into the hole of the bushon 7 (Fig. 3). By turning the disk 16, the iniol 5 is lowered into the lower working position so that the working end of the basic tip 6 enters the boron 8 of the bushon 7 (Fig. 3). Turning the handle of the lever 17, raise the rod 14 to the upper position, thereby fixing the bushon 7 on the expanding sleeve 13, at the same time remember the indication of the indicator 10.

When pressing the lever knob 15, they lift the ninol 5 and, turning the table at an angle of 60 °, make a second measurement. The measurement process is carried out around the entire circumference through 60 °. According to the difference in the measurement results, the magnitude of the skew is judged.

Claims (2)

1. Tarasov S.V. Watchmaking technologists, M., Maschgiz, 1968, p. 463. 2. Avt. St. No. 456248, cl. C 04D 7/00, 1972. / 7 S / 4 FIG. FIG. 2 - - W