SU456131A1 - Device for measuring the cones of tool holders - Google Patents

Description

one

The invention relates to measuring instruments and can be applied to measuring cones of tool holders with a draw window.

Devices for measuring the cones of tool holders are known, comprising two three-contact indicator brackets, tension rods for securing the brackets parallel to each other at a predetermined distance, and a stop for orienting the position of the part.

This design of the stop does not provide the necessary accuracy of measuring the cones of the tool mandrels with a tapping window.

The proposed device differs from the known ones in that the abutment is made adjustable in the direction perpendicular to the axis of the rods. Such an improvement makes it possible to INCREASE the measurement accuracy of the cones of the tool holders with a tightening window when the calculated diameter of the taper mandrel is located at a given distance from the cut-out of the draw window.

FIG. 1 shows schematically the described device, a general view; in fig. 2 and 3 are sections along A-A and BB in FIG. one.

The device contains two three-contact indicator brackets 1, each of which contains knife supports 2 and an indicator 3 located at an angle of 90 °, clamp rods 4 and 5 for fixing the brackets parallel to each other, a housing 6 placed on the straps 5, and an emphasis 7, having the ability to move in the rectangular lase of the housing 6 perpendicular to the stitches 4 and 5 with the screw 8.

The device is used as follows. It is mounted on the measured and tool mandrel and pressed against the knife supports 2, with the support 7 entering the B hole in the rear window, and the device is moving along the measuring holder until the support contacts the tightening window surface. Screw 8 stop is pressed against the surface of the draw window. This achieves the smallest indication of the indicators 3.

Prior to measurement, the device is tuned to the reference part.

Subject invention

A device for measuring cones and trim mandrels with a tightening window, containing three-contact indicator brackets, tension rods for fastening the brackets parallel to each other at a predetermined distance, and a stop for orienting the part, characterized in that in order to improve the measurement accuracy, the stop made adjustable in the direction perpendicular to the axis of the rods.

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