SU1448195A1 - Apparatus for inspecting the dimensions of stepped-diameter shafts - Google Patents

Abstract

The invention relates to casting measurements and is intended to control the dimensions of stepped shafts. The purpose of the invention is to improve the performance and accuracy of measurement by supplying a device containing a standard 13, an indicator 19 with a measuring tip 18, a plate 1 with racks 2,3 installed on it, into which an insert 4 and a sleeve 6 with a sleeve 7 are inserted. The part 21, on the sleeve 7, has a protrusion 8 designed to contact with the spherical protrusion of the shoulder of the two shoulders 20 mounted on a block 15, the second arm 17 of which is intended to contact the measuring arm the end 18 of the indicator 19, installed on the block 15. 3 Il.

Description

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The invention relates to linear measurements and is intended to control the dimensions of the step steps of the shafts.

The purpose of the invention is to increase the productivity and accuracy of control.

Fig, 1 shows the device section; in fig. 2 is a section A-A in FIG. one; FIG. 3 is a view B of FIG. one.

The device contains a plate 1 with racks 2 and 3 installed on it. In the gas of the rack 2, an insert 4 is inserted, which is pressed up from the top by a flap 5. In the rack 3 there is inserted a sleeve 6 into which is in turn inserted a pressing sleeve 7 with a protrusion 8, a pin 9 and a radial hole 10. On the rack 3 there is also installed a hinged plate 11 with a screw 12. A standard 13 and a guide strap 14 are installed on the plate, which is used to guide the movement of the block 15 by the groove 16, which is also mounted on the plate 1, On the block 15 installed double shoulders lever, one of which 17 designed for contacting the measuring tip 18 of the indicator 19, also mounted on the block 13, and the second arm 20 is provided with a spherical protrusion on the end, intended for sequential contact with the reference 13, the protrusion, 8 sleeves and the test piece 21

The device works as follows. at once.

In the initial position, the insert 4 is removed from the rack 2, and the strip 11 is folded back, the sleeve 7 is retracted to the right. The controlled stepped roller 21 is inserted with a bore diameter of 4 into the insert 4 and with it into the groove. stand 2 and is pressed by the screw of the strap 5. The sleeve 7 is shifted to the left until it stops at the end of the roller 21, based it. By screw 12, the sleeve 7 with the roller 21 is pressed against the base end of the insert 4. The removable shoe 15 is installed by its groove 16 on the guide bar 14, while the lever arm 17 abuts against the standard 13, and the indicator 19 is adjusted to zero. Moving the block 15 along the bar 14 makes contact of the spherical protrusion of the shoulder 20 with the protrusion 8 of the sleeve 7, measuring the size B deviation. With further movement of the block 15 along the bar 14, the spherical protrusion of the shoulder 20 enters the radial hole 10 of the sleeve 7 and contacts the end of the roller 21, measuring the deviation of size G. Thus, in one stroke of the block 15, two sizes are monitored successively. If necessary, the device can be equipped with any number of protrusions similar to the protrusion 8, and multi-stage parts can be measured.

Claims (1)

Invention Formula A device for controlling the dimensions of stepped shafts, containing a standard and an indicator with a measuring tip, characterized in that, in order to increase productivity and accuracy of control, it is equipped with a plate with racks installed on it, an insert and a bushing installed in the corresponding racks, with a compression sleeve with a radial hole and a protrusion installed in the sleeve, and mounted on the plate with the possibility of moving on it with a block with a two-arm lever, one of the arms of which is intended to contact measuring tip of the indicator, and the other shoulder is made with a spherical protrusion at the end, designed for sequential contact with the standard, the protrusion of the sleeve and the measured part.