SU1589034A1 - Device for measuring angular position of crankpins - Google Patents

Abstract

This invention relates to instrumentation technology. The aim of the invention is to improve the performance and accuracy of measurement, this is achieved by the fact that the device for measuring the arrangement of the crankshaft connecting rod journals, which contains the plate, bearing prisms for the main journals, the reading unit on the rack and the stop, are provided with buildings with vertically spring loaded coaxially with the bearing prisms. they are forked catchers for connecting rod necks, the inner surfaces of which are made at an acute angle to the plane of symmetry, which coincides with the plane of symmetry of the supporting prisms, and a divider that poured onto the shank of the shaft to be measured and made in the form of a cross washer. 1 hp f-ly, 8 ill.

Description

The invention relates to a control and measuring technique.

The aim of the invention is to improve the performance and accuracy of measurement.

FIG. 1 shows the proposed device, a general view; in fig. 2 - the same, top view; in fig. 3 shows section A-A in FIG. one; in fig. 4 shows a section BB in FIG. one; in fig. 5 shows a section B-B in FIG. one; in fig. 6 - section GG on. one; in fig. 7 is a section d-d in fig. 6; in fig. 8 is a section E-E of FIG. 6

A device for measuring the arrangement of the crankshaft connecting rod necks contains a divider 1 and a plate 2 on which two support prisms 3, bodies 4, a column 5, an emphasis 6 are mounted coaxially. In the rack 5, sleeves 7 and 8 are mounted. In the hole of the sleeve 7 is movable under the action of the spring 9 rod 10, and in the hole

bushing 8 fixed indicator 11, from which the magnitude of the angular misalignment of the connecting rod journals II, III, IV of the measured crankshaft 2 relative to the plane passing through the axes of the main journals and the first connecting rod neck I. is removed. The stop 6 is a welded structure and is designed for orientation of the measured crankshaft along the axis of the supporting prisms 3.

Fork catchers 13, springs 14 and plugs 15 are installed in U-shaped housings. The sides of the hanging of housings 4 are closed with strips 16 and 17. Fork catchers 13 are installed with the ability to move upwards in U-shaped housings 4 and under the action of springs 14, and downward under the weight of the measured crankshaft 12 and the crank pins I-IV are caught alternately through 90 ° in the lower position. Internal surfaces t and p lo

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The drives 13 are made at an acute angle of 8 ° and are symmetrical about the plane a.

The divider 1 is made in the form of a cross-shaped washer, the working surfaces of which are located at right angles relative to each other and are intended to contact with the rod 10 in the plane a. The divider 1 is fixed on the mandrel 18 with screws and a pin. In the hole of the mandrel 18 there is a rod 19, which is moved by a nut 20. For lifting and supplying the reading unit, the device can be equipped with, for example, a unit consisting of two prismatic supports 21, which are connected through a rocker arm 22 with an air-cylinder 23.

Measurement using a device for measuring the angular position of the crankshaft connecting rod necks is performed as follows.

A mandrel 18 with a divider 1 is mounted on the shank of the crankshaft 12, and the rod 19 is inserted into the clamping groove d by means of a nut 20. The assembled unit is installed by the main journals “2 and” 4 on the prismatic supports 21 so that the first crank neck “1 is in the lower position. Then, using a pneumatic cylinder 23, pushes this knot with extreme radical necks “1 and” 5 onto support prisms 3, and with crank neck “1” into the groove of the catcher 13. At the same time, one of the working surfaces e divider 1 touches the rod 10, which is in contact with the tip of the indicator 11.

After that, set the arrow indicator 11 to zero. In order to control the second crank neck, it is necessary, using a pneumatic cylinder 23, to raise the crankshaft 12 with the mandrel 18 and the divider 1 through an angle equal to 90 ° through the yoke 22 using prismatic supports 21. Second shatunna neck And at the same time occupy the lower position. Then, using the pneumatic cylinder 23, it is necessary to lower the shaft 12 with the mandrel 18 and the divider 1 with the main journals "1 and" 5 onto the support prisms 3,

and the second crank pin P in the groove of the catcher 13. At the same time, the other working surface e of the divider 1 touches the rod 10 which is in contact with the tip of the indicator 11.

The deviation of the indicator hand 11 from the zero mark will indicate the value of the angular position of the second crank pin O relative to the first cone-cheek "1.

To measure the angular position of the third crank neck III and the fourth crank pin IV relative to the first crank neck I, it is necessary to carry out similar operations to control the second crank neck II.

Claims (2)

1. A device for measuring the angular position of the crankshaft connecting rod necks, which contains a plate, two supporting prisms installed on it, designed to install the extreme main journals of the measured shaft, a stand with a reading unit and an emphasis, characterized in that in order to increase productivity and accuracy of measurement, it is equipped with U-shaped housings installed on a plate coaxially with supporting prisms with spring loaded in the direction perpendicular to the base plane of the plate, forked catchers, Designed for mounting the crankpins of the measured shaft in them, the internal surfaces of catchers are made at an angle of 4 ° to their plane of symmetry, which coincides with the plane of symmetry of the supporting prisms, and a divider designed to be mounted on the shank of the measured shaft. 2. Device pop. 1, characterized in that the divider is made in the form of a mandrel with a cross washer installed on it, the working surfaces of which are located at a right angle to each other and are designed to interact with the measuring tip of the reading unit. n ,. 1 5-6 but FIG L / J FIG. 3 and FIG. five € FIG. 6 HER J / ML FIG. 7 eleven