RU2657132C1 - Device for measuring clearance - Google Patents

Abstract

FIELD: measuring equipment.

SUBSTANCE: invention relates to measuring technology and can be used in various fields of engineering for monitoring and measuring linear dimensions in conditions of limited access in assembly and installation of machine components where definition or setting of given gap is required. Device contains base with measuring tip fixed at one end, gap scale. Base is made in form of rod disposed rotatably within cylindrical body, at end of which through groove is formed on measuring tip side. Free end of rod protruding from housing is provided with handle. Measuring tip is made in form of wedge with rounded lateral surface located along rod lateral surface. Support end surface of wedge is located in plane perpendicular to longitudinal axis of rod, and measuring surface opposite to it is inclined relative to wedge support surface. Gaps are made angular and placed on housing from side of handle. At least one resilient element can be mounted on outer side surface of housing.

EFFECT: simple and reliable device that allows measuring gap by one measurement in hard-to-reach places from 0 to 1 mm with accuracy of 0,01 mm.

1 cl, 3 dwg

Description

The invention relates to measuring technique and can be used in various fields of technology for monitoring and measuring linear dimensions in conditions of limited access when assembling and installing machine components where the determination or installation of a given clearance is required.

Known wedge probe for measuring gaps (AS, USSR No. 1478034, IPC 4 G01B 3/30, publ. 07.05.89. Bull. No. 17), containing four measuring faces and two measuring scales located on adjacent faces. In order to reduce the metal consumption, it is made in the form of a square with beveled shelves, measuring faces are located on the outer surfaces of the shelves and on their beveled ends, and measuring scales are located on the inner surfaces of the shelves.

A known probe for measuring the gap between parts (AS USSR No. 1642222, IPC 5 G01B 3/30, publ. 04/15/91. Bull. No. 14), which contains a base with a measuring plate placed on it at one end, one of the sides which is made inclined and a linear gap scale is applied to it and a slider placed on the plate with the ability to move along it, a gap indicator. The slider has a stop for interacting with one of the measured parts. The base is made of two interconnected parts located on both sides of the plate and spring-loaded relative to one another. When measuring, one end of the plate from the side of the slider is introduced with one end into the gap between the measured parts, holding the probe by the base, and moving it inside the gap, holding the sections of the base. First, the slider rests on the part and the plate moves relative to the slider, and when the thickness of the plate corresponds to the gap, the plate stops and begin to move along the plate of the base section. At this point, the measurement is completed, the probe is taken out and the gap value is read on the scale on the scale indicator. This device is selected as a prototype.

The described devices for measuring the clearance between surfaces have low productivity, since they involve at least two measurements, as well as full or partial disassembly, necessary to measure one of the parts.

The invention is aimed at creating a simple and reliable device, "allowing to measure the gap in hard-to-reach places with one measurement and with high accuracy.

The technical problem is solved due to the fact that in the inventive device for measuring the gap, containing the base with a measuring tip located at one end, the gap scale, in contrast to the prototype, the base is made in the form of a rod placed to rotate inside a cylindrical body, at the end of which a through groove is made on the side of the measuring tip, the free end of the rod protruding from the housing is equipped with a handle, the measuring tip is made in the form of a wedge with a rounded side surface A view located along the lateral surface of the rod, the supporting end surface of the wedge is located in a plane perpendicular to the longitudinal axis of the rod, and the opposite measuring surface is inclined relative to the supporting surface of the wedge, while the clearance scale is angled and placed on the housing from the handle side.

At least one resilient member may be installed on the outer side surface of the housing.

Using the totality of features allows you to measure the gap in hard-to-reach places with one measurement and with fairly high accuracy.

The invention is illustrated by drawings.

In FIG. 1 schematically shows the inventive device. In FIG. 2 and 3 schematically show the measurement of the gap between the two parts A and B using the inventive device.

The device for measuring the gap contains a base 2 with a measuring tip 4 located at one end, a gap scale (not shown in FIG.), Applied to the end surface 5 of the housing 1. The base is made in the form of a rod 2, rotatably placed inside the cylindrical housing 1 ( the rod 2 should be pressed tightly enough to the inner surface of the housing to reduce the measurement inaccuracy), at the end of which a through groove is made from the side of the measuring tip 7. The free end of the rod 2, protruding h of the housing 1, equipped with a handle 3. The measuring tip is made in the form of a wedge 4 with a rounded side surface located along the side surface of the rod 2. The supporting end surface of the wedge 4 is located in a plane perpendicular to the longitudinal axis of the rod 2, and the opposite measuring surface is inclined relative to the supporting the surface of the wedge 4 from zero to a predetermined value, while the gap scale is made angular and placed on the end surface 5 of the housing 1 from the side of the handle 3. On the outer side surface of the Pusa 1 can be installed at least one resilient element 6 (for planting density of the body 1 in the opening between the measured parts), made for example in the form of Belleville springs.

The device operates as follows. In the initial state, the measuring tip in the form of a wedge 4 does not protrude beyond the limit dimensions of the housing 1. For example, it is necessary to determine the gap between the two parts (see Fig. 2 and 3). A device for measuring the gap is lowered through an existing hole in one part until it stops in another part, the handle 3 is turned relative to the housing 1. The wedge 4, turning together with the rod 2, abuts against the corner of the opening of the first part. Having previously calibrated the device and having connected the angle of rotation of the handle 3 relative to the housing 1 with the scale 5, it is possible to unambiguously and fairly accurately determine the required gap. In figures 2 and 3 shows the position of the wedge 4, respectively, before and during the measurement of the gap between the parts.

Using the inventive device, it is possible to measure gaps from 0 to 1.0 mm with an accuracy of 0.01 mm.

Claims (2)

1. A device for measuring the gap, comprising a base with a measuring tip fixed at one end, a gap scale, characterized in that the base is made in the form of a rod placed to rotate inside a cylindrical body, at the end of which a through groove is made from the side of the measuring tip, free the end of the rod protruding from the housing is provided with a handle, the measuring tip is made in the form of a wedge with a rounded side surface located along the side surface of the rod, supports the wedge end surface is located in a plane perpendicular to the longitudinal axis of the rod, and the opposite measuring surface is inclined relative to the wedge supporting surface, while the gap scale is angled and placed on the handle side of the wedge. 2. A device for measuring the gap according to claim 1, characterized in that at least one elastic element is installed on the outer side surface of the housing.

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