CN201034525Y - Micrometer special for middle thick wall steel tube - Google Patents

Abstract

The utility model provides a micrometer in particular for a medium thickness pipe, comprising a spherical anvil, a fixing sleeve. The spherical anvil is lengthened to a range from 8 mm to 12 mm along the axial direction thereof, the initial scale of the fixing sleeve is 15, the maximum scale is 40 mm, and the scale range is from 15 mm to 40 mm. The utility model has the effects that by measuring using the micrometer of the structure, the measuring range of the micrometer is lengthened, not long the original precision of the micrometer is maintained, but also the wall thickness of the medium thickness pipe of a thickness between 18 mm and 34 mm is conveniently and rapidly measured, and the measuring speed is enhanced for nearly 3 times.

Description

The special-purpose milscale of medium thickness pipe

Technical field

The utility model relates to a kind of measurer, the special-purpose milscale of particularly a kind of medium thickness pipe.

Background technology

Generally, along with the increase of annual production, the kind of steel pipe also constantly increases with the needs in market in steel pipe's production in enterprise, and the thickness of steel pipe specification does not wait from the 4.5mm-48mm scope.Wall thickness specifications is a medium thickness pipe between 18mm-34mm, and thickness of steel pipe in this type of specification limit of checking measurements needs two kinds of milscales with 0-25mm and 25-50mm range, checks the upper and lower bound of thickness of steel pipe respectively.For example wall thickness is the 25mm steel pipe, and its upper limit 28.13, lower limit 22.5mm the time will frequently change milscale in check, just can finish the wall thickness check to this steel pipe, brings that speed is slow, the problem of complex steps, low precision, can not satisfy the requirement of production testing.

Summary of the invention

For solving the problem that exists in the above-mentioned technology, the purpose of this utility model provides the special-purpose milscale of a kind of medium thickness pipe, is beneficial to improve speed, the reduced inspection process of check medium thickness pipe wall thickness, improves accuracy of detection.

For achieving the above object, technical solution of the present utility model provides the special-purpose milscale of a kind of medium thickness pipe, includes sphere gage button, fixed muffle, wherein: with described sphere gage button along its axial lengthening 8-12mm; Start index on the described fixed muffle is 15, and maximum scale is 40mm, and meter full scale is 15-40mm.

Effect of the present utility model is to adopt the miking of this structure, has increased the range of miking, has both kept former milscale precision, measures the wall thickness of the medium thickness pipe between the 18mm-34mm again easily and quickly, improves nearly 3 times of measuring speed.

Description of drawings

Fig. 1 is the special-purpose milscale sketch of medium thickness pipe.

Among the figure:

1, sphere gage button 2, fixed muffle

3, check and correction sample piece 4, micrometric screw

5, microdrum

Embodiment

Reaching embodiment in conjunction with the accompanying drawings is illustrated special-purpose milscale structure of medium thickness pipe of the present utility model and use.

The special-purpose milscale of medium thickness pipe of the present utility model includes sphere gage button 1, fixed muffle 2, and along its 8-12mm that axially extends, the 10mm that preferably extends is advisable with described sphere gage button 1.The distance range that sphere gage button 1 measurement face is measured faces to little screw rod 4 is between the stuck-at-0-45mm, is convenient to set range ability and workpiece is measured; Start index on the described fixed muffle 2 is 15, and maximum scale is 40mm, and range is fixed as 15-40mm, provides minimum measured value and greatest measurement for measuring medium thickness pipe.

The special-purpose milscale of medium thickness pipe of the present utility model is used to check wall thickness specifications steel pipe between 18mm-34mm, and range is designed to 15mm-40mm, scale division value 0.01mm.For example checking wall thickness is the 25mm steel pipe, and the upper limit requires 28.13mm, lower limit to require 22.5mm.When use medium thickness pipe special use of the present utility model milscale, be that the check and correction sample piece 3 of 15mm is calibrated at first with length, then, steel pipe one side pipe wall is placed between sphere gage button 1 and the micrometric screw 4, rotation microdrum 5 closely contacts up to sphere gage button 1, micrometric screw 4 and steel pipe walls three, reads measurement numerical value with fixed muffle 2 scales and microdrum 5 scales then.Constantly prolong the duplicate measurements of steel pipe tube wall, can obtain the thickness of steel pipe measured value.For example, the check wall thickness is the 25mm steel pipe, obtains 8 numerical value in same cross section, is recorded as 27.56mm, 25.45mm, 26.10mm, 24.35mm, 23.28mm, 22.9mm, 25.82mm, 26.94mm.Once can finish wall thickness with the special-purpose milscale of medium thickness pipe of the present utility model is the check of 25mm steel pipe, has changed the situation that two kinds of milscales just can be finished this type of work for inspection of in the past will using instead.

When the steel pipe of check 21mm---30mm wall thickness, the used time is brought up to steel pipe of check in average 30 seconds by steel pipe of check in average 1 minute and 12 seconds in the past, and check speed improves nearly three times.

Claims (1)

1. the special-purpose milscale of a medium thickness pipe includes sphere gage button, fixed muffle, it is characterized in that: with described sphere gage button (1) along its axial lengthening 8-12mm; Start index on the described fixed muffle (2) is 15mm, and maximum scale is 40mm, and meter full scale is 15-40mm.

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