Wire and rollers technical conditions. Wire and rollers specifications Marking, packaging, transportation and storage

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INTERSTATE STANDARD

WIRE AND ROLLERS

TECHNICAL CONDITIONS

Official edition

IPK PUBLISHING STANDARDS Moscow

INTERSTATE STANDARD

WIRE AND ROLLERS Specifications

Wires and rolls. Specifications

ISS 17.040.30 OKP 39 3130

Introduction date 01.01.90

This standard applies to wires and rollers for measuring the average diameter of an external thread, as well as measuring the thickness of the teeth and the width of the grooves of splined shafts and bushings with an involute profile.

1. TYPES, BASIC DIMENSIONS AND TOLERANCES

1.1. Wires and rollers should be of the following types:

I - smooth wires (Fig. 1);

II - step wires (Fig. 2);

d n - d> 0.4 mm

1.2. Nominal diameters of wires and rollers d D for measuring the average diameter of the external thread, depending on the pitch, are given in table. 1 and 2.

Official edition Reprinting prohibited

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of Machine-Tool and Tool Industry of the USSR

2. APPROVED AND INTRODUCED INTO EFFECT by the Resolution of the USSR State Committee for Standards dated November 29, 1988 No. 3878

3. The standard fully complies with ST SEV 242-75

5. REFERENCE REGULATORY AND TECHNICAL DOCUMENTS

	Item number		Item number

6. The limitation of the period of validity was removed according to the protocol No. 4-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 4-94)

7. REPUBLICATION. July 2003

Editor M.I. Maksimova Technical editor O. N. Vlasova Proofreader V.S. Black Computer layout L.А. Circular

Ed. persons. No. 02354 dated 07/14/2000. Put in the set 06/17/2003. Signed for printing on July 14, 2003. Uel. print l. 1.40.

Uch.-ed. l. 1.07. Circulation 114 copies. C 11237. Zak. 566.

IPK Publishing house of standards, 107076 Moscow, Kolodezny per., 14. http://www.standards.ru e-mail: [email protected] Typeset in the Publishing House on a PC Branch IPK Standards Publishing House - type. "Moscow printer", 105062 Moscow, Lyalin per., 6.

Plr No. 080102

For each specific type of thread and pitch, the d D values given in table. 1-3 are preferred for use.

It is allowed to use wires and rollers of other diameters within the values of d D;

dn, choosing them from among the preferred ones.

Thread type and profile angle

metric a = 60 °

trapezoidal a = 30 °

persistent a =

33 °, p = 30 °, 3 °

Continuation of table. one

Dimensions in mm

Thread type and profile angle
metric a = 60 °	trapezoidal a = 30 °	persistent a =	33 °, p = 30 °, 3 °

Note. For trapezoidal and thrust threads, the d D values are not given, since the wires

and rollers of these dimensions will be located below the outer diameter of the controlled profile.

Number of steps on a length of 24.5 mm	Thread type and profile angle
	unified (inch) a = 60 °

Dimensions in mm

Continuation of table. 2

Number of steps on a length of 24.5 mm	Thread type and profile angle
	unified (inch) axis = 60 °	tubular cylindrical and conical a = 55 °, inch a = 55 °

1.4. Summary table of nominal diameters d D of wires and rollers for measurement

the average diameter of the external thread is given in Appendix 2.

1.5. Formulas for calculating the diameters of wires and rollers for measuring the average diameter of an external thread are given in Appendix 3.

1.6. Nominal diameters of wires and rollers d D for measuring parameters of spline

compounds with an involute profile are given in table. 3.

Table 3

1.7. The lengths of the wires and rollers L and the working surface Zj must correspond to those indicated in table. 4.

Note. The length of wires intended for use with a fixture is not specified.

1.8. Numerical values of maximum deviations d n wires and rollers, depending on

accuracy classes 0 and 1, should not exceed those indicated in table. 5.

Table 5

Range of diameters d n, mm "o	Limit deviation, microns
Range of diameters d n, mm "o	Accuracy class 0	Accuracy class 1

5.176 to 8.690
10.353 to 26.069
28,000 to 35,000

GOST 2475-88 S. 5

Deviations in the shape of the working surface of the wire and roller (any deviation from the roundness or profile of the longitudinal section) must be within the diameter tolerance.

2. TECHNICAL REQUIREMENTS

2.1. Wires and rollers should be made in accordance with the requirements of this standard according to drawings, approved in the prescribed manner, dimensions:

from 0.045 to 0.346 mm for type I,

"0.115" 4.980 mm "" II,

"5.176" 35.00 mm "" III.

2.2. The design of the wires should ensure the possibility of their use with devices for hanging or mounting on the device.

Note. The device for hanging wires on the device must have a hanging hole with a diameter of at least 2.5 mm and provide a distance from the center of this hole to the middle of the wire length of at least 55 mm.

2.3. Wires and rollers should be made of carbon steel U10A, U12A in accordance with GOST 1435; from chromium steel X - according to GOST 5950; from bearing steel ШХ15 - in accordance with GOST 801.

It is allowed to make wires and rollers from high speed steel.

2.4. Working surfaces of wires and rollers with d D> 0.866 mm must have chrome or other wear-resistant coating.

2.5. Non-working surfaces of wires and rollers without wear-resistant coating must be subjected to anti-corrosion treatment.

2.6. The hardness of the working surfaces of wires and rollers made of carbon and chromium steels is not less than 59 HRC 3; from high-speed steel - not less than 63 HRC 3.

It is allowed to make type I wires with a hardness not lower than 51 HRC 3.

2.7. Wires and rollers for measuring the average diameter of an external thread should be made in two accuracy classes: 0 and 1. Wires and rollers for measuring the parameters of spline involute joints - accuracy class 1.

2.8. The roughness parameter Ra according to GOST 2789 of the working surfaces of wires and rollers is no more than 0.04 microns.

2.9. On the working surfaces of wires and rollers, there should be no defects that worsen their performance.

2.10. Wires and rollers should be produced in sets consisting of:

of 3 pcs. one type with equal nominal diameters - for measuring the average diameter of external threads;

of 2 pcs. of the same type with equal nominal diameters - for measuring the parameters of spline joints.

2.11. The conventional designation of wires and rollers shall consist of the name ("wires", "rollers") of the type, nominal diameter, accuracy class and designation of this standard.

An example of a symbol for smooth wires with a diameter d D = 0.101 mm of accuracy class 0:

An example of a symbol for stepped wires with a diameter d D = 2.095 mm of accuracy class 1:

An example of a conventional designation of rollers dp = 5.207 mm of accuracy class 0:

2.12. Wires and rollers should be aged and demagnetized.

2.13. The full installed resource of wires and rollers is at least 2000 measurements.

The criterion for the limiting state is non-compliance with the requirements and. 1.8.

3. ACCEPTANCE

3.1. To check the compliance of wires and rollers with the requirements of this standard, state tests, acceptance control, periodic tests and tests for reliability are carried out.

3.2. The procedure for conducting state tests is in accordance with GOST 8.383 1 and GOST 8.001 1.

3.3. During acceptance control, each wire or roller should be checked for compliance with the requirements of paragraphs. 1.8 and 2.9.

Check on PP. 1.8 (regarding the error in the shape of the working surface of wires with a nominal diameter of up to 0.346 mm), 2.2; 2.6; 2.8; 2.10; 2.12 (regarding demagnetization), 5.1; 5.4 should be carried out selectively in accordance with GOST 18242 2 and GOST 18321.

Sampling plan:

control level - II;

the type of control is normal;

control plan type - one-stage;

sample size from a batch - according to GOST 18242;

method of selection from a batch - "blind" in accordance with GOST 18321;

acceptance level of defectiveness - AQL = 0.65.

The lot meets the established requirements if the number of defects z in the sample is less than or equal to the acceptance number A c and does not meet the established requirements if z is equal to or greater than the rejection number R e for the given inspection plan.

3.4. Periodic tests are carried out at least once every three years for compliance with the requirements of paragraphs. 1.1; 1.7; 1.8; 2.2; 2.4; 2.5; 2.6; 2.8; 2.9; 2.10; 2.12.

For testing, at least 10 sets of wires and rollers are selected from among those that have passed the acceptance control, including at least 2 nominal diameters of 0 and 1 accuracy classes.

If, during periodic tests, wires or rollers are found to be inconsistent with at least one of the requirements of this standard, then twice the number of wires or rollers of a given size shall be tested.

Retest results are final.

3.5. Compliance with the requirement of clause 2.13 is confirmed by the results of the analysis of controlled operation of at least 10 sets of wires or rollers, which may be combined with periodic tests.

4. METHODS OF CONTROL AND TESTING

4.1. Methods and means of checking wires and rollers - according to MI 2078.

4.2. The results of the analysis of controlled operation are considered positive if the number of measurements to the limit state does not exceed 2000.

5. MARKING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. On devices for hanging or installing wires and on the non-working surfaces of the rollers, the following should be applied:

nominal diameter;

accuracy class for products of accuracy class 0; trademark manufacturer; designation of the date of issue;

the image of the State Quality Mark when it is awarded in the manner established by the USSR State Standard.

Notes:

1. For Type I wires, markings should only be applied to the sheath.

2. It is allowed to put the image of the State Quality Mark only in the operational documentation.

5.2. Before packing, wires and rollers must be preserved in accordance with GOST 9.014. The conservation period is at least 2 years.

5.3. Wires and rollers wrapped in capacitor paper in accordance with GOST 1908 must be packed in sets in cases to ensure their safety.

Note. Wire sizes d n up to 0.118 mm are packed in four sets in one case.

5.4. Each case must be marked with:

nominal diameter;

accuracy class;

manufacturer's trademark;

designation of this standard.

5.5. For transportation, a batch of wires (rollers) packed in cases must be packed in boxes in accordance with GOST 2991, lined inside with a waterproof material.

It is allowed to use other boxes for transportation, ensuring the safety of wires (rollers) during transportation and made according to drawings approved in the prescribed manner.

5.6. Each batch must be accompanied by a document certifying the compliance of wires (rollers) with the requirements of this standard.

5.7. Transport marking - in accordance with GOST 14192.

5.8. Wires and rollers in packaging according to clause 5.5 are transported by all types of transport in covered vehicles or containers in accordance with GOST 13762.

5.9. Packaged wires and rollers should be stored in a dry room under conditions according to group 1 (L) GOST 15150.

6. MANUFACTURER'S WARRANTIES

The manufacturer guarantees the compliance of wires and rollers with the requirements of this standard, subject to the conditions of operation, transportation and storage.

The warranty period for wires and rollers is 12 months from the date of commissioning.

SELECTION OF WIRE AND ROLLERS FOR MEASURING THE AVERAGE DIAMETER

EXTERNAL THREADS

1. Terms and explanations

1.1. dr. - the nominal diameter of the wire or roller, which in the process of measuring the thread with

symmetric profile provides points of contact A () with the measured profile at the level of the average diameter (Fig. 4).

For threads with an asymmetric profile, the point of contact A () of the wire of nominal diameter d D with the measured profile is provided only on the side of the root with a large angle of inclination (Fig. 5).

1.2. d D; d D - the limiting values of the diameter of the wire or roller, at which the points of contact A

with the sides of the thread profile are removed from the points of contact A, (provided by wires with a diameter d n) by

the maximum permissible distance (Fig. 6 and 7).

Crap. 6 Damn. 7

2. When using wires and rollers of the preferred diameter d n - the measurement error is minimal.

3. When using wires and rollers of preferred diameters for measuring the average diameter of threads with an asymmetric profile, the error in the largest angle (3 does not affect the measurement result, and the error in the smallest angle y affects the measurement result and must be taken into account.

4. The use of wires and rollers with the preferred diameter is not allowed if:

the point farthest from the thread axis on a wire or roller with a diameter d n is located below

outer diameter of the thread;

for trapezoidal threads, the diameter of the wire or roller touches the inside diameter of the thread.

In these cases, wires with a diameter of more than d n should be used.

If wires or rollers of preferred diameters are absent or cannot be used, then for each specific case of measurements, the dimensions of wires and rollers can be selected from those given in Appendix 2.

In this case, the selected diameter of the wire or roller must be equal to or less than d D and more

d D, and the measurement results must be corrected.

APPENDIX 2 Reference

SUMMARY TABLE OF NOMINAL DIAMETERS OF WIRES AND ROLLERS FOR MEASURING THE AVERAGE DIAMETER OF EXTERNAL THREADS

Table 6

APPENDIX 3 Reference

FORMULAS FOR CALCULATION OF WIRE AND ROLLER DIAMETERS

Table 7

Determined diameter of wires and rollers	Thread type
Determined diameter of wires and rollers	metric; unified (inch) a = 60 °	trapezoidal a = 30 °	tubular cylindrical and conical; inch axis = 55 °	thrust axis = 33 ° P = 30 ° 7 = 3 °

Note. For trapezoidal threads with 1.5 pitches; 2 and 3 mm, the c / 0mas values given in tab. 7 do not coincide with the calculated ones. To reduce the nomenclature of wires, they have been replaced by the nearest preferred metric threads.

Measuring wires and rollers

Measuring wires are designed to measure the average diameter of the external thread, as well as to measure the thickness of the teeth and the width of the grooves of spline shafts and bushings with an involute profile.

The design of the wires makes it possible to use them with devices for hanging or mounting on the device. Measuring wires are made with a diameter of 0.118 to 4.773 mm and are supplied in plastic cases in sets of three wires attached to special tags. According to the manufacturing accuracy, they are divided into two classes: class 0, class. The rollers are manufactured in diameters from 5,176 to 26,231 mm, also in two accuracy classes and are supplied in sets of three rollers in a cardboard box.

Control and measuring devices (KIP) are equipment without which it is impossible to imagine modern production today. Measurements are required at every stage of production and in a wide variety of industrial areas. Therefore, the measuring instruments are so diverse, these are GOST 2475-88 measurement wires, micrometers, mixer, calibration and curvature rulers, pedometers, protractors, thickness gauges, hardness testers, microscopes, calipers, etc.

Buy Wire for measuring GOST 2475-88 with delivery across Russia

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INTERSTATE STANDARD

WIRE AND ROLLERS

TECHNICAL CONDITIONS

Official edition

IPK PUBLISHING STANDARDS Moscow

INTERSTATE STANDARD

WIRE AND ROLLERS Specifications

Wires and rolls. Specifications

ISS 17.040.30 OKP 39 3130

Introduction date 01.01.90

1. TYPES, BASIC DIMENSIONS AND TOLERANCES

1.1. Wires and rollers should be of the following types:

I - smooth wires (Fig. 1);

II - step wires (Fig. 2);

III - rollers (Fig. 3).

d "in - d D> 0.01 mm

Crap. 1 Damn. 2

Note. A - the working surface of the wire of type I should be located in the middle of the wire at the length L t.

d n - d> 0.4 mm

1.2. Nominal diameters of wires and rollers d D for measuring the average diameter of the external thread, depending on the pitch, are given in table. 1 and 2.

Official edition Reprinting prohibited

For each specific type of thread and pitch, the d D values given in table. 1-3 are preferred for use.

It is allowed to use wires and rollers of other diameters within the values of d D;

dn, choosing them from among the preferred ones.

Thread type and profile angle
metric a = 60 °	trapezoidal a = 30 °	persistent a =	33 °, p = 30 °, 3 °

Continuation of table. one

Dimensions in mm

Thread type and profile angle
metric a = 60 °	trapezoidal a = 30 °	persistent a =	33 °, p = 30 °, 3 °

Note. For trapezoidal and thrust threads, the d D values are not given, since the wires

and rollers of these dimensions will be located below the outer diameter of the controlled profile.

Number of steps on a length of 24.5 mm	Thread type and profile angle
	unified (inch) a = 60 °	tubular cylindrical and conical a = 55 °, inch a = 55 °

Dimensions in mm

1.4. Summary table of nominal diameters d D of wires and rollers for measurement

the average diameter of the external thread is given in Appendix 2.

1.5. Formulas for calculating the diameters of wires and rollers for measuring the average diameter of an external thread are given in Appendix 3.

1.6. The nominal diameters of wires and rollers d D for measuring the parameters of spline joints with an involute profile are given in table. 3.