GOST 19086-80

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  ГОСТ 19086-80

GOST 19086−80 Plate changeable polyhedral carbide. Technical specifications (with Changes 1−6 N)

GOST 19086−80

Group 56

INTERSTATE STANDARD

PLATE POLYHEDRAL CARBIDE REPLACEABLE

Specifications

Throw-away (indexable) carbide inserts. Specifications

ISS 25.100
77.160
OKP 19 6000

Date of introduction 1982−01−01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of nonferrous metallurgy of the USSR

2. APPROVED AND put INTO EFFECT by Decision of the USSR State Committee for standards from 19.06.80 N 2913

3. REPLACE GOST 19086−73

4. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

5. Limitation of actions taken by Protocol No. 7−95 Interstate Council for standardization, Metrology and certification (ICS 11−95)

6. EDITION Changes N 1, 2, 3, 4, 5, 6, approved in October 1984, July 1986, November 1986, July 1987, April 1989, December 1990 (IUS 2−85, 10−86, 2−87, 12−87, 7−89, 4−91)


This standard applies to cutting, the base plate and struzhkolomy.

The standard requirements in part of sec. 1, 2, 4, 5 are compulsory.

(Changed edition, Rev. N 1, 2, 6).

1. THE DESIGN AND DIMENSIONS

1.1. The design and dimensions of plates according to GOST 19042 — 19053 GOST, GOST 19056, 19057 GOST, GOST 19059, 19061 GOST — GOST 19065, 19067 GOST — GOST 19081, 19083 GOST — GOST 19086, 24247 GOST — GOST 24257, 25403 GOST, GOST 25418.

(Changed edition, Rev. N 6).

2. TECHNICAL REQUIREMENTS

2.1. Material of inserts:

cutting — hard alloy VK6 brands, VK6-OM, VK8, ВК10 HOM, ТТ20К9, ТТ7К12, ТТ8К6, ТТ10К8Б, Т5К10, Т14К8, and Т30К4 T15K6 GOST 3882, the solid alloy grades КНТ16* and ТН20 and hard alloy of the marks with wear-resistant coating according to technical documentation approved in the established procedure;

support — solid alloy grade according to GOST ВК15 3882;

chip breakers — carbide brand VK8 in GOST 3882.
________________
* Plates made of the hard alloy brand КНТ16 produce only class of permit U.

Microstructure, macrostructure and cutting properties — according to GOST 4872 or according to normative-technical documentation.

(Changed edition, Rev. N 1, 6).

2.2. Inserts must be manufactured to the tolerance classes according to GOST 19042 depending on the plates. Class tolerance specified in the standards for the design and size of plates.

(Changed edition, Rev. N 4).

2.3. All plates with a chip breaking C-grooves and raw, ribbons, in addition to plates of solid alloy grade Т30К4, are vibroabrasive treatment. The customer is allowed to expose the plate vibroabrasive treatment.

The radius of rounding of cutting edges needs to match what is specified in the table.1.

Table 1

2.4. At the request of the consumer inserts are manufactured with extra treatment on the cutting edges:

rounding of cutting edges;

with a reinforcing chamfer;

with a reinforcing chamfer and rounding the cutting edges.

2.3, 2.4 (Revised edition, Edit. N 6)

2.4.1. The radius of rounding of cutting edges is specified in table.2A.

Table 2A

2.4.2. The dimensions of the reinforcing chamfer (width ofangle) shall be as specified in table.2B.

Table 2B

2.4.1, 2.4.2. (Added, Rev. N 6).

2.5. Limit deviations of linear and angular sizes of cutting, backing plates and chip breakers shall conform to the values specified in table.3.

Table 3

Dimensions, mm

________________
* Size specifies the nominal position of the top of the plates, and the maximum deviations in size are extreme deviations from the nominal position of the top plate.

** For plates with a chip breaking C-grooves and polished ribbons.

*** Limit deviation of the radius can only be used to the extent that will produce the size within the tolerance.

(Changed edition, Rev. N 4, 5).

2.6. Unspecified limit deviations of linear dimensions up to 1 mm must not be more than ±0.15 mm; over 1 mm .

2.7. Unspecified limit deviations of angular dimensions AT 16.

2.8. Maximum deviations of form and position of surfaces shall conform to the values specified in table.4.

Table 4

Dimensions, mm

(Changed edition, Rev. N 4, 5).

2.9. Chipping on the cutting edges of the plates are classified according to grade of tolerance in the amount and location of the cutting edge.

2.9.1. The area of the fractures indicated on the devil.1:

 — the radius or chamfer at the vertex; is on the cutting edge; on the middle part
cutting edge, equal , forms rhombic and parallelogram —
half of the edge length from the off

Damn.1

2.9.2. The values of pitting on the cutting edges of the inserts without chip breaking C-grooves and pressed or polished chip breaking C-grooves should not exceed the values given in table.5, and the devil.1A.

Damn.1A

2.9.3. The total number of fractures on all cutting edges of a unilateral plate and on each side of the bilateral plates should not be more than three. One of them is allowed chipping on one of the radius or chamfer at the vertex in accordance with the table.5.

Table 5

mm

On the outside of the cutting edges are allowed, the size of the fractures no more than 0.3 mm.

2.9.4. The radii of base plates, the working edge of the chip breakers dimensions of the fracture toughness () should not be more than 0,15х0,30 mm.

2.9.2 — 2.9.4. (Changed edition, Rev. N 4).

2.9.5. (Deleted, Rev. N 5).

2.9.6. The size of the burrs, or fractures, occur when chipping burrs, for plates with the extruded grooves and a chip breaking C-raw ribbons should not exceed the amount equal to 0,07 mm.

(Changed edition, Rev. N 4).

2.10. The roughness parameter of the surfaces of the plates according to GOST 2789 must comply with the specified in table.6.

Table 6

Note. Allowed grinding plates with a chip breaking C-grooves and clearance angles on the rear surfaces of width not less than 1.0 mm from the cutting edge.


Plates shall be subjected to the following processing depending on the class of tolerances:

all classes of tolerances — the front surface of the chip breaking C-geometry with extruded grooves of the plates of all grades of tolerances are not sanded. Allowed grinding plates with a chip breaking C-grooves on the ribbon;

U, M — polished at the base and front surfaces;

K — sanded for reference, the front surfaces and rear surfaces, the chamfer at the vertex;

G, E, C, A — polished for reference, the front and rear surfaces.

(Changed edition, Rev. N 1, 4).

2.11. On all plate surfaces should be free of blistering, delaminations, cracks, and surfaces also sticking.

(Changed edition, Rev. N 6).

2.12. (Deleted, Rev. N 5).

2.13. The terms and symbols given in Appendix 1.

2.14, 2.15. (Deleted, Rev. N 5).

2.16. The reliability of the plates (fixed and average periods of resistance and failure criteria) must conform to the normative-technical documentation for a cutting tool equipped with the appropriate many-sided plates from a firm alloy.

(Added, Rev. N 2).

2.17. On the supporting surface of each insert with a diameter of the inscribed circle over 6.35 mm needs to be applied electrochemically or paint grade hard alloy.

Inserts with a diameter of 6.35 mm and less, plates with a diameter of 12.7 mm and less and the hole, the base plate and struzhkolomy not mark.

2.18. Plate one brand of alloy, one party and one formulator placed in consumer packaging (in special plastic boxes with individual cells for each plate), 10 PCs.

Plate, the dimensions of which exceed 17х18х5 mm, allowed to wrap in cellophane according to GOST 7730 or other transparent polymer film in an amount up to 10 pieces is allowed to move the plates outward.

2.19. In the consumer container are put or fixed with a plastic tape with an adhesive layer or a paper tape with adhesive label with colored stripe red, blue or yellow, depending on the group’s application of the alloy according to Appendix 2.

The label must contain:

a) the name of the manufacturer;

b) carbide grade and sub-group application — attachment 2;

C) the batch number and date of issue;

g) marking plates (numeric or alphanumeric);

d) the designation of the standard design and dimensions.

2.20. In a Multipack invest passport, which must be specified:

the number of plates and their weight;

the results of the tests;

information according to claim 2.19.

2.21. Further requirements for packaging plates according to GOST 18088.

2.17−2.21. (Added, Rev. N 6).

3. ACCEPTANCE

3.1. To check the compliance plates requirements of this standard the manufacturer shall carry out acceptance inspection.

3.2. Control for compliance with the requirements of section 2.1 — according to GOST 20559.

3.3. Control for compliance with the requirements of paragraphs.2.9.2, 2.9.3, 2.9.6 and 2.11 — continuous.

3.4. Control for compliance with the requirements of paragraphs.2.3−2.8, 2.9.4, 2.10 — sampling according to GOST 18242*.
_______________
* On the territory of the Russian Federation GOST R 50779.71−99.

Plate on control made by the parties. The party should consist of two plates one formulator, one mark of a hard alloy, is manufactured in one technological process for a certain period of time and simultaneously presented for acceptance on the same document.

(Changed edition, Rev. N 5).

3.5. The method of selection of plates in the sample — random according to GOST 18321.

3.6. Defects in the plates are divided into critical, significant and insignificant.

Critical are the defects associated with violation of requirements specified in the PP.2.9.2, 2.9.3, 2.9.6 and 2.11.

Critical defects are not allowed.

3.7. Significant defects are associated with the violation of requirements specified in the PP.2.5 on the sizes , , , and 2.10.

Control plates for compliance with the requirements of PP.2.5 on the sizes , , , and 2.10 is carried out for each parameter separately.

The control plan must comply with the specified in table.6A.

Table 6A

________________
* If the sample volume is equal to or greater than the volume of the party, used total control.

3.8. The batch is accepted if the number of defective sheets in the sample does not exceed the acceptance number.

The party is rejected or subjected to continuous control if the number of defective wafers in the sample more than the acceptance number.

3.9. To include minor defects associated with violation of requirements specified in the PP.2.3, 2.4, 2.5 (except for the size , , , ), 2.6, 2.7, 2.8, 2.9.4.

Control should be performed on a set of parameters assigned to minor defects.

The control plan must comply with the specified in table.7a.

Table 7a

________________
* If the sample volume is equal to or greater than the volume of the party, used total control.


(Changed edition, Rev. N 5).

3.10. Batch of plates is accepted if the number of defects in the sample, the set of parameters does not exceed the acceptance number.

Batch of wafers must be rejected or subjected to continuous control if the number of defects in the sample, the set of parameters more than the acceptance number.

Batch of wafers must be rejected or subjected to continuous control according to the parameter if the deviation exceeds the limit by more than 50% of tolerance on at least one plate.

3.11. Defective plates are identified in the party, the last inspection should be replaced.

(Changed edition, Rev. N 4).

4. TEST METHODS

4.1. The test plates shall be conducted in accordance with the requirements of sec. 2 and 3.

4.2. Compliance plates the requirements of section 2.1 is determined according to GOST and GOST 3882 4872.

4.3. Methods to control defects and roughness of surfaces are given in table.7.

Table 7

Control of defects and surface roughness

(Changed edition, Rev. N 4).

4.4. Methods to control linear and angular dimensions of the plates are given in table.8.

Compliance plates requirements PP.2.6, is ensured by technologically 2.7 and control of the manufacturer is not subject.

Table 8

Dimension limit deviations of the dimensions and arrangement of surfaces

Notes:

1. The diameter of the inscribed circle and the size should be measured in a plane parallel to a reference. The deviation of the measurement planes from parallelism should not exceed 0.1 mm to 100 mm.

2. For plates without clearance angle the plane of the measurement should lie in the middle of the thickness of the plate for plates with a clearance angle of cutting edge should lie in the plane of measurement.


(Changed edition, Rev. N 5).

4.5. The dimensional and angular parameters of the chip breaking C-geometry of the pressed grooves are provided technologically.

4.6. Monitoring of parameters of cutting plates for compliance with the PP.2.5 and 2.10 subject to the vibrating processing, carried out until the specified operation.

4.7. Control of aperpendicular rear surfaces of the supporting plates to hold the straight sections of the rear surfaces.

4.8. Control the convexity of the rear surfaces of the plates to the rear corners should be in the middle of the rear surfaces.

4.9. The roughness of the ribbons chip breaking C-geometry of the grooves, and reinforcing negative chamfers on cutting edges is provided technologically.

4.10. The reliability of the replaceable multifaceted plates control the instrument, equipped with data plates. Inspection methods of reliability indices must conform to normative-technical documentation for the cutting tool.

(Added, Rev. N 2).

5. TRANSPORTATION AND STORAGE

5.1. Transportation and storage of plates according to GOST 18088.

Sec. 5. (Changed edition, Rev. N 6).

ANNEX 1 (reference). TERMS AND SYMBOLS

ANNEX 1
Reference

 — the angle of the front;  — back angle;  — the width of the chip breaking C-geometry of the groove;
 — the width of the chamfer cutting edge

 — the angle at the vertex, the radius; that is the width of the cutting edge,
auxiliary and transitional chamfer; ,  — the angles of arrangement of the facets in terms of

 — the radius of rounding of the cutting edge; the width of the reinforcing chamfer cutting edge

ANNEX 2 (informative). THE GROUP OF APPLICATION ALLOYS

ANNEX 2
Reference

________________
* Applies only when milling.


ANNEXES 1, 2. (Changed edition, Rev. N 1, 6).