Some standard content:
National Standard of the People's Republic of China
Ceramic indexable inserts, dimensions of inserts with holes Indexable inserts for cutting tools--Ceramic inserts with rounded corners--Dimensions of inserts with cylindrical fixing hole GB/T 15306. 2--94
This standard is equivalent to the international standard ISO9361/2-1991 "Indexable inserts for cutting tools--Ceramic indexable inserts with rounded corners Part 2 Dimensions of inserts with cylindrical fixing holes". 1 Subject content and scope of application
This standard specifies the dimensions of indexable inserts made of ceramic cutting materials with rounded corners, cylindrical fixing holes, normal back angle of 0°, accuracy of G and M grades. These inserts are mainly clamped on turning tools and boring tool arbors through the top and the hole, or only through the hole. This standard is applicable to G and M grade indexable inserts with holes made of various ceramic cutting materials. Ceramic cutting materials are composed of various oxides, nitrides, carbides and metals. For example, such ceramic materials include oxide ceramics (mainly composed of aluminum oxide AI2), oxide-carbide ceramics (mainly composed of aluminum oxide and other materials such as titanium carbide TiC), and nitride ceramics (generally composed of silicon nitride SiN. and other materials such as yttrium oxide Y, and aluminum oxide). 2 Reference standards
GB/T2076 Rules for indicating the model of indexable inserts for cutting tools GB/T15306.4 Technical conditions for ceramic indexable inserts 3 Types of inserts
The types of ceramic indexable inserts specified in this standard are as follows: TN: regular triangle insert with a normal clearance angle of 0°; SN: square insert with a normal clearance angle of 0°; CN: rhombus insert with a normal clearance angle of 0° and a tip angle of 80°; DN: rhombus insert with a normal clearance angle of 0° and a sharp tip angle of 55°; RN: round moon insert with a normal clearance angle of 0°. The inserts specified in this standard have no chip breakers. · Ceramic blades with chamfered cutting edges or rounded cutting edges should generally be used, see Chapter 6. Appendix C (Supplement) Table C1 gives the size range of the inserts. 4 Allowable deviations
The ceramic indexable inserts specified in this standard are supplied according to the G and M grade accuracy specified in GB/T2076. The allowable deviations specified in GB/T2076 are estimated in Appendix A Table A1, and other tolerances are listed in Tables 3 to 7. 5 Fixing holes
In order to ensure the interchangeability of the insert installation, the diameter of the fixing hole is selected according to the diameter of the inscribed circle of the insert, and its size is as shown in the table! ：Approved by the State Administration of Technical Supervision on December 20, 1994, and implemented on September 1, 1995
d:±0. 08
6 Cutting edge
6.7 Cutting edge cross-sectional shape
GB/T15306.2--94
Specified hole size
The cutting edge cross-sectional shape of the ceramic indexable insert specified in this standard can be selected from those specified in GB/T2076, or K or P type can be selected.
6.2 Additional information
The size of the chamfered cutting edge TS, K or P can be specified in the product sample of the manufacturer, and placed as an additional symbol after the letter symbol indicating the cutting edge cross-sectional shape. If such additional information is specified, its additional symbol should consist of 5 digits, the first three digits representing the value of b in units of 0.01rnm; the last two digits representing the value of b in units of degrees. See Figure 1. Note 1: When the main cutting edge cross-section is K and P, the chamfer b and the chamfer rake angle % (as shown in Figure 2) are determined by the manufacturer. It is not part of the additional information (5 digits) specified in Article 6.2. Example: The parameter of the chamfer cutting edge T on the
TNGA160412 insert is: b.0.2mm
——20°
Its code and additional symbol are:
TNGA160412T02020
The code of the ceramic indexable force insert recommended in accordance with this standard should be consistent with GB/T2076. In addition to the codes specified in (B/T2076), one or two of the following may be attached: a
Additional symbols for the cross-sectional shape and size of the cutting edge, as per Article 6.2; Commercial brand of ceramics.
8 Measurement
GB/T15306.2-94
Appendix B (Supplement) specifies the measurement method for the size m of ceramic indexable inserts included in this standard. 9 Recommended size
The selection of commonly used sizes is limited to the specifications listed in Tables 3 to 7. It is strongly recommended that These standard blades may all be used (first priority). When other blades are needed, the blade size should be selected from the non-shaded part in Table (1) (second priority). The blades represented by the shaded part of Table C1 are not recommended. Note 2: The dimension m is calculated using the actual value of the tool tip radius. When calculating, round to three decimal places. The calculated value of r is shown in Table 2. Table 2 Calculation of r when calculating dimension m
r, code
r. Calculation value, mm
9.1 Angle-shaped blade
TNGA 160404
TNGA 160108
TNGA 160412
TNGA 160416
INGA 220608
TNGA 220612
I'NMA 220616
TNMA 220620
Table 3 equilateral triangle blade ruler small
TNMA 160404
TNMA 160408
TNMA 160412
TNMA 160416
TNMA 220608
TNMA 220612
TNMA 220616
TNMA 220620
Note: The allowable deviations of d, s, and m are in accordance with GB/T2076. See Appendix A. 9.2 square blade
SNGA 120404
SNGA 120408
SNGA 120412
SNGA 120416
SNGA 120608
SNGA 120612
SNGA 120616
SNGA 120620
SNGA 150612
SNGA150616
SNGA150620
SNMA 120404
SNMA 120408
SNMA 120412
SNMA 120416
SNMA 120608
SNMA 120612
SNMA 120616
SNMA 120620
SNMA 150612
SNMA 150616
SNMA 150620
GB/T15306.2---94
Table 4 Dimensions of square blades
Note: ds, the allowable deviation of the machine shall be in accordance with GB/T2076, see Appendix A. 9.3 Diamond blade with a tip angle of 80°
CNGA 120404
CNGA 120408
CNGA 120412
CNGA 120416
CNGA 120608
CNGA 120612
CNGA 120616
CNGA120620
CNGA 160612
NGA 160616
CNGA 160620
GB/T15306.2-94
Table 5 Dimensions a of diamond blade with a tip angle of 80°
CNMA 120404
CNMA 120408
CNMA 120412
CNMA 120416
CNMA120608
CNMA 120612
CNMA 120616
CNMA120620
CNMA 160612
CNMA 160616
GNMA 120620
Note: 5. The allowable deviation of m shall be in accordance with GB/T 2076, see Appendix A. 9.4 Diamond blade with a tip angle of 55°
Table 6 Dimensions of diamond blade with a tip angle of 55°
DNGA 150408
DNGA 150412
DNGA 150416
DNGA 150608
DNGA 150612
DNGA 150616
DNGA150620
DNMA150408
DNMA 150412
DNMA 150416
DNMA 150608
DNMA 150612
DNMA 150616
DNMA 150620
Note: The allowable deviations of d, 5 and m are in accordance with GB/T2076, see Appendix A. 9.5 Circular blades
RNGN 120400
RNGN 150600
RNGN 190600
RNMA 120400
RNMA 150600
RNMA 190600
GB/T 15306. .---94
Note: The allowable deviations of d, s and m are in accordance with GB/T2076, and are shown in Appendix A10 Marking Examples
Circular blade dimensions
Ceramic indexable inserts with brand AB05, code and additional symbol TNGA160412T02020: Ceramic inserts TNGA160412T02020GB/T15306.2
71 Technical conditions
The technical conditions for ceramic indexable inserts shall comply with the provisions of GB/T15306.4. so6
TN.A 22.-
CN.A 12. .
DN. A 15.
SN.A 15. .
CN.A 16.
RN.A 15..
B1 Equilateral triangle blade
GB/T15306.2--94
Appendix A
Tolerances of dimensions dmm, m and s (from GB/2076) (supplement)
Table Ai Tolerances of dimensions d, mm, m and s
G grade blade tolerances
Appendix B
M grade blade tolerances
W mten:
Method for measuring blade size m
(Supplement)
The size m is the distance from the tip of the blade to the opposite side. Place the blade on the plane shown in Figure 31 and calibrate the dial indicator to zero using a standard glass block. When measuring the blade, the deviation can be read directly on the dial indicator. Figure B]
B2 Square blade
The size m of a square blade is measured with the help of the diameter of a reference cylinder, the diameter of which is the same as the inner diameter of the blade. As shown in Figure B2, place the blade on a 90° V-shaped block. Before measuring, place the reference cylinder on a 90° V-shaped block! . On a block with the same size as the basic size m, calibrate the dial indicator to zero. When measuring the blade, the deviation can be read directly on the dial indicator.
B3 Diamond blade
GB/T15306.294
The m dimension of diamond blade is measured with the help of the diameter of the reference cylinder, which is the same as the diameter of the blade's inscribed circle. As shown in Figure B3, place the blade on a 55°80° or 100° V-block. Before measuring, cover the reference cylinder on the 55°80° or 10° V-block, and then add a block gauge with the same size as the basic size of m on it, and calibrate the dry scale to zero! When measuring the moon piece, the deviation can be directly read on the scale.
B4 Circular blade
The diameter d is measured with a sub-scale or similar instrument. 508
TNGA 1604
TNGA 2204
TNGA 2206
SNGA 1204
SNGA 1206
SNGA 1506
CNGA 1906
CNGA 1206
CNGA 1G06
19.05CNGA1906
DNGA 1504
DNGA 1506
GB/T15306.294
Appendix C
Shapes included in this standard for tool nose rounding, size range with cylindrical fixing hole (supplement)
Table C1 Size range
RNGN 120400
RNGN 150600
15-875
RNGN 190600
Tool nose arc radius r.
TNMA 1604
TNMA 2204
TNMA 2206
SNMA 1204
SNMA 1206
SNMA 1506
SNMA 1906
CNMA 1204
CNMA 1206
CNMA 1606
CNMA 1904
DNMA 1504
DAmA 1506
RNMA 120400wwW.bzxz.Net
RNMA150600
RNMA190600
First preferred blade, the blade covered by this standard (see Tables 3 to 7). Non-shaded area: The second preferred blade, this standard does not include these blades. Shaded area: Blades that are not recommended.
Additional remarks:
This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard was drafted by the National Tool Standardization Technical Committee! ! . This standard was issued by the Chengdu Tool Research Institute of the Ministry of Machinery Industry. The main drafters of this standard are Zha Guoying, Xu Zude, Shen Ang, and Li Yiting.
The tip arc is semi-circular,
Method for measuring blade size m
(Supplement)
Dimension m is the distance from the measured blade tip to the opposite edge. Place the force plate on the plane shown in Figure 31 and calibrate the micrometer to the zero position using a glass block gauge. When the measuring blade is attached, the deviation can be read directly on the dry scale. Fig. B]
B2 Square blade
The square blade size is measured with the aid of the diameter of a reference cylinder, the diameter of which is the same as the inner diameter of the blade. As shown in Figure B2, place the blade on the 90° V-block. Place the reference cylinder on the 90° V-block before measuring! . On a block gauge with the same basic size of 1 and m, calibrate the micrometer to zero. When measuring the blade, you can use the micrometer to measure the full drawing error.
B3 diamond blade
GB/T15306.294
The m dimension of the diamond blade is measured with the help of the diameter of the reference cylinder. Is the diameter of the cylinder the same as the size of the blade's inscribed circle? same. As shown in Figure B3, place the blade on a V-block of 55°80° or 100°. Before measuring, cover the reference cylinder on the V-block of 55°80° or 10, and then add a block gauge with the same size as the basic size of m on it, and calibrate the dry meter to zero! . When measuring the moon film, the deviation can be read directly on the scale.
B4 round blade
The diameter d is measured with a sub-ruler or similar instrument. 508
TNGA 1604
TNGA 2204
TNGA 2206
SNGA 1204
SNGA 1206
SNGA 1506
SNGA 1906
CNGA 1204
CNGA 1206| |tt||CNGA 1G06
19.05CNGA1906
DNGA 1504
DNGA 1506
GB/T15306.294
Appendix C
Shapes include the size range of the knife tips in this standard with rounded cylindrical fixed holes ( Supplement)
Table C1 foot medium range
RNGN 120400
RNGN 150600
15-875
RNGN 190600
Tip arc radius r.
TNMA 1604
TNMA 2204
TNMA 2206
SNMA 1204
SNMA 1206
SNMA 1506
SNMA 1906
CNMA 1204
CNMA 1206
CNMA 1606
CNMA 1904
DNMA 1504
DAmA 1506
RNMA 120400
RNMA150600
RNMA190600
First preferred blade, the blade covered by this standard (see Tables 3 to 7). Unshaded area: Second preferred blade, these blades are not included in this standard. Yin part: Sichuan slices are not recommended.
Additional Notes:
This standard is proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard is under the jurisdiction of the National Tool Standardization Technical Committee! ! . This standard was issued by Chengdu Tool Research Institute of Ministry of Machinery Industry. The main drafters of this standard are Zha Guoying, Xu Zude, Shen Ang and Li Yiting. Level
Half arc of the tip,
Method for measuring blade size m
(Supplement)
Dimension m is the distance from the measured blade tip to the opposite edge. Place the force plate on the plane shown in Figure 31 and calibrate the micrometer to the zero position using a glass block gauge. When the measuring blade is attached, the deviation can be read directly on the dry scale. Fig. B]
B2 Square blade
The square blade size is measured with the aid of the diameter of a reference cylinder, the diameter of which is the same as the inner diameter of the blade. As shown in Figure B2, place the blade on the 90° V-block. Place the reference cylinder on the 90° V-block before measuring! . On a block gauge with the same basic size of 1 and m, calibrate the micrometer to zero. When measuring the blade, you can use the micrometer to measure the full drawing error.
B3 diamond blade
GB/T15306.294
The m dimension of the diamond blade is measured with the help of the diameter of the reference cylinder. Is the diameter of the cylinder the same as the size of the blade's inscribed circle? same. As shown in Figure B3, place the blade on a V-block of 55°80° or 100°. Before measuring, cover the reference cylinder on the V-block of 55°80° or 10, and then add a block gauge with the same size as the basic size of m on it, and calibrate the dry meter to zero! . When measuring the moon film, the deviation can be read directly on the scale.
B4 round blade
The diameter d is measured with a sub-ruler or similar instrument. 508
TNGA 1604
TNGA 2204
TNGA 2206
SNGA 1204
SNGA 1206
SNGA 1506
SNGA 1906
CNGA 1204
CNGA 1206| |tt||CNGA 1G06
19.05CNGA1906
DNGA 1504
DNGA 1506
GB/T15306.294
Appendix C
Shapes include the size range of the knife tips in this standard with rounded cylindrical fixed holes ( Supplement)
Table C1 foot medium range
RNGN 120400
RNGN 150600
15-875
RNGN 190600
Tip arc radius r.
TNMA 1604
TNMA 2204
TNMA 2206
SNMA 1204
SNMA 1206
SNMA 1506
SNMA 1906
CNMA 1204
CNMA 1206
CNMA 1606
CNMA 1904
DNMA 1504
DAmA 1506
RNMA 120400
RNMA150600
RNMA190600
First preferred blade, the blade covered by this standard (see Tables 3 to 7). Unshaded area: Second preferred blade, these blades are not included in this standard. Yin part: Sichuan slices are not recommended.
Additional notes:
This standard is proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard is under the jurisdiction of the National Tool Standardization Technical Committee! ! . This standard was issued by Chengdu Tool Research Institute of Ministry of Machinery Industry. The main drafters of this standard are Zha Guoying, Xu Zude, Shen Ang and Li Yiting. Level
Half arc of the tip,
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