This standard specifies the items, given methods and tolerance values ​​of cone tolerances. This standard applies to smooth cones with taper C ranging from 1:3 to 1:500 and cone length L ranging from 6 to 630 mm. The cone angle tolerance in this standard also applies to the angle and slope of prisms. GB 11334-1989 Cone tolerance GB11334-1989 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Cone tolerance
Cone tolerance
GB 11334--89
This standard is equivalent to the international standard ISO1947--1973 "Cone tolerance system for cone workpieces with taper C from 1:3 to 1:500 and length L from 6 to 630mm".
Subject content and applicable scope
This standard specifies the items, given methods and tolerance values ​​of cone tolerance. This standard is applicable to smooth cones with taper C from 1*3 to 1:500 and cone length L from 6 to 630mm. The cone angle tolerance in this standard is also applicable to the angle and slope of prisms. 2 Reference standards
GB 157 Taper and cone angle series
GB 1184
Form and position tolerances Specifications of tolerances and fits without tolerances General introduction to standard tolerances and basic deviations GB 1800
GB 4096 Angle and slope series of prisms, GB4112~4116 Unit conversion table
3 Terms and definitions
Basic cone
Basic cone
Design a given cone (Figure 1),
Basic cone can be determined in two forms:
One basic cone diameter (maximum cone diameter D, minimum cone diameter d, given section cone diameter d), basic cone length L, basic cone angle α or basic cone Cb. Two basic cone diameters and basic cone length L. Figure 1
Approved by the State Administration of Technical Supervision on April 21, 1989 and implemented on January 1, 1990
Actual coneactual cone
A cone that actually exists and is obtained through measurement. GB 11334-89
Actual cone diameterdaactual conediameter3.3
The diameter measured on the actual cone (Figure 2). Actual cone angleactualconeangle
The angle between two pairs of parallel straight lines that contain the cone element line and have the smallest distance in any axial section of the actual cone (Figure 3). Element line of the cone
3.5 Limit conelimit cone
Actual cone angle
Two cones that are coaxial with the basic cone and have the same cone angle, and whose diameters are the maximum limit size and the minimum limit size respectively. On any section perpendicular to the cone axis, the diameter difference of the two cones is equal (Figure 4). 28#
Limit cone
GB11334-89
Cone diameter tolerance zone
3.6Limit cone diameter limit cone diameterThe diameter on the section perpendicular to the axis of the limit cone. For example, Dmax, Dmin, dmax, dmin in Figure 4. 3.7
Limit cone angle limit cone angle
The maximum or minimum cone angle allowed (Figure 5)Cone angle tolerance zone
Cone diameter tolerance Tp cone diameter tolerance3.8
The allowable variation of cone diameter (Figure 4). It applies to the entire length of the cone. Cone diameter tolerance zonecone.diameter tolerance zone3.9
The area defined by the two limit cones. When the cone diameter tolerance zone in the axial section is represented by a schematic diagram, it is shown in Figure 4. Cone angle tolerance AT (AT or ATD)
cone angle tolerance.
The allowable variation of the cone angle (Figure 5).
The area bounded by the two extreme cone angles. When the cone angle tolerance zone is represented by a schematic diagram, it is shown in Figure 5. Cone diameter tolerance Tns for a given section cone section 3.12
The allowable variation of the cone diameter in a given section perpendicular to the cone axis (Figure 6). It is only applicable to the given section. 287
GB 11334—89
Cone diameter tolerance zone for a given section
3.13Cone diameter tolerance zone for a given section
Cone section diameter tolerance zone The area bounded by two concentric circles in a given conical section. When the cone diameter tolerance zone for a given section cone is represented by a schematic diagram, it is shown in Figure 6.
、Items and given methods of cone tolerances
4.1 Items of cone tolerances
Cone diameter tolerance TD
b. Cone angle tolerance AT, given by angle value AT. Or line value ATD; cone shape tolerance TF, including element line straightness tolerance and section roundness tolerance; c.
Given section cone diameter tolerance TDs.
4.2 Given methods of cone tolerances
a. Give the theoretically correct cone angle α (or taper C) and cone diameter tolerance TD of the cone. Determine the two limit cones by Tp. At this time, the cone angle error and cone shape error should be within the area defined by the limit cones. When there are higher requirements for the cone angle tolerance and cone shape tolerance, the cone angle tolerance AT and cone shape tolerance TF can be given. At this time, AT and Tε only account for a part of Tn. b. The cone diameter tolerance Trs and cone angle tolerance AT of a given section are given. At this time, the cone diameter and cone angle of a given section should meet the requirements of these two tolerances respectively. The relationship between Tps and AT is shown in Figure 7. This method is given under the assumption that the cone element line is an ideal straight line. When there are higher requirements for the cone shape tolerance, the cone shape tolerance TATa/2 can be given
Given section
5 Cone tolerance value
GB 11334—89
5.1 Cone diameter tolerance TD
Cone diameter tolerance Tp, with the basic cone diameter (generally the maximum cone diameter D) as the basic size, is selected according to the standard tolerance specified in GB1800.
5.2 Cone diameter tolerance TDS of a given section
Given section cone diameter tolerance TDS, with the given section cone diameter dx as the basic size, is selected according to the standard tolerance specified in GB1800.
5.3 Cone angle tolerance AT
5.3.1 Cone angle tolerance AT is divided into 12 tolerance grades, represented by AT1, AT2, and AT12. The values ​​of cone angle tolerance are shown in Table 1.
When the values ​​in Table 1 are used for the angle of a prism, the tolerance value is selected with the length of the short side of the angle as L. If a higher or lower grade of cone angle tolerance is required, it can be obtained by extending it to both ends according to the common ratio of 1.6. Higher grades are represented by AT0, AT01, and .·, and lower grades are represented by AT13 and AT14. 5.3.2 Cone angle tolerance can be expressed in two forms: a. AT. — expressed in angle units of microradians or degrees, minutes, and seconds, b. ATp — expressed in length units of micrometers. The relationship between AT. and ATp is as follows:
AT=AT×L×103
Where: AT is in μm,
AT. The unit is μrad,
L unit is mm
ATp value should be calculated according to the above formula, and only the ATp range value corresponding to the size segment of the cone length L is given in the table. The mantissa of the ATp calculation result shall be rounded according to the provisions of GB 4112~4116, and its significant digits shall be the same as the digits of the maximum range value of the L size segment listed in the table.
5.3.3 Examples of ATp values ​​in the table:
Example 1: L is 63mm, AT7 is selected, and AT is obtained by looking up the table. It is 315μ.rad or 105\, and ATp is 20μm. Example 2: L is 50 mm, AT7 is selected, and the table shows that AT is 315 μrad or 105”, then: ATD = AT. × L × 10-3
= 315 × 50 × 10 -3
Take AT as 15.8 μma
5.4 Limit deviation of cone angle
The limit deviation of cone angle can be taken as unidirectional or bidirectional (symmetrical or asymmetrical) (Figure 8). 289
5.5 Shape tolerance of cone
GB 11334—89
atAT/2
The shape tolerance of the cone is recommended to be selected according to the "Regulations for Tolerance Values ​​on Drawings" in the Appendix of GB1184. Table
Cone Angle Tolerance Value
Difference Grade
Cone Angle Tolerance
Basic μ Cone Length
>0.8 ~1.3
>2.0 ~3.2
>0.8 ~1.3
>1.6 ~2.5
>2.0 ~3.2
>6.3 ~10.0
Basic brain cone length
Basic cone length
GB11834—89
Continued Table 1
Cone angle tolerance grade
>1.3 ~2.0
>2.0～3.2
>4.0 ~6.3
>6.3 ~10. 0
>8.0 ~ 12.5
>10.0~16.0
μrad((t\)
μ rad k')(\)
2'45″
[1'43*
>8.0~12.5
>12.5~20.0
>16.0 ~25.0
>20.0 ~32.0
>25.0 ~40.0
>32.0 ~50.0
>40.0 ~ 63.0
>2.0 ~3.2
>4.0 ~6.3
>6.3~10.0
>8.0 ~12.5
>10.0~16.0
>12.5 ~20.0
>16.0 ~25.0
μrad ()(\)bZxz.net
4°18″
2’45”
>8.0~12.5
>10.0~16.0
>12.5~20.0
>20.0~32.0
>25.0~40.0
>32.0 ~50.0
>40.0~63.0
>50.0~80.0
μradle)(\)
143″
>6.3~10.0
>8.0 ~12.5
>10.0~16.0
>12.5~20.0
>16.0 ~25.0
>20.0 ~32.0
>25.0 ~40.0
μ rad()(\)
2 000|6\52\
1600|530\
12504'18”
8002'45\
[2'10”
500|1'43\
[1'22”
>63.0~100.0
>16～25
>20 ~ 32
>25 ~ 40
>32~50
>40 ~ 63
> 50 ~80
≥ 63 ~100
>80~125
>100~160
Basic cone length
μred k')(*)
3150|1049\
25008'35
6°52”
10003'26\
400|1'22”
GB1 1334--89
Continued Table 1
Conical angle tolerance grade
>20～32
>25～40
>32～50
>40~63
>50 ~80
>63~100
>80~125
>100~160
>125 ~200
>160 ~250
3'26°
630|2'10
>32~50
>40~63
>50~80
>63~100
>80 ~125
>100～160
>125~200
>160~250
>200～320
>250～400
μrad (o(\)
27'28\
21'38\
17°10m
13°44″
10°49″
4°18″
3’26″
>50 ~ 80 | 500
>400~630
Note: lμrad is equal to the central angle corresponding to a radius of 1m and an arc length of 1μm. 5,urad~1" (second) 300μrad~1' (minute). 292
GB 11$84-89
Appendix A
Maximum cone angle error that can be limited by cone diameter tolerance (reference part)
This appendix gives the maximum cone angle error Aαmax that can be limited by cone diameter tolerance Tp when the cone length L is 100mm according to the method specified in Article 4.2 a of the standard.
Cone diameter, mm
Read cone diameter
Tolerance grade
IT ９
12 000
>10 ～ 18
>18~30
Aαmax, μrad
15 000
22 000
18 000
27 000
>30 ~ 50
10:000
25 000
39 000
>50~80
19 000
46 000
Cone diameter
Tolerance grade
>80~120
22 000
35 000
54 000
GB11334--89
Continued Table A1
Cone diameter, mm
>120~180
10 :000
25 000
>180 ~250
>250 ~315
Aa max, μ rad
29 000
46 000
21 000
32 000
>315 ~ 400
23 000
36 000
57 000
89 000
Note: When the cone length is not equal to 100mm, multiply the value in the table by 100/L, where L is in mm. 291
>400500
25 000
97 000
GB11334--89
Appendix B
Marking when the cone tolerance is given in accordance with Article 4.2a of this standard (reference part)
When the cone tolerance is given in accordance with Article 4.2a of this standardWhen the method specified in Article 2a is given, it is recommended to mark the "①" symbol after the limit deviation of the cone diameter. 50+ g-039①
Note. If the marking method of cone tolerance is replaced by the corresponding national standard, it does not need to be marked according to this appendix. Additional remarks:
This standard is proposed by the National Technical Committee for Standardization of Tolerances and Fits. This standard is under the jurisdiction of the Mechanical Standardization Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Mechanical Standardization Research Institute of the Ministry of Machinery and Electronics Industry, Shaanxi Provincial Bureau of Standards, Harbin Institute of Technology, Xi'an Petroleum Institute and other units.
The main drafters of this standard are Yu Hanqing, Li Xiaopei, Wu Jingxiang, Gao Yanxin and Chen Daxiu. 293
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