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GB/T 37891.3-2019: Cutter arbors with parallel key and tenon drive -- Part 3: Dimensions and designation of tool holders with 7/24 taper for automatic tool changers
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Cutter arbors with parallel key and tenon drive -- Part 3: Dimensions and designation of tool holders with 7/24 taper for automatic tool changers
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GB/T 37891.3-2019
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Basic data | Standard ID | GB/T 37891.3-2019 (GB/T37891.3-2019) | | Description (Translated English) | Cutter arbors with parallel key and tenon drive -- Part 3: Dimensions and designation of tool holders with 7/24 taper for automatic tool changers | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J41 | | Classification of International Standard | 25.100.20 | | Word Count Estimation | 10,177 | | Date of Issue | 2019-08-30 | | Date of Implementation | 2020-03-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 37891.3-2019: Cutter arbors with parallel key and tenon drive -- Part 3: Dimensions and designation of tool holders with 7/24 taper for automatic tool changers
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Cutter arbors with parallel key and tenon drive - Part 3. Dimensions and designation of tool holders with 7/24 taper for automatic tool changers
ICS 25.100.20
J41
National Standards of People's Republic of China
Milling shank with flat key and end key drive
Part 3. Automatic tool change taper with 7.24
Tool bar size and marking
Part 3. Dimensionsanddesignationoftoolholderswith7/24taper
(ISO 10649-3.2013, MOD)
Published on.2019-08-30
2020-03-01 implementation
State market supervision and administration
China National Standardization Administration issued
Foreword
GB/T 37891 "Milling cutter with flat key and end key drive" is divided into 6 parts.
--- Part 1. General size;
--- Part 2. Dimensions and markings of hollow cone-shank shanks with flanged contact surfaces;
--- Part 3. Dimensions and markings with 7.24 automatic tool changer taper shank;
--- Part 4. Dimensions and markings with 7.24 manual tool changer taper shank;
--- Part 5. Dimensions and markings of multi-sided taper shank with flanged contact surfaces;
--- Part 6. Dimensions and markings of modular taper shank with steel ball tensioning system.
This part is the third part of GB/T 37891.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part uses the redrafting method to modify the ISO 10649-3.2013 milling cutter with flat key and end key drive. Part 3. Belt
7.24 automatic tool changer taper shank size and marking.
The technical differences between this part and ISO 10649-3.2013 and their reasons are as follows.
---About the normative reference documents, this section has made technical adjustments to adapt to China's technical conditions, adjustments
It is concentrated in Chapter 2, “Regulatory References”, and the specific adjustments are as follows.
● Replace ISO 2768-2 with GB/T 1184 equivalent to the international standard;
● Replace ISO 2768-1 with GB/T 1804 equivalent to the international standard;
● Replace ISO 7388-1 with GB/T 10944.1 equivalent to the international standard;
● Replace ISO 7388-2 with GB/T 10944.2 equivalent to the international standard;
● Replace ISO 2780 with GB/T 20329 equivalent to the international standard;
● Replace ISO 10649-1 with GB/T 37891.1 modified to adopt international standards;
● Replace ISO 10643 with GB/T 37895 modified to international standards.
--- According to the actual situation in the country, the drawing method of the bolts in Fig. 1 and Fig. 2 was modified.
This section has made the following editorial changes.
--- According to the actual situation, edited the table 2;
--- Removed references to international standards.
This part was proposed by the China Machinery Industry Federation.
This part is under the jurisdiction of the National Tool Standardization Technical Committee (SAC/TC91).
This section drafted by. Chengdu Tool Research Institute Co., Ltd., Sichuan Tianhu Tools Co., Ltd., Tyson Yingge (Chengdu) CNC knife
With a company limited by shares.
The main drafters of this section. Chen Wenlang, Liu Qianlun, Shen Shichang, Zhang Jingzhi, Xie Gang.
Milling shank with flat key and end key drive
Part 3. Automatic tool change taper with 7.24
Tool bar size and marking
1 Scope
This part of GB/T 37891 specifies the size and marking of the milling cutter with flat key and end key drive. The handle of the milling cutter is 7.24.
Change the taper shank.
This section applies to 7.24 automatic tool change cone shank milling cutter with flat key and end key drive.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 1184 Shape and position tolerances without tolerance values (GB/T 1184-1996, eqvISO 2768-2. 1989)
GB/T 1804 General tolerances No tolerances for linear and angular dimensions (GB/T 1804-2000, eqvISO 2768-1.
1989)
GB/T 10944.1 Automatic tool change 7.24 taper tool holders Part 1. Sizes for A, A, AD, U, UD and UF
Mark (GB/T 10944.1-2013, ISO 7388-1.2007, IDT)
GB/T 10944.2 Automatic tool change 7.24 conical tool holders Part 2. Dimensions and specifications for J, JD and JF type handles
(GB/T 10944.2-2013, ISO 7388-2.2007, IDT)
GB/T 20329 end-key transmission milling cutter and cutter cutter bar interchangeable size (GB/T 20329-2006, ISO 2780.
1986, IDT)
GB/T 37891.1 Milling shanks with flat and end key drives - Part 1. General dimensions (GB/T 37891.1-2019,
ISO 10649-1.2013, MOD)
GB/T 37895 size with flat key and end key drive milling cutter attachment (GB/T 37895-2019, ISO 10643.2009,
MOD)
3 size
3.1 General provisions
All dimensions and tolerances are in millimeters, unmarked linear and angular dimensional tolerances are in accordance with GB/T 1804 "m", unfilled shape
And position tolerance according to the "k" level of GB/T 1184.
The interchangeable dimensions of the milling cutter on the milling cutter are in accordance with the provisions of GB/T 20329, and the dimensions of the fastening bolts are in accordance with GB/T 37895.
The cutter cutter tool interface size with flat key and end key drive is as specified in GB/T 37891.1.
The diagram is only a schematic diagram, does not represent the design diagram, just gives the dimensions that need to be met.
See Appendix A for the relationship between the dimensional symbols in this section and the symbols in the ISO 13399 series of standards.
3.2 with 7.24 automatic tool changer taper shank in accordance with GB/T 10944.1
The dimensions of the 7.24 automatic tool changer with shank conforming to GB/T 10944.1 are shown in Figure 1 and Table 1.
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