This standard specifies the dimensions and marking examples of straight shank machine reamers with angled edges. This standard applies to high-speed steel straight shank machine reamers with angled edges and diameters greater than 5.3 mm to 20 mm. This standard only specifies metric dimensions and will only recommend metric dimensions in the future. This standard lists two tables, one for preferred dimensions and other corresponding dimensions; the other for dimensions divided by diameter. The tolerances for reamer length, cutting part diameter and shank diameter of straight shanks are also specified. GB/T 4244-2004 Straight shank machine reamers with angled edges GB/T4244-2004 Standard download decompression password: www.bzxz.net

[CS 25. 100. 30
National Standard of the People's Republic of China
GB/T4244-—2004
Replacement G3424484
Machine reamers with edge inclinatlon with parallel shanks2004-02-10 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China
2004-08-01 Implementation
This standard replaces (/14211-1524) with normal inclination angle machine reamer 2 from the date of implementation. Compared with B/T4244—1984, the main changes of this standard are as follows: the standard design is changed, Diameter tolerance
Training "piece"
Add "model"
CB/T4244-2004
Cancel the reference number scale in the core B/42441994 example (the surface roughness is listed in the technical conditions standard
G443 uses medium \ The change in the table
Cancel G3/T45449R 4 The reference dimensions in the table: 12, F and number of teeth, adjusted the clauses of G/T1244991:
Each (13/4241S84 The table is adjusted as follows: Table 1 Length tolerance, Table 2 Preferred size in English, Table 3 Size divided by diameter
5B/T4244133- The tolerance of the tool diameter d for machining H7H and TI9 grade precision heavy internal belt angle straight two machine tools is listed in Appendix As
Modify the "Machine Example of the cup mark of the fragment knife:
Added the attached A(.1H7, H3, H3 grade hole design practice diameter>This standard is recorded as a normative appendix.
This international standard is issued by the China Machinery Industry Federation. This standard is subject to the National Technical Committee for Standardization (SATC5) of the Ministry of Industry and Information Technology. The main operators of this standard are: the place, Xu Gang, and the standard certificate of the current quarterly standard book quality and effectiveness version: GB/T 4244-984.
1 English circle
Straight shank machine reamer with blade inclination
The wood standard specifies the size and marking of the machine reamer with a low angle handle. This standard is suitable for commercial vehicles with large diameters, 5.mm to 20mm with a relatively large load straight shank machine. This standard specifies the size of the metric system, and the size of the future will be selected from the GA/T 4244—2004
This standard lists two tables: one is the size of the best and other corresponding dimensions, and the other is the size divided by diameter. The effective tolerance of the length of the knife and the diameter of the handle of the broken part is also stipulated. 2 Normative Reference Documents
The clauses in the following documents become the clauses of this standard through the introduction of this standard. For reference documents with a date of 1 month, all the amendments (not including the internal errors) after that are not applicable to this standard. Therefore, the parties who reach an agreement on the standard are encouraged to study whether the latest version of this document can be used. For all reference documents without a date, the latest version is applicable to the standard. (H/4246 special carbon tolerance GB/T42462004.1522:176, HX) 3 Tolerance
3.1 Cutting part
The white diameter α is measured before and after the can is scratched, with each standard mirror small, and the diameter tolerance is 5. For specific tolerance holes and tool diameter tolerances, the standard is given in Appendix A. 1.H7, H8, H9 grades. 3.2 Shank diameter d tolerance: s. 3.3 Length tolerance: The length tolerance is as shown in Table 1. Table 1 Length tolerance: Total length, cutting tool length. The unit is 1/4". The tolerance is not included. The height of the handle and the height of the handle are selected according to the adjacent larger and smaller sizes. The tolerance is as shown in Table 1. 1,
example:
diameter is 11mm book special common blade low load machine knife: area 1 can be 15=mm, length 1 is 1mm and straight handle length m, length 1 is 10mm and straight length 0m see table) 4 size
$B/T4244—2004 bZxz.net
note the size is
diameter range
blade inclination angle machine knife
system 2 worry about the preferred size
table 3 diameter segment size
single sex is wine society
single business is
11, x:
The above will use the reason
5 standard example
Table 3 (continued)
Diameter 10t: The male is m6 with inclination angle straight machine tool for the same as the inclination angle self-trim machine tool model 10GB/T4245-214 diameter processing cable avoidance with constant negative handle machine tool: purchase angle straight quality price end 10H86B4243202444
GA/T 4244—2004
The order is from
GA/r4244—2004
.S. uD
Appendix A
(Normative record)
The tolerance table of reamer diameter for processing H7, H8, H9 group holes 4. 1
Limited trust difference
Unit is meter
I c,c2c
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