This standard specifies the type and size, technical requirements, performance test, marking and basic requirements for packaging of integral carbide printed circuit board twist drills (hereinafter referred to as PCB) with a shank diameter of 3.175mm for processing printed circuit boards. This standard is applicable to PCB drills with diameters ranging from 0.1 to 6.4mm. JB/T 8367-1996 Integral Carbide Printed Circuit Board Twist Drills JB/T8367-1996 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T 8367—96
Integral Carbide Printed Circuit Board Twist Drills 1996-04-22 Issued
Ministry of Machinery Industry of the People's Republic of China
1996-07-01 Implementation
JB/T 3696
This standard was proposed and managed by the National Tool Standardization Technical Committee. The responsible drafting units of this standard are: Chengdu Tool Research Institute, Gonghai Tool Factory. The main contributors to the standard are: Ran Jin, Shen Shangchang, Sha Weihua.
This standard was first issued on April 22, 1996. The standard will be implemented from July 1, 1996. Scope
Machinery Industry Standard of the People's Republic of China
Integral Carbide Printed Circuit Board Twist Drill JB/T 836706
This standard specifies the type and size, technical requirements, performance test, marking and packaging requirements of integral carbide printed circuit board twist drills with a diameter of 2.175 mm for processing printed circuit boards. This standard is applicable to PCI drills with a diameter ranging from 0.1 to 6.4 mm. 2 Referenced Standards
The provisions of the following standards shall generally be cited in this standard and shall be included as the main text of this standard. When the standard is published, the versions shown are valid: all standards are revised, and the members of this standard explore the possibility of using the latest versions of the following standards: CB 2075-87
Classification and classification of hard alloys for cutting and polishing, code 3 symbol
TPCB post average length:
PC drill diameter:
&PCB pre-direction:
9 PCB stand end rotation negative.
Type and size
4.1PCB station type according to Figure 1. Wind 2 as shown, cost size and deviation table 1 table 2.8
Ministry of Machinery Industry 1996-0422 approved
Daisokai··
Daqian out of the second piece of market
1996 implementation
Basic size
Limited front difference
JB/T 836796
Quick use type
Supermarket management
Limited front inbzxZ.net
u, u8
J$/T836796
Table 1 (end)
General title
Super long volume
JB/T 8367-96
Wave limit before main
Universal
Main limit knife quantity·-after
JB/T396
Table 2 complete)
Pan Yue type
Diameter do.4m.Inner deer i=a.2mumrPin drill: Civilian
Common hard gold gate made wire drop package Donghua drill C1×3.2JR/T8867--S612.7
5 Technical requirements
JR/T8367-96
5.ICB drill cutting edge should be sharp, without useful cracks and other defects that affect the performance. 5.2 The upper limit of the PC drill surface material feed rate is: main cutting first back R0.6311
main cutting second back R.0.90μm;
working part outer diagram and 40
working hook R,am:
working handle R,..
5.3 The FCB with a straight size d20.5mm is not greater than the axial circle or tolerance of the working part to the handle axis. 5.4 The HCB with a diameter of 4=U.51mm is estimated that the inclined circle of the cutting edge to the axis of the working part should not be greater than 0. C15mm, 5.5≤1.m PCT drills should have a working part diameter of 0.05~~0.15m per 100mm of PCR drill diameter>1.0mm. 5. PCB drills should have a drill core increment
5.7 PCB drill materials are in accordance with GB2C73 regulations. K10 light hard metal is used. Performance test camel
PCB drills produced in batches should be subjected to cutting performance tests every time. 6.1 Test conditions
6.1.1 Machine tools; CNC drilling machines that meet the requirements 6. 1. 2 Tool; The sample size is 5 pieces, and the clamping is good. The radial runout tolerance of FCB drill is less than -F0.015m. 6.1.3 Test ball, the material is fiberglass, and the material thickness is 1.61m. 6.1.4 Cutting specifications: Through holes, according to the requirements of Table 3, the drill diameter is in Table
.
c.25--t.3i
U. 4.~U. 41s
C. 5~-0. 65
f, 7~~0.85
0. 9--1. 15
1. 3~. 45
. b ~ L. 6.
2. 5 2. s
2. 25 ~2. #
. th--..1
S, 15.-4.r
Cutter's degree
su/rol
[1E-125
145~181
16:--251
Feed
J, 020~0, sb
. dd, U
C, CA~C, Go
0. U3s-~u. (55
0. u3--0. 0g
U. 025-(. 935
u. t22.~0. 03
U. 02.~0. 03
Station trip time
4, ~-6. 0
Test result determination
215--375
906--403
JB/T8367-96
Table complete)
Start measurement at
.um./t
n.0:3-G G25
Age reduction line second paragraph
Printed number Vibration indication
After the test, the PC drill shall not have embedded edges and obvious wear. If one piece does not meet the requirements, it is judged that the IB drill piece cannot be tested:
Marking and packaging
7.1 Marking
, the specifications can be marked on the PCB.
7. 1. 2. The packaging should be marked with:
: a) Name of the manufacturer, region b) PCB board mark:
) Alloy grade of the item
l) Number of pieces:
+ ) Year and month of manufacture:
Method: It is best to pack too small, and the packaging documents such as the instructions should be noted in the package. 7.2 Packaging
The packaging of the PCB board must be semi-solid to prevent damage during transportation.
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