JB/T 9151.2-1999 JB/T 9151.2-1999 Fastener test methods Dimensions and geometric accuracy Wood screws JB/T9151.2-1999 Standard download decompression password: www.bzxz.net

[CS 21.060.0
Machinery Industry Standard of the People's Republic of China
JB/T9151.1~9151.7—1999
Method of verification for fastenesSizeandgeometry
1999-06-28 Issued
State Bureau of Machinery Industry
2000-01-01 Implementation
1 Scope
Machinery Industry Standard of the People's Republic of China
Method of verification for fastenesSlzeandgeometry-Waodscrexs
JB/T 9151.2-1999
Replaced with ZB[13 X02.2--90
This standard specifies the test methods for the dimensional and geometric accuracy of non-standard cylinders, and should be used in conjunction with the corresponding product standards and generation standards. This standard provides two or more test methods for the items that do not specify the specific method. If necessary, the supplier and the buyer shall agree on it. This standard is used for the wood needles specified by national standards and industry standards, and non-standard parts can also be used for reference: Note: The dimensional symbols used in this standard, except for those specified, are consistent with the product standards and base sub-standards. 2 Cited standards
The texts contained in the following standards constitute the provisions of this standard through reference in the sub-standards. When this standard was published, the versions shown were valid. All standards will be revised. When using this standard, the possibility of using the latest versions of the following standards should be explored. GB/T 944.1 — 1985 | | tt | |tt||R/T9151.1—1999||tt ||Cross gear for frequency needle
Avoidance type caliper Vernier Caliper
Vernier type caliper Height vernier caliper
Outer diameter sub-meter
Digital indicator
Smooth extreme gauge
Radius template
Parts test method Size and geometric accuracy of bolts, screws, and bolts Test items, methods and inspection tools for the size of the nut
The test items, methods and inspection tools for the ruler are as specified in Table 1. Approved by the State Machinery Industry Bureau on June 28, 1999
2000-01-No. 1 implementation
JR/T9151,2-1999
Test items and test methods
Liu Ying width.
Method 1:
Use a 0.02mm caliper to measure in the high-quality range of K control. Method 2:
Use a patented caliper to measure the diagonal angle in the plate height range.
Method 2:
Use a patented caliper to measure the diagonal angle in the plate height range.
Method 1:
Use a 0.02mm caliper to measure ... patented caliper to measure the diagonal angle.
Method 2:
Use a patented caliper to measure the diagonal angle.
Method 1:
Use a patented caliper to measure the diagonal angle.
Method 2:
Use a patented caliper to measure the diagonal angle.
Method 1:
0.0 Method 3: Use a dial indicator (sheet measuring head) to select measurement method 3: Use a special suitable card to measure the concentration. Use a special card with 0.02 μm to measure the depth. Use a small card with 0.02 μm to measure the concentration. Perform regular inspections at 2 locations. |tt||Shoulder 1:
GB/T1214.2 stipulates: Ruler
Method 2:
Hand gauge conforms to the caliper specified in [8/T1957
GB Hall 1214.2
Caliper method 2:
Caliper gauge conforms to GD.T1957
Shoulder 1
GB Hall 12142 stipulates caliper
Method 2:
Plug gauge should comply with (
force method of J19.57! :
GBT12142 specified · F scale
square Germany 2:
H/T1219 specified dial indicator
opening method 3:
Plug gauge should comply with GB/T1957
GB/T944. [Rules of the · F · word Xi
GR/T1214 .2 The specified caliper is modified
JB/T91512-1990
Table 1 (鲮)
General test items are set to test force method
Head height
(1: * Angle head: H0.02mm caliper is used for measurement (2) Countersunk head and semi-countersunk head: Use a check gauge and a dial indicator for measurement (pictured)
(3) Back: Four inspection membranes (use a large and rotten configuration mold. To avoid Open "etc.) and percentage (sheet measuring head) (as shown in Figure 2]
Use a special outer diameter scale to measure
Method 3:
Six auctions: Use a special through and this caliper to measure the drawing
Method! :
Use a 0.020m caliper to measure
Use a special through and stop caliper to measure
Method 1:
(1GBT121 4.2 specified
(2) and (3! Use the dial indicator specified in GR/T1219
: Inspection degree: the basic size of the hole
diameter is equal to the basic size of the major thread diameter
d hole axis gauge It is perpendicular to the
base and the intersection with the
reference surface should not be sideways or example
Option 2.
GB/T1216 specified lower scale| |tt||Option 3:
The caliper shall conform to the caliper specified in GB/T1957
GB/T1214.2
Option 2:
The caliper shall conform to the caliper specified in GBT1957
JB/T9151.2-1999
Table 1 (Complete)
Test items and test methods
Diameter product
Method:www.bzxz.net
Measure with a 0.02mm caliper
Method 2:
Use a special caliper to measure
The diameter is k
Complete! ：
First use a 0.02mm caliper to measure the starting point A where the minimum diagonal height (e) of the composite product is located: Then use a 0.02mm caliper to measure the distance from the support to the starting point (see T9151.1 ---1999 l 21
Method 2:
First use a special ring gauge to determine the minimum diagonal height te specified in the product standard). The white point A: Use a 0.02mm caliper. The distance from the caliper to the point is "[see JBT9151.1-199912]. The nominal length and length of the caliper are measured in mm. The head is measured by using a shadow chart. The tooth type is free and sharp. The pressure is visually measured by a shadow meter. Method 2: Use a special section card to measure the depth of the plate. The method is as follows: tt||Use the shadow control to hit the measuring plate
Method 2:
GB T1214.2 current caliper
Method 2:
The caliper gauge should comply with GB1957
Method 1:
The caliper gauge specified in GB/T1214.2
Method 2:
The caliper gauge specified in GBT1214.2:
The feather diameter of the special gauge is:
e…”The hole can be used to achieve the effect
GB T1214.2 Specified caliper
Light shadow instrument
Point method:
Projection right
Method 2:
Special heat
Method! :
Control shadow collection
Method 2:
JB7980 Determined radius sample
First, color the radius sample, insert the large part, and form a special radius plate, whose radius
and the bottom of the stall repeatedly fit: remove the sample, and feel the spread situation: if the color is 17%, it is small, otherwise it is qualified
4 Geometric sugar content remaining test items. Methods and inspection tools JB/T9151.2-1999
Geometric accuracy test items, methods and according to the table? Regulations. Note: The test methods for coaxiality and verticality ignore the influence of shape error: Table 2
Test items and test methods
Axis degree of hexagonal head support rod
Use a special tester with optical lens and a dial indicator to measure the coaxiality of the head to the nail line
Method:
Use a special tester with a variable head and a dial indicator to measure the coaxiality of the head to the nail line
Method 2:
Use a 2mm caliper to remove the needle and the nut to the head and the hand or the distance between them The minimum distance position, after measuring the height of the opposite side, the difference is the measurement accuracy. The countersunk head is facing the needle sugar gauge. The countersunk head is used to measure the pulse of the nail rod axis with a special inspection fixture with a light head and a dial indicator. The measured piece is placed on the special inspection fixture with a variable head. Use a dial indicator (sheet-shaped measuring head) to take the reading of the side of the caliper. Turn 180 and measure the reading of the other circle. The difference between the two coupons is the measurement low. (B/T Dial indicator specified in GB/T 1219
Change to special inspection tool
Dial indicator specified in GB/T 1219
and special inspection tool
Part 2:
Caliper specified in GB/T 1214.2
Dial indicator specified in GB/T 1219
and special inspection tool
Special inspection tool and Dial indicator specified in GB/T 1219 The dial indicator or height caliper specified in GBV/T1214.3 (1) The non-thread effect part and the smoke pattern part are composed of two parts, and the thread shrinkage is strictly monitored. (2) Other brushing: The relative speed (s) should be the same as that in this sequence (1)
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