QB/T 3557-1999 Technical requirements for thread take-up lever of GC15 high-speed lockstitch sewing machine

This standard specifies the technical requirements, test methods and inspection rules for the thread take-up lever of GC15 high-speed lockstitch sewing machine. The technical standard is applicable to the thread take-up lever of GC15 high-speed lockstitch sewing machine. QB/T 3557-1999 Technical requirements for thread take-up lever of GC15 high-speed lockstitch sewing machine QB/T3557-1999 Standard download decompression password: www.bzxz.net

Classification number: Y17
Light Industry Standard of the People's Republic of ChinabZxz.net
OB/T3557-1999
Generation 7A/TY170:1990
GC15 type high-speed lockstitch sewing machine thread take-up lever
Technical conditions
199904--21 release
State Bureau of Light Industry
1999-04-21 implementation
QB/T3557-1999
This standard is the original professional full 7.R/TY17074:1390GC15 type high-rise flat sewing machine thread take-up lever technical provisions: can step light industry (1999112 good text release will be the standard number 03.13357-1999, the narrow standard is not signed by the State Bureau of Light Industry This standard is applied for the standardization of the whole area of ​​​​the avoidance machine. The standard is from the Shanghai Avoidance Machine Research Institute. The drafter is not required, and the academic list is clear. Shen Huangxin. From the date of implementation of this standard, the original number of the light cloth ZTY1704-99C15 type Suiping anti-thread support method is full of technical requirements. TYK/6NKA-
Light Industry Standard of the People's Republic of China
G5 type high-speed flat sewing machine thread take-up rod
Technical conditions
1 Subject content and scope of application
QB/T:3557-1999
Generation 7. [3TY17034—1930
Not standardized C15 type high-speed semi-seam peach non-thread opening technical requirements, trial and inspection methods planning! This standard is Technical requirements for FGC type high-speed flat warping machine
2. The hole should be smooth and without sharp edges. 2.3 Heat treatment can not improve the absorption rate to V600.
Approved by the State Light Industry Trade Commission on April 21, 1990
Sales date on April 21, 1999
QB/T3557-1999
2.4 The surface should be smooth and bright, the color should be basically the same, without defects such as peeling, rust spots, pools and soil damage. 3 Test methods
3.1 The basic size must be 5.5* with a special size of 12. The size is 32.m. The general quality level of the corresponding size is selected. 3,3 The basic size of 2 is 0.3m, and the special size is 0.1mm. The inner diameter is in the period of the ruler. 3.4 The size of 2 yuan 6, 10, 38.3mm is collected by a special field test. 35 The method of small to large parallelism is shown in the figure. Select the new center that matches me perfectly, and place the center shape to be measured! Then the readings of the two giants with a cumulative distance of L are Mx. The shape is transferred to 90, and the above measurement method is used. The error of the two holes is calculated according to the formula. d. The two 12m auxiliary lines are 03m and the parts are installed on the special product: The maximum six percent error of the measured part during the rotation of the measured part is the layer straightness error before the end of the part (towards the other end) 37 The surface machine is used to measure the relative twisting change comparison block. 3.8 Replace the hard with Vilo hard should be completed, near the part to see the request surface, 3.9 External quality inspection
Under natural light illumination 600±200, from the surface of the material 300mm, H measurement does not exceed 1% mmHTYK/6N KAa-
1 Age inspection rules
Inspection classification (see fee)
Inspection items
Article 2, 5.5*54 yuan.
.1 Article 12
$21 Article 2..mm
Article 2, 1 Article
Article. Parallel a
Article 21 030
Elastic 2.1 Article Cold surface rent According to the quality standard of QB/T3557--1999, the quality of the end hole D surface shall not be lower than that of the planting type. The surface center penetration of the two blue surfaces is not allowed to be classified temporarily. 4. 2 The receiving party shall conduct the whole inspection according to the inspection requirements of this standard, and the inspection plan or relevant sample plan and judgment shall be made by the commercial party at present.
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