This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of roller-type cutting machine knives (hereinafter referred to as "cutting machines"). This standard applies to cutting machines used in grass cutters, cloth cutters, hemp cutters, bamboo cutters and other equipment. QB/T 1565-1992 Roller-type cutting machine knives QB/T1565-1992 Standard download decompression password: www.bzxz.net

Light Industry Industry Standard of the People's Republic of China
Roller Cutter Knife
Subject Content and Scope of Application
QB/T1565—1992
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of roller-type cutter knives (hereinafter referred to as "cutters").
This standard applies to cutters used on grass cutters, cloth cutters, hemp cutters, bamboo cutters and other equipment. 2 Reference standards
GB/T 699
GB/T 1299
Technical conditions for high-quality carbon structural steel
Technical conditions for alloy tool steel
GB/T 2828
Counting sampling procedures and sampling tables for batch inspection (applicable to inspection of continuous batches)YB/T28Metal microstructure inspection method
ZBJ36003Metallographic inspection standard for tool heat treatment3 Product classification
3.1The type of the material cutter shall comply with the provisions of Figures 1 to 3, and is divided into two types: flying cutter and bottom cutter. 3.2Model indication method
Design modification code
—F indicates flying cutter
-D indicates bottom cutter
Roller cutter cutter code
Note: n=number of slots minus 1.
Figure 1 LF type
Approved by the Ministry of Light Industry of the People's Republic of China on July 6, 1992 138
Blade bevel
Implemented on March 1, 1993
Note: n=number of slots 1.
3.3 Basic dimensions of the material cutter
QB/T1565—1992
Figure 2 ID type
3.3.1 The basic dimensions of the fly cutter shall comply with the provisions of Table 1 and Figure 1. 3.3.2 The dimensions of the bottom cutter in Figures 2 and 3 shall comply with the provisions of Tables 2 and 3 respectively. Table 1
Note: Specifications without brackets shall be adopted first. H
50-180-115-115-180-50
Figure 3 LDA type
Blade bevel
Blade bevel,
(55)
4 Technical requirements
QB/T1565--1992
The feed knife shall comply with the provisions of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 4.1
4.2 The material of the feed knife is 8MnSi and 65Mn, and its performance shall comply with the provisions of GB/T1299 and GB/T699 respectively. Other materials with performance not lower than that of such steels may also be used.
4.3 Heat treatment requirements
4.3.1 The distance between the quenching zone of the feed knife and the root of the slot (hole): 15~25mm for the flying knife and 10~~20mm for the bottom knife. 4.3.2 The hardness of the cutter's fire zone is HRC55-60, and the hardness difference of the same piece is not more than HRC3. 4.3.3 The metallographic structure of the cutter's fire zone is tempered martensite, the martensite needle length is not more than level 3, and the network carbide is not more than level 2. 4.4 The welding part of the cutter made of two materials should be firm and reliable, and there should be no gaps and slag inclusions. 4.5 The dimensional limit deviation of the cutter should comply with the provisions of Table 4. Table 4
Limit deviation
Length L
Blade thickness is not more than 0.5mm. bzxz.net
Width B
4.7 The shape and position tolerance of the cutter should comply with the provisions of Table 5. 140
Thickness H
Distance from reference
Slot width α
Blade straightness
Straightness in the length direction of the front
QB/T1565—1992
The surface roughness of the material knife shall comply with the provisions of Table 6. Table 6
4.9 Appearance
4.9.1 The material knife shall not have defects such as cracks, burrs, rust, etc. 4.9.2 The front of the material knife and the blade bevel are not allowed to have spots that cannot be ground. 5 Test method
The test method shall comply with the provisions of Table 7.
Blade thickness
Slot (hole) distance
Blade straightness
Front straightness
Test method
Use a steel tape measure to measure the length of the middle part of the material knife. Use a vernier caliper to measure the width of the middle point and two points 50mm away from both ends.
Use a micrometer to measure the thickness of two points 10mm away from the back and 50mm away from both ends, as well as the thickness of the middle point. Use a vernier caliper to measure the blade thickness of two points 50mm away from both ends of the material knife and the middle point.
Method 1:
Use a vernier caliper to measure Li and L
Then L=(L+L2)/2;
Method 2:
Inspect with special inspection fixture
Use vernier caliper to measure in the middle part of the material cutter groove height. Place the material cutter blade on the platform, use a feeler gauge to measure the maximum gap. If it is convex, first pad the two ends with feeler gauges of equal thickness and then use a feeler gauge to measure the minimum gap. Subtract the minimum gap from the fixed feeler gauge to get the straightness of this item
Place the ruler in front of the material cutter in the diagonal and length directions, and use a feeler gauge to measure
It is the inclined surface
Tolerance grade
Steel tape measure
Vernier caliper
Outer diameter in thousandths
Vernier caliper
Special inspection fixture,
Vernier caliper.
Two methods
With equal
Vernier caliper
Face gauge, platform
Knife ruler, feeler gauge
Gauge blocks of equal thickness
Surface roughness
Hardness and hardness difference of the same piece
Metallographic structure
QB/T1565—1992
Continued Table 7
Test method
Measured by surface roughness measuring instrument Or use the surface roughness sample block for comparison
Measure one point at 50mm from both ends along the middle of the width of the hardened area of ​​the cutter, and measure one point in the middle of the length. The maximum difference in hardness of the three points is the hardness difference of the same piece
According to YB/T28 and ZBJ36003
Cracks, gaps, slag inclusions, etc.
6 Inspection rules
6.1 Inspection classification
Cutters are divided into factory inspection and type inspection. 6.1.1 Factory inspection items are 4.3.1, 4.3.2 and 4.4 to 4.9. 6.1.2 Type inspection is carried out in one of the following situations. a.
When there are major changes in materials and processes that may affect product performance; when there are objections to product quality;
When the national supervision agency proposes to conduct type inspection; continuous production, once every six months;
When the cutter is stopped for more than half a year and then resumes production. 6.2 Sampling and batching rules
6.2.1 Factory inspection
Surface roughness
Tester,
Surface roughness
Test block
Rockwell hardness
Metallographic microscope
6.2.1.1 The same variety and specification of knives with basically the same production conditions and the same material feeding are collected into batches and submitted for inspection. 6.2.1.2 The quality of knives is divided into three categories: Class A unqualified, Class B unqualified and Class C unqualified. For Class A unqualified and Class B unqualified, AQL is the number of unqualified products per 100 units of products; for Class C unqualified, AQL is the number of unqualified products per 100 units of products. Correspondingly, when implementing sampling inspection, for Class A unqualified and Class B unqualified, A. and R. in the sampling plan are counted by piece (number of unqualified products), and for Class C unqualified, A. and R. Count by item (number of non-conforming items). 6.2.1.3 Inspection level regulations: General inspection level I for Class A, Class B Group 1 and Class C, special inspection level S-3 for Class B Group I.
6.2.1.4 Strictness regulations: Conduct normal inspection. 6.2.1.5 Sampling plan regulations: The sampling plan is carried out in accordance with the single sampling plan specified in GB/T2828. 6.2.1.6 The classification and grouping of non-conforming items are shown in Table 8. 6.2.1.7 The specified value of the acceptable quality level (AQL) is shown in Table 9. 6.2.1.8 The inspection results are determined in accordance with GB/T2828. 142
Defect category group
6.2.2 Type inspection
QB/T1565—1992
The blade has cracks, gaps, slag inclusions
The thickness does not meet the requirements;
The roughness of the front and bevel surface does not meet the requirements; The straightness of the front and blade edge does not meet the requirements; 3
There are black spots on the hardened area of ​​the blade
The hardness of the hardened area of ​​the blade does not meet the requirements;
The hardness difference of the same piece exceeds the tolerance;
The groove distance does not meet the requirements
The width does not meet the requirements;
The length does not meet the requirements Requirement;
The slot width does not meet the requirements,
The marking and packaging do not meet the requirements;
The appearance does not meet the requirements;
The distance between the hardened area and the slot (hole) root does not meet the requirements; The angle does not meet the requirements;
The blade thickness does not meet the requirements,
Other items do not meet the requirements
Class B Group I
Class B Group I
6.2.2.1 Type inspection Randomly select pieces from the products that have passed the factory inspection and inspect 4.2, 4.3.3. Class C
6.2.2.2 If the type inspection is judged to be unqualified, the product should be stopped from acceptance, and the reasons should be analyzed and measures should be taken until the new type inspection is passed.
7 Marking, packaging, transportation and storage
7.1 Each piece of knife should be clearly printed with the manufacturer's name (or trademark) and manufacturing date and other marks in the appropriate position. 7.2 Each blade should be cleaned and dried, then coated with anti-rust grease, and then packed with anti-rust paper, and then packed into an ordinary wooden box. Under normal transportation and storage conditions, it will not rust within half a year from the date of leaving the factory. 7.3 The wooden box must be firm.
7.4 The following technical documents should be attached to the packaging box: a.
Packing list;
Product certificate;
Product instruction manual.
7.5 The following contents should be clearly marked on the outside of the packaging box: a.
Receiving unit and address;
Product name and specifications;
Product gross weight and quantity;
Manufacturer name and address;
Date of shipment.
QB/T1565-1992
The product should be stored in a well-ventilated place, strictly prevent moisture, and cannot be stored with corrosive items. 7.6
Additional Notes:
This standard was proposed by the Technical Equipment Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Light Industry Machinery Standardization Center. This standard was drafted by Sichuan Light Industry Machinery Factory and Tianjin Cutting Tool Factory. The main drafters of this standard are Sun Tianrong, Liu Yunsheng and Shao Chenghui. From the date of implementation of this standard, the former Ministry of Light Industry standard QB665--1976 "Roller-type cutting machine knife" will be invalid. 144
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