This standard specifies the dimensions and allowable deviations, supply and marking, technical requirements, acceptance rules and test methods of gear pressure plates. This standard is applicable to the manufacture of gear pressure plates for motors. JB/T 2834-2000 Gear pressure plates JB/T2834-2000 Standard download decompression password: www.bzxz.net

ICS29.160.10
Machinery Industry Standard of the People's Republic of China
JB/T2834
2000-04-24
Wa Ji Dong
2000-10-01 Xiao Huang
JB/T28342000
This standard is a revision of JB2834-80 Tooth Pressing Plate. In addition to changing the measurement unit to the International System of Units and compiling rules in accordance with the relevant provisions of GBT1.1, the following modifications are made to the technical content: [Added Article 2 "Cited Standards"... Item. 2 The marking of surface roughness in Figure 1 is modified according to the current standard provisions. 3 Modifications to Table 1 of the original standard: remove the weight, retain "1 and its allowable deviation" and "b, R and its allowable deviation\, and specify them in Table 1 and Table 2 respectively.
4 This standard changes Article 2 "Technical Conditions" of the original standard to Article 4 "Technical Requirements". 5 Article 4.1 is expressed as follows according to GB/T700: "The material of the tooth pressure plate is generally carbon structural steel Q235, and its chemical composition, mechanical properties and technical requirements shall comply with the relevant provisions of GB/T700. \6In Article 4.2, the original standard "non-straightness" was changed to "straightness". In Article 4.3, the original standard "non-perpendicularity" was changed to "perpendicularity\.
7In Article 4.2, the original standard "toothed pressing pieces delivered in strips shall have a straightness of no more than 2 mm per meter" was changed to "toothed pressing pieces delivered in strips shall have a straightness of no more than 3 mm per meter". 8In Article 4.6, the content "technical requirements not specified in this standard shall comply with the provisions of GB/T704" was added. 9In Article 5.2, it was modified to... Use a universal measuring tool with an accuracy of 0.02 mm to measure the cross-sectional dimensions". 10 Article 5.3 is revised to "The verticality of the tooth pressure piece can be measured by a measuring tool or a special recording tool." 11 Article 5.4 is revised to ".. If it fails to meet the requirements again, it shall be doubled for sampling until the qualified ones are delivered after inspection." 12 Article 6.2: The content of the revision is revised to only stipulate the packaging requirements, but not the specific packaging materials and methods. This standard will be implemented from the date of implementation and replace B2834-80 at the same time. This standard was proposed by Harbin Large Electric Motor Research Institute and is under the jurisdiction of the same department. The drafting unit of this standard: Shanghai Electric Motor Factory Co., Ltd. The main drafter of this standard: Jin Weihua.
1 Scope
JB/T28342000
JB283480
This standard specifies the dimensions and allowable deviations, supply and marking, technical requirements, acceptance rules and test methods of gear press pieces. This standard applies to the manufacture of gear press pieces for motors. Referenced Standards
The provisions contained in the following standards are incorporated by reference in this standard. The provisions of this standard are constituted. At the time of publication of the standard, the versions shown are valid. All standards will be revised. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T700-1988 Carbon structural steel
GB/T704-1988 Hot-rolled flat steel dimensions, shape, weight and allowable deviation 3 Dimensions, supply
3.1 The battle surface shape of the toothed pressing piece is shown in Figure 1.
The specifications, dimensions and allowable deviations of the toothed pressing piece should be Comply with the provisions of Table 1 and Table 2. Figure 1
Va Extremely Slow 2000-04-24 Tube
2000-10-01 Small Cable
Height h
Broadside b
Dimensions in brackets are not recommended.
2R part can be chamfered,
3.2 Toothed Sheets should be supplied in strips.
3.3 The supply specifications of toothed sheets are as follows: JB/T28342000
Table 1 h and its allowable deviation
Allowable deviation
Table 2b, R and its allowable deviation
Allowable deviation
Rounded corner R
Allowable deviation
a) Normal length: 2~4m. The allowable supply length is not less than 1.5m, but shall not exceed 15% of the quantity of a batch of delivery orders: b) The fixed length and multiple length shall be indicated in the contract, and the allowable deviation of the length is +30 mm. 3.4 When ordering, the following shall be indicated: specification, material and number of this standard. The toothed pressing plate with a width of 10mm and a height of 25mm made of carbon structural steel Q235-A is marked as: Toothed pressing plate 10×25 Q235—A JB/T28344 Technical Requirements
4.1 The material of the toothed sheet is generally carbon structural steel Q235, and its chemical composition, mechanical properties and technical requirements shall comply with the relevant provisions of GB/T700.
JB/T28342000
4.2 The straightness of the toothed sheet delivered in strips shall not exceed 3mm per meter. When the height dimension h is greater than 30mm and is limited by the straightening equipment, the straightness requirements can be determined separately by agreement between the supply and demand parties. 4.3 The adjacent edges of the toothed sheet shall be perpendicular to each other, and the verticality shall not exceed 0.05mm per 10mm, and the edges shall be free of burrs. 4.4 The toothed sheet shall not have obvious torsion.
4.5 The surface of the toothed sheet shall be clean and polished, without cracks, scars, inclusions, folding and rust, etc., but local mechanical scratches, spots, pits and small burrs are allowed, and their depth shall not exceed half of the allowable shrinkage difference. 4.6 Technical requirements not specified in this standard shall comply with the provisions of GB/T704. 5 Acceptance rules and test methods
5.1 Toothed sheets shall be accepted in batches, and each batch shall consist of the same material and the same specification. 5.2 10% of each batch of toothed sheets shall be sampled for surface quality inspection with the naked eye and the cross-sectional dimensions shall be measured with a general measuring tool with an accuracy of 0.02mm. 5.3 The verticality of toothed sheets can be measured with a general measuring tool or a special recording tool. 5.4 If one of the inspection results is unqualified, it cannot be shipped out of the factory, but it is allowed to be submitted for acceptance as a new batch after new processing. If it is unqualified again, it needs to be doubled for sampling until it is delivered after passing the inspection item by item. 6 Packaging, marking and transportation
6.1 Toothed sheets shall be delivered in bundles, and each bundle shall be composed of the same material and the same specification. The weight of each bundle shall not exceed 30kg. 6.2 Toothed sheets shall be coated with anti-rust oil before packaging when leaving the factory. The packaging shall be divided into two layers, and each bundle shall not be less than the blue. 6.3 The toothed pressed sheets shall be transported under the condition that they will not be damaged or corroded. 6.4 Each batch of toothed pressed sheets shall be hung with a label and tied with wire on the outside of the packaging. The label shall indicate: a) Manufacturer name:
b) Product name:
c) Specifications;
d) Materials;
e) Production date;
f) Standard number.
6.5 Each batch of toothed pressed sheets shall be accompanied by a quality certificate, which shall indicate: Manufacturer name, workshop number, materials, product name, specifications, quantity, various technical condition inspection results, quality management department's stamp and label number. Shu Ying CheekWww.bzxZ.net
JB/T2834
Yan Mo 880b1230
19XXXX Ridge
100044
Dai Duan x/X
Zhang Ju xXX.XXX
19XX Nest XX Cabin
Division X Horse
De pxXX.XX Wing
Peng Ji Ou
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