This standard specifies the tolerances and inspection methods for the geometric accuracy and working accuracy of plate rolling machines. This standard applies to three-roller and four-roller plate rolling machines. Other types of plate rolling machines should also be used as a reference (except for non-cylindrical working rolls). JB/T 8796-1998 Plate rolling machine accuracy JB/T8796-1998 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T8796-1998
Rolling Machine
1998-0717 Issued
1998-12-01 Implementation
State Machinery Industry Bureau
JB/T796—1998
2BJ62023·39 Rolling Machine Standard> was formulated on the basis of the old national standard DIN55505 Rolling Machine Acceptance Conditions>. According to the arrangement of the mechanical industry technology development plan, this standard is set as the recommended mechanical industry standard. The accuracy, inspection methods and tolerance values ​​specified in this standard are basically the same as those in LIN55805. However, in order to improve the product accuracy requirements of my country's rolling mill products, the uniformity requirements of the working condition of the plate are added to the standard according to the opinions of users and plate mill manufacturers. In this revision, in order to make this standard more applicable, the level and texture precision requirements of the working condition are removed, and the positive velvet precision is retained and compressed by 20%. From the date of its birth, it will replace ZBJ62C23-82. Appendix A of this standard is the standard appendix. This standard was proposed by the Technical Committee of Standardization of Pressing Machinery of the Ministry of Industry. This standard is under the jurisdiction of Jinan Forging and Forging Research Institute of the Ministry of Industry. The drafting unit of this standard is Changzhou Forging Machine Tool Factory. The drafting unit of this standard is Jiangyang Jing Press Factory. The main drafters of this standard: An Jiling, Chen Shengjie, Hua Kuanping, Li Shiping, Jian Suhong, Bai Shijun. 1 Scope
Machinery Industry Standard of the People's Republic of China
Rolling Machine
This standard specifies the tolerance and inspection methods of plate rolling machines for accuracy, working accuracy, JB/TS7961998
Generation ZBJ622389
This standard is applicable to plate rolling machines of different types, and its small plate rolling machines of different types shall be used in conjunction with the standard (except for non-circular working wheels). 2 Referenced Standards
The texts contained in the following standards constitute the content of this standard by being referenced in this standard. The versions shown are valid at the time of publication of the standard. All standards are subject to revision, and parties using this standard shall explore the possibility of using the latest versions of the following standards. Function. GB1092389 Forging precision inspection general
3 Inspection instructions
3.1 The precision inspection order of this standard does not indicate the actual inspection sequence. For the convenience of assembling and disassembling inspection tools and inspection force, the inspection can be carried out in any order.
3.2 During the precision inspection process, it is not allowed to adjust the components that affect the accuracy. 3.3 Any measurement items
3.3,11. When performing the precision inspection: Inspection item G1 should make the plate rolling machine work under no-load conditions, and inspection item G2 should be under relatively low load conditions. The loading method is shown in Appendix A (standard horizontal record) 3.3.2 The markings on the lower spokes of the plate rolling machine are shown in Figure 1. 1-upper mark = 2-front ticket 3-start example 14-four lifting and disassembling the machine under Figure 1
3.3.3 Geometric precision The accuracy is checked at points A and B. The distance between the working part and the working part is not shown in Figure 2. The national machinery industry product family approved on July 17, 1998, 12-01, 1998
3.4 ​​Detection of working accuracy
JE/T8796--1998
and cutting support
When the rollability is 2000mm, -50mm±3mm
When the rollability is required to be >2000mm, z-10cmm±3mm Figure 2
3.4.1 The limit of plate making is a, 245MPa, 3.4.2 According to the plate rolling machine and the plate thickness of not less than 50% of the rollable plate thickness, roll the workpiece with a specified small diameter (for the plate rolling machine without end pre-bending, use special molds or other devices to increase the sound process). 4 Accuracy inspection
Leveling inspection see table.
Machine bundle!
Leveling
Inspection method
Use GB1093 has provisions
Level
, place the half-rule sharp level instrument at the ten points of
, and select the number,
h level as much as possible
under
to be leveled, the level is discussed, and
note its effect on the screening machine
in
on the leveling plate of the reverse machine
4.2 North can be accurate inspection see Table 2
JB/T8796-1998
Two deviations,
Yan adjustment | |tt||Towards Suiping
1 Longpi
raise to 51
wish, etc.
the question
equal distance
push to
say, etc.
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on Yinzhigui》
side lift with fixed tons when
on Hui diameter
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three bullet diameter D
200--00
yuanjuli
flat ruler,
test calligraphy
quote 1092 relevant provisions
5. 4. 1. 2. 3. Place the half ruler and the book at point A and point B to adjust the gauge to check its level. The large detection design obtained at point 4H is not used for the three-axis mounting plate machine. Place the flat ruler on the full-scale instrument after Xie Ping, and place the indicator base on the flat ruler. Support the thin head of the indicator and the drum. When measuring, etc. |tt||The degree of natural electric difference between two points A and D is measured by a potential meter (the detection can be carried out at the same time). At points A and B, use an inner diameter dry meter to measure the distance between the two phases at the same time - the high-rate distance can be adjusted to the value card of A and B. When measuring, the four-plate machine can adjust the storage detection, so as to stop
at points A and B, use a diameter dry meter to measure the distance between the two phases before the deviation. The equidistant degree difference is based on A, B:
the previous point is collected as the high monitoring position
4.3T as the accuracy inspection item. See Table 3,
JD/T8796—1998
Requirements 2 (complete)
General
Data of the above
Data of the above
Equal running
degree·Chuan
In the world bottle
Trigger
Reported diameter D
On the gauge diameter D
>200~5UU
Fill in the normal time
Fill in According to the relevant provisions of Article 323 of Dengfangda, after measuring the distance between points AB, the difference between the two points AB can be calculated by measuring the difference between the two points AR with ten meters. The distance between points A and R can be calculated by precision vernier card. JA/T8796-1998 58 --+
External data of the numerical control system
AI loading plate
JB/T8796 1998
(Appendix of the standard)
Loading method for geometric accuracy inspection
A1.1 The return pole of the batch plate, 21sMP: tA1,3 The dimensions of the specific loading pole are shown in Figure A1.
Loading plate thickness, mm:
The thickness of the plate that can be rolled by the plate rolling machine, mm.
Cutting plate width, mm:
The width of the plate that can be carried by the plate rolling machine, mm.
Loading material length, mm:
The center distance of the plate rolling machine (the center distance can be the center distance of the plate rolling machine when it is nominally full load), mm. A2 Loading plate placement position
Loading material placement value is shown in Figure A2, the distance between the loading material and the end of the work part of the assembly 1 is: when the rollable plate width is 2000mm = 70 + mm
when the rollable plate width is -2000mm: 1 = 120, A3 Loading plate loading degree
The load plate is cut to the specified position, so that its fullness is greater than or equal to 3 times the thickness of the cut plate (the proof is about 1% of the full stock). See A2,
f The deflection of the cut plate after cutting, mm
The width of the cut plate, mm.
JB/18796—J998
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