JB/T 3291-1999 This standard is a revision of JB 3291-83 "Precision of woodworking finishing planers". During the revision, only editorial changes were made according to relevant regulations, and the technical content remained unchanged. This standard specifies the parameters of vertical single-axis mortising machines. This standard is applicable to vertical single-axis mortising machines. This standard was first issued on June 20, 1983. JB/T 3291-1999 Precision of woodworking finishing planers JB/T3291-1999 Standard download decompression password: www.bzxz.net

ICS79.120.10
Machinery Industry Standard of the People's Republic of China
JB/T3291-1999
Woodworking Precision Planer
Published on May 14, 1999
National Bureau of Machinery Industry
Implemented on January 1, 2000
JB/T3291—1999
This standard is a revision of JB3291-83 "Precision of Woodworking Precision Planer". During the revision, only editorial changes were made according to relevant regulations. The technical content has not changed
This standard replaces JB3291-83 from the date of implementation. This standard is proposed by the National Technical Committee for Standardization of Unfinished Machine Tools and Cutting Tools. This standard is under the jurisdiction of Fuzhou Woodworking Machine Tool Research Institute. The responsible drafting units of this standard are Inner Mongolia Mouth Woodworking Machine Tool Factory and Inner Mongolia Electromechanical Research Institute. The main drafters of this standard are Li Bingsen and Zhu Jianguo. This standard was first issued on June 2, 1983. 1
Machinery Industry Standard of the People's Republic of China
Precision of woodworking finishing planers
This standard specifies the precision and inspection methods of woodworking finishing planers. This standard applies to woodworking finishing planers (hereinafter referred to as machine tools). 2
Cited standards
JB/T3291-1999
Replaces JB3291—1983
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. JB/T4171-1999 General Rules for Precision Inspection of Woodworking Machine Tools 3 General Requirements
3.1 When using this standard, refer to JB/T4171. 3.2 Refer to 3.1 of JB/4171-1999, adjust the installation level of the machine tool, and place the level gauge in the center of the workbench along the longitudinal and transverse directions of the machine tool. The reading of the level gauge shall not exceed 0.10/1000. 3.3 The order of precision inspection items listed in this standard does not represent the actual inspection order. In order to improve efficiency, the inspection can be carried out in any order. 3.4 When it is impossible to measure according to the specified length, the tolerance shall be converted according to the length that can be measured according to 22.1.1 of JB/T4171-1999, and the minimum conversion value is 0.01mm
4 Geometric Precision Inspection
Geometric precision inspection shall be in accordance with the provisions of Table 1.
Approved by the State Machinery Industry Bureau on May 14, 1999, and implemented on January 1, 2000
JB/T3291-1999
Inspection items
Workbench
Flatness of tabletop
aVertical
Straightness
bStraightness of diagonal
Workbench
Flatness of tabletop
aHorizontal
Straightness
Rotary
Workbench
Flatness of tabletop
Tool rest surface
A≤10000. 20
A>10000.30
B≤4000.10
B>400015
In the length of 300, the flatness of the workbench
table surface is only allowed to be convex
For the inspection method, refer to the relevant provisions of
JB/T4171—199
4.3.2.2.1
4.3.2.2.1
4.41.2.23
4.21.2.23
5 Working accuracy inspection
The working accuracy inspection shall be in accordance with the provisions of Table 2.
Simplified drawing and specimen size
10G~-200
JB/T3291-1999
Cutting conditions
The specimen is common wood (water content not exceeding
15%)
Flatness reaches
1000Length is
Inspection items
The roughness of the specimen surface
No trace of roughness can be seen
Inspection method refers to the relevant provisions of
JBT41711999
|After being planed by machine, the specimen is inspected visually and by hand for burrs, whistles, planing marks, horizontal and
mechanical damage. Use chalk
After scratching, no rough
rough marks can be seen
Mechanical industry standard
Woodworking precision creates planer precision
JB/T3291-1999
Published by the Machinery Standardization Research Institute of the Ministry of Machinery Industry Printed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry (No. 2 Shouti South Road, Beijing: Postal Code 100044)*
1/16 Printing sheet 1/2 Number of words 8000
Format 880×1230
First printing in August 1999
First edition in August 1999
Print count 1-500
Price 500 yuanbZxz.net
99-361
6666 /
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