This standard specifies the type, parameters, technical requirements, inspection rules and markings, packaging, storage and transportation of rotary worktables. JB/T 4370-1996 Rotary workbench JB/T4370-1996 standard download and decompression password: www.bzxz.net

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Machinery Industry Standard of the People's Republic of China
JB/T4370—96
Rotary Table
Published on April 22, 1996
Published by the Ministry of Machinery Industry of the People's Republic of China
Implemented on October 1, 1996
JB/T4370—96
Foreword
This standard is a non-equivalent adoption of the Japanese national standard JIS B6160-1985 <Function Indexing Table> for GB6085-85 Rotary Table Parameters>, GB6086-85 <Rotary Table Accuracy> and JB4370-86 Vertical and Horizontal Rotary Table Parameters and Accuracy>, JB4 372-86 (Parameters and Accuracy of Tilting Rotary Tables). The differences between this standard and JIS B6160 are:
This standard specifies the height, center height, taper hole, center hole, tilt angle, hand wheel scale value and vernier scale value of the turntable: This standard does not include the verticality of the table surface of the vertical and horizontal turntable to the side of the base and the offset of the rotation center line to the positioning chain; This standard does not include the provisions for material selection and hardness: This standard stipulates that the connecting line of the two tips of the vertical and horizontal, tilting turntable and tailstock is at the same height as the bottom surface and parallel to the side of the positioning key; This standard stipulates requirements for packaging, storage and transportation; This standard stipulates the verticality of the tilt axis of the tilting turntable to the side of the positioning key; the parallelism of the tilt axis of the tilting turntable to the bottom surface, this standard is different from The important technical differences between this standard and the above-mentioned standards of my country are: the locating keys of horizontal and tilting turntables are cancelled; necessary adjustments are made to the verticality of the locating key sides of the tilting axis of the tilting turntable; when the turntable table is vertical, the parallelism of the spindle axis to the bottom surface is stipulated not to be lower than the front; the reverse idle stroke of the turntable handwheel is increased to 6°; the width of the locating key is increased by the value of the corresponding smaller gear. This standard shall be implemented from October 1, 1996 and fully implemented from April 1, 1997. From the date of implementation of this standard, the revised standard shall be invalid. This standard is proposed by the National Technical Committee for Metal Cutting Machine Tools Standardization. This standard is under the jurisdiction of Yantai Machine Tool Accessories Research Institute. The responsible drafting unit of this standard; Yantai Machine Tool Accessories Research Institute. The participating drafting units of this standard are Yantai Machine Tool Accessories Factory and Siping Machine Bed accessories factory. 1 Scope
Machinery Industry Standard of the People's Republic of China
Rotary Table
JB/T4370-96
This standard specifies the type, parameters, technical requirements, inspection rules and markings, packaging, storage and transportation of rotary tables (hereinafter referred to as rotary tables).
This standard applies to horizontal rotary tables, vertical and horizontal rotary tables and tilting rotary tables with worm gear indexing transmission. The types and parameters are mainly applicable to newly designed products.
2 Cited Standards
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. GB158—84
GB 1443—85
GB/T 220691
GB 9061-88
JB2670-82
JB/T3207-91
Types and parameters
3
T-slot
Dimensions and tolerances of self-locking cone of tool shank
Locate keys for machine tool fixture parts and components
General technical conditions for metal cutting machine tools
General rules for precision inspection of metal cutting machine tools
General technical conditions for packaging of machine tool accessories 3.1 The types of turntables are divided into horizontal type (Type 1), vertical-horizontal type (Type 1) and tiltable type (Type I), as shown in Figure 1. 3.2 The parameters of the turntable are recommended to be specified in Table 1. Approved by the Ministry of Machinery Industry on April 22, 1996
Horizontal (Type 1)
Collarable (Type ■)
Turntable Hand
Material Handwheel
Figure 1
Vertical and Horizontal (Type I)
Implemented on October 1, 1996
1
Hs
mm
mm
D
mm
Type 1
Type
Type
Type
Type I
Center Hole Mohs Diagram Cone (GB1443)
Center Hole (Diameter × Depth)
mmXmm
A(GB158)
mm
B(GB/T 2206)
mm
Tiltable angle (type 1)
()
Turntable handwheel scale value
()
Turntable handwheel vernier scale value
()
Note: Parameters in brackets should not be used as far as possible,
Technical requirements
JB/T4370-96
Table 1
200
100
180
150
130
100
3
250
125
210
185
160
30×6
12
14 (12)
315
140
260
230
200
140
4
400
170
320
280
250
40×10
14
18 (14)
500
210
380
345
300
160
5
630
250
460
415
360
50×12
18
22 (18)
0~90
1
10
4.1 General requirements
The safety, sanitation, and appearance quality requirements of the turntable shall generally comply with the provisions of GB9061. 4.2 Geometric accuracy
4.2.1 During inspection, the actual inspection sequence can generally be arranged according to the installation and disassembly of the inspection tools and the convenience of inspection. 800
1000
250
300
560
510
450
6
350
700
610
550
75×14
22
28 (22)
4.2.2 When the actual length is different from the length specified in this standard, the tolerance shall be converted according to the measurable length in accordance with 2.3.1.1 of JB2670: when the conversion result is less than 0.005mm, it shall still be calculated as 0.005mm. 4.2.3 The inspection items, tolerances and inspection methods of geometric accuracy are shown in Table 2. 4.3 Other functions
4.3.1 The lock systems of the turntable shall be reliable.
4.3.2 Each rotating part of the turntable should be flexible.
4.3.3. The reverse free travel of the turntable handwheel should not be greater than 6°. 2
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