JB/T 3580-1998 This standard adopts the Japanese JIS B 6158-93 "Rotary Center" in a non-equivalent manner and revises JB 3580.1~3580.3-84 "Rotary Center". This standard specifies the types and parameters, requirements, test methods, inspection rules, and product marking and packaging of ordinary, umbrella and insertion type rotary centers. This standard is applicable to the inspection and arbitration of the quality of the above products. JB/T 3580-1998 Rotary Center JB/T3580-1998 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T3580—1998
Swivel Center
Published on July 17, 1998
National Bureau of Machinery Industry
Implemented on December 1, 1998
JB/T3580—1998
This standard adopts the Japanese JIS B615893 "Swivel Center" in a non-equivalent manner, and revises the JB3580.1~3580.384 "Swivel Center", and its technical requirements are basically consistent with it. The main differences between this standard and JB3580.1~3580.3—84 are: 1. The main parameters add metric taper number:
2. The middle series of umbrella-shaped and plug-in-shaped swivel centers and the heavy series of ordinary swivel centers are added 3. The radial dynamic load and test method of the swivel center are added. This standard shall replace JB3580.1~3580.384 from the date of entry into force. This standard is proposed by the National Technical Committee for Standardization of Metal Cutting Machine Tools. This standard is under the jurisdiction of Yantai Machine Tool Accessories Research Institute. The responsible drafting unit of this standard: Dalian Machine Tool Accessories Factory. The main drafters of this standard: Wang Hongtao, Yan Zhuoling, Feng Yougang, Xia Jianguo, Hu Cunbin. Scope
Machinery Industry Standard of the People's Republic of China
Swivel Center
JB/T3580—1998
Replaces JB3580.1~3580.384
This standard specifies the types and parameters, requirements, test methods, inspection rules and product marking and packaging of ordinary, umbrella and insertion type swivel centers.
This standard applies to the inspection and arbitration of the quality of the above products. 2 Referenced 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 are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 23091
GB/T1443—1996
JB/T2326—94
JB2670—82
JB/T320791
JB556391
JB/Z18983
ZBJ5001389
3 Types and parameters
Methods for testing Rockwell hardness of metals
Self-clamping cone for machine tools and tool handles
Methods for compiling machine tool accessory models
Methods for testing the accuracy of metal cutting machine tools General inspection rules
General technical conditions for packaging of machine tool accessories Inspection and evaluation of the cone surface coloring method for metal cutting machine tools Preparation of random technical documents for machine tool accessories
Technical conditions for rust prevention of machine tools
The parameter dimensions of ordinary rotary centers are shown in Figure 1 and Table 1. 3.1
Approved by the State Machinery Industry Bureau on July 17, 1998 mm
Implementation on December 1, 1998
Cone number
JB/T3580-1998
The parameter dimensions of umbrella-type rotary centers are shown in Figure 2 and Table 2. * +*
Morse taper number
Note: Only applicable to the middle series umbrella-shaped rotary top 3
The parameter dimensions of the insert-type rotary top are shown in Figure 3, Figure 4 and Table 3. 3.3
Details are free of charge Figure 4
Morse taper number
Note: Only applicable to the middle series insert-type rotary top. 4 Requirements
4.1 Materials
JB/T3580-1998
60°, 75
4.1.1 The top shaft is made of T8 carbon tool steel or materials with better performance. 4.1.2 The body is made of 45 high-quality carbon structural steel or materials with better performance. 4.2 Heat treatment
60°, 75°, 90°
JB/T3580-1998
4.2.1 The heat treatment hardness of the cone surface of the top shaft shall not be less than 58HRC. 4.2.2 The heat treatment hardness of the cone surface of the body shall not be less than 40HRC. 4.3 Surface roughness
4.3.1 The maximum allowable value of the surface roughness R of the outer cone of the top shaft is 0.5um, and the maximum allowable value of the surface roughness R of the inner cone is 1.0um4.3.2 The maximum allowable value of the surface roughness R of the body cone is 0.5μm. 4.4 Cone contact accuracy
The ratio of the actual contact length of the body cone surface with the standard gauge to the working length shall not be less than 75% and shall be evenly distributed. 4.5 Geometric accuracy
The geometric accuracy, tolerance and inspection method shall comply with the provisions of Table 4. Table 4
Cone number
Axial load F
Shaft cone
Surface
Oblique circle
Shaft cone
Surface to
Ordinary type
Insertion type
Ordinary type
Body circle
Oblique circle jump of cone
Insertion type
Cone number
80-120
Indicator
Special inspection fixture
Force applying device
Indicator
Special inspection fixture
Inspection method
Refer to the relevant provisions of JB2670
The rotary top The tip is mounted on a special inspection tool, the indicator probe touches the cone generatrix of the top shaft vertically, and the body cone is positioned. Under the axial load specified in Table 5, the rotating top shaft is inspected. The rotating top is mounted on a special inspection positioning device (allowed to tilt 30°), the indicator probe touches the cone generatrix of the top shaft vertically, and the rotating body is inspected for the cone surface. JB/T3580-1998 The rotating top is operated for 30 minutes at the speed and axial load specified in Table 6, and the temperature rise shall not exceed 50℃. Table 6 Cone No. Axial load F Radial dynamic load The radial dynamic load P value of the rotating top shall be in accordance with the provisions of Table 7. 4
Cone number
Light series
Ordinary type
Insertion type
Medium series
Heavy seriesbzxZ.net
Medium series
Medium series
The rotating top should rotate lightly, flexibly and without blocking. 5
4.8.2 The dimensions and limit deviations of the taper handle of the body shall comply with the provisions of GB/T1443. 6
4.8.3 The surface of the product shall not have defects such as cracks, scars, burns and rust that affect the use and appearance. 5 Test method
Test method of radial dynamic load
As shown in Figure 5, the tested rotating top is installed on the testing machine, and the load P specified in Table 7 is applied to the radial direction of the top shaft. Figure 5
5.1.2 After driving the rotating top to rotate at a speed of 50~1001min for 30min, the parts of the rotating top shall not be damaged. Hardness test
JB/T3580-1998
The surface hardness of the top shaft should be tested on the conical surface, cylindrical surface or end surface close to the head, and the hardness of the conical surface of the body should be tested on the working surface of the body. The test should comply with the provisions of GB/T230. 5.3 Contact accuracy test
The contact accuracy test between the conical surface of the body and the standard gauge should comply with the specified method of JB5563. Other equivalent methods are allowed when there is no dispute.
5.4 Temperature rise test
5.4.1 The temperature rise measurement method of the umbrella-shaped rotary top is shown in Figure 6. At the speed and load specified in Table 6, the umbrella-shaped head is rotated, and the temperature rise is measured with a point thermometer immediately after stopping.
Temperature measurement point
5.4.2 The temperature rise measurement method of the ordinary type and insertion type rotary top is shown in Figure 7. At the speed and load specified in Table 6, the top shaft is rotated, and the temperature rise is measured with a point thermometer.
Temperature measurement point
6 Inspection rules
6.1 Each product can leave the factory only after passing the inspection. 6.2 The factory inspection shall include the contents of 4.3, 4.4, 4.5, 4.8 and Chapter 7. 6.3 Type inspection shall include all the contents of this standard. The tests of 5.1 and 5.4 shall be no less than 2 pieces each time. Type inspection shall be carried out in one of the following situations: a) Trial and type identification of new products or old products transferred to the factory for production; b) Products resume production after long-term suspension; c) Regular quality inspection of the enterprise or product inspection by the superior quality supervision department; d) Other situations where it is necessary to ensure that the product fully meets the requirements of the standard. 6
Marking and packaging
JB/T3580-1998
Manufacturer name or trademark at the appropriate position of the product (such as Figure 1, Figure 2, Figure 3a):
b) Product model.
Product model should comply with the provisions of JB/T23267.2
7.3 The product's rust prevention shall comply with the provisions of ZBJ50013. The product's packaging shall comply with the provisions of JB/T3207. 7.4
) Clearly mark:
The preparation of the product's accompanying technical documents shall comply with the provisions of JB/Z189. 7.5
Mechanical Industry Standard
Swivel Top
JB/T3580-1998
Published by the Mechanical Standardization Research Institute of the Ministry of Machinery Industry Printed by the Mechanical Standardization Research Institute of the Ministry of Machinery Industry (No. 2 Shouti South Road, Beijing: Postal Code 100044)
Format 880×1230
4Number of Words 16.000
Sheet 3/4
First Printing in October 1998
First Edition in October 1998
Print Quantity 00,001-500
Cost 1000 Yuan
98-107
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn866108 /
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