This standard specifies the requirements for the manufacture and acceptance of radial milling machines. This standard applies to radial milling machines and universal radial milling machines with a worktable width of 200~320mm. JB/T 3697-1996 Technical conditions for radial milling machines JB/T3697-1996 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T3697-96
Radial Milling Machine
Published on April 11, 1996
Technical Conditions
Implemented on October 1, 1996
Ministry of Machinery Industry of the People's Republic of China
Mechanical Industry Standard of the People's Republic of China
Radial Milling Machine
1 Subject Content and Scope of Application
Technical Conditions
This standard specifies the requirements for the manufacture and acceptance of radial milling machines. This standard applies to radial milling machines and universal radial milling machines with a worktable width of 200~320mm. Cited standards
GB5226
GB9061
JB3696
JB4139
ZBJ50003
ZBJ50004
ZBnJ50008.1
ZBnJ50008.3
3—General requirements
Machine tool electrical equipment
General technical conditions
General technical conditions for metal cutting machine tools
Accuracy of radial milling machines
Metal cutting machine tools and machine tool accessories|| tt||Technical conditions for vehicle safety protection
Determination of cleanliness of metal cutting machine tools
Metal cutting machine tools
Metal cutting machine tools
Metal cutting machine tools
Determination of noise sound pressure level
General technical conditions for machined parts
General technical conditions for assembly
JB/T3697—96
Replaces JB3697-84
This standard specifies and supplements GB9061, ZBnJ50008.1, ZBnJ50008.3 and other standards. When accepting machine tools according to this standard, the remaining acceptance items in the above standards that are not specified in this standard must be inspected at the same time. 4 Accessories and tools
4.1 The following accessories and tools should be supplied randomly: a. Intermediate sleeve, 1 set:
b. End milling cutter bar, 1 set
c. Pull rod, 1 set;
d. Drill chuck connecting rod, 1 piece:
e. Special adjustment tool, 1 set:
f. Machine iron, 1 set.
Note: Export machine tools are supplied according to agreement
4.2 The following special accessories can be supplied according to agreement: a. Spring chuck:
b. Plug;
c. High-speed milling head:
d. Swivel head:
e. Right-angle head;
f. Horizontal milling bracket;
g. Micro-motion boring head:
h. Flat-nose pliers.
Approved by the Ministry of Machinery Industry on April 11, 1996
Implemented on October 19, 1996
5 Safety and Health
JB/T 3697-96
5.1 The longitudinal and transverse movements of the worktable and the vertical movement of the lifting platform shall be limited or have safety devices to prevent collision. 5.2 The parts of the guide rails of the bedpost and the lifting platform, and the guide rails of the lifting platform and the bed saddle that are easily worn by dust and debris shall be equipped with protective devices. 5.3 During motorized feeding or rapid movement, when the peripheral speed is greater than 20m/min, the operating handwheel (handle) shall be automatically disengaged and shall not rotate, or a solid handwheel without spokes and handles shall be used. 5.4 The speed change, reversing, stopping and locking mechanisms shall be safe and reliable. 5.5 Moving parts that are not allowed to move at the same time shall not be linked. When the machine tool is stopped, the independent feeding movement shall stop no later than the main movement. 5.6 The noise of the machine tool shall be tested in accordance with the provisions of ZBJ50004. The noise measurement of the machine tool shall be carried out under the condition of idling at various speeds. The sound pressure level of the whole machine shall not exceed 80dB (A).
5.7 Within the working stroke range, the operating force of the handwheel (handle) shall not exceed the provisions of Table 1. When testing the operating force of the vertical moving handle and the horizontal handwheel (handle), the workbench is in the middle of the stroke. Table 1bZxz.net
Handwheel (handle)
Longitudinal and transverse movement of worktable
Handwheel (handle)
Spindle sleeve movement
Handwheel (handle)
Handwheel (handle)
Handle for vertical movement of lifting platform
Width of worktable
>200~250
Operating force
>250-320
5.8When accepting machine tools according to this standard, the remaining acceptance items in JB4139 that are not specified in this standard and the acceptance items specified in GB5226 and other standards must be inspected at the same time. 6 Processing and assembly quality
6.1 The bed column, lifting platform, worktable, bed saddle and milling head body are important castings. After rough processing, they should be aged or other measures should be taken to eliminate internal stress.
6.2 For the easily worn parts of the machine tool such as the spindle, spindle sleeve, screw pair, worm gear pair and high-speed and heavy-loaded gears, wear-resistant measures corresponding to the service life shall be adopted.
6.3 The following important guide rails shall adopt wear-resistant cast iron, steel inlay, plastic coating or high (medium) frequency induction ignition and other wear-resistant measures: a. Lifting platform and bed column guide rails;
b. Lifting platform and bed saddle guide rails;
c. Workbench and bed saddle guide rails.
6.4 The following joint surfaces shall be assessed according to the requirements of “important fixed joint surfaces”: a. Joint surface between the vertical screw support and the base of the lifting platform; b. Fixed joint surface of the pressure plate;
c. Joint surface between the longitudinal and transverse screw brackets;
d. Joint surface between the milling head body and the transmission box;
e. Joint surface between the bed post and the base,
JB/T 3697—96
6.5 The fixed joint surface between the guide rail pressure plate and the lifting platform shall be assessed according to the requirements of “particularly important fixed joint surfaces”; 6.6 The following guide rail pairs shall be assessed according to the requirements of “sliding guide rails”: a. Guide pair between the lifting platform and the bed post;
b. Guide pair between the lifting platform and the bed saddle;
c Guide pair between the workbench and the bed saddle.
6.7 The following guide rails or rotating surfaces shall be assessed according to the requirements of "relocation guide rails": a. The rotating surface of the milling head and the rocker arm (or support); b. The guide rails of the rocker arm and the turntable;
c. The rotating surface of the turntable and the bed column.
6.8 The reverse idle stroke of the handwheel (handle) with a scale device directly connected to the transmission screw shall not exceed 1/20r; the reverse idle stroke of the handwheel (handle) with a scale device not directly connected to the transmission screw shall not exceed 1/10r. 6.9 The relevant parts rotating at high speed in the main transmission system shall be subjected to dynamic balancing tests. 6.10 Check the cleanliness according to the provisions of ZBJ50003, among which the cleanliness of the inside of the feed box shall be inspected by weight method, and its impurities and dirt shall not exceed 400mg/L (spot check).
7 Machine tool idle running test
7.1 Temperature rise test
The main motion mechanism of the machine tool should start from the lowest speed and run in sequence. The running time of each speed level shall not be less than 2min. Machine tools with exchange gears, belt drive speed change and stepless speed change can be operated at low, medium and high speeds. When running at the highest speed, the time shall not be less than 1h, so that the spindle bearing reaches a stable temperature, and its temperature and temperature rise are measured near the spindle bearing. The temperature shall not exceed 70℃, and the temperature rise shall not exceed 40℃. 7.2 Test of main motion and feed motion
7.2.1 The actual deviation of the spindle speed of each level of step transmission shall not exceed -2%~+6% of the indicated value on the label. The actual deviation of the feed speed shall not exceed -5%~+3% of the indicated value on the label. The actual deviation of the spindle speed and feed speed of stepless speed change shall not exceed ±10% of the indicated value on the label.
7.2.2 Test the main motion of the machine tool step by step, and its motion shall be smooth and reliable. 7.2.3 Test the feed motion of the machine tool with low, medium and high feed speeds and fast speeds. The motion should be smooth and reliable, with no vibration at high speeds and no obvious creeping at low speeds.
7.3 Action test
7.3.1 Test the main motion mechanism with medium speed and the feed motion mechanism with medium feed speed for 10 consecutive forward and reverse start, stop and brake actions. The action should be flexible and reliable. 7.3.2 The action of the speed change and reversing mechanism should be flexible and reliable. 7.3.3 The rotation of the turntable and milling head should be flexible and reliable. 7.3.4 The manual operation of the workbench should be flexible and reliable in all directions. The movement within the travel range should be flexible and reliable. 7.4 No-load power test
The no-load power of the main transmission system (excluding the no-load power of the main motor) should not exceed 40% of the rated power of the main motor. 7.5 Overload protection test
Test the overload protection of the feed system according to the design requirements. It should be reliable. 8 Load test of machine tools (performed in accordance with the test specifications compiled by the design) 8.1 The machine tools shall be subjected to the following load tests:
a. Operation test of the machine tool bearing the maximum weight of the workpiece (spot check); b. Maximum torque test of the main transmission system of the machine tool: 3
JB/T3697—96
c.d. Test of the machine tool main drive system exceeding the maximum torque by 25% for a short time; d. Test of the machine tool's maximum cutting resistance (not for manually fed machines): e. Test of the machine tool exceeding the maximum cutting resistance by 25% for a short time (not for manually fed machines); f. Test of the machine tool main drive system reaching maximum power (spot check). 8.2 Operation test of the machine tool bearing the maximum weight of the workpiece 8.2.1 Use a weight equivalent to the maximum weight of the workpiece specified in the design as the workpiece and place it in the middle of the worktable to make the load uniform.
8.2.2 Reciprocate three times in the middle of the longitudinal, transverse and vertical strokes of the worktable, and move 1/4 of the stroke for testing. Machine tools with motorized feed are tested at the lowest and highest feed speeds and fast speeds respectively. 8.2.3 During the test, the machine tool should operate smoothly and reliably without obvious creeping. 8.3 Test of the maximum torque of the main transmission system of the machine tool and the test of exceeding the maximum torque by 25% for a short time 8.3.1 Select an appropriate speed within the constant torque speed range of the machine tool spindle, change the feed speed or cutting depth, so that the machine tool reaches the maximum torque and 125% of the maximum torque specified in the design. 8.3.2 Cutting specimen material: HT150. Cutting tool: end mill. 8.3.3 During the test, all parts of the machine tool should work normally and reliably. 8.4 Test of the maximum cutting resistance of the machine tool and the test of exceeding the maximum cutting resistance by 25% for a short time 8.4.1 Select an appropriate spindle speed within the constant torque speed range of the machine tool spindle, change the feed speed or cutting depth, so that the machine tool reaches the maximum cutting resistance and 125% of the maximum cutting resistance specified in the design 8.4.2 Cutting specimen material: HT150. Cutting force tool: cylindrical milling force. 8.4.3 During the test, the machine tool should work normally, each motion mechanism should be flexible and reliable, and the overload protection device should be normal and reliable. 8.5 Test of the machine tool main transmission system reaching maximum power 8.5.1 Within the constant power speed range of the machine tool spindle, select an appropriate speed, change the feed speed or cutting depth, so that the machine tool reaches the maximum power specified in the design (generally the rated power of the main motor). Note: When the maximum speed of the machine tool spindle is higher than 2000rmin, select a speed not less than 1000r/min. 8.5.2 Cutting test piece material: 45 steel. Cutting tool: end mill. 8.5.3 During the test, all parts of the machine tool should work normally and reliably without obvious chattering phenomenon. Machine tool accuracy inspection
Accuracy inspection is carried out in accordance with JB3696. The cutting specifications for working accuracy are specified in the design documents. 9.1
9.2 The following accuracy items should be inspected at medium speed and stable temperature: a. G3 The verticality of the worktable surface to the vertical movement of the spindle sleeve: b. G7 The radial runout of the axis of the spindle taper hole: c. G8 The verticality of the spindle rotation axis to the worktable surface. 9.3 During the working accuracy test, the surface roughness R value of the test piece shall not be greater than 3.2um (machine tools with manual feed are not tested). Additional Notes:
This standard was proposed by the National Technical Committee for Standardization of Metal Cutting Machine Tools. This standard is under the jurisdiction of the Beijing Milling Machine Research Institute. This standard was drafted by Nantong Machine Tool Factory. This standard was first issued in 1984.
Mechanical Industry Standard
Technical Conditions for Radial Milling Machines
JBT3097-96
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880×12301/16 Printing Sheet 1/2 Number of Words 8000First Printing in August 1996
First Edition in August 1996
Number of Prints 1-500
Price 500 Yuan
96-016
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn69
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