JB/T 3663.1-1996 Technical requirements for heavy-duty horizontal lathes

This standard specifies the requirements for the manufacture and acceptance of heavy-duty horizontal lathes. This standard applies to general-purpose heavy-duty horizontal lathes with a maximum rotation diameter of 1000~5000mm on the bed and a maximum workpiece weight between the centers greater than or equal to 10t. JB/T 3663.1-1996 Technical conditions for heavy-duty horizontal lathes JB/T3663.1-1996 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T3663.1—96
Heavy Horizontal Lathe
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
Heavy Horizontal Lathe
1 Subject Content and Scope of Application
Technical Conditions
This standard specifies the requirements for the manufacture and acceptance of heavy horizontal lathes. JB/T3663.1-96
Replaces JBn3663—84
This standard applies to general-purpose heavy horizontal lathes with a maximum rotary diameter of 1000 to 5000 mm on the bed and a maximum workpiece weight between the centers greater than or equal to 10 tons.
2Reference standards
GB5226
GB6576
GB9061
JB4117
JB4139
ZBJ50003
ZBJ50004
ZBn J50 008.1
ZBnJ50008.3
ZBJ50016
3 General requirements
General technical conditions for electrical equipment of machine tools
Machine tool lubrication system
General technical conditions for metal cutting machine tools
Precision of heavy horizontal lathes
Technical conditions for safety protection of metal cutting machine tools and machine tool accessories Metal cutting machine tools, determination of cleanliness
Determination of sound pressure level of noise of metal cutting machine tools Metal cutting machine tools
General technical conditions for machining parts
General technical conditions for assembly of metal cutting machine tools General technical conditions for hydraulic systems of metal cutting machine tools This standard specifies and supplements GB9061, ZBnJ50008.1, ZBnJ50008.3, etc. 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
The following accessories and tools should be supplied with the machine:
Special wrench, 1 set:
Adjustment shims, anchor bolts, nuts, washers for installation, 1 set; Lubricating oil gun, 1 piece;
The following special accessories can be supplied according to the agreement:
a. Milling head:
Grinding head:
Belt grinding head;
Static pressure center stand;
Approved by the Ministry of Machinery Industry on April 11, 1996
Implemented on October 19, 1996
Safety and Health
JB/T3663.1—96
5.1 The slide and tailstock should be equipped with limit position safety devices. 5.2 The wire dragging mechanism should be equipped with a reliable anti-iron chip device. 5.3 Both ends of the guide rails where the saddle, slide, and tailstock lower body are combined with the base should be equipped with protective scrapers. 5.4 Appropriate temperature measuring points should be set at the spindle bearing to accurately measure the temperature and temperature rise of the spindle bearing. 5.5 Inspect the machine tool noise in accordance with the provisions of ZBJ50004. The machine tool noise measurement should be carried out under the conditions of low, medium and high speeds of the main motion forward and reverse rotation and idling at medium speed of the feed motion. The sound pressure level of the whole machine noise should not exceed 85dB(A). 5.6 The handles of the small tool holder and the longitudinal slide plate are frequently used handles, and their operating force should be uniform within the travel range and should not exceed 120N; the handles and handwheels for the slide and tailstock sleeve are assessed as uncommon handles, and their operating force should not exceed 160N; the center frame and tailstock adjustment handles, their operating force should not exceed 200N.
5.7 When accepting machine tools according to this standard, the remaining acceptance items in JB4139 that are not specified in this standard, as well as the acceptance items specified in GB5226, GB6576 and ZBJ50016, must be inspected at the same time. 6 Processing and assembly quality
6.1 The bed, saddle, spindle box, slide box, tailstock upper body (or tailstock body) and other important castings should be aged after rough processing. 6.2 The lubrication of the machine tool guide pair, spindle pair, screw pair, worm gear pair and high-speed heavy-load gears and other major parts that are prone to wear should take wear-resistant measures corresponding to the service life.
6.3 The guide pairs between the saddle and the bed, the guide pairs between the horizontal slide and the saddle, and the guide pairs between the longitudinal slide and the rotary slide are important guide pairs, and wear-resistant cast iron, steel-inlaid guides, plastic-coated guides or high (medium frequency induction ignition) and other wear-resistant measures should be used. 6.4 The following joint surfaces should be assessed according to the requirements of "important fixed joint surfaces": The joint surface of the spliced ​​bed:
b. The joint surface between the spindle box and the bed or the spindle box base; c. The joint surface between the spindle box base and the bed;
The joint surface of the upper and lower bodies of the tailstock;
The joint surface between the saddle and the slide box;
The joint surface between the feed box and the bed or the spindle box base; The joint surface between the spindle end face and the faceplate;
h. The joint surface between the rack, gear ring and the base; i. The joint surface between the lead screw, the guide rod bracket and the base . Important fixed joint surfaces should be tightly combined. After tightening, they should not be inserted when checked with a 0.04mm feeler gauge, but the local (2 to 3 places) insertion depth is allowed to be no more than 20mm: the length of the inserted part is less than or equal to 1/5 of the length of the joint surface, but if it is not more than 100mm, it will be counted as 1 place. 6.5 The joint surface between the rotary slide and the cross slide should be assessed according to the requirements of "particularly important fixed joint surface". 6.6 The guide pairs of the saddle and the bed, the cross slide and the saddle, the longitudinal slide and the tool holder should be assessed according to the requirements of static pressure and sliding (rolling) guides. 6.7 The guide pairs of the tailstock and the bed, and the center frame and the bed should be assessed according to the requirements of "displacement guides". 6.8 The reverse idle travel of the handwheel and handle with a scale device should not exceed the requirements of Table 1. Table 1
Handle part
Reverse idle travel
Horizontal slide plate
Vertical slide plate, tool holder
6.9 The faceplate must be subjected to static balance test and calibration. 6.10 Inspect cleanliness according to the provisions of ZBJ50003. JB/T3663.1—96
6.10.1 The internal cleanliness of the spindle box and slide box shall be sampled and inspected by weight method, and the content of impurities and dirt shall not exceed 400mg/L (spot check) 6.10.2 The cleanliness of the hydraulic system oil shall be sampled and inspected by weight method, and the content of impurities and dirt shall not exceed 200mg/L (spot check) 6.10.3 Other parts shall be inspected by visual inspection and touch method, and there shall be no dirt. The following important positioning taper pins shall be inspected by color coating method, and their contact length shall not be less than 60% of the working length. 6.11
Location pins for splicing the bed and bed;
Main Locating pins between the axle box and the base:
Locating pins between the spindle box base and the bed:
Locating pins between the bed saddle and the slide box;
Locating pins between the feed box and the bed;
Locating pins between the front and rear bearings of the spindle and the spindle box. Locating pins connecting the lead screw and the guide bar bracket to the base; g.
Locating pins for connecting the long lead screw and the long guide bar in sections. h.
7 Machine tool idle operation test
7.1 The main motion mechanism of the machine tool should be operated in sequence from the lowest speed, and the operation time of each speed level should not be less than 2 minutes. The machine tool with stepless speed regulation can be operated at low, medium and high speeds. The highest speed operation time should not be less than 1 hour, so that the spindle bearing reaches a stable temperature. The temperature and temperature rise of the bearing are measured near the spindle bearing. The value should not exceed the provisions of Table 2. Table 2
Bearing type
Sliding bearing
Rolling bearing
The feed mechanism should be tested for idling at low, medium and high feed rates (feed speeds), and it is allowed to be tested simultaneously with the main motion test. The time for each gear should not be less than 2 minutes
The fast moving mechanism should be tested for fast moving. The number of reciprocating times of the tailstock, saddle and slide plate test should not be less than 3 times, and the stroke should not be less than half of the full stroke.
7.2 The actual deviation of the spindle speed and feed rate should not exceed 10% of the indicated value on the label. 7.3 Use an appropriate speed to start and stop the main motion and feed motion in the forward and reverse directions for 5 times continuously to test the flexibility and reliability of the action.
7.4 The idling power of the main transmission system (excluding the no-load power of the main motor) should not exceed 25% of the rated power of the main motor. 8 Machine tool load test
This series of machine tools should be subjected to the following load tests. When the manufacturer does not have the test conditions, it can also be carried out at the user's factory with the user's consent: Machine tool operation test with maximum workpiece weight (spot check): a.
b. Maximum torque test of machine tool main transmission system: Maximum cutting resistance test of machine tool;
JB/T3663.1-96
d Maximum power test of machine tool main transmission system (spot check): Test of machine tool main transmission system exceeding maximum torque by 25% for a short time (spot check): e
f. Test of machine tool exceeding maximum cutting resistance by 25% for a short time (spot check) 8.1. The operation test of the machine tool carrying the maximum workpiece weight, using low speed and high speed specified in the design, the operation time should not be less than 10 minutes. 8.2. The maximum torque, maximum cutting resistance and maximum power of the main transmission of the machine tool 1 test, the test piece material, cutting specifications, etc. shall be in accordance with the design documents.
Note: I Maximum power refers to the design power. bzxz.net
8.3. The test of the main transmission system of the machine tool exceeding the maximum torque and maximum cutting resistance specified in the design by 25% for a short time, the test time shall not be less than 1 minute. For machine tools larger than 1600mm, only the maximum torque and maximum cutting resistance tests are performed. 8.4. The slide box equipped with a feed overload protection device should be safe and reliable during the load test. When the longitudinal feed resistance reaches 125% of the maximum cutting resistance, it should be able to work normally in a short time, and it should stop working when it exceeds 125%. Note: After the overload test, the overload protection device should generally be adjusted back to the full load position. 5. During each load test, the machine tool should work smoothly and reliably. 8.5
9 Machine tool precision inspection
Machine tool precision inspection shall be carried out in accordance with JB4117.
Items G7, G11, and G13 shall be inspected at medium speed and stable temperature. 3 The test specifications for working precision inspection shall be in accordance with the design documents. 9.3
4 The maximum allowable value of the surface roughness R of the test piece during working precision inspection is 2.5um. 9.4
Additional instructions:
This standard was proposed by the National Technical Committee for Standardization of Metal Cutting Machine Tools. This standard is under the jurisdiction of Wuhan Heavy Machine Tool Research Institute. This standard was drafted by Qiqihar Heavy Lathe Research Institute. This standard was first issued in 1984.
Mechanical Industry Standard
Technical Conditions for Heavy Horizontal Lathe
JBT3663.1-96
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)*
1/16 Printing Sheet 1/2 Number of Words 8000
Format 880×1230
First Edition in October 1996
First Printing in October 1996
Number of Prints 1-500
Price 500 Yuan
96-064
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn9699
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