JB/T 9886-1999 Technical requirements for boring and facing heads of modular machine tools
Some standard content:
IC5 25. mh 99
Machinery Industry Standard of the People's Republic of China
JB/T9886-1999
Combination Machine Tools
Technical Conditions for Boring and Facing Heads
1999-05-20 Issued
State Bureau of Machinery Industry
Implementation on 2000-01-01
JE9886-1999
This standard is revised on the basis of ZB5%6-BB "Technical Requirements for Preparation and Inspection of Unsharp Holes and Facing Heads for Combined Machine Tools in 1988": This standard specifies and supplements the standards such as "Technical Requirements for Machine Tools for Use Before 1988" and this standard is consistent with the technical content of ZBJ5F006-1988, and only the relevant provisions have been recompiled. This standard replaces ZDJ5B00688. This standard is called the Metal Cutting Machine Tool Standardization Technical Committee after the release of this standard. The responsible unit for this standard is Dalian Modular Machine Tool Research Institute. This standard was first issued in 1989.
1 Scope
Machinery Industry Standard of the People's Republic of China
Modular Machine Tools
Boring and Facing Heads
Technical Conditions
This standard defines the manufacturing and acceptance requirements for boring and facing heads of modular machine tools. The standard is applicable to modular boring and facing heads with a nominal size of 100-630mm. 2. Cited Standards
JB/T0886-1999
5%6-88
The texts included in the above-listed standards have become the provisions of this standard through citation in this standard. When this standard is published, the versions shown are valid. All standards will be revised. All parties using this standard should explore the possibility of using the latest versions of the listed standards. GET3668.9—1981
GAT 5900—1997
GD:T 9061—198R
JB:T t5341993
JB.T2462.26—1999
JB/T2462.27—1999
J3:T 3041—1999
JB[3971994
JB/T9872-1999
JB-T98741999
J/T10051.1999
3 General requirements
Common parts of combined machine tools Dimensions of spindle parts, yokes, interchangeable parts and faceplates Technical conditions for combined cutting machine tools
General technical conditions for combined machine tools
Combination parts. Single-axis boring and facing head small combination machine technology components, facing head combination machine tool hole facing head inspection
metal cutting machine tool gray cast iron parts technical conditions metal uniformity measurement machine tool machine addition general technical conditions metal hot cutting machine tool assembly general technical conditions Jinbo cutting machine tool pressure system also uses technical conditions when inspecting and modifying the hole facing head according to this standard, it is necessary to conduct the remaining inspection items in GB/T9061, JB/T9872, JH/987: JH1534 and other standards that are not specified in this standard, 4 Random accessories
4.! In order to ensure the basic performance of the boring and facing head, the speed change gear, pulley and other parts should be replaced according to user requirements. 4.2 The manufacturer should provide easily damaged sealing parts, the number of which should be twice the number of the end faces of the holes used. 4.3 The assembled parts must be equipped with cumulative fixing pins and locating pins (effective locating chains) for installation and multiple lifting rings and nails for lifting. Note: Ton machine parts should be marked with relevant marks and specifications. 5. Quality control 5.1 General requirements Approved by China Machinery Industry Bureau on May 20, 1999 and implemented on January 1, 2000 JE/T9886-1999 S.1.1 The connection dimensions of the end head of the wall hole should comply with the single-axis quenching and lathe end head parts in GBT3668.9, JB.T2462.26, JB.T2462.27 5.1.1 Or according to the technical specifications of the iron parts, it should comply with the provisions of B/[397 5.1.3 After this test, the parts should be sealed with oil-resistant plugs (paper, gauze, wood ink and other foreign objects are prohibited) 5.2 The structural type and connection dimensions of the front end of the main shaft should comply with the provisions of GB 5900. 5.3 The diameter, thickness and connection dimensions of the cutter disc and the shaft end shall comply with the provisions of [BT2462.27. 5.4 During assembly, all sealing surfaces and related parts shall be lubricated with lubricating oil to prevent damage to the seal. 5.5 In addition to the color fading method, the sliding plate on the cutter disc must also be inspected with a 0.02mm ruler; the insertion depth of the ruler between the sliding surface of the guide bar and the pressure plate end shall not exceed 6mm. 3,6 The radial feed cylinder must be tested separately. 5.6.1 Test run and stroke measurement
Install the radial feed cylinder on the corresponding test bench and perform full effective action under no-load conditions for ? times. At this time, no abnormal phenomena such as leakage and impact shall be observed. When returning, the piston of the oil cylinder shall be stopped at both ends of the stroke respectively, and the length of the full stroke of the disc shall be measured. The value shall meet the design requirements.
5.6.2 Test of resistance to movement of piston and piston rod When the piston rod is not under load (the piston cavity can discharge oil freely), force is applied to the piston rod cavity without a stopper. At this time, the pressure increases from small to large, and the piston rod moves outward at a certain feed speed. The pressure required for measuring the pressure shall not exceed the values listed in Table 1. The values in Table 1 are only applicable to the piston in the form of OU, X, or Y. 2. Standard pressure, which is the "gauge" pressure of the hydraulic gauge 5,6.3. Leakage inside the oil cylinder Www.bzxZ.net
. Open the piston rod cavity and let the pressure oil in. Unscrew the joint of the piston rod cavity and let the leakage port upward. Let the pressure of the oil enter the cylinder and make it reach 5.00MPa step by step. Keep the pressure at 308, then measure the amount of fluid discharged from the leakage port as the leakage volume per minute, but it shall not exceed the values listed in Table 2:
. Hole diameter
: The table only uses the seals adopted for active damage. U, X, form. 0.8
5.54 Quality inspection
JB/T9886-1999
Under full load (5.00MPa) working conditions, the live run will reciprocate for 30 times: At this time, the oil pipe joints and the sleeve seals of the covers are not allowed to be painted with oil, and the seals at the seals cannot be completely sealed. 5.6.5 Stability of the movement of the live rod
When the live rod is not under load, the pressure oil is sent to the rod cavity without the live sleeve, and the live fiber cavity maintains 0. 3-0.30MPa back bed, make the piston rod move forward at the minimum selected speed specified for the component, then the movement of the piston rod should be smooth, use a dial indicator to check its movement, the needle should rotate smoothly, and the jump should not exceed 0.0mm. 6 Dry operation test
6.1 The technical conditions of the hydraulic system of the boring machine end face head must comply with the provisions of T151.2 Install the chain hole turning end face head on the corresponding test machine and carry out an dry operation test of not less than 2h. At this time, the specified door skirt ring must be achieved.
When the main vehicle speed is manually changed, all speed seats should be tested. The conversion action should be accurate and reliable, and it should be started from the lowest speed. The operation of the grade should not be less than m. At the highest speed, it should be operated until the main shaft bearing reaches the specified temperature (less than min).
When using the exchange gear and pulley to change the speed, it can be operated at low, medium and full speed. 6. To check the idling rate of the main transmission system (excluding the idling power of the motor itself), it should not exceed 25% of the rated power of the motor: when the batch is produced, it can be checked at 5% of the batch, but not less than 1 unit. 6.4 The spindle speed should meet the design requirements. The error should not exceed ±5%. 5. When the high-speed operation is running, there should be no obvious movement on the flat surface. 6.6 The movement of the slide on the blade should meet the requirements of JB/T2462.27, and the range of its selection should meet the design requirements. 6.? The slide on the buying plate shall be tested for 3 times with low, medium and high feed rates and rapid movement to check the accuracy and sensitivity of the operating mechanism. When the slide changes from rapid movement to working feed, there shall be no impact. There shall be no creeping during working feed, and the slide shall move smoothly within the specified range. And the reliability of the gear, gear system or connection shall be checked according to the variable displacement; load test
7.1 Main conditions for load test:
) Corresponding test line:
Material of the test piece: cast iron or 45# steel
c) Corresponding carbide tool,
) The tool used for the end face of the end hole during the test shall meet the following specifications: The diameter of the hole or the diameter of the end hole shall be calculated according to [1]: = (060.9) During the test: D.——The maximum bore diameter of the component, mm=the maximum diameter of various full bore end faces as shown in Table 3, 3.2 according to the specified test conditions, use the cutting degree and cutting amount that reach the design calculation to carry out boring, end face or quasi-circular test, all mechanisms should work normally, and the test piece surface should not have obvious damage or burns. 3
Double head art size
Expanded support point diameter
Maximum face diameter
3B/T9986--1999
The number is shown in Table 4.
Inspect the maximum feed rate of the mud plate on the blade helmet, Table 4
Headstock size:
Emotional board maximum entry 27
At this time, the Wandao transmission device and the transmission parts on the blade disc, 1. All operations should be normal, and the pressure control system should be sensitive, accurate, and stable. 4 Adjust the feed rate of the Wandao slide to the minimum [final feed rate, inspect the feed rate change of the piece at the maximum feed force and load, and its change rate is shown in formula (2) and shall not exceed ±15%, and the test shall be repeated for 10 times , at this time, the sliding feed should be adjusted, and there should be no problems or problems. 5-5100%
in the battle: 6-
reverse feed speed change rate:
S-average feed rate without adding load, m'min; 5 plate limit feed speed under the specified load, m and m, 8 work precision inspection
chain hole turning end face head work precision inspection should comply with the provisions of JB Hall 3041: 9 geometric precision inspection
the error hole turning end face will be called precision should meet the requirements of 304! The items specified in the inspection are carried out by themselves, and the gun age results are recorded in the production and hanging certificate
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