JB/T 9891-1999 Technical requirements for multi-axis boxes of modular machine tools
Some standard content:
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Machinery Industry Standard of the People's Republic of China
[B/T 9891--1999
Combination Machine Tools
Multi-axis Box
1999-05-20 Release
Technical Conditions
2000-01-01 Implementation
State Machinery Industry Bureau
JE/T9891-1999
This standard is revised on the basis of "Technical Conditions for Manufacturing Multi-axis Boxes for Combined Machine Tools" (B02-9 Technical Conditions for Acceptance of Multi-axis Boxes for Known Machine Tools). This standard is a concretization and supplement to GB/T9061-19" General Technical Conditions for Metal Cutting Machine Tools. This standard is in line with the technical content of 2J5811-89 and 2J5812-9. Only these two standards are merged and reorganized according to relevant regulations. This standard replaces 2BnJ58011-89 and ZBJ58012-89 from the implementation of this standard. This standard is proposed by the National Technical Committee for Standardization of Metal Cutting Machine Tools. This standard is drafted by Dalian Modular Machine Tool Research Institute under the jurisdiction of the Association's Modular Machine Tool Branch. This standard was first issued in 1989 and was approved by the Machinery Industry Standard of the People's Republic of China. Modular Machine Tools Multi-axis Box Technical Conditions This standard specifies the manufacturing and acceptance requirements for multi-axis boxes of modular machines. This standard applies to the following multi-axis boxes (including tapping multi-axis boxes): 1 Referenced Standards Z5801189 ZHJ58 U189
The following standards contain clauses that, through reference in this standard, constitute clauses of technical standards. When this standard is published, the latest version is valid. All standards will be revised. Therefore, the parties using this standard should explore the possibility of using the latest version of the following standards. GB:T366R.1—1983
GB.T 3668.10—1983
GB.T9061—988
GB.T[0095—1988
JB/T 1534 ...1993
JBT3043—1999
JB/T9872—1999
JB/[9874—1595
3—General requirements
Dimensions of multi-axis boxes and input shafts of common parts of modular machine tools, dimensions of the ends of multi-axis boxes and adjustable supports of common parts of modular machine tools, general technical conditions for Jinfeng classification of machines
New line cleaning Wheel accuracy
Combination machine general technical conditions bzxz.net
Combination machine table shaft box combing test
All other cutting machine tools must be inspected by mechanical processing parts. Technical conditions for cutting machine tools, assembly general technical conditions 3.1 When accepting multiple speed boxes according to this standard, it is necessary to simultaneously accept other items that have not been accepted by this standard, such as 0B9061, JBT972, JB/T9874, JB1534, etc. : 3.2 The box size of the standard multi-axis box shall comply with the provisions of GBT3668.1, and the size of the adjustable connecting rod of the shaft shall comply with the provisions of GB3668.10.
3.3 The multi-axis box is equipped with a handle shaft for the rotating shaft. The handle shaft should be located near the work position and convenient for operation. 3.4 The gears, bearings and other transmission parts in the multi-axis box must have sufficient lubrication. 3.5 For the multi-axis box with self-circulating oil lubrication, its lubrication system should have a device to record the oil supply (such as an oil distributor) and an oil mark to indicate the minimum oil level.
3.6 The lubricating oil shall not leak out along the pipe joints, the interface of the box body, and the shaft handle shaft. 4 Safety and Health
4. In the transmission system of the multi-axis box, the locking nuts on the main shaft and the transmission must be loose, and other links that may be loose must also be equipped with anti-loosening devices.
4.2 In order to be safe and tight, the locking seal of the main shaft and the connecting rod should not exceed the outer diameter of the main shaft end. Approved by the State Bureau of Machinery Industry on May 30, 1999 and implemented on January 1, 2001
J-T9891-1999
4.3 The moving parts (except the main shaft and the auxiliary shaft) that extend out of the multi-axis box or are attached to the box should generally have protective devices. 44 The multi-axis box must have lifting screw holes and corresponding parts that are suitable for the weight of the multi-axis box. 5 Processing and assembly quality
5. 1 Quality of rotating parts
5.1.1 The grades and properties of various castings used should comply with the provisions of the corresponding standards. 5.1.2 The multi-axis box body, front cover, rear cover and other box parts should not have cracks. There should be no sand holes, pores and shrinkage on the joint surface and exposed processing surface. The defects on the casting that do not affect the use and appearance shall be repaired in accordance with the provisions of the relevant technical standards. The interior of the box body must be cleaned and then filtered with anti-rust and oil-resistant filters. The box body is not allowed to be oiled. 5.1.3 Multi-axis box body, front cover, rear cover and other heavy castings must be aged after 1. 5.2 Quality of 1 || tt || 5.21 The parts shall comply with the relevant provisions of the "Article 5.2.2 Additive". The chamfers of the parts shall be specified in the drawings. If the requirements are not specified (except for the specified requirements), they must be chamfered. The chamfer width and negative angle of the mechanical 1 and the European surface of the multi-axis box body, front cover, rear cover and other parts shall comply with the requirements of the drawings. 5.2.3 The hardness of shafts, transmission shafts, guide rods, guide guides and other parts with tumor resistance requirements shall be higher than the hardness of the bearings, and the hardness of the bearings shall not be lower than 10S2RC for dynamic bearings, and not lower than 421RC for rolling shafts; when the shaft frequency of the multi-axis (including the transmission shaft) is used as the driving bearing, its hardness should not be lower than 1RC. The hardness of the guide rods and guide porcelain shall generally not be lower than 54IIRC. 5.1.4 The surface of the multi-axis housing, front cover, rear cover and other important castings shall not have machining marks and obvious knife marks. .2.5 The limit deviation of the center distance of the companion hole of the multi-axis box with gears shall not be greater than ±8/2 (except Table 1). The axis parallelism tolerance shall generally not exceed the requirements of Table 2,
Box body over-mild centering selection
limit deviation +TT8.2
Support distance of auxiliary bearing holes
Axis parallelism limit tolerance,
>50 -80
>$0~[20
120-80
> 180 -250> 250 -315
>160-25D
315-40m
>400-50
>250-400
5.2.6 The precision of the transmission gear in the multi-axle box should generally meet the 7 dimensions specified in 10095, and the roughness R should be 1.6μm. The tooth surface hardness should not be less than 54HR. The teeth of the sliding wheel should be polished. 5.3 Assembly
5.3 The multi-axle box should be assembled according to the assembly process regulations, and the parts and components (including external parts) assembled on the case shaft should meet the weight requirements. The sleeves not specified in the drawings shall not be placed. 5.3.2 For the gears of the related platforms in the multi-axis system, when the wheel width is less than or equal to 20mm, the axis misalignment shall not be greater than 1mm: when the rim width is greater than 20mm, the axis misalignment shall not exceed % of the rim width and shall not be less than 5mm: when the rim width of two matching gears is greater than 20mm, the axis misalignment shall be calculated according to the shorter one: 2
TB/T 9891—1999
5.3.3 The mating surface between the shaft housing and the shaft cover is an important fixed joint surface and shall be tightly fitted. After tightening, it shall not be inserted when inspected with a 0.04mm plug.
5.3.4 The joint surface between the multi-axis housing and the rear cover and the joint surface between the cover and the power box are particularly important joint surfaces. In addition to the inspection with coloring, they shall be inspected with a 4mm ruler before and after tightening, and shall not be inserted. Juice: Carefully check the 4m base ruler before fixing, and do not allow repair or knocking on the matching surfaces of the main shaft, transmission shaft, gears, etc. and the workpiece during assembly. .3.6 The bearings, dynamic bearings, quasi-dynamic bearings, side bearings, gears and various parts in the sliding system of the multi-axis box should be cleaned and washed during assembly. The multi-axis box is not allowed to have chips and other dirt inside. 5.4 Appearance 5.4.1 The outer surface of the multi-axis box should have the protrusions, depressions, and other changes specified by the net blocking technology. 5.4.2 The anti-expansion cover on the multi-axis box should be neat and symmetrical, and should not be warped or depressed. 5.4.3 The edges of the joint surface of the front cover, rear cover, upper cover, side cover and multi-axis box body should be neat and symmetrical, without any misalignment, and the asymmetry of the position should not exceed the requirements of Table 3:
The minimum side length
> 5 (M-12.5
1250-3150
The misalignment is measured by the body
5.4.4. The front cover, rear cover, upper cover, and the end of the pin used for fastening the axle box body should not protrude from the surface of the cover, and there should be no contact between the head and the countersunk, and the fixing pin should be on the outer surface of the parts. 5.4.5 The exposed surface of the axle box shall not be corroded: the ends of the screws, rivets, and pins shall not have defects such as torsion, sleep damage, etc. 5.4.6 The lubricating oil pipes and other parts on the outer side of the axle box shall be arranged in a complete manner, and the pipes can be opened when necessary. The pipes shall not be pressed.
5.4.7 After the axle box is painted: the joints between the front cover, rear cover, upper cover, and the rest of the box body should be cut open, and the edges should not be torn when cutting. 5.4.8 The parts labels on the axle box should be clear and durable. The label is determined in the position of the plate. The fixed position of the Rui brand should be correct, and the half-fixed is not fixed.
6 Idle running test
6, 1 After the number of axis groups is completed, it is necessary to carry out the idle running test to improve the contact state of each contact and make each main batch of axis gears reach a stable temperature.
General precision grade combination machine family multi-axis box, wide continuous idle running 2h; precision grade combination machine tool multi-axis box, should be continuous idle running! Export assembly machine tool multi-axis box: should be continuous idle running 41.6,? Multi-relay box has a high-speed system, the idle running test should start at the lowest speed. Operate in sequence, the operation time of each speed level shall not be less than 2im, and it shall run for a sufficient time (not less than h) at the reported speed. 6.3 When the main shafts of the relay box reach the stable temperature, the temperature and temperature rise of the shell near the main shaft bearing shall not exceed the 3 in Table 4. Bearing type Sliding shaft Active bearing 58.T 48911999 6.4: During the air transport test, the sound of the gear transmission in the axle box shall be separated, and there shall be no irregular impact sound and periodic screaming. The sound level of the multi-axis pin shall not exceed the distance between the microphone and the multi-axis box. 6.5 Check the direction and speed of all transmissions. For furnace tapping multi-axis boxes and integrated multi-axis boxes with tapping spindles, the stroke of the die rod on the tapping shaft shall also be checked.
6.6 During the idle running test, if any of the above conditions are found to be not in compliance with the requirements, the idle running test shall be repeated after the deficiencies are eliminated until all requirements are met.
Accuracy test
After the idle running test is completed, the geometric accuracy of the multi-pump box shall be tested according to the provisions of ASTM/T3043, and the measured values of the accuracy test shall be recorded in the test sheet.
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