JB/T 8769.2-1998 This standard specifies and supplements technical standards such as GB 9061-88 "General Technical Conditions for Metal Cutting Machine Tools", ZBn J50 008.1-88 "General Technical Conditions for Machining Parts of Metal Cutting Machine Tools", and ZBn J50 008.3-88 "General Technical Conditions for Assembly of Metal Cutting Machine Tools" according to the structural characteristics and use requirements of camshaft lathes. This standard specifies the requirements for the design, manufacture and acceptance of camshaft lathes. This standard is applicable to camshaft lathes with a maximum workpiece rotation diameter of 130mm, a maximum workpiece length of 1500mm, and a hydraulic profiling tool holder for machining cam surfaces. JB/T 8769.2-1998 Technical Conditions for Camshaft Lathes JB/T8769.2-1998 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 8769. 2-1998
Camshaft Lathe
1998.07.[7]Release
Technical Conditions
1998-12-01Implementation
National Bureau of Machinery Industry
JR/T8769.2-J998
This standard is based on the structural characteristics and use requirements of the camshaft lathe, and is a technical standard for GR9061-884 gold bottom cutting machine tools. 0008.1-88 General technical parts of metal flash cutting machine tools ZBnJ50008.338 Technical conditions for assembly of metal cutting machine tools in Tongzhou 3 or other non-standards have been integrated and supplemented. This standard is under the general title of cam-assisted lathes and includes the following two parts: Part 1: B8.1 Precision inspection
Part 2: JB/T8769.2 Technical characteristics
This standard was proposed by the National Metal Cutting Machine Tool Standardization Technical Committee. This standard is from Shenyang Lathe Research Institute.
Drafting unit of this standard: Shenyang Lathe Research Institute Scope
Mechanical Industry Standard of the People's Republic of China
Camshaft Lathe
Technical Case
This standard defines the requirements for the design, manufacture and acceptance of camshaft lathes. JH/T B769.2-1998
This standard is applicable to the wheel axle lathes with a maximum workpiece rotation diameter of 13°mm and a maximum working length of 15°mm, which are processed by the drop pressure profiling tool.
2 Referenced Standards
The provisions contained in the above standards become the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. Existing standards will be revised. All parties using this standard should explore the possibility of using the latest version of the following standard. GB/T 5226.1-1906
Electrical equipment of industrial machinery Part 1: General technical conditions G0618
GP15760-1995
GB/T167691997
JB/T $760.1-1998
Z J50 0(3-88
ZE 150 008.188
ZBn J5U UUS. 88
23 :50 016-89
3-year requirements
General technical requirements for enterprise-owned cutting machine tools
Technical conditions for safety protection road
Jinchen auxiliary machine tools
Metal cutting machine tools
Noise sound pressure measurement method
Camshaft lathe precision inspection
Jinping bad cutting machine
Soft pass after cleaning
Jintong cutting machine tools
Metal cutting machine tools
Metal cutting machines
General technical specifications for machine parts
General technical conditions for assembly
General technical conditions for wave systems
When accepting machine tools according to this standard, it is necessary to simultaneously check the remaining acceptance items in GB9061.ZBnJ6CCC8.1.ZBnJ50008.3 and other standards that have not been specified in this standard. 4.1 In order to ensure the air performance of the machine tool, the machine is provided with the accessories listed in Table 1, and the above single-joint gear test is carried out. The feed document will be the gear type
bedside membrane
quality tail active
Guohao Machinery Industry purchased 1998-07-J approved quantity
【set of "Parts"
1998-12-01 implementation| |tt||JB/T8769.21998
4.2 According to the supply contract or technical agreement, the special accessories listed in Table 2 can be added at random. Table 2
Shanxinle
Xiangrong clamp
5 Safety and health
1 Parent (including fixed reverse block)bzxz.net
5.1 The original position and integral point of the machine tool's intermediate travel should be equipped with a reliable limit mechanism and safety device. 5. 2. The bed body and bed load should be equipped with dust collecting devices. S.3 The machine tool should be equipped with a movable chip screen.
5.4 When the machine tool is in emergency or the power system fails, the tool should leave the workpiece and return to its original position. 5.5 The exchange gear and pulley must be equipped with a protective accumulator and a gate electric device. The moving parts that are not allowed to move at the same time must have independent locks and cannot be interlocked. The control mechanism must be equipped with a complete sign or label near the control mechanism and explained in the instruction manual. 5. When the machine tool is running, there are some noises such as screams and unexpected impact sounds. When there is no workpiece, the sound pressure level of the whole machine shall not exceed 83 (A! 5.% according to the standard. When accepting the machine tool according to the standard, the specific acceptance items in the technical standards of B1570 and the acceptance items specified in 226.1 and 275016 shall be inspected every day: 6 Processing and assembly quality
6. 1 The bed, headstock box and other castings must be aged after assembly. 6.2 The bed guide rails, shaft seat and other components shall be equipped with wear-resistant materials. 6.3 The following joint surfaces shall be connected to the requirements of "main station surface": bed bottom joint:
b) center frame bed joint surface
) mold support and bed joint surface:
) screw thread and bed joint surface.
(.4 The following joints shall be connected to the requirements of "special fixed station joint surface": a) bed pin and bed retracted joint surface:
) tail stop and seat bottom plate joint surface;
center) flat belt seat and seat cup finger joint surface. .S bed, bed guide rail connection "need to move" requirements assessment. 6.6 The tailstock of the bed shall be connected to the "transfer guide rail" requirements. 6 The center of the head of the pressure tool holder and the center of the belt mold axis shall be in the same plane. 6.8 The length of the hydraulic clutch should not exceed 0.03mm. When installing the magnetic clutch, first clean the bottom of the plate, then install the beads slowly. The H-shaped clutch should meet the requirements. When installing the clutch, the center of the rack should be equal to the support and the length of the support. In the vertical plane, the average feed difference should not exceed 2.15mm: the axial movement of the end support should not exceed 0.15mm. 1.11 The reverse idle travel of the tool channel should not exceed 1/20T. 6.12 When assembling the combination travel switch for controlling the longitudinal movement of the bed, the combination travel switch and the quick stop block shall be properly matched. The combination travel switch and the quick stop block shall be tested for 5-position rotation. The actual stop position error shall not exceed 0.5rm
6.13 The hydraulic, cooling and electrical circuits of the machine tool shall be arranged neatly, and the fixed non-solid moving parts shall be equipped with special parts. 6.14 The cleanliness of the headstock and the pressure oil tank shall be inspected by the weight method, and the impurities and dirt shall not exceed the requirements of Table 3 (if any). Other parts are inspected by daily measurement and hand feeling method, and there should be no dirt: Table 3
Part name
Cleanliness value
Machine tool idle running test
7. Temperature rise test
Under pressure relief oil
Main motion mechanism of the expansion machine is operated at low, medium and high speeds, and each speed shall not be less than 2 minutes. The high-speed operation time shall not be less than 2 hours, and the bearing of the transmission card reaches the specified humidity. The temperature and rise of the bearing are measured near the bearing of the transmission card. The value should not exceed the regulations in Table 4. Table 4
Bearing name
Deep dynamic bearing
1.? Machine tool also has air, pressure relief system inspection products
Inspect the working conditions of the air system of the machine tool, and it shall comply with the provisions of GB/T5226. Check the working condition of the hydraulic system of the machine tool, which shall comply with 75JSGC16 and be specified. 7.3 Continuous idle operation test of the whole machine
The machine tool should be tested for continuous idle operation to check the automatic cycle performance of the machine tool. Each cycle includes all functions and all operating ranges of the machine tool, and the operating speed and feed rate are continuously adjusted. The whole machine should be idle for no less than 8 hours. The time between each half-operation cycle shall not exceed 10 minutes. During the cycle, the mechanism should operate normally, the action should be accurate, flexible, reliable, and there should be no abnormal phenomena such as failure. The oil pressure in the oil channel shall not exceed 60℃, and the temperature shall not exceed 30℃. Machine tool working test
The machine tool should be tested after the idle operation test, according to the cutting specifications specified in the adjustment! The machine tool is not allowed to be moved during the continuous cutting of the test piece (scratching), according to JF/T5769.1. The machine tool should be inspected monthly. The new machine tool should be inspected or tested by the operator. 9.1. The machine tool should be inspected once after the idle running test and the busy running test. The actual value of the last two times should be recorded in the self-inspection certificate. 9.2. The machine tool should be inspected by adjusting the main motion system to the specified working state for 30 minutes, and then the geometric accuracy of the center 9 and 613 should be checked first.
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