This standard specifies the design, manufacturing and acceptance requirements for bottom-drive double-acting extension presses. Items not specified in this standard shall also comply with the provisions of relevant standards such as JB 1829. This standard applies to general-purpose presses. JB/T 8348.2-1996 Technical requirements for bottom-drive double-acting extension presses JB/T8348.2-1996 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 8348.2-96
Bottom Drive Double-Action Drawing Press
Technical Conditions
Published on April 11, 1996
Ministry of Machinery Industry of the People's Republic of China
Implemented on October 1, 1996
Mechanical Industry Standard of the People's Republic of China
Bottom Drive Double-Action Drawing Press
Technical Conditions
1 Untitled Contents and Scope of Application
Net This standard specifies the design, manufacturing and acceptance requirements for the transmission efficiency dynamic traction machine (hereinafter referred to as the traction machine). It does not specify the requirements for the vehicle certification. The previous date shall comply with the provisions of 182 and other relevant standards. This standard applies to special purpose presses. 1F/T1031
5B3766
GE6111
GB/THAhI
GB/T 133U6
JH3240
JB3350
ZBJ59011
23.50 013
ZB J50 014
Also Feikuyuner mark
Surface precision numbers and values
General modification conditions for hydraulic systems
Electrical technical components of machine tools
Deficiency and dimensional tolerances
Technical conditions for components
Standard heavy rat tea
General technical conditions for long-distance machines
Mechanical operation instructions
Technical regulations for mechanical safety
Noise compensation for press machines
Machine tool installation conditions
Anti-intrusion conditions for machines
Machine tool packaging technical components
3 Technical requirements and test methods
3.1 Drawings and operating documents
The design and manufacture of presses shall comply with the requirements of this standard and shall be in accordance with the regulations. Detailed technical documents for the development of the standard shall be prepared. 3.2 The type, basic parameters and dimensions of the press shall generally comply with the relevant standards (in special cases, they may be in accordance with the requirements of the user). 3.3 Compatibility and compatibility 3.3.1 The large press shall be equipped with necessary tools, spare parts and spare parts when it leaves the factory. Special parts shall be agreed upon by the user and the manufacturer or ordered separately. 3.3.3 The purchased accessories of the small press shall obtain qualified certificates and be tested for operation together with the press. 3.3.3 The conditions for installing automatic feeding equipment shall generally be considered for the press. 1996-04-11 Standard of the Ministry of Machinery Auxiliary Industry 1996-1001 Implementation 3.4 Rigidity JH/T 8348. 2.-- 96
When designing new products, the pressure pick should have appropriate stiffness, and its stiffness value should comply with relevant regulations. 3.5 Wear-resistant measures
Wear-resistant measures should be taken for the sliding surfaces of the guide rails and the sliders, and the main moving parts. Generally, the thickness of the replaceable guide surface should be lower than that of the non-removable guide surface. 3. Safety and protection
3. (1 The press should have personal safety protection devices and should comply with the provisions of JB3350. 3..2 The elasticity of the press should be light, flexible, safe and usable. The manual operating force shall not be greater than 50N. ① The above provisions are not suitable for lubrication of wheels. For the use of the ten major operations, it is allowed to increase the fire by 50%. 3.6.3 The motor or flywheel should be marked with an arrow on the working rotation direction. 64 The parts that may be lifted off during the operation of the press should be equipped with adjustable loose parts. External rotating parts that affect working safety, such as transmission gears, pulleys, flywheels, etc., should be equipped with protective covers. 3.5 Where maintenance can be done on the ground, the maintenance parts should be equipped with necessary escalators and maintenance platforms, and meet the following requirements: When the height of the press bed exceeds 3m from the ground, a maintenance platform and guardrail should be set up. The platform should be laid with regular boards, and the height should be 50m. The height of the guardrail should not be less than 105mm. There should be a red safety indicator light on the guardrail. The type is a connection for continuous maintenance, and at least one step should be locked with the operation control system. When the lever is closed, the main transmission control is disconnected.
3.6. For presses with operation requirements at both the front and rear ends, there should be emergency stop buttons at the front and rear ends. 3.7 The lubrication machine should have a slip-removing device to ensure that all rotating parts are lubricated. - The machine should also have anti-seepage measures such as an oil return pan or other equipment).
3.8.【The machine should have nameplates and instructions, such as lubrication, operation, safety and other important signs or symbols. All signs should be clear and accurate, and the success rate should be fixed on the bone. 3.8.2 The type and size of the nameplate should comply with the regulations of G2 13315. 3.8.3 The image of the nameplate should correspond to the current regulations of JB32:0. 3.9 Pressure vessels
The design, manufacture and acceptance of pressure vessels must comply with the provisions of relevant standards and regulations: 4.1 Quality of welded parts
4.1. All iron parts, steel parts, forgings, press parts and non-ferrous metal parts of the press should comply with the current standards. If there is no standard, the second should meet the technical requirements of the drawings and process documents. Important rotations, welds and welds should obtain the code qualification certificate. 4.1.2 The mold minerals and adhesives on castings, special steel parts, non-ferrous metal parts and the slag and slag of welded parts should be cleaned up. The non-machined surface of castings and furnace parts should be flat, and the total line seat should not be wrong. The time specification of Table 1. 4.1.3 The working surface of important casting parts, such as the inner surface of the bearing, the wheel, the wheel folding surface, the sliding surface of the slider and the guide rail, and the working surface of the convex grab, are not allowed to have gas, general inspection, cold drop and other defects. For the defects of the appearance, the quality of the product will be guaranteed to be stopped under the condition of loss of quality. The age of the product is sufficient, and the relevant provisions of the technical delivery parts are allowed to be replaced. 4.1.4 The size tolerance of the parts shall comply with the provisions of GH6414. 4.1.5 The weight tolerance of the parts shall comply with the provisions of G/T1131. 2
Rescue category
There are also metal parts
J/F 8348. 2-96
The sliding surface of the track should have uniform hardness and the difference in contact should not be as large as specified in Table 2. Table
5 plus T. Assembly quality
5.1 Parts processing
5.1.1 This requirement
The processing of parts shall comply with the design, process and relevant standards. 5.1.2T The standard processing table and the torque limit are in accordance with GT/T1C3: R, the value is not more than i.3um. The workpiece table of the cam has two special features, the center is not 3.2km
5.1.J The sliding surface of the scraped surface
S.1.3.1 The points on the scraped surface should be even, and the number of points within the area of ​​25mm×2mm should be in accordance with the specifications in Table 3.
The scraping points should be tested on the effective working surface (not less than 120 cm). When the working surface of the guide sleeve is certified by the machine, the contact should be evenly distributed. According to the required counting value of the area, the scraping points and the contact situation of the bearing plate or the shaft should be checked in the actual working position (installed in the shaft):
direct inspection
Note: The regulations are used for non-removal of the bearing. Tips: less than the following)
5.1.3. The working surface of the guide sleeve should be evenly distributed. When scraping: use the matching parts (or test plates) for color inspection, and calculate the average within 300cm (when the actual area is less than 3cm, calculate half of the average), and the number of contact points per 25mm×25mm should be in accordance with the regulations in Table 1.
Bun
5.1.4 Sliding surface processed by machine
According to the number of contact points (not less than)
JR/T 8348.2-96
The two matching parts (sliding heat conduction, close or test bearings) shall be inspected by screening method before assembly. The contact area shall be not less than 70% in the whole length and not less than 50% in the degree. For bushings or split bearings, the cumulative value of the axial contact length shall not be less than %. 5.2 Assembly requirements
5.1 The press machine shall be assembled according to the assembly process specifications. All parts and components assembled to the machine shall meet the quality requirements. It is allowed to install gaskets, check parts and other seasonal parts specified in the national sample. 5.2.2 Important fixed joints are tightly fitted, such as the cross-piece and the left and right columns, and the left column and the base.The clutch box and the bottom, the nut and the base, and the removable guide are fixed together. After tightening, they are inspected with a C, 5mm diameter ruler. The ruler is inserted into the inner part. The insertion depth is not more than 20m, and the total insertion part is not more than 10% of the inspectable length. 5.2.3 The outer diameter of the subassembly and the auxiliary seat should be in close contact. The matching properties should meet the design and process requirements. 5.2.4 The misalignment between the axes of the gears after assembly should be less than the specified value. Table 5
Gear wheel width B
>50~155
Center position (not more than)
5.2.5 Interchangeable guide rails can be inspected by coloring the flat plate to check the connection. During assembly, use a ruler to check whether the angle between the vertical guide and the interchangeable guide rail will be different. The ruler should not exceed 0.031u. However, in the local position of the interchangeable guide surface, it is allowed to reach 10mm.
5.0 The width of the wheel and the mounting wheel should be not less than 70% in the working circle, and the arc should not be less than 50%.
5.2. After the flywheel is assembled, the static balance test and alignment are carried out. The flywheel is obviously unbalanced. The following formula (1) is used to calculate M
Where the flywheel is allowed to use the weight of the flywheel +:
flywheel working angle raa/y.
5.2.8 The rotating parts on the clutch and brake components should generally be balanced and aligned before assembly. During the idle running test after the modern press is assembled, no obvious vibration is allowed. 5.2.9 The anti-vibration of the flywheel should be checked after the flywheel is assembled, and its tolerance should not exceed the provisions of 6. Table
Flywheel dwarf
>1000--20c0
, measure the indicating screw points in the longitudinal direction and end face (1mm higher than the flywheel outer surface) on the flywheel chain, and the actual flywheel rotates one circle, and the indicator screw points are the maximum number of times the flywheel rotates one circle. 5.2.10 The oil, water, and air in the pneumatic, lubricating, and cooling systems should not have condensation. 5.2.11 The misalignment of the press should comply with relevant regulations. Clean the main parts: base (flash wheel), column guide rail, wheel working surface, roller working surface and main bearing inner surface: 5.2.11.1
5.2.11.2 Cleaning and lubricating parts: pneumatic lubrication plan. 6 Electrical, pneumatic and hydraulic equipment
JB/T8348.196
6.1 The electrical equipment of the giant machine shall comply with the provisions of GB/T 226. 6.2 The circuits, connections, flanges and air connections of the pneumatic system shall be well sealed, connected and in compliance with the relevant standards. 6.3 The hydraulic system of the pressure pump shall comply with the provisions of GB3766. The micro-pressure components used in the hydraulic system shall comply with the specifications of (B7935, and the appearance monitoring
7.1 The surface of the hydraulic machine should not have the protrusions and depressions specified in the drawing, the corresponding flatness and other damage. 7.2 The surface of the outer shell of the hydraulic machine should not have defects, bumps, scratches, rust, etc. 3 The joints of the hydraulic machine and the components should be even and symmetrical, and there should be no obvious gaps, doors, and edges. The joints should be smooth. 4 The exposed edges should be straightened and 7.5 The surface of the blue and key parts should be smooth and free of rust and shedding. 7.6 The eccentric fixing pin near the installation hole should not protrude from the surface of the part, and its head should not have obvious deviation from the hole. The convex part should be light and correct, but the mountain part should not be too different. 7. When the pressure machine pipeline is connected, the outer group should be arranged in an orderly manner. If necessary, it can be fixed with pipes. During operation, there should be no contact or collision with other parts.
7.8 Various labels of the press machine should be clear and durable. The nameplate seat should be fixed in a conspicuous place. The positioning of the label should be correct, firm and not tilted.
9 The surface of the press parts should be smooth and consistent with the surface except for the continuation of the surface. .10 The coating of the pressure machine should comply with the provisions of ZBJ5 and 11. 8 Inspection rules
K. General rules for inspection
Product inspection and type inspection before delivery:
a , the lights on the table are all made in a special way, "Go ahead! After passing the test, we will test you!" Under special circumstances, it can also be carried out during the transfer;
New products are transferred to old products for strict trial production at regular intervals, and type inspection is carried out in accordance with relevant safety standards. 8.2 Acceptance items
The machine system shall be inspected and tested according to the following items
Inspection of reference and size specifications;
Empty rotation test
Load test, load increase test;
Virtual inspection
8.3 The inspection of the basic parameters and size specifications of the press shall be carried out under no-load and normal power supply conditions (random inspection is allowed). The safety measurement error shall not be greater than Table of contents (the difference is calculated as less than 1mns, and the wear is calculated as 1mn)
B. Idle running test
8.4. Test time
Each power machine should be tested for stable running. Continuous running test time: 4 times (two hours each time 3
Inspection month
Pull stroke
Pull slider stroke times
Heat height
Workbench size
Maximum adjustment amount
Maximum distance from the bottom of the sliding surface to the workbench "Pressure adjustment, 1. The workbench is at the highest position, 4.2 Temperature rise and mixing degree
JB/T 8348.296
15% of the storage capacity
% of the efficiency
not less than the regulations
public according to the ITIG line
not less than the efficiency regulations
not less than the regulations
During the idling time of the press, the load and temperature of each test part shall be measured at the measurable part close to the moving surface, and the rise and fall values ​​shall not exceed the following specifications: The temperature of the sliding bearing shall not exceed% and the humidity shall not exceed 7C ：a
The temperature of rolling bearings should not exceed 40℃, and the maximum temperature should not exceed 0℃; the temperature rise of movable guide rails should not exceed 5℃, and the maximum temperature should not exceed 0℃.
d. The temperature rise of clutch and brake should not exceed 70℃, and the maximum temperature should not exceed 100℃ (when using high friction materials, the maximum temperature is allowed to exceed the specified value, but it shall not affect the normal performance of surrounding parts, etc. 8.4.3 The working conditions of exhaust, pressure connection, air discharge, lubrication and cooling systems and their attached devices are normal and reliable. There should be no stagnation and loss of gas in the working system. 4.4 The gear transmission mechanism and electrical pressure relief, pneumatic parts of the positive press should work evenly. There should be no irregular production and periodic squealing.
, 45 The noise level of the press measured during its empty rotation should meet the requirements of Table 8. The method of sound test shall comply with the provisions of JI3623.
Mechanical machine resistance
2C3--20C0
Figure. Load test and overload test
8.5.1 Each dynamometer shall be connected to the load test chamber. The number of tests shall be no less than 3 times. 2. During the load test, the cylinder structure shall act in a coordinated and reliable manner, and there shall be no damage to the parts; b. The control accuracy shall meet the requirements.
8.5.2 For new products or products with updated design, a rough load test shall be carried out at 12% of the nominal force, with a number not less than 3: VI. 8.5.3 The calculation formula for the tensile force in load test and overload test shall be calculated in accordance with Appendix A (Supplementary). 8.6. Precision test
B.6.1 Each press machine shall be inspected according to relevant standards before the running test and after the full load test. Before inspection: - The installation level shall be adjusted, and the longitudinal and lateral levels shall not be greater than 0.20/1000. During the precision test, adjustments to the mechanisms and parts that affect the precision are not allowed.
8.6,2 After the negative test is passed, the actual data of the test shall be recorded in the certificate of qualification. 6.6.3 After the fine test is passed, the actual data of the sliding block, workbench and guide rail shall be recorded in the certificate of qualification: 9 Packaging, labeling and transportation
9.1 Anti-rusting
The parts, accessories and spare parts of the press shall be processed and kneaded before packaging. The anti-rust technical requirements shall comply with the heat setting of 6
51013
52 Position packaging
JR/T 8348.2-96
The packaging technical requirements of each press and its parts shall comply with the provisions of ZBJ50014. The text and logo on the outer wall of the packaging box shall be clear, neat and durable.
9.3 Marking and transportation
The transportation instructions, such as "Lift from here", "Center point", etc., shall comply with the provisions of GB191 and the requirements for transportation and loading.
9.4 Technical documents provided at random
The following technical documents shall be provided at random with the table press:.
Instruction manual:
Certificate of conformity card:bzxZ.net
Packing list.
FBF 8. 2-.96
Lu Lu A
Bottom transmission double-acting pulling and retracting machine load test
Calculation formula of tensile force
【Filling parts】
European transmission double-acting pulling and retracting machine load test tensile ear according to modification A:
Wu City-
-Upper diameter
o test piece thickness.mm;
Test material is the limit of illumination, Nmn:
Effective (according to A)
Return to the correct system!
Note: Light pull [coefficient teacher
.-! It mm
Additional instructions:
This standard is adjusted by the Ministry of Industry and Commerce! The Technical Committee of Standardization of Machinery Technology proposes the production. The wood standard is from the Tuhai Press Machine Tool Factory. The benefits of this standard are: This standard is required to start from the lack of text,
This standard was released in January 1985,
This standard adopts the Japanese standard 115B640285 machine press test method for efficiency inspection, 8
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