JB/T2257.1-1992 "WC67Y hydraulic sheet bending machine technical conditions";GB/T14349-1993 "bending machine accuracy";JB10148/1999 "hydraulic sheet bending machine safety technical conditions";GB5226.1-2002 "mechanical safety, electrical equipment general technical conditions".In order to formulate our company's finished product inspection specifications:
1. The leveling level of the whole machine tool: place the square level instrument in the center of the worktable to measure the longitudinal and transverse level within 020/1000mm.
Geometric working accuracy:
1, the flatness of the table length direction ≤2500 0.06;3200 0.08 4000 0.10 or less or less
Table flatness width direction ≤2500~3000 0.02 ≤3000~4000 0.04
2. Check the level of the attachment between the slider and the upper die, and the parallelism of the supporting surface to the working table: use the dial gauge and the pedestal probe to measure the length direction of point A on the attachment surface of the upper die of the slider at point B: ≤2500 0.16 ≤4000 0.18 ≤2500~4000 0.04 in the width direction
3. Check the verticality of the slide block stroke to the worktable: the dial gauge and the seat are applied to the slide block, the standard square is placed on the working table, the measuring head of the dial gauge touches the measuring surface of the square, and the machine tool sliding block is started to move up and down ≤ 0.20/100 ≤0.25/100~250 (when the slide block is running down, only the slide block is allowed to tilt to the inner frame).
4. Check the positioning accuracy of the sliding block and the end of the working table. The height of A, B, C is within 0.05 range.
1, the working accuracy of the specimen bending Angle: the length of ±1°30 'with the universal Angle on the surface of the bending specimen in turn measured in many places, error measured in the maximum and minimum Angle and the specified bending Angle of 90° difference value.
2, the specimen bending straightness: the length of the flat ruler test surface on the edge of the bending specimen, with a gauge to measure δ between the two, the error in any one meter length of the maximum clearance value :0.75 ~ 1.00/1000.
Structure and performance
1. Bend the specimen according to the bending tonnage of the machine tool, and test whether the specimen and tonnage of the machine tool meet the design requirements.
2, check the reliability of the safety device;Various operation standard tests of slider running to check the flexibility and reliability of its action;Verify the flexibility and reliability of various adjustment mechanisms;Check the accuracy and reliability of various indicators and counters;Check the flexibility and reliability of auxiliary devices;Check the sealing of the hydraulic system, whether there is leakage;Check the pressure holding performance of the hydraulic system;Check the flexibility and reliability of various interlock protection devices;
3. To ensure the running state of the machine tool, it must be empty running for 4 hours, and the temperature of the oil tank should not exceed 50°C;Continuous operation for 1.30 hours, single operation for 2 hours, temperature rise should not exceed 60°C
4, sliding bearing temperature rise should not exceed 35°C;Temperature rise of rolling bearing should not exceed 40°C;The height temperature rise of sliding rolling bearings should not exceed 70°C.
5. Check whether the machine tool has abnormal scream;The noise decibel meter should not exceed 85 decibel.
6. Check whether the clearance contact surface of each moving part meets the standard.
7. Check whether the electrical box device is firm;Whether the safety signs are complete;Protective device, neat and reliable electrical wiring;Whether the fastener assembly meets the standard.
8, check whether the paint is implemented paint process operation;The appearance of the machine tool is bright and perfect.
9. Check the accessories, tools and accessories of the machine to meet the design requirements.
The main characteristics and uses of the electro-hydraulic bending machine
1. The hydraulic electro-hydraulic bending machine adopts steel plate welding structure;Vibratory aging stress relief, electro-hydraulic bending machine
It has good rigidity and stability;The whole bending machine frame is rigid, stable, safe and reliable, easy to operate.
Adopt DA52 bending machine special CNC bending machine system and German BOSCH electro-hydraulic proportional servo valve, the system runs stably and the production precision is high.CNC system grating ruler, electro-hydraulic proportional valve and valve with electronic amplifier composed of the closed-loop control system, accurate detection and control of the slide and the working table of the relative position, synchronization precision, is the slide to keep synchronous operation, to ensure the bending depth and bending Angle of the bending machine.
2. The whole steel plate welding structure of the bending machine, the frame is thick, the rigidity is high and the shock absorption is strong;
3. The mechanical structure of the bending machine is mainly composed of a frame, a working table, a slide block, a main oil cylinder and a rear stopper.Perfect design and manufacturing process, can effectively ensure the manufacturing and use of the bending machine precision.
Electro-hydraulic bending machine main structural parts of the manufacturing process flow (process inspection interspersed) :
Sheet material warehousing → physical and chemical inspection → sheet material pretreatment (grinding and derusting) → CNC flame cutting cutting → cutting each welding joint surface → assembly welding → gas protection welding → vibration aging treatment → large floor boring and milling machine and other mechanical processing processes → assembly of finished products;
4. Upmoving bending design, stable work, convenient operation, complete;
5. The main parts of the frame, slide block and working table of the electro-hydraulic bending machine are finished by a large CNC floor boring and milling machine, which ensures the geometric precision requirements of the main machine;
6. The guide rail of CNC bending machine adopts advanced self-lubricating materials, which does not need regular lubrication maintenance;
7. The design stiffness of the bender's worktable, column, beam and slider is high, the deformation of the bender's worktable and slider is small, and the products have good consistency of straightness and Angle;