sheet-metal

As professional metal forming machine manufacturer and supplier, we provide HPS series press brakes. These bending machines can offer optimal accuracy with electric-hydraulic servo system and advanced CNC machine. The bending process can be set according to customers’ requirements. The non-corrosive surface allows much less maintenance for the press brakes. Special materials will be packed together to avoid possible damage during delivery. Our company offer excellent after-sale service and could help you know all the affecting factors to obtain the optimal bending process and accurate bending results.

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Characteristics

  1. HPS Series Press Brakes are equipped with electric-hydraulic servo system and allow for synchronous movement controlled by fully closed loop.
  2. These bending machines feature in a back gauge driven by servo motor and a ball screw guided by two linear bearings.
  3. Advanced CNC machine allows for data rectifying process, so as to ensure accuracy.
  4. Ram deflection can be compensated with crowning on working table.
  5. A variety of combination of top tooling and bottom tooling is available for customers.

 

  1. Linear encoders

Linear encoders for ram position measuring contribute to optimal accuracy.

 

  1. Control technology

Two linear encoders (Y1-Y2) are set on two sides of the press brakes, which are used to measure the exact distance between the ram and worktable. The encoders are connected to the table so as to prevent deformation of the side frames from affecting positioning. In addition, the obtained data is immediately sent to the control system for calculation and then the servo valves receive the corresponding control signal. CNC system is used to rectify two servo calves in case of any error. Also, it always ensures the parallel state between the ram and worktable of the bending machine.

 

  1. Machine Configuration

CNC crowning is set on worktable of the press brakes with double wedges moving relatively to ensure accurate bending compensation. After parameters such as sheet thickness, sheet length, die opening and tensile strength data are conveyed to control system, force and related crowning compensation value are automatically determined. It’s better to add preloading process to each bending process.

  • Worktable crowning system can be controlled by hand wheel or by motor. Programmable crowning system V-axis is optional.
  • Automatic back gauge system is characterized by high precision. The components include X axis transmission by gear belt driven by servo motor, servo driven R axis for vertical movement, and stopping finger with manual transverse movement.
  • Equipment for option (quick clamping top tooling & special tooling & throat & back safety guarding).

(4) CNC controller DA52.

 

Key components:

Name                                                      Supplier                                                 Origin

Seal                                                         MERKEL or NOK                                   Germany or Japan

Hydraulic valve unit                             BOSCH                                                    Germany

Linear encoder                                     HEIDENHAIN                                          Germany

Servo motor and servo dirve             ESTUN                                                     China

Oil pump                                                NACHI                                                     Japan

CNC system                                           DELEM or CYBELEC                              Holland or Switzerland

Model 50/20 100/30 135/30 165/30 200/30 250/32 320/40 500/40
Press force ton 50 100 135 165 200 250 320 500
Working Length mm 2050 3050 3050 3050 3050 3250 4000 4000
Dist.between uprights mm 1640 2550 2550 2250 2550 2250 3150 3150
Stroke mm 200 200 200 200 250 280 280 300
Distance table/ram mm 380 400 400 400 450 520 520 600
Gap mm 300 400 400 400 400 400 400 400
Width of table mm 140 180 180 180 180 250 250 300
Approaching speed mm/s 150 150 130 130 110 100 100 90
Working speed mm/s 10 10 10 10 10 9 10 8
Returning speed mm/s 110 110 110 110 110 110 100 75
Motor kW 5.5 11 15 18.5 18.5 22 30 37
Volume of oil tank L 180 320 320 350 400 700 700 900
Traven in X axis mm 600 600 600 600 600 600 600 600
Lenght of machine mm 2185 3320 3320 3320 3320 3500 4450 4600
Width of machine mm 1450 1660 1700 1750 1900 2000 2200 2500
Height of machine mm 2275 2500 2500 2500 3200 3700 3800 4250
Weight kg 5000 7000 10000 12000 12500 15000 19500 36500