Hydraulic valve schematic

Hydraulic valve schematic

Overview • It has the characteristics of high reliability, high precision and high efficiency;
• Adaptive adjustment system for correction amount, precise hydraulic control, automatic analysis and calculation of correction amount;
• Special treatment of workpiece defects (center eccentricity, ellipse, burrs, etc.), which solves the problem of shelf bending;
• Advanced WINDOWS measurement system, friendly man-machine dialogue interface • Simple and convenient workpiece clamping and positioning device, users can quickly and easily adjust tooling to meet different workpiece production requirements.

The main technical indicators of CHA40-C precision hydraulic straightening machine are shown in the table below

Structure and composition
1. Bearing rack
The C-type straightening machine has a simple structure and is easy to manufacture and process, but the host machine has relatively poor rigidity, and has good adaptability to ultra-long or ultra-short shafts and workpieces. In the working mode, the C-type straightening machine adopts a fixed position of the indenter mechanism, and the workpiece is driven by a servo motor to move the worktable to switch the axial straightening point of the workpiece. The installation and adjustment of the friction drive device and the center-type slewing center also facilitate the maintenance and replacement of vulnerable parts, and are more conducive to the user's switching and expansion of the new product parts straightening process.
2. The hydraulic control system pump station, hydraulic valve group, executive cylinder, hydraulic control circuit, etc. form the hydraulic system of the straightening machine. Since the key components of the hydraulic system are the products of world-famous companies such as Italian ATOS and GEFRAN, the accuracy, stability and reliability of the hydraulic system work are guaranteed. The hydraulic system of the CHA ** series straightening machine produced by Shanghai Kexian adopts the working method of fixed-variable plunger pump, which is convenient for the control of the overall performance of the system; the servo valve adopts the proportional servo valve produced by the Italian ATOS company to clean the working medium The degree requirements are greatly reduced, and the performance is enhanced; the displacement control sensor of the oil cylinder adopts a built-in structure, which is easy to protect and maintain. The hydraulic principle diagram of the hydraulic control part is as follows:


Hydraulic schematic
The programmable control center is a key part of the straightening machine. The complex and orderly movements of the straightener are all executed under the control of its program. The PLC and the computer processing system communicate with each other and coordinate and control the various execution parts to perform operations such as clamping, measuring, straightening site selection, and pressure correction. The system generally adopts SIEMENS series programmable controllers, and the electrical operation and execution components mainly use imported brand products, which work stably and reliably. According to the needs of different customers, it can be equipped with an industrial computer control system, and the workpiece parameter storage can be arbitrarily expanded to meet the requirements of one machine for multiple uses. A complete fault self-diagnosis system allows the operator to quickly troubleshoot equipment failures. The measurement dynamic waveform display can intuitively find workpiece surface defects such as roundness errors, burrs, and pits. The electrical control schematic diagram is described as follows:

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