Difference Between Strong Spinning And Ordinary Spinning
1. Different driving mechanism
The horizontal and vertical feeding mechanisms of the upper roller frame of the powerful CNC spinning machine are mostly driven by hydraulic transmission or mechanical and hydraulic combination, so as to generate enough spinning force and meet the process requirements of balanced stepless speed regulation. For example, the feeding mechanism of Shangxi powerful CNC spinning machine is a digital hydraulic transmission system, which can not only provide strong spinning force, but also have high control accuracy.
2. Different machine tool stiffness
Compared with the ordinary CNC spinning machine, the machine bed, spindle, transmission system, roller frame, tailstock and other parts of the powerful CNC spinning machine have sufficient rigidity. At the same time, in order to ensure the stability and safety of strong spinning production, the strong CNC spinning machine also has the characteristics of heavy workbench base, thick guide rail, thick bearing bracket and box wall.
3. Different spindle adjustment flexibility
The main shaft of the powerful CNC spinning machine has sufficient transmission torque and power, which can meet constant torque or constant power regulation according to different process requirements. In addition, the spindle speed and the longitudinal feed speed of the spinning wheel are set to stepless speed regulation, which can not only meet the requirements of arbitrary selection of spinning process consumption, but also realize the possibility of maintaining the rotational linear speed of the spinning core mold surface and the feed amount of each rotation during the spinning process.
4. The number and structure of spinning wheels are different
Ordinary spinning machines mostly adopt the structure of one spinning wheel + multiple auxiliary forming wheels (flanging wheel, crimping wheel, etc.). The number of spinning wheels or spinning wheel frames of the powerful CNC spinning machine is mostly 2 to 3 (the general type is 2 cylindrical, and the part spinning machine is mostly 2 to 3). The spinning wheel or the spinning wheel frame is symmetrically arranged with the axis of the main shaft as the center line, which can balance the radial force during spinning, reduce the bending deflection, deflection and vibration of the main shaft and the core mold, and improve the accuracy of spinning. Because this structure requires high horizontal or vertical synchronous feed accuracy of the spinning wheel, Shangxi technology uses digital hydraulic cylinder to control the advance and retreat of the spinning wheel when designing a powerful numerical control spinning machine, ensuring the synchronous accuracy of the spinning wheel.
