The development trend of the 14th machine tool technology (2)

6, miniaturization of machine tools

With the rapid development of nanotechnology and MEMS, the development of machine tools for processing micro-parts has come to the fore. Micromachines are both fast and precise, with the smallest micromachines in the palm of your hand and a miniature factory in the suitcase. The operator controls the operation of the entire plant through the handle and monitor screen.

7, the principle of the new parallel mechanism

The traditional machine tool rotates the X, Y, Z along the three coordinate axes in a Cartesian coordinate, and rotates A, B, and C around the three coordinate axes in series to form a desired tool motion trajectory. Parallel motion machine tools use various types of rod mechanisms to move the spindle components in space to form the required tool motion trajectory. The parallel motion machine tool has a series of advantages such as simple and compact structure, high rigidity and good dynamic performance, and has broad application prospects.

8, the new process

In addition to metal cutting and forging, new machining processes and processes are emerging, and the concept of machine tools is changing. The field of laser processing is expanding. In addition to laser cutting and laser welding, laser hole machining, laser three-dimensional machining, laser heat treatment, and laser direct metal manufacturing are increasingly used. Electrical processing, ultrasonic machining, laminating milling, rapid prototyping technology, and 3D printing technology all show their magic.

9. New structures and new materials

The high speed and precision of the machine tool requires the simplification and light weight of the machine tool to reduce the negative impact of the machining inertia of the machine components on the machining accuracy and greatly improve the dynamic performance of the machine tool. For example, topology optimization of machine tool components by means of finite element analysis, design of box structures in boxes, and the use of hollow welded structures or lead alloy materials have begun to move from the laboratory to practical use.

10. New design methods and means

China's machine tool design and development tools should be transferred from 2D CAD to 3D CAD as soon as possible. 3D modeling and simulation is the foundation of modern design and the source of technological superiority. Based on this three-dimensional design, CAD/CAM/CAE/PDM integration is carried out to speed up the development of new products, ensure the smooth operation of new products, and gradually realize product lifecycle management.

11, direct drive technology

In conventional machine tools, the motor and machine components are connected by means of coupling elements such as belts, gears and couplings to achieve the required movement or rotation of the part, and the machine and electricity are separated. The direct drive technology integrates the motor and mechanical components into a mechatronic functional component, such as a linear motor, an electric spindle, an electric ball screw and a torque motor. Direct drive technology simplifies the machine structure and increases machine stiffness and dynamics, speed and machining accuracy.

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Single Point Load Cells

Single-point sensor commonly used parallel beam structure, made of aluminum alloy, high precision, wide measurement range, long life, simple structure, good frequency response characteristics, can work in harsh conditions, easy to realize miniaturization, integration and diversification of varieties.