1. Servo tool holder control solution of NC machining center

The NC tool holder is the most common auxiliary device in the NC lathe. It is the main component in the tool exchange system. According to its function, the number of tools that can be installed on the turret is generally 6, 8, 10, 12 or more. The structure of the turret is generally rotary. The props are installed on the tool holder in the circumferential direction. , Can install radial turning tool, axial turning tool, drill bit, boring tool. The turning machining center can also install axial milling cutters and radial milling cutters. It can make the NC lathe complete a variety of or all processing procedures in one clamping of the work piece, in order to shorten the auxiliary time of processing and reduce the errors caused by multiple installations of the work piece during the processing, thereby improving the processing efficiency and processing accuracy of the machine tool. With the development of modern science and technology, NC tool holders are developing in the direction of high intelligence and high precision. Can achieve precise control, effectively improve labor productivity and shorten production time.

Compared with the world's advanced manufacturing industry, China's CNC tool holder industry has a big gap. The national standard was formulated in 2007, but the standard requirements are relatively low. Although each enterprise has independent intellectual property rights, the products are still mainly low-grade. The middle and high grade products are imported from Taiwan and abroad, among which the representative ones are Baruffaldi and Duplomatic in Italy; Schott in Germany and Shaote in Taiwan.

2. Zhishan Tool Holder Control Servo

Zhishan servo specializes in a non-standard servo product for the tool holder industry, which integrates all the control logic. The NC system only needs to give the target tool number and operation instructions through IO. The servo will choose the optimal operation according to the instructions. When the path is running, the current tool number and the completed model will be given after the position is reached, so that the system can judge whether the tool holder is turned into position or whether the tool is disordered. In addition, it also adds the function of position power-off record (the tool holder does not need to return to zero operation when it is powered on again), the wrong tooth alarm function, the function of judging the position in place at the moment of power-on, and the collection optimization function.

3. Tool holder control application configuration solution

In the original control system, the control function of the turret controller is integrated into the dedicated drive of the mountain servo.
The original system: NC system + turret controller + servo drive + servo motor;
New system: NC system + Zhishan K/K2 series tool holder control dedicated servo driver + servo motor.

4. Solution advantages

1) Cost saving, you can save the original tool holder controller;

2) Simplified wiring, reduce the failure rate;

3) Improve system reliability;

4) Prolong system service life;

5) Can provide up to 15 tool positions;

6 ) Simplify the operation process. No need to return to the zero position operation after power-on;

7) Improve processing efficiency. The tool holder can be set in the shortest time, saving time to change.

The following picture shows the application of Zhishan special tool servo with Taiwan's new generation NC system on the 6-tool turret of the machining center