Carving machine introduction

  Carving machine It is a kind of CNC machine tool. CNC milling machine with small tool, high power and high speed spindle motor for small milling or soft metal processing equipment.

  There is no concept of engraving machine in foreign countries. They are mainly machining centers (computers). However, the machining center has its shortcomings, especially when machining small molds with small tools, it will not work, and the cost is very high.  At the beginning of the country, only the concept of CNC engraving machine, the advantage of the engraving machine is engraving. If the hardness of the processing material is relatively large, it will not be able to do so.The appearance of the engraving machine can be said to fill the gap between the two. The engraving machine can be engraved or milled.

  The multi-function engraving machine is a CNC machine tool that combines engraving, milling, cutting, drilling and tapping. It can realize the switching of various functions through automatic tool change, and realize multi-purpose of one machine. It can be carved at high speed and medium speed. Milling, grinding, drilling, and low-speed rigid tapping.

  The carving machine is mainly divided into three parts: the machine bed, the control calculator and the electric control cabinet.

  Machine bed: sheet metal, table, spindle, lead screw, tool setting, servo, machine tool illumination, CCD locator, automatic tool changer and machine base. The machine base is divided into: marble base and cast iron base.

  Control calculator: control card and computer.

  Electric control cabinet: hand wheel, hand-held, operation panel, alarm light, XYZ axis drive, spindle inverter, I/O converter board, fan, power supply, etc.

  Control computer: It is mainly a control system adapted to the customer's production and processing conditions.

1. It can drive the electric spindle to achieve stable high-speed operation of 30,000 revolutions, and meet the high-precision engraving and milling function;

2. Precise positioning control function ensures the position of the spindle feed point is consistent;

3. When tapping is required, the speed stability is high (closed loop speed accuracy ±0.02%), the acceleration/deceleration response time is fast (3 seconds or even lower acceleration/deceleration time), and the low speed cutting torque is large (the highest attackable M10 screw hole);

4. Cooperate with the numerical control system of the machine tool, including receiving and feedback system speed pulse signal, terminal start-stop control, etc.

5. Make the machine tool more versatile. High-speed and medium-speed engraving, grinding, drilling, and low-speed rigid tapping;

6. The electrical sealed structure of the inverter is better adapted to the harsh environment on site;

1. Steady speed accuracy: The speed fluctuation error of the spindle running stably, the error control requirement is within 0.3%.

2. rapid acceleration / deceleration: In order to improve work efficiency, the acceleration and deceleration time is required to be as short as possible, generally required to complete in 3 to 5 seconds.

3. to avoid overshoot phenomenon: from one speed to another speed of the oscillator, generally require the overshoot is as small as possible.

4. low-speed heavy cutting requirements: low-frequency large torque output is required when machining some workpieces. Low-speed heavy cutting is the most important indicator to determine whether the drive is suitable for multi-function engraving and milling electromechanical spindle applications.

5. high-speed light cutting requirements: high-speed CNC system and excellent servo motor characteristics, the error is as small as possible.

6. high environmental adaptability: due to the special nature of machine tool processing materials, on-site metal dust, oil, moisture and other harsh environments, the driver needs a higher level of protection;

7. Low-speed rigid tapping: When machining the internal thread, synchronously control the rotation of the spindle and the feed of the Z-axis, so that the precision of the tapping can be guaranteed. The rigid tapping process requires the spindle to be positioned and the zero speed torque is maintained. When the tool is fed, the spindle is in the positioning state, so the position of the knife edge is consistent every time the tool is fed, the speed of tapping and cutting is synchronized, and the speed precision is extremely high, so as to ensure that the thread will not be threaded when the spindle is cut. Broken.

1. It can drive the electric spindle to achieve stable high-speed operation of 30,000 revolutions, and meet the high-precision engraving and milling function;

2. Precise positioning control function ensures the position of the spindle feed point is consistent;

3. When tapping is required, the speed stability is high (closed loop speed accuracy ±0.02%), the acceleration/deceleration response time is fast (3 seconds or even lower acceleration/deceleration time), and the low speed cutting torque is large (the highest attackable M10 screw hole);

4. Cooperate with the numerical control system of the machine tool

5. Make the machine tool more versatile. High-speed and medium-speed engraving, grinding, drilling, and low-speed rigid tapping;

6. The electrical sealed structure of the inverter is better adapted to the harsh environment on site;

  This solution adopts ES850S driver (including differential encoder PG card) + high speed spindle motor 7.5KW (500HZ, 14703RPM, 380V, 16A) for servo positioning control application on machine tool thread and rigid tapping.

  When the spindle is at high speed, the compensation amount is optimized by adjusting the internal parameters. When the closed-loop vector control is performed, the steady-speed accuracy is very high.

  The rigid tapping process, tapping and return speed accuracy meets the requirements. Different types of threaded hole tapping of M3~M10 can be made separately.