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What are the main factors that affect the wire cutting process indicators of the screw stepper motor?

What are the main factors that affect the wire cutting process indicators of the screw stepper motor?

  • Categories:Industry News
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  • Time of issue:2021-03-26
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(Summary description)High-speed wire mechanism The high-speed wire routing mechanism is mainly composed of the upper and lower frame of the wire storage drum assembly, gear pair, screw pair, reversing device and insulating parts, which are used to drive the wire electrode to move at a certain linear speed and keep the wire electrode neat Arranged on the online storage drum.

What are the main factors that affect the wire cutting process indicators of the screw stepper motor?

(Summary description)High-speed wire mechanism The high-speed wire routing mechanism is mainly composed of the upper and lower frame of the wire storage drum assembly, gear pair, screw pair, reversing device and insulating parts, which are used to drive the wire electrode to move at a certain linear speed and keep the wire electrode neat Arranged on the online storage drum.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2021-03-26
  • Views:0
Information

High-speed wire mechanism The high-speed wire routing mechanism is mainly composed of the upper and lower frame of the wire storage drum assembly, gear pair, screw pair, reversing device and insulating parts, which are used to drive the wire electrode to move at a certain linear speed and keep the wire electrode neat Arranged on the online storage drum. The wire electrode moving system The wire frame guide wheel mechanism and the wire walking mechanism constitute the wire electrode moving system. The main function of the wire holder is to support the wire electrode when the wire electrode moves at a given linear speed, so that the working part of the wire electrode maintains a certain geometric angle with the plane of the worktable. The guide wheel is located at the end of the cantilever of the wire frame, and the wire frame supports the electrode wire through the guide wheel. According to the function, the wire frame can be divided into three types: fixed type, lifting type and offset type; according to the structure, it can be divided into cantilever type and gantry type.

The pulse power supply of wire rod stepper motor wire cutting machine is wire cutting, and the pulse power supply of electric discharge machining is usually called high-frequency power supply. It is the main component of the CNC wire cutting machine tool and one of the main factors that affect the wire cutting process indicators. The basic composition of the wire cutting pulse power supply The wire cutting pulse power supply is composed of a pulse generator, a driver stage, a power amplifier and a DC power supply. The composition of the coordinate table The coordinate table is mainly composed of four parts: carriage, guide rail, screw pair, gear pair or worm gear pair.

1. The clipboard sliding frame is mainly composed of four parts: the lower frame, the middle sliding frame, the upper sliding frame and the workbench. Usually, the lower bracket is fixedly connected to the bed. The middle carriage is placed on the lower carriage, and the movement direction is coordinate Y. The upper carriage is placed on the middle carriage, and the moving direction is the coordinate X direction. The workbench passes through the insulator. Connected to the upper bracket. Among them, one end of the upper carriage and the middle carriage is in the form of a cantilever, which is used to place the traction motor.

2. The vertical and horizontal carriages of the guide rail coordinate table move back and forth along the guide rail. Therefore, higher requirements are put forward for the accuracy, rigidity and wear resistance of the guide rail. In addition, the guide rail should make the carriage move flexibly and stably. Wire cutting machine tools often use rolling guides. Because the rolling guide rail can reduce the frictional resistance between the guide rails, it is convenient for the worktable to realize precise micro-movement, and the lubrication method is simple. The disadvantage is that it is difficult to maintain the oil film between the contact surfaces, and the vibration resistance is poor. There are several types of rolling guides, such as ball guides, roller guides and needle guides.

3. The function of the screw drive pair is to convert the rotation movement of the drive motor into the linear displacement movement of the carriage. In order to make the transmission of the screw pair accurate, the screw and nut should be accurate, and the accuracy should be 6 or higher.

4. Gear pair The transmission between the stepper motor and the lead screw is usually realized through a gear pair. Due to the influence of the tooth side clearance, the clearance between the shaft and the bearing, and the elastic deformation in the transmission chain, when the drive gear on the main shaft of the stepping motor changes the transmission direction, the transmission idling will occur.

In order to reduce and eliminate idling, the following measures should be taken: (1) Reduce gear reduction stages as much as possible, and strive to reduce the error of gear transmission accuracy from the structural point of view. (2) The adjustable structure of the center distance of the gear pair is adopted, which is realized by changing the fixed position of the stepping motor. (3) The driven gear or intermediate wheel is divided into two-wheel form along the axial direction. When assembling, ensure that the two tooth profiles are in contact with the two sides of the movable tooth respectively. When the stepper motor changes the direction of rotation, the lead screw can quickly reflect accordingly.

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