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Numerically-controlled machine tool PLC control method capable of prolonging service life of machine tool spindle

A technology of machine tool spindle and CNC machine tools, applied in the direction of digital control, program control, electrical program control, etc., can solve the problems of easy burnout, affecting machining accuracy, and high maintenance cost of CNC machine tools, avoiding burnout and prolonging service life. Effect

Active Publication Date: 2020-11-17
SUZHOU GAMMA AUTOMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the present invention provides a CNC machine tool control method that can prolong the life of the machine tool spindle, which can solve the problem that the existing CNC machine tool spindle is easy to burn out after long-term high-speed operation, which seriously affects the machining accuracy and causes the maintenance cost of the CNC machine tool. high problem

Method used

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  • Numerically-controlled machine tool PLC control method capable of prolonging service life of machine tool spindle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Taking the BT40(150)HSK63 CNC machine tool as an example, it is divided into the following four situations

[0024] 1. When the maximum spindle speed is 10000RPM, the safe spindle speed v' is determined to be 6000RPM, the preset time B is 1 hour, and the preset time C is 30 minutes; when the CNC machine tool is running, when the spindle is running at a higher speed of 8000-10000RPM After running for a preset time B=1 hour, the PLC control system of the machine tool controls the spindle motor to slow down and controls the spindle to run at a speed less than or equal to the safe spindle speed v'=6000RPM for a preset time C=30 minutes, and then the PLC control system controls the spindle motor to increase speed, the spindle continues to run at a speed above 6000RPM, and this cycle;

[0025] 2. When the maximum spindle speed is 12000RPM, determine the safe spindle speed v' to be 10000PM, the preset time B to be 1 hour, and the preset time C to be 30 minutes; when the CNC ma...

Embodiment 2

[0029] Taking the BT50 vertical machining center as an example, there are two situations as follows

[0030] 1. When the maximum spindle speed is 6000RPM, determine that the safe spindle speed v' is 4500RPM, the preset time B is 15 minutes, and the preset time C is 30 minutes; After running for a preset time B=15 minutes, the PLC control system of the machine tool controls the spindle motor to slow down and controls the spindle to run at a speed less than or equal to the safe spindle speed v'=4500RPM for a preset time C=30 minutes, and then the PLC control system controls the spindle motor to increase speed, the spindle continues to run at a speed above 4500RPM, and this cycle;

[0031] 2. When the maximum spindle speed is 10000RPM, determine the safe spindle speed v' to be 8000RPM, the preset time B to be 15 minutes, and the preset time C to be 30 minutes; After running for 15 minutes, the PLC control system controls the spindle motor to slow down and controls the spindle to...

Embodiment 3

[0033] Take the BT50 horizontal machining center and the BT50 belt machine tool as examples, the maximum spindle speed of the two machine tools is 6000RPM, the safe spindle speed v' is set to 4500RPM and the preset time B is 15 minutes, and time C is 30 minutes ;When the machine tool is running, when the spindle runs continuously at a high speed of 4500-6000RPM for 15 minutes, the PLC control system controls the spindle motor to slow down to a spindle speed of 4500RPM, and controls the spindle to run at a speed not higher than 4500RPM for more than 30 minutes. Then the PLC control system controls the spindle to run continuously at a speed exceeding 4500RPM, and this cycle continues.

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Abstract

The invention provides a numerically-controlled machine tool control method capable of prolonging the service life of a machine tool spindle. The problems that an existing numerically-controlled machine tool spindle is prone to being burnt out after long-time high-speed operation, machining precision is seriously affected, and the maintenance cost of a numerically-controlled machine tool is high can be solved. The safety rotating speed of a spindle is set according to the highest rotating speed of the spindle of the numerical control machine tool, after the spindle of the machine tool operatesat the rotating speed higher than the safety rotating speed for preset time B, a PLC control system controls the spindle of the machine tool to decelerate to the safety rotating speed and operate atthe spindle rotating speed required by machining after operating at the safety rotating speed for preset time C, and the cycle is repeated. Therefore, the problem of burnout of the machine tool spindle due to long-time high-speed operation can be effectively avoided, the service life of the spindle can be prolonged, maintenance cost of the machine tool spindle is reduced, and machining precision is guaranteed.

Description

technical field [0001] The invention relates to the field of machine tool equipment control, in particular to a PLC control method for a numerically controlled machine tool capable of prolonging the service life of a machine tool spindle. Background technique [0002] The machine tool spindle is the part that the machine tool drives the workpiece or the tool to rotate. It is one of the key functional components of the CNC machine tool. Its reliability level directly affects the reliability level, processing efficiency and processing accuracy of the whole machine. The spindle of the machine tool is easy to burn out after running at high speed for a long time, which seriously affects the machining accuracy of the machine tool and greatly increases the maintenance cost of the CNC machine tool. Contents of the invention [0003] In view of the above problems, the present invention provides a CNC machine tool control method that can prolong the life of the machine tool spindle,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/416
CPCG05B19/4163G05B2219/36521
Inventor 施太郎
Owner SUZHOU GAMMA AUTOMATION TECH
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