Control device combining numerical control machine tool with ultrasonic cutting tool holder

Abstract

The invention discloses a control device combining a numerical control machine tool with an ultrasonic cutting tool holder. The numerical control machine tool is connected with a numerical controller and used for controlling a spindle of the machine tool to work. The ultrasonic cutting tool holder is assembled on the spindle and connected with an ultrasonic controller. The ultrasonic controller comprises a processing unit, a signal current source, a detection unit and an output unit, so that a current source with a frequency and an amplitude signal is output to the ultrasonic cutting tool holder, and the ultrasonic cutting tool holder is made to conduct ultrasonic machining on a machined part. The numerical controller of the numerical control machine tool is connected to the ultrasonic controller through a set of digital input contacts and a set of analog input contacts, so that an ON-OFF command is conducted on the ultrasonic controller through the digital input contacts, output power analog control is conducted on the ultrasonic controller through the analog input contacts, and thus the output amplitude of the ultrasonic controller to the ultrasonic cutting tool holder is adjusted and controlled.

Description

technical field [0001] The invention relates to a control device combining a numerical control processing machine tool and an ultrasonic knife handle, which utilizes the interconnection of a numerical controller and an ultrasonic controller to achieve optimal control of processing operations. Background technique [0002] Such as figure 1 As shown, the ultrasonic knife handle mainly includes a knife handle body 10, an expansion rod 11 locked to the knife handle body 10, and a processing tool 12 locked to the end of the expansion rod 11, which uses an ultrasonic controller 20 to output a current with frequency and amplitude signals source to the expansion rod 11, so that the piezoelectric material on the expansion rod 11 generates high-frequency vibrations, and then the processing tool 12 at the end of the expansion rod 11 performs high-frequency vibration cutting operation beyond the sound wave frequency. Since the cutting surface of the high-frequency vibrating machining t...

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Problems solved by technology

[0004] like figure 1 As shown, the frequency and amplitude of the current existing ultrasonic knife handle are completely controlled and output by the ultrasonic controller 20, and are not connected to the numerical controller of the numerically controlled processing machine tool. After the tool change operation, the machine tool operator must manually adjust the output frequency and amplitude of the ultrasonic controller 20 according to the type of ultrasonic tool handle and the processing conditions of the workpiece. The workload, and in terms of processing quality and processing efficiency, will also cause the following adverse effects:

[0005] 1. The ultrasonic knife handle will change the position of the connection and fixation due to the difference in the locking force between the knife handle body 10 and the expansion rod 11, and the processing tool 12 will also change the position of the tool tip due to wear and tear. Therefore, when these factors change, the ultrasonic knife handle is applicable The corresponding frequency will also change accordingly, but the machine operator cannot observe the slight changes of these factors, so it is impossible to make the ultrasonic controller 20 output the correct corresponding frequency by manual adjustment at any time, thus affecting the processing quality of the workpiece

[0006] 2. There are many changes in the processing conditions of the workpiece. As far as the processing sequence is concerned, the machine tool operator cannot adjust the output amplitude of the ultrasonic controller 20 at any time according to the processing sequence. Therefore, in the processing sequence, a single output amplitude is used. Executing processing operations, such an operation mode may cause impact damage to the processing tool and cracking of the workpiece, thereby affecting the processing quality and processing efficiency of the workpiece

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