CN102416486A - Control device for boring mill - Google Patents

Abstract

The invention discloses a control device for a boring mill, which comprises a vibration sensor, a controller and a frequency inverter, wherein the vibration sensor is used for detecting vibration of a boring tool in a machining process; the controller determines the resonance of the boring tool and a machined workpiece according to the signals provided by the vibration sensor and the rotation speed sensor so as to regulate the output rotation speed of a main shaft motor; and the frequency inverter is used for receiving a signal from the controller so as to driving the main shaft motor of the boring mill. In the invention, by detecting the boring mill in a machining process, the vibration condition of the boring tool can be determined, and a control signal is output to regulate the rotation speed of the main shaft motor to avoid resonance.

Description

The control device of boring machine

Technical field

The present invention relates to the Machining Technology for Cutting field, be specifically related to a kind of control device of boring machine.

Background technology

Along with rapid development of science and technology, increasingly high to the quality and the performance demands of product.Improving the machining accuracy of product component, promptly is one of approach of dealing with problems.On the good hole of brill, carry out the essence hammer, this method has solved the low problem of boring machining accuracy, and concerning boring, the processing technology that very difficult usefulness is higher is come the further machining accuracy that improves.The traditional processing theory is not often considered processing work, and self vibration is to the influence of machining accuracy in process, and in fact the vibration of this workpiece self has caused the bottleneck that improves the workpiece machining accuracy.

Processing to the hole on the lathe is very general together operation, but after boring finished, majority need carry out right boring processing to the hole of being bored.Especially resemble the hole that perforated has relatively high expectations to axiality and roughness like this and carry out the processing of essence hammer,, more need carry out further smart clang processing it because of its complicated structure.And in the process of carrying out right boring, because in process, main shaft is rotating with fixing rotating speed always; Like this, the rotating speed of rotating shaft itself will produce the vibration of a fixed frequency, and because mostly the hammer stem on the main shaft is ferrous metal with the parts that added; Very approaching of their intrinsic frequency of being had itself; So in the process of parts processing, they very easily cause resonance, thereby; The right boring processing influence in the hole of being had relatively high expectations to axiality and roughness like this in hole especially perforated is very large, thereby is difficult to guarantee the right boring precision in hole.

Summary of the invention

To above-mentioned technical problem; The present invention provides a kind of control device of boring machine, and the present invention judges the situation of the suffered vibration of boring cutter through boring cutter is detected in process; And export control signal the rotating speed of spindle motor is adjusted, avoid the generation of resonating.

The technical scheme that realizes the object of the invention is following:

The control device of boring machine, the involving vibrations sensor is used for detecting the vibration that boring cutter receives in process; And

Controller, the signal that this controller provides according to vibrating sensor and speed probe is judged whether boring cutter and work piece resonate, and the output speed of spindle motor is adjusted; And

Frequency converter, this frequency converter receives the signal that comes from controller, and the boring spindle motor is driven.

Adopted such scheme, at first, the present invention judges the situation of the suffered vibration of boring cutter through boring cutter is detected in process, and exports control signal the rotating speed of spindle motor is adjusted, and avoids the generation of resonating.Secondly; The present invention is through being provided with a plurality of alternative motor speed adjusted values, and when adjustment, controller is selected to adjust with the maximum speed adjusted value of current speed discrepancy; More reasonably rotating speed of motor is adjusted like this, also can be avoided the generation of resonating better.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a flow chart of the present invention;

In the accompanying drawing, 10 is vibrating sensor, and 20 is controller, and 30 is frequency converter, and 40 is speed probe.

The specific embodiment

With reference to Fig. 1, the control device of boring machine of the present invention, involving vibrations sensor 10 is used for detecting the vibration that boring cutter receives in process; And

Controller 20, the signal that this controller provides according to vibrating sensor and speed probe is judged whether boring cutter and work piece resonate, and the output speed of spindle motor is adjusted; And

Frequency converter 30, this frequency converter receives the signal that comes from controller, and the boring spindle motor is driven.

And the speed probe 40 that is electrically connected with controller, this speed probe is used to detect the output speed of boring spindle motor.

With reference to Fig. 2, the control method of boring machine of the present invention may further comprise the steps:

Step 1, controller read the signal that comes from vibrating sensor.

Step 2; The vibration values that controller provides according to vibrating sensor; Whether judge current vibration values less than setting value, if the judged result of step 2 is not, then direct output adjustment signal to frequency converter is adjusted to designated value with the speed of spindle motor; If the judged result of step 2 is for being then to get into step 3.

Step 3, controller output adjustment signal to frequency converter is adjusted the rotating speed of spindle motor.In controller, be provided with a plurality of selective speed adjusted values, when step 3 output adjustment signal, controller is selected to adjust with the maximum speed adjusted value of current speed discrepancy.

Step 4, controller read the signal that comes from speed probe.

Whether step 5, controller judge current tachometer value less than setting value according to the tachometer value that speed probe provides, if judged result for being, is then returned step 1, if judged result then gets into step 6 for not.

Step 6, controller output adjustment signal to frequency converter is adjusted to designated value with the rotating speed of spindle motor.

Claims (2)

1. the control device of boring machine, it is characterized in that: the involving vibrations sensor is used for detecting the vibration that boring cutter receives in process; And

Controller, the signal that this controller provides according to vibrating sensor and speed probe is judged whether boring cutter and work piece resonate, and the output speed of spindle motor is adjusted; And

Frequency converter, this frequency converter receives the signal that comes from controller, and the boring spindle motor is driven.

2. the control device of boring machine according to claim 1, it is characterized in that: also comprise a speed probe that is electrically connected with controller, this speed probe is used to detect the output speed of boring spindle motor.

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