CN102298355A

CN102298355A - Starting mechanism of computer numerical control (CNC) lathe

Info

Publication number: CN102298355A
Application number: CN2011101959816A
Authority: CN
Inventors: 沈皓然
Original assignee: Suzhou Goldway Technologies Co Ltd
Current assignee: Suzhou Goldway Technologies Co Ltd
Priority date: 2011-07-14
Filing date: 2011-07-14
Publication date: 2011-12-28

Abstract

The invention belongs to the field of computer numerical control (CNC) lathes and in particular relates to a starting mechanism of a CNC lathe. The start mechanism comprises double-hand start buttons, a safety monitoring module, safety output equipment, a spindle control unit and a spindle motor, wherein the double-hand start buttons are connected with the safety monitoring module; the safety monitoring module is connected with the safety output equipment; the safety output equipment is connected with the spindle control unit; the spindle control unit is connected with the spindle motor; and the double-hand start buttons, the safety monitoring module, the safety output equipment, the spindle control unit and the spindle motor are connected in sequence. The start mechanism has the following beneficial effects: after the double-hand start buttons are introduced, the machine can not be started when the buttons are mistakenly pressed by a single hand, thus protecting operators.

Description

The actuating mechanism of numerically controlled lathe

Technical field

The invention belongs to the numerically controlled lathe field, relate in particular to a kind of actuating mechanism of numerically controlled lathe.

Background technology

Numerically controlled lathe is a kind of high precision, high efficiency automated machine tool, is equipped with multistation cutter tower or power cutter tower, but complex parts such as lathe processing linear cylinder, oblique line cylinder, circular arc and various screw thread, groove, worm screw.

Cause industrial injury during the numerically controlled lathe careless manipulation easily, so numerically-controlled machine is equipped with safety control system, safety control system is made up of safety input equipment, security control electrical equipment and safe output device usually.Safe input equipment has emergency stop switch, safety door limit switch, safe grating etc.The security control electrical equipment includes safety relay, safety PLC and safety bus.Safe output device is contactor, relay or the valve etc. in the major loop normally.The design in security control loop must meet the safe class of this chassis bed.Be different from common auxiliary reclay or common PLC in the subsidiary loop, safety relay, safety PLC have its special structure.Safety relay even occur under the dead failure condition of contact weldering in inside, also can disconnecting power safety from load, simultaneously by built-in redundancy, force the structure of break contact, function such as detections certainly, the failure condition of detection internal circuit and outside input and output control loop.And safety PLC is with the redundancy of multiprocessor, different technology, and has self detecting function in real time, can guarantee the safe operation of control system equally.Safety relay, safety PLC are connected with the main shaft control module of numerically controlled lathe by safe output device, and then the stall of control spindle motor and main shaft.

The start button of present numerically controlled lathe is the button formula, and easily mistake is pressed start button, and the another hand is placed on improperly and comes to harm on the position.Therefore be necessary to introduce the better start button of a kind of security performance.

A kind of both hands button is arranged, and 2 often open 2 normally closed 4 signalling contacts altogether is connected to security monitoring module (safety relay, safety PLC etc.), by the security monitoring module state of both hands button is judged.And if only if when two buttons press in 0.5s simultaneously, and the security monitoring module just has output, the action that can start the machine of this system; The fault of any one contact all can monitoredly be judged; When any hand leaves button, safety feature just stops output at once, cuts off power source, thereby realizes protection people's purpose.Shifting to an earlier date or postponement work of any button danger can not occur.

Summary of the invention

The objective of the invention is to overcome the problems referred to above, a kind of actuating mechanism that can guarantee the numerically controlled lathe of operator safety is provided.

For achieving the above object, the technical solution adopted in the present invention is: the actuating mechanism of numerically controlled lathe, it is characterized in that: comprise both hands start button, security monitoring module, safe output device, main shaft control module, spindle motor, the both hands start button is connected with the security monitoring module, the security monitoring module is connected with safe output device, safe output device is connected with the main shaft control module, the main shaft control module is connected with spindle motor, and both hands start button, security monitoring module, safe output device, main shaft control module, spindle motor connect successively.

Security monitoring module of the present invention is safety relay or safety PLC, and safe output device is contactor or relay.

Principle of work of the present invention: the both hands start button is as safe input equipment, and 2 often open 2 normally closed 4 signalling contacts altogether is connected to the security monitoring module, by the security monitoring module state of both hands start button is judged.And if only if when two buttons press in 0.5s simultaneously, and the security monitoring module just has output, and makes the spindle motor running by safety output device, main shaft control module; Shifting to an earlier date or postponement work of any button can not start the machine mistakenly.

The beneficial effect that the present invention has: after introducing the both hands start button, the singlehanded Shi Buhui that by mistake touches the button starts the machine, and has protected operating personnel.

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Description of drawings

Fig. 1 is the front elevation that is equipped with the numerically controlled lathe of actuating mechanism of the present invention;

Fig. 2, Fig. 3 are parts connection layout of the present invention.

Wherein, 1 control panel, 2 both hands start buttons.

Embodiment

Figure is the preferred embodiments of the present invention, below in conjunction with accompanying drawing the present invention is further described: wherein, and 1 control panel, 2 both hands start buttons.

Embodiment one:

Referring to Fig. 1 and Fig. 2, the actuating mechanism of numerically controlled lathe, comprise both hands start button 2, safety relay, relay, main shaft control module, spindle motor, safety relay is connected with relay, relay is connected with the main shaft control module, the main shaft control module is connected with spindle motor, both hands start button 2 for need both hands simultaneously by start button, both hands start button 2 is connected with safety relay.

Both hands start button 2 is positioned on the control panel 1.Safety relay is as the security monitoring module, and relay is safe output device.

Both hands start button 2 is as safe input equipment, and 2 often open 2 normally closed 4 signalling contacts altogether is connected to safety relay, by safety relay the state of both hands start button 2 is judged.And if only if when two buttons press in 0.5s simultaneously, and safety relay just has output, and makes the spindle motor running by relay, main shaft control module; Shifting to an earlier date or postponement work of any button can not start the machine mistakenly.

After introducing the both hands start button, the singlehanded Shi Buhui that by mistake touches the button starts the machine, and has protected operating personnel; Safety relay occurs under the dead failure condition of contact weldering in both hands start button inside, can reach the purpose of protection to the disconnecting from load of power safety.

Embodiment two:

Referring to Fig. 1 and Fig. 3.Be different from embodiment one, the security monitoring module of present embodiment is a safety PLC, and safe output device is a contactor, and all the other are with embodiment one.

After introducing the both hands start button, the singlehanded Shi Buhui that by mistake touches the button starts the machine, and has protected operating personnel; Safety PLC is with the redundancy of multiprocessor, different technology, and has self detecting function in real time, can guarantee the safe operation of control system.

The foregoing description does not limit the present invention in any form, and all employings are equal to the technical scheme that mode obtained of replacement or equivalent transformation, all drop in protection scope of the present invention.

Claims

1. the actuating mechanism of numerically controlled lathe, it is characterized in that: comprise both hands start button (2), security monitoring module, safe output device, main shaft control module, spindle motor, both hands start button (2) is connected with the security monitoring module, the security monitoring module is connected with safe output device, safe output device is connected with the main shaft control module, the main shaft control module is connected with spindle motor, and both hands start button (2), security monitoring module, safe output device, main shaft control module, spindle motor connect successively.

2. the actuating mechanism of numerically controlled lathe according to claim 1, it is characterized in that: described security monitoring module is a safety relay.

3. the actuating mechanism of numerically controlled lathe according to claim 1, it is characterized in that: described security monitoring module is a safety PLC.