CN106271691B - A kind of full-automatic index table based on PLC controls - Google Patents

Abstract

The invention discloses a fully automatic indexing workbench based on PLC control. The workbench is rotatably arranged on a base by means of a magnetic levitation component and a guide rotation component. The workbench is provided with a weight sensor, and the rotation of the workbench is directly driven The component is driven to rotate, and the locking component is set on one side of the workbench to lock the workbench. The magnetic levitation component, direct drive component and locking component are all controlled by the PLC controller, and the magnetic levitation force of the magnetic levitation component is the same as The weight of the workpiece detected by the weight sensor is proportional to the weight. The present invention uses PLC technology to realize the automatic control of the indexing table, and uses the PLC controller to automatically control the magnetic levitation force of the electromagnet according to the weight detected by the weight sensor. Effectively improve the precision of the indexing rotation of the workbench and the machining accuracy of the workpiece. The invention adopts PLC to control the direct drive motor, which greatly reduces the volume of the workbench, improves the driving efficiency, and realizes the automatic control of the indexing rotation of the workbench.

Description

A fully automatic indexing workbench based on PLC control

technical field

The invention relates to a fully automatic indexing workbench based on PLC control, which belongs to the technical field of electromechanical integration.

Background technique

The emergence and development of CNC machine tools have effectively solved the problem of production automation of high-precision and complex parts. In the automatic processing of CNC machine tools, the workpiece needs to be rotated. At present, the indexing workbench is generally used to complete it. However, when the current indexing workbench is automatically controlled, it is generally unable to meet the requirements of heavy loads, or when heavy loads Under these conditions, the rotational indexing accuracy of the indexing table will be greatly reduced, which will affect the machining accuracy.

With the continuous development of mechatronics technology, the promotion and application of electromechanical fusion technology has improved the intelligence of the control system, and the promotion of high technology has led to the rapid development of remote unmanned control systems, thereby enhancing the mechanization of electromechanical devices. At the same time, with the continuous application and development of PLC technology, how to use mechatronics technology to improve the indexing table so that it still has high indexing rotation accuracy under heavy load, so as to improve processing accuracy.

Contents of the invention

Aiming at the existing technical problems, the present invention provides a fully automatic indexing workbench based on PLC control. The fully automatic indexing workbench is intended to solve the problems existing in the prior art.

In order to achieve the above object, the present invention provides the following technical solutions: a fully automatic indexing workbench based on PLC control, which includes a base, a workbench, a weight sensor, a magnetic levitation assembly, a guide rotation assembly, a direct drive assembly, a locking assembly and The PLC controller is characterized in that the workbench is rotatably arranged on the base by means of the magnetic levitation assembly and the guide rotation assembly, the workbench is provided with a weight sensor, and the workbench The rotation of the table is driven by the direct drive assembly, and the locking assembly is arranged on one side of the workbench so as to lock the workbench. The magnetic levitation assembly, direct drive assembly and locking components are controlled by the PLC controller, and the magnetic levitation force of the magnetic levitation component is proportional to the weight of the workpiece detected by the weight sensor.

Further, as a preference, the workbench includes an upper loading platform and a lower supporting platform, a cylindrical protrusion is provided in the middle of the bottom surface of the upper loading platform, and a cylindrical protrusion is provided in the middle of the top surface of the lower supporting platform. Cylindrical protrusions fit into grooves, the weight sensor is set on the cylindrical protrusions, and the upper stage and the lower support platform are non-rotatably arranged, and the cylindrical protrusions The height is greater than the depth of the groove by 1-2mm, the center of the bottom surface of the lower support platform is fixedly provided with a rotating shaft, the direct drive rotor is fixedly arranged on the described rotating shaft, and the center of the base is provided with a blind hole, The inner wall of the blind hole is provided with a direct-drive stator corresponding to the position of the direct-drive rotor, and the direct-drive rotor and the direct-drive stator form a direct-drive motor so as to drive the rotating shaft to drive the working The table rotates; the magnetic levitation assembly includes an upper electromagnet and a lower electromagnet, the upper electromagnet is fixedly arranged on the bottom surface of the lower support table, and the lower electromagnet is fixedly arranged on the base , the upper electromagnet and the lower electromagnet are all arranged in the limit groove formed by the lower support platform and the base, and the magnetic force of the upper electromagnet and the lower electromagnet is controlled by the PLC controller , the guide rotation assembly includes a guide optical shaft, a guide groove, a ball and a cage, wherein the base is provided with a guide groove, and the bottom surface of the lower support table is provided with the guide optical shaft, The cage is fixedly arranged on the wall of the guide groove, balls are arranged in the cage, and the light guiding axis is arranged between the balls.

Further, preferably, the locking assembly includes a locking bracket, a locking cylinder, a locking rod and a locking head, wherein the locking bracket is fixed on the base and is located on the One side of the lower supporting platform, the peripheral wall of the lower supporting platform is provided with a locking hole, the locking bracket is provided with the locking cylinder, the piston rod of the locking cylinder is connected to the The above locking rod is connected, the end of the locking rod is provided with a locking head, the solenoid valve controlling the cylinder is connected with the PLC controller, when the workbench needs to be locked, the PLC controller controls The cylinder moves so that the locking head and the locking hole are locked together.

Further, as a preference, the upper sleeve of the guide shaft is provided with a wear-resistant guide sleeve, and the guide sleeve and the ball are rollingly arranged.

Further, as a preference, an anti-rotation protrusion is provided on the cylindrical protrusion of the upper stage along the axial direction, and an anti-rotation protrusion is provided on the wall of the groove of the lower support platform to cooperate with the anti-rotation protrusion. anti-rotation groove.

Further, as a preference, the limit groove for installing the upper electromagnet and the lower electromagnet constituted by the lower supporting platform and the base is provided with a shielding member to prevent the electromagnet from interfering with the outside.

Further, as a preference, automatically controlled clamps are set on the upper stage, and the controllers of the automatically controlled clamps are connected to the PLC controller so as to be centrally controlled by the PLC controller. .

Compared with prior art, the beneficial effect of the present invention is:

The present invention utilizes PLC technology to realize the automatic control of the indexing table. At the same time, the PLC controller is used to automatically control the magnetic levitation force of the electromagnet according to the weight detected by the weight sensor, effectively improving the accuracy of the indexing rotation of the workbench and improving the For the processing accuracy of the workpiece, the invention adopts PLC to control the direct drive motor, which greatly reduces the volume of the workbench, improves the driving efficiency, and realizes the automatic control of the index rotation of the workbench.

Description of drawings

Fig. 1 is the overall structure schematic diagram of a kind of fully automatic indexing workbench based on PLC control of the present invention;

Among them, 1. Base, 2. Upper loading platform, 3. Lower supporting platform, 4. Weight sensor, 5. Direct drive rotor, 6. Direct drive stator, 7. Locking bracket, 8. Locking cylinder, 9. Lock Tight rod, 10, locking head, 11, blind hole, 12, guide optical axis, 13, ball, 14, cage, 15, upper electromagnet, 16, lower electromagnet, 17, locking hole, 18, rotating shaft .

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1, the present invention provides a technical solution: a fully automatic indexing workbench based on PLC control, which includes a base 1, a workbench, a weight sensor 4, a magnetic levitation assembly, a guide rotation assembly, a direct drive assembly, a lock The tight assembly and the PLC controller are characterized in that the workbench is rotatably arranged on the base 1 by means of the magnetic levitation assembly and the guide rotation assembly, and the workbench is provided with a weight sensor 4 , the rotation of the workbench is driven by the direct drive assembly, the locking assembly is arranged on one side of the workbench to lock the workbench, and the magnetic levitation The components, the direct drive component and the locking component are all controlled by the PLC controller, and the magnetic levitation force of the magnetic levitation component is proportional to the weight of the workpiece detected by the weight sensor.

In this embodiment, the workbench includes an upper loading platform 2 and a lower supporting platform 3, a cylindrical protrusion is arranged in the middle of the bottom surface of the upper loading platform, and a cylindrical protrusion is arranged in the middle of the top surface of the lower supporting platform 3. A groove cooperating with the cylindrical protrusion, the weight sensor 4 is arranged on the cylindrical protrusion, and the upper stage 2 and the lower support table 3 are non-rotatably arranged, And the height of the cylindrical protrusion is 1-2mm greater than the depth of the groove, the center of the bottom surface of the lower support platform is fixedly provided with a rotating shaft 18, and the direct drive rotor 5 is fixedly arranged on the described rotating shaft. The center of the base is provided with a blind hole, and the inner wall of the blind hole is provided with a direct drive stator 6 corresponding to the position of the direct drive rotor 5, and the direct drive rotor 5 and the direct drive stator 6 form a direct drive The motor is used to drive the rotating shaft to drive the workbench to rotate; the magnetic levitation assembly includes an upper electromagnet 15 and a lower electromagnet 16, and the upper electromagnet is fixedly arranged on the bottom surface of the lower support platform , the lower electromagnet is fixedly arranged on the base 1, the upper electromagnet and the lower electromagnet are all arranged in the limiting groove formed by the lower support platform and the base, the upper electromagnet and the The magnetic force of the lower electromagnet is controlled by the PLC controller, and the guide rotation assembly includes a guide optical axis 12, a guide groove, a ball 13 and a cage 14, wherein the base 1 is provided with a guide Groove, the bottom surface of the lower supporting table 3 is provided with the guide optical axis 12, the wall of the guide groove is fixedly provided with the cage 14, and the cage 14 is provided with a ball 13. The optical guiding axis is arranged between the balls.

Wherein, the locking assembly includes a locking bracket 7, a locking cylinder 8, a locking rod 9 and a locking head 10, wherein, the locking bracket 7 is fixedly arranged on the base, and is located on the One side of the lower supporting platform, the peripheral wall of the lower supporting platform is provided with a locking hole 17, the locking bracket is provided with the locking cylinder 8, and the locking cylinder 8 The piston rod is connected to the locking rod 9, the end of the locking rod 9 is provided with a locking head 10, the solenoid valve controlling the cylinder is connected to the PLC controller, when the workbench needs to be When locking, the PLC controller controls the action of the cylinder, so that the locking head cooperates with the locking hole to lock.

In addition, the upper sleeve of the guide shaft is provided with a wear-resistant guide sleeve, and the guide sleeve and the ball are rollingly arranged. An anti-rotation protrusion is arranged on the cylindrical protrusion of the upper stage along the axial direction, and an anti-rotation groove matching the anti-rotation protrusion is arranged on the wall of the groove of the lower supporting platform. The limit groove for installing the upper electromagnet and the lower electromagnet constituted by the lower support platform and the base is provided with shielding parts around to prevent the electromagnet from interfering with the outside. The upper stage is provided with automatically controlled clamps, and the controller of the automatically controlled clamps is connected with the PLC controller so as to be centrally controlled by the PLC controller. .

The present invention utilizes PLC technology to realize the automatic control of the indexing table. At the same time, the PLC controller is used to automatically control the magnetic levitation force of the electromagnet according to the weight detected by the weight sensor, effectively improving the accuracy of the indexing rotation of the workbench and improving the For the processing accuracy of the workpiece, the invention adopts PLC to control the direct drive motor, which greatly reduces the volume of the workbench, improves the driving efficiency, and realizes the automatic control of the index rotation of the workbench.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. A fully automatic indexing workbench based on PLC control, which comprises a base, a workbench, a weight sensor, a magnetic levitation assembly, a guide rotation assembly, a direct drive assembly, a locking assembly and a PLC controller, is characterized in that the The workbench is rotatably arranged on the base by means of the magnetic levitation assembly and the guide rotation assembly, a weight sensor is arranged on the workbench, and the rotation of the workbench is performed by the direct drive assembly Drive rotation, the locking assembly is arranged on one side of the workbench so as to lock the workbench, and the magnetic levitation assembly, direct drive assembly and locking assembly are all controlled by the PLC and the magnetic levitation force of the magnetic levitation assembly is proportional to the weight of the workpiece detected by the weight sensor; the workbench includes an upper loading table and a lower support table, and the A cylindrical protrusion is arranged in the middle of the bottom surface of the upper stage, and a groove matching the cylindrical protrusion is arranged in the middle of the top surface of the lower support platform, and the weight sensor is arranged on the cylindrical protrusion , and the non-rotatable arrangement between the upper stage and the lower support platform, and the height of the cylindrical protrusion is 1-2mm greater than the depth of the groove, and the center of the bottom surface of the lower support platform A rotating shaft is fixedly arranged, and a direct-drive rotor is fixedly arranged on the rotating shaft. A blind hole is arranged in the center of the base, and a direct-drive stator is arranged on the inner wall of the blind hole corresponding to the position of the direct-drive rotor. The direct-drive rotor and the direct-drive stator constitute a direct-drive motor, so as to drive the rotating shaft to drive the workbench to rotate; the magnetic levitation assembly includes an upper electromagnet and a lower electromagnet, and the upper electromagnet The iron is fixedly arranged on the bottom surface of the lower supporting platform, the lower electromagnet is fixedly arranged on the described base, and the upper electromagnet and the lower electromagnet are both arranged on the bottom surface of the lower supporting platform and the base. In the limit groove, the magnetic force of the upper electromagnet and the lower electromagnet is controlled by the PLC controller, and the guide rotation assembly includes a guide optical axis, a guide groove, a ball and a cage, wherein, The base is provided with a guide groove, the bottom surface of the lower support platform is provided with the guide optical axis, the wall of the guide groove is fixedly provided with the cage, and the cage Rolling balls are arranged inside, and the optical guide shaft is arranged between the rolling balls. 2. A fully automatic indexing workbench based on PLC control according to claim 1, characterized in that: said locking assembly comprises a locking bracket, a locking cylinder, a locking lever and a locking head, wherein , the locking bracket is fixedly arranged on the base, and is located on one side of the lower support platform, the peripheral wall of the lower support platform is provided with a locking hole, and the locking bracket The locking cylinder is arranged on the upper body, the piston rod of the locking cylinder is connected with the locking rod, and the end of the locking rod is provided with a locking head, which controls the solenoid valve of the cylinder to connect with the locking rod. When the workbench needs to be locked, the PLC controller controls the action of the cylinder so that the locking head and the locking hole are locked together. 3. A fully automatic indexing workbench based on PLC control according to claim 2, characterized in that: said guide shaft is provided with a wear-resistant guide sleeve, and said guide sleeve is connected to said guide shaft. Ball rolling setting. 4. A fully automatic indexing workbench based on PLC control according to claim 1, characterized in that: the cylindrical protrusion of the upper stage is provided with an anti-rotation protrusion along the axial direction, and the An anti-rotation groove cooperating with the anti-rotation protrusion is provided on the wall of the groove of the lower support platform. 5. A fully automatic indexing workbench based on PLC control according to any one of claims 1-4, characterized in that: the upper electromagnet and the lower A shielding piece is arranged around the limiting groove of the electromagnet to prevent the electromagnet from interfering with the outside. 6. A fully automatic indexing workbench based on PLC control according to any one of claims 1-4, characterized in that: said upper stage is provided with automatically controlled clamps, and said automatically controlled The controller of the fixture is connected with the PLC controller so as to be centrally controlled by the PLC controller.