RU215822U1 - CNC 2-AXIS CUTTING AND ENGRAVING MACHINE - Google Patents

Abstract

The utility model belongs to the light industry and is used for cutting and/or engraving leather, fabric, composite and other materials. The task (technical problem) is to expand the arsenal of cutting and engraving devices of the 2-coordinate type with CNC. The technical result of the utility model is to realize the purpose of a cutting and engraving device of a 2-coordinate type with CNC. The objective and technical result of the utility model is the replacement of expensive component parts of the movement axes in the laser system and, consequently, the reduction in cost and simplification of its design. The absence of dynamic loads on the working tool allows the use of lighter and cheaper composite materials for the creation of components using a 3D printer. The ability to cut at higher speeds, because due to the lack of cutting forces, the material does not move, which usually occurs in knife cutting processes. The absence of the Z-axis, with its actuators and electronic components, on the working carriage increases the working speed of the cutting and engraving device. The task and the technical result are achieved by the fact that the cutting and engraving device of the 2-coordinate type with CNC contains a radiation generator mounted motionless on the racks, a cutting table for the material, on which a power frame is installed on plastic legs, consisting of four mutually parallel connected angular internal connectors of aluminum profiles, transport carriages made of composite material, with transport rollers fixed on them, mounted on longitudinal guides Y, one of which has a stepper motor that transmits movement to a belt drive, thanks to which the movable guide X of the working carriage moves on the transport rollers, forming a portal with a working carriage, on which the laser head is rigidly fixed and a stepping motor is installed in engagement with a belt drive, with the help of which the working carriage has the ability to move along the fixed longitudinal guides Y and relative to the step The first motor of the movable guide X, the working carriage, has an optical system that supplies the laser beam from the radiation generator to the material placed on the cutting table, and the optical system consists of three mirrors, the first of which is mounted on a plastic stand, which is fixed on the cutting table, the second is located directly on the portal, and the third - on the laser head, mounted on a working carriage, moving from the stepper motor and belt drive along the guide of the portal, and the focusing device, which is located inside the laser head, mounted with the possibility of movement relative to the cutting table in two mutually perpendicular planes using individual stepper motors.

Description

The utility model belongs to the light industry and is used for cutting and/or engraving leather, fabric, composite and other materials.

A device for cutting is known (Application: 94033469/12), an expert system, including built-in application knowledge, is used with a controlled cutting system to automatically determine the optimal feed rate in the cutting process based on some of the number of possible changing cutting parameters of the system, in which the programmable controller sets and specifies a configuration file previously entered containing data on a specific cutting system control parameter in order to direct the operation of the cutting system in accordance with the contour describing the path that the cutter carried by the cutting system should follow, and the cutter moves in X, Y coordinate space and Z above the cutting surface of the cutting system. The X, Y, and Z axis motors are driven by the control current to move the torch at the speed set by the configuration file. The cutting force that the cutter develops is determined in predetermined sections of the contour in order to determine the resistance of the layout, and the actual cutting force is compared with the optimal cutting force, and the feed rate is corrected upwards when the actual force is less than the expected force, downwards when the actual the force is greater than the expected force, and the cutting system is turned off to rebuild the contours if the actual force exceeds the expected force by a predetermined amount. The feed rate is calculated for the contour, taking into account information regarding the resistance of the material to be cut, data on the sharpness of the cutter, the level of vacuum in the knife motor and the speed of the knife.

The disadvantage of this device is the presence of mechanical impact of the cutting tool on the product.

Known installations for laser curly cutting of flat products, chosen as analogues, for example, the installation of the SANSEI company manufactured in Japan [1], STAR installations developed by LAZERFAN, Russia [2], include the following main elements: technological laser, cutting table, radiation transport system, control system, protective cabin.

The disadvantages of the installations are the presence of expensive and time-consuming during their installation of component mechanisms for movement along the main coordinates of movement (X and Y).

The task (technical problem) is to expand the arsenal of cutting and engraving devices of the 2-coordinate type with CNC.

The technical result of the utility model is to realize the purpose of a cutting and engraving device of a 2-coordinate type with CNC.

The set task and the technical result are achieved by the fact that the cutting and engraving device of the 2-coordinate type with CNC contains a radiation generator mounted motionless on the racks, a cutting table for the material, on which, on plastic legs, a power frame is installed, consisting of four mutually connected in parallel angular internal connectors of aluminum profiles, transport carriages made of composite material, with transport rollers fixed on them, mounted on longitudinal guides Y, on one of which a stepper motor is installed, which transmits movement to a belt drive, thanks to which, on the transport rollers, the movable guide X of the working carriage, forming a portal with a working carriage, on which the laser head is rigidly fixed and a stepper motor is installed in engagement with a belt drive, with the help of which the working carriage has the ability to move along the fixed longitudinal guides Y and relatively the stepper motor of the movable guide X, the working carriage, has an optical system that provides the laser beam from the radiation generator to the material placed on the cutting table, and the optical system consists of three mirrors, the first of which is mounted on a plastic stand, which is fixed on the cutting table, the second is located directly on the portal, and the third - on the laser head mounted on the working carriage, moving from the stepper motor and belt drive along the guide of the portal, and the focusing device, which is located inside the laser head, mounted with the possibility of movement relative to the cutting table in two mutually perpendicular planes using individual stepper motors.

The essence of the utility model is illustrated by drawings, where:

- in Fig. 1 - cutting and engraving device of 2-coordinate type with CNC;

- in Fig. 2 - laser head in section.

The cutting and engraving device of the 2-axis type with CNC contains a radiation generator 1, fixedly mounted on a stand 2, a cutting table 3 for material, on which, on plastic legs 4, a load frame 22 is installed, consisting of four mutually parallel connected aluminum corner internal connectors profiles, transport carriages 13 made of composite material, with transport rollers 21 attached to them, mounted on longitudinal guides Y 5, in addition, one of which has a stepper motor 7, which transmits movement to a belt drive 9, thanks to which, on transport rollers 21 the movable guide of the working carriage X 18 moves with the working carriage 15, on which the laser head 14 is rigidly fixed and the stepper motor 16 is installed in engagement with the belt drive: 17, with the help of which the working carriage 15 has the ability to move along the fixed longitudinal guides Y 5 and relatively stepper motor 16 move the main guide of the working carriage X 18, in addition, the device has an optical system that provides the laser beam from the radiation generator 1 to the material placed on the cutting table 3, and the optical system consists of three mirrors 10, 11, 12, the first of which is installed on a plastic stand 23, which is fixed on the cutting table 3, the second is located directly on the portal 6, and the third is on the laser head 14, fixed on the working carriage 15, moving from the stepper motor 16 and the belt drive 17,! along the portal guide 18, and the focusing device 24, which is located inside the laser head 14, mounted for movement relative to the cutting table 3 in two mutually perpendicular planes using individual stepper motors 7 and 16.

The electric motor 7, with the installed electromagnetic clutch 19, is mounted on the vertical shaft 8 together with the drive pulley of the toothed belt drive 20.

The laser beam from the radiation generator 1 falls on the mirror 10, is reflected from it and hits the mirror 11, which directs the beam to the mirror 12, reflected from which, the beam hits the focusing device 21, installed perpendicular to the surface of the material being cut, after which the beam burns through the material .

The portal 6 and the working carriage 15 move in two mutually perpendicular planes Y according to a given program, corresponding to the layout of the patterns on the material. The focal length of the device must correspond to the thickness of the material being cut.

The cutting and engraving device of 2-coordinate type with CNC contains a power frame, where two parallel profiles of the power frame are longitudinal guides Y, with transport carriages made of composite material, on one of which a stepper motor is installed. On these carriages, thanks to a belt drive, the movable guide of the working carriage X moves with the working carriage, on which the laser head is rigidly fixed and a stepper motor is installed in engagement with the belt drive, with the help of which the working carriage has the ability to move along the fixed guides and relative to the stepping motor of the moving guide.

The operation of the proposed cutting and engraving device is carried out as follows: at the signal of the control system, the Eneble energy signal is simultaneously supplied to the stepper motors 7, 16. The movement relative to the X coordinate is set by the stepper motor 16, the movement of the working carriage 15 with the laser head 14 mounted on it is carried out with by means of a transport belt 17 turned upside down through the low friction element of roller ball bearings. This design allows you to reduce noise effects, as well as to eliminate skew and jamming of the carriages during operation.

For the movement of the Y-axis, the stepper motor 7 is responsible, which transmits the rotational movement using a toothed-belt transmission 9 inverted through a ball bearing, which converts the movement into a linear movement of the transport carriages 13, moving them along the Y-axis relative to the fixed longitudinal guides 5. The magnitude of this movement is equal to the specified value of the Y-axis movement according to the specified contour, pattern, or G-code program.

Stepper motors are controlled using a control system, which includes the following main elements: a power supply, a control board and a stepper motor control driver. The main commands coming from the microstep multichannel controller to the stepper motor are (STEP / DIR / ENEBLE), the “STEP” signal is a discrete step or microstep signal processed by the stepper motor, the “DIR” signal is responsible for the direction of rotation of the stepper motor with binary coding. The ENEBLE signal determines whether the stepper motor is powered on or off.

The control system is powered by a power supply unit that converts the input voltage of 220 V into the consumed operating voltage of the machine. The layout of the control signal is carried out through a special adapter or a corrective program code that allows you to adapt standard PC connectors with specialized outputs of the control controller of the cutting and engraving device.

The rigidity of the structure is ensured by a closed power frame with additional profile longitudinal guides 5, the positioning accuracy of which is ensured by the implementation of the attachment points of the guides on modern CNC equipment. Errors in the heights of the longitudinal guides 5 are minimized due to the heat treatment of the main elements of the power frame in a furnace using the technology of low-temperature metal tempering.

The absence of dynamic loads on the working tool allows the use of lighter and cheaper composite materials for the creation of components using a 3D printer. The ability to cut at higher speeds, because due to the lack of cutting forces, the material does not move, which usually occurs in knife cutting processes. The absence of the Z-axis, with its actuators and electronic components, on the working carriage increases the working speed of the cutting and engraving device.

Transport carriages 13 are made of composite materials using a 3D printer, which allows minimizing dynamic loads by reducing the mass of the carriage transportation mechanism, the use of plastics in the manufacture of structural elements of the installation has reduced the cost, as well as solving the issue of interchangeability of the main blocks due to wear or accident.

The absence of dynamic loads on the working tool allows the use of lighter and cheaper composite materials for the creation of components using a 3D printer. The ability to cut at higher speeds, because due to the lack of cutting forces, the material does not move, which usually occurs in knife cutting processes. The absence of the Z-axis, with its actuators and electronic components, on the working carriage increases the working speed of the cutting and engraving device.

List of sources:

[1] SANSEIL0906 laser cutting machine https://mmtex.ru/product/mashina_dlya_lazemogo_raskroya_sansei_l0906/

[2] Laser machine 6040 START PRO

httpa://laserfan.rf/lazernyj-stanok-6040-start-pro-50vt-80vt-100vt

Claims (1)

Cutting and engraving device of 2-coordinate type with CNC contains a radiation generator mounted motionless on racks, a cutting table for material, on which a power frame is installed on plastic legs, consisting of four aluminum profiles mutually connected in parallel by angular internal connectors, transport carriages made of composite material with transport rollers fixed on them, mounted on longitudinal guides Y, on one of which a stepper motor is installed, which transmits movement to a belt drive, due to which the movable guide X of the working carriage moves on the transport rollers, forming a portal with a working carriage, on which the laser is rigidly fixed head and a stepper motor is installed in engagement with a belt drive, with the help of which the working carriage has the ability to move along the fixed longitudinal guides Y and relative to the stepper motor of the movable guide X, the working carriage, has an op optical system that supplies the laser beam from the radiation generator to the material placed on the cutting table, and the optical system consists of three mirrors, the first of which is mounted on a plastic stand, which is fixed on the cutting table, the second is located directly on the portal, and the third - on a laser head mounted on a working carriage moving from a stepper motor and a belt drive along the gantry guide, and a focusing device located inside the laser head, mounted to move relative to the cutting table in two mutually perpendicular planes using individual stepping motors.

Images