CN108381033A - A kind of CNC laser engravings integrated machine tool - Google Patents

Abstract

The invention discloses a kind of CNC laser engravings integrated machine tool, including mainframe, processing head, protective cover and device storehouse, the mainframe is the frame that metal structure surrounds, and the bottom of the mainframe is provided with machine table；The mainframe is provided with ball-screw in the range of surrounding, the ball-screw is fixedly connected on the opposite side wall of the mainframe；The back side of the processing head is provided with C-channel, and the processing head is arranged by C-channel on the ball-screw, and can be moved along the ball-screw；The processing head includes spindle motor, and the spindle motor is clamped with cutter；The processing head further includes a laser module, and the laser module is disposed in parallel in the side wall of the motor retained part, and the laser module is for positioning and carving.

Description

A CNC laser engraving integrated machine tool

technical field

The invention relates to an engraving machine tool, in particular to an integrated engraving machine tool combining laser engraving and CNC engraving.

Background technique

Both CNC engraving machine tools and laser engraving machine tools have become very popular, but the close combination of the two to achieve product processing is relatively small. In order to apply the processing characteristics of the two to a certain type of product, it is often necessary to position the laser engraving machine first. In the future, the product will be carved, and then moved to the CNC engraving machine for processing. At this time, repeated positioning is required. There are also products that replace the motorized spindle with a laser module before engraving. It is not easy to replace the spindle with laser, and the positioning is not accurate.

On the other hand, CNC engraving machine tools and laser engraving machine tools often need to manually adjust the movement of the machine tool spindle (laser module) during use to realize the positioning of the machining origin, which requires a lot of energy and time for the operator, and the positioning effect It varies from person to person, and the final product processing effect is average, but consumables and time are wasted. On the other hand, household desktop-level machine tools have entered thousands of households, which also puts forward more requirements for the safety performance and humanized operation of machine tools, all of which require machine tools to be able to quickly locate and ensure a safe operating environment for operators.

At the same time, with the advancement of intelligent manufacturing and Industry 4.0, personalized services have become a norm. Desktop machine tools are small precision machine tools developed for individual users and DIY groups, which can realize DIY needs such as laser engraving and CNC cutting. Extending the simplified desktop machine tool to individuals is also a good way to achieve personal re-education.

Contents of the invention

The purpose of this invention is to design a desktop CNC laser engraving integrated machine tool, which can not only quickly locate the processing origin through laser, capture the processing range, realize laser or spindle processing, but also realize fully enclosed type through the safety switch on the protective cover. Safe processing. In order to achieve the above object, the present invention provides the following technical solutions: a CNC laser engraving integrated machine tool, including a main frame, a processing head, a protective cover, and a device warehouse, the main frame is a frame surrounded by a metal structure, the The bottom of the main frame is provided with a processing table; the range surrounded by the main frame is provided with a ball screw, and the ball screw is fixedly connected to the opposite side wall of the main frame; the back side of the processing head A C-shaped groove is provided, and the processing head is arranged on the ball screw through the C-shaped groove, and can move along the ball screw; the processing head includes a spindle motor, and the spindle motor holds Tool; the processing head also includes a laser module, the laser module is arranged side by side on the side wall of the motor clamping part, and the laser module is used for positioning and engraving.

In some specific embodiments, a moving platform is arranged on the processing table, and the moving platform is fixed on a driving screw, and the driving screw is used to drive the moving platform on a horizontal plane perpendicular to the ball wire bar exercise.

In some specific embodiments, an accommodating space is provided outside the side wall of the main frame, and a main control board is arranged in the accommodating space, and the main control board is connected to the spindle motor and the laser module respectively. Connect and adjust and control CNC engraving, laser focus and laser engraving.

In some specific embodiments, the movement of the spindle motor and the mobile platform is driven by a stepping motor; a set of power supplies are also provided in the accommodating space, and the power supplies include 24V and 48V, and the 24V is used for The main control board and the stepper motor are powered, and the 48V is used to drive the cutter head of the spindle motor for engraving.

In some specific embodiments, a pair of knife blocks are arranged on the mobile platform.

In some specific embodiments, a baffle is provided between the cutter head of the spindle motor and the ball screw to reduce the influence of dust on the transmission device during processing.

In some specific embodiments, the main frame is a hexahedron structure, and the surrounding and top are isolated by protective covers made of transparent materials. The connection of the protective cover is provided with a silent seal.

In some specific embodiments, a sealing sensor connected to the main control board is provided inside the machine tool to detect whether the side wall is in a closed state.

In some specific embodiments, a touchable display is provided outside the main frame, and the touchable display is connected to the main control board for switching cutting modes and selecting functions.

In some specific embodiments, USB data interfaces and SD card slots respectively connected to the main control board are provided on the outside of the main chassis to satisfy online and/or offline operations.

By adopting the above technical solution, it has the following beneficial effects compared with the prior art:

(1) In the present invention, the CNC engraving component and the laser engraving component are arranged on one body, and two engraving methods can be realized in the same device. At the same time, the output power of the laser component can be adjusted, and the output power of the laser can be adjusted by PWM waves. The machine tool can obtain a low-power laser beam to locate the processing origin and identify the processing range. This can quickly obtain the processing information of the machine tool, and complete the processing operation of the machine tool more intuitively; when the power is increased, the laser component performs engraving, forming two engraving schemes.

(2) This solution can realize the simultaneous work of laser and spindle through tool switching of Gcode code.

(3) This machine tool adopts a fully enclosed machine body, and a door opening detection device is installed inside the machine body to ensure that the machine tool can only work when the hatch door is closed, making the machine tool safe.

(4) By identifying the code of the processing file, the machine tool will automatically select laser processing or tool processing, and can realize two modes of product laser processing and CNC processing at the same time to obtain diversified products.

(5) The combination of laser knife and ordinary knife helps us to obtain more diversified products with different effects faster. Moreover, the relative position of the laser knife and the ordinary knife head is fixed, and the two kinds of engraving knives can be overlapped by simple coordinate modification, so as to avoid the problem of inaccurate focus caused by switching engraving knives.

Description of drawings

Accompanying drawing 1 is the structural diagram of the whole machine;

Accompanying drawing 2 is main frame diagram;

Accompanying drawing 3 is machine tool processing head;

Accompanying drawing 4 is protective cover cover plate;

Accompanying drawing 5 is the diagram of the rear side device compartment;

Accompanying drawing 6 is automatic tool setting figure;

Accompanying drawing 7 is machine processing flowchart;

Label description:

1‐main frame, 2‐processing head, 3‐protective cover, 4‐component compartment;

2.1-Spindle motor, 2.2-Laser module, 2.3-Light strip;

3.1-Mute seal, 3.2-Hydraulic push rod, 3.3-Protection cover;

2.11-tool setting block, 2.12-tool.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar extensions without violating the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

Please refer to Fig. 1 to Fig. 4, a kind of CNC laser engraving integrated machine tool of this embodiment, comprises main frame 1, processing head 2, protective cover 3, and device warehouse 4, and main frame 1 is a frame surrounded by metal structure , the bottom of the main frame 1 is provided with a processing table; the range surrounded by the main frame 1 is provided with a ball screw 1.7, and the ball screw 1.7 is fixedly connected to the opposite side wall of the main frame 1; the back side of the processing head 2 is provided There is a C-shaped groove, and the processing head 2 is set on the ball screw 1.7 through the C-shaped groove, and can move along the ball screw 1.7; the processing head 2 includes a spindle motor 2.1, and the spindle motor 2.1 holds a tool 2.12; the processing head The part 2 also includes a laser module 2.2, the laser module 2.2 is arranged side by side on the side wall of the motor clamping part, and the laser module is used for positioning and engraving.

A mobile platform is set on the processing table, and the mobile platform is fixed on a transmission screw. The servo motor on the transmission screw can drive the mobile platform to move perpendicular to the ball screw on the horizontal plane, so as to realize the gap between the material to be processed and the cutter head. They move perpendicularly to each other to form the X-axis and Y-axis of the coordinates; this technical solution is a conventional technical means commonly used in the prior art, and will not be repeated here.

Please refer to Fig. 2, the main frame 1 is made of aluminum plates as the two sides of the gantry of the frame body, the transmission part is driven by the ball screw 1.7 to drive the machine tool processing head 2 to realize the transmission, and the optical axis 1.5 is used as the main supporting part of the machine tool to meet the rigidity of the whole machine. The user completes the operation of the machine tool by clicking on the liquid crystal display 1.1, and the rotary encoder 1.2 can realize the shaking operation of the machine tool, and when the rotary encoder 1.2 is pressed, the machine tool can be stopped in an emergency. The user can realize the offline processing operation of the machine tool by inserting the SD card into the SD card slot 1.3, and the user can realize the online processing operation of the machine tool by connecting the serial port USB cable to the serial port USB interface 1.4. The one-key tool setting interface of the machine is arranged at the sheet metal slit on the upper side of the rotary encoder. When the one-key tool setting positioning block is connected to the tool setting interface, automatic positioning in the Z-axis direction of the machine tool can be realized.

Please refer to Fig. 3 , the machining head of the machine tool is equipped with three parts, the spindle motor 2.1, the laser module 2.2, and the light strip 2.3. Among them, the spindle motor 2.1 can hold the tool to realize the processing of the workpiece by the tool; the laser module 2.2 can release the laser through PWM to engrave the workpiece. The low-power laser can quickly locate the processing origin and capture the processing range. The light strip board is used to reflect the working conditions of the machine tool. When the machine tool is in the emergency stop state, running state, and idle state, the light strip board responds as red, blue, and green respectively. A gray baffle is installed on the back of the machine tool processing head, which can block most of the dust raised by processing and protect the ball screw and optical axis in the X-axis direction of the machine tool.

Shown in accompanying drawing 4 is the protective cover 3.3 of lathe, hydraulic pressure push rod 3.2, protective cover cover plate, contact switch and mute seal 3.1. When the acrylic protective cover is lightly covered, pull it back through the hydraulic push rod 3.2, and when it is completely closed, the contact switch will be triggered, and the machine tool can work at this time, otherwise the machine tool will be in an emergency stop state and cannot be operated. Maintenance personnel can close the content of the safety door in the operation panel-developer options to perform professional maintenance.

Further, the cover plate of the protective cover is installed on the front side of the machine tool, in the form of a front and rear flip cover. When the safety door function is opened and the protective cover is closed, the contact switch will be pressed. At this time, the machine tool is in an idle state and can operate normally. When the protective cover is opened, the contact switch bounces off, and the machine tool is in an emergency stop state and cannot be operated. The cover of the protective cover is attached to the curved surface of the fuselage, and a silent rubber seal is pasted on the outside of the curved surface of the fuselage to meet the silent operation of the machine tool.

Accompanying drawing 5 is the rear side device compartment, is installed with driving board, switching power supply. The drive board can realize the drive of the motor, the drive of the electric spindle, the drive of the laser module, the detection of the switch signal of the limit switch corresponding to the motor, the detection of the switch signal of the cover opening device, etc. There are two switching power supplies, 24V and 48V, of which 24V can supply power to the main control board and stepper motor drive, while 48V can only supply power to the drive spindle. A silent fan is installed on the cover outside the device compartment.

As shown in Figure 6, it is a schematic diagram of the automatic tool setting state of the machine tool. The automatic tool setting block 2.11 is placed directly under the spindle tool 2.12 of the machine tool, and the interface on the other side is connected to the interface of the main control board, which can realize the Z direction of the machine tool in the physical space. Work on the knife.

The following selection takes the offline processing mode of SD card as an example, and further describes this scheme in detail in combination with the operation process during specific implementation: After starting the device, insert the SD card into the USB card slot, reset the machine, and the machine tool will automatically reset to the initial position at this time. The automatic reset every time it is turned on helps the machine tool to recover from the possible abnormal state of the last processing;

After the reset is completed, fix a conventional Ausong plate with a size of 275mm*200mm on the processing base surface of the machine tool; select the tool replacement, and select the appropriate processing tool according to the nature of the processing file. This time we will clamp one on the machine tool A single-edged helical milling cutter with a shank diameter of 3.175mm and a blade diameter of 2mm;

We use one-key tool setting to complete the zero point determination in the direction of the height of the consumables, that is, the tool setting in the direction of the Z axis;

Enter the processing interface, select the processing file for processing the wooden ruler, and then select the origin of processing through the laser, and try to go through the laser, a laser beam that is visible to the naked eye but weak in power continues to shoot out. After observing the laser movement, it is determined that the processing range is not Select OK after exceeding the clamping range, and the original setting in the XY direction is selected at this time. Then enter the processing interface, and click processing; the processing process uses the laser as a laser knife to leave the scale of the wooden ruler on the Ausong board, then select the tool as the processing knife, and cut the wooden ruler from the Ausong board. After the finished product is taken out, the final product is obtained through simple grinding.

Although the present invention is disclosed as above with preferred embodiments, it is not used to limit the claims. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection should be based on the scope defined by the claims of the present invention.

Claims (10)

1. a kind of CNC laser engravings integrated machine tool, which is characterized in that including mainframe, processing head, protective cover and device Storehouse, the mainframe are the frame that metal structure surrounds, and the bottom of the mainframe is provided with machine table；In the mainframe The ball-screw being fixedly connected on the opposite side wall of the mainframe is provided in the range of surrounding；The back of the body of the processing head Side is provided with C-channel, and the processing head is arranged by C-channel on the ball-screw, and can be moved along the ball-screw It is dynamic；The processing head includes spindle motor, and the spindle motor is clamped with cutter；The processing head further includes a mode of laser Group, the laser module are fixed at the side wall of the motor retained part side by side, and the laser module is for positioning and carving It carves.

2. a kind of CNC laser engravings integrated machine tool according to claim 1, which is characterized in that be arranged in the machine table There are a mobile platform, the mobile platform to be fixed on a turn-screw, the turn-screw is for driving the mobile platform It is moved in the horizontal plane perpendicular to the ball-screw.

3. a kind of CNC laser engravings integrated machine tool according to claim 1, which is characterized in that the mainframe side wall Outside is provided with an accommodating space, is provided with master control borad in the accommodating space, the master control borad respectively with the spindle motor And the laser module connects and adjusts and control CNC engravings, laser focusing and laser engraving.

4. a kind of CNC laser engravings integrated machine tool according to claim 2 or 3, which is characterized in that the spindle motor, The mobile of mobile platform is driven using stepper motor；One group of power supply is additionally provided in the accommodating space, the power supply includes 24V It is used to power for the master control borad and stepper motor with two kinds of 48V, the 24V, the 48V is for driving the spindle motor Cutter head is carved.

5. a kind of CNC laser engravings integrated machine tool according to claim 4, which is characterized in that set on the mobile platform It is equipped with a feeler block.

6. a kind of CNC laser engravings integrated machine tool according to claim 1, which is characterized in that the knife of the spindle motor A baffle is provided between head and the ball-screw, dust has an impact transmission device when reducing processing.

7. a kind of CNC laser engravings integrated machine tool according to claim 1, which is characterized in that the mainframe is one or six The protective cover that face body structure, surrounding and top are all made of transparent material is isolated, at least one face of surrounding is prevented Shield is set as retractable connection, and the junction of the protective cover is provided with mute strip of paper used for sealing.

8. a kind of CNC laser engravings integrated machine tool according to claim 7, which is characterized in that be provided in the lathe One seal sensor being connect with master control borad, for detecting whether side wall is closed.

9. a kind of CNC laser engravings integrated machine tool according to claim 3, which is characterized in that the outside of the mainframe Be provided with one can touch control display, it is described can touch control display connect with the master control borad, for switching cut mode and work( The selection of energy.

10. a kind of CNC laser engravings integrated machine tool according to claim 3, which is characterized in that the outside of the mainframe Be provided with the USB data interface that is connect respectively with master control borad can SD card card slot, to meet online and/or off-line operation.