CN220575046U

CN220575046U - Water-guide laser cutting machine head device

Info

Publication number: CN220575046U
Application number: CN202322214283.7U
Authority: CN
Inventors: 钟胜波; 李芝春
Original assignee: Changzhou Conovo Cnc Technology Co ltd
Current assignee: Changzhou Conovo Cnc Technology Co ltd
Priority date: 2023-08-17
Filing date: 2023-08-17
Publication date: 2024-03-12
Anticipated expiration: 2033-08-17

Abstract

The utility model discloses a machine head device of a water-guided laser cutting machine, which is assembled on a machine table portal of the water-guided laser cutting machine and is positioned above a workpiece carrying table on a machine table body. The machine head can move vertically and quickly, and the cutting quality of a workpiece is ensured.

Description

Water-guide laser cutting machine head device

Technical Field

The utility model relates to application of a water-guided laser technology, in particular to a head device of a water-guided laser cutting machine.

Background

The existing laser micro-jet system adopts a traditional double-swing-head five-axis machine head device processing platform, a machine head module of laser micro-jet is configured on a machine head device, wherein a workpiece carrying platform is fixed, the machine head device can do 5-axis motion, besides the machine head device can do rapid relative motion relative to a X, Y, Z axis of a workpiece coordinate system, the machine head device also comprises rotation of a C-axis (parallel to a Z axis) swing arm, swinging of a B-axis (parallel to a Y axis) swing head and normal direction (A axis and parallel to the Z axis) follow-up of the machine head device. For a laser micro-jet machine head device, the position of the machine head device needs to be continuously moved, and when the machine head device moves, particularly swings or rotates, the water jet position and the shape of the machine head module are also changed (besides the single A-axis follow-up of the machine head device, the path of a micro-water column beam is curved), and at the moment, the micro-water column beam can appear as discontinuous series of water drops, so that a laser beam coupled in the micro-water column beam is unstable, and the processing quality of a workpiece is finally influenced.

Therefore, the inventor designs a novel water-guided laser processing scheme, and the design key point is that a five-axis machine head is changed into a combined structure of a one-axis machine head and a four-axis workpiece carrier, so that the curve of a micro water column beam path can be avoided, and the stability of the micro water column beam is ensured. Because of the change of the movement modes of the machine head and the workpiece, the machining position and the machining angle between the machine head and the workpiece need to be quickly adjusted, and the traditional double-swinging-head five-axis machine head device machining platform cannot meet the design requirements of the novel water-guided laser cutting technical scheme.

Disclosure of Invention

In view of the above, the present utility model aims to provide a head device of a water-guided laser cutting machine, so as to quickly adjust the position of the head, and meet the design requirement of a novel water-guided laser processing system with a one-axis head and a four-axis workpiece carrier on the premise of ensuring the processing quality.

In order to solve the problems, the utility model provides a head device of a water-guided laser cutting machine, which is assembled on a machine table portal of the water-guided laser cutting machine and is positioned above a workpiece carrying table on a machine table body, and comprises a head and an A-axis translation mechanism, wherein the head is provided with a laser microjet module, and the A-axis translation mechanism drives the head to vertically move along an A-axis on the machine table portal. .

Compared with the prior art, the utility model designs the machine head device which can only move rapidly in the vertical direction aiming at the technical scheme that the five-axis machine head of the water-guided laser cutting machine is changed into a combined structure of the one-axis machine head and the four-axis workpiece carrier, and the machine head is not required to be adjusted frequently after being adjusted in place. Because the machine head only moves on one axis, the angle of the machine head is kept constant, the curve of the micro water column beam path can be avoided, the stability of the micro water column beam can be kept conveniently, and the cutting quality of a workpiece can be guaranteed.

Drawings

Fig. 1 is a schematic diagram of a whole machine of a water-guided laser cutting machine according to the present utility model.

Fig. 2 is a schematic diagram of the whole machine of the water-guided laser cutting machine.

FIG. 3 is a second schematic diagram of the head and workpiece stage system of the water-guided laser cutting machine of the present utility model.

FIG. 4 is a second schematic diagram of the head and workpiece stage system of the water-guided laser cutting machine of the present utility model.

FIG. 5 is a schematic diagram of a water-guided laser cutter head and workpiece carrier system according to the present utility model.

FIG. 6 is a schematic diagram of a water-guided laser cutter head and workpiece carrier system of the present utility model.

Fig. 7 is a schematic diagram of a head device of a water-guided laser cutting machine according to the present utility model.

Fig. 8 is a schematic diagram of a head device of the water-guided laser cutting machine of the utility model.

Fig. 9 is a schematic diagram showing the disassembly of the head device of the water-guided laser cutting machine.

FIG. 10 is a schematic diagram showing the head assembly of the water-guided laser cutting machine of the present utility model in an exploded manner.

Fig. 11 is a schematic diagram of an a-axis translation mechanism in a water-guided laser cutting machine according to the present utility model.

Fig. 12 is a schematic diagram II of an a-axis translation mechanism in the water-guided laser cutting machine according to the present utility model.

Fig. 13 is a schematic view of the removal of the head connection plate by the a-axis translation mechanism in the water-guided laser cutting machine according to the first embodiment of the present utility model.

Fig. 14 is a schematic diagram II of removing a nose connection plate by an A-axis translation mechanism in the water-guided laser cutting machine.

Fig. 15 is an exploded view of the head assembly of the water-guided laser cutting machine of the present utility model.

FIG. 16 is an exploded view of a head assembly of a water-guided laser cutter according to the present utility model.

Description of the embodiments

Referring to fig. 1-2, the overall structure of the water-guided laser cutting machine of the present utility model is shown. The water-guided laser cutting machine comprises a machine table 100, a machine head device 200 and a workpiece carrying table device 300, wherein the machine head device 200 and the workpiece carrying table device 300 are installed on the machine table 100, and a machine head in the machine head device 200 is configured with a machine head module (specifically, an LMJIP module of SYNOVA company, not specifically shown in the figure) of laser microjet. The water jet impacts the processing surface during processing; then laser pulses are emitted and via water jet, the material absorbs heat; the absorbed laser energy produces a plasma layer separating water and material; the laser pulse is completed, the plasma phenomenon is ended, and the water jet cools the material; the water jet completely takes away heat by convection; thereby realizing high-precision cutting processing of the workpiece.

As shown in fig. 1-2, the head apparatus 200 and the workpiece stage apparatus 300 are both movable on the machine 100, wherein: the handpiece of the handpiece device 200 can perform one-degree-of-freedom motion, namely, can vertically move along the axis A; the workpiece stage device 300 can perform four degrees of freedom motion, i.e., the entirety of the workpiece stage device 300 can move horizontally along the X-axis and the Y-axis, and the workpiece loaded on the workpiece stage device 300 can swing around the B-axis and rotate around the C-axis. Here, the XYZ axis of the workpiece table coordinate system is used as a reference (the machine longitudinal direction is an X axis, the transverse direction is a Y axis, the normal direction of the plane in which the X axis and the Y axis are located is a Z axis), the a axis is parallel to the Z axis, the C axis is parallel to the Z axis, and the B axis is parallel to the Y axis. When the workpiece carrier device 300 is processed, the height of the machine head device 200 is adjusted, the workpiece carrier device 300 is horizontally moved below the machine head device 200, and then the workpiece is swung or rotated, so that the machine head 200 can cut the workpiece.

Specifically, the machine 100 includes a machine tool body 102 and a machine tool gantry 101, the machine tool gantry 101 is located above the machine tool body 102, and a plurality of machine tool adjusting positions are disposed at the bottom of the machine tool body 102, which are respectively and correspondingly configured with a machine tool adjusting device 103, so that the machine tool body 102 can be conveniently and reliably adjusted to a corresponding height and kept in a horizontal state. The machine tool body 102 and the machine door frame 101 are integrally cast and formed by minerals, and a plurality of assembly holes are preset on the machine tool body 102 and the machine door frame 101 for assembling corresponding mechanisms, modules or parts, so that the machine has the advantages of high precision, shock absorption, thermal stability and corrosion resistance. The machine head device 200 is arranged on the machine table portal frame 101, so that the machine head can vertically move along the A axis; the workpiece stage device 300 is mounted on the machine tool body 102, so that the workpiece stage device 300 can horizontally move along the X-axis and the Y-axis, and the workpiece loading stage and the workpiece loaded thereon in the workpiece stage device can swing around the B-axis and rotate around the C-axis. Here, the workpiece rack sliding table of the workpiece stage device 300 is configured with a folding dust seal 104 to maintain cleanliness, and the dust seal 104 is simultaneously connected to the dust seal baffle 1041 of the machine tool body 102, specifically, the dust seal baffle 1041 is mounted at the end of the X-axis sliding rail of the workpiece rack sliding table, so that the assembly is convenient.

Therefore, the utility model designs a brand new machine head and workpiece carrier system, which changes a five-axis machine head in a traditional processing platform into a one-axis machine head and four-axis workpiece carrier combined structure, wherein the water guide laser machine head only moves in the vertical direction, so that the micro water column beam path is prevented from presenting a curve, the stability of the micro water column beam is conveniently kept, and the cutting quality of the workpiece is favorably ensured.

Referring to fig. 3-6, the construction of the water-guided laser cutting head and workpiece carrier system of the present utility model is shown. The handpiece device comprises a handpiece 201 and an A-axis translation mechanism 202, and the handpiece installation part is assembled on the front surface of the top cross beam of the gantry 101 and can vertically move along the A-axis. The workpiece stage device 300 includes a workpiece holder and a workpiece holder slide table, wherein: the workpiece frame is composed of a workpiece frame support 305, a workpiece swinging frame 302 and the like, the workpiece frame support 305 is fixed on a workpiece frame sliding table, the workpiece swinging frame 302 is arranged on the workpiece frame support 305 and can swing around a B axis under the drive of a B axis swinging mechanism 304, the workpiece 301 is rotatably arranged on the workpiece swinging frame 302 and can rotate around a C axis under the drive of a C axis rotating mechanism 303; the workpiece rest sliding table is provided with an X-axis translation mechanism 307 and a Y-axis translation mechanism 306, and the workpiece rest is driven by the X-axis translation mechanism and the Y-axis translation mechanism to horizontally slide along the X-axis or the Y-axis along with the workpiece rest sliding table. When the workpiece holder is positioned below the handpiece 201, the workpiece 301 is oscillated or rotated to perform a cutting process. In this way, the five-axis machine head in the traditional processing platform is changed into a combined structure of a one-axis machine head and a four-axis workpiece carrier, and the water guide laser machine head 201 can only move in the vertical direction, so that the stability of micro water column bundles is maintained, the workpiece cutting quality is guaranteed, and the machine head device 200 and the workpiece carrier device 300 are further described in detail below.

Referring to fig. 7-16, the construction of the head assembly of the water-guided laser cutter head and workpiece carrier system of the present utility model is shown. The machine head device 200 comprises a machine head 201 and an A-axis translation mechanism 202, wherein the A-axis translation mechanism 202 is arranged on an A-axis seat plate 203, and the A-axis seat plate 203 can be fixedly assembled to a machine head installation part arranged on the front surface of a cross beam at the top of a machine table portal 101 through screws so as to vertically move along the A-axis; only a head module 2011 is schematically shown in the head 201, and is assembled on a head seat 2012, the head seat 2012 is fixed with a head coupling plate 2027, and the head module 2011 can vertically move along the a axis under the drive of the a axis translation mechanism 202, so that the height position of the head module 2011 can be adjusted. In particular, since the head module 2011 is only vertically movable, the stability of the micro water column beam is maintained, and the stable transmission of the laser beam coupled in the micro water column beam is facilitated, so that the high-precision cutting operation is ensured to be influenced.

The a-axis translation mechanism 202 of the present utility model may take a variety of forms, and is described below as a compact, efficient, reliable, and economical mechanism.

As shown in fig. 7 to 16, the a-axis translation mechanism 202 is constituted by an a-axis motor 2021, an a-axis coupling 2022, an a-axis coupling box 2023, an a-axis driving lever 2024, an a-axis driving lever support 2025, an a-axis driving lever coupling block 2026, a head coupling plate 2027, an a-axis slide 2028, an a-axis slider 2029, a head travel switch 20210, a head detection block 20211, a head detection block 20212, and the like. Here, the a-axis motor 2021 is a stepper motor, so as to accurately control the rotation of the motor; the a-axis coupling 2022 is a diaphragm coupling, and the relative displacement of the coupled shafts can be compensated for by elastic deformation of the diaphragm. The assembly mode of the A-axis translation mechanism 202 is as follows: the A-axis driving rod support 2025, the A-axis sliding rail 2028 and the A-axis coupling box 2023 are fixedly assembled on the A-axis seat plate 203, two ends of the A-axis driving rod 2024 are supported on the A-axis driving rod support 2025, the A-axis coupling 2022 is assembled on the A-axis coupling box 2023, the A-axis driving rod 2024 is connected with the A-axis motor 2021 through the A-axis coupling 2022, the A-axis driving rod connecting block 2026 is fixedly assembled on the A-axis driving rod 2024, the machine head connecting plate 2027 is fixedly connected with the A-axis driving rod connecting block 2026 on the A-axis driving rod 202, the machine head seat plate 2012 is fixedly connected with the machine head connecting plate 2027, and the machine head module 2011 is fixedly assembled on the machine head seat plate 2012. When the a-axis motor 2021 rotates forward or backward, the a-axis coupler 2022 generates relative displacement by the deformation of the diaphragm, thereby driving the a-axis driving rod 2024 and the a-axis driving rod coupling block 2026 thereon to move up and down together, and further causing the head coupling plate 2027, the head seat 2012 and the head module 2011 to move up and down together. Thus, the head module 2011 moves up and down along with the a-axis driving rod 2024, and thus the head 201 can vertically move along the a-axis.

In order to keep stable movement of the handpiece 201, two parallel a-axis sliding rails 2028 are arranged on the a-axis seat 203, the two a-axis sliding rails 2028 are respectively provided with a plurality of a-axis sliding blocks 2029, the a-axis sliding blocks 2029 are slidably assembled on the a-axis sliding rails 2028, and the handpiece connecting plate 2027 is fixedly connected with the a-axis driving rod connecting block 2026 and the a-axis sliding blocks 2029 at the same time, so that stable sliding of the handpiece 201 is ensured. Here, the a-axis slider 2029 may be assembled by a split slider saddle 20291 and a slider pad 20292, where the slider saddle 20291 is sleeved on the a-axis slide 2028, and the slider pad 20292 is connected to the nose connecting plate 2027 simply by tightening screws, so that the assembly of the structure is quite convenient.

The present utility model needs to detect the position of the head and limit the travel thereof, for which, a head travel switch 20210, a head detection block 20211 and a head detection block 20212 are installed at the upper and lower positions of the a-axis seat plate 203, and at the same time, a head coupling plate 2027. When the handpiece 201 moves vertically up and down along the a-axis together with the head coupling plate 2027, the height position of the handpiece can be detected; meanwhile, a head travel switch 20210 provided on the a-axis seat plate 203 can limit the travel of the head 201.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that the above-mentioned preferred embodiment should not be construed as limiting the utility model, and the scope of the utility model should be defined by the appended claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.

Claims

1. The head device comprises a head and an A-axis translation mechanism, wherein the head is provided with a laser micro-jet module, and the A-axis translation mechanism drives the head to vertically move along the A-axis on the gantry of the machine.

2. The head assembly of claim 1, wherein the head comprises a head seat plate and a head module, the head module being fixedly coupled to the head seat plate.

3. The head assembly of a water-guided laser cutter of claim 2, wherein the head assembly is mounted to a head mount provided on a front face of a top beam of the gantry.

4. A water guided laser cutter head assembly as claimed in claim 3 wherein the a-axis translation mechanism is mounted to an a-axis seat plate which is fixedly mounted to a head mount provided on the front face of a top beam of the gantry.

5. The head assembly of the water-guided laser cutting machine of claim 4, wherein the a-axis translation mechanism comprises an a-axis motor, an a-axis coupler box, an a-axis drive rod support, an a-axis drive rod coupling block and a head coupling plate, wherein the a-axis motor is a stepper motor, the a-axis coupler is a diaphragm coupler, the a-axis drive rod support, the a-axis coupler box and the head coupling plate are assembled on an a-axis seat plate, two ends of the a-axis drive rod are supported on the a-axis drive rod support, the a-axis coupler is assembled in the a-axis coupler box, the a-axis drive rod is coupled with the a-axis motor through the a-axis coupler, the a-axis drive rod coupling block is fixedly assembled on the a-axis drive rod, the head coupling plate is fixedly connected with the a-axis drive rod coupling block, and the head seat plate is fixedly connected with the head coupling plate.

6. The head assembly of claim 5, wherein the a-axis translation mechanism comprises an a-axis slide rail and an a-axis slide block, the a-axis slide block is slidably mounted on the a-axis slide rail, and the head coupling plate is fixedly connected with the a-axis slide block.

7. The head assembly of claim 6 wherein the a-axis slider includes an assembled slider saddle and slider pad, the slider saddle being mounted on the a-axis slide rail and the slider pad being connected to the head link plate.

8. The head device of the water-guided laser cutting machine of claim 5, wherein the head detection block is correspondingly arranged on the head connecting plate of the head detection block of the upper and lower position mounting machine of the A-axis seat plate so as to detect the height position of the head when the head and the head connecting plate move vertically along the A-axis together.

9. The head assembly of claim 5, wherein the head travel switch is mounted to the upper and lower positions of the a-axis seat plate to limit the travel of the head when the head is moved vertically along the a-axis with the random head coupling plate.

10. The head apparatus of a water-guided laser cutting machine as claimed in claim 1, wherein a plurality of machine adjustment positions are provided at the bottom of the machine bed to correspondingly configure the machine adjustment means so as to adjust the machine bed to a corresponding height and maintain a horizontal state.