CN220575047U - Water-guide laser cutting machine workpiece frame - Google Patents

Abstract

The utility model discloses a workpiece frame of a water-guided laser cutting machine, which is supported on a workpiece frame sliding table of a workpiece carrying table device so as to horizontally move along an X axis and a Y axis, wherein the workpiece frame is provided with a B axis swinging mechanism and a C axis rotating mechanism so that the workpiece swinging frame can swing around the B axis under the driving of the B axis swinging mechanism, and a workpiece loading head arranged on the workpiece swinging frame can rotate around the C axis under the driving of the C axis rotating mechanism. The utility model can quickly adjust the angle of the workpiece and ensure the cutting quality of the workpiece.

Description

Water-guide laser cutting machine workpiece frame

Technical Field

The utility model relates to application of a water-guided laser technology, in particular to a workpiece frame 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 workpiece support of a water-guided laser cutting machine, so as to quickly adjust the angle of a workpiece, and meet the design requirement of a novel water-guided laser processing system with a one-axis machine 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 workpiece frame of a water-guided laser cutting machine, a workpiece frame sliding table borne on a workpiece carrying table device is used for horizontally moving along an X axis and a Y axis, the workpiece frame is provided with a B axis swinging mechanism and a C axis rotating mechanism, so that the workpiece swinging frame can swing around the B axis under the driving of the B axis swinging mechanism, and a workpiece loading head arranged on the workpiece swinging frame can rotate around the C axis under the driving of the C axis rotating mechanism.

Compared with the prior art, the utility model designs the workpiece frame capable of swinging and rotating the workpiece aiming at the scheme that the five-axis machine head in the existing water-guided laser cutting machine head and workpiece carrier system is changed into a one-axis machine head and four-axis workpiece carrier combined structure, and the angle of the workpiece can be quickly adjusted after the workpiece moves to a processing position. Because the water guide laser head moves only in the vertical direction, the angle of the head is kept constant, the curve of the micro water column beam path is avoided, the stability of the micro water column beam is conveniently kept, and the workpiece cutting quality is favorably ensured.

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 view of a workpiece carrier device of a water-guided laser cutting machine according to the present utility model.

FIG. 8 is a second schematic view of a workpiece carrier device of a water-guided laser cutting machine according to the present utility model.

FIG. 9 is a schematic illustration of a workpiece carrier device for a water-guided laser cutting machine according to the present utility model with drag chains and accessories removed.

FIG. 10 is a second schematic view of the workpiece carrier device of the water-guided laser cutting machine of the present utility model with drag chains and accessories removed.

FIG. 11 is a schematic view of a workpiece holder for a water-guided laser cutting machine according to the present utility model.

FIG. 12 is a second schematic view of a workpiece holder of a water-guided laser cutting machine according to the present utility model.

Fig. 13 is a schematic view of a workpiece holder of a water-guided laser cutting machine according to the present utility model.

Fig. 14 is a schematic view of a workpiece holder removal C-axis rotation mechanism for a water-guided laser cutting machine according to the present utility model.

FIG. 15 is a second schematic view of a mechanism for removing the C-axis rotation of the workpiece holder of the water-guided laser cutting machine of the present utility model.

Fig. 16 is an exploded view of the water-guided laser cutter work rest of the present utility model with the C-axis rotation mechanism removed.

Fig. 17 is an exploded view of a workpiece holder of a water-guided laser cutting machine according to the present utility model.

Fig. 18 is an exploded view of a workpiece holder of a water-guided laser cutting machine 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. 7-18, the construction of a workpiece stage assembly in a water-guided laser cutter head and workpiece stage system of the present utility model is shown. The workpiece carrier device 300 is composed of two main structures of a workpiece holder and a workpiece holder sliding table.

As shown in fig. 7 to 18, the work rest is constituted by a work rest support 305, a work rest swing frame 302, and the like, the work rest support 305 is fixed to the work rest slide table, and the work rest swing frame 302 is rotatably attached to the work rest support 305; the work rest is provided with a B-axis swinging mechanism 304 and a C-axis rotating mechanism 303: the workpiece swinging frame 302 can swing around the B axis under the drive of the B axis swinging mechanism 304; the workpiece 301 is rotatably mounted on a workpiece swing frame 302 and is rotatable about the C-axis by a C-axis rotation mechanism 303, wherein the workpiece 301 on the workpiece loading head 3037 has a middle cross section flush with the B-axis swing axis. Thus, when the workpiece swing frame 302 is turned 180 degrees, the front and back working surfaces of the workpiece are positioned at the same horizontal position.

As shown in fig. 7 to 18, the workpiece frame sliding table is provided with an X-axis translation mechanism 307 and a Y-axis translation mechanism 306, wherein the Y-axis translation mechanism 306 is composed of electrical devices such as a Y-axis sliding plate 3061, a Y-axis sliding rail 3062, a Y-axis linear motor electron 3063, a Y-axis linear motor mover 3064, a Y-axis drag chain 3060, and the like, and the X-axis translation mechanism 307 is composed of electrical devices such as an X-axis sliding plate 3071, an X-axis sliding rail 3072, an X-axis linear motor electron 3073, an X-axis linear motor mover, an X-axis drag chain 3070, and the like, and the workpiece frame can horizontally slide on the machine table along the X-axis and the Y-axis along with the workpiece frame sliding table under the driving of the X-axis translation mechanism 307 and the Y-axis translation mechanism 306. When the work piece holder is positioned below the head 201, the head 201 is vertically moved to a certain height, and then the work piece 301 is swung or rotated, so that the work piece 301 can be cut.

As shown in fig. 11 to 18, the work rest includes a work rest support 305, a work rest 302, a B-axis swing mechanism 304, and a C-axis rotation mechanism, the work rest support 305 and the work rest 302 being respectively L-shaped; the bottom wall 3051 of the work rest support 305 is fixed with the work rest sliding table; the side wall 3022 of the workpiece swing frame 302 is rotatably mounted on the side wall 3052 of the workpiece frame support 305, and swings under the drive of the B-axis swing mechanism 304; the workpiece loading head 3037 rotatably mounts a top wall 3021 of the workpiece swing frame 302, the workpiece loading head 3037 being capable of loading the workpiece 301 by glue bonding or otherwise, the workpiece loading head 3037 and the workpiece 301 loaded thereby being capable of being rotated by the C-axis rotation mechanism 303. Here, the present utility model is schematically distinguished by 301A (large workpiece) and 301B (small workpiece) for workpieces 301 of different specifications, respectively, and does not represent the actual structure of the workpieces.

The B-axis wobbler 304 is a motor direct drive mechanism, and includes a B-axis motor 3041 and a B-axis speed reducer 3042, the B-axis motor 3041 being a stepping motor, and the B-axis speed reducer 3042 being a turntable speed reducer. The B-axis oscillating machine 304 is assembled in the following manner: the side wall 3052 of the work support 305 is provided with a through hole 3054, the B-axis reducer 3041 is mounted through the through hole 3054, the housing of the B-axis motor 3041 is fixed to the housing of the B-axis reducer 3041 by bolts, the power shaft of the B-axis motor 3041 is coupled to the turntable of the B-axis reducer 3041, and the turntable of the B-axis reducer 3041 is fixed to the side wall 3022 of the work swinging frame 302 by bolts. Thus, when the B-axis motor 3041 rotates forward or backward, the work swinging frame 302 can be driven to swing around the B-axis. Here, the sensor 3053 is mounted on the side wall 3052 of the work piece holder 305, and the detection block 3027 is provided on the side wall 3022 of the work piece swing frame 302, so that the swing angle of the work piece swing frame 302 can be easily detected.

The C-axis rotation mechanism 303 is a motor drive+belt transmission mechanism, and includes a C-axis driving mechanism and a C-axis driven mechanism, the C-axis driving mechanism is mounted on a driving mechanism mounting position 3023 of a top wall 3021 of the workpiece swing frame 302, the C-axis driven mechanism is mounted on a driven mechanism mounting position 3026 of the top wall 3021 of the B-axis workpiece swing frame 302, and transmission is performed between the C-axis driving mechanism and the C-axis driven mechanism through a transmission belt, so as to drive the workpiece loading head 3037 and the workpiece to rotate around the C-axis. Here, the belt is preferably a timing belt 3038, which has no relative slip with the pulley, so that a strict transmission ratio can be ensured.

In the present utility model, the C-axis driving mechanism is composed of a C-axis motor 30313, a C-axis coupling plate 30312, a C-axis speed reducer 30310, a driving shaft 30311, a C-axis seat plate 3039, etc., wherein: the C-axis motor 30313 is a stepping motor, which serves as a power source of the C-axis rotating mechanism 303; the C-axis speed reducer 30310 is a harmonic speed reducer, and a flexible bearing is assembled on the wave generator to enable the flexible gear to generate controllable elastic deformation, and the flexible gear is meshed with a rigid gear to transmit motion and power for gear transmission. The concrete assembly mode of the C-axis driving mechanism is as follows: the housing of the C-axis motor 30313, the C-axis coupling plate 30312, the housing of the C-axis reducer 30310, and the C-axis seat plate 3039 are integrally connected by bolts and fixedly assembled to the top wall 3021 of the workpiece swing frame 302 by the C-axis seat plate 3039; the C-axis motor 30313, the C-axis speed reducer 30310 and the driving shaft 30311 are sequentially coupled, and the specific assembly mode may be: the wave generator of the C-axis reducer 30310 is connected with a power shaft of the C-axis motor 30313, a rigid gear of the C-axis reducer 30310 is fixed with a housing of the C-axis reducer 30310, a flexible gear of the C-axis reducer 30310 is mounted on an output shaft of the C-axis reducer 30310, a chassis of the driving shaft 30311 is fixed with the flexible gear of the C-axis reducer 30310, and a driving belt pulley can be arranged at the top end of the driving shaft 30311 to wind the synchronous belt 3038.

In the present utility model, the C-axis driven mechanism is composed of a driven shaft 3031, a driven seat plate one 3033, a driven bearing one 3032, a driven seat plate two 3036, a driven bearing two 3034, an adjusting nut 3035, a workpiece loading head 3037, and the like: the driven shaft 3031 is rotatably assembled above and below the top wall 3021 of the workpiece swing frame 302 by an upper support composed of a driven seat plate one 3033 and a driven bearing one 3032, and a lower support composed of a driven seat plate two 3036 and a driven bearing two 3034; a driven pulley can be arranged at the top end of the driving shaft 30311 to wind the synchronous belt 3038; a workpiece loading head 3037 is arranged at the bottom end of the driving shaft 30311, and the workpiece loading head 3037 is preferably of a hoop type mounting structure, so that the mounting, dismounting and position adjustment are convenient; the adjustment nut 3035 is an externally open nut that fits over the driven shaft and is positioned between the lower support and the workpiece loading head 3037 to facilitate adjustment of the position of the loading head 3037.

In the above-described C-axis rotating mechanism 303, the C-axis motor 30313 is connected to the driving shaft 30311 through the C-axis speed reducer 30310; the bottom end of a driven shaft 3031 of the C-axis driven mechanism is fixedly provided with a workpiece loading head 3037, and the workpiece loading head 3037 can load the workpiece 301 by adopting glue bonding and other modes; the timing belt 3038 is wound around a driving shaft 30311 (optionally, a driving pulley, not shown) and a driven shaft 3031 (optionally, a driven pulley, not shown) respectively, for transmitting power between the driving shaft 30311 and the driven shaft 3031. When the C-axis motor 30313 rotates, the driving shaft is driven to rotate by the C-axis speed reducer 30310, and then the driven shaft 3031 is driven to rotate by the synchronous belt 3038, so that the workpiece loading head 3037 on the driven shaft 3031 is driven to rotate, and finally the workpiece 301 is driven to rotate around the C-axis. In particular, the B-axis workpiece swing frame 302 is provided with a sensor 3024 for detecting the rotation angle of the workpiece 301, and the fixed mounting sensor 3024 may be fixed to the top wall 3021 of the B-axis workpiece swing frame 302 by a nut 3025, and may be specifically brought into proximity with and aligned with the edge portion of the workpiece 301.

The utility model optimizes the installation positions of the B swinging mechanism and the C shaft rotating mechanism, wherein one of the installation positions is as follows: the intermediate cross section of the workpiece 301 is preferably aligned with the axis of the B-axis motor 3041 and the B-axis speed reducer 3042, i.e., the intermediate cross section of the workpiece 301 on the workpiece loading head 3037 is aligned with the B-axis swing axis, so that the intermediate cross section of the workpiece 301 is always on the B-axis swing axis when the B-axis swinging motor 304 drives the workpiece swing frame 302 and the workpiece 301 thereon to swing. Specifically, the mounting position of the workpiece loading head 3037 can be made to meet the assembly requirements by adjusting the adjustment nut 3035 as described above.

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 (10)

1. A workpiece frame of a water-guided laser cutting machine is characterized in that a workpiece frame sliding table carried on a workpiece carrying table device is used for horizontally moving along an X axis and a Y axis, the workpiece frame is provided with a B axis swinging mechanism and a C axis rotating mechanism, so that the workpiece swinging frame can swing around the B axis under the driving of the B axis swinging mechanism, and a workpiece loading head arranged on the workpiece swinging frame can rotate around the C axis under the driving of the C axis rotating mechanism.

2. The water guided laser cutter work piece holder of claim 1 wherein the intermediate cross section of the work piece on the work piece loading head is flush with the B-axis oscillation axis.

3. The water guided laser cutter work rest of claim 1, wherein the work rest includes a work rest support and a work swing rest, the work rest support fixedly holding a work rest slide table, the work swing rest rotatably mounted to the work rest support.

4. A water-guided laser cutter workpiece holder as recited in claim 3, wherein the workpiece holder support and the workpiece swing frame are each L-shaped, the bottom wall of the workpiece holder support is fixed to the workpiece holder slide table, the side wall of the workpiece swing frame is rotatably mounted to the side wall of the workpiece holder support, and the workpiece loading head is rotatably mounted to the top wall of the workpiece swing frame.

5. The water-guided laser cutter workpiece holder of claim 4, wherein the B-axis swinging mechanism comprises a B-axis motor and a B-axis speed reducer, wherein the B-axis motor is a stepping motor, the B-axis speed reducer is a turntable speed reducer, the B-axis speed reducer is penetratingly installed in a through hole formed in a side wall of a workpiece holder support, a housing of the B-axis motor is fixed with the housing of the B-axis speed reducer, a power shaft of the B-axis motor is connected with a turntable of the B-axis speed reducer in a shaft manner, and a turntable of the B-axis speed reducer is fixedly connected with the side wall of the workpiece swinging frame.

6. The water guided laser cutter workpiece holder of claim 4 wherein the C-axis rotation mechanism comprises a C-axis driving mechanism and a C-axis driven mechanism, the C-axis driving mechanism is mounted at a driving mechanism mounting position of a top wall of the workpiece swing frame, the C-axis driven mechanism is mounted at a driven mechanism mounting position of a top wall of the B-axis workpiece swing frame, and the C-axis driving mechanism and the C-axis driven mechanism are driven by a driving belt to drive the workpiece loading head and the workpiece loaded by the workpiece loading head to rotate around the C-axis, wherein the driving belt is a synchronous belt.

7. The water-guided laser cutting machine work rest of claim 6, wherein the C-axis driving mechanism comprises a C-axis motor, a C-axis connecting disc, a C-axis speed reducer, a driving shaft and a C-axis seat plate, wherein the C-axis motor is a stepper motor, the C-axis speed reducer is a harmonic speed reducer, a shell of the C-axis motor, the C-axis connecting disc, a shell of the C-axis speed reducer and the C-axis seat plate are connected into a whole and fixedly assembled on the top wall of the work swinging frame through the C-axis seat plate, the C-axis motor, the C-axis speed reducer and the driving shaft are sequentially connected, a wave generator of the C-axis speed reducer is connected with a power shaft of the C-axis motor, a rigid wheel of the C-axis speed reducer is fixed with a shell of the C-axis speed reducer, a flexible wheel of the C-axis speed reducer is arranged on an output shaft of the C-axis speed reducer, a chassis of the driving shaft is fixed with a flexible wheel of the C-axis speed reducer, and a driving belt wheel is arranged on the top end of the driving shaft to wind a synchronous belt.

8. The workpiece holder of claim 6, wherein the C-axis driven mechanism comprises a driven shaft, a driven seat plate I, a driven bearing I, a driven seat plate II, a driven bearing II, an adjusting nut and a workpiece loading head, wherein an upper support formed by the driven seat plate I and the driven bearing I, a lower support formed by the driven seat plate II and the driven bearing II are rotatably assembled on the top wall of the workpiece swinging frame, and a driven belt wheel is arranged at the top end of the driving shaft to wind a synchronous belt; a workpiece loading head is arranged at the bottom end of the driving shaft, and the workpiece loading head can be of a hoop type mounting structure; the adjusting nut is a nut with an opening at the outer side, is sleeved on the driven shaft and is positioned between the lower support and the workpiece loading head.

9. A workpiece holder for a water-guided laser cutting machine as claimed in claim 3, wherein a sensor is mounted on a side wall of the workpiece holder support, and a detection block is provided on a side wall of the workpiece swing frame to detect a swing angle of the workpiece swing frame.

10. A water guided laser cutter work piece holder as claimed in claim 3 wherein the top wall of the work piece swing frame mounts a sensor which is adjacent and aligned with an edge portion of the work piece to detect the angle of rotation of the work piece.