CN216758559U - Composite processing equipment - Google Patents

Abstract

A composite processing apparatus comprising: the lathe bed is provided with a workbench for bearing a workpiece to be processed, and the workbench comprises a first sliding mechanism which can translate along a first horizontal direction and drives the workbench to translate along the first horizontal direction; a second slide mechanism including first and second rams translatable with respect to the table in a second horizontal direction different from the first horizontal direction; a machining assembly disposed on the first ram and translatable relative thereto in a vertical direction, the machining assembly having a first machining device disposed thereon; and the composite processing assembly is arranged on the second ram, can translate along the vertical direction relative to the second ram, comprises a laser processing device and a second mechanical processing device, and also comprises a composite processing rotating shaft which at least can enable the laser processing device to rotate. The composite processing equipment can improve the processing precision, shorten the processing period and reduce the processing cost.

Description

Composite processing equipment

Technical Field

The utility model relates to the field of composite processing of workpieces, in particular to composite processing equipment capable of machining and laser processing workpieces.

Background

In many fields, precision machining of a workpiece, for example, precision texturing of a workpiece, is required. In the conventional precision machining process, a plurality of machining processes are generally performed, for example, turning, grinding, texturing, and the like, wherein the turning, grinding, and the like are mechanical machining types and are performed by machining equipment such as a lathe and a grinding machine, and the texturing is a precision machining process and is generally performed by a laser machining method.

Therefore, in the existing precision machining process, a plurality of devices are often required to cooperate with each other, a workpiece is transferred among the plurality of devices, and the workpiece is subjected to repeated clamping and positioning. This repeated multiple clamping positioning of the workpiece increases the risk of machining errors and potentially increases the magnitude of the error, thereby reducing the final machining accuracy of the workpiece. In addition, the risk of damage and scrapping of the workpiece is also increased by the repeated transmission and repeated clamping of the workpiece. Further, the precision texture processing process of a workpiece performed in cooperation with multiple devices has problems of many processing steps, a long processing period, a large processing difficulty, and the like, and also causes an increase in the production cost of the workpiece.

Thus, in the field of combined machining of workpieces, there is a need for an improved combined machining apparatus that can shorten the machining cycle of a workpiece while ensuring or improving machining accuracy, and in addition, can reduce machining costs.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the above-mentioned problems occurring in the prior art. The object of the utility model is to provide an improved combined machining device which can shorten the machining cycle while ensuring and even improving the machining accuracy. In addition, the composite processing equipment can reduce the processing cost of the workpiece.

The composite processing apparatus of the present invention comprises:

the machining device comprises a lathe bed, a machining device and a machining device, wherein a workbench is arranged on the lathe bed and used for bearing a workpiece to be machined, and the workbench comprises a first sliding mechanism capable of translating along a first horizontal direction so as to drive the workbench to translate along the first horizontal direction;

a second sliding mechanism including at least a first ram and a second ram capable of translating relative to the table in a second horizontal direction different from the first horizontal direction;

the machining assembly is arranged on the first ram and can translate along the vertical direction relative to the first ram, and a first machining device is arranged on the machining assembly; and

and the composite processing assembly is arranged on the second ram and can translate along the vertical direction relative to the second ram, the composite processing assembly comprises a laser processing device and a second mechanical processing device, and the composite processing assembly further comprises a composite processing rotating shaft which is arranged to at least enable the laser processing device to rotate.

Through the composite processing equipment with the structure, different machining operations and laser processing operations are integrated on one piece of equipment to be completed, and the position of a workpiece can be kept unchanged all the time in the processing process, so that the workpiece is clamped and positioned only once, the processing precision can be improved, the processing period is shortened, and the processing cost is reduced.

Wherein, the translational motion of the first slide block, the second slide block, the machining assembly and the composite machining assembly can be realized by structures known in the art, such as the cooperation of slide blocks and slide rails.

The first machining device may be, for example, a grinding device or the like, the second machining device may be one or more of a turning device, a milling device, a drilling device or the like, and the laser machining device may be a device for laser engraving, laser marking or the like.

The first horizontal direction and the second horizontal direction may be directions substantially perpendicular to each other.

Preferably, the work table includes a work holder including a work pivot shaft capable of rotating the work while the work holder holds the work.

In one embodiment, the workpiece holder includes a nose cone and a chuck fixedly attached to a workpiece pivot axis such that rotation of the workpiece pivot axis rotates the chuck and the workpiece.

Of course, the table may take other forms, such as a turret-type table, etc., depending on the type of workpiece to be machined in detail.

Preferably, the laser processing device comprises an optical fiber connector and a galvanometer, and the optical fiber is connected to the galvanometer through the optical fiber connector, wherein a suspension buffer sleeve is sleeved and fixedly arranged on the laser processing device, a universal joint is arranged on the suspension buffer sleeve, and the optical fiber is connected into the optical fiber connector through the universal joint.

The universal joint allows the optical fiber therein to be held relatively stationary while the depending buffer sleeve rotates with the laser machining device, thereby reducing or eliminating twisting of the optical fiber.

In one embodiment, the universal joint includes a fixing block and a through-hole ball rotatably received in the fixing block, the through-hole ball having a through-hole formed therein, and the optical fiber is connected to the optical fiber connector through the through-hole of the through-hole ball. Wherein the through hole may have a diameter of 15mm

Preferably, the fixing block comprises two fixing block halves, and/or the through hole sphere comprises two through hole sphere halves. Thus, the assembly of the universal joint can be facilitated.

Preferably, the composite processing assembly further comprises a workpiece positioning/image recognition system, the workpiece positioning/image recognition system being configured to: determining the position of the workpiece, and/or performing inspection of the surface of the workpiece.

Specifically, the workpiece positioning/image recognition system includes an optical camera and a mechanical probe. The mechanical probe descends to contact with the workpiece to find the position of the workpiece, and the optical camera can be matched with the mechanical probe to find the processing starting line of the workpiece, so that the positioning error is reduced. In addition, the optical camera can also be used to detect the presence of defects such as scratches, air holes, etc. on the surface of the processed workpiece.

Preferably, the composite processing rotating shaft comprises a torque motor, a mandrel is inserted into the torque motor, and the mandrel is driven by the torque motor to rotate. The torque motor has the advantages that the reverse gap can be eliminated, the mass of the torque motor is small, and the control flexibility and the control precision are improved. Moreover, the torque motor is also beneficial to enlarging the processing range.

Preferably, an encoder is provided at one end of the spindle for monitoring the rotation angle of the spindle, so that the rotation of the workpiece rotating shaft can be controlled according to the monitored rotation angle.

Drawings

Embodiments of the utility model will become more apparent from the structure illustrated in the drawings, in which:

fig. 1 is a schematic perspective view of a workpiece suitable for machining with the composite machining apparatus of the present invention.

Fig. 2 is a perspective view of the composite working apparatus of the present invention.

Fig. 3 is a front view of the composite processing apparatus shown in fig. 2.

Fig. 4 is a side view of the composite processing apparatus shown in fig. 2.

Fig. 5 is a partial perspective view of a composite processing head in the composite processing apparatus shown in fig. 2.

Fig. 6a is a perspective view of the laser machining device in the composite machining head shown in fig. 5.

Fig. 6b is a cross-sectional view of the laser processing apparatus shown in fig. 6 a.

Fig. 6c is an exploded view of the gimbal on the fiber optic joint of the laser machining apparatus.

Figure 7 is a cross-sectional view of the composite tooling spindle in the composite tooling head.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It is to be understood that the preferred embodiments of the present invention are shown in the drawings only, and are not to be considered limiting of the scope of the utility model. Various obvious modifications, changes and equivalents of the embodiments of the utility model shown in the drawings can be made by those skilled in the art, and all of them are within the scope of the utility model.

Furthermore, it is noted that directional terms used herein such as "upper," "lower," "left," "right," "front," "rear," etc., are used with reference to the orientation shown in the drawings.

First, fig. 1 shows an example of a workpiece suitable for processing with the composite processing apparatus 100 of the present invention, the workpiece 1 being a precision-textured roll having a precision pattern formed on a side peripheral surface thereof.

Fig. 2 is a perspective view of the composite working apparatus 100 of the present invention, in which the overall structure of the composite working apparatus 100 is shown. The composite working apparatus 100 includes a bed 110, and a table 120 is provided on the bed 110. The worktable 120 includes a Y-axis slider 121 capable of translating along a "Y-axis" direction (i.e., a horizontal front-back direction in fig. 2) on a slide rail disposed on the bed 110, thereby forming a linear translation axis (Y-axis) to drive the worktable 120 to translate along the "Y-axis" direction. A workpiece holding assembly is provided on top of the table 120. As more clearly seen in the side view of the composite working apparatus 100 shown in fig. 4, one embodiment of the tool holding assembly comprises an end cone 122 and a chuck 123, the workpiece 1 being held between the end cone 122 and the chuck 123. Further, the chuck 123 may be connected to a workpiece rotation shaft 124 (second rotation shaft), and the workpiece rotation shaft 124 constitutes a rotation axis (D axis), so that the chuck 123 rotates the workpiece 1 together with the workpiece rotation shaft 124.

The table 120 may take other forms in addition to the preferred embodiment disclosed above, for example, the table 120 may be a turret-type table, which may be used to process other types of workpieces.

Returning to fig. 2, an X-axis sliding mechanism in the form of a gantry beam is further provided on the bed 110, and includes at least two columns 131 and an X-axis beam 132 supported on the columns 131, and a slide rail 133 is included on the X-axis beam 132. The slide rail 133 is provided with a first X-axis ram 134 and a second X-axis ram 135. The two X-axis rams 134, 135 are translatable on the X-axis beam 132 along the slide rails 133 relative to the table 120 in the "X-axis" direction (i.e., the horizontal left-right direction in fig. 2), thereby forming a linear translation axis (X-axis). Preferably, the direction of translation of the first and second X-axis rams 134, 135 may be substantially perpendicular to the direction of translation of the table 120.

A grinding assembly 140 and a compound machining assembly 150 are provided on the X-axis slide mechanism, as will be described in detail below. The grinding assembly 140 and the composite machining assembly 150 can be alternately moved to a machining position for machining the workpiece 1 by translating each of the first and second X-axis rams 134,135 in the "X-axis" direction. Next, specific structures of the grinding assembly 140 and the composite working assembly 150 will be described, respectively.

< grinding Assembly >

As shown in fig. 2 and 3, the grinding assembly 140 includes a grinding sled 141 mounted on the first X-axis ram 134, and a grinding spindle head 142 is slidably connected to the grinding sled 141 such that the grinding spindle head 142 is translatable relative to the grinding sled 141 in the up-down direction of fig. 2, thereby constituting a linear translation axis (Z2 axis) for vertical translation of the grinding assembly 140. A grinding wheel 143 is rotatably held by the grinding spindle head 142.

When the workpiece 1 needs to be ground, the grinding assembly 140 is moved to the upper side of the workpiece 1 by the translational movement of the first X-axis ram 134, and then the grinding spindle head 142 is moved downward relative to the grinding slide 141 until the grinding wheel 143 connected to the grinding spindle head 142 contacts the surface to be ground of the workpiece 1. After the grinding process is completed, the grinding spindle head 142 is raised upward, the grinding wheel 143 is lifted together, and then the grinding assembly 140 is moved away from above the workpiece 1 by the translational movement of the first X-axis ram 130.

< composite working Assembly >

The structure of the composite tooling assembly 150 will be described with reference to fig. 2, 4-6. As shown in fig. 2, the combined machining assembly 150 includes a combined machining slide rail 151 mounted on the second X-axis ram 135, and a combined machining slider 152 is slidably attached to the combined machining slide rail 151 such that the combined machining slider 152 can be translated in the up-down direction in fig. 2 with respect to the combined machining slide rail 151, thereby constituting a linear translation axis (Z1 axis) for vertical translation of the combined machining assembly 150. A composite machining head 153 is provided on the composite machining slide 152, the composite machining head 153 comprising a composite machining pivot axis 154. The composite-machining pivot 154 allows the composite-machining head 153 to rotate during alignment and positioning of the workpiece and during laser machining, thereby constituting a pivot axis (B-axis) that allows at least the laser machining device 160 to rotate.

Turning to fig. 5, which shows a partial view of the composite machining head 153, it can be seen that the composite machining head 153 includes a laser machining device 160 and a turning device 170 thereon, such as in one exemplary configuration shown in fig. 5, the laser machining device 160 and the turning device 170 are mounted on the web 155. The composite machining pivot 154 is connected to the connecting plate 155, so that the composite machining head 153, which includes the laser machining device 160 and the turning device 170, is moved in rotation by the connecting plate 155.

As shown more clearly in fig. 5, the turning device 170 includes a turning tool holder 171, on which a turning tool 172 is detachably clamped.

The laser processing apparatus 160 includes an optical fiber connector 161 and a galvanometer 162. The optical fiber 187 is connected to the galvanometer 162 through the optical fiber connector 161, and transmits the laser beam from the light source to the galvanometer 162.

A camera 163 and a mechanical probe 164 (see fig. 4 and 5) are also provided on the laser processing device 160, and constitute a workpiece positioning/image recognition system. During the process of lowering the combined machining slide 152 along the combined machining slide 151, the mechanical probe 164 is lowered along with the combined machining slide and contacts the surface of the workpiece 1, so as to indicate the position of the workpiece 1, especially the vertical position of the workpiece. For example, in the particular case where the workpiece 1 is a roll, the mechanical probe 164 may be used to determine the outer diameter of the roll and the plane in which the roll lies.

The camera 163 is located above the mechanical probe 164, and it is matched with the mechanical probe 164 to find a machining start line of the workpiece 1. The interfitting of the camera 163 and the mechanical probe 164 helps to more accurately determine the workpiece position, reducing errors. In addition, the camera 163 can be used to inspect the surface of the machined workpiece to determine whether there are structural defects such as scratches and air holes on the machined surface. Preferably, the camera 163 is an optical camera.

In a preferred example, the positioning accuracy of the positioning mark points on the workpiece 1 can be up to ± 0.01mm by a workpiece positioning/image recognition system including a camera 163 and a mechanical probe 164. The workpiece positioning/image recognition system is beneficial to reducing manual positioning practice and improving positioning precision, and can meet the requirements of realizing intermittent and secondary processing and the like.

Fig. 6a to 6c show the structure of the laser processing apparatus 160. Fig. 6a shows a perspective view of the laser processing apparatus 160, fig. 6b shows a cross-sectional view of the optical fiber connector 161 of the laser processing apparatus 160, and fig. 6c is an exploded perspective view of the universal joint 181 of the optical fiber connector 161. As shown, the tail of the fiber 187 is coupled to an optical isolator 183, the optical isolator 183 being secured within an adapter 184, the adapter 184 being in communication with the galvanometer 162. A depending bumper sleeve 182 is disposed over the adapter 184, the depending bumper sleeve 182 preferably being of a single barrel construction that is fitted over and secured to the laser machining device 160. At the top of the suspended buffer sleeve 182 a universal joint 181 is provided, via which universal joint 181 an optical fibre 187 is connected into the optical fibre connector 161.

Fig. 6c shows a preferred construction of the universal joint 181. The universal joint 181 includes a fixing block 185 and a through hole ball 186, the fixing block 185 is provided with a circular hole for receiving the through hole ball 186, the through hole ball 186 is provided with a through hole, and in an installed state, the optical fiber 187 passes through the through hole in the through hole ball 186 and extends into the optical fiber connector 161. Preferably, the through-holes in the through-hole sphere 186 may have a diameter of about 15 mm.

In a preferred construction, the mounting block 185 is divided into two halves, as shown, and the through-hole sphere 186 is also divided into two halves. During installation, the two halves of the through hole sphere 186 may be first folded to form a complete sphere and the optical fiber 187 may be inserted through the through hole therein, and then the two halves of the fixing block 185 may be folded to receive the through hole sphere 186 holding the optical fiber 187 therein. Of course, it is within the scope of the present invention that the mounting block 185 and the through hole ball 186 may each be a one-piece member.

By the provision of the universal joint 181, the depending buffer sleeve 182 is able to maintain the perpendicularity of the optical fiber 187 therein, while in the event that the laser machining device 160 is rotated through a large angle, the depending buffer sleeve 182 is also rotated synchronously by the universal joint 181, thereby mitigating the degree of twist to the optical fiber 187. Preferably, the universal joint 181 is configured such that the optical fiber 187 and the adapter 184 in the laser machining device 160 remain relatively stationary as the depending damping sleeve 182 rotates with the laser machining device 160.

It is further preferred that a hose be connected to the front and rear portions of the optical fiber 187 through the through hole ball 186 to further reduce twisting of the optical fiber 187 when the suspension sleeve 182 is rotated. By providing such an optical fiber connection structure, adverse effects on the optical fiber 187 when the laser processing device 160 is rotated can be reduced, and the service life of critical components such as the optical fiber 187 and the adapter 184 can be prolonged.

Returning to fig. 5, as shown therein, laser machining apparatus 160 preferably further includes a blowpipe 165 and a dust collection pipe 166 disposed near galvanometer 162, e.g., below galvanometer 162. During laser machining, such as laser fine texturing, metal fumes or debris are generated. The metal fumes or debris can be carried away by the gas blown out of the blowpipe 165. The dust collection duct 166 is connected to a source of negative pressure (not shown) and draws the airflow carrying the metal fumes or debris to a dust removal device by suction, and discharges the filtered airflow to the surrounding environment. Therefore, the smoke-dust-free emission in the processing process can be ensured, and the environmental protection grade is improved.

Figure 7 shows a cross-sectional view of a composite machined rotating shaft 154 in a preferred configuration. The composite processing rotary shaft 154 includes a motor 191, and a spindle 192 is inserted into the motor 191. An encoder 193 is provided on one end of the spindle 192. Operation of motor 191 causes spindle 192 to rotate, which in turn causes compound head 153 to rotate. The encoder 193 monitors the rotation angle of the spindle 192, and a controller (not shown) controls the rotational accuracy of the workpiece spindle 124 according to the detected rotation angle.

The motor 191 is preferably a torque motor. The use of the torque motor has an advantage in that the overall structure of the composite processing head 153 can be made more compact and the dynamic performance is better. Moreover, the torque motor may be directly coupled to the connection plate 155, which may avoid backlash and wear associated with mechanical transmissions. A direct measurement system is realized by the encoder 193 directly connected to the spindle 192, thereby obtaining a high revolution accuracy. Furthermore, direct connection control, reverse clearance generated by a transmission chain and power loss can be realized through the torque motor. Therefore, the torque motor has the advantages of low rotating speed, large torque, strong overload capacity, quick response, small torque fluctuation and the like. In the present invention, by using a torque motor, a machining range of at least ± 135 ° can be achieved.

In the composite working assembly 150 disclosed above, the laser working device 160 may be a laser engraving device, a laser marking device, or the like. In addition, the turning device 170 in the composite machining assembly 150 may be replaced by other machining devices, such as a milling device, a drilling device, and the like.

< method of operation >

The operation method of the composite working apparatus 100 of the present invention will be specifically described below.

After rough machining of the workpiece 1, for example, a roll, the workpiece 1 is loaded on the table 120. For example, in the particular embodiment shown in the figures, a cylindrical workpiece 1 is clamped between the tip cone 122 and the chuck 123. The compound machining group 150 is moved over the workpiece 1 by translation of the second X-axis ram 135 and the compound machining slide 152 is lowered along the compound machining slide 151, thereby lowering the mechanical probe 164 until the mechanical probe 164 contacts the surface of the workpiece 1, thereby finding the position of the workpiece 1. After positioning is complete, the compound machining slide 152 moves upward, causing the mechanical probe 164 to lift, awaiting instructions to continue machining.

After, for example, an operator commands a turning operation, the combined machining slide 152 is lowered into position as a result of the previous detection of the position of the workpiece 1 by the mechanical probe 164 and is brought into rotational engagement with the combined machining pivot 154 so that the turning tool 172 is brought into contact with the surface to be machined of the workpiece 1. The workpiece rotating shaft 124 drives the workpiece 1 to rotate at a high speed, and the workpiece 1 is subjected to finish turning. After the finish turning process is completed, the composite-machining slider 152 drives the composite-machining head 153 to ascend to a safe position, the second X-axis ram 135 translates away from the workpiece 1, and the first X-axis ram 134 translates to translate the grinding assembly 140 above the workpiece 1. Next, the grinding spindle head 142 of the grinding unit 140 moves downward to bring the grinding wheel 143 to a desired machining position, and the grinding wheel 143 grinds the surface of the workpiece 1.

After the machining process, such as turning, grinding, etc., is complete, the grinding spindle head 142 moves upward, raising the grinding wheel 143 to a safe position and translating the first X-axis ram 134 away from above the workpiece 1. Next, the mechanical probe 164 is moved above the workpiece 1 again by a combination of the horizontal movement of the second X-axis ram 135, the vertical movement of the combined machining slide 152, and the rotation of the combined machining rotating shaft 154, and whether the diameter of the machined workpiece 1 meets the requirement is detected by the mechanical probe 164, and whether defects such as scratches and air holes exist on the surface of the machined workpiece 1 is detected by the camera 163. After the machining is determined to be acceptable, the composite machining head 153 is raised to a height required for laser machining by the upward movement of the composite machining slider 152, and then the composite machining head 153 including the laser machining device 160 is moved to a machining position. Then, the laser processing apparatus 160 performs laser processing and laser correction of the precise texture on the workpiece 1. During the laser machining and laser correction, the laser machining covers a large part of the surface area of the workpiece 1, for example at least 75% of the surface area, by the revolution of the combined machining revolution axis 154. Therefore, it is advantageous to machine a complicated texture on the workpiece 1 which is not perpendicular to the axial direction thereof. In addition, it is also possible to rotate the work 1 by the work revolving shaft 124, thereby achieving precision-textured processing over the entire circumferential surface of the work 1.

It can be seen that in the whole processing process, the workpiece 1 is only required to be clamped once, and in the whole processing process, the position of the workpiece 1 is always kept unchanged, so that the step of repeatedly positioning the workpiece like the processing equipment in the prior art is not needed, higher processing consistency is also kept, the processing period is greatly shortened, and the processing precision is improved. The workpiece is positioned only once. In addition, in the process of positioning the workpiece 1, the combined machining revolving shaft 154 is also rotatable, so that the camera 163 can accurately find the position of the workpiece 1 through a plurality of positioning points, and the positioning accuracy of the workpiece 1 is improved.

< advantageous effects >

The composite processing apparatus 100 of the present invention can produce the following positive technical effects:

firstly, the composite processing equipment 100 combines machining processes such as turning and grinding and laser texture processing processes on the same equipment, and only needs to clamp, align and position a workpiece once in the processing process, so that the processing precision is improved, the processing period is shortened, and the processing cost is reduced. By providing the composite processing pivot 154 on the composite processing head 153 including the laser processing device 160, the laser processing can cover most of the surface of the workpiece, and the complex texture which is not perpendicular to the axial direction can be processed. And the rotation of the composite processing rotating shaft 154 further provides a plurality of positioning points for aligning and positioning the workpiece, further improving the processing precision.

In addition, it is preferable to use a torque motor in the composite processing rotary shaft 154, which can be directly connected to the connection plate 155, thereby directly driving the composite processing head 153, and eliminating backlash and improving the driving accuracy. Moreover, the torque motor has compact structure and small mass, so that the processing control has higher flexibility and precision, for example, the processing range of at least +/-135 degrees can be realized, thereby allowing the composite processing equipment 100 of the utility model to be suitable for processing a wider range of workpiece types and meeting the requirements of most industrial production.

Additionally, the use of the universal joint 181 to receive the optical fiber in the fiber joint 161 reduces or even eliminates the adverse effects on the optical fiber caused by the rotation of the composite processing head 153, thereby extending the useful life of critical components such as the optical fiber.

Claims (10)

1. A composite processing apparatus, characterized in that the composite processing apparatus comprises:

the machining device comprises a lathe bed, a machining device and a machining device, wherein a workbench is arranged on the lathe bed and used for bearing a workpiece to be machined, and the workbench comprises a first sliding mechanism capable of translating along a first horizontal direction so as to drive the workbench to translate along the first horizontal direction;

a second slide mechanism including at least a first ram and a second ram translatable relative to the table along a second horizontal direction different from the first horizontal direction;

a machining assembly disposed on the first ram and translatable relative thereto in a vertical direction, a first machining device disposed on the machining assembly; and

a composite machining assembly disposed on the second ram and translatable relative thereto in a vertical direction, the composite machining assembly including a laser machining device and a second machining device, the composite machining assembly further including a composite machining pivot axis disposed to at least enable rotation of the laser machining device.

2. The compound processing apparatus as defined in claim 1, wherein said work table comprises a work holder, said work holder comprising a work pivot axis, said work pivot axis being capable of rotating said work piece while said work holder is holding said work piece.

3. The composite processing apparatus as defined in claim 2, wherein said workpiece holder comprises a nose cone and a chuck, said chuck being fixedly connected to said workpiece rotation axis so that said chuck and said workpiece can be rotated by rotation of said workpiece rotation axis.

4. The composite processing apparatus as claimed in claim 1, wherein the laser processing device includes an optical fiber connector through which an optical fiber is connected to the galvanometer, and a galvanometer, wherein a suspension buffer sleeve is sleeved and fixedly provided on the laser processing device, a universal joint is provided on the suspension buffer sleeve, and the optical fiber is connected to the optical fiber connector via the universal joint.

5. The composite processing apparatus as claimed in claim 4, wherein the universal joint includes a fixing block and a through-hole sphere rotatably received in the fixing block, the through-hole sphere having a through-hole formed therein, the optical fiber being connected to the optical fiber connector through the through-hole of the through-hole sphere.

6. The composite processing apparatus as claimed in claim 5, wherein the fixing block includes two fixing block halves, and/or the through-hole ball includes two through-hole ball halves.

7. The compound processing apparatus of claim 1, wherein the compound processing assembly further comprises a workpiece positioning/image recognition system, the workpiece positioning/image recognition system being configured to: determining the position of the workpiece, and/or performing inspection of the surface of the workpiece.

8. The compound processing apparatus as defined in claim 7 wherein the workpiece positioning/image recognition system includes an optical camera and a mechanical probe.

9. The compound processing apparatus as defined in claim 1, wherein the compound processing rotating shaft comprises a torque motor, a spindle inserted in the torque motor, the spindle being rotated by the torque motor.

10. A combined machining device according to claim 9, characterised in that an encoder is provided at one end of the mandrel for monitoring the angle of rotation of the mandrel.

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