Milling-turning composite exchange workbench and working system

Abstract

The present invention discloses a milling and turning composite exchange workbench and a working system, which relate to the field of milling and turning processing. The milling and turning composite exchange workbench includes two workbench surfaces, a workbench support seat, a workbench base, a workbench support frame, a rotating arm and a lifting device. A positioning cone cap and a pull stud are provided at the bottom of each workbench surface, and a positioning cone seat for positioning and fixing with the positioning cone cap and the pull stud is provided at the top of the workbench support seat; a sliding device is provided on the outside of the workbench base; a slide rail matching with the sliding device is provided on the workbench support frame, and the lifting device is arranged at one end of the slide rail; the rotating arm is installed at the top of the lifting device. The rotating arm includes a servo motor, a transmission mechanism, a rotation center and two clamping mechanisms. The servo motor is used to drive the rotating arm to rotate around the rotation center through the transmission mechanism. The two clamping mechanisms are respectively arranged on both sides of the rotating arm, and the rotation center is fixed to the lifting device. The present invention can shorten the downtime of the machining center and improve the machining efficiency.

Description

Technical Field

[0001] The present invention relates to the field of milling and turning processing, and particularly relates to a milling and turning composite exchange workbench and a working system. Background Art

[0002] The high-end equipment manufacturing industry refers to the high-end field of the equipment manufacturing industry. "High-end" is mainly manifested in three aspects: First, it has a high technological content, which is characterized by knowledge and technology-intensive, reflecting the inheritance of high-precision and sophisticated technologies in multiple disciplines and fields; Second, it is at the high end of the value chain and has the characteristics of high added value; Third, it occupies the core position in the industrial chain, and its development level determines the overall competitiveness of the industrial chain.

[0003] Compound machining has always been the development direction of machining. The workbench is an essential functional component of a machining center. By clamping once, multiple processes can be completed, improving machining accuracy and efficiency. Compound machining has the characteristics of high technological content, knowledge, and technology-intensive.

[0004] In compound machining, the milling and turning composite workbench is mainly for milling. Through the high rotational speed characteristics of the built-in torque motor, turning functions can be achieved and it is usually configured in a machining center.

[0005] The existing milling and turning composite workbenches have defects such as low machining efficiency, low intelligence level, and being prone to accidents. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the defects of the existing milling and turning composite workbenches in the prior art, such as low machining efficiency, low intelligence level, and being prone to accidents, and to provide a milling and turning composite exchange workbench and a working system that can shorten the downtime of the machining center and improve machining efficiency.

[0007] The present invention solves the above technical problem through the following technical solutions:

[0008] A milling and turning composite exchange workbench, the milling and turning composite exchange workbench includes two work surfaces, a workbench support seat, a workbench base, a workbench support frame, a rotating arm, and a lifting device.

[0009] A positioning cone cap and a pull stud are provided at the bottom of each work surface, and a positioning cone seat for positioning and fixing with the positioning cone cap and the pull stud is provided at the top of the workbench support seat.

[0010] A connecting piece, a torque motor, a braking mechanism, and an encoder are provided inside the workbench base. The torque motor drives the workbench support seat to rotate through the connecting piece, and a sliding device is provided outside the workbench base.

[0011] The workbench support frame is provided with a slide rail matching the sliding device, and the lifting device is arranged at one end of the slide rail;

[0012] The rotating arm is installed at the top of the lifting device. The rotating arm includes a servo motor, a transmission mechanism, a rotation center, and two clamping mechanisms. The servo motor is used to drive the rotating arm to rotate around the rotation center through the transmission mechanism. The two clamping mechanisms are respectively arranged on both sides of the rotating arm, and the rotation center is fixed to the lifting device;

[0013] A clamping groove matching the clamping mechanism is arranged on the side of each workbench surface;

[0014] When the lifting device is in the low position state, the clamping mechanism is lower than the clamping groove;

[0015] When the workbench base is in the exchange state, the clamping mechanism is aligned with the clamping groove;

[0016] When the lifting device rises from the low position to the high position state, the clamping mechanism clamps the clamping groove and drives the workbench surface to separate from the workbench support seat.

[0017] Preferably, the servo motor is arranged at one end of the rotating arm. The servo motor is arranged on one side of the installation plane. The axis of the rotation center is in the installation plane. The installation plane is parallel to the length direction of the rotating arm. The milling-turning composite exchange workbench further includes an isolation door. An installation groove is arranged at the bottom of the isolation door. The isolation door is installed on the installation plane and clamps both ends of the rotating arm through the installation groove. Installation protrusions for fixing the isolation door are arranged on both end faces of the rotating arm. One clamping mechanism coincides with the position of the other clamping mechanism after rotating 180 degrees along the axis of the rotation center. The transmission mechanism is arranged inside the housing of the rotating arm.

[0018] Preferably, the transmission mechanism includes two belt pulleys, a conveyor belt, a reducer, and a first gear. The rotor of the servo motor is connected to the first belt pulley. The first belt pulley is connected to the second belt pulley through the conveyor belt. The second belt pulley is connected to the input end of the reducer. The output end of the reducer is connected to the first gear. The first gear meshes with the second gear of the rotation center. The rotating arm includes a through hole matching the rotation center. The inner wall of the through hole is connected to the side surface of the rotation center through a bearing.

[0019] The isolation door includes a first door body, a second door body, and a rotating rod. The mounting groove on the first door body is fixed to the rotating arm. A receiving groove is provided below the second door body, and the receiving groove accommodates the top of the first door body. When the lifting device rises from a low position to a high position, the first door body moves within the receiving groove. The bottom of the rotating rod is fixed to the rotation center and penetrates through the first door body and the second door body. When the servo motor drives the rotating arm to rotate around the rotation center, the rotating arm drives the isolation door to rotate around the rotating rod.

[0020] Preferably, the sliding device includes a guide rail slider and a ball screw nut. The guide rail slider and the ball screw nut are provided at the bottom of the workbench base, and the workbench base moves on the slide rail by means of the guide rail slider and the ball screw nut.

[0021] Preferably, two connecting blocks are provided outside the clamping groove. The connecting blocks protrude from the side wall of the clamping groove. The clamping mechanism includes a clamping part and a groove. The grooves are provided on both sides of the clamping part. When the clamping mechanism is clamped with the clamping groove, the clamping part is embedded in the clamping groove, and the connecting block is embedded in the groove.

[0022] Preferably, a plurality of balance blocks are provided at the top edge of the workbench support seat. The balance blocks are used to adjust the dynamic balance when the workbench support seat rotates together with the workbench surface.

[0023] Preferably, the lifting device includes a hydraulic cylinder and a lifting body. The lifting body is provided on the top of the hydraulic cylinder, and the hydraulic cylinder is fixed to one end of the slide rail.

[0024] Preferably, the connecting member includes a rotating shaft fixed to the workbench support seat. A brake pad is fixed to the outer surface of the rotating shaft. The braking mechanism is a self-locking braking mechanism. The self-locking braking mechanism includes an annular brake pressing cover, a brake cylinder body, and a brake piston.

[0025] The outer end surface of the brake cylinder body is fixed to the brake pressing cover. The inner end surface of the brake cylinder body is used to be fixed to the workbench base. A fixing piece is clamped between the brake cylinder body and the brake pressing cover. A gap for accommodating the brake pad is provided on one side of the fixing piece. The other side of the fixing piece is the brake cylinder body and the brake piston provided in the brake cylinder body. The inner surface of the brake cylinder body includes a cylinder protrusion.

[0026] The brake piston includes a piston cover, a piston body, and a piston flange provided on the outer surface of the piston body. The piston cover is fixed to one end of the piston body, and the piston flange is provided at the other end of the piston body. The outer end face of the piston flange is adjacent to the fixing piece. A plurality of central guide pins and elastic members sleeved on the central guide pins are provided inside the piston flange. A receiving counterbore with the same number as the central guide pins is provided on the outer end face of the cylinder body projection. The brake piston is positioned with the brake cylinder body through the central guide pins;

[0027] A first hydraulic chamber is formed between the outer end face of the cylinder body projection and the inner end face of the piston flange, and a second hydraulic chamber is formed between the inner end face of the cylinder body projection and the piston cover. A first oil injection hole connecting to the first hydraulic chamber and a second oil injection hole connecting to the second hydraulic chamber are provided on the outer surface of the brake cylinder body;

[0028] In the state without hydraulic pressure, the elastic member exerts an outward thrust on the brake piston so that the inner end face of the brake pressure cover, the brake pads, the fixing piece, and the outer end face of the piston flange are mutually extruded;

[0029] After injecting oil through the first oil injection hole, the pressure in the first hydraulic chamber exerts an outward thrust on the brake piston;

[0030] After injecting oil through the second oil injection hole, the pressure in the second hydraulic chamber exerts an inward thrust on the brake piston so that the inner end face of the brake pressure cover, the brake pads, and the fixing piece are mutually separated.

[0031] Preferably, a lidar is provided on the isolation door, and the scanning direction of the lidar intersects with the axis of the workbench support when the workbench base is in the exchange state.

[0032] When the lifting device is in the low position state, the lidar is higher than the workbench surface and scans the workpiece when the workbench surface rotates to obtain workpiece point cloud data. The lidar is used to transmit the workpiece point cloud data to a processing terminal; the processing terminal is used to generate model data of the workpiece according to the workpiece point cloud data, and place the model data coincidentally with the design model of the workpiece according to the feature points on the model data, and judge whether the difference amount after the coincidence of the model data and the design model is greater than a preset value. If so, the difference amount is prompted on the output module;

[0033] The lidar is also used to scan the workbench surface to obtain tabletop point cloud data; the processing terminal is used to obtain the position of the workbench surface according to the tabletop point cloud data, and control the lifting of the lifting device according to the position of the workbench;

[0034] The lidar is also used to scan the materials on the workbench when the workbench rotates to obtain the material point cloud data; the processing terminal is used to judge whether the centroid of the material point cloud data is located on the center line of the tabletop point cloud data according to the material point cloud data and the tabletop point cloud data, and if so, control the milling-turning composite exchange workbench to process the material.

[0035] Preferably, the lidar includes a transmitter, two receivers and a reflector. The transmitter and the first receiver are arranged above the workbench support seat. The emission direction of the transmitter and the reception direction of the first receiver are on the vertical line perpendicular to the horizontal plane. The laser emitted by the transmitter is reflected by the reflector and then received by the second receiver along the horizontal plane where the workbench is located.

[0036] The transmitter and the first receiver are used to obtain the workpiece point cloud data and send the workpiece point cloud data to the processing terminal.

[0037] The processing terminal uses the workpiece point cloud data to obtain the workpiece three-dimensional model, and the processing terminal obtains the workpiece machining accuracy according to the workpiece three-dimensional model and the workpiece design model.

[0038] The transmitter and the second receiver are used to obtain the tabletop point cloud data when the workbench rotates and send the tabletop point cloud data to the processing terminal.

[0039] The processing terminal is also used to obtain the three-dimensional models of the workbench at at least two moments according to the tabletop point cloud data.

[0040] The processing terminal is also used to obtain the dynamic balance quality when the table support seat and the workbench rotate together according to the coincidence degree of all the workbench three-dimensional models.

[0041] This application also provides a working system, and the working system includes the milling-turning composite exchange workbench as described above.

[0042] On the basis of conforming to the common knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain various preferred examples of the present invention.

[0043] The positive and progressive effects of the present invention are as follows:

[0044] The milling-turning composite exchange workbench and the working system of the present invention can shorten the downtime of the machining center and improve the machining efficiency. Further, the workbench of this application has a high degree of intelligence. The equipment can obtain the machining situation of the parts, improve the machining quality, and at the same time has a braking device that can improve the safety of the equipment during machining and lock itself in time in case of safety problems. Brief Description of the Drawings

[0045] Figure 1 It is a schematic structural diagram of the milling-turning composite exchange workbench according to Embodiment 1 of the present invention.

[0046] Figure 2 Another structural schematic diagram of the milling-turning composite exchange workbench according to Embodiment 1 of the present invention.

[0047] Figure 3 Another structural schematic diagram of the milling-turning composite exchange workbench according to Embodiment 1 of the present invention.

[0048] Figure 4 Another structural schematic diagram of the milling-turning composite exchange workbench according to Embodiment 1 of the present invention.

[0049] Figure 5 Structural schematic diagram of the workbench surface according to Embodiment 1 of the present invention.

[0050] Figure 6 Another structural schematic diagram of the workbench surface according to Embodiment 1 of the present invention.

[0051] Figure 7 Cross-sectional schematic diagram of the rotating arm according to Embodiment 1 of the present invention.

[0052] Figure 8 Structural schematic diagram of the rotating arm according to Embodiment 1 of the present invention.

[0053] Figure 9 Structural schematic diagram of the braking mechanism according to Embodiment 1 of the present invention.

[0054] Figure 10 Structural schematic diagram of the shielding door according to Embodiment 1 of the present invention. Detailed implementation manners

[0055] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the described embodiments.

[0056] Embodiment 1

[0057] Refer to Figures 1 to 9 , this embodiment provides a milling-turning composite exchange work system, and the work system includes a milling-turning composite exchange workbench.

[0058] The milling-turning composite exchange workbench includes two workbench surfaces 71, a workbench support base 72, a workbench base 73, a workbench support frame 74, a rotating arm 75, and a lifting device 76.

[0059] At the bottom of each workbench surface 71, there are a positioning cone cap 711 and a pull stud 712, and at the top of the workbench support base 72, there is a positioning cone seat 721 for positioning and fixing with the positioning cone cap and the pull stud.

[0060] The workbench base 73 is provided with a connecting piece, a torque motor, a braking mechanism and an encoder inside. The torque motor drives the workbench support seat to rotate through the connecting piece, and a sliding device is arranged outside the workbench base 73.

[0061] A slide rail 741 matching the sliding device is arranged on the workbench support frame 74, and the lifting device is arranged at one end of the slide rail.

[0062] The rotating arm 75 is installed at the top of the lifting device 76. The rotating arm includes a servo motor 751, a transmission mechanism, a rotation center 752 and two clamping mechanisms 753.

[0063] The servo motor is used to drive the rotating arm 75 to rotate around the rotation center 752 through the transmission mechanism. The two clamping mechanisms are respectively arranged on both sides of the rotating arm, and the rotation center is fixed to the lifting device 76.

[0064] A clamping groove 713 matching the clamping mechanism is arranged on the side surface of each workbench surface 71;

[0065] When the lifting device is in the low position state, the clamping mechanism is lower than the clamping groove;

[0066] When the workbench base is in the exchange state, the clamping mechanism and the clamping groove are aligned in the vertical direction;

[0067] When the lifting device rises from the low position to the high position state, the clamping mechanism clamps the clamping groove and drives the workbench surface to separate from the workbench support seat.

[0068] The working process of this embodiment is as follows:

[0069] Materials are fixed on the workbench surface, and the workbench surface and the workbench support seat are fixed through positioning cone caps, pull studs and positioning cone seats.

[0070] The workbench base drives the workbench support seat to enter the processing area along the slide rail, and the workbench surface and the workbench support seat rotate for processing. At this time, materials are installed on another workbench surface on the rotating arm.

[0071] After the workbench surface in the processing area is processed, the workbench base drives the workbench support seat to approach the lifting device along the slide rail.

[0072] At this time, the rotating arm of the lifting device is lower than the processed workbench surface. After the workbench surface arrives, the lifting device rises and separates the workbench surface from the workbench support seat through the cooperation of the clamping groove and the clamping mechanism.

[0073] After separation, the rotating arm rotates to align the workbench surface with the installed materials with the positioning cone seat on the workbench support seat.

[0074] After the lifting device descends, the workbench surface is installed on the workbench support seat, and at the same time, the clamping groove is separated from the clamping mechanism.

[0075] See Figure 6 , the servo motor is arranged at one end of the rotating arm, the servo motor is arranged on one side of the installation plane 754, the axis of the rotation center is in the installation plane, the installation plane is parallel to the length direction of the rotating arm, the milling and turning composite exchange workbench further includes an isolation door, a mounting groove is provided at the bottom of the isolation door, the isolation door is mounted on the installation plane and clamps both ends of the rotating arm through the mounting groove, mounting protrusions 755 for fixing the isolation door are provided on both end faces of the rotating arm, and one clamping mechanism coincides with the position of the other clamping mechanism after rotating 180 degrees along the axis of the rotation center, and the transmission mechanism is arranged inside the housing of the rotating arm.

[0076] The servo motor is protected from water by a sheet metal shield. The sheet metal shield covers and fixes the servo motor on the isolation door, and a mounting part for fixing with the sheet metal shield is provided at the bottom of the servo motor.

[0077] Specifically, the transmission mechanism 77 includes two belt pulleys 771, a conveyor belt 772, a reducer 773, and a first gear 774.

[0078] The rotor of the servo motor is connected to the first belt pulley, the first belt pulley is connected to the second belt pulley through the conveyor belt, the second belt pulley is connected to the input end of the reducer, and the output end of the reducer is connected to the first gear.

[0079] The first gear meshes with the second gear 775 of the rotation center, and the rotating arm includes a through hole matching the rotation center.

[0080] The inner wall of the through hole is connected to the side surface of the rotation center through a bearing 776.

[0081] See Figure 10 , the isolation door 81 includes a first door body 812, a second door body 811, and a rotating rod 813. The mounting groove 814 on the first door body is fixed to the rotating arm. A receiving groove is provided below the second door body, and the top of the first door body is received in the receiving groove. When the lifting device rises from the low position to the high position, the first door body moves in the receiving groove. The bottom of the rotating rod is fixed to the rotation center and penetrates through the first door body and the second door body. When the servo motor drives the rotating arm to rotate around the rotation center, the rotating arm drives the isolation door to rotate around the rotating rod.

[0082] The sliding device includes a guide rail slider 731 and a ball screw nut 732. The guide rail slider and the ball screw nut are arranged at the bottom of the workbench base, and the workbench base moves on the slide rail by means of the guide rail slider and the ball screw nut.

[0083] Two connecting blocks 714 are arranged outside the clamping groove 713, and the connecting blocks protrude from the side wall of the clamping groove.

[0084] The clamping mechanism includes a clamping part and a groove. The groove is arranged on both sides of the clamping part. When the clamping mechanism is clamped with the clamping groove, the clamping part is embedded in the clamping groove, and the connecting block is embedded in the groove.

[0085] A plurality of balance blocks 722 are arranged at the top edge of the workbench support base 72, and the balance blocks are used to adjust the dynamic balance when the workbench support base and the workbench surface rotate together.

[0086] The lifting device 76 includes a hydraulic cylinder 761 and a lifting main body 762. The lifting main body is arranged at the top of the hydraulic cylinder, and the hydraulic cylinder is fixed to one end of the slide rail.

[0087] See Figure 9 , the connecting part includes a rotating shaft fixed to the workbench support base. A brake pad is fixed on the outer surface of the rotating shaft. The braking mechanism is a self-locking braking mechanism. The self-locking braking mechanism includes an annular brake pressure cover, a brake cylinder body and a brake piston.

[0088] The self-locking braking mechanism includes an annular brake pressure cover 11, a brake cylinder body 21 and a brake piston 31.

[0089] The outer end face 211 of the brake cylinder body 21 is fixed to the brake pressure cover 11, and the inner end face 212 of the brake cylinder body 21 is used to be fixed to the bottom of the workbench base.

[0090] A fixing piece 41 is clamped between the brake cylinder body 21 and the brake pressure cover 11, and a gap for accommodating the brake pad 51 is arranged on one side of the fixing piece 41.

[0091] The other side of the fixing piece 41 is the brake cylinder body 21 and the brake piston 31 arranged in the brake cylinder body 21. The inner surface of the brake cylinder body 21 includes a cylinder protrusion 213.

[0092] The brake piston 31 includes a piston cover 311, a piston main body 312 and a piston convex edge 313 arranged on the outer surface of the piston main body.

[0093] The piston cover 311 is fixed to one end of the piston main body 312, and the piston convex edge is arranged at the other end of the piston main body.

[0094] The outer end face 317 of the piston convex edge 313 is adjacent to the fixed piece 41, and a plurality of central guide pins 314 and elastic members 315 sleeved on the central guide pins 314 are arranged inside the piston convex edge 313.

[0095] On the outer end face of the cylinder block protrusion 213, there are accommodation counter bores 215 with the same number as the central guide pins 314, and the brake piston is positioned with respect to the brake cylinder block through the central guide pins.

[0096] A first hydraulic chamber 61 is formed between the outer end face of the cylinder block protrusion 213 and the inner end face of the piston convex edge 313, and a second hydraulic chamber 62 is formed between the inner end face of the cylinder block protrusion 213 and the outer end face of the piston cover 311.

[0097] On the outer surface of the brake cylinder block 21, there is a first oil injection hole A connecting to the first hydraulic chamber and a second oil injection hole B connecting to the second hydraulic chamber.

[0098] In the state without hydraulic pressure, the elastic member exerts an outward thrust on the brake piston so that the inner end face 111 of the brake pressure cover, the brake pads 51, the fixed piece 41, and the outer end face 317 of the piston convex edge are mutually extruded.

[0099] After injecting oil into the first oil injection hole, the pressure in the first hydraulic chamber 61 exerts an outward thrust on the brake piston.

[0100] After injecting oil into the second oil injection hole, the pressure in the second hydraulic chamber 62 exerts an inward thrust on the brake piston so that the inner end face 111 of the brake pressure cover, the brake pads 51, the fixed piece 41, and the outer end face 317 of the piston convex edge are mutually separated.

[0101] For clearly describing the structure of the present application, in this embodiment, "inner" in the outer end face and the inner end face refers to the direction from the brake pressure cover to the brake cylinder block, and "outer" in the outer end face and the inner end face refers to the direction from the brake cylinder block to the brake pressure cover.

[0102] Further, a lidar is provided on the isolation door, and the scanning direction of the lidar intersects with the axis of the workbench support when the workbench base is in the exchange state.

[0103] When the lifting device is in the low position state, the lidar is higher than the workbench surface and scans the workpiece when the workbench surface rotates to obtain workpiece point cloud data. The lidar is used to transmit the workpiece point cloud data to a processing terminal; the processing terminal is used to generate model data of the workpiece according to the workpiece point cloud data, and place the model data coincidentally with the design model of the workpiece according to the feature points on the model data, and judge whether the difference amount after the model data coincides with the design model is greater than a preset value. If so, the difference amount is prompted on the output module.

[0104] The lidar is also used to scan the workbench surface to obtain the surface point cloud data; the processing terminal is used to obtain the position of the workbench surface according to the surface point cloud data, and control the lifting of the lifting device according to the position of the workbench.

[0105] The lidar is also used to scan the materials on the workbench surface to obtain the material point cloud data when the workbench surface rotates; the processing terminal is used to judge whether the center of gravity of the material point cloud data is located on the center line of the surface point cloud data according to the material point cloud data and the surface point cloud data, and if so, control the milling and turning composite exchange workbench to process the materials.

[0106] Using the above-mentioned milling and turning composite exchange workbench, this embodiment also provides a workpiece processing method, including:

[0107] When the lifting device is in the low position state, the lidar is higher than the workbench surface and scans the workpiece to obtain the workpiece point cloud data when the workbench surface rotates, and the lidar transmits the workpiece point cloud data to a processing terminal.

[0108] The processing terminal generates the model data of the workpiece according to the workpiece point cloud data, and overlays and places the model data with the design model of the workpiece according to the feature points on the model data, and judges whether the difference amount after the model data coincides with the design model is greater than a preset value, and if so, prompts the difference amount on the output module.

[0109] The lidar scans the workbench surface to obtain the surface point cloud data.

[0110] The processing terminal obtains the position of the workbench surface according to the surface point cloud data, and controls the lifting of the lifting device according to the position of the workbench.

[0111] The lidar scans the materials on the workbench surface to obtain the material point cloud data when the workbench surface rotates.

[0112] The processing terminal judges whether the center of gravity of the material point cloud data is located on the center line of the surface point cloud data according to the material point cloud data and the surface point cloud data, and if so, controls the milling and turning composite exchange workbench to process the materials.

[0113] Embodiment 2

[0114] This embodiment is basically the same as Embodiment 1, the difference is only that:

[0115] The lidar includes a transmitter, two receivers, and a reflector. The transmitter and the first receiver are disposed above the workbench support seat. The emission direction of the transmitter and the reception direction of the first receiver are on the vertical line perpendicular to the horizontal plane. The laser emitted by the transmitter is reflected by the reflector and then received by the second receiver along the horizontal plane where the workbench surface is located.

[0116] The transmitter and the first receiver are used to obtain workpiece point cloud data and send the workpiece point cloud data to the processing terminal.

[0117] The processing terminal uses the workpiece point cloud data to obtain a three-dimensional model of the workpiece, and the processing terminal obtains the machining accuracy of the workpiece according to the three-dimensional model of the workpiece and the designed model of the workpiece.

[0118] The transmitter and the second receiver are used to obtain the workbench point cloud data when the workbench surface rotates and send the workbench point cloud data to the processing terminal.

[0119] The processing terminal is further used to obtain three-dimensional models of the workbench surface at at least two moments according to the workbench point cloud data.

[0120] The processing terminal is further used to obtain the dynamic balance mass when the table support seat and the workbench surface rotate together according to the coincidence degree of all the three-dimensional models of the workbench surface.

[0121] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that these are only examples. The protection scope of the present invention is defined by the appended claims. Without departing from the principle and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A milling-turning composite exchange workbench, characterized in that, The milling-turning composite exchange table includes two table surfaces, a table support base, a table base, a table support frame, a rotating arm, and a lifting device. At the bottom of each table surface, there are positioning cone caps and pull studs, and at the top of the table support base, there is a positioning cone seat for positioning and fixing with the positioning cone caps and pull studs. Inside the table base, there are connecting parts, a torque motor, and a braking mechanism. The torque motor drives the table support base to rotate through the connecting parts, and a sliding device is arranged on the outside of the table base. On the table support frame, there is a slide rail matching the sliding device, and the lifting device is arranged at one end of the slide rail. The rotating arm is installed at the top of the lifting device. The rotating arm includes a servo motor, a transmission mechanism, a rotation center, and two clamping mechanisms. The servo motor is used to drive the rotating arm to rotate around the rotation center through the transmission mechanism. The two clamping mechanisms are respectively arranged on both sides of the rotating arm, and the rotation center is fixed to the lifting device. On the side of each table surface, there is a clamping groove matching the clamping mechanism. When the lifting device is in the low position state, the clamping mechanism is lower than the clamping groove. When the table base is in the exchange state, the clamping mechanism is aligned with the clamping groove. When the lifting device rises from the low position to the high position state, the clamping mechanism clamps the clamping groove and drives the table surface to separate from the table support base. The servo motor is arranged at one end of the rotating arm. The servo motor is arranged on one side of the installation plane. The axis of the rotation center is in the installation plane. The installation plane is parallel to the length direction of the rotating arm. The milling-turning composite exchange table further includes an isolation door. At the bottom of the isolation door, there is an installation groove. The isolation door is installed on the installation plane and clamps the two ends of the rotating arm through the installation groove. On the two end faces of the rotating arm, there are installation protrusions for fixing the isolation door. One of the clamping mechanisms coincides with the position of the other clamping mechanism after rotating 180 degrees along the axis of the rotation center. The transmission mechanism is arranged inside the housing of the rotating arm. The transmission mechanism includes two belt pulleys, a conveyor belt, a reducer, and a first gear. The rotor of the servo motor is connected to the first belt pulley. The first belt pulley is connected to the second belt pulley through the conveyor belt. The second belt pulley is connected to the input end of the reducer. The output end of the reducer is connected to the first gear. The first gear meshes with the second gear of the rotation center. The rotating arm includes a through hole matching the rotation center. The inner wall of the through hole is connected to the side surface of the rotation center through a bearing. On the isolation door, there is a lidar. The scanning direction of the lidar intersects with the axis of the table support base when the table base is in the exchange state. When the lifting device is in the low position state, the lidar is higher than the workbench surface and scans the workpiece when the workbench surface rotates to obtain workpiece point cloud data, and the lidar is used to transmit the workpiece point cloud data to a processing terminal; the processing terminal is used to generate model data of the workpiece according to the workpiece point cloud data, and place the model data coincidentally with the design model of the workpiece according to the feature points on the model data, and determine whether the difference amount after the model data coincides with the design model is greater than a preset value. If so, the difference amount is prompted on the output module; The lidar is also used to scan the workbench surface to obtain workbench surface point cloud data; the processing terminal is used to obtain the position of the workbench surface according to the workbench surface point cloud data, and control the lifting of the lifting device according to the position of the workbench; The lidar is also used to scan the materials on the workbench surface to obtain material point cloud data when the workbench surface rotates; the processing terminal is used to judge whether the center of gravity of the material point cloud data is located on the center line of the workbench surface point cloud data according to the material point cloud data and the workbench surface point cloud data. If so, it controls the milling and turning composite exchange workbench to process the materials.

2. The milling-turning composite exchange workbench according to claim 1, characterized in that, The isolation door includes a first door body, a second door body and a rotating rod. The installation groove on the first door body is fixed to the rotating arm. A receiving groove is provided below the second door body, and the top of the first door body is received in the receiving groove. When the lifting device rises from the low position to the high position state, the first door body moves in the receiving groove. The bottom of the rotating rod is fixed to the rotation center and penetrates through the first door body and the second door body. When the servo motor drives the rotating arm to rotate around the rotation center, the rotating arm drives the isolation door to rotate around the rotating rod.

3. The milling-turning composite exchange workbench according to claim 1, characterized in that, The sliding device includes a guide rail slider and a ball screw nut. The guide rail slider and the ball screw nut are arranged at the bottom of the workbench base, and the workbench base moves on the slide rail by using the guide rail slider and the ball screw nut.

4. The milling-turning composite exchange workbench according to claim 1, characterized in that, Two connecting blocks are provided on the outside of the clamping groove, and the connecting blocks protrude from the side wall of the clamping groove. The clamping mechanism includes a clamping part and a groove. The grooves are arranged on both sides of the clamping part. When the clamping mechanism is clamped with the clamping groove, the clamping part is embedded in the clamping groove, and the connecting block is embedded in the groove.

5. The milling-turning composite exchange workbench according to claim 4, characterized in that, A number of balance blocks are provided at the top edge of the workbench support seat, and the balance blocks are used to adjust the dynamic balance when the workbench support seat rotates together with the workbench surface.

6. The milling-turning compound exchange workbench according to claim 1, characterized in that, The lifting device includes a hydraulic cylinder and a lifting main body. The lifting main body is arranged on the top of the hydraulic cylinder, and the hydraulic cylinder is fixed to one end of the slide rail.

7. The milling-turning compound exchange workbench according to claim 1, characterized in that, The connecting part includes a rotating shaft fixed to the workbench support seat, and a brake pad is fixed on the outer surface of the rotating shaft. The braking mechanism is a self-locking braking mechanism. The self-locking braking mechanism includes an annular brake pressing cover, a brake cylinder body and a brake piston. The outer end face of the brake cylinder block is fixed to the brake gland, the inner end face of the brake cylinder block is used to be fixed to the workbench base, a fixing piece is clamped between the brake cylinder block and the brake gland, a gap for accommodating the brake pads is provided on one side of the fixing piece, and the other side of the fixing piece is the brake cylinder block and the brake piston arranged in the brake cylinder block. The inner surface of the brake cylinder block includes a cylinder block protrusion; The brake piston includes a piston cover, a piston main body, and a piston bead arranged on the outer surface of the piston main body. The piston cover is fixed to one end of the piston main body, the piston bead is arranged at the other end of the piston main body, the outer end face of the piston bead is adjacent to the fixing piece, and a plurality of central guide pins and elastic members sleeved on the central guide pins are arranged inside the piston bead. Accommodating counterbores with the same number as the central guide pins are provided on the outer end face of the cylinder block protrusion. The brake piston is positioned with the brake cylinder block through the central guide pins; A first hydraulic cavity is formed between the outer end face of the cylinder block protrusion and the inner end face of the piston bead, a second hydraulic cavity is formed between the inner end face of the cylinder block protrusion and the piston cover, a first oil injection hole connecting the first hydraulic cavity and a second oil injection hole connecting the second hydraulic cavity are provided on the outer surface of the brake cylinder block; In the state without hydraulic pressure, the elastic member exerts an outward thrust on the brake piston so that the inner end face of the brake gland, the brake pads, the fixing piece, and the outer end face of the piston bead are mutually extruded; After injecting oil into the first oil injection hole, the pressure in the first hydraulic cavity exerts an outward thrust on the brake piston; After injecting oil into the second oil injection hole, the pressure in the second hydraulic cavity exerts an inward thrust on the brake piston so that the inner end face of the brake gland, the brake pads, and the fixing piece are mutually separated.

8. The milling-turning compound exchange workbench according to claim 1, wherein The lidar includes a transmitter, two receivers, and a reflector. The transmitter and the first receiver are arranged above the workbench support seat. The emission direction of the transmitter and the reception direction of the first receiver are on the vertical line perpendicular to the horizontal plane. The laser emitted by the transmitter is reflected by the reflector and then received by the second receiver along the horizontal plane where the workbench surface is located. The transmitter and the first receiver are used to acquire workpiece point cloud data and send the workpiece point cloud data to the processing terminal; The processing terminal uses the workpiece point cloud data to acquire the workpiece three-dimensional model, and the processing terminal acquires the workpiece machining accuracy according to the workpiece three-dimensional model and the workpiece design model; The transmitter and the second receiver are used to acquire the workbench surface point cloud data when the workbench surface rotates and send the workbench surface point cloud data to the processing terminal; The processing terminal is also used to acquire the workbench surface three-dimensional models at at least two moments according to the workbench surface point cloud data; The processing terminal is also used to acquire the dynamic balance mass when the platform support seat and the workbench surface rotate together according to the coincidence degree of all the workbench surface three-dimensional models.

9. A working system, characterized in that, The working system includes the milling-turning composite exchange workbench according to any one of claims 1 to 8.

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