Multi-station combined machine tool and processing method

Abstract

The present invention belongs to the field of modular machine tools, and provides a multi-station modular machine tool and a processing method, including a processing table, a circular groove is provided on the top of the processing table, a first servo motor is fixedly installed at the bottom of the circular groove, the output shaft of the first servo motor is fixedly connected to a turntable, the diameter of the turntable is smaller than the diameter of the circular groove, and also includes: a plurality of automatic clamping mechanisms, a plurality of station slots are provided on the turntable, the plurality of station slots are evenly distributed around the axis of the turntable, and the plurality of automatic clamping mechanisms are respectively installed in the plurality of station slots. When the present invention is used, the staff stands at a distance from the machine tool and places the workpieces to be processed on the conveyor belt in turn, and the conveyor belt can drive the workpieces to be processed for loading, which is simple to operate and not easily accidentally damaged by the machine tool, and the unloading conveyor automatically unloads the processed workpieces without the assistance of the staff, which saves time and reduces the workload of the staff.

Description

Technical Field

[0001] The invention belongs to the field of modular machine tools, and in particular relates to a multi-station modular machine tool and a processing method. Background Art

[0002] A modular machine tool refers to a special-purpose machine tool that is based on serialized and standardized general components and is equipped with a small number of special components. The modular machine tool can use multi-tool, multi-surface and multi-station processing on the workpiece. It is particularly suitable for processing one or several similar parts in large-scale and mass production. One or several processes. The modular machine tool can complete drilling, reaming, boring, tapping, turning, milling, grinding, rolling and other processes.

[0003] Most of the existing multi-station combination machine tools realize process switching through a rotating worktable. The above processing method still requires manual loading and unloading. When a station completes all processes, the staff needs to remove the workpiece and then reinstall a new unprocessed workpiece. Since the time for each process is very short, the staff needs to replace the workpiece in a very short time. The operation is difficult and very easy to make mistakes. Since the staff stands near the machine tool, they are also easily injured. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-station combined machine tool and a processing method, aiming to solve the technical problems in the prior art that workers are prone to errors and injuries due to manual loading and unloading of materials.

[0005] The present invention is implemented as follows: a multi-station combined machine tool comprises a processing table, a circular groove is formed on the top of the processing table, a first servo motor is fixedly installed at the bottom of the circular groove, an output shaft of the first servo motor is fixedly connected to a turntable, and the diameter of the turntable is smaller than the diameter of the circular groove, and further comprises:

[0006] A plurality of automatic clamping mechanisms, wherein a plurality of workstation slots are provided on the turntable, and the plurality of workstation slots are evenly distributed around the axis of the turntable, and the plurality of automatic clamping mechanisms are respectively installed in the plurality of workstation slots, and the automatic clamping mechanisms are used to clamp the workpiece to be processed under the cooperation of the inner wall of the circular slot;

[0007] A loading conveyor and a discharging conveyor, both of which are installed on the processing table, the loading conveyor is located on one side of the discharging conveyor along the rotation direction of the turntable, one end of the loading conveyor and the discharging conveyor are respectively located below two adjacent automatic clamping mechanisms, the processing table is provided with a loading notch and a discharging notch respectively adapted to the loading conveyor and the discharging conveyor, the loading conveyor is used to deliver the workpiece to be processed to the interior of the automatic clamping mechanism, and the discharging conveyor is used to deliver the workpiece to be processed in the automatic clamping mechanism;

[0008] Multiple processing equipment are installed on the top of the processing table, and the positions of the multiple processing equipment respectively correspond to the positions of multiple adjacent automatic clamping mechanisms. The multiple processing equipment are installed in sequence and distributed along the rotation direction of the turntable. The processing equipment is used to process the workpiece to be processed.

[0009] Further technical solution: the automatic clamping mechanism includes an outer frame and an inner frame which are slidably connected inside the work station slot, a first compression spring is connected between the outer frame and the side wall of the work station slot, an outer rack is provided on the side of the outer frame close to the inner frame, and an inner rack is provided on the side of the inner frame close to the outer frame, an intermediate gear is rotatably connected to the bottom of the work station slot, the intermediate gear is located between the outer frame and the inner frame, the outer rack and the inner rack are both meshed with the intermediate gear, two fixed shafts are fixedly connected to the bottom of the work station slot, both of the fixed shafts are rotatably connected with clamping jaws, the two clamping jaws are symmetrically arranged, a connecting head is fixedly connected to the side of the inner frame away from the axis of the turntable, one end of the connecting head is hinged to two connecting plates, one end of the two connecting plates is hinged to one end of the two clamping jaws respectively, the end of the outer frame is fixedly connected to a connecting rod, and the end of the connecting rod is fixedly connected to a guide ball head.

[0010] Further technical solution: the sides of the feeding notch and the discharging notch along the rotation direction of the turntable are both provided with guide fillets.

[0011] Further technical solution: the connecting rod is an elastic telescopic rod, which includes an outer sleeve fixedly connected to the end of the outer frame, a movable rod is inserted into one end of the outer sleeve, the guide ball head is fixedly connected to one end of the movable rod, and a second compression spring is connected between the movable rod and the outer sleeve.

[0012] Further technical solution: the loading conveyor includes a fixed frame fixedly connected to the processing table, one end of the fixed frame is fixedly connected to a mounting frame, both ends of the mounting frame are rotatably connected to transmission rollers, a conveyor belt is transmission-connected between the two transmission rollers, the upper surface of the conveyor belt is flush with the bottom of the circular groove, a second servo motor is fixedly installed on the side of the mounting frame, the output shaft of the second servo motor is fixedly connected to one end of a transmission roller, the structure of the discharging conveyor is the same as that of the loading conveyor, but the movement directions of the discharging conveyor and the loading conveyor are opposite.

[0013] Further technical solution: the number of the workstation slots is five, the number of the processing equipment is three, and the three processing equipment are a drilling machine, a chamfering machine and a tapping machine.

[0014] Further technical solution: also includes a self-start and stop mechanism, which is installed on the side wall of the loading notch, and the loading conveyor and the discharging conveyor are electrically connected to the self-start and stop mechanism. When there is no workpiece between the two clamps, the self-start and stop mechanism connects the power of the discharging conveyor and the loading conveyor, and the discharging conveyor drives the workpiece to be discharged, and the loading conveyor drives the workpiece to be processed to be loaded. When the loading of the workpiece to be processed is completed, the self-start and stop mechanism cuts off the power of the discharging conveyor and the loading conveyor to prevent the loading conveyor from continuing to load, thereby reducing the power consumption of the discharging conveyor.

[0015] Further technical solution: The self-start and stop mechanism includes a switch box, which is installed on the side wall of the loading notch near the unloading conveyor, and the switch box is connected to a sliding block for transverse sliding inside, and a third compression spring is connected between the sliding block and the switch box. A pressure switch is arranged on the side of the sliding block near the automatic clamping mechanism, and the loading conveyor and the unloading conveyor are both electrically connected to the pressure switch. An extrusion block is connected to the internal longitudinal sliding of the switch box, and a tension spring is connected between the extrusion block and the switch box. A push rod is fixedly connected to the side of the extrusion block away from the sliding block, and one end of the push rod extending out of the switch box is fixedly connected to a push plate, and the push plate contacts the guide ball head, and a push block is connected to the internal transverse sliding of the switch box, and the push block contacts the side of the sliding block, and the side of the push block away from the sliding block is fixedly connected to the extrusion rod, and one end of the extrusion rod extends out of the switch box, and an interception plate is hinged on the side of the switch box, and one end of the interception plate extends to the middle part of the loading conveyor, and a torsion spring is arranged between the interception plate and the switch box.

[0016] A method for machining a workpiece using the multi-station combined machine tool comprises the following steps:

[0017] S01: Turn on the power of the loading conveyor and the discharging conveyor;

[0018] S02: Put the workpiece to be processed on the loading conveyor, the loading conveyor drives the workpiece to be processed to be loaded, and the unloading conveyor unloads the workpiece that has been processed;

[0019] S03: After the loading is completed, the power supply of the loading conveyor and the discharging conveyor is cut off, and then the first servo motor is started, and the first servo motor drives the turntable to rotate one station, and the turntable drives the workpiece to be processed to rotate through the automatic clamping mechanism. When the automatic clamping mechanism rotates to the inside of the circular groove, the workpiece to be processed is clamped;

[0020] S04: At the same time, the power of the loading conveyor and the discharging conveyor is turned on again, step S02 is repeated, and the processing equipment is started, and the processing equipment processes the workpiece;

[0021] S05: Repeat steps S02 to S04 to achieve cyclic processing.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The staff stands far away from the machine tool and places the workpieces to be processed on the conveyor belt in turn. The conveyor belt can drive the workpieces to be processed for loading. The operation is simple and not easily damaged by the machine tool. The unloading conveyor will automatically unload the processed workpieces without the assistance of the staff, which saves time and reduces the workload of the staff.

[0024] 2. After the feeding conveyor conveys the workpiece to be processed between the two clamping jaws, the first servo motor drives the turntable and the automatic clamping mechanism to rotate. When the guide ball head contacts the inner wall of the circular groove, it is squeezed by the inner wall of the circular groove, and the guide ball head drives the connecting rod and the outer frame to move. The outer frame drives the inner rack and the inner frame to move in the opposite direction. The inner frame drives the clamping jaws to rotate through the connecting head and the connecting plate. The two clamping jaws clamp the workpiece to be processed and drive the workpiece to be processed to the next station, making the workpiece to be processed more stable and its processing accuracy higher;

[0025] 3. When the workpiece has completed all the processes, the guide ball head will come out from the inner wall of the circular groove and move into the discharge notch. Under the action of the first compression spring, the two clamping jaws release the workpiece, making it easier for the discharge conveyor to discharge the workpiece.

[0026] 4. When clamping workpieces of different sizes, the opening angles of the two clamping jaws are different, which leads to different movement distances of the inner frame and the outer frame. Since the diameter of the circular groove is fixed, in order to prevent the guide ball head from being unable to enter the interior of the circular groove or the clamping jaw from being unable to clamp the workpiece, the present invention sets a second compression spring as a motion compensation. According to the different distances of the outer frame movement, the second compression spring is subjected to different compression deformations. Therefore, the present invention can process workpieces of different sizes, and the application range of the present invention is wider;

[0027] 5. When the loading conveyor drives the workpiece to be processed to load, the workpiece pushes the intercepting plate to rotate, the intercepting plate squeezes the extrusion rod, and drives the extrusion rod to move, the extrusion rod drives the sliding block and the pressure switch to move through the push block, when the workpiece to be processed is loaded, the pressure switch is separated from the extrusion block, the pressure switch returns to its original state, the power supply of the loading conveyor and the discharging conveyor is cut off, preventing the loading conveyor from continuing to load, and reducing the power consumption of the discharging conveyor;

[0028] 6. The present invention provides a guide fillet so that the guide ball head can slide along the guide fillet, thereby enabling it to smoothly enter the interior of the circular groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall front view structure of the present invention.

[0030] Figure 2 For the present invention Figure 1 A is an enlarged schematic diagram.

[0031] Figure 3 It is a schematic diagram of the overall side view of the structure of the present invention.

[0032] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged view at B.

[0033] Figure 5 It is a schematic diagram of the structure of the inner and outer frames of the present invention.

[0034] Figure 6 It is a schematic diagram of the structure of the top cross section of the automatic start-stop mechanism in the present invention.

[0035] Figure 7 The figure is a flow chart of the processing method using the device in the present invention.

[0036] In the attached drawings: 1, processing table; 2, discharge conveyor; 3, round groove; 4, turntable; 5, automatic clamping mechanism; 51, first compression spring; 52, connector; 53, outer frame; 54, connecting plate; 55, outer rack; 56, inner rack; 57, intermediate gear; 58, fixed shaft; 59, clamping claw; 510, connecting rod; 5101, second compression spring; 5102, outer sleeve; 5103, movable rod; 511, guide ball head; 512, inner frame; 6, tapping machine; 7, chamfering machine; 8, drilling machine; 9 , feeding conveyor; 91, fixed frame; 92, conveyor belt; 93, transmission roller; 94, mounting frame; 95, second servo motor; 10, feeding notch; 11, discharging notch; 12, station slot; 13, automatic start and stop mechanism; 131, intercepting plate; 132, extrusion rod; 133, push block; 134, extrusion block; 135, tension spring; 136, push plate; 137, push rod; 138, pressure switch; 139, sliding block; 1310, third compression spring; 1311, switch box; 14, guide fillet. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0039] like Figure 1-Figure 6As shown, a multi-station combined machine tool provided by the present invention comprises a processing table 1, a circular groove 3 is formed on the top of the processing table 1, a first servo motor is fixedly installed at the bottom of the circular groove 3, a turntable 4 is fixedly connected to the output shaft of the first servo motor, and the diameter of the turntable 4 is smaller than the diameter of the circular groove 3, and further comprises:

[0040] A plurality of automatic clamping mechanisms 5, wherein a plurality of workstation slots 12 are provided on the turntable 4, and the plurality of workstation slots 12 are evenly distributed around the axis of the turntable 4, and the plurality of automatic clamping mechanisms 5 are respectively installed in the plurality of workstation slots 12, and the automatic clamping mechanisms 5 are used to clamp the workpiece to be processed under the cooperation of the inner wall of the circular groove 3;

[0041] A loading conveyor 9 and a discharging conveyor 2, both of which are installed on the processing table 1, the loading conveyor 9 is located on one side of the discharging conveyor 2 along the rotation direction of the turntable 4, one end of the loading conveyor 9 and the discharging conveyor 2 are respectively located below two adjacent automatic clamping mechanisms 5, and the processing table 1 is provided with a loading notch 10 and a discharging notch 11 respectively adapted to the loading conveyor 9 and the discharging conveyor 2, the loading conveyor 9 is used to deliver the workpiece to be processed to the inside of the automatic clamping mechanism 5, and the discharging conveyor 2 is used to deliver the workpiece to be processed in the automatic clamping mechanism 5;

[0042] Multiple processing equipment, multiple processing equipment are installed on the top of the processing table 1, and the positions of the multiple processing equipment respectively correspond to the positions of multiple adjacent automatic clamping mechanisms 5, the multiple processing equipment installation processes are distributed in sequence along the rotation direction of the turntable 4, and the processing equipment is used to process the workpiece to be processed.

[0043] like Figure 3-Figure 5As shown, a multi-station combination machine tool provided by the present invention, in this embodiment, the automatic clamping mechanism 5 includes an outer frame 53 and an inner frame 512 slidably connected inside the station slot 12, a first compression spring 51 is connected between the outer frame 53 and the side wall of the station slot 12, an outer rack 55 is provided on the side of the outer frame 53 close to the inner frame 512, and an inner rack 56 is provided on the side of the inner frame 512 close to the outer frame 53, and an intermediate gear 57 is rotatably connected to the bottom of the station slot 12, and the intermediate gear 57 is located between the outer frame 53 and the inner frame 512. 55 and the inner rack 56 are both meshed and connected with the intermediate gear 57, the bottom of the work station slot 12 is fixedly connected with two fixed shafts 58, and the two fixed shafts 58 are rotatably connected with clamps 59, and the two clamps 59 are symmetrically arranged, and the side of the inner frame 512 away from the axis of the turntable 4 is fixedly connected with a connecting head 52, one end of the connecting head 52 is hinged to two connecting plates 54, and one end of the two connecting plates 54 is hinged to one end of the two clamps 59 respectively, and the end of the outer frame 53 is fixedly connected to a connecting rod 510, and the end of the connecting rod 510 is fixedly connected to a guide ball head 511.

[0044] After the loading conveyor 9 transports the workpiece to be processed between the two clamping jaws 59, the first servo motor drives the turntable 4 to rotate, and the turntable 4 drives the automatic clamping mechanism 5 to rotate. When the guide ball head 511 contacts the inner wall of the circular groove 3, it is squeezed by the inner wall of the circular groove 3, and the guide ball head 511 drives the connecting rod 510 and the outer frame 53 to move. The outer frame 53 drives the intermediate gear 57 to rotate through the outer rack 55, and the intermediate gear 57 drives the inner rack 56 and the inner frame 512 to move in the opposite direction. The inner frame 512 drives the clamping jaws 59 to rotate through the connecting head 52 and the connecting plate 54. The two clamping jaws 59 clamp the workpiece to be processed and drive the workpiece to be processed to the next workstation, so that the workpiece to be processed is more stable and its processing accuracy is higher.

[0045] When the workpiece has completed all the processes, the guide ball head 511 will come out from the inner wall of the circular groove 3 and move into the discharge notch 11. Under the action of the first compression spring 51, the two clamping jaws 59 release the workpiece, making it easier for the discharge conveyor 2 to discharge the workpiece.

[0046] like Figure 4 As shown, a multi-station combination machine tool provided by the present invention, in order to allow the guide ball head 511 to smoothly enter the interior of the circular groove 3, in this embodiment, the sides of the loading notch 10 and the discharging notch 11 along the rotation direction of the turntable 4 are both provided with guide fillets 14.

[0047] like Figure 3-Figure 5As shown, a multi-station combination machine tool provided by the present invention. In order to enable the device to process workpieces of different sizes, in this embodiment, the connecting rod 510 is an elastic telescopic rod, and the connecting rod 510 includes an outer sleeve 5102 fixedly connected to the end of the outer frame 53, and a movable rod 5103 is inserted at one end of the outer sleeve 5102. The guide ball head 511 is fixedly connected to one end of the movable rod 5103, and a second compression spring 5101 is connected between the movable rod 5103 and the outer sleeve 5102.

[0048] When clamping workpieces of different sizes, the opening angles of the two jaws 59 are different, which leads to different movement distances of the inner frame 512 and the outer frame 53. Since the diameter of the circular groove 3 is fixed, in order to prevent the guide ball head 511 from being unable to enter the interior of the circular groove 3, or the jaws 59 from being unable to clamp the workpiece, in this embodiment, a second compression spring 5101 is provided as motion compensation. According to the different movement distances of the outer frame 53, the amount of compression deformation of the second compression spring 5101 is also different. Therefore, the present invention can process workpieces of different sizes, and the scope of application of the present invention is wider.

[0049] like Figure 1-Figure 2 As shown, a multi-station combination machine tool provided by the present invention, in this embodiment, the loading conveyor 9 includes a fixed frame 91 fixedly connected to the processing table 1, one end of the fixed frame 91 is fixedly connected to a mounting frame 94, both ends of the interior of the mounting frame 94 are rotatably connected to transmission rollers 93, a conveyor belt 92 is transmission-connected between the two transmission rollers 93, the upper surface of the conveyor belt 92 is flush with the bottom of the circular groove 3, a second servo motor 95 is fixedly installed on the side of the mounting frame 94, the output shaft of the second servo motor 95 is fixedly connected to one end of a transmission roller 93, the structure of the discharging conveyor 2 is the same as that of the loading conveyor 9, but the movement directions of the discharging conveyor 2 and the loading conveyor 9 are opposite.

[0050] The staff stands at a distance from the machine tool and places the workpieces to be processed on the conveyor belt 92 one by one. The conveyor belt 92 can drive the workpieces to be processed for loading. The operation is simple and not easily damaged by the machine tool. The discharge conveyor 2 will automatically unload the processed workpieces without the assistance of the staff, which saves time and reduces the workload of the staff.

[0051] like Figure 1 and Figure 3 As shown, a multi-station combination machine tool provided by the present invention, in this embodiment, the number of the station slots 12 is five, the number of the processing equipment is three, and the three processing equipment are a drilling machine 8, a chamfering machine 7 and a tapping machine 6.

[0052] like Figure 3-Figure 6As shown, a multi-station combination machine tool provided by the present invention, in this embodiment, also includes a self-start and stop mechanism 13, the self-start and stop mechanism 13 is installed on the side wall of the loading notch 10, the loading conveyor 9 and the discharging conveyor 2 are both electrically connected to the self-start and stop mechanism 13, when there is no workpiece between the two clamps 59, the self-start and stop mechanism 13 connects the power of the discharging conveyor 2 and the loading conveyor 9, the discharging conveyor 2 drives the workpiece to be discharged, and the loading conveyor 9 drives the workpiece to be processed to be loaded, when the loading of the workpiece to be processed is completed, the self-start and stop mechanism 13 cuts off the power of the discharging conveyor 2 and the loading conveyor 9 to prevent the loading conveyor 9 from continuing to load, thereby reducing the power consumption of the discharging conveyor 2.

[0053] like Figure 3-Figure 6 As shown, a multi-station combination machine tool provided by the present invention, in this embodiment, the automatic start-stop mechanism 13 includes a switch box 1311, the switch box 1311 is installed on the side wall of the feeding notch 10 close to the discharge conveyor 2, the switch box 1311 is laterally slidably connected with a sliding block 139 inside, a third compression spring 1310 is connected between the sliding block 139 and the switch box 1311, a pressure switch 138 is provided on the side of the sliding block 139 close to the automatic clamping mechanism 5, the feeding conveyor 9 and the discharge conveyor 2 are both electrically connected to the pressure switch 138, the switch box 1311 is longitudinally slidably connected with an extrusion block 134 inside, a tension spring 135 is connected between the extrusion block 134 and the switch box 1311. The side of the extrusion block 134 facing away from the sliding block 139 is fixedly connected with a push rod 137, and one end of the push rod 137 extending out of the switch box 1311 is fixedly connected with a push plate 136, and the push plate 136 contacts the guide ball head 511, and the inside of the switch box 1311 is laterally slidably connected with a push block 133, and the push block 133 contacts the side of the sliding block 139, and the side of the push block 133 facing away from the sliding block 139 is fixedly connected with an extrusion rod 132, and one end of the extrusion rod 132 extends out of the switch box 1311, and the side of the switch box 1311 is hinged with an intercepting plate 131, and one end of the intercepting plate 131 extends to the middle of the feeding conveyor 9, and a torsion spring is arranged between the intercepting plate 131 and the switch box 1311.

[0054] When the turntable 4 drives the automatic clamping mechanism 5 to rotate to the feeding notch 10, under the action of the first compression spring 51, the guide ball head 511 will squeeze the push plate 136 and drive the push plate 136 to move. The push plate 136 drives the extrusion block 134 to move through the push rod 137, so that the extrusion block 134 squeezes the pressure switch 138, and then the power supply of the feeding conveyor 9 and the discharging conveyor 2 is turned on. The discharging conveyor 2 drives the processed workpiece to be discharged, and the feeding conveyor 9 drives the workpiece to be processed to be loaded; when the feeding conveyor 9 drives the workpiece to be processed to be loaded When the workpiece to be processed is loaded, the workpiece pushes the intercepting plate 131 to rotate, the intercepting plate 131 squeezes the squeezing rod 132, and drives the squeezing rod 132 to move, the squeezing rod 132 drives the pushing block 133 to move, the pushing block 133 drives the sliding block 139 and the pressure switch 138 to move, when the workpiece to be processed is loaded, the pressure switch 138 is separated from the squeezing block 134, the pressure switch 138 returns to its original state, the power supply of the loading conveyor 9 and the discharging conveyor 2 is cut off, so as to prevent the loading conveyor 9 from continuing to load materials and reduce the power consumption of the discharging conveyor 2;

[0055] At the same time, under the action of the torsion spring, the intercepting plate 131 returns to its original position. Since the position of the extrusion block 134 remains unchanged, the pressure switch 138 is blocked by the extrusion block 134 and will no longer be squeezed. When the guide ball head 511 is removed from the push plate 136, under the action of the tension spring 135, the extrusion block 134 moves away from the sliding block 139, and the pressure switch 138 can return to its original position.

[0056] like Figure 7 As shown, a processing method for processing a workpiece using the above-mentioned multi-station combined machine tool provided by the present invention comprises the following steps:

[0057] S01: Turn on the power of the feeding conveyor 9 and the discharging conveyor 2;

[0058] S02: Put the workpiece to be processed on the loading conveyor 9, the loading conveyor 9 drives the workpiece to be processed to be loaded, and the unloading conveyor 2 unloads the workpiece that has been processed;

[0059] S03: After the loading is completed, the power supply of the loading conveyor 9 and the discharging conveyor 2 is cut off, and then the first servo motor is started, and the first servo motor drives the turntable 4 to rotate one station, and the turntable 4 drives the workpiece to be processed to rotate through the automatic clamping mechanism 5. When the automatic clamping mechanism 5 rotates to the inside of the circular groove 3, the workpiece to be processed is clamped;

[0060] S04: At the same time, the power of the loading conveyor 9 and the discharging conveyor 2 is turned on again, and step S02 is repeated, and the processing equipment is started, and the processing equipment processes the workpiece;

[0061] S05: Repeat steps S02 to S04 to achieve cyclic processing.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0063] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multi-station modular machine tool, comprising a processing table (1), characterized in that: The top of the processing table (1) is provided with a circular groove (3), the bottom of the circular groove (3) is fixedly mounted with a first servo motor, the output shaft of the first servo motor is fixedly connected with a turntable (4), the diameter of the turntable (4) is smaller than the diameter of the circular groove (3), and further comprises: A plurality of automatic clamping mechanisms (5), wherein the turntable (4) is provided with a plurality of workstation slots (12), the plurality of workstation slots (12) being evenly distributed around the axis of the turntable (4), the plurality of automatic clamping mechanisms (5) being respectively installed in the plurality of workstation slots (12), and the automatic clamping mechanisms (5) being used to clamp the workpiece to be processed under the cooperation of the inner wall of the circular slot (3); A loading conveyor (9) and a discharging conveyor (2), wherein the loading conveyor (9) and the discharging conveyor (2) are both installed on a processing table (1), the loading conveyor (9) is located on one side of the discharging conveyor (2) along the rotation direction of the turntable (4), one end of the loading conveyor (9) and the discharging conveyor (2) are respectively located below two adjacent automatic clamping mechanisms (5), and the processing table (1) is provided with a loading notch (10) and a discharging notch (11) respectively adapted to the loading conveyor (9) and the discharging conveyor (2), the loading conveyor (9) is used to deliver the workpiece to be processed into the interior of the automatic clamping mechanism (5), and the discharging conveyor (2) is used to deliver the workpiece to be processed in the automatic clamping mechanism (5); A plurality of processing devices, each of which is installed on the top of the processing table (1), and the positions of the plurality of processing devices respectively correspond to the positions of the plurality of adjacent automatic clamping mechanisms (5), and the plurality of processing devices are sequentially distributed along the rotation direction of the turntable (4) according to the processing steps of the workpiece to be processed, and the processing devices are used to process the workpiece to be processed; The automatic clamping mechanism (5) comprises an outer frame (53) and an inner frame (512) which are slidably connected inside a work station slot (12); a first compression spring (51) is connected between the outer frame (53) and the side wall of the work station slot (12); an outer rack (55) is provided on the side of the outer frame (53) close to the inner frame (512); an inner rack (56) is provided on the side of the inner frame (512) close to the outer frame (53); an intermediate gear (57) is rotatably connected to the bottom of the work station slot (12); the intermediate gear (57) is located between the outer frame (53) and the inner frame (512); the outer rack (55) and the inner rack (56) are both rotatably connected to the intermediate gear (57); The work station slot (12) is meshed with an intermediate gear (57), the bottom of the work station slot (12) is fixedly connected to two fixed shafts (58), the two fixed shafts (58) are rotatably connected to clamps (59), the two clamps (59) are symmetrically arranged, the side of the inner frame (512) away from the axis of the turntable (4) is fixedly connected to a connecting head (52), one end of the connecting head (52) is hinged to two connecting plates (54), one end of the two connecting plates (54) is hinged to one end of the two clamps (59), the end of the outer frame (53) is fixedly connected to a connecting rod (510), and the end of the connecting rod (510) is fixedly connected to a guide ball head (511).

2. The multi-station combined machine tool according to claim 1, characterized in that: The sides of the loading notch (10) and the discharging notch (11) along the rotation direction of the turntable (4) are both provided with guide fillets (14).

3. The multi-station combined machine tool according to claim 1, characterized in that: The connecting rod (510) is an elastic telescopic rod, comprising an outer sleeve (5102) fixedly connected to the end of the outer frame (53), a movable rod (5103) being inserted into one end of the outer sleeve (5102), the guide ball head (511) being fixedly connected to one end of the movable rod (5103), and a second compression spring (5101) being connected between the movable rod (5103) and the outer sleeve (5102).

4. The multi-station machine tool according to claim 1, characterized in that: The loading conveyor (9) comprises a fixed frame (91) fixedly connected to the processing table (1), one end of the fixed frame (91) is fixedly connected to a mounting frame (94), both ends of the mounting frame (94) are rotatably connected to transmission rollers (93), a conveyor belt (92) is transmission-connected between the two transmission rollers (93), the upper surface of the conveyor belt (92) is flush with the bottom of the circular groove (3), a second servo motor (95) is fixedly mounted on the side of the mounting frame (94), the output shaft of the second servo motor (95) is fixedly connected to one end of a transmission roller (93), the structure of the discharging conveyor (2) is the same as that of the loading conveyor (9), and the movement directions of the discharging conveyor (2) and the loading conveyor (9) are opposite.

5. The multi-station combined machine tool according to claim 1, characterized in that: The number of the workstation slots (12) is five, and the number of the processing equipment is three, and the three processing equipment are respectively a drilling machine (8), a chamfering machine (7), and a tapping machine (6).

6. The multi-station combined machine tool according to claim 1, characterized in that: It also includes a self-starting and stopping mechanism (13), which is installed on the side wall of the loading notch (10), and the loading conveyor (9) and the discharging conveyor (2) are both electrically connected to the self-starting and stopping mechanism (13), and the self-starting and stopping mechanism (13) is used to connect and disconnect the power supply of the discharging conveyor (2) and the loading conveyor (9).

7. The multi-station combined machine tool according to claim 6, characterized in that: The automatic start-stop mechanism (13) comprises a switch box (1311), the switch box (1311) being mounted on a side wall of a loading notch (10) close to a discharging conveyor (2), a sliding block (139) being slidably connected to the interior of the switch box (1311) in a transverse manner, a third compression spring (1310) being connected between the sliding block (139) and the switch box (1311), a pressure switch (138) being arranged on a side of the sliding block (139) close to the automatic clamping mechanism (5), the loading conveyor (9) and the discharging conveyor (2) being electrically connected to the pressure switch (138), an extrusion block (134) being slidably connected to the interior of the switch box (1311) in a longitudinal manner, a tension spring (135) being connected between the extrusion block (134) and the switch box (1311), the extrusion block (134) being away from the sliding block A push rod (137) is fixedly connected to the side of the switch box (139); one end of the push rod (137) extending out of the switch box (1311) is fixedly connected to a push plate (136); the push plate (136) contacts the guide ball head (511); a push block (133) is slidably connected to the inside of the switch box (1311) in a transverse manner; the push block (133) contacts the side of the sliding block (139); a squeeze rod (132) is fixedly connected to the side of the push block (133) facing away from the sliding block (139); one end of the squeeze rod (132) extends out of the switch box (1311); an intercepting plate (131) is hingedly connected to the side of the switch box (1311); one end of the intercepting plate (131) extends to the middle of the feeding conveyor (9); a torsion spring is arranged between the intercepting plate (131) and the switch box (1311).

8. A method for machining a workpiece using a multi-station combined machine tool as claimed in claim 6 or 7, characterized in that: The steps include: S01: Turn on the power of the loading conveyor (9) and the discharging conveyor (2); S02: placing the workpiece to be processed onto the loading conveyor (9), the loading conveyor (9) drives the workpiece to be processed to be loaded, and the unloading conveyor (2) unloads the workpiece that has been processed; S03: After the loading is completed, the power supply of the loading conveyor (9) and the discharging conveyor (2) is cut off, and then the first servo motor is started, and the first servo motor drives the turntable (4) to rotate one station, and the automatic clamping mechanism (5) clamps the workpiece to be processed; S04: At the same time, the power of the loading conveyor (9) and the discharging conveyor (2) is turned on again, step S02 is repeated, and the processing equipment is started, and the processing equipment processes the workpiece; S05: Repeat steps S02 to S04.

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