CN114472979B - Feeding, discharging, clamping, drilling and milling system and control method thereof - Google Patents

Abstract

The invention relates to the technical field of drilling and milling equipment, in particular to a feeding, discharging, clamping, drilling and milling system and a control method thereof, wherein the system comprises a feeding and discharging device, a buffering and conveying device, a lifting and conveying device and a numerical control drilling and milling machine tool, and the numerical control drilling and milling machine tool is provided with a window for the workpiece to enter and exit; the feeding and discharging device is abutted against the buffering and conveying device; the lifting device is connected with the buffer conveying device through the lifting conveying device, and is positioned above the buffer conveying device; the buffer conveying device is abutted against the window; the system further comprises a control device, and the feeding and discharging device, the buffering conveying device, the lifting device and the lifting conveying device are all in communication connection with the control device. The invention can realize reasonable feeding and discharging, improve the processing efficiency and the production efficiency and avoid unnecessary safety accidents.

Description

Feeding, discharging, clamping, drilling and milling system and control method thereof

Technical Field

The invention relates to the technical field of drilling and milling processing equipment, in particular to a feeding, discharging, clamping, drilling and milling system and a control method thereof.

Background

When the existing numerical control drilling and milling machine tool is used for processing a workpiece, the workpiece to be processed is mostly clamped and conveyed by manually utilizing a corresponding clamp, and then the workpiece is manually aligned in the numerical control drilling and milling machine tool to finish feeding and transportation; after the workpiece is machined, blanking and conveying still need to be finished manually. For the workpieces with larger volume and heavier weight, the fixture and the workpieces need to be hoisted by using a crane.

But the above-mentioned mode of going up unloading and clamping all needs artifical the participation, and staff intensity of labour is high, and machining efficiency is low, production efficiency is low. When the travelling crane is used for hoisting in and hoisting out, safety accidents are easy to happen.

The Chinese patent document with the publication number of CN102218555A discloses a high-precision multi-station numerical control drilling center for overlong workpieces, which comprises a host, a feeding system, a discharging system, a pneumatic and vacuum system, a drill adjusting system, a broken drill, a bald drill detecting and identifying system and a CNC numerical control and operating system, wherein a guide rail bracket is fixed on a main frame, a linear guide rail is fixed on the guide rail bracket, a linear guide rail sliding block is inserted and sleeved on the linear guide rail, a motor bracket is fixed or welded on the linear guide rail sliding block through a bolt, a variable frequency motor is fixed on the motor bracket through a bolt, a ball screw and a drilling servo motor are fixed on the guide rail bracket and are connected with each other through a coupler; the main machine hydraulic pressing mechanism comprises a hydraulic cylinder, a hydraulic pressure tool and a connecting rod, the hydraulic cylinder is fixed on the main machine frame through a bolt, one end of the connecting rod is hinged with the hydraulic cylinder, and the other end of the connecting rod is hinged with the hydraulic pressure tool; the patent literature can obviously improve the processing quality and the production efficiency of stainless steel holes and ensure the overall quality of the steel-aluminum composite conductor rail.

But above-mentioned scheme application scope is narrower, can't be applicable to the unloading of ordinary work piece, and goes up unloading inefficiency.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a feeding, discharging, clamping, drilling and milling system and a control method thereof, which can realize reasonable feeding and discharging, improve the processing efficiency and the production efficiency and avoid unnecessary safety accidents.

In order to solve the technical problems, the invention adopts the technical scheme that:

the system comprises a feeding and discharging device, a buffering and conveying device, a lifting and conveying device and a numerical control drilling and milling machine tool, wherein the numerical control drilling and milling machine tool is provided with a window for the workpiece to enter and exit; the feeding and discharging device is abutted against the buffer conveying device; the lifting device is connected with the buffer conveying device through the lifting conveying device, and is positioned above the buffer conveying device; the buffer conveying device is abutted against the window; the system further comprises a control device, and the feeding and discharging device, the buffering conveying device, the lifting device and the lifting conveying device are all in communication connection with the control device.

Preferably, the loading and unloading device comprises a first frame, a first conveying mechanism, a butt joint conveying mechanism and a first placing table, wherein the first conveying mechanism is arranged on the first frame, and the first placing table is connected with the first conveying mechanism through the butt joint conveying mechanism; the buffer conveying device comprises a second rack, a second conveying mechanism and a second placing table, wherein the second conveying mechanism is arranged on the second rack, and the second placing table is connected with the second conveying mechanism; the conveying stroke of the butting conveying mechanism is partially overlapped with the conveying stroke of the second conveying mechanism; the first conveying mechanism, the butt joint conveying mechanism and the second conveying mechanism are in communication connection with the control device; the fixed end of the hoisting and conveying device is connected with the second rack, the conveying end of the hoisting and conveying device is connected with the hoisting device, and the conveying stroke of the hoisting and conveying device is partially overlapped with the conveying stroke of the second conveying mechanism.

Preferably, the first conveying mechanism comprises a first guide rail and a first oil cylinder which are arranged on the first frame, the butt joint conveying mechanism is connected with the first guide rail through a first sliding plate, and the movable end of the first oil cylinder is connected with the butt joint conveying mechanism; the butt joint conveying mechanism comprises a second guide rail and a second oil cylinder which are arranged on the first sliding plate, the first placing table is connected with the second guide rail in a sliding mode, the movable end of the second oil cylinder is connected with the first placing table, and the fixed end of the second oil cylinder is connected with the movable end of the first oil cylinder; the second conveying mechanism comprises a third guide rail and a third oil cylinder which are arranged on the second rack, the second placing table is connected with the third guide rail in a sliding manner, and the movable end of the third oil cylinder is connected with the second placing table; the first oil cylinder, the second oil cylinder and the third oil cylinder are all in communication connection with the control device.

Preferably, the system further comprises a workpiece carrying platform, wherein the two sides of the workpiece carrying platform are provided with lugs convenient for hoisting; the first placing table and the second placing table are respectively connected with a plurality of first conical parts and second conical parts which are used for being positioned and clamped with the workpiece carrying platform; a plurality of third conical parts are also connected to the processing platform in the numerical control drilling and milling machine tool; and a plurality of taper holes matched with the conical parts are formed in the workpiece carrying platform.

Preferably, the processing platform is further provided with a corner cylinder for pressing the workpiece carrying platform, and the corner cylinder is in communication connection with the control device.

Preferably, the lifting device comprises a first lifting mechanism, a second lifting mechanism and a lifting hook plate, the first lifting mechanism is connected with the buffer conveying device through the lifting conveying device, and the lifting hook plate is connected with the first lifting mechanism through the second lifting mechanism; the lifting end of the second lifting mechanism is also provided with a limiting piece; and the first lifting mechanism and the second lifting mechanism are in communication connection with the control device.

Preferably, a first protective door is connected to the window through a sliding device, and the sliding device is in communication connection with the control device.

Preferably, the system further comprises a protective cover, and the buffer conveying device, the hoisting device and the hoisting conveying device are all located in the protective cover; the protective cover is provided with a plurality of second protective doors which can be opened and closed.

The invention also provides a control method of the feeding and discharging and clamping drilling and milling system, wherein two ends of the feeding and discharging device are respectively a feeding end and a discharging end, two ends of the buffer conveying device are respectively a hoisting butt-joint end and a buffer end, the feeding end abuts against the hoisting butt-joint end, and the hoisting butt-joint end abuts against the window; the control method comprises the following steps:

s11, a first-stage feeding stage of the workpieces in the current batch: placing the workpieces to be processed in the current batch on the first placing table through the workpiece carrying platform, controlling the first conveying mechanism to convey the first placing table and the workpiece carrying platform to the feeding end by the control device, and then executing the step S12;

s12, a second-stage feeding stage of the workpieces in the current batch: the control device controls the butt joint conveying mechanism to convey the first placing table and the workpiece carrying platform to the hoisting butt joint end, and then step S13 is executed;

s13, hoisting and sending the workpieces of the current batch into a stage: the control device controls the hoisting and conveying device to move the hoisting device, controls the hoisting device to hoist the workpiece carrying platform, and then controls the hoisting and conveying device to convey the hoisting device and the workpiece carrying platform to a machining platform in the numerical control drilling and milling machine tool; meanwhile, the first placing table retracts to the blanking end, and then step S14 is executed;

s14, the processing stage of the workpieces in the current batch is as follows: the numerical control drilling and milling machine tool performs drilling and milling processing on a workpiece to be processed, and after the processing is finished, the step S15 is executed;

s15, hoisting and sending out the workpieces in the current batch: the workpiece carrying platform loaded with the machined workpieces is lifted and conveyed by the lifting device and the lifting and conveying device, the workpiece carrying platform is conveyed to the second placing platform, and then the step S16 is executed;

s16, buffering the workpieces in the current batch: the control device controls the second conveying mechanism to convey the second placing table and the workpiece carrying platform to the buffer end, and then step S17 is executed;

s17, a first-stage blanking stage of the workpieces in the current batch: the control device controls the butt joint conveying mechanism to convey the first placing table to the lifting butt joint end, then controls the lifting device and the lifting conveying device to convey the workpiece carrying platform located at the second placing table to the first placing table, and then executes the step S18;

s18, the second-stage blanking stage of the workpieces in the current batch: the control device sequentially controls the butt joint conveying mechanism and the first conveying mechanism to convey the first placing table, so that the workpiece carrying platform is conveyed to the blanking end, and the transportation of the workpieces in the current batch is completed.

Further, the control method further comprises the following steps:

s21, a first-stage loading stage of workpieces of a next batch, wherein the step S21 is similar to the step S11;

s22, a second-stage loading stage of workpieces of the next batch, wherein the step S22 is similar to the step S12;

s23, hoisting and conveying the workpieces of the next batch, wherein the step S23 is similar to the step S13;

s24, a processing stage of workpieces of the next batch, wherein the step S24 is similar to the step S14;

s25, hoisting and sending out the workpieces of the next batch, wherein the step S25 is similar to the step S15;

s26, a buffering stage of a next batch of workpieces, wherein the step S26 is similar to the step S16;

s27, a first-stage blanking stage of the next batch of workpieces, wherein the step S27 is similar to the step S17;

s28, a second-stage blanking stage of the next batch of workpieces, wherein the step S28 is similar to the step S18;

wherein, the step S21 is executed after the step S13, the step S22 is executed in synchronization with the step S16, and the step S23 is executed in synchronization with or after the step S18.

Compared with the prior art, the invention has the beneficial effects that:

the invention comprises a feeding and discharging and clamping drilling and milling system and a control method thereof, wherein a feeding and discharging device is used for feeding and discharging a workpiece, a hoisting device and a hoisting and conveying device are used for hoisting the workpiece in or out from a window of a numerical control drilling and milling machine tool, and the numerical control drilling and milling machine tool is used for processing the workpiece; the processed workpieces are buffered through the buffering conveying device, and the feeding and discharging device is in an idle state at the moment, so that the next batch of workpieces can be fed, and the feeding and discharging efficiency of the workpieces is improved; after the next batch of workpieces enter the numerical control drilling and milling machine tool, the workpieces which are processed are discharged through the feeding and discharging device; the system also comprises a control device which can reasonably and orderly control the operation of each device. The automatic feeding and discharging device can realize reasonable feeding and discharging, improves the processing efficiency and the production efficiency, does not need manual participation in the whole processing process, and can avoid unnecessary safety accidents.

Drawings

FIG. 1 is a schematic structural view of a loading/unloading and clamping drilling and milling system according to the present invention;

FIG. 2 is a schematic structural view of another view of the loading/unloading and clamping drilling/milling system according to the present invention;

FIG. 3 is a schematic view of the structure of the loading and unloading device of the present invention;

FIG. 4 is an enlarged schematic view of section I of FIG. 3;

FIG. 5 is a schematic structural view of a loading and unloading device and a buffering and conveying device according to the present invention;

FIG. 6 is a diagram showing the operation states of the loading/unloading device and the buffer conveying device according to the present invention;

FIG. 7 is a schematic structural view of the buffer conveyer, the lifting device and the lifting conveyer of the present invention;

FIG. 8 is an enlarged view of portion J of FIG. 7;

FIG. 9 is a schematic view of the lifting device of the present invention;

FIG. 10 is a schematic structural view of a lifting and transporting device of the present invention;

FIG. 11 is a schematic structural diagram of the numerically controlled drilling and milling machine of the present invention;

FIG. 12 is an enlarged view of the portion K of FIG. 11;

FIG. 13 is an enlarged view of portion L of FIG. 11;

FIG. 14 is a schematic view of a structure of a work mounting table according to the present invention;

FIG. 15 is a flowchart of a control method of a loading/unloading and clamping drilling/milling system according to the present invention.

The graphic symbols are illustrated as follows:

1-a loading and unloading device, 11-a first frame, 12-a first conveying mechanism, 121-a first guide rail, 122-a first sliding plate, 123-a first oil cylinder, 124-a first connecting plate, 13-a butt-joint conveying mechanism, 131-a second guide rail, 132-a first sliding block, 133-a second oil cylinder, 14-a first placing table, 141-a first conical part, 15-a first universal ball group, 2-a buffer conveying device, 21-a second frame, 22-a second conveying mechanism, 221-a third guide rail, 222-a second sliding block, 223-a third oil cylinder, 224-a first connecting block, 23-a second placing table, 231-a second conical part, 24-a second universal ball group, 25-a liquid collecting tank and 3-a lifting device, 31-a first lifting mechanism, 311-a third frame, 312-a fourth guide rail, 313-a fourth oil cylinder, 32-a second lifting mechanism, 321-a fourth frame, 322-a fifth guide rail, 323-a fifth oil cylinder, 324-a second connecting plate, 325-a limiting member, 33-a lifting hook plate, 4-a lifting conveying device, 41-a sixth guide rail, 42-a third sliding block, 43-a ball screw rod assembly, 44-a second connecting block, 45-a driving assembly, 5-a numerical control drilling and milling machine tool, 51-a window, 52-a processing platform, 53-a third conical member, 54-a corner air cylinder, 55-a first protective door, 6-a control device, 7-a sliding device, 71-a seventh guide rail, 72-a fourth sliding block and 73-a sixth oil cylinder, 74-a mounting seat, 8-a protective cover, 81-a second protective door, 9-a workpiece carrying platform, 91-a bump, 92-a taper hole, 101-a first positioning sensing assembly, 102-a second positioning sensing assembly, 103-a third positioning sensing assembly, and 104-a fourth positioning sensing assembly.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

Example 1

As shown in fig. 1 to 2, a first embodiment of a loading, unloading, clamping, drilling and milling system according to the present invention includes a loading and unloading device 1, a buffer conveyor 2, a lifting device 3, a lifting conveyor 4, and a numerical control drilling and milling machine 5, wherein the numerical control drilling and milling machine 5 is provided with a window 51 for workpiece to enter and exit; the loading and unloading device 1 is abutted against the buffer conveying device 2; the hoisting device 3 is connected with the buffer conveying device 2 through the hoisting conveying device 4, and the hoisting device 3 is positioned above the buffer conveying device 2; the buffer conveyor 2 abuts against the window 51; the system further comprises a control device 6, and the feeding and discharging device 1, the buffering conveying device 2, the lifting device 3 and the lifting conveying device 4 are in communication connection with the control device 6.

The loading and unloading device 1 is used for loading and unloading workpieces, the hoisting device 3 and the hoisting and conveying device 4 are used for hoisting the workpieces in or out of a window 51 of the numerical control drilling and milling machine tool 5, and the numerical control drilling and milling machine tool 5 is used for machining the workpieces; the processed workpieces are buffered through the buffer conveying device 2, and the feeding and discharging device 1 is in an idle state at the moment, so that the next batch of workpieces can be fed, and the feeding and discharging efficiency of the workpieces is improved; after the next batch of workpieces enter the numerical control drilling and milling machine tool 5, the machined workpieces are fed through the feeding and discharging device 1; the system also comprises a control device 6, and the control device 6 can reasonably and orderly control the operation of each device. The automatic feeding and discharging device can achieve reasonable feeding and discharging, improves machining efficiency and production efficiency, does not need manual participation in the whole machining process, and can avoid unnecessary safety accidents.

As shown in fig. 1 and fig. 2, in this embodiment, the control device 6 includes a PLC controller and a hydraulic system electrically connected to the PLC controller, and the hydraulic system is connected to the loading and unloading device 1, the buffer conveying device 2, the lifting device 3, and the lifting conveying device 4 through different electromagnetic valves.

Example 2

The present embodiment is similar to embodiment 1, except that the upper blanking device 1 in the present embodiment includes a first frame 11, a first conveying mechanism 12, a docking conveying mechanism 13, and a first placing table 14, the first conveying mechanism 12 is mounted on the first frame 11, and the first placing table 14 is connected to the first conveying mechanism 12 through the docking conveying mechanism 13;

specifically, as shown in fig. 2 to 6, the first conveying mechanism 12 includes a first guide rail 121 mounted above the first frame 11, and further includes a first cylinder 123 mounted in the first frame 11, the first cylinder 123 being located below the first guide rail 121; a first sliding plate 122 is connected to the first guide rail 121 in a sliding manner, and the docking conveying mechanism 13 is connected to the upper surface of the first sliding plate 122; the piston rod of the first cylinder 123 is connected to the docking carriage mechanism 13 through the first connecting plate 124.

As shown in fig. 3 to 6, the docking transportation mechanism 13 includes a second guide rail 131 and a second oil cylinder 133 mounted on the first sliding plate 122, the extending directions of the second guide rail 131 and the first guide rail 121 are parallel to each other, a first slider 132 is connected to the second guide rail 131 in a sliding manner, and the first placing table 14 is connected to the first slider 132; the piston rod of the second cylinder 133 is connected to the bottom of the first placement stage 14, and the cylinder base of the second cylinder 133 is connected to the piston rod of the first cylinder 123 through the first connection plate 124.

As shown in fig. 4 and 6, a first ball group 15 is further arranged on the first frame 11 along the extending direction of the first guide rail 121, and the first ball group 15 is in rolling contact with the bottom of the first sliding plate 122 for supporting the first sliding plate 122.

The buffer conveyor 2 includes a second frame 21, a second conveying mechanism 22, and a second placement table 23, the second conveying mechanism 22 is mounted on the second frame 21, and the second placement table 23 is connected to the second conveying mechanism 22.

As shown in fig. 2 and 5 to 8, the second transport mechanism 22 includes a third guide rail 221 and a third cylinder 223 mounted on the second frame 21, the third guide rail 221 and the first guide rail 121 extend in a direction perpendicular to each other, a second slider 222 is slidably connected to the third guide rail 221, the second slider 222 is connected to the bottom of the second placement table 23, and a piston rod of the third cylinder 223 is connected to the second placement table 23 through a first connection block 224. As shown in fig. 5 and 6, a second ball gimbal assembly 24 is further mounted on the second frame 21, and the second ball gimbal assembly 24 is configured to be in rolling contact with the bottom of the extended first sliding plate 122 and support 122 the first sliding plate 122. In this embodiment, a liquid collecting tank 25 is arranged at one end of the second frame 21 close to the numerical control drilling and milling machine tool 5, and the liquid collecting tank 25 is used for collecting cutting liquid and preventing the cutting liquid from splashing into the buffer conveying device 2.

In this embodiment, the first oil cylinder 123, the second oil cylinder 133 and the third oil cylinder 223 are all connected with the hydraulic system through three different electromagnetic valves, and the different electromagnetic valves are controlled to be connected through the PLC controller, so that the operation of each oil cylinder is realized.

The transfer stroke of the docking transfer mechanism 13 partially overlaps the transfer stroke of the second transfer mechanism 21, that is, the docking transfer mechanism 13 can transfer the first placement stage 14 to the upper side of the second rack 21, as shown in fig. 6. The fixed end of the lifting and conveying device 4 is connected to the second frame 21, and the conveying stroke of the lifting and conveying device 4 and the conveying stroke of the second conveying mechanism 22 are partially overlapped and parallel to each other in the embodiment.

Example 3

The embodiment is similar to embodiment 2, except that, as shown in fig. 14, the system in the embodiment further includes a workpiece carrying platform 9, and both sides of the workpiece carrying platform 9 are provided with protrusions 91 for facilitating hoisting; the first placing table 14 and the second placing table 23 are respectively connected with a plurality of first conical members 141 and second conical members 231 for positioning and clamping with the workpiece carrying platform 9, as shown in fig. 5; a plurality of third conical parts 53 are also connected to the processing platform 52 in the numerical control drilling and milling machine 5, as shown in fig. 11 and 13; the work mounting platform 9 is provided with a plurality of tapered holes 92 that match the tapered members, as shown in fig. 14. When the workpiece mounting platform 9 is butted against the first placing platform 14, the second placing platform 23, or the machining platform 52, the conical member is correspondingly matched with the conical block 92 so as to be positioned and butted.

In addition, a plurality of corner cylinders 54 for pressing the workpiece carrying platform 9 are further clamped on the processing platform 52, the corner cylinders 54 are connected with the hydraulic system through electromagnetic valves, and the electromagnetic valves are controlled to be switched on through a PLC controller, so that the operation of the corner cylinders 54 is realized, as shown in fig. 11 and 13.

Example 4

The present embodiment is similar to embodiment 3, except that the lifting device 3 in the present embodiment includes a first lifting mechanism 31, a second lifting mechanism 32, and a lifting hook plate 33, the first lifting mechanism 31 is connected to the buffer conveyor 2 through the lifting conveyor 4, and the lifting hook plate 33 is connected to the first lifting mechanism 31 through the second lifting mechanism 32; the lifting end of the second lifting mechanism 32 is further provided with a limiting member 325; the first lifting mechanism 31 and the second lifting mechanism 32 are both connected with the control device 6 in a communication way. The first lifting mechanism 31 and the second lifting mechanism 32 are provided, so that the lifting stroke can be increased without increasing the volume of the lifting device 3, and the space utilization of the system can be improved.

Specifically, as shown in fig. 7 to 9, the first lifting mechanism 31 includes a third frame 311, a fourth guide rail 312, and a fourth oil cylinder 313, the third frame 311 is connected to the conveying end of the lifting and conveying device 4, the fourth guide rail 312 is vertically installed on the third frame 311, and the second lifting mechanism 32 is slidably connected to the fourth guide rail 312; the fourth oil cylinders 313 are positioned at two sides of the third frame 311, the cylinder bases of the fourth oil cylinders 313 are fixedly connected with the third frame 311, the piston rods of the fourth oil cylinders 313 are connected with the second lifting mechanism 32, and the fourth oil cylinders 313 are connected with the hydraulic system through electromagnetic valves. When the lifting device is used, the fourth oil cylinder 313 drives the second lifting mechanism 32 and the lifting hook plate 33 to slide on the fourth guide rail 312, so that first-stage lifting is realized.

As shown in fig. 7 to 9, the second lifting mechanism 32 includes a fourth frame 321, a fifth guide rail 322, a fifth oil cylinder 323, and a second connecting plate 324, wherein the fourth frame 321 is slidably connected to the fourth guide rail 312 through the second connecting plate 324; the fifth guide rail 322 is slidably connected to the fourth frame 321, and the lifting hook plate 33 is fixedly connected to the fifth guide rail 322; a cylinder seat of the fifth oil cylinder 323 is fixedly connected with the fourth frame 321, a piston rod of the fifth oil cylinder 323 is fixedly connected with the fifth guide rail 322, and the fifth oil cylinder 323 is connected with the hydraulic system through an electromagnetic valve. When the lifting appliance is used, the fifth oil cylinder 323 drives the fifth guide rail 322 and the lifting hook plate 33 to slide on the fourth rack 321, so that second-stage lifting is realized.

As shown in fig. 7 and 9, in the embodiment, the limiting member 325 is a limiting plate, the limiting plate is connected to the fifth rail 322, and the limiting plate is located right above the fourth frame 321, and when the fifth rail 322 slides downward to a certain position, the limiting plate contacts with the fourth frame 321 to achieve limiting.

In addition, the hoisting and conveying device 4 includes a sixth guide rail 41, a third slider 42, a ball screw assembly 43, a second connecting block 44, and a driving assembly 45, as shown in fig. 10, the sixth guide rail 41 is mounted on the second frame 21, and the extending directions of the sixth guide rail 41 and the third guide rail 221 are parallel to each other; the third sliding block 42 is connected with the sixth guide rail 41 in a sliding manner, and the third frame 311 is connected with the third sliding block 42; the ball screw assembly 43 is connected with the second frame 21 through a bearing fixing seat, a nut of the ball screw assembly 43 is connected with the third sliding block 42 through a second connecting block 44, and a screw of the ball screw assembly 43 is in transmission connection with the driving assembly 45; in this embodiment, the driving assembly 45 is a motor, the motor is electrically connected to the PLC controller, and the motor is controlled by the PLC controller to drive the third slider 42 and the lifting device 3 to slide along the sixth guide rail 41 through the ball screw assembly 43.

Example 5

This embodiment is similar to embodiment 4, except that in this embodiment, a first protective door 55 is connected to the window 51 through a sliding device 7, and the sliding device 7 is connected to the control device 6 in a communication manner. As shown in fig. 11 and 12, the sliding device 7 includes a seventh guide rail 71, a fourth slider 72, a sixth oil cylinder 73, and a mounting seat 74, the seventh guide rail 71 is mounted at the edge of the window 51, the fourth slider 72 is slidably connected with the seventh guide rail 71, and the first protective door 55 is fixedly connected with the fourth slider 72; the sixth oil cylinder 73 is positioned above the window 51, a cylinder base of the sixth oil cylinder 73 is connected with the outer side wall of the numerical control drilling and milling machine tool 5 through a mounting base 74, a piston rod of the sixth oil cylinder 73 is connected with the fourth slider 72, and the sixth oil cylinder 73 is connected with a hydraulic system through an electromagnetic valve. When the window is used, the sixth oil cylinder 73 drives the fourth slider 72 and the first protective door 55 to slide on the seventh guide rail 71, so that the first protective door 55 is opened and closed at the window 51. When a workpiece is machined in the numerical control drilling and milling machine 5, the first guard door 55 is closed, and thus, the cutting fluid, chips, and the like during machining can be prevented from splashing out.

Example 6

The embodiment is similar to the embodiment 5, except that the system in the embodiment further comprises a protective cover 8, and the buffer conveying device 2, the lifting device 3 and the lifting conveying device 4 are all located in the protective cover 8; the protection hood 8 is provided with a plurality of second protection doors 81 which can be opened and closed, as shown in fig. 1 and 2.

Example 7

This embodiment is similar to any of embodiments 1 to 6, except that the system in this embodiment further includes a first positioning sensing assembly 101 mounted on the first sliding plate 122, a second positioning sensing assembly 102 mounted in the first frame 11, a third positioning sensing assembly 103 mounted on the third frame 311, and a fourth positioning sensing assembly 104 mounted on the fourth frame 321; the first positioning sensing assembly 101, the second positioning sensing assembly 102, the third positioning sensing assembly 103 and the fourth positioning sensing assembly 104 are all electrically connected with the PLC.

Specifically, as shown in fig. 3, the second positioning sensing assembly 102 is located at an end of the first frame 11 away from the base of the first cylinder 123, and is used for detecting whether the piston rod of the first cylinder 123 extends to the farthest end, so as to obtain the current position of the first placing table 14. As shown in fig. 4, the first positioning sensing assembly 101 is mounted at a front end position of the first slide plate 122, i.e., at an end close to the buffer conveyor 2, for detecting a current position of the first placing table 14.

As shown in fig. 8 and 9, the third positioning sensing assembly 103 is located at an end of the third frame 311 away from the cylinder seat of the fourth cylinder 313, and is used for detecting whether the piston rod of the fourth cylinder 313 extends to the farthest end; the fourth positioning sensing assembly 104 is located at the top of the fourth frame 321 and near the position of the limiting member 325, and is used for detecting the current height position of the limiting member 325. The current height position of the lifting hook plate 33 can be obtained by detecting the positions of the third positioning sensing unit 103 and the fourth positioning sensing unit 104. In this embodiment, the four sensing assemblies may be infrared sensors, which are not limited herein.

Example 8

As shown in fig. 14, which is a first embodiment of the control method of the loading and unloading and clamping drilling and milling system according to the present invention, two ends of the loading and unloading device 1 are respectively a loading end and a unloading end, two ends of the buffer conveyor 2 are respectively a hoisting butt end and a buffer end, the loading end abuts against the hoisting butt end, and the hoisting butt end abuts against the window 51; the control method comprises the following steps:

s11, a first-stage feeding stage of the workpieces in the current batch: the workpieces to be processed of the current lot are placed on the first placing table 14 through the workpiece mounting platform 9, the control device 6 controls the first conveying mechanism 12 to convey the first placing table 14 and the workpiece mounting platform 9 to the loading end, and then step S12 is executed.

Specifically, step S11 includes: a plurality of workpieces to be processed of the current batch are placed on the first placing platform 14 through the workpiece carrying platform 9; the control device 6 controls the first cylinder 123 to retract, so that the first sliding plate 122 slides on the first guide rail 121 in the direction toward the buffer conveyor 2 until the feeding end stops.

S12, a second-stage feeding stage of the workpieces in the current batch: the control device 6 controls the docking and conveying mechanism 13 to convey the first placing table 14 and the workpiece mounting platform 9 to the hoisting and docking end, and then executes step S13.

Specifically, step S12 includes: the control device 6 controls the second oil cylinder 133 to extend, so that the first placing table 14 slides on the second guide rail 131 toward the buffer conveyor 2 until the hoisting butt end stops.

S13, hoisting and feeding the workpieces in the current batch: the control device 6 controls the hoisting and conveying device 4 to move the hoisting device 3, controls the hoisting device 3 to hoist the workpiece carrying platform 9, and then controls the hoisting and conveying device 4 to convey the hoisting device 3 and the workpiece carrying platform 9 to a processing platform 52 in the numerical control drilling and milling machine 5; meanwhile, the first placing table 14 is retracted to the blanking end, and then step S14 is performed.

Specifically, step S13 includes the steps of:

s131, the control device 6 sequentially controls the fourth oil cylinder 313 and the fifth oil cylinder 323 to extend out, so that the lifting hook plate 33 descends;

s132, the control device 6 controls the driving assembly 45 to start, and drives the third sliding block 42 and the lifting device 3 connected with the third sliding block 42 through the ball screw assembly 43 to move towards the position of the first placing table 14 on the sixth guide rail 41;

s133, after the lifting hook plate 33 is clamped with the bump 91, the control device 6 controls the fourth oil cylinder 313 and the fifth oil cylinder 323 to retract, so that the lifting hook plate 33 rises and drives the workpiece carrying platform 9 to rise at the same time;

s134, the control device 6 continuously controls the driving assembly 45 to operate, the lifting device 3 and the workpiece carrying platform 9 are conveyed to a machining platform 52 in the numerical control drilling and milling machine tool 5, the taper hole 92 is aligned with the third taper piece 53, then the lug 91 is loosened from the lifting hook plate 33, and then the lifting and conveying device 4 exits the numerical control drilling and milling machine tool 5;

s135, the control device 6 controls the second oil cylinder 133 to retract, the first oil cylinder 123 to extend, and the first placing table 14 retracts to the discharging end; it should be noted that, the first placing table 14 retreats to the blanking end, which facilitates the first placing table 14 to receive the workpieces of the next batch, and improves the feeding efficiency.

S14, processing the workpieces in the current batch: and the numerical control drilling and milling machine tool 5 performs drilling and milling on the workpiece to be processed, and after the processing is finished, the step S15 is executed.

Specifically, step S14 includes the steps of:

s141, the control device 6 controls the sixth oil cylinder 73 to retract, so that the fourth sliding block 72 slides on the seventh guide rail 71, and the first protective door 55 is closed;

and S142, carrying out drilling and milling on the workpiece to be processed positioned on the processing platform 52 by the numerical control drilling and milling machine tool 5.

S15, hoisting and sending out the workpieces in the current batch: the workpiece mounting platform 9 on which the processed workpiece is loaded is lifted and transported by the lifting and transporting devices 3 and 4, the workpiece mounting platform 9 is transported to the second placing table 23, and then step S16 is performed.

Specifically, step S15 includes: the control device 6 controls the first protective door 55 to be opened, and controls the lifting and conveying device 4 and the lifting and conveying device 3 to convey the workpiece carrying platform 9 loaded with the finished workpiece onto the second placing table 23, the taper hole 92 is aligned with the second taper member 231, then the bump 91 is released from the lifting hook plate 33, and the lifting and conveying device 4 and the lifting and conveying device 3 return to the initial positions.

S16, buffering the workpieces in the current batch: the controller 6 controls the second transport mechanism 22 to transport the second placing table 23 and the workpiece mounting table 9 to the buffer end, and then executes step S17.

Specifically, step S16 includes: the control device 6 controls the third cylinder 223 to retract, and causes the second placing table 23 to slide on the third guide rail 221 until the buffer end stops.

S17, a first-stage blanking stage of the workpieces in the current batch: the control device 6 controls the docking and transporting mechanism 13 to transport the first placing table 14 to the hoisting and docking end, then controls the hoisting device 3 and the hoisting and transporting device 4 to transport the workpiece mounting platform 9 located at the second placing table 23 to the first placing table 14, and then executes step S18.

S18, the second-stage blanking stage of the workpieces in the current batch: the control device 6 controls the docking and conveying mechanism 13 and the first conveying mechanism 12 to convey the first placing table 14 in sequence, so that the workpiece carrying platform 9 is conveyed to the discharging end to finish the transportation of the workpieces in the current batch.

Example 9

The present embodiment is similar to embodiment 8, except that the control method in the present embodiment further includes the following steps:

s21, a first-stage feeding stage of the next batch of workpieces, wherein the step S21 is basically the same as the step S11, and the difference is that the feeding object is changed into the next batch of workpieces;

s22, a second-stage loading stage of workpieces of the next batch, wherein the step S22 is basically consistent with the step S12;

s23, hoisting and conveying the workpieces of the next batch, wherein the step S23 is basically consistent with the step S13;

s24, in the processing stage of the workpieces of the next batch, the step S24 is basically consistent with the step S14;

s25, hoisting and sending out the workpieces of the next batch, wherein the step S25 is basically consistent with the step S15;

s26, buffering the workpieces of the next batch, wherein the step S26 is basically consistent with the step S16;

s27, a first-stage blanking stage of workpieces of the next batch, wherein the step S27 is basically consistent with the step S17;

s28, in the second stage of blanking of the workpieces of the next batch, the step S28 is basically consistent with the step S18.

Wherein step S21 is performed after step S13, step S22 is performed in synchronization with step S16, and step S23 is performed in synchronization with or after step S18.

It should be noted that, after the first placing table 14 is retracted to the discharging end, the first-stage feeding of the next batch of workpieces can be performed, that is, step S21 is performed; when the workpiece mounting platform 9 loaded with the finished workpieces is conveyed to the buffer end, the second-stage feeding of the next batch of workpieces can be carried out, namely, the step S22 is executed; when the docking and conveying mechanism 13 and the first conveying mechanism 12 convey the workpiece mounting platform 9 and the first placing platform 14 on which the machined workpieces are mounted, the next batch of workpieces can be lifted and sent to the numerical control drilling and milling machine 5, that is, step S23 is executed.

Example 10

This embodiment is similar to embodiment 8 or 9, except that the control method in this embodiment further includes: in each step, the first positioning sensing assembly 101, the second positioning sensing assembly 102, the third positioning sensing assembly 103 and the fourth positioning sensing assembly 104 perform real-time detection, and transmit position signals to the PLC controller, thereby obtaining the current position of the workpiece carrying platform 9.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (9)

1. A loading, unloading and clamping drilling and milling system comprises a numerical control drilling and milling machine tool (5), and is characterized in that the numerical control drilling and milling machine tool (5) is provided with a window (51) for the entering and exiting of a workpiece; the system also comprises a loading and unloading device (1), a buffering conveying device (2), a lifting device (3) and a lifting conveying device (4), wherein the loading and unloading device (1) is abutted against the buffering conveying device (2); the lifting device (3) is connected with the buffer conveying device (2) through a lifting conveying device (4), and the lifting device (3) is positioned above the buffer conveying device (2); the buffer conveying device (2) is abutted against the window (51); the system also comprises a control device (6), wherein the feeding and discharging device (1), the buffering and conveying device (2), the lifting device (3) and the lifting and conveying device (4) are in communication connection with the control device (6); wherein:

the loading and unloading device (1) comprises a first rack (11), a first conveying mechanism (12), a butt joint conveying mechanism (13) and a first placing table (14), wherein the first conveying mechanism (12) is arranged on the first rack (11), and the first placing table (14) is connected with the first conveying mechanism (12) through the butt joint conveying mechanism (13);

the buffer conveying device (2) comprises a second rack (21), a second conveying mechanism (22) and a second placing table (23), wherein the second conveying mechanism (22) is arranged on the second rack (21), and the second placing table (23) is connected with the second conveying mechanism (22);

the system also comprises a workpiece carrying platform (9), wherein both sides of the workpiece carrying platform (9) are provided with lugs (91) convenient for hoisting; the first placing table (14) and the second placing table (23) are respectively connected with a plurality of first conical parts (141) and second conical parts (231) which are used for positioning and clamping with the workpiece carrying platform (9); a plurality of third conical parts (53) are also connected to the machining platform (52) in the numerical control drilling and milling machine tool (5); the workpiece carrying platform (9) is provided with a plurality of taper holes (92) matched with the taper pieces.

2. The loading, unloading and clamping drilling and milling system according to claim 1, characterized in that the delivery stroke of the docking delivery mechanism (13) is partially overlapped with the delivery stroke of the second delivery mechanism (21); the first conveying mechanism (12), the butt joint conveying mechanism (13) and the second conveying mechanism (22) are in communication connection with the control device (6);

the fixed end of the hoisting and conveying device (4) is connected with the second rack (21), the conveying end of the hoisting and conveying device (4) is connected with the hoisting device (3), and the conveying stroke of the hoisting and conveying device (4) is partially overlapped with the conveying stroke of the second conveying mechanism (22).

3. The loading, unloading, clamping, drilling and milling system according to claim 2, wherein the first transporting mechanism (12) comprises a first guide rail (121) mounted on the first frame (11), and a first oil cylinder (123), the docking transporting mechanism (13) is connected with the first guide rail (121) through a first sliding plate (122), and the movable end of the first oil cylinder (123) is connected with the docking transporting mechanism (13);

the butt joint conveying mechanism (13) comprises a second guide rail (131) and a second oil cylinder (133) which are arranged on the first sliding plate (122), the first placing table (14) is connected with the second guide rail (131) in a sliding mode, the movable end of the second oil cylinder (133) is connected with the first placing table (14), and the fixed end of the second oil cylinder (133) is connected with the movable end of the first oil cylinder (123);

the second conveying mechanism (22) comprises a third guide rail (221) and a third oil cylinder (223) which are arranged on the second rack (21), the second placing table (23) is connected with the third guide rail (221) in a sliding mode, and the movable end of the third oil cylinder (223) is connected with the second placing table (23);

the first oil cylinder (123), the second oil cylinder (133) and the third oil cylinder (223) are all in communication connection with the control device (6).

4. The loading, unloading, clamping, drilling and milling system as claimed in claim 1, wherein the machining platform (52) is further provided with an angle cylinder (54) for pressing the workpiece carrying platform (9), and the angle cylinder (54) is in communication connection with the control device (6).

5. The loading, unloading, clamping, drilling and milling system according to claim 1, wherein the lifting device (3) comprises a first lifting mechanism (31), a second lifting mechanism (32) and a lifting hook plate (33), the first lifting mechanism (31) is connected with the buffer conveying device (2) through the lifting conveying device (4), and the lifting hook plate (33) is connected with the first lifting mechanism (31) through the second lifting mechanism (32); the lifting end of the second lifting mechanism (32) is also provided with a limiting piece (325); the first lifting mechanism (31) and the second lifting mechanism (32) are in communication connection with the control device (6).

6. The loading, unloading and clamping drilling and milling system according to claim 1, wherein a first protective door (55) is connected to the window (51) through a sliding device (7), and the sliding device (7) is in communication connection with the control device (6).

7. The loading, unloading, clamping, drilling and milling system according to claim 1, further comprising a protective cover (8), wherein the buffer conveyor (2), the lifting device (3) and the lifting conveyor (4) are all located in the protective cover (8); the protective cover (8) is provided with a plurality of second protective doors (81) which can be opened and closed.

8. The control method applied to the loading and unloading and clamping drilling and milling system as claimed in any one of claims 2 to 7, wherein two ends of the loading and unloading device (1) are respectively a loading end and a unloading end, two ends of the buffer conveying device (2) are respectively a hoisting butt-joint end and a buffer end, the loading end abuts against the hoisting butt-joint end, and the hoisting butt-joint end abuts against the window (51); the control method comprises the following steps:

s11, a first-stage loading stage of the workpieces in the current batch: placing the workpieces to be processed in the current batch on the first placing table (14) through the workpiece carrying platform (9), controlling the first conveying mechanism (12) by the control device (6) to convey the first placing table (14) and the workpiece carrying platform (9) to the feeding end, and then executing the step S12;

s12, a second-stage feeding stage of the workpieces in the current batch: the control device (6) controls the butt joint conveying mechanism (13) to convey the first placing table (14) and the workpiece carrying platform (9) to the hoisting butt joint end, and then step S13 is executed;

s13, hoisting and feeding the workpieces in the current batch: the control device (6) controls the hoisting and conveying device (4) to move the hoisting device (3), controls the hoisting device (3) to hoist the workpiece carrying platform (9), and then controls the hoisting and conveying device (4) to convey the hoisting device (3) and the workpiece carrying platform (9) to a machining platform (52) in the numerical control drilling and milling machine (5); meanwhile, the first placing table (14) retracts to the blanking end, and then step S14 is executed;

s14, processing the workpieces in the current batch: the numerical control drilling and milling machine tool (5) performs drilling and milling on a workpiece to be processed, and after the processing is finished, the step S15 is executed;

s15, hoisting and sending out the workpieces in the current batch: the workpiece carrying platform (9) loaded with the machined workpieces is lifted and conveyed by the lifting device (3) and the lifting and conveying device (4), the workpiece carrying platform (9) is conveyed to the second placing platform (23), and then the step S16 is executed;

s16, buffering the workpieces in the current batch: the control device (6) controls the second conveying mechanism (22) to convey the second placing table (23) and the workpiece carrying platform (9) to the buffer end, and then step S17 is executed;

s17, a first-stage blanking stage of the workpieces in the current batch: the control device (6) controls the docking and conveying mechanism (13) to convey the first placing table (14) to the hoisting and docking end, then controls the hoisting device (3) and the hoisting and conveying device (4) to convey the workpiece carrying platform (9) located at the second placing table (23) to the first placing table (14), and then executes the step S18;

s18, the second-stage blanking stage of the workpieces in the current batch: the control device (6) sequentially controls the butt joint conveying mechanism (13) and the first conveying mechanism (12) to convey the first placing table (14), so that the workpiece carrying platform (9) is conveyed to the blanking end to finish the transportation of the workpieces in the current batch.

9. The control method for the loading, unloading, clamping, drilling and milling system according to claim 8, further comprising the steps of:

s21, a first-stage loading stage of workpieces of the next batch, wherein the step S21 is similar to the step S11;

s22, a second-stage loading stage of the next batch of workpieces, wherein the step S22 is similar to the step S12;

s23, hoisting and conveying the workpieces of the next batch, wherein the step S23 is similar to the step S13;

s24, a processing stage of workpieces of the next batch, wherein the step S24 is similar to the step S14;

s25, hoisting and sending out the workpieces of the next batch, wherein the step S25 is similar to the step S15;

s26, a buffering stage of a next batch of workpieces, wherein the step S26 is similar to the step S16;

s27, a first-stage blanking stage of the next batch of workpieces, wherein the step S27 is similar to the step S17;

s28, a second-stage blanking stage of the next batch of workpieces, wherein the step S28 is similar to the step S18;

wherein, the step S21 is executed after the step S13, the step S22 is executed in synchronization with the step S16, and the step S23 is executed in synchronization with or after the step S18.

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