CN113210661A

CN113210661A - Automatic drilling machine system

Info

Publication number: CN113210661A
Application number: CN202110537919.4A
Authority: CN
Inventors: 黄天祥; 黄慧敏
Original assignee: Yau Lee Wah Concrete Precast Products Shenzhen Co ltd
Current assignee: Yau Lee Wah Concrete Precast Products Shenzhen Co ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-08-06

Abstract

The invention discloses an automatic drilling machine system, comprising: the device comprises a first drilling machine (11), a second drilling machine (12), a transmission rail (2), a material pushing assembly (3), a first moving assembly capable of driving the material pushing assembly (3) to move back and forth, a second moving assembly and a third moving assembly capable of driving the first drilling machine (11) to move back and forth and up and down, a fourth moving assembly and a fifth moving assembly capable of driving the second drilling machine (12) to move back and forth and up and down, a limiting assembly (5) capable of blocking a metal piece (10) to move forward, a locking assembly capable of fixing the metal piece (10), a sensor and a control electronic box internally provided with a PLC (programmable logic controller); the first drilling machine (11), the second drilling machine (12), the components and the sensors are respectively connected with a control electronic box and controlled by a PLC. The automatic drilling machine system has high automation degree, can greatly reduce the labor intensity of workers, improves the processing efficiency, has higher precision, and can automatically drill the upper surface and the lower surface of a metal piece.

Description

Automatic drilling machine system

Technical Field

The invention relates to the technical field of drilling devices, in particular to a drilling machine system capable of automatically drilling the upper surface and the lower surface of a workpiece.

Background

In the prior art, during the process of drilling on the surface of a metal part such as an aluminum material, many links need manual participation, for example: measuring the size, the opening position, the hole site size and the like of the aluminum material; putting the aluminum material on an operation table and pushing the aluminum material to a set position for fixing; drilling holes on the surface of the aluminum material, and the like; and when the upper surface and the lower surface of the aluminum material need to be drilled, the aluminum material also needs to be turned over, fixed again, measured and the like. Therefore, a plurality of links in the whole drilling process need manual operation, the automation degree of the device is reduced, the operation efficiency is low, the drilling is not accurate enough, the phenomenon that the aluminum material and other parts are assembled in the links is caused, and the assembling speed and accuracy are influenced.

Disclosure of Invention

The invention aims to provide an automatic drilling machine system which has high automation degree and drilling accuracy and can drill the upper surface and the lower surface of a metal piece.

The present invention provides an automatic drilling machine system, comprising:

the transmission rail is arranged on the workbench and used for placing the metal piece and enabling the metal piece to move back and forth on the transmission rail;

the first drilling machine is arranged above the transmission rail and used for drilling the upper surface of the metal piece;

the second drilling machine is arranged below the transmission rail and used for drilling the lower surface of the metal piece;

the pushing assembly is used for pushing the metal piece to advance along the conveying track;

the first moving assembly is used for driving the pushing assembly to move back and forth along the transmission track;

the second moving assembly is used for driving the first drilling machine to move back and forth;

the third moving assembly is used for driving the first drilling machine to move up and down;

the fourth moving assembly is used for driving the second drilling machine to move back and forth;

the fifth moving assembly is used for driving the second drilling machine to move up and down;

the limiting assembly is used for blocking the metal piece positioned at the drilling station from moving forwards;

the locking assembly is used for fixing the metal piece positioned at the drilling station;

the sensor is arranged on one side of the transmission track and used for detecting whether a metal piece exists or not;

a control electric box internally provided with a PLC;

the first drilling machine, the second drilling machine, the material pushing assembly, the first moving assembly, the second moving assembly, the third moving assembly, the fourth moving assembly, the fifth moving assembly, the limiting assembly, the locking assembly and the sensor are respectively connected with the control electronic box and controlled by the PLC.

The pushing assembly comprises: the device comprises a first cylinder, a support piece, a push block and a spring; the supporting piece is driven by the first cylinder to lift, the push block is arranged in front of the supporting piece in a sliding mode, and the spring is clamped between the supporting piece and the push block.

The pushing assemblies are arranged in a front group and a rear group, a connecting plate is fixedly connected between the two groups of pushing assemblies and fixedly connected with a connecting piece, and the connecting piece is connected with the first moving assembly.

The first moving assembly includes: the first guide rail, the first ball screw, the first motor and the first synchronous wheel assembly;

the first guide rail is arranged on one side of the transmission track and is parallel to the length direction of the transmission track; the first ball screw is parallel to the first guide rail, and the connecting piece is arranged on the first guide rail and is fixedly connected with a nut seat arranged on the first ball screw; the first synchronous wheel component is composed of a synchronous wheel fixed on the output shaft of the first motor, a synchronous wheel fixed on the first ball screw and a synchronous belt, and the first motor drives the first ball screw to rotate through the first synchronous wheel component so as to drive the connecting piece to move forwards or backwards.

The second moving assembly includes: the second guide rail, the second ball screw, the second motor and the second synchronous wheel assembly;

the second guide rail is arranged on one side above the transmission rail and is parallel to the length direction of the transmission rail; the second ball screw is parallel to the second guide rail, the first drilling machine is arranged on a first drilling machine mounting assembly, and the first drilling machine mounting assembly is arranged on the second guide rail and is fixedly connected with a nut seat arranged on the second ball screw; the second synchronous wheel component consists of a synchronous wheel fixed on the output shaft of the second motor, a synchronous wheel fixed on the second ball screw and a synchronous belt, and the second motor drives the second ball screw to rotate through the second synchronous wheel component so as to drive the first drilling machine mounting component to move forwards or backwards.

The third movement assembly is mounted on the first drill mounting assembly and comprises: the third guide rail, the third ball screw, the third motor and the third synchronous wheel assembly;

the third guide rail and the third ball screw are both vertically arranged, the first drilling machine mounting assembly comprises a first fixing plate fixedly connected with the first drilling machine, and the first fixing plate is mounted on the third guide rail and fixedly connected with a nut seat arranged on the third ball screw; the third synchronous wheel component is composed of a synchronous wheel fixed on the output shaft of the third motor, a synchronous wheel fixed on the third ball screw and a synchronous belt, and the third motor drives the third ball screw to rotate through the third synchronous wheel component so as to drive the first fixing plate to move upwards or downwards.

The fourth moving assembly includes: the fourth guide rail, the fourth ball screw, the fourth motor and the fourth synchronous wheel assembly;

the fourth guide rail is arranged on one side below the transmission rail and is parallel to the length direction of the transmission rail; the fourth ball screw is parallel to the fourth guide rail, the second drilling machine is arranged on a second drilling machine mounting assembly, and the second drilling machine mounting assembly is arranged on the fourth guide rail and is fixedly connected with a nut seat arranged on the fourth ball screw; the fourth synchronous wheel component consists of a synchronous wheel fixed on the output shaft of the fourth motor, a synchronous wheel fixed on the fourth ball screw and a synchronous belt, and the fourth motor drives the fourth ball screw to rotate through the fourth synchronous wheel component so as to drive the second drilling machine mounting component to move forwards or backwards.

The fifth movement assembly is mounted on a second drill mounting assembly, comprising: the fifth guide rail, the fifth ball screw, the fifth motor and the fifth synchronous wheel assembly;

the second drilling machine mounting assembly comprises a second fixing plate fixedly connected with a second drilling machine, and the second fixing plate is mounted on the fifth guide rail and fixedly connected with a nut seat arranged on the fifth ball screw; the fifth synchronous wheel component is composed of a synchronous wheel fixed on the output shaft of the fifth motor, a synchronous wheel fixed on the fifth ball screw and a synchronous belt, and the fifth motor drives the fifth ball screw to rotate through the fifth synchronous wheel component so as to drive the second fixing plate to move upwards or downwards.

The limiting assemblies are provided with two groups, one group is arranged at the front end of the transmission track, and the other group is arranged at the middle of the transmission track;

every spacing subassembly of group includes: the limiting block, the second cylinder and the limiting mounting bracket; the limiting mounting support is mounted on one side of the transmission track, the second air cylinder is mounted on the limiting mounting support, and the limiting block is driven by the second air cylinder to extend or retract towards the transmission track.

The locking assembly comprises a locking cylinder assembly, a rotary clamping cylinder assembly, a fixed cylinder assembly and a push rod cylinder assembly;

the locking cylinder subassembly is equipped with the multiunit and is located the transmission track middle section, every group locking cylinder subassembly includes: the clamping block, the third cylinder and the clamping mounting block; the clamping mounting block is fixedly mounted on the workbench, the third cylinder is mounted on the clamping mounting block, the clamping block is of an L-shaped structure consisting of a horizontal plate and a vertical plate, and the horizontal plate is fixed on the third cylinder and driven by the third cylinder to move left and right; when the third cylinder is retracted, the vertical plate of the clamping block clamps the side surface of the metal piece at the clamping block;

the rotary clamping cylinder assemblies are provided with a plurality of groups and are positioned at the front section and the middle section of the conveying track, and each group of rotary clamping cylinder assemblies comprises a rotary clamping cylinder and a pressing piece; the pressing piece is arranged on an output shaft of the rotary clamping cylinder and is driven by the rotary clamping cylinder to rotate to press the top of the metal piece at the position of the pressing piece;

the ejector rod air cylinder assembly is provided with a plurality of groups and is positioned at the front section of the conveying track, each group of ejector rod air cylinder assembly comprises a fourth air cylinder and an ejector rod, and the ejector rod is fixed on an output shaft of the fourth air cylinder and is driven by the fourth air cylinder to push the side surface of the metal piece positioned at the ejector rod forward or retract backward.

Compared with the prior art, the automatic drilling machine system disclosed by the invention realizes the automation of pushing, limiting, locking and drilling of the metal piece, has high integral automation degree, can greatly reduce the labor intensity of workers, improves the processing efficiency, has higher precision, can realize the drilling of the upper surface and the lower surface of the metal piece, and is more convenient to operate.

Drawings

FIG. 1 is a perspective view of the assembly of the automatic drilling machine system of the present invention;

FIG. 2 is a perspective view of the automatic drilling machine system of the present invention with metal pieces placed thereon;

FIG. 3 is a front view of the automatic drilling machine system of the present invention;

FIG. 4 is a rear view of the automatic drilling machine system of the present invention;

FIG. 5 is a schematic illustration of the first drill and its first drill mounting assembly;

FIG. 6 is a front view of the second drilling rig and lower mounting bracket;

FIG. 7 is a perspective view of the second drilling rig and lower mounting bracket from the rear;

FIG. 8 is a schematic view of the pusher assembly;

FIG. 9 is a schematic structural view of the stop assembly;

FIG. 10 is a schematic structural view of the locking cylinder assembly;

FIG. 11 is a schematic structural view of the rotary clamping cylinder assembly;

FIG. 12 is a schematic structural view of the ram cylinder assembly;

fig. 13 is a schematic view of a connection structure between two front and rear groups of pushing assemblies.

Detailed Description

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, 2, 3 and 4, the automatic drilling machine system of the present invention mainly includes: the device comprises a transmission rail 2, a first drilling machine 11, a second drilling machine 12, a material pushing assembly 3, a first moving assembly, a second moving assembly, a third moving assembly, a fourth moving assembly, a fifth moving assembly, a limiting assembly 5, a second drilling machine 12, a second moving assembly, a third moving assembly, a fourth moving assembly, a fifth moving assembly and a third moving assembly, wherein the transmission rail 2 is arranged on a workbench 20 and used for placing a metal piece 10 and enabling the metal piece 10 to move forwards and backwards on the transmission rail 2, the first drilling machine 11 is arranged above the transmission rail 2 and used for drilling the upper surface of the metal piece 10, the second drilling machine 12 is arranged below the transmission rail 2 and used for drilling the lower surface of the metal piece 10, the material pushing assembly 3 is used for pushing the metal piece 10 to move forwards along the transmission rail 2, the first moving assembly is used for driving the material pushing assembly 3 to move forwards and backwards along the transmission rail 2, the second moving assembly is used for driving the first drilling machine 11 to move forwards and backwards and forwards, the third moving assembly is used for driving the first drilling machine 11 to move upwards and downwards, the second drilling machine 12 to move forwards and to drive the second drilling machine 12 to move forwards and to move forwards, A locking component for fixing the metal piece 10 at the drilling station, a plurality of sensors for detecting whether the metal piece 10 is on the transmission track 2, and a control electrical box with a built-in PLC (Programmable Logic Controller). The first drilling machine 11, the second drilling machine 12, the material pushing assembly 3, the first moving assembly, the second moving assembly, the third moving assembly, the fourth moving assembly, the fifth moving assembly, the limiting assembly 5, the locking assembly and the sensor are respectively connected with the control electronic box and controlled by the PLC.

The transmission rail 2 is a linear rail extending in the front-back direction, the rail is provided with a left row of rollers and a right row of rollers, and the metal piece 10 can be placed between the two rows of rollers and can move along the length direction of the transmission rail 2 under the action of thrust.

As shown in fig. 8, the pusher assembly 3 includes: a first cylinder 31, a support 32, a push block 33 and a spring 34. The supporting member 32 is lifted and lowered by the first cylinder 31, the pushing block 33 is slidably installed in front of the supporting member 32, and the spring 34 is interposed between the supporting member 32 and the pushing block 33. In this embodiment, two groups of pushing assemblies 3 are provided to push two front and rear metal members 10 simultaneously, as shown in fig. 13, the two groups of pushing assemblies 3 are arranged in tandem, an interval between the two groups of pushing assemblies 3 is greater than a length of the metal member 10, a connecting plate 35 is connected between the two groups of pushing assemblies 3, one end of the supporting member 32 is hinged to an end portion of the connecting plate 35, and the other end is connected to the pushing block 33, the connecting plate 35 is fixedly connected to a connecting member 36, and the connecting member 36 is used to be connected to the first moving assembly, so that the first moving assembly can drive the two groups of pushing assemblies 3 to advance or retreat simultaneously through the connecting member 36 and the connecting plate 35. The supporting piece 32 stretches over the conveying track 2, when the first air cylinder 31 drives the supporting piece 32 to descend, the height of the pushing block 33 corresponds to that of the metal piece 10 arranged on the conveying track 2, when the pushing assembly 3 moves forwards, the metal piece 10 is pushed to move forwards, and the arrangement of the spring 34 can play a role in buffering the pushing force. When the first cylinder 31 drives the supporting member 32 to ascend, the height of the pushing block 33 and the supporting member 32 behind the pushing block is higher than that of the metal member 10, and at this time, the pushing assembly 3 does not touch the metal member 10 even if moving back and forth.

As shown in fig. 1 and 4, the first moving assembly includes: a first guide rail 411, a first ball screw 412, a first motor 413, and a first timing wheel assembly 414. Wherein the first guide rail 411 is installed at one side of the transfer rail 2 and is parallel to the length direction of the transfer rail 2. The first ball screw 412 is parallel to the first guide rail 411, the connecting member 36 is mounted on the first guide rail 411 and is fixedly connected to a nut seat provided on the first ball screw 412, and the connecting plate 35 is also mounted on the first guide rail 411 for smooth movement. The first motor 413 is installed at a position of a rear end portion of the transfer rail 2. The first synchronizing wheel assembly 414 is composed of a synchronizing wheel fixed to an output shaft of the first motor 413, a synchronizing wheel fixed to the first ball screw 412, and a synchronizing belt, and transmits power by engaging teeth with tooth grooves of the synchronizing wheel. The first motor 413 drives the first ball screw 412 to rotate through the first synchronous wheel component 414, so as to drive the connecting piece 36, the connecting plate 35 fixed with the connecting piece and the front and rear pushing components 3 to move forwards or backwards simultaneously.

As shown in fig. 5, an upper mounting bracket 30 is fixed upward on the table 20 at a position on the middle side of the transfer rail 2, the first drilling machine 11 is mounted on a first drilling machine mounting assembly 81, the first drilling machine mounting assembly 81 is mounted on the upper mounting bracket 30 and includes a first fixing plate 811 fixedly connected to the first drilling machine 11, and the mounted first drilling machine 11 is located at a position above the transfer rail 2. The second and third moving assemblies are also mounted on the upper mounting bracket 30.

As shown in fig. 1 and 4, the second moving assembly includes: a second guide rail 421, a second ball screw 422, a second motor 423, and a second timing wheel assembly 424. The second guide rail 421 and the second ball screw 422 are parallel to the length direction of the transmission rail 2, and the first drilling machine mounting assembly 81 is mounted on the second guide rail 421 and is fixedly connected with a nut seat arranged on the second ball screw 422. The second motor 423 may be installed at a front end of the second rail 421. The second synchronizing wheel assembly 424 is composed of a synchronizing wheel fixed to the output shaft of the second motor 423, a synchronizing wheel fixed to the second ball screw 422, and a synchronizing belt. The second motor 423 drives the second ball screw 422 to rotate through the second synchronizing wheel assembly 424, so as to drive the first drilling machine mounting assembly 81 and the first drilling machine 11 to move forwards or backwards.

As shown in fig. 4 and 5, the third moving assembly is mounted on a first drill mounting assembly 81, comprising: a third guide rail 431, a third ball screw 432, a third motor 433, and a third timing wheel assembly 434. The third guide rails 431 are vertically arranged at both sides of the first drill mounting assembly 81, the third ball screw 432 is vertically arranged at the middle part of the first drill mounting assembly 81, and the first fixing plate 811 is arranged on the third guide rails 431 at both sides and is fixedly connected with the nut seat arranged on the third ball screw 432. The third motor 433 is mounted on top of the back of the first drill mounting assembly 81. The third synchronizing wheel assembly 434 is composed of a synchronizing wheel fixed on the output shaft of the third motor 433, a synchronizing wheel fixed on the third ball screw 432, and a synchronous belt. The third motor 433 drives the third ball screw 432 to rotate through the third synchronizing wheel assembly 434, so as to drive the first fixing plate 811 and the first drilling machine 11 to move upward or downward.

As shown in fig. 3, 4, 6 and 7, the lower mounting frame 40 is fixed downwards on the workbench 20 at a position on the front section side of the conveying track 2, the second drilling machine 12 is mounted on a second drilling machine mounting assembly 82, the second drilling machine mounting assembly 82 is mounted on the lower mounting frame 40 and comprises a second fixing plate 821 fixedly connected with the second drilling machine 12, the mounted second drilling machine 12 is located at a position below the conveying track 2, and of course, openings are provided at appropriate positions on the workbench 20 and the conveying track 2 so that the second drilling machine 12 can upwards penetrate through the workbench 20 and the conveying track 2 to perform drilling operation on the metal piece 10. The fourth and fifth moving assemblies are also mounted on the lower mounting bracket 40.

As shown in fig. 6 and 7, the fourth moving assembly includes: a fourth guide rail 441, a fourth ball screw 442, a fourth motor 443, and a fourth timing wheel assembly 444. The fourth guide rail 441 and the fourth ball screw 442 are parallel to the length direction of the transfer rail 2, and the second drill mounting assembly 82 is mounted on the fourth guide rail 441 and is fixedly connected with a nut seat provided on the fourth ball screw 442. The fourth motor 443 may be installed at a front end portion of the fourth guide rail 441. The fourth synchronizing wheel assembly 444 is composed of a synchronizing wheel fixed to the output shaft of the fourth motor 443, a synchronizing wheel fixed to the fourth ball screw 442, and a synchronizing belt. The fourth motor 443 drives the fourth ball screw 442 to rotate through the fourth synchronizing wheel assembly 444 so as to drive the second drilling machine mounting assembly 82 and the second drilling machine 12 to move forwards or backwards.

The fifth movement assembly is mounted on a second drill mounting assembly 82, comprising: a fifth guide rail 451, a fifth ball screw 452, a fifth motor 453, and a fifth timing wheel assembly 454. The fifth guide rails 451 are vertically disposed on both sides of the second drill mounting assembly 82 and the fifth ball screw 452 is vertically disposed in the middle of the second drill mounting assembly 82. The second fixing plate 821 is installed on the fifth guide rails 451 at both sides and is fixedly connected to a nut seat provided on the fifth ball screw 452. The fifth motor 453 is installed at the bottom of the rear surface of the second drill mounting assembly 82, and the fifth synchronizing wheel assembly 454 is composed of a synchronizing wheel fixed to an output shaft of the fifth motor 453, a synchronizing wheel fixed to the fifth ball screw 452, and a timing belt. The fifth motor 453 drives the fifth ball screw 452 to rotate through the fifth synchronizing wheel assembly 454 so as to drive the second fixing plate 821 and the second drilling machine 12 to move up or down.

In this embodiment, the limiting assemblies 5 are provided in two sets, one set is disposed at the front end of the conveying track 2, and the other set is disposed at the middle of the conveying track 2. As shown in fig. 9, each set of the stopper members 5 includes: a limiting block 51, a second cylinder 52 and a limiting mounting bracket 53. The limit mounting bracket 53 is mounted on one side of the transmission rail 2, the second cylinder 52 is mounted on the limit mounting bracket 53, and the limit block 51 is driven by the second cylinder 52 to extend or retract towards the transmission rail 2. Preferably, the rear end surface 511 of the stopper 51 may be formed into a chamfer matching the shape of the front end surface of the metal member 10. When the second cylinder 52 drives the limiting block 51 to extend out, the limiting block 51 is located slightly above the transmission rail 2, and can prevent the metal piece 10 on the transmission rail 2 behind the limiting block from moving forward; when the second cylinder 52 drives the stopper 51 to retract, the stopper 51 leaves the range of the conveying rail 2, and the metal piece 10 on the conveying rail 2 is no longer blocked by the stopper 51.

The locking assembly comprises: a locking cylinder assembly 61 for locking the side surface of the metal member 10, a rotary clamping cylinder assembly 62 for pressing the top of the metal member 10, and a jacking cylinder assembly 63 for jacking the side surface of the metal member 10.

Wherein, as shown in fig. 10, the locking cylinder assembly 61 comprises: a clamp block 611, a third cylinder 612, and a clamp mounting block 613. The clamp mounting block 613 is fixedly mounted on the table 20, and the third cylinder 612 is mounted on the clamp mounting block 613. The clamping block 611 is formed by a horizontal plate and a vertical plate to form an L-shaped structure, wherein the horizontal plate is fixed to the third cylinder 612, the vertical plate is located outside the side surface of the metal member 10, and the clamping block 611 is driven by the third cylinder 612 to move left and right. When the third cylinder 612 is retracted, the vertical plate of the clamping block 611 clamps the side of the metal piece 10 at the clamping block 611. In this embodiment, the locking cylinder assemblies 61 are provided with a plurality of groups and distributed along the length direction of the conveying track 2, and of course, the locking cylinder assemblies 61 are installed at the drilling stations of the metal piece 10 in the middle section of the conveying track 2 and used for locking the side surface of the metal piece 10 so as to facilitate the subsequent drilling process.

As shown in fig. 11, the rotary clamping cylinder assembly 62 includes a rotary clamping cylinder 621 and a pressing member 622. The pressing member 622 is mounted on the output shaft of the rotary clamping cylinder 621, and is driven by the rotary clamping cylinder 621 to rotate and press down the top of the metal member 10 at the position of the pressing member 622. In this embodiment, the rotary clamping cylinder assembly 62 is provided with a plurality of sets and is located at the drilling stations of the metal pieces 10 at the front section and the middle section of the conveying track 2.

The ejector rod cylinder assemblies 63 are provided with multiple groups and located at the drilling station of the metal part 10 at the front section of the conveying track 2, as shown in fig. 12, each group of ejector rod cylinder assemblies 63 includes a fourth cylinder 631 and an ejector rod 632, the ejector rod 632 is fixed to an output shaft of the fourth cylinder 631, and the fourth cylinder 631 drives the ejector rod 631 to push the side of the metal part 10 located at the ejector rod 632 forward or retract backward.

The number of the sensors is three along one side of the transmission track 2, and the sensors are used for detecting whether metal pieces 10 exist on the transmission track 2 at the position of the sensors or not. As shown in fig. 1, in the present embodiment, the three sensors are: a rear sensor 71 located at the rear section of the transfer rail 2, a middle sensor 73 located at the middle section of the transfer rail 2, and a front sensor 72 located at the front section of the transfer rail 2. Wherein, as shown in fig. 9, the middle sensor 73 can be arranged at one side of the position limiting component 5.

In addition, in order to ensure safe operation of the automatic drilling machine system of the present invention, as shown in fig. 1, a first front limit switch 92 and a first rear limit switch 91 are provided at the front end and the rear end of the first ball screw 412, respectively, and a first origin sensor 74 is further provided near the first rear limit switch 91. A second front limit switch 932 and a second rear limit switch 931 are respectively disposed at positions of the upper mounting bracket 30 located at the front end and the rear end of the second rail 421, and a second origin sensor 75 is further disposed near the second front limit switch 932. As shown in fig. 5, a first raising limit switch 941 and a first lowering limit switch 942 are respectively provided at upper and lower portions of a side surface of the first drill mounting assembly 81, and a third origin sensor 76 is further provided at an upper portion of the third rail 431. As shown in fig. 6, a third front limit switch 952 and a third rear limit switch 951 are respectively disposed at the front end and the rear end of the fourth guide rail 441 on the lower mounting bracket 40, and a fourth origin sensor 77 is further disposed near the third front limit switch 952. A second raising limit switch 961 and a second lowering limit switch 962 are provided at upper and lower portions of a side surface of the second drill mounting assembly 82, respectively, and a fifth origin sensor 78 is provided at a lower portion of the fifth guide rail 451.

The limit switches are micro switches or travel switches. In case that the first motor 413 drives the corresponding workpiece to move forward or move backward to the set position, and the workpiece needs to be stopped but cannot be stopped, the corresponding position of the nut seat on the first ball screw 412 contacts with the first front limit switch 92 or the first rear limit switch 91, and the first motor 413 is immediately stopped, so that the forward and backward protection is realized. And when the corresponding workpiece is driven by the second motor 423 to move forward or backward to the set position in the unlikely event that the workpiece needs to be stopped and cannot be stopped, the second front limit switch 932 or the second rear limit switch 931 is touched to immediately stop the second motor 423. And when the first drilling machine 11 is driven by the third motor 433 to ascend or descend to a set position and needs to be stopped in case of stopping, the first ascending limit switch 941 or the first descending limit switch 942 is touched to stop the third motor 433 immediately. Similarly, when the fourth motor 443 needs to stop in case of driving the corresponding workpiece forward or backward to the set position and cannot stop, the third front limit switch 952 or the third rear limit switch 951 is touched to stop the fourth motor 443 immediately. In case that the fifth motor 453 drives the second drilling machine 12 to ascend or descend to a set position, the second ascending limit switch 961 or the second descending limit switch 96 is touched to stop the fifth motor 453.

When the whole apparatus is started up each time, the first motor 413 is automatically started to drive the first ball screw 412 to rotate so as to drive the nut seat thereon and the workpiece fixed on the nut seat, such as the push rod assembly 3, to return to the position of the first origin sensor 74, and when the first origin sensor 74 outputs a signal, the corresponding electrical component in the control electrical box sends an instruction to stop the first motor 413 and then starts up, so as to drive the workpiece to move to the set position. Similarly, the second origin sensor 75 is configured to make the second motor 423 drive the first drilling machine 11, the first drilling machine mounting component 81 and the components mounted on the first drilling machine mounting component 81 to move to the set position each time the entire set is powered on. The third origin sensor 76 is used to make the third motor 433 drive the first drilling machine 11 to move to the set position every time the whole set is started. The fourth origin sensor 77 is configured to move the fourth motor 443 to move the second drilling machine 12, the second drilling machine mounting unit 82, and the unit mounted on the second drilling machine mounting unit 82 to a set position every time the entire installation is turned on. The fifth origin sensor 78 is configured to enable the fifth motor 453 to drive the second drilling machine 12 to move to the set position each time the entire set is powered on.

The work flow of drilling the metal piece 10 by using the automatic drilling machine system of the invention is as follows:

1. turning on a power supply to start up, and setting the size and the model of the metal piece 10 needing drilling;

2. at the moment, the first motor 413, the second motor 423, the third motor 433, the fourth motor 443 and the fifth motor 453 are started to return to the original point, and after the corresponding original point sensors are respectively sensed, each motor drives the corresponding ball screw to rotate, so that the nut seat on the screw and the workpiece fixed on the nut seat are driven to reach the set position;

3. placing a metal piece 10 to be drilled on the rear section of the conveying track 2, and simultaneously sensing the metal piece 10 by a rear sensor 71;

4. the first motor 413 is started again, and according to the setting, the first synchronous wheel component 414 is driven to rotate, so as to drive the first ball screw 412 to rotate, and after the first ball screw 412 rotates, the first ball screw drives the nut seat thereon and the pushing component 3 connected with the nut seat to push the metal piece 10 to move forward. At this time, the second cylinder 52 and the limiting block 51 in the limiting component 5 in the middle of the transmission track 2 are in an extending state;

5. when the metal piece 10 is pushed to abut against the limiting component 5 in the middle of the transmission track 2, the chamfer at the front end of the metal piece 10 just enters the chamfer of the rear end face 511 of the limiting block 51 of the limiting component 5, at this time, the metal piece 10 is positioned at the drilling station in the middle of the transmission track 2, meanwhile, the middle sensor 73 also outputs a signal, and the first motor 413 stops;

6. when the first motor 413 stops, an electric control element in the electric box is controlled to send an instruction according to a signal that the middle sensor 73 and the second cylinder 52 in the limiting assembly 5 in the middle of the transmission rail 2 extend to the right position, so that the third cylinder 612 in the locking cylinder assembly 61 is retracted, the clamping block 611 clamps the side surface of the metal piece 10, meanwhile, the rotary clamping cylinder 621 in the middle of the transmission rail 2 rotates to press downwards, the pressing piece 622 presses the upper surface of the metal piece 10, and the metal piece 10 is completely fixed on a drilling station in the middle of the transmission rail 2;

7. when the metal piece 10 is fixed at a drilling station in the middle of the transmission track 2 and an electrical element on a corresponding workpiece sends a signal, the first drilling machine 11 and the third motor 433 are started; meanwhile, the third motor 433 rotates to drive the third ball screw 432 to rotate through the third synchronous wheel component 434, so as to drive the first drilling machine 11 to run downwards under the guiding action of the third guide rail 431;

8. drilling begins when the first drill 11 is lowered into position to contact the upper surface of the metal piece 10. The descending depth of the first drilling machine 11 is set, and after the first drilling machine 11 reaches the set distance and drilling is completed, the third motor 433 rotates reversely, so that the first drilling machine 11 is lifted to the initial position;

9. next, if the metal part 10 needs to be drilled at other positions, the second motor 423 is started to rotate the second synchronizing wheel assembly 424, so as to rotate the second ball screw 422. The second ball screw 422 drives the first drilling machine 11 and the first drilling machine mounting component 81 fixed on the nut seat of the second ball screw 422 to move to a set position under the guiding action of the second guide rail 421;

10. when the drilling tool reaches the position above the set position of the metal piece 10, repeating the actions of the steps 7 and 8 to complete drilling;

11. after the metal piece 10 is machined at the working position of the first drilling machine 11, the limiting assembly 5, the rotary clamping cylinder assembly 62 and the locking cylinder assembly 61 in the middle of the conveying track 2 act simultaneously to return to the respective initial positions. When the groups of workpieces return to the initial positions, signals are transmitted to a control electronic box, an electrical control element in the electronic box sends a command, so that a second air cylinder 52 in the limiting assembly 5 at the front end part of the transmission rail 2 is started to extend out of the limiting block 51, and meanwhile, a first motor 413 is started to convey the metal piece 10 to a processing position where the limiting assembly 5 at the front end part of the transmission rail 2 is located, namely a drilling station at the front part of the transmission rail 2;

12. when the front end chamfer of the metal piece 10 just enters the chamfer of the rear end surface 511 of the limiting block 51 of the limiting assembly 5 at the front end of the transmission rail 2 and the front sensor 72 senses the metal piece 10, the rotary clamping cylinders 621 of the rotary clamping cylinder assemblies 62 at the front section of the transmission rail 2 rotate and press down, the pressing piece 622 presses the upper surface of the metal piece 10, meanwhile, the cylinders of the ejector rod cylinder assemblies 63 extend out to drive the ejector rods 632 fixed on the output shafts of the cylinders to eject the side surface of the metal piece 10, and finally, the metal piece 10 is fixed at the drilling station at the front part of the transmission rail 2;

13. when the actions of the workpieces are completely finished and a signal is sent to the control electric box, an electric control element in the electric box sends an instruction to start the fourth motor 443 and the second drilling machine 82;

14. after the fourth motor 443 is started, the fourth synchronizing wheel assembly 444 is driven to rotate, so that the fourth ball screw 442 is driven to rotate, and the fourth ball screw 442 drives the second drilling machine mounting assembly 82 and the second drilling machine 12 and the like fixed on the screw nut seat to move to the set positions under the guiding action of the fourth guide rail 441;

15. when the second drilling machine 12 reaches the set position, the fourth motor 443 is stopped, and simultaneously the fifth motor 453 is started to drive the fifth synchronizing wheel assembly 454 to rotate so as to enable the fifth ball screw 452 to rotate, the fifth ball screw 452 drives the second drilling machine 12 fixed on the screw nut seat to move upwards, when the second drilling machine contacts the lower surface of the metal piece 10, drilling is started, and after the drilling is finished, the fifth motor 453 rotates reversely so as to enable the second drilling machine 12 to descend to the initial position;

16. if drilling holes in other positions of the metal piece 10 is needed, repeating the actions of the steps 14 and 15;

17. after drilling is finished, the rotary clamping cylinder assembly 62 positioned at the front section of the conveying track 2, the limiting assembly 5 positioned at the front end part of the conveying track 2 and the ejector rod cylinder assembly 63 act simultaneously and return to respective initial positions. The machined metal part 10 can now be removed;

18. after the metal piece 10 is taken away and the workpiece in the step 17 returns to the initial position, the first cylinders 31 in the front and rear pushing assemblies 3 are lifted, and one end of the supporting member 32 and the pushing block 33 are pushed up;

19. at this point, a new piece of metal 10 has been placed in the feeding position, and the rear sensor 71 senses this piece of metal 10;

20. the first motor 413 is started to drive the front and the rear groups of pushing assemblies 3 to return to the initial positions;

21. when the two groups of pushing assemblies 3 reach the position, the first cylinder 31 in the assemblies is retracted, one end of the supporting member 32 and the pushing block 33 are pulled down, and then the first motor 413 is started again to drive the pushing assemblies 3 to push the metal piece 10 to reach the processing position;

22. after the metal piece 10 reaches the processing position, the processing steps are repeated to complete the drilling of the upper surface and the lower surface of the metal piece.

Therefore, the automatic drilling machine system disclosed by the invention realizes the automation of pushing, limiting, fixing, drilling and the like of the metal piece, can greatly reduce the labor intensity of workers, improves the processing efficiency, has higher precision, can realize the automatic drilling of the upper surface and the lower surface of the metal piece, and is more convenient to operate.

It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; the technical solutions described in the above embodiments can be modified or part of the technical features can be equivalently replaced by those skilled in the art; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic drilling machine system, comprising:

the conveying track (2) is arranged on the workbench (20) and used for placing the metal piece (10) and enabling the metal piece (10) to move back and forth on the conveying track;

the first drilling machine (11) is arranged above the conveying track (2) and is used for drilling the upper surface of the metal piece (10);

the second drilling machine (12) is arranged below the conveying track (2) and is used for drilling the lower surface of the metal piece (10);

the pushing assembly (3) is used for pushing the metal piece (10) to advance along the conveying track (2);

the first moving assembly is used for driving the pushing assembly (3) to move back and forth along the transmission track (2);

the second moving assembly is used for driving the first drilling machine (11) to move back and forth;

the third moving assembly is used for driving the first drilling machine (11) to move up and down;

the fourth moving assembly is used for driving the second drilling machine (12) to move back and forth;

the fifth moving assembly is used for driving the second drilling machine (12) to move up and down;

the limiting assembly (5) is used for blocking the metal piece (10) positioned at the drilling station from moving forwards;

the locking assembly is used for fixing the metal piece (10) positioned at the drilling station;

the sensor is arranged on one side of the conveying track (2) and used for detecting whether a metal piece (10) exists or not;

a control electric box internally provided with a PLC;

the first drilling machine (11), the second drilling machine (12), the material pushing assembly (3), the first moving assembly, the second moving assembly, the third moving assembly, the fourth moving assembly, the fifth moving assembly, the limiting assembly (5), the locking assembly and the sensor are respectively connected with the control electronic box and controlled by the PLC.

2. The automatic drilling machine system according to claim 1, characterized in that said pusher assembly (3) comprises: a first cylinder (31), a support (32), a push block (33) and a spring (34); the supporting piece (32) is driven by the first air cylinder (31) to lift, the push block (33) can be installed in front of the supporting piece (32) in a front-back sliding mode, and the spring (34) is clamped between the supporting piece (32) and the push block (33).

3. The automatic drilling machine system according to claim 2, characterized in that the pushing assemblies (3) are provided with a front group and a rear group, a connecting plate (35) is fixedly connected between the two groups of pushing assemblies (3), the connecting plate (35) is fixedly connected with a connecting piece (36), and the connecting piece (36) is connected with the first moving assembly.

4. The automatic drill system of claim 3, wherein the first movement assembly comprises: a first guide rail (411), a first ball screw (412), a first motor (413) and a first synchronous wheel assembly (414);

the first guide rail (411) is arranged on one side of the transmission track (2) and is parallel to the length direction of the transmission track (2); the first ball screw (412) is parallel to the first guide rail (411), and the connecting piece (36) is installed on the first guide rail (411) and is fixedly connected with a nut seat arranged on the first ball screw (412); the first synchronous wheel assembly (414) is composed of a synchronous wheel fixed on an output shaft of the first motor (413), a synchronous wheel fixed on the first ball screw (412) and a synchronous belt, and the first motor (413) drives the first ball screw (412) to rotate through the first synchronous wheel assembly (414) so as to drive the connecting piece (36) to move forwards or backwards.

5. The automatic drill system according to any one of claims 1 to 4,

the second moving assembly includes: a second guide rail (421), a second ball screw (422), a second motor (423) and a second synchronous wheel assembly (424);

the second guide rail (421) is arranged on one side above the conveying track (2) and is parallel to the length direction of the conveying track (2); the second ball screw (422) is parallel to the second guide rail (421), the first drilling machine (11) is installed on a first drilling machine installation component (81), and the first drilling machine installation component (81) is installed on the second guide rail (421) and is fixedly connected with a nut seat arranged on the second ball screw (422); the second synchronous wheel component (424) is composed of a synchronous wheel fixed on an output shaft of the second motor (423), a synchronous wheel fixed on the second ball screw (422) and a synchronous belt, and the second motor (423) drives the second ball screw (422) to rotate through the second synchronous wheel component (424) so as to drive the first drilling machine mounting component (81) to move forwards or backwards.

6. The automatic drill system of claim 5,

the third movement assembly is mounted on a first drill mounting assembly (81) and includes: a third guide rail (431), a third ball screw (432), a third motor (433) and a third synchronous wheel assembly (434);

the third guide rail (431) and the third ball screw (432) are both vertically arranged, the first drilling machine mounting assembly (81) comprises a first fixing plate (811) fixedly connected with the first drilling machine (11), and the first fixing plate (811) is mounted on the third guide rail (431) and fixedly connected with a nut seat arranged on the third ball screw (432); the third synchronous wheel assembly (434) is composed of a synchronous wheel fixed on the output shaft of the third motor (433), a synchronous wheel fixed on the third ball screw (432) and a synchronous belt, and the third motor (433) drives the third ball screw (432) to rotate through the third synchronous wheel assembly (434) so as to drive the first fixing plate (811) to move upwards or downwards.

7. The automatic drill system of any one of claims 1 to 4,

the fourth moving assembly includes: a fourth guide rail (441), a fourth ball screw (442), a fourth motor (443), and a fourth synchronizing wheel assembly (444);

the fourth guide rail (441) is arranged on one side below the conveying track (2) and is parallel to the length direction of the conveying track (2); the fourth ball screw (442) is parallel to a fourth guide rail (441), the second drilling machine (12) is installed on a second drilling machine installation component (82), and the second drilling machine installation component (82) is installed on the fourth guide rail (441) and is fixedly connected with a nut seat arranged on the fourth ball screw (442); the fourth synchronous wheel component (444) is composed of a synchronous wheel fixed on the output shaft of the fourth motor (443), a synchronous wheel fixed on the fourth ball screw (442) and a synchronous belt, and the fourth motor (443) drives the fourth ball screw (442) to rotate through the fourth synchronous wheel component (444) so as to drive the second drilling machine installation component (82) to move forwards or backwards.

8. The automatic drill system of claim 7,

the fifth movement assembly is mounted on a second drill mounting assembly (82) and includes: a fifth guide rail (451), a fifth ball screw (452), a fifth motor (453) and a fifth synchronizing wheel assembly (454);

the fifth guide rail (451) and the fifth ball screw (452) are both vertically arranged, the second drilling machine mounting assembly (82) comprises a second fixing plate (821) fixedly connected with the second drilling machine (12), and the second fixing plate (821) is mounted on the fifth guide rail (451) and fixedly connected with a nut seat arranged on the fifth ball screw (452); the fifth synchronizing wheel assembly (454) is composed of a synchronizing wheel fixed on an output shaft of the fifth motor (453), a synchronizing wheel fixed on the fifth ball screw (452), and a synchronous belt, and the fifth motor (453) drives the fifth ball screw (452) to rotate through the fifth synchronizing wheel assembly (454) so as to drive the second fixing plate (821) to move upwards or downwards.

9. The automatic drilling machine system according to any one of claims 1 to 4, characterized in that the stop assembly (5) is provided in two groups, one group being provided at the front end of the transport track (2) and the other group being provided at the middle of the transport track (2);

each group of limiting components (5) comprises: a limiting block (51), a second air cylinder (52) and a limiting mounting bracket (53); the limiting and mounting support (53) is mounted on one side of the transmission track (2), the second air cylinder (52) is mounted on the limiting and mounting support (53), and the limiting block (51) is driven by the second air cylinder (52) to extend out or retract towards the direction of the transmission track (2).

10. The automatic drilling machine system according to any one of claims 1 to 4, wherein the locking assembly comprises a locking cylinder assembly (61), a rotary clamping cylinder assembly (62) and a ram cylinder assembly (63);

locking cylinder subassembly (61) are equipped with the multiunit and are located transmission track (2) middle section, every group locking cylinder subassembly (61) include: a clamp block (611), a third cylinder (612), and a clamp mounting block (613); the clamping and mounting block (613) is fixedly mounted on the workbench (20), the third air cylinder (612) is mounted on the clamping and mounting block (613), the clamping block (611) is of an L-shaped structure formed by a horizontal plate and a vertical plate, and the horizontal plate is fixed on the third air cylinder (612) and is driven by the third air cylinder (612) to move left and right; when the third cylinder (612) is retracted, the vertical plate of the clamping block (611) clamps the side of the metal piece (10) at the clamping block (611);

the rotary clamping cylinder assemblies (62) are provided with a plurality of groups and are positioned at the front section and the middle section of the conveying track (2), and each group of rotary clamping cylinder assemblies (62) comprises a rotary clamping cylinder (621) and a pressing piece (622); the pressing piece (622) is arranged on an output shaft of the rotary clamping cylinder (621), and the rotary clamping cylinder (621) drives the pressing piece to rotate and press the top of the metal piece (10) positioned at the pressing piece (622);

the ejector rod air cylinder assemblies (63) are provided with multiple groups and located at the front section of the conveying track (2), each group of ejector rod air cylinder assemblies (63) comprises a fourth air cylinder (631) and an ejector rod (632), and the ejector rod (632) is fixed to an output shaft of the fourth air cylinder (631) and driven by the fourth air cylinder (631) to push the side face of the metal piece (10) located at the ejector rod (632) forward or retract backward.