阅读说明：本技术 多工位钻孔设备 (Multi-station drilling equipment ) 是由 金晨晨 陈安 杨忠诚 徐佳 于 2021-08-26 设计创作，主要内容包括：一种多工位钻孔设备,包括机架,分别设置在机架上的不同工位的至少两台钻孔机,设置在机架上用于将工件从上料端经过不同工位后送往下料端的传动机构。其中传动机构具有在机架上设有用于工件在其上表面上滑行的承托装置,在承托装置的上表面平行于工件输送方向的两侧,至少对应于工位处设置的导向侧壁,在下料端的下游处设置的定位件；以及设置在上料端的有用于推动工件向下料端移动的顶推装置；顶推装置与定位件挤压并配合导向侧壁将工件定位在承托装置的各个工位上。由于依靠定位件、顶推装置的挤压配合导向侧壁,在进行工件输送的同时,满足加工时工件夹紧定位的要求,因而使设备的结构更简单,也简化了机械动作,提高加工效率。(The multi-station drilling equipment comprises a rack, at least two drilling machines and a transmission mechanism, wherein the at least two drilling machines are respectively arranged on different stations on the rack, and the transmission mechanism is arranged on the rack and is used for conveying workpieces to a discharging end from a feeding end through different stations. The transmission mechanism is provided with a supporting device which is arranged on the machine frame and used for sliding the workpiece on the upper surface of the supporting device, two sides of the upper surface of the supporting device, which are parallel to the conveying direction of the workpiece, at least correspond to the guide side walls arranged at the positions, and a positioning piece arranged at the downstream of the discharging end; the pushing device is arranged at the feeding end and used for pushing the workpiece to move towards the feeding end; the pushing device and the positioning piece are extruded and matched with the guide side wall to position the workpiece on each station of the supporting device. Because the side wall is guided by the extrusion fit of the positioning piece and the pushing device, the requirement of clamping and positioning the workpiece during processing is met while the workpiece is conveyed, the structure of the equipment is simpler, the mechanical action is simplified, and the processing efficiency is improved.)

1. A multi-station drilling apparatus comprising:

a frame (1);

the drilling machines (2) are arranged at different stations on the rack (1);

the transmission mechanism (5) is arranged on the rack (1), is provided with a feeding end (3) and a discharging end (4), and is used for conveying the workpiece to the discharging end (4) after passing through different stations from the feeding end (3);

the method is characterized in that:

the transmission mechanism (5) comprises:

a supporting device for sliding the workpiece on the upper surface of the rack (1) is arranged on the rack;

on both sides of the frame parallel to the workpiece conveying direction, at least corresponding to guide side walls (8) arranged at the station and protruding upwards from the upper surface of the supporting device, wherein a moving path of the workpiece is formed between the guide side walls (8);

a positioning element (9) arranged downstream of the discharge end (4); and

the pushing device (10) is arranged at the feeding end (3) and used for pushing the workpiece to move towards the discharging end (4); the pushing device (10) and the positioning piece (9) are extruded and matched with the guide side wall (8) to position the workpiece on each station of the supporting device.

2. The multi-station drilling equipment according to claim 1, wherein the guide side walls (8) are side walls facing the workpiece of two guide limit blocks (7) symmetrically arranged on both sides of the conveying direction of the workpiece.

3. A multi-station drilling apparatus according to claim 2, wherein the guide stoppers (7) on at least one side are adjustable with respect to the guide stoppers on the other side.

4. A multi-station drilling device according to claim 3, wherein the guide limiting block (7) on the adjustable side is formed with an adjusting long hole (11) with the length extending in the adjusting direction, a screw hole is formed in the supporting device at a position corresponding to the adjusting long hole (11), and an adjusting bolt penetrating through the adjusting long hole (11) is matched with the screw hole to fix the guide limiting block (7) on the supporting device in a loose and tight manner.

5. A multi-station drilling apparatus according to any one of claims 2 to 4, wherein the supporting device has supporting pads (6) symmetrically arranged on both sides of the conveying direction in the conveying direction of the workpiece; the bearing cushion block (6) is arranged on the rack (1); the guide limiting blocks (7) on two sides are respectively arranged on the bearing cushion blocks (6) on one corresponding side.

6. A multi-station drilling apparatus according to claim 5, wherein said guide stoppers (7) and said bolster blocks (6) are each made up of several partial splices of predetermined length.

7. A multi-station drilling apparatus according to claim 6, wherein the predetermined lengths of the guide stops (7) and the bolster blocks (6) are the same.

8. A multi-station drilling apparatus according to any of claims 1 to 7, wherein the ejector (10) has an ejector (12) and a feeding power device for pushing the ejector (12).

9. A multi-station drilling device according to claim 8, characterized in that at least one of said positioning member (9) and said pushing member (12) is provided with a pressure sensor, and a controller collects information output by said pressure sensor; the controller controls whether to output a starting working signal to the drilling machine (2) or not according to the fact that whether the pressure value output by the pressure sensor is larger than or equal to a preset threshold value or not.

10. A multi-station drilling device according to claim 8 or 9, wherein the feeding power device is a feeding piston cylinder (13) fixed on the frame (1), and the telescopic direction of a feeding piston rod telescopic end (15) of the feeding piston cylinder (13) is consistent with the conveying direction of the workpiece; the pushing piece (12) is fixed on one side of the feeding piston cylinder (13) which stretches out and draws back relatively.

11. A multi-station drilling apparatus according to claim 10, characterized in that the cylinder body of the feeding piston cylinder is fixed on the frame (1) on the side of the moving path of the workpiece, on the same side as the mounting position of the drilling machine (2) on the frame (1); the pushing piece (12) is fixed to the telescopic end of the feeding piston rod telescopic end (15) through a fixing piece (14) extending perpendicular to the workpiece conveying direction.

12. A multi-station drilling apparatus according to claim 11, wherein the pusher (12) is a plate-like member having a plate surface fixed to the fixture (14) perpendicular to the upper surface of the supporting device and parallel to the conveying direction of the workpiece.

13. A multi-station drilling apparatus according to any one of claims 1 to 12, wherein at least the upper edge of the guide side wall (8) corresponding to the station has a flange projecting towards the workpiece.

14. A multi-station drilling apparatus according to any one of claims 1 to 13, wherein the upper edge of the guide side wall (8) of the feeding end (3) is provided with a bevel (16) which is inclined from outside to inside and is convenient for placing a workpiece.

15. A multi-station drilling apparatus according to any of claims 1 to 14, wherein a feed opening (17) is provided at the guiding side wall (8) of the feed end (4); and a blanking power device for discharging the processed workpiece from the blanking port (17) in a direction perpendicular to the conveying and moving direction of the workpiece is arranged at the blanking port (17).

16. A multi-station drilling device according to claim 15, wherein the blanking power device is a blanking piston cylinder (18) fixed on the frame (1), and the telescopic direction of the telescopic end (19) of the blanking piston rod of the blanking piston cylinder (18) is perpendicular to the conveying direction of the workpiece; the opposite telescopic side of the blanking piston cylinder (18) pushes the workpiece to leave the upper surface of the supporting device from the blanking port (17).

17. A multi-station drilling apparatus according to any one of claims 1 to 16, wherein the drilling machine (2) is provided with a mechanism which is reciprocally adjustable in movement relative to the machine frame (1) in the direction of conveyance of the work pieces; and a mechanism which can be adjusted in a rotating way relative to the support column is arranged on the support arm of the drilling machine (2), or a mechanism which can be adjusted in a distance relative to the support column is arranged between the clamp of the drilling tool and the support arm.

Technical Field

The invention relates to a drilling device, in particular to multi-station drilling equipment.

Background

In the production process of industrial products, a phenomenon that one workpiece needs to be drilled with a plurality of different holes is often encountered. The drilling processing is carried out hole by adopting a manual mode, so that the technical requirement on workers is high, the labor intensity is high, and the problems of low processing efficiency and low precision exist.

For this purpose, the prior art already proposes a technical concept of providing a plurality of drilling stations. For example, the multi-station drilling machine disclosed in chinese patent document CN103568140A includes a rotary table for transferring workpieces between different stations, six clamping mechanisms are uniformly arranged on the periphery of the upper surface of the rotary table in the circumferential direction, and each clamping mechanism is provided with a clamping mechanism and a loading mechanism cooperating with a loading cam. In the prior art, during work, workpieces to be machined need to be loaded into each corresponding loading mechanism one by one, and the loaded workpieces need to be clamped one by one. Since each workpiece needs to be independently loaded and clamped, the prior art needs a complex set of mechanical structures to complete the complicated actions, that is, the mechanism for realizing the corresponding actions is too complex.

Disclosure of Invention

The invention aims to solve the technical problems of complex structure and complicated mechanical action in the prior art. Thereby providing the multi-station drilling equipment with simple structure.

In order to solve the technical problem, the invention provides multi-station drilling equipment, which comprises a rack; at least two drilling machines respectively arranged on different stations on the frame; the transmission mechanism is arranged on the rack, is provided with a feeding end and a discharging end, and is used for conveying workpieces to the discharging end after passing through different stations from the feeding end; wherein the transmission mechanism has: a supporting device for sliding the workpiece on the upper surface of the rack is arranged on the rack; the two sides of the rack parallel to the workpiece conveying direction at least correspond to guide side walls which are arranged at the station and protrude upwards from the upper surface of the supporting device; a locating member disposed downstream of the discharge end; the pushing device is arranged at the feeding end and used for pushing the workpiece to move towards the discharging end; and a moving path of the workpiece is formed between the guide side walls, and the pushing device and the positioning piece are extruded and matched with the guide side walls to position the workpiece on each station of the bearing device.

Furthermore, the guide side walls are side walls facing one side of the workpiece, and the two guide limiting blocks are symmetrically arranged on two sides of the conveying direction of the workpiece in the conveying direction.

Furthermore, the guiding limit block on at least one side can be adjustable relative to the guiding limit block on the other side.

Furthermore, an adjusting long hole with the length extending in the adjusting direction is formed in the guide limiting block on one adjustable side, a screw hole is formed in the supporting device at a position corresponding to the adjusting long hole, and an adjusting bolt penetrating through the adjusting long hole is matched with the screw hole to fix the guide limiting block on the supporting device in an elastic mode.

Furthermore, the supporting device is provided with supporting cushion blocks which are symmetrically arranged on two sides of the conveying direction of the workpiece in the conveying direction; the bearing cushion block is arranged on the rack; the two sides of the guide limiting block are respectively arranged on the bearing cushion block on the corresponding side.

Furthermore, the guide limiting block and the bearing cushion block are respectively formed by splicing a plurality of sections of parts with preset lengths.

Furthermore, the preset lengths of the guide limiting block and the bearing cushion block are the same.

Furthermore, the pushing device is provided with a pushing piece and a feeding power device for pushing the pushing piece.

Furthermore, at least one of the positioning part and the pushing part is provided with a pressure sensor, and a controller acquires information output by the pressure sensor; and the controller determines whether to output a starting working signal to the drilling machine or not according to whether the pressure value output by the pressure sensor is greater than or equal to a preset threshold value or not.

Furthermore, the feeding power device is a feeding piston cylinder fixed on the rack, and the telescopic direction of a piston rod of the feeding piston cylinder is consistent with the conveying direction of the workpiece; the pushing piece is fixed on one side of the feeding piston cylinder, which is relatively telescopic.

Further, a cylinder body of the feeding piston cylinder is fixed on the rack on one side of the moving path of the workpiece and is positioned on the same side of the rack as the installation position of the drilling machine; the pushing member is fixed to the telescopic end of the piston rod by a fixing member extending perpendicularly to the workpiece conveying direction.

Further, the pushing member is a plate-shaped member, and a plate surface of the pushing member is perpendicular to the upper surface of the supporting device and is fixed to the fixing member in parallel to the conveying direction of the workpiece.

Further, at least an upper edge of the guide side wall corresponding to the station has a flange projecting toward the work.

Furthermore, the upper edge of the guide side wall of the feeding end is provided with an inclined surface which is inclined from the outside to the inside downwards and is convenient for the workpiece to be placed,

furthermore, a feed opening is formed in the guide side wall of the feeding end; and a discharging power device for discharging the processed workpiece from the discharging opening in a direction perpendicular to the conveying and moving direction of the workpiece is arranged at the discharging opening.

Furthermore, the blanking power device is a blanking piston cylinder fixed on the rack, and the telescopic direction of a piston rod of the blanking piston cylinder is vertical to the conveying direction of the workpiece; and one side of the blanking piston cylinder, which is relatively telescopic, pushes the workpiece to leave the upper surface of the supporting device from the blanking port.

Further, the drilling machine is provided with a mechanism which can reciprocate and move along the conveying direction of the workpiece relative to the rack; and a mechanism which can be adjusted in a rotating way relative to the support column is arranged on the support arm of the drilling machine, or a mechanism which can be adjusted in a distance relative to the support column is arranged between the clamp of the drilling tool and the support arm.

The technical scheme of the invention has the following advantages:

1. the invention provides a multi-station drilling device, which is characterized in that a pair of guide side walls arranged on the upper surface of a supporting device on a rack at least corresponding to a station in parallel are matched with a positioning piece arranged at the discharging end of the upper surface of the supporting device and a pushing device arranged at the charging end, when a workpiece is conveyed, the positioning of the positioning piece is also relied before discharging, the guide side walls limit the transverse direction and the rotation of the workpiece, and the pushing transmission of the pushing device on each workpiece on the upper surface of the supporting device caused by pushing the workpiece is realized, so that the workpiece to be processed is clamped and positioned on a preset station. The requirement of clamping and positioning the workpiece during processing is ensured. Meanwhile, the workpiece does not need to be clamped and positioned at each station respectively, and is not needed to be transferred among stations after being clamped respectively. The conveying of the workpiece between each station is completed by blanking the processed workpiece by the blanking end, further pushing the workpiece to be processed by the pushing device and simultaneously carrying out new clamping and positioning. Therefore, the requirement of clamping and positioning the workpiece during machining is met, the structure of the equipment is simpler, the mechanical action is simplified, and the machining efficiency is improved.

2. The distance between the opposite guide side walls is adjustable, so that the device can be suitable for the processing requirements of different workpieces, and the universality of the device is improved.

3. The guide limiting block attached to the guide side wall and the bearing cushion block supporting the guide limiting block are respectively formed by splicing a plurality of sections of parts with preset lengths, and therefore flexible increase and decrease are facilitated through splicing and dismounting when the number of workers changes.

4. The supporting device is provided with supporting cushion blocks which are symmetrically arranged on two sides of the conveying direction along the conveying direction of the workpiece; the bearing cushion block is arranged on the machine frame. The groove formed between the two bearing cushion blocks enables an empty space to be formed under the workpiece, and the space can avoid complex structures of the workpiece protruding downwards.

5. The feeding power device adopts the piston cylinder without an additional transmission mechanism, so that the structure is simple, the feeding piston cylinder is arranged on one side of a moving path of a workpiece formed by the guide side wall, and the pushing piece is fixed on the telescopic end of the piston rod through a fixing piece which extends perpendicular to the conveying direction of the workpiece, so that the length of the device is reduced, and the structure is more compact.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below.

FIG. 1 is a perspective view of one embodiment of the multi-station drilling apparatus of the present invention;

FIG. 2 is a schematic illustration of the initial charge of the embodiment of FIG. 1;

FIG. 3 is a schematic view of the embodiment of FIG. 1 showing the pusher conveying a workpiece;

FIG. 4 is a schematic view of the pushing device shown in FIG. 3 driving the pushing member to reset and adding a new workpiece;

FIG. 5 is a schematic view illustrating a row of front and rear abutting positioning members and an ejector of the embodiment shown in FIG. 1 forming a pressing position;

FIG. 6 is a schematic view of the state shown in FIG. 5, after a round of machining is completed, the pushing member is reset, and the telescopic end of the discharging piston rod of the discharging power device pushes the machined workpiece to move out of the discharging opening;

fig. 7 is a schematic view showing that a new workpiece is added after the discharging in the state shown in fig. 6 is completed.

Description of reference numerals:

1-a frame, 2-a drilling machine, 3-a feeding end, 4-a discharging end, 5-a transmission mechanism, 6-a supporting cushion block, 7-a guide limiting block, 8-a guide side wall, 9-a positioning piece, 10-a pushing device, 11-an adjusting long hole, 12-a pushing piece, 13-a feeding piston cylinder, 14-a fixing piece, 15-a feeding piston rod telescopic end, 16-an inclined plane, 17-a discharging opening, 18-a discharging piston cylinder and 19-a discharging piston rod telescopic end.

Detailed Description

The technical scheme of the invention is clearly and completely described in the following with reference to the accompanying drawings.

As shown in fig. 1, the two-station embodiment of the multi-station drilling equipment of the present invention includes a frame 1, at least two drilling machines 2 respectively disposed at different stations on the frame 1; the transmission mechanism is arranged on the frame 1, is provided with a feeding end 3 and a discharging end 4, and is used for conveying workpieces to the discharging end 4 after passing through different stations from the feeding end 3. The transmission mechanism 5 is provided with a pair of supporting cushion blocks 6 which are fixedly arranged on the frame 1 and used as supporting devices for sliding the workpiece on the upper surface; the pair of bolster blocks 6 are symmetrically arranged on both sides in the conveying direction of the workpiece. The upper surfaces of the bearing cushion blocks 6 on the two sides are respectively provided with a guide limiting block 7 in a direction parallel to the conveying direction of the workpiece, the side walls of the guide limiting blocks 7 on the two sides, which face one side of the workpiece, form guide side walls 8, and the pair of guide side walls 8 form a moving path of the workpiece. The transmission mechanism 5 is also provided with a positioning member 9 arranged at the downstream of the blanking end 4 of the moving path of the workpiece; and the pushing device 10 is arranged at the feeding end 3 and used for pushing the workpiece to move towards the discharging end 4. The pushing device 10 pushes the workpiece to the positioning part 9, and the workpiece is positioned on the upper surface of each station of the bearing cushion block 6 by matching with the guide side wall 8. The positioning part 9 is provided with a pressure sensor (not shown in the figure), and a controller (not shown in the figure) collects information output by the pressure sensor; the controller controls whether to output a starting working signal to the drilling machine 2 or not according to whether the pressure value output by the pressure sensor is larger than or equal to a preset threshold value or not. In this embodiment, a width adjusting mechanism is arranged between the guide limiting block 7 and the support cushion block 6, the width adjusting mechanism is an adjusting long hole 11 formed in one side of the guide limiting block 7 and extending in the adjusting direction, a screw hole (not shown in the figure) is formed in the support cushion block 6 at a position corresponding to the adjusting long hole 11, and an adjusting bolt (not shown in the figure) penetrating through the adjusting long hole 11 is matched with the screw hole to fix the guide limiting block 7 on the support cushion block 6 in an elastic manner. Therefore, the guide limit block 7 on one side can be adjusted relative to the guide limit block on the other side. In this embodiment, the guiding stopper 7 and the bearer spacer 6 are respectively formed by splicing a plurality of sections of the same predetermined length.

The pushing device 10 of the present embodiment has a pushing member 12 and a feeding piston cylinder 13 as a feeding power device for pushing the pushing member 12. The feeding piston cylinder 13 is fixed on the frame 1 on one side of the moving path of the workpiece, and the side is on the same side of the moving path of the workpiece formed by the guide limiting block 7 as the installation position of the drilling machine 2 on the frame 1. The telescopic direction of a feeding piston rod of the feeding piston cylinder 13 is consistent with the conveying direction of the workpiece; the ejector 12 is fixed to a telescopic end 15 of a loading piston rod of the loading piston cylinder 13 by a fixing element 14 extending perpendicularly to the workpiece conveying direction. In this embodiment, the pushing member 12 is a plate-shaped member, and its plate surface is fixed to the fixing member 14 perpendicular to the upper surface of the bolster block 6 and parallel to the conveying direction of the workpiece. The upper edge of the guide side wall 8 of the feeding end 3 is provided with an inclined surface 16 which is inclined from outside to inside and is convenient for placing a workpiece, so that the workpiece can be conveniently placed into the feeding end 3. A feed opening 17 is formed in the guide side wall 8 of the feed end 4; a discharging power device for discharging the processed workpiece from the discharging port 17 in a direction perpendicular to the conveying movement direction of the workpiece is arranged at the discharging port 17. In this embodiment, the blanking power device is a blanking piston cylinder 18 fixed on the frame 1, and the extension direction of a blanking piston rod of the blanking piston cylinder 18 is perpendicular to the conveying direction of the workpiece; the telescopic end 19 of the blanking piston rod pushes the workpiece to leave the guide side wall 8 from the blanking port 17 to form a moving path of the workpiece.

In operation, workpieces are placed one by one from the loading end 3 onto the bolster block 6, see fig. 2. The upper edges of the guide side walls 8 of the guide limit blocks 7 on two sides are provided with inclined planes 16 which incline from outside to top to inside, and a guide structure which is large at the top and small at the bottom and is convenient for placing a workpiece is formed together. The inserted workpiece is pushed by the feeding piston rod of the feeding piston cylinder 13 of the pushing device 10 to push the pushing piece 12, and further the workpiece is pushed to move towards the blanking end 4, as shown in fig. 3. The initially inserted workpiece is not in contact with the positioning element 9 of the blanking end 4, so that the workpiece is not pressed between the pushing element 12 and the positioning element 9. Referring to fig. 4, after the workpieces are placed one by one, until a plurality of workpieces at the front ends of the workpieces arranged on the moving path of the workpieces abut against the positioning member 9, the workpieces at the rear ends are extruded by the pushing member 12, and at this time, one workpiece is positioned at a predetermined first station and clamped by the adjacent workpieces in the front and rear direction, and the left and right of the workpiece are limited by the guide side wall 8 and cannot move left and right or rotate under the rotating force of the drill, see fig. 5. At this time, the pressure sensor arranged in the positioning member 9 senses pressure and transmits the pressure value to the controller, and when the pressure value transmitted by the controller is greater than or equal to a preset threshold value compared with the preset threshold value, the controller sends a starting signal to the drilling machine 2 on each station to start the drilling machine 2 on the first station and the second station to process the workpiece. After the processing of the first station is completed, the feeding piston rod of the feeding piston cylinder 13 drives the pushing piece 12 to move towards the direction far away from the positioning piece 9, and then the telescopic end 19 of the feeding piston rod of the feeding piston cylinder 18, which is arranged at the feeding end 4 and used as the feeding power device, pushes the workpiece, which is abutted against the positioning piece 9, to leave the guide side wall 8 to form the moving path of the workpiece, as shown in fig. 6. At this point, the workpiece is again placed on the bolster 6 at the loading end 3, see fig. 7. The feeding piston rod of the feeding piston cylinder 13 pushes the ejector 12 again, and the workpiece is pushed by the ejector 12 to move towards the blanking end 4. In this process, the work piece machined at the first station is moved out of the first station, and the next adjacent one of the work pieces is moved into the first station. After the clamping process as described above, the workpiece being positioned at the first station is machined. After the processing is finished, the processes of blanking and feeding are repeated. When the feeding piston rod of the feeding piston cylinder 13 pushes the pushing piece 12 again, and the pushing piece 12 pushes the workpiece to move towards the blanking end 4, a first workpiece to be machined moves into the second station, a second workpiece to be machined moves out of the first station, and a workpiece adjacent to the second workpiece to be machined later moves into the first station. After that, the two drilling machines 2 on the first and second stations are started to drill different holes on the workpiece on the corresponding stations at the same time by the compaction induction. The above process is then repeated, and in the following process both drilling machines 2 at the first and second stations are activated simultaneously. Since three workpieces were not completely machined before the clamping of the workpieces to be machined at the first station in the preceding machining process, these workpieces can be returned to the loading end 3 and machined in the subsequent machining process.

The above apparatus is provided with the drill 2 spaced by one workpiece, but the number of workpieces may be set at different intervals such as two, three, etc., depending on the size of the workpiece. Of course, when the workpiece is large, the workpiece may not be provided with a space. In addition, in the above embodiment, the pushing mechanism adopts a mode of conveying first and then clamping, that is, the workpiece is pushed out from the feeding end 3 and clamped. Of course, a mode of clamping first and then conveying can be adopted, that is, clamping is firstly carried out, and after the workpiece on the processing position is processed, the workpiece at the feeding end 3 is pushed out.

In an alternative embodiment of the above embodiment, a flange projecting toward the workpiece may be provided at least at the upper edge of the guide side wall 8 corresponding to the station. The projecting dimension of the flange is limited to not interfere with the drilling operation.

In an alternative to the above described embodiment, the sequence of bolster blocks 6 could be replaced with a pattern corresponding only to the discontinuities provided at each station. So that the guide side wall 8 is provided only in correspondence of said station.

In an alternative embodiment of the above embodiment, the telescopic end 15 of the feeding piston rod may be fixed on the frame 1, and the feeding piston cylinder 13 is connected to the fixing member 14 or the pushing member 12.

In an alternative implementation manner of the above embodiment, the width adjustment mechanism of the guide limiting block 7 may also be replaced by that the adjustment long hole 11 is disposed on the supporting device, a circular through hole is disposed on the guide limiting block 7, the adjustment bolt passes through the circular through hole from the adjustment long hole 11, and a nut is screwed on the bolt at the upper end to achieve the elastic connection.

In another alternative implementation manner of the above embodiment, the width adjustment mechanism of the guide limiting block 7 may also replace an adjustment mechanism of the long hole matching with the sliding pin with an adjustment mechanism of the sliding rail matching with the jackscrew. For example, the slide rail is fixed on the supporting device, and the jackscrew is screwed in a screw hole formed on the guide limiting block 7 and communicated with the slide rail.

Further, the drilling machine 2 is provided with a mechanism which can perform reciprocating adjustment movement along the conveying direction of the workpiece relative to the frame 1; and a mechanism which can be adjusted in a rotating way relative to the support column is arranged on the support arm of the drilling machine 2, or a mechanism which can be adjusted in a distance relative to the support column is arranged between the clamp of the drilling tool and the support arm.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. 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. And obvious variations or modifications therefrom are intended to be within the scope of the invention.