Double-station multi-hole automatic mechanical reaming device

Abstract

The invention discloses a double-station multi-hole automatic mechanical reaming device and belongs to the technical field of reaming, the double-station multi-hole automatic mechanical reaming device comprises a rack, a base is fixedly connected to the upper side of the rack, two sets of symmetrical first supporting columns are fixedly connected to the upper side of the base, and a top plate is mounted at the upper ends of the first supporting columns; two symmetrical workpiece bearing tables are installed on the upper side of the base and located between the first supporting columns, baffles are installed on the peripheries of the workpiece bearing tables, a first reaming assembly and a second reaming assembly are installed on the top plate, and the first reaming assembly and the second reaming assembly are symmetrical. The first broaching assembly and the second broaching assembly are both aligned with the two workpiece bearing tables, a chipping recycling assembly is installed on the lower side of the base, the first broaching assembly and the second broaching assembly can release refrigerants firstly, the refrigerants make contact with workpieces to absorb heat, chippings generated during broaching are blocked by a baffle, splashing is prevented, and the chippings are recycled. And the chippings flow to the base along with the refrigerant and are collected by the chipping recovery assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of hole enlarging, and in particular relates to a double-station multi-hole automatic mechanical hole enlarging device. Background Art

[0002] The dual-station multi-hole automated mechanical hole-reaming device is mainly used to improve production efficiency. It completes the hole-reaming process of porous materials or workpieces in an automated manner to achieve fast, accurate, and batch production. The device can process two stations at the same time, improve processing efficiency, reduce labor costs, and ensure processing consistency and accuracy.

[0003] It can show excellent performance when processing plate-shaped workpieces and ring forgings, and therefore has been widely used in many industrial fields such as bearings, engineering machinery, petrochemicals, aerospace, and electric power.

[0004] However, when expanding the inner diameter, since the workpiece is usually made of metal or other materials, debris may be generated during the cutting process. These debris are easily scattered and difficult to be effectively recovered, resulting in a waste of resources. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a dual-station multi-hole automated mechanical hole expanding device, which has the advantage of recycling debris and solves the problems existing in the prior art.

[0006] The present invention is implemented as follows: a double-station multi-hole automatic mechanical hole expanding device comprises a frame, a base is fixedly connected to the upper side of the frame, two groups of symmetrical first support columns are fixedly connected to the upper side of the base, a top plate is installed on the upper end of the first support column, two symmetrical workpiece bearing platforms are installed on the upper side of the base, and the workpiece bearing platforms are both located between the first support columns; Baffles are installed around the workpiece bearing platform; Two symmetrical first hole expanding assemblies and second hole expanding assemblies are installed on the top plate, and the first hole expanding assemblies and the second hole expanding assemblies are both aligned with the two workpiece bearing platforms; A debris recovery assembly is installed on the lower side of the base.

[0007] As a preferred embodiment of the present invention, the first hole expansion assembly includes a first rotating shaft, and the first rotating shaft is installed on the top plate and is located on the left side of the top plate; The lower end of the first rotating shaft is fixedly connected to a first rotating rod, and the lower end of the first rotating rod is clamped with a first reaming head; A first shielding ring is installed on a side of the outer surface of the first rotating rod away from the first reaming head; A driving member is installed at the upper end of the first rotating shaft, and the driving member is located on the upper side of the top plate.

[0008] As a preferred embodiment of the present invention, the second hole expansion assembly includes a second rotating shaft, and the second rotating shaft is installed on the top plate and is located on the right side of the top plate; The lower end of the second rotating shaft is fixedly connected to a second rotating rod, and the lower end of the second rotating rod is clamped with a second reaming head; A second blocking ring is installed on a side of the outer surface of the second rotating rod away from the second reaming head.

[0009] As a preferred embodiment of the present invention, a first sprocket is fixedly connected to the outer surface of the first rotating shaft, a second sprocket is fixedly connected to the outer surface of the second rotating shaft, and the second sprocket and the first sprocket are both located at the lower side of the top plate; The first sprocket is connected to the second sprocket via a chain.

[0010] As a preferred embodiment of the present invention, a plurality of discharge holes are provided on the upper surface of the base, and the discharge holes are all located at the lower side of the workpiece supporting platform.

[0011] As a preferred embodiment of the present invention, the debris recovery assembly includes a collection box, the collection box is located at the lower side of the base, and the discharge hole is connected to the collection box; A pressing plate is installed in the collection box, and two sides of the pressing plate are slidably connected to the inner wall of the collection box; A first elastic airbag is installed on the lower side of the pressing plate.

[0012] As a preferred embodiment of the present invention, a first channel is provided in each of the first rotating rod and the second rotating rod, and a first flexible hose is installed between the first channel and the first elastic airbag; The outer surfaces of the first rotating rod and the second rotating rod are both provided with liquid outlet holes which can be communicated with the first channel.

[0013] As a preferred embodiment of the present invention, a first cavity is opened in the top plate, a first incomplete gear is fixedly connected to the outer surface of the first rotating shaft, and the first incomplete gear is located in the first cavity; A rack is meshed on one side of the first incomplete gear, a second elastic airbag is fixedly connected to one side of the rack, and a second flexible hose is installed between the second elastic airbag and the first elastic airbag.

[0014] As a preferred embodiment of the present invention, two symmetrical first sliding plates are slidably connected to the inner wall of the baffle, a first connecting plate is fixedly connected between the two first sliding plates, two symmetrical first springs are fixedly connected between the first sliding plate and the workpiece supporting platform, and a plurality of clearing rods are fixedly connected to the lower side of the first sliding plate, and the clearing rods are aligned with the unloading hole.

[0015] As a preferred embodiment of the present invention, the edge of the discharge hole is arranged at an inclined angle.

[0016] Compared with the prior art, the present invention has the following beneficial effects: When performing hole expansion operations on metal workpieces, first fix the two workpieces on the workpiece support table to ensure that the upper surface of the workpiece is parallel to the support table. Subsequently, the first support column guides the top plate to descend, driving the first and second hole expansion components to move downward synchronously and gradually approach the workpiece support table. During this process, the two hole expansion components begin to rotate and maintain a certain distance before contacting the workpiece, at which time the refrigerant flows out of the components. When the components contact the workpiece and begin to expand the hole, the outflowing refrigerant contacts the workpiece and absorbs the heat generated during the expansion process. The debris generated by expanding the hole is intercepted by the baffle to prevent splashing, and most of the debris falls on the surface of the workpiece or the support table. The flowing refrigerant brings these debris to the base, which is collected by the debris recovery component. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure from a first perspective of a double-station multi-hole automated mechanical hole expanding device provided by an embodiment of the present invention; Figure 2 It is a second-view stereoscopic structural schematic diagram of a dual-station multi-hole automated mechanical hole expanding device provided by an embodiment of the present invention with some baffles removed; Figure 3 The present invention provides a dual-station multi-hole automatic mechanical hole expansion device. Figure 2 Part A in the middle is a partially enlarged schematic diagram of the three-dimensional structure; Figure 4 It is a schematic diagram of the internal cross-sectional stereoscopic structure of a dual-station multi-hole automated mechanical hole expanding device provided by an embodiment of the present invention; Figure 5 The present invention provides a dual-station multi-hole automatic mechanical hole expansion device. Figure 4 Part B in the middle is a partially enlarged schematic diagram of the three-dimensional structure; Figure 6 The present invention provides a dual-station multi-hole automatic mechanical hole expansion device. Figure 4 The C part in the middle is a partially enlarged schematic diagram of the three-dimensional structure; Figure 7 It is a schematic diagram of the internal cross-sectional plan structure of a dual-station multi-hole automated mechanical hole expanding device provided by an embodiment of the present invention; Figure 8 The present invention provides a dual-station multi-hole automatic mechanical hole expansion device. Figure 7 The D part in the middle is a partial enlarged schematic diagram of the plane structure; Fig. 9 The present invention provides a dual-station multi-hole automatic mechanical hole expansion device. Figure 7 Part E in the middle is a schematic diagram of the partially enlarged planar structure.

[0018] In the figure: 1. base; 2. top plate; 3. workpiece bearing platform; 4. baffle; 5. first rotating shaft; 6. first rotating rod; 7. first reaming head; 8. first blocking ring; 9. second rotating shaft; 10. second rotating rod; 11. second reaming head; 12. second blocking ring; 13. first sprocket; 14. second sprocket; 15. chain; 16. discharge hole; 17. collecting box; 18. pressure plate; 19. first elastic airbag; 20. first channel; 21. first flexible hose; 22. liquid outlet; 23. first incomplete gear; 24. rack; 25. second elastic airbag; 26. second flexible hose; 27. first sliding plate; 28. first connecting plate; 29. ​​first spring; 30. plug clearing rod. DETAILED DESCRIPTION

[0019] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0020] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0021] See also Figures 1 to 9 , a double-station multi-hole automatic mechanical reaming device provided by an embodiment of the present invention comprises a frame, a base 1 is fixedly connected to the upper side of the frame, two groups of symmetrical first support columns are fixedly connected to the upper side of the base 1, a top plate 2 is installed on the upper end of the first support column, two symmetrical workpiece bearing platforms 3 are installed on the upper side of the base 1, and the workpiece bearing platforms 3 are both located between the first support columns; Baffles 4 are installed on all four sides of the workpiece supporting platform 3; two symmetrical first hole expanding components and second hole expanding components are installed on the top plate 2, and the first hole expanding components and the second hole expanding components are aligned with the two workpiece supporting platforms 3; a debris recovery component is installed on the lower side of the base 1.

[0022] The above scheme is adopted: during use, when it is necessary to expand the hole of the metal workpiece, first install the two workpieces on the workpiece supporting platform 3, and the upper surface of the workpiece should be kept flush with the surface of the workpiece supporting platform 3. After the workpiece is installed, the first support column drives the top plate 2 to descend synchronously. During this process, the first expanding assembly and the second expanding assembly will move synchronously with the top plate 2 and gradually approach the workpiece supporting platform 3. At this time, the first expanding assembly and the second expanding assembly will rotate and gradually contact the metal workpiece for expanding the hole. Before contacting the workpiece, when the first hole expanding component and the second hole expanding component are still a certain distance away from the workpiece, refrigerant flows out of the first hole expanding component and the second hole expanding component. When the first hole expanding component and the second hole expanding component contact the workpiece and perform hole expanding, the sprayed refrigerant will contact the workpiece, and then the refrigerant will absorb the heat generated by the workpiece during the hole expanding process. Since the first hole expanding component and the second hole expanding component will generate debris during the hole expanding process, the flying debris will be blocked by the baffle 4, and most of the debris will fall on the workpiece surface or the workpiece supporting platform 3. Therefore, during the flow of the refrigerant on the workpiece surface or the workpiece supporting platform 3, the debris on the workpiece surface or the workpiece supporting platform 3 will be brought to the base 1, and finally collected by the debris recovery component.

[0023] It should be noted that: first, the shape of the workpiece carrier 3 can be adjusted according to the shape of the workpiece to be processed. Second, if the thickness of the workpiece is not enough to keep it flush with the workpiece carrier 3, a gasket can be placed to raise the height of the workpiece so that the workpiece and the workpiece carrier 3 are kept flush. Third, the edge of the workpiece carrier 3 is treated with a certain inclination angle, which can be used for the natural flow of refrigerant to the base 1. Fourth, the first support column is an electric telescopic column.

[0024] Furthermore, the first reaming assembly includes a first rotating shaft 5, which is installed on the top plate 2 and located on the left side of the top plate 2; the lower end of the first rotating shaft 5 is fixedly connected to a first rotating rod 6, and the lower end of the first rotating rod 6 is clamped with a first reaming head 7; a first shielding ring 8 is installed on the side of the outer surface of the first rotating rod 6 away from the first reaming head 7; a driving member is installed on the upper end of the first rotating shaft 5, and the driving member is located on the upper side of the top plate 2.

[0025] Furthermore, the second reaming assembly includes a second rotating shaft 9, which is installed on the top plate 2 and located on the right side of the top plate 2; the lower end of the second rotating shaft 9 is fixedly connected to a second rotating rod 10, and the lower end of the second rotating rod 10 is clamped with a second reaming head 11; a second shielding ring 12 is installed on the side of the outer surface of the second rotating rod 10 away from the second reaming head 11.

[0026] Furthermore, a first sprocket 13 is fixedly connected to the outer surface of the first rotating shaft 5, and a second sprocket 14 is fixedly connected to the outer surface of the second rotating shaft 9. The second sprocket 14 and the first sprocket 13 are both located on the lower side of the top plate 2; the first sprocket 13 and the second sprocket 14 are connected by a chain 15.

[0027] The above scheme is adopted: during use, when it is necessary to expand the hole of the metal workpiece, the driving member drives the first rotating shaft 5 to rotate, and the first rotating shaft 5 will drive the first sprocket 13 to rotate synchronously when rotating, and then the first sprocket 13 drives the second sprocket 14 to rotate through the chain 15. Due to the connection between the second rotating shaft 9 and the second sprocket 14, when the second sprocket 14 rotates, the second rotating shaft 9 will follow the second sprocket 14 to rotate synchronously. Subsequently, the first support column descends, and the first rotating shaft 5 and the second rotating shaft 9 respectively drive the first rotating rod 6 and the second rotating rod 10 to rotate, so that the first expanding head 7 and the second expanding head 11 respectively contact and expand the metal workpieces on the two workpiece carriers 3, and debris will be generated in the process of expanding the hole. At this time, the first shielding ring 8 and the second shielding ring 12 will respectively block the debris generated in the cutting process. Similarly, the baffle 4 can also block the debris to prevent the debris from scattering everywhere.

[0028] It should be noted that: first, the first reaming head 7 and the second reaming head 11 can be replaced according to the diameter of the hole to meet the requirements of expanding different hole diameters. Second, the driving member is a motor, and the output end of the motor can be used to drive the first rotating shaft 5 to rotate.

[0029] Furthermore, a plurality of discharge holes 16 are formed on the upper surface of the base 1 , and the discharge holes 16 are all located at the lower side of the workpiece supporting platform 3 .

[0030] Furthermore, the debris recovery assembly includes a collection box 17, which is located on the lower side of the base 1, and the discharge hole 16 is connected to the collection box 17; a pressure plate 18 is installed in the collection box 17, and both sides of the pressure plate 18 are slidably connected to the inner wall of the collection box 17; a first elastic airbag 19 is installed on the lower side of the pressure plate 18.

[0031] Furthermore, a first channel 20 is provided in each of the first rotating rod 6 and the second rotating rod 10 , and a first flexible hose 21 is installed between the first channel 20 and the first elastic airbag 19 ; and a liquid outlet 22 which can communicate with the first channel 20 is provided on the outer surface of each of the first rotating rod 6 and the second rotating rod 10 .

[0032] Furthermore, a first cavity is opened in the top plate 2, and a first incomplete gear 23 is fixedly connected to the outer surface of the first rotating shaft 5, and the first incomplete gear 23 is located in the first cavity; a rack 24 is meshed on one side of the first incomplete gear 23, and a second elastic airbag 25 is fixedly connected to one side of the rack 24, and a second flexible hose 26 is installed between the second elastic airbag 25 and the first elastic airbag 19.

[0033] The above scheme is adopted: when in use, when it is necessary to recycle the debris, as the first rotating shaft 5 rotates, the first incomplete gear 23 is driven to rotate synchronously in the first cavity, and the first incomplete gear 23 will mesh with the rack 24 when rotating, thereby driving the rack 24 to move to the left, and when the rack 24 moves to the left, it will compress the second elastic airbag 25, so that the second elastic airbag 25 gradually changes from an expanded state to a compressed state. At this time, since the second elastic airbag 25 is compressed, the gas inside it will enter the first elastic airbag 19 through the second flexible hose 26, so that the first elastic airbag 19 is in an expanded state. Since the first elastic airbag 19 already has refrigerant As the gas enters the first elastic airbag 19, its refrigerant will enter the first channel 20 through the first flexible hose 21, and the refrigerant entering the first channel 20 will be sprayed onto the workpiece through the liquid outlet 22, so that the refrigerant absorbs the heat generated by the workpiece during the hole expansion process. When the workpiece generates debris during the hole expansion process, most of the debris will fall on the workpiece surface or the workpiece carrier platform 3. Therefore, the refrigerant will flow on the workpiece surface or the workpiece carrier platform 3, and the debris on the workpiece surface or the workpiece carrier platform 3 will be brought to the base 1. As the refrigerant flows, the refrigerant will carry the debris through the discharge hole 16 into the collection box 17 and fall on the pressure plate 18, so that the debris is recovered.

[0034] When the first incomplete gear 23 is no longer meshed with the rack 24, the elastic force of the second elastic airbag 25 drives the rack 24 to move in the opposite direction, and the second elastic airbag 25 gradually changes from a compressed state to an expanded state. During this process, the gas in the first elastic airbag 19 is transferred back to the second elastic airbag 25 through the second flexible hose 26 to realize gas circulation. When the first incomplete gear 23 contacts the rack 24 again, the gas in the second elastic airbag 25 is transferred back to the first elastic airbag 19. Since the first elastic airbag 19 repeatedly switches between a compressed state and an expanded state, the pressure plate 18 slides on the inner wall of the collection box 17, causing the pressure plate 18 to be in a shaking state, so that the debris is evenly laid on the pressure plate 18, thereby effectively preventing the debris from accumulating on the pressure plate 18.

[0035] It should be noted that: first, the material of the side of the second elastic airbag 25 that contacts the rack 24 is a hard material. Second, a circular hole can be opened on one side of the first elastic airbag 19, and an external hose can be connected to inject the refrigerant into the first elastic airbag 19 using a pump body, and a one-way valve is installed in the hose to control the injection and outflow of the refrigerant. Third, if the debris in the collection box 17 is to be cleared, a sliding door can be installed on one side of the collection box 17, so as to facilitate the removal of the debris in the collection box 17. Fourth, the speed of the first rotating shaft 5 driven by the driving member can be one hundred revolutions per minute, and the speed of the second rotating shaft 9 is synchronized with the first rotating shaft 5. Fifth, a rotary joint can be installed on the first rotating shaft 5 for connecting the first flexible hose 21, so that when the first rotating shaft 5 rotates, the liquid in the first flexible hose 21 can also enter the first channel 20, thereby preventing the first flexible hose 21 from being entangled on the first rotating shaft 5, and the setting of the second rotating shaft 9 is the same as above.

[0036] Furthermore, two symmetrical first sliding plates 27 are slidably connected to the inner wall of the baffle 4, a first connecting plate 28 is fixedly connected between the two first sliding plates 27, two symmetrical first springs 29 are fixedly connected between the first sliding plate 27 and the workpiece supporting platform 3, and a plurality of clearing rods 30 are fixedly connected to the lower side of the first sliding plate 27, and the clearing rods 30 are aligned with the unloading hole 30.

[0037] The above scheme is adopted: when in use, when the discharge hole 30 is blocked, the first reaming head 7 passes through the workpiece and reaches under the workpiece supporting platform 3 through the fall of the first rotating rod 6. Before this, the work of reaming the workpiece has been completed, and then the first reaming head 7 can pass through the workpiece. At this time, the first blocking ring 8 contacts the first connecting plate 28, pushing the clearing rod 30 into the discharge hole 16, clearing the blocked debris into the collection box 17, and when the electric telescopic rod rises and no longer contacts the first connecting plate 28, the first spring 29 resets, driving the clearing rod 30 and the first connecting plate 28 back to the initial position.

[0038] It should be noted that: the workpiece after hole expansion can also be taken out, and then the blocked hole can be processed. The specific adjustment can be made according to actual needs.

[0039] Furthermore, the edge of the discharge hole 30 is arranged at an inclined angle.

[0040] Working principle of the present invention: In the operation of reaming a metal workpiece, first place the two workpieces on the workpiece carrier 3 to ensure that the surface of the workpiece is parallel to the carrier 3. Subsequently, the first support column guides the top plate 2 to descend, driving the first reaming assembly and the second reaming assembly to synchronously approach the workpiece carrier 3. During this process, the two reaming assemblies begin to rotate, gradually contact the workpiece and implement reaming. Before contacting the workpiece, the two reaming assemblies will first release refrigerant. When reaming begins, the refrigerant contacts the workpiece and absorbs the heat generated during the reaming process. At the same time, the generated debris will be intercepted by the baffle 4 to prevent splashing, and most of the debris will fall on the workpiece or the carrier 3. When the refrigerant flows, the debris is brought to the base 1 and collected by the debris recovery assembly.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-station multi-hole automatic mechanical hole-reaming device, comprising a frame, a base (1) is fixedly connected to the upper side of the frame, two sets of symmetrical first support columns are fixedly connected to the upper side of the base (1), and a top plate (2) is installed on the upper end of the first support column, characterized in that: Two symmetrical workpiece bearing platforms (3) are mounted on the upper side of the base (1), and the workpiece bearing platforms (3) are both located between the first support columns; Baffles (4) are installed on all four sides of the workpiece bearing platform (3); Two symmetrical first hole expanding assemblies and second hole expanding assemblies are installed on the top plate (2), and the first hole expanding assemblies and the second hole expanding assemblies are both aligned with the two workpiece bearing platforms (3); A debris recovery assembly is installed on the lower side of the base (1).

2. A dual-station multi-hole automated mechanical hole expanding device as claimed in claim 1, characterized in that: The first hole expansion assembly comprises a first rotating shaft (5), the first rotating shaft (5) being mounted on the top plate (2) and located on the left side of the top plate (2); The lower end of the first rotating shaft (5) is fixedly connected to a first rotating rod (6), and the lower end of the first rotating rod (6) is clamped with a first reaming head (7); A first blocking ring (8) is mounted on a side of the outer surface of the first rotating rod (6) away from the first reaming head (7); A driving member is mounted on the upper end of the first rotating shaft (5), and the driving member is located on the upper side of the top plate (2).

3. A dual-station multi-hole automated mechanical hole expanding device as claimed in claim 2, characterized in that: The second hole expansion assembly comprises a second rotating shaft (9), the second rotating shaft (9) being mounted on the top plate (2) and located on the right side of the top plate (2); The lower end of the second rotating shaft (9) is fixedly connected to a second rotating rod (10), and the lower end of the second rotating rod (10) is clamped with a second reaming head (11); A second blocking ring (12) is mounted on a side of the outer surface of the second rotating rod (10) away from the second reaming head (11).

4. A dual-station multi-hole automated mechanical hole expanding device as claimed in claim 3, characterized in that: A first sprocket (13) is fixedly connected to the outer surface of the first rotating shaft (5), and a second sprocket (14) is fixedly connected to the outer surface of the second rotating shaft (9), wherein the second sprocket (14) and the first sprocket (13) are both located on the lower side of the top plate (2); The first sprocket (13) and the second sprocket (14) are connected via a chain (15).

5. A dual-station multi-hole automated mechanical hole expanding device as claimed in claim 4, characterized in that: The upper surface of the base (1) is provided with a plurality of discharge holes (16), and the discharge holes (16) are all located at the lower side of the workpiece bearing platform (3).

6. A dual-station multi-hole automated mechanical hole expanding device as claimed in claim 5, characterized in that: The debris recovery assembly comprises a collection box (17), the collection box (17) is located at the lower side of the base (1), and the discharge hole (16) is connected to the collection box (17); A pressing plate (18) is installed in the collection box (17), and two sides of the pressing plate (18) are slidably connected to the inner wall of the collection box (17); A first elastic airbag (19) is installed on the lower side of the pressing plate (18).

7. A dual-station multi-hole automated mechanical hole expanding device as claimed in claim 6, characterized in that: A first channel (20) is provided in each of the first rotating rod (6) and the second rotating rod (10), and a first flexible hose (21) is installed between the first channel (20) and the first elastic airbag (19); The first rotating rod (6) and the second rotating rod (10) are both provided on their outer surfaces with liquid outlet holes (22) that can communicate with the first channel (20).

8. A dual-station multi-hole automated mechanical hole expanding device as claimed in claim 7, characterized in that: A first cavity is provided in the top plate (2); a first incomplete gear (23) is fixedly connected to the outer surface of the first rotating shaft (5); and the first incomplete gear (23) is located in the first cavity; A rack (24) is meshed with one side of the first incomplete gear (23), a second elastic airbag (25) is fixedly connected to one side of the rack (24), and a second flexible hose (26) is installed between the second elastic airbag (25) and the first elastic airbag (19).

9. A dual-station multi-hole automated mechanical hole expanding device as claimed in claim 8, characterized in that: Two symmetrical first sliding plates (27) are slidably connected to the inner wall of the baffle (4), a first connecting plate (28) is fixedly connected between the two first sliding plates (27), two symmetrical first springs (29) are fixedly connected between the first sliding plate (27) and the workpiece supporting platform (3), and a plurality of plug clearing rods (30) are fixedly connected to the lower side of the first sliding plate (27).

10. A dual-station multi-hole automated mechanical hole expanding device as claimed in claim 9, characterized in that: The edge of the discharge hole (30) is arranged at an inclined angle.

Images