Reverse dimple hole machining equipment

Abstract

The invention relates to the technical field of machining equipment, and discloses reverse dimpling hole machining equipment which comprises a reverse dimpling gun, a dimpling tool bit and a clamp for clamping a workpiece, the clamp is installed on a workbench, and the reverse dimpling hole machining equipment further comprises a driving mechanism for driving the dimpling tool bit and the reverse dimpling gun to move in the same direction; the driving mechanism comprises a mounting box driving assembly, and the driving assembly comprises a first tooth row, a second tooth row, a first gear, a second gear and a connecting shaft; a mounting seat for mounting a connecting shaft is arranged on the inner bottom wall of the mounting box, and one end of the connecting shaft penetrates through the side wall of the mounting box and is provided with a hand-cranking wheel; one end of the first tooth row is provided with a bearing seat for mounting a reverse dimple gun, and one end of the second tooth row is provided with a mounting plate for mounting a dimple tool bit; the dimple tool bit and the gun barrel of the reverse dimple gun are coaxially arranged; and the dimple tool bit can be quickly mounted on the gun barrel of the reverse dimple gun, so that the working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing equipment, and in particular relates to a countersinking hole processing equipment. Background Art

[0002] In mechanical manufacturing, there are many screw holes that need to be processed to install nuts. These holes are all on the inside of the parts. Due to space limitations, the machine tool cannot be processed from the front of the hole. The nut hole can only be made by reverse countersinking through the small hole. At present, when performing reverse countersinking, a reverse countersinking gun is usually used for processing. When using the reverse countersinking gun, the gun rod needs to be inserted from the outside of the hole, and then the countersinking head is installed on the end of the gun rod on the inside of the hole. Finally, the gun rod is pulled in the opposite direction to perform the countersinking process. However, this tool still has certain disadvantages. For example, when performing reverse countersinking on some pipe fittings, due to space limitations, it is difficult to manually install the countersinking head on the gun rod from the inside of the hole. This is very time-consuming during operation and greatly reduces work efficiency.

[0003] In view of this, the inventors conducted in-depth research on the above-mentioned defects in the prior art, and thus came up with this case. Summary of the Invention

[0004] The purpose of the present invention is to provide a countersinking hole processing device, which can quickly install a countersinking cutter head on the gun barrel of a countersinking gun, thereby improving work efficiency.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows:

[0006] A countersinking hole processing device, comprising a countersinking gun, a countersinking cutter head and a fixture for clamping a workpiece, wherein the fixture is mounted on a workbench and further comprises a driving mechanism for driving the countersinking cutter head and the countersinking gun to move in the same direction; the driving mechanism comprises a mounting box movably mounted on the workbench and a driving assembly located in the mounting box, the driving assembly comprising a first tooth row for driving the countersinking gun to move, a second tooth row for driving the countersinking cutter head to move, a first gear meshed with the first tooth row, a second gear meshed with the second tooth row, and a bearing connecting the first gear and the second gear. The connecting shaft of the gear; a mounting seat for installing the connecting shaft is provided on the inner bottom wall of the mounting box, one end of the connecting shaft passes through the side wall of the mounting box, and a hand wheel is provided at the end; one end of the first tooth row is provided with a bearing seat for installing the counter countersinking gun, and one end of the second tooth row is provided with a mounting plate for installing the countersinking cutter head; the countersinking cutter head and the gun barrel of the countersinking gun are coaxially arranged; the countersinking cutter head is rotatably mounted on the mounting plate, the countersinking gun is slidably mounted on the bearing seat, and the countersinking gun can slide along the axial direction of the countersinking cutter head.

[0007] Furthermore, the workbench is provided with an adjustment screw that drives the mounting box to move along the axis of the countersinking cutter head. A first slider is formed at the bottom of the mounting box, and a first slot is formed on the workbench to slidably engage with the first slider. The adjustment screw is rotatably mounted on the workbench and threadedly connected to the first slider. A knob is provided at one end of the adjustment screw. The adjustment screw can be used to adjust the movement of the countersinking cutter head in the Y-axis direction, making it easier for the countersinking cutter head to enter the interior of the workpiece.

[0008] Furthermore, the fixture is movably mounted on the workbench; a cylinder is provided on the workbench to drive the fixture up and down; a support plate is formed at the bottom of the workbench, and the cylinder body of the cylinder is fixedly mounted at the bottom of the support plate; the fixture includes two symmetrically arranged clamping units, a drive unit that drives the two clamping units toward or away from each other, and a mounting platform for mounting the clamping units and the drive unit; the piston rod of the cylinder is fixedly connected to the bottom of the mounting platform; and the bottom of the mounting platform is also provided with two limiting guide rods that are slidably connected to the support plate. The cylinder can drive the fixture to move in the Z-axis direction, so that the workpiece can be aligned with the countersinking tool head in the Z-axis direction.

[0009] Furthermore, the clamping unit includes a clamping plate and a plurality of clamping rollers. The clamping plate is formed with a mounting groove for the clamping rollers. The clamping rollers are rotatably mounted on the mounting groove and are arranged at equal intervals along the extension direction of the mounting groove. The diameter of the clamping rollers gradually decreases from the ends to the center. When placing a workpiece, the clamping rollers can more easily push the workpiece into the appropriate position.

[0010] Furthermore, the mounting platform is formed with a through slot extending in a vertical direction and mounting slides on both sides of the through slot; the clamping plate is formed with a drive block passing through the through slot and a mounting slider slidably engaged with the mounting slides; the drive unit includes a bidirectional screw and a drive motor that drives the bidirectional screw in forward and reverse rotation; the bidirectional screw is rotatably mounted on the mounting platform in a vertical direction; the bidirectional screw is threadably engaged with the drive block. The bidirectional screw can be used to quickly drive the two clamping units toward or away from each other.

[0011] Further, a mounting hole is formed on the mounting plate for installing the countersinking cutter head, and one end of the countersinking cutter head close to the mounting plate is provided with a rotating block that rotatably cooperates with the mounting hole, and the rotating block can rotate synchronously with the countersinking cutter head; one end of the rotating block is formed with a connecting head connected to the countersinking cutter head, and a connecting hole is formed on the countersinking cutter head that cooperates with the connecting head, and the depth of the connecting hole is greater than the length of the connecting head; axial movement can be performed between the connecting head and the connecting hole; and a limiting plate is formed on the connecting head; a limiting block is also formed on one end of the countersinking cutter head close to the mounting plate, and a plurality of limiting slide grooves that can cooperate with the limiting block are formed on the mounting plate, and the limiting slide grooves are arc-shaped; a connecting threaded hole is formed on the side of the countersinking cutter head away from the mounting plate, and a connecting threaded column that can cooperate with the connecting threaded hole is formed on the gun barrel end of the countersinking gun. The cooperation of the limiting block and the limiting slide groove can prevent the countersinking gun and the countersinking cutter head from rotating in the same direction when the countersinking gun and the countersinking cutter head are connected or separated.

[0012] Furthermore, the rotating block is formed with an annular groove, within which are located a plurality of ratchet teeth arranged in an annular array; the mounting hole is formed with an annular cavity, within which are hingedly located a plurality of pawls that engage with the ratchet teeth. The engagement of the ratchet teeth and pawls allows for a more rapid separation of the countersinking gun and the countersinking cutter head.

[0013] Furthermore, a mounting block is provided between the mounting plate and the second tooth row, the mounting block and the second tooth row being connected by bolts; a movable groove is formed on the mounting block, and a limiting slide rod is provided in the movable groove; a movable block is formed on the mounting plate to slidably engage with the movable groove, and a limiting slide hole is formed on the movable block to slidably engage with the limiting slide rod; and a resisting spring is also sleeved on the limiting slide rod. After the counter-countersinking gun is separated from the countersinking cutter head, the resisting spring can quickly allow the countersinking cutter head to withdraw from the countersinking hole.

[0014] Furthermore, the support base is formed with a guide slot extending along the axis of the countersinking tool head. A slide seat slides within the guide slot, and the countersinking gun is mounted on the slide seat. A universal roller is also provided at the bottom of the support base. The cooperation between the guide slot and the slide seat ensures greater stability when the countersinking gun moves along the Y-axis.

[0015] Furthermore, the mounting box is further provided with a first support base for supporting the first gear row and a second support base for supporting the second gear row. First limiting guide grooves that slidably engage with the first support base are formed on both sides of the first gear row, and second limiting guide grooves that slidably engage with the second support base are formed on both sides of the second gear row. The first and second support bases ensure smoother movement of the first and second gear rows.

[0016] After adopting the above structure, the present invention relates to a reverse countersinking hole processing equipment. Compared with the prior art, this case arranges the countersinking cutter head and the gun barrel of the reverse countersinking gun coaxially, and can move in the same direction under the action of the driving component. When performing the reverse countersinking hole operation, the countersinking cutter head and the reverse countersinking gun are driven to move simultaneously by the driving component. It is only necessary to observe the relationship between the gun barrel of the reverse countersinking gun and the processing position of the workpiece. When the gun barrel of the reverse countersinking gun is aligned with the processing position of the workpiece, it is proved that the countersinking cutter head is aligned with the processing position. At this time, it is only necessary to continue moving the reverse countersinking gun toward the workpiece so that the gun barrel is inserted into the processing hole to connect the countersinking cutter head and the gun barrel, and then reverse countersinking can be performed. This operation can quickly and conveniently install and connect the countersinking cutter head and the gun barrel of the reverse countersinking gun, greatly improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a structural schematic diagram of another angle of the present invention;

[0020] Figure 3 Schematic diagram of the structure of the driving mechanism of the present invention;

[0021] Figure 4 Schematic diagram of the internal structure of the installation box in the present invention;

[0022] Figure 5 for Figure 4 Schematic diagram of the local enlarged structure at A in the middle;

[0023] Figure 6 It is a structural schematic diagram of the mounting plate in the present invention;

[0024] Figure 7 for Figure 6 Schematic diagram of the decomposition structure;

[0025] Figure 8 for Figure 6 Schematic diagram of the local enlarged structure at B in the middle;

[0026] Figure 9 for Figure 7 Schematic diagram of the local enlarged structure at C in the middle;

[0027] Figure 10 for Figure 7 Schematic diagram of the structure from another angle;

[0028] Figure 11 A schematic diagram of the structure of the connection between the countersinking cutter head and the rotating block in the present invention;

[0029] Figure 12 for Figure 11 Schematic diagram of the structure from another angle;

[0030] Figure 13 for Figure 11 Schematic cross-section diagram;

[0031] Figure 14 It is a structural schematic diagram of the rotating block in the present invention;

[0032] Figure 15 Schematic diagram of the structure of the countersinking cutter head in the present invention;

[0033] Figure 16 Schematic diagram of the structure of the clamping unit in the present invention.

[0034] The main component symbols are described as follows: countersinking gun 1, connecting threaded column 11, countersinking cutter head 2, rotating block 21, connecting head 211, limiting plate 2111, connecting hole 212, annular groove 213, ratchet 2131, limiting block 22, connecting threaded hole 23, workpiece 3, fixture 4, clamping unit 41, clamping plate 411, clamping groove 4111, driving block 4112, mounting slide 4113, clamping roller 412, driving unit 42, bidirectional screw 421, driving motor 422, mounting table 43, limiting guide rod 431, through groove 432, mounting slide 433, workbench 5, bearing Carrying plate 51, mounting box 6, mounting seat 61, first slider 62, first support seat 63, second support seat 64, drive assembly 7, first gear row 71, second gear row 72, first gear 73, second gear 74, connecting shaft 75, hand wheel 751, bearing seat 76, guide slide 761, slide 762, universal roller 763, mounting plate 77, mounting hole 771, annular cavity 7711, pawl 7712, limiting slide 772, movable block 773, mounting block 78, movable groove 781, limiting slide rod 782, top spring 79, adjusting screw 8, knob 81, cylinder 9. DETAILED DESCRIPTION

[0035] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that in the drawings or descriptions, similar or identical parts are numbered the same. Implementations not shown or described in the drawings are forms known to those of ordinary skill in the art. In addition, directional terms mentioned in the embodiments, such as "upper," "lower," "top," "bottom," "left," "right," "front," and "back," are merely references to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0036] like Figures 1 to 16As shown, it is a counter-countersinking hole processing equipment involved in the present invention, including a counter-countersinking gun 1, a counter-countersinking cutter head 2 and a fixture 4 for clamping a workpiece 3, the fixture 4 is installed on a workbench 5, and a driving mechanism for driving the counter-countersinking cutter head 2 and the counter-countersinking gun 1 to move in the same direction is provided on the workbench 5; the driving mechanism includes a mounting box 6 movably mounted on the workbench 5 and a driving assembly 7 located in the mounting box 6, the driving assembly 7 includes a first tooth row 71 for driving the counter-countersinking gun 1 to move, a second tooth row 72 for driving the counter-countersinking cutter head 2 to move, a first gear 73 meshing with the first tooth row 71, a second gear 74 meshing with the second tooth row 72, and a connecting shaft 75 that carries and connects the first gear 73 and the second gear 74; a mounting seat 61 for mounting the connecting shaft 75 is provided on the inner bottom wall of the mounting box 6, one end of the connecting shaft 75 passes through the side wall of the mounting box 6, and a hand-cranked wheel 751 is provided at this end; one end of the first tooth row 71 is provided with The bearing seat 76 of the counter-countersinking gun 1 is installed, and one end of the second tooth row 72 is provided with a mounting plate 77 for mounting the countersinking cutter head 2; the countersinking cutter head 2 is coaxially arranged with the gun rod of the countersinking gun 1; the countersinking cutter head 2 is rotatably mounted on the mounting plate 77, and the countersinking gun 1 is slidably mounted on the bearing seat 76, and the countersinking gun 1 can slide along the axial direction of the countersinking cutter head 2; a guide groove 761 is formed on the bearing seat 76, and the guide groove 761 is slidably mounted along the axial direction of the countersinking cutter head 2 The guide slot 761 extends in the direction of the Y axis, and a slide 762 is provided in the guide slot 761. The counter-countersink gun 1 is mounted on the slide 762. The cooperation between the guide slot 761 and the slide 762 can make the counter-countersink gun 1 more stable when moving along the Y axis. When moving, the counter-countersink gun 1 only needs to be pushed or pulled. In addition, a universal roller 763 is provided at the bottom of the support seat 76, which can make the support seat 76 more stable when moving and provide a certain support force. In order to make the first gear row 71 and the second gear row 72 more stable when moving, a first support seat 63 supporting the first gear row 71 and a second support seat 64 supporting the second gear row 72 are also provided in the installation box 6. First limiting guide grooves that slide with the first support seat 63 are formed on both sides of the first gear row 71, and second limiting guide grooves that slide with the second support seat 64 are formed on both sides of the second gear row 72. During operation, it is only necessary to drive the connecting shaft 75 to rotate by the hand-cranked wheel 751, and the first gear 73 and the second gear 74 can be driven to rotate at the same time, thereby driving the first gear row 71 and the second gear row 72 to move in the same direction along the X-axis, so that the countersinking cutter head 2 and the countersinking gun 1 always remain coaxially set. In this way, when the countersinking cutter head 2 is driven by the mounting plate 77 to extend into the interior of the workpiece 3, the position of the countersinking cutter head 2 can be known by observing the external countersinking gun 1. When the countersinking gun 1 is aligned with the processing hole position, the countersinking gun 1 is pushed closer to the countersinking cutter head 2, so that the gun rod of the countersinking gun 1 is extended into the small hole and connected to the countersinking cutter head 2.

[0037] In this embodiment, to adjust the movement of the countersinking cutter head 2 in the Y-axis direction so that the countersinking cutter head 2 can properly extend into the workpiece 3, a drive mounting box 6 is provided on the workbench 5 to move an adjustment screw 8 along the axis of the countersinking cutter head 2. A first slider 62 is formed at the bottom of the mounting box 6, and a first slot is formed on the workbench 5 to slidably engage with the first slider 62. The adjustment screw 8 is rotatably mounted on the workbench 5 and threadedly connected to the first slider 62. A knob 81 is provided at one end of the adjustment screw 8. Furthermore, the movement distance of the countersinking cutter head 2 in the Y-axis direction is generally small.

[0038] In this embodiment, the fixture 4 is movably mounted on a workbench 5; a cylinder 9 is provided on the workbench 5 for driving the fixture 4 up and down; a support plate 51 is formed at the bottom of the workbench 5, and the cylinder body of the cylinder 9 is fixedly mounted at the bottom of the support plate 51; the fixture 4 includes two symmetrically arranged clamping units 41, a drive unit 42 for driving the two clamping units 41 toward or away from each other, and a mounting platform 43 for mounting the clamping units 41 and the drive unit 42; the piston rod of the cylinder 9 is fixedly connected to the bottom of the mounting platform 43; and the bottom of the mounting platform 43 is also provided with two limiting guide rods 431 slidably connected to the support plate 51. The cylinder 9 can drive the fixture 4 to move in the Z-axis direction, so that the workpiece 3 can be aligned with the countersinking tool head 2 in the Z-axis direction. In addition, the clamping unit 41 includes a clamping plate 411 and a plurality of clamping rollers 412. The clamping plate 411 is formed with a mounting groove for mounting the clamping rollers 412. The plurality of clamping rollers 412 are rotatably mounted on the mounting groove and are arranged at equal intervals along the extension direction of the mounting groove. The diameter of the clamping rollers 412 gradually decreases from both ends to the middle, so that no matter whether it is a round pipe or a square pipe, it can be kept in the center of the clamping roller 412 each time it is placed, and the workpiece 3 can be prevented from moving along the processing direction. Specifically, a through slot 432 extending in the vertical direction and mounting slots 433 located on both sides of the through slot 432 are formed on the mounting platform 43; a driving block 4112 passing through the through slot 432 and a mounting slide block 4113 slidingly engaged with the mounting slot 433 are formed on the clamping plate 411; the driving unit 42 includes a bidirectional screw 421 and a driving motor 422 driving the bidirectional screw 421 forward and reverse; the bidirectional screw 421 is rotatably arranged on the mounting platform 43 along the vertical direction. Specifically, two support plates are provided on the back of the mounting platform 43, and the two ends of the bidirectional screw 421 are rotatably mounted on the two support plates. The driving motor 422 is fixedly mounted on the top of the support plate. The bidirectional screw 421 has two threaded sections with opposite spiral directions, which are respectively engaged with the two driving blocks 4112; the bidirectional screw 421 is threadedly engaged with the driving block 4112. When placing the workpiece 3, the clamping roller 412 can more easily push the workpiece 3 to a suitable position; then the driving motor 422 drives the bidirectional screw 421 to rotate the two clamping units 41 closer to each other, thereby clamping the workpiece 3.

[0039] In this embodiment, a mounting hole 771 for mounting the countersinking cutter head 2 is formed on the mounting plate 77, and a rotating block 21 that rotatably cooperates with the mounting hole 771 is provided at one end of the countersinking cutter head 2 close to the mounting plate 77. The rotating block 21 can rotate synchronously with the countersinking cutter head 2; specifically, a connecting head 211 connected to the countersinking cutter head 2 is formed at one end of the rotating block 21, and a multi-prism is formed at the front end of the connecting head 211. A connecting hole 212 that cooperates with the connecting head 211 is formed on the countersinking cutter head 2, and the inner bottom of the connecting hole 212 is formed with a multi-corrugated hole that cooperates with the multi-prism column. A guide surface is formed at the front end of the multi-prism. The connecting hole 2 The depth of 12 is greater than the length of the connecting head 211; axial movement can be performed between the connecting head 211 and the connecting hole 212; and a limiting plate 2111 is formed on the connecting head 211 to prevent the connecting head 211 from detaching from the connecting hole 212; a limiting block 22 is also formed on the end of the countersinking cutter head 2 close to the mounting plate 77, and a plurality of limiting grooves 772 that can cooperate with the limiting block 22 are formed on the mounting plate 77, and the limiting grooves 772 are arc-shaped; a connecting threaded hole 23 is formed on the side of the countersinking cutter head 2 away from the mounting plate 77, and a connecting threaded column 11 that can cooperate with the connecting threaded hole 23 is formed on the gun barrel end of the countersinking gun 1. When the gun rod of the counter-countersinking gun extends into the workpiece 3 from the processing hole, it will push the countersinking cutter head 2 to move inward, and then the gun rod of the counter-countersinking gun is started to rotate forward. When the countersinking cutter head 2 rotates to a certain angle, the limit block 22 will engage with the limit slide 772 to prevent the countersinking cutter head 2 from continuing to rotate. At this time, the connecting threaded column 11 of the gun rod can continue to rotate until it is tightly connected with the connecting threaded hole 23, and then the counter-countersinking gun 1 is pulled outward to disengage the limit block 22 from the limit slide 772. At this time, the gun rod of the counter-countersinking gun 1 continues to rotate forward to perform countersinking hole processing; when the processing is completed, the counter-countersinking gun is stopped, and the counter-countersinking gun is pushed inward again to make the limit block 22 engage with the limit slide 772 again, and then the gun rod is reversed, and the connecting threaded column 11 can be withdrawn from the connecting threaded hole 23.

[0040] In this embodiment, to allow the counter-counterface gun 1 to more quickly withdraw from the countersinking cutter head 2, an annular groove 213 is formed on the rotating block 21. A plurality of ratchet teeth 2131 arranged in an annular array are disposed within the annular groove 213. An annular cavity 7711 is formed within the mounting hole 771. A plurality of pawls 7712 are hingedly connected within the annular cavity 7711 and engage with the ratchet teeth 2131. The engagement of the ratchet teeth 2131 and the pawls 7712 allows the countersinking cutter head 2 to rotate only in the forward direction, not in the reverse direction. When the gun barrel is reversed, the connecting threaded column 11 can be withdrawn from the connecting threaded hole 23.

[0041] In this embodiment, since the countersinking hole has a certain depth, and the countersinking cutter head 2 needs to be able to move along the axis during reverse countersinking, a mounting block 78 is provided between the mounting plate 77 and the second tooth row 72. The mounting block 78 is connected to the second tooth row 72 by bolts. A movable groove 781 is formed on the mounting block 78, and a limiting slide 782 is provided in the movable groove 781. A movable block 773 is formed on the mounting plate 77 to slidably engage with the movable groove 781. A limiting slide hole is formed on the movable block 773 to slidably engage with the limiting slide 782. A resisting spring 79 is also sleeved on the limiting slide 782. When reverse countersinking is performed, the mounting plate 77 can move within the movable groove 781. In addition, when the reverse countersinking gun 1 is separated from the countersinking cutter head 2, the resisting spring 79 can quickly allow the countersinking cutter head 2 to exit the countersinking hole.

[0042] The method of using the present invention is as follows: first, fix the workpiece 3 by the clamp 4 so that the processing hole of the workpiece 3 is as close to the installation box 6 as possible, and then use the hand-cranked wheel 751 to make the driving component 7 bring the countersinking cutter head 2 and the countersinking gun 1 closer to the workpiece 3, and then adjust the position of the countersinking cutter head 2 on the Y axis by adjusting the screw 8 so that the countersinking cutter head 2 can enter the interior of the workpiece 3, and then continue to rotate the hand-cranked wheel 751 to make the countersinking gun 1 and the countersinking cutter head 2 continue to move closer to the processing hole. When the countersinking gun 1 is aligned with the clamp in the X-axis direction, the countersinking gun 1 and the clamp 751 are moved closer to the processing hole. After the working hole is aligned, the position of the clamp 4 on the Z axis is adjusted by the cylinder 9 so that the countersinking gun 1 is also aligned with the processing hole position in the Z axis direction (it should be noted that for the same batch of workpieces 3, the adjustment on the Z axis and Y axis only needs to be performed on the first workpiece 3, and the subsequent workpieces 3 only need to adjust the position in the X axis direction); then push the countersinking gun 1 through the processing hole, extend it into the workpiece 3 and connect with the countersinking cutter head 2, and then pull the countersinking gun 1 outward to allow the countersinking cutter head 2 to perform the countersinking processing.

[0043] The above describes in detail the reverse countersinking apparatus provided by the present invention. The description of the specific embodiments is intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art will be able to make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the claims.

Claims

1. A countersinking hole processing device, comprising a countersinking gun (1), a countersinking tool head (2) and a fixture (4) for clamping a workpiece (3), wherein the fixture (4) is mounted on a workbench (5), and is characterized in that: The invention also includes a driving mechanism for driving the countersinking cutter head (2) and the countersinking gun (1) to move in the same direction; the driving mechanism includes a mounting box (6) movably mounted on the workbench (5) and a driving assembly (7) located in the mounting box (6), the driving assembly (7) including a first tooth row (71) for driving the countersinking gun (1) to move, a second tooth row (72) for driving the countersinking cutter head (2) to move, a first gear (73) meshed with the first tooth row (71), a second gear (74) meshed with the second tooth row (72), and a connecting shaft (75) for connecting the first gear (73) and the second gear (74); a shaft for mounting the countersinking cutter head (2) is provided on the inner bottom wall of the mounting box (6). A mounting seat (61) for a connecting shaft (75), one end of the connecting shaft (75) passes through the side wall of the mounting box (6), and a hand wheel (751) is provided at the end; one end of the first tooth row (71) is provided with a bearing seat (76) for mounting the counter-countersinking gun (1), and one end of the second tooth row (72) is provided with a mounting plate (77) for mounting the countersinking cutter head (2); the countersinking cutter head (2) and the gun barrel of the countersinking gun (1) are coaxially arranged; the countersinking cutter head (2) is rotatably mounted on the mounting plate (77), and the countersinking gun (1) is slidably mounted on the bearing seat (76), and the countersinking gun (1) can slide along the axial direction of the countersinking cutter head (2).

2. The reverse countersinking device according to claim 1, characterized in that: The workbench (5) is provided with an adjusting screw (8) for driving the installation box (6) to move along the axial direction of the countersinking cutter head (2); a first slider (62) is formed at the bottom of the installation box (6); a first sliding groove for slidingly cooperating with the first slider (62) is formed on the workbench (5); the adjusting screw (8) is rotatably installed on the workbench (5) and is threadedly connected to the first slider (62); a knob (81) is provided at one end of the adjusting screw (8).

3. The reverse countersinking device according to claim 2, characterized in that: The clamp (4) is movably mounted on the workbench (5); a cylinder (9) for driving the clamp (4) to move up and down is provided on the workbench (5); a bearing plate (51) is formed at the bottom of the workbench (5), and the cylinder body of the cylinder (9) is fixedly mounted on the bottom of the bearing plate (51); the clamp (4) comprises two symmetrically arranged clamping units (41), a driving unit (42) for driving the two clamping units to move closer to or away from each other, and a mounting platform (43) for mounting the clamping units (41) and the driving unit (42); the piston rod of the cylinder (9) is fixedly connected to the bottom of the mounting platform (43); and the bottom of the mounting platform (43) is also provided with two limiting guide rods (431) slidably connected to the bearing plate (51).

4. The reverse countersinking device according to claim 3, characterized in that: The clamping unit (41) comprises a clamping plate (411) and a plurality of clamping rollers (412); a mounting groove (4111) for mounting the clamping rollers (412) is formed on the clamping plate (411); the plurality of clamping rollers (412) are rotatably mounted on the mounting groove (4111) and are arranged at equal intervals along the extension direction of the mounting groove (4111); and the diameter of the clamping rollers (412) gradually decreases from both ends to the middle.

5. The reverse countersinking device according to claim 4, characterized in that: The mounting platform (43) is provided with a through slot (432) extending in a vertical direction and mounting slides (433) located on both sides of the through slot (432); the clamping plate (411) is provided with a driving block (4112) passing through the through slot (432) and a mounting slide block (4113) slidingly engaged with the mounting slides (433); the driving unit (42) includes a bidirectional screw (421) and a driving motor (422) driving the bidirectional screw (421) to rotate forward and reverse; the bidirectional screw (421) is arranged on the mounting platform (43) in a vertically rotatable manner; the bidirectional screw (421) is threadedly engaged with the driving block (4112).

6. The reverse countersinking device according to claim 1, characterized in that: The mounting plate (77) is provided with a mounting hole (771) for mounting the countersinking cutter head (2); an end of the countersinking cutter head (2) close to the mounting plate (77) is provided with a rotating block (21) that is rotatably matched with the mounting hole (771); the rotating block (21) can rotate synchronously with the countersinking cutter head (2); a connecting head (211) connected to the countersinking cutter head (2) is formed at one end of the rotating block (21); a connecting hole (212) that is matched with the connecting head (211) is formed on the countersinking cutter head (2); the depth of the connecting hole (212) is greater than the length of the connecting head (211); the connecting head (2 11) and the connecting hole (212) can move axially; and a limiting plate (2111) is formed on the connecting head (211); a limiting block (22) is also formed on the end of the countersinking cutter head (2) close to the mounting plate (7), and a plurality of limiting slide grooves (772) that can cooperate with the limiting block (22) are formed on the mounting plate (77), and the limiting slide grooves (772) are arc-shaped; a connecting threaded hole (23) is formed on the side of the countersinking cutter head (2) away from the mounting plate (77), and a connecting threaded column (11) that can cooperate with the connecting threaded hole (23) is formed on the gun barrel end of the countersinking gun (1).

7. The reverse countersinking device according to claim 6, characterized in that: An annular groove (213) is formed on the rotating block (21), and a plurality of ratchet teeth (2131) arranged in an annular array are provided in the annular groove (213); an annular cavity (7711) is formed in the mounting hole (771), and a plurality of ratchet pawls (7712) capable of cooperating with the ratchet teeth (2131) are hinged in the annular cavity (7711).

8. The reverse countersinking device according to claim 7, characterized in that: A mounting block (78) is provided between the mounting plate (77) and the second tooth row (72), and the mounting block (78) and the second tooth row (72) are connected by bolts; a movable groove (781) is formed on the mounting block (78), and a limiting slide rod (782) is provided in the movable groove (781); a movable block (773) that slides with the movable groove (781) is formed on the mounting plate (77), and a limiting slide hole that slides with the limiting slide rod (782) is formed on the movable block (773); a resisting spring (79) is also sleeved on the limiting slide rod (782).

9. The reverse countersinking device according to claim 1, characterized in that: A guide groove (761) is formed on the supporting seat (76), and the guide groove (761) extends along the axial direction of the countersinking cutter head (2). A slide seat (762) is slidingly provided in the guide groove (761), and the countersinking gun (1) is installed on the slide seat (762); a universal roller (763) is also provided at the bottom of the supporting seat (76).

10. The reverse countersinking device according to claim 1, characterized in that: The installation box (6) is further provided with a first support seat (63) supporting the first tooth row (71) and a second support seat (64) supporting the second tooth row (72); first limiting guide grooves for slidingly cooperating with the first support seat (63) are formed on both sides of the first tooth row (71), and second limiting guide grooves for slidingly cooperating with the second support seat (64) are formed on both sides of the second tooth row (72).

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