Intelligent automatic hole opening equipment

Abstract

The invention discloses an intelligent automatic hole-opening device, which relates to the field of mechanical processing technology and includes an electric drill mechanism and a clamping and conveying mechanism. The clamping and conveying mechanism includes: at least three clamping members distributed in a circumferential array are radially slidably arranged on a fixed ring, the clamping member includes a sliding part, a rotating part and a roller, the sliding part is slidably connected to the fixed ring, the rotating part is rotatably arranged on the sliding part, and the roller is rotatably connected to the rotating part; a first driving member drives each clamping member to synchronously slide toward or away from the center of the fixed ring, and a clamping station for each roller to clamp a workpiece is provided on the synchronous sliding stroke of each clamping member; a second driving member drives each rotating part to synchronously reciprocate 90 degrees so that the axial direction of the roller is parallel or perpendicular to the axial direction of the workpiece; a third driving member drives each roller to rotate synchronously, and when the axial direction of the roller is parallel to the axial direction of the workpiece, the roller drives the workpiece to move along the axial direction, and when the axial direction of the roller is perpendicular to the axial direction of the workpiece, the roller drives the workpiece to rotate by itself.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to an intelligent automatic hole-opening device. Background Art

[0002] When performing hole drilling processing on cylindrical workpieces such as steel pipes, columns, and shafts, it is necessary to drill multiple holes along the length direction of the cylindrical workpiece and multiple holes along the circumference of the cylindrical workpiece according to production requirements. For example, a group of circular array holes are opened on the cylindrical workpiece along the circumference, and then multiple holes of this group are opened along the axial direction of the workpiece.

[0003] There are currently two methods to achieve the above-mentioned hole-opening requirements. One is to transport the workpiece along a straight line through a linear conveying mechanism, so that the hole positions on the same generatrix on the cylindrical workpiece are aligned with the electric drill in sequence for hole opening, and then the circumferential direction of the workpiece is adjusted so that the workpiece is repeated through the linear conveying mechanism for the hole-opening operation; the other is to rotate the workpiece along the circumference of the workpiece through a rotating mechanism, so that the hole positions on the same group of holes on the cylindrical workpiece are aligned with the electric drill in sequence for hole opening, and then the length direction of the workpiece is adjusted so that the workpiece is repeated through the rotating mechanism for the hole-opening operation.

[0004] The shortcomings of the above-mentioned prior art are that the hole-opening equipment cannot complete multiple circumferential and axial holes of the workpiece at one time, the hole-opening efficiency is low, the workpiece needs to be adjusted multiple times, the processing process is relatively cumbersome, and it lacks the ability to adapt to workpieces of different diameters. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent automatic hole-opening device to solve the deficiencies in the above-mentioned prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent automatic hole-opening device, which is used for opening holes in cylindrical workpieces, comprising an electric drill mechanism and a clamping and conveying mechanism, wherein the electric drill mechanism is used to open holes in the workpiece clamped by the clamping and conveying mechanism, and the clamping and conveying mechanism comprises: a fixed ring, on which at least three clamping members distributed in a circumferential array are radially slidably arranged, the clamping member comprises a sliding part, a rotating part and a roller, the sliding part is slidably connected to the fixed ring, the rotating part is rotatably arranged on the sliding part, and the roller The wheel is rotatably connected to the rotating part; the first driving member drives each clamping member to synchronously slide toward or away from the center of the fixed ring, and each clamping member has a clamping position on the synchronous sliding stroke for each roller to clamp the workpiece; the second driving member drives each rotating part to synchronously reciprocate 90 degrees so that the axial direction of the roller is parallel or perpendicular to the axial direction of the workpiece; the third driving member drives each roller to rotate synchronously, when the axial direction of the roller is parallel to the axial direction of the workpiece, the roller drives the workpiece to move along the axial direction, and when the axial direction of the roller is perpendicular to the axial direction of the workpiece, the roller drives the workpiece to rotate by itself.

[0007] Furthermore, the first driving member includes a first driving unit and a rotating ring, the rotating ring is coaxially rotatably connected to the fixed ring, a plurality of inclined grooves distributed in a circular array are provided on the rotating ring, each sliding part is provided with a sliding column, each sliding column is slidably connected to each inclined groove in a one-to-one correspondence, and the first driving unit is used to drive the rotating ring to rotate relative to the fixed ring.

[0008] Furthermore, the first driving unit comprises a first hydraulic cylinder, a cylinder seat of the first hydraulic cylinder is fixedly connected to the fixing ring via a connecting rod, and an open end of the hydraulic rod of the first hydraulic cylinder is fixedly connected to a sliding portion of one of the clamping members.

[0009] Furthermore, the second driving member includes: a plurality of first gears, which are coaxially fixedly connected with the rotating shaft between the rotating part and the sliding part of each clamping member in a one-to-one correspondence; a plurality of racks, which are slidably connected with each sliding part in a one-to-one correspondence along the axial direction of the fixed ring; a moving ring, which is coaxially slidably connected with the fixed ring; a plurality of sliding rods, which are fixedly connected with each rack in a one-to-one correspondence, and each sliding rod is slidably connected to the moving ring along the sliding direction of the corresponding clamping member; and a second driving unit, which is used to drive the moving ring to slide.

[0010] Furthermore, the second driving unit comprises a second hydraulic cylinder, a cylinder seat of the second hydraulic cylinder is fixedly mounted on the fixed ring, and an open end of a hydraulic rod of the second hydraulic cylinder is fixedly connected to the movable ring.

[0011] Furthermore, the movable ring is provided with a plurality of first sliding holes penetrating through the two end surfaces, and the fixed ring is fixedly connected with a plurality of sliding rods, and each sliding rod is slidingly connected with each first sliding hole in a one-to-one correspondence.

[0012] Furthermore, the third driving member includes: a plurality of first bevel gears, which are rotationally connected with each sliding part in a one-to-one correspondence, and the first bevel gears are coaxial with the rotating shaft between the rotating part of the corresponding clamping member and the sliding part; a plurality of second bevel gears, which are coaxially fixedly connected with the rotating shaft of each roller in a one-to-one correspondence, and the second bevel gears are meshed with the corresponding first bevel gears; a plurality of third bevel gears, which are rotationally connected with each sliding part in a one-to-one correspondence, the axial direction of the third bevel gears is parallel to the axial direction of the fixing ring, and the third bevel gears are meshed with the corresponding first bevel gears; a plurality of first sprockets, which are coaxially fixedly connected with each third bevel gear in a one-to-one correspondence, and a second sprocket is movably arranged between two adjacent first sprockets in the annular direction; a chain, which is transmission-connected with each first sprocket so that each first sprocket can rotate synchronously in the same direction, and each second sprocket tightens the chain; a third driving unit, which is used to drive any first sprocket to rotate.

[0013] Furthermore, the third driving unit is installed on the sliding part of one of the clamping members, and the third driving unit includes a servo motor, a second gear and a third gear. The servo motor is fixedly installed on the corresponding sliding part through the second bracket, the second gear is coaxially fixedly connected to the output shaft of the servo motor, the third gear is coaxially fixedly connected to the corresponding first sprocket, and the third gear is meshed with the second gear.

[0014] Furthermore, a plurality of third brackets are fixedly connected to the fixed ring, and a guide rod is fixedly connected to each of the third brackets. The guide rods are distributed in a circular array along the circumference of the fixed ring, and the length direction of each guide rod is along the radial direction of the fixed ring. The center axis of each second sprocket is slidably connected to each guide rod one by one, and an elastic unit is arranged between the third bracket and the center axis of the corresponding second sprocket, and the elastic force of the elastic unit drives the corresponding second sprocket to slide in a direction away from the center of the fixed ring.

[0015] Furthermore, a plurality of third brackets are fixedly connected to the fixed ring, each third bracket corresponds to each second sprocket one by one, a third hydraulic cylinder is arranged between the third bracket and the corresponding second sprocket, the cylinder seat of the third hydraulic cylinder is fixedly mounted on the third bracket, the open end of the hydraulic cylinder of the third hydraulic cylinder is fixedly connected to the central axis of the second sprocket, and the third hydraulic cylinder drives the corresponding second sprocket to tension the chain by extending and retracting its hydraulic rod.

[0016] In the above technical scheme, the present invention provides an intelligent automatic hole-opening equipment, which can clamp and open holes in workpieces of various diameters and models through the cooperation between a fixed ring, multiple clamping parts and a first driving part, and each clamping part can drive the workpiece to move axially and rotate circumferentially, which greatly facilitates the hole-opening operation of the electric drill mechanism and greatly improves the hole-opening work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1-4 A schematic diagram of the structure of a clamping and conveying mechanism provided in an embodiment of the present invention conveying a workpiece along the axial direction of the workpiece;

[0019] Figure 5-8 A schematic diagram of the structure of a clamping and conveying mechanism provided in an embodiment of the present invention that rotates a workpiece along the circumferential direction of the workpiece;

[0020] Fig. 9 A schematic diagram of the structure of a clamping member provided in an embodiment of the present invention;

[0021] Fig.10 A schematic structural diagram of a first driving member provided in an embodiment of the present invention;

[0022] Fig.11 A schematic structural diagram of a second driving member provided in an embodiment of the present invention;

[0023] Fig.12 A schematic structural diagram of a clamping member and a third driving member when a workpiece is transported along the axial direction of the workpiece provided by an embodiment of the present invention;

[0024] Fig.13 A schematic structural diagram of a clamping member and a third driving member for rotating a workpiece along the circumferential direction of the workpiece provided by an embodiment of the present invention;

[0025] Fig.14 A schematic diagram of the overall structure provided for an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1. Electric drill mechanism; 2. Fixed ring; 3. Clamping part; 3.1. Sliding part; 3.2. Rotating part; 3.3. Roller; 4. Rotating ring; 3.4. Slide groove; 5. Inclined groove; 6. Sliding column; 7. First hydraulic cylinder; 8. First gear; 9. Rack; 10. Moving ring; 11. Sliding rod; 12. Second hydraulic cylinder; 13. Sliding rod; 14. First bevel gear; 15. Second bevel gear; 16. Third bevel gear; 17. First sprocket; 18. Second sprocket; 19. Chain; 20. Servo motor; 21. Second gear; 22. Third gear; 23. Connecting rod; 24. First bracket; 25. Second bracket; 26. Third bracket; 27. Guide rod; 28. Slip ring; 29. ​​Support rod; 30. Support ring; 31. Sliding block; 32. Elastic unit. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] See also Figure 1-14 An embodiment of the present invention provides an intelligent automatic hole-opening device, which is used for opening holes in cylindrical workpieces, and includes an electric drill mechanism 1 and a clamping and conveying mechanism. The electric drill mechanism 1 is used to open holes in the workpiece clamped by the clamping and conveying mechanism. The electric drill mechanism 1 includes an electric drill, which can move along the axial direction of the drill bit so as to advance and retreat along the hole depth direction when opening the hole. This is the prior art and will not be elaborated in detail. The clamping and conveying mechanism comprises a fixed ring 2, a first driving member, a second driving member and a third driving member, wherein at least three clamping members 3 distributed in a circumferential array are radially slidably arranged on the fixed ring 2, that is, each clamping member 3 is radially distributed relative to the center of the fixed ring 2, and the clamping member 3 comprises a sliding portion 3.1, a rotating portion 3.2 and a roller 3.3, the sliding portion 3.1 is slidably connected to the fixed ring 2, and preferably, a plurality of sliders 31 are fixedly connected to the fixed ring 2, each sliding portion 3.1 is provided with a sliding groove 3.4, or the slider 31 is fixedly connected to the sliding portion 3.1, and the sliding groove 3.4 is provided on the fixed ring 2, and each slider 31 is slidably matched with each sliding groove 3.4 in a one-to-one correspondence, so that the sliding portion 3.1 of the clamping member 3 can slide on the fixed ring 2, and the rotating portion 3.2 is rotatably arranged on the sliding portion 3.1, and the rotating portion 3.2 is rotatably arranged on the sliding portion 3.1, and the rotating portion 3.2 is rotatably arranged on the sliding portion 3.1. The axial direction of the rotating shaft between the rotating part 3.2 and the sliding part 3.1 is consistent with the sliding direction of the sliding part 3.1 on the fixed ring 2, and the roller 3.3 is rotatably connected to the rotating part 3.2. The rotating part 3.2 is specifically U-shaped or L-shaped. The first driving member of the rotating part 3.2 drives each clamping member 3 to synchronously slide toward or away from the center of the fixed ring 2. Each clamping member 3 has a clamping position for clamping a cylindrical workpiece on the synchronous sliding stroke. The second driving member drives each rotating part 3.2 to synchronously reciprocate 90 degrees so that the axial direction of the roller 3.3 is parallel to or perpendicular to the axial direction of the workpiece. The third driving member drives each roller 3.3 to rotate synchronously. When the axial direction of the roller 3.3 is parallel to the axial direction of the workpiece, the roller 3.3 drives the workpiece to move axially. When the axial direction of the roller 3.3 is perpendicular to the axial direction of the workpiece, the roller 3.3 drives the workpiece to rotate by itself.

[0030] In the above technical scheme, the present invention provides an intelligent automatic hole-opening equipment, which can clamp workpieces of various diameters and models through the cooperation between the fixing ring 2, multiple clamping members 3 and the first driving member. The electric drill mechanism 1 can perform hole-opening operations on the clamped workpiece, and each clamping member 3 can drive the workpiece to move axially and rotate circumferentially, so that the drill bit of the electric drill mechanism 1 is aligned with each hole-opening position on the workpiece, which greatly facilitates the hole-opening operation of the electric drill mechanism 1 and greatly improves the hole-opening work efficiency.

[0031] As a preferred technical solution of the present invention, the first driving member includes a first driving unit and a rotating ring 4, which is coaxially rotatably connected to the fixed ring 2. The rotating ring 4 is provided with a plurality of inclined grooves 5 distributed in a circular array, and each sliding part 3.1 is provided with a sliding column 6. Each sliding column 6 is slidingly connected to each inclined groove 5 in a one-to-one correspondence. The first driving unit is used to drive the rotating ring 4 to rotate relative to the fixed ring 2 (such as forward rotation). During the rotation of the rotating ring 4, through the sliding cooperation between the inclined groove 5 and the sliding column 6 and the sliding cooperation between the sliding part 3.1 and the fixed ring 2, each clamping member 3 slides toward the center of the fixed ring 2 synchronously. When the first driving unit drives the rotating ring 4 to reverse relative to the fixed ring 2, each clamping member 3 will slide away from the center of the fixed ring 2 synchronously.

[0032] Further preferably, the first driving unit includes a first hydraulic cylinder 7, the cylinder seat of the first hydraulic cylinder 7 is fixedly connected to the fixed ring 2 through a connecting rod 23, the open end of the hydraulic rod of the first hydraulic cylinder 7 is fixedly connected to the sliding part 3.1 of one of the clamping members 3, the extension direction of the hydraulic rod of the first hydraulic cylinder 7 is consistent with the sliding direction of the corresponding sliding part 3.1, and the first hydraulic cylinder 7 drives the corresponding clamping member 3 to slide by extending and retracting its hydraulic rod. Alternatively, the first driving unit includes a first hydraulic cylinder 7, the cylinder seat of the first hydraulic cylinder 7 is rotatably connected to the fixed ring 2, the open end of the hydraulic rod of the first hydraulic cylinder 7 is rotatably connected to the rotating ring 4, and the first hydraulic cylinder 7 drives the rotating ring 4 to slide relative to the fixed ring 2 by extending and retracting its hydraulic rod. Further, the first hydraulic cylinder 7 can be replaced by a first electric push rod.

[0033] As a preferred technical solution of the present invention, the second driving member includes a plurality of first gears 8, a plurality of racks 9, a moving ring 10, a plurality of sliding rods 11 and a second driving unit, wherein each first gear 8 is coaxially fixedly connected with the rotating shaft between the rotating part 3.2 and the sliding part 3.1 of each clamping member 3 in a one-to-one correspondence, specifically, one end of the rotating shaft between the rotating part 3.2 and the sliding part 3.1 is rotatably connected to the sliding part 3.1, and the other end is fixedly connected to the rotating part 3.2, and each rack 9 is coaxially fixedly connected with each sliding part 3.1 along the axial direction of the fixed ring 2. The movable ring 10 is slidably connected one by one with the fixed ring 2, each sliding rod 11 is fixedly connected to each rack 9 one by one, each sliding rod 11 is slidably connected to the movable ring 10 along the sliding direction of the corresponding clamping member 3, and the second driving unit is used to drive the movable ring 10 to slide. The movable ring 10 drives each rack 9 to move synchronously through each sliding rod 11, and each rack 9 drives its meshing gear to rotate, so that the rotating part 3.2 and the roller 3.3 rotate synchronously by 90 degrees, so that the axial direction of the roller 3.3 is parallel or perpendicular to the axial direction of the workpiece.

[0034] Further preferably, the second drive unit includes a second hydraulic cylinder 12, the cylinder seat of the second hydraulic cylinder 12 is fixedly mounted on the fixed ring 2, the open end of the hydraulic rod of the second hydraulic cylinder 12 is fixedly connected to the moving ring 10, and the extension direction of the hydraulic rod of the second hydraulic cylinder 12 is consistent with the sliding direction of the moving ring 10, that is, along the axial direction of the fixed ring 2, the first hydraulic cylinder 7 drives the corresponding moving ring 10 to slide by extending and retracting its hydraulic rod. Further, the second hydraulic cylinder 12 can be replaced by a second electric push rod.

[0035] Further preferably, the movable ring 10 is provided with a plurality of first sliding holes passing through the two end surfaces, and the length direction of the first sliding holes is parallel to the axial direction of the movable ring 10. The fixed ring 2 is fixedly connected with a plurality of sliding rods 13, and the length direction of the sliding rods 13 is parallel to the axial direction of the movable ring 10. Each sliding rod 13 is slidingly connected with each first sliding hole in a one-to-one correspondence, so that the movable ring 10 can slide relative to the fixed ring 2.

[0036] Further preferably, the movable ring 10 is provided with a plurality of second sliding holes penetrating the inner side and the outer side, each sliding rod 11 corresponds to each second sliding hole one by one, and the sliding rod 11 slides through the corresponding second sliding hole, so that the sliding rod 11 can slide relative to the movable ring 10.

[0037] As a preferred technical solution of the present invention, the third driving member includes a plurality of first bevel gears 14, a plurality of second bevel gears 15, a plurality of third bevel gears 16, a plurality of first sprockets 17, a plurality of second sprockets 18, a chain 19 and a third driving unit, wherein the number of the first bevel gears 14, the second bevel gears 15, the third bevel gears 16, and the first sprocket 17 clamping members 3 is equal and one-to-one corresponding, each first bevel gear 14 is rotationally connected with each sliding portion 3.1 in a one-to-one correspondence, and the first bevel gear 14 is coaxial with the rotating shaft between the rotating portion 3.2 of the corresponding clamping member 3 and the sliding portion 3.1, and specifically, the sliding portion 3.1 is fixedly connected by a support rod 29 There is a support ring 30, which is rotatably connected with the corresponding first bevel gear 14, so that the first bevel gear 14 is rotatably connected with the corresponding sliding part 3.1, and each second bevel gear 15 is coaxially fixedly connected with the rotating shaft of each roller 3.3 in a one-to-one correspondence. The second bevel gear 15 is meshed with the first bevel gear 14 on the corresponding clamping member 3. During the process of the rotating part 3.2 driving the corresponding roller 3.3 and the second bevel gear 15 to rotate, the second bevel gear 15 is always meshed with the first bevel gear 14, and each third bevel gear 16 is rotatably connected with each sliding part 3.1 in a one-to-one correspondence. The axial direction of the second bevel gear 15 is parallel to the axis of the fixed ring 2. Specifically, , each sliding part 3.1 is fixedly connected with a first bracket 24, the third bevel gear 16 is rotatably connected to the corresponding first bracket 24, the third bevel gear 16 is meshed with the first bevel gear 14 on the corresponding clamping member 3, each first sprocket 17 is coaxially fixedly connected with each third bevel gear 16 in a one-to-one correspondence, and a second sprocket 18 is movably arranged between two adjacent first sprockets 17 in the annular direction, and the chain 19 is transmission-connected with each first sprocket 17 so that each first sprocket 17 can rotate synchronously in the same direction, and each second sprocket 18 is used to tension the chain 19 when the distance between each clamping member 3 and the center of the fixed ring 2 changes, and each second sprocket 18 is relatively fixed The fixed ring 2 always maintains a circular array distribution in the circumferential direction, and the chain 19 between each second sprocket 18 and the adjacent first sprocket 17 is equal in length. The third driving unit is used to drive any first sprocket 17 to rotate, so that the chain 19 and other first sprockets 17 and second sprockets 18 operate synchronously, each first sprocket 17 drives the corresponding third bevel gear 16 to rotate, each third bevel gear 16 drives the corresponding first bevel gear 14 to rotate, each first bevel gear 14 drives the corresponding second bevel gear 15 to rotate, and each second bevel gear 15 drives the corresponding roller 3.3 to rotate, and each roller 3.3 can synchronously drive the cylindrical workpiece to move axially or rotate circumferentially.

[0038] Preferably, when each roller 3.3 remains in the state of clamping the workpiece, the second driving member drives the rotating part 3.2 and the roller 3.3 to rotate synchronously by 90 degrees, and at this time, the third driving unit should simultaneously drive the first bevel gear 14 to rotate by 90 degrees, that is, the second bevel gear 15 and the first bevel gear 14 remain relatively stationary, so that the roller 3.3 will not rotate by itself, reducing or even avoiding the displacement of the workpiece caused by the self-rotation of the roller 3.3 when the second driving member is in operation. Furthermore, the first driving member can be used to synchronously move each roller 3.3 away from the center of the fixed ring 2 so as to no longer clamp the workpiece, and then the second driving member is operated.

[0039] Further preferably, the third drive unit is installed on the sliding part 3.1 of one of the clamping members 3, and the third drive unit includes a servo motor 20, a second gear 21 and a third gear 22. The servo motor 20 is fixedly installed on the corresponding sliding part 3.1 through the second bracket 25, and the second gear 21 is coaxially fixedly connected to the output shaft of the servo motor 20. A reducer can be added between the servo motor 20 and the second gear 21. The third gear 22 is coaxially fixedly connected to the first sprocket 17 on the corresponding clamping member 3, and the third gear 22 is meshed with the second gear 21. The servo motor 20 drives one of the first sprockets 17 to rotate through the second gear 21 and the third gear 22.

[0040] Further preferably, a plurality of third brackets 26 are fixedly connected to the fixing ring 2, and each third bracket 26 is respectively fixedly connected to a guide rod 27, and each guide rod 27 is distributed in a circumferential array along the circumference of the fixing ring 2, and the length direction of each guide rod 27 is along the radial direction of the fixing ring 2, that is, each guide rod 27 is radially distributed relative to the center of the fixing ring 2, and the central axis of each second sprocket 18 is slidably connected to each guide rod 27 in a one-to-one correspondence. Specifically, a slip ring 28 is fixedly connected to the central axis of the second sprocket 18, and the slip ring 28 is slidably sleeved on the corresponding guide rod 27, and the slip ring 28 cannot rotate relative to the guide rod 27, and the third bracket 26 is connected to the corresponding second sprocket 18. An elastic unit 32 is arranged between the central axes of the second sprocket 18, and the elastic force of the elastic unit 32 drives the corresponding second sprocket 18 to slide in the direction away from the center of the fixing ring 2. Preferably, the elastic unit 32 is a tension spring, which is sleeved on the guide rod 27, and the tension spring is located between the third bracket 26 and the slip ring 28. One end of the tension spring is fixedly connected to the third bracket 26, and the other end is fixedly connected to the slip ring 28. Preferably, the elastic unit 32 is a compression spring, which is sleeved on the guide rod 27, and the compression spring is located between one end of the guide rod 27 away from the third bracket 26 and the slip ring 28. One end of the compression spring is fixedly connected to one end of the guide rod 27 away from the third bracket 26, and the other end is fixedly connected to the slip ring 28.

[0041] Another preferred embodiment is that a plurality of third brackets 26 are fixedly connected to the fixed ring 2, each third bracket 26 corresponds to each second sprocket 18 one by one, a third hydraulic cylinder is provided between the third bracket 26 and the corresponding second sprocket 18, the cylinder seat of the third hydraulic cylinder is fixedly mounted on the third bracket 26, the open end of the hydraulic cylinder of the third hydraulic cylinder is fixedly connected to the central axis of the second sprocket 18, and the third hydraulic cylinder drives the corresponding second sprocket 18 to tension the chain 19 by extending and retracting its hydraulic rod.

[0042] In the present invention, multiple clamping and conveying mechanisms can be arranged in parallel. When the second driving member is working, each clamping and conveying mechanism can work in turn to drive the roller 3.3 to turn. Furthermore, the present invention can also be used in conjunction with other clamps. When the second driving member is working, the clamps can fix the workpiece, which can improve the hole opening accuracy. Of course, it can also be used in conjunction with a positioning detection mechanism to improve the accuracy of the drill bit of the electric drill mechanism 1 to align with the hole opening position. The positioning detection mechanism can use components such as photoelectric sensors and distance sensors. These sensors are widely used and mature in this field and will not be repeated here.

[0043] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An intelligent automatic hole-opening device, which is used for opening holes in cylindrical workpieces, characterized in that: It includes an electric drill mechanism and a clamping and conveying mechanism, wherein the electric drill mechanism is used to drill a hole in a workpiece clamped by the clamping and conveying mechanism, and the clamping and conveying mechanism includes: A fixed ring, on which at least three clamping members distributed in a circumferential array are radially slidably arranged, the clamping member comprising a sliding portion, a rotating portion and a roller, the sliding portion is slidably connected to the fixed ring, the rotating portion is rotatably arranged on the sliding portion, and the roller is rotatably connected to the rotating portion; A first driving member drives each clamping member to synchronously slide toward or away from the center of the fixed ring, and each clamping member has a clamping station on the synchronous sliding stroke for each roller to clamp the workpiece; A second driving member drives each rotating part to synchronously reciprocate 90 degrees so that the axial direction of the roller is parallel or perpendicular to the axial direction of the workpiece; A third driving member drives each roller to rotate synchronously. When the axial direction of the roller is parallel to the axial direction of the workpiece, the roller drives the workpiece to move along the axial direction. When the axial direction of the roller is perpendicular to the axial direction of the workpiece, the roller drives the workpiece to rotate. The first driving member includes a first driving unit and a rotating ring, the rotating ring is coaxially rotatably connected to the fixed ring, a plurality of inclined grooves distributed in a circumferential array are provided on the rotating ring, each sliding part is provided with a sliding column, each sliding column is slidably connected to each inclined groove in a one-to-one correspondence, and the first driving unit is used to drive the rotating ring to rotate relative to the fixed ring; The second driving member comprises: A plurality of first gears, which are coaxially fixedly connected with the rotating shaft between the rotating part and the sliding part of each clamping member in a one-to-one correspondence; A plurality of racks, which are slidably connected with the sliding parts one by one along the axial direction of the fixing ring; A movable ring, which is coaxially slidably connected with the fixed ring; A plurality of sliding rods, which are fixedly connected to the racks one by one, and each sliding rod is slidably connected to the moving ring along the sliding direction of the corresponding clamping member; A second driving unit, which is used to drive the moving ring to slide; The third driving member comprises: A plurality of first bevel gears are rotatably connected to the sliding parts in a one-to-one correspondence, and the first bevel gears are coaxial with the rotating shaft between the rotating part and the sliding part of the corresponding clamping member; A plurality of second bevel gears, which are coaxially fixedly connected with the rotating shafts of the rollers in a one-to-one correspondence, and the second bevel gears are meshed with the corresponding first bevel gears; A plurality of third bevel gears are rotatably connected to the sliding parts in a one-to-one correspondence, the axial direction of the third bevel gears is parallel to the axial direction of the fixing ring, and the third bevel gears are meshed with the corresponding first bevel gears; A plurality of first sprockets are coaxially fixedly connected with the third bevel gears in a one-to-one correspondence, and a second sprocket is movably arranged between two adjacent first sprockets in the annular direction; A chain, which is transmission-connected to each first sprocket so that each first sprocket can rotate synchronously in the same direction, and each second sprocket tensions the chain; The third driving unit is used for driving any one of the first sprockets to rotate.

2. The intelligent automatic hole-opening device according to claim 1, characterized in that: The first driving unit comprises a first hydraulic cylinder, a cylinder seat of the first hydraulic cylinder is fixedly connected to a fixing ring via a connecting rod, and an open end of a hydraulic rod of the first hydraulic cylinder is fixedly connected to a sliding portion of one of the clamping members.

3. The intelligent automatic hole-opening device according to claim 1, characterized in that: The second driving unit comprises a second hydraulic cylinder, a cylinder seat of the second hydraulic cylinder is fixedly mounted on the fixed ring, and an open end of a hydraulic rod of the second hydraulic cylinder is fixedly connected to the movable ring.

4. The intelligent automatic hole-opening device according to claim 1, characterized in that: The movable ring is provided with a plurality of first sliding holes penetrating through the two end surfaces, and the fixed ring is fixedly connected with a plurality of sliding rods, and each sliding rod is slidingly connected with each first sliding hole in a one-to-one corresponding manner.

5. The intelligent automatic hole-opening device according to claim 1, characterized in that: The third driving unit is installed on the sliding part of one of the clamping members. The third driving unit includes a servo motor, a second gear and a third gear. The servo motor is fixedly installed on the corresponding sliding part through the second bracket. The second gear is coaxially fixedly connected to the output shaft of the servo motor. The third gear is coaxially fixedly connected to the corresponding first sprocket, and the third gear is meshed with the second gear.

6. The intelligent automatic hole-opening device according to claim 1, characterized in that: A plurality of third brackets are fixedly connected to the fixed ring, and a guide rod is fixedly connected to each of the third brackets. The guide rods are distributed in a circular array along the circumference of the fixed ring, and the length direction of each guide rod is along the radial direction of the fixed ring. The central axis of each second sprocket is slidably connected to each guide rod in a one-to-one correspondence. An elastic unit is arranged between the third bracket and the central axis of the corresponding second sprocket, and the elastic force of the elastic unit drives the corresponding second sprocket to slide in a direction away from the center of the fixed ring.

7. The intelligent automatic hole-opening device according to claim 1, characterized in that: A plurality of third brackets are fixedly connected to the fixed ring, each third bracket corresponds to each second sprocket one by one, a third hydraulic cylinder is arranged between the third bracket and the corresponding second sprocket, the cylinder seat of the third hydraulic cylinder is fixedly mounted on the third bracket, the open end of the hydraulic cylinder of the third hydraulic cylinder is fixedly connected to the central axis of the second sprocket, and the third hydraulic cylinder drives the corresponding second sprocket to tension the chain by extending and retracting its hydraulic rod.

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