Drilling device

Abstract

The invention discloses a drilling device, and relates to the technical field of material processing. The drilling device comprises a shell, a driving shaft, a driving mechanism and a vibration assembly. Two fixing structures are arranged in the shell at intervals. The driving shaft sequentially penetrates through the two fixing structures and can rotate; the driving mechanism comprises a driving wheel and a rotating wheel, the driving wheel sleeves the driving shaft and coaxially rotates with the driving shaft, the rotating wheel sleeves the driving shaft and is in threaded connection with the driving shaft, and the angular velocities of the driving wheel and the rotating wheel are different; the vibration assembly comprises an elastic piece, a vibration ring and an abutting structure, the elastic piece is arranged between the driving mechanism and one fixing structure, the abutting structure is arranged between the driving mechanism and the other fixing structure, the vibration ring is fixedly arranged on the side, facing the abutting structure, of the driving wheel, and a protruding part and a concave part are arranged on the side, facing the abutting structure, of the vibration ring. According to the drilling device, the drilling strength is improved, and the working intensity and the working difficulty of operators are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of material processing technology, and particularly relates to a drilling device. BACKGROUND

[0002] Material technology is developing rapidly, and in various industrial fields, in addition to metals, more and more composite materials are also being used, and as the application of composite materials becomes more and more extensive, the processing of composite materials becomes more and more important, which includes the processing of carbon fibers.

[0003] When drilling carbon fibers, manual drilling may be required, and due to the high hardness of carbon fibers, the drilling time is gradually lengthened, increasing the work intensity and difficulty of the operator. SUMMARY

[0004] The purpose of the present application is to provide a drilling device to improve the drilling intensity and reduce the work intensity and difficulty of the operator.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] A drilling device comprises:

[0007] An outer shell, two fixed structures are arranged in the outer shell at intervals;

[0008] A drive shaft, the drive shaft is sequentially arranged in the two fixed structures and can rotate, and the drive shaft is configured to install a drill bit;

[0009] A drive mechanism, the drive mechanism comprises a drive wheel and a rotating wheel, the drive wheel is sleeved on the drive shaft and rotates coaxially with the drive shaft, and the rotating wheel is sleeved on the drive shaft and is threadedly connected with the drive shaft, and the angular velocities of the drive wheel and the rotating wheel are different;

[0010] A vibration assembly, the vibration assembly comprises an elastic member, a vibration ring and an abutting structure, the elastic member is arranged between the drive mechanism and one of the fixed structures, the abutting structure is arranged between the drive mechanism and the other fixed structure, the vibration ring is fixedly arranged on the side of the drive wheel facing the abutting structure, the side of the vibration ring facing the abutting structure is provided with a protruding portion and a recessed portion, and the abutting structure can alternately abut on the protruding portion and the recessed portion.

[0011] As an optional solution of the above drilling device, a sliding groove is formed on the side of the drive wheel facing the rotating wheel in the circumferential direction, a ball is arranged in the sliding groove, and the ball rolls against the rotating wheel.

[0012] As an optional solution of the above drilling device, the abutting structure comprises a roller and a roller holder, the roller holder is sleeved on the driving shaft and can rotate relative to the driving shaft, and the roller is arranged on the roller holder in a rolling manner and abuts against the vibration ring in a rolling manner.

[0013] As an optional solution of the above drilling device, the vibration ring is provided with a plurality of the protruding portions at intervals in the circumferential direction, the recessed portion is formed between two adjacent protruding portions, the abutting structure comprises a plurality of the rollers, and the plurality of rollers correspond to the plurality of protruding portions one by one.

[0014] As an optional solution of the above drilling device, the two fixing structures are bearings, the outer rings of the two bearings are fixedly connected with the shell, the driving wheel comprises a first wheel body and a first sleeving portion, the rotating wheel comprises a second wheel body and a second sleeving portion, the first sleeving portion and the second sleeving portion extend along the axial direction of the driving shaft and are sleeved on the driving shaft, the inner ring of one of the bearings is sleeved on the first sleeving portion, and the inner ring of the other bearing is sleeved on the second sleeving portion.

[0015] As an optional solution of the above drilling device, the elastic member is a round spring, the round spring is sleeved on the second sleeving portion, and the round spring abuts against the inner ring of one of the bearings and the second wheel body.

[0016] As an optional solution of the above drilling device, the vibration assembly further comprises a retaining ring, the retaining ring is located on the side of the abutting structure away from the vibration ring, and the retaining ring abuts against the inner ring of one of the bearings and the abutting structure.

[0017] As an optional solution of the above drilling device, the drilling device further comprises a power mechanism, the power mechanism comprises a driving member, a first power wheel and a second power wheel, the first power wheel and the second power wheel are coaxially arranged and synchronously rotate, the first power wheel is in transmission connection with the driving wheel, the second power wheel is in transmission connection with the rotating wheel, and the driving member is in transmission connection with the first power wheel.

[0018] As an optional solution of the above drilling device, the transmission ratio between the first power wheel and the driving wheel is greater than the transmission ratio between the second power wheel and the rotating wheel, and the first power wheel and the second power wheel can be disconnected, so that the second power wheel stops rotating.

[0019] As an optional solution of the drilling device, the drilling device further comprises a limiting mechanism, the driving shaft sleeve is provided with a blocking ring, the limiting mechanism is connected with the second power wheel, the blocking ring can make the second power wheel and the first power wheel disengage in the axial direction through the limiting mechanism, and the second power wheel stops rotating, and the second power wheel is always engaged with the rotating wheel.

[0020] As an optional solution of the drilling device, the shell is provided with a speed reduction assembly on the side away from the first power wheel, the first power wheel is provided with a synchronous groove on the side facing the second power wheel, the second power wheel is provided with a synchronous pin on the side facing the first power wheel, the synchronous pin can be inserted into the synchronous groove, and the second power wheel abuts against the speed reduction assembly to reduce the rotating speed to zero.

[0021] As an optional solution of the drilling device, the limiting mechanism further comprises a limiting rod, the limiting rod is movably arranged in the shell in the axial direction of the driving shaft, the limiting rod is provided with a front stopper and a rear stopper at intervals, the blocking ring is located between the front stopper and the rear stopper, and the limiting rod is drivingly connected with the second power wheel in the axial direction of the second power wheel.

[0022] As an optional solution of the drilling device, the limiting mechanism further comprises a one-way transmission assembly, the one-way transmission assembly comprises:

[0023] a first bevel gear, the first bevel gear is rotatably arranged in the shell, the first bevel gear is eccentrically provided with a driving column, the limiting rod is provided with a driving groove, the driving column is movably arranged in the driving groove, and the first bevel gear can rotate when the limiting rod moves in the axial direction;

[0024] a second bevel gear, the second bevel gear is engaged with the first bevel gear, the second bevel gear is coaxially rotatable with the second power wheel, a side wall of the second bevel gear is provided with an adjusting groove, and the adjusting groove is inclined to the second power wheel in the rotating direction of the forward rotation of the second bevel gear;

[0025] a connecting piece, the connecting piece moves synchronously with the second power wheel in the axial direction, and the connecting piece is provided with a connecting wheel, the connecting wheel is movably arranged in the adjusting groove.

[0026] As an optional solution of the drilling device, the limiting mechanism further comprises an adjusting nut, the adjusting nut is sleeved on the limiting rod and is threadedly connected with the limiting rod, the front stopper is rotatably connected with the adjusting nut, and the front stopper is slidingly abutted against the inner wall of the shell to make the front stopper only move in the axial direction of the limiting rod.

[0027] As an alternative to the above drilling device, the shell comprises an expansion chuck and a pipe body, the expansion chuck is sleeved on the pipe body, and the outer diameter of the pipe body gradually increases in the direction away from the front end of the pipe body.

[0028] Advantages of the present application:

[0029] The present application provides a drilling device. In the drilling device, the driving wheel of the driving mechanism can rotate the driving shaft, and due to the difference in the angular velocity of the driving wheel and the rotated driving wheel, the circumferential angular velocity difference between the rotating wheel and the driving shaft is generated, so that the driving shaft can move axially relative to the rotating wheel, so that the drill bit connected with the driving wheel can rotate and advance to drill. In the process of drilling, the abutting structure of the vibration assembly will pass through the convex part and the concave part in turn, so as to drive the driving shaft to vibrate in the forward and backward directions in the axial direction by the driving mechanism, and to peck the material to be drilled, so as to improve the drilling intensity and reduce the working strength and difficulty of the operator. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic view of the drilling device provided by the present application;

[0031] Figure 2 is a partial sectional view of the drilling device provided by the present application;

[0032] Figure 3 is Figure 2 is a partial enlarged view of A in FIG. 1;

[0033] Figure 4 is an exploded view of the driving mechanism and the vibration assembly provided by the present application;

[0034] Figure 5 is a structural schematic view of the driving wheel provided by the present application;

[0035] Figure 6 is a structural schematic view of the first power wheel and the second power wheel provided by the present application;

[0036] Figure 7 is Figure 2 is a partial enlarged view of B in FIG. 2;

[0037] Figure 8 is a structural schematic view of the expansion chuck and the pipe body provided by the present application.

[0038] In the drawings:

[0039] 1, shell; 2, driving shaft; 3, driving mechanism; 4, vibration assembly; 5, power mechanism; 6, speed reduction assembly; 7, limiting mechanism; 8, one-way transmission assembly; 9, tensioning member;

[0040] 11, fixing structure; 12, main shaft; 13, expansion chuck; 14, pipe body; 15, first motor shell; 16, second motor shell; 17, tensioning motor; 21, blocking ring; 31, driving wheel; 32, rotating wheel; 41, elastic member; 42, vibration ring; 43, abutting structure; 44, blocking ring; 51, driving member; 52, first power wheel; 53, second power wheel; 54, third bevel gear; 55, fourth bevel gear; 71, limiting rod; 72, front stopper; 73, rear stopper; 74, adjusting nut; 75, adjusting rod; 76, adjusting knob; 81, first bevel gear; 82, second bevel gear; 83, connecting member;

[0041] 131, slider; 161, tensioning groove; 311, sliding groove; 312, ball; 313, first wheel body; 314, first sleeving part; 321, second wheel body; 322, second sleeving part; 323, third sleeving part; 421, protruding part; 422, recessed part; 431, roller; 432, roller frame; 521, synchronization groove; 531, synchronization pin; 711, driving groove; 811, driving column; 821, adjusting groove; 831, connecting wheel. DETAILED DESCRIPTION

[0042] Embodiments of the present application are described in detail below with reference to the attached drawings, wherein the same or similar elements are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0043] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0044] Unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" should be understood broadly, for example, it can be fixed connection, or it can be detachable connection; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] Unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0046] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0047] Materials technology is developing rapidly. In various industrial fields, in addition to metals, more and more composite materials are being used. As the application of composite materials becomes more and more extensive, the processing of composite materials becomes more and more important, including the processing of carbon fiber.

[0048] In order to facilitate the drilling operation, this embodiment provides a drilling device, such as Figures 1-3 As shown, the drilling device includes a shell 1, a drive shaft 2 and a drive mechanism 3. Two fixed structures 11 are arranged at intervals in the shell 1. The drive shaft 2 is sequentially passed through the two fixed structures 11 and can rotate. The drive shaft 2 is configured to install a drill bit. The drive mechanism 3 includes a driving wheel 31 and a rotating wheel 32. The driving wheel 31 is sleeved on the driving shaft 2 and rotates coaxially with the driving shaft 2. The rotating wheel 32 is sleeved on the driving shaft 2 and is threadedly connected to the driving shaft 2. The angular velocities of the driving wheel 31 and the rotating wheel 32 are different.

[0049] In the drilling device, the driving wheel 31 of the driving mechanism 3 can rotate the driving shaft 2. Since the driving wheel 31 and the rotating wheel have different angular velocities, there is a circumferential angular velocity difference between the rotating wheel 32 and the driving shaft 2, so that the driving shaft 2 can move axially relative to the rotating wheel 32, so that the drill bit connected to the driving wheel 31 can rotate and move forward to drill.

[0050] It is understandable that due to the high hardness of carbon fiber, when drilling carbon fiber, the drilling time is long and the force required is high, which increases the workload and difficulty of the operator.

[0051] like Figure 3 and Figure 4To solve the above problems, the drilling device further comprises a vibration assembly 4, the vibration assembly 4 comprises an elastic member 41, a vibration ring 42 and an abutting structure 43, the elastic member 41 is arranged between the driving mechanism 3 and one fixed structure 11, the abutting structure 43 is arranged between the driving mechanism 3 and the other fixed structure 11, and the vibration ring 42 is fixedly arranged on the side of the driving wheel 31 facing the abutting structure 43, the side of the vibration ring 42 facing the abutting structure 43 is provided with a protruding portion 421 and a recessed portion 422, and the abutting structure 43 can alternately abut against the protruding portion 421 and the recessed portion 422.

[0052] During drilling, the elastic member 41 can abut the vibration ring 42 against the abutting structure 43, and as the driving shaft 2 rotates, the abutting structure 43 will pass through the protruding portion 421 and the recessed portion 422 in turn, so that the driving shaft 2 is driven by the driving mechanism 3 to vibrate in the forward and backward directions in the axial direction to peck at the carbon fiber, thereby improving the drilling intensity and reducing the working strength and difficulty of the operator.

[0053] As shown in Figure 5 , the side of the driving wheel 31 facing the rotating wheel 32 is provided with a sliding groove 311 in the circumferential direction, the sliding groove 311 is provided with a rolling ball 312, and the rolling ball 312 rolls against the rotating wheel 32. Through the arrangement of the rolling ball 312, the driving wheel 31 and the rotating wheel 32 do not move relative to each other in the axial direction of the driving shaft 2, so that the elastic member 41 can abut the vibration ring 42 against the abutting structure 43 through the abutment of the rotating wheel 32 and the driving wheel 31, thereby realizing the pecking operation during drilling.

[0054] In this embodiment, as shown in Figure 4 , the abutting structure 43 comprises a roller 431 and a roller holder 432, the roller holder 432 is sleeved on the driving shaft 2 and can rotate relative to the driving shaft 2, the roller 431 is rollingly arranged on the roller holder 432, and the roller 431 rollingly abuts against the vibration ring 42. The roller 431 can rotate on the roller holder 432, which makes the roller 431 rollingly abut against the vibration ring 42, and when the roller holder 432 rotates relative to the vibration ring 42, the roller 431 rolls on the axial surface of the vibration ring 42, and when the roller 431 rolls to the protruding portion 421, the driving shaft 2 vibrates forward to the limit, and when the roller 431 rolls to the recessed portion 422, the driving shaft 2 vibrates backward to the limit.

[0055] It is worth noting that one end of the drilling device where the drill bit is installed is the front end, and the opposite end in the axial direction of the driving shaft 2 is the rear end.

[0056] Further, as shown in Figure 4As shown, the vibration ring 42 is circumferentially spaced with a plurality of protruding portions 421, a recess portion 422 is formed between two adjacent protruding portions 421, the abutting structure 43 comprises a plurality of rollers 431, and the plurality of rollers 431 correspond to the plurality of protruding portions 421 one by one. The arrangement of the plurality of rollers 431 and the plurality of protruding portions 421 can uniformly distribute the force received by the driving assembly, and since the distance between the two adjacent protruding portions 421 is reduced, the frequency of the vibration of the driving shaft 2 can be improved, and the effect of the micro pecking operation can be improved.

[0057] In order to reduce the resistance received by the driving shaft 2 when rotating, the two fixing structures 11 are bearings, the outer rings of the two bearings are fixedly connected with the shell 1, the driving wheel 31 comprises a first wheel body 313 and a first sleeving portion 314, the rotating wheel 32 comprises a second wheel body 321 and a second sleeving portion 322, the first sleeving portion 314 and the second sleeving portion 322 extend along the axial direction of the driving shaft 2 and are sleeved on the driving shaft 2, the inner ring of one bearing is sleeved on the first sleeving portion 314, and the inner ring of the other bearing is sleeved on the second sleeving portion 322.

[0058] The inner rings of the two bearings abut against the elastic member 41 and the abutting structure 43 respectively, the elastic member 41 can abut against the rotating wheel 32 to provide an axial force while rotating with the inner ring of the bearing, and the abutting structure 43 can abut against the driving wheel 31 to provide an axial force while rotating with the inner ring of the other bearing, which can not only reduce the resistance received by the driving shaft 2 when rotating, but also serve as a limiting structure for the vibration assembly 4.

[0059] As shown in the figure, Figure 4 The rotating wheel 32 further comprises a third sleeving portion 323, the third sleeving portion 323 is located on the opposite side of the second sleeving portion 322, the third sleeving portion 323 is sleeved on the driving shaft 2, the first wheel body 313 is partially sleeved on the third sleeving portion 323, the ball 312 simultaneously rolls and abuts against the third sleeving portion 323, the second wheel body 321 and the first wheel body 313, which can separate the driving wheel 31 and the rotating wheel 32 along the axial direction and the radial direction of the driving shaft 2, and can also reduce the loss and play a role similar to a bearing.

[0060] Specifically, the elastic member 41 is a round spring, the round spring is sleeved on the second sleeving portion 322, and the round spring abuts against the inner ring of one bearing and the second wheel body 321. The advantage of the round spring is that it can uniformly apply an elastic force to the second wheel body 321 of the rotating wheel 32, prevent the rotating wheel 32 from deviating due to uneven force, and avoid the threads between the rotating wheel 32 and the driving shaft 2 from being stuck.

[0061] As shown in the figure, Figure 4As shown, the vibration assembly 4 further comprises a retaining ring 44 located on the side of the abutting structure 43 away from the vibration ring 42, and the retaining ring 44 abuts the inner ring of the bearing and the abutting structure 43. Since the size of the inner ring of the bearing in the radial direction is small, if the roller 431 rolls against the inner ring of the bearing, the size of the roller 431 will be small, which is easy to cause the height difference between the protruding part 421 and the recessed part 422 to be too small to affect the amplitude of vibration. The arrangement of the retaining ring 44 can make the size of the end of the retaining ring 44 close to the bearing small, so as to abut the inner ring of the bearing, and the size of the end of the retaining ring 44 close to the roller 431 large, so that the size of the roller 431 can be large, thereby ensuring that the driving shaft 2 has sufficient amplitude to perform the micro-pecking operation.

[0062] As shown in Figure 2 and Figure 3 , the drilling device further comprises a power mechanism 5, the power mechanism 5 comprises a driving member 51, a first power wheel 52 and a second power wheel 53, the first power wheel 52 and the second power wheel 53 are coaxially arranged and synchronously rotated, the first power wheel 52 is in transmission connection with the driving wheel 31, the second power wheel 53 is in transmission connection with the rotating wheel 32, and the driving member 51 is in transmission connection with the first power wheel 52.

[0063] Since the first power wheel 52 and the second power wheel 53 are synchronously rotated, the driving member 51 only needs to drive one of the power wheels to rotate, so as to ensure that the first power wheel 52 and the second power wheel 53 can both generate driving force, thereby enabling the driving wheel 31 and the rotating wheel 32 to rotate.

[0064] In the embodiment, as shown in Figure 2 , the drilling device further comprises a first motor housing 15, a power motor is arranged in the first motor housing 15, the first power wheel 52 is coaxially and fixedly provided with a third bevel gear 54, the output shaft of the power motor is connected with a fourth bevel gear 55, and the third bevel gear 54 is in meshing connection with the fourth bevel gear 55. The power motor can drive the first power wheel 52 and the second power wheel 53 to rotate through the third bevel gear 54 and the fourth bevel gear 55, and the arrangement of the bevel gears makes the axis of the output shaft of the motor perpendicular to the axes of the first power wheel 52 and the second power wheel 53, thereby changing the transmission direction of the power. The first motor housing 15 can be used as a handle to hold, and sufficient space can be provided for the arrangement of the power motor.

[0065] Further, as shown in Figure 3 , the power device further comprises a main shaft 12, and the first power wheel 52 and the second power wheel 53 are both sleeved on the main shaft 12 and can rotate on the main shaft 12.

[0066] It can be understood that, since the driving shaft 2 of the drilling device is controlled by the power motor to advance the distance, in actual use, the drilling depth is difficult to control, resulting in over-drilling and affecting the actual effect. To solve the above problems, the transmission ratio between the first power wheel 52 and the driving wheel 31 is greater than the transmission ratio between the second power wheel 53 and the rotating wheel 32, which makes the rotating speed of the driving shaft 2 less than the rotating speed of the rotating wheel 32 when the first power wheel 52 and the second power wheel 53 have the same rotating speed after the power motor is started, and at this time the driving shaft 2 moves forward to drive the drill bit to drill.

[0067] Moreover, the first power wheel 52 and the second power wheel 53 can be disengaged, and the second power wheel 53 is stopped from rotating. That is to say, when the first power wheel 52 and the second power wheel 53 will generate a rotating speed difference due to disengagement, and the second power wheel 53 is stopped from rotating, at this time the rotating speed of the driving shaft 2 is greater than the rotating speed of the rotating wheel 32, at this time the driving shaft 2 moves reversely to drive the drill bit to retract. That is to say, when the first power wheel 52 and the second power wheel 53 are disengaged, the drill bit no longer continues to advance, so as to accurately control the drilling depth.

[0068] As shown in Figure 2 , the drilling device further comprises a limiting mechanism 7, the driving shaft 2 is sleeved with a blocking ring 21, the limiting mechanism 7 is connected with the second power wheel 53, the blocking ring 21 can make the second power wheel 53 and the first power wheel 52 disengage axially through the limiting mechanism 7, and the second power wheel 53 is stopped from rotating, and the second power wheel 53 is always engaged with the rotating wheel 32.

[0069] The blocking ring 21 moves forward with the driving shaft 2, when the blocking ring 21 abuts against the limiting mechanism 7, the limiting mechanism 7 makes the second power wheel 53 and the first power wheel 52 disengage axially, at this time the second power wheel 53 is stopped from rotating, so that the rotating wheel 32 engaged with the second power wheel 53 is stopped from rotating, so as to control the drilling depth by moving the driving shaft 2 backward.

[0070] It can be understood that, if the second power wheel 53 is to be stopped from rotating, a speed reduction assembly 6 needs to be arranged in the shell 1, and the speed reduction assembly 6 is arranged in the shell 1 and located on the side of the second power wheel 53 away from the first power wheel 52. When the second power wheel 53 is disengaged from the first power wheel 52, the second power wheel 53 abuts against the speed reduction assembly 6 to reduce the rotating speed of the second power wheel 53 to zero.

[0071] As shown in Figure 6 , in order to facilitate the disengagement and combination of the first power wheel 52 and the second power wheel 53, a synchronous groove 521 is formed on the side of the first power wheel 52 facing the second power wheel 53, and a synchronous pin 531 is formed on the side of the second power wheel 53 facing the first power wheel 52, the synchronous pin 531 can be inserted into the synchronous groove 521, and the second power wheel 53 abuts against the speed reduction assembly 6 to reduce the rotating speed to zero.

[0072] In the embodiment, as shown in Figure 3 If the second power wheel 53 is always engaged with the rotating wheel 32, the second wheel body 321 of the rotating wheel 32 has a larger axial dimension than the second power wheel 53 to ensure that the second power wheel 53 can always be engaged with the rotating wheel 32 when moving axially to disengage from the first power wheel 52.

[0073] In the embodiment, the speed reduction assembly 6 comprises a friction plate. When the second power wheel 53 moves away from the first power wheel 52 to disengage, the second power wheel 53 can abut against the friction plate and be decelerated to stop rotating under the action of friction.

[0074] As shown in Figure 2 The limiting mechanism 7 further comprises a limiting rod 71 movably arranged in the housing 1 along the axial direction of the driving shaft 2, and the limiting rod 71 is provided with a front stop block 72 and a rear stop block 73 at intervals, the stop ring 21 is located between the front stop block 72 and the rear stop block 73, and the limiting rod 71 is drivingly connected with the second power wheel 53 along the axial direction of the second power wheel 53.

[0075] When the driving shaft 2 moves, the stop ring 21 can abut against the front stop block 72 to move the limiting rod 71 forward, and the synchronous pin 531 is disengaged from the synchronous groove 521, at this time, the moving direction of the driving shaft 2 is changed to move backward, when the stop ring 21 abuts against the rear stop block 73, the limiting rod 71 moves backward, and the synchronous pin 531 is inserted into the synchronous groove 521 again to reset, which is convenient for the operator to use.

[0076] It can be understood that the movement of the second power wheel 53 needs to be driven by the limiting rod 71, but when the stop ring 21 does not abut against the limiting rod 71, it is necessary to ensure that the second power wheel 53 does not move axially to prevent the second power wheel 53 from being abnormally disengaged or combined with the first power wheel 52 due to the vibration of the drilling device, the reaction force of the speed reduction assembly 6, the reaction force of the first power wheel 52, and the like.

[0077] As shown in Figure 2 and Figure 3To achieve the above object, the limiting mechanism 7 further comprises a one-way transmission assembly 8. The one-way transmission assembly 8 comprises a first bevel gear 81, a second bevel gear 82 and a connecting piece 83. The first bevel gear 81 is rotatably arranged in the housing 1. The first bevel gear 81 is eccentrically provided with a driving column 811. The limiting rod 71 is provided with a driving groove 711. The driving column 811 is movably arranged in the driving groove 711. When the limiting rod 71 moves along the axial direction, the first bevel gear 81 can rotate. The second bevel gear 82 is engaged with the first bevel gear 81. The second bevel gear 82 rotates coaxially with the second power wheel 53. The sidewall of the second bevel gear 82 is provided with an adjusting groove 821. The adjusting groove 821 is offset towards the second power wheel 53 along the rotation direction of the forward rotation of the second bevel gear 82. The connecting piece 83 moves synchronously along the axial direction with the second power wheel 53. The connecting piece 83 is provided with a connecting wheel 831. The connecting wheel 831 is movably arranged in the adjusting groove 821.

[0078] Wherein, the rotation direction of the second bevel gear 82 is defined as the forward rotation direction when the limiting rod 71 moves forward. The second bevel gear 82 rotates around the main shaft 12. When the limiting rod 71 moves along the axial direction, the limiting rod 71 can drive the first bevel gear 81 to rotate through the cooperation of the driving groove 711 and the driving column 811.

[0079] Specifically, when the limiting rod 71 moves forward, the first bevel gear 81 rotates, so that the second bevel gear 82 rotates forward. Since the connecting piece 83 can only move along the axial direction of the main shaft 12, at this time, the connecting wheel 831 will move along the adjusting groove 821, so that the distance between the connecting wheel 831 and the first power wheel 52 increases, so that the synchronous pin 531 is separated from the synchronous groove 521, the second power wheel 53 abuts against the friction plate and stops rotating, and the driving shaft 2 moves backward. When the limiting rod 71 moves backward, the first bevel gear 81 rotates, so that the second bevel gear 82 rotates reversely. At this time, the connecting wheel 831 will move along the adjusting groove 821, so that the distance between the connecting wheel 831 and the first power wheel 52 decreases, so that the synchronous pin 531 reinserts into the synchronous groove 521, the first power wheel 52 and the second power wheel 53 rotate synchronously, and the driving shaft 2 moves forward again.

[0080] It can be understood that the second power wheel 53 cannot drive the second bevel gear 82 to rotate by moving along the axial direction, so the one-way transmission assembly 8 can only be actuated by the limiting rod 71.

[0081] In this embodiment, the distance of the forward movement of the driving rod is determined by the relative position of the stop ring 21 and the front stop block 72. The position of the stop ring 21 is determined at the beginning of the design, so the operator can adjust the distance of the forward movement of the driving rod by adjusting the position of the front stop block 72, that is, the drilling depth can be adjusted.

[0082] AsFigure 2 and Figure 7 As shown, the limiting mechanism 7 further includes an adjusting nut 74, which is sleeved on the limiting rod 71 and threadedly connected to the limiting rod 71. The front stopper 72 is rotatably connected to the adjusting nut 74, and the front stopper 72 is in sliding contact with the inner wall of the housing 1 so that the front stopper 72 can only move along the axial direction of the limiting rod 71. When the operator rotates the adjusting nut 74, the adjusting nut 74 can drive the front stopper 72 to move along the axial direction of the limiting rod 71, thereby achieving adjustment of the position of the front stopper 72.

[0083] In order to facilitate the movement of the adjusting nut 74, the limiting mechanism 7 also includes an adjusting rod 75 and an adjusting knob 76. The adjusting rod 75 is rotatably arranged on the outer shell 1. The outer periphery of the adjusting rod 75 is provided with teeth extending axially at intervals along the circumferential direction. The outer periphery of the adjusting nut 74 is also provided with teeth at intervals along the circumferential direction. The adjusting rod 75 is engaged with the adjusting nut 74, and the adjusting knob 76 is engaged with the adjusting rod 75, and the adjusting knob 76 is partially located outside the outer shell 1.

[0084] The operator can rotate the adjustment knob 76 to rotate the adjustment rod 75, thereby rotating the adjustment nut 74 to adjust the position of the front stopper 72. The teeth extending axially along the adjustment rod 75 ensure that the adjustment nut 74 can also engage with the adjustment rod 75 after movement. It is worth noting that there can be multiple adjustment knobs 76, and the multiple adjustment knobs 76 are meshed in sequence to form a chain structure. The adjustment knob 76 at one end of the chain structure is partially located outside the housing 1, and the adjustment knob 76 at the other end of the chain structure is meshed with the adjustment rod 75.

[0085] In actual drilling work, a drilling jig is often used to ensure the accuracy of the drilling position and stability during the drilling operation. The drilling jig is a plate with fixed holes. The plate covers the carbon fiber surface to be drilled. The center of the fixed hole is the location where the hole will be drilled.

[0086] like Figure 1 and Figure 8 As shown, the housing 1 includes an expansion chuck 13 and a tube 14. The expansion chuck 13 is slidably mounted on the tube 14, and the outer diameter of the tube 14 gradually increases in the direction away from the front end of the tube 14. The expansion chuck 13 extends into the fixing hole, and the outer diameter of the expansion chuck 13 is less than or equal to the diameter of the fixing hole. At this time, by moving the expansion chuck 13 and the tube 14, the expansion chuck 13 is expanded through the outer wall of the tube 14 and pressed against the inner wall of the fixing hole, thereby fixing the drilling device. After that, the drilling operation can be carried out.

[0087] In the embodiment, the drilling device further comprises a second motor housing 16 fixed with the housing 1, a tensioning motor 17 arranged in the second motor housing 16, and a tensioning member 9. Opposite side walls of the second motor housing 16 are each provided with a tensioning groove 161 extending along the axial direction of the driving shaft 2. The expansion chuck 13 is provided with a sliding block 131 at each opposite end. Each sliding block 131 is slidingly arranged in a corresponding tensioning groove 161. One end of the tensioning member 9 is pivotally connected with the expansion chuck 13, and the other end of the tensioning member 9 is pivotally connected with an output shaft of the tensioning motor 17. The tensioning member 9 is arranged in an inclined manner relative to the moving direction of the expansion chuck 13. The output shaft of the tensioning motor 17 can drive the tensioning member 9 to move linearly, so that the sliding block 131 slides along the tensioning groove 161.

[0088] The above merely describes the preferred embodiments of the present application, and for those skilled in the art, the specific implementation manner and application scope can be changed according to the idea of the present application, and the content of the description should not be understood as a limitation of the present application.

Claims

1. A drilling device, characterized in that: include: A housing (1), wherein two fixing structures (11) are spaced apart from each other in the housing (1); A drive shaft (2), the drive shaft (2) being sequentially passed through the two fixed structures (11) and being rotatable, the drive shaft (2) being configured to mount a drill bit; A driving mechanism (3), the driving mechanism (3) comprising a driving wheel (31) and a rotating wheel (32), the driving wheel (31) being sleeved on the driving shaft (2) and coaxially rotating with the driving shaft (2), the rotating wheel (32) being sleeved on the driving shaft (2) and threadedly connected to the driving shaft (2), the driving wheel (31) and the rotating wheel (32) having different angular velocities; A vibration assembly (4), comprising an elastic member (41), a vibration ring (42) and an abutment structure (43); the elastic member (41) is arranged between the drive mechanism (3) and one of the fixed structures (11); the abutment structure (43) is arranged between the drive mechanism (3) and another of the fixed structures (11); the vibration ring (42) is fixedly arranged on a side of the drive wheel (31) facing the abutment structure (43); a protrusion (421) and a recess (422) are provided on a side of the vibration ring (42) facing the abutment structure (43); and the abutment structure (43) is capable of alternately abutting against the protrusion (421) and the recess (422).

2. The drilling device according to claim 1, characterized in that A sliding groove (311) is provided on one side of the driving wheel (31) facing the rotating wheel (32) along the circumferential direction. A ball (312) is provided in the sliding groove (311). The ball (312) rolls against the rotating wheel (32).

3. The drilling device according to claim 1, characterized in that The abutment structure (43) comprises a roller (431) and a roller frame (432); the roller frame (432) is sleeved on the drive shaft (2) and can rotate relative to the drive shaft (2); the roller (431) is rollingly arranged on the roller frame (432); and the roller (431) is in rolling abutment with the vibration ring (42).

4. The drilling device according to claim 3, characterized in that The vibration ring (42) is provided with a plurality of protrusions (421) spaced apart along the circumferential direction, and a recessed portion (422) is formed between two adjacent protrusions (421). The abutment structure (43) includes a plurality of rollers (431), and the plurality of rollers (431) correspond one-to-one to the plurality of protrusions (421).

5. The drilling device according to claim 1, characterized in that The two fixed structures (11) are bearings, and the outer rings of the two bearings are fixedly connected to the housing (1). The driving wheel (31) includes a first wheel body (313) and a first sleeve portion (314). The rotating wheel (32) includes a second wheel body (321) and a second sleeve portion (322). The first sleeve portion (314) and the second sleeve portion (322) both extend along the axial direction of the driving shaft (2) and are sleeved on the driving shaft (2). The inner ring of one bearing is sleeved on the first sleeve portion (314), and the inner ring of the other bearing is sleeved on the second sleeve portion (322).

6. The drilling device according to claim 5, characterized in that The elastic member (41) is a circular spring, which is sleeved on the second sleeve portion (322) and abuts against an inner ring of the bearing and the second wheel body (321).

7. The drilling device according to claim 5, characterized in that The vibration assembly (4) further includes a retaining ring (44), which is located on a side of the abutting structure (43) away from the vibration ring (42), and the retaining ring (44) abuts against an inner ring of the bearing and the abutting structure (43).

8. The drilling device according to any one of claims 1 to 7, characterized in that: The drilling device further comprises a power mechanism (5), the power mechanism (5) comprising a driving member (51), a first power wheel (52) and a second power wheel (53), the first power wheel (52) and the second power wheel (53) being coaxially arranged and rotating synchronously, the first power wheel (52) being transmission-connected to the driving wheel (31), the second power wheel (53) being transmission-connected to the rotating wheel (32), and the driving member (51) being transmission-connected to the first power wheel (52).

9. The drilling device according to claim 8, characterized in that The transmission ratio between the first power wheel (52) and the driving wheel (31) is greater than the transmission ratio between the second power wheel (53) and the rotating wheel (32), and the first power wheel (52) and the second power wheel (53) can be disengaged, and the second power wheel (53) can stop rotating.

10. The drilling device according to claim 9, characterized in that The drilling device further comprises a limiting mechanism (7), the driving shaft (2) is sleeved with a retaining ring (21), the limiting mechanism (7) is connected to the second power wheel (53), and the retaining ring (21) can, through the limiting mechanism (7), cause the second power wheel (53) to be axially disengaged from the first power wheel (52) and stop the second power wheel (53) from rotating, and the second power wheel (53) is always engaged with the rotating wheel (32).

11. The drilling device according to claim 10, characterized in that The housing (1) is provided with a reduction assembly (6) on a side of the second power wheel (53) facing away from the first power wheel (52); a synchronization groove (521) is provided on a side of the first power wheel (52) facing the second power wheel (53); a synchronization pin (531) is provided on a side of the second power wheel (53) facing the first power wheel (52); the synchronization pin (531) can be inserted into the synchronization groove (521); and the second power wheel (53) abuts against the reduction assembly (6) to reduce the rotation speed to zero.

12. The drilling device according to claim 11, characterized in that The limiting mechanism (7) further comprises a limiting rod (71), the limiting rod (71) being arranged in the housing (1) along the axial movement of the drive shaft (2), the limiting rod (71) being provided with a front stopper (72) and a rear stopper (73) at intervals, the stop ring (21) being located between the front stopper (72) and the rear stopper (73), and the limiting rod (71) being connected to the second power wheel (53) in an axial transmission manner along the second power wheel (53).

13. The drilling device according to claim 12, characterized in that The limiting mechanism (7) further includes a one-way transmission assembly (8), and the one-way transmission assembly (8) includes: a first bevel gear (81), the first bevel gear (81) being rotatably disposed in the housing (1), the first bevel gear (81) being eccentrically provided with a driving column (811), the limiting rod (71) being provided with a driving groove (711), the driving column (811) being movably disposed in the driving groove (711), and the first bevel gear (81) being able to rotate when the limiting rod (71) moves in the axial direction; a second bevel gear (82) meshing with the first bevel gear (81), the second bevel gear (82) coaxially rotating with the second power wheel (53), a side wall of the second bevel gear (82) being provided with an adjustment groove (821), the adjustment groove (821) being inclined in a direction approaching the second power wheel (53) along the forward rotation direction of the second bevel gear (82); A connecting member (83) is provided, wherein the connecting member (83) and the second power wheel (53) move synchronously along the axial direction, and the connecting member (83) is provided with a connecting wheel (831), and the connecting wheel (831) is movably provided in the adjusting groove (821).

14. The drilling device according to claim 12, characterized in that The limiting mechanism (7) further comprises an adjusting nut (74), the adjusting nut (74) being sleeved on the limiting rod (71) and being threadedly connected to the limiting rod (71), the front stopper (72) being rotatably connected to the adjusting nut (74), and the front stopper (72) being in sliding contact with the inner wall of the housing (1) so that the front stopper (72) can only move along the axial direction of the limiting rod (71).

15. The drilling device according to claim 8, characterized in that The housing (1) comprises an expansion chuck (13) and a tube body (14); the expansion chuck (13) is slidably sleeved on the tube body (14); and the outer diameter of the tube body (14) gradually increases in a direction away from the front end of the tube body (14).

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