CN214867478U

CN214867478U - Drilling device

Info

Publication number: CN214867478U
Application number: CN202022101262.0U
Authority: CN
Inventors: 梁耀; 梁军; 马勇; 张军; 杨坤
Original assignee: Hubei Mingtai Agricultural Machinery Co ltd
Current assignee: Hubei Mingtai electromechanical Co.,Ltd.
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-11-26
Anticipated expiration: 2030-09-22

Abstract

The utility model relates to a drilling device, which comprises a bracket, a driving piece, a transmission component, a gear shifting component and a drilling component, wherein the bracket comprises a top plate, a side plate and a bottom plate; the top plate is provided with a driving block and a first sliding groove, and the placing plate is provided with a blanking hole and a second sliding groove; the driving part comprises a driving motor and a driving gear, and the driving gear is connected with an output shaft of the driving motor; the transmission assembly comprises a transmission gear, a rotating shaft and a transmission part, the transmission gear is meshed with the driving gear, and the rotating shaft is inserted into the driving hole and connected with the transmission gear. The utility model provides a drilling equipment passes through gear engagement's switching, the feed rate of accurate control drill bit.

Description

Drilling device

Technical Field

The utility model relates to a drilling processing field especially relates to a drilling equipment.

Background

Drilling refers to the operation of making a hole in a solid material with a drill bit and also to the formation of a hole in a hard object with a sharp rotating tool. Drilling is widely applied to the field of machining, and generally, a drilling machine is used for drilling a workpiece to be machined.

Most of the existing drilling devices utilize a motor to provide a rotating force for a drill bit, and then utilize equipment such as manpower or an air cylinder to push the drill bit to move towards a direction close to a workpiece to be processed, so that the drill bit is in contact with the workpiece, and the workpiece is drilled.

However, when the conventional drilling machine controls the movement of the drill by manual operation or by means of an air cylinder, the feeding speed of the drill cannot be accurately controlled due to manual experience or the air cylinder. That is, when the drill is manually controlled to move in a direction close to a workpiece to be machined, the control of the feeding speed depends on the experience of an operator, and the accuracy of the equipment such as an air cylinder is low. Therefore, the conventional drilling machine cannot accurately control the feeding speed of the drill.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a drilling equipment solves the problem that current drilling machine can't accurate control drill bit feed rate when drilling.

In order to achieve the above object, the present invention provides a drilling device, including: the gear shifting mechanism comprises a support, a driving piece, a transmission assembly, a gear shifting assembly and a drilling assembly, wherein the support comprises a top plate, a side plate and a bottom plate, the side plate is respectively connected with the top plate and the bottom plate to form a frame body in an enclosing mode, a placing plate is arranged between the top plate and the bottom plate, and the placing plate is connected to the side plate; a driving block and a first sliding groove are formed in one surface, close to the bottom plate, of the top plate, and a blanking hole and a second sliding groove are formed in one surface, close to the top plate, of the placing plate; the driving part comprises a driving motor and a driving gear, the driving motor is connected to one surface of the top plate, which is far away from the bottom plate, and the driving gear is connected with an output shaft of the driving motor; the transmission assembly comprises a transmission gear, a rotating shaft and a transmission part, the transmission gear is meshed with the driving gear, and the rotating shaft is inserted into the driving hole and connected with the transmission gear; the transmission part comprises a sleeve, a first gear and a cylinder, the sleeve is in sliding sleeve joint with the rotating shaft, the first gear is sleeved on the outer surface of the sleeve, and the cylinder is connected to the inner wall of the sleeve; the gear shifting assembly comprises two sliding blocks, two rotating bearings, a second gear, a third gear, a threaded sleeve and a screw rod, the two sliding blocks are respectively positioned in the first sliding chute and the second sliding chute, the two rotating bearings are respectively connected to the two sliding blocks, the screw rod is positioned between the top plate and the placing plate, two ends of the screw rod are respectively inserted into the rotating bearings, the second gear and the third gear are both sleeved on the screw rod, and the threaded sleeve is in threaded fit with the screw rod; the drilling assembly comprises a pressing plate and a drill bit, the pressing plate is located between the top plate and the placing plate, a compensation groove is formed in the pressing plate, the threaded sleeve is located in the compensation groove, the outer wall of the threaded sleeve is in contact with the inner wall of the compensation groove and extends into the compensation groove, the pressing plate is arranged on two opposite planes of the compensation groove, and the drill bit is rotatably connected to one surface, close to the placing plate, of the pressing plate.

Further, the projections of the first sliding groove, the second sliding groove and the compensation groove on the horizontal plane are overlapped.

Further, the driving gear and the transmission gear are both bevel gears.

Further, the reaction support also comprises a guide rail, the guide rail is positioned between the top plate and the placing plate, and two ends of the guide rail are respectively connected with the top plate and the placing plate; the pressing plate is provided with a guide hole, and the guide hole is in sliding fit with the guide rail.

Furthermore, the number of the guide holes and the number of the guide rails are two.

Further, the projection of the driving hole and the projection of the blanking hole on the horizontal plane are concentric.

Further, the rotating hole is annular, and the inner diameter of the cylinder is equal to the outer diameter of the rotating hole.

Further, the screw rod comprises a threaded portion and an inserting portion, the inserting portion is located at two ends of the threaded portion and is respectively inserted into the rotating bearing, and the threaded sleeve is in threaded fit with the threaded portion.

Compared with the prior art, the utility model provides a drilling equipment has following beneficial effect:

through the grafting of cylinder push rod and rotation hole, the rotational speed of lead screw is controlled to the difference of switching gear engagement drive ratio to the rotation control drill bit's of utilizing the lead screw feed speed, when in order to realize drilling different work pieces, the switching of drill bit advancing speed and the accurate control of utilizing the lead screw precision.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the present invention.

Drawings

Fig. 1 is a schematic perspective view of a drilling device according to a first embodiment of the present invention;

FIG. 2 is a perspective view of the bracket of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the stent of FIG. 2;

FIG. 4 is a schematic view of the driving member of FIG. 1;

FIG. 5 is a schematic structural view of the transmission assembly of FIG. 1;

FIG. 6 is a schematic view of the transmission member of FIG. 5;

FIG. 7 is a schematic structural view of the shift assembly of FIG. 1;

FIG. 8 is a schematic structural view of the drilling assembly of FIG. 1;

description of reference numerals: 10. a drilling device; 20. a support; 30. a drive member; 40. a transmission assembly; 50. a shift assembly; 60. a drilling assembly; 21. a top plate; 22. a side plate; 23. a base plate; 24. placing the plate; 211. a drive aperture; 241. a blanking hole; 212. a first chute; 242. a second chute; 31. a drive motor; 32. a drive gear; 41. a transmission gear; 42. a rotating shaft; 43. a transmission member; 421. rotating the hole; 431. a sleeve; 432. a first gear; 433. a connecting seat; 434. a cylinder; 51. a slider; 52. a rotating bearing; 53. a second gear; 54. a third gear; 55. a threaded sleeve; 56. a screw rod; 561. a threaded portion; 562. a plug-in part; 61. pressing a plate; 62. a drill bit; 611. a compensation groove; 612. a guide hole; 25. a guide rail.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-8, a drilling apparatus 10 according to the present invention includes a bracket 20, a driving member 30, a transmission assembly 40, a shift assembly 50, and a drilling assembly 60.

Specifically, the bracket 20 is a frame body, and includes a top plate 21, a side plate 22 and a bottom plate 23, wherein the side plate 22 is connected to the top plate 21 and the bottom plate 23, respectively, to form the frame body. A placing plate 24 is provided between the top plate 21 and the bottom plate 23, and the placing plate 24 is connected to the side plate 22. The top plate 21 is provided with a driving hole 211 and a first sliding chute 212, the placing plate 24 is provided with a blanking hole 241 and a second sliding chute 242, and the projections of the first sliding chute 212 and the second sliding chute 242 on the water surface are overlapped.

It is understood that the driving hole 211 penetrates the top plate 21, the first chute 212 is positioned on a side of the top plate 21 adjacent to the bottom plate 23, the blanking hole 241 penetrates the placing plate 24, and the second chute 242 is positioned on a side of the placing plate adjacent to the top plate 21.

The driving member 30 includes a driving motor 31 and a driving gear 32, the driving motor 31 is connected to a surface of the top plate 21 away from the bottom plate 23, and the driving gear 32 is connected to an output shaft of the driving motor 31.

The transmission assembly 40 includes a transmission gear 41, a rotation shaft 42 and a transmission member 43, the transmission gear 41 is engaged with the driving gear 32, the rotation shaft 42 is inserted into the driving hole 211 and connected to the transmission gear 41, so that when the driving motor 31 operates, the rotation shaft 42 is driven to rotate by the engagement of the driving gear 32 and the transmission gear 41.

It is understood that the rotation connection between the rotation shaft 42 and the driving hole 211 can be realized by providing a bearing between the rotation shaft 42 and the driving hole 211, or by directly using the rotation shaft 42 to rotatably cooperate with the driving hole 211, as long as it is ensured that the rotation shaft 42 only rotates in the driving hole 211 and does not move along the axial direction of the driving hole 211.

The rotating shaft 42 is provided with at least two rotating holes 421 penetrating through the rotating shaft 42, the transmission member 43 comprises a sleeve 431, a first gear 432, a connecting seat 433 and a cylinder 434, the sleeve 431 is in sliding sleeve connection with the rotating shaft 42, the first gear 432 is sleeved on the outer surface of the sleeve 431, and the connecting seat 433 is connected with the sleeve 431. When the sleeve 431 slides along the rotating shaft 42 until the cylinder 434 is aligned with one of the rotating holes 421, the cylinder 434 operates, and the push rod thereof is inserted into the rotating hole 421, so that the sleeve 431 can rotate along with the rotating shaft 42, that is, the first gear 432 rotates along with the rotating shaft 42.

The gear shift assembly 50 includes two sliding blocks 51, a rotating bearing 52, a second gear 53, a third gear 54, a threaded sleeve 55 and a lead screw 56, the two sliding blocks 51 are respectively located in the first sliding slot 212 and the second sliding slot 242, and can slide in the first sliding slot 212 and the second sliding slot 242. The number of the rotating bearings 52 is also two, the two rotating bearings are respectively connected to the two sliding blocks 51, the screw rod 56 is located between the top plate 21 and the placing plate 24, and two ends of the screw rod 56 are respectively inserted into the rotating bearings 52. The second gear 53 and the third gear 54 are both sleeved on the screw rod 56, so that the second gear 53 or the third gear 54 is meshed with the first gear 432 to form transmission, and the screw rod 56 is driven to rotate when the driving motor 31 works. The threaded sleeve 55 is sleeved on the screw rod 56 and is in threaded fit with the screw rod 56.

It will be appreciated that there is a distance H between the second gear 53 and the third gear 54, and a distance L between two adjacent rotation holes 421 on the rotation shaft 42, the distance H being equal to the distance L, so that when the sleeve 431 slides on the rotation shaft 42, the cylinder 434 moves from a position aligned with one rotation hole 421 to a position aligned with the other rotation hole 421, corresponding to the position where the second gear 53 or the third gear 54 meshes with the first gear 432, respectively.

It can be understood that the numbers of teeth of the second gear 53 and the third gear 54 are different, so that when the second gear 53 or the third gear 54 is engaged with the first gear 432, respectively, the transmission is different, and therefore, the rotation speed of the lead screw 56 is different under the driving of the driving motor 31 with the same power.

The drilling assembly 60 includes a pressing plate 61 and a drill 62, the pressing plate 61 is located between the top plate 21 and the placing plate 24, a compensation groove 611 is formed on the pressing plate 61, the compensation groove 611 penetrates through the pressing plate 61, and the threaded sleeve 55 is located in the compensation groove 611 and is in sliding fit with the compensation groove 611, so that the threaded sleeve 55 can slide in the compensation groove 611. The drill 62 is rotatably connected to one surface of the pressing plate 61 close to the placing plate 24, and when the screw rod 56 rotates, the threaded sleeve 55 moves on the screw rod 56 through threaded transmission so as to drive the pressing plate 61 to move towards the direction close to or away from the placing plate 24, that is, drive the drill 62 to move towards the direction close to or away from the placing plate 24, so that the drill 62 is matched with the blanking hole 241 to drill a workpiece.

It can be understood that, due to the different transmission ratios when the second gear 53 or the third gear 54 is meshed with the first gear 432 respectively, the moving speed of the threaded sleeve 55 on the threaded rod 56, that is, the moving speed of the drill 62, can be switched by using the different rotation speeds of the threaded rod 56 caused by the meshing of the second gear 53 or the third gear 54 with the first gear 432, so that the feeding speed of the drill 62 is different for different workpieces to be processed during drilling, so as to improve the accuracy of drilling.

It can be understood that the projection of the compensation groove 611 on the horizontal plane coincides with the projection of the first sliding chute 212 and the second sliding chute 242 on the horizontal plane, so that when the sliding block 51 slides in the first sliding chute 212 and the second sliding chute 242 respectively, the screw rod 56 slides in the compensation groove 611 through the threaded sleeve 55.

It will be appreciated that the drill 62 may be coupled to the platen 61 by a motor or other device to rotate the drill 62 while drilling the workpiece.

It can be understood that, in this embodiment, the threaded sleeve 55 is located in the compensation groove 611, the outer wall of the threaded sleeve is in contact with the inner wall of the compensation groove 611, and both ends of the threaded sleeve extend from the compensation groove 611 to two opposite planes of the pressure plate 61 where the compensation groove 611 is located, so that the threaded sleeve 55 can drive the pressure plate 61 to move together when moving on the screw rod 56 along the axial direction of the screw rod 56 through the threaded transmission.

Further, the driving gear 32 and the transmission gear 41 are both bevel gears.

Further, the bracket 20 further includes a guide rail 25, the guide rail 25 is located between the top plate 21 and the placing plate 24, and two ends of the guide rail 25 are respectively connected to the top plate 21 and the placing plate 24. The pressing plate 61 is provided with a guide hole 612, and the guide hole 612 is in sliding fit with the guide rail 25 so as to limit the pressing plate 61 to rotate along the axial direction of the screw rod 56 through the guide rail 25.

Further, the number of the guide rails 25 and the number of the guide holes are both two, so that the rotation of the pressure plate 61 in the axial direction of the screw 56 is further restricted.

Further, the driving hole 211 is concentric with the projection of the blanking hole 241 on the horizontal plane.

Further, the number of the connecting bases 433 is two, the two connecting bases 433 are located on two opposite sides of the sleeve 431, the number of the air cylinders 434 is also two, the two air cylinders 434 are connected to the two connecting bases 433, magnets (not shown) with opposite magnetic poles are arranged on the push rods of the two air cylinders 434, so that when the air cylinders 434 work, and after the push rods are inserted into the rotating holes 421, the push rods of the two air cylinders 434 are in contact with each other and are magnetically adsorbed.

Further, the screw rod 56 includes a screw portion 561 and an insertion portion 562, the insertion portion 562 is located at two ends of the screw portion 561 and is respectively inserted into the rotating bearing 52, and the thread sleeve 55 is in thread fit with the screw portion 561.

The utility model discloses a theory of operation does: when a workpiece needs to be drilled, the driving motor 31 works to drive the rotating shaft 42 to rotate through the meshing of the driving gear 32 and the transmission gear 41. The sleeve 431 is slid on the rotary shaft 42 to a position where the cylinder 434 is aligned with one of the rotary holes 421, and the cylinder 434 is operated such that the push rod of the cylinder 434 is inserted into the rotary hole 421, thereby rotating the first gear 432 together with the rotary shaft 42. Then, the sliding block 51 slides in the first sliding slot 212 and the second sliding slot 242 to a position where the second gear 53 or the third gear 54 is engaged with the first gear 432, so as to drive the screw rod 56 to rotate. And finally, through the thread fit between the screw rod 56 and the thread bush 55, the thread bush 55 is utilized to drive the drill bit on the pressure plate 61 to move so as to be matched with the blanking hole 241 to drill the workpiece. When different workpieces are drilled, the position of the sleeve 431 on the rotating shaft 42 only needs to be adjusted, so that the gears meshed with the first gear 432 are switched, and the switching of the rotating speed of the screw rod 56, namely the switching of the feeding speed of the drill 62, can be realized through the difference of the transmission ratio.

Claims

1. A drilling apparatus, comprising:

the gear shifting mechanism comprises a support, a driving piece, a transmission assembly, a gear shifting assembly and a drilling assembly, wherein the support comprises a top plate, a side plate and a bottom plate, the side plate is respectively connected with the top plate and the bottom plate to form a frame body in an enclosing mode, a placing plate is arranged between the top plate and the bottom plate, and the placing plate is connected to the side plate; the top plate is provided with a driving hole, one surface of the top plate, which is close to the bottom plate, is provided with a driving block and a first sliding groove, and one surface of the placing plate, which is close to the top plate, is provided with a blanking hole and a second sliding groove;

the driving part comprises a driving motor and a driving gear, the driving motor is connected to one surface of the top plate, which is far away from the bottom plate, and the driving gear is connected with an output shaft of the driving motor;

the transmission assembly comprises a transmission gear, a rotating shaft and a transmission part, the transmission gear is meshed with the driving gear, the rotating shaft is inserted into the driving hole and is connected with the transmission gear, and at least two rotating holes penetrating through the rotating shaft are formed in the rotating shaft; the transmission part comprises a sleeve, a first gear, a connecting seat and an air cylinder, the sleeve is in sliding sleeve joint with the rotating shaft, the first gear is sleeved on the outer surface of the sleeve, the connecting seat is connected with the sleeve, and the air cylinder is connected to the connecting seat so as to be inserted into the rotating hole through a push rod of the air cylinder to fix the sleeve on the rotating shaft;

the gear shifting assembly comprises two sliding blocks, two rotating bearings, a second gear, a third gear, a threaded sleeve and a screw rod, the two sliding blocks are respectively positioned in the first sliding chute and the second sliding chute, the two rotating bearings are respectively connected to the two sliding blocks, the screw rod is positioned between the top plate and the placing plate, two ends of the screw rod are respectively inserted into the rotating bearings, the second gear and the third gear are both sleeved on the screw rod, and the threaded sleeve is in threaded fit with the screw rod;

the drilling assembly comprises a pressing plate and a drill bit, the pressing plate is located between the top plate and the placing plate, a compensation groove is formed in the pressing plate, the threaded sleeve is located in the compensation groove, the outer wall of the threaded sleeve is in contact with the inner wall of the compensation groove and extends into the compensation groove, the pressing plate is arranged on two opposite planes of the compensation groove, the drill bit is rotatably connected to the pressing plate, is close to one face of the placing plate, and can be connected to the pressing plate through a motor so as to drive the drill bit to rotate when a workpiece is drilled.

2. A drilling apparatus according to claim 1, wherein:

the projections of the first sliding groove, the second sliding groove and the compensation groove on the horizontal plane are overlapped.

3. A drilling apparatus according to claim 1, wherein:

the driving gear and the transmission gear are both bevel gears.

4. A drilling apparatus according to claim 1, wherein:

the support also comprises a guide rail, the guide rail is positioned between the top plate and the placing plate, and two ends of the guide rail are respectively connected with the top plate and the placing plate;

the pressing plate is provided with a guide hole, and the guide hole is in sliding fit with the guide rail.

5. A drilling apparatus according to claim 4, wherein:

the guide holes and the guide rails are two in number.

6. A drilling apparatus according to claim 1, wherein:

the projection of the driving hole and the projection of the blanking hole on the horizontal plane are concentric.

7. A drilling apparatus according to claim 1, wherein:

the number of the connecting seats is two, the connecting seats are respectively located on two opposite sides of the sleeve, the number of the air cylinders is also two, the air cylinders are respectively connected to the two connecting seats, and magnets with opposite magnetic poles are arranged on push rods of the two air cylinders.

8. A drilling apparatus according to claim 1, wherein:

the screw rod comprises a threaded portion and an inserting portion, the inserting portion is located at two ends of the threaded portion and is respectively inserted into the rotating bearing, and the threaded sleeve is in threaded fit with the threaded portion.