CN112476647A

CN112476647A - Wood drilling tool

Info

Publication number: CN112476647A
Application number: CN202011485367.9A
Authority: CN
Inventors: 吴秀梅; 俞畅红; 黄小冬
Original assignee: Hangzhou Liujin Luliang Space Design Co ltd
Current assignee: Hangzhou Liujin Luliang Space Design Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-03-12
Anticipated expiration: 2040-12-16
Also published as: CN112476647B

Abstract

The invention belongs to the technical field of wood drilling, and particularly relates to a wood drilling tool which comprises a drilling barrel module and a percussion drill body, wherein the drilling barrel module is detachably arranged on an output shaft of the percussion drill body; the invention can control whether the two clamping blocks are matched with the two clamping grooves or not by controlling the two clamping blocks to slide along the radial direction of the drill cylinder, when the two clamping blocks are matched with the two clamping grooves, the percussion drill body is controlled to rotate and output, the output shaft of the percussion drill body rotates to drive the connecting rotating shaft to rotate, the connecting rotating shaft rotates to drive the two clamping blocks to rotate around the axis of the drill cylinder through the matching of the clamping blocks and the clamping grooves, the two clamping blocks rotate to drive the mounting block to rotate, and the mounting block rotates to drive the drill cylinder to rotate, so that the wood drilling treatment is realized. According to the invention, after the drill cylinder is clamped, the inner wood is crushed by the inner impact rod, so that the drill cylinder recovers the capability of continuously drilling, the smoothness of the inner wall of the drilled round hole is ensured without damage, and a better anti-clamping effect is achieved.

Description

Wood drilling tool

Technical Field

The invention belongs to the technical field of wood drilling, and particularly relates to a wood drilling tool.

Background

The wood is a natural green environment-friendly material and is suitable for various decoration styles. People are pursuit to have a healthy, green and comfortable living environment; the wood product has the following advantages:

first, the precious wood in a natural growing environment forms a unique and aesthetically pleasing texture due to differences in climate, soil, and tree species. After being carefully designed and processed, the decorative board has aesthetic property.

Second, wood is a natural porous material; therefore, the wooden door has a good sound insulation function. Friends who like wooden furniture can not easily find out that own residence has small echo and good sound insulation effect. The living space can bring comfortable and quiet feeling to people.

Third, natural wood gives off a fragrant smell after sawing, and scientists find that different species of trees release different flavors with different effects. Some can kill bacteria and insects; some can stimulate spirits; some may calm nerves.

Fourthly, the wood has certain functions of moisture absorption and moisture desorption, so the wood building material has certain regulation effect on the indoor humidity. If the humidity of the indoor air is too high, the wood absorbs part of the moisture from the air, and conversely releases the moisture. This is beneficial to create a comfortable living environment for your and family members.

In the wood processing process, large round holes are often processed, and a cylindrical drill bit is generally used; in the processing process of the cylindrical drill bit, the inner circular surface and the outer circular surface of the drill bit are subjected to larger friction force, so that the drill bit is easy to be stuck, and in the prior art, the power of the percussion drill body is increased, so that the cost is increased by increasing the power; the other is knocking and withdrawing, and the hole wall is damaged in the withdrawing process, so that the quality of the formed hole is influenced.

The present invention is directed to a wood-drilling tool that solves the above problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a wood drilling tool which is realized by adopting the following technical scheme.

A wood drilling tool comprises a drill barrel module and a percussion drill body, wherein the drill barrel module is detachably arranged on an output shaft of the percussion drill body; the drill cylinder module comprises a connecting rotating shaft, a drill cylinder, a clamping block, a connecting sliding block, an impact block and a spiral driving structure, wherein the connecting rotating shaft is detachably mounted on an output shaft of the percussion drill body; one end of the drill cylinder is provided with teeth, the other end of the drill cylinder is fixedly provided with an installation block, the installation block is provided with a shaft hole communicated with the drill cylinder, the installation block is provided with two sliding grooves which are symmetrically distributed and communicated with the shaft hole, one side of each of the two sliding grooves is provided with a second installation groove, the inner circular surface of the drill cylinder is provided with an annular groove, and the inner circular surface of the annular groove is uniformly provided with three sliding grooves in the circumferential direction; the drill cylinder is arranged on the mounting rotating shaft through the sliding fit of the shaft hole and the mounting rotating shaft; the two clamping blocks are slidably arranged in two sliding grooves formed in the mounting block, and a first spring is respectively arranged between each clamping block and each second mounting groove; the first spring is an extension spring and has pretension; the two clamping blocks are matched with the two clamping grooves on the installation rotating shaft; the two clamping blocks can be controlled to be matched with the two clamping grooves formed in the mounting rotating shaft or not by manually pulling the two clamping blocks.

The mounting structure is slidably mounted in the drill barrel, a plurality of second transmission blocks are circumferentially and uniformly slidably mounted at one end of the mounting structure, a second spring is mounted between each second transmission block and the mounting structure, and the sliding track direction of each second transmission block is the radial direction of the mounting structure; the second transmission blocks are matched with the first transmission blocks in a one-to-one corresponding mode; one end of the mounting structure is fixedly provided with a spiral driving structure, the spiral driving structure consists of a transmission spiral structure and a spiral spring, one end of the transmission spiral structure is fixedly arranged on the mounting structure, one end of the spiral spring is fixedly arranged on the transmission spiral structure, and the other end of the spiral spring is rotatably arranged on the end surface of the annular groove; three groups of connecting sliding blocks are fixedly arranged on the outer circular surface of the impact block in a spiral circumferential distribution manner, the impact block is arranged in the drill cylinder through the sliding fit of the three groups of connecting sliding blocks and three sliding grooves formed in the drill cylinder, and the three groups of connecting sliding blocks penetrate through adjacent spiral rings in the transmission spiral structure; when the connecting slide block does not penetrate through the transmission spiral structure, adjacent spiral coils in the transmission spiral structure are in close contact.

As a further improvement of the technology, the output shaft of the percussion drill body is a hollow shaft, and the inner circular surface is provided with internal threads; a first hexagonal ring is fixedly mounted on an output shaft of the percussion drill body; the outer circular surface of connecting pivot one end has the external screw thread, and the one end fixed mounting who connects the pivot and have the external screw thread has the second hexagonal ring, connects the pivot and passes through the internal screw thread screw-thread fit and the output shaft of churning drill body on external screw thread and the output shaft.

As a further improvement of the technology, one end of the connecting rotating shaft, which is positioned in the drill cylinder, is provided with a mounting ring, and a plurality of first transmission blocks are uniformly arranged on the inner circular surface of the mounting ring in the circumferential direction; the mounting structure consists of a mounting ring which is slidably mounted on the inner circular surface of the drill cylinder and a mounting disc which is fixedly mounted through a plurality of uniformly distributed connecting plates, a mounting column is fixedly mounted on the mounting disc, a plurality of mounting chutes are uniformly formed in the circumferential direction on the outer circular surface of the mounting column, a second transmission block is slidably mounted in each mounting chute, and a second spring is mounted between each second transmission block and the corresponding mounting chute; the second transmission blocks are matched with the first transmission blocks in a one-to-one correspondence manner.

As a further improvement of the technology, a limiting ring which has a limiting effect on the sliding of the mounting structure towards the percussion drill body is fixedly arranged in the drill cylinder.

As a further improvement of the technology, a plurality of square notches are uniformly formed in the circumferential direction on the outer circular surface of one end, close to the percussion drill body, of the drill cylinder.

As a further improvement of the technology, one side of each of the two sliding grooves formed in the mounting block, which is far away from the axis of the drill cylinder, is provided with a first mounting groove, and one side of each of the two first mounting grooves is provided with a swinging groove penetrating through the mounting block.

The one end that the shaft hole was kept away from to two fixture blocks is fixed mounting respectively has a mounting panel, mounting panel and the second mounting groove sliding fit that corresponds, and the one end fixed mounting of two first springs is on the mounting panel that corresponds, and the other end fixed mounting of two first springs is on the terminal surface of the second mounting groove that corresponds.

The upper end face and the lower end face of each extrusion block are provided with cambered surfaces, the two extrusion blocks are respectively eccentrically and swingably mounted in two first mounting grooves, the two extrusion blocks are matched with the two fixture blocks, the straight surfaces of the two extrusion blocks facing the drill bit are correspondingly matched with one ends of the two fixture blocks far away from the drill bit in the state that the fixture blocks are matched with the clamping grooves, after the two extrusion blocks swing upwards by ninety degrees, the cambered surfaces on the two extrusion blocks are matched with the two fixture blocks, at the moment, the distance between the contact points of the upper cambered surfaces of the extrusion blocks and the corresponding fixture blocks and the swing center of the extrusion blocks is smaller than that between the contact points of the extrusion blocks and the corresponding fixture blocks and the swing center of the extrusion blocks in the state that the; one end of each of the two extrusion blocks is fixedly provided with a swing rod, and the two swing rods are matched with the two swing grooves respectively.

As a further improvement of the technology, one end of the impact block, which is far away from the percussion drill body, is uniformly provided with a plurality of mounting circular grooves, each mounting circular groove is internally provided with an impact rod in a sliding manner, and a third spring is respectively arranged between each impact rod and the inner end surface of the corresponding mounting circular groove; and one end of each impact rod, which is far away from the mounting circular groove, is provided with a sharp corner.

As a further improvement of the present technology, the third spring is a compression spring.

As a further improvement of the technology, one end of the first transmission block, which is far away from the connecting rotating shaft, is provided with symmetrically distributed first inclined planes, one end of the second transmission block, which penetrates out of the corresponding mounting sliding groove, is provided with symmetrically distributed second inclined planes towards the front of the percussion drill body, two side faces, which are adjacent to the front of the percussion drill body, of the second transmission block are provided with third inclined planes, after the second transmission block is matched with the first transmission block, the first transmission block stirs the second transmission block to drive the drill cylinder to rotate, and the third inclined planes of the two side faces of the first transmission block and the second transmission block are matched in the stirring direction.

As a further improvement of the present technology, the coil spring is a compression spring and has a pre-pressure.

Compared with the traditional wood drilling technology, the wood drilling device has the following beneficial effects:

1. the invention can control whether the two clamping blocks are matched with the two clamping grooves or not by controlling the two clamping blocks to slide along the radial direction of the drill cylinder, when the two clamping blocks are matched with the two clamping grooves, the percussion drill body is controlled to rotate and output, the output shaft of the percussion drill body rotates to drive the connecting rotating shaft to rotate, the connecting rotating shaft rotates to drive the two clamping blocks to rotate around the axis of the drill cylinder through the matching of the clamping blocks and the clamping grooves, the two clamping blocks rotate to drive the mounting block to rotate, and the mounting block rotates to drive the drill cylinder to rotate, so that the wood drilling treatment is realized.

2. According to the invention, after the drill cylinder is clamped, the inner wood is crushed by the inner impact rod, so that the drill cylinder recovers the capability of continuously drilling, the smoothness of the inner wall of the drilled round hole is ensured without damage, and a better anti-clamping effect is achieved.

Drawings

Fig. 1 is an external view of an entire part.

Fig. 2 is a schematic view of the overall component distribution.

Fig. 3 is a schematic structural view of the percussion drill body.

Fig. 4 is a schematic view of a connecting shaft structure.

Fig. 5 is a schematic view of the structure of the drill barrel.

Fig. 6 is a schematic diagram of the cartridge driving.

Fig. 7 is a schematic view of a second drive block installation.

Fig. 8 is a schematic structural view of the screw driving structure.

Figure 9 is a striker bar installation schematic.

Number designation in the figures: 1. a drill barrel module; 2. a percussion drill body; 3. connecting the rotating shaft; 4. a first hexagonal ring; 5. an output shaft; 6. a second hexagonal ring; 7. a card slot; 8. installing a circular ring; 9. a first transmission block; 10. a first inclined plane; 11. connecting the sliding block; 12. drilling a barrel; 13. a clamping block; 14. a limiting ring; 15. an impact block; 16. a screw drive structure; 17. a chute; 18. a square notch; 19. an annular groove; 20. a shaft hole; 21. a swinging groove; 22. a first mounting groove; 23. a second mounting groove; 24. a sliding groove; 25. extruding the block; 26. a swing rod; 27. mounting blocks; 28. mounting a plate; 29. a first spring; 30. a second transmission block; 31. a mounting structure; 32. a mounting ring; 33. a connecting plate; 34. a second spring; 35. mounting a column; 36. installing a chute; 37. mounting a disc; 38. a drive screw structure; 39. a coil spring; 40. a striker bar; 41. installing a circular groove; 42. a third spring; 43. a second inclined plane; 44. a third inclined plane.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples or figures are illustrative of the present invention and are not intended to limit the scope of the present invention.

The rotating shaft of the percussion drill body 2 can output pure rotary motion and can also output rotary motion and percussion motion, and the frequency of the rotary motion and the percussion motion has a certain proportion.

As shown in fig. 1 and 2, the impact drill comprises a drill barrel module 1 and an impact drill body 2, wherein the drill barrel module 1 is detachably arranged on an output shaft 5 of the impact drill body 2; the drill cylinder module 1 comprises a connecting rotating shaft 3, a drill cylinder 12, a clamping block 13, a connecting sliding block 11, an impact block 15 and a spiral driving structure 16, wherein the connecting rotating shaft 3 is detachably mounted on an output shaft 5 of the percussion drill body 2, as shown in fig. 4, two clamping grooves 7 are uniformly formed in the circumferential direction on the outer circular surface of the connecting rotating shaft 3, and a plurality of first transmission blocks 9 are uniformly arranged in the circumferential direction at one end of the connecting rotating shaft 3; as shown in fig. 5, one end of the drill cylinder 12 has teeth, the other end of the drill cylinder 12 is fixedly provided with a mounting block 27, the mounting block 27 is provided with a shaft hole 20 communicated with the drill cylinder 12, the mounting block 27 is provided with two sliding grooves 24 which are symmetrically distributed and communicated with the shaft hole 20, one side of each of the two sliding grooves 24 is provided with a second mounting groove 23, the inner circular surface of the drill cylinder 12 is provided with an annular groove 19, and the inner circular surface of the annular groove 19 is uniformly provided with three sliding grooves 17 in the circumferential direction; the drill barrel 12 is arranged on the mounting rotating shaft through the sliding fit of the shaft hole 20 and the mounting rotating shaft; as shown in fig. 2 and 6, the two latch blocks 13 are slidably mounted in the two sliding grooves 24 formed in the mounting block 27, and a first spring 29 is respectively mounted between each of the two latch blocks 13 and each of the two second mounting grooves 23; the first spring 29 is an extension spring and has a pretension; the two clamping blocks 13 are matched with the two clamping grooves 7 on the mounting rotating shaft; the two clamping blocks 13 can be manually pulled to control whether the two clamping blocks 13 are matched with the two clamping grooves 7 formed in the mounting rotating shaft.

Whether the two fixture blocks 13 are matched with the two clamping grooves 7 or not can be controlled by controlling the two fixture blocks 13 to slide along the radial direction of the drill cylinder 12, when the two fixture blocks 13 are matched with the two clamping grooves 7, the percussion drill body 2 is controlled to rotate and output, the output shaft 5 of the percussion drill body 2 rotates to drive the connecting rotating shaft 3 to rotate, the connecting rotating shaft 3 rotates to drive the two fixture blocks 13 to rotate around the axis of the drill cylinder 12 through the matching of the fixture blocks 13 and the clamping grooves 7, the two fixture blocks 13 rotate to drive the mounting block 27 to rotate, and the mounting block 27 rotates to drive the drill cylinder 12 to rotate, so that the wood drilling treatment is realized; in the drilling process, if the drilling cylinder 12 is clamped by wood due to friction between the drilling cylinder 12 and the wood, the two clamping blocks 13 are manually controlled to slide towards one end away from the axis of the drilling cylinder 12, so that the two clamping blocks 13 are separated from the two clamping grooves 7, the connecting rotating shaft 3 can be pushed to slide in the drilling cylinder 12 relative to the drilling cylinder 12, the first transmission block 9 arranged on the connecting rotating shaft 3 is inserted between the second transmission blocks 30 arranged on the mounting structure 31 in a nested manner, at the moment, the connecting rotating shaft 3 rotates to drive the second transmission block 30 to rotate around the axis of the drilling cylinder 12 through the first transmission block 9, and the second transmission block 30 rotates to drive the mounting structure 31 to rotate.

As shown in fig. 2, the mounting structure 31 is slidably mounted in the drill barrel 12, as shown in fig. 7, one end of the mounting structure 31 is circumferentially and uniformly slidably mounted with a plurality of second transmission blocks 30, a second spring 34 is mounted between the second transmission block 30 and the mounting structure 31, and the sliding track direction of the second transmission block 30 is the radial direction of the mounting structure 31; the second transmission blocks 30 are correspondingly matched with the first transmission blocks 9 one by one; as shown in fig. 2 and 8, one end of the mounting structure 31 is fixedly mounted with the spiral driving structure 16, the spiral driving structure 16 is composed of a transmission spiral structure 38 and a spiral spring 39, one end of the transmission spiral structure 38 is fixedly mounted on the mounting structure 31, one end of the spiral spring 39 is fixedly mounted on the transmission spiral structure 38, and the other end of the spiral spring 39 is rotatably mounted on the end surface of the annular groove 19; as shown in fig. 9, three sets of connecting sliding blocks 11 are circumferentially and fixedly mounted on the outer circumferential surface of the impact block 15 in a spiral shape, as shown in fig. 2, the impact block 15 is mounted in the drill barrel 12 by sliding fit of the three sets of connecting sliding blocks 11 and three sliding grooves 17 formed in the drill barrel 12, and the three sets of connecting sliding blocks 11 pass through adjacent spiral coils in the transmission spiral structure 38; when the connecting slide 11 does not pass through the transmission screw structure 38, adjacent coils in the transmission screw structure 38 are in close contact with each other.

The drive screw 38 of the present invention is a structure similar to the coil spring 39, but is relatively stiff and can drive rotation and impact forces.

According to the invention, when the mounting structure 31 rotates, the mounting structure 31 can drive the transmission spiral structure 38 to rotate, and because the three groups of connecting sliding blocks 11 pass through adjacent spiral coils in the transmission spiral structure 38 and the three groups of connecting sliding blocks 11 are in sliding fit with the three sliding grooves 17 formed in the drill barrel 12, the three groups of connecting sliding blocks 11 can be driven to slide along the axis of the drill barrel 12 when the transmission spiral structure 38 rotates, and the three groups of connecting sliding blocks 11 slide to drive the impact block 15 to slide. When the connecting slide block 11 passes through the transmission spiral structure 38, two adjacent spirals are separated by a certain distance, but otherwise, two adjacent spirals in the transmission spiral structure 38 are in a close contact state under the action of the pre-pressure force of the spiral spring 39, so that the transmission spiral structure 38 can transmit impact force. The function of the helical spring 39 is to play a role of resetting and clamping the transmission helical structure 38 after being propped by the connecting slide block 11.

The helical spring 39 is a compression spring and has a pre-pressure, by which a pressing force is provided to the transmission helical structure 38, so as to ensure the stability of the transmission helical structure 38 in driving the impact block 15 to slide during rotation.

As shown in fig. 3, the output shaft 5 of the percussion drill body 2 is a hollow shaft, and has an internal thread on the inner circumferential surface; a first hexagonal ring 4 is fixedly arranged on an output shaft 5 of the percussion drill body 2; as shown in fig. 4, an external thread is provided on the outer circumferential surface of one end of the connection rotation shaft 3, a second hexagonal ring 6 is fixedly mounted on the end of the connection rotation shaft 3 having the external thread, and the connection rotation shaft 3 is connected to the output shaft 5 of the percussion drill body 2 through the thread fit of the external thread and the internal thread on the output shaft 5. The first hexagonal ring 4 and the second hexagonal ring 6 are used for conveniently connecting the rotating shaft 3 and the output shaft 5 of the percussion drill body 2, clamping the first hexagonal ring 4 through an auxiliary tool, and then rotating the drill cylinder module 1 through the second hexagonal ring 6 to enable the rotating shaft 3 to be connected with the output shaft 5 of the percussion drill body 2.

As shown in fig. 4, the end of the connecting shaft 3 located in the drill barrel 12 is provided with a mounting ring 8, and a plurality of first transmission blocks 9 are uniformly arranged on the inner circumferential surface of the mounting ring 8 in the circumferential direction; the mounting structure 31 is composed of a mounting ring 32 which is slidably mounted on the inner circular surface of the drill cylinder 12 and a mounting plate 37 which is fixedly mounted on the mounting plate 37 through a plurality of uniformly distributed connecting plates 33, a mounting column 35 is fixedly mounted on the mounting plate 37, a plurality of mounting chutes 36 are uniformly arranged on the outer circular surface of the mounting column 35 in the circumferential direction, a second transmission block 30 is slidably mounted in each mounting chute 36, and second springs 34 are mounted between the second transmission block 30 and the corresponding mounting chute 36; the second transmission blocks 30 are correspondingly matched with the first transmission blocks 9 one by one.

The second spring 34 is used for providing a restoring force to the second transmission block 30 on one hand, and providing a resistance to the second transmission block 30 entering the mounting post 35 when the mounting ring 32 drives the mounting post 35 to rotate, i.e. the first transmission block 9 shifts the second transmission block 30, so as to ensure that the transmission screw structure 38 can be driven to rotate.

As shown in fig. 2, a stop ring 14 for limiting the sliding of the mounting structure 31 toward the percussion drill body 2 is fixedly mounted in the drill barrel 12, so as to prevent the mounting structure 31 from sliding toward the percussion drill body 2 under the pre-pressure of the coil spring 39 and ensure the pressure of the coil spring 39 on the transmission coil structure 38.

As shown in fig. 5, a plurality of square notches 18 are uniformly formed in the circumferential direction on the outer circumferential surface of the drill cylinder 12 near one end of the percussion drill body 2. The effect of designing square notch 18 is to ensure that wood flour and wood dust permeating into the space of drill barrel 12 located at one side of mounting structure 31 near percussion drill body 2 can be discharged through square notch 18 by shaking drill barrel 12, preventing wood flour and wood dust from being retained in the space at the rear side of drill barrel 12 to affect the transmission of first transmission block 9 and second transmission block 30.

As shown in fig. 5, the two sliding grooves 24 formed on the mounting block 27 are each formed with a first mounting groove 22 on one side away from the axis of the drill barrel 12, and a swing groove 21 extending through the mounting block 27 is formed on one side of each of the two first mounting grooves 22.

As shown in fig. 6, one end of each of the two latch blocks 13 away from the shaft hole 20 is fixedly mounted with a mounting plate 28, the mounting plate 28 is in sliding fit with the corresponding second mounting groove 23, one end of each of the two first springs 29 is fixedly mounted on the corresponding mounting plate 28, and the other end of each of the two first springs 29 is fixedly mounted on the end surface of the corresponding second mounting groove 23.

As shown in fig. 6, an arc surface is arranged between the upper end surface and the lower end surface of each extrusion block 25, the two extrusion blocks 25 are eccentrically and swingably mounted in the two first mounting grooves 22, the two extrusion blocks 25 are engaged with the two fixture blocks 13, in a state where the fixture blocks 13 are engaged with the clamping grooves 7, the straight surfaces of the two extrusion blocks 25 facing the drill barrel 12 are correspondingly engaged with one ends of the two fixture blocks 13 away from the drill barrel 12, after the two extrusion blocks 25 swing ninety degrees upward, the arc surfaces of the two extrusion blocks 25 are engaged with the two fixture blocks 13, at this time, the distance between the contact point of the upper arc surface of the extrusion block 25 and the corresponding fixture block 13 and the swing center of the extrusion block 25 is smaller than the distance between the contact point of the extrusion block 25 and the corresponding fixture block 13 and the swing center of the extrusion block 25 in a state where the fixture; one end of each of the two extrusion blocks 25 is fixedly provided with a swing rod 26, and the two swing rods 26 are respectively matched with the two swing grooves 21.

Under the state that the clamping blocks 13 are matched with the clamping grooves 7, the straight surfaces of the two extrusion blocks 25 facing the drilling barrel 12 are correspondingly matched with one ends, far away from the drilling barrel 12, of the two clamping blocks 13, the two extrusion blocks 25 extrude the two clamping blocks 13 through the straight surfaces, so that the two clamping blocks 13 are tightly clamped in the two clamping grooves 7, the drilling barrel 12 is connected with the transmission connected with the rotating shaft 3, and the self-locking function can be achieved through directly extruding the two extrusion blocks 25. After the two extrusion blocks 25 swing ninety degrees upwards, the arc surfaces on the two extrusion blocks 25 are matched with the two fixture blocks 13, at the moment, the distance between the contact point of the upper arc surface of the extrusion block 25 and the corresponding fixture block 13 and the swing center of the extrusion block 25 is smaller than the distance between the contact point of the extrusion block 25 and the corresponding fixture block 13 and the swing center of the extrusion block 25 in the state that the fixture block 13 is matched with the clamping groove 7, in this state, under the action of the two first springs 29, the two fixture blocks 13 are separated from the two clamping grooves 7, and the transmission connection between the connecting rotating shaft 3 and the drill barrel 12 is released; the two extrusion blocks 25 can be driven to swing by swinging the two swing rods 26.

As shown in fig. 9, a plurality of circular mounting grooves 41 are uniformly formed in one end of the striking block 15 away from the hammer drill body 2, a striking rod 40 is slidably mounted in each circular mounting groove 41, and a third spring 42 is respectively mounted between each striking rod 40 and the inner end surface of the corresponding circular mounting groove 41; the end of each striker bar 40 remote from the mounting round slot 41 has a sharp corner.

In the process that the impact block 15 is driven to slide towards the outlet of the drill barrel 12, the impact block 15 can drive the impact rod 40 arranged on the impact block to slide, and in the process that the impact rod 40 slides, after the impact rod 40 is contacted with wood blocking the drill barrel 12, the impact rod 40 can impact the wood under the impact effect of the impact drill body 2 to crush the wood, so that the auxiliary loosening effect is realized on the wood and the drill barrel 12; the striker rod 40 of the present invention is designed to slide relative to the strike block 15, which ensures that the striker rod 40 will accommodate different cross-sectional profiles of wood. The sharp corners are designed to enhance the impact effect.

The third spring 42 is a compression spring.

As shown in fig. 4, one end of the first transmission block 9, which is far away from the connecting shaft 3, is provided with first inclined planes 10 which are symmetrically distributed, as shown in fig. 7, one end of the second transmission block 30, which penetrates through the corresponding mounting chute 36, faces the front face of the percussion drill body 2 and is provided with second inclined planes 43 which are symmetrically distributed, two side faces, which are adjacent to the front face of the second transmission block 30, which faces the percussion drill body 2, are provided with third inclined planes 44, after the second transmission block 30 is matched with the first transmission block 9, the first transmission block 9 shifts the second transmission block 30 to drive the drill barrel 12 to rotate, and shifts the first transmission block 9 to be matched with the third inclined planes 44 on two side faces of the second transmission block 30 in the direction. When the first transmission block 9 moves towards the second transmission block 30, the first inclined surface 10 and the second inclined surface 43 will cooperate, and the function of the first inclined surface 10 and the second inclined surface 43 is to ensure that the first transmission block 9 and the second transmission block 30 can be smoothly inserted and matched in the sliding process.

The coil spring 39 is a compression spring and has a preload.

The specific working process is as follows: when a normal through round hole needs to be punched. When the two clamping blocks 13 are controlled to be matched with the two clamping grooves 7, the percussion drill body 2 is controlled to rotate and output, the output shaft 5 of the percussion drill body 2 rotates to drive the connecting rotating shaft 3 to rotate, the connecting rotating shaft 3 rotates to drive the two clamping blocks 13 to rotate around the axis of the drill barrel 12 through the matching of the clamping blocks 13 and the clamping grooves 7, the two clamping blocks 13 rotate to drive the mounting block 27 to rotate, and the mounting block 27 rotates to drive the drill barrel 12 to rotate, so that the wood drilling treatment is realized; the first transmission block 9 and the second transmission block 30 are in a disengaged state in the process.

If the wood is stuck in the drilling process of the drill barrel 12, manually pulling the two swing rods 26, and driving the two extrusion blocks 25 to swing by swinging the two swing rods 26; the cambered surfaces on the two extrusion blocks 25 are matched with the two fixture blocks 13, and at the moment, the distance between the contact point of the upper cambered surface of the extrusion block 25 and the corresponding fixture block 13 and the swing center of the extrusion block 25 is smaller than the distance between the contact point of the extrusion block 25 and the corresponding fixture block 13 and the swing center of the extrusion block 25 in the state that the fixture blocks 13 are matched with the clamping grooves 7, in this state, under the action of the two first springs 29, the two fixture blocks 13 are separated from the two clamping grooves 7, and the transmission connection between the connecting rotating shaft 3 and the drill barrel 12 is released; at this time, the connecting shaft 3 can be pushed to slide into the drill barrel 12 relative to the drill barrel 12, so that the first transmission block 9 installed on the connecting shaft 3 is inserted between the second transmission blocks 30 installed on the installation structure 31, and then the percussion drill body 2 is controlled to perform percussion rotation work, the connecting shaft 3 can drive the second transmission blocks 30 to rotate around the axis of the drill barrel 12 through the first transmission blocks 9, the second transmission blocks 30 rotate to drive the installation structure 31 to rotate, the installation structure 31 rotates to drive the transmission spiral structure 38 to rotate, because the three groups of connecting sliding blocks 11 pass through adjacent spiral rings in the transmission spiral structure 38, and the three groups of connecting sliding blocks 11 are in sliding fit with the three sliding grooves 17 formed in the drill barrel 12, therefore, when the transmission spiral structure 38 rotates, the three groups of connecting sliding blocks 11 are driven to slide along the axis of the drill barrel 12, and the three groups of connecting sliding blocks 11 slide to drive the impact block 15 to slide; meanwhile, under the condition that the drill barrel 12 is stuck, the impact force is transmitted to the transmission spiral structure 38 through the end face of the mounting ring 8 and the end face of the mounting column 35 by the rotating shaft of the impact drill body 2 in the rotating process of the spiral spring 39 and the transmission spiral structure 38, the transmission spiral structure 38 transmits the rotation and the impact to the impact block 15, namely the impact block 15 still has the impact vibration movement in the process of sliding towards the wood, when an impact rod 40 on the impact block 15 does not collide with the wood in the drill barrel 12, the impact rod 40 absorbs the impact force through the transmission spiral structure 38, along with the rotation of the transmission spiral structure 38, when the impact rod 40 contacts with the wood stuck with the drill barrel 12, the transmission spiral structure 38 continuously transmits the rotation and the impact to the impact rod 40 of the impact block 15, and the impact rod 40 transmits the impact force to the wood to crush the wood; when the impact rod 40 is prevented from rotating around the axis of the impact block 15 by wood, or the impact rod 40 cannot continue to feed due to the prevention of wood, the transmission screw structure 38 cannot rotate, at this time, the first transmission block 9 presses the second transmission block 30 into the mounting column 35 through the third inclined surface 44 of the second transmission block 30, and it is ensured that the mounting ring 32 can continue to be driven by the connecting rotating shaft 3 to rotate and the transmission screw structure 38 cannot rotate. However, the impact of the striking rod 40 on the wood is continuously performed all the time, and when the wood is broken and does not generate resistance to the feeding of the striking rod 40, the transmission screw structure 38 is continuously driven to rotate. After the striking that does not stop, timber is broken timber by the striking will reduce to the frictional resistance of boring a section of thick bamboo 12, judge if the user is according to striking time and sound, when considering that boring a section of thick bamboo 12 can continue the rotation, control strikes and bores body 2 reverse rotation, make striking block 15 striking rod 40 reverse slip to reset, judge the degree of resetting of striking block 15 through sound, after striking block 15 resets completely, manual control fixture block 13 and draw-in groove 7 cooperate, then control strikes and bores body 2 forward work, make boring a section of thick bamboo 12 continue rotatory punching, if boring a section of thick bamboo 12 still can't rotate, then make striking rod 40 continue to carry out the breakage to timber through adjusting again.

Claims

1. A wood drilling tool comprises a drill barrel module and a percussion drill body, wherein the drill barrel module is detachably arranged on an output shaft of the percussion drill body; the method is characterized in that: the drill cylinder module comprises a connecting rotating shaft, a drill cylinder, a clamping block, a connecting sliding block, an impact block and a spiral driving structure, wherein the connecting rotating shaft is detachably mounted on an output shaft of the percussion drill body; one end of the drill cylinder is provided with teeth, the other end of the drill cylinder is fixedly provided with an installation block, the installation block is provided with a shaft hole communicated with the drill cylinder, the installation block is provided with two sliding grooves which are symmetrically distributed and communicated with the shaft hole, one side of each of the two sliding grooves is provided with a second installation groove, the inner circular surface of the drill cylinder is provided with an annular groove, and the inner circular surface of the annular groove is uniformly provided with three sliding grooves in the circumferential direction; the drill cylinder is arranged on the mounting rotating shaft through the sliding fit of the shaft hole and the mounting rotating shaft; the two clamping blocks are slidably arranged in two sliding grooves formed in the mounting block, and a first spring is respectively arranged between each clamping block and each second mounting groove; the first spring is an extension spring and has pretension; the two clamping blocks are matched with the two clamping grooves on the installation rotating shaft; the two clamping blocks can be controlled to be matched with the two clamping grooves formed in the mounting rotating shaft or not by manually pulling the two clamping blocks;

2. A wood-drilling tool according to claim 1, wherein: the output shaft of the percussion drill body is a hollow shaft, and the inner circular surface of the output shaft is provided with internal threads; a first hexagonal ring is fixedly mounted on an output shaft of the percussion drill body; the outer circular surface of connecting pivot one end has the external screw thread, and the one end fixed mounting who connects the pivot and have the external screw thread has the second hexagonal ring, connects the pivot and passes through the internal screw thread screw-thread fit and the output shaft of churning drill body on external screw thread and the output shaft.

3. A wood-drilling tool according to claim 1, wherein: one end of the connecting rotating shaft, which is positioned in the drill cylinder, is provided with an installation ring shell, and a plurality of first transmission blocks are uniformly arranged on the inner circular surface of the installation ring shell in the circumferential direction; the mounting structure consists of a mounting ring which is slidably mounted on the inner circular surface of the drill cylinder and a mounting disc which is fixedly mounted through a plurality of uniformly distributed connecting plates, a mounting column is fixedly mounted on the mounting disc, a plurality of mounting chutes are uniformly formed in the circumferential direction on the outer circular surface of the mounting column, a second transmission block is slidably mounted in each mounting chute, and a second spring is mounted between each second transmission block and the corresponding mounting chute; the second transmission blocks are matched with the first transmission blocks in a one-to-one correspondence manner.

4. A wood-drilling tool according to claim 1, wherein: the drill cylinder is internally and fixedly provided with a limiting ring which can limit the sliding of the mounting structure towards one side of the percussion drill body.

5. A wood-drilling tool according to claim 1, wherein: the outer circular surface of the drill cylinder, which is close to one end of the percussion drill body, is uniformly provided with a plurality of square notches in the circumferential direction.

6. A wood-drilling tool according to claim 1, wherein: one sides of the two sliding grooves formed in the mounting block, which are far away from the axis of the drill cylinder, are respectively provided with a first mounting groove, and one side of each of the two first mounting grooves is provided with a swinging groove which penetrates out of the mounting block;

one ends of the two clamping blocks, which are far away from the shaft hole, are respectively fixedly provided with an installation plate, the installation plates are in sliding fit with the corresponding second installation grooves, one ends of the two first springs are fixedly arranged on the corresponding installation plates, and the other ends of the two first springs are fixedly arranged on the end surfaces of the corresponding second installation grooves;

7. A wood-drilling tool according to claim 1, wherein: a plurality of mounting circular grooves are uniformly formed in one end, far away from the percussion drill body, of each impact block, an impact rod is slidably mounted in each mounting circular groove, and a third spring is mounted between each impact rod and the inner end face of the corresponding mounting circular groove; and one end of each impact rod, which is far away from the mounting circular groove, is provided with a sharp corner.

8. A wood-drilling tool according to claim 7, wherein: the third spring is a compression spring.

9. A wood-drilling tool according to claim 3, wherein: the end, far away from the connecting shaft, of the first transmission block is provided with symmetrically distributed first inclined planes, the end, penetrating out of the second transmission block, of the corresponding mounting chute is provided with symmetrically distributed second inclined planes towards the front of the percussion drill body, the two side faces, adjacent to the front of the percussion drill body, of the second transmission block are provided with third inclined planes, after the second transmission block is matched with the first transmission block, the first transmission block stirs the second transmission block to drive the drill cylinder to rotate, and the third inclined planes of the two side faces of the first transmission block and the second transmission block in the shifting direction are matched.

10. A wood-drilling tool according to claim 1, wherein: the spiral spring is a compression spring and has pre-pressure.