Drilling machine for wood board processing

Abstract

The invention relates to the technical field of drilling equipment, in particular to a drilling machine for wood board processing, which comprises a drill bit structure for drilling a wood board, the drill bit structure comprises a supporting sleeve, a plurality of drilling tools, a moving ring and a positioning ring, the plurality of drilling tools are annularly distributed around the circumferential direction of the supporting sleeve, and the moving ring is arranged on the supporting sleeve. The drilling tool is slidably installed on the end face of the supporting sleeve, the sliding direction of the drilling tool is in the radial direction of the supporting sleeve, and the outer wall of the supporting sleeve is sleeved with the movable ring and the positioning ring. Through the sliding of the drilling tool in the radial direction of the supporting sleeve and the linkage design of the supporting arm and the adjusting arm, the function of dynamically adjusting the hole diameter according to the actual situation in the drilling process is achieved, the risks of wood fiber extrusion and wood board cracking caused by too large radial force in the drilling process are reduced, and the drilling efficiency is improved. The drill bit structure can be automatically adjusted according to the drilling resistance, so that the lateral extrusion force on the wood board is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of drilling equipment, in particular to a drilling machine for processing wooden boards. Background Art

[0002] In the woodworking manufacturing industry, drilling is an indispensable key process in wood board processing, which directly affects the subsequent assembly, connection and the final quality and aesthetics of the product. The traditional drilling method is completed by a rotating drill bit on a bench drill or a CNC drilling machine. Since the drill bit is a columnar entity, it will produce a cutting effect on the wood when drilling. The force can be decomposed into an axial force and a radial force. The radial force will cause the wood fiber to be squeezed toward the hole wall, and since there is friction between the drill bit and the wood fiber, the friction is also generated by the outward squeezing force of the drill bit on the wood fiber. Therefore, the outer wall of the drill bit will generate an outward support force toward the inner wall of the drilling position of the wood board. This force can easily cause the wood board to crack and damage or cause the wood board to deform. In order to solve the above problems, the present invention provides a new type of drilling machine for wood board processing. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a drilling machine for wood board processing, and the specific technical solution adopted is: A drilling machine for processing wooden boards comprises a drill bit structure for drilling holes in wooden boards, the drill bit structure comprises a supporting sleeve, a plurality of drill bits, a movable ring and a positioning ring, the plurality of drill bits are distributed in a ring shape around the circumferential direction of the supporting sleeve, the drill bits are slidably mounted on the end surface of the supporting sleeve, and the sliding direction of the drill bits is along the radial direction of the supporting sleeve, the movable ring and the positioning ring are both sleeved on the outer wall of the supporting sleeve, the movable ring slides on the supporting sleeve, the positioning ring blocks and limits the movable ring, a plurality of support arms are fixed on the movable ring, the support arms are connected to the drill bits by an inclined adjustment arm, and the support arms are connected to the positioning ring by a first leaf spring.

[0004] Furthermore, the drill cutter is composed of a supporting part that plays a supporting role and a flat cutter part and a side cutter part that play a cutting role. The flat cutter part and the side cutter part are both installed on the supporting part. The side cutter part is located on the outside of the flat cutter part. The flat cutter part is used to cut wood along the axial direction of the supporting sleeve, and the side cutter part is used to cut wood along the circumferential direction of the supporting sleeve.

[0005] Furthermore, the end of the flat blade portion away from the support portion is configured to be in a concave arc shape, and the opening of the concave arc shape is inclined toward the axial direction of the support sleeve.

[0006] Furthermore, the flat blade portion is inclined, and a spiral portion is provided between the flat blade portion and the supporting portion.

[0007] Furthermore, the positioning ring slides on the supporting sleeve, and the positioning ring and the supporting sleeve are fixedly connected via a top screw.

[0008] Furthermore, the number of the drill bit structures is two groups, and they are distributed up and down, and the connecting line of the two groups of drill bit structures coincides with the axis of the support sleeve; It also includes a back plate and a guide rail fixed on the back plate, two slide seats are slidably provided on the guide rail, a pressure plate and a moving platform are provided on each slide seat, the pressure plate is located between two groups of drill bit structures, a process hole for the drill bit structure to be inserted is opened on the pressure plate, the pressure plate is fixed on the slide seat, the moving platform is slidably installed on the slide seat, the moving platform and the pressure plate are connected by a spring, and a support sleeve is rotatably installed on the moving platform.

[0009] Furthermore, a guide rod is fixed on one of the moving platforms, an abutment plate is slidably provided on the guide rod, the abutment plate and the guide rod are connected via a second leaf spring, a support sleeve on the moving platform slides through the moving platform and is rotatably mounted on the abutment plate, and a first motor for providing power for the rotation of the support sleeve is provided on the abutment plate; Another of the mobile platforms is provided with an abutment rod, which is used in conjunction with the abutment plate, and the mobile platform is provided with a first motor of the same structure, which is used to provide rotational power for the support sleeve on the mobile platform; The two supporting sleeves rotate in opposite directions.

[0010] Furthermore, the back plate is provided with a power unit for driving the two mobile platforms to move synchronously in opposite directions. The power unit includes a second motor fixed on the back plate and a threaded rod installed on the output end of the second motor. The threaded rod passes through the two mobile platforms, and the outer wall threads of some threaded rods on the two mobile platforms have opposite rotation directions.

[0011] The advantages of the present invention are: By sliding the drill bit along the radial direction of the support sleeve and the linkage design of the support arm and the adjustment arm, the function of dynamically adjusting the hole diameter according to the actual situation during the drilling process is realized, which helps to reduce the risk of wood fiber extrusion and wood board cracking caused by excessive radial force during drilling, because the drill bit structure can automatically adjust according to the drilling resistance, reducing the lateral extrusion force on the wood board; in summary, the invention effectively solves the problem of wood board cracking and deformation that is easily caused by traditional drilling processes through innovative drill bit structure design, and realizes a more efficient, more precise and safer wood board drilling processing method. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 Schematic diagram of the explosion structure; Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of the medium pressure plate and the moving platform; Figure 4 yes Figure 3 A schematic diagram of the enlarged structure of the middle support sleeve; Figure 5 yes Figure 4 Schematic diagram of the enlarged structure of the middle drill; Figure numerals: 1. support sleeve; 2. drill; 3. moving ring; 4. positioning ring; 5. support arm; 6. adjusting arm; 7. first leaf spring; 8. support part; 9. flat knife part; 10. side knife part; 11. concave arc; 12. spiral part; 13. back plate; 14. guide rail; 15. slide seat; 16. pressure plate; 17. moving table; 18. spring; 19. guide rod; 20. abutment plate; 21. second leaf spring; 22. abutment rod; 23. first motor; 24. second motor; 25. threaded rod. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0015] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. This embodiment is written in a progressive manner.

[0017] like Figures 1 to 5 As shown, a drilling machine for wood board processing of the present invention comprises a drill bit structure for drilling holes in wood boards, wherein the drill bit structure comprises a supporting sleeve 1, a plurality of drill bits 2, a movable ring 3 and a positioning ring 4, wherein the plurality of drill bits 2 are distributed in a ring shape around the circumferential direction of the supporting sleeve 1, the drill bits 2 are slidably mounted on the end surface of the supporting sleeve 1, and the sliding direction of the drill bits 2 is along the radial direction of the supporting sleeve 1, the movable ring 3 and the positioning ring 4 are both sleeved on the outer wall of the supporting sleeve 1, the movable ring 3 slides on the supporting sleeve 1, the positioning ring 4 blocks and limits the movable ring 3, a plurality of support arms 5 are fixed on the movable ring 3, the support arms 5 and the drill bits 2 are connected by an inclined adjusting arm 6, and the support arms 5 and the positioning ring 4 are connected by a first leaf spring 7.

[0018] In detail, multiple drill bits 2 are used to cut the drilling positions of the wooden board, and columnar residual materials are left between the multiple drill bits 2. As the drilling depth increases, the residual materials can extend into the support sleeve 1, and the support sleeve 1 provides support for the multiple drill bits 2. Since the positioning ring 4 limits the position of the movable ring 3, with the help of the first leaf spring 7, the position of the drill bit 2 can be fixed in the natural state. Since the drill bit 2 slides in the radial direction of the end face of the support sleeve 1, the drill bit 2 can use the support arm 5 and the adjusting arm 6 to guide the movable ring 3 in the opposite direction to prevent the movable ring 3 from rotating on the support sleeve 1. Since the adjusting arm 6 is inclined, when the drill bit 2 moves toward the axial direction of the support sleeve 1, the drill bit 2 will pull the movable ring 3 away from the positioning ring 4 through the adjusting arm 6 and the support arm 5, and the first leaf spring 7 is elastically deformed.

[0019] When in use, the support sleeve 1 is rotated, and the support sleeve 1 can drive the structure above it to rotate synchronously. At this time, due to the action of the first leaf spring 7 and the centrifugal force of the drill bit 2, the moving ring 3 abuts against the positioning ring 4, and the position of the drill bit 2 is fixed. The support sleeve 1 is moved to make multiple drill bits 2 move vertically toward the wooden board, and multiple drill bits 2 drill holes in the wooden board. During drilling, the drill bit 2 will produce an outward squeezing force on the wood fiber at the drilling position of the wooden board. Therefore, in the opposite direction, the wood fiber will produce a force on the drill bit 2 toward the axial direction of the support sleeve 1. This force will push the drill bit 2 to move on the support sleeve 1 toward the axial direction of the support sleeve 1. At this time, the first leaf spring 7 undergoes elastic deformation, and the rotation radius of multiple drill bits 2 during rotation is reduced. With the increase of drilling depth and the action of the centrifugal force and the elastic force of the first leaf spring 7 on the drill bit 2, the drill bit 2 will gradually cut the inner wall of the drill hole, thereby increasing the aperture until it meets the specified requirements. At this time, the moving ring 3 abuts against the positioning ring 4, thereby achieving a smooth drilling method to avoid cracking the wooden board when drilling.

[0020] By sliding the drill bit 2 along the radial direction of the support sleeve 1 and the linkage design of the support arm 5 and the adjustment arm 6, the function of dynamically adjusting the hole diameter according to the actual situation during the drilling process is realized, which helps to reduce the risk of wood fiber extrusion and wood board cracking caused by excessive radial force during drilling, because the drill bit structure can automatically adjust according to the drilling resistance, reducing the lateral extrusion force on the wood board; in summary, the invention effectively solves the problem of wood board cracking and deformation that is easily caused in the traditional drilling process through the innovative drill bit structure design, and realizes a more efficient, more precise and safer wood board drilling processing method.

[0021] Furthermore, the drill bit 2 is composed of a supporting portion 8 that plays a supporting role and a flat knife portion 9 and a side knife portion 10 that play a cutting role. The flat knife portion 9 and the side knife portion 10 are both installed on the supporting portion 8, and the side knife portion 10 is located on the outside of the flat knife portion 9. The flat knife portion 9 is used to cut wood along the axial direction of the supporting sleeve 1, and the side knife portion 10 is used to cut wood along the circumferential direction of the supporting sleeve 1.

[0022] In detail, one end of the support portion 8 is slidably installed on the support sleeve 1 along the radial direction of the support sleeve 1, the flat knife portion 9 is arranged on the other end of the support portion 8, and the side knife portion 10 is located on the side of the flat knife portion 9 away from the axis of the support sleeve 1. When drilling, the flat knife portion 9 performs vertical cutting on the wood fibers on the wooden board along the axial direction of the support sleeve 1, and at the same time, the side knife portion 10 will cut the inner wall of the circular hole of the wooden board at the cutting position of the flat knife portion 9 again along the circumferential direction of the support sleeve 1, thereby realizing the working mode of drilling and reaming.

[0023] During operation, the inner wall of the wooden board at the drilling position generates a squeezing force on the drill bit 2. Therefore, as the drilling depth increases, the distance between the drill bit 2 and the axis of the support sleeve 1 shortens until the wooden board is drilled through. As the support sleeve 1 and the drill bit 2 continue to rotate, the elastic force of the first leaf spring 7 and the inertia force of the drill bit 2 are used to cut and expand the hole through the side cutter part 10 until the hole reaches the specified size. This can reduce the external support effect of the drill bit on the wooden board when drilling the wooden board.

[0024] Furthermore, the end of the flat blade portion 9 away from the support portion 8 is configured as a concave arc 11 , and the opening of the concave arc 11 is inclined toward the axial direction of the support sleeve 1 .

[0025] In detail, by setting the end of the flat knife part 9 into an inwardly concave arc shape 11, the force of the flat knife part 9 on the drilling position of the wooden board can be tilted inside the box when the drill bit is feeding and drilling, thereby reducing the external supporting force on the wooden board and avoiding cracking of the wooden board.

[0026] Furthermore, the flat blade portion 9 is inclined, and a spiral portion 12 is provided between the flat blade portion 9 and the support portion 8 .

[0027] In detail, since a large amount of wood chips will be generated when drilling, the inclined setting of the flat knife part 9 can guide the wood chips out of the hole, and the setting of the concave arc 11 can guide the wood chips guided by the flat knife part 9 to the surroundings, so that the wood chips can be quickly dispersed to the surroundings, which is convenient for chip removal and prevents the wood chips from moving onto the support sleeve 1 and affecting the normal use of the movable ring 3, the positioning ring 4, the support arm 5 and the adjustment arm 6.

[0028] Furthermore, the positioning ring 4 slides on the supporting sleeve 1, and the positioning ring 4 and the supporting sleeve 1 are fixedly connected via a top screw.

[0029] In detail, by enabling the positioning ring 4 to adjust its position on the supporting sleeve 1, it is convenient to adjust the position of the moving ring 3 on the supporting sleeve 1 when the moving ring 3 abuts against the positioning ring 4, thereby facilitating the adjustment of the drilling diameter.

[0030] Furthermore, the number of the drill bit structures is two groups, and they are distributed up and down, and the connecting line of the two groups of drill bit structures coincides with the axis of the support sleeve 1; It also includes a back plate 13 and a guide rail 14 fixed on the back plate 13, two slide seats 15 are slidably provided on the guide rail 14, each slide seat 15 is provided with a pressure plate 16 and a moving platform 17, the pressure plate 16 is located between the two groups of drill bit structures, and the pressure plate 16 is provided with a process hole for the drill bit structure to be inserted, the pressure plate 16 is fixed on the slide seat 15, and the moving platform 17 is slidably installed on the slide seat 15, the moving platform 17 is connected to the pressure plate 16 by a spring 18, and the support sleeve 1 is rotatably installed on the moving platform 17.

[0031] In detail, the directions of the two groups of drill bit structures are opposite, and the two pressure plates 16 are located between the two groups of drill bit structures. The two pressure plates 16 are used to clamp and fix the wooden board. When in use, the two moving platforms 17 are pushed close to each other. Due to the action of the spring 18, the moving platform 17 drives the pressure plate 16 and the slide 15 to move synchronously. The slide 15 slides on the guide rail 14, and the back plate 13 supports the guide rail 14. The two pressure plates 16 are close to each other and clamp and fix the wooden board therebetween, and the drilling position on the wooden board is located in the process hole on the pressure plate 16. When the two pressure plates 16 clamp the wooden board, the two pressure plates 16 stop moving. At this time, the two moving platforms 17 continue to move, and the moving platform 17 slides on the slide 15. The spring 18 is elastically deformed, and the moving platform 17 pushes the drill bit structure to pass through the process hole on the pressure plate 16 and drill the wooden board.

[0032] Through the above-mentioned structural method, it is possible to achieve a simultaneous drilling operation on the upper and lower surfaces of the wooden board, thereby making it convenient to evenly apply force to the wooden board. The two pressure plates 16 are used to fix the wooden board. By setting the spring 18, only the force can be provided to the movable platform 17, so that the pressure plate 16 can realize the clamping function, and the movable platform 17 and the drill bit structure thereon can realize the feeding and drilling function. The operation method is simple and the functionality is strong.

[0033] Furthermore, a guide rod 19 is fixed on one of the moving platforms 17, an abutment plate 20 is slidably provided on the guide rod 19, the abutment plate 20 is connected to the guide rod 19 via a second leaf spring 21, the support sleeve 1 on the moving platform 17 slides through the moving platform 17 and is rotatably mounted on the abutment plate 20, and the abutment plate 20 is provided with a first motor 23 for providing power for the rotation of the support sleeve 1; Another said moving platform 17 is provided with an abutment rod 22, which cooperates with the abutment plate 20, and a first motor 23 of the same structure is provided on the moving platform 17, which is used to provide rotational power for the support sleeve 1 on the moving platform 17; The two supporting sleeves 1 rotate in opposite directions.

[0034] In detail, due to the action of the second leaf spring 21, the abutment plate 20 abuts against the movable platform 17. When drilling, the two sets of drill bit structures drill the wooden board from the upper and lower surfaces of the wooden board at the same time. At this time, the two movable platforms 17 are close to each other, and the first motor 23 provides power for the rotation of the support sleeve 1. Since the two support sleeves 1 rotate in opposite directions, the two sets of drill bit structures exert opposite rotational friction forces on the wooden board on the horizontal plane, thereby offsetting each other and improving the stability of the wooden board when drilling.

[0035] As the two moving platforms 17 approach each other, the two sets of drill bit structures approach each other, and the abutment rod 22 approaches the abutment plate 20. When the distance between the two sets of drill bit structures in the wooden board reaches a specified value, only a small amount of wood fiber remains in the wooden board that has not been drilled through. At this time, as the abutment rod 22 exerts a low pressure on the abutment plate 20, the abutment plate 20 slides on the guide rod 19, the second leaf spring 21 undergoes elastic deformation, and the two sets of drill bit structures move synchronously and in the same direction, thereby drilling through the circular hole in the wooden board.

[0036] Furthermore, the back plate 13 is provided with a power unit for driving the two moving platforms 17 to move synchronously in opposite directions. The power unit includes a second motor 24 fixed on the back plate 13 and a threaded rod 25 installed on the output end of the second motor 24. The threaded rod 25 passes through the two moving platforms 17, and the outer wall threads of some of the threaded rods 25 on the two moving platforms 17 have opposite rotation directions.

[0037] In detail, since the outer wall threads of some threaded rods 25 on the two movable platforms 17 have opposite rotation directions, when the threaded rods 25 rotate unidirectionally, the threaded rods 25 can push the two movable platforms 17 to move synchronously in opposite directions, thereby providing power for the two sets of drill bit structures, and the second motor 24 provides power for the rotation of the threaded rods 25.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A drilling machine for wood board processing, characterized in that: The drill bit structure comprises a drill bit for drilling holes in a wooden board, the drill bit structure comprising a support sleeve (1), a plurality of drill bits (2), a movable ring (3) and a positioning ring (4), the plurality of drill bits (2) being distributed in a ring shape around the circumferential direction of the support sleeve (1), the drill bits (2) being slidably mounted on the end surface of the support sleeve (1), and the sliding direction of the drill bits (2) being along the radial direction of the support sleeve (1), the movable ring (3) and the positioning ring (4) being both sleeved on the outer wall of the support sleeve (1), the movable ring (3) sliding on the support sleeve (1), the positioning ring (4) blocking and limiting the movable ring (3), a plurality of support arms (5) being fixed on the movable ring (3), the support arms (5) being connected to the drill bits (2) via inclined adjustment arms (6), and the support arms (5) being connected to the positioning ring (4) via first leaf springs (7).

2. A wood board processing drilling machine according to claim 1, characterized in that: The drill bit (2) is composed of a supporting portion (8) having a supporting function, and a flat blade portion (9) and a side blade portion (10) having a cutting function. The flat blade portion (9) and the side blade portion (10) are both mounted on the supporting portion (8). The side blade portion (10) is located outside the flat blade portion (9). The flat blade portion (9) is used to cut wood along the axial direction of the supporting sleeve (1), and the side blade portion (10) is used to cut wood along the circumferential direction of the supporting sleeve (1).

3. A wood board processing drilling machine according to claim 2, characterized in that: The end of the flat blade portion (9) away from the support portion (8) is arranged in a concave arc shape (11), and the opening of the concave arc shape (11) is inclined toward the axial direction of the support sleeve (1).

4. A wood board processing drilling machine according to claim 3, characterized in that: The flat blade portion (9) is inclined, and a spiral portion (12) is provided between the flat blade portion (9) and the support portion (8).

5. A wood board processing drilling machine according to claim 4, characterized in that: The positioning ring (4) slides on the supporting sleeve (1), and the positioning ring (4) and the supporting sleeve (1) are fixedly connected via a top screw.

6. A wood board processing drilling machine according to claim 5, characterized in that: The number of the drill bit structures is two, and they are distributed in an upper and lower direction, and the connecting line of the two sets of drill bit structures coincides with the axis of the support sleeve (1); The invention also comprises a back plate (13) and a guide rail (14) fixed on the back plate (13); two slide seats (15) are slidably provided on the guide rail (14); each slide seat (15) is provided with a pressing plate (16) and a moving platform (17); the pressing plate (16) is located between the two sets of drill bit structures; a process hole for inserting the drill bit structure is opened on the pressing plate (16); the pressing plate (16) is fixed on the slide seat (15); the moving platform (17) is slidably installed on the sliding platform (15); the moving platform (17) and the pressing plate (16) are connected by a spring (18); and the support sleeve (1) is rotatably installed on the moving platform (17).

7. A wood board processing drilling machine according to claim 6, characterized in that: A guide rod (19) is fixed on one of the movable platforms (17), an abutment plate (20) is slidably provided on the guide rod (19), the abutment plate (20) and the guide rod (19) are connected via a second leaf spring (21), a support sleeve (1) on the movable platform (17) slides through the movable platform (17) and is rotatably mounted on the abutment plate (20), and a first motor (23) is provided on the abutment plate (20) for providing power for the rotation of the support sleeve (1); The other of the mobile platforms (17) is provided with an abutment rod (22), the abutment rod (22) being used in conjunction with the abutment plate (20), and the mobile platform (17) is provided with a first motor (23) of the same structure, the first motor (23) being used to provide rotational power for the support sleeve (1) on the mobile platform (17); The two supporting sleeves (1) rotate in opposite directions.

8. A wood board processing drilling machine according to claim 7, characterized in that: The back plate (13) is provided with a power unit for driving the two moving platforms (17) to move synchronously in opposite directions. The power unit comprises a second motor (24) fixed to the back plate (13) and a threaded rod (25) mounted on the output end of the second motor (24). The threaded rod (25) passes through the two moving platforms (17), and the outer wall threads of some of the threaded rods (25) on the two moving platforms (17) have opposite rotation directions.

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