Drill turnover device of drill machining table

Abstract

The utility model discloses a drill bit turnover device of a drill bit machining table. The drill bit turnover device comprises a chuck and a mounting plate. One end of the round rod is rotationally arranged in the mounting groove of the mounting plate through a bearing, the other end of the round rod is fixedly connected with the chuck, an air extractor is arranged in the mounting groove of the mounting plate, the air extractor is in clearance fit with the round rod, and the peripheral side of the round rod is fixedly sleeved with a gear ring. When the drill bit turnover device of the improved drill bit machining table is used, the connection transmission between the motor and the chuck is controlled by gas in the pneumatic positioning mechanism, so that when the pneumatic positioning mechanism does not release the locking state of the chuck, the transmission between the motor and the chuck is always in a disconnected state; even if a program has an error and a locking structure is not removed, the motor is not stuck and overloaded, so that the motor is prevented from being damaged, and the service life of the motor is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of drill bit processing tables, and more particularly to a drill bit flipping device for a drill bit processing table. Background Technology

[0002] A drill bit is a cutting tool used in general drills or drilling machines to cut circular holes. The basic principle of a drill bit is to rotate the cutting edge, cut the workpiece, and then remove the drill chips through the drill groove. In the process of drill bit production and processing, the drill bit is generally clamped, fixed and rotated for adjustment through a drill bit processing table.

[0003] Existing drill bit processing tables generally use a motor to drive the chuck to rotate, thereby achieving continuous rotation of the drill bit. Then, an external locking structure is used to fix and adjust the angle of the chuck. Due to the difference between the two drive structures, a program error may occur where the locking structure is not released before the motor drives the chuck to rotate, which may cause motor overload, reduce motor life, and in severe cases, damage the motor. Utility Model Content

[0004] The purpose of this utility model is to provide a drill bit flipping device for a drill bit processing table, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drill bit flipping device for a drill bit processing table, comprising a chuck and a mounting plate;

[0006] Also includes:

[0007] A round rod, one end of which is rotatably mounted in the mounting groove of the mounting plate via a bearing, and the other end of which is fixedly connected to a clamp. The mounting groove of the mounting plate is provided with an air extraction device, and the air extraction device is clearance-fitted with the round rod. A toothed ring is fixedly sleeved on the outer circumference of the round rod.

[0008] A gear is located on the outer periphery of a gear ring. A motor is provided on one side of the gear, and the drive end of the motor is fixedly connected to the gear. A pneumatic adjustment mechanism is provided on the other side of the gear for adjusting the position of the gear.

[0009] A pneumatic positioning mechanism is located inside the gear ring and is used for constraining and positioning between the gear and the mounting plate. The two ends of the air extraction device are connected to the pneumatic positioning mechanism and the pneumatic adjustment mechanism.

[0010] Preferably, the pneumatic adjustment mechanism includes a slider and a piston cylinder. One end of the slider is rotatably connected to a gear, and the motor is fixedly connected to the slider via a bracket. A piston rod is slidably mounted inside the piston cylinder, and the end of the piston rod near the slider is fixedly connected to the slider. A spring is wound around the outer periphery of the piston rod, and the two ends of the spring are fixedly connected to the piston rod and the inner wall of the piston cylinder, respectively.

[0011] Preferably, the mounting plate has a groove, and the other end of the slider is T-shaped and inserted into the groove to contact the inner wall of the groove. The piston cylinder is fixedly connected to the inner wall of the groove.

[0012] Preferably, the pneumatic positioning mechanism includes several air storage slots, which are opened on the side of the gear ring near the mounting plate. A piston push rod is slidably installed in the air storage slot, and a ball is rotatably installed in the piston push rod. A positioning slot is opened on the mounting plate at the position corresponding to the air storage slot, and the end of the ball near the corresponding positioning slot is inserted into the corresponding positioning slot and contacts the inner wall of the corresponding positioning slot.

[0013] Preferably, the connecting mechanism includes an annular groove formed on the inner ring wall of the toothed ring, and the interior of the annular groove communicates with the interior of the gas storage tank. A circular cavity is formed at the axial position of the circular rod. A conduit is provided in the mounting groove of the mounting plate, and one end of the conduit is connected to one end of the air extraction device. The other end of the conduit is inserted into the circular cavity and rotatably connected to the circular rod. A plurality of connecting holes are formed on the outer peripheral wall of the circular rod, and the interior of each connecting hole communicates with the interior of the circular cavity and the interior of the annular groove.

[0014] Preferably, a connecting pipe is fixedly installed inside the wall of the mounting plate, and the two ends of the connecting pipe are respectively connected to the joint of the piston cylinder and the opening at the other end of the air extraction device.

[0015] This utility model has the following beneficial effects:

[0016] When the drill bit turning device of the improved drill bit processing table is in use, the connection and transmission between the motor and the chuck is controlled by the gas inside the pneumatic positioning mechanism. This ensures that the transmission between the motor and the chuck is always disconnected when the pneumatic positioning mechanism is not released from the chuck lock state. Even if the program fails and the lock structure is not released, the motor will not jam or overload, thus avoiding motor damage and extending the motor's service life. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the overall structure of this utility model;

[0019] Figure 2 This is a perspective view of the internal structure of the mounting plate and the round rod of this utility model;

[0020] Figure 3 This is a top view of the internal structure of the mounting plate and the round rod of this utility model;

[0021] Figure 4 This utility model Figure 3 Enlarged view of the structure at point A in the middle;

[0022] Figure 5 This utility model Figure 3 Enlarged view of the structure at point B.

[0023] In the diagram: 1. Mounting plate; 2. Round rod; 3. Air extraction device; 4. Gear ring; 5. Gear; 6. Pneumatic adjustment mechanism; 61. Slider; 62. Piston cylinder; 63. Piston rod; 64. Spring; 65. Slide groove; 7. Pneumatic positioning mechanism; 71. Air storage tank; 72. Positioning groove; 73. Piston push rod; 74. Ball bearing; 8. Connecting mechanism; 81. Annular groove; 82. Circular cavity; 83. Conduit; 84. Connecting hole; 85. Connecting pipe; 9. Motor. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be 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 present utility model and are not intended to limit the present utility model.

[0025] This utility model provides a technical solution: (Refer to...) Figure 1 - Figure 5 The present invention discloses a drill bit flipping device for a drill bit processing table, comprising a chuck and a mounting plate 1;

[0026] Also includes:

[0027] A round rod 2, one end of which is rotatably mounted in the mounting groove of the mounting plate 1 via a bearing, and the other end of which is fixedly connected to a clamp. An air extraction device 3 is provided in the mounting groove of the mounting plate 1, and the air extraction device 3 is clearance-fitted with the round rod 2. A toothed ring 4 is fixedly sleeved on the outer circumference of the round rod 2.

[0028] Gear 5 is located on the outer periphery of gear ring 4. A motor 9 is provided on one side of gear 5, and the drive end of motor 9 is fixedly connected to gear 5. A pneumatic adjustment mechanism 6 is provided on the other side of gear 5 for adjusting the position of gear 5.

[0029] The pneumatic positioning mechanism 7 is located inside the gear ring 4 and is used for constraining and positioning between the gear 5 and the mounting plate 1. The two ends of the air extraction device 3 are connected by a connecting mechanism 8 between the pneumatic positioning mechanism 7 and the pneumatic adjustment mechanism 6.

[0030] In this embodiment, when using the drill bit flipping device of the improved drill bit processing table, please refer to... Figure 1 As shown, (the mounting plate 1 is fixedly mounted on the mounting base of the drill bit processing machine tool by bolts), the drill bit material is inserted into the chuck, and the drill bit material is clamped and positioned by the chuck;

[0031] Please refer to Figure 2 - Figure 4 As shown, when adjusting the angle of the drill bit, the air extraction device 3 is activated to extract a corresponding amount of gas from the pneumatic positioning mechanism 7 through the connecting mechanism 8, so as to reduce the constraint force between the mounting plate 1 and the gear ring 4 (the air extraction device 3 consists of a housing, two air pumps and a controller). Then, the gas is injected into the pneumatic adjustment mechanism 6 through the connecting mechanism 8, so that the pneumatic adjustment mechanism 6 is pneumatic and pushes the gear 5 towards the gear ring 4. When the gear 5 meshes with the gear ring 4, the constraint force on the round rod 2 reaches its minimum. At this time, the motor 9 is activated to drive the gear 5 to rotate, thereby driving the round rod 2 to rotate through the gear ring 4 and adjusting the angle of the drill bit.

[0032] After the drill bit is rotated and adjusted, the air extraction device 3 is pneumatically activated to extract the gas injected into the drive adjustment mechanism. Since the pneumatic positioning mechanism 7 can still provide a certain degree of constraint force on the round rod 2, the angle of the drill bit remains stable when the gear 5 is separated from the gear ring 4 without external force. The gas extracted by the air extraction device 3 is re-injected into the pneumatic positioning mechanism 7, thereby greatly increasing the constraint force on the gear ring 4 to lock the position between the gear ring 4 and the mounting plate 1.

[0033] As shown above, when the drill bit turning device of the improved drill bit processing table is in use, the driving force for the meshing adjustment of gear 5 and gear ring 4 is provided by the gas inside the pneumatic positioning mechanism 7. This ensures that when the pneumatic positioning mechanism 7 is not released from the chuck lock state, gear 5 and gear ring 4 are always in a separated state. Even if the program malfunctions and the lock structure is not released, the motor 9 will not be jammed or overloaded, thus avoiding damage to the motor 9 and improving the service life of the motor 9.

[0034] It should be noted that the operation of the motor 9 and the air extraction device 3 is controlled by the main control unit of the drill bit processing machine tool.

[0035] In a further preferred embodiment of this utility model, such as Figure 2 and Figure 3As shown, the pneumatic adjustment mechanism 6 includes a slider 61 and a piston cylinder 62. One end of the slider 61 is rotatably connected to the gear 5, and the motor 9 is fixedly connected to the slider 61 through a bracket. A piston rod 63 is slidably installed inside the piston cylinder 62, and the end of the piston rod 63 near the slider 61 is fixedly connected to the slider 61. A spring 64 is wound around the outer periphery of the piston rod 63, and the two ends of the spring 64 are fixedly connected to the piston rod 63 and the inner wall of the piston cylinder 62, respectively.

[0036] In this embodiment, please refer to Figure 3 As shown, when gas is injected into the piston cylinder 62, due to the thrust of the spring 64 on the piston rod 63, the gas injected into the piston cylinder 62 first forms a high-pressure chamber inside the piston cylinder 62, thereby applying a thrust towards the gear ring 4 to the piston rod 63. After the pressure in the high-pressure chamber inside the piston cylinder 62 reaches the threshold, the thrust applied by the high-pressure chamber to the piston rod 63 cancels the thrust of the spring 64 on the piston rod 63. As the pressure inside the piston cylinder 62 further increases, the piston rod 63 can be gradually pushed to compress the spring 64, thereby gradually pushing part of the piston rod 63 out of the piston cylinder 62 to reduce the gap between the gear 5 and the gear ring 4.

[0037] When the gas is extracted from the piston cylinder 62, as the pressure inside the piston cylinder 62 decreases, the spring 64 gradually pushes the piston rod 63, which has been pushed out of the piston cylinder 62, back into the piston cylinder 62. The device has a high degree of automation and is convenient to use.

[0038] In a further preferred embodiment of this utility model, such as Figure 2 and Figure 3 As shown, a groove 65 is provided on the mounting plate 1, and the other end of the slider 61 is T-shaped and inserted into the groove 65 to contact the inner wall of the groove 65. The piston cylinder 62 is fixedly connected to the inner wall of the groove 65.

[0039] In this embodiment, please refer to Figure 2 and Figure 3 As shown, when gear 5 approaches or separates from gear ring 4, gear 5 moves along a linear trajectory due to the mutual contact between slider 61 and the inner wall of groove 65.

[0040] In a further preferred embodiment of this utility model, such as Figure 3 and Figure 5 As shown, the pneumatic positioning mechanism 7 includes several air storage grooves 71, which are opened on the side of the gear ring 4 near the mounting plate 1. A piston push rod 73 is slidably installed in the air storage groove 71, and a ball bearing 74 is rotatably installed in the piston push rod 73. A positioning groove 72 is opened on the mounting plate 1 at the position corresponding to the air storage groove 71, and one end of the ball bearing 74 near the corresponding positioning groove 72 is inserted into the corresponding positioning groove 72 and contacts the inner wall of the corresponding positioning groove 72.

[0041] In this embodiment, please refer to Figure 3 and Figure 5 As shown, when the drill bit is flipped, the air extraction device 3 extracts the gas from the air storage tank 71 (the number of air storage tanks 71 can be 60 or 120, etc.). As the gas in the air storage tank 71 decreases, the pressure in the air storage tank 71 gradually decreases, thereby gradually reducing the thrust on the piston rod 73 towards the mounting plate 1, which in turn reduces the contact force between the ball 74 and the inner wall of the positioning groove 72. At this time, when the motor 9 drives the gear ring 4 to rotate through the gear 5, it only needs to overcome a small resistance to drive the round rod 2 to rotate.

[0042] After the drill bit is rotated and adjusted, the gas inside the gas storage tank 71 pushes the piston rod 73, and the ball 74 automatically inserts into the positioning groove 72 and abuts against the inner wall of the positioning groove 72, thereby applying a constraint force to the toothed ring 4 so that the angle after the drill bit is rotated and adjusted remains stable.

[0043] In a further preferred embodiment of this utility model, such as Figure 3 - Figure 5 As shown, the connecting mechanism 8 includes an annular groove 81, which is opened on the inner ring wall of the toothed ring 4, and the interior of the annular groove 81 communicates with the interior of the gas storage tank 71. A circular cavity 82 is opened at the axial position of the circular rod 2. A conduit 83 is provided in the mounting groove of the mounting plate 1, and one end of the conduit 83 is connected to one end of the air extraction device 3. The other end of the conduit 83 is inserted into the circular cavity 82 and rotatably connected to the circular rod 2. Several connecting holes 84 are opened on the outer peripheral wall of the circular rod 2, and the interior of each connecting hole 84 communicates with the interior of the circular cavity 82 and the interior of the annular groove 81.

[0044] In this embodiment, please refer to Figure 3 - Figure 5 As shown, during the rotation of the round rod 2, since the annular groove 81 and the connecting hole 84 are always connected, the pumping device 3 can still continuously extract gas from the gas storage tank 71 through the conduit 83, the circular cavity 82, the connecting hole 84 and the annular groove 81 during the rotation of the round rod 2, without affecting the rotation of the round rod 2.

[0045] In a further preferred embodiment of this utility model, such as Figure 3 and Figure 4 As shown, a connecting pipe 85 is fixedly installed inside the wall of the mounting plate 1, and both ends of the connecting pipe 85 are respectively connected to the joint of the piston cylinder 62 and the opening at the other end of the air extraction device 3.

[0046] In this embodiment, please refer to Figure 3 and Figure 4As shown, the gas extracted by the gas storage tank 71 by the gas extraction device 3 is directly injected into the piston cylinder 62 through the connecting pipe 85 to form an internal gas circulation between the gas storage tank 71 and the piston cylinder 62. This ensures that the piston rod 63 will not drive the gear 5 to move closer to the gear ring 4 when the contact force between the ball 74 and the inner wall of the positioning groove 72 is not reduced.

[0047] Working principle: When using the drill bit flipping device of this improved drill bit processing table, the drill bit material is inserted into the chuck, and the drill bit material is clamped and positioned by the chuck.

[0048] When adjusting the angle of the drill bit, the air extraction device 3 is activated to continuously extract gas from the air storage tank 71 through the conduit 83, the circular cavity 82, the connecting hole 84 and the annular groove 81. As the gas in the air storage tank 71 decreases, the pressure in the air storage tank 71 gradually decreases, thereby gradually reducing the thrust on the piston rod 73 toward the mounting plate 1, which in turn reduces the contact force between the ball 74 and the inner wall of the positioning groove 72, so as to reduce the constraint force on the toothed ring 4 when it rotates.

[0049] The gas extracted by the pumping device 3 is directly injected into the piston cylinder 62 through the connecting pipe 85. Due to the thrust of the spring 64 on the piston rod 63, the gas injected into the piston cylinder 62 first creates a high-pressure chamber, thereby applying a thrust towards the toothed ring 4 to the piston rod 63. After the pressure in the high-pressure chamber in the piston cylinder 62 reaches a threshold, the thrust applied by the high-pressure chamber to the piston rod 63 counteracts the thrust of the spring 64 on the piston rod 63. As the pressure in the piston cylinder 62 further increases, the piston rod 63 can be gradually pushed to compress the spring 64, and thus gradually... Part of the piston rod 63 is pushed out from the piston cylinder 62 to reduce the gap between the gear 5 and the gear ring 4, so that the gear 5 and the gear ring 4 mesh. At this time, the motor 9 drives the gear 5 to rotate, and the drill bit can be rotated and adjusted by the gear ring 4, the round rod 2 and the chuck. At this time, since the contact force between the ball 74 and the inner wall of the positioning groove 72 is very small, when the motor 9 drives the gear ring 4 to rotate, the ball 74 can be squeezed out of the positioning groove 72 directly along the outer arc wall of the ball 74. This state can also be maintained to continuously drive the drill bit to rotate in order to cope with different processing operations of the drill bit.

[0050] After the drill bit's tilting adjustment is completed, the motor 9 stops running. At this time, because the air storage tank 71 still has a relatively low-pressure chamber, the gas in the air storage tank 71 pushes the piston rod 73, causing the ball bearing 74 to automatically insert into the positioning groove 72 and abut against the inner wall of the positioning groove 72, thereby applying a restraining force to the gear ring 4 to keep the angle of the drill bit tilting adjustment stable. Then, the air extraction device 3 starts, and the gas injected into the piston cylinder 62 is extracted through the connecting pipe 85. At this time, as the pressure in the piston cylinder 62 decreases, the spring 64 gradually moves from the pressure inside the piston cylinder 62 to the pressure inside the piston cylinder 62. The piston rod 63, which was pushed out of the piston cylinder 62, is pushed back into the piston cylinder 62, so that the gear 5 and the gear ring 4 are directly disconnected. At the same time, the gas drawn by the air extraction device 3 is directly injected into the air storage tank 71 through the conduit 83, the circular cavity 82, the connecting hole 84 and the annular groove 81, so that the pressure in the air storage tank 71 increases rapidly, thereby applying a huge thrust to the piston push rod 73, so that the contact force between the ball 74 and the inner wall of the positioning groove 72 increases rapidly, thereby locking the position between the gear ring 4 and the mounting plate 1, so that the angle after the drill bit is rotated and adjusted remains stable.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A drill bit turning device for a drill bit processing table, comprising a chuck and a mounting plate (1); Its features are, Also includes: A round rod (2) has one end rotatably mounted in the mounting groove of the mounting plate (1) via a bearing, and the other end is fixedly connected to a clamp. The mounting groove of the mounting plate (1) is provided with an air extraction device (3), and the air extraction device (3) is clearance-fitted with the round rod (2). A toothed ring (4) is fixedly sleeved on the outer periphery of the round rod (2). Gear (5) is located on the outer periphery of gear ring (4). A motor (9) is provided on one side of gear (5), and the driving end of motor (9) is fixedly connected to gear (5). A pneumatic adjustment mechanism (6) is provided on the other side of gear (5) for adjusting the position of gear (5). A pneumatic positioning mechanism (7) is located inside the gear ring (4) and is used for constraining and positioning between the gear (5) and the mounting plate (1). The two ends of the air extraction device (3) are connected by a connecting mechanism (8) between the pneumatic positioning mechanism (7) and the pneumatic adjustment mechanism (6).

2. The drill bit flipping device for a drill bit processing table according to claim 1, characterized in that: The pneumatic adjustment mechanism (6) includes a slider (61) and a piston cylinder (62). One end of the slider (61) is rotatably connected to the gear (5), and the motor (9) is fixedly connected to the slider (61) through a bracket. A piston rod (63) is slidably installed inside the piston cylinder (62), and the end of the piston rod (63) near the slider (61) is fixedly connected to the slider (61). A spring (64) is wound around the outer periphery of the piston rod (63), and the two ends of the spring (64) are fixedly connected to the inner wall of the piston rod (63) and the piston cylinder (62) respectively.

3. The drill bit flipping device for a drill bit processing table according to claim 2, characterized in that: The mounting plate (1) has a sliding groove (65), and the other end of the slider (61) is T-shaped and inserted into the sliding groove (65) to contact the inner wall of the sliding groove (65). The piston cylinder (62) is fixedly connected to the inner wall of the sliding groove (65).

4. The drill bit flipping device for a drill bit processing table according to claim 3, characterized in that: The pneumatic positioning mechanism (7) includes several air storage slots (71), which are opened on the side of the gear ring (4) near the mounting plate (1). A piston push rod (73) is slidably installed in the air storage slot (71), and a ball (74) is rotatably installed in the piston push rod (73). A positioning slot (72) is opened on the mounting plate (1) at the position corresponding to the air storage slot (71), and one end of the ball (74) near the corresponding positioning slot (72) is inserted into the corresponding positioning slot (72) and contacts the inner wall of the corresponding positioning slot (72).

5. The drill bit flipping device for a drill bit processing table according to claim 4, characterized in that: The connecting mechanism (8) includes an annular groove (81) which is opened on the inner ring wall of the toothed ring (4), and the interior of the annular groove (81) is connected to the interior of the gas storage tank (71). A circular cavity (82) is opened at the axial position of the round rod (2). A conduit (83) is provided in the mounting groove of the mounting plate (1), and one end of the conduit (83) is connected to one end of the air extraction device (3). The other end of the conduit (83) is inserted into the circular cavity (82) and rotatably connected to the round rod (2). A number of connecting holes (84) are opened on the outer peripheral wall of the round rod (2), and the interior of each connecting hole (84) is connected to the interior of the circular cavity (82) and the interior of the annular groove (81).

6. The drill bit flipping device for a drill bit processing table according to claim 5, characterized in that: The mounting plate (1) is fixedly equipped with a connecting pipe (85) inside the plate wall, and the two ends of the connecting pipe (85) are respectively connected to the joint of the piston cylinder (62) and the opening at the other end of the air extraction device (3).

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