Drill bit with double blades

Abstract

The utility model discloses a drill bit with double blades, which comprises supporting seats, a base, a transmission mechanism and a double-blade drill bit, the number of the supporting seats is two, the supporting seats are symmetrically fixed on two sides of the base, the transmission mechanism is arranged on the base, and the double-blade drill bit is connected and locked on the transmission mechanism. The double-blade drilling machine has the advantages that the driven rotating disc can synchronously rotate along with the driving rotating disc through the belt, then the double-blade drill bit is driven to rotate to machine a workpiece, and meanwhile through the arrangement of the transmission mechanism, when the drilling position of the double-blade drill bit needs to be adjusted, the double-blade drill bit can be conveniently adjusted. The sliding seat is in threaded linkage through rotation of the lead screw, then the double-blade drill bit is driven to change the position, the driving rod and the driven rod are driven to be in overall linkage, the belt can still be tightly attached to the driving rotary disc, the driven rotary disc and the tensioning wheel, the double-blade drill bit is driven to rotate, and the situation that the position of the whole device needs to be adjusted is avoided; time and labor are saved and operation is simple.

Description

Technical Field

[0001] The utility model relates to a drill bit, in particular to a drill bit with double blades, belonging to the technical field of drill bits. Background Art

[0002] In the hole-forming process, a drill bit is required to form a hole through cutting by the drill bit. Therefore, the drill bit is an important tool component. Among the existing drill bits, there are single-sided blades and double-sided blades. In terms of drilling efficiency, the efficiency of the double-sided blade is greater than that of the single-sided blade, but the cost of the single-sided blade is lower than that of the double-sided blade. Therefore, both single-sided and double-sided blade drill bits are widely used.

[0003] However, there are still certain problems with the existing double-blade drill bits. For example, in a drill bit device with double blades disclosed in publication number CN208341819U, although the drill bit is no longer composed of a single-sided blade and a base by designing a left blade rod and a right blade rod, and the hole body is formed by cutting the single-sided blade, thereby realizing the secondary processing of the hole body and improving the index requirements of the hole body, when the drill bit is drilling a workpiece, it is often necessary to properly adjust the position of the drill bit according to actual conditions. However, since the drill bit is generally directly connected to the power mechanism on the machine tool, it is necessary to adjust it together with the power mechanism when adjusting it. The power mechanism is generally heavy and large in size, so it is not convenient to adjust, and it is also time-consuming and labor-intensive to adjust, which seriously affects work efficiency. Utility Model Content

[0004] The technical solution of the present utility model addresses the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. Specifically, the purpose of the present utility model is to solve the above-mentioned shortcomings in the existing technology and to propose a drill bit with double blades.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A drill bit with double blades, comprising a support seat, a base, a transmission mechanism and a double blade drill bit, wherein two support seats are provided and symmetrically fixed on both sides of the base, the transmission mechanism is provided on the base, and the double blade drill bit is connected and locked to the transmission mechanism;

[0007] The transmission mechanism includes a limit slot, a sliding seat, an active rod, a driven rod, an active turntable, a servo motor, a driven turntable and a docking tube, the limit slot is arranged on the base, the sliding seat is slidably engaged in the limit slot, and two active rods and driven rods are respectively provided, two adjacent active rods are rotatably connected to the sliding seat, two adjacent driven rods are rotatably connected to the base, and the end points of the active rod and the driven rod are rotatably connected, the active turntable is rotatably connected to the connection of the two adjacent driven rods, the servo motor is fixed to the bottom of the base, and the output shaft of the servo motor is coaxially connected to the active turntable, the driven turntable is rotatably connected to the sliding seat and is located at the connection of the two adjacent active rods, the docking tube is coaxially fixed at the top axis center of the driven turntable, and the double-blade drill bit is connected in the docking tube.

[0008] As a further solution of the present invention: the transmission mechanism also includes a belt, a guide wheel and a first tensioner, the guide wheel is rotatably connected to the connection between the active rod and the driven rod, the first tensioner is rotatably connected to one of the driven rods, and the belt is sleeved on the outside of the active turntable, the driven turntable, the guide wheel and the first tensioner.

[0009] As a further solution of the present invention: the transmission mechanism also includes a base, a block and a second tensioning wheel, the base is arranged on one of the active rods, and a slot is provided in the base, the block is slidably engaged in the slot, and the second tensioning wheel is rotatably connected to the block and abuts against the belt.

[0010] As a further solution of the present invention: a positioning rod is fixed in the slot of the holder, the clamping block is slidably connected to the positioning rod, and a pressure spring is sleeved on the positioning rod, and the pressure spring abuts against one side of the slot and between the clamping block.

[0011] As a further solution of the present invention: a screw rod is rotatably connected to the center of the limiting groove, and a screw hole is provided through the sliding seat, and the screw rod is threadedly engaged with the screw hole.

[0012] As a further solution of the present invention: a protrusion is provided at the bottom of the sliding seat, the cross-section of the protrusion and the limiting groove are both trapezoidal structures, and the protrusion is slidably engaged in the limiting groove.

[0013] The beneficial effects of the utility model are:

[0014] The present invention uses a belt to enable the driven turntable to rotate synchronously with the active turntable, thereby driving the double-blade drill to rotate and process the workpiece. At the same time, through the setting of the transmission mechanism, when the drilling position of the double-blade drill needs to be adjusted, the sliding seat thread is linked by the rotation of the screw rod, thereby driving the double-blade drill to change its position, and driving the active rod and the driven rod to be linked as a whole, so that the belt can still fit closely with the active turntable, the driven turntable and the tensioning pulley, and drive the double-blade drill to rotate, avoiding the need to adjust the position of the entire device, saving time and effort, and simple operation, thereby greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the active rod and its overall connection structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the card block connection structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the driven rod and its overall connection structure of the utility model.

[0019] In the figure: 1. Support seat, 2. Base, 3. Transmission mechanism, 31. Limiting groove, 32. Sliding seat, 33. Active rod, 34. Driven rod, 35. Active turntable, 36. Servo motor, 37. Driven turntable, 38. Docking sleeve, 39. Belt, 310. Guide wheel, 311. First tensioning wheel, 312. Clamping seat, 313. Block, 314. Second tensioning wheel, 315. Positioning rod, 316. Pressure spring, 317. Screw, 4. Double-blade drill bit. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0021] like Figures 1 to 4 As shown, a drill bit with double blades includes a support base 1, a base 2, a transmission mechanism 3 and a double blade drill bit 4. Two support bases 1 are provided and symmetrically fixed on both sides of the base 2. The transmission mechanism 3 is provided on the base 2, and the double blade drill bit 4 is connected and locked to the transmission mechanism 3.

[0022] The transmission mechanism 3 includes a limiting slot 31, a sliding seat 32, an active rod 33, a driven rod 34, a driving rotary disk 35, a servo motor 36, a driven rotary disk 37 and a docking tube 38. The limiting slot 31 is provided on the base 2, and the sliding seat 32 is slidably engaged in the limiting slot 31. The active rod 33 and the driven rod 34 are respectively provided with two, and the two adjacent active rods 33 are rotatably connected to the sliding seat 32, and the two adjacent driven rods 34 are rotatably connected to the base 2, and the end points of the active rod 33 and the driven rod 34 are rotatably connected, the active rotary disk 35 is rotatably connected to the connection point of the two adjacent driven rods 34, the servo motor 36 is fixed to the bottom of the base 2, and the output shaft of the servo motor 36 is coaxially connected to the active rotary disk 35, the driven rotary disk 37 is rotatably connected to the sliding seat 32, and is located at the connection point of the two adjacent active rods 33, the docking tube 38 is coaxially fixed at the top axis center of the driven rotary disk 37, and the double-blade drill bit 4 is connected in the docking tube 38;

[0023] The transmission mechanism 3 also includes a belt 39, a guide wheel 310 and a first tensioning wheel 311. The guide wheel 310 is rotatably connected to the connection between the active rod 33 and the driven rod 34. The first tensioning wheel 311 is rotatably connected to one of the driven rods 34. The belt 39 is sleeved on the outside of the active turntable 35, the driven turntable 37, the guide wheel 310 and the first tensioning wheel 311.

[0024] A screw rod 317 is rotatably connected to the center of the limiting groove 31 , and a screw hole is provided through the sliding seat 32 , and the screw rod 317 is threadedly engaged with the screw hole.

[0025] In the present invention, the belt 39 is used to enable the driven turntable 37 to rotate synchronously with the active turntable 35, thereby driving the double-blade drill bit 4 to rotate and process the workpiece. At the same time, through the setting of the transmission mechanism 3, when the drilling position of the double-blade drill bit 4 needs to be adjusted, the rotation of the screw rod 317 causes the sliding seat 32 to be threadedly linked, thereby driving the double-blade drill bit 4 to change its position, and driving the active rod 33 and the driven rod 34 to be linked as a whole, so that the belt 39 can still fit tightly with the active turntable 35, the driven turntable 37 and the tensioning pulley, and drive the double-blade drill bit 4 to rotate, avoiding the need to adjust the position of the entire device, saving time and effort, and simple operation, thereby greatly improving work efficiency. Example 2

[0026] like Figures 1 to 4 As shown, in addition to all the technical features of the first embodiment, this embodiment also includes:

[0027] The transmission mechanism 3 also includes a base 312, a block 313 and a second tensioning pulley 314. The base 312 is arranged on one of the active rods 33, and a slot is provided in the base 312. The block 313 is slidably engaged in the slot. The second tensioning pulley 314 is rotatably connected to the block 313 and abuts against the belt 39. The belt 39 is squeezed respectively by the first tensioning pulley 311 and the second tensioning pulley 314, so that the belt 39 is tightly fitted to the active turntable 35 and the driven turntable 37.

[0028] A positioning rod 315 is fixed in the slot of the holder 312, and the block 313 is slidably connected to the positioning rod 315, and a pressure spring 316 is sleeved on the positioning rod 315, and the pressure spring 316 abuts against one side of the slot and between the block 313. The elastic force of the pressure spring 316 pushes the holder 312 to move, so that when the active rod 33 and the driven rod 34 are linked, the second tensioner 314 can always abut against the belt 39.

[0029] A protrusion is provided at the bottom of the sliding seat 32. The cross-sections of the protrusion and the limiting groove 31 are both trapezoidal structures, and the protrusion is slidably engaged in the limiting groove 31. The sliding seat 32 is limited by the protrusion to prevent the sliding seat 32 from slipping.

[0030] Working principle: When using this drill bit, first adjust the double-blade drill bit 4 to the appropriate position. During adjustment, rotate the screw 317 to make the sliding seat 32 threaded and linked, thereby driving the double-blade drill bit 4 to move to the specified position. While the sliding seat 32 moves, the active rod 33 and the driven rod 34 are linked as a whole. At this time, the belt 39 is still tightly fitted with the active turntable 35, the driven turntable 37 and the first tensioner 311 and the second tensioner 314. Then start the servo motor 36 to drive the active turntable 35 to rotate, and through the belt 39, the driven turntable 37 can rotate synchronously with the active turntable 35, thereby driving the double-blade drill bit 4 to rotate and perform processing operations on the workpiece.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A drill bit with double blades, comprising a support seat (1), a base (2), a transmission mechanism (3) and a double blade drill bit (4), characterized in that: Two support seats (1) are provided and symmetrically fixed on both sides of the base (2); the transmission mechanism (3) is provided on the base (2); and the double-blade drill bit (4) is connected and locked on the transmission mechanism (3); The transmission mechanism (3) comprises a limit groove (31), a sliding seat (32), an active rod (33), a driven rod (34), an active turntable (35), a servo motor (36), a driven turntable (37) and a docking tube (38), wherein the limit groove (31) is provided on the base (2), the sliding seat (32) is slidably engaged in the limit groove (31), two active rods (33) and two driven rods (34) are respectively provided, two adjacent active rods (33) are rotatably connected to the sliding seat (32), two adjacent driven rods (34) are rotatably connected to the base (2), and the active rods (33) and the driven rods (34) are rotatably connected to the base (2), and the active rods (33) and the driven rods (34) are rotatably connected to the base (2). The end points of the driving rod (33) and the driven rod (34) are rotatably connected, the driving turntable (35) is rotatably connected to the connection point of two adjacent driven rods (34), the servo motor (36) is fixed to the bottom of the base (2), and the output shaft of the servo motor (36) is coaxially connected to the driving turntable (35), the driven turntable (37) is rotatably connected to the sliding seat (32) and is located at the connection point of two adjacent driving rods (33), the docking tube (38) is coaxially fixed to the top axis of the driven turntable (37), and the double-blade drill bit (4) is connected in the docking tube (38).

2. A drill bit with double blades according to claim 1, characterized in that: The transmission mechanism (3) further comprises a belt (39), a guide wheel (310) and a first tension wheel (311); the guide wheel (310) is rotatably connected to the connection point of the active rod (33) and the driven rod (34); the first tension wheel (311) is rotatably connected to one of the driven rods (34); and the belt (39) is sleeved on the outside of the active turntable (35), the driven turntable (37), the guide wheel (310) and the first tension wheel (311).

3. The drill bit with double blades according to claim 2, characterized in that: The transmission mechanism (3) further comprises a clamping seat (312), a clamping block (313) and a second tensioning wheel (314); the clamping seat (312) is arranged on one of the active rods (33), and a notch is provided in the clamping seat (312); the clamping block (313) is slidably clamped in the notch; the second tensioning wheel (314) is rotatably connected to the clamping block (313) and abuts against the belt (39).

4. A drill bit with double blades according to claim 3, characterized in that: A positioning rod (315) is fixed in the slot of the holder (312), the clamping block (313) is slidably connected to the positioning rod (315), and a pressure spring (316) is sleeved on the positioning rod (315), and the pressure spring (316) abuts between one side of the slot and the clamping block (313).

5. The drill bit with double blades according to claim 1, characterized in that: A screw rod (317) is rotatably connected to the center of the limiting groove (31), and a screw hole is provided through the sliding seat (32), and the screw rod (317) is threadedly engaged with the screw hole.

6. The drill bit with double blades according to claim 1, characterized in that: A protrusion is provided at the bottom of the sliding seat (32), and the cross-sections of the protrusion and the limiting groove (31) are both trapezoidal in structure, and the protrusion is slidably engaged in the limiting groove (31).

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