Hard alloy inner-cooling straight fluted drilling reamer

Abstract

The utility model belongs to the technical field of drilling reamers, particularly relates to a hard alloy inner-cooling straight fluted drilling reamer, and aims to solve the problems that an existing drill bit can generate heat during use and cannot dissipate the heat, so that a workpiece is easy to overheat during processing, and the workpiece is easy to deform, the following scheme is provided: the hard alloy inner-cooling straight fluted drilling reamer comprises a reamer body, a connecting rod is fixed to the lower surface of the reamer body, a fixed reamer handle is fixed to the lower surface of the connecting rod, and the outer surface of the fixed reamer handle and the outer surface of the reamer body are each sleeved with a cooling mechanism used for cooling the reamer. And the cooling mechanism comprises a protective shell. Cooling liquid is conveyed into the protective shell through the conveying pump, flows into the water outlet in the reamer body through the through hole formed in the connecting rod and is discharged through the drainage groove in the tail end to cool a workpiece and the reamer body, and when flowing out, the cooling liquid passes through the chip removal groove to flush impurities in the chip removal groove to the outside. And the auxiliary chip removal effect is achieved.

Description

Technical Field

[0001] The utility model relates to a straight groove drill reamer, in particular to a hard alloy internally cooled straight groove drill reamer, belonging to the technical field of drill reamers. Background Art

[0002] Carbide internal coolant straight flute drill reamers are primarily used for high-precision hole machining. Internal coolant technology improves cutting efficiency and reduces cutting temperatures, while the straight flute design facilitates chip evacuation and maintains cutting stability. Combining the high hardness and wear resistance of carbide with the excellent cooling performance of internal coolant technology, these drill reamers are suitable for precision machining of a wide range of materials.

[0003] In the prior art, there is a high-performance drill cutter disclosed in announcement number CN218503421U, which includes a drill rod and a drill bit; the drill rod is located at the upper end of the drill bit, and an insertion rod is provided at the upper end of the drill bit. The insertion rod and the drill bit are integrated, and a cavity is provided inside the drill rod, and a socket is provided at one end of the cavity. One end of the insertion rod extends into the cavity through the socket, and a spring is provided at the upper end of the insertion rod inside the cavity, and the upper end of the spring is welded to the upper end of the cavity. It drives the drill rod and the drill bit downward through the device. When the drill bit contacts the workpiece, the pressure between the drill bit and the workpiece will be buffered by the spring inside the cavity, which can reduce the instantaneous pressure between the drill bit and the workpiece, avoid the instantaneous contact pressure between the drill bit and the workpiece being high, which causes greater wear on the drill bit, and play a certain protective role for the drill bit.

[0004] Although the above technical solution can reduce the instantaneous pressure between the drill bit and the workpiece and avoid high instantaneous contact pressure between the drill bit and the workpiece, when it is used, the drill bit generates heat, and it is unable to dissipate the heat, which makes the workpiece easily overheated during processing and easily deformed. In view of this, a cemented carbide internal cooling straight groove drill reamer is provided to overcome the above defects. Utility Model Content

[0005] The utility model provides a carbide internally cooled straight groove drill reamer to solve the above-mentioned problem that the drill bit generates heat when in use and cannot dissipate the heat, resulting in overheating during workpiece processing and deformation of the workpiece.

[0006] The utility model achieves the above-mentioned object through the following technical solutions: A cemented carbide internally cooled straight groove drill reamer comprises a reamer body, a connecting rod is fixed to the lower surface of the reamer body, a fixed shank is fixed to the lower surface of the connecting rod, and the outer surfaces of the fixed shank and the reamer body are both provided with a cooling mechanism for cooling the reamer;

[0007] The cooling mechanism comprises a protective shell, the protective shell is arranged on the outer surfaces of the fixed tool shank and the reamer body, the outer surface of the connecting rod is provided with a through hole, and the inner wall of the protective shell is provided with two fixed bearings which are sleeved on the connecting rod.

[0008] As a further scheme of the utility model: two groups of wear-resistant rings are arranged in the protective shell, and the inner walls of the two groups of wear-resistant rings are tightly connected with the outer surfaces of the fixed tool shank and the reamer body.

[0009] As a further scheme of the utility model: two groups of sealing grooves are arranged in the inner surface of the protective shell, and the two groups of sealing grooves are all connected with sealing rings which are fixed on the connecting rod.

[0010] As a further scheme of the utility model: the upper surface of the reamer body is provided with a water outlet.

[0011] As a further scheme of the utility model: the upper end of the reamer body is provided with a drainage groove which is in communication with the water outlet.

[0012] As a further scheme of the utility model: the outer surface of the reamer body is provided with a chip removal groove, and the outer wall of the protective shell is fixed with a fixing rod.

[0013] As a further scheme of the utility model: the tail end of the fixing rod is telescopically connected with a movable pipe, and the tail end of the movable pipe is fixed with a fixed block.

[0014] The utility model discloses the beneficial effect is: cooling liquid is sent to the protective shell inside through the delivery pump, passes through the through hole that the connecting rod is arranged, and cooling liquid can flow into the water outlet in the reamer body, is discharged through the tail end drainage groove, and then the workpiece and reamer body are cooled, and cooling liquid flows out and will pass through the chip removal groove and washes out the impurity in the chip removal groove to the outside, realizes the effect of auxiliary chip removal.

[0015] Through the fixed bearing in the protective shell, the connecting rod does not rotate when rotating, so that the normal delivery of cooling liquid is guaranteed, the wear-resistant ring plays the effect of wear resistance, and the sealing ring arranged in the sealing groove can play the sealing effect. ACCURATE DRAWINGS

[0016] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0017] Figure 2 It is the sectional structure schematic diagram of the protective shell of the utility model;

[0018] Figure 3 It is the three-dimensional structure schematic diagram of the reamer body of the utility model;

[0019] Figure 4 The utility model discloses Figure 2 The enlarged view of A in the middle.

[0020] In the drawing: 1, reamer body;2, connecting rod;3, fixed tool handle;4, protective shell;41, through hole;42, fixed bearing;43, water inlet;44, wear-resistant ring;45, sealing groove;46, sealing ring;5, water outlet;6, drainage groove;7, chip removal groove;8, fixed rod;81, movable pipe;82, fixed block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model. Embodiment one

[0022] As Figures 1 to 4 shown, a kind of hard alloy inner cooling straight flute drill reamer, including reamer body 1, the lower surface of reamer body 1 is fixed with connecting rod 2, the lower surface of connecting rod 2 is fixed with fixed tool handle 3, the outer surface of fixed tool handle 3 and reamer body 1 is all equipped with cooling mechanism for the cooling of reamer;

[0023] The cooling mechanism comprises a protective shell 4 arranged on the outer surfaces of the fixed tool holder 3 and the reamer body 1, the outer surface of the connecting rod 2 is provided with a through hole 41, the inner wall of the protective shell 4 is provided with two fixed bearings 42 sleeved on the connecting rod 2, the outer surface of the protective shell 4 is communicated with a water inlet 43, the inside of the protective shell 4 is provided with two groups of wear-resistant rings 44, the inner walls of the two groups of wear-resistant rings 44 are respectively tightly connected with the outer surfaces of the fixed tool holder 3 and the reamer body 1, the inner surfaces of the protective shell 4 are provided with two groups of sealing grooves 45, the interiors of the two groups of sealing grooves 45 are respectively connected with sealing rings 46 fixed on the connecting rod 2, the upper surface of the reamer body 1 is provided with a water outlet 5, the upper end of the reamer body 1 is provided with a drainage groove 6 communicated with the water outlet 5, the machine tool drives the fixed tool holder 3 to rotate, thereby driving the reamer body 1 to rotate, and the workpiece is machined, at the same time, the external cooling liquid is pumped into the inside of the protective shell 4 through the conveying pump, the through hole 41 provided on the connecting rod 2 enables the cooling liquid to flow into the water outlet 5 in the reamer body 1, and then is discharged through the terminal drainage groove 6, thereby cooling the workpiece and the reamer body 1, and the cooling liquid flows out of the terminal of the reamer body 1 to the outside of the workpiece, and the cooling liquid flows out of the chip removal groove 7, thereby flushing the impurities in the chip removal groove 7 to the outside, achieving the effect of auxiliary chip removal, improving the practicability, the fixed bearings 42 in the inside of the protective shell 4 enable the connecting rod 2 to rotate without driving the protective shell 4 to rotate, ensuring the normal conveying of the cooling liquid, the wear-resistant rings 44 play the effect of wear resistance, and the sealing rings 46 arranged in the sealing grooves 45 can play the effect of sealing. Embodiment two

[0024] In addition to comprising all the technical features in embodiment one, the embodiment comprises that the outer surface of the reamer body 1 is provided with a chip removal groove 7, the outer wall of the protective shell 4 is fixed with a fixed rod 8, the terminal of the fixed rod 8 is telescopically connected with a movable pipe 81, the terminal of the movable pipe 81 is fixed with a fixed block 82, the fixed tool holder 3 is connected with the output shaft of the machining machine tool, then the fixed block 82 on the movable pipe 81 is connected with the machine tool shell, and the fixed rod 8 can pull the movable pipe 81, thereby adjusting the length of the movable pipe 81, facilitating the connection with the machine tool shell.

[0025] Working principle: before using the hard alloy inner cooling straight groove drill reamer, first assemble and install the reamer, connect and fix the fixed tool shank 3 and the output shaft of the machining machine tool, then connect the fixed block 82 on the movable pipe 81 and the machine tool shell, and through the fixed rod 8, the movable pipe 81 can be pulled, and the length of the movable pipe 81 is adjusted, which is convenient for connecting with the shell of the machine tool, then the fixed block 82 is fixed by using the screw, and the assembly of the reamer is completed, the external cooling liquid is connected through the conveying pipe and the water inlet 43, when in use, the machine tool drives the fixed tool shank 3 to rotate, thereby driving the reamer body 1 to rotate, and the workpiece is machined, at the same time, the external cooling liquid is pumped into the protective shell 4 through the conveying pump, the through hole 41 is arranged on the connecting rod 2, so that the cooling liquid can flow into the water outlet 5 in the reamer body 1, and then is discharged through the drainage groove 6 at the tail end, thereby cooling the workpiece and the reamer body 1, and the cooling liquid flows out of the tail end of the reamer body 1 to the outside of the workpiece, and when the cooling liquid flows out, it will pass through the chip removal groove 7, thereby flushing the impurities in the chip removal groove 7 to the outside, realizing the effect of auxiliary chip removal, improving the practicability, the fixed bearing 42 in the protective shell 4 can prevent the connecting rod 2 from rotating the protective shell 4 when rotating, ensuring the normal conveying of the cooling liquid, the wear-resistant ring 44 plays a wear-resistant effect, the sealing ring 46 in the sealing groove 45 can play a sealing effect, thereby preventing the cooling liquid from leaking.

[0026] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the above description, and it is intended to embrace all changes and modifications that fall within the meaning and scope of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0027] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A cemented carbide internally cooled straight groove drill reamer, comprising a reamer body (1), characterized in that: A connecting rod (2) is fixed to the lower surface of the reamer body (1), a fixed shank (3) is fixed to the lower surface of the connecting rod (2), and a cooling mechanism for cooling the reamer is provided on the outer surfaces of the fixed shank (3) and the reamer body (1); The cooling mechanism comprises a protective shell (4), the protective shell (4) being arranged on the outer surface of the fixed shank (3) and the reamer body (1), the outer surface of the connecting rod (2) being provided with a through hole (41), the inner wall of the protective shell (4) being provided with two fixed bearings (42) sleeved on the connecting rod (2), and the outer surface of the protective shell (4) being connected to a water inlet (43).

2. A cemented carbide internally cooled straight groove drill reamer according to claim 1, characterized in that: Two groups of wear-resistant rings (44) are installed inside the protective shell (4), and the inner walls of the two groups of wear-resistant rings (44) are tightly connected to the outer surfaces of the fixed handle (3) and the reamer body (1), respectively.

3. The cemented carbide internally cooled straight groove drill reamer according to claim 2, characterized in that: Two groups of sealing grooves (45) are formed on the inner surface of the protective shell (4), and the interiors of the two groups of sealing grooves (45) are connected to sealing rings (46) fixed on the connecting rod (2).

4. The cemented carbide internally cooled straight groove drill reamer according to claim 1, characterized in that: A water outlet (5) is provided on the upper surface of the reamer body (1).

5. The cemented carbide internally cooled straight groove drill reamer according to claim 4, characterized in that: The upper end of the reamer body (1) is provided with a drainage groove (6) which is in communication with the water outlet (5).

6. The cemented carbide internally cooled straight groove drill reamer according to claim 1, characterized in that: A chip removal groove (7) is provided on the outer surface of the reamer body (1), and a fixing rod (8) is fixed to the outer wall of the protective shell (4).

7. The cemented carbide internally cooled straight groove drill reamer according to claim 6, characterized in that: The end of the fixed rod (8) is telescopically connected to a movable tube (81), and the end of the movable tube (81) is fixed with a fixed block (82).

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