Reamer with coarse and fine dual-purpose structure

Abstract

The reamer comprises a reamer head, the upper end of the reamer head is fixedly connected with a clamping rod, the lower end of the reamer head is fixedly connected with a cooling liquid storage disc, an assembling groove is formed in the center of the lower surface of the cooling liquid storage disc, clamping grooves evenly penetrate through the top face of the assembling groove, and the clamping grooves are fixedly connected with the clamping rod. A cutter bar is installed below the cooling liquid storage disc, inserting rods are evenly fixed to the end face of the top end of the cutter bar, reaming blades are evenly fixed to the outer wall of the cutter bar, rough machining straight blades are arranged on the left side blade edges of the reaming blades, and finish machining round blades are arranged on the right side blade edges of the reaming blades. The reamer edge is divided into two edge structures of a rough machining straight edge and a finish machining round edge, the edge of the rough machining straight edge is straight and used for rough machining, the edge of the finish machining round edge has radian and used for finish machining, the reamer can finish rough machining, finish machining can be achieved, the reamer has double purposes, the rough machining and finish machining can be switched only by changing the turning direction of the reamer, and convenience and rapidness are achieved. And the trouble of disassembling and assembling the cutter and correcting and setting the cutter again is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of reamers, in particular to a reamer with a dual roughing and finishing structure. Background Technique

[0002] A reamer is used to ream the holes that have been drilled (or reamed) on the workpiece, mainly to improve the machining accuracy of the holes and reduce their surface roughness. It is a tool for the finish machining and semi-finish machining of holes, and the machining allowance is generally very small. The material of hand reamers is generally alloy tool steel (9SiCr), and the material of machine reamers is high-speed steel (HSS). Machine reamers are divided into straight shank machine reamers and taper shank machine reamers.

[0003] For existing reamers, one reamer can only achieve machining within a certain accuracy range. The reamer for rough machining cannot complete finish machining, and the reamer for finish machining cannot be directly used for rough machining. Therefore, during roughing and finishing, the reamer needs to be replaced, which will result in the phenomena of multiple tool loading and unloading and repeated tool setting, easily causing machining errors and being inconvenient and inefficient in operation.

[0004] Therefore, those skilled in the art have provided a reamer with a dual roughing and finishing structure to solve the problems raised in the above background technique. Content of the Utility Model

[0005] The purpose of the utility model is to provide a reamer with a dual roughing and finishing structure to solve the problem that existing reamers cannot achieve synchronous roughing and finishing as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A reamer with a dual roughing and finishing structure includes: a cutter head, the upper end of the cutter head is fixedly connected with a clamping rod, and the lower end of the cutter head is fixedly connected with a coolant storage plate. The center of the lower surface of the coolant storage plate is provided with an assembly groove, and the groove top surface of the assembly groove is uniformly penetrated with clamping grooves. A cutter bar is installed below the coolant storage plate, and the top end surface of the cutter bar is uniformly fixed with insertion rods. The top ends of the insertion rods are fixedly connected with clamping plates, and the top ends of the clamping plates are fixedly provided with buckles. The outer wall of the cutter bar is uniformly fixed with reaming edges. A rough machining straight edge is arranged on the left cutting edge of the reaming edge, and a finish machining circular edge is arranged on the right cutting edge of the reaming edge.

[0008] As a solution in the utility model, a fitting groove is arranged on the upper surface of the coolant storage plate, and a sealing ring is rotatably connected inside the fitting groove. The upper surface of the sealing ring is connected and communicated with a coolant injection pipe.

[0009] As a solution in the utility model, mounting grooves are uniformly arranged in a ring shape about the central axis on the lower surface of the coolant storage plate, and fixing plates are fixedly connected inside the mounting grooves.

[0010] As a solution in the present invention, the center of the lower surface of the fixing plate is connected with a cone, and the cone is connected to the inner cavity of the coolant storage tray.

[0011] As a solution in the present invention, the small ends of the cone openings are all facing downwards, and the cone openings and the reamer blades are staggered.

[0012] As a solution in the present invention, the clamping plates are evenly distributed in a ring shape about the central axis of the insertion rod, and the angle between the clamping plates and the insertion rod is 15°.

[0013] As a solution in the present invention, the card slots and the insertion rods are arranged in a one-to-one correspondence, and the sizes of the buckles and the bottom of the card slots match.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The reamer blade has two edge structures: a straight edge for roughing and a round edge for fine machining. The straight edge for roughing is straight and is used for rough machining, while the round edge for fine machining has an arc and is used for fine machining. That is, the reamer can complete both rough machining and fine machining, and it is a dual-purpose tool. Switching between roughing and fine machining only requires changing the direction of the reamer, which is convenient and fast, avoiding the trouble of disassembling and assembling the tool and re-calibrating the tool.

[0016] 2. A coolant storage tray is provided for storing coolant. A coolant injection pipe is used to inject coolant into the coolant storage tray. A tapered port is used to discharge coolant. The tapered port is separated from the reaming blade. The coolant flows down between two adjacent reaming blades to cool the reamer and also to wash away chips to prevent them from accumulating around the reamer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a reamer with a rough and fine dual-purpose structure.

[0018] Figure 2 This is a schematic diagram of the upper structure of the coolant storage tray in a reamer with a coarse and fine dual-purpose structure.

[0019] Figure 3 This is a schematic diagram of the lower structure of the coolant storage tray in a reamer with a coarse and fine dual-purpose structure.

[0020] Figure 4 This is a schematic diagram of the structure of the shank and blade of a reamer with a dual-purpose roughing and fine-finishing structure.

[0021] Figure 5 This is a schematic diagram of the structure of the clamping plate and buckle in a reamer with a dual-purpose roughing and fine-finishing structure.

[0022] In the figure: 1. Cutter head; 2. Clamping rod; 3. Coolant storage tray; 4. Matching groove; 5. Sealing ring; 6. Coolant injection pipe; 7. Mounting groove; 8. Fixing plate; 9. Cone mouth; 10. Assembly groove; 11. Clamping groove; 12. Cutter bar; 13. Insert rod; 14. Clamping plate; 15. Buckle; 16. Reaming blade; 17. Roughing straight blade; 18. Finishing round blade. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 5 The embodiment of the utility model provides a reamer with a coarse and fine dual-purpose structure, comprising: a cutter head 1, the upper end of the cutter head 1 is fixedly connected to a clamping rod 2, and the lower end of the cutter head 1 is fixedly connected to a coolant storage disk 3, the upper surface of the coolant storage disk 3 is provided with a matching groove 4, and the inner side of the matching groove 4 is rotatably connected to a sealing ring 5, the upper surface of the sealing ring 5 is connected and communicated with a coolant injection pipe 6, the lower surface of the coolant storage disk 3 is evenly provided with mounting grooves 7 in an annular shape about the central axis, and the inner sides of the mounting grooves 7 are fixedly connected to fixing plates 8, the lower surface centers of the fixing plates 8 are connected with tapered openings 9, and the tapered openings 9 are connected and communicated with the inner cavity of the coolant storage disk 3;

[0025] Specifically, the coolant storage tray 3 is an internal hollow structure for storing coolant. The top of the coolant storage tray 3 is closed by a rotatable sealing ring 5, and tapered openings 9 are evenly arranged at the bottom. A coolant injection pipe 6 is arranged on the sealing ring 5 for injecting coolant into the coolant storage tray 3. During the rotation of the reamer, the sealing ring 5 does not rotate with the reamer, so the injection of coolant will not be disturbed. The coolant can be injected into the coolant storage tray 3 at any time. The coolant in the coolant storage tray 3 is output downward through the tapered openings 9 to flush the reamer blade 16, cool the reamer, and also flush away the chips to prevent the chips from accumulating around the reamer.

[0026] An assembly groove 10 is provided at the center of the lower surface of the coolant storage tray 3, and a card groove 11 is evenly penetrated on the top surface of the assembly groove 10. A tool rod 12 is installed below the coolant storage tray 3, and an insertion rod 13 is evenly fixed on the top surface of the tool rod 12. The top of the insertion rod 13 is fixedly connected to a clamping plate 14, and the top of the clamping plate 14 is fixedly provided with a buckle 15. The outer wall of the tool rod 12 is evenly fixed with a reamer blade 16, and the small end of the cone mouth 9 is facing downward, and the cone mouth 9 and the reamer blade 16 are staggered.

[0027] Specifically, the tapered opening 9 is separated from the reaming edges 16, and there is a tapered opening 9 between the two reaming edges 16. In this way, there is a coolant flushing channel between the two reaming edges 16, whereby the reamer can be better cooled and the chips can be flushed away.

[0028] The clamping plates 14 are evenly distributed in a ring about the central axis of the insertion rod 13, and the angle between the clamping plates 14 and the insertion rod 13 is 15°. The card slots 11 are arranged in one-to-one correspondence with the insertion rod 13, and the dimensions between the snap fasteners 15 and the bottom of the card slots 11 are matched.

[0029] Specifically, the reamer adopts a detachable split design, and the tool shank 12 can be freely removed and replaced. The connection between the tool shank 12 and the coolant storage tray 3 is very simple and convenient. Only by inserting the insertion rod 13 into the card slot 11 correspondingly and making the snap fastener 15 fit well in the card slot 11 can the assembly between the tool shank 12 and the coolant storage tray 3 be realized. The disassembly and assembly between the tool shank 12 and the coolant storage tray 3 are convenient and the connection is firm.

[0030] The left cutting edge of the reaming edge 16 is provided with a rough machining straight edge 17, and the right cutting edge of the reaming edge 16 is provided with a finish machining circular edge 18.

[0031] Specifically, the reaming edge 16 is divided into two cutting edge structures, one is a rough machining straight edge 17 and the other is a finish machining circular edge 18. The rough machining straight edge 17 has a straight cutting edge for rough machining, and the finish machining circular edge 18 has a curved cutting edge for finish machining. The reamer can complete both rough machining and finish machining. Only by changing the rotation direction can the rough and finish machining be switched, which is convenient and fast, and avoids the trouble of disassembling and assembling the tool and re-calibrating the tool setting.

[0032] The working principle of the present utility model is as follows:

[0033] First, the tool shank 12 is assembled below the coolant storage tray 3, that is, the insertion rod 13 is inserted into the card slot 11 correspondingly and the snap fastener 15 fits well in the card slot 11. Then, the reamer is installed and fixed on the tool holder. After being firmly installed, the reaming operation can be carried out. During the machining process, coolant is continuously replenished into the coolant storage tray 3 through the coolant injection pipe 6. The coolant will flow out from each tapered opening 9 below the coolant storage tray 3 to cool down the reaming edge 16. At the same time, the flushing coolant can also wash away the chips to prevent accumulation. When rough machining the hole, control the rotation direction of the reamer so that the rough machining straight edge 17 is the cutting edge. When finish machining the hole, control the rotation direction of the reamer so that the finish machining circular edge 18 is the cutting edge. In this way, the rough and finish machining can be quickly switched without changing the tool.

[0034] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A reamer with a roughing and finishing dual-purpose structure, characterized in that include: A cutter head (1), wherein the upper end of the cutter head (1) is fixedly connected to a clamping rod (2), and the lower end of the cutter head (1) is fixedly connected to a coolant storage plate (3), an assembly groove (10) is provided at the center of the lower surface of the coolant storage plate (3), and a clamping groove (11) is uniformly passed through the top surface of the assembly groove (10), a cutter bar (12) is installed below the coolant storage plate (3), and an inserting rod (13) is uniformly fixed to the top end surface of the cutter bar (12), the top end of the inserting rod (13) is fixedly connected to a clamping plate (14), and the top end of the clamping plate (14) is fixedly provided with a buckle (15), and a reamer (16) is uniformly fixed to the outer wall of the cutter bar (12), the left edge of the reamer (16) is provided with a rough-machined straight edge (17), and the right edge of the reamer (16) is provided with a fine-machined round edge (18).

2. The reamer with a roughing and finishing dual-purpose structure according to claim 1, wherein, The upper surface of the coolant storage plate (3) is provided with a matching groove (4), and the inner side of the matching groove (4) is rotatably connected to a sealing ring (5), and the upper surface of the sealing ring (5) is connected to a coolant injection pipe (6).

3. The reamer with a roughing and finishing dual-purpose structure according to claim 1, wherein The lower surface of the coolant storage plate (3) is evenly provided with mounting grooves (7) in a ring shape about the central axis, and the inner sides of the mounting grooves (7) are fixedly connected with fixing plates (8).

4. A reamer with a roughing and finishing dual-purpose structure according to claim 3, characterized in that, The center of the lower surface of the fixing plate (8) is connected with a cone opening (9), and the cone opening (9) is connected and communicated with the inner cavity of the coolant storage tray (3).

5. The reamer with a roughing and finishing dual-purpose structure according to claim 4, characterized in that, The small ends of the tapered openings (9) are all facing downwards, and the tapered openings (9) and the reamer blades (16) are staggered.

6. A reamer with a roughing and finishing dual-purpose structure according to claim 1, characterized in that, The clamping plates (14) are evenly distributed in a ring shape about the central axis of the insertion rod (13), and the angle between the clamping plates (14) and the insertion rod (13) is 15°.

7. A reamer with a roughing and finishing dual-purpose structure according to claim 1, characterized in that, The clamping slot (11) and the inserting rod (13) are arranged in a one-to-one correspondence, and the size of the buckle (15) and the bottom of the clamping slot (11) are matched.

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