Reamer with reamer blade convenient to replace

Abstract

The reamer comprises a connecting column, an inserting groove is formed in the connecting column, a threaded groove is formed in the inserting groove, a reamer head is inserted into the inserting groove, a stepped through groove is formed in the reamer head, a threaded rod is inserted into the stepped through groove, and a reamer blade is arranged in the threaded rod. The bottom end of the screw rod penetrates through the inserting groove and is in threaded connection with the interior of the threaded groove, and an elastic piece is installed in the inserting groove. The screw rod is screwed to be separated from the threaded groove, then the screw rod is pulled out, the interior of the tool bit insertion groove is pulled out, and after the screw rod is loosened, under the thrust action of the elastic piece, the tool bit can be withdrawn from the insertion groove more conveniently in a labor-saving mode, the disassembling difficulty is reduced, and therefore the device has the elastic structure, and the tool bit can be disassembled conveniently. And the unfixed blade can be pulled out in a more labor-saving manner, the danger of disassembly operation is reduced, and the operation is easier.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of reamer, specifically, a reamer convenient to replace reamer blade. BACKGROUND

[0002] The reamer is a rotating tool with one or more teeth to remove a thin layer of metal from the surface of a machined hole. The reamer is a rotating finishing tool with straight or helical blades, used for hole expansion or hole repair. The reamer has a machining precision requirement higher than the drill bit due to the small amount of cutting. It can be operated manually or installed on a drill press. The reamer has one or more teeth to remove a thin layer of metal from the surface of a machined hole.

[0003] According to the use, there are hand reamer and machine reamer. The machine reamer can be divided into straight shank reamer and taper shank reamer. The hand reamer is straight shank type. In the actual machining process, the reamer often wears out or the reamer blade breaks, which requires replacing the entire reamer mechanism, resulting in waste of the overall structure of the reamer mechanism. Therefore, the independent replacement and disassembly of the tool bit are more in line with the actual use scene.

[0004] However, when replacing the blade, after disassembling the fixing bolt, the blade is tightly combined with the reamer as a whole, and force is needed to pull it out, which can easily hurt the hand and is dangerous to operate. UTILITY MODEL CONTENT

[0005] In view of the problems in the prior art, the purpose of the utility model is to provide a reamer convenient to replace the reamer blade to solve the above background technical problems.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme.

[0007] A reamer convenient to replace the reamer blade, comprising a connecting column, a slot is formed in the inside of the connecting column, a threaded groove is formed in the inside of the slot, a tool bit is inserted into the inside of the slot, a stepped through slot is formed in the inside of the tool bit, a screw rod is inserted into the inside of the stepped through slot, the bottom end of the screw rod passes through the slot and is screw connected to the inside of the threaded groove, a resilient member is installed in the inside of the slot, and the top of the resilient member is in contact with the bottom of the tool bit.

[0008] Further description of the above technical scheme: the resilient member comprises a spring and a contact ring, the bottom end of the spring is fixedly connected to the inside of the slot, the top end of the spring is fixedly connected with the contact ring, and the top of the contact ring is in contact with the bottom of the tool bit.

[0009] As the further description of the above technical solution: the inside of the insertion slot is fixedly connected with a guide ring, the inside of the guide ring is communicated with the threaded groove, the guide ring is sleeved on the outside of the screw rod, and the guide ring is located on the inside of the spring.

[0010] As the further description of the above technical solution: the outside of the top end of the connecting column is provided with a conical surface, the inside of the connecting column is provided with vertically distributed annular vertical channels, and the top end of the vertical channel extends to the outside of the conical surface.

[0011] As the further description of the above technical solution: the top end of the screw rod is fixedly connected with a nut, the outside of the nut is slid to the inside of the stepped through groove, and the inside of the nut is provided with an internal hexagonal groove.

[0012] As the further description of the above technical solution: the outside of the bottom end of the connecting column is provided with four square surfaces.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The elastic member generates a thrust force on the tool bit, so that after the screw rod is disassembled, the elastic force assists the tool bit to exit outward, so that the device has the advantages of using an elastic structure, the fixed tool bit is pulled out more labor-saving, the disassembly operation danger is reduced, and the device is more easy to operate. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the front view cross-sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the front view cross-sectional structure of the utility model; Figure 2

[0018] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the utility model.

[0019] Explanation of reference numerals in the drawing:

[0020] 1, connecting column; 2, insertion slot; 21, guide ring; 3, threaded groove; 4, tool bit; 5, stepped through groove; 6, screw rod; 61, nut; 62, internal hexagonal groove; 7, elastic member; 71, spring; 72, contact ring; 8, conical surface; 9, vertical channel; 10, square surface. 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.

[0022] Please refer to​Figures 1 to 4 The utility model discloses a reamer convenient to replace reamer blade, including connecting post 1, the inside of connecting post 1 is provided with the slot 2, the inside of slot 2 is provided with the thread groove 3, the inside of slot 2 is inserted with the tool bit 4, the inside of tool bit 4 is provided with the ladder through groove 5, the inside of ladder through groove 5 is inserted with the screw rod 6, and the bottom end of screw rod 6 passes through slot 2 and is connected to the inside of thread groove 3 with screwing, the inside of slot 2 is installed with the elastic member 7, and the top of elastic member 7 is in contact with the bottom of tool bit 4.

[0023] In the utility model, connecting post 1 is used as the connecting main body, connecting post 1 bottom end is connected with the machine tool fixture, reamer installation is realized, when needing to replace tool bit 4, screw rod 6 is screwed to separate it from thread groove 3, then screw rod 6 is extracted, then tool bit 4 is pulled out from the inside of slot 2, and after screw rod 6 is loosened, under the thrust of elastic member 7, tool bit 4 exits slot 2 more conveniently and labor-savingly, and the dismounting difficulty is reduced, so that the device has the advantages that the elastic structure is used, the tool bit is pulled out more labor-savingly after being released from fixing, the dismounting operation danger is reduced, and the device is easier to operate.

[0024] Please refer to Figure 3 Among them: elastic member 7 includes spring 71 and contact ring 72, the bottom end of spring 71 is fixedly connected to the inside of slot 2, the top end of spring 71 is fixedly connected with contact ring 72, and the top of contact ring 72 is in contact with the bottom of tool bit 4.

[0025] In the utility model, spring 71 keeps the thrust of contact ring 72, tool bit 4 keeps the pressure of contact ring 72 during installation, after screw rod 6 is dismounted, tool bit 4 is pushed outwards by the thrust of spring 71, so that it is more convenient and labor-saving to dismount.

[0026] Please refer to Figure 3 Among them: the inside of slot 2 is fixedly connected with guide ring 21, the inside of guide ring 21 is communicated with thread groove 3, guide ring 21 is sleeved on the outside of screw rod 6, and guide ring 21 is located on the inside of spring 71.

[0027] In the utility model, when screw rod 6 is inserted downwards, guide ring 21 makes it more accurate, and spring 71 is isolated at the same time, so that interference during installation is avoided.

[0028] Please refer to Figure 1 With Figure 2 Among them: the outside of the top of connecting post 1 is provided with taper face 8, the inside of connecting post 1 is provided with annular distribution vertical channel 9, and the top of vertical channel 9 extends to the outside of taper face 8.

[0029] The taper surface 8 and the vertical channel 9 cooperate, so that the reamer is convenient to spray lubricating cooling oil liquid for the needle-shaped head 4 when running, and the structure is more convenient.

[0030] Please refer to Figure 2 The outer side of the screw cap 61 is slid to the inside of the stepped through groove 5, and the inside of the screw cap 61 is provided with an internal hexagonal groove 62.

[0031] In the utility model, the internal hexagonal groove 62 on the screw cap 61 is convenient to insert a hexagonal wrench, and operation is carried out.

[0032] Please refer to Figure 1 The outside of the bottom end of the connecting column 1 is provided with four square surfaces 10.

[0033] In the utility model, the four square surfaces 10 form square blocks, so that the connecting column 1 and the machine tool fixture are convenient and stable to connect and clamp.

[0034] The above is only a preferred specific embodiment of the utility model; however, the protection scope of the utility model is not limited to this. Any person skilled in the art in the technical field according to the technical scheme and the improvement concept of the utility model within the technical range disclosed by the utility model, equivalent replacement or change is covered in the protection scope of the utility model.

Claims

1. A reamer with easily replaceable cutting blades, comprising a connecting post (1), characterized in that: The connecting column (1) has a slot (2) inside, the slot (2) has a threaded groove (3) inside, a cutter head (4) is inserted into the slot (2), the cutter head (4) has a stepped through groove (5) inside, a screw (6) is inserted into the stepped through groove (5), the bottom end of the screw (6) passes through the slot (2) and is threaded into the inside of the threaded groove (3), and an elastic element (7) is installed inside the slot (2), the top of the elastic element (7) is in contact with the bottom of the cutter head (4).

2. A reamer with easily replaceable cutting blades according to claim 1, characterized in that: The elastic element (7) includes a spring (71) and a contact ring (72). The bottom end of the spring (71) is fixedly connected to the inside of the slot (2), and the top end of the spring (71) is fixedly connected to the contact ring (72). The top end of the contact ring (72) is in contact with the bottom of the cutter head (4).

3. A reamer with easily replaceable cutting blades according to claim 2, characterized in that: A guide ring (21) is fixedly connected inside the slot (2). The inside of the guide ring (21) is connected to the threaded groove (3). The guide ring (21) is sleeved on the outside of the screw (6). The guide ring (21) is located inside the spring (71).

4. A reamer with easily replaceable cutting blades according to claim 1, characterized in that: A tapered surface (8) is provided on the outer side of the top of the connecting column (1), and a ring-shaped vertical channel (9) is provided inside the connecting column (1), with the top of the vertical channel (9) extending to the outer side of the tapered surface (8).

5. A reamer with easily replaceable cutting blades according to claim 1, characterized in that: The top end of the screw (6) is fixedly connected to a nut (61), the outer side of the nut (61) slides into the interior of the stepped through groove (5), and the interior of the nut (61) is provided with an internal hexagonal groove (62).

6. A reamer with easily replaceable cutting blades according to claim 1, characterized in that: The bottom of the connecting column (1) has four square faces (10) on the outer side.

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