Reamer capable of preventing chip accumulation

Abstract

The reamer comprises a reamer handle, the bottom end of the reamer handle is fixedly connected with a connector, the lower portion of the connector is connected with a connecting sleeve, a reamer rod is installed below the connecting sleeve, a cavity is formed in the middle of the interior of the reamer rod in a penetrating mode, and reaming blades are evenly fixed to the outer wall of the reamer rod. Air is supplied to the reamer through the connecting sleeve so as to blow away cuttings, the connecting sleeve is connected to the air supply pipeline through the connecting pipe, airflow enters the three-flow channel through the connecting pipe, is conveyed to the through hole through the lower end of the three-flow channel and enters the inner cavity of the cutter bar, and the airflow can be sent out from the end of the reamer through the taper hole so as to blow away the cuttings left on a to-be-machined object. And the chips can be directly sent out from the reamer blade through the through groove to blow away the chips on the periphery of the reamer, so that the problems of low machining efficiency, reamer damage and the like caused by excessive chips during deep hole machining are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of reamers, in particular to a reamer which prevents chip accumulation. Background Art

[0002] A reamer has one or more teeth and is a rotating tool used to remove a thin metal layer from the machined surface of a hole. The hole processed by the reamer can obtain precise size and shape. Reamers used to process cylindrical holes are more commonly used, and reamers used to process tapered holes are tapered reamers, which are less commonly used. According to the usage, there are hand reamers and machine reamers. Machine reamers can be divided into straight shank reamers and tapered shank reamers, while hand reamers are straight shank.

[0003] Existing tapered reamers have a relatively average chip cleaning effect. Due to the special limitations of the tapered hole shape, the chips generated by the tapered reamer when machining the tapered hole are very easy to accumulate in the hole, especially in deep holes. The chips are prone to accumulate more. If they cannot be discharged in time, it will have a very adverse effect on the action of the reamer, which will not only affect the fineness of the machined surface, but also cause the reamer to break.

[0004] Therefore, those skilled in the art provide a reamer with anti-chip accumulation to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to provide a reamer that prevents chip accumulation, so as to solve the problem in the above background technology that the existing tapered reamer has a relatively mediocre chip cleaning effect.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A chip accumulation-proof reamer comprises: a shank, a connecting head fixedly connected to the bottom end of the shank, and a connecting sleeve connected to the bottom of the connecting head, matching grooves are provided on the inner sides of the upper and lower ends of the connecting sleeve, connecting pipes are fixedly extended from the left and right sides of the connecting sleeve, and a three-way flow channel is provided through the interior of the connecting sleeve, a tool rod is installed below the connecting sleeve, a cavity is provided through the middle part of the interior of the tool rod, and a through hole is provided above the cavity and above the interior of the tool rod, a tapered hole is provided below the cavity and below the interior of the tool rod, reaming blades are evenly fixed on the outer wall of the tool rod, and through grooves are provided through the interior above the reaming blades.

[0008] As a solution in the present invention, a connecting block is fixedly connected to the bottom end of the connecting head, and the connecting block is rotatably engaged with the inner top of the connecting sleeve through a matching groove.

[0009] As a solution in the present invention, the top end of the knife rod is fixedly connected with a knife rod clamping block, and the knife rod clamping block is rotatably engaged with the inner bottom of the connecting sleeve through the engaging groove.

[0010] As a solution in the present invention, the left and right ends of the three-way flow channel are respectively connected to the connecting pipe, and the lower end of the three-way flow channel is connected to the through hole.

[0011] As a solution in the present invention, the through hole and the tapered hole are connected via a cavity, and the cavity and the through groove are both connected.

[0012] As a solution of the present invention, air holes are respectively provided at equal distances through both side walls of the reamer blade, and the air holes are connected to the through groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. Use the connecting sleeve to supply air to the reamer to blow away the chips. The connecting sleeve is connected to the air supply duct through the connecting pipe. The air flow enters the three-flow channel through the connecting pipe, is transported to the through hole through the lower end of the three-flow channel, and enters the inner cavity of the tool bar. The air flow can be sent out from the end of the reamer through the tapered hole to blow away the chips left on the object to be processed, to prevent the chips from damaging the end of the reamer when the knife is lowered or retracted. It can also be sent directly from the reamer blade through the through groove to blow away the chips around the outside of the reamer, to prevent excessive chips from causing low processing efficiency and damage to the reamer when processing deep holes.

[0015] 2. In addition to the through groove, there are air holes on the reamer blade. The air holes can guide the air flow to the space between two adjacent reamer blades to blow away the chips accumulated between the two reamer blades. All the chips around the reamer can be blown away, which greatly protects the reamer and ensures the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic diagram of the structure of a reamer that prevents chip accumulation.

[0017] Figure 2 A schematic diagram of the half-section structure of a reamer that prevents chip accumulation.

[0018] Figure 3 A reamer that prevents chip accumulation Figure 2 Enlarged structural diagram at point A in the middle.

[0019] Figure 4 The figure is a schematic diagram of the connection structure of a connecting sleeve in a reamer that prevents chip accumulation.

[0020] Figure 5 This is a schematic diagram of the connection structure between the reamer blade and the tool holder in a chip accumulation-resistant reamer from the first perspective.

[0021] Figure 6 This is a schematic diagram of the connection structure between the reamer blade and the tool rod in a chip-preventing reamer from a second perspective.

[0022] In the figure: 1. Tool handle; 2. Connector; 3. Connecting block; 4. Connecting sleeve; 5. Matching groove; 6. Connecting pipe; 7. Three-way flow channel; 8. Tool rod; 9. Tool rod block; 10. Cavity; 11. Through hole; 12. Conical hole; 13. Reamer; 14. Through groove; 15. Air hole. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figures 1 to 6 The embodiment of the utility model provides a reamer with anti-chip accumulation, comprising: a tool handle 1, a connecting head 2 fixedly connected to the bottom end of the tool handle 1, and a connecting sleeve 4 connected to the bottom of the connecting head 2, matching grooves 5 are provided on the inner sides of the upper and lower ends of the connecting sleeve 4, a connecting block 3 is fixedly connected to the bottom end of the connecting head 2, and the connecting block 3 is rotatably fitted in the upper part of the inner part of the connecting sleeve 4 through the matching groove 5, connecting pipes 6 are fixedly extended from the left and right sides of the connecting sleeve 4, and a three-way flow channel 7 is provided through the interior of the connecting sleeve 4, a tool rod 8 is installed below the connecting sleeve 4, and a tool rod block 9 is fixedly connected to the top of the tool rod 8, and the tool rod block 9 is rotatably fitted in the lower part of the inner part of the connecting sleeve 4 through the matching groove 5;

[0025] Specifically, the connector 2 and the shank 8 are rotatably connected to the connecting sleeve 4 by the cooperation between the connecting block 3 and the matching groove 5, and the cooperation between the shank block 9 and the matching groove 5, respectively. The connecting sleeve 4 is used to supply air to the reamer to blow away the chips. The connecting sleeve 4 does not rotate with the reamer body, so there is no interference. While the reamer rotates normally, the connecting sleeve 4 is normally connected to the air supply duct.

[0026] The left and right ends of the three-way flow channel 7 are respectively connected to the connecting pipe 6, and the lower end of the three-way flow channel 7 is connected to the through hole 11;

[0027] Specifically, the air delivered by the external air supply duct connected to the connecting sleeve 4 passes through the connecting pipes 6 at both ends, passes through the three-way flow channel 7, enters the interior of the cutter bar 8 through the through hole 11, and finally diverges outward along the cutter bar 8, thereby blowing away the chips generated during the reaming process, effectively preventing chip accumulation;

[0028] A cavity 10 is provided through the middle of the interior of the shank 8, and a through hole 11 is provided above the cavity 10 and above the interior of the shank 8, and a tapered hole 12 is provided below the cavity 10 and below the interior of the shank 8. The through hole 11 and the tapered hole 12 are connected through the cavity 10, and the cavity 10 and the through groove 14 are both connected;

[0029] Specifically, the through hole 11, the cavity 10 and the tapered hole 12 penetrate the entire shank 8, and the wind can penetrate the entire shank 8, so that the chips on the surface of the object to be processed can be blown away to a certain extent before the knife is inserted, during the reaming process, or after the knife is withdrawn, effectively preventing the chips from adversely affecting the reamer and protecting the reamer.

[0030] The outer wall of the shank 8 is evenly fixed with a reamer blade 13, and the upper inner part of the reamer blade 13 is penetrated by a through groove 14. The two side walls of the reamer blade 13 are equidistantly penetrated by air holes 15, and the air holes 15 are connected to the through groove 14.

[0031] Specifically, the reamer blades 13 adopt a through-type design, and each reamer blade 13 is provided with a through-type slot 14, so that the airflow can pass through the through-type slot 14 to better blow away the accumulated chips. The air holes 15 can also achieve the air blowing effect in the areas between the reamer blades 13, avoiding the accumulation of chips in the dead corners between the reamer blades 13.

[0032] The working principle of this utility model is:

[0033] The reamer is installed on the tool holder. After it is firmly clamped, the air supply pipeline is connected to the port of the connecting pipe 6, and the air supply pipeline is opened. The air passes through the connecting pipe 6 and enters the three-way flow channel 7, and then enters the cavity 10 inside the tool rod 8 through the through hole 11. In the cavity 10, the air flow has two divergent paths. One is to continue to be transmitted along the tapered hole 12 to the end of the reamer and sent out from the end of the reamer. This can quickly blow away the chips on the object to be processed when the knife is lowered and retracted, thereby protecting the end of the reamer. The other is to diverge directly from the reamer blade 13 through the through groove 14. This can quickly blow away the chips around the reamer when reaming, effectively preventing chip accumulation. At the same time, the reamer blade 13 is also provided with an air hole 15, which can guide a part of the air flow passing through the through groove 14 to between two adjacent reamer blades 13, so as to blow away the chips in the dead corners of the adjacent parts of the reamer blades 13.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chip-removing reamer, characterized in that: include: A knife handle (1), wherein the bottom end of the knife handle (1) is fixedly connected to a connecting head (2), and a connecting sleeve (4) is connected to the bottom of the connecting head (2), and matching grooves (5) are provided on the inner sides of the upper and lower ends of the connecting sleeve (4), and connecting pipes (6) are fixedly extended from the left and right sides of the connecting sleeve (4), and a three-way flow channel (7) is provided through the interior of the connecting sleeve (4), and a knife rod (8) is installed below the connecting sleeve (4), and a cavity (10) is provided through the middle part of the interior of the knife rod (8), and a through hole (11) is provided above the cavity (10) and above the interior of the knife rod (8), and a tapered hole (12) is provided below the cavity (10) and below the interior of the knife rod (8), and a reamer (13) is evenly fixed on the outer wall of the knife rod (8), and a through groove (14) is provided above the interior of the reamer (13).

2. The chip-accumulation-resistant reamer according to claim 1, characterized in that: The bottom end of the connector (2) is fixedly connected to a connecting block (3), and the connecting block (3) is rotatably engaged with the interior of the connecting sleeve (4) through a matching groove (5).

3. The chip-accumulation-resistant reamer according to claim 1, characterized in that: The top end of the knife rod (8) is fixedly connected to a knife rod clamping block (9), and the knife rod clamping block (9) is rotatably engaged with the inner bottom of the connecting sleeve (4) through the engaging groove (5).

4. The chip-accumulation-resistant reamer according to claim 1, characterized in that: The left and right ends of the three-way flow channel (7) are respectively connected to the connecting pipe (6), and the lower end of the three-way flow channel (7) is connected to the through hole (11).

5. The chip-accumulation-resistant reamer according to claim 1, characterized in that: The through hole (11) and the tapered hole (12) are communicated with each other through the cavity (10), and the cavity (10) and the through groove (14) are both communicated with each other.

6. The chip-accumulation-resistant reamer according to claim 1, characterized in that: Air holes (15) are respectively provided at equal distances through both side walls of the reamer blade (13), and the air holes (15) are connected to the through groove (14).

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