Disposable reamer

Abstract

The utility model relates to the technical field of reamers, and provides a disposable reamer which comprises a reamer body, a blade and a fastening screw, one end of the reamer body is a reamer head, the other end of the reamer body is a reamer handle, a plurality of mounting parts are arranged on the reamer head at equal arc distances, and a chip groove is formed between every two adjacent mounting parts. The blade is installed on one side face of the installation portion through the fastening screw, and an inner cooling hole is formed in the cutter handle and communicated with each chip groove. The blades are fixed through the fastening screws, so that the blades are detachable, when one blade is broken, only the blade needs to be replaced, and the scrap cost is reduced; meanwhile, different blades can be replaced, and different machining requirements are met.

Description

Technical Field

[0001] The present application belongs to the technical field of reamer, and more specifically, to a disposable reamer. Background Art

[0002] A reamer is a rotary tool with one or more teeth used to remove a thin layer of metal from the surface of a processed hole. Reamers are used to ream holes that have been drilled (or expanded) on workpieces, mainly to improve the machining accuracy of the holes and reduce the roughness of their surfaces. They are tools used for finishing and semi-finishing of holes, and the machining allowance is generally very small.

[0003] The prior art reamer is an integrated structure, in which the blade and the handle are processed in one piece. Thus, when the blade breaks, the entire reamer can only be scrapped, resulting in excessively high loss costs. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, an object of the embodiments of the present application is to provide a disposable reamer whose blade can be replaced to reduce the scrapping cost.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a disposable reamer, including: a tool body, a blade and a fastening screw, one end of the tool body is a tool head, and the other end is a tool handle, a plurality of mounting parts are provided on the tool head at equal arc distances, a chip groove is provided between two adjacent mounting parts, a blade is installed on one side of the mounting part through the fastening screw, an internal cooling hole is provided in the tool handle, and the internal cooling hole is connected to each of the chip grooves.

[0006] In one embodiment, three mounting parts are provided, each mounting part has a first side surface and a second side surface, the first side surface of one mounting part is perpendicular to the second side surface of another mounting part and forms the chip groove; the blade is fixed on the first side surface.

[0007] In one embodiment, a depression is provided on the first side surface, the blade is a prismatic blade, the angle between the two side walls of the depression is an obtuse angle, and the two side walls of the depression fit with the two side surfaces of the blade having an obtuse angle.

[0008] In one embodiment, a threaded countersunk hole is provided at the center of the blade, and a threaded through hole is provided on the countersunk platform.

[0009] In one embodiment, a groove perpendicular to the sinking platform is provided at the connection between the two side walls of the sinking platform.

[0010] In one embodiment, the height of the sink is the same as the thickness of the blade.

[0011] In one embodiment, the inner cooling hole includes a main cooling hole arranged in the tool holder, and sub-cooling holes respectively connected to each of the chip removal grooves, and a plurality of the sub-cooling holes are connected to the main cooling hole inside the tool holder.

[0012] The beneficial effect of the disposable reamer provided by the present application is that the blades are fixed by fastening screws, so that the blades are removable. When one of the blades is chipped, only the blade needs to be replaced, thereby reducing the scrapping cost; different blades can be replaced at the same time to achieve different processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 A schematic diagram of the exploded structure of a disposable reamer provided in an embodiment of the present application;

[0015] Figure 2 A schematic diagram of the structure of a cutter head in a disposable reamer provided in an embodiment of the present application;

[0016] Figure 3 A schematic diagram of the structure of a blade and a fastening screw in a disposable reamer provided in an embodiment of the present application;

[0017] Figure 4 A schematic diagram of the right side structure of a cutter body in a disposable reamer provided in an embodiment of the present application;

[0018] Figure 5 This is a schematic diagram of the left side structure of the blade body of the disposable reamer provided in an embodiment of the present application.

[0019] Among them, the reference numerals in the figure are:

[0020] 1. Cutter body; 11. Cutter head; 111. Mounting portion; 1111. First side surface; 1112. Second side surface; 1113. Countersunk platform; 1114. Threaded through hole; 12. Cutter handle; 13. Chip groove; 2. Blade; 21. Threaded countersunk hole; 3. Fastening screw; 4. Internal cooling hole; 41. Main cooling hole; 42. Sub-cooling hole; 5. Groove. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] like Figure 1-Figure 5 As shown, a disposable reamer provided in an embodiment of the present application is now described. The disposable reamer comprises a tool body 1, a blade 2 and a fastening screw 3. Among them, one end of the tool body 1 is a tool head 11, and the other end is a tool handle 12, or it can be understood that the tool head 11 is arranged on the tool handle 12, and a plurality of mounting portions 111 are arranged at equal arc distances on the tool head 11, and a chip groove 13 is arranged between two adjacent mounting portions 111. A blade 2 is installed on one side of the mounting portion 111 by a fastening screw 3, and the blade 2 is replaceable, with low scrapping cost and suitable for replacement of blades 2 with different cutting requirements. An internal cooling hole 4 is arranged in the tool handle 12, and the internal cooling hole 4 is connected to each chip groove 13. Specifically, three mounting parts 111 are provided, and the mounting parts 111 are block structures. Each mounting part 111 has a first side surface 1111 and a second side surface 1112. The first side surface 1111 of one mounting part 111 is perpendicular to the second side surface 1112 of another mounting part 111 and forms a chip groove 13, so that the chip groove 13 is large and the slag removal ability is strong; the blade 2 is fixed on the first side surface 1111 by a fastening screw 3.

[0026] Specifically, a sink 1113 is provided on the first side surface 1111, and the bottom surface of the sink 1113 is formed in the same shape as the blade 2, but the size is slightly smaller than the size of the blade 2, and the edge of the blade 2 is protruded to play a cutting role, and the cutting margin is large. In this embodiment, the blade 2 is a prismatic blade 2, and the angle between the two side walls of the sink 1113 is an obtuse angle. The two side walls of the sink 1113 fit with the two side surfaces of the blade 2 with an obtuse angle, so that the blade 2 has a limiting effect after being installed on the sink 1113 to prevent the blade 2 from rotating. Specifically, a threaded countersunk hole 21 is provided in the center of the blade 2, and a threaded through hole 1114 is provided on the sink 1113. The fastening screw 3 fixes the blade 2 on the sink 1113 through the threaded countersunk hole 21 and the threaded through hole 1114. The threaded countersunk hole 21 can accommodate the nut of the fastening screw 3 to keep the surface of the blade 2 flat.

[0027] In this embodiment, a groove 5 perpendicular to the sinking platform 1113 is provided at the connection between the two side walls of the sinking platform 1113 . The cross section of the groove 5 is arc-shaped, and the groove 5 serves to avoid air when assembling the blade 2 .

[0028] In this embodiment, the height of the sink 1113 is the same as the thickness of the blade 2, which makes it easier for the chips after cutting to enter the inner cooling hole 4 for discharge.

[0029] like Figure 4 and 5 As shown, the inner cooling hole 4 includes a main cooling hole 41 arranged in the tool handle 12, and sub-cooling holes 42 respectively connected to each chip groove 13. Three sub-cooling holes 42 are arranged, and multiple sub-cooling holes 42 are connected to the main cooling hole 41 inside the tool handle 12.

[0030] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A disposable reamer, characterized in that: include: A tool body (1), a blade (2) and a fastening screw (3); one end of the tool body (1) is a tool head (11), and the other end is a tool handle (12); a plurality of mounting portions (111) are provided on the tool head (11) at equal arc distances; a chip removal groove (13) is provided between two adjacent mounting portions (111); a blade (2) is mounted on one side of the mounting portion (111) via the fastening screw (3); an internal cooling hole (4) is provided in the tool handle (12); the internal cooling hole (4) is connected to each of the chip removal grooves (13).

2. The disposable reamer according to claim 1, characterized in that: There are three mounting parts (111), each mounting part (111) has a first side surface (1111) and a second side surface (1112), the first side surface (1111) of one mounting part (111) is perpendicular to the second side surface (1112) of another mounting part (111) and forms the chip removal groove (13); the blade (2) is fixed on the first side surface (1111).

3. The disposable reamer according to claim 2, characterized in that: A depression (1113) is provided on the first side surface (1111); the blade (2) is a prismatic blade (2); the angle between two side walls of the depression (1113) is an obtuse angle; the two side walls of the depression (1113) fit with two side surfaces of the blade (2) having an obtuse angle.

4. The disposable reamer according to claim 3, characterized in that: A threaded countersunk hole (21) is provided at the center of the blade (2), and a threaded through hole (1114) is provided on the countersunk platform (1113).

5. The disposable reamer according to claim 4, characterized in that: A groove (5) perpendicular to the sinking platform (1113) is provided at the connection between the two side walls of the sinking platform (1113).

6. The disposable reamer according to claim 5, characterized in that: The height of the sink (1113) is the same as the thickness of the blade (2).

7. The disposable reamer according to claim 5, characterized in that: The inner cooling hole (4) comprises a main cooling hole (41) arranged in the tool handle (12), and a sub-cooling hole (42) respectively connected to each of the chip removal grooves (13); a plurality of the sub-cooling holes (42) are connected to the main cooling hole (41) inside the tool handle (12).

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