High-precision drill bit adapter hexagonal handle device

Abstract

The utility model discloses a high-precision device for switching a drill bit to a hexagonal handle. The high-precision device comprises the drill bit and the hexagonal handle, an inserting part is arranged at the tail end of the drill bit, the contact part of the tail end of the drill bit and the inserting part is a conical surface, the section of the inserting part is quadrilateral, and the edge of one end of the inserting part is a conical surface; an inserting hole is formed in one end of the hexagonal handle, the inserting hole is composed of conical holes at the head end and the tail end and a quadrilateral hole in the middle, and a through fixing hole is formed in the side wall of the inserting hole; the head end and the tail end of the inserting part are arranged to be the conical surfaces, the middle of the inserting part is arranged to be the shape body with the quadrilateral section and is matched with the inserting hole of the hexagonal handle, the conical surfaces of the inserting part are matched with the conical holes of the inserting hole, and the coaxiality of the drill bit and the hexagonal handle is corrected through the conical holes in the two positions. The shape body with the quadrilateral section of the inserting part is matched with the quadrilateral hole in the middle of the inserting hole to prevent the inserting part and the inserting hole from slipping in the matching process, the inserting part and the inserting hole are connected through the adhesive in the fixing hole, the adhesive is heated and melted to separate the inserting part and the inserting hole, and therefore the punching device has the advantages of being convenient to disassemble and assemble and high in punching precision.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill bits, and specifically relates to a high-precision drill bit adapter hexagon shank device. Background Technique

[0002] In order to prevent the clamping device of the drilling equipment from slipping when cooperating with the drill bit, a hexagon shank is usually installed at the tail end of the drill bit. The hexagonal shape of the hexagon shank is convenient for the jaw to grip. However, there will be a gap between the drill bit and the hexagon shank. If the gap is too large, the drill bit is likely to deviate when drilling, resulting in low hole precision. And if the drill bit and the hexagon shank are too tightly fitted, it is very difficult to separate the two, which is inconvenient for replacing the drill bit. If the two are too loosely fitted, the drill bit is likely to fall off when drilling. To solve this problem, a high-precision drill bit adapter hexagon shank device is provided. Content of the Utility Model

[0003] In view of this, the technical problem to be solved by the utility model is to provide a high-precision drill bit adapter hexagon shank device, which solves the problems of detachment and too low drilling precision in the prior art when the drill bit and the hexagon shank are matched.

[0004] To solve the above technical problem, the utility model discloses a high-precision drill bit adapter hexagon shank device, including: a drill bit and a hexagon shank; a plug-in portion is provided at the tail end of the drill bit, and the contact surface between the tail end of the drill bit and the plug-in portion is a conical surface. The cross-section of the plug-in portion is quadrilateral, two of the opposite surfaces are flat straight surfaces, and the other two opposite surfaces are arc surfaces. The edge of one end of the plug-in portion is a conical surface; a plug-in hole is provided at one end of the hexagon shank. The plug-in hole is composed of a conical hole at the head and tail ends and a quadrilateral hole in the middle. A through fixing hole is provided on the side wall of the plug-in hole. The plug-in portion of the drill bit is inserted into the plug-in hole of the hexagon shank, and an adhesive is added to the fixing hole to connect the two.

[0005] Further, there are two groups of fixing holes on the hexagon shank that are spaced 180°, and each group has two fixing holes.

[0006] Compared with the prior art, the present application can obtain the following technical effects:

[0007] The utility model sets the head and tail ends of the plug-in portion to be conical surfaces, and the middle part of the plug-in portion is set into a shape with a quadrilateral cross-section, which is matched with the plug-in hole of the hexagon shank. The conical surface of the plug-in portion is matched with the conical hole of the plug-in hole. The coaxiality of the drill bit and the hexagon shank is corrected through the two conical holes. The shape body with a quadrilateral cross-section of the plug-in portion is matched with the quadrilateral hole in the middle of the plug-in hole to prevent slipping during the cooperation of the two. The two are connected by the adhesive in the fixing hole, and the two can be separated by heating and melting the adhesive, so as to have the performance of convenient disassembly and high drilling precision.

[0008] Of course, it is not necessary for any product implementing the present application to achieve all the above-mentioned technical effects at the same time. Brief Description of the Drawings

[0009] The drawings described herein are provided to further understand the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0010] Figure 1 is a schematic diagram of the cooperation between a drill bit and a hexagonal shank according to an embodiment of the present utility model;

[0011] Figure 2 is a schematic diagram of a drill bit according to an embodiment of the present utility model;

[0012] Figure 3 is a cross-sectional schematic diagram of the cooperation between a drill bit and a hexagonal shank according to an embodiment of the present utility model.

[0013] Reference Numerals in the Drawings

[0014] Drill bit 1, hexagonal shank 2, insertion part 3, conical surface 4, flat straight surface 5, arc surface 6, insertion hole 7, conical hole 8, quadrilateral hole 9, fixing hole 10. Detailed Embodiment

[0015] The following will describe in detail the embodiments of the present application in conjunction with the drawings and embodiments, so as to fully understand how the present application uses technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0016] Please refer to Figures 1 to 3 , Figure 1 is a schematic diagram of the cooperation between a drill bit and a hexagonal shank according to an embodiment of the present utility model; Figure 2 is a schematic diagram of a drill bit according to an embodiment of the present utility model; Figure 3 is a cross-sectional schematic diagram of the cooperation between a drill bit and a hexagonal shank according to an embodiment of the present utility model.

[0017] A high-precision drill bit adapter for a hexagonal shank device includes: a drill bit 1 and a hexagonal shank 2; the tail end of the drill bit 1 is provided with an insertion part 3, the contact part between the tail end of the drill bit 1 and the insertion part 3 is a conical surface 4, the cross-section of the insertion part 3 is quadrilateral, two opposite surfaces thereof are flat straight surfaces 5, and the other two opposite surfaces are arc surfaces 6, and the edge of one end of the insertion part 3 is a conical surface 4; one end of the hexagonal shank 2 is provided with an insertion hole 7, the insertion hole 7 is composed of a conical hole 8 at the head and tail ends and a quadrilateral hole 9 in the middle, a through fixing hole 10 is provided on the side wall of the insertion hole 7, the insertion part 3 of the drill bit 1 is inserted into the insertion hole 7 of the hexagonal shank 2, and an adhesive is added to the fixing hole 10 to connect the two; there are two groups of fixing holes 10 on the hexagonal shank 2 with an interval of 180°, and each group has two fixing holes 10.

[0018] In the present utility model, the head and tail ends of the insertion part 3 are provided with conical surfaces 4, and the middle part of the insertion part 3 is set into a shape with a quadrilateral cross-section, which is matched with the insertion hole 7 of the hexagonal shank 2. The conical surface 4 of the insertion part 3 is matched with the conical hole 8 of the insertion hole 7. The coaxiality of the drill bit 1 and the hexagonal shank 2 is corrected by the two conical holes 8. The shape with a quadrilateral cross-section of the insertion part 3 is matched with the quadrilateral hole 9 in the middle of the insertion hole 7 to prevent slipping during the cooperation of the two. The two are connected by the adhesive in the fixing hole 10, and the two can be disengaged by heating and melting the adhesive, so that it has the performance of convenient disassembly and high drilling accuracy.

[0019] The above description shows and describes several preferred embodiments of the present utility model. However, as mentioned above, it should be understood that the present utility model is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the techniques or knowledge in related fields. And the changes and modifications made by those skilled in the art that do not depart from the spirit and scope of the present utility model should all be within the protection scope of the appended claims of the present utility model.

Claims

1. A high-precision drill bit adapter hexagon shank device, comprising: Drill bit and hexagonal shank; It is characterized in that a plug-in part is provided at the tail end of the drill bit. The contact part between the tail end of the drill bit and the plug-in part is a conical surface. The cross-section of the plug-in part is quadrilateral, with two opposite surfaces being flat straight surfaces and the other two opposite surfaces being arc surfaces. The edge at one end of the plug-in part is a conical surface. One end of the hexagonal shank is provided with a plug-in hole, which is composed of a conical hole at the head and tail ends and a quadrilateral hole in the middle. Through holes for fixing are provided on the side wall of the plug-in hole. The plug-in part of the drill bit is inserted into the plug-in hole of the hexagonal shank, and an adhesive is added into the fixing holes to connect the two.

2. The high-precision drill bit adapter hexagon shank device according to claim 1, wherein, Two groups of fixing holes spaced 180° apart are provided on the hexagonal shank, and each group has two fixing holes.

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