Die-cast aluminum alloy drill and spot face in one tool

Abstract

The utility model belongs to the technical field of machining tool, concretely relates to a die casting aluminum alloy drilling and counterboring integrated cutter, including drill pin portion, counterbore portion and handle, the top fixed mounting counterbore portion of handle, the top fixed mounting drill pin portion of counterbore portion, the drill pin portion is drilling tool, the drilling tool is inserted and is fixed on counterbore cutter body, the counterbore portion includes counterbore cutter body, the blade of first counterbore cutter and the blade of second counterbore cutter, the counterbore cutter body is connected as an organic whole with the blade of first counterbore cutter, the blade of second counterbore cutter through the burn welding. The utility model uses, through drilling and counterboring function integration in the same cutter, avoids the multiple tool changing and parameter adjustment process in traditional craft, reduces more than 50% processing time, simultaneously need not to be equipped with multiple independent cutters, reduces cutter purchase cost and the maintenance loss of machine tool because of frequent tool changing.

Description

Technical Field

[0001] This utility model belongs to the field of machining tool technology, specifically, it relates to an integrated die-cast aluminum alloy drilling and countersinking tool. Background Technology

[0002] In the field of machining, drilling and countersinking of die-cast aluminum alloy parts are key processes. Traditional processes require two steps using different tools. This process not only leads to low machining efficiency due to multiple tool changes, but also causes cumulative errors due to repeated tool settings, affecting the perpendicularity accuracy of the hole and the countersink. At the same time, the use of multiple sets of tools and frequent tool changes further increases tool costs and machine tool maintenance costs.

[0003] While existing composite cutting tools attempt to solve the problem of step-by-step machining through integrated design, they generally suffer from structural defects: the assembly structure leads to insufficient coaxiality between the drilling and countersinking components, easily causing chatter marks or flatness deviations during machining; the chip removal channel design is unreasonable, making it difficult to meet the need for removing sticky chips in aluminum alloy machining, easily causing tool wear; in addition, the integral structure makes rework and adjustment difficult, requiring complete disassembly or even tool replacement when accuracy deviations occur, seriously affecting production continuity. These problems make it difficult for traditional processes and existing composite cutting tools to meet the demands of high-precision, high-efficiency modern machining. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of this utility model is to provide a solution.

[0005] According to the present invention, a die-cast aluminum alloy drilling and countersinking integrated cutting tool includes a drilling pin, a countersinking pin, and a tool holder. The countersinking pin is fixedly installed on the top of the tool holder, and the drilling pin is fixedly installed on the top of the countersinking pin. The drilling pin is a drilling tool, which is inserted and fixed on the countersinking tool body. The countersinking pin includes the countersinking tool body, a first countersinking tool blade, and a second countersinking tool blade. The countersinking tool body is integrally connected to the first countersinking tool blade and the second countersinking tool blade by welding.

[0006] In a preferred embodiment: the cutting edge of the drilling tool is made of cemented carbide, and the bottom axial positioning surface of the drilling tool fits into the mounting hole opened on the top of the countersinking tool body.

[0007] In a preferred embodiment: the countersinking tool body and the tool holder are interference-fitted, and the countersinking tool body and the tool holder are fixedly connected.

[0008] In a preferred embodiment: the blades of the first countersink and the blades of the second countersink are symmetrically distributed around the circumference of the countersink body.

[0009] In a preferred embodiment: the welded connection between the blade of the first countersink and the body of the countersink, and the welded connection between the blade of the second countersink and the body of the countersink, both form continuous cutting edges.

[0010] In a preferred embodiment: the countersunk tool body is provided with an internal cooling channel, the inlet end of the internal cooling channel is connected to the cooling medium interface of the tool holder, and the outlet end of the internal cooling channel faces the cutting areas of the blades of the first countersunk tool and the blades of the second countersunk tool.

[0011] In a preferred embodiment: the outlet direction of the internal cooling channel forms an angle of 30°-60° with the cutting edges of the blades of the first and second countersinking tools.

[0012] In a preferred embodiment: the cutting edges of the blades of the first countersink and the second countersink are coated.

[0013] In a preferred embodiment: the countersinking tool body has two screw holes that are perpendicularly connected to the mounting holes of the drilling tool. A first locking screw and a second locking screw are respectively provided in the two screw holes. The countersinking tool body is axially locked and fixed to the drilling tool by the first and second locking screws.

[0014] In a preferred embodiment: the tail of the tool holder 4 is provided with a positioning boss for positioning the machine tool spindle.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When using this utility model, the drilling and countersinking functions are integrated into the same tool, avoiding the process of multiple tool changes and parameter adjustments in traditional processes, reducing processing time by more than 50%, and eliminating the need for multiple sets of independent tools, thus reducing tool procurement costs and maintenance losses caused by frequent tool changes on the machine tool.

[0017] 2. When this utility model is used, it adopts a rigid integral structure with welded fixed blade and a two-way locking design for drilling tools, which solves the problem of insufficient coaxiality of existing composite tool assembly structures, ensures the perpendicularity accuracy of the hole and the countersink, and optimizes the efficiency of sticky chip removal through the internal cooling chip removal channel, reduces tool wear and machining defects, and improves production continuity. Attached Figure Description

[0018] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is an exploded view of the present invention;

[0021] In the picture:

[0022] Detailed Implementation

[0023] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0024] like Figure 1-2 As shown, this utility model discloses an integrated die-cast aluminum alloy drilling and countersinking tool, including a drill pin, a countersink, and a tool holder 4. The drill pin is a drilling tool 5, the cutting edge of which is made of cemented carbide. The bottom axial positioning surface of the drilling tool 5 fits into the mounting hole on the top of the countersinking tool body 1. The drilling tool 5 is inserted and fixed on the countersinking tool body 1. The countersink includes the countersinking tool body 1, the first countersinking tool insert 2, and the second countersinking tool insert 3. The countersinking tool body 1 and the tool holder 4 are connected... The countersunk tool body 1 is fixedly connected to the tool holder 4 via an interference fit. The countersunk tool body 1 is welded to the first countersunk tool blade 2 and the second countersunk tool blade 3. The first and second countersunk tool blades 2 and 3 are symmetrically distributed around the circumference of the countersunk tool body 1. The welded connections between the first and second countersunk tool blades 2 and the countersunk tool body 1, and between the second and third countersunk tool blades 3 and the countersunk tool body 1, both form continuous cutting edges. The body 1 has an internal cooling channel. The inlet of the internal cooling channel is connected to the cooling medium interface of the tool holder 4. The outlet of the internal cooling channel faces the cutting area of ​​the first countersunk tool insert 2 and the second countersunk tool insert 3. The outlet direction of the internal cooling channel forms an angle of 30°-60° with the cutting edges of the first countersunk tool insert 2 and the second countersunk tool insert 3 to achieve directional flushing of chips. The cutting edge surfaces of the first countersunk tool insert 2 and the second countersunk tool insert 3 are coated. The countersunk tool body 1 has an opening... Two screw holes are provided, which are perpendicularly connected to the mounting holes of the drilling tool 5. A first locking screw 6 and a second locking screw 7 are respectively provided in the two screw holes. The first locking screw 6 and the second locking screw 7 apply a locking force to the drilling tool 5 from the screw holes, thereby completing the axial fixation of the drilling tool 5 on the countersinking tool body 1. The tail of the tool holder 4 is provided with a positioning boss for positioning the machine tool spindle to ensure the circumferential positioning accuracy during tool installation. The countersinking pin is fixedly installed on the top of the tool holder 4, and the drilling pin is fixedly installed on the top of the countersinking pin.

[0025] Working principle

[0026] In use, the tool holder 4 is installed on the machine tool spindle to transmit rotational power. The drilling tool 5 is fixed in both directions to the countersinking tool body 1 by the first locking screw 6 and the second locking screw 7. The drilling is completed first by feeding with the spindle. After drilling, the countersinking tool body 1 drives the blades 2 and 3 of the first and second countersinking tools, which are welded and fixed, to countersink the hole. During the processing, the internal cooling channel introduces cutting fluid through the tool holder 4 to flush the cutting area of ​​the blades and remove chips, so as to achieve drilling and countersinking in one step, avoiding tool change errors and efficiency loss.

[0027] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A die-cast aluminum alloy drilling and countersinking tool with an integrated face, characterized in that, It includes a drill pin, a countersink pin, and a tool holder (4). The countersink pin is fixedly installed on the top of the tool holder (4), and the drill pin is fixedly installed on the top of the countersink pin. The drill pin is a drilling tool (5). The drilling tool (5) is inserted and fixed on the countersink tool body (1). The countersink pin includes the countersink tool body (1), the first countersink tool blade (2), and the second countersink tool blade (3). The countersink tool body (1) is connected to the first countersink tool blade (2) and the second countersink tool blade (3) by welding.

2. The die-cast aluminum alloy drilling and countersinking integrated tool according to claim 1, characterized in that, The cutting edge of the drilling tool (5) is made of cemented carbide, and the bottom axial positioning surface of the drilling tool (5) fits into the mounting hole opened on the top of the countersinking tool body (1).

3. The die-cast aluminum alloy drilling and countersinking integrated tool according to claim 2, characterized in that, The countersinking tool body (1) and the tool holder (4) are interference-fitted, and the countersinking tool body (1) and the tool holder (4) are fixedly connected.

4. The die-cast aluminum alloy drilling and countersinking integrated tool according to claim 1, characterized in that, The blades (2) of the first countersink and the blades (3) of the second countersink are symmetrically distributed around the body (1) of the countersink.

5. The die-cast aluminum alloy drilling and countersinking integrated tool according to claim 4, characterized in that, The welded connection between the blade (2) of the first countersink and the body (1) of the countersink, and the welded connection between the blade (3) of the second countersink and the body (1) of the countersink, both form continuous cutting edges.

6. The die-cast aluminum alloy drilling and countersinking integrated tool according to claim 5, characterized in that, The countersunk tool body (1) is provided with an internal cooling channel. The inlet end of the internal cooling channel is connected to the cooling medium interface of the tool holder (4), and the outlet end of the internal cooling channel faces the cutting area of ​​the blade (2) of the first countersunk tool and the blade (3) of the second countersunk tool.

7. The die-cast aluminum alloy drilling and countersinking integrated tool according to claim 6, characterized in that, The outlet direction of the internal cooling channel forms an angle of (30)°-(60)° with the cutting edges of the blades (2) of the first countersink and (3) of the second countersink.

8. The die-cast aluminum alloy drilling and countersinking integrated tool according to claim 7, characterized in that, The cutting edges of the blades (2) of the first countersunk cutter and the blades (3) of the second countersunk cutter are coated.

9. The die-cast aluminum alloy drilling and countersinking integrated tool according to claim 1, characterized in that, The countersinking tool body (1) has two screw holes that are perpendicularly connected to the mounting holes of the drilling tool (5). The two screw holes are respectively provided with a first locking screw (6) and a second locking screw (7). The countersinking tool body (1) is axially locked and fixed to the drilling tool (5) by the first screw (6) and the second locking screw (7).

10. The die-cast aluminum alloy drilling and countersinking integrated tool according to claim 1, characterized in that, The tail of the tool holder (4) is provided with a positioning boss for positioning the machine tool spindle.

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