Drilling and reaming integrated cutter

Abstract

The utility model belongs to the technical field of mechanical assembly technology, and particularly relates to a drilling and reaming integrated cutter which comprises a drilling and reaming part and a clamping part, the drilling and reaming part comprises a drilling head and a reaming tail connected with the rear end of the drilling head, and the drilling head comprises a drilling blade, a drilling cutter belt and a drilling cutter body. A plurality of drilling blades are arranged at the front end of the drilling and reaming integrated cutter; and the drilling cutter body is rigidly connected with the drilling blade. The drilling cutter belt is formed by extending the drilling cutter body and is in smooth transition with the drilling blade. The reaming tail is annularly arranged at the outer side end of the drilling head in a stepped mode, and the diameter of the reaming tail is larger than that of the drilling head. The clamping part comprises a fixed frame body, two opposite clamping arc-shaped pieces and a rotating handle, and the rotating handle is connected with the clamping arc-shaped pieces so as to drive the clamping arc-shaped pieces to be in sliding connection on the same parallel line in the fixed frame body. The two clamping arc-shaped pieces define a circular ring shape so as to surround and fix the cutter neck. And after the drilling head completes drilling, the tail is reamed, reaming is carried out, and stepped cutting aperture fine trimming is achieved. And the cutter neck is detachably connected with the clamping part, so that worn parts can be quickly replaced, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical assembly technology, and in particular relates to a drilling and reaming integrated tool. Background Technology

[0002] In traditional drilling and reaming combined machining, separate tools are typically used, requiring separate drill bits and reamers for drilling and reaming. This necessitates tool changes between operations, increasing machining time and introducing positioning errors due to repeated clamping. These cumulative errors significantly affect the coaxiality and dimensional accuracy of the hole. Furthermore, existing clamping mechanisms often use fixed chucks, which are ill-suited for clamping stepped tools. During clamping, radial runout can cause tool vibration during the reaming stage, resulting in low stability and substandard hole wall roughness. Tool changes are also cumbersome and lead to high maintenance costs.

[0003] In a patent document with patent number "CN110340413A" titled "A process method for decomposing a spacer bushing with a large-diameter interference fit", a method for milling parts with a milling cutter is mentioned. However, existing clamping structures are mostly designed for single tools and lack the ability to dynamically adapt to stepped tools, requiring frequent tool changes and resulting in significant cumulative errors. Utility Model Content

[0004] The purpose of this utility model is to provide a drilling and reaming integrated tool, which aims to solve the technical problems of frequent tool failure and low stability in the prior art.

[0005] To achieve the above objectives, this utility model provides an integrated drill-reamer tool, including a drill-reamer portion and a clamping portion. The drill-reamer portion includes a drill head and a reamer tail connected to its rear end. The drill head includes a drill cutting edge, a drill cutting band, and a drill body. A plurality of drill cutting edges are disposed at the front end of the integrated drill-reamer tool; the drill body is rigidly connected to the drill cutting edges. The drill cutting band extends from the drill body and smoothly transitions to the drill cutting edges; chip grooves are formed between adjacent drill cutting edges. The reamer tail is arranged in a stepped manner around the outer end of the drill head, and the diameter of the reamer tail is larger than that of the drill head. The reamer tail extends into a neck, and the downward-extending end of the neck is detachably connected to the clamping portion. The clamping portion includes a fixed frame, two opposing clamping arc-shaped members, and a rotating handle. The rotating handle is connected to the clamping arc-shaped members to drive them to slide on the same parallel line within the fixed frame. The two clamping arc-shaped members form a hollow ring to surround and fix the neck.

[0006] Furthermore, the reaming tail includes a reaming cutting edge, a reaming groove, and a reaming body. The reaming body is arranged around the surface end of the drilling body, the reaming groove is spirally arranged around the surface end of the drilling body, and several reaming cutting edges are located at the front end of the reaming body.

[0007] Furthermore, the drilling cutting edge has two opposing cutting edges, and the reaming cutting edge has six opposing cutting edges.

[0008] Furthermore, the overall diameter of the drilling cutting edge is 15mm; the overall diameter of the reaming cutting edge is 20mm.

[0009] Furthermore, the blade neck is provided with a locking part extending outward. When the two clamping arc-shaped parts move, they generate a locking part of adjustable size. When the two clamping arc-shaped parts abut against each other, the space of the locking part reaches its minimum, and the locking part is locked in the locking part to form a locking.

[0010] Furthermore, both the left and right ends of the fixed frame are provided with connecting parts, and the rotating handle passes through the fixed frame and is threadedly connected to the snap-fit ​​part.

[0011] Furthermore, a quick-connect plate is provided on the back of the fixed frame for connecting the device that controls the operation of the cutting tool.

[0012] Furthermore, there are opposing annular protrusions between the inner walls of the two clamping arc-shaped parts, and corresponding annular grooves are provided on the outer surface of the corresponding blade neck. The annular grooves and annular protrusions are connected in a cooperative manner.

[0013] The drilling and reaming integrated tool provided in this embodiment of the present invention has at least one of the following technical effects:

[0014] In this design, rotating the handle drives two clamping arc-shaped parts to slide within the fixed frame, forming an annular space adapted to the diameter of the cutting neck. The cutting neck is then inserted and locked. The drilling cutting edge cuts into the workpiece, and the drilling tool simultaneously trims the hole wall, with chips discharged through the chip groove. After the drilling head completes the drilling, the reaming tail follows, achieving a stepped cutting process for precision hole diameter finishing. The integrated drilling and reaming design eliminates tool change time, completing the rough drilling to fine reaming process in a single feed, thus improving efficiency. The cutting neck and clamping parts are detachably connected, allowing for quick replacement of worn parts and reducing maintenance costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the drilling and reaming section of a drill-reaming integrated tool provided in an embodiment of this utility model;

[0017] Figure 2 A schematic diagram of the clamping part of the drilling and reaming integrated tool provided in an embodiment of this utility model;

[0018] Figure 3 A schematic diagram of the overall structure of the integrated drilling and reaming tool provided in this embodiment of the utility model;

[0019] The following are the labeling elements in the figure:

[0020] 100. Drilling and reaming section; 110. Drilling head; 111. Drilling cutting edge; 112. Drilling tool band; 113. Drilling tool body; 114. Chip groove; 115. Tool neck; 120. Reaming tail section; 121. Reaming cutting edge; 122. Reaming groove; 123. Reaming tool body;

[0021] 200 Clamping part; 210 Fixed frame; 220 Clamping arc-shaped part; 230 Rotating handle; 240 Snap-fit ​​part; 214 Snap-fit ​​part; 250 Connecting part; 260 Quick-release connecting plate; 270 Annular protrusion; 271 Annular groove. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings 1-3, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The following description is based on the accompanying drawings. Figure 1-3 The described embodiments are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.

[0023] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "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 drawings. They are only for the convenience of describing the embodiments of this utility model 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 utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0026] In a first embodiment, a drill-reamer integrated tool is provided, including a drill-reamer portion 100 and a clamping portion 200. The drill-reamer portion 100 includes a drill head 110 and a reamer tail portion 120 connected to its rear end. The drill head 110 includes drill cutting edges 111, a drill cutting band 112, and a drill body 113. A plurality of drill cutting edges 111 are disposed at the front end of the drill-reamer integrated tool. The drill body 113 is rigidly connected to the drill cutting edges 111. The drill cutting band 112 extends from the drill body 113 and smoothly transitions with the drill cutting edges 111. Chip grooves 114 are formed between adjacent drill cutting edges 111. The reamer tail portion 120 is arranged in a stepped manner around the outer end of the drill head 110, and the diameter of the reamer tail portion 120 is larger than that of the drill head 110. The reaming tail 120 extends into a cutting neck 115, and the downward-extending end of the cutting neck 115 is detachably connected to the clamping part 200. The clamping part 200 includes a fixed frame 210, two opposing clamping arc-shaped members 220, and a rotating handle 230. The rotating handle 230 is connected to the clamping arc-shaped members 220 to drive them to slide along the same parallel line within the fixed frame 210. The two clamping arc-shaped members 220 form a hollow ring to surround and fix the cutting neck 115.

[0027] Specifically, rotating the handle 230 drives the two clamping arc-shaped parts 220 to slide within the fixed frame 210, forming an annular space adapted to the diameter of the cutter neck 115. The cutter neck 115 is then inserted and locked. The drilling edge 111 cuts into the workpiece, and the drilling band 112 simultaneously trims the hole wall, with chips discharged through the chip groove 114. After the drilling head 110 completes drilling, the reaming tail 120 follows up to enlarge the hole, achieving a stepped cutting diameter finishing process. Users can select integrated drill-reaming tools with different heights for the drilling head 110 and the reaming tail 120 according to the actual required drilling depth. After drilling to the required product depth, the product edge is sharp. At this point, a tool matching the product hole depth and the height of the reaming tail 120 is selected, and the reaming tail 120 is used for fine reaming to smooth the sharp edges, achieving finishing. The integrated drill-reaming design eliminates tool change time, completing the rough drilling to fine reaming process in a single pass, improving efficiency. The blade neck 115 is detachably connected to the clamping part 200, allowing for quick replacement of worn parts and reducing maintenance costs.

[0028] Furthermore, the reaming tail section 120 includes reaming cutting edges 121, reaming grooves 122, and a reaming body 123. The reaming body 123 is arranged around the surface end of the drilling body 113, and the reaming grooves 122 are spirally arranged around the surface end of the drilling body 113. Several reaming cutting edges 121 are located at the front end of the reaming body 123. Specifically, the reaming body 123 is arranged around the surface end of the drilling body 113 and is equipped with spiral reaming grooves 122, so that the reaming cutting edges 121 cut into the hole wall along a spiral path after drilling, realizing stepped precision reaming; the spiral grooves simultaneously guide the chips to be discharged axially, avoiding interference with the chips in the drilling stage, and improving reaming accuracy and chip removal smoothness.

[0029] Furthermore, the drilling cutting edge 111 has two opposing cutting edges, and the reaming cutting edge 121 has six opposing cutting edges. Specifically, limiting the number of drilling cutting edges 111 to two and the number of reaming cutting edges 121 to six reduces cutting resistance and ensures core strength, while the six reaming cutting edges 121 increase the density of finishing contact points and evenly distribute the cutting load.

[0030] Furthermore, the overall diameter of the drilling cutting edge 111 is 15mm; the overall diameter of the reaming cutting edge 121 is 20mm.

[0031] Furthermore, the blade neck 115 is provided with an outwardly extending locking portion 240. When the two clamping arc-shaped members 220 move, they generate an adjustable-size engaging portion 214. When the two clamping arc-shaped members 220 abut against each other, the space constricted by the engaging portion 214 reaches its minimum, and the locking portion 240 is locked within the engaging portion 214 to form a locking. Specifically, to adaptively lock the blade neck 115 and prevent circumferential slippage, a protruding locking portion 240 can be machined on the outer wall of the blade neck 115, and a wedge-shaped engaging surface is provided on the inner side of the clamping arc-shaped member 220. The operation process is that rotating the handle drives the clamping member to slide, so that the engaging surface is wedge-tightly fixed with the locking portion 240.

[0032] Furthermore, both the left and right ends of the fixed frame 210 are provided with connecting parts 250, and the rotating handle 230 passes through the fixed frame 210 and is threadedly connected to the locking part 240. A bidirectional screw is used to pass through the fixed frame 210. When the handle is rotated, it drives the two clamping parts to move synchronously in opposite directions. The action flow is to rotate the handle clockwise to reduce the space of the locking part 214 until the locking part 240 is completely locked.

[0033] Furthermore, a quick-connect plate 260 is provided on the back of the fixed frame 210 for connecting the device that controls the operation of the cutting tool.

[0034] Furthermore, the inner walls of the two clamping arc-shaped parts 220 are provided with opposing annular protrusions 270, and the outer surface of the corresponding cutter neck 115 is provided with corresponding annular grooves 271, which are connected to the annular protrusions 270. The annular grooves 271 are machined on the surface of the cutter neck 115, and matching protrusions are machined on the inner side of the clamping parts. When the clamping parts are closed, the protrusions and grooves are precisely aligned and engaged to prevent axial displacement of the tool during machining.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drill and reamer in one tool, characterized in that, The tool includes a drilling and reaming section and a clamping section. The drilling and reaming section includes a drilling head and a reaming tail connected to its rear end. The drilling head includes a drilling cutting edge, a drilling band, and a drilling body. Several drilling cutting edges are disposed at the front end of the integrated drilling and reaming tool. The drilling body is rigidly connected to the drilling cutting edges. The drilling band extends from the drilling body and smoothly transitions to the drilling cutting edges. Chip grooves are formed between adjacent drilling cutting edges. The reaming tail is arranged in a stepped manner around the outer end of the drilling head, and the diameter of the reaming tail is larger than that of the drilling head. The reaming tail extends into a cutting neck, and the downward-extending end of the cutting neck is detachably connected to the clamping section. The clamping section includes a fixed frame, two opposing clamping arc-shaped members, and a rotating handle. The rotating handle is connected to the clamping arc-shaped members to drive them to slide on the same parallel line within the fixed frame. The two clamping arc-shaped members form a hollow ring to surround and fix the cutting neck.

2. The drill-ream one-piece cutter of claim 1, wherein, The reaming tail includes a reaming cutting edge, a reaming groove, and a reaming body. The reaming body is arranged around the surface end of the drilling body. The reaming groove is spirally arranged around the surface end of the drilling body. Several reaming cutting edges are arranged at the front end of the reaming body.

3. The drill-ream one-piece cutter of claim 2, wherein, The drilling cutting edge has two opposite cutting edges, and the reaming cutting edge has six opposite cutting edges.

4. The drill-ream one-piece cutter of claim 2, wherein, The overall diameter of the drilling cutting edge is 15mm; the overall diameter of the reaming cutting edge is 20mm.

5. The drill-ream one-piece cutter of claim 1, wherein, The blade neck is provided with a snap-fit ​​portion extending outward. When the two clamping arc-shaped members move, they generate an adjustable snap-fit ​​portion. When the two clamping arc-shaped members abut against each other, the snap-fit ​​portion reaches its minimum size and is snapped into the snap-fit ​​portion to form a snap-fit.

6. The drill-ream one-piece cutter of claim 5, wherein, Both ends of the fixed frame are provided with connecting parts, and the rotating handle passes through the fixed frame and is threadedly connected to the snap-fit ​​part.

7. The drill-ream one-piece cutter of claim 1, wherein, The back of the fixed frame is equipped with a quick-connect plate for connecting the device that controls the operation of the cutting tool.

8. The drill-ream one-piece cutter of claim 1, wherein, The inner sidewalls of the two clamping arc-shaped parts are provided with opposing annular protrusions, and the outer surface of the blade neck is provided with corresponding annular grooves, which are connected to the annular protrusions.

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