Hard metal formed countersink with pilot

Abstract

The utility model relates to tool technical field discloses a hard alloy forming spot facer with guide pillar, including spot facer bar, the guide pillar subassembly for positioning, and the spot facer subassembly for opening hole, and the adjusting assembly for adjusting spot facer subassembly height, spot facer bar includes: the bar main part, and the bar adjusting groove of setting up in the surface of bar main part, spot facer subassembly includes: the spot facer ring of sliding installation in the outside of bar main part, and the adjusting insert of detachable connection with adjusting assembly, adjusting assembly includes: the adjusting lead screw of rotation installation in the inside of bar main part, and the lead screw sleeve of rotation installation in the surface of adjusting lead screw, the utility model discloses the transmission of the precision screw pair of adjusting lead screw and lead screw sleeve is realized, and the adjustment precision is high, and the operator can carry out fine adjustment to cutting height with hexagon spanner, and spot facer ring is oriented through bar adjusting groove and guide column adjusting groove, and forms the stable support.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, specifically a cemented carbide forming countersink with guide posts. Background Technology

[0002] A countersink, also known as a countersink drill, countersunk drill, or chamfering cutter, is a tool used in machining to finish the end face of a hole, producing flat, cylindrical, or conical surfaces. Carbide countersinks are made with tungsten carbide as the hard phase and cobalt as the binder phase, possessing high hardness, high strength, and excellent wear and corrosion resistance.

[0003] In the field of machining, countersinking is a common machining process used to create tapered or cylindrical countersinks at the ends of existing holes to accommodate components such as screw heads and washers, ensuring that their surfaces are flush with the workpiece. For countersinking of shaped surfaces with specific contours, a forming countersink is usually required.

[0004] Currently, the cutting depth or height adjustment of countersinks usually relies on shims or simple threaded structures. The adjustment process is cumbersome and inaccurate, and it is inconvenient to disassemble and replace the cutter head and the cutter body. Once the cutter head is worn, the entire cutter needs to be replaced, resulting in high operating costs. Utility Model Content

[0005] Given that the existing technology has the following problems, the cutting depth or height adjustment of the existing countersink usually relies on shims or simple threaded structures, the adjustment process is cumbersome and inaccurate, and it is inconvenient to disassemble and replace the cutter head and the cutter body. Once the cutter head is worn, the entire cutter needs to be replaced, resulting in high operating costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A carbide forming countersink with guide posts includes a countersink shank; a guide post assembly for positioning; a countersink assembly for drilling; and an adjustment assembly for adjusting the height of the countersink assembly. The countersink cutter bar includes: a cutter bar body; and a cutter bar adjustment groove formed on the surface of the cutter bar body; The countersink assembly includes: a countersink blade ring slidably mounted on the outside of the blade holder body; and an adjustment plug detachably connected to the adjustment assembly; The adjustment assembly includes: an adjustment screw rotatably mounted inside the main body of the tool holder; and a screw sleeve rotatably mounted on the surface of the adjustment screw.

[0007] As a further embodiment of this utility model, the countersink assembly further includes: a connecting groove formed at the connection between the adjusting plug and the lead screw sleeve; and a fixing screw fixed to the side of the adjusting plug.

[0008] As a further improvement of this utility model: the fixing screw passes through the interior of the adjusting plug and the lead screw sleeve, the top of the adjusting lead screw is fixed with an internal hexagonal adjusting head, and a support is provided at the connection between the adjusting lead screw and the main body of the tool holder.

[0009] As a further embodiment of this utility model, the countersink assembly further includes: countersink blades fixed to the bottom of the countersink blade ring, the countersink blades being evenly distributed at equal intervals along the bottom end face of the countersink blade ring.

[0010] As a further embodiment of this utility model: the guide post assembly includes: a positioning cone detachably installed at the bottom of the tool bar body; a guide post adjustment groove formed on the surface of the positioning cone, the guide post adjustment groove being interconnected with the tool bar adjustment groove, and the countersinking cutter ring moving along the direction of the guide post adjustment groove and the tool bar adjustment groove via an adjustment plug.

[0011] As a further embodiment of this utility model, the guide post assembly further includes a positioning post that passes through the bottom of the adjusting screw, and the positioning post is movably connected to the adjusting screw.

[0012] As a further embodiment of this utility model, the countersink cutter bar also includes: a connector fixed to the top of the cutter bar body; and a connection hole opened inside the cutter bar body for accommodating the adjustment component.

[0013] As a further improvement of this utility model: the sides of the tool holder body and the positioning cone are provided with connecting parts, and connecting screws are inserted inside the connecting parts.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model achieves transmission through the precision threaded pair of the adjusting screw and the screw sleeve by setting an adjusting component. The adjustment accuracy is high, and the operator can finely adjust the cutting height with a hex wrench. The countersink cutter ring is guided by the tool bar adjusting groove and the guide post adjusting groove, forming a stable support.

[0015] 2. The guide post assembly of this utility model can cooperate with the pre-machined hole of the workpiece to provide reliable radial positioning for the entire cutting process. At the same time, the guide post assembly is detachable, which facilitates subsequent assembly and maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a cemented carbide forming countersink with guide posts. Figure 2 This is a schematic diagram of a half-section structure of a cemented carbide forming countersink with guide posts. Figure 3 This is a half-section schematic diagram of the adjusting groove of a cemented carbide forming countersink cutter bar with guide posts. Figure 4 A bottom view schematic diagram of a cemented carbide forming countersink with guide posts; Figure 5 This is a schematic diagram of a cemented carbide forming countersink assembly with guide posts.

[0017] In the diagram: 1. Countersink cutter bar; 101. Barter bar body; 102. Barter bar adjustment groove; 103. Connector; 104. Connecting hole; 2. Countersink assembly; 201. Countersink cutter ring; 202. Countersink cutter blade; 203. Adjustment insert; 204. Connecting groove; 205. Fixing screw; 3. Guide post assembly; 301. Positioning cone; 302. Guide post adjustment groove; 303. Positioning post; 4. Adjustment assembly; 401. Hexagonal socket head cap; 402. Support; 403. Adjusting screw; 404. Screw sleeve; 5. Connector; 6. Connecting screw. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] Example 1: Please refer to Figures 1-4 This is the first embodiment of the present invention. This embodiment provides a carbide forming countersink with guide posts, including a countersink shank 1; a guide post assembly 3 for positioning; a countersink assembly 2 for drilling; and an adjustment assembly 4 for adjusting the height of the countersink assembly 2. The countersink cutter 1 includes: a cutter shank body 101; and a cutter shank adjustment groove 102 formed on the surface of the cutter shank body 101; The countersink assembly 2 includes: a countersink blade ring 201 that is slidably mounted on the outside of the blade holder body 101; and an adjustment plug 203 that is detachably connected to the adjustment assembly 4; The adjustment assembly 4 includes: an adjustment screw 403 rotatably mounted inside the tool holder body 101; and a screw sleeve 404 rotatably mounted on the surface of the adjustment screw 403.

[0021] Specifically, the countersink assembly 2 also includes: a connecting groove 204 formed at the connection between the adjusting plug 203 and the lead screw sleeve 404; and a fixing screw 205 fixed to the side of the adjusting plug 203.

[0022] Furthermore, the lead screw sleeve 404 can be connected to the adjusting plug 203 via the fixing screw 205. The lead screw sleeve 404 has a straight structure and can cooperate with the connecting groove 204 to drive the countersink ring 201 to slide up and down. The adjusting component 4 and the countersink component 2 are tightly connected through the connecting groove 204 and the fixing screw 205, ensuring reliable force transmission and eliminating the risk of loosening.

[0023] Specifically, the fixing screw 205 passes through the interior of the adjusting plug 203 and the lead screw sleeve 404, the top of the adjusting lead screw 403 is fixed with an internal hexagon adjustment head 401, and a support member 402 is provided at the connection between the adjusting lead screw 403 and the tool holder body 101.

[0024] Furthermore, after the internal hexagon adjustment head 401 rotates, it can drive the adjustment screw 403 to rotate, thereby driving the screw sleeve 404 on the adjustment screw 403 to move axially along the adjustment screw 403.

[0025] Specifically, the countersink assembly 2 also includes: a countersink blade 202 fixed to the bottom of the countersink blade ring 201, the countersink blade 202 being evenly distributed at equal intervals along the bottom end face of the countersink blade ring 201.

[0026] Furthermore, the countersink blade 202 is used to cut the workpiece, and the countersink blade ring 201 can be disassembled and replaced.

[0027] Specifically, the guide post assembly 3 includes: a positioning cone 301 detachably mounted on the bottom of the tool holder body 101; a guide post adjustment groove 302 formed on the surface of the positioning cone 301, the guide post adjustment groove 302 being interconnected with the tool holder adjustment groove 102, and the countersinking cutter ring 201 moving along the direction of the guide post adjustment groove 302 and the tool holder adjustment groove 102 via the adjustment plug 203.

[0028] Furthermore, the guide post adjustment groove 302 and the tool holder adjustment groove 102 restrict the movement direction of the countersink cutter ring 201.

[0029] In use, the entire tool is made of cemented carbide. When it is necessary to adjust the cutting height of the countersink assembly 2, a hex wrench is inserted into the internal hexagonal adjustment head 401 at the top of the adjusting screw 403. The adjusting screw 403 is rotated. Since the adjusting screw 403 is restricted inside the tool holder body 101 by the support member 402, it can only rotate and cannot move axially. Therefore, its rotational motion will drive the screw sleeve 404 that cooperates with it to produce precise axial movement. The screw sleeve 404 is connected to the adjusting plug 203 through the connecting groove 204 and is fastened by the fixing screw 205, thereby transmitting the axial movement to the adjusting plug 203. Since the countersink ring 201 passes through the adjusting plug 203 inside it, and the adjusting plug 203 passes through the tool holder adjusting groove 102 and the guide post adjusting groove 302, the two interconnected adjusting grooves form the moving track of the countersink assembly 2, so that it can only slide along the axial direction of the tool holder body 101 and will not rotate, realizing stepless fine adjustment of the cutting height.

[0030] In summary, by setting the adjustment component 4, the transmission is achieved through the precision thread pair of the adjusting screw 403 and the screw sleeve 404, resulting in high adjustment accuracy. The operator can finely adjust the cutting height using a hex wrench. The countersinking cutter ring 201 is guided by the cutter bar adjustment groove 102 and the guide post adjustment groove 302, forming a stable support.

[0031] Example 2: Please refer to Figures 3-5 This is the second embodiment of the present utility model.

[0032] The guide post assembly 3 also includes a positioning post 303 that passes through the bottom of the adjusting screw 403, and the positioning post 303 is movably connected to the adjusting screw 403.

[0033] Furthermore, the positioning cone 301 can also be replaced with a cutting tool to achieve preliminary hole drilling.

[0034] Specifically, the countersink shank 1 also includes: a connector 103 fixed to the top of the shank body 101; and a connection hole 104 opened inside the shank body 101 to accommodate the adjustment component 4.

[0035] Furthermore, the connection hole 104 is used to install the adjustment component 4.

[0036] Specifically, the sides of the tool holder body 101 and the positioning cone 301 are provided with connecting parts 5, and connecting screws 6 are inserted inside the connecting parts 5.

[0037] Furthermore, the tool holder body 101 and the positioning cone 301 are detachably fixed using connectors 5 and connecting screws 6, making assembly and maintenance convenient.

[0038] In use, the entire countersink is mounted on the spindle of a machine tool such as a drilling machine, milling machine, or machining center via the connector 103 at the top of the tool holder. The positioning pin 303 at the lower end of the guide pin assembly 3 is inserted into the pre-machined guide hole on the workpiece. The positioning cone 301 serves to transition and enhance guiding stability. This ensures the initial coaxiality between the countersink and the hole to be machined on the workpiece, preventing radial deviation during the cutting process from the outset. The machine spindle starts, driving the entire countersink tool holder 1 and countersink assembly 2 to rotate. Under the precise guidance of the guide pin assembly 3, the tool moves smoothly downwards, and the countersink insert 202 begins to perform the forming countersinking machining on the workpiece. Because the positioning cone 301 remains within the pre-machined guide hole, it ensures that the machined forming surface has extremely high coaxiality with the guide hole.

[0039] In summary, the guide post assembly 3 can cooperate with the pre-machined hole of the workpiece to provide reliable radial positioning for the entire cutting process. At the same time, the guide post assembly 3 is detachable, which facilitates subsequent assembly and maintenance.

[0040] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A cemented carbide forming countersink with guide posts, characterized in that, include: Countersink shank (1); guide post assembly (3) for positioning; countersink assembly (2) for drilling; and adjustment assembly (4) for adjusting the height of countersink assembly (2). The countersink cutter bar (1) includes: a bar body (101); and a bar adjustment groove (102) formed on the surface of the bar body (101). The countersink assembly (2) includes: a countersink ring (201) slidably mounted on the outside of the countersink body (101); and an adjustment plug (203) detachably connected to the adjustment assembly (4). The adjustment assembly (4) includes: an adjustment screw (403) rotatably mounted inside the tool holder body (101); and a screw sleeve (404) rotatably mounted on the surface of the adjustment screw (403).

2. The cemented carbide forming countersinking cutter with guide posts according to claim 1, characterized in that: The countersink assembly (2) further includes: a connecting groove (204) formed at the connection between the adjusting plug (203) and the lead screw sleeve (404); and a fixing screw (205) fixed to the side of the adjusting plug (203).

3. A cemented carbide forming countersinking cutter with guide posts according to claim 2, characterized in that: The fixing screw (205) passes through the interior of the adjusting plug (203) and the lead screw sleeve (404). The top of the adjusting lead screw (403) is fixed with an internal hexagonal adjusting head (401), and a support member (402) is provided at the connection between the adjusting lead screw (403) and the tool holder body (101).

4. A cemented carbide forming countersinking cutter with guide posts according to claim 3, characterized in that: The countersink assembly (2) further includes: a countersink blade (202) fixed to the bottom of the countersink blade ring (201), wherein the countersink blade (202) is evenly distributed at equal intervals along the bottom end face of the countersink blade ring (201).

5. A cemented carbide forming countersinking cutter with guide posts according to claim 4, characterized in that: The guide post assembly (3) includes: a positioning cone (301) detachably installed at the bottom of the tool holder body (101); a guide post adjustment groove (302) opened on the surface of the positioning cone (301), the guide post adjustment groove (302) and the tool holder adjustment groove (102) being interconnected, and the countersinking cutter ring (201) being moved along the direction of the guide post adjustment groove (302) and the tool holder adjustment groove (102) via the adjustment plug (203).

6. A cemented carbide forming countersinking cutter with guide posts according to claim 5, characterized in that: The guide post assembly (3) further includes a positioning post (303) extending through the bottom of the adjusting screw (403), the positioning post (303) being movably connected to the adjusting screw (403).

7. A cemented carbide forming countersinking cutter with guide posts according to claim 6, characterized in that: The countersink cutter bar (1) further includes: a connector (103) fixed to the top of the cutter bar body (101); and a connection hole (104) opened inside the cutter bar body (101) for accommodating the adjustment component (4).

8. A cemented carbide forming countersinking cutter with guide posts according to claim 7, characterized in that: The sides of the tool holder body (101) and the positioning cone (301) are provided with connecting parts (5), and connecting screws (6) are inserted inside the connecting parts (5).

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