A cemented carbide tool

Abstract

The utility model relates to the technical field of machining relates to a hard alloy cutter, including cutter head department and handle department, in the cutter head department, cutter head is assembled to the front end of the mounting rod and is fixed by the locking nut of screw portion, and the both ends of cutter head are installed and are detachably fixed alloy cutter through bolt, the locking hole is equipped in the end of mounting rod, and the front end of the adjusting rod of handle department is inserted into the mounting rod, and locking bolt is inserted into the corresponding hole of mounting rod through adjusting rod locking hole and realizes the positioning, and adjusting rod and clamping rod are connected through flange. The utility model optimizes cutter head fixed structure, cooperates adjustable cutter handle design, strengthens cutter head stress stability, promotes machining accuracy and cutter head service life, and reduces the cost of consumables.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and specifically to a cemented carbide cutting tool. Background Technology

[0002] Carbide cutting tools, with their core advantages of high hardness and high wear resistance, have become indispensable key tools in metal processing, mold making, stone cutting, and other fields. With the rapid development of the precision manufacturing industry, machining scenarios are placing increasingly stringent demands on the adaptability, stability, and machining accuracy of cutting tools—not only do they need to be adaptable to workpieces of different sizes and machining environments, but they also need to maintain structural stability during high-speed, high-intensity cutting to avoid machining errors caused by tool tip misalignment and tool holder wobbling. However, current carbide cutting tools on the market have many shortcomings in their structural design, making it difficult to meet the needs of modern machining.

[0003] Traditional carbide cutting tools typically use alloy tips that are fixed to the cutter head at a single point with bolts, lacking a targeted support structure. When subjected to axial impact and radial cutting forces, the cutting tip is prone to root bending and edge sinking due to concentrated stress, resulting in unevenness or texture on the machined surface. Especially in high-intensity cutting scenarios, a single fixed point is insufficient to withstand impact loads, frequently causing problems such as cutting tip skew and breakage. This not only reduces machining accuracy but also significantly shortens the cutting tip's lifespan and increases consumable costs. Utility Model Content

[0004] This invention provides a cemented carbide cutting tool to address the problems of existing technologies.

[0005] The objective of this utility model can be achieved through the following technical solution: A cemented carbide cutter includes a cutter head and a cutter handle. The cutter head includes a mounting rod, a cutter disc slidably mounted on the mounting rod, and a locking nut. The cutter disc is slidably disposed at the front end of the mounting rod. The side end of the mounting rod near the cutter disc has a threaded portion, and the end of the rod has at least two sets of locking holes along its length. The locking nut is threadedly connected to the threaded portion, and its side end abuts against the side end of the cutter disc to fix the position of the cutter disc. The two ends of the cutter disc have symmetrically arranged mounting portions. A cemented carbide cutter is detachably fixed to the mounting portion by bolts. The cutter handle includes an adjusting rod and a clamping rod. The front end of the adjusting rod is slidably inserted into the end of the mounting rod, and a locking hole is provided through the side end. A connecting flange is fixedly provided at the end of the adjusting rod, and a connecting flange is fixedly provided at the end of the clamping rod near the adjusting rod. A locking bolt is threadedly connected to the locking hole. The front end of the locking bolt can be selectively inserted into either locking hole to achieve axial positioning of the adjusting rod and the mounting rod.

[0006] In a further improvement, the mounting part is inclined and its end is integrally extended with an inclined support part. A support plate is fixed to the support part by bolts. The upper end face of the support plate abuts against the end of the alloy knife to form a stable support for the alloy knife.

[0007] In a further improvement, the mounting rod has sliding grooves on both sides along its length, and an anti-loosening washer is provided between the cutter head and the locking nut. The inner wall of the washer is integrally formed with a guide block, which is slidably embedded in the sliding groove.

[0008] In a further improvement, a positioning seat is coaxially fixed at the front end of the mounting rod, and a positioning hole is provided in the positioning seat along the axial direction, the positioning hole being collinear with the axis of the mounting rod.

[0009] In a further improvement, at least two sets of locking bolts are evenly distributed along the circumference of the adjusting rod, and the multiple sets of locking bolts respectively cooperate with the corresponding locking holes.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. The cutter head of this utility model can be adjusted along the axial direction of the mounting rod to adapt to different processing width requirements; the telescopic cooperation between the adjusting rod and the mounting rod allows the length of the tool holder to be flexibly adjusted according to the processing space, improving the applicability of the equipment; 2. The alloy blade of this utility model is detachably connected by bolts and can be replaced individually after wear, without scrapping the whole blade, thus reducing the cost of consumables. The structure of each adjustment part is simple, and only basic tools are needed to complete the position adjustment and component replacement, which greatly shortens the downtime for maintenance. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a partial exploded view of the blade head of this utility model.

[0012] In the diagram, 1. Cutter head; 11. Mounting rod; 111. Threaded part; 112. Locking hole; 113. Slide groove; 12. Cutter disc; 121. Mounting part; 122. Alloy cutter; 123. Support part; 124. Support plate; 13. Locking nut; 14. Anti-loosening washer; 141. Guide block; 2. Cutter handle part; 21. Adjusting rod; 211. Locking hole; 212. Connecting flange one; 213. Locking bolt; 22. Clamping rod; 221. Connecting flange two; 3. Positioning seat; 31. Positioning hole. Detailed Implementation

[0013] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 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.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] The following describes the embodiments and appendices. Figures 1-3 The technical solution of this utility model will be further described below.

[0016] Example 1 A carbide cutting tool includes a head 1 and a handle 2. The head 1 includes a mounting rod 11, a cutting disc 12 slidably mounted on the mounting rod 11, and a locking nut 13. The cutting disc 12 is slidably disposed at the front end of the mounting rod 11. The mounting rod 11 has a threaded portion 111 near the side end of the cutting disc 12 and at least two sets of locking holes 112 along its length. The locking nut 13 is threaded to the threaded portion 111 and its side end abuts against the side end of the cutting disc 12 to fix the position of the cutting disc 12. The cutting disc 12 has symmetrically provided mounting portions 121 at both ends. An alloy knife 122 is detachably fixed to the mounting rod 11 by bolts. The knife handle 2 includes an adjusting rod 21 and a clamping rod 22. The front end of the adjusting rod 21 is slidably inserted into the end of the mounting rod 11 and a locking hole 211 is provided through the side end. A connecting flange 212 is fixed to the end of the adjusting rod 21. A connecting flange 221 is fixed to the end of the clamping rod 22 near the adjusting rod 21. A locking bolt 212 is threaded into the locking hole 211. The front end of the locking bolt 212 can be selectively inserted into either locking hole 112 to achieve axial positioning of the adjusting rod 21 and the mounting rod 11.

[0017] like Figures 1-3 As shown, this utility model adopts a split structure of the cutter head and the cutter shank. All components are made of high-strength alloy materials, combining rigidity and impact resistance. The cutter head focuses on the cutting function, while the cutter shank emphasizes adaptability and adjustment, as detailed below: The mounting rod 11 of the cutter head 1 is cylindrical in shape. The front end is a smooth section that fits the cutter head. The side end near the cutter head 12 is machined with a precision threaded part 111 to provide a connection reference for the locking nut 13. At least two sets of locking holes 112 are evenly opened along the length direction at the end. The hole walls are chamfered to facilitate the precise insertion of the locking bolt 212 and achieve axial positioning with the adjusting rod 21. The center of the cutter head 12 is provided with a through hole that fits the smooth section of the mounting rod 11 and can slide along the axial direction of the mounting rod 11. The mounting parts 121 symmetrically machined at both ends of the cutter head 12 are stepped in structure and have bolt holes on the surface. They are detachably connected to the alloy cutter 122 by internal hex bolts to facilitate cutter head replacement. The symmetrical design of the mounting parts 121 makes the cutter head bear force evenly and avoids machining vibration caused by the shift of the center of gravity during cutting. The adjusting rod 21 of the tool holder 2 is made of the same alloy as the mounting rod 11. It is hollow inside and slides on the outside of the end of the mounting rod 11. The locking hole 211 through the side end has the same diameter as the locking hole 112 of the mounting rod 11. It has internal threads and is positioned by the threaded connection of the locking bolt 212. The connecting flange 212 welded to the end of the adjusting rod 21 is a circular steel plate with evenly spaced bolt holes on the surface for docking with the connecting flange 221 of the clamping rod 22. The clamping rod 22 is a standard rod body adapted to clamping equipment such as machine tools and handheld drills. The surface is treated with anti-slip knurling. The connecting flange 221 welded at the end is dimensionally matched with the connecting flange 212. They are fastened together by multiple sets of bolts to ensure the rigidity of the connection and avoid torque loss during transmission. The end of the clamping rod 22 can be processed into a cylindrical, square or conical structure according to the requirements of the clamping equipment. The locking bolt 212 is a hexagonal head bolt with a chamfered front end for easy and quick insertion into the locking hole 112 of the mounting rod 11. The bolt head is embedded in the side groove of the adjusting rod 21 to avoid protruding surface affecting operation. The thread preload is used to achieve rigid positioning of the adjusting rod and the mounting rod to prevent axial movement during cutting.

[0018] The assembly process of this utility model is as follows: First, select the appropriate alloy cutter 122 according to the processing requirements. Align its connecting lug with the bolt hole of the mounting part 121 of the cutter head 12, insert the hexagonal bolt and tighten it to ensure that the alloy cutter 122 and the mounting part 121 fit tightly without looseness or misalignment. The two sets of alloy cutters 122 should be installed symmetrically to ensure the balance of the cutter head. Second, slide the cutter head 12 with the alloy cutter 122 assembled from the front end of the mounting rod 11 and slide it along the smooth section to the preset cutting position. Take the locking nut 13 and screw it into the threaded part 111 of the mounting rod 11 until the side end of the nut is tightly abutted against the side end of the cutter head 12. Use a wrench to further tighten it to ensure that... Since the cutter head 12 cannot move axially, next, according to the size of the processing space and the position of the clamping equipment, slide the adjusting rod 21 along the end of the mounting rod 11 and adjust it to a suitable length. Align the locking hole 211 of the adjusting rod 21 with the corresponding locking hole 112 of the mounting rod 11. Screw the locking bolt 212 into the locking hole 211 and tighten it until the front end is inserted into the locking hole 112 to achieve axial positioning of the two. Finally, align the connecting flange 212 at the end of the adjusting rod 21 with the connecting flange 221 of the clamping rod 22, insert the connecting bolts and tighten them one by one to ensure that the flange surfaces fit tightly without gaps or shaking, and complete the assembly of the entire cutter.

[0019] This utility model can be adjusted according to different usage scenarios: For flat edge trimming of metal sheets or burr removal of plastic parts, select flat-blade alloy cutter 122 assembly, adjust the cutter head 12 to the position where the two sets of alloy cutters 122 are symmetrically distributed, and fix them with locking nut 13. Adjust the length of the cutter shank according to the position of the spindle of the clamping equipment so that the cutter head is aligned with the processing surface. After starting the equipment, the synchronous cutting of the symmetrical cutter head is used to achieve efficient and flat processing effect, avoiding the problem of uneven force in single-blade cutting. When the processing scenario is the deep cavity of a mold or the inner wall of a tubular part, loosen the locking bolt 212, slide the hollow adjusting rod 21 outward along the mounting rod 11 to make the overall length of the tool holder match the depth of the deep cavity, realign the locking hole and tighten the locking bolt, select the arc-shaped alloy tool 122, adjust the position of the tool disc 12 so that the length of the tool tip extends matches the inner diameter of the cavity, and ensure that the tool tip does not collide with the cavity wall during the processing to achieve precise forming.

[0020] This utility model has the following beneficial effects: 1. The cutter head 12 can be adjusted along the axial direction of the mounting rod 11 to adapt to different machining width requirements; the telescopic cooperation between the adjusting rod 21 and the mounting rod 11 allows the length of the tool holder to be flexibly adjusted according to the machining space, improving the applicability of the equipment; 2. Alloy blade 122 is detachably connected by bolts and can be replaced individually after wear, without scrapping the whole blade, reducing consumable costs. The structure of each adjustment part is simple, and only basic tools are needed to complete the position adjustment and part replacement, which greatly shortens the downtime for maintenance.

[0021] As a further preferred embodiment, the mounting part 121 is inclined and its end is integrally extended with an inclined support part 123. A support plate 124 is fixed to the support part 123 by bolts. The upper end face of the support plate 124 abuts against the end of the alloy knife 122 to form a stable support for the alloy knife 122.

[0022] Specifically, the inclined mounting part 121 and the support part 123 form a triangular support structure. After the support plate 124 is fixed by bolts, it closely abuts against the end of the alloy cutter 122, dispersing the axial impact force and radial cutting force generated during cutting to the cutter head 12 body, thus avoiding the tip tilting caused by the alloy cutter 122 relying solely on the mounting bolt for single-point force.

[0023] As a further preferred embodiment, the mounting rod 11 has sliding grooves 113 on both sides along the length direction, and an anti-loosening washer 14 is provided between the cutter disc 12 and the locking nut 13. The inner wall of the washer 14 is integrally formed with a guide block 141, and the guide block 141 is slidably embedded in the sliding groove 113.

[0024] Specifically, the guide block 141 of the anti-loosening washer 14 is slidably embedded in the groove 113, which can completely restrict the relative rotation between the washer 14 and the mounting rod 11, and then block the rotation of the cutter head 12 by the friction between the washer and the cutter head 12; together with the thread preload of the locking nut 13, a dual locking structure of mechanical limiting and friction anti-loosening is formed, avoiding the problem of nut loosening caused by vibration during high-speed cutting; the anti-loosening washer 14 can isolate the direct friction between the cutter head 12 and the locking nut 13, and prevent metal chips from entering the thread gap and causing thread wear.

[0025] As a further preferred embodiment, a positioning seat 3 is coaxially fixed at the front end of the mounting rod 11, and a positioning hole 31 is provided in the positioning seat 3 along the axial direction. The positioning hole 31 is collinear with the axis of the mounting rod 11.

[0026] Specifically, the positioning hole 31 is collinear with the axis of the mounting rod 11. When assembling the tool head 12, a calibration rod can be inserted to assist in positioning, quickly aligning the center through hole of the tool head with the axis of the mounting rod, thus avoiding dynamic balance deviations caused by misalignment of the tool head. When cutting deep holes or machining stepped surfaces, a guide rod can be connected through the positioning hole 31 to make the guide rod fit against the wall of the machined hole, providing an additional guiding reference for the tool and avoiding cutting vibrations caused by an excessively large length-to-diameter ratio of the tool holder.

[0027] As a further preferred embodiment, at least two sets of locking bolts 212 are evenly distributed along the circumference of the adjusting rod 21, and the multiple sets of locking bolts 212 respectively cooperate with the corresponding locking holes 112.

[0028] Specifically, at least two sets of locking bolts 212 are symmetrically distributed around the circumference of the adjusting rod 21 to evenly transmit the axial positioning force to the end of the mounting rod 11, avoiding eccentric force on the adjusting rod caused by single bolt positioning, reducing gap wobble during cutting torque transmission, and improving the overall rigidity of the tool holder.

[0029] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A cemented carbide knife, characterized in that, The device includes a cutter head and a cutter handle. The cutter head includes a mounting rod, a cutter disc slidably mounted on the mounting rod, and a locking nut. The cutter disc is slidably disposed at the front end of the mounting rod. The mounting rod has a threaded portion near the cutter disc and at least two sets of locking holes along its length. The locking nut is threadedly connected to the threaded portion and its side end abuts against the side end of the cutter disc to fix the position of the cutter disc. The cutter disc has symmetrically arranged mounting portions at both ends. Alloy cutters are detachably fixed to the mounting portions by bolts. The cutter handle includes an adjusting rod and a clamping rod. The front end of the adjusting rod is slidably inserted into the end of the mounting rod and a locking hole is provided through the side end. A connecting flange is fixedly provided at the end of the adjusting rod. A connecting flange is fixedly provided at the end of the clamping rod near the adjusting rod. A locking bolt is threadedly connected to the locking hole. The front end of the locking bolt can be selectively inserted into either locking hole to achieve axial positioning of the adjusting rod and the mounting rod.

2. The cemented carbide cutting tool according to claim 1, characterized in that, The mounting part is inclined and its end is integrally extended with an inclined support part. A support plate is fixed to the support part by bolts. The upper end face of the support plate abuts against the end of the alloy knife to form a stable support for the alloy knife.

3. A cemented carbide cutting tool according to claim 1, characterized in that, The mounting rod has sliding grooves on both sides along its length. An anti-loosening washer is provided between the cutter head and the locking nut. A guide block is integrally formed on the inner wall of the washer, and the guide block is slidably embedded in the sliding groove.

4. A cemented carbide cutting tool according to claim 1, characterized in that, The front end of the mounting rod is coaxially fixed with a positioning seat, and the positioning seat has a positioning hole along the axial direction, the positioning hole being collinear with the axis of the mounting rod.

5. A cemented carbide cutting tool according to claim 1, characterized in that, The locking bolts are distributed at equal intervals along the circumference of the adjusting rod in at least two sets, and the multiple sets of locking bolts respectively cooperate with the corresponding locking holes.

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