Grooving and cutting tool

Abstract

The utility model provides a grooving and cutting tool which comprises tool bits arranged at the two ends of the tool, upper positioning faces are arranged on the top portions of the tool bits, side positioning faces are arranged on the sides, away from each other, of the two tool bits, the intersecting lines of the side positioning faces and the upper positioning faces are cutting edges, and fan-shaped chip rolling grooves are formed in the upper positioning faces. The fan-shaped chip rolling groove comprises an inclined bottom face and inclined side faces arranged on the two sides of the inclined bottom face, the inclined bottom face inclines from one side of the cutting edge to the bottom of the cutter, and the bottoms of the inclined side faces on the two sides are close to each other and incline. The cutting groove and the cutting tool have the advantages that the fan-shaped scrap rolling grooves are matched with the cutting edges, and the technical problem that curled scrap iron is prone to being generated in an existing cutting groove and the existing cutting tool is solved.

Description

Technical Field

[0001] This utility model relates to the field of turning tool technology, and in particular to a grooving and cutting tool. Background Technology

[0002] Grooving and parting tools are indispensable tools in machining, mainly used on lathes for machining right-angle grooves and cutting off workpieces. With the increasing demand for high-precision and complex parts in the machinery manufacturing industry, these tools have also undergone significant technological evolution, developing various types of grooving tools, such as round-head grooving tools, profile non-standard grooving tools, and cross-sectional grooving tools, to meet different machining requirements.

[0003] Modern grooving and parting tools not only need to meet the requirements of efficient cutting, but also need to ensure stability and reliability during the machining process. They are typically manufactured from high-strength, wear-resistant materials and precision ground to ensure the sharpness and durability of the cutting edges. Furthermore, to accommodate workpieces of different materials and shapes, a wide variety of grooving tool designs have emerged on the market, including non-standard tools customized for special applications.

[0004] Nevertheless, existing grooving tool technology still has some shortcomings in practical applications. For example, during cutting operations, due to the influence of tool structure and cutting parameters, curled iron chips are easily generated. These chips are difficult to remove from the machining area and may re-enter the workpiece or tool being machined, affecting chip removal efficiency and increasing cleaning difficulty. More seriously, these curled iron chips may scratch or damage the workpiece surface during subsequent machining processes, thereby reducing product quality. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the present invention provides a grooving and cutting tool, which solves the technical problem of easy generation of curled iron filings in the existing grooving and cutting tools.

[0006] According to an embodiment of the present invention, a grooving and cutting tool includes cutting heads disposed at both ends of the tool. The top of the cutting head is provided with an upper positioning surface, and the two cutting heads are provided with side positioning surfaces on opposite sides. The intersection line of the side positioning surface and the upper positioning surface is a cutting edge. The upper positioning surface is provided with a fan-shaped chip groove.

[0007] The fan-shaped chip groove includes an inclined bottom surface and inclined side surfaces disposed on both sides of the inclined bottom surface. The inclined bottom surface is inclined from the cutting edge side towards the bottom of the tool, and the bottoms of the inclined side surfaces on both sides are inclined close to each other.

[0008] The technical principle of this utility model is as follows: After the iron filings are cut off by the cutting edge, they will curl along the inclined bottom surface to form curled iron filings. At the same time, due to the inclined sides on both sides, the iron filings on both sides also curl up close to each other. The iron filings curling up close to each other will destroy the original curled iron filings and form granular iron filings, which will then be quickly discharged.

[0009] Compared with the prior art, this utility model has the following beneficial effects: by using a fan-shaped chip groove in conjunction with a cutting edge, it solves the technical problem of easily generating curled iron chips in existing grooving and cutting tools.

[0010] Furthermore, the upper positioning surface includes a rake face and a V-shaped concave surface, the angle between the rake face and the base surface of the cutter head is a negative angle, and the V-shaped concave surface connects the rake face and the top of the cutter.

[0011] The negative angle design helps to increase the strength of the cutting edge, while the V-shaped concave surface at the rear helps to remove chips.

[0012] Furthermore, the cutter head has transition surfaces on both sides, and an arc surface is provided between the transition surface and the side positioning surface. The intersection line between the arc surface and the upper positioning surface is also the cutting edge.

[0013] Furthermore, the transition surfaces on both sides are inclined towards each other on the side closest to the center of the tool.

[0014] Ensure that the transition surface does not directly contact the workpiece and does not participate in the cutting process.

[0015] Furthermore, the two intersecting lines of the two inclined sides and the rake face gradually move away from each other from the side closest to the cutting edge.

[0016] Furthermore, the lines of intersection between the two inclined sides and the V-shaped concave surface near the rake face gradually become closer to each other and inclined from the side near the rake face.

[0017] This helps the iron filings curl gradually on both sides, making the fracture of the curled iron filings smoother, rather than a sudden break.

[0018] Furthermore, there is an arc transition between the inclined bottom surface and the inclined side surface, an arc transition between the inclined bottom surface and the front cutting surface, and an arc transition between the inclined side surface and the upper positioning surface.

[0019] Furthermore, the top and bottom of the cutting tool are provided with clearance grooves, and the two sides of the clearance grooves are positioning inclined surfaces.

[0020] The positioning inclined surfaces of the upper and lower clearance grooves ensure that the tool holder can firmly hold the tool, guaranteeing good strength and rigidity during machining.

[0021] Furthermore, a connecting surface is provided between the side positioning surface and the tool end face, and the two sides of the connecting surface are circularly transitioned to the transition surface, and the transition surface connects the side positioning surface and the side of the tool. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the grooving and cutting tool structure according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the cutter head structure according to an embodiment of the present utility model.

[0024] Figure 3 This is a front view of the grooving and cutting tools according to an embodiment of the present invention.

[0025] Figure 4 This is a side view of the grooving and cutting tools according to an embodiment of the present invention.

[0026] In the above figures: 100, cutter head; 101, cutting edge; 110, upper positioning surface; 111, rake face; 112, V-shaped concave surface; 120, side positioning surface; 121, arc surface; 130, fan-shaped chip groove; 131, inclined bottom surface; 132, inclined side surface; 140, transition surface; 150, connecting surface; 200, cutting tool; 210, clearance groove; 211, positioning inclined surface; 300, base surface; α, negative angle. Detailed Implementation

[0027] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0028] like Figure 1-2 The cutting and cutting tool shown includes a cutting head 100 at both ends of the tool 200. The top of the cutting head 100 is provided with an upper positioning surface 110. The two cutting heads 100 are provided with a side positioning surface 120 on one side away from each other. The intersection line of the side positioning surface 120 and the upper positioning surface 110 is the cutting edge 101, which is used to cut the workpiece. The upper positioning surface 110 is provided with a fan-shaped chip curling groove 130, which is used for chip curling and chip breaking.

[0029] The specific fan-shaped chip groove 130 includes an inclined bottom surface 131 and inclined side surfaces 132 disposed on both sides of the inclined bottom surface 131. The inclined bottom surface 131 is inclined from the cutting edge 101 to the bottom of the tool 200, and the bottoms of the inclined side surfaces 132 on both sides are close to each other and inclined to achieve chip curling and chip breaking.

[0030] like Figure 1-3As shown, the upper positioning surface 110 includes a front cutting face 111 and a V-shaped concave surface 112. The angle between the front cutting face 111 and the base surface 300 of the cutter head 100 is a negative angle α. The V-shaped concave surface 112 connects the front cutting face 111 and the top of the cutter 200. The function of the V-shaped concave surface 112 is to facilitate the discharge of iron filings from both sides.

[0031] like Figure 1-2 As shown, the two intersecting lines of the two inclined sides 132 and the rake face 111 gradually move away from each other from the side near the cutting edge 101, forming a trumpet shape, so that the iron chips can curl from both sides; the intersecting lines of the two inclined sides 132 and the V-shaped concave surface 112 near the rake face 111 gradually move closer to each other from the side near the rake face 111, forming an inverted trumpet shape, so that the sides of the iron chips can curl further until they break; the above structure ensures that the process of iron chip curling to breakage occurs gradually, and ensures that when the iron chips break, they will not fly around randomly.

[0032] like Figure 1-2 As shown, there is a rounded transition between the inclined bottom surface 131 and the inclined side surface 132, a rounded transition between the inclined bottom surface 131 and the front cutting surface 111, and a rounded transition between the inclined side surface 132 and the upper positioning surface 110. The rounded transition method makes the process of iron chip curling and breaking smoother and reduces the phenomenon of iron chip flying.

[0033] like Figure 1 , 4 As shown, the cutter 200 has clearance grooves 210 at both the top and bottom. The two sides of the clearance grooves 210 are positioning inclined surfaces 211, which are used to fix it on the cutter shank.

[0034] like Figure 1-2 As shown, the tool head 100 has transition surfaces 140 on both sides, and an arc surface 121 is provided between the transition surface 140 and the side positioning surface 120. The intersection line between the arc surface 121 and the upper positioning surface 110 is also the cutting edge 101. The arc surface 121 helps to extend the service life of the tool 200.

[0035] The two transition surfaces 140 are inclined to each other on the side closest to the center of the tool 200 to ensure that the transition surface 140 will not contact the workpiece when grooving or cutting.

[0036] like Figure 1-2 As shown, a connecting surface 150 is also provided between the side positioning surface 120 and the end face of the tool 200. The two sides of the connecting surface 150 are connected to the transition surface 140 by an arc. The transition surface 140 connects the side positioning surface 120 and the side of the tool 200. That is, another function of the connecting surface 150 and the transition surface 140 is to ensure the connection strength between the tool head 100 and the tool 200.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions 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 solutions of this utility model without departing from the spirit and scope of the technical solutions 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 grooving and cutting tool, characterized in that: The tool includes cutting heads at both ends, with an upper positioning surface on the top of each cutting head and side positioning surfaces on opposite sides of each other. The intersection of the side positioning surfaces and the upper positioning surfaces forms a cutting edge, and a fan-shaped chip groove is provided on the upper positioning surface. The fan-shaped chip groove includes an inclined bottom surface and inclined side surfaces disposed on both sides of the inclined bottom surface. The inclined bottom surface is inclined from the cutting edge side towards the bottom of the tool, and the bottoms of the inclined side surfaces on both sides are inclined close to each other.

2. The grooving and cutting tool as described in claim 1, characterized in that: The upper positioning surface includes a front cutting face and a V-shaped concave surface. The angle between the front cutting face and the base surface of the cutting head is a negative angle. The V-shaped concave surface connects the front cutting face and the top of the cutting tool.

3. The grooving and cutting tool as described in claim 1, characterized in that: The cutter head has transition surfaces on both sides, and an arc surface is provided between the transition surface and the side positioning surface. The intersection line between the arc surface and the upper positioning surface is also the cutting edge.

4. A grooving and cutting tool as described in claim 3, characterized in that: The transition surfaces on both sides are inclined towards each other on the side closest to the center of the tool.

5. A grooving and cutting tool as described in claim 2, characterized in that: The two lines of intersection between the two inclined sides and the rake face gradually move away from each other from the side closest to the cutting edge.

6. A grooving and cutting tool as described in claim 2, characterized in that: The lines of intersection between the two inclined sides and the V-shaped concave surface near the rake face gradually approach and incline towards each other from the side near the rake face.

7. A grooving and cutting tool as described in claim 5 or 6, characterized in that: The inclined bottom surface and the inclined side surface have a circular arc transition, the inclined bottom surface and the front cutting surface have a circular arc transition, and the inclined side surface and the upper positioning surface have a circular arc transition.

8. A grooving and cutting tool as described in claim 1, characterized in that: The top and bottom of the cutter are provided with clearance grooves, and the two sides of the clearance grooves are positioning inclined surfaces.

9. A grooving and cutting tool as described in claim 3 or 4, characterized in that: A connecting surface is also provided between the side positioning surface and the end face of the tool. The two sides of the connecting surface are rounded to the transition surface, and the transition surface connects the side positioning surface and the side of the tool.

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