Cross-shaped alloy tool bit with improved powder discharging and cutting performance
By designing multiple transition surfaces and optimized grooves on the cross alloy cutting head, the problems of poor chip removal, large cutting resistance, poor impact resistance and heat accumulation are solved, and more efficient cutting performance and longer service life are achieved.
Patent Information
- Application Number
- CN202422178704.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-05
AI Technical Summary
In the high-speed or complex cutting conditions, existing cross-alloy cutting heads have problems such as poor chip removal, large cutting resistance, poor impact resistance and rapid wear due to heat accumulation.
An improved cross-alloy cutter head is designed, using multiple transition surfaces and an optimized first groove and a second groove, combining a specific height and arc-shaped transition surface, optimizing the mechanical distribution and chip removal path during the cutting process.
Through this design, the tool achieves chip removal smoothly during the cutting process, reduces chip accumulation and blockage, reduces cutting resistance, improves impact resistance and heat dissipation ability, and significantly extends the tool's service life.
Smart Images
Figure CN223028507U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metal cutting tools, in particular to a cross-shaped alloy tool bit for improving chip evacuation and cutting performance. Background Art
[0002] The cross-shaped alloy tool bit is a commonly used cutting tool in metal processing, widely used in machining scenarios such as turning, milling, and drilling. Its core function is to achieve efficient cutting and chip evacuation of metal materials through the cooperation of the main cutting edge and the secondary cutting edge.
[0003] Existing tool bits usually adopt a simple groove and cutting edge design, guiding chips away from the cutting area through the grooves to reduce the interference of chips on the tool and the workpiece surface. However, in actual applications, especially under high-speed or complex cutting conditions, these tool bits often have problems such as poor chip evacuation, high cutting resistance, and rapid tool wear, seriously affecting machining efficiency and accuracy.
[0004] To solve the problem of poor chip evacuation, traditional tool designs often enhance the chip evacuation ability by deepening or lengthening the grooves. However, deepening or lengthening the grooves easily weakens the overall strength of the tool, making the tool more prone to damage during high-load cutting. In addition, deep grooves cause unstable chip evacuation during high-speed cutting, and stress concentration during the cutting process is more obvious, resulting in a decrease in the impact resistance of the tool, and prone to problems such as chipping and cracking.
[0005] To address the above problems, the industry usually improves the chip evacuation effect by adding multiple auxiliary cutting edges or modifying the groove shape. However, such improvements increase the manufacturing complexity and cost of the tool, and still cannot fundamentally solve the problem of heat accumulation during the cutting process. The design of traditional tools lacks optimization of heat management. During the cutting process, the tool temperature rises rapidly, resulting in increased thermal expansion and wear, further reducing the service life and machining stability of the tool.
[0006] In addition, the simple plane transition method commonly used in the prior art easily forms stress concentration points, affecting the impact resistance of the tool, especially obvious during interrupted cutting or machining of irregular workpieces. This design deficiency causes the tool to be prone to chipping during high-speed cutting, even resulting in tool damage and a decrease in the surface quality of the workpiece, making it difficult to improve the production efficiency and product qualification rate of enterprises.
[0007] Therefore, how to improve the chip evacuation ability of the tool, enhance the impact resistance, and optimize the heat management during the cutting process has become the technical problem to be solved by the present utility model. Summary of the Utility Model
[0008] The technical problem solved by the utility model is to provide a cross-shaped alloy tool bit with improved powder discharging and cutting performance to solve the problems of poor chip discharging, poor impact resistance, fast tool wear caused by heat accumulation, and low cutting efficiency of the tool in the above-mentioned prior art in view of the defects existing in the above-mentioned prior art.
[0009] To solve the above technical problems, the technical solution adopted by the utility model is as follows:
[0010] A cross-shaped alloy tool bit with improved powder discharging and cutting performance, including a main cutting edge and a secondary cutting edge that is perpendicular to the main cutting edge to form a cross shape. The secondary cutting edge includes a secondary first cutting edge and a secondary second cutting edge, and the secondary first cutting edge and the secondary second cutting edge respectively include a left side and a right side;
[0011] At positions close to the main cutting edge on the secondary first cutting edge and the secondary second cutting edge, a first groove and a second groove are respectively provided. The first groove and the second groove respectively penetrate the left side and the right side of the secondary first cutting edge and the secondary second cutting edge;
[0012] The maximum groove length of the first groove and the second groove is within 40% of the total length of the main cutting edge;
[0013] The main cutting edge includes a drilling surface, and a tapered end is provided at the center of the drilling surface;
[0014] The first groove and the second groove respectively include a groove bottom, and the maximum height from the groove bottom of the first groove and the second groove to the end is within 50% of the total height of the main cutting edge;
[0015] The maximum distance between the secondary first cutting edge and the secondary second cutting edge is less than the maximum length of the main cutting edge.
[0016] As a further scheme of the utility model, the secondary first cutting edge and the secondary second cutting edge respectively include a cutting surface. There is a first transition surface between the groove bottom of the first groove and the cutting surface of the secondary first cutting edge, and there is a second transition surface between the groove bottom of the first groove and the main cutting edge.
[0017] As a further scheme of the utility model, the maximum distance between the secondary first cutting edge and the secondary second cutting edge is 0.3 mm - 0.7 mm shorter than the maximum length of the main cutting edge.
[0018] As a further scheme of the utility model, the first transition surface and the second transition surface are respectively arc surfaces.
[0019] As a further scheme of the utility model, the secondary first cutting edge and the secondary second cutting edge respectively include a cutting surface. There is a third transition surface between the groove bottom of the second groove and the cutting surface of the secondary second cutting edge, and there is a fourth transition surface between the groove bottom of the second groove and the main cutting edge.
[0020] As a further solution of the utility model, the third transition surface and the fourth transition surface are arc surfaces respectively.
[0021] As a further solution of the utility model, the main cutting edge and the secondary cutting edge are an integrated structure.
[0022] As a further solution of the utility model, the maximum distance between the auxiliary first cutting edge and the auxiliary second cutting edge is 0.3mm-0.7mm shorter than the maximum length of the main cutting edge.
[0023] Compared with the prior art, the beneficial effects of the utility model are:
[0024] 1. Through the coordination of multiple transition surfaces, the first groove, the second groove and the characteristic height, the tool can achieve smooth chip removal during the cutting process, effectively reducing chip accumulation and blockage. The design of the groove not only accurately controls the length and height ratio, but also cleverly combines the transition surface to optimize the mechanical distribution and chip removal path during the cutting process, greatly improving the chip removal performance of the tool and avoiding the common chip removal problem in the prior art.
[0025] 2. The ingenious layout of the grooves and transition surfaces greatly reduces the friction resistance during the cutting process, making the cutting smoother while maintaining the strength and durability of the tool. Traditional technologies often cause insufficient tool strength or poor chip removal due to grooves that are too deep or too shallow. This design ensures the stability of the tool and efficient chip removal under high load conditions under the precise control of the groove depth and length.
[0026] 3. The transition surface design effectively alleviates the stress concentration problem during cutting, making the tool more impact-resistant during high-speed cutting and intermittent cutting. The combination of multiple transition surfaces and grooves not only enhances the overall rigidity of the tool, but also reduces the risk of damage caused by force concentration, and increases the tool life under complex processing conditions, reflecting significant technical advantages.
[0027] 4. Reasonable configuration of groove height not only optimizes the chip removal path of the tool, but also significantly improves the heat dissipation capacity of the tool, effectively reducing the accumulation of heat during the cutting process. Compared with the low heat dissipation efficiency of traditional tools, this design achieves better heat dispersion and discharge through precise matching of height and transition surface, reduces the impact of thermal expansion and contraction on tool accuracy and life, and maintains the excellent performance of the tool under high temperature conditions.
[0028] 5. Through the synergistic effect of the first groove, the second groove and multiple transition surfaces, the overall cutting effect of the tool is greatly improved, with smooth chip removal, small cutting resistance and low heat accumulation, which provides a guarantee for an efficient and stable processing process.
[0029] 6. The total length of the secondary first cutting edge and the secondary second cutting edge is 0.3 mm - 0.7 mm shorter than the total length of the main cutting edge, reducing the frictional resistance of the tool during cutting and significantly improving the cutting speed of the tool. Compared with traditional tools with large frictional resistance and slow cutting speed, this design achieves the effect of less cutting frictional resistance and faster cutting speed through different cutting edge lengths.
[0030] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0032] Figure 1 It is a schematic structural diagram of the present utility model.
[0033] Figure 2 It is a front view structural schematic diagram of the present utility model.
[0034] The reference numerals and names in the drawings are as follows:
[0035] Main cutting edge 1, secondary cutting edge 2, secondary first cutting edge 3, secondary second cutting edge 4, first groove 5, second groove 6, drilling surface 7, end 8, cutting surface 9, first transition surface 10, second transition surface 11, third transition surface 12 and fourth transition surface 13. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0037] Please refer to Figure 1—2, in the embodiment of the present utility model, a cross-shaped alloy tool bit for improving powder discharging and cutting performance includes a main cutting edge 1 and a secondary cutting edge 2 that is perpendicularly arranged to the main cutting edge 1 to form a cross shape. The secondary cutting edge 2 includes a secondary first cutting edge 3 and a secondary second cutting edge 4. The secondary first cutting edge 3 and the secondary second cutting edge 4 respectively include a left side and a right side; first grooves 5 and second grooves 6 are respectively arranged at positions close to the main cutting edge 1 on the secondary first cutting edge 3 and the secondary second cutting edge 4. The first grooves 5 and the second grooves 6 respectively penetrate the left side and the right side of the secondary first cutting edge 3 and the secondary second cutting edge 4.
[0038] The groove lengths of the first grooves 5 and the second grooves 6 are within 40% of the total length of the main cutting edge 1; and the transition part, which also belongs to a part of the groove length, is an extended implementation manner known to those of ordinary skill in the art; the main cutting edge 1 includes a drilling surface 7, and a tapered end 8 is provided at the center of the drilling surface 7; the maximum distance between the secondary first cutting edge and the secondary second cutting edge is less than the maximum length of the main cutting edge. Preferably, the maximum straight-line distance between the secondary first cutting edge 3 and the secondary second cutting edge 4 is 0.3 mm - 0.7 mm shorter than the maximum straight-line length of the main cutting edge 1; the frictional resistance during the cutting process of the tool is reduced, and the cutting speed of the tool is significantly improved. Compared with the traditional tool with large frictional resistance and slow cutting speed, this design achieves the effect of less cutting frictional resistance and faster cutting speed through different cutting edge lengths; wherein, the maximum distance between the secondary first cutting edge 3 and the secondary second cutting edge 4 refers to the maximum straight-line distance between the end of the secondary first cutting edge 3 far from the secondary second cutting edge 4 and the end of the secondary second cutting edge 4 far from the secondary first cutting edge 3; the first grooves 5 and the second grooves 6 respectively include groove bottoms, and the height of the groove bottoms of the first grooves 5 and the second grooves 6 from the end 8 is within 50% of the total height of the main cutting edge 1. The secondary first cutting edge 3 and the secondary second cutting edge 4 respectively include cutting surfaces 9. There is a first transition surface 10 between the groove bottom of the first groove 5 and the cutting surface 9 of the secondary first cutting edge 3, and there is a second transition surface 11 between the groove bottom of the first groove 5 and the main cutting edge.
[0039] The first transition surface 10 and the second transition surface 11 are respectively arc surfaces. The secondary first cutting edge 3 and the secondary second cutting edge 4 respectively include cutting surfaces 9. There is a third transition surface 12 between the groove bottom of the second groove 6 and the cutting surface 9 of the secondary second cutting edge 4, and there is a fourth transition surface 13 between the groove bottom of the second groove 6 and the main cutting edge. The third transition surface 12 and the fourth transition surface 13 are respectively arc surfaces. The main cutting edge 1 and the secondary cutting edge 2 are of an integral structure.
[0040] Example 1:
[0041] This embodiment introduces the application of a cross-shaped alloy tool bit in an actual machining scenario. Through the optimized groove and transition surface design, it effectively solves the problems of poor chip evacuation, large cutting resistance, poor impact resistance, and heat accumulation proposed in the background technology, significantly improving the cutting performance and service life of the tool.
[0042] In this embodiment, the cross-shaped alloy tool bit is mainly used in the turning machining scenario of high-strength steel. When traditional tools machine such materials, problems such as fast tool wear and poor cutting surface quality often occur due to large cutting resistance and poor chip evacuation, especially in high-speed cutting and interrupted cutting. To solve these problems, this application adopts an improved cross-shaped alloy tool bit, and its main technical solution is: based on the cooperation of the main cutting edge 1 and the secondary cutting edge 2, through the optimized combination design of multiple transition surfaces, the first groove 5 and the second groove 6, the tool shows excellent performance in high-strength cutting.
[0043] Specifically, the first groove 5 and the second groove 6 of the alloy tool bit are arranged on the secondary cutting edge 2. The groove length is controlled within 40% of the total length of the main cutting edge 1, and the height of the groove bottom from the end 8 of the main cutting edge 1 is controlled within 50% of the total height. Through this design, the groove can effectively guide the chips to be quickly discharged during cutting, avoiding the accumulation and blockage of chips in the cutting area, significantly reducing the cutting resistance, and making the cutting process smoother. In addition, the length and depth ratio of the groove are precisely controlled to ensure the overall strength and rigidity of the tool during high-speed cutting, enabling it to continuously work under high-load conditions and avoiding the problem of weakened structural strength caused by too deep grooves in traditional tools.
[0044] During the application process, through the cooperation of multiple transition surfaces and grooves, not only the chip evacuation ability of the tool is enhanced, but also the stress distribution is optimized, effectively alleviating the stress concentration during cutting. The transition surface adopts an arc design, forming a smooth transition with the groove and the cutting edge. This design greatly reduces the impact force of the tool during interrupted cutting or machining of irregular workpieces in actual use, improves the impact resistance, and avoids the chipping and fracture phenomena of traditional tools caused by sudden changes in cutting force.
[0045] In addition, the tool design in this embodiment also significantly improves the heat dissipation effect during cutting. Through the ingenious combination of the groove and the transition surface, the heat generated during cutting can be quickly dissipated from the tool surface, effectively reducing the tool temperature and minimizing the impact of thermal expansion on cutting accuracy and tool life. In actual applications, the tool can still maintain a relatively low temperature even under the machining conditions of high speed and large feed rate, avoiding the problem of increased tool wear caused by overheating, thus significantly extending the service life of the tool.
[0046] Through the above design and improvement, the cross-shaped alloy tool bit in this embodiment exhibits more excellent cutting performance than traditional tools in practical applications. The chip evacuation is smoother, the cutting resistance is significantly reduced, and at the same time, the impact resistance and heat resistance of the tool are greatly improved. Compared with the prior art, this design solves multiple problems in cutting high-strength materials and achieves a significant improvement in machining efficiency and workpiece surface quality.
[0047] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0048] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model.
Claims
1. A cross-shaped alloy cutter head with improved powder removal and cutting performance, comprising a main cutting edge and a secondary cutting edge arranged perpendicularly to the main cutting edge to form a cross shape, wherein the secondary cutting edge comprises a secondary first cutting edge and a secondary second cutting edge, and is characterized in that: The auxiliary first cutting edge and the auxiliary second cutting edge include a left side and a right side respectively; A first groove and a second groove are respectively arranged on the auxiliary first cutting edge and the auxiliary second cutting edge at positions close to the main cutting edge, and the first groove and the second groove respectively penetrate the left side and the right side of the auxiliary first cutting edge and the auxiliary second cutting edge; The maximum groove length of the first groove and the second groove is within 40% of the total length of the main cutting edge; The main cutting edge includes a drilling surface, and a tapered end portion is provided at the center of the drilling surface; The first groove and the second groove respectively include groove bottoms, and the maximum height of the groove bottoms of the first groove and the second groove from the end is within 50% of the total height of the main cutting edge; The maximum distance between the secondary first cutting edge and the secondary second cutting edge is smaller than the maximum length of the main cutting edge.
2. A cross-shaped alloy cutter head with improved powder removal and cutting performance according to claim 1, characterized in that: The auxiliary first cutting edge and the auxiliary second cutting edge respectively include cutting surfaces, a first transition surface is provided between the groove bottom of the first groove and the cutting surface of the auxiliary first cutting edge, and a second transition surface is provided between the groove bottom of the first groove and the main cutting edge.
3. A cross-shaped alloy cutter head with improved powder removal and cutting performance according to claim 1, characterized in that: The maximum distance between the auxiliary first cutting edge and the auxiliary second cutting edge is 0.3 mm to 0.7 mm shorter than the maximum length of the main cutting edge.
4. A cross-shaped alloy cutter head with improved powder removal and cutting performance according to claim 2, characterized in that: The first transition surface and the second transition surface are arc surfaces respectively.
5. A cross-shaped alloy cutter head with improved powder removal and cutting performance according to claim 2, characterized in that: The auxiliary first cutting edge and the auxiliary second cutting edge respectively include cutting surfaces, a third transition surface is provided between the groove bottom of the second groove and the cutting surface of the auxiliary second cutting edge, and a fourth transition surface is provided between the groove bottom of the second groove and the main cutting edge.
6. A cross-shaped alloy cutter head with improved powder removal and cutting performance according to claim 5, characterized in that: The third transition surface and the fourth transition surface are arc surfaces respectively.
7. A cross-shaped alloy cutter head with improved powder removal and cutting performance according to claim 1, characterized in that: The main cutting edge and the secondary cutting edge are an integrated structure.