Strong turning tool bar with three-side leaning positions

Abstract

The utility model discloses a strong turning tool bar with three-side leaning positions, and aims to solve the problems that in the prior art, a tool position shakes and a tool is not wear-resistant due to the fact that a blade is stressed unevenly. The three-side abutting turning tool positioning notch grooves are formed in the clamping end of the turning tool rod body to be matched with the blade, so that cutting force, feeding force and transverse thrust are effectively dispersed, and the blade is prevented from loosening or shifting. The three-point supporting design is based on the mechanical lever principle, under the sudden change of cutting force or the interference of the machining environment, the blade can still be kept stable, the machining precision and the durability of the cutter are remarkably improved, the service life is prolonged, the maintenance cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, in particular to a strong turning tool bar with three-side support. Background Art

[0002] Turning, a crucial machining process, is widely used in the precision machining of metal parts. During turning, a turning tool is secured to the machine tool via a toolholder and, while rotating or feeding at high speed, cuts the material to form the desired workpiece shape. Tool stability is crucial to machining accuracy and tool durability, making its mounting method and structural design a core technical aspect of turning.

[0003] Currently, toolholders primarily utilize tool mounting slots within the toolholder body to secure the tool within the slots. The toolholder is connected to the toolholder via bolts or a clamping structure, and during the cutting process, it withstands multi-directional forces from cutting forces, feed forces, and lateral thrust. However, in practice, existing technologies often suffer from several deficiencies. In particular, insufficient support in the direction in which the tool is subjected to force can lead to loosening or displacement of the toolholder, compromising machining accuracy and tool life.

[0004] Generally, there are several common methods for fixing turning tools in the prior art:

[0005] 1. Traditional one-way support: In existing toolholder designs, the force applied to the turning tool is typically limited to a few support points. This lacks sufficient support in the direction where the cutting force primarily acts. For example, during installation, the turning tool is often secured by support on only one or two sides. Under high-speed cutting or heavy load conditions, this one-way support causes the cutting force to act like a lever on the tool's fixed position, causing it to loosen or slightly shift, resulting in reduced machining accuracy.

[0006] 2. Multi-point clamping structure: To address the problem of tool loosening, some technical solutions use a multi-point clamping structure to increase the tool's fixed stability. However, this type of clamping structure relies on additional mechanical devices, such as adding additional clamping components or more complex connection structures. Although this improves the fixation of the tool 7 to a certain extent, it also brings other disadvantages. Multi-point clamping increases the complexity of the structure, resulting in increased tool arbor manufacturing costs. Uneven clamping force can also lead to unbalanced force on the tool, causing the tool 7 to continue to wobble under the action of cutting forces.

[0007] 3. Enhanced bolt fixation: Some technical solutions improve the stability of the turning tool by enhancing bolt fixation and reduce the risk of loosening during the force application process. However, bolt fixation still has the problem of metal fatigue during high-load cutting processes, especially during long-term and high-speed cutting. The long-term force on the bolts can easily lead to loosening. Especially when there is insufficient support in the force direction, the turning tool will still be pushed and cause shaking or displacement, thus affecting the machining accuracy and increasing the tool wear.

[0008] Therefore, how to provide a turning tool shank structure that can effectively disperse the cutting force and ensure that the turning tool remains stable and does not shake under multi-directional force has become the technical problem to be solved by this utility model. Summary of the Utility Model

[0009] The technical problem solved by this utility model is to provide a strong turning tool shank with three-side positioning against a defect existing in the above-mentioned prior art, so as to solve the problems of loosening, displacement and non-wear-resistant tool caused by uneven force on the turning tool 7 in the above background art.

[0010] To solve the above technical problem, the technical solution adopted by this utility model is as follows:

[0011] A strong turning tool shank with three-side positioning against includes a turning tool shank body. The turning tool shank body includes a clamping end. This strong turning tool shank with three-side positioning against also includes a three-side positioning turning tool notch groove that cooperates with the turning tool;

[0012] The clamping end of the turning tool shank body is provided with a three-side positioning turning tool notch groove. The three-side positioning turning tool notch groove includes 3 groove side walls and 1 groove notch;

[0013] The 3 groove side walls respectively form a first side positioning against, a second side positioning against and a third side positioning against;

[0014] The turning tool includes at least 3 sides. At least 3 sides of the turning tool respectively form a first positioning surface against, a second positioning surface against and a third positioning surface against;

[0015] When the turning tool is fixedly arranged on the three-side positioning turning tool notch groove, the first positioning surface against, the second positioning surface against and the third positioning surface against of the turning tool are respectively in limit cooperation with the first side positioning against, the second side positioning against and the third side positioning against.

[0016] As a further solution of this utility model, that the turning tool is fixedly arranged on the three-side positioning turning tool notch groove means that after the turning tool is clamped on the three-side positioning turning tool notch groove by a clamping connection method, the top of the turning tool is fixedly connected with the turning tool shank body by a bolt connection method.

[0017] As a further solution of the present utility model, a mounting hole penetrating through the top and bottom of the turning tool is provided on the turning tool, and a threaded hole matching with the mounting hole is provided on the three-side positioning notch groove of the turning tool, and a bolt matching with the threaded hole passes through the mounting hole on the turning tool and is threadedly connected with the threaded hole.

[0018] As a further solution of the present utility model, the mounting hole is located in the middle of the turning tool.

[0019] As a further solution of the present utility model, the shape of the turning tool is a four-corner rhombus.

[0020] As a further solution of the present utility model, the three-side positioning notch groove of the turning tool includes a corner position, and an avoidance notch is provided at the corner position of the three-side positioning notch groove of the turning tool.

[0021] As a further solution of the present utility model, the shape of the avoidance notch is an arc.

[0022] As a further solution of the present utility model, the said limit fit means that two of the first abutting surface, the second abutting surface and the third abutting surface of the turning tool are in close fit with two of the first side abutting position, the second side abutting position and the third side abutting position; and there is a small-gap fit between the other abutting surface except the two abutting surfaces and the other abutting position except the two side abutting positions.

[0023] As a further solution of the present utility model, the said small gap means a gap between 0.015 - 0.025 mm.

[0024] As a further solution of the present utility model, the said small gap specifically means a gap of 0.02 mm.

[0025] Compared with the prior art, the beneficial effects of the present utility model are:

[0026] 1. By introducing a three-side abutting structure and based on the principle of mechanical lever, the problems of tool position shaking and tool non-wear resistance caused by uneven force on the turning tool in the prior art are effectively solved. Specifically, in the traditional turning tool bar, the turning tool is only supported in some directions, and due to the single-point action of the cutting force during the cutting process, it is easy to cause the turning tool 7 to loosen and displace, resulting in reduced machining accuracy. While in this application, through the design of three-point abutting, it is ensured that the turning tool 7 is uniformly supported and restricted in three directions, so that it still remains stable and immovable under the multi-directional action of the cutting force.

[0027] 2. During the cutting process, the turning tool is subjected to forces from different directions, such as cutting force, feed force, and lateral thrust. If the turning tool is supported in only relatively few directions, the cutting force, like a lever, will pry the turning tool through the fulcrum, causing the turning tool to loosen or even displace, resulting in machining errors and tool wear. The three-sided positioning structure, by providing three-point stable support, just like three fixed lever fulcrums, can disperse and balance the cutting force. Even if the cutting force suddenly changes during the machining process, or the cutting direction is interfered by the outside world (such as vibration or wind force in the machining environment), the turning tool can still withstand the thrust at one point and the other two points provide constraints, thus preventing the turning tool from shaking due to external forces and ensuring the stability and accuracy of cutting.

[0028] 3. This three-point positioning structure effectively prevents the turning tool from generating minute displacements or metal fatigue due to uneven forces in multiple directions during use, extending the service life of the tool. This innovative design not only enhances the wear resistance of the tool but also significantly reduces the failure rate caused by tool loosening or displacement, reduces the cost of frequent tool replacement and downtime, and further improves the machining efficiency.

[0029] 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

[0030] 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.

[0031] Figure 1 It is a schematic structural diagram of the two force-receiving side positions of the present prior art.

[0032] Figure 2 For Figure 1 the three-dimensional schematic diagram of the turning tool bar body in

[0033] Figure 3 It is a schematic structural diagram of the present utility model.

[0034] Figure 4 For Figure 3 the schematic structural diagram of the turning tool from another perspective in

[0035] Figure 5 It is a schematic structural diagram of the positioning notch groove of the three-sided positioning turning tool.

[0036] Figure 6It is a structural schematic diagram of a turning tool that matches the positioning notch groove of a three-side abutting turning tool.

[0037] The reference numerals and names in the figure are as follows:

[0038] Turning tool bar body 1, clamping end 2, three-side abutting turning tool positioning notch groove 3, first side abutting 4, second side abutting 5, third side abutting 6, turning tool 7, first abutting surface 8, second abutting surface 9, third abutting surface 10, avoidance notch 11, part 12, mounting hole 13, threaded hole 14 and bolt 15. Specific implementation manner

[0039] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] Please refer to Figure 1 —6. In the embodiment of the present invention, a strong turning tool bar with three-side abutting includes a turning tool bar body 1. The turning tool bar body 1 includes a clamping end 2. The strong turning tool bar with three-side abutting further includes a three-side abutting turning tool positioning notch groove 3 that cooperates with the turning tool 7. The clamping end 2 of the turning tool bar body 1 is provided with a three-side abutting turning tool positioning notch groove 3. The three-side abutting turning tool positioning notch groove 3 includes 3 groove side walls and 1 groove notch. The 3 groove side walls respectively form a first side abutting 4, a second side abutting 5, and a third side abutting 6. The turning tool 7 includes at least 3 side surfaces. The at least 3 side surfaces of the turning tool 7 respectively form a first abutting surface 8, a second abutting surface 9, and a third abutting surface 10.

[0041] When the turning tool 7 is fixedly arranged on the three-side abutting turning tool positioning notch groove 3, the first abutting surface 8, the second abutting surface 9, and the third abutting surface 10 of the turning tool 7 are respectively in limit cooperation with the first side abutting 4, the second side abutting 5, and the third side abutting 6. The turning tool 7 being fixedly arranged on the three-side abutting turning tool positioning notch groove 3 means that after the turning tool 7 is clamped on the three-side abutting turning tool positioning notch groove 3 by a clamping connection method, the top of the turning tool 7 is fixedly connected to the turning tool bar body 1 by a bolt connection method.

[0042] The turning tool 7 is provided with a mounting hole penetrating through the top and bottom of the turning tool 7. The three-sided positioning notch groove 3 of the turning tool is provided with a threaded hole 14 that cooperates with the mounting hole 13. A bolt 15 that cooperates with the threaded hole passes through the mounting hole on the turning tool 7 and is threadedly connected to the threaded hole 14. The mounting hole 13 is located in the middle of the turning tool 7. The shape of the turning tool 7 is a four-corner rhombus. The three-sided positioning notch groove 3 of the turning tool includes a corner position, and an avoidance notch 11 is provided at the corner position of the three-sided positioning notch groove 3 of the turning tool. The shape of the avoidance notch 11 is an arc.

[0043] The limit fit means that two of the first contact surface 8, the second contact surface 9, and the third contact surface 10 of the turning tool are in close fit with two of the first side contact 4, the second side contact 5, and the third side contact 6; and the other contact surface except the two contact surfaces has a small clearance fit with the other contact position except the two side contacts; the small clearance refers to the clearance between 0.015 - 0.025 mm, preferably 0.02 mm; to avoid the problem that it is not conducive to clamping when all three surfaces are in close contact, and to reduce the manufacturing difficulty.

[0044] Embodiment 1:

[0045] In the production environment of turning processing, especially in the processing of high-precision metal parts, the stable installation of the turning tool 7 has a crucial impact on the processing accuracy and product quality. Taking the turning processing of a certain metal bearing seat as an example, the workpiece material is high-hardness steel, and the processed surface is required to have extremely high surface finish and dimensional accuracy. Refer to Figure 1 , when turning the part 12, the turning tool 7 on the existing turning tool bar body 1 has two stress side points, namely point A and point B. In such processing tasks, the turning tool 7 needs to bear large cutting forces, feed forces, and lateral thrusts. If the turning tool 7 is not installed stably enough, it is very easy to generate slight vibrations, resulting in errors on the processed surface or increased tool wear.

[0046] The existing turning tool bar design usually uses a single-sided or double-sided support method to fix the turning tool 7. Although it can meet the processing requirements of general workpieces, in the processing of high-hardness workpieces, the support of the turning tool 7 in the stress direction is insufficient. Especially in high-speed cutting, due to the multi-directional action of the cutting force, the turning tool 7 is prone to small displacements during the stress process. Such displacements are often difficult to detect in time, resulting in slight friction between the turning tool 7 and the workpiece, weakening the wear resistance of the tool, and ultimately affecting the processing accuracy.

[0047] To solve this problem, this embodiment adopts a strong tool bit bar with three-sided positioning. By providing a three-sided positioning notch groove at the clamping end 2 of the tool bit bar body, the force support of the tool bit 7 in multiple directions is effectively improved, ensuring that the tool bit 7 remains stable and does not shake even under the combined action of cutting force, feed force, and lateral thrust during turning.

[0048] In specific operations, the three sides of the tool bit 7 are respectively in limit fit with the three-sided positioning surfaces in the positioning notch groove. When the turning force acts on the tool bit 7, the first side positioning 4 bears the main cutting force direction, while the second and third side positionings 6 respectively provide additional support for the tool bit 7 to prevent the cutting force from prying the tool bit 7 through the lever effect. Especially during the cutting process, the feed force and lateral thrust often cause a slight displacement of the tool bit 7 in the non-cutting direction. The three-sided positioning design can provide balanced support in different directions, avoiding the problem of tool bit 7 loosening caused by insufficient single-sided or double-sided support in the prior art.

[0049] When machining this high-hardness bearing seat, through the tool bit bar structure with three-sided positioning, the tool bit 7 maintains extremely high stability during high-speed rotation. Even during the machining process, when the cutting force or feed force suddenly changes, or external environments such as vibration and wind affect the tool, the three-point positioning structure can still ensure that the tool bit 7 is effectively supported, avoiding the shaking or slight displacement of the tool bit 7. Compared with the traditional tool bit bar design, the tool in this embodiment has remarkable anti-shaking ability, ensuring the machining accuracy and the surface finish of the machined surface.

[0050] In addition, the tool bit 7 is fixed in the three-sided positioning groove by a clamping method and further fixed by bolts, providing a more stable connection method. Even under high-load cutting conditions, the tool bit 7 will not loosen or shift due to metal fatigue, greatly extending the service life of the tool. During the machining process, workers do not need to frequently stop the machine to replace the tool bit 7, thereby improving production efficiency and reducing downtime losses.

[0051] Through the above method, this embodiment not only effectively solves the problem of tool bit 7 loosening under multi-directional forces, but also significantly improves the durability and machining accuracy of the tool. Under the condition that all other machining conditions remain unchanged, the three-sided positioning structure provides more balanced force support, enabling the tool bit 7 to remain stable even under high-speed and heavy-load conditions, thereby achieving the purpose of improving production efficiency and product quality.

[0052] This embodiment shows that the innovative design of three-sided positioning in high-intensity and high-precision turning machining demonstrates unexpected technical effects. Compared with the existing unidirectional or bidirectional support structures, the three-sided positioning disperses the cutting force through a clever mechanical principle, avoiding the displacement and wear problems of the turning tool 7 caused by uneven force, providing an ideal solution for the machining of high-precision workpieces, greatly extending the service life of the tool, and further reducing the maintenance and replacement costs.

[0053] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection" and the like 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.

[0054] 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-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to encompass all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model.

Claims

1. A strong turning tool bar with three-side resting positions, comprising a turning tool bar body, the turning tool bar body including a clamping end, characterized in that: The strong turning tool bar with three-side seating positions further includes a three-side seating turning tool positioning notch groove that mates with the turning tool; The clamping end of the turning tool bar body is provided with a three-side seating turning tool positioning notch groove, and the three-side seating turning tool positioning notch groove includes 3 groove side walls and 1 groove notch; The 3 groove side walls respectively form a first side seating position, a second side seating position, and a third side seating position; The turning tool includes at least 3 sides, and at least 3 sides of the turning tool respectively form a first seating surface, a second seating surface, and a third seating surface; When the turning tool is fixedly arranged on the three-side seating turning tool positioning notch groove, the first seating surface, the second seating surface, and the third seating surface of the turning tool are respectively in limiting cooperation with the first side seating position, the second side seating position, and the third side seating position.

2. The strong turning tool shank with three-side leaning positions according to claim 1, characterized in that, The turning tool being fixedly arranged on the three-side seating turning tool positioning notch groove means that after the turning tool is clamped on the three-side seating turning tool positioning notch groove by a clamping connection method, the top of the turning tool is fixedly connected to the turning tool bar body by a bolt connection method.

3. The strong turning tool shank with three-side resting positions according to claim 2, characterized in that The turning tool is provided with a mounting hole penetrating through the top and bottom of the turning tool, and the three-side seating turning tool positioning notch groove is provided with a threaded hole that mates with the mounting hole, and a bolt that mates with the threaded hole passes through the mounting hole on the turning tool and is threadedly connected to the threaded hole.

4. The strong turning tool bar with three-side leaning positions according to claim 3, characterized in that, The mounting hole is located in the middle of the turning tool.

5. A strong turning tool shank with three-side leaning positions according to claim 1, characterized in that The shape of the turning tool is a four-corner rhombus.

6. The strong turning tool shank with three-side leaning positions according to claim 1, characterized in that, The three-side seating turning tool positioning notch groove includes a corner position, and an avoidance notch is provided at the corner position of the three-side seating turning tool positioning notch groove.

7. The strong turning tool bar with three-side leaning positions according to claim 6, characterized in that, The shape of the avoidance notch is an arc.

8. A strong turning tool shank with three-side leaning positions according to claim 7, characterized in that, The said limiting cooperation means that two of the first seating surface, the second seating surface, and the third seating surface of the turning tool are in close cooperation with two of the first side seating position, the second side seating position, and the third side seating position; and the other seating surface except the two seating surfaces has a small-gap cooperation with the other seating position except the two side seating positions.

9. The strong turning tool shank with three-side resting positions according to claim 8, characterized in that, The said small gap means a gap between 0.015 - 0.025 mm.

10. The strong turning tool shank with three-side leaning positions according to claim 9, characterized in that, The said small gap specifically means a gap of 0.02 mm.

Images