Quick locking turning tool bar

Abstract

The utility model discloses a quick locking turning tool bar which is characterized in that a first annular inclined surface and a second annular inclined surface are arranged in a staggered manner, so that multi-directional stress is realized, single-point stress in a locking process is effectively dispersed, a stress concentration phenomenon is avoided, and locking firmness and safety are remarkably improved. A traditional square column limiting mode is changed into a cylindrical design, the stress area is larger and more uniform, the fit clearance is smaller, and the stability in the X direction, the Y direction and the Z direction is ensured. The cylindrical design not only improves the structural strength, but also reduces the problem of looseness caused by untight matching.

Description

Technical Field

[0001] The utility model relates to the technical field of machining tools, in particular to a quick-locking tool shank for turning tools. Background Art

[0002] In the field of machining, a tool shank is an important tool for clamping and fixing a cutting blade, usually used for turning operations. The structures of traditional tool shanks mostly adopt vertical plane contact positioning and square columns for limiting. Such a design has many problems in practical applications.

[0003] 1. Disadvantages of vertical plane contact positioning:

[0004] During the locking process of traditional tool shanks, simple contact positioning is usually adopted. In this design, during the locking process, the stress points are concentrated, which easily leads to stress concentration, affecting the firmness and safety of locking. Single-point stress may cause the cutting blade to displace or loosen during high-intensity machining, affecting machining accuracy and effect.

[0005] 2. Problems with square column limiting:

[0006] In traditional designs, square columns are often used for limiting. However, the stress-bearing area of the square column is relatively small, and its directivity and stability in the X, Y, and Z directions are poor. The square column is weak in volume and is prone to deformation or wear during the stress process, further resulting in unreliable locking and increasing the uncertainty and risk during the operation process.

[0007] 3. Complexity of traditional locking structures:

[0008] The structure of the traditional pressing plate is complex and requires multiple clamping and machining or machining using a five-axis CNC, which not only increases the machining cost but also reduces the production efficiency. At the same time, the clearance between the square column and the tool shank is relatively large, which easily causes loosening or displacement during the locking process, affecting the stability and reliability of machining.

[0009] Therefore, how to achieve multi-directional stress, disperse the single-point stress during the locking process, avoid stress concentration, and improve the firmness and safety of locking has become the technical problem to be solved by the present utility model. Summary of the Utility Model

[0010] The technical problem solved by the present utility model is to provide a quick-locking tool shank for turning tools to solve the problems of uneven stress, stress concentration, complex structure, high production cost, and unreliable limiting structure during the locking process as mentioned in the above background art.

[0011] To solve the above technical problems, the technical solution adopted by the present utility model is as follows:

[0012] A quick-locking turning tool bar includes a turning tool bar body. The turning tool bar body has a clamping space for clamping a cutting blade, and further includes a vertical limiting column, a limiting groove, a mounting hole, a transverse locking groove and a locking column;

[0013] The vertical limiting column includes a positioning column and a first trapezoidal column with a trapezoidal cross-section. The first trapezoidal column includes a trapezoidal small bottom end, and the trapezoidal small bottom end of the first trapezoidal column is fixedly connected to the top end of the positioning column;

[0014] The outer side surface of the first trapezoidal column is a first annular inclined surface;

[0015] The turning tool bar body is provided with a limiting groove that cooperates with the vertical limiting column;

[0016] The limiting groove divides the front end of the turning tool bar body into an upper pressing plate and a lower pressing plate through a spacing;

[0017] The vertical limiting column is installed in the limiting groove. The mounting hole at the lower end of the vertical limiting column cooperates with the locking column and is eccentric with the transverse locking groove of the turning tool bar body. The locking column locks the vertical limiting column in the limiting groove to shorten the spacing, so as to clamp the cutting blade in the clamping space;

[0018] The locking column includes a second trapezoidal column at the front end of the locking column. The second trapezoidal column includes a trapezoidal large bottom end, and the trapezoidal large bottom end of the second trapezoidal column is fixedly connected to the locking column; The second trapezoidal column includes a second annular outer side surface;

[0019] The axis line of the first trapezoidal column and the axis line of the second trapezoidal column are arranged in a staggered manner, so that the first annular outer side surface of the first trapezoidal column and the second annular outer side surface of the second trapezoidal column are arranged in a staggered manner.

[0020] As a further solution of the present invention, the axis line of the first trapezoidal column and the axis line of the second trapezoidal column are perpendicular to each other, so that the first annular outer side surface of the first trapezoidal column and the second annular outer side surface of the second trapezoidal column are arranged in a 90-degree staggered manner.

[0021] As a further solution of the present invention, the positioning column is a cylinder. The quick-locking turning tool bar further includes a guiding key strip and a key strip slot hole that cooperates with the guiding key strip. The guiding key strip is fixedly arranged at the bottom end of the positioning column, and the key strip slot hole that cooperates with the guiding key strip is arranged on the lower pressing plate.

[0022] As a further solution of the present invention, the first trapezoidal column and the second trapezoidal column are respectively trapezoidal cylinders.

[0023] As a further solution of the present invention, the locking column is a threaded column; the limiting groove can be replaced by a limiting hole.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. The design of the staggered arrangement of the first annular inclined surface and the second annular inclined surface enables multi-directional force application during the locking process. It is easier to disperse the single-point stress during the locking process, avoid stress concentration, and thus improve the firmness and safety of locking.

[0026] 2. Due to the multi-directional force application formed by the staggered arrangement of the first annular inclined surface and the second annular inclined surface, the locking structure is more stable and reliable, and can better withstand various complex forces during operation.

[0027] 3. Through the guiding and limiting of the key strip, the situation of using a square column for limiting in the prior art is avoided. It is possible to use a cylinder instead of the traditional square column, resulting in a larger stress-bearing area and more uniform force application. The square column has a weak volume and uneven force distribution, while the cylinder design increases the stress-bearing area and has a smaller fit clearance, ensuring the guiding and stability in the X, Y, and Z directions. The cylinder design not only improves the structural strength but also reduces the loosening problem caused by loose fitting, further enhancing the reliability of locking.

[0028] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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 following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic structural diagram of the present utility model.

[0031] Figure 2 It is a schematic structural diagram of the present utility model for clamping a blade.

[0032] Figure 3 It is Figure 2 the A - A cross-sectional schematic diagram of

[0033] Figure 4 It is a sectional schematic diagram of the vertical limiting column of the present utility model.

[0034] Figure 5 It is a schematic structural diagram of the prior art.

[0035] The reference numerals and names in the drawings are as follows:

[0036] Tool bit shank body 1, clamping space 2, vertical limiting post 3, limiting groove 4, mounting hole 5, transverse locking groove 6, locking post 7, positioning post 8, first trapezoidal post 9, first annular inclined surface 10, upper pressing plate 11, lower pressing plate 12, tool bit 13, second trapezoidal post 14, second annular outer side surface 15, guiding key strip 16, key strip slot hole 17 and spacing 18. Detailed implementation manners

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figure 1 —4. In the embodiment of the present invention, a quick-locking tool bit shank includes a tool bit shank body 1. The tool bit shank body 1 has a clamping space 2 for clamping a tool bit, and further includes a vertical limiting post 3, a limiting groove 4, a mounting hole 5, a transverse locking groove 6 and a locking post 7; the vertical limiting post 3 includes a positioning post 8 and a first trapezoidal post 9 with a trapezoidal cross-section. The first trapezoidal post 9 includes a trapezoidal small bottom end. The trapezoidal small bottom end of the first trapezoidal post 9 is fixedly connected to the top end of the positioning post 8; the outer side surface of the first trapezoidal post 9 is a first annular inclined surface 10; the tool bit shank body 1 is provided with a limiting groove 4 that cooperates with the vertical limiting post 3; the limiting groove 4 divides the front end of the tool bit shank body 1 into an upper pressing plate 11 and a lower pressing plate 12 up and down through a spacing 18;

[0039] The vertical limiting post 3 is installed in the limiting groove 4. The mounting hole 5 at the lower end of the vertical limiting post 3 cooperates with the locking post 7 and is eccentric to the transverse locking groove 6 of the tool bit shank body 1. The locking post 7 locks the vertical limiting post 3 in the limiting groove 4 to shorten the spacing 18 for clamping the tool bit 13 in the clamping space 2; a second trapezoidal post 14 is provided at the front end of the locking post 7. The second trapezoidal post 14 includes a trapezoidal large bottom end. The trapezoidal large bottom end of the second trapezoidal post 14 is fixedly connected to the locking post 7; the second trapezoidal post 14 includes a second annular outer side surface 15; the axis line of the first trapezoidal post 9 and the axis line of the second trapezoidal post 14 are arranged in an intersecting manner so that the first annular outer side surface of the first trapezoidal post 9 and the second annular outer side surface 15 of the second trapezoidal post 14 are arranged in an intersecting manner.

[0040] The axis line of the first trapezoidal column 9 and the axis line of the second trapezoidal column 14 are perpendicular to each other, so that the first annular outer side surface of the first trapezoidal column 9 and the second annular outer side surface 15 of the second trapezoidal column 14 are arranged in a 90-degree stagger. The positioning column 8 is a cylinder. The quick-locking tool shank further includes a guiding key strip 16 and a key strip slot hole 17 that cooperates with the guiding key strip 16. The guiding key strip 16 is fixedly arranged at the bottom end of the positioning column 8, and the lower pressing plate 12 is provided with a key strip slot hole 17 that cooperates with the guiding key strip 16. The first trapezoidal column 9 and the second trapezoidal column 14 are respectively trapezoidal cylinders. The locking column 7 is a threaded column; and the limiting groove 4 can be replaced with a limiting hole, which all belong to the extended implementation manners known to those of ordinary skill in the art.

[0041] Embodiment 1:

[0042] In the machining turning operation, when replacing the blade 13 of the traditional tool shank, the whole tool shank needs to be disassembled, which not only consumes time, but also may affect the machining accuracy and efficiency. The utility model provides a quick-locking tool shank, which significantly improves the deficiencies in the traditional technology. The specific implementation manners are as follows:

[0043] In practical applications, the operator installs this quick-locking tool shank on the lathe for efficient and precise turning machining. The tool shank realizes the quick locking and replacement of the blade 13 through structures such as the limiting groove 4, the vertical limiting column 3, and the horizontal locking groove 6 provided on its body.

[0044] First, the tool shank body 1 is provided with a clamping space 2 for installing the blade 13. By placing the blade 13 in the clamping space 2 and using the vertical limiting column 3 for preliminary fixation. The vertical limiting column 3 includes a positioning column 8 and a first trapezoidal column 9, and the first annular inclined surface 10 of the first trapezoidal column 9 is in close cooperation with the limiting groove 4 of the tool shank body 1. During the locking process, through the staggered arrangement of the first annular inclined surface 10 and the second annular inclined surface, multi-directional force application is achieved during the locking process.

[0045] Then, the operator completes the locking by tightening the locking column 7 in the horizontal locking groove 6. The second trapezoidal column 14 of the locking column 7 contacts the second annular inclined surface in the mounting hole 5. Through the spiral locking action, the inclined surface of the second trapezoidal column 14 is pulled downward to increase the contact area and ensure that the blade 13 is firmly locked. This design effectively disperses the single-point stress during the locking process and avoids the stress concentration phenomenon that easily occurs in the traditional vertical surface contact, thereby improving the firmness and safety of the locking.

[0046] In addition, through the guiding and limiting of the key bar and the key bar slot hole 17, a cylinder replaces the traditional square column for limiting, increasing the stress-bearing area and making the stress more uniform. The cylinder design has a smaller fit clearance, ensuring the guiding and stability in the X, Y, and Z directions, thus improving the machining accuracy and efficiency. The cylinder design not only enhances the structural strength but also reduces the loosening problem caused by insufficient tightness of the fit, further enhancing the reliability of locking.

[0047] Through the above specific implementation manners, the utility model significantly shortens the time for replacing the blade 13 during the mechanical processing, improves the working efficiency, and significantly enhances the firmness and safety of locking through the multi-directional stress and the cylinder limiting design.

[0048] Embodiment 2:

[0049] In the field of mechanical processing, after the blade 13 of the traditional tool bar is worn, the whole tool bar needs to be disassembled to replace the blade 13, which is not only time-consuming and laborious but also may affect the machining accuracy. This embodiment introduces a specific application method of a quick-locking tool bar for turning, demonstrating its application in actual operation.

[0050] First, install this quick-locking tool bar for turning on the lathe for conventional turning operations. When the blade 13 is worn and needs to be replaced, it is not necessary to disassemble the whole tool bar. Just turn the screw on the side to achieve the quick replacement of the blade 13. This design allows the operator to lock the screw on either side according to the needs, greatly improving the operation flexibility and efficiency.

[0051] The conical surface of the locking bolt fits with the taper of the tool bar, ensuring a firm locking effect. The inclined surface of the screw contacts the inclined surface of the locking bolt, and the two are in an eccentric relationship. When the screw is locked inward, the inclined surface of the screw presses the inclined surface of the tension hole of the locking bolt, causing the clamping part of the tool bar to move downward, thus pressing the blade 13 tightly. This not only makes the locking process simpler and faster but also ensures the stability of the blade 13.

[0052] Significant improvements have been made in the pressing plate structure. The traditional pressing plate is rectangular, with a small contact area and a limited contact area for the taper of the tension hole. In this design, the locking bolt is changed to a conical shape, greatly increasing the contact area. The circular locking bolt fits more tightly with the conical hole without clearance, and the locking bolt will not tilt after the screw is locked, with uniform stress.

[0053] Embodiment 3:

[0054] In this embodiment, the specific ways in which the quick-locking tool bar for turning achieves three main beneficial effects through the following principles will be described in detail, and specific application descriptions will be given in combination with actual scenarios:

[0055] 1. The multi-directional stress disperses the single-point stress.

[0056] Principle: By designing the staggered arrangement of the first annular inclined surface and the second annular inclined surface, when the locking column 7 is screwed and locked, the first annular inclined surface 10 of the first trapezoidal column 9 and the second annular outer side surface 15 of the second trapezoidal column 14 act on each other in different directions, forming a multi-directional force.

[0057] Specific implementation: When the operator is in the locking process, by tightening the locking column 7 in the transverse locking groove 6, the inclined surface of the second trapezoidal column 14 of the locking column 7 contacts the second annular inclined surface in the mounting hole 5, and the annular inclined surfaces of the first trapezoidal column 9 and the second trapezoidal column 14 are staggered, so that the force is distributed in multiple directions. This multi-directional force can effectively disperse the stress concentrated at a certain point, avoid the stress concentration phenomenon, and improve the firmness and safety of locking.

[0058] Scene application: When performing high-precision turning operations on a lathe, the operator can quickly install the cutting blade 13. Due to the multi-directional force design, even in a high-load and high-vibration machining environment, the cutting blade can remain stable and not easily loosen, thus ensuring machining accuracy and safety.

[0059] 2. The locking structure is stable and reliable.

[0060] Principle: The staggered arrangement of the first annular inclined surface and the second annular inclined surface forms a multi-directional force structure, making the entire locking structure more stable and reliable.

[0061] Specific implementation: During the locking process, an interlocking relationship is formed between the inclined surface of the trapezoidal column and the limiting groove 4, which can not only withstand forces from different directions, but also disperse and offset the influence of external complex forces through the interaction between the annular inclined surfaces. Through the screw locking action of the locking column 7, the inclined surface of the second trapezoidal column presses the second annular inclined surface in the mounting hole 5, pulling the vertical limiting column downward, thereby pressing the cutting blade 13 tightly to ensure that the cutting blade 13 is firmly locked.

[0062] Scene application: When encountering complex forces during the machining process, such as lateral force, longitudinal force, and torsional force, etc., this locking design can effectively resist these complex forces, ensure that the cutting blade is stable and does not shift, and improve the reliability and accuracy during the machining process.

[0063] 3. The cylindrical design improves the force uniformity and guiding stability.

[0064] Principle: By replacing the traditional square column limiting design with a cylindrical design and introducing the guiding limit of the key strip, the problems of uneven force and weak volume of the square column are solved.

[0065] Specific implementation: The cylindrical design increases the force-bearing area, enabling the force to be more evenly distributed on the circumference. The cooperation between the key bar 16 and the key bar slot 17 ensures the orientation and stability of the cylinder in the X, Y, and Z directions. The positioning post 8 is a cylinder, and the guiding key bar 16 is fixedly arranged at the bottom end. The key bar slot 17 matching with the guiding key bar 16 is arranged on the lower pressing plate 12.

[0066] Scene application: In the processing scenario where the blade needs to be frequently replaced, the operator only needs to simply tighten or loosen the locking post 7 to quickly replace the blade. The cylindrical design makes the locking simpler, faster, and the force is more evenly distributed, avoiding the loosening problem caused by insufficient tightness of the fit, and further enhancing the locking reliability.

[0067] Through the above specific implementation manners, in the actual application of the quick-locking turning tool bar of the present utility model, not only the firmness and safety during the locking process are significantly improved, but also higher structural stability and uniform force distribution are achieved through the innovative design. The operator can replace and lock the blade more efficiently and accurately during the actual processing, improving the overall processing efficiency and quality.

[0068] In the present utility model, unless otherwise clearly specified and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection" should 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 limited, 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 situations.

[0069] 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 embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model.

Claims

1. A quick-locking turning tool bar, comprising a turning tool bar body (1), the turning tool bar body (1) having a clamping space (2) for clamping a blade, characterized in that: It also includes a vertical limiting column (3), a limiting groove (4), a mounting hole (5), a transverse locking groove (6) and a locking column (7); The vertical limiting column (3) comprises a positioning column (8) and a first trapezoidal column (9) having a trapezoidal axial cross section, the first trapezoidal column (9) comprising a small trapezoidal bottom end, and the small trapezoidal bottom end of the first trapezoidal column (9) is fixedly connected to the top end of the positioning column (8); The outer side surface of the first trapezoidal column (9) is a first annular inclined surface (10); The tool rod body (1) is provided with a limiting groove (4) which matches with the vertical limiting column (3); The limiting groove (4) separates the front end of the turning tool rod body (1) into an upper pressing plate (11) and a lower pressing plate (12) through a spacing (18); A vertical limiting column (3) is installed in the limiting groove (4); a mounting hole (5) at the lower end of the vertical limiting column (3) matches with a locking column (7) and is eccentric with a transverse locking groove (6) of the turning tool rod body (1); the locking column (7) locks the vertical limiting column (3) in the limiting groove (4) to shorten the spacing (18) and is used to clamp the blade in the clamping space (2); The locking column (7) comprises a second trapezoidal column (14) located at the front end of the locking column (7), the second trapezoidal column (14) comprises a large trapezoidal bottom end, the large trapezoidal bottom end of the second trapezoidal column (14) is fixedly connected to the locking column (7); the second trapezoidal column (14) comprises a second annular outer side surface (15); The axis line of the first trapezoidal column (9) and the axis line of the second trapezoidal column (14) are arranged in a staggered manner so that the first annular outer side surface of the first trapezoidal column (9) and the second annular outer side surface (15) of the second trapezoidal column (14) are arranged in a staggered manner.

2. A quick-locking turning tool bar according to claim 1, characterized in that: The axis center line of the first trapezoidal column (9) and the axis center line of the second trapezoidal column (14) are perpendicular to each other so that the first annular outer side surface of the first trapezoidal column (9) and the second annular outer side surface (15) of the second trapezoidal column (14) are arranged in a staggered manner at 90 degrees.

3. The quick-locking turning tool bar according to claim 1, characterized in that: The positioning column (8) is a cylinder, and the quick locking tool rod also includes a guide key bar (16) and a key bar slot hole matching the guide key bar (16). The guide key bar (16) is fixedly arranged at the bottom end of the positioning column (8), and a key bar slot hole (17) matching the guide key bar (16) is arranged on the lower pressure plate (12).

4. The quick-locking turning tool bar according to claim 1, characterized in that: The first trapezoidal column (9) and the second trapezoidal column (14) are respectively trapezoidal cylinders.

5. The quick-locking turning tool bar according to claim 1, characterized in that: The locking column (7) is a threaded column.

6. The quick-locking turning tool bar according to claim 1, characterized in that: The limiting groove (4) can be replaced by a limiting hole.

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