Tool Holder Locking Structure

Abstract

The present invention discloses a tool holder locking structure, which includes a tool holder. The tool holder is placed horizontally, and an unlocking mechanism is fixedly installed on the upper surface of the top of the tool holder. A self-locking tool holder mechanism is fixedly installed at the axial position inside the tool holder. The unlocking mechanism is composed of an L-shaped thick plate, a limiting plate, a cylinder, a support spring and a positioning rod. The self-locking tool holder mechanism is composed of a first semi-circular plate, a second semi-circular plate, a spherical ball and a pressing spring. Due to the adoption of the above technical solution, the technical progress achieved by the present invention compared with the prior art is as follows: Different from most tool holders with rigid fixation on the market, this device uses a spring pressing method to press the tool holder. When the tool is stressed, the force of the tool can be evenly transmitted to the inside of the tool holder and the tool seat for buffering, further prolonging the service life of the tool. The overall structure of the device is simple, the installation of the tool is convenient, and it is also equipped with an unlocking mechanism. The overall operation is simple, forming a physical protection for the tool and simplifying the disassembly and assembly steps of the tool holder.

Description

Technical Field

[0001] The present invention relates to the technical field of lathe component assembly, and specifically relates to a tool sleeve locking structure. Background Art

[0002] A lathe is a machine tool mainly used for turning a rotating workpiece with a turning tool. On a lathe, drills, reamers, broaches, taps, dies, knurling tools, etc. can also be used for corresponding processing. Lathes are mainly used for processing shafts, discs, sleeves, and other workpieces with rotating surfaces, and are one of the most widely used types of machine tools in machinery manufacturing and repair factories. During the process of lathe processing, it is necessary to fix or replace the cutting tools used. Currently, most tool sleeves use a spiral fixing and tightening method for positioning, which is extremely inconvenient for disassembly and assembly when the tool is replaced or repaired. At the same time, due to its rigid connection, the vibration generated during the operation of the tool cannot be buffered, easily damaging the tool tip and increasing production costs. Therefore, it is necessary to continue to improve the existing technology. Summary of the Invention

[0003] The purpose of the present invention is to provide a tool sleeve locking structure to solve the problems raised in the above background art.

[0004] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0005] The tool sleeve locking structure includes a tool holder, the tool holder is placed horizontally, an unlocking mechanism is fixedly installed on the upper surface of the top of the tool holder, and a self-locking tool sleeve mechanism is fixedly installed at the axial position inside the tool holder.

[0006] The unlocking mechanism consists of an L-shaped thick plate, a limiting plate, a cylinder, a support spring, and a positioning rod. The limiting plate is fixedly installed inside the upper surface of the tool holder, the L-shaped thick plate is installed on the lower surface of the limiting plate, three cylinders are fixedly installed on the inner surface of the L-shaped thick plate, a positioning rod is fixedly installed between the cylinders, and a support spring is installed outside the positioning rod.

[0007] The self-locking tool sleeve mechanism consists of a first semi-circular plate, a second semi-circular plate, a spherical ball, and a pressing spring. The first semi-circular plate and the second semi-circular plate cooperate with each other to form an integral tool sleeve structure and are installed inside the tool holder. A pressing spring is vertically installed inside the first semi-circular plate, spherical balls are installed at both ends of the pressing spring, and a cutting tool is fixedly installed at the axial position between the first semi-circular plate and the second semi-circular plate.

[0008] Furthermore, a rectangular groove for the up and down movement of the L-shaped thick plate is formed on the upper surface of the tool holder, a limiting plate is fixedly installed at the top of the rectangular groove, and one end of the support spring abuts against the upper surface of the tool holder and the other end abuts against the inner lower surface of the L-shaped thick plate.

[0009] Further, the number of the positioning rods is set to two. The positioning rods are fixedly installed between the three cylinders. A limiting disc is fixedly installed at the top of the positioning rods. The lower surface of the limiting disc fits the upper surface of the I-shaped thick plate in a state without external force. Hemispheres are fixedly installed at the bottom ends of the cylinders.

[0010] Further, a universal spindle is fixedly installed on one side of the connection point between the first semi-circular plate and the second semi-circular plate, and a connecting shaft is fixedly installed inside the universal spindle.

[0011] Further, three accommodation through holes are equidistantly formed in the first semi-circular plate. The aperture of the accommodation through hole at the end far from the axis is smaller than the maximum diameter of the accommodation through hole. The maximum diameter of the spherical ball is set to be the same as the size of the accommodation through hole.

[0012] Further, a supporting ring is fixedly installed at one end of the accommodation through hole close to the axis of the first semi-circular plate. An arc-shaped groove for accommodating the spherical ball is formed inside the supporting ring. When the spherical ball fits the arc-shaped groove, the spherical ball protrudes beyond the bottom surface of the supporting ring.

[0013] Further, the end of the cutter located inside the first semi-circular plate is arranged in a flat plate shape, and limiting round holes corresponding to the accommodation through holes one by one are formed in the flat plate.

[0014] Further, a cutter head for cutting and shaping is formed at one end of the cutter.

[0015] Due to the adoption of the above technical solutions, the technical progress achieved by the present invention compared with the prior art is:

[0016] The present invention uses a self-locking cutter mechanism and an unlocking mechanism to lock the cutter sleeve in the tool holder. Different from most of the rigidly fixed cutter sleeves on the market, this device uses a spring to tightly press the cutter sleeve. When the cutter is stressed, the force of the cutter can be evenly transmitted to the inside of the cutter sleeve and the tool holder for buffering, further extending the service life of the cutter. At the same time, using the spring to tightly press can keep the cutter in a tightly fitting state all the time, and there will be no unnecessary displacement due to the vibration of the cutter. The overall structure of the device is simple, it is convenient to install the cutter, and it is also equipped with an unlocking mechanism. The overall operation is simple, forming a physical protection for the cutter and simplifying the disassembly and assembly steps of the cutter sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 is a cross-sectional view of the present invention;

[0019] Figure 3 is a three-dimensional structural diagram of the cutter sleeve in the present invention;

[0020] Figure 4 For Figure 2 Schematic enlarged view of structure A in

[0021] Figure 5 Schematic view of several types of thick plate structures in the present invention.

[0022] In the figure: 1. Tool holder; 11. Rectangular groove; 2. Several types of thick plates; 21. Limiting plate; 22. Cylinder; 221. Hemisphere; 23. Support spring; 24. Positioning rod; 241. Limiting disc; 3. First semi-circular plate; 31. Second semi-circular plate; 32. Sphere; 33. Tightening spring; 4. Celestial axis; 41. Connecting shaft; 5. Supporting ring; 51. Arc-shaped groove; 6. Accommodating through hole; 7. Limiting round hole; 8. Tool; 81. Tool bit. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. 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.

[0024] The tool sleeve locking structure includes a tool holder 1, the tool holder 1 is placed horizontally, an unlocking mechanism is fixedly installed on the upper surface of the top of the tool holder 1, and a self-locking tool sleeve mechanism is fixedly installed at the inner axis position of the tool holder 1.

[0025] The unlocking mechanism is composed of several types of thick plates 2, a limiting plate 21, a cylinder 22, a support spring 23 and a positioning rod 24. The limiting plate 21 is fixedly installed on the inner upper surface of the tool holder 1, the several types of thick plates 2 are installed on the lower surface of the limiting plate 21, three cylinders 22 are fixedly installed on the inner surface of the several types of thick plates 2, a positioning rod 24 is fixedly installed between the cylinders 22, and a support spring 23 is installed outside the positioning rod 24.

[0026] The self-locking tool sleeve mechanism is composed of a first semi-circular plate 3, a second semi-circular plate 31, a sphere 32 and a tightening spring 33. The first semi-circular plate 3 and the second semi-circular plate 31 cooperate with each other to form an integral tool sleeve structure and are installed in the tool holder 1. A tightening spring 33 is vertically installed in the first semi-circular plate 3, spheres 32 are installed at both ends of the tightening spring 33, and a tool 8 is fixedly installed at the axis position between the first semi-circular plate 3 and the second semi-circular plate 31.

[0027] Furthermore, a rectangular groove 11 for the up and down movement of the several types of thick plates 2 is formed on the upper surface of the tool holder 1. A limiting plate 21 is fixedly installed at the top of the rectangular groove 11, and one end of the support spring 23 abuts against the upper surface of the tool holder 1 and the other end abuts against the inner lower surface of the several types of thick plates 2.

[0028] Further, the number of positioning rods 24 is set to two. The positioning rods 24 are fixedly installed between the three cylinders 22. A limiting disc 241 is fixedly installed at the top of the positioning rod 24. The lower surface of the limiting disc 241 fits the upper surface of the J-shaped thick plate 2 in a state without external force. A hemisphere 221 is fixedly installed at the bottom end of the cylinder 22.

[0029] Further, a connecting shaft 41 is fixedly installed inside a connecting shaft 4 fixedly installed on one side of the connection point between the first semi-circular plate 3 and the second semi-circular plate 31.

[0030] Further, three receiving through holes 6 are equidistantly formed in the first semi-circular plate 3. The aperture of the receiving through hole 6 at the end far from the axis is smaller than the maximum diameter of the receiving through hole 6. The maximum diameter of the spherical ball 32 is set to be the same as the size of the receiving through hole 6.

[0031] Further, a supporting ring 5 is fixedly installed at one end of the receiving through hole 6 close to the axis of the first semi-circular plate 3. An arc-shaped groove 51 for receiving the spherical ball 32 is formed inside the supporting ring 5. When the spherical ball 32 fits the arc-shaped groove 51, the spherical ball 32 protrudes beyond the bottom surface of the supporting ring 5.

[0032] Further, one end of the cutter 8 located inside the first semi-circular plate 3 is in a flat plate shape, and limiting circular holes 7 corresponding to the receiving through holes 6 are formed in the flat plate.

[0033] Further, a cutter head 81 for cutting and shaping is formed at one end of the cutter 8.

[0034] When the device of the present invention is in use, first, the first semi-circular plate 3 and the second semi-circular plate 31 are rotated and opened with the connecting shaft 41 as the rotation center. After placing the cutter 8 in a suitable position, it is rotated and closed again, so that the spherical ball 32 inside the first semi-circular plate 3 is in mutual contact and cooperation with the limiting circular hole 7. Then, the first semi-circular plate 3 and the second semi-circular plate 31 are inserted into the tool holder 1. At this time, it is necessary to press the J-shaped thick plate 2 so that the hemisphere 221 inside the cylinder 22 enters the inside of the tool holder 1. When the first semi-circular plate 3 enters the tool holder 1, the protruding spherical ball 32 on the first semi-circular plate 3 is pressed down by the hemisphere 221 at the top of the cylinder 22 so that the first semi-circular plate 3 can smoothly enter the tool holder 1. Similarly, when it is necessary to take out the tool sleeve, pressing the J-shaped thick plate 2 again can smoothly take out the tool sleeve. At the same time, due to the elastic force of the support spring 23, the J-shaped thick plate 2 is always at the top of the upper surface of the tool holder 1 for a long time. Furthermore, the hemisphere 221 does not touch the spherical ball 32 to achieve the tool sleeve locking effect.

[0035] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Knife sheath locking structure, including a knife seat (1), Characterized in that: The knife seat (1) is placed horizontally, and an unlocking mechanism is fixedly installed on the upper surface of the top of the knife seat (1), and a self-locking knife sheath mechanism is fixedly installed at the inner axis position of the knife seat (1); The unlocking mechanism is composed of a U-shaped thick plate (2), a limiting plate (21), a cylinder (22), a support spring (23) and a positioning rod (24). The limiting plate (21) is fixedly installed inside the upper surface of the knife seat (1), the U-shaped thick plate (2) is installed on the lower surface of the limiting plate (21), three cylinders (22) are fixedly installed on the inner side surface of the U-shaped thick plate (2), a positioning rod (24) is fixedly installed between the cylinders (22), and a support spring (23) is installed outside the positioning rod (24); The self-locking knife sheath mechanism is composed of a first semi-circular plate (3), a second semi-circular plate (31), a spherical ball (32) and a pressing spring (33). The first semi-circular plate (3) and the second semi-circular plate (31) cooperate with each other to form an integral knife sheath structure and are installed in the knife seat (1). A pressing spring (33) is vertically installed inside the first semi-circular plate (3), spherical balls (32) are installed at both ends of the pressing spring (33), and a cutter (8) is fixedly installed at the axis position between the first semi-circular plate (3) and the second semi-circular plate (31); Hemispheres (221) are fixedly installed at the bottom ends of the three cylinders (22); The unlocking mechanism drives the cylinder (22) to move down by pressing the U-shaped thick plate (2), so that the hemisphere (221) at the bottom end of the cylinder (22) presses down the spherical ball (32) in the self-locking knife sheath mechanism to achieve unlocking; One end of the cutter (8) located inside the first semi-circular plate (3) is arranged in a flat plate shape, and limiting circular holes (7) corresponding to the accommodating through holes (6) one by one are formed in the flat plate; The self-locking knife sheath mechanism pushes the spherical ball (32) to partially protrude from the inner surface of the first semi-circular plate (3) through the pressing spring (33) and cooperates with the limiting circular holes (7) on the cutter (8) to achieve self-locking.

2. The knife sheath locking structure according to claim 1, Characterized in that: A rectangular groove (11) for the up and down movement of the U-shaped thick plate (2) is formed on the upper surface of the knife seat (1), a limiting plate (21) is fixedly installed at the top of the rectangular groove (11), and one end of the support spring (23) abuts against the upper surface of the knife seat (1) and the other end abuts against the inner lower surface of the U-shaped thick plate (2).

3. The knife sheath locking structure according to claim 2, Characterized in that: The number of the positioning rods (24) is set to two. The positioning rods (24) are fixedly installed between the three cylinders (22), a limiting disc (241) is fixedly installed at the top of the positioning rods (24), and the lower surface of the limiting disc (241) fits against the upper surface of the U-shaped thick plate (2) in a state without external force.

4. The knife sheath locking structure according to claim 1, Characterized in that: A vertical shaft (4) is fixedly installed on one side of the connection point between the first semi-circular plate (3) and the second semi-circular plate (31), and a connecting shaft (41) is fixedly installed inside the vertical shaft (4).

5. The tool holder locking structure according to claim 1, characterized in that: Three accommodation through holes (6) are equidistantly arranged in the first semi-circular plate (3), the aperture of one end of the accommodation through hole (6) far from the axis of the first semi-circular plate (3) is smaller than the maximum diameter of the accommodation through hole (6), and the maximum diameter of the spherical ball (32) is set to be the same as the size of the accommodation through hole (6).

6. The tool holder locking structure according to claim 5, characterized in that: A supporting ring (5) is fixedly installed at one end of the accommodation through hole (6) close to the axis of the first semi-circular plate (3), an arc-shaped groove (51) for accommodating the spherical ball (32) is formed inside the supporting ring (5), and when the spherical ball (32) fits the arc-shaped groove (51), the spherical ball (32) protrudes beyond the bottom surface of the supporting ring (5).

7. The tool holder locking structure according to claim 1, characterized in that: One end of the cutting tool (8) is formed with a cutting head (81) for cutting and shaping.

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