Clamping device for lathe tool

Abstract

The utility model discloses a clamping device for lathe tools, which comprises a rear seat and a casing pipe, an adjusting ring is rotatably connected between the rear seat and the casing pipe, three movable plates distributed in a circumferential array are arranged in the casing pipe, the three movable plates are all provided with clamping plates, and the clamping plates are connected with the rear seat and the casing pipe. The adjusting ring is used for driving the three movable plates to gather towards the middle or diffuse outwards at the same time, and the rear seat is provided with a limiting structure used for limiting the movable plates. The tool clamping device is simple in structure, a tool can be conveniently and rapidly clamped and disassembled, when the adjusting ring is rotated, the adjusting opening can rotate along with the adjusting ring, so that the adjusting opening drives the positioning rod to move towards the center point of the sleeve or move outwards, the positioning rod drives the three movable plates to move towards the center or diffuse outwards, and the tool clamping device is convenient to use. And therefore, the three clamping plates clamp and fix the cutter, the clamping effect is good, and the cutter can be conveniently and quickly centered and fixed.

Description

Technical Field

[0001] The utility model belongs to the technical field related to numerically controlled lathes, and in particular relates to a clamping device for lathe tools. Background Art

[0002] With the continuous advancement of industrial technology, CNC lathes are becoming more and more mature, and their application range is also relatively wide. CNC lathes are one of the most widely used CNC machine tools. It is mainly used for cutting and processing of inner and outer cylindrical surfaces of shaft parts or disk parts, inner and outer conical surfaces of arbitrary cone angles, complex rotating inner and outer curved surfaces, and cylindrical and conical threads, and can perform grooving, drilling, reaming, reaming and boring, etc. The blade is a relatively important component on the CNC lathe. When processing the workpiece, the tool needs to be clamped by a clamping device to facilitate the use of the tool. However, there are still some defects in the existing CNC lathe tool clamping device, such as:

[0003] The existing clamping device has a poor clamping effect on the tool when in use, and is prone to loosening and skewing, affecting the cutting effect of the workpiece. It is also inconvenient to quickly replace the tool. In addition, the existing clamping device requires manual adjustment of the tool to keep the tool in a centered state, which is more troublesome to operate. Utility Model Content

[0004] The utility model aims to provide a clamping device for a lathe tool to solve the technical problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a clamping device for lathe tools, comprising a back seat and a sleeve, an adjusting ring being rotatably connected between the back seat and the sleeve, three movable plates distributed in a circular array are arranged in the sleeve, clamping plates are arranged on the three movable plates, and the adjusting ring is used to drive the three movable plates to gather towards the middle or spread outward at the same time, and a limiting structure for limiting the movable plate is arranged on the back seat, and a locking sleeve for locking the adjusting ring is arranged on the back seat.

[0006] Preferably, the outer diameter of the rear seat is equal to that of the sleeve, the inner diameter of the adjusting ring is smaller than the inner diameter of the sleeve, and the outer diameter of the adjusting ring is larger than the outer diameter of the sleeve.

[0007] Preferably, the surface of the adjustment ring is provided with three adjustment openings distributed in a circular array, and a positioning rod is sleeved on the movable plate, and the end of the positioning rod extends into the adjustment opening and is slidably connected thereto.

[0008] Preferably, the limiting structure comprises a limiting seat fixed on the rear seat, a trapezoidal groove is arranged on the surface of the limiting seat, and a trapezoidal block slidably connected to the trapezoidal groove is arranged at the end of the movable plate.

[0009] Preferably, a V-shaped groove is provided on the surface of the clamping plate.

[0010] Preferably, a first annular groove is provided on the surface of the adjustment ring at one end of the rear seat, an external thread is provided on the surface of the first annular groove, a second annular groove is provided inside the locking sleeve at one end of the adjustment ring, an internal thread is provided on the second annular groove, and the internal thread is threadedly connected to the external thread.

[0011] Preferably, the surfaces of the adjusting ring and the locking sleeve are both provided with anti-slip patterns.

[0012] Preferably, the adjustment opening is an inclined arc-shaped structure.

[0013] The utility model provides a clamping device for lathe tools, which has the following advantages:

[0014] 1. The utility model has a simple structure and is convenient for quickly clamping and disassembling the tool. When the adjusting ring is rotated, the adjusting port will rotate with the adjusting ring, so that the adjusting port drives the positioning rod to move toward the center point of the sleeve or move outward, so that the positioning rod drives the three movable plates to move toward the center or spread outward, so that the three clamping plates clamp and fix the tool, and the clamping effect is good, which is convenient for quickly fixing the tool in the center.

[0015] 2. After adjusting the adjusting ring to clamp the tool, slide the locking sleeve so that the internal thread of the locking sleeve contacts the external thread of the adjusting ring, and then rotate the locking sleeve so that the locking sleeve and the adjusting ring are firmly fixed together. Due to the interference fit between the locking sleeve and the back seat, the adjusting ring is locked and fixed, which can effectively prevent the loosening of the adjusting ring and cause the tool to fall off, greatly improving the stability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 for Figure 1 Front view of

[0019] Figure 3 This is a diagram of the locking sleeve in the utility model;

[0020] Figure 4 This is an exploded view of the rear seat and the adjustment ring in the utility model;

[0021] Figure 5 This is an exploded view of the adjusting ring and the movable plate in the utility model;

[0022] Explanation of the markings in the figure: 1. rear seat; 2. sleeve; 3. movable plate; 4. clamping plate; 5. adjusting ring; 6. locking sleeve; 7. V-shaped groove; 8. adjusting port; 9. first annular groove; 10. second annular groove; 11. limit seat; 12. trapezoidal groove; 13. positioning rod; 14. trapezoidal block. DETAILED DESCRIPTION

[0023] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0024] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0026] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0027] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0028] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of a clamping device for a lathe tool of the utility model in conjunction with the accompanying drawings.

[0029] like Figure 1-5 As shown, a clamping device for a lathe tool of the utility model comprises a back seat 1 and a sleeve 2, an adjusting ring 5 is rotatably connected between the back seat 1 and the sleeve 2, the outer diameters of the back seat 1 and the sleeve 2 are equal, the inner diameter of the adjusting ring 5 is smaller than the inner diameter of the sleeve 2, and the outer diameter of the adjusting ring 5 is larger than the outer diameter of the sleeve 2, three movable plates 3 distributed in a circular array are arranged in the sleeve 2, and clamping plates 4 are arranged on the three movable plates 3, and the adjusting ring 5 is used to drive the three movable plates 3 to gather toward the middle or spread outward at the same time, and the surface of the adjusting ring 5 is provided with three circular arrays. The adjustment openings 8 are arranged in an array around the periphery, and a positioning rod 13 is sleeved on the movable plate 3. The end of the positioning rod 13 extends into the adjustment opening 8 and is slidably connected thereto. When the adjustment ring 5 is rotated, the adjustment opening 8 will rotate along with the adjustment ring 5, so that the adjustment opening 8 drives the positioning rod 13 to move toward the center point of the sleeve 2 or outward, so that the positioning rod 13 drives the three movable plates 3 to move toward the center or spread outward, so that the three clamping plates 4 clamp and fix the tool, and the clamping effect is good, which is convenient for quickly fixing the tool in the center. The adjustment opening 8 is an inclined arc structure, which is convenient for adjusting the spacing between the three clamping plates 4, so as to facilitate clamping and fixing tools of different sizes. The surface of the clamping plate 4 is provided with a V-groove 7. Through the setting of the V-groove 7, the clamping effect of the tool is improved, and the clamping is made more stable and firm.

[0030] A limiting structure for limiting the movable plate 3 is provided on the rear seat 1, and the limiting structure includes a limiting seat 11 fixed on the rear seat 1, a trapezoidal groove 12 is provided on the surface of the limiting seat 11, and a trapezoidal block 14 slidably connected to the trapezoidal groove 12 is provided at the end of the movable plate 3. Through the cooperation between the trapezoidal block 14 and the trapezoidal groove 12, the movable plate 3 is limited, so that the movable plate 3 can only move along its length direction.

[0031] The rear seat 1 is provided with a locking sleeve 6 for locking the adjusting ring 5. The surface of the adjusting ring 5 at one end of the rear seat 1 is provided with a first annular groove 9, and the surface of the first annular groove 9 is provided with an external thread. The locking sleeve 6 is provided with a second annular groove 10 at one end of the adjusting ring 5. The second annular groove 10 is provided with an internal thread, and the internal thread is threadedly connected with the external thread. After the adjusting ring 5 is adjusted to clamp the tool, the locking sleeve 6 is slid so that the internal thread of the locking sleeve 6 contacts the external thread of the adjusting ring 5, and then the locking sleeve 6 is rotated so that the locking sleeve 6 and the adjusting ring 5 are firmly fixed together. Since the locking sleeve 6 and the rear seat 1 are interference fit, the locking and fixing of the adjusting ring 5 is achieved, which can effectively prevent the loosening of the adjusting ring 5 and the falling off of the tool, and greatly improve the stability of the structure. The surfaces of the adjusting ring 5 and the locking sleeve 6 are both provided with anti-slip patterns, which are convenient for rotating the adjusting ring 5 and the locking sleeve 6.

[0032] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A clamping device for a lathe tool, characterized in that: The invention comprises a rear seat (1) and a sleeve (2), wherein an adjusting ring (5) is rotatably connected between the rear seat (1) and the sleeve (2), wherein three movable plates (3) distributed in a circumferential array are arranged in the sleeve (2), and clamping plates (4) are arranged on the three movable plates (3), and the adjusting ring (5) is used to drive the three movable plates (3) to gather toward the middle or spread outward at the same time, and a limiting structure for limiting the movable plates (3) is arranged on the rear seat (1), and a locking sleeve (6) for locking the adjusting ring (5) is sleeved on the rear seat (1).

2. A clamping device for lathe tools according to claim 1, characterized in that: The outer diameters of the rear seat (1) and the sleeve (2) are equal, the inner diameter of the adjustment ring (5) is smaller than the inner diameter of the sleeve (2), and the outer diameter of the adjustment ring (5) is larger than the outer diameter of the sleeve (2).

3. A clamping device for lathe tools according to claim 1, characterized in that: The surface of the adjustment ring (5) is provided with three adjustment openings (8) distributed in a circumferential array, and a positioning rod (13) is sleeved on the movable plate (3), and the end of the positioning rod (13) extends into the adjustment opening (8) and is slidably connected thereto.

4. A clamping device for lathe tools according to claim 3, characterized in that: The limiting structure comprises a limiting seat (11) fixed on the rear seat (1), a trapezoidal groove (12) being provided on the surface of the limiting seat (11), and a trapezoidal block (14) slidably connected to the trapezoidal groove (12) being provided at the end of the movable plate (3).

5. The clamping device for lathe tool according to claim 1, characterized in that: The surface of the clamping plate (4) is provided with a V-shaped groove (7).

6. The clamping device for lathe tool according to claim 1, characterized in that: The surface of the adjusting ring (5) at one end of the rear seat (1) is provided with a first annular groove (9), and the surface of the first annular groove (9) is provided with an external thread. The locking sleeve (6) is provided with a second annular groove (10) inside the adjusting ring (5) at one end, and the second annular groove (10) is provided with an internal thread, and the internal thread is threadedly connected with the external thread.

7. The clamping device for lathe tool according to claim 1, characterized in that: The surfaces of the adjusting ring (5) and the locking sleeve (6) are both provided with anti-slip patterns.

8. The clamping device for lathe tool according to claim 3, characterized in that: The regulating port (8) is an inclined arc-shaped structure.

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