Hydraulic powerful knife handle

Abstract

The utility model discloses a hydraulic powerful cutter handle which comprises a cutter handle body, one end of the cutter handle body is a cutter clamping end, a through hole is formed in the cutter clamping end, a clamping piece used for clamping a cutter is arranged in the through hole, a circle of expansion sleeve is arranged on the circumferential side of the through hole, a circle of cavity is formed in the circumferential side of the expansion sleeve, and a piston is arranged in the cavity. The two ends of the cavity are each provided with a pressurizing bolt used for controlling the moving direction of the piston. The pressurizing bolt extrudes the inner cavity through the pressurizing hole a and the pressurizing hole b respectively, so that the holding force of the expansion sleeve to the cutter is controlled, and the tool clamping device is convenient to operate, strong in holding force to the cutter and capable of effectively preventing vibration of the cutter and a machine tool spindle.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control tool technology, in particular to a hydraulic powerful tool handle. Background Art

[0002] Hydraulic tool holder is a widely used tool holder. Due to the high-pressure oil pressure in the tool holder, when the tool is clamped, the built-in oil chamber structure and the presence of high-pressure oil greatly increase the structural damping, which can effectively prevent the vibration of the tool and the machine tool spindle.

[0003] In the comparative document of the mechanical locking hydraulic cylinder proposed by the publication number CN213392966U, it is specifically proposed that "it includes a cylinder body, a rod cavity oil port, a rodless cavity oil port, a guide sleeve, a piston rod and a piston. The rear end of the inner piston cavity in the piston rod is fixed with an inner guide sleeve. The inner piston rod outer sleeve between the inner piston and the inner guide sleeve is provided with a compression spring. The inner piston rod is connected with a conical block. The rear end of the piston is connected with a clamping claw. The clamping claw is provided with an inner conical surface that matches the conical block."

[0004] The inventors have discovered that when the mechanical locking hydraulic cylinder in the comparative document is in use, it is necessary to push the inner piston forward through the disc spring, drive the conical block forward, and then expand the clamping claws through the matching conical surface to contact the cylinder body to achieve locking. However, the hydraulic oil in the hydraulic tool handle is under high pressure, and the force of the disc spring is not enough to push the piston under the internal high-pressure environment. For this reason, we have proposed a hydraulic high-power tool handle. Utility Model Content

[0005] The purpose of the utility model is to provide a hydraulic powerful knife handle to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A hydraulic high-power tool handle comprises a tool handle body, one end of the tool handle body is a tool clamping end, a through hole is formed at the tool clamping end, a clamping piece for clamping the tool is arranged in the through hole, a circle of expansion sleeve is arranged around the through hole, a circle of cavity is arranged around the expansion sleeve, a piston is arranged in the cavity, and pressure bolts for controlling the direction of the piston are arranged at both ends of the cavity.

[0008] As a preferred embodiment, the surface of the expansion sleeve in contact with the cavity is an inclined surface, and the piston matches the inclined surface of the inner wall of the cavity.

[0009] As a preference, the cross section of the piston expands sequentially from left to right.

[0010] As a preference, a pressure hole a and a pressure hole b are respectively provided at the upper and lower ends of the cavity, and the outer ends of the inner walls of the pressure hole a and the pressure hole b are both provided with internal threads, and the threads on the pressure bolt are adapted to the internal threads.

[0011] As a preference, pistons a are provided inside the pressurizing holes a and b.

[0012] As another preferred embodiment, a sealing ring is arranged at the end of the expansion sleeve, a limiting block is arranged on the outer side of the sealing ring, and the limiting block is integrated with the expansion sleeve.

[0013] Beneficial effects of the utility model:

[0014] In the utility model, the surface where the cavity inside the tool handle body contacts the expansion sleeve is set as an inclined surface, and a piston matching the cavity is arranged in the cavity, and a pressure hole a and a pressure hole b are respectively arranged at the upper and lower ends of the cavity. The pressure bolt squeezes the internal cavity through the pressure hole a and the pressure hole b respectively, thereby controlling the clamping force of the expansion sleeve on the tool. The utility model is easy to operate, has a strong clamping force on the tool, and can effectively prevent the vibration of the tool and the machine tool spindle.

[0015] In summary, the tool has the advantages of strong sealing, convenient operation, anti-vibration, etc., and is particularly suitable for the field of CNC tool technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the axonometric structure proposed by the utility model.

[0018] Figure 2 This is a front view structural schematic diagram of the utility model.

[0019] Figure 3 This is a front view structural schematic diagram of the utility model.

[0020] Figure 4 This is a schematic diagram of the enlarged structure of part A proposed by the utility model.

[0021] In the figure: 1-handle body; 2-through hole; 3-tool; 4-clamping piece; 5-expansion sleeve; 6-cavity; 7-piston; 8-pressure bolt; 51-sealing ring; 52-limiting block; 61-pressure hole a; 62-pressure hole b; 63-internal thread; 64-piston a. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Embodiment 1

[0024] Reference Figure 1-4 A hydraulic high-power tool handle comprises a tool handle body, one end of the tool handle body 1 is a tool clamping end, a through hole 2 is opened at the tool clamping end, a clamping member 4 for clamping a tool 3 is arranged in the through hole 2, a circle of expansion sleeve 5 is arranged around the through hole 2, a circle of cavity 6 is arranged around the expansion sleeve 5, a piston 7 is arranged in the cavity 6, and pressure bolts 8 for controlling the direction of the piston 7 are arranged at both ends of the cavity 6.

[0025] Reference Figure 3 The surface of the expansion sleeve 5 in contact with the cavity 6 is an inclined surface, and the piston 7 matches the inclined surface of the inner wall of the cavity 6. The cross section of the piston 7 is expanded from left to right.

[0026] It is worth mentioning here that the surface where the expansion sleeve 5 contacts the cavity 6 is set as an inclined surface. When the piston 7 moves left and right in the cavity 6, the expansion sleeve 5 is squeezed to control the clamping force on the tool 3, which is easy to operate and highly practical.

[0027] Reference Figure 2-3 The upper and lower ends of the cavity 6 are respectively provided with a pressurizing hole a61 and a pressurizing hole b62, and the inner wall outer ends of the pressurizing hole a61 and the pressurizing hole b62 are both provided with internal threads 63, and the threads on the pressurizing bolt 8 are adapted to the internal threads 63. The pressurizing hole a61 and the pressurizing hole b62 are both provided with pistons a64.

[0028] In this embodiment, the pressure bolt 8 rotates in the pressure hole a61 and the pressure hole b62 to push the piston a64 at the end of the pressure bolt 8, thereby increasing the oil pressure in the cavity 6 and controlling the left and right movement of the piston 7.

[0029] Reference Figure 2 A sealing ring 51 is disposed at the end of the expansion sleeve 5 , and a limiting block 52 is disposed on the outer side of the sealing ring 51 . The limiting block 52 is integrated with the expansion sleeve 5 .

[0030] It is worth mentioning here that the hydraulic oil in the internal cavity 6 is sealed by the sealing ring 51 to prevent leakage of the hydraulic oil and ensure the sealing of the cavity 6.

[0031] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A hydraulic high-power tool handle, comprising a tool handle body (1), characterized in that: One end of the tool handle body (1) is a tool clamping end, a through hole (2) is provided at the tool clamping end, a clamping member (4) for clamping a tool (3) is provided in the through hole (2), a circle of expansion sleeve (5) is provided around the through hole (2), a circle of cavity (6) is provided around the expansion sleeve (5), a piston (7) is provided in the cavity (6), and pressure bolts (8) for controlling the direction of the piston (7) are provided at both ends of the cavity (6).

2. A hydraulic powerful knife handle according to claim 1, characterized in that: The surface of the expansion sleeve (5) in contact with the cavity (6) is an inclined surface, and the piston (7) matches the inclined surface of the inner wall of the cavity (6).

3. A hydraulic powerful knife handle according to claim 1, characterized in that: The cross section of the piston (7) increases sequentially from left to right.

4. A hydraulic powerful knife handle according to claim 1, characterized in that: The cavity (6) is provided with a pressure hole a (61) and a pressure hole b (62) at the upper and lower ends thereof, respectively; the inner wall outer ends of the pressure hole a (61) and the pressure hole b (62) are both provided with internal threads (63); the threads on the pressure bolt (8) are adapted to the internal threads (63).

5. A hydraulic powerful knife handle according to claim 4, characterized in that: A piston a (64) is disposed inside the pressure hole a (61) and the pressure hole b (62).

6. A hydraulic powerful knife handle according to claim 4, characterized in that: A sealing ring (51) is provided at the end of the expansion sleeve (5), and a limiting block (52) is provided outside the sealing ring (51), wherein the limiting block (52) and the expansion sleeve (5) are integrated.

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