CN218613016U

CN218613016U - Inner-cooling type outer-expansion hydraulic knife handle

Info

Publication number: CN218613016U
Application number: CN202121133085.2U
Authority: CN
Inventors: 冯辉; 张莉莉
Original assignee: Bestool Tool Manufacturing Co ltd
Current assignee: Bestool Tool Manufacturing Co ltd
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2023-03-14
Anticipated expiration: 2031-05-25

Abstract

The application provides an inner-cooling type external expansion hydraulic tool handle which comprises a tool body; one end of the cutter body is provided with a butt joint for mounting the cutter; the butt joint comprises an inner sleeve and an outer sleeve; a closed interlayer is formed between the outer sleeve and the inner sleeve; the cutter body is provided with a communicating hole corresponding to the interlayer; the inner sleeve is internally provided with a cooling runner, one end of the inner sleeve is butted with the cutter body, and the other end of the inner sleeve is provided with a liquid outlet corresponding to the cooling runner. According to the technical scheme provided by the embodiment of the application, the cutter is arranged in the butt joint with the interlayer, hydraulic oil is injected into the interlayer by matching with the communication hole on the cutter body and the oil pressure is controlled, the inner sleeve can be controlled to clamp the cutter through elastic deformation, and the chatter cutter in the machining process is effectively reduced by using the damping effect of the hydraulic oil cavity, so that the qualification rate of products is ensured, and the cost is saved; furthermore, the cooling flow channel is arranged in the inner sleeve and is matched with the liquid outlet at the end part of the inner sleeve, so that the cutter can be effectively cooled, and the service life of the cutter is prolonged.

Description

Inner-cooling type outer-expansion hydraulic knife handle

Technical Field

The application relates to the technical field of numerical control machine tool components, in particular to an inner-cooling type outer-expansion hydraulic tool handle.

Background

The numerical control tool holder is an important tool used in machining and mainly used for connecting a main shaft of the numerical control machine tool with a machining tool. The major diameter cutter uses clearance fit and screw locking mode to press from both sides tightly mostly in the processing, produces the sword that quivers easily in the processing, makes processingquality decline, loss cutter, incremental cost, moreover, in the course of working, the cutter leads to the cutter to damage in advance because of the cooling is not enough usually.

Disclosure of Invention

In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide an internally-cooled, outwardly-expanding hydraulic tool shank.

The application provides an inner-cooling type external expansion hydraulic tool handle which comprises a tool body; one end of the cutter body is provided with a butt joint for mounting the cutter; the butt joint comprises an inner sleeve and an outer sleeve; a closed interlayer is formed between the outer sleeve and the inner sleeve; the cutter body is provided with a communicating hole corresponding to the interlayer; the inner sleeve is internally provided with a cooling flow passage, one end of the inner sleeve is butted with the cutter body, and the other end of the inner sleeve is provided with a liquid outlet corresponding to the cooling flow passage.

Further, the outer sleeve and the cutter body are integrally formed; one end of the inner sleeve is connected with the cutter body through threads, and the other end of the inner sleeve is brazed with the outer sleeve.

Further, the communication hole includes a first hole and a second hole; the first hole and the second hole are plugged through the matched first screw and the matched second screw respectively.

Furthermore, steel balls are arranged in the first holes; the diameter of the steel ball is matched with the inner diameter of the first hole.

Further, a plunger is arranged in the second hole; the outer diameter of the plunger matches the inner diameter of the second bore.

Further, a liquid inlet channel is arranged in the cutter body corresponding to the cooling flow channel; the butt joint port of the liquid inlet channel and the cooling flow channel is positioned on the butt joint end surface of the inner sleeve and the cutter body.

The application has the advantages and positive effects that:

according to the technical scheme, the cutter is arranged in the butt joint with the interlayer, hydraulic oil is injected into the interlayer by matching with the communication hole in the cutter body and controls the oil pressure, the inner sleeve can be controlled to clamp the cutter through elastic deformation, and the vibration of the cutter in the machining process is effectively reduced by utilizing the damping effect of the hydraulic oil cavity, so that the qualification rate of products is ensured, and the cost is saved; furthermore, the cooling flow channel is arranged in the inner sleeve and matched with the liquid outlet at the end part of the inner sleeve, so that the cutter can be effectively cooled, and the service life of the cutter is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of an internally-cooled and externally-expanded hydraulic tool shank provided in an embodiment of the present application.

The text labels in the figures are represented as: 100-a cutter body; 110-inner sleeve; 111-a liquid outlet; 120-a jacket; 130-a first aperture; 131-a first screw; 132-steel balls; 140-a second aperture; 141-a second screw; 142-plunger.

Detailed Description

The following detailed description of the present application is given for the purpose of enabling those skilled in the art to better understand the technical solutions of the present application, and the description in this section is only exemplary and explanatory, and should not be taken as limiting the scope of the present application in any way.

Referring to fig. 1, the present embodiment provides an internal-cooling type external-expansion hydraulic tool shank, which includes a tool body 100 having one end connected to a machine tool and the other end for mounting a tool; the cutter body 100 is provided with a butt joint corresponding to the cutter; the inside of the butt joint is provided with a closed interlayer, hydraulic pressure can be injected into the interlayer through the communicating holes in the cutter body 100 and the oil pressure can be controlled, so that the inner wall of the interlayer deforms under stress, the cutter inside is clamped, and the vibration cutter in the machining process can be effectively reduced due to the damping effect generated by the interlayer.

In a preferred embodiment, the docking head includes an inner housing 110 and an outer housing 120; the outer sleeve 120 is integrally formed with the cutter body 100; the inner sleeve 110 is screw-coupled to the cutter body 100 at one end and is brazed to the outer sleeve 120 at one end, thereby forming a closed sandwich.

Preferably, two communication holes are provided, respectively a first hole 130 and a second hole 140; the first and

second holes

130 and 140 are respectively disposed in a radial direction of the cutter body 100.

Preferably, a steel ball 132 is arranged in the first hole 130, the diameter of the steel ball 132 corresponds to the inner diameter of the first hole 130, and the steel ball is blocked in the first hole 130 by a first screw 131.

Preferably, a plunger 142 is arranged in the second hole 140, the outer diameter of the plunger 142 is matched with the inner diameter of the second hole 140, the plunger 142 is blocked in the second hole 140 through a second screw 141, and the plunger 142 can be controlled not to move in the second hole 140 by rotating the second screw 141, so that the oil pressure in the interlayer is controlled.

In a preferred embodiment, a cooling flow channel is further disposed in the outer wall of the inner sleeve 110, a liquid outlet 111 of the cooling flow channel is located at an end of the inner sleeve 110 away from the cutter body 100, and a liquid inlet is located at an end of the inner sleeve 110 abutting against the cutter body 100.

Preferably, the interior of the cutter body 100 is provided with a liquid inlet channel corresponding to the liquid inlet, and the liquid inlet channel is arranged along the axis of the cutter body 100.

The principles and embodiments of the present application are described herein using specific examples, which are only used to help understand the method and its core idea of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention in other contexts without modification may be viewed as within the scope of the present application.

Claims

1. An inner-cooling type external-expansion hydraulic knife handle is characterized by comprising a knife body (100); one end of the cutter body (100) is provided with a butt joint for mounting a cutter; the butt joint comprises an inner sleeve (110) and an outer sleeve (120); a closed interlayer is formed between the outer sleeve (120) and the inner sleeve (110); the cutter body (100) is provided with a communicating hole corresponding to the interlayer; a cooling flow channel is arranged in the inner sleeve (110), one end of the cooling flow channel is in butt joint with the cutter body (100), and a liquid outlet (111) is formed in the other end of the cooling flow channel.

2. The internally-cooled externally-expanding hydraulic tool shank according to claim 1, wherein the outer sleeve (120) is integrally formed with the tool body (100); one end of the inner sleeve (110) is in threaded connection with the cutter body (100), and the other end of the inner sleeve is brazed with the outer sleeve (120).

3. The internally-cooled, externally-expanding hydraulic tool shank according to claim 1, wherein the communication bore comprises a first bore (130) and a second bore (140); the first hole (130) and the second hole (140) are respectively sealed by a first screw (131) and a second screw (141) which are matched.

4. The internally-cooled externally-expanding hydraulic tool shank according to claim 3, wherein steel balls (132) are further arranged in the first hole (130); the diameter of the steel ball (132) is matched with the inner diameter of the first hole (130).

5. The internally-cooled, externally-expanding hydraulic tool shank according to claim 3, characterized in that a plunger (142) is further disposed in the second bore (140); the outer diameter of the plunger (142) matches the inner diameter of the second bore (140).

6. The internally-cooled and externally-expanded hydraulic tool shank according to claim 1, wherein a liquid inlet channel is formed in the tool body (100) corresponding to the cooling flow channel; and the butt joint port of the liquid inlet channel and the cooling flow channel is positioned on the butt joint end surface of the inner sleeve (110) and the cutter body (100).