WO2022142429A1

WO2022142429A1 - Cutting tool

Info

Publication number: WO2022142429A1
Application number: PCT/CN2021/115861
Authority: WO
Inventors: 邵建地
Original assignee: 力锋精密工具（浙江）有限公司
Priority date: 2020-12-31
Filing date: 2021-09-01
Publication date: 2022-07-07
Also published as: CN214557493U

Abstract

Provided is a cutting tool, comprising a cutting part (1) and a shaft part (14); the shaft part (14) is internally provided with a telescoping apparatus; the telescoping apparatus is connected to the cutting part (1); the telescoping apparatus can control the cutting part (1) to extend out or retract into the shaft part (14). The shaft part (14) is internally provided with an accommodating cavity (5); the bottom of the accommodating cavity (5) is provided with a flexible position-limiting block (6); the left and right sides of the accommodating cavity (5) are provided with a slide grooves; fixing openings (7) are disposed at the connection between the slide groove and the flexible position-limiting block (6) and at the top of the slide groove; the contact end of the two sides of the bottom of the cutting part (1) and the slide groove is provided with a snap piece (8); the snap piece (8) can snap into the fixing opening (7) to fix the position of the cutting part (1). The outer side of the shaft part (14) is provided with a motion groove (9); the motion groove (9) is provided with a button (10) connected to the cutting part (1); the button (10) is connected to a crossbar (11) arranged on the inner side of the cutting part (1); the crossbar (11) is connected to a spring (12); the spring (12) is connected to the snap piece (8); by means of the spring (12), the button (10) controls the position of the snap piece (8) and also controls the position of the cutting part (1). The cutting tool solves problems in the prior art such as low machining accuracy and short service life.

Description

a tool

technical field

The utility model belongs to the technical field of cutting tools, in particular to a cutting tool.

Background technique

The boring tool is a kind of tool, which is often used for inner hole processing, reaming, profiling, etc. Generally, the boring tool is installed on the boring machine, lathe or milling machine. The diameter of the boring tool can also be manufactured according to different needs. The clamping method distinguishes the boring tool. When the traditional boring tool is used for inner hole processing, it is prone to vibration and other phenomena, and it cannot process more precise inner holes.

The boring tool in the prior art has low machining accuracy and low service life, so a tool is required.

SUMMARY OF THE INVENTION

The purpose of the present utility model is to provide a tool for the above problems existing in the prior art.

The purpose of the present utility model can be achieved through the following technical solutions: a cutting tool, comprising a cutting part and a handle part, the handle part is arranged in a cylindrical shape, the cutting part is arranged at one end of the handle part, the The shank is also provided with a telescopic device, the telescopic device is connected with the cutting part, and the telescopic device can control the cutting part to extend or retract the handle.

The working principle of the utility model: the boring tool includes a cutting part and a handle part, the cutting part is installed at one end of the handle part, a telescopic device is arranged in the handle part, the telescopic device is connected to the cutting part, and the telescopic device controls the cutting part to extend or retract the handle The cutting part can retract the handle when not in use, be protected by the handle, and can extend out of the handle when in use, which is convenient and increases the service life of the cutting part.

In the above-mentioned tool, the contact end of the shank portion and the cutting portion is provided with a chip feeding slope.

In the above-mentioned kind of cutter, the cutting part is provided with a cutter, and the cutter is connected with the chip feeding slope. After the cutter is cut, the waste chips go from bottom to top. The chips are sent out after the chip feeding slope.

In the above-mentioned kind of cutter, the cutter includes a wide cutter and a narrow cutter, one end of the wide cutter is connected to the chip feeding slope, and the other end of the wide cutter is connected to the The narrow cutter, the wide cutter and the narrow cutter are arranged in an arc shape.

In the above-mentioned kind of knife, the telescopic device includes an accommodating cavity opened inside the handle, the bottom of the accommodating cavity is provided with a flexible limit block, and the left side of the accommodating cavity is connected to the The right side is provided with a chute, the connection between the chute and the flexible limit block, and the top of the chute are provided with fixed openings, and the two sides of the bottom of the cutting portion are connected to the The contact end of the sliding slot is provided with a clamping block, and the clamping block can be inserted into the fixing opening to fix the position of the cutting part.

In the above-mentioned knife, a moving groove is provided on the outer side of the handle portion, and a button connected with the cutting portion is provided on the moving groove, and the button is connected with the cutting portion. The inner horizontal bar, the horizontal bar is connected with a spring, the spring is connected with the clamping block, the button controls the position of the clamping block through the spring and simultaneously controls the The position of the cutting part.

In the above-mentioned tool, the left side of the shank is provided with a limiting projection.

In the above-mentioned tool, the shank portion and the cutting portion are made of cemented carbide.

In the above-mentioned kind of cutter, the cutting precision of the wide cutter is greater than the cutting precision of the narrow cutter.

Compared with the prior art, the utility model has the advantage of prolonging the service life.

Description of drawings

FIG. 1 is a schematic view of the cross-sectional structure of the present invention in the direction of the front view.

FIG. 2 is a schematic view of the cross-sectional structure of the present utility model in the direction viewed from the bottom.

3 is a schematic diagram of the cross-sectional structure of the cutting portion of the present invention.

FIG. 4 is a schematic view of the front structure of the cutting portion of the present invention.

In the figure, 1, cutting part; 2, chip feeding slope; 3, wide cutter; 4, narrow cutter; 5, accommodating cavity; 6, flexible limit block; 7, fixed port; 8, clamping block; 9, Moving slot; 10, button; 11, horizontal bar; 12, spring; 13, limit bump; 14, handle.

Detailed ways

The following are specific embodiments of the present utility model combined with the accompanying drawings to further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

As shown in FIG. 1 , the knife includes a cutting part 1 and a handle part 14 , the handle part 14 is set to a cylindrical shape, the cutting part 1 is set at one end of the handle part 14 , and a telescopic device is also arranged in the handle part 14 , and the telescopic device is connected The cutting part 1, the telescopic device can control the cutting part 1 to extend or retract the shank part 14, the boring tool includes the cutting part 1 and the shank part 14, the cutting part 1 is installed at one end of the shank part 14, and the shank part 14 is provided with a telescopic The telescopic device is connected to the cutting part 1, and the telescopic device controls the cutting part 1 to extend or retract the handle 14, so that the cutting part 1 can retract the handle 14 when not in use, and be protected by the handle 14. The handle portion 14 can be extended, which is convenient and increases the service life of the cutting portion 1 .

More specifically, the contact end of the shank portion 14 and the cutting portion 1 is provided with a chip feeding slope 2, which prolongs the contact between the cutting portion 1 and the shank portion 14, so that the cutting portion 1 will not cause damage to the shank portion 14 during operation.

In more detail, the cutting part 1 is provided with a cutter, which is connected with the chip feeding slope 2. After the cutting knife is cut, the waste chips are sent out from the bottom to the top to the chip feeding slope 2, and the chip feeding slope 2 enables the waste chips to be sent out. Sending out the cutting port increases the working efficiency of the cutter.

In further detail, the cutter includes a wide cutter 3 and a narrow cutter 4. One end of the wide cutter 3 is connected to the chip feeding slope 2, and the other end of the wide cutter 3 is connected to the narrow cutter 4, the wide cutter 3 and the narrow cutter. 4. It is set in an arc shape, and different cutting knives are set, which can meet different cutting needs and improve work efficiency.

In further detail, the telescopic device includes an accommodating cavity 5 opened inside the handle portion 14, the bottom of the accommodating cavity 5 is provided with a flexible limit block 6, the left and right sides of the accommodating cavity 5 are provided with chute, the chute and the flexible The connection of the limit block 6 and the top of the chute are provided with fixed openings 7, and the two sides of the bottom of the cutting part 1 and the contact ends of the chute are provided with clamping blocks 8, which can be inserted into the fixed openings 7 to fix the cutting 1, the accommodating cavity 5 is arranged inside the handle 14, the sliding grooves on both sides of the accommodating cavity 5 enable the cutting part 1 to be retracted and retracted in the length of the accommodating cavity 5, and the flexible limit block 6 at the bottom of the accommodating cavity 5 enables the cutting The cutting part 1 can be flexibly blocked when it moves to the bottom of the accommodating cavity 5 to avoid collision and wear of the cutting part 1 and the accommodating cavity 5 .

To be more specific, the outside of the handle 14 is provided with a moving groove 9, the moving groove 9 is provided with a button 10 connected with the cutting part 1, the button 10 is connected with the horizontal bar 11 arranged on the inner side of the cutting part 1, and the horizontal bar 11 is connected with a The spring 12, the spring 12 is connected to the block 8, the spring 12 of the button 10 controls the position of the block 8 and the position of the cutting part 1 at the same time, the button 10 is connected to the cutting part 1, and can move in the length direction of the moving groove 9, also The button 10 controls the spring 12, the spring 12 is connected to the clamping block 8, and the button 10 is pressed, the spring 12 is opened, so that the clamping block 8 shrinks out of the fixed opening 7, and the cutting part 1 can When moving to other positions, when moving to the fixing port 7, release the button 10, and the clamping block 8 snaps into the fixing port 7, so that the position of the cutting part 1 is fixed.

In more detail, the left side of the handle portion 14 is provided with a limiting bump 13 to improve the stability of the connection.

To be more specific, the handle portion 14 and the cutting portion 1 are made of cemented carbide, so that the cutting portion 1 and the handle portion 14 will not vibrate during machining.

More specifically, the cutting precision of the wide cutter 3 is greater than that of the narrow cutter 4, so that the cutting part 1 can cut a more precise inner hole and improve the precision.

The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or replace them in similar ways, but will not deviate from the spirit of the present invention or go beyond the appended claims the defined range.

Although a large number of terms are used in this paper, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the essence of the present invention; it is contrary to the spirit of the present invention to interpret them as any kind of additional limitations.

Claims

A cutter is characterized in that it comprises a cutting portion (1) and a handle portion (14), the handle portion (14) is arranged in a cylindrical shape, and the cutting portion (1) is arranged on the handle portion (14). At one end of 14), a telescopic device is further provided in the handle portion (14), the telescopic device is connected to the cutting portion (1), and the telescopic device can control the cutting portion (1) Extend or retract the handle (14).
A tool according to claim 1, characterized in that a chip feeding slope (2) is provided at the contact end of the handle portion (14) and the cutting portion (1).
A cutter according to claim 1, characterized in that, the cutting part (1) is provided with a cutter, the cutter is connected with the chip feeding slope (2), and the cutter is After the knife is cut, the waste chips are sent out from the bottom to the top to the chip feeding slope (2).
The cutter according to claim 3, characterized in that the cutter comprises a wide cutter (3) and a narrow cutter (4), and one end of the wide cutter (3) is connected to the The chip feeding slope (2), the other end of the wide cutter (3) is connected to the narrow cutter (4), the wide cutter (3) and the narrow cutter (4) are provided arc-shaped.
The tool according to claim 1, characterized in that the telescopic device comprises an accommodating cavity (5) opened inside the shank (14), and the bottom of the accommodating cavity (5) is A flexible limit block (6) is provided, the left and right sides of the accommodating cavity (5) are provided with chute, the connection between the chute and the flexible limit block (6), the The top of the chute is provided with a fixing port (7), and the two sides of the bottom of the cutting portion (1) and the contact end of the chute are provided with blocking blocks (8), and the blocking blocks (8) The position of the cutting part (1) can be fixed by being snapped into the fixing opening (7).
A tool according to claim 1, characterized in that a moving groove (9) is provided on the outer side of the handle portion (14), and the moving groove (9) is provided with the cutting portion (1) A button (10) connected, the button (10) is connected to a horizontal bar (11) arranged on the inner side of the cutting part (1), and the horizontal bar (11) is connected with a spring (12) ), the spring (12) is connected to the block (8), and the button (10) controls the position of the block (8) through the spring (12) and simultaneously controls the position of the block (8). the position of the cutting part (1).
A tool according to claim 1, characterized in that, a limiting projection (13) is provided on the left side of the handle portion (14).
A tool according to claim 1, characterized in that, the handle portion (14) and the cutting portion (1) are made of cemented carbide.
A tool according to claim 4, characterized in that the cutting precision of the wide cutter (3) is greater than the cutting precision of the narrow cutter (4).