CN210615154U

CN210615154U - Tool bit structure for machine tool

Info

Publication number: CN210615154U
Application number: CN201921338654.XU
Authority: CN
Inventors: 夏增富; 夏瑜键
Original assignee: Zhejiang Huading Machinery Co ltd
Current assignee: Zhejiang Huading Machinery Co ltd
Priority date: 2019-08-17
Filing date: 2019-08-17
Publication date: 2020-05-26
Anticipated expiration: 2029-08-17

Abstract

A cutter head structure for a machine tool, comprising a cutter head, characterized in that: the tool bit is characterized by further comprising a cylinder body capable of extending into the inner cavity of a workpiece, a fixing groove is formed in the end face of the cylinder body, the tool bit can be detachably mounted in the fixing groove, the end portion of a blade of the tool bit extends out of the outer peripheral face of the cylinder body, and a fixing portion capable of being fixed with a machine tool is arranged at the other end of the cylinder body. The utility model has the advantages that: the tool bit can directly extend into the inner cavity of a workpiece to be machined; the positioning operation of the tool bit is simple, the tool bit is firmly positioned, the stability of the tool bit is improved, and the anti-seismic performance of the tool bit structure is improved; the tool apron is arranged in a detachable structure, so that the corresponding tool bit can be replaced in time when the tool bit is worn or the inner diameter of a machined part is changed, and the application range is wider; the tip of tool bit is located cylinder central axis under, has further increased the anti-seismic performance of tool bit, and the life of tool bit also improves correspondingly.

Description

Tool bit structure for machine tool

Technical Field

The utility model relates to a lathe preparation technical field especially indicates a tool bit structure for lathe.

Background

The prior Chinese utility model patent with application number CN200920316963.7 entitled "machine tool bit device" discloses a machine tool bit device, which comprises a cutter head and a cutter head driving motor, and is characterized in that the cutter head is provided with at least two high-speed main shafts and low-speed main shafts with different rotating speeds, and the high-speed main shafts and the low-speed main shafts are arranged on large and small shaft seats corresponding to the high-speed main shafts and the low-speed main shafts. The cutter driving motor is a direct-drive motor, and a rotor of the direct-drive motor and a cutter rotating shaft are integrated. The utility model discloses an install a plurality of main shafts on the cutter head dish of a lathe, adopt the different main shaft rotational speed of configuration, thick, finish machining conversion only need rotate the blade disc by blade disc driving motor and can change the main shaft, need not clamp the work piece again, has avoided machining error and clamping time that work piece secondary clamping arouses, like this, has not only improved machining efficiency, has also improved the machining precision. However, the device has poor vibration resistance of the tool bit, is easy to break down when used for processing the inner wall of the nut, and has short service life, so the structure of the device needs to be further improved.

Disclosure of Invention

The utility model aims to solve the technical problem that a tool bit can stretch into to the machined part inner chamber to above-mentioned prior art current situation and provide, and the antidetonation is effectual, long service life's a tool bit structure for lathe.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: this a tool bit structure for lathe, including the tool bit, its characterized in that: the tool bit is characterized by further comprising a cylinder body capable of extending into the inner cavity of a workpiece, a fixing groove is formed in the end face of the cylinder body, the tool bit can be detachably mounted in the fixing groove, the end portion of a blade of the tool bit extends out of the outer peripheral face of the cylinder body, and a fixing portion capable of being fixed with a machine tool is arranged at the other end of the cylinder body.

As a modification, the cylinder may preferably be a cylinder, a positioning recess is provided on an end surface of the cylinder on one side of the fixing groove, connection screws are provided at intervals on the positioning recess, and the cutter head disposed in the fixing groove is fixed to an end of the cylinder by the connection screws.

The improved structure of the cutter comprises a cutter head, wherein the cutter head comprises a cutter seat and a blade, the cutter seat is connected in a fixing groove, a cutter seat groove capable of installing the blade is formed in the front portion of the cutter seat, a positioning piece is stacked on the top surface of the blade, a screw penetrates through the positioning piece and the blade to be connected with the bottom surface of the cutter seat groove, and the positioning piece and the cutter seat groove clamp and fix the blade.

In a further development, the insert can preferably be triangular, the seat recess being adapted to the insert contour, the chip tip of the insert being located outside the seat recess when the insert is mounted in the seat recess.

Further improved, the bottom corner of the tool apron groove can be preferably provided with an arc-shaped groove which is convenient for taking out the blade.

As a modification, a sidewall groove for facilitating the removal of the tool holder may be preferably provided on a sidewall of the fixing groove.

As a modification, a notch portion capable of preventing the cutter head from contacting the cylinder may be preferably provided on the end surface of the cylinder on the side of the fixing groove.

As an improvement, the tool apron comprises a tool apron body and a tool apron head, the thickness of the tool apron head is greater than that of the tool apron body, the tool apron body is connected with a connecting screw, the top surface of the tool apron body is parallel and level to the end surface of the column body, and the tool apron groove is located on the tool apron head.

The improved tool apron body is a rectangular block, the tool apron groove is a rectangular groove, the rectangular groove is eccentrically arranged relative to the center of the column body, and the tip of the tool bit is located under the central axis of the column body.

As an improvement, the fixing part is preferably a fixing block made of cast iron, the bottom surface of the fixing block is a plane capable of being attached to the machine tool fixing surface, a block concave part is arranged on the side wall of the fixing block, and a fixing screw capable of being connected with the machine tool fixing surface is arranged in the block concave part.

Compared with the prior art, the utility model has the advantages of: the tool bit is connected to the cylinder body, and the cylinder body can extend into the inner cavity of the workpiece, so that the tool bit can directly extend into the inner cavity of the workpiece for processing; by adopting the structure, the tool setting steps are reduced, the positioning operation of the tool bit is simpler, the tool bit is more firm after being positioned, the situation that the tool tip shakes or the tool feeding amount is too large in the machining process can be effectively reduced, the stability of the tool bit is improved, and the anti-seismic performance of the tool bit structure is improved; the tool apron is arranged in a detachable structure, so that the corresponding tool bit can be replaced in time when the tool bit is worn or the inner diameter of a machined part is changed, and the application range is wider; the tip of tool bit is located cylinder central axis under, has further increased the anti-seismic performance of tool bit, and the life of tool bit also improves correspondingly.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is an exploded view of the structure of FIG. 1;

FIG. 3 is a further exploded view of the exploded portion of FIG. 2;

FIG. 4 is a front perspective view of FIG. 1;

fig. 5 is an enlarged view of a portion I in fig. 4.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 5, the tool bit structure for a machine tool according to the present embodiment includes a tool bit, a cylinder 3 capable of extending into an inner cavity of a workpiece, a fixing groove 31 provided on an end surface of the cylinder 3, the tool bit detachably mounted in the fixing groove 31, an end portion of a blade 2 of the tool bit extending out of an outer peripheral surface of the cylinder 3, and a fixing portion 32 provided at the other end of the cylinder 3 and capable of being fixed to the machine tool. The cylinder 3 is a cylinder, a positioning concave part 33 is arranged on the end surface of the cylinder on one side of the fixing groove 31, a connecting screw is arranged on the positioning concave part 33 at intervals, and a cutter head arranged in the fixing groove 31 is fixed with the end part of the cylinder through the connecting screw. The cutter head comprises a cutter holder 1 and a blade 2, the cutter holder 1 is connected in a fixing groove 31, a cutter holder groove 11 capable of installing the blade 2 is formed in the front portion of the cutter holder 1, a positioning piece 4 is stacked on the top surface of the blade 2, a screw penetrates through the positioning piece 4 and the blade 2 to be connected with the bottom surface of the cutter holder groove 11, and the positioning piece 4 and the cutter holder groove 11 clamp and fix the blade 2. The insert 2 is triangular in shape, the seat recess 11 is adapted to the contour of the insert 2, and when the insert 2 is mounted in the seat recess 11, the cutting tip of the insert 2 is located outside the seat recess 11. A circular arc groove 111 for facilitating the removal of the insert 2 is provided at the bottom corner of the holder groove 11. A side wall groove 34 for facilitating the removal of the holder 1 is formed on the side wall of the fixing groove 31. A notch 35 is provided on the end surface of the column on the side of the holding groove 31 to prevent the blade from contacting the column 3.

The tool apron 1 comprises a tool apron body and a tool apron head, the thickness of the tool apron head is larger than that of the tool apron body, the tool apron body is connected with a connecting screw, the top surface of the tool apron body is parallel and level to the end surface of the column body 3, and the tool apron groove 11 is located on the tool apron head. The tool apron body is a rectangular block, the tool apron groove 11 is a rectangular groove, the rectangular groove is eccentrically arranged relative to the circle center of the cylinder 3, and the tip of the tool bit is positioned under the central axis of the cylinder. The fixing portion 32 is a fixing block made of cast iron, the bottom surface of the fixing block is a plane capable of being attached to a machine tool fixing surface, a block concave portion 321 is arranged on the side wall of the fixing block, and a fixing screw 322 capable of being connected with the machine tool fixing surface is arranged in the block concave portion 321.

The working principle is as follows: the cylinder can stretch into the inner cavity of the workpiece, so that the tool bit can directly machine the inner wall of the workpiece.

Claims

1. A cutter head structure for a machine tool, comprising a cutter head, characterized in that: the tool bit is characterized by further comprising a cylinder (3) capable of extending into the inner cavity of a machined part, a fixing groove (31) is formed in the end face of the cylinder (3), the tool bit can be detachably installed in the fixing groove (31), the end portion of a blade (2) of the tool bit extends out of the outer peripheral face of the cylinder (3), and a fixing portion (32) capable of being fixed with a machine tool is arranged at the other end of the cylinder (3).

2. The cutter head structure of claim 1 wherein: the cylinder (3) is a cylinder, a positioning concave part (33) is arranged on the end face of the cylinder on one side of the fixing groove (31), connecting screws are arranged on the positioning concave part (33) at intervals, and a cutter head arranged in the fixing groove (31) is fixed with the end part of the cylinder through the connecting screws.

3. The cutter head structure of claim 2 wherein: the tool bit includes blade holder (1) and blade (2), blade holder (1) is connected in fixed slot (31), is provided with blade holder recess (11) that can install blade (2) in the front portion of blade holder (1) the stack has locating piece (4) on the top surface of blade (2), and a screw passes locating piece (4) and blade (2) and is connected with the bottom surface of blade holder recess (11), locating piece (4) are pressed from both sides the clamp with blade holder recess (11) and are fixed.

4. The cutter head structure of claim 3 wherein: the blade (2) is triangular, the tool apron groove (11) is matched with the shape of the blade (2), and when the blade (2) is installed in the tool apron groove (11), the cutting tip of the blade (2) is positioned outside the tool apron groove (11).

5. The cutter head structure of claim 4 wherein: the bottom angle of the tool apron groove (11) is provided with an arc-shaped groove (111) which is convenient for taking out the blade (2).

6. The bit structure of any one of claims 1 to 5, wherein: and a side wall groove (34) which is convenient for taking out the tool apron (1) is arranged on the side wall of the fixing groove (31).

7. The bit structure of any one of claims 1 to 5, wherein: a notch part (35) which can avoid the contact between the tool bit and the cylinder (3) is arranged on the end surface of the cylinder at one side of the fixing groove (31).

8. The bit structure of any one of claims 3 to 5, wherein: the tool apron (1) comprises a tool apron body and a tool apron head, the thickness of the tool apron head is larger than that of the tool apron body, the tool apron body is connected with a connecting screw, the top surface of the tool apron body is parallel and level to the end surface of the cylinder (3), and the tool apron groove (11) is located on the tool apron head.

9. The cutter head structure of claim 8 wherein: the tool apron body is a rectangular block, the tool apron groove (11) is a rectangular groove, the rectangular groove is eccentrically arranged relative to the circle center of the cylinder (3), and the tip of the tool bit is positioned under the central axis of the cylinder.

10. The bit structure of any one of claims 1 to 5, wherein: the fixing part (32) is a fixing block made of cast iron, the bottom surface of the fixing block is a plane which can be attached to the fixing surface of a machine tool, a block concave part (321) is arranged on the side wall of the fixing block, and a fixing screw (322) which can be connected with the fixing surface of the machine tool is arranged in the block concave part (321).